U.S. patent application number 11/739457 was filed with the patent office on 2007-10-25 for space saving fan with front elevation/illumination plate.
Invention is credited to WILLIAM J. LEWIS, Paul W. Orr.
Application Number | 20070248476 11/739457 |
Document ID | / |
Family ID | 38619635 |
Filed Date | 2007-10-25 |
United States Patent
Application |
20070248476 |
Kind Code |
A1 |
LEWIS; WILLIAM J. ; et
al. |
October 25, 2007 |
SPACE SAVING FAN WITH FRONT ELEVATION/ILLUMINATION PLATE
Abstract
A space saving fan for desktop use is provided. The device
includes a compact motorized impeller, a front elevation plate
and/or a light dissemination plate for improved and efficient
illumination of a room or work surface.
Inventors: |
LEWIS; WILLIAM J.; (Denver,
PA) ; Orr; Paul W.; (Coatsville, PA) |
Correspondence
Address: |
WOODCOCK WASHBURN LLP
CIRA CENTRE, 12TH FLOOR, 2929 ARCH STREET
PHILADELPHIA
PA
19104-2891
US
|
Family ID: |
38619635 |
Appl. No.: |
11/739457 |
Filed: |
April 24, 2007 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
60794643 |
Apr 24, 2006 |
|
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|
Current U.S.
Class: |
417/423.1 |
Current CPC
Class: |
F04D 29/005 20130101;
F04D 25/0613 20130101 |
Class at
Publication: |
417/423.1 |
International
Class: |
F04B 17/00 20060101
F04B017/00 |
Claims
1. A space saving fan with a front elevation plate comprising: a
front elevation plate comprising; a front surface; a rear surface;
an outer edge; an opening located within a central region of said
front elevation plate, said opening connecting said front and rear
surfaces; a width, height, and depth dimension, wherein said depth
dimension is limited to less than about 15% of either the width
dimension and/or the height dimension; an air generator disposed
within said opening and connected to said front elevation plate,
said air generator comprising; a housing; an electric motor; an air
impeller rotatably coupled to said motor, wherein rotation of said
air impeller causes air to move from a rear of said front elevation
plate to a front of said front elevation plate; an air generator
width, height, and depth dimension, wherein said air generator
depth dimension is limited to less than 50% of either the width
dimension and/or the height dimension of said front elevation;
wherein said limitation of said depth dimension of said front
elevation plate and said limitation of said depth dimension of said
air generator provide space saving characteristics for said space
saving fan.
2. The space saving fan of claim 1, wherein said front elevation
plate comprises a clear or semi-clear polymer and/or glass material
and said front elevation plate is illuminated by ambient light.
3. The space saving fan of claim 2, wherein said front elevation
plate further comprises colored tints and said illuminated front
elevation plate includes a color intensification of said outer
edge.
4. The space saving fan of claim 1, wherein one and/or both of said
front and rear surfaces of said front elevation plate further
comprises a surface treatment.
5. The space saving fan of claim 1, wherein said front elevation
plate further comprises multiple sections.
6. The space saving fan of claim 1, wherein said front elevation
plate supports said space saving fan relative to a support
surface.
7. The space saving fan of claim 1, wherein said electric motor
further comprises a direct current motor.
8. The space saving fan of claim 7, further comprising a power
supply cord comprising; conductors having a first and a second end;
a plug connected to said first end of said conductors and said
motor electrically connected to said second end of said conductors;
and a transformer disposed within said plug and/or between said
plug and said motor, said transformer converting an alternating
electric current from a power source to a direct electric
current.
9. The space saving fan of claim 1, wherein said air impeller
further comprise: a center hub; and multiple blades extending
radially outward from said hub; wherein said electric motor is
disposed substantially within said hub.
10. The portable fan of claim 1, wherein said front elevation plate
is a clear and/or semi-clear polymer and/or glass material.
11. The space saving fan of claim 10 further comprising: a light
source located proximate said opening in said front elevation
plate; wherein light generated by said light source is disseminated
through said front elevation plate.
12. The portable fan of claim 11, wherein said light source
comprises multiple light sources.
13. The portable fan of claim 11, wherein said light source
comprises one or more light emitting diodes (LEDs).
14. The portable fan of claim 11, wherein said front elevation
plate further comprises a pocket, wherein said light source is
disposed within said pocket.
15. The portable fan of claim 14, wherein said pocket has a
circular shape.
16. The portable fan of claim 11, further comprising a light
shroud, wherein said light shroud impedes a user from directly
seeing said light source.
17. The portable fan of claim 11, wherein said outer edge of said
front elevation plate is illuminated by said light generated by
said light source.
18. The portable fan of claim 17, wherein said polymer and/or glass
material further comprises colored tints and said outer edge
includes an illuminated color intensification.
19. The portable fan of claim 11, wherein one and/or both of said
front and rear surfaces of said front elevation plate further
comprises a reflective feature.
20. The portable fan of claim 11, wherein one and/or both of said
front and rear surfaces of said front elevation plate further
comprises a surface treatment.
21. The portable fan of claim 11, wherein said front elevation
plate further comprises multiple sections.
22. The portable fan of claim 11, further comprising a base
connected to said front elevation plate, wherein said base supports
said portable fan relative to a support surface.
