| 摘要 |
<p>The device (1) has covering elements (11, 12) held by a mounting rod (15) and folded opposite to each other. The covering elements are guided through a ventilation pipe (2) that is inserted into an opening running from an inner side to an outer side of a wall (3). The covering elements are unfolded through rotation of the mounting rod and connected with one another by a joint i.e. hinge joint (13), where the joint is arranged at a distance from a center of gravity of the covering device. The mounting rod is connected with an inner wall-sided end of the ventilation pipe by a fastening unit.</p> |
