Illumination – Elongated source light unit or support – Housing
Patent
1984-04-06
1986-04-29
Cuchlinski, Jr., William A.
Illumination
Elongated source light unit or support
Housing
362223, 362260, 315 39, 315248, F21S 302
Patent
active
045861153
ABSTRACT:
For illuminating an area of a structure which is prone to explosion due to dust or vapors in the atmosphere, a system includes fluorescent type lighting devices which are energized by radio frequency energy without any physical connection to the lighting devices. The lighting devices include sealed envelopes having fluorescent material on the inner wall surfaces, and containing a gas which responds to external radio frequency electromagnetic radiation to excite the fluorescent material and produce visible light. The lighting devices are mounted within the structure by insulating brackets and may be mounted within impact resistant protective enclosures. The lighting devices are energized by radiating devices of electromagnetic energy which are mounted adjacent to the several lighting devices within the explosion prone area, and which are supplied with radio frequency electromagnetic energy through appropriate means from a generating source remote from or outside of the explosion prone area. The radiating devices may be metal rod antennas supplied with energy through a coaxial cable conduit. To utilize higher frequency energy, the radiating devices may be resonant horns or radiating disks connected to waveguide conduit which transmits the energy into the explosion prone area. The transmission conduit and radiating devices may be suitably insulated with rugged unbreakable solid plastic, virtually eliminating the possibility of flame, spark or heat to trigger an explosion.
REFERENCES:
patent: 2488169 (1949-11-01), Browner
patent: 2993973 (1961-07-01), Johnson et al.
patent: 3500118 (1970-03-01), Anderson
patent: 3911318 (1975-10-01), Spero et al.
Broz Joseph
Zimmerman S. Mort
Cuchlinski Jr. William A.
Murphy Peter J.
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