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Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit

An integrated control circuit and LED lighting technology, which is applied in the field of LED lighting, can solve the problems of large driving current of high-power lighting systems, high cost of wires and cables, and low efficiency of LED lamp driving power, and achieves good anti-light flicker characteristics and low cost. The effect of low and high reliability

Inactive Publication Date: 2015-01-21
HANGZHOU HPWINNER OPTO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As an advanced light-emitting device, LED is widely used in road lighting, but the existing LED street lighting system drives are powered by single-phase AC mains, such as single-phase AC mains, the LED road lighting driven by this single-phase AC mains The technology has two obvious disadvantages, one is that the driving current of the road high-power lighting system is large, and the cost of the required wires and cables is high; the other is that the driving power efficiency of LED lamps is relatively low, generally only about 90%

Method used

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  • Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit
  • Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit
  • Direct-drive LED (Light Emitting Diode) illuminating system controlled by integrated control circuit

Examples

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Embodiment 1

[0058] Please refer to figure 1 , image 3 and Figure 5 , this embodiment has additional specific improvements on the basis of the above description of the basic solution.

[0059] In this Example 1, please refer to figure 1 , in this embodiment, the number of the three-phase full-wave rectification unit is one, and if the number of the direct-drive LED lighting devices is at least two, then at least two of the direct-drive LED lighting devices are connected in parallel to the DC Between the high voltage output terminal VH and the reference ground terminal GND.

[0060] It can be regarded as a power supply mode of centralized power supply. The three-phase AC power is rectified by a rectifier unit to supply power to all direct-drive LED lighting devices connected in parallel to it, which can reduce transmission lines and save costs; the rectified voltage is higher and the transmission lines are thinner. It can also save costs; after rectification, the transmission is direc...

Embodiment 2

[0069] Please refer to figure 1 , Figure 4 and Figure 5 , this embodiment has additional specific improvements on the basis of the above description of the basic solution.

[0070] In terms of power supply, this embodiment is similar to Embodiment 1, please refer to figure 1 , the number of the three-phase full-wave rectification unit is one, if the number of the direct-drive LED lighting devices is at least two, then at least two of the direct-drive LED lighting devices are connected in parallel between the DC high-voltage output terminal VH and Between the reference ground terminal GND.

[0071] It can also be regarded as a centralized power supply method. The three-phase AC power is rectified by a rectifier unit to supply power to all direct-drive LED lighting devices connected in parallel, which can reduce transmission lines and save costs; the rectified voltage is higher and the transmission lines are thinner. , can also save costs; after rectification, the transmis...

Embodiment 3

[0084] Please refer to figure 2 , image 3 and Figure 5 , this embodiment has additional specific improvements on the basis of the above description of the basic solution.

[0085] The power supply mode of this embodiment is different from that of Embodiment 1 and Embodiment 2, please refer to figure 2 , in this embodiment, the number of the three-phase full-wave rectification units matches the number of the direct-drive LED lighting devices, and the output side of each of the three-phase full-wave rectification units is respectively connected to one of the direct-drive LED lighting devices. LED lighting.

[0086] In this embodiment, a single three-phase full-wave rectifier unit is used to rectify and supply power to a single direct-drive LED lighting device, so that the phases of the three phase lines supplying power to the LED lighting device are balanced, and the power supply stability is high; each lighting device is equipped with a three-phase rectifier unit, which...

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Abstract

The invention provides a direct-drive LED (Light Emitting Diode) illuminating system controlled by an integrated control circuit. The direct-drive LED illuminating system comprises a three-phase full wave rectifier unit and a direct-drive LED illuminating device, wherein the input side of the three-phase full wave rectifier unit is connected with three-phase alternating current; the direct-drive LED illuminating device is connected with the output side of the three-phase full wave rectifier unit, and the output side of the three-phase full wave rectifier unit is connected with the direct-drive LED illuminating device through a direct current high-voltage output end VH and a reference ground end GND; the direct-drive LED illuminating device comprises a substrate and a plurality of LED circuit unit modules arranged on the substrate, and the LED circuit unit modules are connected between the high-voltage output end VH and the reference ground end GND in parallel; each LED circuit unit module comprises controlled LED particle circuit units and normally-on LED particle circuit units connected with the controlled LED particle circuit units in series, and the conduction and the short circuit of LED particles in the controlled LED particle circuit units are controlled by a control system.

Description

technical field [0001] The invention relates to the field of LED lighting, in particular to a high-voltage direct-drive LED lighting system. Background technique [0002] Light-emitting diodes are referred to as LEDs for short. Diodes made of compounds containing gallium (Ga), arsenic (As), phosphorus (P), nitrogen (N), etc. can radiate visible light when electrons and holes recombine, so they can be used to make light-emitting diodes. It is used as an indicator light in circuits and instruments, or as a text or number display. Gallium arsenide diodes emit red light, gallium phosphide diodes emit green light, silicon carbide diodes emit yellow light, and gallium nitride diodes emit blue light. Due to chemical properties, it is divided into organic light-emitting diode OLED and inorganic light-emitting diode LED. [0003] As an advanced light-emitting device, LED is widely used in road lighting, but the existing LED street lighting system drives are powered by single-phase...

Claims

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Application Information

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IPC IPC(8): H05B37/02
Inventor 陈凯黄建明
Owner HANGZHOU HPWINNER OPTO CORP