| 摘要 |
PURPOSE:To let a user at night know a place where a bench exists by illumination even in a park, etc., and also, to offer the illumination environment in which he can use the bench free from care, and moreover, to offer the bench with a light equipment, which dispenses with electric construction work and can provide power for itself. CONSTITUTION:In the daytime, a solar light is received by a solar battery 5, and this power is charged to an electric double layer capacitor provided in a power source part 2. When night comes and a natural light becomes dark, a photoelectric switch 6 operates, power supply to EL elements 3 and 4 from the electric double layer capacitor of the power source part 2 becomes a turn-on state and the EL elements are lighted. When morning comes and a natural light becomes bright, the photoelectric switch 6 operates and power supply to the EL elements from the electric double layer capacitor becomes a turn-off state, and the EL elements are turned off. |
