LIGHTING DEVICE AND LIGHTING FIXTURE

PROBLEM TO BE SOLVED: To improve utilization efficiency of light.SOLUTION: An emergency lighting device includes: an LED module 40; a lens 44 for controlling light distribution of the LED module 40; and a housing 5 for storing the LED module 40 and the lens 44. The lens 44 has: a lens body 440; and...

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Bibliographische Detailangaben
Hauptverfasser: NAKAMURA NOBUHISA, INOUE KIWAMU
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:PROBLEM TO BE SOLVED: To improve utilization efficiency of light.SOLUTION: An emergency lighting device includes: an LED module 40; a lens 44 for controlling light distribution of the LED module 40; and a housing 5 for storing the LED module 40 and the lens 44. The lens 44 has: a lens body 440; and an outer flange part 441 protruding in a direction being separated from an optical axis X1 on a peripheral surface surrounding the optical axis X1 of the lens body 440. The housing 5 has: a window 501 in which the lens 44 is inserted; and a standing wall 507 standing in a direction approaching the outer flange part 441 from the edge of the window 501 across the whole circumference of the window 501. An opposing surface 444 opposing to the standing wall 507 across the whole circumference of the standing wall 507 along a direction crossing the optical axis X1 out of an emission surface 443 is constituted so as to refract light L1 emitted from the opposing surface 444 in a direction being away from the standing wall 507.SELECTED DRAWING: Figure 20 【課題】光の利用効率の向上を図る。【解決手段】非常用照明装置は、LEDモジュール40と、LEDモジュール40の配光を制御するレンズ44と、LEDモジュール40及びレンズ44を収容する筐体5とを備える。レンズ44は、レンズ本体440と、レンズ本体440の光軸X1を囲む周面において光軸X1から離れる向きに突出する外鍔部441とを有している。筐体5は、レンズ44が挿通される窓501と、窓501の全周にわたって窓501の縁から外鍔部441に近付く向きに立ち上がる立壁507とを有している。出射面443のうちで光軸X1と交差する方向に沿って立壁507の全周にわたって立壁507と対向する対向面444は、対向面444から出射する光L1を立壁507から遠ざける向きに屈折させるように構成されている。【選択図】 図20