| 摘要 |
1,150,225. Illuminated ceilings. H. T. CEILINGS Ltd. 19 Aug., 1966 [19 May, 1965], No. 21160/65. Heading F4R. [Also in Division E1] Fluorescent lighting is incorporated in a false ceiling by stretching sheets 9 of P.V.C. between hollow casings 20, 20a in which the fluorescent tubes are supported by end brackets 19. Interior casings 20a are hung from the ceiling 14 by rods 6. The electrical fittings are housed in boxes 21 mounted on top of the casings. Alternatively light sources may be mounted between the ceiling and the false ceiling, providing a diffused lighting through the P.V.C. sheets. |
