Lighting device

E - Fixed Constructions – 04 – B

Patent

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Details

E04B 7/18 (2006.01) E04D 13/03 (2006.01) E04D 13/035 (2006.01) F21S 11/00 (2006.01)

Patent

CA 2232276

A lighting device may readily be installed in low cost. A lighting sleeve body 9 is rotatably mounted on a horizontal upper edge portion 4b of a sleeve-like mounting base 4 mounted on a roof. The lighting sleeve body 9 may be drivingly rotated in response to a position of the sun by a lighting sleeve body rotary drive mechanism 17 on the horizontal upper edge portion 4b of the mounting base 4. A plurality of reflector plates 19 are disposed rotatably around horizontal shafts 20 to reflect the sunshine within a lighting opening portion 9a at a slanted upper portion of the lighting sleeve body 9 and introduce lights into the interior of the room through inner passages 9b and 4c of the lighting sleeve body 9 and the mounting base 4. A reflecting angle of the reflector plates 19 may be changed in response to the position of the sun by a reflector plate rotary drive mechanism 27.

Cette invention concerne un puits de lumière d'installation facile et économique. Un caisson tournant 9 est monté sur roulettes circulant sur un rebord horizontal périphérique 4b d'une base 4 ajourée placée en toiture. Un mécanisme d'entraînement 17 permet de faire tourner le caisson 9 sur le rebord horizontal périphérique précité 4b) de la base 4 en fonction de la position du soleil. Une série de plaques réfléchissantes 19 montées sur axes tournants horizontaux 20 servent à dévier vers la pièce à éclairer et par les passages 9b et 4c du caisson 9 et de la base 4 les rayons du soleil pénétrant à l'intérieur par l'ouverture inclinée 9a en partie haute dudit caisson. L'angle de réflexion des plaques 19 est réglable en fonction de la hauteur du soleil au-dessus de l'horizon, au moyen d'un mécanisme de rotation 27 des axes tournants précités.

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