| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a ceiling-illuminating structure capable of making luminance uniform, and enhancing working environment and living environment. SOLUTION: In an illuminating unit 1, luminairs 1a, 1b, 1c, 1d, each of which is equipped with vessels 11, 21 in the form of straight tubes placed almost parallel to each other are arranged in an almost square shape by a planar view. It is provided with dimming stabilizers 31a, 31b, 41a, 41b, capable of mutually independently dimming outside vessels 11, 11 which are positioned on the outer peripheral side of the illuminating unit 1 and inside vessels 21, 21 positioned on the inner peripheral side.</p> |
