U.S. patent application number 16/800593 was filed with the patent office on 2020-06-18 for display device.
The applicant listed for this patent is Universal Entertainment Corporation. Invention is credited to Hiroyuki ISHIDA, Shinji MAKISAKO, Koichi MORI, Hiroaki SUE, Yuuichirou SUZUKI.
Application Number | 20200192200 16/800593 |
Document ID | / |
Family ID | 59019953 |
Filed Date | 2020-06-18 |
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United States Patent
Application |
20200192200 |
Kind Code |
A1 |
SUE; Hiroaki ; et
al. |
June 18, 2020 |
DISPLAY DEVICE
Abstract
There is provided a display device capable of extending the
range of its application by enhancing the designability and the
diversity of the display manner and by improving visual effects.
The display device includes: a projector configured to project
light to display information in the form of a projection image; a
screen having a display surface through which light projected by
the projector passes to form a projection image thereon; and a
controller configured to control the projector. The display surface
has a non-planar shape.
Inventors: |
SUE; Hiroaki; (Tokyo,
JP) ; MORI; Koichi; (Tokyo, JP) ; SUZUKI;
Yuuichirou; (Tokyo, JP) ; MAKISAKO; Shinji;
(Tokyo, JP) ; ISHIDA; Hiroyuki; (Tokyo,
JP) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Universal Entertainment Corporation |
Tokyo |
|
JP |
|
|
Family ID: |
59019953 |
Appl. No.: |
16/800593 |
Filed: |
February 25, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
15374350 |
Dec 9, 2016 |
10613422 |
|
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16800593 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G03B 21/62 20130101;
G03B 21/10 20130101; G03B 21/13 20130101; G02B 6/0051 20130101;
G03B 21/606 20130101; G07F 17/3211 20130101; G07F 17/3218 20130101;
H04N 9/3141 20130101 |
International
Class: |
G03B 21/10 20060101
G03B021/10; F21V 8/00 20060101 F21V008/00; G07F 17/32 20060101
G07F017/32; H04N 9/31 20060101 H04N009/31; G03B 21/13 20060101
G03B021/13; G03B 21/62 20060101 G03B021/62; G03B 21/606 20060101
G03B021/606 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 11, 2015 |
JP |
2015-241978 |
Jul 14, 2016 |
JP |
2016-139196 |
Jul 14, 2016 |
JP |
2016-139237 |
Claims
1. A display system for a gaming machine, comprising: an electronic
display device provided on a front surface of the gaming machine to
display game information; a projection screen having a curved
surface extending from a lower end region thereof to an upper end
region thereof, the curved surface corresponding to the upper end
region extending such that it is positioned more forward as
compared to the curved surface corresponding to the lower end
region, a portion of the curved surface extending above the
electronic display device; and a projector positioned rearward of
the projection screen, the projector configured to project light
via a reflector such that an image is displayed on the projection
screen.
2. The display system of claim 1 wherein the curved surface
extending from the lower end region to the upper end region forms a
convex-shaped arc.
3. The display system of claim 1 wherein a portion of the curved
surface extends along at least one lateral side of the electronic
display device.
4. The display system of claim 1 wherein a portion of the curved
surface extends below the electronic display device.
5. The display system of claim 1 comprising a plurality of gaming
machines, and wherein the projection screen is common to the
plurality of gaming machines.
6. The display system of claim 5, wherein the projection screen
common to the plurality of gaming machines is formed from a
plurality of projection surface members.
7. A gaming machine comprising: a projector that projects light so
as to project an image; a first screen upon which light projected
from the projector is incident so as to form a projected image
thereon; and a second screen overlapping a portion of the first
screen such that the portion of the first screen overlapped by the
second screen is hidden from view from a perspective of a forward
observer, the second screen configured to display an image
different from the projected image on the first screen.
8. The gaming machine of claim 7, further comprising an electronic
display device disposed proximate the first and second screens.
9. The gaming machine of claim 8, wherein a portion of the first
screen is disposed above the electronic display device.
10. The gaming machine of claim 8, wherein a portion of the first
screen is disposed below the electronic display device.
11. The gaming machine of claim 8, wherein a portion of the first
screen is disposed on at least one lateral side of the electronic
display device.
12. The gaming machine of claim 8, wherein a portion of the second
screen is disposed on at least one lateral side of the electronic
display device.
13. The gaming machine of claim 8, wherein the first screen has a
curved surface extending from a lower end region thereof to an
upper end region thereof, the curved surface corresponding to the
upper end region extending such that it is positioned more forward
on the gaming machine as compared to the curved surface
corresponding to the lower end region.
14. The gaming machine of claim 8, wherein the second screen has a
curved surface extending from a lower end region thereof to an
upper end region thereof, the curved surface corresponding to the
upper end region extending such that it is positioned more forward
on the gaming machine as compared to the curved surface
corresponding to the lower end region.
15. The gaming machine of claim 13, wherein the curved surface of
the first screen forms a convex-shaped arc.
16. The gaming machine of claim 14, wherein the curved surface of
the second screen forms a convex-shaped arc complementary to that
portion of the first screen that is overlapped.
17. The display system of claim 1, wherein the electronic display
device is a LED-type or LCD-type electronic display.
18. The gaming machine of claim 8, wherein the electronic display
device is a LED-type or LCD-type electronic display.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application is a continuation application of U.S.
patent application Ser. No. 15/374,350, filed Dec. 9, 2016, which
application claims priority from Japanese Patent Applications No.
2015-241978 filed on Dec. 11, 2015, No. 2016-139196 filed on Jul.
14, 2016, and No. 2016-139237 filed on Jul. 14, 2016, the
disclosures of which are incorporated by reference in their
entireties.
FIELD OF THE INVENTION
[0002] The present invention relates to a display device.
BACKGROUND OF THE INVENTION
[0003] There have been known display devices configured to display
information. For example, there is disclosed a topper display
device of a gaming machine, by U.S. Unexamined Patent Publication
No. 2016/0005261, for example. The topper display device is
configured to display contents related to a game on its front.
BRIEF SUMMARY OF THE INVENTION
Technical Problem
[0004] In recent years, there is a display device which
incorporates a projector therein and is configured to project
images onto a screen on a front side. The use of the projector is
advantageous in that the size of the display screen can be enlarged
at low cost. However, because the projector is disposed inside the
display device, the depth of the device has to be increased.
Because of this disadvantage, there has been sought to add further
value in the use of the projector in the display device, by
improving other factors such as the designability and the diversity
of the display manner.
[0005] The present invention has been made to solve the above
problem. An object of the invention is to provide a display device
capable of extending the range of its application by enhancing the
designability and the diversity of the display manner and by
improving visual effects provided by the device.
Technical Solution
[0006] According to an embodiment of the present invention, a
display device includes: a projector configured to project light to
display information in a form of a projection image; a screen
having a display surface through which light projected by the
projector passes to form a projection image thereon; and a
controller configured to control the projector, wherein the display
surface has a non-planar shape.
[0007] In the above arrangement, the display surface of the screen,
to which light to display information in the form of a projection
image is projected by the projector, has a non-planar shape.
[0008] This enables the device to display a stereoscopic image with
depth, to further enhance visual effects and decorative
effects.
[0009] In the display device of the present invention, the display
surface of the screen may have a curved shape with inclination.
[0010] In the above arrangement, when the entire display surface
has a convex shape, display thereon is visually perceptible from a
wider range of area than that on the flat display surface.
Meanwhile, when the entire display surface has a concave shape,
display thereon is visually perceptible from a narrower range of
area than that on the flat display surface. Thus, the above
arrangement extends the range of application of the display
device.
[0011] In the display device of the present invention, the display
surface of the screen may be formed by a plurality of projection
surface members partially overlapping each other.
[0012] In the above arrangement, the stereoscopic screen suited for
projection images is structured. Thus, it is possible to further
extend the range of application of the display device.
[0013] In the display device of the present invention, the screen
may be arranged to be replaceable.
[0014] In the above arrangement, by replacing the screen, it is
possible to change the visual impressions given by projection
images on the display surface. Therefore, the display manner is
freely changeable merely by replacing the screen in accordance with
the layout of the place in which the display device is provided or
the design of an external device to which the display device is
connected. This enhances the designability and the diversity of the
display manner.
[0015] According to an embodiment of the present invention, a
display device includes: a screen unit including a casing, a
projector provided in the casing and configured to project light to
display information in a form of a projection image, and a screen
forming a wall surface of the casing and having a display surface
through which light projected by the projector passes to form a
projection image thereon; a light emission unit provided in the
casing, the light emission unit including a light source and an
illuminated portion illuminated by the light source; and a
controller configured to control the projector and the light
emission unit, wherein the display surface has a non-planar
shape.
[0016] In the above arrangement, the display surface of the screen,
onto which light to display information in the form of a projection
image is projected by the projector, has a non-planar shape, and
the light emission unit is mounted in addition to the projector.
This makes it possible to give notification or the like through
light emission, around the screen unit. There has been a structural
problem in projectors: brightness is lower in the peripheral
portion of the screen than the central portion of the screen.
However, in the above arrangement, the display device is configured
to display a stereoscopic image with depth by the use of the
non-planar screen. Further, the light emission unit is provided
around the casing provided with the screen. These arrangements
capture attention of people looking at the display device. This
makes the above-mentioned problem less noticeable.
[0017] In the display device of the present invention, the light
emission unit may be provided so that at least one of edges of the
screen is fringed with the light emission unit.
[0018] In the above arrangement, the light emission unit is
provided so that at least one of the edges of the screen is fringed
with the light emission unit. Light is emitted from the light
emission unit, in addition to projection images projected by the
projector. This further enhances the visual effects and the
decorative effects of the display manner.
[0019] In the display device of the present invention, the casing
may be provided with a light-shielding member provided at an edge
portion of the screen and configured to shield the display surface
from light traveling from the light emission unit to the display
surface.
[0020] In the above arrangement, the light-shielding member is
provided to shield the display surface from light emitted from the
light source. When the screen unit and the light emission unit are
unitarily formed, for example, this arrangement increases the
efficiency of application of light by the projector to project a
projection image on the screen, and reduces effects on the
brightness and resolution of the projection image projected on the
display surface of the screen.
[0021] In the display device of the present invention, the light
emission unit may include: a light-transmitting light guiding plate
provided on an opposite side of the casing from the display surface
so as to be attachable to and detachable from the casing, and
having an opening of a predetermined shape penetrating the plate in
its thickness direction; and a plurality of light sources provided
so as to be opposed to an opening-side end surface forming the
opening of the light guiding plate, and the display device may be
arranged such that the light sources are arranged to be aligned
along the opening-side end surface, and light from the light
sources is guided into the light guiding plate through the
opening-side end surface, to illuminate an outer end surface of the
light guiding plate.
[0022] In the above arrangement, light emitted from the light
sources arranged in the opening of the light guiding plate enters
through the opening-side end surface of the light guiding plate,
and then the light is guided in the light guiding plate, to
illuminate the whole area of the outer end surface of the light
guiding plate. Thus, light emitted from the light sources is
radially dispersed in the light guiding plate and reaches the outer
end surface of the plate. This makes it possible to illuminate the
whole circumference of the light guiding plate annularly. As a
result, the thus illuminated light guiding plate is visible from
all the directions relative to the display device, which further
enhances the visual effects and decorative effects of the display
device.
[0023] In the display device of the present invention, the light
guiding plate may include a reflecting portion processed to
reflect, in the thickness direction of the light guiding plate, a
part of light emitted from the light sources and guided in the
light guiding plate.
[0024] In the above arrangement, a part of light guided in the
light guiding plate exits through a surface of the light guiding
plate, reflected by the reflecting portion of the light guiding
plate, which portion has been processed to reflect light. Light
exiting from the surface of the light guiding plate improves the
designability, to further enhance the visual effects and decorative
effects of the display device.
[0025] According to an embodiment of the present invention, a
display device includes: a screen unit including a casing, a
projector provided in the casing and configured to project light to
display information in a form of a projection image, and a screen
forming a wall surface of the casing and having a display surface
through which light projected by the projector passes to form a
projection image thereon; a light emission unit provided in the
casing, the light emission unit including a light source and an
illuminated portion illuminated by the light source; an input
device configured to receive operation from an outside; and a
controller connected to an external device and configured to
control the projector and the light emission unit based on a signal
from the external device, and to control the light emission unit
based on a signal from the input device, wherein the display
surface has a non-planar shape.
[0026] In the above arrangement, the display surface of the screen,
onto which light to display information in the form of a projection
image is projected by the projector, has a non-planar shape, and
the light emission unit is mounted in addition to the projector.
