| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lighting device having photovoltaic power generation function of which the structure can be simplified. <P>SOLUTION: The lighting device having photovoltaic power generation function 10 includes a solar cell 12, a power storage battery 13 for storing power generated by the solar cell 12, a lighting part 15 which is turned on by the power of the power storage battery 13, and a controlling part 14 which monitors the generated power voltage of the solar cell 12 and deterioration of an average value of supplied power from the power storage battery 13 to the lighting part 15 and controls the lighting part 15. When the generated power voltage of a reference voltage or lower continues for a prescribed time duration, the controlling part 14 conducts an information control to inform it to the outside. <P>COPYRIGHT: (C)2013,JPO&INPIT |
