U.S. patent application number 16/530194 was filed with the patent office on 2020-06-18 for vehicle lamp.
This patent application is currently assigned to SL Corporation. The applicant listed for this patent is SL Corporation. Invention is credited to Won Hong Jeon, Da Il Kang, Sun Kyoung Park.
Application Number | 20200189449 16/530194 |
Document ID | / |
Family ID | 68337130 |
Filed Date | 2020-06-18 |
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United States Patent
Application |
20200189449 |
Kind Code |
A1 |
Jeon; Won Hong ; et
al. |
June 18, 2020 |
VEHICLE LAMP
Abstract
Provided is to a vehicle lamp capable of displaying images with
various colors or shapes. The vehicle lamp includes an image
display for displaying an image formed by a plurality of image
forming units, each of the plurality of image forming units
including a light source unit and a light guide for emitting light
incident from the light source unit; and a controller configured to
generate an image at least one of the plurality of image forming
units. In particular, the plurality of image forming units
comprises a first image forming unit comprising a first light
source unit and a first light guide; and a second image forming
unit comprising a second light source unit and a second light
guide. The light emitted from the first light guide is transmitted
through the second light guide and emitted.
Inventors: |
Jeon; Won Hong;
(Gyeongsan-si, KR) ; Park; Sun Kyoung;
(Gyeongsan-si, KR) ; Kang; Da Il; (Gyeongsan-si,
KR) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
SL Corporation |
Daegu |
|
KR |
|
|
Assignee: |
SL Corporation
|
Family ID: |
68337130 |
Appl. No.: |
16/530194 |
Filed: |
August 2, 2019 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H02J 7/0049 20200101;
H02J 7/0047 20130101; F21S 41/24 20180101; B60Q 1/2607 20130101;
H02J 7/0021 20130101; B60Q 3/85 20170201; F21S 43/239 20180101;
F21S 43/245 20180101; H02J 7/0048 20200101; B60Q 11/007 20130101;
B60Q 3/18 20170201 |
International
Class: |
B60Q 1/26 20060101
B60Q001/26; B60Q 3/18 20060101 B60Q003/18; B60Q 3/85 20060101
B60Q003/85; B60Q 11/00 20060101 B60Q011/00; H02J 7/00 20060101
H02J007/00 |
Foreign Application Data
Date |
Code |
Application Number |
Dec 12, 2018 |
KR |
10-2018-0159827 |
Feb 28, 2019 |
KR |
10-2019-0023729 |
Claims
1. A vehicle lamp comprising: an image display for displaying an
image formed by a plurality of image forming units, each of the
plurality of image forming units including a light source unit and
a light guide for emitting light incident from the light source
unit; and a controller configured to generate an image by at least
one of the plurality of image forming units, wherein the plurality
of image forming units comprises: a first image forming unit
comprising a first light source unit and a first light guide
through which light incident from the first light source unit is
emitted; and a second image forming unit comprising a second light
source unit and a second light guide through which light incident
from the second light source unit is emitted, wherein the light
emitted from the first light guide is transmitted through the
second light guide and emitted.
2. The vehicle lamp of claim 1, wherein the first light source unit
and the second light source unit generate light with different
colors.
3. The vehicle lamp of claim 1, wherein a surface of the first
light guide and a surface of the second light guide are disposed to
face each other, and wherein emitting surfaces of the first light
guide and the second light guide are disposed to face a same
direction.
4. The vehicle lamp of claim 1, wherein an image displayed by the
image display have at least one color among a color of light
generated from the first light source unit, a color of light
generated from the second light source unit, and a color obtained
by mixing the light generated from the first light source unit and
the light generated from the second light source unit.
5. The vehicle lamp of claim 1, wherein a first reflection pattern
and a second reflection pattern are formed on a surface of each of
the first light guide and the second light guide to reflect the
light incident from the first light source unit and the second
light source unit to an emitting surface, and wherein each of the
first image forming unit and the second image forming unit forms an
image having a shape that corresponds to an area where the first
reflection pattern and the second reflection pattern are
formed.
6. The vehicle lamp of claim 5, wherein the first reflection
pattern and the second reflection pattern are formed in an area in
which an image formed by each of the first image forming unit and
the second image forming unit is formed separately from each
other.
7. The vehicle lamp of claim 5, wherein the first reflection
pattern and the second reflection pattern are formed in an area
where at least a part of an image formed by each of the first image
forming unit and the second image forming unit is overlapped.
8. The vehicle lamp of claim 1, wherein the first light source unit
and the second light source unit are disposed proximate to one side
ends of the first light guide and the second light guide, and
wherein the vehicle lamp further comprises a light obstruction unit
disposed between the first light source unit and the second light
source unit.
9. The vehicle lamp of claim 8, wherein the light obstruction unit
is configured to absorb at least a part of light generated from at
least one of the first light source unit and the second light
source unit.
10. The vehicle lamp of claim 8, wherein the light obstruction unit
is configured to reflect at least a part of light generated from at
least one of the first light source unit and the second light
source unit.
