Patent ID: 6773154
Filing Date: 2004-08-10
Classification: B60Q,F21K,F21S,F21V,Y10S

Abstract:
A lighting device comprising:a light guide having a first surface and a second surface; a light source comprising a single Light Emitting Semiconductor Device (LESD), the single LESD coupled to the light guide to radiate light through the first surface; a control circuit arranged within the light guide, the control circuit electrically coupled to the single LESD to control operation of the single LESD; a back plate coupled to the light guide forming an air channel between the light guide and the back plate, the air channel dissipating heat generated by the single LESD and the control circuit; and a heat collector coupled to the light guide, the heat collector operable to dissipate heat generated by the single LESD and the control circuit.