| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire capable of widening a light emitting area, obtaining uniform luminous intensity distribution, and enhancing comfortable brightness. SOLUTION: A luminaire has a luminaire main body 1 comprising an inner frame 3 and an outer frame 4, formed in (square) shape, and having a plurality of louver pieces between the inner frame 3 and the outer frame 4, and a lamp 2 arranged in (square) shape on the back surface side of the luminaire main body 1. The inner frame 3, the outer frame 4, and the louver piece 5 are constituted so that each of the inner frame 3, the outer frame 4, and the louver piece 5 forms a first glare cut angleθ1 to light passing between the inner frame 3 and the outer frame 4 of the lamp 2, and an angle formed by a surface containing a rear end part 10 of a side piece 11 of the inner frame 3 and a front end part 13 of a facing side piece 12 to the opening surface of the inner frame 3 forms a second glare cut angleθ2 to light passing through an inner space 17 of the lamp 2. |
