U.S. patent application number 12/686539 was filed with the patent office on 2011-07-14 for heat-dissipating system for led signboard.
Invention is credited to Ching-Hang Shen.
Application Number | 20110168357 12/686539 |
Document ID | / |
Family ID | 44257610 |
Filed Date | 2011-07-14 |
United States Patent
Application |
20110168357 |
Kind Code |
A1 |
Shen; Ching-Hang |
July 14, 2011 |
HEAT-DISSIPATING SYSTEM FOR LED SIGNBOARD
Abstract
A heat-dissipating system for LED signboard includes a frame and
at least one first heat-dissipating module. The frame has at least
one heat-dissipating part and a LED module. The heat-dissipating
part is connected to the LED module. The first heat-dissipating
module has at least one heat pipe assembly connected to the
heat-dissipating part and the frame for conducting the heat
absorbed by the heat-dissipating part to the frame for heat
dissipation. With the design of the first heat-dissipating module,
the heat can be rapidly conducted to the frame for heat
dissipation, thereby increasing the heat-dissipating area and
improving the thermal-conducting efficiency. Thus, an excellent
heat-dissipating effect can be achieved.
Inventors: |
Shen; Ching-Hang; (Sinjhuang
City, TW) |
Family ID: |
44257610 |
Appl. No.: |
12/686539 |
Filed: |
January 13, 2010 |
Current U.S.
Class: |
165/104.26 ;
165/104.34; 165/121; 165/185 |
Current CPC
Class: |
F28D 15/0275
20130101 |
Class at
Publication: |
165/104.26 ;
165/185; 165/104.34; 165/121 |
International
Class: |
F28D 15/02 20060101
F28D015/02; F28F 7/00 20060101 F28F007/00; F28D 15/00 20060101
F28D015/00 |
Claims
1. A heat-dissipating system for LED signboard, including: a frame
having at least one heat-dissipating part and a LED module, the
heat-dissipating part being connected to the LED module; and at
least one first heat-dissipating module having at least one heat
pipe assembly connected to the heat-dissipating part and the frame,
the heat absorbed by the heat-dissipating part being conducted to
the frame for heat dissipation.
2. The heat-dissipating system for LED signboard according to claim
1, wherein the frame has a mounting surface and a display surface,
the display surface is in flush with an end surface of the LED
module opposite to the heat-dissipating part, the mounting surface
corresponds to the display surface and both of them define an
accommodating space, the frame, the LED module and the first
heat-dissipating module are received in the accommodating
space.
3. The heat-dissipating system for LED signboard according to claim
1, wherein the heat-dissipating part is a copper heat-dissipating
piece, the copper heat-dissipating piece has a first end surface
tightly contacting the LED module and a second end surface
connected to the heat pipe assembly.
4. The heat-dissipating system for LED signboard according to claim
3, wherein the heat pipe assembly has a plurality of heat pipes,
each of the heat pipes has a heat-absorbing end and a
heat-dissipating end, the heat-absorbing end is connected to the
second end surface opposite to the copper heat-dissipating piece,
the heat-dissipating end extends away from the heat-absorbing end
to connect to the frame.
5. The heat-dissipating system for LED signboard according to claim
2, wherein the frame comprises a first heat-diffusing portion, a
second heat-diffusing portion, a third heat-diffusing portion, and
a fourth heat-diffusing portion, both ends of the first
heat-diffusing portion are connected to one end of the second
heat-diffusing portion and one end of the fourth heat-diffusing
portion respectively, both ends of the third heat-diffusing portion
are connected to the other end of the second heat-diffusing portion
and the other end of the fourth heat-diffusing portion
respectively, these four heat-diffusing portions are connected to
each other and surround the accommodating space.
6. The heat-dissipating system for LED signboard according to claim
4, wherein the heat-dissipating part further has a plurality of
heat-dissipating fins provided on an end surface of the copper
heat-dissipating part opposite to the LED module, the
heat-absorbing end of the heat pipe penetrates the copper
heat-dissipating piece to transfer the heat absorbed by the
heat-absorbing end to the heat-dissipating fins of the copper
heat-dissipating piece and the heat-dissipating end for heat
dissipation.
