KR20090116390A - Illumination apparatus and control method thereof - Google Patents

Abstract

PURPOSE: A lighting device and a control method thereof are provided to select a lighting mode suitable for an operation condition by controlling a current applied to LED modules having different phosphor. CONSTITUTION: A lighting device includes an LED part, an LED driver part(150), and a main processing unit. The LED part has a plurality of LED modules. The LED modules have different phosphor. The LED driver part controls the LED modules according to a channel. The main processing unit controls the LED driver part according to an external control signal in order to control a color temperature of each LED module. The main processing unit receives the external control signal through RF communication, wire network, or Bluetooth communication.

Description

ILLUMINATION APPARATUS AND CONTROL METHOD THEREOF}

The present invention relates to a lighting apparatus and a control method thereof, and more particularly, to a lighting apparatus and a control method thereof for providing a user to select the functionally suitable lighting conditions for each operation.

In general, an electric stand is a lighting device that uses a given color of light as it is. When the light color of these lighting devices is adjusted, it may be a lamp that can reduce eye fatigue and increase reading power. An electric stand uses an incandescent lamp, a fluorescent lamp, a three-wavelength lamp, a CCFL as a light source, and recently, a high brightness LED lamp is also used as a stand light source. Light color refers to the color indicated by the light source when the light source is viewed. The color of incandescent bulbs is red and that of fluorescent lamps is white. Among fluorescent light, dimming fluorescent light includes blue light rather than white fluorescent light.

Color temperature is a value indicating whether the color tone of the light is red or blue. The color temperature is a physical value of the color of light emitted from the light source. If the color temperature is low, the warm color is close to orange, and as the color temperature increases, the color becomes white like the daylight sunlight. The higher the color temperature, the cooler the blue light. Blue sky is 11000 ~ 20000 K, clouded sky is 6500 K, white fluorescent lamp light is 4200 K, candle flame is 2000 K.

Color temperature can be divided into three groups. Warm light color temperature is 3300 K (K is Kelvin), medium color temperature is 3300 ~ 5000 K, orange color temperature is 5000 K or more. The color rendering may be different even if the light color is the same because the wavelength configuration of the light source is different.

On the other hand, a lighting device implemented by a light emitting diode (LED) is driven with less power consumption than a general lamp. In particular, the lighting apparatus may perform various productions by controlling the blinking order, the emission color, the brightness, and the like of a plurality of arranged LEDs. Such lighting apparatuses are mainly implemented as general lightings for indoor interiors, mood lightings for creating a specific atmosphere, advertisement lightings for shops, and the like.

Therefore, the technical problem of the present invention has been made in view of this point, an object of the present invention is to provide a lighting apparatus for providing a user can select the functionally suitable lighting conditions for each operation.

Another object of the present invention is to provide a control method of the above-described lighting apparatus.

In order to realize the above object of the present invention, a lighting apparatus according to an embodiment includes a plurality of LED modules, an LED driver and a main processing unit. The LED modules have different phosphors. The LED driver controls the LED modules for each channel. The main processing unit controls the current supplied to the LED module by the LED driver unit according to a control signal supplied from the outside to separately control the color temperature of each of the LED modules.

In the present embodiment, the main processing unit may PWM control the LED driver.

In the present embodiment, the main processing unit may receive the control signal through any one of wireless communication using RF, wired network and wireless communication using Bluetooth.

In this embodiment, the LED module includes a blue white LED module including at least one blue white LED, a yellow white LED module including at least one yellow white LED, and at least one green white LED. It may include a greenish white LED module and an amberish white LED module comprising one or more ambers white LEDs.

According to another aspect of the present invention, there is provided a method of controlling a lighting device, the method of controlling a lighting device using a lighting device having a plurality of LED modules having different phosphors, (a) the lighting device. Initializing the main processing unit of (b), (b) when a key signal is input, setting a function mode corresponding to the key signal, (c) displaying a touch key corresponding to the function mode, ( d) if the key signal is not input, checking whether the current function is the eye treatment mode, and (e) following the step (c), or if the current function is checked in the eye treatment mode in step (d). And controlling the operation of the LED modules to separately control the color temperature corresponding to the corresponding mode.

In the present embodiment, step (b) (b-1) if the key signal is checked as a power key, checking whether the power key is powered on or powered off, and (b-2) the In step (b-1), if it is checked to be powered on, setting the LED operation mode to the previous function mode; and (b-3) In step (b-1), if it is checked to be powered off, power is turned on. Turning off.