This makes it possible to give notification or the like through
light emission, around the screen unit. Projection images on the
display surface are controlled based on a signal from the external
device. The light emission mode of the light emission unit is
controlled based on a signal from the external device and a signal
from the input device which receives operation from the outside.
There has been a structural problem in projectors: brightness is
lower in the peripheral portion of the screen than the central
portion of the screen. However, in the above arrangement, the
display device is configured to display a stereoscopic image with
depth by the use of the non-planar screen. Further, the light
emission unit is provided around the casing provided with the
screen. These arrangements capture attention of people looking at
the display device. This makes the above-mentioned problem less
noticeable. Further, the light emission mode of the light emission
unit is changeable by operation from the outside. Thus, it is
possible to extend the range of application of the display
device.
[0027] In the display device of the present invention, the
controller may control the light emission unit to emit light in a
specific light emission mode when receiving a signal from the input
device.
[0028] In the above arrangement, when the input device is operated
from the outside, the light emission unit emits light in the
specific light emission mode. This makes all the people who can see
the light emission unit know the fact that the input device has
been operated.
[0029] In the display device of the present invention, the input
device may be a touch sensor.
[0030] In the above arrangement, the touch sensor formed as a
planar surface is used instead of a button having a movable
portion. This prevents failures caused by dirt or the like entering
a space around the movable portion, and failures caused by fatigue
in the movable portion.
[0031] In the display device of the present invention, the external
device may be a gaming machine, and the display device may be
arranged such that the controller is configured to: receive a video
signal and a light emission pattern signal corresponding to a game
status from the gaming machine; control the projector to project
light to display video indicated by the video signal in the form of
a projection image; and control the light emission unit to emit
light in a light emission mode indicated by the light emission
pattern signal.
[0032] In the above arrangement, the display device can be used as
a display area for a game in the gaming machine. In addition, the
light emission unit can be used for effects in the game. Further,
because it is possible to control the light emission unit through
the input device, the display device is able to function as a
notification device to call casino staff or the like.
BRIEF DESCRIPTION OF THE DRAWINGS
[0033] FIG. 1 is an overall perspective view of a display device of
First Embodiment.
[0034] FIG. 2 is an exploded perspective view of the display device
of First Embodiment.
[0035] FIG. 3 is a perspective view of a screen unit of the display
device of First Embodiment, viewed from the back.
[0036] FIG. 4A is a perspective view of an exemplary replaceable
screen unit of the display device of First Embodiment.
[0037] FIG. 4B is a perspective view of an exemplary replaceable
screen unit of the display device of First Embodiment.
[0038] FIG. 4C is a perspective view of an exemplary replaceable
screen unit of the display device of First Embodiment.
[0039] FIG. 5A is a perspective view of an exemplary display area
of the screen unit.
[0040] FIG. 5B is a perspective view of an exemplary display area
of the screen unit.
[0041] FIG. 5C is a perspective view of an exemplary display area
of the screen unit.
[0042] FIG. 6 is a schematic diagram illustrating an example of
contents displayed on the display device of First Embodiment.
[0043] FIG. 7 is an explanatory diagram for explaining how an image
is displayed by the display device of First Embodiment.
[0044] FIG. 8 is an explanatory diagram for explaining the
difference in display manners of the display device of First
Embodiment.
[0045] FIG. 9 is an explanatory diagram for explaining a first
display example displayed on the display device of First
Embodiment.
[0046] FIG. 10 is an explanatory diagram for explaining a second
display example displayed on the display device of First
Embodiment.
[0047] FIG. 11 is an explanatory diagram for explaining a third
display example displayed on the display device of First
Embodiment.
[0048] FIG. 12 is a perspective view of the screen unit of the
display device of Second Embodiment, viewed from the back.
[0049] FIG. 13 is an exploded perspective view of the display
device of Third Embodiment.
[0050] FIG. 14 is an explanatory diagram illustrating the operation
of a movable decoration sheet of the display device of Third
Embodiment.
[0051] FIG. 15A is an explanatory diagram for explaining the
difference in brightness caused by a change in the positional
relationship between the movable decoration sheet and a fixed
decoration sheet of the display device of Third Embodiment.
[0052] FIG. 15B is an explanatory diagram for explaining the
difference in brightness caused by a change in the positional
relationship between the movable decoration sheet and the fixed
decoration sheet of the display device of Third Embodiment.
[0053] FIG. 16 is an exploded perspective view of the display
device of Fourth Embodiment.
[0054] FIG. 17 is an overall perspective view of the display device
of Fifth Embodiment.
[0055] FIG. 18 is a cross section of the display device of Fifth
Embodiment.
[0056] FIG. 19 is an overall perspective view of the display device
of Modification 1 of Fifth Embodiment.
[0057] FIG. 20 is an overall perspective view of the display device
of Modification 2 of Fifth Embodiment.
[0058] FIG. 21A is a cross section of the display device of Sixth
Embodiment.
[0059] FIG. 21B is an enlarge cross section of a main part of the
display device.
[0060] FIG. 22 is a cross section of the display device of
Modification 1 of Sixth Embodiment.
[0061] FIG. 23 is a cross section of the display device of
Modification 2 of Sixth Embodiment.
[0062] FIG. 24 is a cross section of the display device of Seventh
Embodiment.
[0063] FIG. 25 is a cross section of the display device of
Modification 1 of Seventh Embodiment.
[0064] FIG. 26 is a cross section of the display device of
Modification 2 of Seventh Embodiment.
[0065] FIG. 27 is a perspective view of the display device of
Eighth Embodiment.
[0066] FIG. 28 is an exploded perspective view of the display
device of Eighth Embodiment.
[0067] FIG. 29 is an exploded perspective view of the display
device of Eighth Embodiment, viewed from the back.
[0068] FIG. 30 is an exploded perspective view of the display
device of Eighth Embodiment, viewed from the back.
[0069] FIG. 31A is an explanatory diagram illustrating an example
of a pattern of path of light emitted from an LED and traveling
through a light guiding plate in the device of Eighth
Embodiment.
[0070] FIG. 31B is an explanatory diagram illustrating an example
of a pattern of path of light emitted from an LED and traveling
through the light guiding plate in Eighth Embodiment.
[0071] FIG. 32 is an explanatory diagram illustrating an example of
the illumination manner of the light guiding plate in Eighth
Embodiment.
[0072] FIG. 33 is an exploded perspective view of the display
device of Eighth Embodiment, viewed from the back.
[0073] FIG. 34 is a perspective view of a projector accommodating
body included in the display device of Ninth Embodiment.
[0074] FIG. 35 is an exploded perspective view of the projector
accommodating body included in the display device of Ninth
Embodiment.
[0075] FIG. 36 is a block diagram showing the electrical structure
of the projector accommodating body in Ninth Embodiment.
[0076] FIG. 37 is a flowchart of a control process executed by a
control circuit in Ninth Embodiment.
[0077] FIG. 38 is an explanatory functional block diagram related
to Tenth Embodiment.
[0078] FIG. 39 shows the external appearance of a gaming machine in
which the display device is applied.
DETAILED DESCRIPTION OF EMBODIMENTS
[0079] The following will describe embodiments of the present
invention with reference to the drawings.
First Embodiment
[0080] First of all, a description will be given for the basic
outline of a display device of First Embodiment of the present
invention.
[0081] The display device of the present embodiment is configured
to display various types of information in the form of a projection
image, using a transmission-type projector device. That is, the
display device includes: a projector configured to project light to
display information in the form of a projection image; a screen
having a display surface through which light projected by the
projector passes to form a projection image thereon; and a
controller configured to control the projector. The display surface
of the screen has a non-planar shape (for example, see FIG. 17).
This enables the device to display a stereoscopic image with depth,
to further enhance visual effects and decorative effects.
[0082] The following description of the embodiments mainly deals
with the case where a single display device is connected to a
single gaming machine. However, the present invention is not
limited to this. For example, the display device may be used as a
common display device connected to a plurality of gaming machines.
Further, the number of projectors mounted in a display device is
not limited to one. A plurality of projectors may be mounted in a
single display device. The display device does not have to be
connected to the gaming machine. The display device may be
configured to operate independently. The display device may be
connected to Internet, to be operable based on information from a
server or the like. To be more specific, the display device may be
a device which operates solely to display advertisement or the
like, or may be a unit for decorating a gaming machine, which unit
operates independently from the gaming machine.
[0083] The shape of the screen is not particularly limited as long
as its display surface has a non-planar shape. Such a non-planar
surface is not limited to a curved surface gently inclined
throughout its whole range, for example, as shown in FIG. 17. For
example, a part of the display surface may project, or a recess may
be provided at a part of the display surface. As shown in FIG. 19
and FIG. 20, for example, such a non-linear display surface may be
formed by a plurality of members.
[0084] In the following embodiments, the controller of the display
device determines information to be displayed in the form of a
projection image (hereinafter referred to as "projection image
information"), based on a control signal transmitted from the
gaming machine connected to the display device. However, the
present invention is not limited to this. For example, the
controller may determine the projection image information as
follows. The controller may store predetermined patterns, and may
display plural types of information based on the stored patterns.
Alternatively, the controller may determine the projection image
information based on a control signal transmitted from the outside
of the display device. Such a control signal from the outside may
be received via the Internet, for example, or may be received from
an external device connected to the display device. Alternatively,
such a control signal may be received from an input device provided
to the display device.
[0085] Such a control signal may be the projection image
information. Alternatively, such a control signal may be
identification information to identify the projection image
information. In this case, the projection image information is
stored in the controller. As such, the controller may store: the
projection image information; information regarding the relation
between the projection image information and the identification
information; display patterns for the projection image information;
and/or the like.
[0086] [Structure of Display Device]
[0087] The structure of the display device will be described with
reference to FIG. 1 to FIG. 6. Some of the embodiments including
the present embodiment are described using a display device, the
display surface of the screen of which does not have a non-planar
shape. However, a screen having a non-planar display surface is
applicable to the display device of these embodiments. The screen
having a non-planar display surface will be described later.
[0088] As shown in FIG. 2, the display device 1 of the present
embodiment includes: a casing 10; a screen unit 11A; a projector
main body (projector unit) 12; a reflector 13; and an operation
unit 14, as basic components. The casing 10 accommodates therein an
unillustrated control unit, in addition to the projector main body
12, the reflector 13, and the operation unit 14. The control unit
is configured to control the operation of the overall display
device 1. The screen unit 11A is attached to cover an opening 10A
provided on the front side of the casing 10. In First Embodiment,
there are three replaceable screen units 11A to 11C, by way of
example, as shown in FIG. 4A and FIG. 4C. FIG. 1 to FIG. 3 each
shows the screen unit 11A of a standard type. Unless otherwise
noted, the description will be given basically using the screen
unit 11A. However, any of these screen units may be used.
[0089] As shown in FIG. 2, the casing 10 has a box-like shape. The
casing 10 has: a bottom surface 10a; left and right side surfaces
10b and 10c; rear surface 10d; an upper surface 10e; and the
front-side opening 10A. The projector main body 12 is disposed on a
rear portion of the bottom surface 10a. The operation unit 14 is
disposed on a front portion of the bottom surface 10a. The
reflector 13 is attached to an upper portion of the rear surface
10d.
[0090] The screen unit 11A has: a front surface portion 11a
configured to cover the opening 10A of the casing 10; and left and
right side portions 11b and 11c. The side portions 11b and 11c are
detachably secured to the side surfaces 10b and 10c of the casing
10, respectively. The screen unit 11A includes: a screen
(projection surface member) 110A provided at an opening 11aa of the
front surface portion 11a; and LED substrates 111. The LED
substrates 111 are provided at both left and right portions of the
back surface of the front surface portion 11a, as shown in FIG.
3.
[0091] The front surface portion 11a has: light exit surfaces 111a;
and an aperture 112, in addition to the opening 11aa in which the
screen 110A is disposed. The light exit surfaces 111a are provided
to the left and right of the screen 110A, and light is applied
through the light exit surfaces 111a. Through the aperture 112,
buttons 14A to 14F of the operation unit 14 are exposed to face the
front.
[0092] The screen 110A is a light-transmission type rear-projection
screen, i.e., light is projected from behind the screen. The screen
110A is mainly made of a light-transmitting glass plate, acrylic
plate, or resin film, for example. The color of the screen 110A is
normally (when no image is projected thereon) milky white,
translucent, or gray. The screen 110A of the screen unit 11A has a
uniform thickness throughout the screen 110A. The screen 110A has:
a uniformly flat incident surface 1100 (FIG. 3) on the back side
thereof; and a display surface 1101 (FIG. 2) on the front side
thereof. To the incident surface 1100, light projected from the
projector main body 12 enters. On the display surface 1101, a
projection image is formed by light having entered the incident
surface 1100 and having been transmitted through the screen 110A.
