Lighting circuit

Abstract

The invention relates to a lighting circuit which comprises a first rectifier diode, a second rectifier diode, a third rectifier diode, a fourth rectifier diode, a first group of light-emitting diodes (LEDs), a second group of LEDs, a third group of LEDs and a fourth group of LEDs, wherein the first group of LEDs are connected between a positive pole and a negative pole of the first rectifier diode; the second group of LEDs are connected between a positive pole and a negative pole of the second rectifier diode; the third group of LEDs are connected between a positive pole and a negative pole of the third rectifier diode; the fourth group of LEDs are connected between a positive pole and a negative pole of the fourth rectifier diode; when an alternating current (AC) power supply is in the positive half-wave period, the second and the third groups of LEDs give out light; and when the AC power supply is in the negative half-wave period, the first and the fourth LEDs give out light. The service life of the lighting circuit is prolonged.

Description

technical field [0001] The invention relates to the field of circuit design, in particular to lighting circuits. Background technique [0002] Semiconductor light-emitting diode, or LED (Light Emitting Diode), is a semiconductor solid-state light-emitting device. It uses a solid semiconductor chip as a light-emitting material. In the semiconductor, the excess energy is released through the recombination of carriers to cause photon emission, and directly emits red, yellow, blue, green, blue, orange, purple and other colors of light. [0003] In the current situation of increasing energy shortage, developed countries such as Japan, Europe and the United States have carried out semiconductor lighting renovation projects in the field of urban public lighting. Project, the international and domestic market prospect of LED lighting is huge. [0004] With the development of LED technology, LED light-emitting devices can be applied in various fields, and LED light-emitting devices...

AI Technical Summary

Problems solved by technology

[0005] However, the LED circuit structure of the prior art requires a special rectification circuit to rectify the AC power provided by the AC power supply and convert it into DC power before it can be supplied to the LED circuit structure.

Moreover, in the LED circuit structure of the prior art, if one LED tube is broken, all LED tubes cannot be used.

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