| abstract |
[PROBLEMS] To store electric energy converted by a solar battery in sunlight and use the electric energy to emit a light source, so there is no need to supply a commercial power supply or replace the battery. Provided is a lighting device for a sign that can be easily attached to a billboard, has excellent versatility, has a bright illumination, and has an attractiveness and visibility on an advertisement display surface. An illumination unit 5 having a light-emitting diode as a light source therein, a power source unit including a solar battery panel 7 and a storage battery that are disposed on an outer periphery of the illumination unit and supplies power to the illumination unit, and an ambient illuminance And a timer for controlling the supply of power to the illumination unit according to the set operating time, and a locking unit 3 for locking the illumination unit, It has. [Selection] Figure 1 |