Patent ID: 7789661
Filing Date: 2010-09-07
Classification: A61C,A61N,H01L,H05K

Abstract:
1. A light emitting diode lighting device comprising: a) a substrate composed of a material capable of efficiently conducting heat, said substrate including a first substrate portion being electrically conductive and thermally conductive and a second substrate portion thermally connected to the first substrate portion, said second substrate portion being thermally conductive and electrically insulating, said substrate having a top and a bottom; b) one or more light emitting diodes, said one or more light emitting diodes being capable of emitting light when supplied with adequate electrical current, said one or more light emitting diodes have a bottom surface which is electrically conductive and is configured as a heat transfer surface, said bottom surface of said one or more light emitting diodes being firmly mounted on said first substrate portion, said one or more light emitting diodes being in thermal communication with said substrate so that heat produced by said one or more light emitting diodes is conducted away from said one or more light emitting diodes through the substrate; c) electrical wiring configured to provide electrical current to said one or more light emitting diodes in order to provide power thereto and cause the one or more light emitting diodes to emit light; d) a heat pipe capable of efficiently conducting heat from one location to another, said heat pipe having a first end and a second end, the first end of the heat pipe being firmly mounted against the bottom of said second substrate portion in order to transfer heat from said substrate to the second end of the heat pipe; e) control circuitry capable of controlling electrical current transmission to said one or more light emitting diodes in order to control light production by said one or more light emitting diodes; and f) a layer of conductive material separated from said first substrate portion by an electrically insulating material, said layer of conductive material coupled to an anode of at least one of said one or more light emitting diodes, wherein said layer of conductive material includes a plurality of regions which are electrically isolated from one another, and wherein one of the plurality of regions is coupled to an anode of each of the at least one of the one or more light emitting diodes, respectively.