Heat dissipation device

Abstract

A heat dissipation device adapted for dissipating heat generated by a heat source is provided. The heat dissipation device includes a base and a heat dissipation fin assembly. The base is disposed on the heat source. The heat dissipation fin assembly is disposed on the base and includes a plurality of parallel fins. The heat dissipation fins assembly has opposite air inlet side and air outlet side. A turbulence generating structure is formed by at least a part of the fins or holes at the air inlet or the air outlet of the heat dissipation fin assembly.

1 . A heat dissipation device adapted for dissipating heat of a heat source, the heat dissipation device comprising:
 a base adapted to be disposed on the heat source; and   a heat dissipation fin assembly disposed on the base and comprising a plurality of fins, the heat dissipation fin assembly having opposite air inlet side and air outlet side, wherein a turbulence generating structure is formed by at least a part of the fins or holes at the air inlet side or the air outlet side.   
     
     
         2 . The heat dissipation device according to  claim 1 , wherein the fins or holes are disposed on one side of a centerline of the heat dissipation fin assembly, and the number of the fins or holes gradually increases in the direction toward or away from the heat source. 
     
     
         3 . The heat dissipation device according to  claim 1 , wherein the turbulence generating structure is formed by reducing the size of at least a part of the fins at the air outlet side. 
     
     
         4 . The heat dissipation device according to  claim 1 , wherein the turbulence generating structure comprises a plurality of projections or recesses on surfaces of the fins. 
     
     
         5 . The heat dissipation device according to  claim 1 , wherein the turbulence generating structure is formed by downwardly bending at least a part of the fins at the air outlet side. 
     
     
         6 . The heat dissipation device according to  claim 1 , wherein the fins or holes for forming the turbulence generating structure are disposed below a middle height line of the heat dissipation fin assembly and are uniformly distributed. 
     
     
         7 . The heat dissipation device according to  claim 6 , wherein the turbulence generating structure comprises a plurality of projections or recesses on surfaces of the fins. 
     
     
         8 . The heat dissipation device according to  claim 6 , wherein the turbulence generating structure is formed by downwardly bending at least a part of the fins at the air outlet side.