Patent ID: 9103521
Filing Date: 2015-08-11
Classification: B60Q,F21S,F21V,F21Y,H05B

Abstract:
1. A lighting apparatus, comprising: a drive section which applies electric current to a light source which is a semiconductor element emitting light with application of electric current; at least one heat sink which is mounted with the light source and transfers heat generated by the emission of the light source; and a temperature measurement section which is mounted to the heat sink and measures temperature of the heat sink which is used for estimating temperature of the light source, wherein the light source and the drive section are mounted to the same heat sink or to the heat sinks which are thermally coupled to each other; and at relative positions of the temperature measurement section, the light source, and a heat generating portion in the drive section, influence of heat received by the temperature measurement section from the light sources is larger than influence of heat received by the temperature measurement section from the heat generating portion in the drive section.