Heat sink

Abstract

Provided is a heat sink capable of improving heat dissipating characteristics and saving space with a reduced fin size. The heat sink is provided with: a base plate which has one surface thermally connected to a heat generating component and which has thermally connected thereto a first heat dissipating fin section composed of a thin plate fin; an upper plate which has a second heat dissipating fin section thermally connected on one surface, the second heat dissipating fin section being composed of two kinds of thin plate fins having different heights; and a plurality of heat pipes which are disposed between the other surface of the base plate and the other surface of the upper plate by being thermally connected to the surfaces and which include a heat pipe that has at least a part thereof inserted into a part of the second heat dissipating fin section.

1 . A heat sink comprising:
 a base plate which has one surface thermally connected to a heat generating component or a base plate which has one surface thermally connected to a heat generating component and which has thermally connected thereto a first heat dissipating fin section composed of a thin plate fin;   an upper plate which has a second heat dissipating fin section thermally connected on one surface, the second heat dissipating fin section having two kinds of thin plate fins having different heights; and   a plurality of heat pipes which are disposed between an opposite surface of the base plate and an opposite surface of the upper plate by being thermally connected to the opposite surfaces and which include a heat pipe that has at least a part thereof inserted into a part of the second heat dissipating fin section.   
     
     
         2 . The heat sink of  claim 1 , wherein the second heat dissipating fin section has a plurality of low thin plate fins that are disposed vertically on the one surface of the upper plate and a plurality of high thin plate fins that are disposed vertically in adjacent to the low thin plate fins. 
     
     
         3 . The heat sink of  claim 1 , wherein the second heat dissipating fin section has a plurality of low thin plate fins that are disposed vertically on the one surface of the upper plate and a plurality of thin plate fins that are disposed horizontally at an end of the low thin plate fins. 
     
     
         4 . The heat sink of  claim 2 , wherein the first heat dissipating fin section comprises a plurality of thin plate fins that are disposed vertically on a part of the one surface of the base plate corresponding to the high thin plate fins. 
     
     
         5 . The heat sink of  claim 3 , wherein the first heat dissipating fin section comprises a plurality of thin plate fins that are disposed vertically on a part of the one surface of the base plate corresponding to the high thin plate fins. 
     
     
         6 . The heat sink according to  claim 1 , wherein the heat pipes are heat pipes having at least one flatten part respectively which are arranged in parallel at a center thereof and which are bent toward respective outsides of the upper plate at both longitudinal ends of the upper plate. 
     
     
         7 . The heat sink according to  claim 2 , wherein the heat pipes are heat pipes having at least one flatten part respectively which are arranged in parallel at a center thereof and which are bent toward respective outsides of the upper plate at both longitudinal ends of the upper plate. 
     
     
         8 . The heat sink according to  claim 3 , wherein the heat pipes are heat pipes having at least one flatten part respectively which are arranged in parallel at a center thereof and which are bent toward respective outsides of the upper plate at both longitudinal ends of the upper plate. 
     
     
         9 . The heat sink according to  claim 4 , wherein the heat pipes are heat pipes having at least one flatten part respectively which are arranged in parallel at a center thereof and which are bent toward respective outsides of the upper plate at both longitudinal ends of the upper plate. 
     
     
         10 . The heat sink according to  claim 5 , wherein the heat pipes are heat pipes having at least one flatten part respectively which are arranged in parallel at a center thereof and which are bent toward respective outsides of the upper plate at both longitudinal ends of the upper plate. 
     
     
         11 . The heat sink of  claim 2 , wherein the heat pipe inserted into the part of the second heat dissipating fin section is a heat pipe that is arranged at one side and passes through the vertically disposed high thin plate fins laterally from one direction to another. 
     
     
         12 . The heat sink of  claim 3 , wherein the heat pipe inserted into the part of the second heat dissipating fin section is a heat pipe that is arranged at both longitudinal ends of the upper plate and passes vertically through the horizontally disposed thin plate fins.