Radiating fin

Abstract

A radiating fin has a flat surface and two rearward extended flanges formed along two opposite edges of the flat surface. The flat surface is formed with a plurality of openings, through which airflow can flow to carry away heat absorbed by the radiating fin. A lug is inward extended from one side of each of the openings adjacent to the flange to locate in the same plane as the flat surface, and a catch in the form of a frame is rearward extended from each of the openings with two lateral sides of the catch spaced from two lateral ends of the lug. When a second radiating fin is connected to a front side of a first radiating fin, the lugs on the first radiating fin are caught in the catches on the second radiating fin, bringing the two radiating fins to firmly assemble together.

1 . A radiating fin made of a sheet material, comprising a flat surface and two rearward extended flanges formed along two opposite edges of the flat surface; the flat surface being formed along the two opposite edges adjacent to the flanges with a plurality of openings each; a lug being inward extended from one side of each of the openings adjacent to the flange to locate in the same plane as the flat surface, and a catch in the form of a frame defining a through hole therein being rearward extended from each of the openings with two lateral sides of the catch spaced from two lateral ends of the lug;
 whereby when a second radiating fin is connected to a front side of a first radiating fin, the lugs on the first radiating fin are caught in the through holes of the catches on the second radiating fin, bringing the two radiating fins to firmly assembled together.   
   
   
       2 . The radiating fin as claimed in  claim 1 , wherein the catches are selected from the group consisting of a trapezoidal frame, a triangular frame, and a semicircular frame. 
   
   
       3 . The radiating fin as claimed in  claim 1 , wherein the openings are selected from the group consisting of a trapezoidal opening, a triangular opening, and a semicircular opening.