JP2013073837A - Illumination device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination device which is suitable for illuminating an object for experiment, etc. in experimental equipment, etc., and excellent in reproducibility of illumination light.SOLUTION: An illumination part 210 is constituted by arranging a plurality of full-color light emitting diodes (full-color LEDs) 220 in which a red light emitting diode (red LED), a green light emitting diode (green LED), and a blue light emitting diode (blue LED) are built like a matrix, respectively, and the red LED, the green LED, and the blue LED of the full-color light emitting diodes full-color LEDs 220 are controlled by a red LED control part 60-1, a green LED control part 60-2, and a blue LED control part 60-3 having constant current circuits for adjustably controlling current to supply, respectively.

Description

  The present invention relates to an illuminating device using an LED (light emitting diode) array, and more particularly to an illuminating device suitable for illuminating an object to be tested with experimental equipment or the like.

  In an experimental facility or the like, light is applied to an object to be tested from an illumination device, and changes in the object to be tested are analyzed by visual observation or analysis of captured images. In this case, as the lighting device, it is preferable from the viewpoint of visual observation or analysis of captured images that it does not include ultraviolet rays or infrared rays that do not require the spectrum of light emitted from the lighting device and has high color purity.

  Further, in order to remove the influence of the shadow of the object to be tested, surface illumination that can obtain uniform light in a certain range is more preferable than a point light source.

  However, since this type of conventional illumination device uses an incandescent lamp or a fluorescent lamp, high light purity cannot be obtained. Therefore, necessary information for observation by visual inspection of the object to be tested can be obtained with high accuracy. In some cases, it cannot be obtained, and in the analysis of the captured image, a favorable result may not be obtained.

  Therefore, the use of light-emitting diodes that can easily obtain high-purity light that does not contain unnecessary ultraviolet and infrared light is considered, and among them, chips of red, green, and blue light-emitting diodes, which are the three primary colors of light, are considered. Attention has been focused on full-color LEDs that are used as one light source.

  However, the full-color LED is basically a point light source, and when this full-color LED is used in an illumination device that illuminates the object to be tested, the influence of a shadow or the like becomes a problem.

  As a conventional technique using a full color LED, a “full color LED dot matrix display device” disclosed in Patent Document 1 in which full color LEDs are arranged in a matrix on a plane is known.

Japanese Patent Laid-Open No. 9-258893

  However, since the “full color LED dot matrix display device” described in Patent Document 1 uses PWM (Pulse Width Modulation) control for the brightness control of each full color LED, flickering occurs, and this kind of experimental equipment, etc. Not suitable for lighting devices.

  Accordingly, an object of the present invention is to provide an illuminating device that is suitable for illuminating an object to be tested with an experimental facility or the like and that is excellent in illumination light reproducibility.

  In order to achieve the above object, a lighting device according to a first aspect of the present invention includes a plurality of full-color light-emitting diodes arranged in a matrix on a plane, each including a red light-emitting diode, a green light-emitting diode, and a blue light-emitting diode; First constant current control means for controlling the current flowing through the red light emitting diode of a plurality of full color light emitting diodes in an adjustable manner, and second controlling the current flowing through the green light emitting diode of the plurality of full color light emitting diodes. Constant current control means, a third constant current control means for controlling the current flowing through the blue light emitting diode of the plurality of full color light emitting diodes in an adjustable manner, the first constant current control means, and the second constant current control means. While maintaining the current ratio controlled by the current control means and the third constant current control means, Luminance control means for controlling the total value of currents flowing through the light emitting diode, the green light emitting diode, and the blue light emitting diode to be adjustable, the first constant current control means, the second constant current control means, and the third And an initial value storage means for storing an initial value of current controlled by the constant current control means and an initial value of the total value controlled by the brightness control means.

  According to a second aspect of the present invention, in the first aspect of the invention, the first constant current control means instructs the increase / decrease of the unit amount of the current flowing through the red light emitting diode of the plurality of full color light emitting diodes to emit the entire light. A red component adjusting means for adjusting a red component of the color, wherein the second constant current control means instructs to increase or decrease the unit amount of the current flowing through the green light emitting diode of the plurality of full color light emitting diodes. Green component adjustment means for adjusting the green component of the emission color, and the third constant current control means instructs to increase or decrease the unit amount of the current flowing through the blue light emitting diode of the plurality of full color light emitting diodes. A blue component adjusting means for adjusting a blue component of the emission color of the plurality of full-color light emitting diodes. Diodes, and having a luminance adjusting means for adjusting the brightness of the entire instructs an increase or decrease in the unit quantity of the sum of the current through the blue LED.

