| 摘要 |
PURPOSE:To provide a hook ceiling which can turn on and off a lighting fixture according to the opening and the closing of a door by only connecting a door switch to a terminal, and which never fails to turn off the lighting fixture. CONSTITUTION:While a round type hook ceiling 3 is provided in a private room A, a door switch 4 is provided. The door switch 4 is inserted and connected to the current passage of a lighting fixture 1 and indoor wiring inside the round type ceiling 3 by utilizing terminal metal fittings 13 and 13. By this inserting connection, the door switch 4 is turned on and off according to the opening and the closing of the door, and the lighting fixture is turned on and off. |
