Lighting control device, lighting device, and lighting control method

Abstract

To provide an illumination control device capable of increasing the guiding performance of people with light, an illuminating device, and an illumination control method.SOLUTION: The control signal is a dynamic signal that has a low output zone and a high output zone and is configured to repeat the low output zone and the high output zone. Defining the value obtained by 1.03 times the first minimum in the low output zone as P1, the value obtained by multiplying 0.97 times the maximum value in the high output region immediately after the first minimum value as P2, the value obtained by multiplying 0.97 times the maximum value that is the value immediately after the value P2 over time as P3, the value obtained by multiplying 1.03 times the second minimum value in the low output zone immediately after the maximum value as P4, the transition time from value P1 to value P2 as ta, and the transition time from value P3 to value P4 is tb, the control unit 20 outputs the control signal that satisfies ta / tb less than 2.0 to each of the first illuminating device 10a and the second illuminating device 10b.SELECTED DRAWING: Figure 4A

Description

Technical Field

[0001] The present disclosure relates to a lighting control device, a lighting device, and a lighting control method.

Background Art

[0002] Patent Document 1 discloses a guidance presentation system that guides human behavior by executing a presentation. The guidance presentation system includes an entrance / exit lighting device and a display shelf lighting device that guide human behavior by a presentation using irradiation light. The entrance / exit lighting device adjusts the illuminance of the light emitted to the entrance / exit. The display shelf lighting device adjusts the illuminance of the light emitted to the display shelf.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the conventional guidance presentation system, it is possible to guide a person by changing the illuminance of the light emitted by the entrance / exit lighting device and the display shelf lighting device, but it simply changes the illuminance, and there are cases where a person cannot be sufficiently guided.

[0005] Therefore, an object of the present disclosure is to provide a lighting control device, a lighting device, and a lighting control method that can enhance the guiding property of a person by light.

Means for Solving the Problems

[0006] A lighting control device according to one aspect of the present disclosure includes a control unit that outputs a control signal for controlling each of at least a first light source unit and a second light source unit included in a plurality of light source units, wherein the control signal has a low-output region including a minimum value of the control signal and a high-output region which is different from the low-output region and has a higher output of the control signal than the low-output region, and includes a maximum value of the control signal, and by repeating the low-output region and the high-output region, the luminous intensity of the light emitted by each of the first light source unit and the second light source unit, or the light emitted by each of the first light source unit and the second light source unit Horizontal plane of the irradiated surface irradiated The illuminance is a dynamic signal that repeatedly increases and decreases, and the first minimum value in the low-power region is multiplied by 1.03 and is the next value after the first minimum value over time, P2 is multiplied by 0.97 and is the maximum value in the high-power region immediately following the first minimum value over time, P3 is multiplied by 0.97 and is the maximum value over time following P2, and P4 is multiplied by 1.03 and is the second minimum value in the low-power region immediately following the maximum value over time, and values ​​P1 and P2 exist between the first minimum value and the maximum value over time, and values ​​P3 and P4 exist between the maximum value and the second minimum value over time, and the transition time from value P1 to value P2 is ta, and the transition time from value P3 to value P4 is tb, then the control unit, tb > ta or tb < ta is satisfied, and further ta / tb Satisfies 0.88 or less or 1.48 or more The control signal satisfying 2.0 or less is output to the first light source unit and the second light source unit, respectively.

[0007] Furthermore, an illumination device according to one aspect of the present disclosure comprises an illumination control device and a first light source unit and a second light source unit capable of emitting light toward a surface to be illuminated.

[0008] Furthermore, an illumination control method according to one aspect of the present disclosure outputs a control signal to control each of at least a first light source and a second light source included in a plurality of light source units, and the control signal has a low-output region including a minimum value of the control signal and a high-output region which is different from the low-output region and has a higher output of the control signal than the low-output region, and includes a maximum value of the control signal, and by repeating the low-output region and the high-output region, the luminous intensity of the light emitted by each of the first light source and the second light source, or the light emitted by each of the first light source and the second light source Horizontal plane of the irradiated surface irradiated The illuminance is a dynamic signal that repeatedly increases and decreases, and the first minimum value in the low-power region is multiplied by 1.03, and the value that follows the first minimum value over time is defined as P1, the maximum value in the high-power region immediately following the first minimum value is multiplied by 0.97, P2 is the maximum value multiplied by 0.97, and the value that follows the maximum value over time is defined as P3, and the second minimum value in the low-power region immediately following the maximum value is multiplied by 1.03, and the values ​​P1 and P2 exist between the first minimum value and the maximum value over time, and the values ​​P3 and P4 exist between the maximum value and the second minimum value over time, and the transition time from value P1 to value P2 is defined as ta, and the transition time from value P3 to value P4 is defined as tb, tb > ta or tb < ta is satisfied, and further ta / tb Satisfies 0.88 or less or 1.48 or more This includes outputting the control signal satisfying 2.0 or less to the first light source unit and the second light source unit, respectively. [Effects of the Invention]

[0009] According to the lighting control device etc. of this disclosure, it is possible to enhance the inductance of people by light. [Brief explanation of the drawing]

[0010]

Figure 1

Figure 2

Figure 3A

Figure 3B

Figure 4A

Figure 4B

Figure 5A

Figure 5B

Figure 5C

Figure 5D

Figure 5E

Figure 5F

[0011] The embodiments of this disclosure will be described below with reference to the drawings. The embodiments described below are all specific examples of this disclosure. Therefore, the numerical values, shapes, materials, components, arrangement and connection configurations of components, as well as the steps and order of steps shown in the following embodiments, are examples only and are not intended to limit this disclosure.

[0012] The figures are schematic diagrams and are not necessarily drawn precisely. Therefore, for example, the scales etc. in each figure do not necessarily match. Also, in each figure, the same reference numerals are given to substantially the same configurations, and duplicate explanations are omitted or simplified.

