Shatter-proof fluorescent lamp
AssigneeMatsushita Electronics Corporation
InventorsYoshinori Ohtaka, Haruo Shibata, Toyokazu Amano, Mutsuo Takahashi, Shigeru Kamiya
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Abstract
A shatter-proof fluorescent lamp which includes a glass tube, electrodes connected to opposite terminal ends of the glass tube, a phosphor layer coated on the inside surface of the glass tube, a gaseous mixture containing mercury and rare gases confined in the glass tube, at least one ultraviolet ray absorbing layer capable of absorbing ultraviolet rays of 400 nm or less formed on the glass tube, and a transparent polymer resin layer formed on the ultraviolet ray absorbing layer.
Claims2
A shatter-proof fluorescent lamp which comprises a glass tube, electrodes connected to opposite terminal ends of the glass tube, a phosphor layer coated on the inside surface of the glass tube, a gaseous mixture containing mercury and rare gases confined in the glass tube, a first layer absorbing ultraviolet rays of 400 nm or less formed on the glass tube, wherein the first ultraviolet ray absorbing layer is formed by submerging the tube in an aqueous solution containing zinc oxide dissolved in an organic solvent, a transparent polymer resin layer formed on the first ultraviolet ray absorbing layer, and a second layer absorbing ultraviolet rays of 400 nm or less formed on the transparent polymer resin layer, wherein the second ultraviolet ray absorbing layer is formed by submerging the tube in an aqueous solution containing zinc oxide dissolved in an organic solvent.
Dependencies are inferred from the claim text.