7. The heat-dissipating system for LED signboard according to claim
1, wherein the heat pipe assembly is connected to at least one
second heat-dissipating module, the second heat-dissipating module
has a plurality of heat-dissipating fins and a fan, the fan is
provided on one side opposite to the heat-dissipating fins, a front
section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and penetrates any side of the frame to connect the
heat-dissipating fins of the second heat-dissipating module.
8. The heat-dissipating system for LED signboard according to claim
2, wherein the heat pipe assembly is connected to at least one
second heat-dissipating module, the second heat-dissipating module
has a plurality of heat-dissipating fins and a fan, the fan is
provided on one side opposite to the heat-dissipating fins, a front
section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and penetrates any side of the frame to connect the
heat-dissipating fins of the second heat-dissipating module.
9. The heat-dissipating system for LED signboard according to claim
3, wherein the heat pipe assembly is connected to at least one
second heat-dissipating module, the second heat-dissipating module
has a plurality of heat-dissipating fins and a fan, the fan is
provided on one side opposite to the heat-dissipating fins, a front
section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and penetrates any side of the frame to connect the
heat-dissipating fins of the second heat-dissipating module.
10. The heat-dissipating system for LED signboard according to
claim 4, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and penetrates any side of the frame to connect the
heat-dissipating fins of the second heat-dissipating module.
11. The heat-dissipating system for LED signboard according to
claim 5, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and penetrates any side of the frame to connect the
heat-dissipating fins of the second heat-dissipating module.
12. The heat-dissipating system for LED signboard according to
claim 6, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and penetrates any side of the frame to connect the
heat-dissipating fins of the second heat-dissipating module.
13. The heat-dissipating system for LED signboard according to
claim 1, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and extends away from the frame to penetrate the
heat-dissipating fins of the second heat-dissipating module.
14. The heat-dissipating system for LED signboard according to
claim 2, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and extends away from the frame to penetrate the
heat-dissipating fins of the second heat-dissipating module.
15. The heat-dissipating system for LED signboard according to
claim 3, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and extends away from the frame to penetrate the
heat-dissipating fins of the second heat-dissipating module.
16. The heat-dissipating system for LED signboard according to
claim 4, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and extends away from the frame to penetrate the
heat-dissipating fins of the second heat-dissipating module.
17. The heat-dissipating system for LED signboard according to
claim 5, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and extends away from the frame to penetrate the
heat-dissipating fins of the second heat-dissipating module.
18. The heat-dissipating system for LED signboard according to
claim 6, wherein the heat pipe assembly is connected to at least
one second heat-dissipating module, the second heat-dissipating
module has a plurality of heat-dissipating fins and a fan, the fan
is provided on one side opposite to the heat-dissipating fins, a
front section of each of the heat pipe assembly is connected to the
heat-dissipating part, and its rear section is connected to the
frame and extends away from the frame to penetrate the
heat-dissipating fins of the second heat-dissipating module.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Field of the Invention
[0002] The present invention relates to a LED signboard, and in
particular to a heat-dissipating system for LED signboard, in which
a first heat-dissipating module can rapidly conduct the heat
generated by LED modules to a frame for heat dissipation. With this
arrangement, not only the heat-dissipating area and the
thermal-conducting efficiency are increased, but also a better
heat-dissipating effect can be achieved.
[0003] 2. Description of Prior Art
[0004] With the keen competition of the commercial market,
signboards play an important role, so that many enterprises and
companies use signboards to advertise their business policy and
vision. It goes without saying that striking and glaring signboards
attract more people's attention, and thus they can generate a more
efficient and impressive effect. Therefore, many manufacturers
attempt to design novel signboards.
[0005] Among all advertising medium, LED (light-emitting diodes)
signboards can generate an excellent advertising effect. Since the
LED signboard utilizes a dynamic picture instead of stationary
patterns, the LED signboard exhibits more elasticity and
changeability. Thus, the visual effect generated by the LED
signboard has already exceeded all other advertising medium.
[0006] However, when the conventional LED signboard plays an
advertisement for a long period of time, a plurality of LED modules
in the LED signboard emits light and generates a huge amount of
heat. If the heat is accumulated in the LED signboard without
dissipating immediately, the brightness of the light emitted by the
LED modules may become inconsistent. Even, the LED modules may
suffer damage or break down, which makes the advertisement to be
played intermittently and affects the advertising effect.