[0013] (Embodiment) <Configuration and Function> The lighting system 1 according to the following embodiment will be described with reference to FIGS. 1 to 4B.

[0014] FIG. 1 is a block diagram showing the lighting system 1 according to the embodiment. FIG. 2 is a schematic diagram showing the case where each of a plurality of lighting devices 10 irradiates light on an irradiated surface. FIG. 3A is a diagram showing a control signal. FIG. 3B is another diagram showing a control signal. FIG. 4A is a diagram showing the case where the light irradiated on the irradiated surface transitions linearly when each of a plurality of lighting devices 10 irradiates light on the irradiated surface. FIG. 4B is a diagram showing the case where the light irradiated on the irradiated surface transitions in a planar shape when each of a plurality of lighting devices 10 irradiates light on the irradiated surface.

[0015] As shown in FIG. 1, the lighting system 1 is an affordance lighting system that can guide a person by adjusting the lighting mode of the light emitted from the lighting device 10. For example, the lighting system 1 of the present embodiment can guide a person in a predetermined direction, gather the guided people within a predetermined area, or guide the people gathered within a predetermined area to disperse by adjusting the lighting mode. For example, it is known that a person is guided to a brighter place rather than a place with a darker vertical surface illuminance, which is the savannah effect. Therefore, in the lighting system 1, since it irradiates the ground, strictly speaking, it is different from the savannah effect related to the vertical surface illuminance, but by transitioning the light intensity to aim for an effect similar to this savannah effect and acting on the emotions of a person by this effect, a person can be guided.

[0016] Such lighting systems 1 can be used in places where it is necessary to guide many people, such as parks, amusement parks, train stations, and large-scale facilities.

[0017] As shown in Figures 1 and 2, the lighting system 1 comprises a plurality of lighting devices 10, a lighting control device 2, and a power supply unit 30.

[0018] [Lighting device 10] Each of the multiple lighting devices 10 is, for example, an outdoor lighting device 10 such as a streetlamp, or a facility lighting device 10 installed inside a facility. Each of the multiple lighting devices 10 in this embodiment is arranged along a passageway. In Figure 2, six lighting devices 10 are shown as an example of the multiple lighting devices 10. Note that the number of lighting devices 10 is merely an example and is not limited to six lighting devices 10. For example, the number of lighting devices 10 may be two or more, preferably three or more. Also, the lighting device 10 is an example of a first light source unit and a second light source unit.

[0019] Each of these multiple lighting devices 10 consists of a light source 11, a light emission control circuit (not shown), etc. The light source 11 is a light-emitting module on which multiple LED (Light Emitting Diode) elements are mounted. Each of the multiple LED elements includes a red LED chip, a blue LED chip, a green LED chip, a white LED chip, and a yellow LED chip. The light source 11 may also be configured to emit white light by combining a blue LED and a yellow phosphor. Furthermore, the light source 11 may be configured to emit various light colors by selectively combining two or more of these LED elements. However, it is not limited to these, and a configuration that is generally in practical use may be used. The light emission control circuit independently controls each LED chip, so that each of the multiple lighting devices 10 emits light onto the surface to be illuminated and irradiates the surface with light. The light source 11 may also be an example of a first light source unit and a second light source unit.

[0020] When the lighting device 10 receives a control signal from the lighting control device 2, it lights up in a lighting mode corresponding to the control signal. The lighting device 10 is equipped with a dimming function and a color temperature adjustment function.

[0021] For example, the lighting device 10 can adjust the brightness of the light emitted by the light source 11 in multiple steps as a dimming function, thereby making the emitted light dimmer or brighter. In other words, the lighting device 10 can periodically fluctuate the brightness of the emitted light. Here, "periodic" may refer to the same period or different periods.

[0022] Furthermore, the lighting device 10 has a color temperature adjustment function that allows it to emit white light ranging from low color temperatures such as incandescent light to high color temperatures such as warm white, neutral white, or daylight. In other words, the lighting device 10 can periodically fluctuate the hue of the emitted light. For example, in lighting effects, the lighting device 10 periodically changes the color temperature so as to repeatedly increase or decrease the redness of the emitted light.

[0023] Furthermore, the lighting device 10 may change the color of the emitted light by changing the wavelength of the emitted light as a lighting effect.

[0024] The relationship between the first, second, third, fourth, fifth, and sixth lighting devices 10 from one side of the multiple lighting devices 10 shown in Figure 2, and the first, second, third, fourth, fifth, and sixth light irradiation areas will be explained below.

[0025] The first lighting device 10 emits light and illuminates the first light-illuminated area on the illuminated surface of the passage. The second lighting device 10 emits light and illuminates the second light-illuminated area on the illuminated surface. The third lighting device 10 emits light and illuminates the third light-illuminated area on the illuminated surface. The fourth lighting device 10 emits light and illuminates the fourth light-illuminated area on the illuminated surface. The fifth lighting device 10 emits light and illuminates the fifth light-illuminated area on the illuminated surface. The sixth lighting device 10 emits light and illuminates the sixth light-illuminated area on the illuminated surface.

[0026] The first, second, third, fourth, fifth, and sixth light-irradiated surfaces are all different locations on the illuminated surfaces of the passage. In Figure 2, the first, second, third, fourth, fifth, and sixth lighting devices are arranged in this order, so the first, second, third, fourth, fifth, and sixth light-irradiated areas are also formed in this order. In the first, second, third, fourth, fifth, and sixth light-irradiated areas, two adjacent light-irradiated areas may partially overlap.

[0027] [Lighting control device 2] The lighting control device 2 can control multiple lighting devices 10 individually or collectively. In other words, the lighting control device 2 can cause multiple lighting devices 10 to light up in a predetermined manner according to the control signal by outputting a control signal to each of the multiple lighting devices 10 to light up in a predetermined manner according to the control signal.

[0028] The lighting control device 2 includes a control unit 20 that outputs control signals to each of the multiple lighting devices 10.

