To allow a vehicular lighting fixture to have a DRL function with excellent optical performance at a low manufacturing cost.

A DRL light source unit 4 constituting a vehicular lighting fixture includes: an LED light source part 10 in which an LED light source 13 having an LED element is mounted on a substrate 14; a condenser lens 20 for converting the light emitted from the LED light source 13 into nearly parallel light; a reflector 30 for reflecting the nearly parallel light converted by the condenser lens 20 toward an inner lens 40 located forward of the reflector 30; and the inner lens 40 which transmits the reflected light from the reflector 30 and emits the light toward the outer lens located forward of the inner lens 40.