11. The vehicle lamp of claim 8, wherein the light obstruction unit
is formed by extending one end to the other end to a direction from
the one side ends of the first light guide and the second light
guide toward the other side ends of the first light guide and the
second light guide, and a surface that connects the one end and the
other end is inclined at a predetermined angle with respect to an
extending direction of the light obstruction unit.
12. The vehicle lamp of claim 11, wherein the surface that connects
the one end and the other end comprises a first surface facing the
first light source unit and a second surface facing the second
light source unit, and wherein a distance between the first surface
and the second surface becomes smaller from one end to the other
end of the light obstruction unit.
13. The vehicle lamp of claim 8, wherein each of the first light
source unit and the second light source unit comprises a plurality
of light sources disposed at a predetermined distance, and wherein
a diffusion pattern for diffusing light generated from one of the
plurality of light sources is formed on at least one surface of the
light obstruction unit.
14. The vehicle lamp of claim 1, wherein the controller causes at
least one of a first image formed by the first image forming unit,
a second image formed by the second image forming unit, and an
image combined with the first image and the second image to be
displayed from the image display.
15. The vehicle lamp of claim 1, wherein the controller causes the
first light source unit and the second light source unit to be
sequentially turned on.
16. The vehicle lamp of claim 1, wherein the controller causes the
first light source unit and the second light source unit to be
simultaneously turned on.
17. The vehicle lamp of claim 1, further comprising a state
detector for detecting a charging state of a battery, wherein the
controller causes the image to be formed from the image display
based on the detected charging state.
18. The vehicle lamp of claim 1, further comprising an illuminance
sensor, wherein the controller adjusts brightness of image
displayed by the image display based on a sensed illuminance.
19. The vehicle lamp of claim 18, wherein the illuminance sensor is
disposed in a direction in which the image display is installed.
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of priority from Korean
Patent Application No. 10-2018-0159827 filed on Dec. 12, 2018 and
Korean Patent Application No. 10-2019-0023729 filed on Feb. 28,
2019, which applications are herein incorporated by reference in
their entirety.
BACKGROUND
1. Technical Field
[0002] The present disclosure relates to a vehicle lamp, and more
particularly to a vehicle lamp capable of displaying images with
various colors or shapes.
2. Description of the Related Art
[0003] Generally, a vehicle is equipped with various lamps having
an illumination function for easily confirming an object positioned
in the vicinity of the vehicle at low light condition driving
(e.g., at night), and a signaling function for notifying other
vehicle or road users of the driving state of the vehicle. For
example, the main purpose of head lamps and fog lamps is the
illumination function, and the main purpose of turn signal lamps,
position lamps, tail lamps, brake lamps, or the like is the
signaling function.
[0004] In recent years, research on electric vehicles has been
actively carried out in view of the possibility of solving
environmental pollution and energy problems. Accordingly, the
electric vehicle may be provided with a lamp for illuminating and
signaling purposes and a lamp for allowing the driver to easily
recognize the charging state of the battery. The electric vehicle
is a vehicle that mainly uses a battery to drive a motor to obtain
power, and is classified as battery-only electric vehicles and
hybrid electric vehicles. The battery-only electric vehicle uses
battery power to drive the motor to obtain power, and recharges the
battery when necessary. The hybrid electric vehicle uses an
internal combustion engine as the main driving force, and uses
power from the the motor as auxiliary power.
[0005] When electric power of the battery is low, the battery is
charged at a charging station, and the driver waits near the
charging station until the charging of the battery is completed
through a lamp that indicates a charging state of the battery. As
such, the vehicle has various lamps, and if each lamp is separately
provided, the space required for installing the lamp increases.
Therefore, there is a need for a method of sufficiently exhibiting
the function of each lamp while reducing the space required for
installing various lamps.
SUMMARY
[0006] A problem to be solved by the present disclosure is to
provide a vehicle lamp capable of sufficiently exhibiting each
function while reducing the space required for the installation of
various lamps for different functions. Problems of the present
disclosure are not limited to the above-mentioned problem, and
other problems not mentioned may be clearly understood by a person
skilled in the art from the following description.
[0007] According to an aspect of the present invention, a vehicle
lamp is provided. The vehicle lamp may include an image display for
displaying an image formed by a plurality of image forming units,
each of the plurality of image forming units including a light
source unit and a light guide for emitting light incident from the
light source unit; and a controller configured to generate an image
by at least one of the plurality of image forming units. In
particular, the plurality of image forming units may include a
first image forming unit including a first light source unit and a
first light guide through which light incident from the first light
source unit is emitted; and a second image forming unit including a
second light source unit and a second light guide through which
light incident from the second light source unit is emitted. The
light emitted from the first light guide may be transmitted through
the second light guide and emitted.
[0008] Other specific details of the present disclosure are
included in the detailed description and drawings.
[0009] A vehicle lamp according to an exemplary embodiment of the
present disclosure has one or more of the following benefits. Light
emitted from one of light guides of the plurality of image forming
units may be transmitted through the other one of the light guides
to form images suitable for lamps having different functions.
Therefore, each function may be sufficiently achieved while
reducing the space for installing various lamps.