The screens 110B and 110C of the remaining screen units 11B and 11C
each has the incident surface 1100 similar to that of the screen
110A of the screen unit 11. Meanwhile, the display surface 1101 of
each of the screens 110B and 110C is different from that of the
screen 110A. This will be detailed later.
[0093] As shown in FIG. 2 and FIG. 3, each light exit surface 111a
is a surface of a light-transmitting plate member. The LED
substrates 111 are respectively provided on the back of the plate
members. Although not illustrated, a plurality of LEDs are mounted
on each LED substrate 111. Each LED substrate 111 is connected to
the control unit in the casing 10 through a connector 111 and a
cable 111B. In FIG. 3, the connector 111A and the cable 111B for
one of the LED substrates 111 are illustrated. It should be noted
that the connector and the cable are provided for the other of the
LED substrates 111, and the other of the LED substrates 111 is also
connected to the control unit through the connector and the
cable.
[0094] The control unit controls the LEDs on the LED substrates 111
so as to be turned on or blink. Light emitted from the LEDs is
applied frontward through the light exit surfaces 111a. No light
emitting portion is provided to the screen units 11B and 11C. The
reason for this will be described later.
[0095] Each light exit surface 111a is a surface of the
light-transmitting plate member in this embodiment. However, the
present invention is not limited to this. The light exit surface
may be made of a material that at least partially has a
light-transmitting portion. That is, the light exit surface may
partially include a portion through which light is not
transmittable.
[0096] In such a light-transmitting portion, a decorative sheet may
be provided between each LED substrate and the corresponding plate
member. Further, light-transmitting colored decoration may be
provided to the light-transmitting portion of the plate members. In
this case, while each LED substrate functions as a light emitting
unit having a light source, each plate member functions as a
decoration member decorated by the light emitting unit. As the
decoration member, there is used a member having optical
characteristics, such as light transmittance, diffusion,
polarization, refraction, and reflection.
[0097] The projector main body 12 is configured to project light to
display various types of information on the screen in the form of a
projection image. The projector main body 12 may be, for example,
of an LCD (liquid-crystal display) type using a liquid-crystal
display, or of a DLP (Registered Trademark: Digital Light
Processing) using a DMD (Digital Micromirror Device). Examples of
various types of information displayed on the screen include
advertisement, information on the external device connected to the
display device, and the like. When a gaming machine is connected to
the display device, for example, contents of a game executed on the
gaming machine are displayed, for example.
[0098] The projector main body (projector unit) 12 is connected to
the unillustrated control unit. The control unit controls the
operation of the projector main body 12. The projector main body 12
includes: a liquid-crystal panel or a DMD; and an LED or a lamp
functioning as a light source; a dichroic mirror; a projector lens;
and the like. The position of the projector lens is adjustable with
respect to the optical axis.
[0099] The projector main body 12 is provided so that light exiting
from the projector lens directly goes to the reflector 13. When the
screen unit (11A to 11C) is attached, focus can be adjusted by
slightly adjusting the position of the projector lens of the
projector main body 12 with respect to the optical axis. This
enables projection of sharp projection images in correct focus on
the screen (110A to 110C), whichever of the screen units 11A to 11C
is used.
[0100] The reflector 13 is made of a member which reflects light.
The reflector 13 is provided on the rear surface 10d to be inclined
relative to the opening 10A of the casing 10. The reflector 13
reflects light coming from the projector main body 12 toward the
opening 10A (toward the incident surface 1100 of the screen
110A).
[0101] The operation unit 14 has a plurality of buttons 14A to 14F
arranged laterally. The buttons 14A to 14F are operable by a user
of the display device (hereinafter, simply referred to as a
"user".) Specifically, as shown in FIG. 6, the operation unit 14
has the following buttons arranged from left to right: a switch
button 14A, a history button 14B, a call button 14C, a setting
button 14D, a confirm button 14E, and a four-way button 14F. The
operation unit 14 is connected to the unillustrated control unit.
When operation on any of the buttons 14A to 14F is detected by the
switch corresponding thereto, a detection signal is supplied from
the switch to the control unit. Then, the control unit performs
display control corresponding to the detection signal.
[0102] In the present embodiment, the display device is connected
to a gaming machine, and the switching button 14A is used to switch
the displayed contents, such as a graph and numerical values, which
will be described later. The history button 14B is used to display
today's game history. The call button 14C is used to call the staff
of a casino. The setting button 14D is used to change the display
setting and the like. The confirm button 14E is used to confirm
various settings. The four-way button 14F is used to change a
numerical value, and to scroll.
[0103] FIG. 4A to FIG. 4C respectively show the replaceable screen
units 11A to 11C. FIG. 5A to FIG. 5C respectively show display
areas on the screens of the screen units 11A to 11C. Note that same
or similar elements of the screen units 11A to 11C are given the
same reference numerals. Although not illustrated, the casing 10 is
commonly used for the screen units 11A to 11C.
[0104] The screen unit 11A shown in FIG. 4A is the same as the
screen unit shown in FIG. 1 to FIG. 3. In the screen unit 11A, the
entire front surface of the screen 110A is structured as a
uniformly flat display surface 1101. As shown in FIG. 5A, a
projection image V1 is projected on a central portion of the
display surface 1101, a projection image V2 is projected on a left
end portion of the display surface 1101, and a projection image V3
is projected on a right end portion of the display surface 1101.
The left and right herein are the left and right of a viewer who
sees the display surface 1101 in front thereof. As described above,
the incident surface 1100 of the screen 110A, which is on the back
side, is uniformly flat.
[0105] As exemplarily shown in FIG. 6, a chart image is displayed
as the projection image V1 on the screen 110A. The chart image is a
line-graph showing the credit amount having been obtained by the
user from the start of the game. A text image is displayed as the
projection image V2. The text image shows the number of plays of a
bonus game and the total number of game plays executed today.
[0106] Another text image is displayed as the projection image V3.
The text image shows historical data, such as the number of plays
of the bonus game and the total number of game plays executed in
the past. The surface which light enters is the incident surface
1100. The surface on which light is projected (display surface) is
not limited to the above display surface 1101. That is, the display
surface may include an area on the back surfaces of the LED
substrates 111, areas above and below the incident surface 1100
(e.g., the front surface portion 11a), and the left and right areas
(the side portions 11b and 11c).
[0107] Thus, the surface on which light is projected may be located
inside the screen unit, as long as the surface is located frontward
of the projector main body 12 or frontward of the reflector 13 and
onto which a projection image is able to be projected.
[0108] In the screen unit 11B shown in FIG. 4B, a central portion
of the front surface of the screen 110A is structured as the
uniformly flat display surface 1101. Hereinafter, the central
display surface of the screen 110B is referred to as a "first
display surface 1101". Second display surfaces 1101B are
respectively provided at left and right end portions of the screen
110B, on the front side of the screen 110B.
[0109] Each second surface 1101B is positioned frontward of the
first display surface 1101. That is, each second display surface
1101B is a surface of a panel having a thickness. The difference in
the position in the front-back direction made by the thickness
defines each second display surface 1101B as a rectangular area. No
light exit surface is provided on the screen unit 11B of the
present embodiment. Instead, the left and right second display
surfaces 1101B extend to the positions close to the left and right
ends of the screen unit 11B, respectively.
[0110] As shown in FIG. 5B, the projection image V1 is projected on
the first display surface 1101, the projection image V2 is
projected on the left second display surface 1101B, and the
projection image V3 is projected on the right second display
surface 1101B. The left and right herein are the left and right of
a viewer who sees the screen 110B in front thereof.
[0111] The contents of the projection images V1 to V3 are basically
similar to those shown in FIG. 6. However, the projection image V2
and V3 respectively displayed on the left and right second display
surfaces 1101B may contain a message image, in addition to the text
image. The message image will be described later.
[0112] Although not illustrated, an incident surface is formed on
the back side of the screen 110B, so as to correspond to the first
display surface 1101 and the second display surfaces 1101B. To the
incident surface, light projected from the projector main body 12
enters. The incident surface of the screen 110B is also uniformly
flat.
[0113] In the screen unit 11C shown in FIG. 4C, a central portion
of the front surface of the screen 110C is structured as the
uniformly flat display surface 1101. Hereinafter, the central
display surface of the screen 110C is referred to as a "first
display surface 1101". Second display surfaces 1101C are
respectively provided at left and right end portions of the screen
110C, on the front side of the screen 110C.
[0114] Each second surface 1101C is positioned frontward of the
first display surface 1101. That is, each second display surface
1101C is a surface of a panel having a thickness. The difference in
the position in the front-back direction made by the thickness
defines each second display surface 1101C as a trapezoidal area. A
longer side portion 1101Ca of each trapezoidal second display
surface 1101C is located closer to the left or right end portion of
the screen 110C. A shorter side portion 1101Cb of each trapezoidal
second display surface 1101C is located closer to the central
portion of the screen 110C.
[0115] In the present embodiment, as shown in FIG. 11, a thickness
W1 of each panel at the longer side portion 1101Ca is larger than a
thickness W2 of the panel at the shorter side portion 1101Cb. The
thickness of each panel gradually increases from its shorter side
portion 1101Cb to the longer side portion 1101Ca. No light exit
surface is provided to the screen unit 11C. The second display
surfaces 1101C at the left and right end portions are large
enough.
[0116] As shown in FIG. 5C, the projection image V1 is projected on
the first display surface 1101, the projection image V2 is
projected on the left second display surface 1101C, and the
projection image V3 is projected on the right second display
surface 1101C. The left and right herein are the left and right of
a viewer who sees the screen 110C in front thereof. The contents of
the projection images V1 to V3 are basically similar to those shown
in FIG. 6. Although not illustrated, an incident surface is formed
on the back side of the screen 110C, so as to correspond to the
first display surface 1101 and the second display surfaces 1101C.
To the incident surface, light projected from the projector main
body 12 enters. The incident surface of the screen 110C is also
uniformly flat.
[0117] [How Image is Displayed on Screen and Seen]
[0118] The following will describe how an image is displayed on the
screen (110A to 110C) and seen, with reference to FIG. 7 to FIG.
11.
[0119] First, a description is given for the screen 110A. As shown
in FIG. 7, a light beam a projected by the projector main body 12
is reflected by the reflector 13, and passes through the incident
surface 1100 of the screen 110A, to reach an upper end portion of
the display surface 1101. A light beam 13 projected by the
projector main body 12 is reflected by the reflector 13, and then
passes through the incident surface 1100 of the screen 110A, to
reach a lower end portion of the display surface 1101.
[0120] As a result, the projection images V1 to V3 showing various
types of game information are displayed between the upper end
portion and the lower end portion of the display surface 1101. FIG.
9 shows a part of the screen 110A showing the images, but the
projection image V3 is not shown in this figure. Through the light
exit surfaces 111a, lighting up and blinking of the LEDs can be
seen. The light exit surfaces 111a are respectively located
leftward and rightward of the left and right projection images V2
and V3. Turning on and blinking of the LEDs are performed in
accordance with the game status or the like. Note that the right
light exit surface 111a is not illustrated.
[0121] A description is now given for the screen 110C. As shown in
FIG. 8, a light beam a projected by the projector main body 12 is
reflected by the reflector 13, and then passes through the incident
surface 1100 of the screen 110C, to reach an upper end portion of
the first display surface 1101. A light beam 13 projected by the
projector main body 12 is reflected by the reflector 13, and then
passes through the incident surface 1100 of the screen 110C, to
reach a lower end portion of the first display surface 1101. Then,
as shown in FIG. 11, the projection image V1 is displayed on the
first display surface 1101 substantially similarly to the case
shown in FIG. 9.
[0122] Meanwhile, in the vicinity of the shorter side portion
1101Cb of each second display surface 1101 located frontward by the
predetermined thickness W2, the light beams .alpha. and .beta.
having entered the incident surface 1100 are refracted, and then
reach the positions on the second display surface, which positions
are lower than their positions on the incident surface by h1 and
h1', respectively. Further, in the vicinity of the longer side
portion 1101Ca of each second display surface 1101 located
frontward by the predetermined thickness W1 larger than the
thickness W2, the light beams .alpha. and .beta. are refracted, and
then reach the positions on the second display surface, which
positions are lower than their positions on the entrance surface by
h2 and h2', respectively.
[0123] Thus, as shown in FIG. 11, each second display surface 1101C
displays the projection image V2, V3 deformed into a parallelogram
shape, differently from the case shown in FIG. 9. Specifically, the
projection image is inclined downward toward its left or right
outer end. Note that the projection image V3 is not
illustrated.
