ROOF WINDOW COMPRISING A PRE-STRESSED CHAIN ACTUATOR

A roof window comprising a sash (1) and a frame (2) adapted for receiving the sash (1), and at least one actuator (4) comprising a push-pull chain (5) and a bracket (6). The actuator (4) pivots the sash (1) against a load (L) of the sash (1). The push-pull chain (5) bends freely in a first direction (D1) and only to a limited extent in a second opposite direction (D2). The bracket (6) provides a support point (S) for supporting the load (L) of the sash (1), the support point (S) being laterally offset so that the load (L) of the sash (1) urges the push-pull chain (5) to bend in the second opposite direction (D2). A connection pin (8) extends though an oblong first opening (9) in the bracket (6) and secures the push-pull chain (5) to the sash (1) and/or the suspension arm (3). The connection pin (8) moves in the oblong first opening (9) in the direction of the longitudinal extent of the oblong first opening (9) which is aligned with the longitudinal extent of the push-pull chain (5) .