| 摘要 |
PROBLEM TO BE SOLVED: To overcome problems: a photovoltaic power generation panel becomes stained with time, causing deterioration in generation efficiency; repairing or replacement of the panel is difficult; a cleaning apparatus is liable to be significantly deteriorated with time, degrading the appearance when left on roof; a conventional cleaning apparatus is liable to produce uneven cleaning; and to maintain at least 95% or more of the generation efficiency of the panel attained in new arrangement for the life period of at least 10 years.SOLUTION: A rail is laid on the roof at a predetermined position, a cleaning device is set so as to automatically travel on the rail while being controlled vertically and horizontally with a guide mechanism. Thereby, the photovoltaic power generation panel is allowed to be periodically and automatically cleaned with a rotary brush or the like while being supplied with water or a cleaning agent when required. When the cleaning apparatus is not used, a means is employed for storing the cleaning device in a shade of a less conspicuous place under the eaves of the roof, avoiding the sun light or rain water or the like. |
