| 摘要 |
PROBLEM TO BE SOLVED: To provide a luminaire which can reduce heating and cooling load without requiring a motive power separately, and without applying a so large reformation to an existing equipment. SOLUTION: A damper box 9 is provided at the upper part of a housing box 3 to house a luminous lamp 2, and a change-over damper 10 is provided rotatable therein. By rotating the change-over damper 10 by a rotary handle 11 so as to move its cutting part 19, the inside of the housing box 3, and an exhaust pipe 12 or a suction pipe 14 are communicated selectively. The exhaust pipe 12 or the suction pipe 14 is connected to an existing feeding and exhaust device 16 housing an air blower. |
