Annular heat dissipating device

Abstract

An annular heat dissipating device, comprises an annular body; a periphery of the annular body being formed with a plurality of trenches and recesses; which are alternatively arranged. an inner middle area of the annular body having a seat plate for installing at least one heat source; a plurality of heat dissipated fins being arranged in the recesses which are annularly arranged around an outer periphery of the annular body; each fin being inserted into the recess. In assembly by punching, a shaping mold punches a trench between two fins so that two lateral wall of the trench will be pressed and deform; and then the fin in the recess tightly adheres to the outer periphery of the annular body.

1 . An annular heat dissipating device, comprising:
 an annular body; a periphery of the annular body being formed with a plurality of trenches and recesses; which are alternatively arranged. an inner middle area of the annular body having a seat plate for installing at least one heat source;   a plurality of heat dissipated fins being arranged in the recesses which are annularly arranged around an outer periphery of the annular body; each fin being inserted into the recess;   wherein in assembly by punching, a shaping mold punches a trench between two fins so that two lateral wall of the trench will be pressed and deform; and then the fin in the recess tightly adheres to the outer periphery of the annular body.   
   
   
       2 . The annular heat dissipating device as claimed in  claim 1 , wherein the seat plate is installed in a bottom of an opening at a middle portion of the annular body. 
   
   
       3 . The annular heat dissipating device as claimed in  claim 1 , wherein the seat plate is installed in a lateral wall of an opening at a middle portion of the annular body. 
   
   
       4 . The annular heat dissipating device as claimed in  claim 3 , wherein the seat plate is integrally formed on the inner wall. 
   
   
       5 . The annular heat dissipating device as claimed in  claim 1 , wherein the seat plate is installed in an opening of the annular body. 
   
   
       6 . The annular heat dissipating device as claimed in  claim 1 , wherein each fin has an upper detaching seat and a lower detaching seat; when the fins are assembled to the annular seat; the fin is formed in order with a predetermined distance. 
   
   
       7 . The annular heat dissipating device as claimed in  claim 1 , wherein an annular body has one of a round shape, an elliptical shape, a flat annular shape, or an annular body with a sealing opening. 
   
   
       8 . The annular heat dissipating device as claimed in  claim 1 , wherein the heat source is an electronic heat dissipating element. 
   
   
       9 . The annular heat dissipating device as claimed in  claim 1 , wherein the heat source is one of a light emitting diode and an integrated circuit.