Heat Sink Structure

Abstract

A heat sink structure includes a heat dissipating body and at least one heat pipe. The heat dissipating body includes a main body having two opposite first and second end faces, and a plurality of radiating fins formed on two wall surfaces of the main body. The heat dissipating body is made of a heat-conducting plastic material through injection molding, and the heat pipe is embedded in the heat dissipating body during the process of injection molding the heat dissipating body. The heat pipe has two opposite first and second ends respectively exposed from the first and second end faces of the heat dissipating body for directly contacting with a heat source, and a pipe body helically extended between the first and second ends and embedded in the heat dissipating body. With these arrangements, the heat sink structure has reduced weight and material cost while providing good heat dissipating effect.

1 . A heat sink structure comprising:
 a heat dissipating body including a main body having a first end face and a second end face opposite to the first end face, and a plurality of radiating fins formed on the main body; and   at least one heat pipe being embedded in the main body of the heat dissipating body, and having a first end and a second end located at the first end face and the second end face of the main body of the heat dissipating body, respectively.   
     
     
         2 . The heat sink structure as claimed in  claim 1 , wherein the radiating fins are formed on an outer wall surface of the main body. 
     
     
         3 . The heat sink structure as claimed in  claim 1 , wherein the radiating fins are formed on an inner wall surface of the main body. 
     
     
         4 . The heat sink structure as claimed in  claim 1 , wherein the heat dissipating body is made of a plastic material through injection molding, and the heat pipe is embedded in the heat dissipating body during the process of injection molding the heat dissipating body. 
     
     
         5 . The heat sink structure as claimed in  claim 1 , wherein the first end of the heat pipe is exposed from the first end face of the main body of the heat dissipating body. 
     
     
         6 . The heat sink structure as claimed in  claim 1 , wherein the second end of the heat pipe is exposed from the second end face of the main body of the heat dissipating body. 
     
     
         7 . The heat sink structure as claimed in  claim 1 , wherein the heat pipe has a pipe body extended between the first and the second end, and the pipe body being embedded in the heat dissipating body. 
     
     
         8 . The heat sink structure as claimed in  claim 7 , wherein the pipe body is helically extended between the first and the second end. 
     
     
         9 . The heat sink structure as claimed in  claim 4 , wherein the plastic material for molding the heat dissipating body has thermal conductivity. 
     
     
         10 . The heat sink structure as claimed in  claim 9 , wherein the plastic material has a melting point lower than that of a material selected for forming the heat pipe. 
     
     
         11 . The heat sink structure as claimed in  claim 10 , wherein the plastic material is selected from the group consisting of Ethylon (UPE), polyoxymethylene (POM), polyethylene terephthalate (PETP), nylon, polypropylene (PP), polyethylene (PE), polyvinylidene fluoride (PVDF), Teflon (polytetrafluoroethylene or PTFE), polyvinyl chloride (PVC), Acrylonitrile Butadiene Styrene (ABS), tempered glass, polyether polyols (PES), acrylic (polymethylmethacrylate or PMMA), poly(ether-ether-ketone) (PEEK), and poly(amide-imide) (PAI).