PURPOSE: To continnuously inject a washing liquid onto every part of a vehicle body at a suitable angle by supporting nozzle bodies onto a carrier bed so as to be laterally rotatable about a horizontal shaft, and by providing a nozzle posture changing mechanism for turning the nozzle bodies so as to change the postures of jet nozzles into downward directions and longitudinal directions, on the carrier bed.

CONSTITUTION: A nozzle posture changing mechanism is operated in accordance with an instruction signal from vehicle type identification means 5, and accordingly so as to take a downward directing posture E at the bonnet, roof and a trunk lid of a vehicle body 2, but a forwardly downward oblique posture F at the front surface and front windshield pane thereof while it takes a rearwardly downward inclined posture G at the rear windshield pane and rear surface thereof. Washing liquid is jetted onto every part of the vehicle body to be washed, at a right angle or a near right angle thereto, and accordingly, the washing liquid is continuously jetted while the washing effect can be enhanced as possible as it can. Further, top nozzles 8 are rotated so as to change their postures, thereby it is possible to prevent the presence of a part where no washing liquid is fed.