Patent ID: 8385071
Filing Date: 2013-02-26
Classification: F28F,H01L

Abstract:
1. A heat radiator in the form of a rectangular body having two opposite longer sides and two opposite shorter sides, consisting of: a contact section being located at a central portion of an end surface of the heat radiator for contacting with a heat source, and having a plurality of radially spaced extension walls extended outward from an outer periphery of the contact section; a first heat-dissipating zone defined by said radially spaced extension walls consisting of a plurality of separate horizontally curved radiation fins radially distributed and extending outward only from the outer periphery of the contact section in a manner such that gaps between said curved fins increase outwardly from the outer periphery of the contact section toward the two longer sides of the heat radiator; the curved radiation fins having a first curved portion extending toward a second curved portion; the directions of the first curved portion being opposed to the directions of the second curved portion thereby forming an S-shape; wherein the S-shapes formed on the two longer sides increase the surface area and are oppositely configured such that the resulting outward air flow is directed in different directions; and a second heat-dissipating zone defined by said radially spaced extension walls and consisting of a plurality of radiation fins radially distributed and extended outward from the outer periphery of the contact section and a plurality of radiation fins extended outward from one surface of the radially spaced extension walls which together define the second heat-dissipating zone as directed toward the two shorter sides of the heat radiator whereby heat generated by the heat source is transferred via the central contact section to both the first and second heat-dissipating zones and dissipates into surrounding air from the radiation fins.