Ventilation system for ventilating heat in e.g. industrial building, during fire accident, has roller sliding along retaining element and flat-shaped plate or translucent plate, and cover plate fixed with retaining element and roller

摘要

The system has a drainpipe provided with a light cover. A profiled sheet is provided with an opening. A lid structure is connected with a roller (2). The roller slides along a retaining element and a flat-shaped plate (4) or a translucent plate. A cover plate is fixed with the retaining element and the roller. A transverse stiffening profile (3) is fixedly attached with upper and lower sides of a clock. An angular profile (5) is fixed with an end of the flat-shaped plate. A drainpipe slip is formed on the translucent plate.