| 摘要 |
<p>The device comprises a hinge formed in such a manner that allows the opening of the flap (6) in the interior of the room. The flap is lined in a sectional frame (9) such that a main frame (9a) and a sub-frame (9b) are formed. The flap is opened in the interior of the room by the sub-frame and in the exterior of the room by the main frame. The sub-frame is an integrated component of the flap. The blocking and unblocking of the flap take place by a temperature sensitive element.</p> |
