Heat dissipation device and heat dissipation fins thereof

Abstract

A heat dissipation device for being in thermal contact with a heat source includes multiple heat dissipation fins, a heat pipe and a fan. Each of the heat dissipation fins includes a plate and an air guiding body. The plate has a thermal contact side used for being in thermal contact with the heat source. An acute angle is formed between an extension side of the air guiding body and the thermal contact side. The heat pipe penetrates through the plates. The fan used for forming an air current is installed at a side of the heat dissipation fin opposite to the thermal contact side. The air guiding body and the heat pipe are disposed in a flowing path of the air current. Thereby, the air current is guided toward the heat pipe and the amount of air flowing through the heat pipe is increased.

What is claimed is: 
     
         1 . A heat dissipation device configured for being in thermal contact with a heat source, the heat dissipation device comprising:
 a plurality of heat dissipation fins, each of some of the heat dissipation fins comprising a plate and an air guiding body, the plate having an air outlet side configured for being in thermal contact with the heat source, the air guiding body being protruded from the plate, an acute angle being formed between an extension side of the air guiding body and a surface of the air outlet side;   a heat pipe penetrating through the plates and the heat pipe being kept away from the air guiding body at a distance; and   a fan installed at a side of the heat dissipation fins opposite to the air outlet side, the fan being configured for forming an air current, and the air guiding body as well as the heat pipe being disposed in a flowing path of the air current to guide the air current toward the heat pipe and to increase an amount of air flowing through the heat pipe.   
     
     
         2 . The heat dissipation device as claimed in  claim 1 , wherein the acute angle is between 15 and 75 degrees. 
     
     
         3 . The heat dissipation device as claimed in  claim 1 , wherein the plate has an air inlet side and a side edge, the air current flows from the air inlet side toward the air outlet side, the side edge is connected with the air inlet side and the air outlet side, the air guiding body has a first end and a second end disposed oppositely to each other, the first end is close to the air inlet side, the second end is close to the air outlet side, the heat pipe is disposed between the side edge and the air guiding body, a distance between the first end of the air guiding body and the side edge is larger than that between the second end of the air guiding body and the side edge. 
     
     
         4 . The heat dissipation device as claimed in  claim 1 , wherein the plate has an air inlet side and a side edge, the air current flows from the air inlet side toward the air outlet side, the side edge is connected with the air inlet side and the air outlet side, the air guiding body has a first end and a second end disposed oppositely to each other, the first end is close to the air inlet side, the second end is close to the air outlet side, the air guiding body is disposed between the side edge and the heat pipe, a distance between the first end of the air guiding body and the side edge is shorter than that between the second end of the air guiding body and the side edge. 
     
     
         5 . The heat dissipation device as claimed in  claim 1 , wherein a connection line between a center of the air guiding body and a center of the heat pipe intersects with a flowing direction of the air current. 
     
     
         6 . A heat dissipation fin configured for installing a fan and a heat pipe, the fan producing an air current, the heat dissipation fin comprising:
 a plate having a through hole configured for accommodating the heat pipe, the heat pipe being in thermal contact with the plate, the plate having an air outlet side; and   an air guiding body protruded from the plate, the air guiding body being disposed in a flowing path of the air current, and an acute angle being disposed between an extension side of the air guiding body as well as a surface of the air outlet side in order to guide the air current toward the heat pipe and to increase an amount of air flowing through the heat pipe.   
     
     
         7 . The heat dissipation fin as claimed in  claim 6 , wherein the acute angle is between 15 and 75 degrees. 
     
     
         8 . The heat dissipation fin as claimed in  claim 6 , wherein the plate has an air inlet side and a side edge, the air current flows from the air inlet side toward the air outlet side, the side edge is connected with the air inlet side and the air outlet side, the air guiding body has a first end and a second end disposed oppositely to each other, the first end is close to the air inlet side, the second end is close to the air outlet side, the heat pipe is disposed between the side edge and the air guiding body, a distance between the first end of the air guiding body and the side edge is longer than that between the second end of the air guiding body and the side edge. 
     
     
         9 . The heat dissipation fin as claimed in  claim 6 , wherein the plate has an air inlet side and a side edge, the air current flows from the air inlet side toward the air outlet side, the side edge is connected with the air inlet side and the air outlet side, the air guiding body has a first end and a second end disposed oppositely to each other, the first end is close to the air inlet side, the second end is close to the air outlet side, the air guiding body is disposed between the side edge and the heat pipe, a distance between the first end of the air guiding body and the side edge is shorter than that between the second end of the air guiding body and the side edge.