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Transformer-free LED (Light Emitting Diode) illumination lamp device directly using alternating current commercial power

A technology of LED lighting and AC mains, applied to lighting devices, components of lighting devices, lamp circuit layout, etc., can solve problems such as reliability decline, cost increase, and production difficulties, so as to improve reliability and save electric energy , cost reduction effect

Inactive Publication Date: 2012-01-25
王知康
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the physical properties of LEDs, which are driven by low-voltage DC, they are currently used on AC mains and require a relatively complex high-voltage AC-to-low-voltage DC circuit transformer. As a result, LEDs are difficult to produce and expensive to use on AC mains. rise, reliability drop and many other inconveniences

Method used

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  • Transformer-free LED (Light Emitting Diode) illumination lamp device directly using alternating current commercial power
  • Transformer-free LED (Light Emitting Diode) illumination lamp device directly using alternating current commercial power

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Embodiment Construction

[0020] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0021] According to the transformer-free LED lighting device of the present invention that directly uses AC mains power, such as figure 1 shown. The transformer-free LED lighting device that directly uses AC mains power includes a bridge rectifier circuit (DiodeBridge), and a current-limiting resistor is connected in series between the first input end of the bridge rectifier circuit and the first lead-in end of the AC mains power. R, a coupling capacitor C is connected in series between the second input end of the bridge rectifier circuit and the second input end of the AC mains, and the two output ends of the bridge rectifier circuit are connected in series and / or in parallel One or more LED tubes are connected.

[0022] In the...

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Abstract

The invention relates to a transformer-free LED (Light Emitting Diode) illumination lamp device directly using alternating current commercial power, which comprises a coupling capacitor, a bridge type rectifying circuit and a current-limiting resistor, wherein the current-limiting resistor is connected between the first input end of the bridge type rectifying circuit and a first lead-in end of an alternating current commercial power supply in series; the coupling capacitor is connected between the second input end of the bridge type rectifying circuit and a second lead-in end of the alternating current commercial power supply; and an LED tube is connected between two output ends of the bridge type rectifying circuit. The transformer-free LED illumination lamp device directly using alternating current commercial power, which is provided by the invention, has a simplified circuit structure and reduced production cost and is suitable for large-scale production.

Description

technical field [0001] The invention relates to an LED illuminating lamp device which directly uses AC mains without a transformer. Background technique [0002] As global energy issues are getting more and more attention, light-emitting diodes (LEDs), which represent light sources, can have high luminous efficacy without producing heavy metal pollution, and the use of LEDs plays an increasingly important role. Due to the physical properties of LEDs, which are driven by low-voltage DC, they are currently used on AC mains and require a relatively complex high-voltage AC-to-low-voltage DC circuit transformer. As a result, LEDs are difficult to produce and expensive to use on AC mains. Inconveniences such as rising, falling reliability and so on. Contents of the invention [0003] In order to solve the above problems, the present invention provides an LED lighting device that can directly use AC mains without a transformer. It can be used on mains electricity, and can prolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V23/00H05B37/02F21Y101/02
CPCF21Y2103/003F21V23/02F21Y2101/02Y02B20/348H05B33/0809F21Y2103/10F21Y2115/10H05B45/00H05B45/30Y02B20/30
Inventor 王知康
Owner 王知康
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