[0007] As a result, in order to keep the normal operation of the
LED signboard for a long period of time, repairers have to watch
the LED signboard periodically. This not only increase the labor
cost, but also the life of the LED modules is shortened by the
accumulated heat.
[0008] According to the above, the conventional LED signboard has
problems of (1) poor heat-dissipating effect, (2) reduced life, (3)
increased labor, and (4) inconsistent brightness.
[0009] In view of the above, it is an important issue for the
present inventor and the manufacturers in this art to solve the
problems in prior art.
SUMMARY OF THE INVENTION
[0010] In order to solve the above problems, an objective of the
present invention is to provide a heat-dissipating system for LED
signboard, in which a first heat-dissipating module rapidly
conducts the heat generated by a plurality of LED modules to a
frame for heat dissipation, thereby achieving a better
heat-dissipating efficiency.
[0011] Another objective of the present invention is to provide a
heat-dissipating system for LED signboard, in which a first
heat-dissipating module conducts the absorbed heat to a second
heat-dissipating module for heat dissipation, thereby achieving an
excellent heat-dissipating efficiency.
[0012] Another objective of the present invention is to provide a
heat-dissipating system for LED signboard with an increased
heat-dissipating area.
[0013] Another objective of the present invention is to provide a
heat-dissipating system for LED signboard with an increased
thermal-conducting efficiency.
[0014] Another objective of the present invention is to provide a
heat-dissipating system for LED signboard with an increased
life.
[0015] Another objective of the present invention is to provide a
heat-dissipating system for LED signboard capable of maintaining a
stable brightness of the LED modules.
[0016] In order to achieve the above objectives, the present
invention is to provide a heat-dissipating system for LED
signboard, which includes a frame and at least one first
heat-dissipating module, the frame having at least one
heat-dissipating part and a LED module. The heat-dissipating part
is a heat-dissipating piece made of copper or aluminum and is
connected to the LED module. The first heat-dissipating module has
at least one heat pipe assembly connected to the heat-dissipating
part and the frame. The heat absorbed by the heat-dissipating part
is rapidly conducted by the heat pipe assembly to the frame for
heat dissipation. Thus, the heat generated by the LED module can be
rapidly dissipated by the first heat-dissipating module to the
frame for the heat dissipation. Thus, the thermal-conducting
efficiency can be improved, and a better heat-dissipating effect
can be achieved.
BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. 1 is an exploded perspective view showing a preferred
embodiment of the present invention;
[0018] FIG. 2 is an assembled perspective view showing the
preferred embodiment of the present invention;
[0019] FIG. 3 is a front perspective view showing the preferred
embodiment of the present invention;
[0020] FIG. 4 is an exploded perspective view showing a first
aspect of another preferred embodiment of the present
invention;
[0021] FIG. 5 is an assembled perspective view showing the first
aspect of another preferred embodiment of the present
invention;
[0022] FIG. 6 is a front perspective view showing the first aspect
of another preferred embodiment of the present invention;
[0023] FIG. 7 is an exploded perspective view showing a second
aspect of another preferred embodiment of the present
invention;
[0024] FIG. 8 is an assembled perspective view showing the second
aspect of another preferred embodiment of the present
invention;
[0025] FIG. 9 is a front perspective view showing the second aspect
of another preferred embodiment of the present invention;
[0026] FIG. 10 is an exploded perspective view showing a further
preferred embodiment of the present invention;
[0027] FIG. 11 is an assembled perspective view showing the further
preferred embodiment of the present invention;
[0028] FIG. 12 is an exploded perspective view showing a first
aspect of a further preferred embodiment of the present
invention;
[0029] FIG. 13 is an assembled perspective view showing the first
aspect of the further preferred embodiment of the present
invention;
[0030] FIG. 14 is an exploded perspective view showing a second
aspect of a further preferred embodiment of the present invention;
and
[0031] FIG. 15 is an assembled perspective view showing the second
aspect of the further preferred embodiment of the present
invention.
DETAILED DESCRIPTION OF THE INVENTION
[0032] The above-mentioned objectives, structural and functional
characteristics of the present invention will be described with
reference to the following preferred embodiments and the
accompanying drawings.