[0029] Here, as shown in Figures 3A and 3B, the control signal has a low-output region containing a minimum value of the control signal, and a high-output region that is different from the low-output region in that the output of the control signal is higher than that of the low-output region and contains a maximum value of the control signal. Specifically, the control signal is a dynamic output signal that repeatedly increases and decreases the luminous intensity of the light emitted by the first lighting device 10a and the second lighting device 10b, or the illuminance of the light emitted by the first lighting device 10a and the second lighting device 10b, by repeating the low-output region and the high-output region. For this reason, the first lighting device 10a and the second lighting device 10b, among the multiple lighting devices 10, emit light such that the luminous intensity or illuminance dynamically increases and decreases repeatedly in response to the control signal.

[0030] The low-power region is the region containing the local minimum in the control signal. The low-power region may also contain the minimum value in the control signal. The low-power region has one or more local minimums. If there is only one local minimum, that local minimum is the minimum value. The low-power region may also contain one or more local maximums. In Figures 3A and 3B, the low-power region contains multiple local minimums and multiple local maximums.

[0031] The high-power region is a region where the output of the control signal is higher than that of the low-power region, and which is distinct from the low-power region, and which includes the maximum value of the control signal. The high-power region may also include the maximum value of the control signal. The high-power region has one or more maximum values. Therefore, in the entire high-power region, the output of the control signal is high in the entire low-power region. If there is one maximum value, that maximum value becomes the maximum value. The high-power region may also contain one or more local minimum values. In Figures 3A and 3B, the high-power region includes multiple maximum values ​​and multiple local minimum values.

[0032] Furthermore, one cycle of the control signal may include multiple high-power regions and low-power regions.

[0033] Furthermore, the control signal may be a dynamic output signal consisting of a waveform signal that increases only once from the low-power region and a waveform signal that decreases only once from the high-power region per cycle. In other words, the control signal per cycle may be a signal composed of one or more low-power regions and one or more high-power regions. Also, the control signal per cycle may be a dynamic output signal consisting of a waveform signal that increases two or more times and a waveform signal that decreases two or more times. For this reason, the illuminance of the light emitted per cycle by each of the first lighting device 10a and the second lighting device 10b is also dynamic light consisting of light that increases in illuminance only once and light that decreases in illuminance only once. Furthermore, the illuminance of the light emitted per cycle by each of the first lighting device 10a and the second lighting device 10b may also be dynamic light consisting of light that increases in illuminance two or more times and light that decreases in illuminance two or more times. Note that the control signal may also include signals that turn the output of the lighting device 10 OFF or ON.

[0034] The control signals shown in Figures 3A and 3B are merely examples, and the control signals are not limited to those shown in Figures 3A and 3B.

[0035] Furthermore, since the first lighting device 10a and the second lighting device 10b, which are included in the multiple lighting devices 10, are arranged in this order along the passage from one side to the other, the control unit outputs different control signals to the first lighting device 10a and the second lighting device 10b, respectively. Specifically, the control unit 20 outputs control signals to the first lighting device 10a and the second lighting device 10b that have a difference of 3% or more when comparing at least one of the following four comparisons (1) to (4). (1) is a comparison between the first maximum value of the luminous intensity of the light emitted by the first lighting device 10a and the second maximum value of the luminous intensity of the light emitted by the second lighting device 10b. (2) is a comparison between the average value of the third maximum value and the first minimum value, which occurs immediately after the first minimum value of the luminous intensity of the light emitted by the first lighting device 10a, and the average value of the fourth maximum value and the second minimum value, which occurs immediately after the second minimum value of the luminous intensity of the light emitted by the second lighting device 10b. (3) is a comparison between the maximum horizontal illuminance of the illuminated surface illuminated by the light emitted by the first lighting device 10a and the maximum horizontal illuminance of the illuminated surface illuminated by the light emitted by the second lighting device 10b. (4) is a comparison between the average horizontal illuminance of the illuminated surface illuminated by the light emitted by the first lighting device 10a and the average horizontal illuminance of the illuminated surface illuminated by the light emitted by the second lighting device 10b.

[0036] This 3% is the value set so that people can perceive differences in brightness. Therefore, people can perceive differences in brightness if the difference is 3% or more.

[0037] Here, a difference of 3% or more may be, for example, a 3% difference between the first maximum value of the first lighting device 10a and the second maximum value of the second lighting device 10b, or a 3% difference between the second maximum value of the second lighting device 10b and the first maximum value of the first lighting device 10a. Either can be selectively set as the reference.

[0038] The control unit 20 outputs control signals to each of the multiple lighting devices 10 that emit light, so that light is irradiated to two or more locations (two or more surfaces to be illuminated) in the passageway.

[0039] Specifically, the control unit 20 outputs a control signal to the first lighting device 10a and the second lighting device 10b that satisfies the condition that transition time ta / transition time tb is 2.0 or less, i.e., a control signal that satisfies transition time tb > transition time ta or transition time tb < transition time ta. At this time, transition time ta / transition time tb is 2.0 or less. Furthermore, P1 is defined as the value obtained by multiplying the first local minimum in the low-power region by 1.03, which is the next value after the first local minimum over time. Furthermore, P2 is defined as the value obtained by multiplying the maximum in the high-power region immediately following the first local minimum by 0.97. Furthermore, P3 is defined as the value obtained by multiplying the maximum by 0.97, which is immediately following value P2 over time, and P4 is defined as the value obtained by multiplying the second local minimum in the low-power region immediately following the maximum over time by 1.03. Also, values ​​P1 and P2 exist between the first local minimum and the maximum over time. Furthermore, values ​​P3 and P4 lie between the maximum and second minimum values ​​over time. The transition time from value P1 to value P2 is denoted as ta, and the transition time from value P3 to value P4 is denoted as tb. Note that the positions of the maximum, first minimum, and second minimum values ​​shown in Figures 3A and 3B are merely examples and are not limited to those shown in Figures 3A and 3B.

