Fluorescent lamp

A fluorescent lamp and phosphor technology, applied in the field of fluorescent lamps, can solve the problems of maintaining illuminance, degradation, and difficulty in maintaining stability for a long time, and achieve the effects of extending service life, increasing light output, and high light stability
CN102403187AInactive Publication Date: 2012-04-04USHIO DENKI KK
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
USHIO DENKI KK
Publication Date
2012-04-04
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention provides a fluorescent lamp. The fluorescent lamp comprises a light-emitting tube made of quartz glass and having discharge gas including xenon packaged inside; a pair of electrodes formed on the length direction of the light-emitting tube and opposed through a dielectric medium; and an inner fluorescent body layer formed on the inner surface of the light-emitting tube. An opening part with no inner fluorescent body layer formed thereon is formed on a part on the circumferential direction of the light-emitting tube. The fluorescent lamp which can provide a fluorescent body layer which will not degrade can obtain a structure for stable light outputting. The fluorescent lamp is characterized in that an external tube is equipped in a way to cover the light-emitting tube; and an external fluorescent body layer is formed on the outer surface corresponding to the light-emitting tube and the opening part.
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Description

technical field

[0001] The invention relates to a fluorescent lamp, in particular to a fluorescent lamp emitting vacuum ultraviolet light. Background technique

[0002] Conventionally, it is preferable to use ultraviolet rays for photochemical reactions, sterilization, decomposition of organic substances, and the like. A low-pressure mercury lamp is often used as a light source of the ultraviolet rays, but recently, as in JP-A-2001-015078 (Patent Document 1), fluorescent lamps utilizing dielectric barrier discharge have also been proposed.

[0003] In the fluorescent lamp described in this patent document 1, a rare gas is sealed inside a luminous tube, and by generating a discharge that interposes a dielectric between a pair of electrodes, the rare gas is excited to emit ultraviolet light (vacuum ultraviolet light), and the luminous gas is excited on the inner surface of the luminous tube. The phosphor formed on the entire surface can obtain ultraviolet light in a predeterm...

Claims

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