초록 ▼

A heat sink-equipped cooling apparatus capable of exhibiting increased cooling performance and durability and being reduced in dimensions in a radial direction thereof. A heat sink includes a radiation fin unit including a plurality of radiation fins arranged so as to surround a virtual central line

A heat sink-equipped cooling apparatus capable of exhibiting increased cooling performance and durability and being reduced in dimensions in a radial direction thereof. A heat sink includes a radiation fin unit including a plurality of radiation fins arranged so as to surround a virtual central line while keeping a center thereof aligned with the central line. A cooling fan includes an impeller including a plurality of blades and rotated through a motor. The cooling fan is mounted on the heat sink in such a manner that the impeller is positioned above the radiation fin unit of the heat sink. The radiation fins each are inclined with respect to a virtual vertical plane so as to form a predetermined inclination angle .theta. therebetween. The inner edges of the radiation fins are connected in a manner to be heat-transferable or in a manner that a thermally conductive passage is formed between the inner edges.

대표청구항 ▼

1. A cooling apparatus comprising:a heat sink for dissipating heat generated from a heat source; said heat sink including a base plate increased in thermal conductivity and including a front surface and a rear surface with which the heat source is contacted, a virtual central line defined so as to e

1. A cooling apparatus comprising:a heat sink for dissipating heat generated from a heat source; said heat sink including a base plate increased in thermal conductivity and including a front surface and a rear surface with which the heat source is contacted, a virtual central line defined so as to extend in a direction perpendicular to said front surface of said base plate, a plurality of virtual vertical planes defined so as to extend in both a radial direction from said central line and a vertical direction perpendicular to said front surface of said base plate and be spaced from each other at equal intervals in a circumferential direction of a virtual circle defined about said central line, and a radiation fin unit mounted on said front surface of said base plate in a manner to be heat-transferable and including a plurality of radiation fins arranged so as to surround said central line while aligning said central line with a center in arrangement of said radiation fins; and a cooling fan including an impeller which includes a plurality of blades and is rotated by a motor and mounted on said heat sink so that said impeller is positioned above said radiation fin unit; said radiation fins each including a lower edge positioned on a side of said base plate, an upper edge positioned opposite to the lower edge, an inner edge connecting the lower edge and the upper edge and positioned on the side of the center line, and an outer edge connecting the lower edge and the upper edge and positioned opposite to the inner edge, and a radiation surface positioned between said lower edge and said upper edge; said radiation fins each being fixedly mounted on said front surface of said base plate so as to be positioned on an intersection line between said virtual vertical plane corresponding to each of said lower edges and said front surface of said base plate; said radiation fins each being arranged while being inclined in an identical direction with respect to said virtual vertical plane so that an inclination angle .theta. of predetermined degrees between said radiation surface of said radiation fin and said virtual vertical plane may be defined; said inner edges of each two adjacent radiation fins are joined with each other in a manner to be heat-transferable; said radiation fin unit and cooling fan being arranged in positional relationship which permits each of said blades of said cooling fan and said upper edge of each of said radiation fins to be opposite to each other; said cooling fan being arranged so as to permit cooling air to be fed to said radiation fins of said radiation fin unit.