Heat dissipation device

Abstract

A heat dissipation device is provided. The heat dissipation device is applied to an electronic device with a first heat source and a second heat source. The heat dissipation device includes a housing, an impeller, a first heat conductive assembly, a second heat conductive assembly and an switch. The housing includes an accommodating space, a first outlet and a second outlet. The first outlet and the second outlet are connected to and through the accommodating space. The impeller is disposed in the accommodating space. The first heat conductive assembly is connected to the first outlet and the first heat source. The second heat conductive assembly is connected to the second outlet and the second heat source. The switch is disposed at the first outlet to open or dose the first outlet.

What is claimed is: 
     
         1 . A heat dissipation device, applied to an electronic device with a first heat source and a second heat source, the heat dissipation device comprising:
 a housing including an accommodating, space, a first outlet and a second outlet, wherein the first outlet and the second outlet are connected to and through the accommodating space;   an impeller disposed in the accommodating space;   a first heat conductive assembly connected to the first outlet and the first heat source   a second heat conductive assembly connected to the second outlet and the second heat source; and   an switch disposed at the first outlet to open or close the first outlet:   
     
     
         2 . The heat dissipation device according to claim I, wherein the switch includes:
 a wind deflector movably disposed at the first outlet:   
     
     
         3 . The heat dissipation device according to  claim 2 , wherein the switch further includes:
 control element connected to the wind deflector,   
     
     
         4 . The heat dissipation device according to  claim 3 , wherein the housing includes a positioning slot and a through hole, two opposite ends of the wind deflector include rotating shafts, respectively, one of the two rotating shafts is coupled to the positioning slot, and the other one of the two rotating shaft is coupled to the through hole and connected to the control element. 
     
     
         5 . The heat dissipation device according to  claim 2 , wherein the angle between the wind deflector and the open direction of the first outlet is 0 to 90 degrees. 
     
     
         6 . The heat dissipation device according to  claim 2 , wherein one end of the wind deflector is connected to the housing, and the switch further includes:
 an electromagnet located in a distance from the other end of the wind deflector, when the electromagnet is energized, the wind deflector moves towards the electromagnet to close the first outlet.   
     
     
         7 . The heat dissipation device according to  claim 6 , wherein the housing further includes:
 a stopper disposed between the impeller and the wind deflector, when the electromagnet, is not energized, the wind deflector leans against the stopper to open the first outlet.   
     
     
         8 . The heat dissipation device according to  claim 6 , wherein the wind deflector is curved, flexible metal sheet, and the length of the wind deflector is greater than the length of the first outlet. 
     
     
         9 . The heat dissipation device according to  claim 1 , further comprising:
 a temperature sensor electronically connected to the switch to sense the temperature of the first heat source and the second heat source.   
     
     
         10 . The heat dissipation device according to  claim 1 , Wherein the first heat conductive assembly includes a first cooling fin and a first heat pipe, and the first cooling fin is disposed at the first outlet, the first heat pipe is connected between the first cooling fin and the first heat source; the second heat conductive assembly includes a second cooling fin and a second heat pipe, and the second cooling fin is disposed at the second outlet, the second heat pipe is connected between the second cooling fin and the second heat source.