[0040] Furthermore, as shown in Figure 3A, if the control signal satisfies the condition that transition time tb > transition time ta, then transition time ta / transition time tb may be 0.5 or less.

[0041] Here, the output of the control signal between values ​​P1 and P2 increases abruptly, as if moving from a low-power region to a high-power region. As a result, the brightness of the light emitted by the lighting device 10 increases (fades in). Also, the output of the control signal between values ​​P3 and P4 decreases gradually, as if moving from a high-power region to a low-power region. As a result, the brightness of the light emitted by the lighting device 10 decreases (fades out). Thus, the fade-out from value P3 to value P4 is a more gradual change in the brightness of the light emitted by the lighting device 10 than the fade-in from value P1 to value P2.

[0042] Furthermore, values ​​P1 and P4 may or may not be included in the low-power region. Similarly, values ​​P2 and P3 may or may not be included in the high-power region.

[0043] The first local minimum is a default local minimum among one or more local minimums in the low-power region. The second local minimum is a default local minimum among one or more local minimums in the high-power region. The maximum is a default local maximum among one or more local maximums in the high-power region.

[0044] Furthermore, if the first lighting device 10a and the second lighting device 10b are arranged in this order along the passageway, the control unit 20 outputs different control signals to the first lighting device 10a and the second lighting device 10b, respectively.

[0045] Specifically, the phases of the control signals output to the first lighting device 10a and the second lighting device 10b, among the multiple lighting devices 10, are different. More specifically, the control unit 20 transmits control signals with different phases to the first lighting device 10a and the second lighting device 10b, respectively. In other words, the control unit 20 transmits control signals with different phases to the first lighting device 10a and the second lighting device 10b, respectively, as shown by the solid and dashed lines in Figures 3A and 3B. As a result, as shown in Figures 3A and 3B, the phases of the output waveform of the light emitted by the first lighting device 10a and the output waveform of the light emitted by the second lighting device 10b are different.

[0046] Furthermore, the periods of the respective control signals output to the first lighting device 10a and the second lighting device 10b may be the same. In other words, the control signals may simply be output to the first lighting device 10a and the second lighting device 10b with different phases.

[0047] Furthermore, the periods of the control signals output to the first lighting device 10a and the second lighting device 10b may be different. In other words, the control signals may be output to the first lighting device 10a and the second lighting device 10b at different periods.

[0048] Furthermore, there is a difference of 27% or more between the maximum and minimum values ​​of the control signals output to the first lighting device 10a and the second lighting device 10b, respectively. In other words, there is a difference of 27% or more between the maximum and minimum values ​​of the control signals output to the first lighting device 10a, and there is a difference of 27% or more between the maximum and minimum values ​​of the control signals output to the second lighting device 10b. From this, there is a difference of 27% or more between the maximum and minimum values ​​of the luminous intensity of the light emitted by the first lighting device 10a, and a difference of 27% or more between the maximum and minimum values ​​of the horizontal illuminance irradiated onto the illuminated surface. Furthermore, there is a difference of 27% or more between the maximum and minimum values ​​of the luminous intensity of the light emitted by the second lighting device 10b, and a difference of 27% or more between the maximum and minimum values ​​of the horizontal illuminance irradiated onto the illuminated surface.

[0049] Here, a difference of 27% or more may be defined as a difference of 27% between the minimum value of the control signal and the maximum value of the control signal, or a difference of 27% between the maximum value of the control signal and the minimum value of the control signal. Either can be selectively set as the reference.

[0050] Furthermore, in each of the first lighting device 10a and the second lighting device 10b, the difference between the maximum and minimum luminous intensity may be 31% or more, and the difference between the maximum and minimum horizontal illuminance irradiated onto the illuminated surface may also be 31% or more. Moreover, in each of the first lighting device 10a and the second lighting device 10b, the difference between the maximum and minimum luminous intensity may be 47% or more, and the difference between the maximum and minimum horizontal illuminance irradiated onto the illuminated surface may also be 47% or more.

[0051] Furthermore, the horizontal illuminance of the illuminated surface is measured differently depending on the orientation of the illuminance meter. Specifically, even if the illuminance meter is placed in the same location, the measurement will differ depending on whether it is pointed in the direction of the light source relative to the light incident on the illuminated surface or whether it is placed horizontally. For this reason, in this embodiment, the horizontal illuminance of the illuminated surface is defined as the illuminance when the illuminance meter is placed horizontally, that is, when the light-receiving surface is facing vertically upward.

[0052] Furthermore, when light emitted from the first lighting device 10a and the second lighting device 10b is shone onto the surface to be illuminated, the light shone onto the surface may transition in a linear, curved, sawtooth, planar, L-shaped, or diagonal pattern. In other words, the lighting system 1 is designed so that the light shone onto the surface moves continuously in a linear, curved, sawtooth, planar, L-shaped, or diagonal pattern by emitting light from the first lighting device 10a and the second lighting device 10b.

[0053] Here, we will explain how light irradiated onto the illuminated surface transitions linearly using Figure 4A. In Figure 4A, the lighting system 1 uses six lighting devices 10 as multiple lighting devices 10, and illustrates a case where each of the multiple lighting devices 10 arranged along the passageway starts to light up in a sequence with different phases.

[0054] The first lighting device 10 from one side illuminates light-illuminated area A1. The second lighting device 10 from the same side illuminates light-illuminated area A2. The third lighting device 10 from the same side illuminates light-illuminated area A3. The fourth lighting device 10 from the same side illuminates light-illuminated area A4. The fifth lighting device 10 from the same side illuminates light-illuminated area A5. The sixth lighting device 10 from the same side illuminates light-illuminated area A6. As described above, light-illuminated areas A1 to A6 are arranged in this order from one side to the other.

[0055] For example, in the first stage of Figure 4A, the first lighting device 10 fades in to illuminate the light-irradiated area A1.

