U.S. patent application number 13/293121 was filed with the patent office on 2013-05-16 for heat sink and fins thereof.
The applicant listed for this patent is Shyh-Ming Chen. Invention is credited to Shyh-Ming Chen.
Application Number | 20130118725 13/293121 |
Document ID | / |
Family ID | 48279510 |
Filed Date | 2013-05-16 |
United States Patent
Application |
20130118725 |
Kind Code |
A1 |
Chen; Shyh-Ming |
May 16, 2013 |
Heat Sink and Fins Thereof
Abstract
The heat sink of the invention includes a cylinder and fins
fastened thereto. A hollow in the cylinder is for receiving a heat
source. Each the fin includes two parallel wings and a connection
plate therebetween. A space is defined by the two wings and the
connection plate for air flow.
Inventors: |
Chen; Shyh-Ming; (New Taipei
City, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Chen; Shyh-Ming |
New Taipei City |
|
TW |
|
|
Family ID: |
48279510 |
Appl. No.: |
13/293121 |
Filed: |
November 10, 2011 |
Current U.S.
Class: |
165/185 |
Current CPC
Class: |
F21Y 2115/10 20160801;
F21K 9/23 20160801; F21V 29/773 20150115; F28F 1/20 20130101; F21Y
2103/33 20160801; F21V 29/83 20150115 |
Class at
Publication: |
165/185 |
International
Class: |
F28F 7/00 20060101
F28F007/00 |
Claims
1. A heat dissipation fin comprising: two parallel wings; and a
connection plate between the two wings; wherein a space is defined
by the two wings and the connection plate.
2. The heat dissipation fin of claim 1, wherein the connection
plate is formed with a through hole.
3. The heat dissipation fin of claim 1, wherein at least one of the
wings is formed with a passing hole.
4. The heat dissipation fin of claim 1, wherein tops of the wings
are separately formed with connecting portions for fastening to a
lamp head.
5. The heat dissipation fin of claim 1, wherein bottoms of the
wings are separately formed with engaging portions for fastening to
a frame.
6. The heat dissipation fin of claim 1, wherein the connection
plate has an open area.
7. The heat dissipation fin of claim 1, wherein the connection
plate is a plane in shape.
8. A heat sink comprising: a cylinder; and fins, fastened onto an
outer surface of the cylinder, each the fin comprising: two
parallel wings; and a connection plate between the two wings;
wherein a space is defined by the two wings and the connection
plate.
9. The heat sink of claim 8, wherein the connection plate is formed
with a through hole.
10. The heat sink of claim 8, wherein at least one of the wings is
formed with a passing hole.
11. The heat sink of claim 8, wherein tops of the wings are
separately formed with connecting portions for fastening to a lamp
head.
12. The heat sink of claim 8, wherein bottoms of the wings are
separately formed with engaging portions for fastening to a
frame.
13. The heat sink of claim 8, wherein the connection plate has an
open area.
14. The heat sink of claim 8, wherein the cylinder is formed with
grooves to separately engage with the fins.
15. The heat sink of claim 14, wherein inner edges of the wings are
separately engaged in the grooves.
16. The heat sink of claim 14, wherein the cylinder is formed with
guide slots, and each the guide slot is between every two adjacent
grooves.
17. The heat sink of claim 8, wherein the connection plate is a
plane in shape.
18. The heat sink of claim 8, further comprising a cover on the
cylinder.
19. The heat sink of claim 18, wherein the cover is a slice made of
plastic or metal.
Description
BACKGROUND OF THE INVENTION
[0001] 1. Technical Field
[0002] The invention relates to heat sinks, particularly to
combinative heat sinks.
[0003] 2. Related Art
[0004] Light emitting diodes (LEDs) have been replacing
conventional lighting. Because power of the LEDs becomes higher and
higher, the heat generated from the LEDs also upswings. High heat
not only makes the LEDs easy to damage, but also tends to cause
scalds. As a result, high power LEDs need heat sinks with high
efficiency of heat dissipation.
SUMMARY OF THE INVENTION
[0005] An object of the invention is to provide a heat sink and
fins thereof, which can increase heat dissipating area, enhance
efficiency of heat dissipation, reinforce the structure and improve
the extent of safety.
[0006] To accomplish the above object, the heat sink of the
invention includes a cylinder and fins fastened thereto. A hollow
in the cylinder is for receiving a heat source. Each the fin
includes two parallel wings and a connection plate therebetween. A
space is defined by the two wings and the connection plate.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a perspective view of the invention;
[0008] FIG. 2 is an exploded view of the invention;
[0009] FIG. 3 is a top view of the invention;
[0010] FIG. 4 is a schematic view showing the invention connected
with a heat source;
[0011] FIG. 5 is a sectional view of FIG. 4;
[0012] FIG. 6 shows another embodiment of the single fin of the
invention;
[0013] FIG. 7 is a perspective view of the heat sink with the fins
shown in FIG. 6; and
[0014] FIG. 8 shows still another embodiment of the invention.
DETAILED DESCRIPTION OF THE INVENTION
[0015] Please refer to FIGS. 1-3. The heat sink 10 includes a
cylinder 11 and a plurality of fins 20. An outer surface of the
cylinder 11 is formed with grooves 12 for engaging with the fins 20
and guide slots 13 between every two adjacent grooves 12 for being
pressed by a press mold (not shown) to make the grooves 12 grip the
fins 20. A hollow 14 formed in the cylinder 11 is used for receive
a heat source such as an LED module as shown in FIGS. 4 and 5. Each
of the fins 20 is composed of two parallel wings 21, 22 and a
connection plate 23 connecting therebetween. The connection plate
23 may be a plane or non-plane such as a segment or folded plate.
Inner sides of the wings 21, 22 are inserted into the grooves 12.
The grooves 12 will be deformed to grip the wings 21, 22 when the
press mold has pressed the guide slots.
[0016] Each of the wings 21, 22 of the fins 20 is provided with at
least one through hole 24 (three through holes are shown in the
figures). And the connection plate 23 is provided with three
passing holes 25. The space defined by the wings 21, 22 and the
connection plate 23 can serve as an air passage 26 to allow air to
flow therein.
[0017] Please refer to FIGS. 1, 2 and 4. The tops and bottoms of
the wings 21, 22 of the heat sink 10 are formed with connecting
portions 211, 221 for fastening to a lamp head 30 and engaging
portions 212, 222 for fastening to a frame 40, respectively. Thus
this assembly can form an LED lamp. Furthermore, the invention
includes a cover 50 which is a slice made of plastic or metal. The
cover 50 is fastened within the frame 40 for prevent dirt or dusts
from entering the heat sink 10.
[0018] Please refer to FIGS. 6 and 7, which show another embodiment
of the invention. This embodiment differs from the above embodiment
by the connection plate 23a with an open area 23b at the top
thereof. The open area 23b allows air to flow through for heat
convection.
[0019] FIG. 8 shows still another embodiment of the invention. This
embodiment differs from the above embodiments by the wider fins 20.
The wider fins 20 can reduce the quantity required. As shown, only
four (but not limited to) wider fins 20 fastened to the cylinder 11
can form a heat sink.
[0020] While the forgoing is directed to preferred embodiments of
the present invention, other and further embodiments of the
invention may be devised without departing from the basic scope
thereof. As such, the appropriate scope of the invention is to be
determined according to the claims.
* * * * *