LED LIGHT SOURCE DEVICE AND PROJECTOR

摘要

[Problem] To provide an LED light source device having a flux distribution angle of 30° or less and having exceptional luminous flux distribution and directionality, and to provide a desktop projector provided with said LED light source device. [Solution] Provided is an LED light source device provided with: a mounting substrate of which at least the surface is metal; a first insulation layer formed on the surface of the mounting substrate; a wiring layer formed as the upper layer of the first insulation layer; and a plurality of LED chips having identical specifications, the LED chips being surface-mounted in a matrix on the mounting substrate, wherein the LED light source is characterized in: being provided with a reflector block that has microreflectors in a quantity identical to that of the LED chips; the microreflectors having bottom openings and upper openings that are larger in diameter than the bottom openings; and the wiring layer being configured from a first electroconductive layer formed by applying a metal paste that contains a penetration-curing resin and a metal powder to the insulation layer and heating the paste, and a second electroconductive layer formed on the upper surface of the first electroconductive layer and endowed with a lower resistance than that of the first electroconductive layer. Also provided is a projector provided with said LED light source device.