Patent ID: 6580228
Filing Date: 2003-06-17
Classification: F21K,F21V,F21Y,H01L,Y10S

Abstract:
A lamp for use in a conventional line current powered incandescent lamp socket, for providing area or task lighting, comprising:(a) a base that is adapted to electrically and mechanically engage a conventional line current powered incandescent lamp socket, to receive an alternating current (AC) via electrical terminals disposed on the base; (b) a power supply electrically connected to the electrical terminals on the base, said power supply receiving the AC and providing an output electrical current; (c) a flexible substrate strand on which are disposed a plurality of electrical conductors, said flexible substrate strand having one end disposed adjacent to the base, said plurality of electrical conductors being electrically connected to the output of the power supply; (d) a plurality of solid-state light sources mounted on an outer surface of the flexible substrate strand in a spaced-apart array that is configured so that light emitted by the plurality of solid-state light sources when they are electrically energized by the electrical current radiates outwardly about an entire circumference of the lamp, each of said plurality of solid-state light sources being electrically connected to the plurality of electrical conductors disposed on the flexible substrate strand, enabling the plurality of solid-state light sources to be energized by the electrical current produced by the power supply; and (e) a light transmissive envelope having an end attached to the base, said envelope enclosing the flexible substrate strand and the plurality of solid-state light sources, providing protection to the plurality of solid-state light sources, while transmitting the light emitted by the plurality of solid-state light sources generally radially outward from the lamp.