| 摘要 |
PURPOSE: A safety indicator light for indicating on a road is provided to feed the generated power according to the ambient brightness to a lamp and to induce a vehicle to travel without power supply. CONSTITUTION: A safety indicator light is operated by: starting to charge a charge unit without feeding power generated from a solar cell(7) to a light emitting unit(5) if a switch is acted to a charge path by a switching unit(12); immediately stopping charging the unit if the power from the solar cell is not generated; and serving light emitting diodes or laser diodes of the light emitting unit as an energy source to radiate a specific lights by discharging the power of the charge unit. The charge unit charges the sufficient amount of power to emit lights from the light emitting unit for a week at the maximum. |
