OBSTACLE DETECTION DEVICE

An obstacle detecting device includes: a light source 154 having both LED units 154a and 154b each for emitting visible light and an infrared light unit 154c for emitting infrared light; and a rotating reflector 26 configured to be rotated in one direction around a rotational shaft while reflecting the visible light and the infrared light emitted from the light source. The rotating reflector is configured, by its rotating movement: to emit the visible light from each of the LED units 154a and 154b as an irradiation beam such that a first light distribution pattern is formed by scanning with the irradiation beam; and to emit the infrared light from the infrared light unit 154c as an irradiation beam such that a second light distribution pattern is formed by scanning with the irradiation beam.