Light guide luminaire

F - Mech Eng,Light,Heat,Weapons – 21 – V

Patent

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Details

F21V 8/00 (2006.01)

Patent

CA 2384293

A light guide (34) luminaire (20) includes a longitudinal housing (22) having a center (43) and an inner surface (41), and a light guide (34) formed of at least two sections (24a, 24b) of optical lighting film (26a-c) arranged within the housing (22) such that the shortest distance between the center (43) of the housing (22) and the inner surface (41) of the housing (22) is smaller than the radius of curvature of each section (24a, 24b) of optical lighting film (26a-c). The light guide (34) is slidably retained within the housing (22), and the housing (22) and optical lighting film (26a-c) are arranged to define air gaps (36) between the housing (22) and optical lighting film (26a- c). The luminaire (20) may also include an extractor element (28) extending radially inwardly from the inner surface (41) of the housing (22) for scattering light, and a back reflector (24a-24b) for reflecting light back into the light guide (34). A joint member adapted to slidably receive end portions of the optical lighting film sections (26a-c),the back reflector sections (25a-24b), and an extractor element (28) is also disclosed.

Ce luminaire (20) à guide d'onde (34) comprend un logement longitudinal (22) comportant un centre (43) et une surface intérieure (41), un guide d'onde (34) formé d'au moins deux sections (24a, 24b) d'un film d'éclairage optique (26 a-c) agencé dans le logement (22), de façon que la plus courte distance entre le centre (43) du logement et la surface intérieure (41) de ce logement soit inférieure au rayon de courbure de chaque section (24a, 24b) du film d'éclairage optique (26a-c). Le guide d'onde (34) est maintenu coulissant dans le logement (22), le logement et le film (26a-c) étant conçus pour définir des espaces d'air (36) entre le logement (22) et le film d'éclairage optique (26a-c). Ce luminaire (20) peut également comprendre un élément extracteur (28) s'étendant radialement vers l'intérieur à partir de la surface intérieure (41) du logement, aux fins de diffusion de la lumière, ainsi qu'un rétroréflecteur (24a-24b) destiné à réfléchir la lumière, en retour, dans le guide d'onde (34). L'invention concerne également un élément associé, construit pour recevoir de manière coulissante des portions d'extrémité des sections du film d'éclairage optique, (26 a-c), de même qu'un élément extracteur (28).

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