Light-emitting control device, light-emitting device, and lighting device

Abstract

To provide a light emission control device, a light-emitting device, and an illuminating device, in which an output ratio among a plurality of light-emitting elements with different light colors does not deviate from a predetermined output ratio even if a delay occurs in rise of a PWM output.SOLUTION: A light emission control device 10 includes: an input section 11 to which a dimming signal is input, the signal indicating a dimming rate of each of a plurality of light emitting elements with light colors different from each other; and a control section 12 which outputs a plurality of control signals for controlling the plurality of light-emitting elements based on the input dimming signal. Each of the plurality of control signals has a control value determined by using a correction value predetermined according to the light color of a light-emitting element to which the control signal is output thereby to correct the dimming rate indicated by the input dimming signal. The control section 12 adjusts, when the dimming rate is less than a predetermined value, a difference between a correction value for a first light color and a correction value for a second light color so that the difference is less than that when the dimming rate is equal to or more than the predetermined value.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a light-emitting control device, a light-emitting device, and a lighting device. [Background technology]

[0002] Conventionally, in a light-emitting control device that controls multiple light-emitting elements with different light colors, the output current of the light-emitting element is corrected by limiting the upper limit values ​​of the on-width and off-width of a PWM (Pulse Width Modulation) signal that controls the light-emitting element. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-159094 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, when a delay occurs in the rising edge of the PWM output of a light-emitting element, the output ratio between a plurality of light-emitting elements emitting light of different colors may deviate from a predetermined output ratio.

[0005] The present invention provides a light-emitting control device, a light-emitting device, and an illumination device in which the output ratio between a plurality of light-emitting elements of different light colors does not deviate from a predetermined output ratio even if a delay occurs in the rising edge of the PWM output. [Means for solving the problem]

[0006] A light-emitting control device according to one embodiment of the present invention includes an input unit to which a dimming signal indicating the dimming rate of a plurality of light-emitting elements having different light colors is input, and a control unit that outputs a plurality of control signals for controlling the plurality of light-emitting elements based on the input dimming signal, each of the plurality of control signals having a control value determined by calculation and correction based on the dimming rate indicated by the input dimming signal and a correction value that is predetermined according to the light color of the light-emitting element to which the control signal is output, and the control unit adjusts the difference between the correction value for a first light color and the correction value for a second light color when the dimming rate is smaller than a predetermined value than when the dimming rate is equal to or greater than the predetermined value.

[0007] A light emitting device according to an aspect of the present invention includes the light emitting control device according to the aspect of the present invention and the plurality of light emitting elements.

[0008] An illumination device according to an aspect of the present invention includes a light emitting device according to an aspect of the present invention and a housing that covers the light emitting device. Effect of the Invention

[0009] According to the present invention, a light-emitting control device, a light-emitting device, and a lighting device are realized in which the output ratio between multiple light-emitting elements with different light colors does not deviate from a predetermined output ratio even if a delay occurs in the rising edge of the PWM output. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a block diagram of a light emission control device and the like according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing an overview of the light emission control device according to the embodiment. [Diagram 3] FIG. 3 is a diagram illustrating a phenomenon in which a delay occurs in the rising edge of a PWM output in the light emission control device according to the embodiment. [Figure 4] FIG. 4 is a diagram illustrating correction of a PWM output in the light emission control device according to the embodiment. [Diagram 5]FIG. 5 is a diagram showing the optical output with and without correction to the PWM output. [Figure 6] FIG. 6 is a diagram showing an example of an output deviating from a default output ratio in the light emission control device according to the embodiment. [Figure 7] FIG. 7 is a diagram showing a default output ratio, and output ratios in the light-emitting control device according to the embodiment and in a conventional example. [Figure 8] FIG. 8 is a diagram showing adjustment of the correction value in the light emission control device according to the embodiment. [Figure 9] FIG. 9 is a flowchart showing the operation of the light emission control device in the embodiment. [Figure 10] FIG. 10 is a diagram showing the light output when the correction value of the light emission control device in the embodiment is adjusted and the light output when the correction value is not adjusted. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, the embodiment will be described in detail with reference to the drawings.

