Heat Sink and Case Having the Same

Abstract

A heat sink adapted to dissipate heat from a heat source includes a heat dissipating unit that includes at least one deformation portion protruding toward the heat source, and a reflective surface formed on the deformation portion and facing the heat source for reflecting radiant heat from the heat source. A case including the heat sink is also disclosed.

What is claimed is: 
     
         1 . A heat sink adapted to dissipate heat from a heat source, said heat sink comprising:
 a heat dissipating unit that includes at least one deformation portion protruding toward the heat source, and a reflective surface formed on said deformation portion and facing the heat source for reflecting radiant heat from the heat source.   
     
     
         2 . The heat sink as claimed in  claim 1 , wherein said heat dissipating unit includes a heat dissipating body that is made of a metal material and that includes the deformation portion. 
     
     
         3 . The heat sink as claimed in  claim 2 , wherein the metal material is selected from the group consisting of gold, silver, copper, aluminum, and combinations thereof. 
     
     
         4 . The heat sink as claimed in  claim 2 , wherein said reflective surface is formed by polishing a surface of said heat dissipating body. 
     
     
         5 . The heat sink as claimed in  claim 1 , wherein said heat dissipating unit includes a heat dissipating body that includes the deformation portion and that is made of one of a metal material and a material exhibiting electrical conductivity and thermal anisotropy. 
     
     
         6 . The heat sink as claimed in  claim 5 , wherein said heat dissipating unit further includes a reflective layer that has said reflective surface and that is formed on said heat dissipating body by electroplating techniques. 
     
     
         7 . The heat sink as claimed in  claim 6 , wherein said reflective layer is made of nickel or chromium. 
     
     
         8 . The heat sink as claimed in  claim 6 , wherein said heat dissipating unit further includes an under-plate layer interposed between said heat dissipating body and said reflective layer. 
     
     
         9 . The heat sink as claimed in  claim 1 , wherein said heat dissipating unit includes a heat dissipating body that includes the deformation portion and that is made of a polymeric material. 
     
     
         10 . The heat sink substrate as claimed in  claim 9 , wherein said heat dissipating unit further includes a reflective layer that has said reflective surface and that is formed on said heat dissipating body by sputtering techniques. 
     
     
         11 . The heat sink substrate as claimed in  claim 1 , wherein said reflective surface includes a deformation region covering said deformation portion and a surrounding region surrounding said deformation region and said deformation portion. 
     
     
         12 . The heat sink as claimed in  claim 1 , further comprising a transparent insulating unit disposed on said reflective surface of said heat dissipating unit and facing the heat source. 
     
     
         13 . The heat sink as claimed in  claim 12 , wherein said transparent insulating unit includes an electrically insulating film and glue film disposed between said electrically insulating film and said reflective surface for adhering said electrically insulating film to said reflective surface. 
     
     
         14 . The heat sink as claimed in  claim 1 , further comprising an adhesive layer disposed on and adhered to a securing surface of said heat dissipating unit opposite to said reflective surface. 
     
     
         15 . The heat sink as claimed in  claim 14 , further comprising a release liner adhered to said adhesive layer opposite to said heat dissipating unit. 
     
     
         16 . The heat sink substrate as claimed in  claim 15 , wherein said release liner includes a separation portion aligned with said deformation portion, and a tear-off portion surrounding said separation portion and being peeled to expose said adhesive layer for adhering said heat dissipating unit to an object. 
     
     
         17 . The heat sink as claimed in  claim 1 , wherein said deformation portion has a cross section that is shaped as one of a circle, oval, and polygon. 
     
     
         18 . A case adapted to dissipate heat from a heat source, comprising:
 a housing; and   said heat sink of  claim 1 , adhered to said housing.   
     
     
         19 . The case as claimed in  claim 18 , wherein said deformation portion of said heat sink is spaced apart from said housing. 
     
     
         20 . The case as claimed in  claim 18 , wherein said heat sink is disposed for being in contact with the heat source.