| 摘要 |
<p>A headlight device (22) includes a reflector (31) having an accommodation recess part (31g) formed by projecting a reflective surface (31c) to a bulb (30) side with a rear surface of the reflective surface recessed to the bulb (30) side. The device further includes an optical axis adjuster (34) having a support part (35) swingably supporting the reflector (31) to a casing (32) and an adjustment mechanism (36) swinging the reflector (31) to adjust the direction of the optical axis. The adjustment mechanism (36) is disposed so that at least a part of the adjustment mechanism is positioned in the accommodation recess part (31g).
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