| 摘要 |
PURPOSE:To execute washing while outflow of washing water is prevented, and to improve efficiency in washing of marking lamps in an airport by a method wherein the washing work is executed by operation from a driver's seat with a washing machine kept being installed to a vehicle. CONSTITUTION:A washing unit 7, projecting from the body 4 of a working vehicle and capable of changing its height, is provided and a glass 2 of a marking lamp 8 is washed with washing water ejected from a washing water nozzle 6. In washing, outflow of waste water from the washing unit is prevented with an elastic rubber material installed to a washing machine cover 5 on a position contacting with road surface. By ejecting compressed air through a compressed air nozzle 9 installed to the end on the inside of the washing water cover, waste washing water is gathered to one side and sucked with a vacuum pipe 10 through its front end that is positioned opposite to the compressed air nozzle. Thereby, the waste water is not allowed to flow to the outside of the washing unit. |