  According to a third aspect of the present invention, in the first or second aspect of the invention, the initial value of the current and the initial value of the total value stored in the initial value storage means are called up at the time of startup or when the reset switch is operated. The first constant current control means, the second constant current control means, the third constant current control means, based on an initial value of the current called by the call means, Each of the red light emitting diode, the green light emitting diode, and the blue light emitting diode of a plurality of full color light emitting diodes is controlled, and the brightness control means is based on the initial value of the sum value called by the calling means, Current flowing through the red light emitting diode, the green light emitting diode, and the blue light emitting diode of the plurality of full color light emitting diodes And controlling the sum.

  According to a fourth aspect of the present invention, in any one of the first to third aspects of the present invention, the apparatus further includes a preset switch, a selection call switch, and a preset value storage unit, and each time the preset switch is operated, 1 constant current control means, the second constant current control means, the current value controlled by the third constant current control means, and the total value controlled by the brightness control means, respectively. When stored in the preset value storage means as a value and the selection call switch is operated, the preset value selected from the preset values stored in the preset value storage means is called and read out. Based on the preset value, the first constant current control means, the second constant current control means, the third constant current control means, Each of the red light emitting diode, the green light emitting diode, and the blue light emitting diode of the plurality of full color light emitting diodes is controlled, and the red light emitting diode of the plurality of full color light emitting diodes and the green light emitting device are controlled by the luminance control means. The sum of currents flowing through the diode and the blue light emitting diode is controlled.

  According to a fifth aspect of the present invention, the preset switch according to the fourth aspect of the present invention is characterized in that the preset switch is set within a predetermined time from the adjustment by any one of the red component adjusting means, the green component adjusting means, the blue component adjusting means, and the luminance adjusting means. Is not operated, the initial value is updated with the adjustment values adjusted by the red component adjusting means, the green component adjusting means, the blue component adjusting means, and the luminance adjusting means.

  According to the present invention, the current flowing through the red light emitting diode, the green light emitting diode, and the blue light emitting diode of the plurality of full color light emitting diodes arranged in a matrix is changed to the first constant current control means, the second constant current control means, The constant current control means 3 controls the brightness control means such that the brightness control means is a ratio of currents controlled by the first constant current control means, the second constant current control means, and the third constant current control means, respectively. The total current value flowing through the red light emitting diode, green light emitting diode, and blue light emitting diode is controlled to be adjustable so that there is no flickering and excellent reproducibility of illumination light. An illumination device suitable for illuminating an object to be tested can be provided.

FIG. 1 is a block diagram showing the overall configuration of a lighting device according to the present invention. FIG. 2 is a diagram showing an example of a front view (FIG. 2A) and a rear view (FIG. 2B) of the lighting device according to the present invention. FIG. 3 is a diagram showing an example of a drive circuit for the full-color LED of the illumination device shown in FIG. FIG. 4 is a flowchart for explaining the operation of the lighting apparatus shown in FIG.

  Embodiments of a lighting device according to the present invention will be described below in detail with reference to the accompanying drawings.

  FIG. 1 is a block diagram showing the overall configuration of a lighting device according to the present invention, and FIG. 2 is a front view (FIG. 2A) and a rear view (FIG. 2B) of the lighting device according to the present invention. It is a figure which shows an example.

  As shown in FIG. 2A, the illumination device 100 of this embodiment has a plurality of full-colors each incorporating a red light emitting diode (red LED), a green light emitting diode (green LED), and a blue light emitting diode (blue LED). The illumination unit 210 is configured by arranging light emitting diodes (full color LEDs) 220 in a matrix.

  In FIG. 1, the illumination device 100 of this embodiment includes a red component adjustment switch 10-1, a green component adjustment switch 10-2, a blue component adjustment switch 10-3, a luminance adjustment switch 20, a preset switch 30, a selection switch 40, The reset switch 50, red LED control unit 60-1, green LED control unit 60-2, blue LED control unit 60-3, luminance control unit 70, initial value storage unit 80, and preset value storage unit 90 are connected to the control unit 200. The full-color LED matrix circuit 300 configured by the red LED control unit 60-1, the green LED control unit 60-2, the blue LED control unit 60-3, and the luminance control unit 70 is illustrated in FIG. The unit 210 is configured.

