Heat sink module and omnidirectional LED lamp holder assembly using same

摘要

An omnidirectional LED lamp holder assembly includes a heat sink module including a heat sink base and radiation fins around the heat sink base, a lampshade and an electrical connector respectively mounted at opposing top and bottom sides of the heat sink module. The heat sink base is a one-piece extruded member defining a tubular heat-transfer base portion, a broad platform and a hollow protruding mount for holding LED chips at different angles. The broad platform horizontally protrudes over the periphery of the tubular heat-transfer base portion, providing a bearing face. The radiation fins are fastened to respective mounting grooves around the periphery of the tubular heat-transfer base portion. Waste heat produced during operation of the LED chips can be rapidly transferred by the hollow protruding mount to the broad platform and the heat-transfer base portion and then dissipated by the radiation fin into the outside open air.

主权项

1. An omnidirectional LED lamp holder assembly, comprising a heat sink module comprising a heat sink base and a plurality of radiation fins mounted around said heat sink base, a lampshade mounted at a top side of said heat sink module, and an electrical connector mounted at a bottom side of said heat sink module opposite to said lampshade, wherein: said heat sink base is a one-piece extruded member comprising a tubular heat-transfer base portion, a broad platform and a hollow protruding mount for the mounting of LED chip, said broad platform being integrally connected to one end of said tubular heat-transfer base portion and defining a bearing face that protrudes horizontally over the periphery of said tubular heat-transfer base portion, said hollow protruding mount being integrally connected to and upwardly extended from a center area of a top wall of said broad platform, said hollow protruding mount comprising a horizontal top wall and a plurality of upright sidewalls connected between the periphery of said horizontal top wall and said broad platform at different angles and defining with said horizontal top wall a cavity, said tubular heat-transfer base portion defining therein a tubular chamber disposed in communication with said cavity and a plurality of longitudinal mounting grooves equally spaced around the periphery thereof; said radiation fins are respectively and radially fastened to said longitudinal mounting grooves of said tubular heat-transfer base portion, and wherein:said broad platform comprises an annular retaining groove extending around the periphery thereof, said lampshade comprises an annular mounting rib protruding from an inside wall thereof and engaged into said annular retaining groove of said broad platform; andsaid longitudinal mounting grooves of said tubular heat-transfer base portion are simultaneously formed on the periphery of said tubular heat-transfer base portion upon extrusion of said heat sink base to form said tubular heat-transfer base portion, said broad platform and said hollow protruding mount all in one piece.