KR20150069717A - Color and dimming control method of LED illumination light by power switch operation - Google Patents

Abstract

The present invention relates to a method for controlling a color of LED lighting and dimming thereof by manipulating a power switch and more specifically, to a method for controlling a color of LED lighting and a brightness thereof as a user desires by manipulating a power on/off switch without a separate controller or a dimming controller. The method for controlling a color of LED lighting and dimming thereof comprises the steps of: configuring a LED module composed of a plurality of LED module units capable of emitting different colors; MICOM recognizing an initial OFF->ON manipulation of an AC power switch capable of supplying or cutting off a power source to the LED module or an OFF->ON manipulation after the initial manipulation, and performing sequentially a dimming control of an LED module unit; MICOM recognizing an OFF->ON manipulation within a time limit of the AC power switch while performing a dimming control of the LED module unit, and storing the LED module unit and a brightness at the manipulation time; maintaining the brightness of the LED module unit which are stored by the MICOM; and upon manipulation of turning ON of the AC power switch after turning off the LED module, the LED module unit, which is stored by the MICOM, turning on and maintaining the stored brightness.

Description

[0001] The present invention relates to a method of controlling the color and dimming of an LED illumination light by a power switch operation,

The present invention relates to a method of controlling the color and dimming of an LED lighting light by operating a power switch, and more particularly, to a color and dimming control method of an LED lighting light by a power switch, And a method of adjusting the brightness.

Registered gates embodied by light emitting diodes (LEDs) are driven with less power than typical lamps.

LED regulators can be produced in a variety of ways by controlling the flashing sequence, emission color, brightness (dimming), etc. of LEDs arranged in a large number.

Such LED lighting fixtures are mainly carried out by general lighting of interior decorations, mood lighting for directing a specific atmosphere, and advertisement lighting of shops.

 Generally, an LED regulator consists of an LED module that emits light of a certain color and a control circuit that controls the color, blinking state, and brightness (dimming) of light emitted from the LED module.

In addition, the control circuit of the LED regulator includes a power supply unit which converts the power supplied from the outside into voltage and current suitable for the LED module and the control circuit.

The LED module is formed by mounting a plurality of LED elements on a circuit board (mainly a PCB) in a predetermined arrangement. The LED element may emit light of a single color or may selectively emit various colors according to an external electric / Can be applied.

The control circuit outputs a signal for controlling operations such as a flashing sequence, a light emission color, and a brightness (dimming) for a plurality of LEDs.

For example, Korean Patent Laid-Open No. 10-2011-0092156 discloses a device for controlling the brightness of an LED regulator, which includes PWM control, ambient illumination detection, a PFC circuit and a lighting delay circuit, Off of the motor is controlled stably.

However, the above-mentioned prior art detects the illuminance according to the amount of ambient light and detects the ambient illuminance to automatically control the brightness. However, this has a problem that the production cost is large and the user can not control the brightness desired by him.

In addition, recent registered detentions are applied not only to turning on and off but also to freely adjust the brightness to a desired level.

For example, when the user adjusts the brightness of a light by operating a dimming switch (hereinafter referred to as an 'controller') installed on a wall by hand, or by using a wireless remote controller for dimming dimming (hereinafter referred to as a dimming remote controller) In this case, too, there is a problem that production costs are incurred because a separate manipulator or a remote controller for dimming must be provided.

Published Patent Application No. 10-2011-0092156 (Aug. 17, 2011) Japanese Patent Application Laid-Open No. 10-2013-0012996 (February 06, 2013)

The present invention has been made in order to solve the above-described problems, and it is an object of the present invention to provide a lighting apparatus and a lighting apparatus capable of adjusting the color and brightness of a LED lighting light desired by a user only by turning ON / And a method of controlling the color and dimming of the LED illumination light by operating the power switch capable of reducing the manufacturing cost.

According to an aspect of the present invention, there is provided a method of controlling color and dimming of an LED lighting light by operating a power switch, the method comprising: (a) configuring an LED module with a plurality of unit LED modules emitting different illumination lights;

(b) sequentially performing the dimming control of the unit LED module by identifying the first OFF-> ON operation or the subsequent OFF-> ON operation and time of the AC power switch for supplying or interrupting power to the LED module by the microcomputer, ;

(c) storing the unit LED module and brightness at the time of operation by identifying the OFF-to-ON operation of the AC power switch within a time limit while sequentially performing dimming control of the unit LED module;

(d) maintaining the brightness of the unit LED module stored in the microcomputer; And

(e) when the AC power switch is turned on again after the LED module is completely turned off, controlling the unit LED module stored in the microcomputer so as to maintain the stored brightness; .

