Detachable guide air hood

Abstract

A detachable guide air hood, which fits with a fan frame for enhancing heat dissipation, includes a hollow guide air bucket, a fitting part and at least a pair of holding hooks. The hollow guide air bucket provides a large opening and a small opening with two opposite first inclined side walls and two opposite second inclined side walls having a shape of convergence from the large opening to the small opening. The fitting part is disposed at the small opening and provides two opposite first parallel side walls and two opposite second parallel side walls. The parallel side walls are joined to the guide air bucket. The holding hooks are disposed at the joint of the guide air bucket and the fitting part and an end of the respective holding hook is connected to the guide air bucket.

1 . A detachable guide air hood, which fits with a fan frame for enhancing heat dissipation, comprising:
 a hollow guide air bucket providing a large opening and a small opening with two opposite first inclined side walls and two opposite second inclined side walls having a shape of convergence from the large opening to the small opening;   a fitting part being disposed at the small opening, providing two opposite first parallel side walls and two opposite second parallel side walls, which are joined to the guide air bucket; and   at least a pair of L-shaped holding hooks being disposed at an intersection of the guide air bucket and the fitting part with an end of the respective holding hook being connected to the guide air bucket.   
   
   
       2 . The detachable guide air hood as defined in  claim 1 , wherein the first and second parallel side walls perpendicularly extend a stop plate at the inner sides thereof at the intersection. 
   
   
       3 . The detachable guide air hood as defined in  claim 1 , wherein the fitting part has a locating recess at four corners thereof corresponding four corners of the fan frame. 
   
   
       4 . The detachable guide air hood as defined in  claim 1 , wherein the holding hooks are joined to one of the first inclined side walls and one of the second inclined side wall such that the holding hooks are diagonally adjacent to each other. 
   
   
       5 . The detachable guide air hood as defined in  claim 1 , wherein the fitting part has a cross section of rectangle.