[0124] As shown in FIG. 10, the screen 110B displays images on the
same principle. While the first display surface 1101 displays the
projection image V1 substantially similarly to the case shown in
FIG. 9, each second display surface 1101B displays the projection
image V2, V3 so that the projection image is inclined downward
toward its left or right outer end, as compared to the case shown
in FIG. 9. Note that the projection image V3 is not illustrated. On
the second display surfaces 1101B of the screen 110B, a message
image is displayed as a projection image V2a. It is possible to
replace the portions of the screen 110B where the projection image
V2a is displayed with the light exit surfaces 111a.
[0125] By replacing the screen unit 11A with the screen unit 11B,
the decoration part of the screen unit is changed from the light
exit surfaces 111a to the display portions for the projection image
V2a. By replacing the screen unit 11B with the screen unit 11A, the
decoration part is changed from the display portions for the
projection image V2a to the light exit surfaces 111a.
[0126] In short, in the display device 1 of First Embodiment, the
projection distance from the projector main body 12 to the incident
surface 1100 of the screen (110A to 110C) is the same whichever of
the screen units 11A to 11C is used. A change in visual effects of
the projection images V1 to V3 is caused only by the thickness and
position of the screens 110A to 110C. Because of this, the function
of adjusting or correcting the projection image in accordance with
the projection distance is able to be minimized to be simple, or
omitted. This improves the compatibility among the screen units 11A
to 11C.
[0127] In this display device 1, the screen (110A to 110C) is
replaceable together with the screen unit (11A to 11C). This makes
it possible to change the visual impressions given by the
projection images V2 and V3 on the display surfaces 1101, 1101B,
and 1101C. Therefore, the display manner of the screen is freely
changeable merely by replacing the screens (110A to 110C) in
accordance with the layout of a casino or the design of the gaming
machine, for example. Thus, the designability and the diversity of
the display manner are enhanced.
[0128] In the display device 1 provided with the screen 110A shown
in FIG. 9, it is possible to associate the light emission mode of
the light exit surfaces 111a with the projection image V1 displayed
on the display surface 1101, and it is possible to present the
display and light emission in patterns similar to each other.
Further, on the light exit surfaces 111a, lighting display is
possible in a totally different manner from the display of the
projection image. This further enhances the designability and the
diversity of the display manner.
[0129] In the present embodiment, the distance from the projector
main body 12 to the incident surface 1100 is the same whichever of
the screens 110A to 110C is used. However, the present invention is
not limited to this. For example, the incident surface may be
arranged to have a non-planar shape so that the distance is
partially different among the screens. That is, there is at least a
portion common among the screens with respect to the distance to
the incident surface, the length of the light path from the
projector main body to the common portion is the same among the
screens. Therefore, merely by changing the thickness of the common
portion, a change is brought to a projection image, to easily
enhance the visual effects.
[0130] In the display device 1 with the replaceable screens 110A to
110C shown in FIG. 9 to FIG. 11, all the incident surfaces 1100 of
the screens 110A to 110C are uniformly flat. Therefore, the
distance from the projector main body 12 to the incident surface
1100 is the same among the screens 110A to 110C. This enables the
optical system (e.g., the reflector 13) structuring the light path
from the projector main body 12 to the incident surface 1100 to
have a simple structure. Meanwhile, merely by making a difference
in the thickness of the member for the first display surface 1101
and the thickness of the members for the second display surfaces
1101B and 1101C, visual impressions given by the projection images
V2 and V3 are changed, thereby to easily enhance the visual
effects.
[0131] Further, as shown in FIG. 9 to FIG. 11, in the display
device 1, merely by replacing the screen (110A to 110C) to be
disposed at the opening 10A of the casing 10, the visual
impressions given by the projection images V2 and V3 on the display
surface (1101, 1101B, 1101C) are changed. Thus, the display manner
of the screen is freely changeable, and the designability and the
diversity of the display manner are enhanced.
Second Embodiment
[0132] The following will describe the screen unit in Second
Embodiment of the present invention, with reference to FIG. 12.
Note that elements which are the same as or similar to those in the
above-described First Embodiment are given the same reference
numerals, and descriptions thereof are omitted.
[0133] In the screen unit 11A shown in FIG. 12, the LED substrate
111 is provided behind each light exit surface 111a. On one of the
LED substrates 111, which is at the left when viewed from the back,
a relay substrate 113 is provided. The relay substrate 113 is
directly connected to the left LED substrate 111, and is connected
to the other LED substrate 111 via a connection line 114.
[0134] The relay substrate 113 is connected to the control unit in
the casing 10 via a cable 111B through a so-called board to board
connection. The connection line 114 extends from the relay
substrate 113, detours around the opening 11aa, to be connected to
the other LED substrate 111. The connection line 114 is laid using
a guide component 115 to prevent the connection line 114 from
sagging toward the incident surface 1100. The relay substrate 113
may be connected with the cable 111B via a connector 111A.
[0135] A signal from the control unit is supplied to the one LED
substrate 111 via the cable 111B and the relay substrate 113, and
supplied to the other LED substrate 111 via the relay substrate 113
and the connection line 114. This causes the LEDs on both the LED
substrates 111 to be turned on or blink. Light emitted from the
LEDs is applied frontward through the light exit surfaces 111a.
[0136] In this arrangement, the two LED substrates 111 are
connected to the control unit via the single connection cable 111B.
This simplifies the work of connection needed when replacing the
screen unit 11A with another one.
Third Embodiment
[0137] The following will describe the display device of Third
Embodiment of the present invention, with reference to FIG. 13 to
FIG. 15. Note that elements which are the same as or similar to
those in the above-described First Embodiment are given the same
reference numerals, and descriptions thereof are omitted.
[0138] As shown in FIG. 13 and FIG. 14, an LED substrate 20 is
provided on a side surface 10b of the casing 10. A movable
decoration sheet 30 is provided to be opposed to the LED substrate
20. A guide component 31 and a driving mechanism 32 are provided on
an upper portion of the side surface 10b. The guide component 31
supports the upper end of the movable decoration sheet 30 so that
the movable decoration sheet 30 is able to be guided in the
front-back direction. The driving mechanism 32 is configured to
move the movable decoration sheet 30 in the front-back
direction.
[0139] The driving mechanism 32 is connected to the control unit
provided in the casing 10. The control unit controls the operation
of the driving mechanism 32. Although not illustrated, such an LED
substrate 20, movable decoration sheet 30, guide component 31, and
driving mechanism 32 are provided also on the side surface 10c of
the casing 10.
[0140] Side portions 11b and 11c of the screen unit 11A are
respectively opposed to the above-described side surfaces 10b and
10c. At least a part of each side portion 11b, 11c that is opposed
to the corresponding LED substrate 20 is made of a
light-transmitting material, preferably a transparent material. A
fixed decoration sheet 40 is attached to the inner surface of the
side portion 11b.
[0141] Although not illustrated, such a fixed decoration sheet 40
is attached also to the inner surface of the side portion 11c.
There has been described that the part of the side portion that is
opposed to the LED substrate 20 is made of a light-transmitting
material. However, such a light-transmitting part of the side
portion 11b or 11c does not have to be provided, as long as the
side portion 11b or 11c has at least a portion to which light from
the LEDs provided on the LED substrate 20 is applied. Suppose that
the light exit surface 111a has light-transmitting property while
the side portion 11b does not have light-transmitting property. In
this case, high-contrast is provided on the light exit surface 111a
by light emitted from the LEDs and guided toward the front.
[0142] Each movable decoration sheet 30 is a light-transmitting
resin sheet of a flat rectangular shape. The movable decoration
sheet 30 has a plurality of light-guiding holes 30A corresponding
to the LEDs 20A (see FIG. 14) on the LED substrate 20. Each hole
30A opens so that the corresponding LED 20A is at least exposable
through this hole 30A. The diameter of each light-guiding hole 30A
is on the order of 1 mm, for example. The positional distribution
of the light-guiding holes 30A matches the positional distribution
of the LEDs 20A.
[0143] As shown in FIG. 14, the movable decoration sheet 30 is
movable in the front-back direction along the guide component 31,
driven by the driving mechanism 32. Thus, each light-guiding hole
30A is capable of entering the state where light from the
corresponding LED 20A is directly guided outward through the hole
30A, and the state where light from the corresponding LED 20A is
not directly guided to the outside due to misalignment (see FIG.
15A and FIG. 15B).
[0144] Similarly to the movable decoration sheet 30, each fixed
decoration sheet 40 is a light-transmitting resin sheet of a flat
rectangular shape. On a surface of the fixed decoration sheet 40,
characters, pictures and/or the like are printed. The fixed
decoration sheet 40 also has a plurality of light-guiding holes
40A. The aperture area of each light-guiding hole 40A is
substantially equal to that of the light-guiding hole 30A. The
diameter of each light-guiding hole 40A is on the order of 1 mm,
for example, similarly to the light-guiding holes 30A.
[0145] The positional distribution of the light-guiding holes 40A
matches the positional distribution of the light-guiding holes 30A.
That is, the positional distribution of the light-guiding holes 40A
of the fixed decoration sheet 40 matches the positional
distribution of the LEDs 20A. The fixed decoration sheet 40 is
attached so that the light-guiding holes 40A are respectively
opposed to the LEDs 20A.
[0146] Thus, as the movable decoration sheet 30 moves in the
front-back direction, the state of each light-guiding hole 40A
changes between the state where light from the corresponding LED
20A is directly guided outward through the light-guiding hole 40A
overlapping the corresponding hole 30A, and the state where light
from the LED 20A is not directly guided to the outside due to the
misalignment between the holes 40A and 30A (see FIG. 15A and FIG.
15B).
[0147] In this embodiment, the positional distribution of the
light-guiding holes 40A matches the positional distribution of the
light-guiding holes 30A. However, the present invention is not
limited to this. It is only required that at least one
light-guiding hole 40A is able to be aligned with the corresponding
light-guiding holes 30A. The expression "a hole is able to be
aligned with the corresponding hole" means that the holes are
positioned at least so that light from the LED is able to pass
through the light-guiding holes to the outside. The positions of
the holes are not limited to specific positions.
[0148] As shown in FIG. 15A, when the movable decoration sheet 30
is positioned so that at least a part of each LED 20A overlaps the
corresponding light-guiding hole 30A, the light-guiding hole 30A at
least partially overlaps the corresponding light-guiding hole 40A
of the fixed decoration sheet 40. In this case, light from the LED
20A is directly guided outward through the portions of the
light-guiding holes 30A and 40A overlap each other. With this, on
the side surfaces 10b and 10c of the casing 10, the characters
and/or the pictures illustrated on the fixed decoration sheet 40
are visible with relatively high intention of illumination and in
relatively high contrast.
[0149] Meanwhile, when the movable decoration sheet 30 is
positioned so that each light-guiding hole 30A does not overlap the
corresponding light-guiding hole 40A and is not aligned with the
corresponding LED 20A, as shown in FIG. 15B, light from the LED 20A
cannot go to the outside through the light-guiding holes 30A and
40A. As a result, on the side surfaces 10b and 10c of the casing
10, the characters and/or the pictures illustrated on the fixed
decoration sheet 40 are visible with relatively low intention of
illumination and in relatively low contrast.
[0150] In the display device 1 of Third Embodiment, as the movable
decoration sheet 30 moves from the position where the light-guiding
holes 30A and 40A overlap each other to the position where the
light-guiding holes 30A and 40A do not overlap each other, the
overlapping portion where each hole 30A overlaps the corresponding
hole 40A gradually decreases, which decreases the amount of light
guided from the corresponding LED 20A to the side surface 10b, 10c
through the light-guiding holes 30A and 40A.
[0151] That is, by moving the movable decoration sheet 30 relative
to the fixed decoration sheet 40 by a predetermined distance which
is equal to or longer than the diameter of each light-guiding hole
30A, 40A, the intensity of illumination changes depending on the
size of the overlapping portion. Thus, the contrast of the image(s)
shown through the decoration sheets 30 and 40 opposed to each other
is easily changeable by adjusting the intensity of illumination. As
a result, the visual effects are easily enhanced.
[0152] Further, in the display device 1 of Third Embodiment, the
LED substrates 20 and the driving mechanisms 32 are provided on the
casing 10. As compared to the device of Fourth Embodiment which
will be described later, weight reduction and simplification of the
screen unit 11A is possible. In addition, wiring work is
unnecessary.
