Cold-cathode fluorescence lamp capable of regulating luminance

Abstract

The invention relates to a cold-cathode fluorescence lamp capable of regulating the luminance, with simple structure, suitability for continuously regulating the luminance and better stability. The cold-cathode fluorescence lamp comprises a luminance regulating drive circuit, wherein the luminance regulating drive circuit comprises a luminance regulator, a rectification circuit, a high frequency inversion circuit, a boosted circuit and a luminance regulating circuit, the luminance regulator is connected with an alternating current power supply, the alternating current output end of the luminance regulator is connected with the alternating current input end of the rectification circuit, the direct current output end of the rectification circuit is connected with the direct current input end of the high frequency inversion circuit, the high frequency alternating current output end of the high frequency inversion circuit is connected with the boosted control end of the boosted circuit, and the power supply output end of the boosted circuit is used for connecting with the power supply input end of the cold-cathode lamp; and the direct current output end of the rectification circuit isconnected with the power supply input end of the luminance regulating circuit, the feedback voltage output end of the boosted circuit is connected with the feedback voltage input end of the luminanceregulating circuit, and the luminance regulating control output end of the luminance regulating circuit is connected with the inverted frequency control end of the high frequency inversion circuit.

Description

technical field [0001] The invention relates to a dimmable cold cathode fluorescent lamp. Background technique [0002] Chinese patent application No. 200310109366.4 discloses a spiral cold cathode fluorescent lamp, which includes a bulb, a lamp tube, a lamp tube cathode, a guide wire, a driver and its casing, a lamp cap and wiring. [0003] The disadvantage of the above-mentioned prior art is that the above-mentioned cold-cathode lamp can only maintain one brightness when it is in use, and the brightness cannot be continuously adjusted, so it cannot meet the corresponding use requirements and the purpose of further energy saving. Contents of the invention [0004] The technical problem to be solved by the present invention is to provide a dimmable cold cathode fluorescent lamp with simple structure, suitable for continuous adjustment of brightness and good stability. [0005] In order to solve the above technical problems, the present invention provides a dimmable cold-c...

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Problems solved by technology

[0003] The disadvantage of the above-mentioned prior art is that the above-mentioned cold-cathode lamp can only maintain one brightness when used, and cannot perform continuous brightness adjustment, and cannot meet the corresponding use requirements and the purpose of further energy saving.

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