Low-pressure discharge lamp and luminaire provided with such a l

Details Low-pressure discharge lamp and luminaire provided with such a l Low-pressure discharge lamp and luminaire provided with such a l

1993-03-02

1995-02-07

Yusko, Donald J.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

313493, 313514, 313515, 313573, 313634, 313643, 313545, 313546, 445 70, 445 73, 445 26, 445 38, 445 53, H01J 1972, H01J 6124, H01J 6130

Patent

active

053878370

ABSTRACT:
A low pressure discharge lamp having a tubular discharge vessel (1). At each of its end portions (2, 3) the vessel (1) is fused to a respective metal tube (5) having an uncovered outer surface outside the vessel. A sealed glass tube (6) is fused to the metal tubes (5). Ignition aids (18, 28, 40) may also be present. The simple construction of the lamp permits manufacture and high lamp quality, even at long lengths and/or small diameters of the discharge vessel. The lamp may have an ionizable filling of rare gas or may also contain mercury. A fluorescent powder may also be present in the discharge vessel. The lamp (72) and a luminaire (70, 71) mounting the lamp may be used for display or signalling purposes.

REFERENCES:
patent: 1680633 (1928-08-01), Peters
patent: 2201390 (1990-05-01), Delaney
patent: 2433218 (1947-12-01), Herzog
patent: 3913999 (1975-10-01), Clarke
patent: 3974410 (1976-08-01), Collins et al.
patent: 3983439 (1976-09-01), Blommerde et al.
patent: 4035682 (1977-07-01), Bubar
patent: 4156550 (1979-05-01), Furukubo et al.
patent: 4437039 (1984-03-01), Larson
patent: 4975620 (1990-12-01), Masui et al.
patent: 5055738 (1991-10-01), Yorifuji et al.
patent: 5090931 (1992-02-01), Shiraishi

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