PURPOSE: To provide a reflector which is constituted of a reflector plate body supported movably by a supporting fitting having elasticity and can efficiently reflect the light source supplied from the outside in a wide range in the multi angle directions, and permit the sure recognition for the third party in a wide range.

CONSTITUTION: As for a reflector 2 having a reflector plate body 5 which is connection-fixed through a supporting fitting 4 fixed on an installation body 1, a curved part 8 which has elasticity and is curved in the longitudinal direction for the surface of the reflector plate body 5 is installed on the supporting fitting 4, and at one end of the supporting fitting 4, the reflector plate body 5 is fixed movably. An installation member is arranged at the other end of the supporting fitting 4.