23. The portable fan of claim 11, wherein said electric motor
further comprises a direct current motor.
24. The portable fan of claim 23, further comprising a power supply
cord comprising; conductors having a first and a second end; a plug
connected to said first end of said conductors and said motor
electrically connected to said second end of said conductors; and a
transformer disposed within said plug and/or between said plug and
said motor, said transformer converting an alternating electric
current from a power source to a direct electric current.
25. A space saving fan with a front elevation plate comprising: a
front elevation plate, said front elevation plate comprising: a
front surface; a rear surface; an outer edge; an inner edge; an
opening defined by said inner edge, said opening located in a
central region of said front elevation plate; a depth of said front
elevation plate defined by the distance between said front surface
and said rear surface; a length and a height of said front
elevation plate; an air generator disposed within said opening in
said central region of said front elevation plate, said air
generator comprising: a housing; an air inlet in said housing on a
rear of said space saving fan; an air outlet in said housing on a
front of said space saving fan; an air impeller rotatably disposed
within said housing; a motor a rotating said air impeller; a depth
of said air generator defined by the distance between said air
inlet and said air outlet; a length and a height of said air
generator; wherein said air generator moves air from a rear of said
space saving fan to a front of said space saving fan as said air
impeller rotates, wherein said front elevation plate provides a
barrier between said front of said space saving fan and said rear
of said space saving fan.
26. The space saving fan of claim 25, wherein said front elevation
plate further comprises a translucent or clear material such that
objects located behind said front elevation plate may be viewed
from in front of said space saving fan.
27. The space saving fan of claim 25, wherein said front elevation
plate further comprises a light conducting material, wherein said
front elevation plate further comprises: one or more light entrance
points located on said inner edge of said front elevation plate;
and one or more light exit points located on one or both of said
outer edge and/or said front surface.
28. The space saving fan of claim 27, further comprises: a light
collector at each of said one or more light entrance points,
wherein said light collector collects and reflects light into said
front elevation plate; and a diffuser at each of said light exit
points, wherein said diffuser spreads light from said front
elevation plate into a room in which said space saving fan in
located and/or onto a work surface on which said space saving fan
in located.
29. The space saving fan of claim 27, further comprises one or more
light sources located proximate said light entrance point(s),
wherein light rays from said one or more light sources radiate into
said front elevation plate.
30. The space saving fan of claim 29, wherein said one or more
light sources are located in said air generator housing and said
one or more light entrance points are located on said inner edge of
said front elevation plate, wherein said light entrance point(s) on
said inner edge of said front elevation plate coincides with said
light source(s) in said air generator housing.
31. The space saving fan of claim 29, wherein said one or more
light sources comprise natural light.
32. The space saving fan of claim 29, wherein said one or more
light sources comprise LEDs.
33. The space saving fan of claim 29, further comprising one or
more reflective features on said front elevation plate for
directing and distributing light from said light source to one of
said light exit points.
34. The space saving fan of claim 29, further comprising pockets
formed in said front elevation plate proximate said inner edge,
wherein said one or more light sources are located in said
pockets.
35. The space saving fan of claim 34, wherein said pockets are
located in said front elevation plate at a distance from said inner
edge such that light vectors radiated from said light source are
radiated over an angular range greater than 180 degrees.
36. The space saving fan of claim 34, wherein said pockets are
located in said front elevation plate at a distance from said inner
edge such that light vectors radiated from said light source are
radiated over an angular range greater than 270 degrees.
37. The space saving fan of claim 34, further comprising a light
shroud extending over a portion of said front elevation plate
proximate said inner edge and covering a surface of said front
elevation plate proximate said one or more light sources, wherein
said one or more light sources are blocked from direct view from in
front of said space saving fan.
38. The space saving fan of claim 34, wherein said pockets comprise
circular-shaped pockets.
39. The space saving fan of claim 27, further comprises one or more
light sources located proximate said light entrance point(s),
wherein primary light rays from said one or more light sources
radiate along a first path through said front elevation plate.
40. The space saving fan of claim 39, wherein said first path is
substantially radial.
41. The space saving fan of claim 39, further comprises secondary
light rays, wherein said secondary light rays radiate along a
second path that is at an angle with respect to said first light
path.
42. The space saving fan of claim 41, further comprises a surface
treatment that reflects all or a portion of said primary light rays
to form said secondary light rays.
43. The space saving fan of claim 42, wherein said surface
treatment comprises a reflective material on said rear surface,
wherein said secondary light rays travel along said second light
path from said rear surface toward said front surface.
44. The space saving fan of claim 41, wherein said second light
path is substantially orthogonal to said rear surface.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This Application claims the benefit of Application No.
60/794,643, filed Apr. 24, 2006, the entirety of which is
incorporated herein by reference.
TECHNOLOGY FIELD
[0002] This invention relates generally to portable desk top fans.
More particularly, the present invention relates to a structure for
a fan that will enhance and improve work area function and not be
detracting to persons working in the vicinity of the fan
BACKGROUND
[0003] The need to cool a human when sitting at a work area, such
as for example a desk, table or work bench, has been long
established. Industry has responded to this need with the use of
small fans and cooling devices. The conventional devices may indeed
permit some relief, however they have several shortcomings.
