Flexible screen for covering ventilation opening in greenhouse, rolls on to roller and has inflatable pad to apply tension to screen in deployed position

摘要

The greenhouse is constructed with a flexible screen (4), which can be deployed or not, at will, over the ventilation opening. The screen has an upper edge, attached to the greenhouse frame, and a inner edge (5), attached to a roller (6), which can be driven in rotation. The greenhouse frame is fitted, below the opening, with an attachment element (7) for the roller, in the deployed position, designed to apply tension to the screen, in the deployed position, by means of an inflatable pad (12), which extends longitudinally parallel to the roller.