Light-emitting diode (LED) fluorescent lamp and connecting circuit thereof

Abstract

The embodiment of the invention discloses a light-emitting diode (LED) fluorescent lamp and a connecting circuit thereof. The LED fluorescent lamp comprises an LED fluorescent tube; the LED fluorescent tube comprises a first end cap and a second end cap, which comprise two pins respectively; a first inductor and a first bridge rectifier circuit are parallelly connected between the two pins of the first end cap; a second inductor and a second bridge rectifier circuit are parallelly connected between the two pins of the second end cap; a first inductor is serially connected between one pin of the first end cap and one pin of the second end cap; a second inductor is serially connected between the other pin of the first end cap and the other pin of the second end cap; the output end of the first bridge rectifier circuit and the output end of the bridge rectifier circuit are parallelly connected with an LED lamp group which comprises an LED light source group and a circuit for supplying constant current and constant voltage. By the invention, the LED fluorescent lamp can be used for directly replacing a fluorescent lamp under the condition of no change of a peripheral circuit of the conventional fluorescent lamp.

Description

technical field [0001] The invention relates to the LED field, in particular to an LED fluorescent lamp and a fluorescent lamp connection circuit. Background technique [0002] Among traditional lighting sources, straight tube fluorescent lamps and circular fluorescent lamps have been widely used in commercial lighting, office lighting and home lighting. Such as figure 1 , figure 2 and image 3 Shown are the circuit diagrams of three common fluorescent lamps at present. Such as figure 1 As shown, the first common fluorescent lamp circuit includes an inductive ballast, a fluorescent tube and a starter S installed on the starter base Y, and the mains (that is, commonly referred to as alternating current) is energized from the inductive ballast One end of the device and one end of the fluorescent lamp are input at the same time. Such as figure 2 As shown, the second common fluorescent lamp circuit uses an electronic ballast to replace the magnetic ballast in the first ...

AI Technical Summary

Problems solved by technology

[0011] Since fluorescent lamps have been widely used in daily life, brackets, lamp panels and peripheral circuits specially designed for fluorescent lamps have already been deployed in large quantities. If the peripheral circuits of fluorescent lamps that have been formed are changed in order to use LED fluorescent lamps, it will increase a lot of cost. , and waste a lot of resources

Images