CN214315674U

CN214315674U - Novel LED lighting device with low-voltage single line series dimming function

Info

Publication number: CN214315674U
Application number: CN202120521514.7U
Authority: CN
Inventors: 单峰; 马万广; 黄富浩; 邱施繁
Original assignee: Shenzhen Zhongneng Taifu Technology Co ltd
Current assignee: Shenzhen Zhongneng Taifu Technology Co ltd
Priority date: 2021-03-12
Filing date: 2021-03-12
Publication date: 2021-09-28
Anticipated expiration: 2031-03-12

Abstract

The utility model discloses a novel LED lighting device that low pressure single line series connection was adjusted luminance relates to lighting apparatus technical field. The dimming system comprises an LED lamp, a dimming power adapter, an alternating current input wire and a single dimming wire, wherein the dimming power adapter is connected with an external controller through the wire, the power adapter comprises a rectifying circuit driver and a current control unit, the current control unit comprises a current adjusting unit, a voltage and frequency follower and a dimming module, the LED lighting device for dimming the LED lamp is connected in series through the current adjusting unit, the voltage and frequency follower, the dimming module and a dimming transmission line, and an external dimming source generator, so that the LED lighting device for dimming the LED lamp can be used, the current LED lighting device for dimming in series through the low-voltage single line is solved, the LED lamp cannot be dimmed, and the LED lamp cannot be used under different conditions.

Description

Novel LED lighting device with low-voltage single line series dimming function

Technical Field

The utility model relates to a lighting apparatus technical field, concretely relates to novel LED lighting device that low pressure single line series connection was adjusted luminance.

Background

The LED lighting device is an electro-optical conversion system, and the electro-optical conversion process thereof starts from a power supply part and sequentially comprises a primary power supply ("power spring"), power management and transformation, sensing and control, a driver, thermal management, LEDs and light mixing, scattering and optical extraction thereof, and the like.

The current LED use scenes are few in dimming application, the dimming modes on the market generally comprise 0-10V dimming, PWM dimming, DIALI dimming and the like, but the dimming modes are dimming of two lines, the dimming modes are the dimming of the two lines and all output the same brightness through the same signal, single or regional brightness control cannot be realized, the wiring cost is high, and the dimming flexibility is the main defects. The utility model discloses just provide based on above-mentioned research background, aim at providing a novel LED lighting device that low pressure single line is established ties and is adjusted luminance in order to solve above-mentioned defect, satisfy the operation needs.

SUMMERY OF THE UTILITY MODEL

The aforesaid that LED lighting device exists to prior art low pressure single line series connection dimming is not enough, the utility model provides a novel LED lighting device that low pressure single line series connection was dimmed, it has characteristics such as structural design is reasonable, long service life, production and cost of manufacture are low, can satisfy the user demand under the multiple condition, has higher suitability.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes:

a novel low-voltage single-line series dimming LED lighting device comprises a dimming system, wherein the dimming system comprises an LED lamp, a dimming power adapter, an alternating current input wire and a single dimming signal wire; the LED lamp is respectively connected with the dimming power adapter, the alternating current input lead and the single dimming signal wire; the dimming power adapter is connected with an external controller through a wire, the external controller comprises a controller shell and a dimming input and output serial port DIM-OU arranged on the controller shell, and the dimming input and output serial port DIM-OU is provided with an RJ-12 connector as a universal serial port and an AC power supply interface for transmission; the dimming power adapter comprises an adapter shell, a PCB circuit board, a rectifying circuit driver and a current control unit; the PCB circuit board, the rectifier circuit driver and the current control unit are all arranged in the adapter shell; the current control unit comprises a current adjusting unit, a voltage and frequency follower, a dimming module, a dimming signal transmission line and an external dimming line; the current adjusting unit comprises a microprocessor, a sampling resistor, a voltage feedback loop and a current feedback loop, wherein the sampling resistor RS1 is connected with a current detection port of the microprocessor, and the voltage feedback loop and the current feedback loop are respectively arranged at the pin position of the microprocessor for voltage feedback and current sampling feedback; the voltage and frequency follower comprises an integrated operational amplifier; the dimming module is connected with the integrated operational amplifier and the current adjusting unit, and the external dimming line is connected with the external controller.