[0004] One such shortcoming is the ability to have non-disruptive
or non-distracting apparatus within the work area. Employers are
constantly searching for methods to improve the employee work
environment. Entire industries of office furniture and appliances
have emerged in response to this need. Conventional desk fans
utilizing standard impellers, motors and protective grills can be
disruptive to the work area environment, having a net negative
effect on the employee. Conventional desk fans located in close
proximity to a user tend to be disruptive while functioning. The
structural size required to protect the rotating impeller and the
distractive rotational movement of the impeller of conventional
desk fans does not complement the work environment. Conventional
desk fans have little to commend them to the user and may
contribute to a loss in productivity.
[0005] Another disadvantage of conventional desk fans is the
excessive volume of air produced. Since such devices are located
close to the user, the excess air volume serves to disturb objects
from there intended place. For example, papers, notes and other
light objects can easily be dislodged from work surfaces. The
production of this excess volume of air also needlessly wastes
energy.
[0006] Another disadvantage of conventional desk fans that use
conventional impellers and motor configurations is the need of a
large base for stabilization. The large base often requires the
user to sacrifice a portion of work surface. A desk or table top
has a limited surface area and most of the area ideally is used for
productive gains instead of being occupied by a conventional desk
fan. Many conventional desk fans using conventional impellers and
motor configurations often require a dimensional depth and height
that tends to impair the user's ability to see the area around the
device. In addition, the required height makes these devices more
susceptible to accidental contact and tip-over. Accidental tip over
can cause time and work loss.
[0007] Conventional desk fans that are widely available in the
market have no real differentiation to attract attention in the
consumer market. This lack of differentiation not only produces a
lack of choice for the consumer but zero marketing "novelty" for
the manufacturer and/or vendor.
SUMMARY
[0008] In light of the aforementioned shortcomings there is a need
for a fan that may be presented on a desk or work area with a new
and an improved structure and space saving form. The size of the
space saving fan, as described, has been minimized to conserve the
area of a work area, such as a desk or table top. Although the size
of the space saving fan may be reduced, the structure of the device
improves the functionality and usefulness of the device.
[0009] The use of a small impeller and motor configuration further
allows the overall depth of the device to be reduced, thus
maximizing the available area on a work surface for productive use.
The physical location of the motor relative to the impeller permits
greater space saving characteristics than those found in a
conventional desk fan.
[0010] The space saving fan of the present invention may also
included features to enhance the efficiency of generating an air
flow with a velocity capable of cooling the user. The cooling
effect of air movement is proportional to the velocity of the air.
Higher velocities increase the ability of the air to impinge a
surface, such as for example, the user's skin and thus increase the
evaporative cooling effect. Ideally, the air flow velocity will be
generated in an energy efficient manner without the need to move an
excess volume of air.
[0011] The space saving fan in accordance with embodiments of the
present invention may also included a front elevation plate that is
not distracting to the user and that may permit a more attractive
and evocative presence on a desk or table top. The dimensional
structure of the front elevation plate provides space saving
characteristics to conserve the usable work area on a desk or table
top. The dimensional structure of the front elevation plate does
not obstruct the user's ability to see the area around the device.
These advantages provide a non-disruptive and non-distracting
device that promote a more efficient use of the limited surface
area on a desk or table top.
[0012] In accordance with other embodiments of the invention, the
structure of the front elevation plate may allow the use of
indirect or low level lighting to provide additional functionality
and enhance the overall appearance of the device. The use of light
emitting diodes (LED) in conjunction with a front elevation plate
functioning as a light dissemination plate further commend the
device to the user. The use of a LED in lieu of a common
incandescent light source reduces both the heat produced and the
energy consumed by the device.
[0013] The structural and feature innovations of the invention also
achieve the goal of re-invigorated interest on the part of the user
and sale-ability on the part of the manufacturer and/or vendor.
[0014] Additional features and advantages of the invention will be
made apparent from the following detailed description of
illustrative embodiments that proceeds with reference to the
accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0015] The invention is best understood from the following detailed
description when read in connection with the accompanying drawing.
It is emphasized that, according to common practice, the various
features of the drawing are not to scale. On the contrary, the
dimensions of the various features are arbitrarily expanded or
reduced for clarity. Included in the drawing are the following
Figures:
[0016] FIG. 1 is a perspective view of an exemplary embodiment of
the space saving fan in accordance with the present invention;
[0017] FIG. 2 is an exploded view of the space saving fan of FIG.
1;
[0018] FIG. 3A and 3B are top and side views respectively of the
embodiment of FIG. 1;
[0019] FIG. 4 is a perspective view of another exemplary embodiment
of a space saving fan in accordance with the present invention.
[0020] FIG. 5 is a perspective view of another exemplary embodiment
of a space saving fan;
[0021] FIG. 6 is a perspective view of another exemplary embodiment
of a space saving fan;
[0022] FIG. 7 is an exploded view of the space saving fan of FIG.
6;
[0023] FIG. 8 is a vertical cross section through the space saving
fan of FIG. 6;
[0024] FIG. 9A is a partial perspective view of an exemplary
embodiment of a space saving fan;
[0025] FIG. 9B is a cross section view along plane 9-9 of FIG.
9A;
[0026] FIG. 10A is a partial perspective view of another exemplary
embodiment of a space saving fan;
[0027] FIG. 10B is a cross section view along plane 10-10 of FIG.
