Laminating Heat Sink Having Enhanced Heat Dissipation Capacity

Abstract

A laminating heat sink includes a first heatsink plate, at least one second heatsink plate overlapping the first heatsink plate, and a plurality of fixing bars each extended through the first heatsink plate and the second heatsink plate to combine and fix the first heatsink plate and the second heatsink plate. The first heatsink plate has a first side combining a heat source and a second side abutting the second heatsink plate. Thus, each of the fixing bars is extended through the first heatsink plate and the second heatsink plate so that the heat produced by the heat source is directly introduced by the fixing bars and is transferred through the first heatsink plate and the second heatsink plate easily and quickly so as to achieve a quick heat dissipation effect.

1 . A heat sink, comprising:
 a first heatsink plate;   at least one second heatsink plate overlapping the first heatsink plate; and   a plurality of fixing bars each extended through the first heatsink plate and the second heatsink plate to combine and fix the first heatsink plate and the second heatsink plate.   
     
     
         2 . The heat sink of  claim 1 , wherein
 the first heatsink plate is made of a non-metallic material having great heatsink feature;   the second heatsink plate is made of a non-metallic material having great heatsink feature;   each of the fixing bars is made of metallic material having great heat conductivity.   
     
     
         3 . The heat sink of  claim 1 , wherein
 the first heatsink plate has a surface provided with a plurality of first through holes to allow passage of the fixing bars;   the second heatsink plate has a surface provided with a plurality of second through holes to allow passage of the fixing bars;   each of the fixing bars is extended through the first through holes of the first heatsink plate and the second through holes of the second heatsink plate.   
     
     
         4 . The heat sink of  claim 2 , wherein
 the first heatsink plate has a porous structure;   the second heatsink plate has a porous structure.   
     
     
         5 . The heat sink of  claim 1 , wherein the first heatsink plate has a first side adapted for combining a heat source and a second side abutting the second heatsink plate. 
     
     
         6 . The heat sink of  claim 5 , wherein a heat produced by the heat source is directly introduced by the fixing bars and is transferred through the first heatsink plate and the second heatsink plate. 
     
     
         7 . The heat sink of  claim 1 , wherein each of the fixing bars is perpendicular to the first heatsink plate and the second heatsink plate. 
     
     
         8 . The heat sink of  claim 5 , wherein
 each of the fixing bars has a first end and a second end;   the first end of each of the fixing bars is electrically connected with an electrical connecting terminal;   the second end of each of the fixing bars is electrically connected with an external power supply.   
     
     
         9 . The heat sink of  claim 8 , wherein the electrical connecting terminal is connected with the heat source and is located outside of the first heatsink plate. 
     
     
         10 . The heat sink of  claim 8 , wherein
 each of the fixing bars has a hollow structure and has an inner portion provided with a passage to allow passage of a conducting wire;   the conducting wire has a first end and a second end;   the first end of the conducting wire is electrically connected with the electrical connecting terminal;   the second end of the conducting wire is electrically connected with the external power supply.   
     
     
         11 . The heat sink of  claim 5 , wherein the laminating heat sink further comprises a plurality of heat conducting bars each extended through the first heatsink plate and the second heatsink plate. 
     
     
         12 . The heat sink of  claim 11 , wherein
 the first heatsink plate has a plurality of first heat conducting holes to allow passage of the heat conducting bars;   the second heatsink plate has a plurality of second heat conducting holes to allow passage of the heat conducting bars;   the heat conducting bars transfer heat produced by the heat source to the first heatsink plate and the second heatsink plate.   
     
     
         13 . The heat sink of  claim 11 , wherein each of the heat conducting bars  5  has a hollow structure. 
     
     
         14 . The heat sink of  claim 11 , wherein each of the heat conducting bars  5  is made of a metallic material having great heat conductivity. 
     
     
         15 . The heat sink of  claim 11 , wherein each of the heat conducting bars is made of a nonmetallic material which has a heat conductivity greater than that of the first heatsink plate and the second heatsink plate. 
     
     
         16 . The heat sink of  claim 1 , wherein the laminating heat sink further comprises at least one interface layer mounted between the first heatsink plate and the second heatsink plate. 
     
     
         17 . The heat sink of  claim 16 , wherein the interface layer is made of is made of a metallic material having great heat conductivity. 
     
     
         18 . The heat sink of  claim 16 , wherein the
 the laminating heat sink comprises a plurality of second heatsink plates laminating each other;   the laminating heat sink comprises a plurality of interface layers mounted between the first heatsink plate and one of the second heatsink plates and between the other of the second heatsink plates.   
     
     
         19 . The heat sink of  claim 5 , wherein the laminating heat sink further comprises a heat conducting layer mounted between the heat source and the first heatsink plate.