| abstract |
(57) [Abstract] [Purpose] To provide a reflector for a road sign that exhibits excellent visibility for a long period of time. [Structure] The surface of the road sign reflector (10) is covered with a photocatalyst-containing layer (30). Photocatalyst containing layer (30) When is exposed to the sun, the photocatalyst is photoexcited by sunlight, and the surface becomes superhydrophilic. The superhydrophilized surface is not electrostatically charged, and dirt is unlikely to adhere. Every time the reflector plate receives rain, the dirt adhering to the surface is washed away by rainwater, and the surface is self-cleaned. |