HEADLAMP DEVICE FOR STRADDLE-TYPE VEHICLE

A headlamp device of a straddle vehicle includes: a reflector unit to which a plurality of light source devices are secured, the reflector unit having a reflecting surface by which light emitted from the light source devices is reflected forward; a power supply circuit board located behind the reflector unit to adjust a voltage of electric power to be supplied to each light source device; a lamp housing accommodating the light source devices, the reflector unit, and the power supply circuit board; and an optical axis adjustment mechanism supporting the reflector unit in a manner permitting the reflector unit to tilt relative to the lamp housing. The power supply circuit board is secured to the reflector unit.