A kind of led lamp tube that can replace electronic fluorescent lamp tube

Abstract

The invention discloses an LED (light emitting diode) lamp tube with a replaceable electronic fluorescent lamp tube. The LED lamp tube comprises a tube body, wherein the tube body is provided with a first end and a second end, the first end is provided with a first lamp pin and a second lamp pin, the second end is provided with a third lamp pin and a fourth lamp pin, an LED luminous module and a power supply driving module are arranged in the tube body, the power supply driving module comprises a first input end, a second input end, a first output end and a second output end, the first output end and the second output end are respectively connected with positive and negative electrodes of the LED luminous module, the first lamp pin and the second lamp pin are respectively connected with the first input end through a first NTC (negative temperature coefficient) thermistor and a second NTC thermistor, and the third lamp pin and the fourth lamp pin are respectively connected with the second input end through a third NTC thermistor and a fourth NTC thermistor. The LED lamp tube has the advantages that the NTC thermistors are used for replacing lamp filaments of a traditional fluorescent lamp, so that an electronic ballast with the lamp filament protection function can normally work, and as the resistance value of the NTC thermistors is reduced along with the temperature rise, the generated power consumption is also correspondingly reduced, and the integral power consumption of the LED lamp tube is finally reduced.

Description

technical field [0001] The invention relates to an LED lamp tube, in particular to an LED lamp tube which can replace an electronic fluorescent lamp tube. Background technique [0002] Fluorescent lamps are the most commonly used lighting tools for offices and residences. Traditional fluorescent lamps generally use fluorescent tubes. Because LEDs have the advantages of energy saving and environmental protection, as LED technology continues to mature, fluorescent tubes are gradually replaced by LED tubes. Since the existing fluorescent lamps are often equipped with ballasts, the output current of which is AC, while LEDs require DC drive, in order to realize the replacement, it is necessary to install a power drive module in the LED lamp tube. [0003] Electronic ballast (Electrical ballast) is a kind of ballast, which refers to electronic equipment that uses electronic technology to drive electric light sources to produce the required lighting. Corresponding to it is an indu...

AI Technical Summary

Problems solved by technology

[0005] Like the above electronic ballasts, most traditional fluorescent lamp ballasts have a filament detection function, and the ballast will be protected when the filament is disconnected or short-circuited, so an analog resistor that can replace the filament is needed in the replacement LED lamp , if this resistor is replaced by an ordinary resistor, the energy loss will be quite large

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