Multi-digit fluorescent display tube with cathode filament suppo

Details Multi-digit fluorescent display tube with cathode filament suppo Multi-digit fluorescent display tube with cathode filament suppo

1976-11-19

1977-09-06

Demeo, Palmer C.

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313513, 313276, 313278, H01J 118, H01J 172, H01J 194, H01J 6306

Patent

active

040470741

ABSTRACT:
A multi-column fluorescent display tube having a filament cathode provided opposite to a plurality of fluorescent display sections, which comprises at least a filament damper made of an insulating material low in thermal conductivity and having contact sections for supporting and stretching the filament cathode under tension at the middle portion of the filament cathode, and filament damper supporters so formed that it can prevent electrification of the surface of the filament damper.

REFERENCES:
patent: 2570606 (1951-10-01), Simpson
patent: 3723789 (1973-03-01), Tanji

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