In the present embodiment, the step (b) (b-4) if the key signal is checked with the math mode key, setting the LED operation mode to the math mode, and (b-5) the key signal is caught If the mode key is checked, setting the LED operation mode to the magazine mode; (b-6) if the key signal is checked to the novel mode key, setting the LED operation mode to the novel mode; and (b-7 ) If the key signal is checked with a rest mode key, the LED operation mode is described as a rest mode; and (b-8) If the key signal is checked with an eye treatment mode key, the LED operation mode is set to an eye treatment mode. And (b-9) if the key signal is checked with the brightness mode key, setting the LED operation mode to the brightness mode.

According to such a lighting device and a control method thereof, a function key is assigned to be suitable for each operation, and a current setting applied to LED modules having different phosphors corresponding to the function key is programmed to be functional according to a user's selection. This allows you to choose the lighting mode that suits your working conditions.

Hereinafter, a lighting apparatus and a control method thereof according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

As the inventive concept allows for various changes and numerous modifications, the embodiments will be described in detail in the text. However, this is not intended to limit the present invention to a specific disclosed form, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. In describing the drawings, similar reference numerals are used for similar elements. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. The terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting of the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present application, the terms--including--or--consist--are intended to indicate that there is a feature, number, step, operation, component, part, or combination thereof described on the specification, one or It should be understood that no other features or numbers, steps, actions, components, parts, or combinations thereof are excluded in advance.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Do not.

In the description of the invention and in the claims, -1-, -2-, -3-and -4-are referred to to distinguish between different components. It is to be noted that the names may not coincide in the detailed description of the invention and the claims, regardless of the order of manufacture.

Hereinafter, with reference to the accompanying drawings, it will be described in detail the present invention.

1 is a block diagram illustrating a lighting apparatus according to an embodiment of the present invention. 2 is a plan view illustrating an example of the touch pad unit 120 illustrated in FIG. 1.

1 and 2, the lighting device 100 according to the embodiment of the present invention includes a power supply unit 110, a touch pad unit 120, a touch sensor 130, a main processing unit 140, and an LED driver. The unit 150 and the LED unit 160 is included.

The power supply 110 includes an AC-DC converter 112 for converting 220V AC power to a constant DC power, a power factor correction circuit (PFC) 114 for correcting a power factor of the DC power, and a switching mode power. Including a supply (SMPS) Switching Mode Power Supply (116), a constant DC power is switched to supply to the main processing unit 140, the LED driver 150 and the touch sensor 130. For example, about 5V of power is supplied to the processing unit 140 and the touch sensor 130, and about 24V of power is supplied to the LED driver 150.

In operation, the power supply unit 110 converts AC input AC power into a plurality of DC power sources through the power factor correction circuit 114 and the SMPS 116, and converts the converted DC power sources into the touch pad unit 120. ) And the touch sensor 130, the main processing unit 140, and the LED driver 150. For example, the power supply unit 110 supplies 5V DC power to the touch sensor 130 and the main processing unit 140, and provides 24V DC power to the LED driver 150.

The touch pad unit 120 includes a power control key 122, a math mode key 123, a magazine mode key 124, a novel mode key 125, a break mode key 126, a brightness mode key 127, and Eye treatment mode key 128 is included. The math mode by the math mode key 123 is an illumination mode for outputting light having a level of about 6,500K corresponding to the concentration enhancement and the logic power enhancement color. The magazine mode by the magazine mode key 124 is an illumination mode that outputs light having a level of approximately 5,500K corresponding to the color maximizing color in real white. The novel mode by the novel mode key 125 is an illumination mode that feels comfort and outputs light having a level of about 4,000K corresponding to an emotional index rising color. The resting mode by the resting mode key 126 is an illumination mode that outputs light having a level of about 3,000K corresponding to yellowish white, which is a tension relaxation color. The eye treatment mode by the eye treatment mode key 128 is an illumination mode that outputs light for eye movement for light therapy. The eye treatment mode key 128 includes a first treatment mode key, a second treatment mode key, a third treatment mode key, a fourth treatment mode key, and a fifth treatment mode key.

The touch sensor 130 detects a touch signal 121 applied from the touch pad unit 120 and provides a mode control signal 131 to the main processing unit 140.

