Display discharge lamp

Details Display discharge lamp Display discharge lamp

1991-10-30

1994-03-29

Yusko, Donald J.

Electric lamp and discharge devices

With gas or vapor

Discharge device with diverse electrodes

313618, 313619, 313631, 313632, H01J 6104

Patent

active

052988341

ABSTRACT:
A first display discharge lamp has a transparent airtight container filled with a discharge gas; a positive electrode disposed in the airtight container and supported by a stem having an air tube therein; a negative electrode of an inverted configuration disposed in the transparent airtight container and surrounded by the positive electrode; a lead member integrally formed with the positive electrode, having a bent portion between a lower end of the negative electrode and the stem; and an insulating member disposed between the lower end of the negative electrode and the bent portion of the lead member. According to a second display discharge lamp, both a negative electrode and a positive electrode are of an inverted conical configuration. The former has at least an open upper end, while the latter has an open upper end and an open lower end. A lower end of the positive electrode is inserted in an interior of the negative electrode from the open upper end of the negative electrode. And, a lower/outer periphery of the positive electrode is, in a non-contact condition, opposed to an upper/inner periphery of the negative electrode.

REFERENCES:
patent: 1879159 (1932-09-01), Foulke
patent: 2002551 (1935-05-01), Schmierer

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