Heat sink

Abstract

Disclosed is a heat sink in cooperation with a fan. The heat sink includes a connecting piece and plural air guide fins disposed on the connecting piece at intervals and each having a guiding face thereon. The guiding face functions to direct the airflow generated by the fan from a first axial direction to a second axial direction, thereby improving greatly the heat dissipation efficiency.

1 . A heat sink in cooperation with a fan capable of generating an airflow along a first axial direction, the heat sink comprising:
 a connecting piece; and   a plurality of air guide fins disposed on the connecting piece at intervals, wherein each of the air guide fins has a guiding face that confronts the airflow in the first axial direction and directs the airflow to a second axial direction.   
     
     
         2 . The heat sink of  claim 1 , further comprising a plurality of heat dissipation fins set at one side of the plurality of air guide fins respectively and extending towards the second axial direction, wherein each of the guiding faces leads the airflow to circulate between adjacent two of the heat dissipation fins along the second axial direction. 
     
     
         3 . The heat sink of  claim 1 , further comprising a plurality of heat dissipation fins each sandwiched between adjacent two of the air guide fins and extending towards the second axial direction, wherein each of the guiding faces leads the airflow to circulate between adjacent two of the heat dissipation fins along the second axial direction. 
     
     
         4 . The heat sink of  claim 1 , wherein the plurality of the air guide fins is serially connected on the connecting piece. 
     
     
         5 . The heat sink of  claim 1 , wherein the connecting piece and the plurality of air guide fins are formed integrally. 
     
     
         6 . The heat sink of  claim 1 , wherein the connecting piece and the plurality of air guide fins are made of metal or plastic. 
     
     
         7 . The heat sink of  claim 1 , wherein the guiding face is a curved surface or an inclined plane. 
     
     
         8 . A heat sink in cooperation with a fan capable of generating an airflow along a first axial direction, the heat sink comprising:
 a connecting piece;   a plurality of heat dissipation fins set around a surface of the connecting piece at intervals; and   a plurality of air guide fins set between adjacent two of the heat dissipation fins respectively, each of the air guide fins having a guiding face that confronts the airflow in the first axial direction and directs the airflow to a second axial direction.   
     
     
         9 . The heat sink of  claim 8 , wherein the plurality of heat dissipation fins and the connecting piece are formed integrally. 
     
     
         10 . The heat sink of  claim 8 , wherein the guiding face is a curved surface or an inclined plane.