According to the solution of the above-described problem, the color and brightness of the LED illumination light desired by the user can be adjusted only by the ON / OFF operation of the power switch without using a separate manipulator or remote controller for dimming, so that the circuit can be easily configured, have.

1 is a configuration diagram of a system to which a control method according to an embodiment of the present invention is applied.
FIG. 2 is a flowchart illustrating a method of controlling color and dimming according to the first embodiment of the present invention.
3 is a flowchart illustrating a method of controlling color and dimming according to a second embodiment of the present invention.
4 is a flowchart illustrating a method of controlling color and dimming according to a third embodiment of the present invention.
5 and 6 are graphs showing the waveform of the power switch and the brightness of the LED lamp according to the embodiment of FIG.
7 is a graph showing the waveform of the power switch and the brightness of the LED lamp according to the embodiment of FIG.
8 is a graph showing the waveform of the power switch and the brightness of the LED lamp according to the embodiment of FIG.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

It is to be noted that the same components of the drawings are denoted by the same reference numerals and symbols as possible even if they are shown in different drawings.

In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

1 is a schematic configuration diagram of a system to which a control method according to an embodiment of the present invention is applied.

1, the system includes an AC power switch 2, a lightning protection unit 3, a filter unit 4, a rectifying / smoothing unit 5, a PWM constant current unit 6, a microcomputer 7, 1 LED module control unit 8, the second LED module control unit 9, the constant current correction unit 10, the PWM IC operation control unit 11, the input waveform unit 12, the firmware storage connector 13 and the LED module 14 .

For example, AC 80 ~ 260V power supply is used as input power to the system.

The AC power switch (2) is an ON / OFF switch that is generally used to turn on the LED module (14).

The lightning protection unit 3 minimizes the voltage introduced into the AC power line through a varistor or a thermistor to protect the circuit at the rear end.

The filter unit 4 prevents the noise due to the specific frequency generated at the rear end from being transmitted to the AC power supply line due to the capacitance value of the inductor and the capacitor.

The rectifying / smoothing unit 5 converts the AC power input from the outside into DC power, and smoothes the pulsation included in the DC power using a condenser or the like.

The LED module 14 includes a first LED module 14a of a cool system and a second LED module 14b of a warm system, for example. Each of the LED modules 14a and 14b includes a plurality of LEDs are serially connected in parallel and controlled by the first LED module control unit 8 and the second LED module control unit 9, respectively.

Here, the LED module is described as being composed of two LED modules, but the LED module may be composed of more than two LED modules.

The microcomputer 7 stores software for controlling the color and dimming of the LED module 14 and generates a control signal for controlling the color and dimming of the LED module 14 according to the output power of the PWM constant current unit 6. [ And the PWM constant current section 6 PWM-controls the current width of the output power of the rectifying / smoothing section 5 through the PWM IC operating section 11 driven by the control signal.

PWM control is a method of controlling the ratio (duty ratio) of the pulse width by supplying the current in a pulsed manner with a constant voltage.

The microcomputer 7 identifies whether the AC power switch is ON or OFF by the input waveform from the input waveform section 12 and controls the first LED module control section and the second LED module control section and then controls the PWM IC operation control section 11 The PWM constant current unit 6 is driven to supply the constant voltage and the constant current to the LED module 14 according to the design.

Thus, the color and brightness of the LED illumination light corresponding to the control of the first LED module control unit 8 and the second LED module control unit 9 are operated.

Reference numeral 10 denotes a constant current correction circuit for correcting the constant current and the constant voltage in accordance with the operation setting so as to be applied to the PWM constant current section 6 and 11 is a firmware storage connector.

Depending on how the color and brightness control software is programmed in the microcomputer 7, the color and brightness of the LED illumination light can be adjusted in various ways as described below.

Instead of the microcomputer 7, a general device or a transistor TR may be provided to identify the ON / OFF operation time and sequence of the AC power switch 2 through the input waveform section 12. [

FIG. 2 is a flowchart showing a method of controlling color and dimming according to a first embodiment of the present invention, and FIGS. 5 and 6 are graphs showing waveforms of a power switch and brightness of an LED lamp according to the embodiment of FIG.