[0056] Next, in the second stage, the second lighting device 10 fades in to illuminate the light-illuminated area A2. At the same time, the first lighting device 10 finishes fading in and illuminates the light-illuminated area A1 with the brightest first illuminance.

[0057] Next, in the third stage, the third lighting device 10 fades in to illuminate the light-illuminated area A3. The second lighting device 10 finishes fading in and illuminates the light-illuminated area A3 with the brightest first illuminance. The third lighting device 10 also begins fading out and illuminates the light-illuminated area A1 with the second brightest second illuminance.

[0058] Next, in the fourth stage, the fourth lighting device 10 fades in to illuminate the light-illuminated area A4. The third lighting device 10 finishes fading in and illuminates the light-illuminated area A3 with the brightest illuminance (1st illuminance). The second lighting device 10 begins fading out and illuminates the light-illuminated area A2 with the second brightest illuminance (2nd illuminance). The first lighting device 10 begins fading out and illuminates the light-illuminated area A1 with the third brightest illuminance (3rd illuminance).

[0059] Next, in the fifth stage, the fifth lighting device 10 fades in to illuminate the light-illuminated area A5. The fourth lighting device 10 finishes fading in and illuminates the light-illuminated area A4 with the brightest illuminance (1st illuminance). The third lighting device 10 begins fading out and illuminates the light-illuminated area A3 with the second brightest illuminance (2nd illuminance). The second lighting device 10 begins fading out and illuminates the light-illuminated area A2 with the third brightest illuminance (3rd illuminance). The first lighting device 10 begins fading out and illuminates the light-illuminated area A1 with the fourth brightest illuminance (4th illuminance).

[0060] Next, in the sixth stage, the sixth lighting device 10 fades in to illuminate the light-illuminated area A6. The fifth lighting device 10 finishes fading in and illuminates the light-illuminated area A5 at the brightest illuminance level (1st illuminance). The fourth lighting device 10 begins fading out and illuminates the light-illuminated area A4 at the second brightest illuminance level (2nd illuminance). The third lighting device 10 begins fading out and illuminates the light-illuminated area A3 at the third brightest illuminance level (3rd illuminance). The second lighting device 10 begins fading out and illuminates the light-illuminated area A2 at the fourth brightest illuminance level (4th illuminance). The first lighting device 10 begins fading out and illuminates the light-illuminated area A1 at the fifth brightest illuminance level (5th illuminance).

[0061] In this way, when multiple lighting devices lined up along a passageway begin to fade in at different phases, the illuminated surface is suddenly brightly lit, reaching its brightest point, and then fades out, gradually dimming the brightness of the illuminated area. For example, to a person on one side, the transition of light on the illuminated surface appears as a linear tail.

[0062] The same applies when the light irradiated onto the surface transitions in a curved, sawtooth, L-shape, or diagonal pattern. This embodiment can be applied to curved, sawtooth, L-shaped, or diagonal passages.

[0063] Furthermore, the way in which light irradiated onto the surface transitions in a planar manner will be explained using Figure 4B.

[0064] The first lighting device 10 from one side illuminates the light-irradiated areas A1, B1, and C1. The same applies to the second and subsequent lighting devices 10. In this case, each lighting device 10 is equipped with multiple light sources 11.

[0065] For example, in Figure 4B, the light irradiation areas A1 to A6 are arranged in this order from one side to the other. The same applies to the other light irradiation areas B1 to B6 and C1 to C6. Also, the first light irradiation areas A1, B1, and C1 are arranged vertically in this order. The same applies to the other light irradiation areas A2 to A6, B2 to B6, and C2 to C6.

[0066] For example, in the first stage of Figure 4B, each light source 11 of the six lighting devices 10 fades in to illuminate the light-irradiated areas A1 to A6.

[0067] Next, in the second stage, each light source 11 of the six lighting devices 10 completes its fade-in phase and illuminates the light-illuminated areas A1 to A6 with the brightest first illuminance, while another light source 11 of the six lighting devices 10 fades in to illuminate the light-illuminated areas B1 to B6.

[0068] Subsequently, as shown in Figure 4A, the light illuminating the surface transitions from one side to the other in a direction perpendicular to it (vertical direction), so a detailed explanation is omitted. Note that when the light illuminating the surface transitions in a planar manner, the light illuminating the surface may also transition in a lateral direction.

[0069] Furthermore, the examples in Figure 4B are not limited to the above; for example, the light may transition radially from the lighting system 1, or it may transition in a way that converges towards the lighting system 1. Also, the light irradiated onto the illuminated surface may transition freely, not limited to these examples.

[0070] Furthermore, while Figures 4A and 4B show the light transitioning from one side to the other, it is also possible to show the light transitioning from the other side to the one side.

[0071] Thus, for example, the light illuminating the surface appears to transition in a linear, curved, sawtooth, planar, L-shaped, or diagonal pattern from the foot side of the lighting system 1. Furthermore, the speed at which the light transitions may be the same as the speed at which a person walks.

[0072] [Power supply section 30] As shown in Figure 1, the power supply unit 30 has the function of supplying power to multiple lighting devices 10 and lighting control devices 2. The power supply unit 30 is, for example, a power supply circuit in which multiple electronic components are mounted on a printed circuit board. The power supply unit 30 generates, for example, the driving power to make each of the multiple light sources 11 emit light. Specifically, the power supply unit 30 generates the driving power to make the light sources 11 emit light and supplies this driving power to each light source 11. In other words, the power supply unit 30 converts commercial AC power into DC power and supplies this DC power to each light source 11 as driving power to make the light sources 11 emit light, causing the light-emitting elements of the light sources 11 in Figure 2 to emit light.

[0073] [summary] In the lighting system 1 of this embodiment, by irradiating a surface to be illuminated with light, the light can be made to transition in a linear, curved, sawtooth, planar, L-shaped, or diagonal pattern. Therefore, by creating a lighting effect that makes light flow from one point to another, it is possible to guide people from one point to another. For example, by making the light transition in a linear, curved, sawtooth, planar, L-shaped, or diagonal pattern, it is possible to disperse people gathered in a predetermined area or to gather people in a predetermined area.