[0010] The benefits of the present disclosure are not limited to
the above-mentioned benefits, and other benefits not mentioned may
be clearly understood by a person skilled in the art from the
claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1 is a block diagram showing the configuration of a
vehicle lamp according to an exemplary embodiment of the present
disclosure;
[0012] FIGS. 2 and 3 are perspective views showing an image display
according to an exemplary embodiment of the present disclosure,
[0013] FIGS. 4 and 5 are exploded perspective views showing an
image display according to an exemplary embodiment of the present
disclosure;
[0014] FIG. 6 is a cross-sectional view showing an image display
according to an exemplary embodiment of the present disclosure;
[0015] FIG. 7 is a schematic view showing an optical path by a
first image forming unit according to an exemplary embodiment of
the present disclosure;
[0016] FIG. 8 is a schematic view showing an optical path by a
second image forming unit according to an exemplary embodiment of
the present disclosure;
[0017] FIG. 9 is a schematic view showing an optical path by a
third image forming unit according to an exemplary embodiment of
the present disclosure;
[0018] FIGS. 10 and 11 are schematic views showing optical paths by
a light obstruction unit according to an exemplary embodiment of
the present disclosure;
[0019] FIGS. 12 to 14 are schematic views showing images displayed
by an image display according to an exemplary embodiment of the
present disclosure;
[0020] FIG. 15 is a block diagram showing the configuration of a
vehicle lamp according to another exemplary embodiment of the
present disclosure;
[0021] FIG. 16 is a schematic view showing a vehicle installed with
an image display according to another exemplary embodiment of the
present disclosure;
[0022] FIG. 17 is a block diagram showing the configuration of a
vehicle lamp according to still another exemplary embodiment of the
present disclosure; and
[0023] FIG. 18 is a schematic view showing an illuminance sensor
installed in a vehicle according to still another exemplary
embodiment of the present disclosure.
DETAILED DESCRIPTION
[0024] Advantages and features of the present disclosure and
methods of accomplishing the same may be understood more readily by
reference to the following detailed description of exemplary
embodiments and the accompanying drawings. The present disclosure
may, however, be embodied in many different forms and should not be
construed as being limited to the exemplary embodiments set forth
herein. Rather, the exemplary embodiments are provided so that this
disclosure will be thorough and complete and will fully convey the
concept of the disclosure to those skilled in the art, and the
present disclosure will only be defined by the appended claims.
Throughout the specification, like reference numerals in the
drawings denote like elements. In some exemplary embodiments,
well-known steps, structures and techniques will not be described
in detail to avoid obscuring the disclosure.
[0025] The terminology used herein is for the purpose of describing
exemplary embodiments only and is not intended to be limiting of
the invention. As used herein, the singular forms "a", "an" and
"the" are intended to include the plural forms as well, unless the
context clearly indicates otherwise. It will be further understood
that the terms "comprises" and/or "comprising," when used in this
specification, specify the presence of stated features, integers,
steps, operations, elements, and/or components, but do not preclude
the presence or addition of one or more other features, integers,
steps, operations, elements, components, and/or groups thereof. As
used herein, the term "and/or" includes any and all combinations of
one or more of the associated listed items.
[0026] Exemplary embodiments of the present disclosure are
described herein with reference to plan and cross-section
illustrations that are schematic illustrations of exemplary
embodiments of the present disclosure. As such, variations from the
shapes of the illustrations as a result, for example, of
manufacturing techniques and/or tolerances, are to be expected.
Thus, exemplary embodiments of the present disclosure should not be
construed as limited to the particular shapes of regions
illustrated herein but are to include deviations in shapes that
result, for example, from manufacturing. In the drawings,
respective components may be enlarged or reduced in size for
convenience of explanation.
[0027] Hereinafter, the present disclosure will be described with
reference to the drawings for explaining a vehicle lamp according
to exemplary embodiments of the present disclosure.
[0028] FIG. 1 is a block diagram showing the configuration of a
vehicle lamp according to an exemplary embodiment of the present
disclosure. Referring to FIG. 1, a vehicle lamp 1 according to an
exemplary embodiment of the present disclosure may include an image
display 100 and a controller 200. The vehicle lamp 1 of the present
disclosure may be used for various lamps installed in a vehicle
such as a head lamp, a tail lamp, a fog lamp, a daytime running
lamp, a position lamp, a turn signal lamp, a backup lamp, or the
like. Further, it may be used for the purpose of a welcoming
function for emphasizing the communication between the vehicle and
a driver by allowing the vehicle to show a welcoming response to
the driver when the driver approaches or board the vehicle. In
addition, it may be used to display a charging state of a battery
of an electric vehicle which drives a motor using the power of the
battery to obtain the power, to allow the driver to more easily
check the charging state of the battery.
[0029] FIGS. 2 and 3 are perspective views showing an image display
according to an exemplary embodiment of the present disclosure.
FIGS. 4 and 5 are exploded perspective views showing an image
display according to an exemplary embodiment of the present
disclosure. FIG. 6 is a cross-sectional view showing an image
display according to an exemplary embodiment of the present
disclosure. Referring to FIGS. 2 to 6, the image display 100
according to an exemplary embodiment of the present disclosure may
include a plurality of image forming units 110, 120, and 130, in
which the image display 100 may display an image formed by at least
one of the plurality of image forming units 110, 120, and 130.