[0012] The embodiments described below are all comprehensive or specific examples. The numerical values, shapes, materials, components, the arrangement and connection of the components, steps, and the order of steps shown in the following embodiments are merely examples and are not intended to limit the scope of the claims. Furthermore, among the components according to the following embodiments, those components that are not described in the independent claims showing the highest concept are described as optional components. Furthermore, each figure is not necessarily a strict illustration. In each figure, substantially the same configuration is given the same reference numeral, and duplicated explanations are omitted or simplified.

[0013] In addition, each drawing is a schematic diagram and is not necessarily a precise illustration. In addition, in each drawing, the same reference numerals are used for substantially the same configuration, and duplicated explanations may be omitted or simplified.

[0014] (Embodiment) [Outline of the light emission control device] First, an overview of the light emission control device will be described with reference to Fig. 1. Fig. 1 is a block diagram of a light emission control device 10 and the like according to an embodiment.

[0015] The light emission control device 10 includes an input unit 11, a control unit 12, and a storage unit 13. The light emission control device 10 is realized by, for example, a control circuit in which a microcomputer and peripheral circuits are combined.

[0016] The input unit 11 receives a dimming signal indicating a dimming ratio of each of the lights emitted from the first light emitting element 21 to the fourth light emitting element 24, which are a plurality of light emitting elements having different light colors. The input unit may be realized by, for example, a photocoupler insulating input circuit that realizes a DC input.

[0017] The control unit 12 adjusts the correction value so that when the dimming rate is smaller than a predetermined value, the difference between the correction value for the first light color and the correction value for the second light color is smaller than when the dimming rate is equal to or larger than the predetermined value.

[0018] The correction values ​​are stored in advance in the storage unit 13. The storage unit 13 is realized by a memory. The storage unit 13 may store the correction value during the manufacturing stage of the light emission control device 10.

[0019] The light-emitting device 20 includes a light-emitting control device 10, a first light-emitting element 21, a second light-emitting element 22, a third light-emitting element 23, and a fourth light-emitting element 24. The number of light-emitting elements is not limited to four, and may be any number as long as it is a plurality. For example, the number of light-emitting elements may be two, the first light-emitting element 21 and the second light-emitting element 22, or may be five or more.

[0020] The first light emitting element 21, the second light emitting element 22, the third light emitting element 23 and the fourth light emitting element 24 are light emitting elements that emit light of different colors from one another. The light emitting elements are realized by, for example, light emitting diodes.

[0021] For example, the first light emitting element 21 may be a red light emitting diode, the second light emitting element 22 may be a green light emitting diode, the third light emitting element 23 may be a blue light emitting diode, and the fourth light emitting element may be a yellow light emitting diode.

[0022] Alternatively, the first light emitting element 21 to the fourth light emitting element 24 may be white light emitting elements having different color temperatures. Furthermore, the light emitting device 20 may include only the first light emitting element 21 and the second light emitting element 22. The light emitting device 20 may include any number of light emitting elements as long as the number is more than one.

[0023] The lighting device 30 includes a light emitting device 20 and a housing 31 .

[0024] The lighting device 30 may be, for example, a spotlight or an outdoor color light, etc. The lighting device 30 may be any type of lighting device.

[0025] 2 is a diagram showing an overview of the light emission control device 10 in the embodiment. The light emission control device 10 can adjust the color of the light output or adjust the light intensity by adjusting the PWM output for each of the RGBY light emitting elements. For example, the light emission control device 10 includes a microcomputer and a peripheral circuit, and transmits a control signal from the microcomputer to the light emitting elements via the peripheral circuit, causing each light emitting element to emit light by the PWM output. The light output refers to the ratio of the light intensity when the light intensity at a dimming rate of 100% is taken as 100%.

[0026] [Previous issues] The light emission control device 10 of the present invention determines the duty ratio of the PWM output based on the DMX input signal and the correction value previously stored in the storage unit 13, and outputs it to the multiple light emitting elements. The multiple light emitting elements emit light when power is supplied via the light emitting device 20, and the light emission control device 10 changes the dimming rate for the multiple light emitting elements, thereby changing the power supplied to the multiple light emitting elements.

