| 摘要 |
PURPOSE:To prevent the thermal deformation of a lighting fixture unit caused by heat at the lighted time of light source. CONSTITUTION:A lighting fixture unit 8 is provided therein with an inverted L-shape heat insulating plate 24 spaced from the lighting fixture unit 8. Its horizontal part 24a is positioned between the ceiling face 35 of the lighting fixture unit 8 and a valve 22, and its vertical part 24b is positioned between the valve 22 and the back face wall inner face 43 of the lighting fixture unit 8. A vent hole 45 is provided in the back face of a lighting fixture body 6 so as to communicate the inside-outside of the lighting fixture unit 8 with each other. |
