Patent ID: 6955459

Claim:
A vehicular marker lamp that lights in a predetermined lamp function color, comprising a main light emitting portion that has a predetermined chromatic exterior appearance and lights in said lamp function color, and an auxiliary light emitting portion disposed adjacent to said light emitting portion; wherein said auxiliary light emitting portion is comprised of a substantially colorless and transparent light guide plate and a light source which is disposed such that light thereof is incident to said light guide plate, said auxiliary light emitting portion being structured so that when said main light emitting portion is lit, said light guide plate emits light with a color substantially identical to said lamp function color of said main light emitting portion by light incident from said light source; said light guide plate is formed in a substantially fan shape, and said light guide plate has a plurality of belt-shaped reflecting areas that extend in a radial pattern, and a plurality of reflective elements that reflect light incident from said light source in a forward direction of said vehicular marker lamp are formed in a stepped configuration on each of said plurality of belt-shaped reflecting areas.