As a further optimization of the above scheme, the LED lamp is connected to the dimming power adapter through a wire.

As a further optimization of the scheme, the input voltage width of the dimming power adapter is 100-300VAC wide-voltage input, and the output voltage is controlled at 24-50V.

Adopt the utility model provides a novel LED lighting device that low pressure single line is established ties and is adjusted luminance possesses following beneficial effect:

(1) according to the LED lighting device for dimming in series connection of the low-voltage single line, the LED lamp can be dimmed by arranging the current adjusting unit, the voltage and frequency follower, the dimming module and the dimming line and the external dimming source generator, so that the problems that the LED lighting device for dimming in series connection of the low-voltage single line cannot dim the LED lamp and cannot be used under different conditions are solved.

(2) The LED lighting device for dimming in series connection of the low-voltage single lines controls light transmission through the single dimming line, effectively reduces the manufacturing material and construction cost of the LED lamp, and improves the practicability of the LED lighting device for dimming in series connection of the low-voltage single lines.

Drawings

Fig. 1 is a schematic view of the working structure of the LED lighting device of the present invention.

FIG. 2 is a schematic diagram of the structure of the current control unit of the present invention

Fig. 3 is a schematic view of a typical wiring structure of the LED lighting device of the present invention;

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the LED lighting device comprises a dimming system, a light source and a light source, wherein the dimming system comprises an LED lamp, a dimming power adapter, an alternating current input lead and a single dimming signal wire; the LED lamp is respectively connected with the dimming power adapter, the alternating current input lead and the single dimming signal wire; the dimming power adapter is connected with an external controller through a wire, the external controller comprises a controller shell and a dimming input and output serial port DIM-OU arranged on the controller shell, and the dimming input and output serial port DIM-OU is provided with an RJ-12 connector as a universal serial port and an AC power supply interface for transmission; the dimming power adapter comprises an adapter shell, a PCB circuit board, a rectifying circuit driver and a current control unit; the PCB circuit board, the rectifier circuit driver and the current control unit are all arranged in the adapter shell; the current control unit comprises a current adjusting unit, a voltage and frequency follower, a dimming module, a dimming signal transmission line and an external dimming line; the current adjusting unit comprises a microprocessor, a sampling resistor, a voltage feedback loop and a current feedback loop, wherein the sampling resistor RS1 is connected with a current detection port of the microprocessor, and the voltage feedback loop and the current feedback loop are respectively arranged at the pin position of the microprocessor for voltage feedback and current sampling feedback; the voltage and frequency follower comprises an integrated operational amplifier; the dimming module is connected with the integrated operational amplifier and the current adjusting unit, and the external dimming line is connected with the external controller. The LED lamp is connected with the dimming power adapter through a wire. The input voltage width of the dimming power adapter is 100-300VAC wide-voltage input, and the output voltage is controlled to be 24-50V.

