| 摘要 |
A cleaning device for cleaning the external surface of a spherical dome in which two transparent, almost semi-spherical bodies are joined with each other by the use of a flange mechanism to form an almost spherical dome and in which a solar ray collecting device is accommodated. The cleaning device comprises fixed members of a oneside-opened and hollow rectangular shape capable of being attachably and removably joined to a portion of the flange mechanism. The cleaning device further comprises a semi-circular wiper having fulcrums located on the fixed members along the diameter, the semi-spherical circle of the spherical dome can move so as to scan the semi-spherical surface thereof, a motor having a drive-shaft on the fulcrum for driving the wiper, a cleaning water passage having an ejection outlet on the inner circumferential surface of the wiper for ejecting pressurized cleaning water toward the spherical dome opposed thereto and a strain device for pressing said wiper onto the surface of the spherical dome with a constant pressure. |
