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Light driving apparatus

A lighting driving and driving circuit technology, applied in lighting devices, electric lamp circuit layout, use of semiconductor lamps, etc., can solve problems such as damage to components and circuit damage, and achieve the effect of preventing circuit damage and prolonging service life.

Active Publication Date: 2015-04-22
株式会社动运
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At this time, the optocoupler 170 is only driven according to the output voltage (Vo) of the LED module 10 and supplies the feedback voltage to the power factor compensation circuit 130, and the power factor compensation circuit 130 will not flow the LED current (I LED ) is judged that there is a heavy load, the output voltage of the transformer circuit 120, that is, the voltage supplied to the LED module 10 (V OUT ) to boost (Boosting) to reach the saturation voltage, for example: 300V, resulting in accidents such as circuit damage or damage to components

Method used

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Embodiment Construction

[0043] Hereinafter, the structure and operation process of the lighting driving device according to the preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

[0044] Reference attached Figure 4 The lighting driving device according to an embodiment of the present invention preferably should include a rectifier circuit 110, which rectifies the electric wave output by the AC power source 100; and a transformer circuit 120, which measures the magnitude of the voltage output by the rectifier circuit 110. Convert and output; power factor compensation circuit 130, which uses the feedback voltage to sense the size of the load, and adjusts the output voltage of the above-mentioned transformer circuit 120 according to the sensed load size, and compensates the power of the power output by the AC power supply 100 Factor; smoothing circuit 140, which smoothes the voltage output by the above-mentioned transformer circuit 120 an...

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Abstract

The present disclosure relates to a light driving apparatus which may stably drive an LED light at a normal operation by feeding back the output voltage of the LED light and stably drive the LED light at an abnormal operation by feeding back the voltage supplied to the LED light, and the light driving apparatus includes: a rectifier circuit; a transformer circuit; a power factor correction circuit; a smoothing circuit; a constant-current driving circuit; a dimming control circuit; a photo-coupler; a sample and hold circuit; a first photo-coupler driving circuit for feeding back the voltage output from the sample and hold circuit and applying the feedback voltage as a driving voltage of the photo-coupler; and a second photo-coupler driving circuit for feeding back the voltage output from the smoothing circuit and supplied to the LED module and supplying the feedback voltage as a driving voltage of the photo-coupler.

Description

Technical field [0001] The present invention relates to a lighting driving device, in particular to a lighting driving device capable of stably driving LED lighting. Background technique [0002] In recent years, there has been increasing interest in LED lighting that is driven with low power consumption and has a brightness equivalent to that of lighting devices such as incandescent lamps. [0003] In particular, a lot of related research and development work has been done on lighting driving devices that control current to flow a constant current in LED lighting and drive LED lighting. This kind of lighting driving device has the function of various lighting effects. In particular, it can realize various lighting effects by changing the dimming of the LED elements arranged in series / parallel. [0004] figure 1 It is a structural diagram of a conventional lighting drive device, figure 2 It is an example diagram of the output voltage and LED current form based on the dimming contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B37/02H05B44/00
CPCH05B33/0893H05B33/0818H05B33/089H05B45/58H05B45/38Y02B20/30Y02B20/40H05B45/345
Inventor 陈重昊朴贤逸金周晟
Owner 株式会社动运