  The red component adjustment switch 10-1 corresponds to the RED (+) button and the RED (-) button shown in FIG. 2, and every time the RED (+) button or the RED (-) button is pressed, the full color is set in a predetermined unit. The red component of the illumination light emitted from the illumination unit 210 is adjusted by increasing / decreasing the current flowing through the red LED constituting each full-color LED 220 of the LED matrix circuit 300.

  The green component adjustment switch 10-2 corresponds to the GREEN (+) button and the GREEN (-) button shown in FIG. 2, and every time the GREEN (+) button or the GREEN (-) button is pressed, a full color is set in a predetermined unit. The green component of the illumination light emitted from the illumination unit 210 is adjusted by increasing / decreasing the current flowing through the green LEDs constituting each full-color LED 220 of the LED matrix circuit 300.

  The blue component adjustment switch 10-3 corresponds to the BLUE (+) button and the BLUE (-) button shown in FIG. 2, and each time the BLUE (+) button or the BLUE (-) button is pressed, the full color is set in a predetermined unit. The blue component of the illumination light emitted from the illumination unit 210 is adjusted by increasing / decreasing the current flowing through the blue LED that constitutes each full-color LED 220 of the LED matrix circuit 300.

  The brightness adjustment switch 20 corresponds to the BRIGHTNESS (+) button and the BRIGHTNESS (−) button shown in FIG. 2. The luminance ratio of the illumination light emitted from the illumination unit 210 is adjusted by maintaining the ratio of the current flowing through the red LED, the green LED, and the blue LED constituting the full color LED 220 and increasing / decreasing the total current amount. .

  Now, in the illumination device 100 of this embodiment, in order to reproduce the illumination light emitted from the illumination unit 210, the current value and the red LED, respectively, that were flowing in the red LED, the green LED, and the blue LED at that time, The preset value storage unit 90 has a preset function for storing the total value of the current values flowing through the green LED and the blue LED as a set of preset values. In this embodiment, up to five sets of preset values that can be stored in the preset value storage unit 90 are stored. However, five or less sets may be stored.

  The preset switch 30 corresponds to the PRESET button shown in FIG. 2, and each time the PRESET button is pressed, the current value and the red LED, green LED, A set of total values of current values respectively flowing through the blue LEDs is stored in the preset value storage unit 90. In this embodiment, there are up to five preset value groups that can be stored in the preset value storage unit 90. Therefore, the number of preset value groups that can be stored in the preset value storage unit 90 reaches five, and then PRESET. When the button is pressed, the oldest preset value is the sum of the current value that was flowing in each of the red LED, green LED, and blue LED and the current value that was flowing in each of the red LED, green LED, and blue LED. Overwritten with preset values consisting of

  The selection switch 40 corresponds to the SET-SEL button shown in FIG. 2, and this SET-SEL button is pressed when reading a preset value stored in the preset value storage unit 90. When this SET-SEL button is pressed once, the latest preset value is read from the preset value storage unit 90, and the red LED, green LED, blue color constituting each full color LED 220 of the full color LED matrix circuit 300 by this preset value. The total value of the currents that flow through the LEDs and the currents that flow through the red, green, and blue LEDs is controlled.

  When the SET-SEL button is pressed twice, a new preset value is read from the preset value storage unit 90, and the red LED, green LED, and blue LED constituting each full color LED 220 of the full color LED matrix circuit 300 based on the preset value. And the total value of the currents flowing through the red LED, the green LED, and the blue LED are controlled. Similarly, each time the SET-SEL button is pressed, the red LED and the green that constitute each full-color LED 220 of the full-color LED matrix circuit 300 are controlled. It is possible to switch the total value of the current flowing through the LED and the blue LED and the current flowing through the red LED, the green LED, and the blue LED.

  The reset switch 50 corresponds to the RESET button shown in FIG. This RESET button is used to return the currents flowing through the red LED, green LED, and blue LED constituting each full color LED 220 of the full color LED matrix circuit 300 and the sum of the currents flowing through the red LED, green LED, and blue LED to the initial values. To be operated. The initial value storage unit 80 includes initial values of currents flowing through the red LEDs, green LEDs, and blue LEDs constituting the full color LEDs 220 of the full color LED matrix circuit 300, and a total value of currents flowing through the red LEDs, green LEDs, and blue LEDs. When the RESET button is pressed, the initial values of currents that flow through the red LED, green LED, and blue LED that constitute each full-color LED 220 and the sum of currents that flow through the red LED, green LED, and blue LED are stored. The initial value of the value is read from the initial value storage unit 80, and the current flowing through the red LED, green LED, and blue LED constituting each full color LED 220 of the full color LED matrix circuit 300 and the red LED, green LED, The total value of the current flowing through the blue LED is controlled .

