Windscreen wiper device for car, has control device coupled with detection unit for detecting environment parameter i.e. external temperature, where emerging of washing liquid is releasable based on signal of detection unit

摘要

The device (10) has a wiper blade (14) comprising a channel for washing liquid, where the washing liquid is applied on a pane (16) over an exhaust opening (18) of the channel. A control device (22) is provided for triggering leakage of the washing liquid from the exhaust opening. The control device is coupled with a detection unit (24) e.g. rain sensor, for detecting an environment parameter i.e. external temperature. Emerging of the washing liquid is releasable based on a signal of the detection unit. An independent claim is also included for a method for operating a windscreen wiper device for a car.