Illumination – Elongated source light unit or support – With means to accommodate additional circuit element
Patent
1991-11-12
1992-10-27
Dority, Carroll B.
Illumination
Elongated source light unit or support
With means to accommodate additional circuit element
362222, 362224, F21S 300
Patent
active
051583593
ABSTRACT:
An improved illumination system has a lamp encased in a translucent tube with open ends coupled to endcaps via seals disposed circumferentially around the open ends and securing the tube to the endcaps in removable engagement. The seals are compressed between the tube and a securing nut or collar, forming a watertight seal. The endcaps include electrical connectors for providing electrical power to the encased lamp, coupled to electrical circuitry such as a ballast transformer encased in a sealed housing, via conductors in sealed conduits leading to the endcaps. The illumination system can have two or more lamps in respective transparent tubes, in parallel relation with support tubes and conduits leading from the circuitry to the endcaps. Preferably, end portions of the conduits and tubes are angled, for example at 45 degrees with respect to a center portion, for positioning the transparent tubes at a plane displaced from that of the housing. Fixtures according to the invention can be cascaded in sealed arrays by appropriate tubing, for example along a factory ceiling wherein the fixtures are arranged in line and connected via polyvinyl chloride pipes.
REFERENCES:
patent: 2392202 (1946-01-01), Tornblom
patent: 2774947 (1956-12-01), Frensch
patent: 4156893 (1979-05-01), Baake
patent: 4229780 (1980-10-01), Nelson
patent: 4435744 (1984-03-01), Russo
patent: 4547839 (1985-10-01), Ripley
patent: 4712165 (1987-12-01), Cetrone
patent: 4851972 (1989-07-01), Altman
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