Patent ID: 7288796
Filing Date: 2007-10-30
Classification: F21K,F21S,F21V,F21Y

Abstract:
1. A light source comprising: an elongate thermally conductive channel; a surface proximate said channel and thermally coupled to said channel a plurality of light emitting diodes (LED's) carried on said surface, at least some of said light emitting diodes being disposed in a first plane and others of said light emitting diodes being disposed in a second plane not coextensive with said first plane; said elongate thermally conductive channel being configured to conduct heat away from said light emitting diodes to fluid contained by said elongate thermally conductive channel; temperature sensing apparatus providing signals representative of the temperature of said light emitting diodes; and a controller coupled to said LED's and to said temperature sensing apparatus for controlling the temperature of said LED's dependent upon predetermined temperatures.