Multi-phase electromagnetic induction no-pole fluorescent tube

Abstract

The invention provides a multiphase electromagnetic induction electrodeless fluorescent lamp, comprising a high frequency multiphase current generation and controlling device, high frequency electromagnetic coupling coils, a fluorescent lamp and closed tubes of the fluorescent lamp, wherein, the high frequency multiphase current generation and controlling device is of the high frequency three phase or the multiphase of which the number of phases is more than three; the number of the high frequency electromagnetic coupling coils, the number of the excitation closed tubes of a fluorescent lamp and the number of the phases of the high frequency multiphase current generation and controlling device are the same; each excitation closed tube of the fluorescent lamp is provided outside with a single phase high frequency electromagnetic coupling coil. The multiphase electromagnetic induction electrodeless fluorescent lamp has the advantages of simple structure and reliable performance; moreover, a low power high frequency switching tube with low cost can be synthesized with the high frequency magnetic field to form the high power electrodeless induction fluorescent lamp provided with a performance-price ratio which is obviously better than that of the fourth generation semiconductor LED illuminating lamp.

Description

technical field [0001] The invention relates to an illuminating fluorescent lamp, in particular to the field of a multiphase electromagnetic induction electrodeless fluorescent lamp. Background technique [0002] The electric light sources commonly used for lighting can be divided into several generations. The first generation is an incandescent light bulb, which has the advantages of low price and many specifications. The disadvantage is that the tungsten wire has a short life, high heat generation, and low light efficiency. Eliminate incandescent light bulbs. The second generation is a fluorescent lamp. Its mechanism is that the ultraviolet light in the tube excites the fluorescent powder on the inner wall to emit light. The light efficiency is high. The disadvantage is that the filament electronic powder has a short service life, and the lamp power is difficult to exceed two to three hundred watts, and the higher the lamp power, the shorter the lamp life. . The third g...

AI Technical Summary

Problems solved by technology

The first generation is an incandescent light bulb, which has the advantages of low price and many specifications. The disadvantage is that the tungsten wire has a short life, high heat generation, and low light efficiency. phase out incandescent light bulbs

The second generation is a fluorescent lamp. Its mechanism is that the ultraviolet light in the tube excites the fluorescent powder on the inner wall to emit light. The light efficiency is high. The disadvantage is that the filament electronic powder has a short service life, and the lamp power is difficult to exceed two to three hundred watts, and the higher the lamp power, the shorter the lamp life.

The third generation is a high-intensity gas discharge lamp, which has no filament and has an arc electrode. In essence, it emits light by controlling a short arc discharge in a high-pressure bulb. The advantages are high arc light efficiency and long electrode life. The specifications can range from ten watts to several Kilowatt, the disadvantage is that there are difficult problems of "acoustic resonance" and "thermal start", and it is difficult to control the arc stability of the lamp and the constant power of the lamp

The fourth generation is a semiconductor light-emitting diode, without filaments and arcs, and emits light due to semiconductor electronic energy band transitions. It has high luminous efficiency, long life, and mature lamp current constant current control technology. The disadvantage is that the power of a single lamp is too small, and the light is "bright but not enough" Bright", the price of a single lamp is high, and the price of integrating multiple lamps with low power into a high-power lamp is more expensive, and the cost threshold is too high

[0003] At present, the existing high-frequency magnetic induction fluorescent lamps are all single-phase high-frequency structures. Due to the constraints of single-phase structures, it is difficult to make higher-power electromagnetic induction electrodeless fluorescent lamps.

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