Patent ID: 6421239
Filing Date: 2002-07-16
Classification: H01L

Abstract:
An integral heat dissipating device for a heat generating element comprising:(a) an integrally formed radiating plate including: a heat dissipating channel portion defining a plurality of air grids and having an outer wall; a fan blade receiving chamber portion disposed in open communication with said heat dissipating channel portion, said fan blade receiving chamber portion having a lateral wall formed about a bottom surface, said bottom surface having formed therein an axial hole, said lateral wall having an inclined upper side to define a sectionally inclined air opening; a heat conductive plate portion extending from said outer wall of said heat dissipating channel portion for at least partially overlaying the heat generating element, said heat conductive plate portion having a plurality of screw retaining posts projecting from respective laterally extended parts thereof; and, at least one plate shaped heat pipe portion disposed between said heat conductive plate and heat dissipating channel portions; (b) a heat conductive glue applied to said heat conductive plate portion of said radiating plate for adhesively joining said heat conductive plate portion to the heat generating element; (c) a fan blade assembly disposed in said fan blade receiving chamber portion of said radiating plate, said fan blade assembly including a stator coil, a rotor coil, and a spindle extending through said axial hole; and, (d) a cover coupled to said radiating plate, said cover having substantially a thin plate configuration, said cover including a first portion extending over and enclosing an upper part of said heat dissipating channel portion, and a second portion extending over said fan blade receiving chamber portion, said second portion having at least one hole formed therein to define an air inlet; wherein heat generated by the heat generating element is transferred through said heat conductive glue and said radiating plate, said fan blade assembly being operable to expel the transferred heat out through said heat dissipating channel portion of said radiating plate.