[0074] Furthermore, in the lighting system 1 of this embodiment, by combining changes in illuminance and / or color temperature with light transitions, it is possible to enhance the effect of guiding people by creating a lighting effect in which light flows from one point to another.

[0075] [Evaluation Results] First, the reason for setting ta / tb = 2.0 or less will be explained using Figures 5A to 5C. Figure 5A shows the relationship between the percentage of good judgments and (transition time ta when fading in) / (transition time tb when fading out). Figure 5B shows the relationship between (transition time ta when fading in) / (transition time tb when fading out) and the percentage of good judgments. Figure 5C shows the relationship between the transition time ta when fading in, the transition time tb when fading out, and the judgment result of the induction effect. In Figure 5C, the value of the transition time ta is shown when the transition time tb is set to 1.

[0076] Five lighting devices 10 were placed outdoors at 5m intervals, and the five lighting devices 10 were turned on at night. At this time, control signals for the five lighting devices 10 to execute the effect of this embodiment were input to the five lighting devices 10. When the effect was played back in which the ratio of the transition time ta when fading in to the transition time tb when fading out was gradually changed, the subjects evaluated whether there was an inductive effect. As a result, as shown in Figure 5A, when this result is approximated by the solid line approximation curve, it was found that there was an inductive effect when ta / tb = 2.0 or less.

[0077] Furthermore, as shown in Figure 5B, 100% of people received a good rating when ta / tb was 0.33, 0.47, 0.67, 0.88, and 1.48. Also, 33% of people received a good rating when ta / tb was 1.78. For this reason, it was deemed acceptable for ta / tb to be 1.48 or less.

[0078] Next, the reason for setting the threshold at 3% or more will be explained using Figure 5D. Figure 5D is a diagram showing the relationship between the difference between the illuminance of the lighting device 10 in Embodiment 1 and the reference illuminance provided by the reference lighting device, and whether or not the subject can be identified.

[0079] Two lighting devices 10 were placed side-by-side outdoors at a 1m interval, and both lighting devices 10 were turned on at night. At this time, several subjects evaluated which was brighter: the two lighting devices 10 of this embodiment or the reference illuminance from two reference lighting devices.

[0080] As shown in Figure 5D, the illuminance of one set of lighting devices was fixed (reference illuminance), and the illuminance values ​​of the other two lighting devices 10 were gradually reduced from 10% below the reference illuminance to 7%, 6%, 5%, 4%, 3%, and 2%, and each was evaluated by multiple subjects.

[0081] As a result, it was possible to perceive differences in illuminance up to 3%. From this result, it was found that people can perceive differences in illuminance of 3% or more.

[0082] Next, the reason for setting the threshold at 27% or higher will be explained using Figures 5E and 5F. Figure 5E shows the relationship between the difference between the maximum and minimum values ​​and the result of the induction effect assessment. Figure 5F shows the relationship between the number of people who gave a good rating and the difference between the maximum and minimum values.

[0083] Five lighting devices 10 were placed outdoors at 5m intervals, and the five lighting devices 10 were turned on at night. At this time, control signals for the five lighting devices 10 to execute the performance of this embodiment were input to the five lighting devices 10. When the performance, in which the difference between the maximum and minimum illuminance values ​​was gradually changed, was played back, the subjects evaluated whether or not there was an induction effect. As a result, an induction effect was evaluated when the difference between the maximum and minimum values ​​was approximately 31% or more. As shown in Figure 5F, when this result is approximated by a solid line approximation curve, it was found that an induction effect was observed when the difference between the maximum and minimum values ​​was 27% or more.

[0084] <Effects and Effects> Next, the effects and advantages of the lighting control device 2, lighting device 10, and lighting control method in this embodiment will be described.

[0085] As described above, the lighting control device 2 of this embodiment includes a control unit 20 that outputs control signals to control the first lighting device 10a and the second lighting device 10b, which are included in the plurality of lighting devices 10. The control signal has a low-output region that includes a minimum value of the control signal, and a high-output region that is different from the low-output region and has a higher output of the control signal than the low-output region, and includes a maximum value of the control signal. The signal is dynamic such that the luminous intensity of the light emitted by the first lighting device 10a and the second lighting device 10b, or the illuminance of the light emitted by the first lighting device 10a and the second lighting device 10b, increases and decreases repeatedly by repeating the low-output region and the high-output region. The first minimum value in the low-output region is 1.03 times that value. Let P1 be the value that occurs after the first minimum over time, P2 be the value obtained by multiplying the maximum value in the high-power region immediately following the first minimum over time by 0.97, P3 be the value obtained by multiplying the maximum value by 0.97 and occurring immediately following P2 over time, and P4 be the value obtained by multiplying the second minimum value in the low-power region immediately following the maximum over time by 1.03, with values ​​P1 and P2 existing between the first minimum and the maximum over time, and values ​​P3 and P4 existing between the maximum value and the second minimum over time, and let ta be the transition time from value P1 to value P2, and tb be the transition time from value P3 to value P4, then the control unit 20 outputs a control signal to the first lighting device 10a and the second lighting device 10b, respectively, that satisfies ta / tb to be 2.0 or less.

[0086] According to this, each of the first lighting device 10a and the second lighting device 10b emits dynamic light that periodically increases or decreases in intensity or illuminance, based on a dynamic control signal that alternates between a low-power region and a high-power region. As a result, the surface to be illuminated is irradiated with light whose brightness increases or decreases periodically.

[0087] Also, if, for example, when ta / tb is 2.0 or less, tb > ta for each of the control signals transmitted to the first lighting device 10a and the second lighting device 10b, each of the first lighting device 10a and the second lighting device 10b emits light that suddenly brightens during fade-in and emits light whose brightness gradually decreases during fade-out. Therefore, the light irradiated on the irradiated surface changes continuously. As a result, a person's awareness to move according to this change is activated.