Fourth Embodiment
[0153] The following will describe the display device of Fourth
Embodiment of the present invention, with reference to FIG. 16. The
display device 1 of Fourth Embodiment is different from that of
Third Embodiment only in the positional relationship between each
movable decoration sheets 30 and the corresponding fixed decoration
sheet 40. Therefore, elements which are the same as or similar to
those in the above-described Third Embodiment are given the same
reference numerals, and descriptions thereof are omitted.
[0154] As shown in FIG. 16, in the display device 1 of Fourth
Embodiment, the fixed decoration sheet 40 is disposed to be opposed
to the LED substrate 20 provided on the side surface 10b of the
casing 10. Meanwhile, the movable decoration sheet 30 is provided
on the side portion 11b of the screen unit 11A so that the movable
decoration sheet 30 can be opposed to the fixed decoration sheet
40.
[0155] The guide component 31 and the driving mechanism 32 are
provided on an upper portion of the side portion 11b. The guide
component 31 supports the upper end of the movable decoration sheet
30 so that the movable decoration sheet 30 is able to be guided in
the front-back direction. The driving mechanism 32 is configured to
move the movable decoration sheet 30 in the front-back direction.
The driving mechanism 32 is connected, through an unillustrated
cable, to the control unit provided in the casing 10. The control
unit controls the operation of the driving mechanism 32. Although
not illustrated, such an LED substrate 20 and fixed decoration
sheet 40 are provided also on the side surface 10c of the casing
10. Such a movable decoration sheet 30, guide component 31, and
driving mechanism 32 are provided also on the side portion 11c of
the screen unit 11A.
[0156] The fixed decoration sheet 40 is fixed so that the
positional distribution of the light-guiding holes 40A matches the
positional distribution of the LEDs 20A. Meanwhile, characters
and/or pictures are printed on a surface of each movable decoration
sheet 30. The movable decoration sheet 30 is movable along the
guide component 31 by the driving mechanism 32 in the front-back
direction. As the movable decoration sheet 30 moves, the state of
each light-guiding hole 30A changes between the state where light
from the corresponding LED 20A is directly guided outward through
the light-guiding holes 30A and 40A overlapping each other, and the
state where light from the LED 20A is not directly guided outward
due to the misalignment between the holes 40A and 30A.
[0157] That is, in the display device 1 of Fourth Embodiment, as
the movable decoration sheet 30 moves from the position where the
light-guiding holes 30A and 40A overlap each other to the position
where the light-guiding holes 30A and 40A do not overlap each
other, the overlapping portion where each hole 30A overlaps the
corresponding hole 40A gradually decreases, which decreases the
amount of light guided from the corresponding LED 20A to the side
surface 10b, 10c through the light-guiding holes 30A and 40A.
[0158] Thus, by moving the movable decoration sheet 30 relative to
the fixed decoration sheet 40 by a predetermined distance which is
equal to or longer than the diameter of each light-guiding hole
30A, 40A, the intensity of illumination changes depending on the
size of the overlapping portion. Thus, the contrast of the image(s)
shown through the decoration sheets 30 and 40 opposed to each other
is easily changeable by adjusting the intensity of illumination. As
a result, the visual effects are easily enhanced.
Fifth Embodiment
[0159] The following will describe the display device of Fifth
Embodiment of the present invention, with reference to FIG. 17 to
FIG. 20. Note that elements which are the same as or similar to
those in the above-described embodiments are given the same
reference numerals, and descriptions thereof are omitted.
[0160] As shown in FIG. 17 and FIG. 18, in the display device 1 of
Fifth Embodiment, the entire front surface of a screen unit 11D is
structured by a screen 110D having a concave surface. The entire
front surface of the screen 110D is a gently inclined concave
display surface 1101. This display device 1 does not have a light
exit surface and button.
[0161] Further, as shown in FIG. 18, an LED substrate 60 and a
reflection plate 61 are provided on the outer side of the rear
surface 10d of the casing 10. The rear surface 10d is behind the
reflector 13. On the LED substrate 60, a plurality of LEDs 60A are
mounted and arranged annularly to be opposed to the rear surface
10d. The LEDs 60A are arranged so that light can be applied to the
reflection plate 61. Light from the LEDs 60A is reflected by the
reflection plate 61, to illuminate the surrounding of the display
device 1 and the peripheral part of the screen 110A.
[0162] With this display device 1, a projection image is able to be
projected on the entire display surface 1101 of the screen 110D,
and functions and effects optically similar to those of the device
shown in FIG. 4A are brought about. In addition, decorative effects
are enhanced by light emitted from the back by the LEDs 60A.
[0163] In Fifth Embodiment, the display surface of the screen 110D
has a non-planar shape. Specifically, the screen 110D has a concave
shape with inclination. This makes it possible to display a
stereoscopic image with depth. This further enhances visual effects
and decorative effects.
[0164] In the display device 1 of Modification 1 of Fifth
Embodiment, the entire front surface of a screen unit 11E is
structured by a screen 110E, as shown in FIG. 19. A central portion
of the front surface of the screen 110E is a gently-inclined
concave first display surface 1101. Right and left end portions of
the front surface of the screen 110E are concave second display
surfaces 1101E. Each second display surface 1101E is positioned
forward of the first display surface 1101. A part of each second
display surface 1101E is located outward of the left or right end
of the first display surface 1101. The screen 110E of the display
device 1 of Modification 1 of Fifth Embodiment is formed by a
plurality of projection surface members (the first display surface
1101 and the second display surfaces 1101E) partially overlapping
one another. This makes the display surface non-planar.
[0165] Each second display surface 1101E is a surface of a
projection surface member having a thickness. The difference in the
position between the first display surface 1101 and the second
display surfaces 1101E in the front-back direction made by the
thickness defines each second display surface as a rectangular
area. In this display device 1, it is possible to project different
projection images respectively on the first display surface 1101
and the second display surfaces 1101E of the screen 110E, and
functions and effects optically similar to those of the device
shown in FIG. 4B are brought about.
[0166] As shown in FIG. 20, the display device 1 of Modification 2
of Fifth Embodiment is structured as follows. A central portion of
the front portion of a screen unit 11F is structured by a screen
110F. Left and right end portions of the screen unit 11F are
respectively structured by light exit surfaces 111a spaced apart
from the screen unit 110F by a predetermined distance. A central
portion of the front surface of the screen 110F is a
gently-inclined concave first display surface 1101. Right and left
end portions of the front surface of the screen 110F are concave
second display surfaces 1101F. Each second display surface 1101F is
positioned forward of the first display surface 1101. A part of
each second display surface 1101F is located outward of the left or
right end of the first display surface 1101. As described above,
the screen 110F of the display device 1 of Modification 2 of Fifth
Embodiment is formed by the plurality of projection surface members
(the first display surface 1101 and the second display surfaces
1101F) partially overlapping one another. This makes the display
surface non-planar.
[0167] Each second display surface 1101F is a surface of a member
having a thickness. The difference in the position between the
first display surface 1101 and the second display surfaces 1101F in
the front-back direction made by the thickness defines each second
display surface as a substantially trapezoidal area. The light exit
surfaces 111a are respectively positioned behind the portions of
the second display surfaces 1101F projecting relative to the left
and right ends of the first display surface 1101. In this display
device 1, it is possible to project different projection images
respectively on the first display surface 1101 and the second
display surfaces 1101F of the screen 110F, and functions and
effects optically similar to those of the device shown in FIG. 4C
are brought about. In addition to the above, turning on and
blinking of lights are visible through the light exit surfaces
111a. Thus, it is possible to present a display manner different
from any of the display devices described above.
[0168] Further, each of the second display surfaces 1101E, 1101F
also has a concave shape. This makes it possible to show a
stereoscopic image with depth on the second display surfaces, as
well as on the first display surface 1101. Note that second display
surfaces 1101E and 1101F may be flat. Further, the LED substrate 60
and the reflection plate 61 may be omitted as needed.
Sixth Embodiment
[0169] The following will describe the display device of Sixth
Embodiment of the present invention, with reference to FIG. 21A to
FIG. 23. Note that elements which are the same as or similar to
those in the above embodiments are given the same reference
numerals, and descriptions thereof are omitted.
[0170] The display device of Sixth Embodiment is configured to
improve visual effects and decorative characteristics by
illuminating an upper edge portion (upper side) of the screen 110A
of the screen unit 11A (FIG. 5A) of First Embodiment, for
example.
[0171] In the display device 1 of Sixth Embodiment, the rectangular
screen 110A includes an incident portion (light guiding portion)
1100 and a display portion 1101, as shown in FIG. 21A. The incident
portion has a predetermined thickness and light is transmittable
therethrough. The display portion has a predetermined thickness,
and a projected image is displayed on a surface thereof. Further,
at least one substrate (LED substrate) 70 is provided on the bottom
surface 10a of the casing 10 and in the vicinity of a lower edge
portion (lower side) of the screen 110A. A diffused reflection
portion 72 is provided at the upper edge portion (upper side) of
the incident portion (light guiding portion) 1100 of the screen
110A. The upper edge portion is opposed to the lower edge portion
(lower side) of the screen 110A. The diffused reflection portion 72
includes projections and recesses to irregularly reflect light.
[0172] One or more light emitters (LED) 71 are mounted on the
substrate 70. Light emitted from the light emitters 71 passes
through the incident portion (light guiding portion) 1100 of the
screen 110A to reach the diffused reflection portion 72. Then,
light is irregularly reflected by the diffused reflection portion
72.
[0173] The diffused reflection portion 72 is provided to extend all
over the upper edge portion of the screen 110A. The substrate 70
may be provided to extend all over the lower edge portion of the
screen 110A. Alternatively, the substrate 70 may be divided into
parts as needed, and the divided parts may be provided apart from
each other. The location and the output angle of the one or more
light emitters 71 are adjusted as needed, so that light from the
light emitters 71 reaches the whole diffused reflection portion 72
uniformly. Thus, the light emitters 71 arranged in the casing 11A
and the diffused reflection portion 72 illuminated by the light
emitters 71 constitute a light emission unit. The light emission
unit is provided so that at least one of edges of the screen 110A
is fringed with the light emission unit.
[0174] The device of Sixth Embodiment is structured as above. In
this embodiment, light from the light emitters 71 passes through
the incident portion (light guiding portion) 1100 of the screen
110A, to reach the diffused reflection portion 72. Then, light is
irregularly reflected by the diffused reflection portion 72, toward
a user. As a result, there is created a band of reflected light
which is long in the horizontal direction and with which the upper
edge portion of the screen 110A is fringed. In consequence, visual
effects and decorative effects are improved. Note that a
light-shielding member may be provided between the diffused
reflection portion 72 and the casing 10 to prevent the irregularly
reflected light from going toward the inside of the casing 10. Such
a light-shielding member is not illustrated.
[0175] As shown in FIG. 21B, light emitted from the light emitters
71 does not wholly go to the diffused reflection portion 72. A part
of light leaks through a gap between the substrate 70 and the
bottom surface 10a. This reduces the efficiency of light
application. Further, there is a possibility that the leakage light
is scattered in the casing 10 to reduce the brightness and
resolution of images from the projector main body 12.
[0176] To deal with this, a light-shielding member 73 is provided
at the gap in Sixth Embodiment, to prevent the leakage of light
into the casing 10. The light-shielding member 73 is a narrow and
long strip-like thin plate. The light-shielding member 73 is
secured to the lower edge portion of the screen 110A and to and end
portion of the bottom surface 10a. For example, the light-shielding
member 73 is attached to these portions via an adhesive. The
material for the light-shielding member 73 may be any material such
as metal and resin, as long as the material has a light-shielding
function. In light of workability, it is desirable to use a
flexible material.
[0177] Further, as shown in FIG. 21B, a light-shielding member 74
may be provided around the light emitters 71 to prevent light from
the light emitters 71 from going to the display portion 1101 of the
screen 110A.
[0178] Sixth Embodiment deals with the case where the diffused
reflection portion 72 is provided at the upper edge portion (upper
side) of the incident portion (light guiding portion) 1100 of the
screen 110A. The present invention is not limited to this
arrangement. The diffused reflection portion 72 may be provided at
a portion of the screen unit 11A that is above the screen 110A.
Such a modification is not illustrated. As described above, the
light-shielding member is provided at an edge portion of the screen
110A. The light-shielding member is configured to shield the
display portion of the screen 110A from light traveling from the
light emission unit (the light emitters 71 and the diffused
reflection portion 72) toward the display portion.
[0179] It is a matter of course that the light emitting unit of
Sixth Embodiment is applicable to the screen units 11B and 11C
described in First Embodiment.