10A;
[0028] FIG. 11A is a partial perspective view of another exemplary
embodiment of a space saving fan;
[0029] FIG. 11B is a cross section view along plane 11-11 of FIG.
11A;
[0030] FIGS. 12A and 12B are partial cross sectional views of
another exemplary embodiment of a space saving fan;
[0031] FIGS. 13A and 13B are partial cross sectional views of
another exemplary embodiment of a space saving fan; and
[0032] FIGS. 14A and 14B are partial cross sectional views of
another exemplary embodiment of a space saving fan.
DETAILED DESCRIPTION OF ILLUSTRATIVE EMBODIMENTS
[0033] FIG. 1 is a perspective view of an exemplary space saving
fan 100. Space saving fan 100 includes air generator 120, front
elevation plate 140 and support 150. As shown, air generator 120
may be located in a centralized portion of front elevation plate
140. Support 150 attaches to front elevation plate.
[0034] Front elevation plate 140 includes, outer edge 144, a rear
surface 146 and a front surface 148. Front elevation plate 140 may
be constructed of clear or translucent glass or polymer material,
such as, for example, poly carbonate. As shown, support 150 and a
bottom portion of outer edge 144 may be used to support the
structure of space saving fan 100 in an upright position.
[0035] The use of a translucent or clear material in the
construction of front elevation plate 140 contributes to the
unobtrusive appearance of space saving fan 100 when places on a
desk or other work surface. As can be appreciated, objects, such as
for example, pencil 180 can be seen through front elevation plate
140, thereby allowing the perceived size and obstructiveness of
space saving fan 100 to be minimized.
[0036] Plug 170 may be used to connect space saving fan 100 to a
power source, such as for example, a standard wall receptacle (not
shown). Power cord 172 transfers power from plug 170 to air
generator 120. As shown in FIG. 1, plug 170 may include a
transformer 174 thereby indicating the use of direct current (DC)
power by air generator 120. The transformer of plug 170 may be a
conventional wound coil type transformer or electronic switching
type transformer. The electronic switching transformer has several
advantages when compared to the wound coil transformer. The ability
to include safety features such as, for example, over current
monitoring can easily be incorporated into the design of an
electronic switching transformer. Another advantage of an
electronic switching transformer is a lower cost when compared to
the wound coil transformer. The lower cost and increased safety
augments the market appeal of space saving fan 100. It is
contemplated that direct current or alternating current could be
used to power air generator 120.
[0037] FIG. 2 is an exploded view of space saving fan 100. As
shown, air generator 120 may include housing 122, rear grill 124,
front grill 126 and motorized impeller assembly 130. When air
generator 120 is assembled, motorized impeller assembly 130 may be
disposed within cavity 123 defined by housing 122. Rear grill 124
and front grill 126 are shown located on the opposite ends of
cavity 123, and work in conjunction with housing 122 to safely
enclosing motorized impeller assembly 130. Rear grill 124 and front
grill 126 may be fastened to housing 122 using conventional means,
such as for example, adhesives, screws, snap fits and the like. It
is also contemplated that one or both of rear grill 124 and front
grill 126 may be partially or completely unitary with another
component of space saving fan 100, such as for example, housing 122
or front elevation plate 140.
[0038] Although not shown, it is contemplated that switches, wires,
power cords, batteries, and other such well known electrical
devices will be utilized to supply and control the energy required
for motorized impeller assembly 130.
[0039] Front elevation plate 140 includes opening 142, internal
edge 143, outer edge 144, rear surface 146 and front surface 148.
Air generator 120 may be disposed in opening 142 of front elevation
plate 140 upon assembly. Air generator 120 may be attached to front
elevation plate 140 using conventional means, such as for example,
adhesives, screws, snap fits and the like. It is also contemplated
that front elevation plate 140 may be partially or completely
unitary with another component of space saving fan 100, such as for
example, housing 122.
[0040] As shown support 150 may be attached to rear surface 146 of
front elevation plate 140. Support 150 may be attached via
conventional means, such as for example, adhesives, screws, snap
fits and the like. It is also contemplated that support 150 may be
removably or rotatably attached to elevation plate 140 and/or may
be attached to the front surface of front elevation plate 140. As
can be appreciated, removable or rotatable attachment of support
150 to front elevation plate 140 will contribute to efficient
packaging and shipment of space saving fan 100.
[0041] FIG. 3A and 3B are top and side views respectively of the
embodiment of space saving fan 100 of FIG. 1. Front elevation plate
140 supports air generator 120 relative to support surface 300. As
shown, front elevation plate 140 may be defined by dimensions FW,
FH and FD. FW is the horizontal width of front elevation plate 140,
FH is the vertical height of front elevation plate 140, and FD is
the thickness of front elevation plate 140. Air generator 120 may
be defined by dimensions AGW, AGH and AGD. AGW is the horizontal
width of air generator 120, AGH is the vertical height of air
generator 120, and AGD is the thickness of air generator 120. As
shown, the overall dimensions of space saving fan 100 is defined by
FW, FH and OAD. OAD is measured perpendicular to FW along a
horizontal plane.
[0042] Limiting the dimensions contribute to the space savings and
utilitarian characteristics of space saving fan 100. More
specifically, limiting the thickness FD of front elevation plate
140 increases the ability of the user to view around the device.
