Heat dissipation device with a heat pipe

Abstract

A heat dissipation device includes a seat and a base having a first face and a second face opposite to the first face and thermally contacting the seat. A plurality of fins extends from the first face of the base. Two heat pipes are thermally arranged on the second face of the base. Each of the two heat pipes is bent and has a section sandwiched between the base and the seat, and another section thereof stretching along the base from said section to a portion of the base in no attachment with the seat.

1 . A heat dissipation device comprising: 
 a base having a first face and a second face opposite to the first face;    a seat attached to the second face of the base and adapted for absorbing heat from an electronic device;    a plurality of fins arranged on the first face of the base; and    a bent heat pipe comprising a section sandwiched between the seat and the second face of the base, and another section stretching on the second surface of the base from said section to a portion of the base in no attachment with the seat.    
   
   
       2 . The heat dissipation device of  claim 1  further comprising a heat pipe having a section sandwiched between the seat and the second face of the base, and another section stretching on the second surface of the base from said section to a portion of the base in no attachment with the seat.  
   
   
       3 . The heat dissipation device of  claim 2 , wherein each of the heat pipes is generally U-shaped and comprises a first section and two second sections extending from two ends of the first section.  
   
   
       4 . The heat dissipation device of  claim 3 , wherein the first sections of the two heat pipes are parallel to each other and sandwiched between the second face of the base and the seat.  
   
   
       5 . The heat dissipation device of  claim 4 , wherein the second sections of the two heat pipes extend oppositely beyond the seat and located adjacent two opposite lateral sides of the second face of the base.  
   
   
       6 . The heat dissipation device of  claim 3 , wherein each of the two heat pipes has one of the two second sections sandwiched between the second face of the base and the seat, the other second section thereof located adjacent two opposite lateral sides of the second face of the base.  
   
   
       7 . The heat dissipation device of  claim 6 , wherein the two heat pipes have the first sections thereof extending beyond the seat and located adjacent another two opposite lateral sides of the second face of the base.  
   
   
       8 . The heat dissipation device of  claim 7 , wherein the second sections of the two heat pipes are parallel to each other.  
   
   
       9 . The heat dissipation device of  claim 8 , wherein one of the second sections of one of the heat pipes is positioned between the two second sections of the other one of the heat pipes.  
   
   
       10 . The heat dissipation device of  claim 2 , wherein each of the two heat pipes is generally rectangular without being closed up and comprises four sections.  
   
   
       11 . The heat dissipation device of  claim 10 , wherein the two heat pipes are positioned in the second face of the base taking the format crossing loops, one of the four sections of one of the heat pipes being positioned among the four sections of the other heat pipe.  
   
   
       12 . The heat dissipation device of  claim 1 , wherein the seat is located at a central portion of the second face of the base.  
   
   
       13 . A heat dissipation device comprising: 
 a seat adapted for absorbing heat from an electronic device;    a base having a first face and a second face opposite to the first face thermally contacting the seat;    a plurality of fins extending from the first face of the base; and    two heat pipes being thermally arranged on the second face of the base, at least one of the two heat pipes being bent and having a section located adjacent to a center of the second face of the base and engaged with the seat, and another section thereof located adjacent to a lateral side of the second face of the base and in no engagement with the seat.    
   
   
       14 . The heat dissipation device of  claim 13 , wherein both of the two heat pipes have a section located adjacent to the center of the second face of the base and engaging with the seat, and another section located adjacent to a lateral side of the second face of the base.  
   
   
       15 . The heat dissipation device of  claim 14 , wherein each of the two heat pipes is generally U-shaped, and comprises a first section and two second sections extending from two ends of the first section.  
   
   
       16 . The heat dissipation device of  claim 14 , wherein each of the two heat pipes is generally rectangular, and comprises interconnecting four sections.