[0030] In an exemplary embodiment of the present disclosure, the
image display 100 may receive power from a battery of a vehicle.
However, the present disclosure is not limited thereto, and the
image display 100 may be supplied with power from a battery or a
power supply provided separately from the battery of the vehicle.
In an example of the exemplary embodiment of the present
disclosure, the plurality of image forming units 110, 120, and 130
may be arranged along the front and rear direction. When the
plurality of image forming units 110, 120, and 130 are arranged in
the front and rear direction, it is assumed that the front refers
to a direction in which light is emitted to display an image from
the image display 100. Depending on a direction or position in
which the image display 100 is installed, a direction actually
referred to by the front and rear may vary.
[0031] Hereinafter, each of the plurality of image forming units
110, 120, and 130 of the exemplary embodiment of the present
disclosure will be referred to as a first image forming unit 110, a
second image forming unit 120, and a third image forming unit 130
in a direction from the rear toward the front along a direction in
which light is emitted from the image display 100. In an exemplary
embodiment of the present disclosure, the image display 100 may
include three image forming units 110, 120, and 130. However, it is
merely an example for facilitating understanding of the present
disclosure. The present disclosure is not limited thereto, and the
image display 100 may include two or more image forming units
arranged in a direction in which light is emitted from the image
display 100.
[0032] The first image forming unit 110 may include a first light
source unit 111 and a first light guide 112, in which when light is
generated from the first light source unit 111, a first image may
be formed by the first light guide 112. The first light source unit
111 may include at least one light source disposed at one side end
of the first light guide 112, in which the first light guide 112
may allow light incident from the first light source unit 111 to be
emitted to an emitting surface 112a. The first light guide 112 may
be formed with a first reflection pattern 112b on an opposite side
of the emitting surface 112a to allow light incident from the first
light source unit 111 to be reflected by the emitting surface 112a,
in which an area where the first reflection pattern 112b is formed
may vary based on a shape of the first image formed by the first
image forming unit 110.
[0033] In an exemplary embodiment of the present disclosure, the
first reflection pattern 112b may be formed to have a protrusion
and depression shape by the surface processing of the first light
guide 112. However, the present disclosure is not limited thereto,
and the first reflection pattern 112b may be in the form of a film
and be attached to the first light guide 112.
[0034] The second image forming unit 120 may be disposed in front
of the first image forming unit 110. The second image forming unit
120 may include a second light source unit 121 and a second light
guide 122, in which when light is generated from the second light
source unit 121, a second image may be formed by the second light
guide 122. The second light source unit 121 may include at least
one light source disposed at one end of the second light guide 122,
in which the second light guide 122 may allow light incident from
the second light source unit 121 to be emitted to an emitting
surface 122a.
[0035] The second light guide 122 may be formed with a second
reflection pattern 122b on an opposite side of the emitting surface
122a to allow light incident from the second light source unit 121
to be reflected by the emitting surface 122a, in which an area
where the second reflection pattern 122b is formed may vary based
on a shape of the second image formed by the second image forming
unit 120. In an exemplary embodiment of the present disclosure, the
second reflection pattern 122b may be formed to have a protrusion
and depression shape by the surface processing of the second light
guide 122. However, the present disclosure is not limited thereto,
and the second reflection pattern 122b may be in the form of a film
and be attached to the second light guide 122.
[0036] In particular, the first light guide 112 and the second
light guide 122 may be disposed to allow one surface thereof to
face each other, and the emitting surface 112a of the first light
guide 112 and the emitting surface 122a of the second light guide
122 may be disposed to face the same direction. Accordingly, light
emitted through the emitting surface 112a of the first light guide
112 may be transmitted through the second light guide 122 and
emitted.
[0037] The third image forming unit 130 may be disposed in front of
the second image forming unit 120. The third image forming unit 130
may include a third light source unit 131 and a third light guide
132, in which when light is generated from the third light source
unit 131, a third image may be formed by the third light guide 132.
The third light source unit 131 may include at least one light
source disposed at one side end of the third light guide 132, in
which the third light guide 132 may serve to allow light incident
from the third light source unit 131 to be emitted to an emitting
surface 132a.
[0038] The third light guide 132 may be formed with a third
reflection pattern 132b on an opposite side of the emitting surface
132a to allow light incident from the third light source unit 131
to be reflected by the emitting surface 132a, in which an area
where the third reflection pattern 132b is formed may vary based on
a shape of the third image formed by the third image forming unit
130. In an exemplary embodiment of the present disclosure, the
third reflection pattern 132b may be formed to have a protrusion
and depression shape by the surface processing of the third light
guide 132. However, the present disclosure is not limited thereto,
and the third reflection pattern 132b may be in the form of a film
and be attached to the third light guide 132.
[0039] In particular, the second light guide 122 and the third
light guide 132 may be disposed to allow one surface thereof to
face each other, and the emitting surface 122a of the second light
guide 122 and the emitting surface 132a of the third light guide
132 may be disposed to face the same direction. Accordingly, light
emitted through the emitting surface 122a of the second light guide
122 may be transmitted through the third light guide 132 and
emitted.
