Ventilation apparatus

Abstract

A ventilation apparatus for arranging in a wall-surface region of a building. Such ventilation apparatuses are customary for so-called unheated sheds (stables, cowsheds, pigsties, etc.). In this case, an outer side of a shed building is closed against the entry of wind only with one or more tarpaulin-like wall elements, which are arranged one above the other and can be opened for more extensive ventilation of the shed by virtue of the fact that the wall element is wound toward the top like a roller blind. The object of the invention is therefore to provide a ventilation apparatus in which the wall element is opened by defined or controlled lowering of the top margin of the wall element while simultaneously winding the wall element and only by means of a single drive. This object is achieved according to the invention in that the wall element and the tension element together with further elements form a bow, ultimately more or less closed via the single common drive member, in which case the tension member itself is preferably unwound on the winding shaft to the same extent as the wall element is wound, or vice versa, specifically in opposite directions to one another.

Dependencies are inferred from the claim text.