The main processing unit 140 according to the control signal 131 provided from the touch sensor 130 to control the color temperature of each of the LED modules provided in the LED unit 160, the LED driver unit 150 controls the current to be supplied to each of the LED modules. Here, the main processing unit 140 controls the LED driver 150 by PWM. In addition, the main processing unit 140 may store the basic data for each chromaticity and brightness of the LED lighting device using different phosphors. Of course, the basic data may be stored in a separate memory to provide the stored basic data according to a request of the main processing unit 140.

The LED driver unit 150 has a circuit configuration such that the LED unit 160 operates at a constant current, and drives the LEDs provided in the LED unit 160 for each channel. The LED driver 150 includes a first LED driver, a second LED driver, a third LED driver, and a fourth LED driver.

The LED unit 160 includes a first LED module, a second LED module, a third LED module and a fourth LED module. The first LED module may correspond to a blue white LED module including one or more blue white LEDs. The second LED module may correspond to a yellowish white LED module including one or more yellowish white LEDs. The third LED module may correspond to a green white LED module including one or more green white LEDs. The fourth LED module may correspond to an amber white LED module including one or more amber white LEDs.

In the present embodiment, the color coordinate range of the blue white LED is x = 0.23 to 0.33, y = 0.25 to 0.35, and the color coordinate range of the yellow white LED is x = 0.4 to 0.5 and y = 0.39 to 0.49. In addition, the color coordinate range of the greenish white LED is x = 0.2 ~ 0.3, y = 0.49 ~ 0.49, and the color coordinate range of the tanish white LED is x = 0.42 ~ 0.52, y = 0.25 ~ 0.35.

The lighting device 100 according to an embodiment of the present invention may further include an IR motion sensor 170. For example, the IR motion sensor 170 which receives the infrared control signal may control the on / off of the lighting device by converting the control signal received in the infrared form into data and providing the data to the main processing unit 140. , Operation time and the like can also be controlled.

Lighting device 100 according to an embodiment of the present invention further includes an illumination sensor 180 for sensing the level of the external light in order to further add an automatic control function of the lighting device to reflect the change in the external environment to the lighting device. can do. For example, the illuminance sensor 180 may control the illuminance level of the lighting apparatus 100 by converting the detected signal into data and providing the data to the main processing unit 140.

Lighting device 100 according to an embodiment of the present invention may be provided with a control signal from the user through a wireless communication using RF, may be provided with a control signal from the user through a wireless network, such as Bluetooth, wired network It may be provided with a control signal from the user through.

Then, the blue white LED, the yellow white LED, the green white LED, and the tan brown white LED included in the LED unit 160 shown in FIG. 1 will be described.

3A is a representative spectrum illustrating a blueish white LED, and FIG. 3B is a representative CIE colorimeter illustrating a blueish white LED.

Referring to FIGS. 3A and 3B, a blue-white white LED implemented by a blue phosphor and a white LED has the highest relative density in the 450 nm wavelength band. In addition, it rapidly decreases as the wavelength increases, but gradually increases in the 500 nm wavelength band, and then gradually decreases as the wavelength increases after the relative density increases to the intermediate level of the maximum in the 550 nm wavelength band. On the other hand, it can be seen that the chromaticity range of the blue white LED is x = 0.23 to 0.33 and y = 0.25 to 0.35.

4A is a representative spectrum illustrating a yellowish white LED, and FIG. 4B is a representative CIE colorimeter illustrating a yellowish white LED.

4A and 4B, the yellowish white LED implemented by the yellow phosphor and the white LED gradually decreases as the wavelength increases after the relative density increases to 0.3 in the 450 nm wavelength band, and then increases again in the 500 nm wavelength band, and then increases again to 570 nm. It has the highest relative density in the wavelength band. Meanwhile, it can be seen that the chromaticity range of the yellowish white LED is x = 0.4 to 0.5 and y = 0.39 to 0.49.

5A is a representative spectrum illustrating a green white LED, and FIG. 5B is a representative CIE colorimeter illustrating a green white LED.

5A and 5B, the green white LED implemented by the green phosphor and the white LED decreases after a rapid increase in relative density to 0.7 in the 450 nm wavelength band and a maximum relative in the 530 nm wavelength band after a dozen increase in the 470 nm wavelength band. Has a density. On the other hand, it can be seen that the chromaticity range of the green white LED is x = 0.2 ~ 0.3, y = 0.39 ~ 0.49.