[0027] 3 is a diagram illustrating a phenomenon in which a delay occurs in the rising edge of a PWM output in the light emission control device 10 according to the embodiment. When the light emission control device 10 performs PWM output to each light emitting element, a phenomenon in which a delay occurs before the output current reaches a desired value at the rising edge of the PWM waveform may occur. For example, among the R output current, G output current, B output current, and Y output current shown in FIG. 3, at the rising edge of the PWM waveform indicated by an oval mark, a region may occur in which the output current shown as region A does not reach a predetermined value. In region A, the output current starts from a value smaller than the predetermined output current, and reaches the predetermined output current after a certain time has passed.

[0028] If there is a region such as region A where the output current does not reach the specified value when the PWM waveform rises, the actual output current will suddenly decrease when the duty ratio is low, causing the balance with the light output by other light-emitting elements to be lost, resulting in the problem that the specified light color will not be achieved.

[0029] FIG. 4 is a diagram illustrating correction of PWM output in the light emission control device 10 according to the embodiment.

[0030] As shown in FIG. 4(a), in the case of no correction (correction value 255), the DMX input is 0 and the output is 100% when the DMX input is 255. Also, as shown in FIG. 4(b), in the case of a correction rate of about 50% (correction value 128), the DMX input is 0 and the output is 50% when the DMX input is 255. The correction rate is the ratio of the OFF width of the PWM output after limiting the output in the state of the dimming signal where the dimming rate is 100% to the PWM output period. Furthermore, the correction value is a numerical value of the correction rate between 0 and 255, so that the correction rate is 0% and the correction value is 255, and the correction rate is 100%, respectively. The calculation formula of the duty ratio used here is as follows: Duty ratio = (control value) / (maximum control value) (1) Here, the control value is a value used to calculate the duty ratio, and is a value calculated based on the dimming rate and correction value of the dimming signal, and the maximum control value is the maximum value that the control value can take. Note that the control value is a duty ratio (0% to 100%) expressed as a numerical value (0 to 33333), and is therefore proportional to the LED current value. In addition, since the current value and the light output are basically proportional to each other in a light-emitting diode, in this embodiment, the control value and the light output are also proportional to each other.

[0031] According to the above calculation, the difference in light output when the correction rate is different between with and without correction is as shown in FIG. 5. A preset light color is realized by performing such correction on each of the multiple light-emitting elements, but the light-emitting control device 10 of the present invention may have a much larger correction rate than conventional products. For example, when the correction rate is 50% or more, if the correction rate is very large, the light-emitting control device 10 is used in a region with a small duty ratio, and the light-emitting control device 10 is more significantly affected by region A. This causes the balance with the light output by the other light-emitting elements to be lost, and the above-mentioned problem of the preset light color not being realized becomes more pronounced.

[0032] FIG. 6 is a diagram showing an example of an output deviating from a default output ratio in a light emission control device in an embodiment. Consider a case where the correction rate of only the B output is very large. When the dimming rate of each color is similarly lowered, ideally the default output ratio is maintained while changing, but since the duty ratio of the B output is small, the influence of area A is large in the output, and the actual output value is smaller than the default output value. Specifically, in the B output, there is a possibility that the range of the pulse width of the PWM output is all within area A as shown in FIG. 6. Therefore, in the output, the output ratio with the R output, G output, and Y output, which are relatively less affected by area A, deviates from the default output ratio.

[0033] FIG. 7 is a diagram showing an example of a comparison between a default output ratio, an output ratio of the light emission control device in the embodiment, and an output ratio of a conventional example. As shown in FIG. 7(a), for example, the output ratio between the output 1 of the first light emitting element 21 and the output 2 of the second light emitting element 22 is set to 4:1. When the output 2 of the second light emitting element 22 is significantly affected by the region A due to a low duty ratio of the second light emitting element 22, the output 2 becomes a value lower than the default, and the output ratio between the output 1 of the first light emitting element 21 and the output 2 of the second light emitting element 22 actually becomes 8:1 at a certain low dimming rate, as shown in FIG. 7(b). Thus, in the conventional technology, when a desired color is realized using a plurality of light emitting elements having different light colors, if the brightness of the desired color (i.e., the dimming rate of the light emitting element) is changed, the desired color deviates when the dimming rate is low. Therefore, by correcting the correction value of the output ratio between the output 1 of the first light-emitting element 21 and the output 2 of the second light-emitting element 22, which is 8:1, by the operation of the light-emitting control device 10 of the present invention, under these conditions, the output ratio between the output 1 of the first light-emitting element 21 and the output 2 of the second light-emitting element 22 is improved to 4.5:1, as shown in (c) of Figure 7.

