| 摘要 |
PURPOSE:To open and close a lower surface cover for covering a lamp with excellent workability with the simple structure at a low cost. CONSTITUTION:A fitting guide 12 having two fitting parts 12a, 12b, which are to be fitted to a connecting rod 13 provided in the side plate forming a ceiling, is provided in one side of a lower surface cover 8 provided under a lamp. When one fitting part 12a is fitted to the connecting rod 13, the other side of the lower surface cover 8 is placed on a frame material 1 of the ceiling, and when the other fitting part 12b is fitted to the connecting rod 13, the other side of the lower surface cover 8 is disconnected from the frame material 1, and is turned around of the connecting rod 13 to open the lower surface cover 8. |
