Patent ID: 7794114
Filing Date: 2010-09-14
Classification: F21S,F21V,F21Y,F28F

Abstract:
1. Solid state room lighting fixture comprising: a thermally conductive reflector having a planar portion flush mountable on a ceiling of a room; a solid state light source mounted on the planar portion relative to the reflective surface whereby the reflective surface reflects light from the solid state light source downwardly; a thermally anisotropic heat spreader preferentially conducting heat in an x-y plane parallel the planar portion as opposed to in a z-direction perpendicular to the x-y plane, the x-y plane of the thermally anisotropic heat spreader in thermal contact with the solid state light source and in thermal and physical contact over part of the planar portion of the thermally conductive reflector of the lighting fixture so as to spread heat from the solid state light source preferentially in a direction parallel to the planar portion of said thermally conductive reflector thereby making said thermally conductive reflector and the thermally anisotropic heat spreader collectively a more effective combined heat sink for the solid state light source by spreading heat from the solid state light source to a wider area of the thermally conductive reflector.