A combination lamp body 10, which are attached with a combination lamp, is arranged in a position adjacent to headlamp bodies 50, and includes a shaft provided on the outer end in the vehicle width direction. A support provided to each of the headlamp bodies 50 regulates inward and forward movements of the shaft in the vehicle width direction. An engagement part is fixed to the vehicle body. An attachment member 20 is provided removable from the rear face of the combination lamp body 10, and includes a locking part 21 engaging with the engagement part. While the outer ends of the combination lamp body 10 are rotated and moved toward the rear centered around the shaft 14, which is regulated in movement by the support 53, and the combination lamp body 10 reaches a predetermined position, the support regulates inward and forward movements of the combination lamp body 10 in the vehicle width direction, and the engagement part engages with the locking part 21 to regulate outward and backward movements of the combination lamp body 10 in the vehicle width direction.