FIG. 6A is a representative spectrum illustrating an tanish white LED, and FIG. 6B is a representative CIE colorimeter illustrating an tanish white LED.

6A and 6B, a tanish white LED implemented by a tan phosphor and a white LED rapidly decreases as the wavelength increases after the relative density increases to 0.85 in the 450 nm wavelength band, and then increases again in the 500 nm wavelength band, and then increases to 600 nm. It has the highest relative density in the wavelength band. On the other hand, it can be seen that the chromaticity range of the yellowish brown white LED is x = 0.42 to 0.52 and y = 0.25 to 0.35.

FIG. 7 is a timing chart for explaining an example of PWM control of the lighting apparatus shown in FIG. 1.

1 and 7, each of the first to fourth LED drivers provided in the LED driver unit 150 controls the current provided to each of the first to fourth LED modules in a PWM manner. For example, the first LED module is controlled to supply current at 50% duty, the second LED module is controlled to supply current at 40% duty, and the third LED module is supplied at 60% duty. The fourth LED module is controlled to supply current at 20% duty.

Next, the color temperature changed by PWM control of the currents supplied to the yellowish white LED and the blueish white LED will be described below.

FIG. 8A is a color change spectrum according to a change in current applied to a yellowish white LED and a blueish white LED, and FIG. 8B is a CIE colorimeter illustrating a change in color temperature.

8A and 8B, when a high current is applied only to the yellowish white LED and no current is applied to the blueish white LED, it corresponds to the representative spectrum of the yellowish white LED shown in FIG. 3A. As the current applied to the yellowish white LED gradually decreases, and as the current applied to the blueish white LED gradually increases, the relative density in the 450 nm wavelength band gradually decreases, and the relative density in the 580 nm wavelength band gradually increases. . As a result, if a high current is applied only to the blue white LED, and no current is applied to the yellow white LED, it corresponds to the representative spectrum of the blue white LED shown in FIG. 4A.

As such, the current applied to the yellowish white LED and the blueish white LED can be confirmed that the color temperature and the color coordinate change as the PWM control is changed.

According to the PWM control, the color temperature change and the color coordinate change according to the current applied to the yellowish white LED and the blueish white LED are summarized in Table 1 below.

Referring to Table 1, when a current is applied only to the yellowish white LED and the current is applied to the blueish white LED, the color temperature is 3272K and the color coordinates are x = 0.441 and y = 0.452. In addition, when no current is applied to the yellowish white LED, and only current is applied to the blueish white LED, the color temperature is 7049K, and the color coordinates are x = 0.304 and y = 0.328.

Hereinafter, the color temperature changed by PWM control of the current supplied to the greenish white LED and the tanish white LED will be described.

9A and 9B are color change spectrums and CIE colorimeters corresponding to greenish white LEDs and tanish white LEDs, respectively.

9A and 9B, when high current is applied only to the greenish white LED, and no current is applied to the tanish white LED, it corresponds to the representative spectrum of the greenish white LED shown in FIG. 5A. As the current applied to the greenish white LED gradually decreases and the current applied to the tanish white LED gradually increases, the relative density gradually increases in the 450 nm wavelength band, and the relative density increases gradually in the 500 nm wavelength band. The relative density in the 600 nm wavelength band gradually decreases. Eventually, high current is applied only to the tanish white LED, and if no current is applied to the greenish white LED, it corresponds to the representative spectrum of the tanish white LED shown in Fig. 6A.

As such, it can be seen that the color temperature and the color coordinate change as the current applied to the greenish white LED and the tanish white LED is changed through PWM control.

According to the PWM control, the color temperature change and the color coordinate change according to the current applied to the greenish white LED and the yellowish brown white LED are summarized in Table 2 below.

Referring to Table 2, when the current is applied only to the yellowish-brown white LED, and if the current is applied to the greenish white LED, the color temperature is 1952K, and the color coordinates are x = 0.452 and y = 0.314. In addition, when no current is applied to the yellowish-brown white LED, only if the current is applied to the greenish white LED, the color temperature is 8374K, and the color coordinates are x = 0.249 and y = 0.434.

10 is a CIE color system of yellowish white LED, blueish white LED, greenish white LED and tanish white LED. In particular, the expression range of the color that can be implemented using four phosphors is indicated by a square box.

Referring to FIG. 10, since the color is expressed within a range not far from the white center, the basic function of direct lighting may be maintained. In addition, a subtle color expression can naturally produce colors without eye fatigue.

