Forced-air cooling heat sink

Abstract

A forced-air cooling heat sink includes a boxlike body with opened ends to guide the forced-air to flow from one opened end to the other opened end. Two heat sink units, each consisting of a platelike base and a plurality of cooling fins protruding perpendicularly from an inner surface of the platelike base, are fixed at their both sides to two plate members, thereby forming the boxlike body.

What is claimed is:  
     
         1 . A forced-air cooling heat sink comprising: 
 a boxlike body with opened ends so as to guide the forced-air to flow from one opened end to the other opened end,    wherein the boxlike body is constituted by at least one heat sink unit and at least one plate member,    said at least one heat sink unit has a platelike base and a plurality of cooling fins protruding from an inner surface of said platelike base, said platelike base having an outer surface serving as at least one surface of said boxlike body; and    said at least one plate member serves as other surface of said boxlike body.    
     
     
         2 . The forced-air cooling heat sink according to  claim 1 , wherein said boxlike body is constituted by two heat sink units positioned in an opposed relationship and two plate members attached to both sides of said platelike bases of said opposed heat sink units so as to accommodate said cooling fins between said two plate members.  
     
     
         3 . The forced-air cooling heat sink according to  claim 1 , wherein said boxlike body is constituted by only one heat sink unit and a U-shaped plate member attached to both sides of said platelike base so as to accommodate said cooling fins of said heat sink unit.