  The red LED control unit 60-1 controls the current flowing through the red LED that constitutes each full color LED 220 of the full color LED matrix circuit 300. In the red LED control unit 60-1, PWM control is not used for current control, and a constant current circuit that controls the current flowing through the red light emitting diode so as to be adjustable is used. For this reason, the flickering of the illumination light emitted from the illumination unit 210 due to the switching of the pulses does not occur. In addition, since unnecessary ultraviolet rays and infrared rays are not included because of the pure color of the light of the LED, a favorable result can be obtained, for example, when analyzing a captured image of an object to be tested with experimental equipment or the like.

  The same applies to the green LED control unit 60-2 and the blue LED control unit 60-3, and the green LED control unit 60-2 controls the current flowing through the green LEDs constituting the full color LEDs 220 of the full color LED matrix circuit 300, and The LED control unit 60-3 controls the current flowing through the blue LEDs constituting each full-color LED 220 of the full-color LED matrix circuit 300.

  The luminance control unit 70 controls the sum of the currents flowing through the red LED, the green LED, and the blue LED constituting each full color LED 220 of the full color LED matrix circuit 300 while maintaining the ratio.

  Current control by the red LED control unit 60-1, the green LED control unit 60-2, the blue LED control unit 60-3, and the luminance control unit 70 is performed by the red component adjustment switch 10-1, the green component adjustment switch 10-2, and the blue color. This is performed based on the operation of the component adjustment switch 10-3 and the luminance adjustment switch 20, the initial value stored in the initial value storage unit 80, and the preset value read from the preset value storage unit 90 by the operation of the selection switch 40.

  The current control values by the red LED control unit 60-1, the green LED control unit 60-2, the blue LED control unit 60-3, and the luminance control unit 70 are displayed on the display unit 230 shown in FIG. . Thereby, the state of the illumination light emitted from the illumination unit 210 can be grasped by a numerical value.

  The control unit 200 includes a red component adjustment switch 10-1, a green component adjustment switch 10-2, a blue component adjustment switch 10-3, a luminance adjustment switch 20, a preset switch 30, a selection switch 40, a reset switch 50, and a red LED control unit. 60-1, green LED control unit 60-2, blue LED control unit 60-3, luminance control unit 70, initial value storage unit 80, and preset value storage unit 90.

  FIG. 3 is a diagram showing an example of a drive circuit for the full-color LED of the illumination device shown in FIG.

  As shown in FIG. 3, each full-color LED 220 of the full-color LED matrix circuit 300 incorporates a red LED, a green LED, and a blue LED, and the current flowing through the red LED of each full-color LED 220 of the full-color LED matrix circuit 300 is shown in FIG. The current flowing through the green LED of each full-color LED 220 of the full-color LED matrix circuit 300 is controlled by the red LED constant current control circuit 340-1 that receives power from the power supply unit 330 provided in the red LED control unit 60-1. The blue LED of each full color LED 220 of the full color LED matrix circuit 300 is controlled by the green LED constant current control circuit 340-1 that receives power from the power supply unit 330 provided in the green LED control unit 60-2 of FIG. The flowing current is blue L in FIG. Are controlled by the blue LED constant current control circuit 340-3 which receives the power supply from the power supply portion 330 provided in the D control unit 60-3.

  FIG. 4 is a flowchart for explaining the operation of the lighting apparatus shown in FIG.

  When this process is started, the control unit 200 first checks whether the power is on (step 401). If the power is not turned on (NO in step 401), the process returns to step 401 and waits for the power to be turned on.

  If it is determined in step 401 that the power supply is ON, the control unit 200 determines the initial value of the current passed from the initial value storage unit 80 to the red LED, the green LED, and the blue LED constituting each full color LED 220 of the full color LED matrix circuit 300 and The initial value of the sum of the currents flowing through the red LED, the green LED, and the blue LED is read out, and based on the read out initial value, RGB illuminance is displayed on the display unit 230 in FIG. 2B (step 403). Then, the initial values of the currents that flow through the red LEDs, the green LEDs, and the blue LEDs constituting the full color LEDs 220 of the full color LED matrix circuit 300 read from the initial value storage unit 80 and the currents that flow through the red LEDs, the green LEDs, and the blue LEDs. Each full color LED 220 of the full color LED matrix circuit 300 is controlled by controlling the red LED control unit 60-1, the green LED control unit 60-2, the blue LED control unit 60-3, and the luminance control unit 70 based on the initial value of the total value of LED brightness toning control is performed to turn on and control the brightness and toning (step 404).

