Low-frequency inner-coupled electrodeless fluorescent lamp

Abstract

The invention discloses a low-frequency inner-coupled electrodeless fluorescent lamp, which belongs to the field of illuminating apparatuses. The low-frequency inner-coupled electrodeless fluorescent lamp is characterized by mainly comprising a glass bubble casing, an inner power coupler, a lamp holder, a heat conducting base, a low-frequency ballast, and the like, wherein heat dissipating holes for dissipating the heat of the inner power coupler are arranged on the lamp holder, and the inner power coupler adopts the design of fanned solid ferrites and V-shaped grooves. The bottoms of the fanned solid ferrites are flat, and the bottoms of the V-shaped grooves are triangular; therefore, the bottom of each V-shaped groove forms an air convection hole when embedded, the heat in the inner power coupler can be dissipated quickly and effectively through the lamp base with heat dissipating holes, and meanwhile, the ballast with a low-frequency drive device improves the electromagnetic compatibility and solves the problem of the temperature rise of coils. The invention has the advantages of high electromagnetic compatibility, quick heat dissipation, good heat dissipating effect and prolonged service life of electrodeless fluorescent lamps.

Description

Technical field: [0001] The invention relates to an electrodeless fluorescent lamp, in particular to a low frequency internal coupling electrodeless fluorescent lamp with low frequency, fast heat dissipation and long life. Background technique: [0002] Electrodeless fluorescent lamp (or electromagnetic induction lamp) is an energy-saving lighting product with no electrode, no filament, high luminous efficiency, long life, and no liquid mercury. It is widely used in places that require natural light but are inconvenient to replace lamps or bulbs. , Such as: road lighting, factory lighting, mining lighting, railway tunnels, airports, ports, gas stations, textile and printing and dyeing industries, indoor sports fields, large conference rooms, auditorium halls, parking lot lighting, large advertisements, hypermarkets, etc. [0003] The EverCight electrodeless lamp of Panasonic Corporation of Japan in 1991, the Genura electrodeless lamp of GE General Company in 1994, the LQ ele...

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Problems solved by technology

[0004] At present, the low-frequency electrodeless lamps all use externally coupled low-frequency electrodeless fluorescent lamps such as circular and rectangular ones. The externally coupled low-frequency electrodeless fluorescent lamps are affected by their large size, difficulty in light distribution with lamps, and low efficiency; while the existing The in-coupling electrodeless fluorescent lamps all use high-frequency: 2.65MHz radio-frequency high-frequency ballasts to drive the electrodeless fluorescent lamp bulbs, so the electromagnetic wave radiation is relatively large, and the effective frequency-closed design of electromagnetic wave radiation in the working state is very difficult. Compatibility is difficult to pass, and it also increases the eddy current of the magnetic core of the in-coupling magnetic rod, which causes the temperature of the excitation coil to be too high; the high-frequency electrodeless lamp disclosed in the Chinese patent number: 200510102395.7, in order to reduce the temperature of the excitation coil, a capillary is specially designed The internal coupler of the structure is vacuumized and filled with working liquid to lower the temperature without energy consumption. After this cooling process, the temperature of the internal coupling magnetic rod of the internal coupling high-frequency electrodeless fluorescent lamp has indeed reached effect, but there are complex processes and high manufacturing difficulties, and the reliability of this process limits the reliability of the complete set of electrodeless fluorescent lamps, and the cost is high, so the promotion of electrodeless fluorescent lamps is subject to certain restrictions; the design of this electrodeless lamp is mainly frequency High, high temperature, poor heat dissipation, resulting in low lamp efficiency, large electromagnetic radiation, and difficult to pass EMC electromagnetic compatibility, which limits the application and popularization of electrodeless lamps (electromagnetic induction lamps)

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