Heat Sink and Fins Thereof
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.
1. Technical Field
The invention relates to heat sinks, particularly to combinative heat sinks.
2. Related Art
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 INVENTIONAn 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.
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.
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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.
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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.
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.
Type: Application
Filed: Nov 10, 2011
Publication Date: May 16, 2013
Inventor: Shyh-Ming Chen (New Taipei City)
Application Number: 13/293,121