  Next, it is checked whether or not the brightness adjustment operation, that is, the brightness adjustment switch 20 has been operated (step 405). If it is determined that the brightness adjustment switch 20 has been operated (YES in step 405), the brightness control unit 70 is controlled in accordance with the operation of the brightness adjustment switch 20, and the brightness of the illumination light emitted from the illumination unit 210 is determined. To control.

  If it is determined in step 405 that the brightness adjustment operation has not been performed (NO in step 405), the toning operation, that is, the red component adjustment switch 10-1, the green component adjustment switch 10-2, and the blue component adjustment switch. It is checked whether any one of 10-3 has been operated (step 407). If it is determined that any one of the red component adjustment switch 10-1, the green component adjustment switch 10-2, and the blue component adjustment switch 10-3 is operated (YES in step 407), the red component adjustment switch 10- 1. Control the red LED control unit 60-1, the green LED control unit 60-2, and the blue LED control unit 60-3 according to the operation of the green component adjustment switch 10-2 and the blue component adjustment switch 10-3, Toning control of illumination light emitted from the illumination unit 210 is performed (step 408).

  Next, it is checked whether the preset switch 30 has been operated (step 409). Here, if it is determined that the preset switch 30 has been operated (YES in step 409), the current values flowing in the red LED, the green LED, and the blue LED at that time and the red LED, the green LED, and the blue LED, respectively. A preset value writing process is performed in which the set of the sum of current values that have been applied is stored in the preset value storage unit 90 as a preset value (step 410).

  If it is determined in step 409 that the preset switch 30 has not been operated (NO in step 409), it is checked whether or not a predetermined time has elapsed from this determination (step 411), and it is determined that the predetermined time has elapsed. The initial value storage unit 80 writes the set of the current value flowing through the red LED, the green LED, and the blue LED and the total value of the current value flowing through the red LED, the green LED, and the blue LED at this time. A value update process is performed (step 412).

  If it is determined in step 407 that the toning operation has not been performed (NO in step 407), and if it is determined in step 411 that the predetermined time has not elapsed (NO in step 411), step 405 is performed. Return to.

  Next, it is checked whether the selection switch 40 has been operated (step 413). If it is determined that the selection switch 40 has been operated (YES in step 413), the preset value selected by the operation of the selection switch 40 is read from the preset value storage unit 90, and the process proceeds to step 403. In this case, in step 403, RGB illuminance display is performed on the display unit 230 of FIG. 2B based on the preset value read from the preset value storage unit 90, and in step 404, the reading is performed from the preset value storage unit 90. The brightness of the illumination light emitted from the illumination unit 210 is controlled by controlling the red LED control unit 60-1, the green LED control unit 60-2, the blue LED control unit 60-3, and the brightness control unit 70 based on the preset values. And toning is controlled.

  If it is determined in step 413 that the selection switch 40 has not been operated (NO in step 413), it is then checked whether the reset switch 50 has been operated (step 415). If it is determined that the reset switch 50 has been operated (YES in step 415). Return to step 403. In this case, in step 403, the initial values of the currents to be supplied to the red LED, the green LED, and the blue LED constituting each full color LED 220 of the full color LED matrix circuit 300 from the initial value storage unit 80 and the red LED, green LED, and blue LED are changed. The initial value of the sum of the currents to be passed is read out, and based on the read out initial value, RGB illuminance display is performed on the display unit 230 in FIG. 2B (step 403). Then, the red LED control unit 60-1, the green LED control unit 60-2, the blue LED control unit 60-3, and the luminance control unit 70 are controlled based on the initial values, and the luminance of the illumination light emitted from the illumination unit 210 is controlled. And toning is controlled.

  If it is determined in step 415 that the reset switch 50 has not been operated (NO in step 415), then it is checked whether the power is off (step 416). If it is determined that the power is off (step 416). If YES in 416, each full-color LED 220 of the full-color LED matrix circuit 300 is turned off and the process is terminated. If it is determined in step 416 that the power is not OFF (NO in step 416), the process returns to step 405.

  Although the above is an example of typical embodiment of this invention, this invention is not limited to the Example shown in the said Example and drawing, It can implement suitably deform | transforming within the range which does not change the summary. It is.

