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. Low, low probability of failure effect

Inactive Publication Date: 2015-01-21
HANGZHOU HPWINNER OPTO CORP
View PDF6 Cites 5 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Please refer to figure 1 , image 3 with Figure 5 In this embodiment, another specific improvement is made on the basis of the above basic scheme description.

[0063] In this example, please refer to figure 1 , The number of the three-phase full-wave rectification unit is one, and if the number of the direct-drive LED lighting device is at least two, then at least two of the direct-drive LED lighting devices are connected in parallel to the DC high-voltage output terminal VH and Between reference ground GND.

[0064] It can be regarded as a centralized power supply mode. 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 line is thinner. Cost can also be saved; DC power is transmitted after rectification, and the line loss caused by AC components is less, which can further save a lot ...

Embodiment 2

[0067] Please refer to figure 1 , Figure 4 with Figure 5 In this embodiment, another specific improvement is made on the basis of the above basic scheme description.

[0068] In terms of power supply, this embodiment is the same as embodiment 1, please refer to figure 1 , The number of the three-phase full-wave rectification unit is one, and if the number of the direct-drive LED lighting device is at least two, then at least two of the direct-drive LED lighting devices are connected in parallel to the DC high-voltage output terminal VH and Between reference ground GND.

[0069] The main difference between this embodiment and embodiment 1 is that, please refer to Figure 4 , The direct drive LED lighting device includes at least two DC high voltage drive LED modules, each of the DC high voltage drive LED modules includes one LED circuit, and each DC high voltage drive LED module is correspondingly arranged in one On a separate substrate. A number of the DC high voltage drive LED ...

Embodiment 3

[0071] Please refer to figure 2 , image 3 with Figure 5 In this embodiment, another specific improvement is made on the basis of the above basic scheme description.

[0072] This embodiment uses a different power supply mode from Embodiments 1 and 2. In this embodiment, please refer to figure 2 The number of the three-phase full-wave rectification unit matches the number of the direct-drive LED lighting devices, and the output side of each three-phase full-wave rectification unit is connected to one of the direct-drive LED lighting devices.

[0073] In other words, 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 the LED lighting device are balanced, and the power supply stability is high; each lighting device is equipped with a three The phase rectifier unit also makes the unit's bearing capacity small; the original road system...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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, and the output side of the three-phase full wave rectifier unit is connected with the direct-drive LED illuminating device, and the output side of the three-phase full wave rectifier unit is connected with the LED illuminating device through a direct current high-voltage output end and a reference ground end; the direct-drive LED illuminating device comprises a plurality of LED circuits, and each LED circuit comprises controlled LED particle circuit units and normally-on LED particle circuit units connected with the controlled LED particle circuit units in series; all the controlled LED particle circuit units in each LED circuit are connected with a direct-drive LED integrated control circuit with the on-off function; the direct-drive LED integrated control circuit is configured to realize the following functions: responding to inputted information and controlling the conduction and the short circuit of LED particles in the controlled LED particle circuit units.

Description

Technical field [0001] The invention relates to the field of LED lighting, in particular to a direct-drive LED lighting system controlled by an integrated control circuit. Background technique [0002] Light-emitting diodes are simply referred to as LEDs. 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. Used as indicator light in circuits and instruments, or composed of text or digital 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 lamp lighting system is drive...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & AuthorityApplications(China)
IPC IPC(8): H05B37/02
Inventor陈凯黄建明
OwnerHANGZHOU HPWINNER OPTO CORP