Roof window assembly comprising a window component and an external screening accessory

A roof window assembly comprising:

• a main frame component for stationary connection with supporting means of a roof structure and including a top member, side members and a bottom member in a rectangular configuration,
• a substantially rectangular window component including a glazing element with external and internal major surfaces, and a window frame including a top member, two side members and a bottom member, said window frame members engaging edge zones of said external major surface of the glazing element along all sides thereof, wherein
• said window frame is made of profile material having substantially L-shaped cross-section comprising a first profile wall for engagement with said edge zones of said external major surface of the glazing element and a second profile wall extending generally at substantially right anales to said first profile wall,
• the second profile wall of at least the side members of the window frame providing at an external side thereof a transverse inwards recess extending in the longitudinal direction of the frame member,
• said roof window assembly further comprising at least one external screening accessory comprising an elongate housing extending in parallel with the top and bottom members of the frame, a screening member accommodated in said housing to be retractable therefrom by movement parallel to the side members of the frame and an end member connected with a free end of said screening member and extending throughout the width of the window frame parallel to the top and bottom members of the frame, engaging means being provided at either end of said end member for engagement with said transverse inwards recess of the second profile wall of each side of the window frame of the window component.