Vehicle wiper device for openable window glass

A wiper device for a window glass openable relative to a vehicle body comprising;

• a pivot shaft having a wiper arm and blade assembly at an end thereof and an a pivot shaft coupling member at another end thereof;
• a pivot holder secured to the window glass for rotatably holding the pivot shaft;
• an actuator fixed to the vehicle body for driving the pivot shaft so that the wiper arm and blade assembly may wipe a surface of the window glass, the actuator having an actuator power source for generating a driving force and an actuator coupling member engageable and disengageable with the pivot shaft coupling member so as to transmit and interrupt the driving force of the actuator power source to the pivot shaft;
• control means connected in circuit with the actuator for controlling an operation of the actuator;
• and
• a switch element connected in circuit with the control means for generating a first signal when the window glass is opened and a second signal when the window glass is closed,
• wherein the control means controls the actuator in such a manner that driving the pivot shaft is stopped immediately upon receiving the first signal and is started with a certain time delay after receiving the second signal.