[0088] Also, if, for example, when ta / tb is 2.0 or less, tb < ta for each of the control signals transmitted to the first lighting device 10a and the second lighting device 10b, each of the first lighting device 10a and the second lighting device 10b emits light that gradually brightens during fade-in and emits light such that its brightness decreases faster than in fade-in during fade-out. Therefore, the light irradiated on the irradiated surface does not change drastically, and people can be guided without spoiling the landscape.

[0089] Therefore, according to this lighting control device 2, the guiding property of people by light can be enhanced. As a result, in this lighting control device 2, affordance lighting can be realized. [[ID=lo]]

[0090] In particular, according to this lighting system 1, by providing each of the first lighting device 10a and the second lighting device 10b, it is not necessary to mount a drive mechanism for changing the direction of the light emitted by the lighting device 10 itself on the lighting device 10. Therefore, an increase in the manufacturing cost of the lighting system 1 can be suppressed. Also, since no drive mechanism is provided, it is not necessary to supply power to the drive mechanism. Furthermore, since no drive mechanism is required, an increase in the maintenance frequency of the lighting system 1 can also be suppressed. As a result, in the lighting system 1, an increase in the manufacturing cost can be suppressed.

[0091] Furthermore, the lighting control method of this embodiment outputs control signals to control the first lighting device 10a and the second lighting device 10b, which are included in the plurality of lighting devices 10. The control signal has a low-output region that includes the minimum value of the control signal, and a high-output region that is different from the low-output region and has a higher output of the control signal than the low-output region, and includes the maximum value of the control signal. By repeating between the low-output region and the high-output region, the luminous intensity of the light emitted by the first lighting device 10a and the second lighting device 10b, or the illuminance of the light emitted by the first lighting device 10a and the second lighting device 10b, increases and decreases repeatedly. The first minimum value in the low-output region is multiplied by 1.03, and the first minimum value is... The following values ​​are set over time, P1 being the next value, P2 being the maximum value in the high-power region immediately following the first minimum value multiplied by 0.97, P3 being the maximum value multiplied by 0.97 and occurring immediately after P2, and P4 being the second minimum value in the low-power region immediately following the maximum value multiplied by 1.03, with values ​​P1 and P2 existing between the first minimum value and the maximum value over time, and values ​​P3 and P4 existing between the maximum value and the second minimum value over time, and the transition time from value P1 to value P2 being ta, and the transition time from value P3 to value P4 being tb, and the control signals that satisfy ta / tb being 2.0 or less are output to the first lighting device 10a and the second lighting device 10b, respectively.

[0092] This lighting control method also produces the same effects as described above.

[0093] Furthermore, in the lighting device 10 of this embodiment, the control unit 20 outputs a control signal to the first lighting device 10a and the second lighting device 10b that satisfies the ta / tb ratio to 1.48 or less. According to this, the fade-out transition time tb can be made longer or shorter than the fade-in transition time ta. Therefore, the inductance of light can be enhanced.

[0094] Furthermore, in the lighting device 10 of this embodiment, the difference between the maximum and minimum values ​​of the luminous intensity of the light emitted by the first lighting device 10a in response to the control signal output to the first lighting device 10a, or the maximum and minimum values ​​of the illuminance of the light emitted by the first lighting device 10a in response to the control signal, is 27% or more. Also, the difference between the maximum and minimum values ​​of the luminous intensity of the light emitted by the second lighting device 10b in response to the control signal output to the second lighting device 10b, or the maximum and minimum values ​​of the illuminance of the light emitted by the second lighting device 10b in response to the control signal, is 27% or more.

[0095] According to this, the size and brightness of the light-illuminated area of ​​the surface being illuminated can be changed. Therefore, it is possible to create effects that enhance the guiding effect on people by using the light illuminating the surface being illuminated.

[0096] Furthermore, in the lighting control device 2 of this embodiment, the phases of the control signals output to the first lighting device 10a and the second lighting device 10b are different.

[0097] According to this, the first illumination device 10a and the second illumination device 10b each emit dynamic light that increases and decreases at different periods, based on a control signal, so that the light output changes. As a result, the surface to be illuminated is irradiated with light that increases and decreases in brightness at different periods, so the light irradiated onto the surface can transition at substantially the same speed. This allows a person to focus on the light irradiated onto the surface, thereby concentrating the person in a predetermined area.

[0098] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a and the second lighting device 10b is irradiated onto the surface to be irradiated, the light irradiated onto the surface to be irradiated transitions in a linear fashion.

[0099] According to this method, the light shining on the illuminated surface can be made to transition in a linear fashion, allowing people to be guided according to the transition of light. In other words, when applied to a linear passageway, lighting effects that make light flow from one point to another can be used to guide people from one point to another.

[0100] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a and the second lighting device 10b is irradiated onto the surface to be illuminated, the light irradiated onto the surface transitions in a curved manner.

[0101] According to this, when applied to curved passageways, lighting effects that create the illusion of light flowing from one point to another can guide people from one point to another.

[0102] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a and the second lighting device 10b is irradiated onto the surface to be illuminated, the light irradiated onto the surface transitions in a sawtooth pattern.

[0103] According to this, when applied to a sawtooth-shaped passageway, lighting effects that create the illusion of light flowing from one point to another can guide people from one point to another.

[0104] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a and the second lighting device 10b is irradiated onto the surface to be irradiated, the light irradiated onto the surface to be irradiated transitions in a planar manner.

[0105] According to this, it is possible to guide people by using lighting effects that either disperse people gathered in a designated area or gather people in a designated area.

[0106] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a and the second lighting device 10b is irradiated onto the surface to be illuminated, the light irradiated onto the surface transitions in an L-shape.

[0107] According to this, when applied to an L-shaped passageway, lighting effects that create the illusion of light flowing from one point to another can guide people from one point to another.