The limitation of thickness FD combined with the limited thickness
AGD of air generator 120 minimizes the depth of the device and
further conserves space on a desk or work surface. In one
embodiment, FD is less than 15% of either FW or FH.
[0043] Limiting the thickness FD of front elevation plate 140 in
conjunction with the use of clear or translucent glass or polymer
materials increases the ability to view object behind the front
elevation plate 140 and hence the non-distracting value of
elevation plate 140 (e.g., allowing the full work surface to be
viewed). The ability of front elevation plate 140 to collect,
reflect, defuse and/or refracting ambient light is enhanced by the
limited dimension for thickness FD. Preferably, ambient light may
easily able to penetrate thickness FD of front elevation plate 140.
The full penetration of ambient light into front elevation plate
140 increases the illumination that the ambient light is able to
effect on front elevation plate 140. Further enhancements can be
achieved with the inclusion of pale tints within the clear or
translucent material. The addition of tints provides an edge glow
effect with subtle color intensification at edge 144. The subtle
color intensification may provide a radiant glow at edge 144. These
light dissemination features differentiate space saving fan 100
from conventional space saving fans and increase the
non-distracting value of space saving fan 100 when compared to
conventional desk fans.
[0044] Although shown in a specific profile, front elevation plate
140 is not so limited. It is contemplated that front elevation
plate 140 may have a variety of shapes, for example, polygonal,
elliptical, free form and the like, without departing from the
spirit of the invention. It is also contemplated that outer edge
144 of front elevation plate 140 may have various surfaces textures
and finishes, such as for example, serrations, waves, bevels,
angles and the like.
[0045] FIG. 4 is a perspective view of another exemplary space
saving fan 400. As shown, space saving fan 400 includes air
generator 420, front elevation plate 440 and support 450. Space
saving fan 400 may be similar in other respects to space saving fan
100 of FIG. 1, except that front elevation plate 440 may be
constructed of multiple sections 440a and 440b. Although the
exemplary embodiment of front elevation plate 440 shown in FIG. 4
includes two sections 440a and 440b, the invention is not so
limited. It is contemplated that front elevation plate 440 may be
constructed of any number of sections in various shapes and sizes
without departing from the spirit of the invention.
[0046] FIG. 5 is a perspective view of another exemplary space
saving fan 500. As shown, space saving fan 500 includes air
generator 520, front elevation plate 540 and support 550. Space
saving fan 500 is similar in other respects to space saving fan 100
of FIG. 1, except that front elevation plate 540 may include an
alternative shape, for example, triangular. Support 550 may be
constructed to have similar characteristics as front elevation
plate 540.
[0047] FIG. 6 is a perspective view of another exemplary space
saving fan 600. Space saving fan 600 includes air generator 620,
light dissemination plate 640 and support 650. As shown in the
exemplary embodiment light dissemination plate 640 is similar to
front elevation plate 140 of FIG. 1, however light dissemination
plate 640 is capable of emitting a low intensity light utilizing
one or more light sources 628 as shown in FIG. 7. As shown, air
generator 620 is preferably located in a centralized portion of
light dissemination plate 640. Support 650 may attach to light
dissemination plate and support the entire structure of space
saving fan 600 in an upright position.
[0048] FIG. 7 is an exploded view of space saving fan 600 from FIG.
6. As shown, air generator 620 includes housing 622, rear grill
624, front grill 626, one or more light sources 628 and motorized
impeller assembly 630. When air generator 620 is assembled
motorized impeller assembly 630 is disposed within cavity 623
defined by housing 622. Rear grill 624 and front grill 626 may be
located on the opposite ends of cavity 623, and in combination with
housing 622 safely enclose motorized impeller assembly 630. Rear
grill 624 and front grill 626 may be fastened to housing 622 using
conventional means, such as for example, adhesives, screws, snap
fits and the like. It is also contemplated that one or both of rear
grill 624 and front grill 626 may be partially or completely
unitary with another component of space saving fan 600, such as for
example, housing 622.
[0049] As shown, light sources 628 may be disposed within pockets
629 and located near outside surface 625 of housing 622. As shown,
the location of light sources 628 and pockets 629 coincide with
internal edge 643 of light dissemination plate 640 when space
saving fan 600 is completely assembled. The exemplary embodiment
shows four light sources 628, the invention however is not so
limited. It is contemplated that one or multiple light sources 628
may be used without departing from the invention.
[0050] It is contemplated that light sources 628 may be miniature
lights, neon lights, light emitting diodes (LEDs) and the like. In
a preferred embodiment, light source 628 uses LED technology. The
use of LED technology has several advantages. First, the power
usage is low compared to other types of light sources. Also, the
life span of an LED is much greater than other light sources. In
addition, the construction of the LED is simple when compared to
with other conventional lighting technologies, such as for example,
incandescent lights that require several components, such as,
sockets. Further, the use of LEDs for light sources 628 in
conjunction with light dissemination plate 640 creates a compact
light emission structure that can easily be crafted into many
shapes and sizes.
[0051] Although not shown it is contemplated that switches, wires,
power cords, batteries, and other such well known electrical
devices will be utilized to supply and control the energy required
for both motorized impeller assembly 630 and light sources 628.