[0040] Further, since the emitting surface 112a of the first light
guide 112 and the emitting surface 122a of the second light guide
122 are disposed to face the same direction, light emitted through
the emitting surface 112a of the first light guide 112 may be
transmitted through the second light guide 122 and the third light
guide 132 and emitted. In other words, it may be understood that
when the image display 100 includes a plurality of image forming
units, light emitted from one of the plurality of image forming
units may be transmitted through all of the light guides positioned
in front of the light guide. For example, when the image display
100 includes two image forming units, light emitted from the light
guide of the image forming portion disposed most rearward may be
transmitted through one light guide disposed in front of the light
guide. When the image display 100 includes four image forming
units, light emitted from the light guide of the image forming
portion disposed most rearward may be transmitted through all three
light guides disposed in front of the light guide.
[0041] FIG. 7 is a schematic view showing an optical path by a
first image forming unit according to an exemplary embodiment of
the present disclosure. FIG. 8 is a schematic view showing an
optical path by a second image forming unit according to an
exemplary embodiment of the present disclosure. FIG. 9 is a
schematic view showing an optical path by a third image forming
unit according to an exemplary embodiment of the present
disclosure. Referring to FIG. 7, light L1 incident from the first
light source unit 111 to the first light guide 112 may be reflected
by the first reflection pattern 112b of the first light guide 112
to the emitting surface 112a and be emitted, and light emitted from
the emitting surface 112a of the first light guide 112 may be
transmitted through the second light guide 122 and the third light
guide 132 and be emitted, thereby forming the first image.
[0042] Referring to FIG. 8, light L2 incident from the second light
source unit 121 to the second light guide 122 may be reflected by
the second reflection pattern 122b of the second light guide 122 to
the emitting surface 122a and be emitted, and light emitted from
the emitting surface 122a of the second light guide 122 may be
transmitted through the third light guide 132 and be emitted,
thereby forming the second image. Referring to FIG. 9, light L3
incident from the third light source unit 131 to the third light
guide 132 may be reflected by the third reflection pattern 132b of
the third light guide 132 to the emitting surface 132a and be
emitted, thereby forming the third image.
[0043] As described above, an image may be formed by each of the
first image forming unit 110, the second image forming unit 120,
and the third image forming unit 130. The image display 100 may
cause at least one image to be formed based on the light source
unit in which light is generated among the first to third light
source units 111, 121, 131. A color of an image displayed by the
image display 100 may be determined based on a color of light
generated from the first light source unit 111, the second light
source unit 121, and the third light source unit 131.
[0044] In an exemplary embodiment of the present disclosure, it is
described that light with different colors is generated from the
first light source unit 111, the second light source unit 121, and
the third light source unit 131, respectively. Hereinafter, in an
exemplary embodiment of the present disclosure, it is described
that light with a first color is generated from the first light
source unit 111, light with a second color is generated from the
second light source unit 121, and light with a third color is
generated from the third light source unit 131. In particular, it
may be understood that the generation of light with the first color
from the first light source unit 111, the generation of light with
the second color from the second light source unit 121, and the
generation of light with the third color from the third light
source unit 131 mean that the first image has the first color, the
second image has the second color, and the third image has the
third color.
[0045] When lights with different colors are generated from the
first light source unit 111, the second light source unit 121, and
the third light source unit 131, the vehicle lamp 1 of the present
disclosure may be used for two or more lamps among various lamps
installed in a vehicle. As an example, white light may be generated
as the first color from the first light source unit 111, yellow
light may be generated as the second color from the second light
source unit 121, and blue light may be generated as the third color
from the third light source unit 131. In this case, when the
vehicle lamp 1 of the present disclosure is used as a daytime
running lamp or a position lamp, the second light source unit 121
and the third light source unit 131 may be turned off and only the
first light source unit 111 may be turned on. Further, when the
vehicle lamp 1 of the present disclosure is used as a turn signal
lamp, the first light source unit 111 and the third light source
unit 131 may be turned off and only the second light source unit
121 may be turned on. In addition, when the vehicle lamp 1 of the
present disclosure displays the charging state of the battery, all
of the first to third light sources 111, 121, and 131 may be turned
on at the same time or sequentially turned on based on a
predetermined lighting sequence or the like.
[0046] According to the exemplary embodiment of the present
disclosure, it is unnecessary to individually install lamps used
for different functions or a lamp for indicating the charging state
of the battery. Therefore, the required installation space may be
reduced, the configuration may be simplified, and the cost may be
decreased, compared with the installation space required when each
lamp is separately installed.
[0047] A color of an image displayed from the image display 100 may
have one of the first color, the second color, and the third color
based on the light source unit in which light is generated among
the first light source unit 111, the second light source unit 121,
and the third light source unit 131. Further, the color of the
image displayed from the image display 100 may have a fourth color
in which at least two of the first to third colors are mixed. The
fourth color may collectively refer to a color in which at least
two of the first to third colors are mixed, and it may be
understood that the fourth color has various colors based on the
mixed colors among the first to third colors.