[0180] In Sixth Embodiment, light emitted from the light emitters
71 on the substrate 70 provided in the vicinity of the lower edge
portion of the screen 110A is reflected to create a band of light
with which the upper edge portion of the screen 110A is fringed.
This improves the visual effects and decorative characteristics of
the display device 1. In addition, the leakage of light from the
light emitters 71 to the inside of the casing 10 is prevented. This
enhances the efficiency of light application and eliminates the
effect on images projected on the screen 110A. The substrate 70 may
be provided in the vicinity of the upper edge portion, the left
edge portion, and/or the right edge portion of the screen 110A, and
the diffused reflection portion 72 may be provided, so as to be
opposed thereto, at the lower edge portion, right edge portion,
and/or the left edge portion of the incident portion (light guiding
portion) 1100. With this, the edge portion(s) (the upper edge
portion, the lower edge portion, and/or the left edge portion) of
the screen 110A is/are illuminated, as needed.
[0181] (Modification 1) In Modification 1, a light-shielding member
(side wall) 75 is provided between the substrate 70 and the casing
10 to prevent the leakage of light into the casing 10, as shown in
FIG. 22. The light-shielding member 75 is a thin plate-like member
having a predetermined height. In this arrangement, functions and
effects similar to those in the above Sixth Embodiment are
provided.
[0182] (Modification 2) In Modification 2, the substrate 70 having
a light-shielding function is oriented vertically, as shown in FIG.
23. The substrate 70 itself prevents the leakage, to the casing 10,
of light emitted from the light emitters. In this arrangement,
functions and effects similar to those in the above Sixth
Embodiment are provided. In addition, reduction in the number of
components is achievable.
Seventh Embodiment
[0183] The following will describe the display device of Seventh
Embodiment of the present invention, with reference to FIG. 24 to
FIG. 26. Note that elements which are the same as or similar to
those in the above embodiments are given the same reference
numerals, and descriptions thereof are omitted.
[0184] The display device of Seventh Embodiment is configured to
improve visual effects and decorative characteristics by
illuminating an upper edge portion of a concave screen 110D, as
shown in FIG. 17, for example.
[0185] In the display device 1 of Seventh Embodiment, the screen
110D includes the incident portion (light guiding portion) 1100 and
the display portion 1101, as shown in FIG. 24. The incident portion
1100 has a predetermined thickness and light is transmittable
therethrough. The display panel 1101 has a predetermined thickness,
and a projected image is displayed on a surface thereof. Further,
at least one substrate (LED substrate) 70 is provided on the bottom
surface 10a of the casing 10 and in the vicinity of a lower edge
portion of the screen 110D. The diffused reflection portion 72 is
provided at the upper edge portion of the incident portion (light
guiding portion) 1100 of the screen 110D. The diffused reflection
portion 72 includes projections and recesses to irregularly reflect
light.
[0186] Similarly to that in Sixth Embodiment, the diffused
reflection portion 72 is provided to extend all over the upper edge
portion of the screen 110D. The substrate 70 may be provided to
extend all over the lower edge portion of the screen 110D.
Alternatively, the substrate 70 may be divided into parts as
needed, and the divided parts may be provided apart from each
other. The location and the output angle of the one or more light
emitters 71 are adjusted as needed, so that light from the light
emitters 71 reaches the whole diffused reflection portion 72
uniformly.
[0187] As a result, there is created a band of reflected light
which is long in the horizontal direction and with which the upper
edge portion of the screen 110D is fringed. In consequence, visual
effects and decorative effects are improved. In FIG. 24, the LED
substrate 60 and the reflection plate 61 are provided behind the
reflector 13. The LED substrate 60 and the reflection plate 61 may
be omitted as needed.
[0188] To prevent the leakage of light emitted from the light
emitters 71 through a gap between the substrate 70 and the bottom
surface 10a, the light-shielding member 73 is provided in the gap.
With this, leakage of light into the casing 10 is prevented.
[0189] Further, a light-shielding member may be provided around the
light emitters 71 to prevent light emitted from the light emitters
71 from going to the display portion 1101 of the screen 110D (see
FIG. 21B).
[0190] In Seventh Embodiment, light emitted from the light emitters
71 on the substrate 70 provided in the vicinity of the lower edge
portion of the screen 110D is reflected to create a band of light
with which the upper edge portion of the screen 110D is fringed,
similarly to Sixth Embodiment. This improves the visual effects and
decorative characteristics of the display device 1. In addition,
the leakage of light from the light emitters 71 to the inside of
the casing 10 is prevented. This enhances the efficiency of light
application and eliminates the effect on the image projected on the
screen 110D. Similarly to Sixth Embodiment, the substrate 70 may be
provided in the vicinity of the upper edge portion, the left edge
portion, and/or the right edge portion of the screen 110D, and the
diffused reflection portion 72 may be provided, so as to be opposed
thereto, at the lower edge portion, right edge portion, and/or the
left edge portion of the incident portion (light guiding portion)
1100. With this, the edge portion(s) (the upper edge portion, the
lower edge portion, and/or the left edge portion) of the screen
110D is/are illuminated, as needed.
[0191] (Modification 1) In Modification 1, to prevent the leakage
of light emitted from the light emitters 71 into the casing 10
through the gap between the substrate 70 and the bottom surface
10a, the bottom surface 10a having a light-shielding function is
shaped to close the gap, as shown in FIG. 25. In this arrangement,
functions and effects similar to those in the above Seventh
Embodiment are provided. In addition, reduction in the number of
components is achievable.
[0192] (Modification 2) In Modification 2, the substrate 70 has a
light-shielding function is oriented vertically, as shown in FIG.
26. The substrate 70 itself prevents the leakage of light emitted
from the light emitters into the casing 10. In this arrangement,
functions and effects similar to those in the above Seventh
Embodiment are provided. In addition, reduction in the number of
components is achievable.
[0193] Also in Modifications 1 and 2, the LED substrate 60 and the
reflection plate 61 may be omitted, as needed.
Eighth Embodiment
[0194] The following will describe the display device of Eighth
Embodiment of the present invention, with reference to FIG. 27 to
FIG. 33. Note that elements which are the same as or similar to
those in the above embodiments are given the same reference
numerals, and descriptions thereof are omitted.
[0195] FIG. 27 is a perspective view of a display device G1 of
Eighth Embodiment. As shown in
[0196] FIG. 27, the display device G1 includes a casing G10, and a
screen unit G11. The entire front surface of the screen unit G11 is
structured by a screen G110 having a concave shape. The casing G10
includes a base body G101 and a projector accommodating body
G102.
[0197] FIG. 28 is an exploded perspective view of the display
device G1. As shown in FIG. 28, the base body G101 has a
flat-plate-like rear portion G101a and a bottom portion G101b.
These portions respectively form a rear wall and a bottom wall of
the casing G10. The projector main body 12 is attached to the
bottom portion G101b to be placed thereon. The reflector 13 is
provided along the inner surface of the rear portion G101a.
[0198] The projector accommodating body G102 is attached to the
bottom portion G101b so as to cover the projector main body 12.
With this, the projector accommodating body G102 accommodates the
projector main body 12 in its internal space. The internal space
opens toward the top. This enables light for images emitted from
the projector main body 12 to reach the reflector 13 disposed along
the rear portion G101a. The screen unit G11 is attached to cover
the reflector 13. The screen unit G11 is configured so that light
reflected by the reflector 13 is applied to the screen G110.
[0199] As described above, the display device G1 of Eighth
Embodiment functions as a transmission-type projector device
similar to those of the above-described embodiments. However, the
display device G1 is not limited to this. The display device may be
a device incorporating therein a liquid crystal display or an
organic EL (electroluminescence) display.
[0200] For the sake of convenience, a direction orthogonal to a
main surface of the rear portion G101a may be referred to as a
front-back direction in the following description of Eighth
Embodiment. The position of the screen unit G11 relative to the
rear portion G101a in the front-back direction may be expressed as
"in front (frontward) of the display device G1", and the direction
opposite to the front direction may be referred to as "back
(backward, rearward) direction". The left and right as seen from
the front of the device may be referred to as the right (rightward)
and the left (leftward) of the display device G1, respectively.
Further, the direction including the rightward and leftward
directions may be referred to as a left-right direction.
Furthermore, the direction orthogonal to the front-back direction
and to the left-right direction may be referred to as an up-down
direction or a height direction.
[0201] FIG. 29 is a perspective view of the display device G1,
viewed from the back. As shown in FIG. 27 to FIG. 29, a light
guiding plate G61 is disposed behind the rear portion G101a of the
base body G101 so as to be parallel to the rear portion G101a. That
is, the light guiding plate G61 is disposed to be parallel to the
up-down direction and the left-right direction. The light guiding
plate G61 is configured so that light is transmittable therethrough
and light having entered the plate is guided in the plate. While
the light guiding plate G61 is a flat rectangular plate in Eighth
Embodiment, the shape of the light guiding plate G61 is not limited
to this. The light guiding plate G61 may have any shape such as a
circular shape. As shown in FIG. 29, the light guiding plate G61 is
secured to the base body G101 by a rear substrate cover G62.
[0202] The display device G1 is disposed, for example, above an
external device such as a gaming machine. In this case, the display
device G1 is oriented so that the screen G110 faces obliquely
frontward and downward, to be opposed to the face of a user. It is
preferable to structure the light guiding plate G61, in terms its
position and/or its size, so that the light guiding plate G61 can
be seen above the screen G110 from the user in the above
situation.
[0203] FIG. 30 is an exploded perspective view of the display
device G1, viewed from the back. As shown in FIG. 30, the light
guiding plate G61 has a substantially circular opening G61a
penetrating therethrough in its thickness direction. The light
guiding plate G61 has an end surface (opening-side end surface
G61b) which extends circularly and faces the opening G61a. In other
words, the opening-side end surface G61b defines the opening G61a
of the light guiding plate G61. While the opening G61a has a
substantially circular shape in Eighth Embodiment, the shape of the
opening is not limited to this. The opening may have a quadrangular
shape. Further, a part of the circumferential edge of the opening
G61a may overlap the circumferential edge of the light guiding
plate G61. That is, the opening G61a may be formed by cutting off a
part of the light guiding plate G61.
[0204] An LED substrate G60 is disposed between the light guiding
plate G61 and the base body G101. That is, a plurality of LEDs G60A
are provided on the LED substrate G60 which is different from the
light guiding plate G61. The LEDs G60A are mounted on the LED
substrate G60. The LEDs G60A are disposed to be opposed to the
opening-side end surface G61b of the light guiding plate G61. To be
more specific, the LEDs G60A are provided at equal intervals on the
LED substrate G60 so as to surround the opening G61a along the
opening-side end surface G61b. When the opening G61a is a cut-out
opening as described above, the LEDs G60A are arranged in an arc
shape along the cut-out opening. Each LED G60A has a light emission
port opposed to the opening-side end surface G61b. Thus, light is
applied from the LEDs G60A on the LED substrate G60 radially toward
the opening-side end surface G61b of the light guiding plate G61.
The optical axis of light applied from each LED G60A is parallel to
the light guiding plate G61. This enables light having entered the
light guiding plate G61 to travel through the light guiding plate
G61 and to reach an outer end surface G61c forming the
circumferential edge of the light guiding plate G61. The thickness
of the light guiding plate G61 is longer than the length of each
LED G60A in the front-back direction. This prevents the rear
substrate cover G62, by which the light guiding plate G61 is
secured, from coming into contact with the LEDs G60A in the opening
G61a of the light guiding plate G61.
[0205] As such, light emitted from the LEDs G60A disposed in the
opening G61a of the light guiding plate G61 enters through the
opening-side end surface G61b of the light guiding plate G61, and
then light is guided in the light guiding plate G61, to illuminate
the whole area of the outer end surface G61c of the light guiding
plate G61. In other words, the plurality of LEDs G60A, which are
disposed outside the casing G10 and on the opposite side of the
casing from the screen G110, and the light guiding plate G61
illuminated by the LEDs G60A constitute a light emission unit.
Thus, light emitted from the LEDs G60A is radially dispersed in the
light guiding plate G61 and reaches the outer end surface G61c.
This makes it possible to illuminate the whole circumference of the
light guiding plate G61 annularly. As a result, the thus
illuminated light guiding plate G61 is visible from all the
directions relative to the display device G1, which makes it easier
to identify the external device, such as a gaming machine, to which
the display device G1 is attached.
