Outer electrode UV lamp tube with transparent electrode

Abstract

The invention discloses an outer electrode UV lamp tube with a transparent electrode. The outer electrode UV lamp tube comprises a lamp tube body, conductive gas, conductive coatings and the transparent outer electrode. The lamp tube is filled with conductive gas, the inner walls of the two ends of the lamp tube are coated with conductive coatings, the conductive coatings completely cover the inner walls of the two ends of the lamp tube, and the transparent outer electrodes are pasted on the outer surfaces of the two ends of the lamp tube; and the transparent outer electrodes are as long as the conductive coatings and completely cover the outer surfaces of the two ends of the lamp tube. The transparent outer electrode is adopted, the light-emitting area is large, and the light-emitting efficiency is high; the inner walls of the two ends of the lamp tube are coated with the transparent conductive coatings, impedance between the two electrodes is low, excitation voltage of the lamp tube is low, and ultraviolet radiation intensity is high.

Description

technical field [0001] The invention relates to the technical field of light source manufacturing, in particular to an external electrode UV lamp tube with transparent electrodes. Background technique [0002] Ultraviolet disinfection and sterilization are widely used in hospitals, schools, nurseries, movie theaters, buses, offices, families, etc. It can purify the air, eliminate musty smell, and can also generate a certain amount of negative oxygen ions. The rooms sterilized by ultraviolet rays, The air is very fresh. In public places, ultraviolet disinfection can prevent some germs from being transmitted through the air or through the surface of objects. The application of long-life ultraviolet germicidal lamps in water disinfection and environmental protection projects is of great significance. Water disinfection equipment such as pure water systems generally operate 24 hours a day. The life and reliability of ultraviolet germicidal lamps are required to be high. If the ...

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Problems solved by technology

[0004] Existing external electrode UV lamp tubes generally use graphite, silver glue, etc. as conductive materials, which are coated on both ends of the lamp tube. Small

In addition, this kind of UV lamp tube only has a conductive coating on the surface of the lamp tube, and the electric field is conducted into the tube through the lamp tube. Due to the low conductivity of quartz, a high voltage needs to be applied between the two electrodes to excite the gas in the tube. The cost of the driving circuit is high; at the same time, the impedance between the two electrodes of the lamp tube is large, the lamp current is small, and the ultraviolet radiation intensity is low

In the prior art, there are problems such as high driving voltage, small light-emitting area, low light extraction efficiency, and low radiation intensity.

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