Cooling fan

Abstract

A cooling fan with high heat-dissipating performance includes a plurality of blades; and a frame for receiving the blades therein, wherein the frame has a reduced height for exposing the blades to outside of the frame so as to allow air to enter into the frame via a top portion and a peripheral portion of the blades to improve air introduction and heat dissipating efficiency of the cooling fan. A cover may be mounted to a top surface of the frame, and formed with a plurality of openings for allowing air to enter into the frame through the openings; such an arrangement cam effectively enhance air intake and working efficiency of the cooling fan.

1 . A cooling fan, comprising:
 a plurality of blades;   a frame for receiving the blades; and   a cover formed on the frame, and comprising at least one side plate, wherein the at least one side plate is formed with a plurality of bars such that at least one lateral air intake is formed between the bars;   wherein the plurality of bars are biased by an angle to direct air into the cover, and the frame and the cover are formed as a single piece.   
     
     
         2 . The cooling fan of  claim 1 , wherein the cover further comprises a top portion being formed with a plurality of bars and openings in a manner that adjacent openings are spaced by one of the bars. 
     
     
         3 . The cooling fan of  claim 2 , wherein top surfaces of the bars of the top portion are biased by a predetermined angle, with respect to the top portion of the cover, and not perpendicular to the top portion. 
     
     
         4 . The cooling fan of  claim 1 , wherein the cover further comprises a top portion, and the at least one side plate is extended from at least one peripheral edge of the top portion and bent vertically downwards. 
     
     
         5 . The cooling fan of  claim 1 , wherein the frame and the cover are integrally formed through injection molding. 
     
     
         6 . The cooling fan of  claim 1 , wherein the frame further includes a plurality of ribs formed on a bottom portion of the frame for supporting the blades and strengthening the cooling fan. 
     
     
         7 . A cooling fan, comprising:
 a plurality of blades; and   a molded housing for receiving the blade therein, comprising:   a plurality of bars formed on at least one side portion of the molded housing such that at least one lateral air intake is formed between the bars, wherein the plurality of bars are biased by an angle to direct air to flow into the molded housing.   
     
     
         8 . The cooling fan of  claim 7 , wherein the molded housing further comprises a top portion being formed with a plurality of bars and openings in a manner that adjacent openings are spaced by one of the bars. 
     
     
         9 . The cooling fan of  claim 8 , wherein top surfaces of the bars of the top portion are biased by a predetermined angle with respect to the top portion of the molded housing, and not perpendicular to the top portion. 
     
     
         10 . The cooling fan of  claim 7 , wherein the molded housing further comprises a top portion, and the at least one side portion is extended from at least one peripheral edge of the top portion and bent vertically downwards. 
     
     
         11 . The cooling fan of  claim 7 , wherein the molded housing is formed through injection molding. 
     
     
         12 . The cooling fan of  claim 7 , wherein the molded housing further includes a plurality of ribs formed on a bottom portion of the molded housing for supporting the blades and strengthening the cooling fan.