Fluorescent lamp and illuminating apparatus

Details Fluorescent lamp and illuminating apparatus Fluorescent lamp and illuminating apparatus

2006-06-15

2009-02-24

Williams, Joseph L (Department: 2889)

Electric lamp and discharge devices

With luminescent solid or liquid material

With gaseous discharge medium

C313S486000, C313S487000

Reexamination Certificate

active

07495379

ABSTRACT:
An object of the present invention to provide a fluorescent lamp in which after formation of a phosphor layer, a glass bulb is bent and in which the phosphor layer is not subject to cracking or peel-off even in bent parts with a small radius of curvature, thus offering a good appearance. A fluorescent lamp includes a glass bulb1having bent parts, a protective film2having a fine grain layer2acomprising fine grains of average grain size at most 100 nm and attached to an inner surface of the glass bulb, and large-sized grains some of which are buried in the fine grain layer2a,the other large-sized grains projecting from the fine grain layer2a,a phosphor layer3formed on the protective film2of the glass bulb1,discharge inducing means4, 4sealably installed in opposite ends of the glass bulb1,and a discharge medium sealed in the glass bulb1.

REFERENCES:
patent: 4916359 (1990-04-01), Jonsson
patent: 58-152365 (1983-09-01), None
patent: 3-55769 (1991-03-01), None
patent: 3055769 (2000-04-01), None
patent: 2004-6185 (2004-01-01), None

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