11 is a flowchart illustrating a method of controlling a lighting device using the LED lighting device.

Referring to FIG. 11, as the power of the LED lighting apparatus is turned on (step S50), the main control unit (MCU) is initialized (step S100).

Then, it is checked whether or not a key signal according to the user's operation (step S200).

If it is checked in step S200 that the key signal is input, the input touch key signal is checked (step S300).

Subsequently, the touch key checked in step S300 is displayed as a corresponding function key (step S400).

Subsequently, the lamp is controlled according to the function mode (step S500).

On the other hand, in step S200, if it is not checked by key input, it is checked whether the function is an eye treatment function (step S600), and if it is checked by eye treatment, step S500 is performed. Check (step S700).

In step S700, if it is not checked for power-off, it feeds back to step S200, and ends if it is checked for power-off.

FIG. 12 is a flowchart for explaining a touch key check step shown in FIG.

11 and 12, it is checked whether or not the touch key input by the user is the power key (step S305), and if it is checked that the touch key is power, it is checked whether or not it is powered on (step S310). ). In step S310, if the power is not checked, the power is turned off, and then step S400 is performed. In operation S310, when the corresponding touch key is checked to be powered on, the function of the lighting apparatus is determined as the previous function, and the operation S400 is performed.

In step S305, if the touch key is not checked in the power mode, it is checked whether the touch key is in the math mode (step S330). In step S330, if checked in the math mode, the function is switched to the math mode function, and step S400 is performed.

In step S330, if the touch key is not checked in the math mode, it is checked whether the touch key is the magazine mode (step S340). If the magazine mode is checked in step S340, the function is switched to the magazine mode function, and step S400 is performed.

If the touch key is not checked in magazine mode in step S340, it is checked whether the touch key is in novel mode (step S350). In step S350, if checked in the novel mode, the function is switched to the novel mode function, and step S400 is performed.

In step S350, if the corresponding touch key is not checked in the novel mode, it is checked whether the touch key is in the rest mode (step S360). In step S360, if checked in the break mode, the function is switched to the break mode function, and step S400 is performed.

In step S360, if the corresponding touch key is not checked in the rest mode, it is checked whether the corresponding touch key is in the eye treatment mode (step S370). In step S370, if the eye treatment mode is checked, the function is switched to the eye treatment mode function, and step S400 is performed.

In step S370, if the corresponding touch key is not checked in the eye treatment mode, it is checked whether the corresponding touch key is in the brightness mode (step S380). If the brightness mode is checked in step S380, the function is switched to the brightness mode function, and step S400 is performed.

FIG. 13 is a flowchart for explaining a function key illuminating step shown in FIG.

Referring to FIG. 13, it is checked whether or not the power is on (step S410), and if it is checked to be turned off, the function mode indicator is turned off (step S420), and then step S500 is performed.

In step S410, if it is checked to be power-on, it is checked whether the current function mode is the math function mode (step S430). If the math function mode is checked, the math function mode indicator is turned on (step S435). To perform.

In step S430, if the current function mode is not checked as the mathematical function mode, it is checked whether the current function mode is the magazine function mode (step S440), and when the magazine function mode is checked, the magazine function mode indicator is turned on (step S445), step S500 is performed.

In step S440, if the current function mode is not checked as the magazine function mode, it is checked whether the current function mode is the novel function mode (step S450), and when the novel function mode is checked, the novel function mode indicator is turned on (step S450). S455), step S500 is performed.

In step S450, if the current function mode is not checked as the novel function mode, it is checked whether the current function mode is the resting function mode (step S460), and when the resting function mode is checked, the resting function mode indicator is turned on (step S460). S465), step S500 is performed.

In step S460, if the current function mode is not checked as the resting function mode, it is checked whether the current function mode is the eye treatment function mode (step S470), and when the eye treatment function mode is checked, the eye treatment function mode indicator is turned on. Subsequently (step S475), step S500 is performed.

In step S470, if the current function mode is not checked as the eye treatment function mode, it is checked whether or not the current function mode is the brightness function mode (step S480). (Step S485), Step S500 is performed.

In step S480, if the current function mode is not checked as the brightness function mode, step S500 is performed.

14 is a flowchart for explaining the LED lamp control step shown in FIG.

