Thermal module for light source

Abstract

The present invention discloses a thermal module for light source, which comprises a heat-conducting part and a heat-dissipating part engaged therewith. The heat-conducting part is provided with a heat-receiving portion to receive the heat generated by a light source, a joint portion to join with the heat-dissipating part. The heat-dissipating part is provided with a plurality of fin-shaped heat-dissipating sheets for heat dissipation and to join with the joint portion of the heat-conducting part.

1 . A thermal module for light source, comprising:
 a heat-conducting part comprising a heat-receiving portion, to receive heat generated by a light source;   a joint portion extended out from one side of said heat-receiving portion, and said joint portion comprises a plurality of first engaging slots distributed on outer periphery of said joint portion; and   a heat-dissipating part comprising a plurality of fin-shaped heat-dissipating sheets formed radially extended thereon, and said fin-shaped heat-dissipating sheets comprising a plurality of second engaging slots formed thereon, wherein said second engaging slots are corresponding to said first engaging slots for engaging mutually, fixing said heat-dissipating part on outer periphery of said joint portion, and receiving said heat from said heat-conducting part;   wherein heat transfer coefficient of said heat-conducting part is higher than heat transfer coefficient of said heat-dissipating part.   
     
     
         2 . The thermal module for light source of  claim 1 , wherein said heat-conducting part and said heat-dissipating part are formed as symmetrical forms, and said heat-conducting part and said heat-dissipating part are joined together by coaxial alignment. 
     
     
         3 . The thermal module for light source of  claim 2 , wherein said symmetrical forms are cylinders, rectangular cylinders, or a combination thereof. 
     
     
         4 . The thermal module for light source of  claim 1 , wherein said first engaging slots and said second engaging slots are tightly joined together by thermal expansion and contraction. 
     
     
         5 . The thermal module for light source of  claim 1 , wherein said heat-conducting part is formed by casting. 
     
     
         6 . The thermal module for light source of  claim 1 , wherein said heat-dissipating part is formed by extrusion. 
     
     
         7 . The thermal module for light source of  claim 1 , wherein said heat-conducting part is made of copper, aluminum, silver, gold, or composite materials with high heat transfer coefficient. 
     
     
         8 . The thermal module for light source of  claim 1 , wherein said fin-shaped heat-dissipating sheets are formed as wave-typed shape for improving heat transferring performance. 
     
     
         9 . The thermal module for light source of  claim 1 , wherein said second engaging slots are formed on middle section of said fin-shaped heat-dissipating sheets for uniformly heat distribution on said fin-shaped heat dissipating sheets. 
     
     
         10 . The thermal module for light source of  claim 1 , wherein said light source is light-emitting diode (LED).