| 摘要 |
An elevator capable of holding airtightness and controlling an atmospheric pressure inside a car (1) by using pressurizing and depressurizing means (2, 3), comprising the car (1) having ventilating means (10) for natural or forcible ventilation, the ventilating means (10) further comprising ventilating windows (11) formed in the ceiling of the car, ventilating window plates (12c) for closing the ventilating windows, lock means (13) normally locked to the ventilating window plates so as to close airtight the ventilating windows and, when receiving a normal power failure signal, releasing the lock, and window open/close means (12) for opening the ventilating window plates, when the lock is released, by the weights of weights (12f) suspended from the other end parts of wire ropes (12e) fixed to the ventilating window plates, whereby the safety of passengers can be assured by allowing the inside of the car to be ventilated when a power fails due to a trouble with the elevator. |
