LED fluorescent lamp with integrated power supply

Abstract

The invention relates to a power-supply-integrated LED fluorescent lamp. A plurality of LED lamps are mounted in an outer lamp box and are connected with power connectors at two ends of the outer lamp box. Power lines connected to the power connectors are connected with an AC220V power supply. The capacitor voltage reduction principle is adopted by the power supply of the power-supply-integrated LED fluorescent lamp, a bleeder resistor R1 and voltage-reducing capacitors C1-C4 are connected in parallel, the input end is connected with the AC220V power supply, and the output end is connected with a bridge rectifier D1. The output end of the bridge rectifier D1 is connected with voltage-limiting capacitors C5-C12 sequentially; the positive end of the voltage-limiting capacitor C12 is connected with a current-limiting resistor R2, and the other end of the current-limiting resistor R2 is connected with a lighting device composed of LED lamp beads. Through a ceramic laminated capacitor mode, the power-supply-integrated LED fluorescent lamp can operate without failures; a circuit structure is adopted, current is controlled according to the temperature, and the fluorescent lamp has selective high-quality electronic elements and few circuit-design electronic elements and is high in working efficiency, cost saving, convenient to mount, low in failure rate, energy saving and environment friendly.

Description

technical field [0001] The invention relates to an LED fluorescent lamp with integrated power supply, belonging to the technical field of LEDs. Background technique [0002] At present, LED fluorescent tubes are gradually entering people's lives and tend to replace traditional light bulbs. LED fluorescent lamps have high luminous efficiency. Generally, the luminous efficiency of traditional fluorescent tubes is 60-70LM / W, and the luminous efficiency of LED fluorescent tubes is 100LM / W. In addition, traditional fluorescent tubes emit light at 360 degrees, and the effective light part is only 70%. Left and right, LED fluorescent lamps emit light at 120 degrees, and the light-emitting surface is concentrated, and the actual light efficiency is much stronger than that of fluorescent lamps. Generally, the brightness of 18W LED fluorescent lamps can be equal to that of 40W traditional fluorescent lamps, and the light of LED fluorescent lamps is softer and easier for people to acc...

AI Technical Summary

Problems solved by technology

[0003] Traditional LED fluorescent lamps are controlled by an external power supply. There are many electronic components and the circuit design scheme is complicated. Using the principle of switching power supply, the circuit has many times of switching electronic components.

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