10-1 Red component adjustment switch 10-2 Green component adjustment switch 10-3 Blue component adjustment switch 20 Brightness adjustment switch 30 Preset switch 40 Selection switch 50 Reset switch 60-1 Red LED control unit 60-2 Green LED control unit 60- 3 Blue LED Control Unit 70 Luminance Control Unit 80 Initial Value Storage Unit 90 Preset Value Storage Unit 100 Lighting Device 200 Control Unit 210 Lighting Unit 220 Full Color Light Emitting Diode (Full Color LED)
230 Display Unit 300 Full Color LED Matrix Circuit 330 Power Supply Unit 340-1 Red LED Constant Current Control Circuit 340-2 Green LED Constant Current Control Circuit 340-3 Blue LED Constant Current Control Circuit

Claims (5)

A plurality of full-color light emitting diodes arranged in a matrix on a plane, each including a red light emitting diode, a green light emitting diode, and a blue light emitting diode;
First constant current control means for controlling the current flowing through the red light emitting diode of the plurality of full color light emitting diodes in an adjustable manner;
Second constant current control means for controlling the current flowing through the green light emitting diode of the plurality of full color light emitting diodes in an adjustable manner;
Third constant current control means for controlling the current flowing through the blue light emitting diode of the plurality of full color light emitting diodes in an adjustable manner;
While maintaining the ratio of current controlled by the first constant current control means, the second constant current control means, and the third constant current control means, the red light emitting diode, the green light emitting diode, Brightness control means for controlling the total value of the current flowing through the blue light emitting diode in an adjustable manner;
The initial value of the current controlled by the first constant current control means, the second constant current control means, the third constant current control means and the initial value of the total value controlled by the brightness control means are stored. And an initial value storage means. The first constant current control means includes
A red component adjusting unit that adjusts a red component of an entire emission color by instructing an increase / decrease in a unit amount of a current flowing through the red light emitting diode of the plurality of full color light emitting diodes;
The second constant current control means includes
Green component adjusting means for instructing to increase or decrease the unit amount of the current flowing through the green light emitting diode of the plurality of full color light emitting diodes and adjusting the green component of the entire emission color;
The third constant current control means includes
Blue component adjusting means for adjusting the blue component of the entire emission color by instructing to increase or decrease the unit amount of the current flowing through the blue light emitting diode of the plurality of full color light emitting diodes,
The brightness control means includes
And a luminance adjusting unit that adjusts the overall luminance by instructing to increase / decrease the unit amount of the total current flowing through the red light emitting diode, the green light emitting diode, and the blue light emitting diode of the plurality of full color light emitting diodes. The lighting device according to claim 1. Calling means for calling the initial value of the current and the initial value of the total value stored in the initial value storage means when starting or when the reset switch is operated,
The first constant current control means, the second constant current control means, and the third constant current control means are configured to control the plurality of full-color light emitting diodes based on the initial value of the current called by the calling means. The currents flowing through the red light emitting diode, the green light emitting diode, and the blue light emitting diode are respectively controlled, and the luminance control unit is configured to determine the plurality of full color light emitting diodes based on an initial value of the sum value called by the calling unit. The lighting device according to claim 1, wherein a total sum of currents flowing through the red light emitting diode, the green light emitting diode, and the blue light emitting diode is controlled. A preset switch,
A selective call switch;
Preset value storage means, and
Each time the preset switch is operated, the current value and the brightness control controlled by the first constant current control means, the second constant current control means, and the third constant current control means, respectively. The total value controlled by the means is stored as a preset value in the preset value storage means,
When the selection call switch is operated, the preset value selected from the preset values stored in the preset value storage means is called, and the first predetermined value is read based on the read preset value. The currents flowing through the red light emitting diode, the green light emitting diode, and the blue light emitting diode of the plurality of full color light emitting diodes are controlled by the current control means, the second constant current control means, and the third constant current control means, respectively. 4. The sum of currents flowing through the red light emitting diode, the green light emitting diode, and the blue light emitting diode of the plurality of full color light emitting diodes is controlled by the luminance control means. The lighting device described in 1.   When the preset switch is not operated for a predetermined time after adjustment by any of the red component adjustment unit, the green component adjustment unit, the blue component adjustment unit, and the luminance adjustment unit, the red component adjustment unit, the green component adjustment unit The lighting device according to claim 4, wherein the initial value is updated with an adjustment value adjusted by a component adjustment unit, the blue component adjustment unit, and the luminance adjustment unit.

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