Cooling device

Abstract

A heat-transferring member is mounted on one side of a circuit board. A heat sink is arranged farther away from the circuit board than the heat-transferring member in the thickness direction of the circuit board. The heat sink has a plurality of fins each extending in the direction of the circuit board and separated from each other by a space. Also, the heat sink includes a support portion extending in the direction of the plurality of fins and supporting the plurality of fins. A plurality of heat pipes is connected to the heat-transferring member and separated from each other by a space, each extending in the thickness direction of the circuit board and connecting to the support portion.

What is claimed is: 
     
         1 . A cooling device, the cooling device comprising:
 a heat-transferring member, the heat-transferring member being mounted on one side of a panel-shaped heat-generating body;   a heat sink, the heat sink being arranged farther away from the heat-generating body than the heat-transferring member in the thickness direction of the heat-generating body, the heat sink including a plurality of fins and a support portion, each fin extending in the direction of the heat-generating body and separated from each other by a space, the support portion extending in the direction of the fins and connecting to and supporting the fins; and   a plurality of heat-transferring columns, each heat-transferring column being connected to the heat-transferring member and separated from each other by a space, and extending in the thickness direction of the heat-generating body and connecting to the support portion.   
     
     
         2 . The cooling device of  claim 1 , further comprising a plurality of heat sinks 
     
     
         3 . The cooling device of  claim 2 , wherein each heat sink is arranged in the thickness direction of the heat-generating body. 
     
     
         4 . The cooling device of  claim 3 , wherein each heat sink has the same shape. 
     
     
         5 . The cooling device of  claim 4 , wherein each heat sink is offset in the circumferential direction with respect to an adjacent heat sink. 
     
     
         6 . The cooling device of  claim 5 , wherein each heat sink is centered on the centerline of the heat-generating body in the thickness direction. 
     
     
         7 . The cooling device of  claim 6 , wherein the support portion for each heat sink includes a first extended portion extending in the direction of the heat-generating body. 
     
     
         8 . The cooling device of  claim 7 , wherein the support portion for each heat sink further includes a second extended portion extending in a direction intersecting the direction of extension of the first extended portion. 
     
     
         9 . The cooling device of  claim 8 , wherein a portion of the fins on each heat sink projects from the first extended portion. 
     
     
         10 . The cooling device of  claim 9 , wherein a portion of the fins on each heat sink projects from the second extended portion. 
     
     
         11 . The cooling device of  claim 10 , wherein the second extended portion includes at least two extended portions arranged symmetrically with respect to the centerline of the first extended portion. 
     
     
         12 . The cooling device of  claim 11 , wherein the plurality of each heat-transferring columns comprises at least three heat-transferring columns. 
     
     
         13 . The cooling device of  claim 12 , wherein the support portion comprises at least three connecting portions. 
     
     
         14 . The cooling device of  claim 13 , wherein each connecting portion is connected to one heat-transferring column and arranged at equal intervals in the circumferential direction centered on the centerline of the heat-generating body in the thickness direction. 
     
     
         15 . The cooling device of  claim 14 , wherein each heat sink includes a first half body and a second half body. 
     
     
         16 . The cooling device of  claim 15 , wherein both bodies including a support portion and a plurality of fins and being arranged symmetrically with respect to a straight line running along the heat-generating body. 
     
     
         17 . The cooling device of  claim 16 , wherein an air passage is formed between the first half body and the second half body. 
     
     
         18 . The cooling device of  claim 17 , wherein the air passage extends radially from the centerline running through the heat-generating body in the thickness direction. 
     
     
         19 . The cooling device of  claim 18 , wherein the air passage is linked to the outside of each heat sink. 
     
     
         20 . The cooling device of  claim 19 , wherein the fins in the first half body extend in the direction of the second half body, the fins in the second half body extend in the direction of the first half body, and the air passage is formed between the fins of the first half body and the fins of the second half body.