Electric lamp and discharge devices – With envelope – Having base and connector
Patent
1997-02-13
1998-08-04
Patel, Nimeshkumar
Electric lamp and discharge devices
With envelope
Having base and connector
31331811, 31331807, 313625, 313113, H01J 548
Patent
active
057898502
ABSTRACT:
A DC glow discharge lamp is disclosed, in which one the pinch seal portions of an arc tube of quartz glass with an anode and a cathode arranged therein in opposed relation to each other is bonded to a base by means of a ceramic adhesive containing a binder, and a conductive member connected around the cathode-side pinch seal portion is mounted in such a manner as to assume the same potential as the cathode. Even in the case where the binder mixed in the ceramic adhesive for improving the bonding strength is vaporized, it attaches to the conductive member and assumes a negative potential and thus is prevented from attaching to the cathode-side pinch seal portion. The devitrification of the pinch seal portion or the leakage therefrom which otherwise might occur due to the binder are thus suppressed, thereby providing a DC glow discharge lamp with an improved service life.
REFERENCES:
patent: 4673843 (1987-06-01), Okanuma
patent: 5363706 (1994-11-01), Fromm et al.
patent: 5479065 (1995-12-01), Sugimoto
Furuya Mamoru
Iwafuji Yasuhiro
Kawashima Hiromichi
Murase Nanao
Tanaka Ichiro
Patel Nimeshkumar
Toshiba Lighting & Technology Corporation
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