| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique for sharing duct parts with a plurality of ceiling casings different in duct mounting structure.SOLUTION: A duct device for an elevator car has a fist duct member and a second duct member. The first duct member can be mounted to the outside surface of the ceiling casing when a mounting part is directed inward, and when the mounting part is directed outward, it can be mounted to the inside surface of the ceiling casing. In the mounting state, the duct member constitutes an air flow passage between the interior of the car and the upper part of the car, and the horizontal sectional shape of the air flow passage is rectangular. The second duct member has a lower small opening which coincides with an upper opening of the first duct member by at least two connection methods and an upper large opening larger than the lower small opening, and has at least one vertical plane on the side of the air flow passage between the lower small opening and the upper large opening. The lower small opening is connected to the upper opening of the first duct member with the vertical plane directed outward. |
