Thermal management system for solid state automotive lighting

F - Mech Eng,Light,Heat,Weapons – 21 – V

Patent

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F21V 29/00 (2006.01)

Patent

CA 2580114

An automotive lighting system employing semiconductor light sources includes LED light sources (52) which are mounted to an edge of a heat pipe (44) such that emitted light from the LED light sources travels toward a reflector (32) at the back of the housing (24) of the system, where it is reflected and/or focused forward through the lens (40) of the system. The heat pipe is thermally connected to a heat sink (35) which extends outside of the housing and which operates to remove heat from the LED light sources. The thickness of the heat pipe is significantly less than the size of the reflector, so that only a small amount of reflected light from the LED light sources is obscured.

L'invention concerne un système d'éclairage pour automobiles utilisant des sources lumineuses à semi-conducteurs, y compris des sources (52) lumineuses à DEL qui sont montées sur un bord de caloduc (44), de sorte que la lumière émise par les sources lumineuses à DEL se déplace en direction d'un réflecteur (32) situé à l'arrière du corps (24) du système, où elle est réfléchie et/ou concentrée vers l'avant, par la lentille (40) du système. Le caloduc est relié thermiquement à un dissipateur thermique (35) qui se déploie vers l'extérieur du corps et sert à éliminer la chaleur provenant des sources lumineuses à DEL. Le caloduc présentant une épaisseur considérablement inférieure à la taille du réflecteur, seule une petite quantité de la lumière réfléchie par les sources lumineuses à DEL est masquée.

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