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Power-supply-integrated LED fluorescent lamp

A technology of LED fluorescent lamps and LED lamps, which is applied in the direction of electric light source, electric lamp circuit arrangement, light source, etc., can solve the problems of complex circuit design scheme, large loss of electronic components, and many electronic components, etc. The effect of less components and low light decay

Inactive Publication Date: 2014-04-23
蒋宏青
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Embodiment

[0018] like figure 1 In the LED fluorescent lamp with integrated power supply shown, multiple LED lamps 2 are installed in the lamp outer box 3, and the LED lamps 2 are connected to the power connectors 4 arranged at both ends of the lamp outer box 3; the power connector 4 is connected to the power cord 1 Connect with AC220V power supply.

[0019] like figure 2 The schematic diagram of the LED fluorescent lamp circuit with integrated power supply is shown, in which, the power supply adopts the principle of capacitor step-down, R1 is a discharge resistor, C1, C2, C3, and C4 are step-down capacitors, D1 is a bridge rectifier, C5, C6, and C7 , C8, C9, C10, C11, C12 are voltage limiting capacitors, R2 is current limiting resistors, L1, L2, L3, L4, L5, L6, L7, L8, L9, L10, L11, L12 are SMD LED lights Beads, the power is 0.2W each, the current is 60mA, and the light efficiency is 24LM / W. The discharge resistor R1, step-down capacitor C1, step-down capacitor C2, step-down capacit...

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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...

Claims

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Application Information

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IPC IPC(8): F21V23/02H05B37/00F21Y101/02F21Y115/10
Inventor 蒋宏青
Owner 蒋宏青
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