[0033] Please refer to FIGS. 1 to 3. The present invention provides
a heat-dissipating system for LED signboard. According to a
preferred embodiment of the present invention, the heat-dissipating
system for LED signboard includes a frame 1 and at least one
heat-dissipating module 3. The frame 1 has at least one
heat-dissipating part 10 and a LED (light-emitting diode) module
12. The heat-dissipating part 10 is connected to the LED module 12.
The frame 1 has a mounting surface 13 and a display surface 14. The
display surface 14 is in flush with an end surface of the LED
module 12 away from the heat-dissipating part 10. The mounting
surface 13 corresponds to the display surface 14 to together define
an accommodating space 15 in which the frame 1, the LED module 12
and the first heat-dissipating module 3 are received.
[0034] The heat-dissipating part 10 is made of metallic materials.
In the present invention, the heat-dissipating part 10 is provided
with a copper heat-dissipating piece 101 having good thermal
conductivity (or heat-absorbing property) for absorbing heat
rapidly. The copper heat-dissipating part 101 has a first end
surface 1011 and a second end surface 1012. The first end surface
10111 is brought into tight contact with the LED module 12. The
second end surface 1012 is connected to a heat pipe assembly 31 and
faces the mounting surface 13 of the frame 1.
[0035] The first heat-dissipating module 3 has at least one heat
pipe assembly 31 connected to the heat-dissipating part 10 and the
frame 1. The heat absorbed by the heat-dissipating part 10 is
rapidly conducted by the first heat-dissipating module 3 to the
frame 1 for heat dissipation. The heat pipe assembly 31 has a
plurality of heat pipes 310. The heat pipe 310 has a heat-absorbing
end 313 and a heat-dissipating end 314. The heat-absorbing end 313
is connected to the second end surface 1012 of the copper
heat-dissipating piece 101. The heat-dissipating end 314 extends
away from the heat-absorbing end 313 to connect to the frame 1, so
that the heat generated by the LED module 12 can be rapidly
conducted by the first end surface 1011 of the copper
heat-dissipating piece 101 to the second end surface 1012. Then,
the heat on the second end surface 1012 can be rapidly conducted to
the heat-dissipating end 314 by the heat-absorbing end 313 of the
heat pipe 310, so that the heat received by the heat-dissipating
end 314 can be rapidly conducted to the frame 1 for heat
dissipation.
[0036] Please refer to FIGS. 1 to 3 again. The frame 1 comprises a
first heat-diffusing portion 16, a second heat-diffusing portion
17, a third heat-diffusing portion 18, and a fourth heat-diffusing
portion 19. Both ends of the first heat-diffusing portion 16 are
connected to one end of the second heat-diffusing portion 17 and
one end of the fourth heat-diffusing portion 19 respectively. Both
ends of the third heat-diffusing portion 18 are connected to the
other end of the second heat-diffusing portion 17 and the other end
of the fourth heat-diffusing portion 19 respectively. Thus, these
heat-diffusing portions 16, 17, 18, 19 are connected to each other
to surround the accommodating space 15. In this way, the
heat-dissipating end 314 of the heat pipe 310 conducts the heat to
the frame 1, and the frame 1 transfers the heat to these
heat-diffusing portions 16, 17, 18, 19 for heat dissipation. Since
the total heat-dissipating area of these heat-diffusing portions
16, 17, 18, 19 is large, the heat generated by the LED module 12
can be dissipated rapidly.
[0037] When the LED signboard plays an advertisement for a long
period of time, the LED module 12 emits light and generates heat
continuously, so that the first end surface 1011 of the copper
heat-dissipating piece 101 absorbs the heat generated by the LED
module 12 and conducts the heat to the second end surface 1012. The
heat-absorbing end 313 of the heat pipe 310 absorbs the heat of the
second end surface 1012, and then conducts the heat to the
heat-dissipating end 314. The heat-dissipating end 314 rapidly
conducts the received heat to the heat-diffusing portions 16, 17,
18, 19 of the frame 1. The heat-diffusing portions 16, 17, 18, 19
radiate the heat to the outside and exchange the heat with external
air. In this way, the brightness of light emitted by the LED module
12 can be kept stable. Further, the thermal-conducting efficiency,
the life and the heat-dissipating area can be increased to achieve
an excellent heat-dissipating effect.
