Long service-life ceramic metal halide lamp and manufacturing method thereof

A technology of ceramic metal halide lamps and manufacturing methods, which is applied in the manufacture of discharge tubes/lamps, ships or lead-in wires, cold cathodes, etc., and can solve problems such as seal failure and halide rapid corrosion

Inactive Publication Date: 2010-04-28
GUANGZHOU WEILI LIGHTING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the main failure modes affecting the life of ceramic metal halide lamps is seal failure. The main reason is that the sealant used to seal the electrodes and sleeves is rapidly corroded by the halides in the lamp tube due to high temperature.

Method used

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  • Long service-life ceramic metal halide lamp and manufacturing method thereof
  • Long service-life ceramic metal halide lamp and manufacturing method thereof
  • Long service-life ceramic metal halide lamp and manufacturing method thereof

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Embodiment Construction

[0018] The present invention will be described in further detail below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0019] The structural diagram of the present invention is as figure 1 shown, including alumina (Al 2 o 3 ) sleeve tube 1, aluminum nitride (AlN) sleeve tube 2, sealant between the two sleeve tubes 3, molybdenum (Mo) 4 for the electrode, niobium (Nb) 5 for the electrode, tungsten 6 for the electrode, used to seal the electrode and the sleeve tube The sealant 7 and the appropriate amount of additives 8 composition.

[0020] It can be seen that the design of aluminum nitride (AlN) sleeve 2 is one with aluminum oxide (Al 2 o 3 ) Sleeve 1 has a plug-type short tube with the same inner and outer diameters, and with aluminum oxide (Al 2 o 3 ) at the interface of the sleeve 1, the trapezoidal structure of the aluminum nitride (AlN) sleeve 2 and the aluminum oxide (Al 2 o 3 ) The trapezoidal...

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Abstract

The invention discloses a long service-life ceramic metal halide lamp and a manufacturing method thereof. Specifically, the electrodes of the ceramic metal halide lamp are sealed in the sleeve tubes at both ends of an electric arc tube, the tail end of the sleeve tube is provided with a short section having aluminum nitride (AlN) accounting for 10%-30% of the sleeve tube, and the short section having aluminum nitride (AlN) is sealed in the sleeve tube, wherein the main body of the electric arc tube and the sleeve tube except the part having aluminum nitride (AlN) have the main component of aluminum oxide (Al2O3) accounting for 70%-90% of the sleeve tube. Finally, the ceramic metal halide lamp is sintered at high temperature in a heating furnace. The aluminum nitride (AlN) has high thermal conductivity so that the temperature of the sleeve tube be reduced by more than 50 DEG C when in use and the chemical reaction between halide and sealing agent is reduced by several times, thereby slowing down the error mode of the ceramic metal halide lamp and prolonging the service life of the ceramic metal halide lamp, and simultaneously facilitating to reduce the length of the sleeve tube so as to be capable of reduce the size of the lamp liner and facilitate to have miniaturization.

Description

technical field [0001] The invention relates to a novel ceramic metal halide lamp, in particular to a high-life ceramic metal halide lamp and a manufacturing method thereof. Background technique [0002] Ceramic metal halide lamps are developed on the basis of the manufacturing technology of quartz metal halide lamps and high-pressure sodium lamps. They not only have the high luminous efficiency of high-pressure sodium lamps, but also overcome the shortcomings of low color temperature and poor color rendering of high-pressure sodium lamps. Better color rendering, more stable light color, less light decay, and longer life, so it has more excellent performance. With the promotion of global green lighting, the improvement of lighting quality requirements, the development of ceramic metal halide lamp manufacturing technology and the continuous reduction of manufacturing costs, ceramic metal halide lamps have made great progress in the lighting source industry, making them in ene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J61/36H01J61/30H01J61/16H01J9/24H01J9/26
Inventor 魏群李卓
Owner GUANGZHOU WEILI LIGHTING TECH
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