[0048] The image display 100 may display an image having the fourth
color in addition to the first to third colors. Therefore, in order
to give a visual effect in the process of forming images with the
first to third colors alternately, the image display 100 may
provide a visual effect in which the color of the image is
gradually changed when switching from one to another of the first
to third colors. In an example, images with the first to third
colors may be sequentially formed at regular intervals by the image
display 100. From a state where an image with the first color is
formed, when the brightness of light generated from the first light
source unit 111 gradually decreases and the brightness of light
generated from the second light source unit 121 gradually
increases, an image with the fourth color in which the first color
and the second color are mixed may be formed during the switch from
the first color to the second color.
[0049] Similarly, from a state where an image with the second color
is formed, when the brightness of light generated from the second
light source unit 121 gradually decreases and the brightness of
light generated from the third light source unit 131 gradually
increases, an image with the fourth color in which the second color
and the third color are mixed may be formed during the switch from
the second color to the third color. As such, the exemplary
embodiment of the present disclosure may provide a visual effect
such as a gradation effect that the image displayed from the image
display 100 is gradually changed from the first color to the fourth
color to the second color, and similarly, gradually changed from
the second color to the fourth color to the third color.
[0050] Images formed by the first to third image forming units 110,
120, and 130 may have shapes that correspond to areas in which the
reflection patterns 112b, 122b, and 132b are formed in the
respective light guides 112, 122, and 132, in which when light is
generated from two or more light sources of the first to third
light sources 111, 121, and 131, a combination image in which two
or more images are combined may be formed. The combination image
may have a shape in which two or more of the first to third images
are separated from each other, and may have a shape in which some
of two or more of the first to third images overlap, and may have a
shape in which the entire first to third images overlap.
[0051] When the combination image has a shape in which two or more
of the first to third images are separated from each other, the
combination image may respectively include areas having two or more
colors of the first to third colors. When the combination image has
a shape in which at least some of two or more of the first to third
images overlap, the combined image may include an area having two
or more colors of the first to third colors and an area having the
fourth color in which two or more colors are mixed.
[0052] In the first to third image forming units 110, 120, and 130,
the first to third light guides 112, 122 and 132 may be arranged
along a direction in which light is emitted from the image display
portion 100, and the first to third light source units 111, 121,
and 131 may be disposed near one side ends of the first to third
light guides 112, 122 and 132. Therefore, light generated from the
first to third light source units 111, 121, and 131 may be incident
on other adjacent light guides as well as the first to third light
guides 112, 122, and 132. Further, in this case, the image formed
by the image display 100 may have a color different from the
desired color. In view thereof, according to the exemplary
embodiment of the present disclosure, light obstruction units 140
and 150 may be positioned between the first and second light
sources 111 and 121 and the second and third light sources 121 and
131, respectively, thereby preventing light generated from each of
the first to third light sources 111, 121, and 131 from being
incident on a light guide other than the corresponding light
guide.
[0053] Hereinafter, in the exemplary embodiment of the present
disclosure, the light obstruction unit 140 disposed between the
first and second light source units 111 and 121 may be referred to
as a first light obstruction unit, and the light obstruction unit
150 disposed between the second light source unit 121 and the third
light source unit 131 may be referred to as a second light
obstruction unit. The number of the light obstruction units may be
varied based on the number of the image forming units included in
the image display portion 100.
[0054] In an exemplary embodiment of the present disclosure, both
ends of the first light obstruction unit 140 and the second light
obstruction unit 150 may be formed to be connected to each other.
It may be understood that it is to simplify the assembly of the
first light obstruction unit 140 and the second light obstruction
unit 150 compared to the case where the first light obstruction
unit 140 and the second light obstruction unit 150 are separately
assembled.
[0055] FIG. 10 is a schematic view showing a first light
obstruction unit and a second light obstruction unit according to
an exemplary embodiment of the present disclosure. Referring to
FIG. 10, one end of the first light obstruction unit 140 may be
disposed proximate to one side ends of the first light guiding part
112 and the second light guiding part 122, and the other end of the
first light obstruction unit 140 may be formed to extend toward the
other side ends of the first light guide 112 and the second light
guide 122 through a space between the first light guide 112 and the
second light guide 122.
[0056] The first light obstruction unit 140 may include surfaces
141 and 142 connecting one end and the other end. Hereinafter, in
the exemplary embodiment of the present disclosure, among the
surfaces 141 and 142 connecting the one end and the other end of
the first light obstruction unit 140, a surface facing the first
light source unit 111 may be referred to as a first surface 141 and
the surface facing the second light source unit 121 may be referred
to as a second surface 142. The first surface 141 of the first
light obstruction unit 140 may obstruct light L12 directed to the
second light guide 122 of light L11 and L12 generated from the
first light source unit 111. The second surface 142 of the first
light obstruction unit 140 may obstruct light L22 directed to the
first light guide 112 of lights L21, L22, and L23 generated from
the second light source unit 121.