Preferably, these electrical components are located safely behind
light dissemination plate 640.
[0052] Air generator 620 may be disposed in opening 642 of light
dissemination plate 640 upon assembly. As noted before, light
sources 628 should align with internal edge 643 of light
dissemination plate 640.
[0053] As shown, light dissemination plate 640 includes opening
642, internal edge 643, outer edge 644, rear surface 646 and front
surface 648. Light dissemination plate 640 is preferably a good
conductor of light. Preferably, light dissemination plate 640 is
constructed of glass or a clear polymer material such as poly
carbonate. Air generator 620 may be attached to light dissemination
plate 640 using conventional means, such as for example, adhesives,
screws, snap fits and the like. It is also contemplated that light
dissemination plate 640 may be partially or completely unitary with
another component of space saving fan 600, such as for example,
housing 622.
[0054] As shown in FIG. 7, light dissemination plate 640 may attach
to support 650 via notches 652. As shown outer edge 644 of light
dissemination plate 640 will fit within notches 652. In a preferred
embodiment, light dissemination plate 640 may be removably attached
to support 650. It is also contemplated that light dissemination
plate 640 may be permanently attached to support 650 using
conventional means, such as for example, adhesives, screws, snap
fits and the like.
[0055] Although shown as circular in form, light dissemination
plate 640 is not so limited. It is contemplated that light
dissemination plate 640 may have a variety of shapes, for example,
polygonal, elliptical, free form and the like without departing
from the spirit of the invention. It is also contemplated that
outer edge 644 of light dissemination plate 640 may have various
surfaces textures and finishes, such as for example, serrations,
waves, bevels, angles and the like.
[0056] FIG. 8 is a vertical cross section through space saving fan
600. As shown, motorized impeller assembly 630 includes impeller
631, stator 632, rotor 633, shaft pin 634, stationary frame 635 and
bearings 636. As shown, motorized impeller assembly 630 utilizes
A.C. motor technology including stator coils 632a, stator
lamination 632b, rotor inductor 633a and rotor laminations 633.
Although space saving fan 600 is shown using A.C. motor technology
the invention is not so limited. It is contemplated that D.C.
motors, permanent magnet motors and other conventional motor types
could be used without departing from the spirit of the
invention.
[0057] Impeller 631 may be attached to rotor 633 using shaft pin
634. As shown impeller 631 includes hub 631a and blades 631b.
Bearings 636 may be attached to stationary frame 635, which in turn
may be fixedly attached to front grill 626. Shaft pin 634 may be
rotatably disposed through bearings 636 allowing impeller 631,
rotor 633 and shaft pin 634 to rotate relative to bearings 636,
stationary frame 635 and the rest of the components of space saving
fan 600.
[0058] When electrical power is supplied to stator coils 632a,
rotor 633 rotates thereby rotating impeller 631. The rotation of
impeller 631 generates air flow 800. As shown, air flow 800 enters
housing 622 through rear grill 624, is accelerated by impeller 631,
and exits space saving fan 600 via front grill 626. In a preferred
embodiment, light dissemination plate 640 may be mounted at an
angle a relative to support 650. Inclination of air stream 800
relative support surface 802 helps avoid or reduce disturbance of
objects resting on support surface 802. It is also contemplated
that the incline of air stream 800 may be adjustable relative to
support surface 802.
[0059] In the present exemplary embodiment, stationary frame 635 is
attached to front grill 626 with fasteners 660. It is also
contemplated that other conventional means, such as for example,
adhesives, snap fits and the like may be used. It is also
considered that stationary frame 635 may be partially or completely
unitary with another component of space saving fan 600, such as for
example, rear grill 624 or front grill 626.
[0060] The location of stator 632, rotor 633, shaft pin 634,
stationary frame 635 and bearings 636 within hub 631a of impeller
631, permits a conservation of size for motorized impeller assembly
630. This further contributes to the space saving characteristics
of space saving fan 600. As can be appreciated, the diameter and or
size of light dissemination plate 640 is greater than the axial
thickness of air generator 620. In one embodiment, the ratio of the
diameter light dissemination plate 640 to the axial thickness of
air generator 620 is greater than 2 to 1.
[0061] Although not shown, it is contemplated that space saving fan
600 may also include additional features, such as for example, air
filtration, heaters, clocks, oscillation, storage compartments and
the like. It is also contemplated that support 650 may be an
elevating structure, such as for example, a pedestal to increase
the elevation of air flow 800 produced by air generator 620 above
support surface 802.
[0062] FIG. 9A is a partial perspective view of an embodiment of
space saving fan 600. FIG. 9B is a view of a cross section cut
through the partial perspective view of FIG. 9A along plane 9-9. As
shown, light vector 900 may be the predominant direction of travel
of light through light dissemination plate 640.
[0063] As shown in FIGS. 7, 9A and 9B, light sources 628 may be
located near internal edge 643 of light dissemination plate 640.
The majority of the light may be maintained between rear surface
646 and front surface 648 and travels in an outward or radial
direction between rear surface 646 and front surface 648. In a
preferred embodiment, rear surface 646 and front surface 648 are
flat and smooth and the angle of incidence of the light is high
relative to rear surface 646 and front surface 648, thereby
reflecting the majority of light vector 900 along a radial path
from internal edge 643 towards outer edge 644.
