Heat dissipation structure having combined cooling fins

Abstract

The present invention relates to a heat dissipation structure comprising a metal base and a plurality of cooling fins, wherein the metal base is formed with a receiving space therein for receiving a heat generating object, an outer surface of the metal base is equidistantly formed with a plurality of recesses, each of the cooling fins is formed by a U-shaped metal plate including two heat dissipation portions and an elastic engagement portion, the elastic engagement portion is in U-shape and has two ends connected to one end of each of the two heat dissipation portions respectively, and an outer surface of the elastic engagement portion can be engaged with an inner surface of each of the recesses by the resilience thereof, so as to efficiently increase the amount and heat dissipation area of the cooling fins and greatly enhance the heat dissipation efficiency of the heat dissipation structure.

1 . A heat dissipation structure having combined cooling fins, the heat dissipation structure comprising:
 a metal base formed by punching a one-piece metal plate or casting, and having a first surface attached to a heat generating object and a second surface equidistantly formed with a plurality of recesses; and   a plurality of said cooling fins, each of which is formed by punching a one-piece metal plate or casting and includes two heat dissipation portions and an elastic engagement portion, wherein each of the two heat dissipation portions is a planar plate and the elastic engagement portion is a U-shaped plate; two ends of the elastic engagement portion having resilience and connected to one end of the two heat dissipation portions, respectively, and the two ends of the elastic engagement portion being pressed to be close to each other, so that the elastic engagement portion is deformable for being inserted and received in a corresponding said recess, while an outer surface of the elastic engagement portion is allowed to be engaged with an inner surface of the recess of the metal base by the resilience of the elastic engagement portion, such that heat generated by the heat generating object is transferred from the metal base to the cooling fins.   
     
     
         2 . The heat dissipation structure according to  claim 1 , wherein a predetermined angle is defined between each of the heat dissipation portions and each of the two ends of the elastic engagement portion. 
     
     
         3 . A heat dissipation structure having combined cooling fins, the heat dissipation structure comprising:
 a metal base formed by punching a one-piece metal plate or casting, and having a receiving space therein for receiving a heat generating object and an outer surface equidistantly formed with a plurality of recesses; and   a plurality of said cooling fins, each of which is formed by punching a one-piece metal plate to be a U-shaped structure and includes two heat dissipation portions and an elastic engagement portion, wherein each of the two heat dissipation portions is a planar plate and the elastic engagement portion is a U-shaped plate; two ends of the elastic engagement portion having resilience and connected to one end of the two heat dissipation portions, respectively, and the two ends of the elastic engagement portion being pressed to be close to each other, so that the elastic engagement portion is deformable for being inserted and received in a corresponding said recess, while an outer surface of the elastic engagement portion is allowed to be engaged with an inner surface of the recess of the metal base by the resilience of the elastic engagement portion, such that heat generated by the heat generating object is transferred from the metal base to the cooling fins.   
     
     
         4 . The heat dissipation structure according to  claim 3 , wherein a predetermined angle is defined between each of the heat dissipation portions and each of the two ends of the elastic engagement portion.