Fluorescent display tube

Details Fluorescent display tube Fluorescent display tube

1997-05-28

1998-11-10

Patel, Nimeshkumar

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

313495, 313497, 313272, 313273, 313279, H01J 1908

Patent

active

058348921

ABSTRACT:
To obtain a fluorescent display tube which allows the cathode to be driven by a DC current from a battery even when the overall length of the tube becomes large. This object can be achieved by: placing anchors 11A and 11B on both ends of the cathode 10; placing a support on the middle point between the anchors 11A and 11B, to which part of the cathode 10 has been fixed; and adjusting the lengths between the support and the anchors 11A and 11B to be 100 mm or less, and then adding DC power sources 13A and 13B which pass DC currents negative with respect to the support, and positive with respect to the anchors 11A and 11B between the support 12 and the anchors 11A and 11B.

REFERENCES:
patent: 4047274 (1977-09-01), Kishino et al.
patent: 4049993 (1977-09-01), Kishino et al.
patent: 5179317 (1993-01-01), Watanabe et al.
patent: 5424607 (1995-06-01), Jeong

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