[0064] The angle of incidence is the angle between a light beam
incident on a surface and the line perpendicular to the surface at
the point of incidence. The optical phenomenon, internal reflection
will occur within light dissemination plate 640 as light vector 900
strikes rear surface 646 and front surface 648 at an angle of
incidence greater that the critical angel. The critical angle is
the angle of incidence above which the internal reflection occurs.
This phenomenon of reflectivity and angle of incidence is widely
known and described from Fresnel's equations.
[0065] In another embodiment, rear surface 646 and front surface
648 may be coating with a reflective material. Reflective materials
may further enhance the light transport and guide characteristics
of the light dissemination plate 640.
[0066] As shown in FIG. 9B, light vector 900 may exit light
dissemination plate 640 through outer edge 644 due to the high
angle of incidence between light vector 900 and outer edge 644. It
is contemplated that outer edge 644 may have a textured surface,
thereby diffusing the light as it exits light dissemination plate
640 giving a glowing appearance to outer edge 644.
[0067] Other light exit points may be provided on, for example, the
front surface 648 of the light dissemination plate 640. These
points of use may include a diffuser for spreading and/or directing
the light into the room and/or onto the work surface.
[0068] FIG. 10A is a partial perspective view of another embodiment
of space saving fan 600. FIG. 10B is a view of a cross section cut
through the partial perspective view of FIG. 10A along plane 10-10.
As shown, light vector 900 may be the predominant direction of
travel of light through light dissemination plate 1040. FIGS. 10A
and 10B include an additional surface treatment 1000 on rear
surface 646. Surface treatment 1000 may include the texturizing of
rear surface 646, paint, and/or an additional surface attached to
rear surface 646. For example, a paint containing reflective glass
beads, an adhesive material with reflective properties, mirrors,
and the like could be used as surface treatment 1000.
[0069] Although the majority of light vector 900 may exit light
dissemination plate 1040 through outer edge 644, a portion of
light, shown as reflected vectors 1002, may be directed at an angle
.theta. to rear surface 646 and cause rear surface 646 to be
visible through front surface 648. As shown, the reflected vectors
1002 may be directed substantially perpendicular to rear surface
646. The reflectivity of rear surface 646 may be increased or
decreased with various surface treatments 1000 including the amount
of texturization, type of texturization and the quantity and size
of glass beads in the paint or adhesive material, etc.
[0070] FIG. 11A is a partial perspective view of another embodiment
of space saving fan 600. FIG. 11B is a view of a cross section cut
through the partial perspective view of FIG. 11A along plane 11-11.
As shown, light vector 900 may be the predominant direction of
travel of light through light dissemination plate 1140.
[0071] FIGS. 11A and 11B, include an additional reflective feature
1100 on rear surface 646. Reflective feature 1100 may include
numbers, letters, symbols and various graphics recessed into light
dissemination plate 1140 on rear surface 646. Further, the surface
of reflective feature 1100 may be texturized or the recess may
contain a filler 1104, such as for example, a paint or epoxy
containing reflective glass beads, mirrors, and the like.
[0072] Although as shown the majority of light vector 900 may exit
light dissemination plate 1140 through outer edge 644, a portion of
light, shown as reflected vectors 1102, may be directed at an angle
.theta. to rear surface 646 by reflective feature 1100 and thus
causing reflective feature 1100 to be visible through front surface
648. As shown, reflected vectors 1102 may be directed substantially
perpendicular to rear surface 646 by reflective feature 1100. The
visibility of reflective feature 1100 may be increased or decreased
with various types of texturization and the amount of glass beads
in filler 1104, the intensity of the light source, etc. It is also
contemplated that colors may be added to reflective feature 1100 to
convey different moods and contribute to its aesthetic appeal.
[0073] In the exemplary embodiment of FIGS. 11A and 11B, reflective
feature 1100 is shown as a single entity. It is contemplated that
multiple reflective features 1100 may be used on light
dissemination plate 1140 without departing from the spirit of the
invention. Multiple reflective features 1100 may be used to direct
and distribute light and also create an aesthetic design that will
further contribute to the consumer appeal of space saving fan
600.
[0074] FIGS. 12A and 12B are partial cross sections of yet another
embodiment of space saving fan 600. Similar to the embodiment shown
in FIG. 7, light source 628 may be disposed within one or more
pockets 629 located on outside surface 625 of housing 622. As
shown, light vectors 900 radiate from light source 628 along a
straight trajectory through light dissemination plate 640. As can
be seen, the location of light source 628 within pocket 629 may
limit the angular range through which light vectors 900 are able to
radiate. As shown, the angular range may be defined by angle
.alpha.1. The limited range of angle .alpha.1 may create
non-lighted areas 1204 and 1206 on either side of angle .alpha.1.
Non-lighted areas 1204 and 1206 create a non-uniform light pattern
consisting of bright and dim areas throughout light dissemination
plate 640.
[0075] FIGS. 13A and 13B are partial cross sections of another
embodiment of space saving fan 600. As shown, light source 628 may
be disposed within pocket 1329. Pocket 1329 may be located
proximate internal edge 643 within light dissemination plate 640.