[0034] [Operation of the light emission control device] Next, a description will be given of the operation of the light emission control device 10. Fig. 8 is a diagram showing adjustment of the correction value in the light emission control device 10 in the embodiment.

[0035] If the DMX input is equal to or greater than a predetermined value (e.g., 50 to 255), the light emission control device 10 determines the duty ratio using a default correction value as is. If the DMX input is equal to or greater than a predetermined value (e.g., 50 to 255), the light emission control device 10 may determine the duty ratio using an arbitrary correction value.

[0036] When the DMX input is equal to or less than a predetermined value (eg, less than 50), the light emission control device 10 performs the following operation.

[0037] First, the control unit 12 of the light-emitting control device 10 searches for and determines the minimum value (hereinafter referred to as the minimum correction value) from among the correction values ​​for the first light-emitting element 21 to the fourth light-emitting element 24. For example, in the example shown in Fig. 8, the control unit 12 searches for an R correction value of 148, a G correction value of 177, a B correction value of 89, and a Y correction value of 143, and determines that the minimum correction value is the B correction value 89.

[0038] Next, the control unit 12 adjusts the other correction values ​​so that the difference between the minimum correction value and the other correction values ​​gradually decreases as the DMX input decreases. Here, the control unit 12 smoothly decreases the numerical values ​​of the other correction values ​​according to the decreasing tendency of the value of the DMX input. Specifically, the control unit 12 adjusts the correction values ​​using the following formula, and sets the adjusted values ​​as the correction final values. Correction final value = correction value - (correction value - minimum correction value) x (200 - output dimming value / 200) (2) Here, the correction final value is the correction value after adjustment by the control unit 12, and the correction value in formula (2) is the correction value previously stored in the storage unit 13. The output dimming value is a value obtained by converting the DMX input into 1023 steps, and when the DMX input is 0, the output dimming value is 0, and when the DMX input is 255, the output dimming value is 1023. Also, the value 200 in formula (2) is a value determined based on the output dimming value 200 (DMX input 50).

[0039] The control unit 12 adjusts each correction value so that all the correction values ​​for the first light emitting element 21 to the fourth light emitting element 24 are equal to the minimum correction value when the DMX input value is 0. Here, the correction values ​​for the first light emitting element 21 to the fourth light emitting element 24 are adjusted so that all the correction values ​​are equal to the minimum correction value when the DMX input value is 0, but each correction value may be adjusted so that it is equal to any other numerical value instead of the minimum correction value.

[0040] The following is a summary of the operation of the light emission control device 10. Fig. 9 is a flowchart showing the operation of the light emission control device in this embodiment.

[0041] First, the input unit 11 of the light emission control device 10 receives an input of a dimming signal (step S10). The dimming signal is a DMX input signal input from outside the light emission control device 10. The dimming signal may be represented by a value between 0 and 255, or may be represented by a value between 0 and 1023 obtained by converting the DMX input into 1023 steps.

[0042] The control unit 12 determines whether the value of the dimming signal is smaller than a predetermined value (step S11). Specifically, the control unit 12 may determine whether the value of the dimming signal is smaller than 50. Alternatively, the control unit 12 may determine whether the output dimming value obtained by converting the DMX input into 1023 steps is smaller than 200.

[0043] When the control unit 12 determines that the value of the dimming signal is smaller than a predetermined value (e.g., 50) (Yes in step S11), the control unit 12 adjusts the correction value so that the difference between the correction value for the first light color and the correction value for the second light color becomes smaller (step S12). Here, the first light color and the second light color refer to the light colors exhibited by the multiple light-emitting elements, respectively.

[0044] If the control unit 12 determines that the value of the dimming signal is not smaller than a predetermined value (e.g., 50) (No in step S11), the control unit 12 determines the control value using a predetermined correction value (step S13). If the control unit 12 determines that the value of the dimming signal is not smaller than 50, the control unit 12 determines the control value using a correction value previously stored in the storage unit 13. The control value may be calculated using the following formula: Control value = output value before correction × final correction value / 255 (3) Here, the pre-correction output value is the output value determined by the dimming signal. By calculating formula (3), it is possible to output a control value that reflects the dimming signal instruction and correction.