When the AC power switch 2 is turned on for the first time (S202) after implementing the system as shown in FIG. 2, the microcomputer 7 controls the AC power switch 2 ) To control the output so that the first and second LED modules 14a and 14b maintain the maximum brightness (S204).

As a result, as shown in the section " a " in Figs. 5 and 6, all of the first and second LED modules are turned on at the maximum brightness, and the maximum brightness is maintained when the AC power switch 2 is not turned off.

When the user performs the ON operation of the AC power switch 2 (S208) within the time limit (for example, 0.2 to 0.5 seconds or 1.0 second) after the OFF operation of the AC power switch 2 is performed (S206) 7 identifies this as a setting start signal through the input waveform section 12 and controls the dimming of the first LED module 14a and / or the second LED module 14b step by step during the set time step by step (S210) .

The microcomputer 7 controls the first LED module 14a to dim the dimming of the first LED module 14a step by step through the first LED module controller 8 so that the first LED module 14a It gradually becomes brighter from minimum brightness to maximum brightness.

In the absence of the OFF operation of the AC power switch 2 during the setting time until the first LED module 14a is maximized at the minimum brightness, the first LED module 14a is darkened to the minimum brightness faster than the brightness The microcomputer 7 controls the second LED module 14b to gradually dim the dimming of the second LED module 14b through the second LED module controller 9 as shown in a section c of FIG. 5, It gradually becomes brighter from minimum brightness to maximum brightness.

In the absence of the OFF operation of the AC power switch 2 during the setting time until the second LED module 14b becomes maximum at the minimum brightness, the second LED module 14 is darkened to the minimum brightness faster than the brightness The microcomputer controls the dimming of the first and second LED modules 14a and 14b to gradually increase in brightness through the first and second LED module control units 8 and 9, , The 2LED modules 14a and 14b are gradually brightened from the minimum brightness to the maximum brightness.

In the absence of the OFF operation of the AC power switch 2 during the set time until each of the first and second LED modules 14a and 14b becomes maximum at the minimum brightness, the first and second LED modules 14a and 14b The second LED module 14a and / or the second LED module 14b are turned on at a minimum brightness faster than the brightness of the AC power switch 2, so that the brightness of the AC power switch 2 during the set time until the brightness of the first LED module 14a and / If there is no OFF operation, the sections b, c, and d of FIG. 5 are performed.

That is, the first and second LED modules 14a, 14b are sequentially or individually controlled in order to control the dimming of the first LED module 14a in stages, the dimming control of the second LED module 14b is performed in stages, , And 14b.

The maximum brightness of the first LED module 14a and the second LED module 14b or the number of steps from the minimum brightness to the maximum brightness may be arbitrarily adjusted at design time and the dimming may be controlled from the maximum brightness to the minimum brightness.

6, the microcomputer 7 controls the operation of the first and second LED modules 14a and 14b through the first and second LED module control units 8 and 9, as shown in section b of FIG. 6, The first and second LED modules 14a and 14b are gradually brightened from the minimum brightness to the maximum brightness by controlling the dimming to be gradually brightened.

In the absence of the OFF operation of the AC power switch 2 during the set time until the first and second LED modules 14a and 14b are maximized at the minimum brightness, the first and second LED modules 14a and 14b are turned on The microcomputer 7 controls the dimming of the first LED module 14a to be gradually brighter through the first LED module controller 8 as shown in a section c in FIG. 6, So that the first LED module 14a is gradually brightened from the minimum brightness to the maximum brightness.

In the absence of the OFF operation of the AC power switch 2 during the setting time until the first LED module 14a is maximized at the minimum brightness, the first LED module 14a is darkened to the minimum brightness faster than the brightness The microcomputer 7 controls the second LED module 14b to gradually dim the dimming of the second LED module 14b through the second LED module controller 9 as shown in the section d of FIG. 6, As time goes on, it gradually becomes brighter from the minimum brightness to the maximum brightness.

In the absence of the OFF operation of the AC power switch 2 during the setting time until the second LED module 14b becomes maximum at the minimum brightness, the second LED module 14b is darkened to the minimum brightness faster than the brightness If the OFF operation of the AC power switch 2 is not performed during the set time until the first LED module 14a and / or the second LED module 14b becomes maximum at the minimum brightness, , and d.

That is, stepwise dimming control of the first and second LED modules 14a and 14b, step-by-step dimming control of the first LED module 14a, and step-by-step dimming control of the second LED module 14b are sequentially performed.

