LIGHTING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a lighting device which realizes downsizing.SOLUTION: A lighting device according to one embodiment includes: a radiator; light emitting elements; and a reflector. The radiator is formed into a cylindrical shape having a hollow part. One end part of the radiator is connected with a base part having heat conductivity so as to conduct heat thereto. The light emitting elements are installed on one surface of the base part. The reflector is installed on the one surface of the base part thereby being housed in the hollow part of the radiator and reflects light emitted from the light emitting elements in a direction that passes through the hollow part of the radiator.