[0206] The LED substrate G60 is configured so that lighting of the
LEDs G60A can be controlled individually. The LED substrate G60
includes a memory (not illustrated) which stores a plurality of
lighting patterns. The LEDs G60A are controlled in accordance with
one of the patters corresponding to a signal transmitted from
outside. For example, the LED substrate G60 selects one of the
lighting patterns corresponding to a signal indicating the gaming
state or the like transmitted from the external device (e.g.,
gaming machine) connected to the display device G1, or in response
to an operation performed through an input device (not illustrated)
included in the display device G1. Then, the LED substrate G60
controls the LEDs G60A based on the thus selected pattern. For
example, a drive effect in which light streams along the
circumferential edge of the light guiding plate G61 is provided by
controlling the LEDs G60A in accordance with the lighting pattern
to turning on the LEDs G60A sequentially in order of their
arrangement. Further, when full-color LEDs are used as the LEDs
G60A, various notifications using the color of the LEDs are
possible. For example, the following arrangement is possible: when
an input operation to call an attendant or the like is performed by
a user through a touch sensor or the like, which will be described
later, the LEDs are turned on in red; and when there is an anomaly
in the external device (e.g., gaming machine), the LEDs blink in
yellow.
[0207] The light guiding plate G61 has portions processed to have a
reflection function to reflect, in a direction of the thickness
toward the base body G101, a part of light emitted from the LEDs
G60A and passing through the light guiding plate G61. Such
processing to the light guiding plate G61 may be made to form a
shape with designability. In this case, illumination of this shape
appears on a main surface of the light guiding plate G61 when the
LEDs are turned on. The following will specifically describe the
processing onto the light guiding plate G61 for reflectivity, with
reference to an illustration of a pattern of path of light
traveling through the light guiding plate G61.
[0208] FIG. 31A and FIG. 31B each is an explanatory diagram showing
an example of a pattern of path of light emitted from the LEDs G60A
and traveling through the light guiding plate G61. As shown in FIG.
31A, when no processing for reflection is made to the path of light
emitted from the LEDs G60A, light emitted from the LEDs G60A enters
the light guiding plate G61 through the opening-side end surface
G61b, travels inside the light guiding plate G61 in a planar
direction (up-down direction), and then reaches the outer end
surface G61c. With this, the entire circumference of the light
guiding plate G61 is annularly illuminated.
[0209] Meanwhile, as shown in FIG. 31B, the light guiding plate G61
has reflecting portions G61d which reflect light traveling in the
planar direction of the light guiding plate G61 (up-down
direction). In Eighth Embodiment, each reflecting portion G61d is a
dent formed on the main surface of the light guiding plate G61 that
is opposite from the LED substrate G60. The reflecting portion G61d
has a reflecting surface, the normal of which is inclined 45
degrees toward the thickness direction (frontward) relative to the
path of light emitted from the LEDs G60A. Thus, light arriving at
the reflecting portion G61d is reflected toward the LED substrate
G60 in the thickness direction of the light guiding plate G61
(i.e., frontward). The reflecting portions G61d may be provided
inside the light guiding plate by laser processing, for
example.
[0210] FIG. 32 is an explanatory diagram showing an example of
illumination manners of the light guiding plate G61. As shown in
FIG. 32, light is radially emitted from the LEDs G60A (see FIG. 30)
arranged in the opening G61a. Light reaches the outer end surface
G61c, to illuminate the circumferential edge of the light guiding
plate G61. A part of light emitted from the LEDs G60A (see FIG. 30)
is reflected frontward by the reflecting portions G61d, to form
bright spots on the main surface of the light guiding plate G61.
Because the reflecting portions G61d are collectively provided so
as to form a design, the bright spots formed by light reflected by
the reflecting portions G61d form the design by way of
pointillism.
[0211] FIG. 33 is an exploded perspective view of the display
device G1, viewed from the back. As shown in FIG. 33, the plurality
of LEDs G60A are provided on the LED substrate G60 which is
different from the light guiding plate G61. The LED substrate G60
has alignment portions G60e. The light guiding plate G61 has
alignment portions G61e. These alignment portions G60e and G61e are
provided to align the substrate and the plate with each other so
that the LEDs G60A are positioned to be opposed to the opening-side
end surface G61b of the light guiding plate G61.
[0212] To be more specific, the alignment portions G60e are four
through holes respectively provided at four corners of the light
guiding plate G61, each penetrating the plate G61 in the front-back
direction. The alignment portions G61e are four through holes
respectively corresponding to the four alignment portions G60e. The
rear substrate cover G62 also has alignment portions G62e. The rear
substrate cover G62 and the LED substrate G60 sandwich the light
guiding plate G61 between them.
[0213] On the rear portion G101a of the base body G101, there are
provided alignment members G101e for aligning the components in
association with the alignment portions G60e and G61e of the LED
substrate G60 and the light guiding plate G61. Each alignment
member G101e has a cylindrical shape with a cross section
engageable in the alignment portions G60e, G61e, and G62e. The
alignment member G101e is longer than the total sum of the
thicknesses of the LED substrate G60, the light guiding plate G61,
and the rear substrate cover G62. The alignment member G101e
projects rearward from the base body G101.
[0214] As such, the LED substrate G60, the light guiding plate G61,
and the rear substrate cover G62 are provided, attachably to and
detachably from the base body G101. These components are aligned
with the base body G101 by inserting the alignment members G101e of
the base body G101 into the alignment portions G60e, G61e, and G62e
of the LED substrate G60, the light guiding plate G61, and the rear
substrate cover G62, sequentially.
[0215] When the light guiding plate G61 is aligned, the alignment
portions G61e are first aligned with projecting end portions of the
alignment members G101e of the base body G101 and the alignment
members G101e are inserted into the alignment portions G61e. Then,
the light guiding plate G61 is moved frontward while the movement
in the up-down direction and the left-right direction is restricted
by the alignment members G101e, to be placed on the LED substrate
G60. Thus, the movement of the light guiding plate G61 is
restricted by the alignment members G101e only to the movement in
the front-back direction. This prevents the light guiding plate G61
from coming into contact with the LEDs G60A provided on the LED
substrate G60 during the alignment.
[0216] (Outline of Eighth Embodiment)
[0217] The display device G1 of Eighth Embodiment includes: the
light-transmitting light guiding plate G61 provided so as to be
attachable to and detachable from the base body G101, and including
the opening-side end surface G61b of a predetermined shape which
forms the opening G61a penetrating the plate G61 in its thickness
direction; the LEDs G60A arranged to be opposed to the opening-side
end surface G61b forming the opening G61a of the light guiding
plate G61, the LEDs G60A being arranged to be aligned along the
opening-side end surface G61b, and the light guiding plate G61
including the reflecting portions G61d processed to reflect, in the
thickness direction of the light guiding plate G61, a part of light
emitted from the LEDs G60A and guided into the light guiding plate
G61 through the opening-side end surface G61b.
[0218] In the above arrangement, light emitted from the LEDs G60A
arranged in the opening of the light guiding plate G61 enters
through the opening-side end surface G61b of the light guiding
plate G61, and then the light is guided in the light guiding plate
G61, to illuminate the whole area of the outer end surface G61c of
the light guiding plate G61. Meanwhile, a part of light guided in
the light guiding plate G61 exits through a surface of the light
guiding plate G61, reflected by the reflecting portions G61d of the
light guiding plate G61. The reflecting portions G61d have been
processed to reflect light. Thus, light emitted from the LEDs G60A
is radially dispersed in the light guiding plate G61 and reaches
the outer end surface G61c. This makes it possible to illuminate
the whole circumference of the light guiding plate G61 annularly.
As a result, the thus illuminated light guiding plate G61 is
visible from all the directions relative to the display device G1,
which makes it easier to identify the external device (e.g., a
gaming machine) to which the display device G1 is attached.
Further, the designability of the display device G1 is improved by
light exiting from the surface of the light guiding plate G61. In
addition, because the light guiding plate G61 is attachable to and
detachable from the base body G101, it is possible to replace one
light guiding plate G61 with another light guiding plate G61
processed to reflect light to provide a different design. Thus, the
display device G1 is applicable to various types of gaming
machines.
[0219] Further, in the display device G1 of Eighth Embodiment, the
LEDs G60A are provided on the LED substrate G60 which is different
from the light guiding plate G61. The LED substrate G60 and the
light guiding plate G61 respectively include the alignment portions
G60e and the alignment portions G61e for aligning them so that the
LEDs G60A are positioned to be opposed to the opening-side end
surface G61b of the light guiding plate G61.
[0220] In the above arrangement, the position of the detachable
light guiding plate G61 is determined by the alignment portions
G60e and G61e so that the LEDs G60A are opposed to the opening-side
end surface G61b of the light guiding plate G61. Thus, the light
guiding plate G61 is accurately aligned by the alignment portions
G60e and G61e. This prevents reduction of visual effects caused by
misalignment.
[0221] Furthermore, in the display device G1 of Eighth Embodiment,
the base body G101 includes the alignment members G101e which align
the components in association with the alignment portions G60e and
G61e of the LED substrate G60 and the light guiding plate G61.
[0222] In the above arrangement, the alignment is performed by the
alignment members G101e provided on the base body G101 and the
alignment portions G60e and G61e of the LED substrate G60 and the
light guiding plate G61, which are associated with one another.
With this, the LED substrate G60 and the light guiding plate G61
are aligned with each other, and are also aligned with the base
body G101. As a result, the reduction of visual effects caused by
misalignment is further prevented.
[0223] In the display device G1 of Eighth Embodiment, the opening
G61 a has a substantially circular shape, and the LEDs G60A are
arranged annularly along the opening-side end surface G61b forming
the opening G61a.
[0224] In this arrangement, the LEDs G60A are arranged annularly
along the opening-side end surface G61b forming the substantially
circular opening G61a. Because the LEDs G60A are arranged annularly
along the opening-side end surface G61b of the light guiding plate
G61, the number of the LEDs G60A can be minimized. Further, this
enable light from the LEDs G60A to more efficiently enter the light
guiding plate G61, to more effectively illuminate the outer end
surface G61c of the light guiding plate G61.
Ninth Embodiment
[0225] The following will describe the display device of Ninth
Embodiment of the present invention, with reference to FIG. 34 to
FIG. 37. Note that elements which are the same as or similar to
those in the above embodiments are given the same reference
numerals, and descriptions thereof are omitted. In Ninth
Embodiment, a description will be given for an alternative of the
projector accommodating body G102 (see FIG. 28 and FIG. 29) which
has been described in Eighth Embodiment. The other elements and the
like are similar to those in Eighth Embodiment, and therefore the
description thereof are omitted.
[0226] FIG. 34 is a perspective view of a projector accommodating
body F102 included in a display device F1 of Ninth Embodiment. As
shown in FIG. 34, the projector accommodating body F102 is attached
to the base body G101 so as to cover the projector main body 12
(see FIG. 28), below the screen unit G11. With this, the projector
accommodating body F102 accommodates the projector main body 12 in
its internal space. Similarly to that in Eighth Embodiment, the
internal space opens toward the top. This enables light for images
emitted from the projector main body 12 to reach the reflector 13
disposed along the rear portion G101a. The projector accommodating
body F102 of Ninth Embodiment further has a function as an input
device configured to receive an input by a user, and a function of
giving a notice to the user. The following will specifically
describe the projector accommodating body F102.
[0227] The projector accommodating body F102 includes an exterior
panel F1021 forming the front outer shape of the projector
accommodating body F102. The exterior panel F1021 includes a touch
area F1021a, a speaker portion F1021c, and a light receiving
portion F1021d.
[0228] The touch area F1021a is a rectangular input area defined so
as to correspond to the shape of a touch sensor F1022 (see FIG.
35), which will be described later. The touch area F1021a has a
light-transmitting portion F1021b through which light is
transmittable. That is, light applied from the back side is
transmittable through the light-transmitting portion F1021b. In
Ninth Embodiment, the light-transmitting portion F1021b has a
rectangular shape indicating the range of the touch area F1021a,
and a picture of a hand and a text of "CALL" are provided in the
rectangle. However, the light-transmitting portion F1021b is not
limited to this. Further, in Ninth Embodiment, the exterior panel
F1021 is made of a light-transmitting material, and printing is
performed thereon with non- transmissible ink so that the
light-transmitting portion F1021b remains. However, the present
invention is not limited to this. For example, the
light-transmitting portion may be formed by providing a
light-transmitting material to be flush with the exterior panel
F1021. Alternatively, the light-transmitting portion may be merely
a through hole penetrating the exterior panel F1021. Further
alternatively, the light-transmitting portion F1021b may be formed
by a through hole penetrating the exterior panel F1021 with an
optical sheet (optical film) provided on the back side of the
exterior panel F1021. The optical sheet (optical film) is
configured to irregularly reflect light.