As shown, light vectors 900 radiate from light source 628 along a
straight trajectory through light dissemination plate 640. As can
be seen, the location of light source 628 within pocket 1329
increases the angular range through which light vectors 900 are
able to radiate when compared to FIGS. 12A and 12B. As shown, the
angular range may be defined by angle .alpha.2. The increased range
of angle .alpha.2 eliminates/reduces non-lighted areas 1204 and
1206 that are shown in FIGS. 12A and 12B.
[0076] Referring again to FIGS. 13A and 13B, light shrouds 1310 are
shown adjacent rear surface 646 and front surface 648 of light
dissemination plate 640. Light shroud 1310 may be utilized to block
a direct view of light source 628 by the user of space saving fan
600. As shown, outer edge 1312 of light shroud 1310 extends
radially outward and beyond light source 628 thereby effectively
shielding the full intensity of light source 628 from view.
[0077] Although shown as circular or arcuate in form, light shroud
1310 is not so limited. It is contemplated that light shroud 1310
may have a variety of shapes, for example, polygonal, elliptical,
free form and the like without departing from the spirit of the
invention. It is also contemplated that outer edge 1312 of light
shroud 1310 may have various surfaces textures and finishes, such
as for example, serrations, waves, bevels, angles and the like.
[0078] In one embodiment angle al of FIG. 12A and/or angle .alpha.2
of FIG. 13A is greater than about 180.degree. . In another
embodiment angle .alpha.1 of FIG. 12A and/or angle .alpha.2 of FIG.
13A is between about 140.degree. and about 270.degree..
[0079] The location of light source 628 as shown and described in
FIGS. 13A and 13B has advantages over the location of light source
628 as shown and described in FIGS. 12A and 12B. For example, the
increased range of angle .alpha.2 permits a more uniform light
distribution throughout light dissemination plate 640. When
compared to the embodiment of FIGS. 12A and 12B, the embodiment of
FIGS. 13A and 13B would require fewer light sources 628 around
internal edge 643 of light dissemination plate 640 to achieve
complete illumination of light dissemination plate 640. This
reduces both the assembly and material costs associated with space
saving fan 600.
[0080] Another advantage of the use of light shrouds 1310 as
described in FIGS. 13A and 13B is the ability to utilize a
reflective surface on light shrouds 1310 in the areas of interface
between light shrouds 1310 and rear surface 646 and/or front
surface 648 of light dissemination plate 640. The use of reflective
surfaces helps preserves the intensity of light vectors 900 thereby
increasing/improving the illumination of light dissemination plate
640. The increased/improved illumination may permit the use of
lower power light sources 628, thereby conserving energy and
expense.
[0081] FIGS. 14A and 14B are partial cross sections of another
embodiment of space saving fan 600. FIGS. 14A and 14B are similar
to FIGS. 13A and 13B in other respects except for the configuration
of pocket 1429. As shown, pocket 1429 may be circular in form and
substantially larger than the size of light source 628. It has been
found that the circular form of pocket 1429 and a comparatively
larger size with respect to the size of light source 628 increases
the angular range through which light vectors 900 are able to
radiate. As shown, the angular range of radiation of light vectors
900 is about 360.degree.. It has also been found that this
configuration of light source 628 and pocket 1429 creates a more
homogeneous light radiation throughout light dissemination plate
640 when compared to FIGS. 12A and 12B and/or FIGS. 13A and
13B.
[0082] Further, internal edge 643 and/or outside surface 625 of
housing 622 may include a reflective material. Light vectors
radiating toward this reflective material may be reflected back
into the light dissemination plate 640. This feature further
improves light radiation throughout light dissemination plate
640.
[0083] In one embodiment the diameter of pocket 1429 is greater
than about 2 times the cross sectional width of light source 628.
In another embodiment, the diameter of pocket 1429 is greater than
about 0.30 inches. In yet another embodiment the diameter of pocket
1429 is between about 0.25 inches and about 0.75 inches.
[0084] The features and structure of space saving fan 100 and 600,
as described in the exemplary embodiments, enhance space saving
characteristics when compared to conventional desk and table fans.
The physical location of the motor relative to the impeller permits
greater space saving characteristics than those found in a
conventional desk fan. The use of motorized impeller assembly 630
having the motor disposed substantially within hub 631 a allows
further size economization, thus maximizing the available area on a
table or desk for productive use. The use of front elevation plate
140 captures indirect lighting to enhance the overall appearance of
space saving fan 100. Light dissemination plate 640 in conjunction
with light sources 628 is capable of emitting a low level light for
use on a desk. Additionally the use of front elevation plate 140
and/or light dissemination plate 640 serves to protect and isolate
electrical components from direct contact by the user.
[0085] As can be appreciated the use of front elevation plate 140
and/or light dissemination plate 640 further distinguish space
saving fans 100 and 600 from conventional desk top fans.
Embodiments of space saving fans 100 and 600 have features that
allow for a more functional, attractive and evocative presence on a
desk or table top. The structural and feature innovation of space
saving fan 100 and 600 also achieve the goal of re-invigorated
interest on the part of the user and sale-ability on the part of
the manufacturer and/or vendor.
[0086] Although the invention has been described with reference to
exemplary embodiments, it is not limited thereto. Rather, the
appended claims should be construed to include other variants and
embodiments of the invention, which may be made by those skilled in
the art without departing from the true spirit and scope of the
present invention.
* * * * *