When a single dimming signal line voltage U is loaded between the a end and the common end of the operational amplifier, the voltage at the common end is zero, and when the actual voltage direction is higher than the voltage at the common end of the operational amplifier from the a end of the operational amplifier, the actual voltage difference direction of the output voltage U points to the O end from the common end, that is, the phase directions of the two are opposite. When an input voltage U + is added between the b + end and the common end of the operational amplifier, the actual voltage directions of the U and the U + are exactly the same relative to the common end; the dimming signal transmitted by the external dimming line has no phase characteristic, the transmitted signal can be a PWM or binary digital signal, the signal does not need safety isolation processing due to low-voltage transmission, and the voltage and frequency follower synchronizes a weak signal to the microprocessor to identify the switch and the dimming signal through a specific program. The external controller is a device for generating dimming signal, the output signal can be PWM or binary digital signal, the digital signal has no phase characteristic, the voltage for controlling frequency variation is 0-5V, the control current is less than 1mA, the control voltage is varied at 0-5V, and the output of the dimming source generator is varied between 100Hz to 20 KHZ. The voltage and frequency follower is used for monitoring and identifying signal change transmitted by an external controller through a single wire, a pin I/O port or an A/D port of the microprocessor of the voltage and frequency follower is communicated with a dimming line, and the dimming module sends a corresponding PWM model to the current control unit according to the detected change of the digital signals of the PWM and the binary system, so that the output current characteristic is changed. The dimming signal transmission line comprises but is not limited to RJ12 or other commercially available universal connectors, an external controller is connected with the lamp adapter through the line, the outside of the wire is provided with a traditional insulating rubber, and the wire core is made of copper or aluminum and used for transmitting signals. The dimming signal transmitted by the external dimming line comprises a PWM or binary digital signal, the voltage with variable frequency is 0-5V, the control current is less than 1mA, and the variation range is 100Hz to 20 KHZ. The external controller provides a PWM or binary digital signal, the voltage and frequency follower in the power circuit collects and receives the PWM or binary digital signal input by the dimming line to process, the microprocessor converts the PWM or binary digital signal, and the dimming module controls the change of the current.

The pulse type driving chip is arranged in the rectifier circuit driver, the frequency is very high through a pulse component, so human eyes can not feel LED stroboflash at all, the mode not only accords with the visual requirement, but also effectively saves the electric energy output on the one hand, and the working frequency of the type of chip can be generally controlled by an external interface, the low-voltage single-line series dimming LED illuminating device can carry out dimming transmission through a single line through a single dimming line and an alternating current input lead, so that the manufacturing material and construction cost of an LED lamp can be greatly reduced, the practicability of the low-voltage single-line series dimming LED illuminating device is improved, the low-voltage single-line series dimming LED illuminating device can dim the LED lamp by arranging a current adjusting unit, a voltage and frequency follower, a dimming module, a dimming line and an external dimming source generator, the problem of current low pressure single line series connection LED lighting device of adjusting luminance, unable LED lamp adjust luminance to the LED lamp can't use under different conditions is solved.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a novel LED lighting device that low pressure single line series connection was adjusted luminance which characterized in that: the LED lighting device comprises a dimming system, a light source and a light source, wherein the dimming system comprises an LED lamp, a dimming power adapter, an alternating current input lead and a single dimming signal wire; the LED lamp is respectively connected with the dimming power adapter, the alternating current input lead and the single dimming signal wire; the dimming power adapter is connected with an external controller through a wire, the external controller comprises a controller shell and a dimming input and output serial port DIM-OU arranged on the controller shell, and the dimming input and output serial port DIM-OU is provided with an RJ-12 connector as a universal serial port and an AC power supply interface for transmission; the dimming power adapter comprises an adapter shell, a PCB circuit board, a rectifying circuit driver and a current control unit; the PCB circuit board, the rectifier circuit driver and the current control unit are all arranged in the adapter shell; the current control unit comprises a current adjusting unit, a voltage and frequency follower, a dimming module, a dimming signal transmission line and an external dimming line; the current adjusting unit comprises a microprocessor, a sampling resistor, a voltage feedback loop and a current feedback loop, wherein the sampling resistor RS1 is connected with a current detection port of the microprocessor, and the voltage feedback loop and the current feedback loop are respectively arranged at the pin position of the microprocessor for voltage feedback and current sampling feedback; the voltage and frequency follower comprises an integrated operational amplifier; the dimming module is connected with the integrated operational amplifier and the current adjusting unit, and the external dimming line is connected with the external controller.

2. The novel low-voltage single-line series dimming LED lighting device as claimed in claim 1, wherein: the LED lamp is connected with the dimming power adapter through a wire.

3. The novel low-voltage single-line series dimming LED lighting device as claimed in claim 1, wherein: the input voltage width of the dimming power adapter is 100-300VAC wide-voltage input, and the output voltage is controlled to be 24-50V.