WINDOW ROLLER BLIND

The invention relates to a window roller blind with a frame having two lateral guide profiles (1), a first winding shaft (3) arranged at the upper frame end, a first roller blind fabric (4) wound onto the first winding shaft (3), a first pull rod (5) arranged at the free end of the first roller blind fabric (4), which is movably guided on the guide profiles (1) and has at least one first braking element that releasably engages at least one of the guide profiles (1) for fixing the first pull rod (5) in a desired position, a second winding shaft (6) arranged at the lower frame end, a second roller blind fabric (7) wound onto the second winding shaft (6), and a second pull rod (8) arranged at the free end of the second roller blind fabric (7), which is movably guided on the guide profiles (1). The object of the invention is to provide a window roller blind that is improved compared to the prior art. The invention achieves this object through a coupling device that releasably couples the first pull rod (5) to the second pull rod (8). In the coupled state, both pull rods can be moved together. This advantageously makes it possible to switch between two functions of the window roller blind with only one operating action, for example between a blackout function and an insect protection function.