Patent ID: 7647960
Filing Date: 2010-01-19
Classification: H01L

Abstract:
1. A heat dissipation device comprising: a base having a first face for contacting with an electronic device, a second face parallel the first face, and two sloped faces extending from the first face and toward each other, a plat extending from an end of the base and having a bottom surface coplanar with the first face, wherein the two sloped faces span between the first and second faces; a first fin set spanning on the base, comprising a plurality of first fins thermally contacting with the second face of the base and a plurality of passages defined between the first fins, each of the first fins also thermally contacting with the two sloped faces of the base; a second fin set arranged on the plat of the base, comprising a plurality of second fins and a plurality of passages defined between the second fins; and a fan located atop the first and second fin sets; wherein each of the first fins of the first fin set comprises a body defining a trapeziform cutout therein, the cutouts of the first fins of the first fin set corporately define a channel receiving the base therein; wherein the first fin set defines a concave opposite to the channel thereof and in a top thereof, the fan is received in the concave of the first fin set; and wherein each of the first fins of the first fin set has two first flanges extending from an edge of the body adjacent two ends thereof, and two second flanges extending from an opposite edge of the body adjacent two ends thereof, and wherein the concave is between the first flanges of the first fin set, and the channel is between the second flanges of the first fin set.