Patent ID: 6301110
Filing Date: 2001-10-09
Classification: H01L

Abstract:
An electronic component cooling apparatus comprising:a heat sink including a base and a pair of side walls arranged so as to be raised from a pair of ends of said base opposite to each other;said base having a rear surface mounted thereon with an electronic component to be cooled and a front surface provided thereon with a plurality of radiation fins;said radiation fins being positioned between said side walls of said heat sink; andan axial fan unit including an impeller provided with a plurality of blades, a motor including a revolving shaft fixedly mounted thereon with a rotor on which said impeller is mounted and acting to rotate said impeller, a casing provided with an opening for receiving said impeller and motor therein, and a plurality of webs for connecting a housing of said motor and said casing to each other so as to position said motor at a central portion of said opening;said axial fan unit forcibly guiding air in an axial direction of said revolving shaft;said radiation fins of said heat sink being arranged in a manner to be parallel to said side walls of said heat sink and spaced from each other at predetermined intervals;said heat sink having a plurality of parting slits formed therein, said parting slits being spaced from each other at predetermined intervals and extending continuously from an outside of at least one of said side walls of said heat sink into said heat sink to interrupt continuity of a part of said base, said at least one side wall of said heat sink and said radiation fins adjacent to said side walls of said heat sink:said parting slits being arranged so as not to interrupt continuity of a portion of said radiation fins, wherein said uninterrupted portion of said radiation fins faces said impeller and is not exposed directly to air flow generated by rotation of said blades of said impeller.