| 摘要 |
PURPOSE:To prevent the occurrence of an accident by making it impossible to drive a wiper and a washer in the case of selecting the wiper and washer operation during the time when a front window is operated on the cab peripheral surface side or when the front window is not normally fixed. CONSTITUTION:When a front window is operated on the cab peripheral surface side, or when the front window is stopped in the course of opening and closing by some obstacle, detection signals from detecting means 16, 18 for detecting the position of the driving position of the front window are input to a controller 17. According to the detection signals, the controller 17 judges and outputs no driving signal to a wiper motor 21 and a washer motor 22 when at least either a wiper operation switch 23 or a washer operation switch 24 is selected. Thus, even if the wiper operation switch 23 and the washer operation switch 24 are operated when the front window is operated on the cab peripheral surface side or when the front window 2 is stopped in the course of opening and closing, the wiper and the washer are not driven. |