The maximum brightness of the first LED module 14a and the second LED module 14b or the number of steps from the minimum brightness to the maximum brightness may be arbitrarily adjusted at design time and the dimming may be controlled from the maximum brightness to the minimum brightness.

(For example, 0.2 to 0.5 seconds or 1.0 second) after the AC power switch 2 is turned OFF during the set time of the first LED module 14a and / or the second LED module 14b (S212) When the AC power switch 2 is turned on (S214), the microcomputer 7 identifies the AC power switch 2 as a setting signal through the input waveform section 12, and recognizes the corresponding LED module at that point in time and the brightness (S216), and maintains the brightness of the corresponding LED module until the AC power switch 2 is operated (S218).

For example, when the AC power switch 2 is turned on within a predetermined time period b 'of the section b in FIG. 5 and then the AC power switch is turned on within the time limit, the LED module, that is, (Brb ') of the second LED module 14a and the first LED module 14a, and maintains the brightness thereof.

When the AC power switch 2 is turned OFF by turning OFF the AC power switch 2 and then the AC power switch 2 is turned ON again after the lapse of time, the microcomputer 7 controls the first LED module controller 8 And controls the first LED module 14a to maintain the stored brightness (brb ').

If the AC power switch 2 is turned ON within the time limit after the AC power switch 2 is turned OFF in the b "detail period of the section b of FIG. 6, the LED module at the time tb" (Brb ") of the 2LED modules 14a and 14b and the first and second LED modules 14a and 14b, and keeps the brightness thereof.

The AC power switch 2 is turned off to turn off the first and second LED modules 14a and 14b and then the AC power switch 2 is turned on again. (S203), the output of the first and second LED modules 14a and 14b is controlled so as to maintain the brightness brb 'through the first and second LED module controllers 8 and 9 (S218).

If the ON operation is performed within a time limit after the AC power switch is turned OFF while the brightness of the corresponding LED module is maintained in the step S218, the microcomputer 7 identifies it through the input waveform section 12 and stores it After the brightness (brb ") values of the first and second LED modules 14a and 14b and the first and second LED modules 14a and 14b are deleted (S221), the process returns to step S203, Color) and brightness can be set.

If it is determined in step S208, step S214, and step S219 that there is no ON operation of the AC power switch 2 within the time limit, control is performed so that the corresponding LED module is turned off (S220)

As described above, the color can be selected by the LED module stored at the time of the OFF / ON operation of the AC power switch 2, and dimming can be controlled by the stored brightness.

FIG. 3 is a flowchart illustrating a method of controlling color and dimming according to a second embodiment of the present invention, and FIG. 7 is a graph illustrating a waveform of a power switch and brightness of an LED lamp according to the embodiment of FIG.

Unless the OFF-> ON operation is performed within the time limit until the illumination is turned off like the ordinary LED module 14 after turning on the AC power switch 2 for the first time in the first embodiment shown in Fig. 2, The color and dimming control function of the LED module 14 can not be known.

3, when the AC power switch 2 is turned on for the first time (S302) after the system as shown in FIG. 1 is implemented, the microcomputer 7 receives the AC power through the input waveform section 12, After identifying the ON operation of the switch 2 and waiting for a predetermined time (S304) (section a in FIG. 7), the microcomputer 2 recognizes the start of setting itself and sequentially recognizes the first LED module 14a and / And controls the dimming of the module 14b step by step (S306).

The microcomputer 7 controls the second LED module 14b to gradually dim the dimming of the second LED module 14b through the second LED module controller 9, as shown in section b of FIG. 7, It gradually becomes brighter from minimum brightness to maximum brightness.

In the absence of the OFF operation of the AC power switch 2 during the setting time until the second LED module 14b becomes maximum at the minimum brightness, the second LED module 14b is darkened to the minimum brightness faster than the brightness The microcomputer 7 controls the dimming of the first LED module 14a to gradually increase in brightness through the first LED module control unit 8 so that the first LED module 14a It gradually becomes brighter from minimum brightness to maximum brightness.

In the absence of the OFF operation of the AC power switch 2 during the setting time until the first LED module 14a is maximized at the minimum brightness, the first LED module 14a is darkened to the minimum brightness faster than the brightness The microcomputer 7 controls the dimming of the first and second LED modules 14a and 14b to be gradually brighter through the first and second LED module control units 8 and 9, The first and second LED modules 14a and 14b are gradually brightened from the minimum brightness to the maximum brightness over time.