[0057] Similarly, one end of the second light obstruction unit 150
may be disposed proximate to one side ends of the second light
guiding part 122 and the third light guiding part 132, and the
other end of the second light obstruction unit 150 may be formed to
extend toward the other side ends of the second light guide 122 and
the third light guide 132 through a space between the second light
guide 122 and the third light guide 132.
[0058] The second light obstruction unit 150 may include a first
surface 151 that faces the second light source unit 121 and a
second surface 152 that faces the third light source unit 131. The
first surface 151 may obstruct light L23 directed to the third
light guide 132 of lights L21, L22, and L23 generated from the
second light source unit 121. The second surface 152 may obstruct
light L32 directed to the second light guide 122 of light L31 and
L32 generated from the third light source unit 131.
[0059] The first light obstruction unit 140 and the second light
obstruction unit 150 may use a black color light absorbing member
to obstruct light. A reflection layer made of a material having a
high reflectance such as aluminum or chromium may be formed on the
first and second surfaces 141 and 151 and the second surfaces 142
and 152 to obstruct light. In an exemplary embodiment of the
present disclosure below, a reflective layer may be formed on the
first surfaces 141 and 151 and the second surfaces 142 and 152.
[0060] As shown in FIG. 11, a distance between the first surfaces
141 and 151 and the second surfaces 142 and 152 of the first light
obstruction unit 140 and the second light obstruction unit 150 may
be formed to have a predetermined inclination angle from one end to
the other end. Such configuration may allow light generated from
the first light source unit 111, the second light source unit 121,
and the third light source unit 131 to reach a relatively farther
position. In other words, when a distance (e.g., width or
thickness) between the first surface 141 and 151 and the second
surface 142 and 152 is the same from one end to the other end, a
position where light reflected by the first light obstruction unit
140 and the second light obstruction unit 150 reaches, as shown by
the dotted line in FIG. 11, may be relatively close (e.g.,
proximate). When the distance between the first surface 141 and 151
and the second surface 142 and 152 decreases from one end to the
other end, the position where the light reflected by the first
light obstruction unit 140 and the second light obstruction unit
150 reaches may be relatively distant.
[0061] A shape of the first light obstruction unit 140 and the
second light obstruction unit 150 is not limited to the above
example, and it may be formed to have various inclination angles
based on on the position where the light reflected by the first
light obstruction unit 140 and the second light obstruction unit
150 reaches. In the above exemplary embodiment, two light
obstruction units may be used as the light obstruction units 140
and 150. It is because three image forming units are used as the
plurality of image forming units 110, 120, and 130. As the number
of image forming units increases, the number of light obstruction
units may also increase. As an example, when the number of image
forming units is n (n.gtoreq.2), n-1 (n.gtoreq.2) light obstruction
units may be used.
[0062] Further, when light is reflected by the first light
obstruction unit 140 and the second light obstruction unit 150, a
diffusion pattern may be formed on the first surface 141 and 151
and the second surface 142 and 152, respectively. This diffusion
pattern is for preventing a difference in brightness due to the
spacing of the light sources included in each of the first, second,
and third light source units 111, 121, and 131. In other words, the
light sources included in the first light source unit 111, the
second light source unit 121, and the third light source unit 131
may be disposed to have a predetermined distance or more to prevent
structural interference. In this case, the brightness of light may
be relatively lower in a distance between the adjacent light
sources, and the brightness of the image formed by the image
display 100 may become uneven.
[0063] In the exemplary embodiment of the present disclosure, when
the light is reflected by the first light obstruction unit 140 and
the second light obstruction unit 150, a diffusion pattern may be
formed to diffuse the light reflected from the first surfaces 141
and 151 and the second surfaces 142 and 152, thereby reducing the
brightness difference or unevenness due to the distance between the
adjacent light sources to have the overall uniform brightness of
the image formed by the image display 100.
[0064] The controller 200 may cause an image by at least one of the
first to third image forming units 110, 120, and 130 to be formed,
and the controller 200 may cause an image to be sequentially formed
based on a predetermined order. The image formed by the controller
200 may include first to third images formed by the first to third
image forming units 110, 120, and 130 and a combination image in
which two or more of the first to third images are combined. For
example, the controller 200 may cause the first to third images to
be sequentially and individually displayed as shown in FIG. 12.
Further, the controller 200 may cause the first to third images
overlapped on each other to be sequentially displayed as shown in
FIG. 13. In addition, the controller 200 may cause the first image,
an image in which the first image and the second image are
combined, the second image, an image in which the second image and
the third image are combined, the third image, and an image in
which the first image and the third image are combined to be
sequentially displayed as shown in FIG. 14.
[0065] In an example shown in FIG. 12, the first to third light
sources 111, 121, and 131 may be sequentially turned on and off to
allow the second light source unit 121 to be turned on after the
first light source unit 111 is turned off, and the third light
source unit 131 to be turned on after the second light source unit
121 is turned off, and thus, the first to third images may be
individually displayed. In an example shown in FIG. 13, the second
light source unit 121 may be turned on after a predetermined time
elapses in a state in which the first light source unit 111 is
turned on, and the third light source unit 131 may be turned on
after the predetermined time elapses in a state in which the first
light source unit 111 and the second light source unit 121 are
turned on together, and thus, the first to third light source units
111, 121, and 131 may be sequentially overlapped and displayed. In
an example shown in FIG. 14, the brightness of each of the light
source units 111, 121, and 131 may gradually decrease or increase
in the process of sequentially forming the first to third images,
and thus, a combination image in which two images are combined may
be formed while switching from the current image to the next
image.
