| 摘要 |
PURPOSE:To dispense with temporary illumination and prevent any danger at the time of construction of a ceiling after suspension of a luminaire by suspending the luminaire before the construction of the ceiling. CONSTITUTION:A wire 4 is suspended from a building slab 1, and a main body case 31 of a luminaire 3 is temporarily suspended in a position higher than a construction height of a ceiling 2 by a movable locking tool 5 to be movably locked. After construction of the ceiling 2, an opening 2A for fixing the luminaire is formed on the ceiling 2, and then, the main body case 31 is moved up to the fixing height at the opening 2A together with the movable locking tool 5, to be thus temporarily suspended again at this height so as to be fixed to the circumferential edge on the opening of the ceiling 2. In this case, a lamp 34 is fixed to the temporarily suspended main body case 31 and electrically wired so that the luminaire 3 is used as a lighting means for work. |
