Cooling device for vehicle headlights

摘要

A cooling device for cooling an LED of vehicle headlight without restricting a design of a housing is provided. The cooling device is comprised of an LED held in a housing sealed with a lens, a reflector that reflects a light emitted from the light source, a heat collector on which the LED is mounted, a heat sink disposed behind the reflector, and a pair of heat pipes thermally connecting the heat collector and the heat sink. The heat sink is arranged inside of the housing.

主权项

1. A cooling device for vehicle headlights, comprising:
an LED light source held in a housing sealed with a lens; a reflector that reflects a light emitted from the LED light source; a heat sink that is disposed behind the reflector; a heat pipe that transports heat generated by the LED light source to the heat sink by a working fluid encapsulated therein; a flat cuboid vapor chamber that serves as a heat collector on which the LED light source is mounted; wherein the heat sink is comprised of a base covering the reflector from behind and above while keeping a distance therebetween, and a plurality of fins erected vertically to extend from the base in the opposite side of the reflector; wherein a surface area of lower section of the fin is smaller than that of an upper section; wherein the heat pipe includes
a first heat pipe in which one of end portions is flattened to be contacted with a front long side of the vapor chamber, and the other end portion penetrates through the upper section of the fin while being contacted therewith, anda second heat pipe in which one of end portions is flattened to be contacted with a rear long side of the vapor chamber, and the other end portion penetrates through the upper section of the fin while being contacted therewith; and wherein the reflector is isolated from the vapor chamber and the heat pipes.