[0066] The image displayed by the controller 200 is not limited to
the above-described FIGS. 12 to 14. Images including at least one
of the first to third images may be sequentially displayed as
needed, and the first to third images may be simultaneously
displayed.
[0067] FIG. 15 is a block diagram showing the configuration of a
vehicle lamp according to another exemplary embodiment of the
present disclosure. Referring to FIG. 15, the vehicle lamp 1
according to another exemplary embodiment of the present disclosure
may include an image display 100, a controller 200, and a state
detector 300. In an example shown in FIG. 15, the vehicle lamp 1 of
the present disclosure may display a charging state of a battery
400. In the another exemplary embodiment of the present disclosure,
the same reference numerals are used for the same components as
those in the above-described exemplary embodiment, and a detailed
description thereof will be omitted.
[0068] The state detector 300 in the another exemplary embodiment
of the present disclosure may detect the charging state of the
battery 400, such as whether the battery 400 is charged or the
amount of charge of the battery 400. For example, the state
detector 300 may detect whether the battery 400 is charged by
determining whether a connector for charging the battery 400 is
electrically connected to a connector of the battery 400, and may
detect the charged amount of the battery 400 by voltage detection
of the battery 400 or the like.
[0069] In the another exemplary embodiment of the present
disclosure, the controller 200 may cause an image according to the
above order of FIGS. 12 to 14, or the like to be displayed, while
the battery 400 is being charged. In the another exemplary
embodiment of the present disclosure, the image display 100 may be
installed in head lamps 2 as shown in FIG. 16. However, the present
disclosure is not limited thereto, and the image display 100 may be
installed at various positions where the charging state of the
battery 400 may be easily checked from the outside.
[0070] FIG. 17 is a block diagram showing the configuration of a
vehicle lamp according to still another exemplary embodiment of the
present disclosure. Referring to FIG. 17, the vehicle lamp 1
according to still another exemplary embodiment of the present
disclosure may include an image display 100, a controller 200, a
status detection unit 300, and an illuminance sensor 500. In the
still another exemplary embodiment of the present disclosure, the
same reference numerals are used for the same components as those
in the above-described embodiments, and a detailed description
thereof will be omitted.
[0071] In the still another exemplary embodiment of the present
disclosure, the illuminance sensor 500 may sense the illuminance
around the vehicle, and the controller 200 may adjust the
brightness of light generated from the image display 100 based on
the illuminance transmitted from the illuminance detector 500. In
particular, the illuminance sensor 500 may transmit the average
value of the illuminance sensed for a predetermined time to the
controller 200. This is intended to reduce the effect of
temporarily increasing illuminance due to external factors.
[0072] The controller 200 may adjust the brightness of light
generated from the image display 100 based on the illuminance
around the vehicle. Therefore, when the illuminance around the
vehicle is high, it is possible to prevent the brightness of the
light generated from the image display 100 from being relatively
lowered and the visibility from deteriorating. Further, when the
illuminance around the vehicle is low, it is possible to prevent
inconveniences such as glare and the like from occurring to
proximate vehicles and pedestrians due to the relatively high
brightness of light generated from the image display 100.
[0073] The controller 200 may increase the brightness of the light
generated from the image display 100 to prevent a decrease of
visibility as the ambient illuminance of the vehicle increases. On
the contrary, the controller 200 may decrease the brightness of the
light emitted from the image display 100 to prevent glare and the
like as the ambient illuminance of the vehicle is decreased. The
illuminance sensor 500 may be disposed in a direction in which
light is emitted from the image display 100 as shown in FIG. 18.
This is for enabling the brightness to be adjusted by sensing the
illuminance in a direction in which the light generated from the
image display 100 may be recognized. In other words, when the
illuminance sensor 500 is disposed in a direction different from a
direction in which the image display 100 is installed, the
illuminance sensed by the illuminance sensor 500 may not directly
affect the recognition of the light emitted from the image display
100. Therefore, when the illuminance sensor 500 is disposed in the
direction in which the light is emitted from the image display 100,
the brightness may be more accurately adjusted.
[0074] The exemplary embodiments as described above may include the
status detection unit 300 and the illuminance sensor 500,
respectively. However, the present disclosure is not limited
thereto, and elements included in each of the above-described
exemplary embodiments may be adapted from each other.
[0075] A skilled in the art may recognize that the present
disclosure may be embodied in other specific forms without
departing from the spirit or essential characteristics thereof.
Therefore, it is to be understood that the above-described
exemplary embodiments are illustrative in all aspects and not
restrictive. The scope of the invention is indicated by the
appended claims rather than the foregoing detailed description. It
should be interpreted that the present disclosure covers the
modifications and variations derived from the meaning and scope of
the appended claims and their equivalents.
* * * * *