Making method for cooling body

Abstract

A method for making a cooling body for a lighting device may include: a) Providing multiple aluminum nitride ceramic radiators; b) Putting the multiple aluminum nitride ceramic radiators into a mold; c) Closing the mold, and injecting a melting metal into the mold so that the metal encloses a portion of each of the aluminum nitride ceramic radiators, wherein the metal has a melting point lower than that of the aluminum nitride ceramic radiators; and d) Opening the mold, and obtaining the cooling body.

What is claimed is: 
     
         1 . A method for making a cooling body for a lighting device, wherein the method comprises:
 a) Providing multiple aluminum nitride ceramic radiators;   b) Putting the multiple aluminum nitride ceramic radiators into a mold;   c) Closing the mold, and injecting a melting metal into the mold so that the metal encloses a portion of each of the aluminum nitride ceramic radiators, wherein the metal has a melting point lower than that of the aluminum nitride ceramic radiators; and   d) Opening the mold, and obtaining the cooling body.   
     
     
         2 . The method according to  claim 1 ,
 wherein in a) multiple fin-shape aluminum nitride ceramic radiators are provided.   
     
     
         3 . The method according to  claim 2 ,
 wherein in b) the multiple fin-shape aluminum nitride ceramic radiators are arranged in the mold in a radial form.   
     
     
         4 . The method according to  claim 3 ,
 wherein in c) the melting metal is injected into a at least a portion of a central region surrounded by the multiple fin-shape aluminum nitride ceramic radiators to form a cylinder or a ring bearing the multiple fin-shape aluminum nitride ceramic radiators.   
     
     
         5 . The method according to  claim 1 ,
 wherein multiple columnar aluminum nitride ceramic radiators are provided.   
     
     
         6 . The method according to  claim 2 ,
 wherein in b) the multiple fin-shape or columnar aluminum nitride ceramic radiators are arranged in parallel in the mold.   
     
     
         7 . The method according to  claim 6 ,
 wherein in c) the melting metal is injected into bottom ends of the multiple fin-shape or columnar aluminum nitride ceramic radiators to form a bottom plate bearing the multiple aluminum nitride ceramic radiators.   
     
     
         8 . The method according to  claim 1 ,
 wherein in a) multiple fin-shape aluminum nitride ceramic radiators with a center bore are provided.   
     
     
         9 . The method according to  claim 8 ,
 wherein in b) the multiple fin-shape aluminum nitride ceramic radiators with a center bore are arranged in parallel in the mold.   
     
     
         10 . The method according to  claim 9 ,
 wherein in c) the melting metal is injected into respective center bores of the multiple fin-shape aluminum nitride ceramic radiators to form an elongated rod bearing the multiple fin-shape aluminum nitride ceramic radiators.   
     
     
         11 . The method according to  claim 5 ,
 wherein in b) the multiple fin-shape or columnar aluminum nitride ceramic radiators are arranged in parallel in the mold.   
     
     
         12 . The method according to  claim 3 ,
 wherein the melting metal is injected into bottom ends of the multiple fin-shape aluminum nitride ceramic radiators to form a bottom plate bearing the multiple aluminum nitride ceramic radiators.