Referring to FIG. 14, it is checked whether or not the power is on (step S510). If the power is turned off, the lamp is turned off (step S520), and then step S700 is performed.

If it is checked in step S510 that the power is turned on, it is checked whether or not the currently set function mode is the math function mode (step S520). If it is checked as the math function mode, the math function mode is performed (step S525). do.

If the mathematical function mode is not checked in step S520, it is checked whether or not the currently set function mode is a magazine function mode (step S530). If the magazine function mode is checked, the magazine function mode is performed (step S535). Do this.

If the magazine function mode is not checked in step S530, it is checked whether or not the currently set function mode is a novel function mode (step S540). If the novel function mode is checked, the novel function mode is performed (step S545), and then step S700. Do this.

If the novel function mode is not checked in step S540, it is checked whether the currently set function mode is the rest function mode (step S550), and if it is checked in the rest function mode, the rest function mode is performed (step S555). Do this.

If it is not checked in the resting function mode in step S550, it is checked whether the currently set function mode is the eye treatment function mode (step S560), and if the eye treatment function mode is checked, the eye treatment function mode is performed (step S570). , Perform step S700.

If the eye treatment function mode is not checked in step S560, it is checked whether the currently set function mode is the brightness function mode (step S580), and if the brightness function mode is checked, the brightness adjustment mode is performed (step S590). Perform S700.

FIG. 15 is a flowchart illustrating an eye treatment step shown in FIG. 11.

Referring to FIG. 15, the first eye treatment mode is checked (step S710), and when the first eye treatment mode is checked, the first eye treatment mode is set to perform an operation corresponding to the first eye treatment mode. After that (step S715), step S700 is performed.

If it is checked in the step S710 that the first eye treatment mode is not checked whether or not the second eye treatment mode (step S720), if the second eye treatment mode is checked, the second eye treatment mode is set by setting the second eye treatment After performing the operation corresponding to the mode (step S725), step S700 is performed.

If it is checked in the second eye treatment mode that is not the second eye treatment mode in step S720 (step S730), and if the third eye treatment mode is checked, if the third eye treatment mode is set to the third eye treatment After the operation corresponding to the mode is performed (step S735), step S700 is performed.

If it is checked in step S730 that it is not the third eye treatment mode, it is checked whether the eye is in the fourth eye treatment mode (step S740). After performing the operation corresponding to the mode (step S745), step S700 is performed.

If it is checked in step S740 that it is not the fourth eye treatment mode, it is checked whether the eye is in the fifth eye treatment mode (step S750), and if the fifth eye treatment mode is checked, the fifth eye treatment mode is set by setting the fifth eye treatment mode. After performing the operation corresponding to the mode (step S755), step S700 is performed.

If it is checked in step S750 that it is not the fifth eye treatment mode, it is checked whether the eye is in the sixth eye treatment mode (step S760), and if it is checked in the sixth eye treatment mode, the sixth eye treatment mode is set by setting the sixth eye treatment mode. After the operation corresponding to the mode is performed (step S765), step S700 is performed.

If it is checked in the step S760 that the mode is not the fifth eye treatment mode, the mode is initialized (step S76) and step S700 is performed.

As described above, the color temperature can be changed by adjusting the currents applied to the LEDs having different phosphors. Accordingly, the lighting device can be implemented in a mode adapted to the use environment.

Although described above with reference to the embodiments, those skilled in the art can be variously modified and changed within the scope of the present invention without departing from the spirit and scope of the invention described in the claims below. I can understand.

1 is a block diagram illustrating a lighting apparatus according to an embodiment of the present invention.

2 is a plan view illustrating an example of the touch pad unit 120 illustrated in FIG. 1.

3A is a representative spectrum illustrating a blueish white LED, and FIG. 3B is a representative CIE colorimeter illustrating a blueish white LED.

4A is a representative spectrum illustrating a yellowish white LED, and FIG. 4B is a representative CIE colorimeter illustrating a yellowish white LED.

5A is a representative spectrum illustrating a green white LED, and FIG. 5B is a representative CIE colorimeter illustrating a green white LED.

FIG. 6A is a representative spectrum illustrating an tanish white LED, and FIG. 6B is a representative CIE colorimeter illustrating an tanish white LED.

FIG. 7 is a timing chart for explaining an example of PWM control of the lighting apparatus shown in FIG. 1.

FIG. 8A is a color change spectrum according to a change in current applied to a yellowish white LED and a blueish white LED, and FIG. 8B is a CIE colorimeter illustrating a change in color temperature.

