To provide an LED light-emitting unit of high reliability with LED elements as a light-emitting source, with its irradiation light having a uniform light distribution, and with excellent heat dissipation properties.

A base stand 3 loading LEDs 2, and a reflector 4 in which a face opposed to the LEDs 2 is made as a right circular cone mirror-face reflecting face 4a with its apex positioned on a light axis X of the LEDs 2 and opening toward an opposite direction to the LEDs 2 against the light axis X are fitted into and fixed to a plurality of heat sinks 5 made of a platy metal member, fixed to a pedestal 15 and radially extended from the light axis X at positions with a given angle interval in a peripheral direction of the light axis X.