Heat sink

Abstract

A heat sink for dissipating heat of a heat-generating element on a circuit board includes a base, a linear fastener and a heat-dissipating fin set. The linear fastener includes a fixing section disposed on the base and an engaging section extending from the fixing section. The engaging section extends out of the base to be fixed on the circuit board. The heat-dissipation fin set is combined on the base and has stamped fins. The bottom of a portion of the stamped fins is provided with a receiving means at a position corresponding to the fixing section. The fixing section is disposed in the receiving means and clamped between the heat-dissipation fin set and the base. The linear fastener is used to combine the heat-dissipating fin set on the circuit board to increase the heat-dissipating efficiency of the heat sink to the heat-generating element.

What is claimed is: 
     
         1 . A heat sink, configured for heat dissipation of a heat-generating element on a circuit board and including:
 a base;   a pair of linear fasteners each comprising a fixing section and an engaging section bent to extend from the fixing section, the fixing sections being disposed on the base, the engaging sections extending out of the base to be fixed on the circuit board; and   a heat-dissipation fin set, combined on the base and having a plurality of stamped fins engaged with each other, the bottom of a portion of the stamped fins being provided with a receiving means at a position corresponding to the fixing sections, the fixing sections being disposed in the receiving means and clamped between the heat-dissipation fin set and the base.   
     
     
         2 . The heat sink according to  claim 1 , wherein each of the stamped fins has an abutting piece adhered to the base and a plurality of engaging pieces engaged with each other, and the abutting pieces of adjacent two stamped fins abut against each other to form a heat-dissipating channel there between. 
     
     
         3 . The heat sink according to  claim 2 , wherein the linear fastener comprises two engaging sections, and the two engaging sections are bent to extend from both ends of the fixing sections toward the same direction. 
     
     
         4 . The heat sink according to  claim 3 , wherein the fixing section comprises a pressing portion and two connecting portions extending from both ends of the pressing portion in opposite directions, the pressing portion is located between the engaging pieces, and the two connecting portions extend out of the engaging pieces. 
     
     
         5 . The heat sink according to  claim 2 , wherein the fixing section is formed into an L shape and comprises a pressing portion and a connecting portion extending from one end of the pressing portion, the pressing portion is located between the engaging pieces, and the connecting portion extends out of the engaging pieces. 
     
     
         6 . The heat sink according to  claim 4 , wherein the receiving means is a groove, the pressing portion comprises a longitudinal rod substantially perpendicular to the abutting piece, and the longitudinal rod is disposed in the groove to abut against the bottom of the groove. 
     
     
         7 . The heat sink according to  claim 5 , wherein the receiving means is a groove, the pressing portion comprises a longitudinal rod substantially perpendicular to the abutting piece, and the longitudinal rod is disposed in the groove to abut against the bottom of the groove. 
     
     
         8 . The heat sink according to  claim 4 , wherein the receiving means is a hollowed trough, the pressing portion comprises a transverse rod substantially in parallel to the abutting piece, and the transverse rod is disposed in the hollowed trough. 
     
     
         9 . The heat sink according to  claim 5 , wherein the receiving means is a hollowed trough, the pressing portion comprises a transverse rod substantially in parallel to the abutting piece, and the transverse rod is disposed in the hollowed trough. 
     
     
         10 . The heat sink according to  claim 4 , wherein each of the engaging sections comprises a locking arm and a hook formed on the distal end of the locking arm, the locking arm extends upwardly and obliquely from the distal end of the fixing section, and the hook is bent toward the inside of the linear fastener. 
     
     
         11 . The heat sink according to  claim 5 , wherein each of the engaging sections comprises a locking arm and a hook formed on the distal end of the locking arm, the locking arm extends upwardly and obliquely from the distal end of the fixing section, and the hook is bent toward the inside of the linear fastener. 
     
     
         12 . The heat sink according to  claim 1 , wherein the pair of linear fasteners are arranged adjacent to each other, the heat-dissipating fin set is divided into a first heat-dissipating fin set and a second heat-dissipating fin set, the pair of linear fasteners are disposed on the bottom of the first heat-dissipating fin set and the second heat-dissipating fin set, and the connecting portions are disposed between the first heat-dissipating fin set and the second heat-dissipating fin set. 
     
     
         13 . A heat sink, configured for heat dissipation of a heat-generating element on a circuit board and including:
 a base;   a linear fastener comprising a fixing section and an engaging section bent to extend from the fixing section, the fixing section being disposed on the base, the engaging section extending out of the base to be fixed on the circuit board; and   a heat-dissipation fin set, combined on the base and having a plurality of stamped fins engaged with each other, the bottom of a portion of the stamped fins being provided with a receiving means at a position corresponding to the fixing section, the fixing section being disposed in the receiving means and clamped between the heat-dissipation fin set and the base.   
     
     
         14 . The heat sink according to  claim 13 , wherein each of the stamped fins has an abutting piece adhered to the base and a plurality of engaging pieces engaged with each other, and the abutting pieces of adjacent two stamped fins abut against each other to form a heat-dissipating channel there between. 
     
     
         15 . The heat sink according to  claim 14 , wherein the linear fastener comprises two engaging sections, and the two engaging sections are bent to extend from both ends of the fixing section in opposite directions. 
     
     
         16 . The heat sink according to  claim 15 , wherein the fixing section is formed into a N shape and comprises a pressing portion and two connecting portions extending from the pressing portion in opposite directions. 
     
     
         17 . The heat sink according to  claim 16 , wherein the receiving means is a groove, and the pressing portion is disposed in the groove to abut against the bottom of the groove. 
     
     
         18 . The heat sink according to  claim 16 , wherein the receiving means is a hollowed trough, and the two connecting portions are disposed in the hollowed trough.