| 摘要 |
<p>An external screening device for a pivotable skylight window comprises a web (5) of a screening material which is wound on a spring-biased roller (11) and is connected with a bottom bar (7) guided in side guide rails (9, 10) which is connected via a cord drive (14, 15) with an unrolling drive unit (12, 13). The side guide rails (9, 10) for the bottom bar (7) run along the parts (3) of the frame side portions situated above the axis of rotation (2) and the parts (4) of the sash side portions situated below the axis of rotation (2), and an essentially rod-shaped support device (8) is attached to and extends across the screening web (5) and is led in the side guide rails (9, 10) so that in a position of use for the screening device it is positioned at or close to the axis of rotation (2) in parallel therewith. The device may be provided with means for retightening and smoothing the web (5) in the fully drawn position and during rewinding.</p> |
