Patent ID: 6135200
Filing Date: 2000-10-24
Classification: H01L

Abstract:
A cooling unit for cooling a heat generating element, comprising:a substrate to which the heat generating element is to be fixed;an axial fan for blowing air toward the substrate in a direction approximately perpendicular to a surface of the substrate, the axial fan having a boss part and a plurality of blades disposed around the boss part, the boss part being opposed to a specific point of the substrate; anda cooling fin disposed between the substrate and the axial fan and having a plurality of louvers,wherein the substrate is divided into even substrate areas around the specific point in a rotating direction of the axial fan, the substrate areas each having a reference line that radially extends from the specific point; andwherein each of the plurality of louvers faces one of the substrate areas and extends in a direction parallel to the reference line of the one of the substrate areas, for changing an air flow direction of the air blown from the axial fan to said direction parallel to the reference line.