Patent ID: 9016904
Filing Date: 2015-04-28
Classification: F21K,F21V

Abstract:
1. A LED lamp, comprising: a lamp base unit comprising an electrically insulative base, a mating connection device configured like the base of a conventional incandescent bulb and disposed at a bottom side of said electrically insulative base, an electrically insulative hollow column vertically upwardly extended from said electrically insulative base in axial alignment with said mating connection device, and accommodation chamber defined within said mating connection device and said electrically insulative hollow column; a heat sink comprising a plurality of radiation fins radially arranged together, a center insertion space surrounded by said radiation fins and coupled to said electrically insulative hollow column of said lamp base unit, and a recessed locating portion located at a top side of said radiation fins around said center insertion space; a light-emitting module comprising a heat transfer plate mounted at said recessed locating portion of said heat sink, a circuit board supported on said heat transfer plate, and at least one light-emitting device installed in said circuit board; wherein the accommodation chamber accommodates a power drive module, a through hole located at the topmost edge of said electrically insulative hollow column in communication with said accommodation chamber, and a plurality of longitudinal grooves spaced around the periphery of said electrically insulative hollow column.