In the absence of the OFF operation of the AC power switch 2 during the set time until the first and second LED modules 14a and 14b are maximized at the minimum brightness, the first and second LED modules 14a and 14b are turned on The OFF operation of the AC power switch 2 during the set time until the first LED module 14a and / or the second LED module 14b is brightest at the minimum brightness at the maximum brightness, If there is not, the section b, c, d of FIG. 7 is performed.

That is, the step-by-step dimming control of the second LED module 14b, the step-by-step dimming control of the first LED module 14a, and the step-by-step dimming control of the first and second LED modules 14a and 14b are sequentially performed.

The maximum brightness of the first LED module 14a and the second LED module 14b, the number of steps from the minimum brightness to the maximum brightness, or the order and number of repetitions of the LED module may be arbitrarily adjusted at the time of designing.

After the AC power switch 2 is turned OFF during the set time of the first LED module 14a and / or the second LED module 14b (S308). When the AC power switch 2 is turned ON within a time limit (for example, 0.2 to 0.5 seconds or 1.0 second) (S310), the microcomputer 7 identifies this through the input waveform section 12 and recognizes it as a setting signal , The brightness of the corresponding LED module at that point in time and the brightness of the corresponding LED module are stored (S312), and the output is controlled so as to maintain the brightness of the corresponding LED module until the AC power switch 2 is operated (S314 ).

For example, when the AC power switch 2 is turned on within a predetermined time period c 'of the section c in FIG. 7 and then the AC power switch is turned on within the time limit, the LED module, that is, (Brc ') of the first LED module 14a, and controls the output so as to keep the brightness thereof.

When the AC power switch 2 is turned OFF by turning OFF the AC power switch 2 and then the AC power switch 2 is turned ON again after the lapse of time, the microcomputer 7 controls the first LED module controller 8 And controls the first LED module 14a to maintain the stored brightness (brc ').

If the ON operation is performed within the time limit after the AC power switch 2 is turned OFF while the brightness of the corresponding LED module is maintained in step 314, the microcomputer 7 identifies this through the input waveform section 12, It is recognized that the setting is started, and the process returns to step S306, and the LED module (color) and brightness can be set by performing the following steps.

If the AC power switch 2 is not turned on within the time limit in step S310, the controller controls the LED module to be turned off (S316).

In this way, the LED module stored at the time of operation of the AC power switch (2) can select a color, and dimming can be controlled by the stored brightness.

FIG. 4 is a flowchart illustrating a method of controlling color and dimming according to a third exemplary embodiment of the present invention, and FIG. 8 is a graph illustrating a waveform of a power switch and brightness of an LED lamp according to the exemplary embodiment of FIG.

4, when the AC power switch 2 is turned on for the first time (S402) after the system as shown in FIG. 1 is implemented, the microcomputer 7 controls the AC power switch 2 through the input waveform section 12, And controls the output so that the first and second LED modules 14a and 14b maintain the maximum brightness (S404).

As a result, as shown in the section a of FIG. 8, all of the 1.2LED modules 14a and 14b are turned on at the maximum brightness, and when the AC power switch 2 is not turned off, the maximum brightness is maintained.

When the user repeats the operation of turning on and off the AC power switch 2 within the time limit one or more times (S406) while all of the first and second LED modules 14a and 14b maintain the maximum brightness, The control unit 7 identifies the number of times of the OFF-to-ON operation of the AC power switch 2 through the input waveform unit 12 and controls the output so that the corresponding LED module maintains the maximum brightness through the LED module control unit according to the number of operations (S408).

For example, as shown in (1) of FIG. 8, when the number of OFF-> ON operations is once, the first LED module 14a controls the output so that the first LED module 14a maintains the maximum brightness through the first LED module controller 8, The maximum brightness of the first LED module 14a is stored in the microcomputer 7 at step S410 and then the AC power switch 2 is turned on so that the first LED module 14a is turned on at the maximum brightness do.

If the number of times of the OFF-> ON operation is twice as shown in (2) of FIG. 8, that is, when the AC power switch 2 is operated from 0FF-> ON-> 0FF-> ON, the second LED module control unit 9 The second LED module 14b maintains the maximum brightness by controlling the output so that the second LED module 14b maintains the maximum brightness (S410), and the maximum brightness of the second LED module 14b is stored in the microcomputer 7 itself Then, when the AC power switch 2 is turned on, the second LED module 14b is turned on at the maximum brightness.

