Patent ID: 7972047

Claim:
A headlight unit swingably supported on a support member of a vehicle body, wherein a vertical adjustment of an optical axis is performed by swinging said headlight unit comprising: at least two, upper and lower headlight supporting portions spaced apart from each other at a rear portion of said headlight unit; and each of said upper and lower headlight supporting portions being composed of elongated holes formed in one of said headlight unit and said support member and a guide shaft provided on the other of said headlight unit and said support member and engaged with said elongated holes; said elongated holes formed at each of said upper and lower headlight supporting portions arcuately extending along the arcs of concentric circles about a virtual pivot center; said guide shaft provided at each of said upper and lower headlight supporting portions being adapted to slide in said respective elongated holes to perform the swing motion of said headlight unit about said virtual pivot center, wherein the elongated holes formed at the upper headlight supporting portions arcuately extend along an arc having a first predetermined radius and the elongated holes formed in the lower headlight supporting portions arcuately extend along an arc having a second predetermined radius that is smaller relative to the first predetermined radius.