[0045] FIG. 10 is a diagram showing the light output when the correction value of the light-emission control device 10 in the embodiment is adjusted and when the correction value is not adjusted.

[0046] 10 shows an example of the output value of the third light-emitting element 23. Here, the second light-emitting element 22 has a correction minimum value, and the third light-emitting element 23 has a correction value that is not the correction minimum value. The light output of the third light-emitting element 23 by the light-emitting control device 10 of the present invention is lower than the light output of the light-emitting element by the conventional light-emitting control device in the range of less than DMX input 50 (or less than 200 when the DMX input signal is converted into 1023 steps). Similarly, the output value of the first light-emitting element 21 and the fourth light-emitting element 24, which do not have a correction minimum value, is lower in the range of less than DMX input 50 (or less than 200 when the DMX input signal is converted into 1023 steps).

[0047] Note that, for the second light-emitting element 22 having the minimum correction value, no adjustment of the correction value is performed, so the light output of the second light-emitting element by the light-emitting control device 10 of the present invention does not change from the light output of the light-emitting element by the conventional light-emitting control device. As a result, the light outputs of the first light-emitting element 21, the third light-emitting element 23 and the fourth light-emitting element 24 are also reduced in accordance with the second light-emitting element 22 that outputs light with an output value smaller than the default light output by the operation of the light-emitting control device 10 of the present invention, so that the balance of the colors of the light-emitting elements is kept close to the default balance.

[0048] [Effects, etc.] The light-emitting control device 10 of the present disclosure comprises an input unit 11 to which a dimming signal indicating the dimming rate of a plurality of light-emitting elements having different light colors is input, and a control unit 12 that outputs a plurality of control signals for controlling the plurality of light-emitting elements based on the input dimming signal, each of the plurality of control signals having a control value determined by calculation and correction based on the dimming rate indicated by the input dimming signal and a correction value predetermined according to the light color of the light-emitting element to which the control signal is output, and the control unit 12 adjusts the difference between the correction value for the first light color and the correction value for the second light color so that when the dimming rate is smaller than a predetermined value, it is smaller than when the dimming rate is equal to or greater than the predetermined value.

[0049] As a result, the light-emitting control device 10 of the present disclosure can correct deviations of the light color realized by the multiple light-emitting elements from the specified value by adjusting the balance of the output values ​​of the multiple light-emitting elements when the dimming signal is smaller than a predetermined value. Thus, the light-emitting control device 10 of the present disclosure can realize an expected light color.

[0050] In the light-emitting control device 10 of the present disclosure, when the dimming ratio is equal to or greater than the specified value, the correction value for the first light color is constant regardless of the input dimming ratio, and the correction value for the second light color is constant regardless of the input dimming ratio.

[0051] As a result, the light-emitting control device 10 of the present disclosure allows the light-emitting elements to consistently maintain a constant output ratio when the dimming ratio is equal to or greater than a predetermined value, thereby realizing the expected light color.

[0052] In the light-emitting control device 10 of the present disclosure, when the input dimming rate is smaller than a predetermined value, the control unit 12 sets the correction value for the first light color to a constant value regardless of the input dimming rate, and adjusts the correction value for the second light color to a smaller value as the input dimming rate becomes smaller.

[0053] As a result, the light-emitting control device 10 of the present disclosure can adjust the correction value of a predetermined light-emitting element among a plurality of light-emitting elements when the dimming rate is equal to or lower than a predetermined value, thereby enabling the light-emitting control device 10 of the present disclosure to achieve an expected light color.

[0054] In the light-emitting control device 10 of the present disclosure, the correction value for the first light color before adjustment is performed is smaller than the correction value for the second light color before adjustment is performed.

[0055] As a result, the light-emitting control device 10 of the present disclosure can maintain the light color having a relatively small correction value and adjust the correction value of the light color having a relatively large correction value, thereby realizing the expected light color.

[0056] In the light-emitting control device 10 of the present disclosure, the correction value for the first light color before adjustment is the smallest of the multiple correction values ​​corresponding to the multiple light colors of the multiple light-emitting elements before adjustment.

[0057] As a result, the light-emitting control device 10 of the present disclosure can maintain the light color with the smallest correction value among the correction values ​​before adjustment, and adjust the correction values ​​of the other light colors, thereby enabling the light-emitting control device 10 of the present disclosure to achieve an expected light color.