[0038] Please refer to FIGS. 4 to 9, which show another preferred
embodiment of the present invention. The whole construction and
connection between constituent elements are substantially the same
as those in the previous embodiment, so that the redundant
description is omitted for clarity. The difference between the
present embodiment and the previous embodiment lies in that the
heat pipe assembly 31 is connected to at least one second
heat-dissipating module 5. The second heat-dissipating module 5 has
a plurality of heat-dissipating fins 51 and a fan 52. The fan 52 is
provided on one side opposite to the heat-dissipating fins 51. In
the present embodiment, the connection between the second
heat-dissipating module 5 and the heat pipe assembly 31 is carried
out by two aspects, but it is not limited thereto. The connection
between the second heat-dissipating module 5 and the heat pipe
assembly 5 can be changed according to the environment in which the
LED signboard is to be mounted.
[0039] In the first aspect, the front section of each heat pipe
assembly 31 is connected to the heat-dissipating part 10, and its
rear section is connected to the frame 1 and penetrates any side of
the frame 1 to connect to the heat-dissipating fins 51 of the
second heat-dissipating module 5 (FIGS. 4, 5 and 6). That is, the
heat-absorbing end 313 of each heat pipe 310 (i.e., a portion of
the front section of the heat pipe assembly 31) is brought into
contact with the second end surface 1012 of the copper
heat-dissipating piece 101. The heat-dissipating end 314 (i.e., a
portion of the rear section of the heat pipe assembly 5) is
connected to the frame 1 and penetrates any side of the frame 1 to
connect to the heat-dissipating fins 51 of the second
heat-dissipating module 5.
[0040] In the second aspect, the front section of the heat pipe 310
of each heat pipe assembly 31 is connected to the heat-dissipating
part 10, and its rear section is connected to the frame 1 to extend
away from the frame 1 and penetrate the heat-dissipating fins 51 of
the second heat-dissipating module 5 (FIGS. 7, 8 and 9).
[0041] Please refer to FIGS. 4 to 9. The embodiments of the present
invention will be described.
[0042] When the LED signboard plays an advertisement for a long
period of time, the LED module 12 emits light and generates heat
continuously. The first end surface 1011 of the copper
heat-dissipating piece 101 conducts the heat of the LED module 12
to the second end surface 1012. The heat-absorbing end 313 of the
heat pipe 310 absorbs the heat of the second end surface 1012, and
then conducts the heat to the heat-dissipating end 314. The
heat-dissipating end 314 rapidly transfers the absorbed heat to the
first, second, third, and fourth heat-diffusing portions 16, 17,
18, 19 and the heat-dissipating fins 51 of the second
heat-dissipating module 5. The first, second, third, and fourth
heat-diffusing portions 16, 17, 18, 19 dissipate the heat to the
outside by means of radiation. The heat-dissipating fins 51 of the
second heat-dissipating module 5 not only dissipate the heat to the
outside by means of radiation, but also utilize the fan 52 to take
away the heat of the heat-dissipating fins 51. The heat-dissipating
end 314 of the heat pipe 310 conducts the heat to the
heat-dissipating fins 51 of the second heat-dissipating module 5
for heat dissipation, and conducts a portion of the heat to the
first, second, third and fourth heat-diffusing portions 16, 17, 18,
19 for heat dissipation. Therefore, the brightness of the light
emitted by the LED module 12 can be kept stable while the
thermal-conducting efficiency, the life and the heat-dissipating
area can be increased. Thus, a better heat-dissipating efficiency
can be achieved.
[0043] Please refer to FIGS. 3, 10 and 11, which show another
preferred embodiment of the present invention. The heat-dissipating
part 10 is provided with a plurality of heat-dissipating fins 102
for assisting in dissipating the heat. The heat-dissipating fins
102 are provided on the end surface of the copper heat-dissipating
piece 101 of the heat-dissipating part 10 opposite to the LED
module 12. Briefly speaking, the heat-dissipating fins 102 are
formed by extending from the second end surface 1012 of the copper
heat-dissipating piece 101 toward the mounting surface 13. The
heat-absorbing end 313 of the heat pipe 310 is connected to the
copper heat-dissipating piece 101, and transfers the heat absorbed
by the heat-absorbing end 313 to the heat-dissipating fins 102 of
the copper heat-dissipating piece 101 and the heat-dissipating end
314 for heat dissipation.