If the number of OFF-> ON operations is three as shown in (3) of FIG. 8, that is, when the operation is performed from 0FF-> ON-> 0FF-> ON-> OFF-> ON, The output of the first and second LED modules 14a and 14b is controlled to maintain the maximum brightness so that the first and second LED modules 14a and 14b maintain the maximum brightness and the brightness of the first and second LED modules 14a and 14b When the AC power switch 2 is turned on, the first and second LED modules 14a and 14b are turned on at the maximum brightness by self-storing the maximum brightness in the microcomputer 7 (S410).

In step S406, the microcomputer 7 repeatedly performs one or more operations of turning on and off the AC power switch 2 within the time limit while the LED module maintains the maximum brightness in step S408. (2) the number of OFF-to-ON operations of the AC power switch (2) through the LED controller (12) and controls the output so that the corresponding LED module maintains the maximum brightness through the corresponding LED module controller according to the number of operations.

If the user does not perform the ON operation within the time limit after the AC power switch 2 OFF operation (S412) in step S406, the LED module is turned off (S414).

In this embodiment, the maximum brightness can be maintained by selecting a color without dimming function of the LED illumination light.

Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims. In addition, it is a matter of course that various modifications and variations are possible without departing from the scope of the technical idea of the present invention by anyone having ordinary skill in the art.

2: AC power switch 7: Microcomputer
8.9: LED module control section 12: input waveform section
14a, 14b: LED module

Claims (9)

(a) constructing an LED module with a plurality of unit LED modules emitting different illumination lights;
(b) sequentially performing the dimming control of the unit LED module by identifying the first OFF-> ON operation or the subsequent OFF-> ON operation of the AC power switch that supplies or blocks the LED module with the microcomputer;
(c) during the dimming control of the unit LED module, sequentially performing the OFF-to-ON operation within the time limit of the AC power switch by the microcomputer and storing the unit LED module and the brightness at the time of operation;
(d) maintaining the brightness of the unit LED module stored in the microcomputer; And
(e) when the AC power switch is turned on again after the LED module is completely turned off, controlling the unit LED module stored in the microcomputer so as to maintain the stored brightness; And controlling the color and dimming of the LED illumination light by the power switch operation. The method according to claim 1,
Wherein the microcomputer controls all of the plurality of unit LED modules to be turned on to maintain the maximum brightness during the first OFF-> ON operation of the AC power switch in the step (b) And dimming control method. 3. The method of claim 2,
In the step (b), if there is an OFF-> ON operation within a time limit of the AC power switch while all of the unit LED modules maintain the maximum brightness, the microcomputer controls the dimming of the unit LED module step by step How to Control the Color and Dimming of LED Lighting Light by Power Switch Operation. The method according to claim 1,
Wherein the microcomputer controls the unit LED module dimming step by step after the microcomputer waits for a predetermined time during the first OFF-> ON operation of the AC power switch in the step (b) And dimming control method. The method according to claim 3 or 4,
And controlling the dimming of the unit LED module in steps from the minimum brightness to the maximum brightness or controlling the dimming of the unit LED module in steps from the maximum brightness to the minimum brightness in the step (b) . The method according to claim 3 or 4,
If there is OFF-> ON operation within the time limit of the AC power switch while maintaining the brightness of the unit LED module stored in the step (d) or step (e), the microcomputer identifies the ON- And the step (b) is further performed after the step (b) is performed. The method according to claim 1,
In the step (b), the microcomputer controls all of the plurality of unit LED modules to be turned on to maintain the maximum brightness during the first OFF-> ON operation of the AC power switch,
When the OFF-to-ON operation within the time limit of the AC power switch is repeated one or more times while all of the unit LED modules maintain the maximum brightness, control is performed such that the maximum brightness of the unit LED module dimming is maintained according to the number of operations And controlling the color and dimming of the LED lighting light by the power switch operation. The method according to claim 1,
Wherein the dimming control of the unit LED module is sequentially performed by combining each unit LED module and the unit LED module in the step (b). The method according to any one of claims 1 to 4, 7 to 8,
Wherein at least two LED modules are provided as the plurality of unit LED modules, and the dimming control of each LED module is sequentially performed by turning on and off the AC power switch in the step (b) Method of controlling the color and dimming of LED lighting light by means of.

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