[0229] The speaker portion F1021c is constituted by through holes
through which sound from a speaker F10253 (see FIG. 35 and FIG. 36)
is output to the outside. The speaker F10253 will be described
later. The light receiving portion F1021d is an input device
configured to receive a signal such as an infrared signal from the
outside.
[0230] FIG. 35 is an exploded perspective view of the projector
accommodating body F102. As shown in FIG. 35, the projector
accommodating body F102 includes: the exterior panel F1021
described above; the touch sensor F1022; a light guiding plate
F1023; an LED array F1024 provided on an upper edge of the light
guiding plate F1023; a substrate F1025; a frame F1026; and an
accommodating base body F1027.
[0231] The accommodating base body F1027 and the exterior panel
F1021 form the outer shape of the projector accommodating body
F102. The touch sensor F1022, the light guiding plate F1023, the
LED array F1024, and the substrate F1025 are accommodated in the
space created between the accommodating base body F1027 and the
exterior panel F1021. Further, the accommodating base body F1027 is
provided with light receiving elements through which the speaker
and the light receiving portion F1021d described above receive an
optical signal transmitted from the outside.
[0232] The accommodating base body F1027 accommodates the projector
main body 12 (see FIG. 28) in its space which is on the opposite
side from the exterior panel F1021. The speaker F10253 is provided
at an upper left portion on the front surface of the accommodating
base body F1027. Sound from the speaker F10253 is output through
the speaker portion F1021c.
[0233] The substrate F1025 has a function of receiving an input
from the touch sensor F1022 and from the light receiving portion
F1021d, and a function of controlling lighting of the LED array
F1024.
[0234] The LED array F1024 is an LED unit in which a plurality of
full-color LEDs are arranged in parallel. The LED array F1024 emits
a plane of light from the upper edge of the light guiding plate
F1023 into the light guiding plate F1023. The light guiding plate
F1023 is provided behind the touch sensor F1022. A reflection sheet
is provided on the back surface of the light guiding plate F1023,
while a diffusion sheet is provided on the front surface of the
light guiding plate F1023. Light emitted from the LED array F1024
travels through the light guiding plate F1023 while being reflected
by the reflection sheet, to exit from the plane of the diffusion
sheet provided on the front side of the light guiding plate F1023.
That is, the light guiding plate F1023 has a function of guiding
light emitted from the LED array F1024 toward the
light-transmitting portion F1021b of the exterior panel F1021
provided on the front side, via the touch sensor F1022. With this,
the light-transmitting portion F1021b, through which light is
transmittable, is illuminated.
[0235] Through the touch sensor F1022, light is transmittable. The
touch sensor F1022 is disposed behind the exterior panel F1021 so
as to correspond to the touch area F1021a. This enables the touch
sensor F1022 to detect an input by a user made through a touch of
the touch area F1021a.
[0236] The touch sensor F1022, the light guiding plate F1023 with
the LED array F1024, and the substrate F1025 are attached to the
frame F1026, and then these members are attached to a central
portion of the accommodating base body F1027 that is on the side
closer to the exterior panel F1021.
[0237] FIG. 36 is a block diagram showing the electrical structure
of the projector accommodating body F102. As shown in FIG. 36, the
substrate F1025 includes a control circuit F10250, a ROM (read only
memory) F10251, a RAM (random access memory) F10252, a
communication interface F10254. The control circuit F10250 includes
a CPU (central processing unit), and a circuit for controlling the
LED array F1024 and the speaker F10253. The ROM F10251 stores
therein lighting patterns and the like used for lighting control of
the LED array. The RAM F10252 temporarily stores information input
from the outside, for example. The communication interface F10254
is for communicating with an external device 2 such as a gaming
machine, and with the LED substrate G60 (see FIG. 30), for example.
The communication with the external device may be performed via the
LED substrate G60 or via an unillustrated control board controlling
the LED substrate G60. Further, signals do not have to be
transmitted directly from the external device. Signals may be
transmitted indirectly, i.e., via other devices, such as a server
and a controller in a casino, for example.
[0238] As described above, the substrate F1025 is capable of
changing the illumination for the light-transmitting portion F1021b
based on information from the touch sensor F1022 and/or the
external device. Further, the substrate F1025 is connected to the
LED substrate G60 which illuminates the light guiding plate G61
disposed on the back side of the display device G1. This structure
makes it possible to provide effects and/or notification by the
illumination for the light-transmitting portion F1021b and the
illumination for the light guiding plate G61 which are synchronized
with each other.
[0239] FIG. 37 is a flowchart of a control process executed by the
control circuit F10250. The operation of the control circuit F10250
will be described with reference to FIG. 37.
[0240] As shown in FIG. 37, the control circuit F10250 first
determines whether an input has been received (S1). The input
includes: an input to the touch sensor F1022 by a user; and an
input of a signal (e.g., a signal indicating a gaming state)
transmitted from an external device such as a gaming machine
connected to the display device. If there is no input (S1: NO), the
step S1 is repeated. Note that the control process may include a
step performed when there is no input. For example, illumination of
the light-transmitting portion F1021b (LED array F1024) in a
predetermined manner may be continued unless an input to the touch
sensor F1022 is received.
[0241] When there is an input (S1: YES), the control circuit F10250
discerns the type of the input (S2). Then, the control circuit
F10250 determines the object to be controlled (S3). That is, the
control circuit F10250 selects the actuator to be controlled based
on the type of the input. The actuator includes: the LED array
F1024, the speaker F10253, and the LEDs G60A on the LED substrate
G60. That is, the ROM F10251 stores therein a data table in which
the controlled actuators are associated with the types of the
input. The control circuit F10250 selects the actuator associated
with the concerned type of the input referring to the data
table.
[0242] Then, the control circuit F10250 selects a control pattern
according to which the actuator is controlled (S4). That is, the
ROM F10251 stores therein a data table in which the control
patterns of the actuators are associated with the types of the
input. The control circuit F10250 selects the control pattern
associated with the actuator to be controlled, referring to the
data table.
[0243] Then, the control circuit F10250 controls the actuator in
accordance with the selected control pattern (S5). Then, the
process ends. To be more specific, when an input is made by a user
to the touch sensor F1022, the control circuit performs control to
change the illumination manner of the light-transmitting portion
F1021b (LED array F1024) to the pattern associated with the type of
the input. When controlling the LEDs G60A in response to an input
to the touch sensor F1022, the control circuit F10250 transmits a
control signal to the LED substrate G60 or to a control board
controlling the LED substrate G60, to control the LEDs G60A.
[0244] Further, when touch input is performed by a user, the
control circuit F10250 may instruct the LED substrate G60 to emit
light from the LEDs G60A in a predetermined manner and/or instruct
a projector controller to display a predetermined image on the
screen G110. When the control circuit F10250 instructs the LED
substrate G60 to emit light, the light guiding plate G61, which is
visible from a lateral side of the display device and is larger
than the main body, is turned on in the predetermined manner (e.g.,
in red), in addition to the light-transmitting portion F1021b of
the touch area F1021a and the screen G110 in front of a user. This
makes it easier for the administrator of the external device to
find the display device through which the administrator is called
(the external device provided with the display device G1 through
which the administrator is called). The administrator arriving at
that external device (e.g., a gaming machine) generally turns off
the illumination through operation on the touch sensor F1022 (touch
area F1021a). However, the device may be arranged so that the
lighting manner of the LEDs G60A is changed by the LED substrate
F1025 over the time elapsing from the touch input. For example, the
control circuit F10250 may control the LEDs G60A so as to: turn on
the LEDs G60A in red in response to an input by a user; change the
lighting manner so that the LEDs G60A blink in red, 30 seconds
after the input by the user; and further change the lighting manner
so that the LEDs G60A blink in red at a speed higher than before,
one minute after the input by the user. This enables the
administrator of the external device to understand, at a glance,
how much time has passed from the input by the user, even if the
administrator is away from the external device. Therefore, if the
administrator is called from a plurality of external devices, the
above arrangement enables the administrator to prioritize the
devices to be dealt with, leading to appropriate service for
users.
[0245] As described above, the control circuit F10250 performs
control to change the lighting manner of the LEDs G60A, which are
the light sources for the light guiding plate G61, when a touch
input to the touch area F1021a is made. Further, the control
circuit F10250 performs control to change the lighting manner of
the LEDs G60A depending on the time having passed from the touch
input to the touch area F1021a. Herein, "to change the lighting
manner" includes an operation to turn on the turned-off LEDs, and
an operation to change the lighting state of the turned-on LEDs
from one state to another state. The lighting manner of the LEDs
G60A may be changed intermittently, at predetermined timing as
described above, or may be changed continuously over the time from
the input. For example, the color or the blinking speed of the LEDs
may be changed gradually. The control of the LEDs G60A based on the
touch input to the touch area F1021a does not have to be performed
by transmitting an instruction signal from the control circuit
F10250 to the LED substrate G60 and/or the projector controller, as
described above. For example, the display device F1 may be
configured so that the LEDs G60A are connected to the control
circuit F10250 to enable the control circuit F10250 to directly
control the LEDs G60A.
[0246] (Outline of Ninth Embodiment)
[0247] The display device F1 of Ninth Embodiment includes: the
exterior panel F1021 having the light-transmitting portion F1021b
through which light is transmittable and which is provided in the
touch area touchable by a user; the light-transmitting touch sensor
F1022 which is provided behind the exterior panel F1021 so as to
correspond to the touch area F1021a, and is configured to detect a
touch input to the touch area F1021a; the LED array F1024; the
light guiding plate F1023 which is provided behind the touch sensor
F1022, and is configured to guide light emitted from the LED array
F1024 to the light-transmitting portion F1021b of the exterior
panel F1021; and the control circuit F10250 configured to perform
lighting control of the LED array F1024.
[0248] In the above arrangement, when a touch input to the touch
area F1021a is made by a user, the touch sensor F1022 detects the
touch input. Meanwhile, the LED array F1024 is turned on under the
lighting control by the control circuit F10250, and light emitted
from the LED array F1024 is guided to the light-transmitting
portion F1021b, so that the user is able to see light through the
light-transmitting portion F1021b. With this arrangement, light
emitted from the LED array F1024 is applied to the
light-transmitting portion F1021b in the touch area F1021a of the
exterior panel F1021. This makes it easier for the user to
understand where to touch. Further, the input is made to the touch
area F1021a formed as a planar surface, instead of a known call
button having a movable portion. This prevents failures caused by
dirt or the like entering a space around the movable portion, and
failures caused by fatigue in the movable portion.
[0249] In the display device F1 of Ninth Embodiment, the control
circuit F10250 performs control so as to change the lighting manner
of the LED array F1024 when there is a touch input to the touch
area F1021a.
[0250] In the above arrangement, the change of the lighting manner
of the LED array F1024 illuminating the light-transmitting portion
F1021b enables the user to confirm that the touch input by the
player has been received. This prevents the user from repeatedly
touching the touch area F1021a before a staff person comes, which
may cause deterioration of the surface of the touch area.
[0251] The display device F1 of Ninth Embodiment may further
include: the light-transmitting light guiding plate G61 provided so
as to be attachable to and detachable from the base body G101, and
having the opening-side end surface G61b of a predetermined shape
which forms an opening penetrating the plate G61 in its thickness
direction; the LEDs G60A arranged to be opposed to the opening-side
end surface G61b forming the opening G61a of the light guiding
plate G61, and the display device may be arranged such that: the
LEDs G60A are arranged to be aligned along the opening-side end
surface G61b, and the light guiding plate G61 includes the
reflecting portions G61d processed to reflect, in the thickness
direction of the light guiding plate G61, a part of light emitted
from the LEDs G60A and guided into the light guiding plate G61
through the opening-side end surface G61b; and the control circuit
F10250 performs control to change the lighting manner of the LEDs
G60A to a predetermined lighting manner, when there is a touch
input to the touch area F1021a.
[0252] In this arrangement, in response to a touch input by a user,
the lighting manner of light emitted from the LEDs G60A is changed
to the predetermined lighting manner. Light radially spreads in the
light guiding plate G61 and reaches the outer end surface of the
plate G61, and thereby the entire circumference of the light
guiding plate G61 is lighted annularly. As a result, the light
guiding plate G61 lighted in the predetermined lighting manner is
visible from any direction relative to the display device F1. This
makes it easier for the administrator (e.g. the administrator of a
casino) to find the external device (e.g., gaming machine) provided
with the display device F1 through which the touch input has been
made. Further, the designability of the display device F1 is
improved by light exiting from the surface of the light guiding
plate G61. In addition, because the light guiding plate G61 is
detachable from the base body, it is possible to replace one light
guiding plate G61 with another light guiding plate G61 processed to
reflect light to provide a