Heat dissipation device

Abstract

A heat dissipation device includes a heat sink, a fan placed on the heat sink and two wire clips securing the fan on the heat sink. The heat sink has two grooves defined in two flanks thereof. The fan has a frame with a plurality of holes defined therein. Each clip includes an engaging arm received in a corresponding groove of the heat sink, two tensile parts extending upwardly from two opposite ends of the engaging arm, two hooks formed at free ends of the tensile parts and inserted into the holes of the fan, and a handle protruding from a middle of the engaging arm.

1 . A heat dissipation device comprising:
 a heat sink;   a fan placed on a top of the heat sink; and   two wire clips securing the fan on the heat sink, each of the clips having an engaging arm engaged with the heat sink, two tensile parts extending upwardly from two opposite ends of the engaging arm, and two hooks formed at free ends of the tensile parts and engaged with the fan.   
     
     
         2 . The heat dissipation device as claimed in  claim 1 , wherein the tensile parts and the hooks are symmetric relative to a middle of the engaging arm. 
     
     
         3 . The heat dissipation device as claimed in  claim 1 , wherein each of the clips further has a handle protruding from a middle of the engaging arm. 
     
     
         4 . The heat dissipation device as claimed in  claim 1 , wherein the fan comprises a frame with holes defined therein, and the hooks of the clips are inserted into the holes. 
     
     
         5 . The heat dissipation device as claimed in  claim 1 , wherein the heat sink comprises a base plate and two first fins extending from two flanks of the base plate, and a first horizontal portion extending outwardly from a top end of one of the two first fins, a first perpendicular portion extending upwardly from a free end of the first horizontal portion, a second horizontal portion extending outwardly from a top end of the first perpendicular portion and a second perpendicular portion extending upwardly from a free end of the second horizontal portion, and wherein the fan is located on the second horizontal portions and between the second perpendicular portions, and the engaging arms of the clips engage bottoms of the first horizontal portions. 
     
     
         6 . The heat dissipation device as claimed in  claim 5 , wherein a groove is defined in the bottom of each first horizontal portion for receiving a corresponding engaging arm therein. 
     
     
         7 . The heat dissipation device as claimed in  claim 5 , wherein the heat sink further comprises a plurality of second fins extending from the base plate and between the first fins. 
     
     
         8 . The heat dissipation device as claimed in  claim 7 , wherein the heat sink further comprises a plurality of third fins extending from first horizontal portions. 
     
     
         9 . The heat dissipation device as claimed in  claim 8 , wherein the first, second and third fins are parallel to each other, and tops of the second and third fins are beneath the second horizontal portions. 
     
     
         10 . A heat dissipation device comprising:
 a heat sink having two grooves respectively defined in two flanks thereof;   a fan placed on the heat sink, the fan having a frame with a plurality of holes defined therein; and   two clips securing the fan on the heat sink, each clip comprising an engaging arm received in a corresponding groove of the heat sink, two tensile parts extending from two opposite ends of the engaging arm, two hooks formed at free ends of the tensile parts and inserted into corresponding ones of the holes of the fan, and a handle protruding from a middle of the engaging arm configured for facilitating a manipulation of each clip.   
     
     
         11 . The heat dissipation device as claimed in  claim 10 , wherein the heat sink comprises a base plate, two first fins extending from two flanks of the base plate, a first horizontal portion extending horizontally and outwardly from a top of each first fin, a first perpendicular portion extending upwardly from the first horizontal portion, a second horizontal portion extending horizontally and outwardly from a top of the first perpendicular portion, and a second perpendicular portion extending upwardly from the second horizontal portion, and wherein the grooves are defined in bottoms of the first horizontal portions. 
     
     
         12 . The heat dissipation device as claimed in  claim 11 , wherein the fan is located on the second horizontal portions and between the second perpendicular portions. 
     
     
         13 . The heat dissipation device as claimed in  claim 11 , wherein the heat sink further comprises a plurality of second fins extending from the base plate and between the first fins, and a plurality of third fins extending from the first horizontal portions. 
     
     
         14 . The heat dissipation device as claimed in  claim 10 , wherein the tensile parts are C-shaped and stretched to generate an elastic force to render the engaging arms and hooks respectively engaging with the heat sink and the fan to secure the fan on the heat sink.