| 摘要 |
PROBLEM TO BE SOLVED: To resolve poor visibility in the direction other than the front in a conventional rotating pilot lamp used in an emergency vehicle or the like emitting light by rotating a reflecting face and reflecting light from a light source to the surroundings as parallel light. SOLUTION: The rotating pilot lamp 1 is provided with a reflector 2 having a concave reflecting 20 comprising a paraboloid 21 of revolution and emitting parallel light in the front direction D1, a driving mechanism 3 rotating the reflector 2 around an axis 30 passing a focal point 22 of the reflector 2 and parallel to a vertical direction D2, and the light source 4 arranged at the focal point 22 of the reflector 2. A light diffusing part 25 comprising a multiplicity of minute uneven parts 24 are provided in a circumferential film 23 of the reflecting face 20. The light diffusing part 25 diffuses light even to areas not reachable by the parallel light. Visibility is improved in a wide area. |
