The invention is based on a windshield wiper device, in particular a wiper arm adapter device, having at least one fluid connection piece (36) which delimits at least one fluid channel (38), and having at least one adapter piece (40), wherein the adapter piece (40) and the fluid connection piece (36) are constructed to be able to be moved relative to each other and are provided to be moved relative to each other during a coupling or uncoupling operation, in particular with a wiper blade (16).
It is proposed that the windshield wiper device comprise at least one coupling unit (42) which is provided to close the fluid channel (38) in accordance with a position of the adapter piece (40) relative to the fluid connection piece (36).