Heat dissipation device including dust mask

Abstract

A heat dissipation device includes a computer enclosure having a panel, a heat sink installed in the computer enclosure, a fan mounted on the heat sink, a duct and a dust mask. The panel defines an air intake therein. The duct includes a first end portion mounted onto the fan and a second end portion connected to the air intake of the panel so that a sealed access is provided for air straightly flowing from the air intake to the heat sink. The dust mask is removably mounted on the panel and covers the air intake for hindering dust particles from entering the computer enclosure.

1 . A heat dissipation device, comprising: 
 a panel of a computer enclosure defining an air intake;    a heat sink installed in the computer enclosure;    a fan mounted on the heat sink;    a duct comprising a first end portion mounted onto the fan and a second end portion connected to the air intake of the panel;    a dust mask mounted on the panel and covering the air intake.    
   
   
       2 . The heat dissipation device as claimed in  claim 1 , wherein a concave flange is formed at the panel at a periphery of the air intake, and wherein the dust mask is slidable on the concave flange.  
   
   
       3 . The heat dissipation device as claimed in  claim 2 , wherein a pair of locking ears is further formed from the flange and extended toward each other.  
   
   
       4 . The heat dissipation device as claimed in  claim 3 , wherein each of the locking ears defines a locking hole therein.  
   
   
       5 . The heat dissipation device as claimed in  claim 4 , wherein the dust mask forms inward spring hooks corresponding to the locking holes and being capable of sliding in and out of the locking holes.  
   
   
       6 . The heat dissipation device as claimed in  claim 1 , wherein the dust mask forms at least one outward rib for facilitating to install the dust mask to the panel or remove the dust mask from the panel.  
   
   
       7 . The heat dissipation device as claimed in  claim 1 , wherein the dust mask comprises a mesh portion for filtering dust particles.  
   
   
       8 . The heat dissipation device as claimed in  claim 1 , wherein the dust mask is detachable from the panel.  
   
   
       9 . A heat dissipation device comprising: 
 a computer enclosure defining an air intake;    a heat dissipation portion mounted within the computer enclosure;    an air driving portion mounted on the heat dissipation portion for driving air to the heat dissipation portion;    an airflow guiding portion between the air driving portion and the air intake to guide air flow from the air intake to the air driving portion; and    a dust particle filtering portion detachably mounted at an exterior of the computer enclosure and covering the air intake, to filter dust particles contained in air before the air enters the computer enclosure.    
   
   
       10 . The heat dissipation device as claimed in  claim 9 , wherein at least one rib is formed at the filtering portion for facilitating to install the filtering portion to the computer enclosure or remove the filtering portion from the computer enclosure.  
   
   
       11 . The heat dissipation device as claimed in  claim 9 , wherein a concave flange is formed at the computer enclosure at a periphery of the air intake, and wherein the filtering portion is slidable on the concave flange.  
   
   
       12 . The heat dissipation device as claimed in  claim 9 , wherein an interlocking portion is formed between the computer enclosure and the filtering portion to lock the filtering portion to the computer enclosure.  
   
   
       13 . The heat dissipation device as claimed in  claim 12 , wherein the interlocking portion comprises a spring hook formed on the filtering portion and a locking ear formed on the computer enclosure and defining a locking hole therein, and wherein spring hook is capable of sliding in the locking hole to lock the filtering portion to the computer enclosure and sliding out of the locking hole to detach the filtering portion from the computer enclosure.  
   
   
       14 . A computer system comprising: 
 a computer enclosure having a panel defining an air intake;    a heat sink received in the computer enclosure and adapted for thermally contacting with a heat-generating electronic component;    a fan mounted on the heat sink;    a duct having a first end located proximate to the fan and a second end opposite the first end, the second end being attached to the panel and surrounding the air intake; and    a dust mask removably mounted on the panel and having a dust filtering portion covering the air intake.    
   
   
       15 . The computer system of  claim 14 , wherein the air intake extends through an edge of the panel.  
   
   
       16 . The computer system of  claim 15 , wherein the panel forms a concave flange at a periphery of the air intake, and the dust mask is slidably mounted on the concave flange.  
   
   
       17 . The computer system of  claim 16 , wherein the panel includes a pair of ears extending from opposite sides of the flange, the dust mask includes two spring hooks engaging with the ears, respectively.  
   
   
       18 . The computer system of  claim 17 , wherein the dust mask has a mesh portion surrounded by the second end of the duct.  
   
   
       19 . The computer system of  claim 18 , wherein the dust mask forms a hem located adjacent to the through edge of the air intake, and a plurality of ribs formed on an outside of the dust mask and located near the hem.  
   
   
       20 . The computer system of  claim 14 , wherein the dust mask has a plurality of spring hooks engaging in the panel.