| 摘要 |
PURPOSE:To easily fix a falling preventing fitting when an optional member is fixed, and hide a locking part in an end plate when the optional member is not used. CONSTITUTION:A ceiling luminaire 3 is positioned in the upper step, an optional member 8 is installed in the lower part of the ceiling luminaire 3, and when the ceiling luminaire 3 is positioned in the lower step, the lower part of the ceiling luminaire 3 is opened. An end supporting fitting 30 which is positioned on the outside of an end plate 7 of the ceiling luminaire 3 and prevents opening outward of the end plate 7 is fixed to the ceiling luminaire 3. A sliding fitting 31 having a locking part for locking a falling preventing fitting of the optional member 8 is slidably fixed to the end supporting fitting 30. When the ceiling luminaire 3 is positioned in the upper step, the slide fitting 31 is extruded downward from the end supporting fitting 30, and when the ceiling luminaire 3 is positioned in the lower step, the slide fitting 31 is accommodated in the end supporting fitting 30. |