9A and 9B are color change spectrums and CIE colorimeters corresponding to greenish white LEDs and tanish white LEDs, respectively.

10 is a CIE color system of yellowish white LED, blueish white LED, greenish white LED and tanish white LED.

11 is a flowchart illustrating a method of controlling a lighting device using the LED lighting device.

FIG. 12 is a flowchart for explaining a touch key check step shown in FIG.

FIG. 13 is a flowchart for explaining a function key illuminating step shown in FIG.

14 is a flowchart for explaining the LED lamp control step shown in FIG.

FIG. 15 is a flowchart illustrating an eye treatment step shown in FIG. 11.

<Description of the symbols for the main parts of the drawings>

100: lighting device 110: power supply

120: touch pad unit 130: touch sensor

140: main processing unit 150: LED driver unit

160: LED 170: IR motion sensor

180: Ambient Light Sensor

Claims (15)

A plurality of LED modules having different phosphors; LED driver for controlling the LED module for each channel; And In order to separately control the color temperature of each of the LED module, the lighting device comprises a main processing unit by controlling the current supplied to the LED module by the LED driver in accordance with a control signal supplied from the outside. The lighting apparatus as claimed in claim 1, wherein the main processing unit controls the LED driver. The lighting apparatus of claim 1, wherein the main processing unit receives the control signal through any one of wireless communication using RF, wired network, and wireless communication using Bluetooth. The method of claim 1, wherein the LED module, A blue white white LED module comprising one or more blue white white LEDs; A yellowish white LED module comprising one or more yellowish white LEDs; A green white LED module comprising one or more green white LEDs; And An luminescent white LED module comprising at least one amber white LED. 5. The lighting apparatus according to claim 4, wherein the color coordinate range of the blue white LED is x = 0.23 to 0.33 and y = 0.25 to 0.35. The illuminating device according to claim 4, wherein the color coordinate range of the yellowish white LED is x = 0.4 to 0.5 and y = 0.39 to 0.49. 5. The lighting apparatus according to claim 4, wherein the color coordinate range of the green white LED is x = 0.2 to 0.3 and y = 0.39 to 0.49. The illuminating device according to claim 4, wherein the color coordinate range of the yellowish-brown white LED is x = 0.42-0.52 and y = 0.25-0.35. 5. The lighting apparatus according to claim 4, wherein the current applied to the yellowish white LED is inversely proportional to the current applied to the blueish white LED. The lighting apparatus according to claim 9, wherein the current applied to the yellowish white LED increases and the color temperature increases as the current applied to the blueish white LED decreases. 5. The lighting apparatus according to claim 4, wherein the current applied to the tanish white LED is inversely proportional to the current applied to the greenish white LED. 12. The lighting apparatus according to claim 11, wherein the current applied to the yellowish white LED increases and the color temperature increases as the current applied to the greenish white LED decreases. In the control method of a lighting device having a plurality of LED modules having different phosphors, (a) initializing the main processing unit of the lighting device; (b) when a key signal is input, setting a function mode corresponding to the key signal; (c) displaying a touch key corresponding to the function mode; (d) checking whether the current function is an eye treatment mode when the key signal is not input; And (e) following step (c), or if the current function is checked in the eye treatment mode in step (d), controlling the operation of the LED modules to separately control the color temperature corresponding to the mode. Control method of a lighting device comprising. The method of claim 13, wherein step (b) comprises: (b-1) if the key signal is checked as a power key, checking whether the power key is powered on or powered off; (b-2) in step (b-1), if it is checked to be powered on, setting the LED operation mode to a previous function mode; And (b-3) In the step (b-1), the control method of the lighting apparatus comprising the step of turning off the power, if checked to the power off. The method of claim 13, wherein step (b) comprises: (b-4) setting the LED operation mode to a math mode when the key signal is checked with a math mode key; (b-5) if the key signal is checked with a magazine mode key, setting the LED operation mode to a magazine mode; (b-6) setting the LED operation mode to the novel mode when the key signal is checked with the novel mode key; (b-7) if the key signal is checked as a break mode key, describing the LED operation mode as a break mode; (b-8) if the key signal is checked with an eye treatment mode key, setting the LED operation mode to an eye treatment mode; And (b-9) if the key signal is checked with the brightness mode key, setting the LED operation mode to the brightness mode.

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