[0058] The light emission control device 10 of the present disclosure further includes a storage unit 13 that stores the correction values ​​in advance.

[0059] This allows the light emission control device 10 to store the correction values ​​in advance during the manufacturing stage.

[0060] The light emitting device 20 of the present disclosure includes a light emitting control device 10 and a plurality of light emitting elements.

[0061] As a result, when the dimming signal is smaller than a predetermined value, the light emitting device 20 can output light in which the deviation of the light color realized by the multiple light emitting elements from the specified value is corrected by adjusting the balance of the output values ​​of the multiple light emitting elements. Thus, the light emitting device 20 of the present disclosure can realize an expected light color.

[0062] The lighting device 30 of the present disclosure includes a light emitting device 20 and a housing 31 that covers the light emitting device 20 .

[0063] As a result, when the dimming signal is smaller than a predetermined value, the lighting device 30 of the present disclosure adjusts the balance of the output values ​​of the multiple light-emitting elements, thereby outputting light in which the deviation of the light color realized by the multiple light-emitting elements from the specified value is corrected. Thus, the light-emitting device 20 of the present disclosure can realize an expected light color.

[0064] (Other embodiments) Although the embodiment has been described above, the present invention is not limited to the above embodiment.

[0065] In the above embodiment, the processes executed by a specific processing unit may be executed by another processing unit. The order of multiple processes may be changed, or multiple processes may be executed in parallel.

[0066] In the above embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded on a recording medium such as a hard disk or a semiconductor memory.

[0067] Furthermore, each component may be realized by hardware. Each component may be a circuit (or an integrated circuit). These circuits may form a single circuit as a whole, or each may be a separate circuit. Furthermore, each of these circuits may be a general-purpose circuit, or a dedicated circuit.

[0068] Furthermore, the general or specific aspects of the present invention may be realized as a system, an apparatus, a method, an integrated circuit, a computer program, or a computer-readable recording medium such as a CD-ROM, or may be realized as any combination of a system, an apparatus, a method, an integrated circuit, a computer program, and a recording medium.

[0069] In addition, the present invention also includes forms obtained by applying various modifications to each embodiment that a person skilled in the art may think of, or forms realized by arbitrarily combining the components and functions of each embodiment within the scope that does not deviate from the spirit of the present invention. [Explanation of symbols]

[0070] 10 Light emission control device 11 Input section 12 Control section 13 Storage section 20 Light emitting device 30 Lighting Equipment 31 Case

Claims

1. An input unit to which a dimming signal indicating a dimming rate of a plurality of light emitting elements having different light colors is input; a control unit that outputs a plurality of control signals for controlling the plurality of light-emitting elements based on the input dimming signal, Each of the plurality of control signals has a control value that is determined by calculation and correction based on the dimming ratio indicated by the input dimming signal and a correction value that is predetermined according to a light color of a light-emitting element to which the control signal is output, The control unit adjusts the difference between the correction value for the first light color and the correction value for the second light color so that the difference is smaller when the dimming rate is smaller than a predetermined value than when the dimming rate is equal to or larger than the predetermined value. Light emitting control device.

2. When the dimming rate is equal to or greater than the predetermined value, the correction value for the first light color is constant regardless of the input dimming rate, The correction value for the second light color is constant regardless of the input dimming rate. The light emission control device according to claim 1 .

3. When the input dimming ratio is smaller than a predetermined value, the control unit A correction value for the first light color is set to a constant value regardless of the input dimming rate. The correction value for the second light color is adjusted to a smaller value as the input dimming rate becomes smaller. The light emission control device according to claim 1 .

4. a correction value for the first light color before the adjustment is performed is smaller than a correction value for the second light color before the adjustment is performed; The light emission control device according to any one of claims 1 to 3.

5. a correction value for the first light color before the adjustment is performed is a smallest among a plurality of correction values ​​corresponding to a plurality of light colors of a plurality of light-emitting elements before the adjustment is performed; The light emission control device according to claim 4 .

6. Further, a storage unit is provided for storing the correction value in advance. The light emission control device according to any one of claims 1 to 5.

7. A light emission control device according to any one of claims 1 to 6, The plurality of light-emitting elements are provided. Light emitting device.

8. A light emitting device according to claim 7; A housing that covers the light emitting device. Lighting equipment.

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