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Metal halide lamp and UV bubble structure thereof

A metal sheet and metal wire technology, applied in the field of metal halide lamps, can solve the problems of UV bubble bursting and other problems, and achieve the effect of not easy to burst, reduce pollution, and small volume

Inactive Publication Date: 2009-05-20
SHANGHAI YAMING LIGHTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The UV bubbles need to be filled with Hg and Ar, but the liquid Hg in the existing UV bubbles is too much, and the UV bubbles are prone to bursting at higher temperatures

Method used

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  • Metal halide lamp and UV bubble structure thereof
  • Metal halide lamp and UV bubble structure thereof

Examples

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Embodiment Construction

[0015] first as figure 1 As shown, a UV bubble of the present invention includes a housing 101 of quartz glass, a molybdenum sheet 102 and a mixed gas of Hg and Ar filled in the housing, wherein the housing 101 is cylindrical, with a diameter ≤ 3.5mm, and the bottom of the housing is provided with Protrusion 103 . During manufacture, the molybdenum rod and the molybdenum sheet 102 are spot-welded first, the connected molybdenum sheet 102 is submerged in the quartz tube shell 101, and the flame is heated and hermetically sealed. After the other end of the shell is fed with argon and mercury, it is vacuumed and then filled with argon, and the filling and pumping process is repeated several times before being sealed off. During the sealing and separation process, appropriate technological means are adopted to minimize the presence of liquid mercury in the UV bulb, and the mercury content can be less than 0.5mg, and more optimally, the mercury content can be less than 0.3mg.

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Abstract

The invention discloses a UV bulb structure, which comprises a quartz glass shell, a molybdenum sheet and mixed gas of Hg and Ar packed in the shell. The shell is in a cylindrical shape, and the bottom of the shell is provided with a protrusion, wherein the content of the Hg is less than 0.5 milligram. As the content of the packed Hg is small, the structure is not easy to burst under heat, and possibly caused pollution is effectively reduced at the same time. The invention also discloses a metal halide lamp, which comprises a UV bulb, two electrodes and an electric arc tube, wherein the molybdenum sheet of the UV bulb is connected with one electrode; the shell of the UV bulb is connected with the other electrode through a metal sheet or a metal wire; and the metal sheet or the metal wire is wound around the outside of the UV bulb shell. The metal halide lamp has the advantages of no radioactivity and small volume. The gas between the molybdenum sheet and the quartz glass shell discharges electricity so as to emit rays to irradiate the electric arc tube, which can effectively help to start the metal halide lamp.

Description

technical field [0001] The invention relates to a metal halide lamp, in particular to a UV bulb structure in the metal halide lamp and a metal halide lamp using the UV bulb. Background technique [0002] High-intensity gas-discharge metal halide lamps have been used more and more widely. Due to the presence of gas-phase halogen atoms and halides, the starting voltage of MHL at room temperature is higher than that of HPM and HPS; the hydrogen introduced in the process also makes The start-up voltage increases; the electrode cools too fast and absorbs iodide, which increases the work function value. All of these will lead to the difficulty of starting the metal halide lamp. In the past, radioactive substances were added to help start-up, which caused great pollution to the environment. [0003] A UV (ultraviolet) bulb is set in the ceramic metal halide lamp. When the metal halide lamp is started, the arc tube of the metal halide lamp can be irradiated with ultraviolet rays or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/30H01J61/10
CPCH01J61/54
Inventor 周振民
Owner SHANGHAI YAMING LIGHTING
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