Lighting system for mass-transit vehicles

B - Operations – Transporting – 60 – Q

Patent

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Details

B60Q 3/02 (2006.01) B60Q 3/00 (2006.01)

Patent

CA 2222610

A lighting system for preferentially illuminating the seating area (38) of a mass-transit vehicle (22) includes a light fixture (42) with an elongated lamp housing (52) longitudinally disposed above the seating area (38). Electrically- energized light sources (74) are mounted at each end of the light fixture (42). Three solid-core semi-rigid light pipes (76, 78, 80) extend end-to-end between the light sources (74) and are optically coupled to each other and to the light sources (74). The outer two pipes (76, 80) receive light from the light sources (74) and transmit it along their lengths and into the center pipe (78). All three pipes (76, 78, 80) emit light laterally into the passenger compartment (24). The pipes (76, 78, 80) run parallel to the lamp housing (52) between the lamp housing (52) and the seating area (38) so the lamp housing (52) can direct laterally emitted light from the pipes (76, 78, 80) into the seating area (38). Couplings (100) with rubber seals (108) allow the pipes to expand and contract longitudinally while preventing dust and insects from entering the couplings and inhibiting light transmission.

La présente invention concerne un système d'éclairage destiné à éclairer de préférence la zone des sièges (38) d'un véhicule de transports en commun (22), et qui comprend un support d'éclairage (42) comportant une structure de logement (52) montée longitudinalement au-dessus de la zone des sièges (38). Des sources lumineuses(74) à excitation électrique sont montées à chaque extrémité du support d'éclairage (42). Trois conduits de lumière semi-rigides à âme pleine (76, 78, 80) s'étendent d'un bout à l'autre entre les sources lumineuses (74) et ils sont couplés optiquement les uns aux autres et aux sources lumineuses (74). Les deux conduits extérieurs (76, 80) reçoivent de la lumière des sources lumineuses (74) et la transmettent sur leur longueur et dans le conduit central (78). Les trois conduits (76, 78, 80) émettent de la lumière latéralement vers le compartiment des passagers (24). Les conduits (76, 78, 80) sont parallèles à la structure de logement (52) entre cette dernière et la zone des sièges (38), de telle sorte que la structure de logement (52) peut diriger vers cette zone la lumière émise latéralement par les conduits (76, 78, 80). Des raccords (100) pourvus de joints en caoutchouc (108) permettent aux conduits de se dilater et de se contracter longitudinalement tout en empêchant la poussière et les insectes d'y pénétrer et de perturber la transmission de la lumière.

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