Patent ID: 9366424
Filing Date: 2016-06-14
CPC Classification: F21K,F21V,F21Y,G02F

Claim Text:
1. A light source device, comprising: a substrate having a front surface on which a plurality of light-emitting diodes are mounted; and a case having a bottom plate that holds said substrate, the case further having four side walls constituting an outer frame that is perpendicular to the bottom plate, wherein a driver circuit for driving said light-emitting diodes is mounted on a rear surface of said substrate that is opposite to the front surface thereof, wherein, for each of the light-emitting diodes, an opening corresponding to a size of said light-emitting diode is formed in the bottom plate of said case, wherein the front surface of said substrate is fixed to a rear surface of the bottom plate of said case from outside of said case with said light-emitting diode fitted in said opening, wherein a coating material with an emissivity of equal to or higher than 0.9 and equal to or lower than 1.0 is applied to an outer surface of the four side walls of said case, and wherein said driver circuit is mounted on the rear surface of said substrate in a position, in a plan view, corresponding to an area between adjacent ones of the light-emitting diodes that are mounted on the front surface of the substrate so that said driver circuit is positioned where said light-emitting diodes are absent in the plan view.