Heat sink

Inactive Publication Date: 2013-02-21
CHEN SHYH MING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]An object of the invention is to provide a heat sink which uses separate fin

Problems solved by technology

High temperature of heat sinks easily cause scalds to users, especially to chi

Method used

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Example

[0016]Please refer to FIGS. 1-3. The heat sink of the invention includes a tube 11 and a plurality of fins 20. The outside of the tube 11 is formed with slots 12 for being fastened by the fins 20 and grooves 13. Each of the grooves 13 is located between two adjacent ones of the slots 12 for being inserted by a mold (not shown). A hollow 14 of the tube 11 is used for receiving a heat source. Each of the fins 20 has two walls 21, 22 and a bridge 23 therebetween. The bridge can be planar or non-planar such as an arcked surface or a bent surface. Internal sides of the walls 21, 22 are separately inserted into the slots 12 so that the fins 20 are radially arranged around the tube 11. When the grooves 13 are pressed by the mold, the grooves 13 will be deformed to make the slots 12 tightly nip the fins 20.

[0017]Each of the walls 21, 22 of the fins 20 is disposed with three through holes 24 and the bridge 23 is disposed with five through holes 25. An airflow passage 26 is formed by the wall...

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PUM

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Abstract

The heat sink includes a tube and a plurality of fins. The tube has slots and grooves. Each the groove is located between two adjacent ones of the grooves. The fins are separately fastened to the slots. Each the fin has two walls separately fastened to two of the grooves and a bridge connected between the two walls. An airflow passage is formed among the bridge and the walls.

Description

BACKGROUND OF THE INVENTION[0001]1. Technical Field[0002]The invention relates to heat sinks, particularly to radial heat sinks.[0003]2. Related Art[0004]Heat sinks are an essential element for many kinds of electric devices, particularly for LED lamps which are progressively popular around the world. High temperature of heat sinks easily cause scalds to users, especially to children.[0005]Korean patent No. 10-0994603 (hereinafter “KR '603”) discloses a radial heat sink. As shown in FIG. 7 of KR '603, all fins are formed by folding a single sheet of metal. In other words, all fins are continuous. Such a structure requires a forming process and a folding process with very high accuracy. An allowable error is very narrow. This will increase manufacturing costs.SUMMARY OF THE INVENTION[0006]An object of the invention is to provide a heat sink which uses separate fins and a tube to combine together so as to reduce manufacturing accuracy and costs.[0007]To achieve the above object, the h...

Claims

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Application Information

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IPC IPC(8): F28F1/20
CPCH01L23/467H01L21/4878F21K9/1375F21V29/004F21Y2101/02F28F1/20F21V29/83H01L2924/0002F21K9/13F21V29/773F21V29/713H01L2924/00F21V17/002F21V17/101F21V29/74F21K9/23F21Y2115/10
Inventor CHEN, SHYH-MING
Owner CHEN SHYH MING
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