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    • 2. 发明授权
    • PLANAR FLUORESCENT LAMP WITH EXTENDED DISCHARGE CHANNEL
    • 具有延长放电通道平面荧光灯
    • EP0795198B1
    • 1999-03-24
    • EP95943650.2
    • 1995-12-01
    • WINSOR CORPORATION
    • WINSOR, Mark, D.
    • H01J61/10H01J61/32H01J61/30
    • H01J61/10H01J61/067H01J61/103H01J61/305H01J61/307H01J61/70H01J61/72H01J61/92
    • A flat planar fluorescent lamp having barrier structures overlaying the electrodes is described. The barrier structures include barrier walls and platforms between the electrodes and the lamp cover with passageways between the platforms and the lamp cover. The barrier structures cause the electric discharge between the lamp electrodes to pass between the platforms and the lamp cover. The interior of the lamp and the top of the platform are coated with a fluorescent material such that the lamp produces light throughout its interior, including the region directly above the electrode, thereby providing a source of light in an area which would otherwise be a dark region surrounding the electrode. In one embodiment, a cold electrode, a hot electrode, an ion barrier, and a tubulation are formed in a glass seal as a single unit, placing the terminals of the electrodes and the tipped-off tubulation in a small region of the lamp to permit easier access and alignment. Two tubulations are used to permit the lamp to be pumped at locations adjacent the two electrodes to reduce problems associated with free ions in the region around the electrode. In one embodiment, a metal lamp body having an insulative coating and including an integral barrier structure is formed using conventional metal stamping techniques. In another embodiment, the lamp body is formed from glass which is shaped according to known techniques to form an integral barrier wall. The platform is then attached to the integral barrier wall and supported at its sides by ledges formed in the sidewall and channel wall of the lamp.