Heat sink

Abstract

A heat sink includes a heat conductive portion, a plurality of fins and at least one connecting portion. The fins and connecting portion are disposed around the heat conductive portion. The connecting portion is disposed between the fins and has a fixed part. The fixed part is disposed at one side of the connecting portion and is used for connecting with a fastener.

1 . A heat sink, comprising:
 a plurality of fins; and   at least one connecting portion disposed between the fins, wherein the connecting portion has a fixed part disposed at one side of the connecting portion for connecting with a fastener.   
   
   
       2 . The heat sink according to  claim 1 , further comprising a heat conductive portion connected with the fins and the connecting portion. 
   
   
       3 . The heat sink according to  claim 2 , wherein the fins and the connecting portion are disposed around the heat conductive portion. 
   
   
       4 . The heat sink according to  claim 3 , wherein the fins are arranged in a radiation way. 
   
   
       5 . The heat sink according to  claim 2 , wherein the fins are curved. 
   
   
       6 . The heat sink according to  claim 2 , wherein each of the fins has a bifurcated portion. 
   
   
       7 . The heat sink according to  claim 6 , wherein each of the fins is extended outwardly from the heat conductive portion, and the bifurcated portion is disposed at one end of the fin away from the heat conductive portion. 
   
   
       8 . The heat sink according to  claim 2 , wherein the heat conductive portion has a hole for accommodating a heat conductive member. 
   
   
       9 . The heat sink according to  claim 8 , wherein the heat conductive member is a heat pipe or a solid metal bulk. 
   
   
       10 . The heat sink according to  claim 8 , wherein the heat conductive member is disposed in the hole by a thermal insertion process. 
   
   
       11 . The heat sink according to  claim 1 , wherein the fastener is a push pin. 
   
   
       12 . The heat sink according to  claim 1 , wherein the fastener is a spring screw. 
   
   
       13 . The heat sink according to  claim 1 , wherein the fixed part, the connecting portion and the fins are integrally formed as a single piece. 
   
   
       14 . The heat sink according to  claim 1 , wherein the connecting portion and the fixed part are connected by way of soldering, wedging, hooking or adhering. 
   
   
       15 . The heat sink according to  claim 1 , wherein the fixed part is obtained by cutting the connecting portion to form a trench. 
   
   
       16 . The heat sink according to  claim 15 , wherein the trench is used for adjusting a height of the fastener installed on the heat sink. 
   
   
       17 . The heat sink according to  claim 1 , wherein the heat sink is formed by aluminum extrusion, clipping and jointing, stamping or other mechanical process. 
   
   
       18 . The heat sink according to  claim 1 , wherein the heat sink cooperates with a fan. 
   
   
       19 . The heat sink according to  claim 1 , wherein the heat sink directly contacts with a heat source. 
   
   
       20 . The heat sink according to  claim 19 , wherein the heat source is a central process unit (CPU), a transistor, a server, a high-level graphic card, a hard disk drive, a power supply, a traffic control system, a multimedia electronic device, an access point or a high-level game station.