[0044] Please refer to FIGS. 6, 9, 12, 13, 14 and 15, which show a
further preferred embodiment of the present invention. The whole
structure and the connection between the constituent elements are
substantially the same as those of the previous embodiment, and
thus the redundant description is omitted for clarity. The
difference between the present embodiment and the previous
embodiment lies in that the heat pipe assembly 31 is connected to
at least one second heat-dissipating module 5. The second
heat-dissipating module 5 has a plurality of heat-dissipating fins
51 and a fan 52. The fan 52 is provided on the side opposite to the
heat-dissipating fins 51. In the present embodiment, the connection
between the second heat-dissipating module 5 and the heat pipe
assembly 31 is carried out by two aspects, but it is not limited
thereto. In practice, the connection between the second
heat-dissipating module 5 and the heat pipe assembly 31 can be
changed according to the environment in which the LED signboard is
to be mounted.
[0045] In the first aspect, the front section of each heat pipe
assembly 31 is connected to the heat-dissipating part 10, and its
rear section is connected to the frame 1 and penetrates any side of
the frame 1 to connect to the heat-dissipating fins 51 of the
second heat-dissipating module 5 (FIGS. 6, 12 and 13). That is, the
heat-absorbing end 313 of each heat pipe 310 (i.e., a portion of
the front section of the heat pipe assembly 31) is brought into
contact with the second end surface 1012 of the copper
heat-dissipating piece 101. The heat-dissipating end 314 (i.e., a
portion of the rear section of the heat pipe assembly 31) is
connected to the frame 1 and penetrates any side of the frame 1 to
connect to the heat-dissipating fins 51 of the second
heat-dissipating module 5.
[0046] In the second aspect, the front section of the heat pipe 310
of each heat pipe assembly 31 is connected to the heat-dissipating
part 10, and its rear section is connected to the frame 1 and
extends away from the frame 1 to penetrate the heat-dissipating
fins 51 on the second heat-dissipating module 5 (FIGS. 9, 14 and
15).
[0047] Please refer to FIGS. 6, 9, 12, 13, 14 and 15. The
embodiments of the present invention will be described.
[0048] When the LED signboard plays an advertisement for a long
period of time, the LED module 12 emits light and generates heat
continuously. The first end surface 1011 of the copper
heat-dissipating piece 101 conducts the heat of the LED module 12
to the second end surface 1012 and the heat-absorbing end 313 of
the heat pipe 310, so that the second end surface 1012 transfers a
portion of the heat to the heat-dissipating fins 102 thereon for
heat dissipation. The heat-absorbing end 313 of the heat pipe 310
absorbs most portion of the heat of the first end surface 1011, and
conducts the heat to the heat-dissipating end 314. The
heat-dissipating end 314 transfers most of the heat rapidly to the
first, second, third, and fourth heat-diffusing portions 16, 17,
18, 19 of the frame 1 and the heat-dissipating fins 51 of the
second heat-dissipating module 5. The first, second, third, and
fourth heat-diffusing portions 16, 17, 18, 19 dissipate the heat to
the outside by means of radiation. The heat-dissipating fins 51 of
the second heat-dissipating module 5 not only dissipate the heat to
the outside by means of radiation, but also utilize the fan 52 to
take away the heat of the heat-dissipating fins 51. The
heat-dissipating end 314 of the heat pipe 310 conducts most of the
heat to the heat-dissipating fins 51 of the second heat-dissipating
module 5 for heat dissipation, and conducts the remaining portion
of the heat to the first, second, third and fourth heat-diffusing
portions 16, 17, 18, 19 for heat dissipation. Therefore, the
brightness of the light emitted by the LED module 12 can be kept
stable while the thermal-conducting efficiency, the life and the
heat-dissipating area can be increased. Thus, a better
heat-dissipating efficiency can be achieved.
[0049] According to the above, the present invention provides a
heat-dissipating system for LED signboard and has advantages
features as follows:
[0050] (1) excellent heat-dissipating effect;
[0051] (2) increased heat-dissipating area;
[0052] (3) improved thermal-conducting efficiency;
[0053] (4) prolonged life; and
[0054] (5) stable brightness of the light emitted by the LED
module.
[0055] Although the present invention has been described with
reference to the foregoing preferred embodiments, it will be
understood that the invention is not limited to the details
thereof. Various equivalent variations and modifications can still
occur to those skilled in this art in view of the teachings of the
present invention. Thus, all such variations and equivalent
modifications are also embraced within the scope of the invention
as defined in the appended claims.
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