[0108] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a and the second lighting device 10b is irradiated onto the surface to be illuminated, the light irradiated onto the surface transitions in a diagonal pattern.

[0109] According to this, when applied to diagonally shaped passageways, lighting effects that create the illusion of light flowing from one point to another can guide people from one point to another.

[0110] Furthermore, in the lighting control device 2 of this embodiment, the periods of the respective control signals output to the first lighting device 10a and the second lighting device 10b are the same.

[0111] According to this, the first illumination device 10a and the second illumination device 10b each emit dynamic light that periodically increases and decreases in brightness based on a control signal. As a result, the surface to be illuminated is irradiated with light whose brightness periodically increases and decreases, so that the light irradiated onto the surface can transition at a predetermined speed.

[0112] (Other variations, etc.) Although the present disclosure has been described above based on embodiments, the present disclosure is not limited to these embodiments.

[0113] For example, in this embodiment, the lighting device may include a lighting control device and a first light source unit and a second light source unit that can emit light toward the surface to be illuminated. In this case, the light source unit may be a light source having an LED element mounted on the lighting device. Alternatively, the lighting device may be configured as a lighting system by providing multiple units in a passageway.

[0114] Furthermore, the control units included in the lighting control device, lighting device, and lighting control method in this embodiment are typically implemented as LSIs, which are integrated circuits. These may be individually integrated into a single chip, or some or all of them may be integrated into a single chip.

[0115] Furthermore, integrated circuit implementation is not limited to LSIs; it may also be achieved using dedicated circuits or general-purpose processors. Field-Programmable Gate Arrays (FPGAs), which can be programmed after LSI manufacturing, or reconfigurable processors, which allow for the reconfiguration of the connections and settings of circuit cells within the LSI, may also be used.

[0116] In the above embodiment, each component may be implemented by dedicated hardware or by executing a software program suitable for each component. Each component may also be implemented by a program execution unit such as a CPU or processor reading and executing a software program recorded on a storage medium such as a hard disk or semiconductor memory.

[0117] Furthermore, all figures used above are illustrative to illustrate the present disclosure, and the embodiments of this disclosure are not limited to the figures exemplified.

[0118] Furthermore, the division of functional blocks in the block diagram is just one example; multiple functional blocks can be implemented as a single functional block, a single functional block can be divided into multiple parts, or some functions can be moved to other functional blocks. In addition, the functions of multiple functional blocks with similar functions can be processed in parallel or time-sharing by a single piece of hardware or software.

[0119] Furthermore, the order in which each step in the flowchart is performed is illustrative for the purpose of specifically illustrating this disclosure, and may be in a different order. Also, some of the above steps may be performed simultaneously (in parallel) with other steps.

[0120] The following describes the features of the lighting control device, lighting device, and lighting control method described based on the above embodiment.

[0121] <Technology 1> It includes a control unit that outputs control signals for controlling at least one first light source unit and one second light source unit, which are included in a plurality of light source units, The aforementioned control signal is The system has a low-output region including a minimum value of the control signal, and a high-output region which is different from the low-output region and has a higher output of the control signal than the low-output region, and includes a maximum value of the control signal. The signal is dynamic such that the luminous intensity of the light emitted by the first light source and the second light source, or the illuminance of the light emitted by the first light source and the second light source, repeatedly increases and decreases by repeating the low-power region and the high-power region. P1 is defined as the value obtained by multiplying the first minimum in the low-power region by 1.03, and which is the next value obtained over time from the first minimum. P2 is defined as the value obtained by multiplying the maximum value in the high-power region immediately following the first minimum value by 0.97. The value obtained by multiplying the aforementioned maximum value by 0.97 is defined as P3, which is the value immediately following P2 in terms of time. P4 is defined as the value obtained by multiplying the second minimum value in the low-power region immediately following the aforementioned maximum value by 1.03. The aforementioned values ​​P1 and P2 exist between the first local minimum and the local maximum over time. The aforementioned values ​​P3 and P4 lie between the aforementioned maximum value and the aforementioned second minimum value over time. Let ta be the transition time from the aforementioned value P1 to the aforementioned value P2. If the transition time from the aforementioned value P3 to the aforementioned value P4 is denoted as tb, The control unit outputs the control signal satisfying that ta / tb is 2.0 or less to the first light source unit and the second light source unit, respectively. Lighting control device.

[0122] <Technology 2> The control unit outputs the control signal satisfying ta / tb = 1.48 or less to the first light source unit and the second light source unit, respectively. A lighting control device as described in Technical 1.

[0123] <Technology 3> The difference between the maximum and minimum values ​​of the luminous intensity of the light emitted by the first light source unit as a result of the control signal output to the first light source unit, or the maximum and minimum values ​​of the illuminance of the light emitted by the first light source unit as a result of the control signal, is 27% or more. The difference between the maximum and minimum values ​​of the luminous intensity of the light emitted by the second light source unit as a result of the control signal output to the second light source unit, or the maximum and minimum values ​​of the illuminance of the light emitted by the second light source unit as a result of the control signal, is 27% or more. A lighting control device as described in Technology 1 or 2.

[0124] <Technology 4> The phases of the respective control signals output to the first light source unit and the second light source unit are different. A lighting control device as described in any one of the technologies 1 to 3.

[0125] <Technology 5> When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in a linear fashion. A lighting control device described in any one of the technologies 1 to 4.

[0126] <Technology 6> When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in a curved manner. A lighting control device described in any one of the technologies 1 to 4.

[0127] <Technology 7> When light emitted from the first light source and the second light source irradiates a surface to be irradiated, the light irradiated onto the surface transitions in a sawtooth pattern. A lighting control device described in any one of the technologies 1 to 4.

[0128] <Technology 8> When light emitted from the first light source and the second light source irradiates a surface to be irradiated, the light irradiated onto the surface to be irradiated transitions in a planar manner. A lighting control device described in any one of the technologies 1 to 4.

[0129] <Technology 9> When light emitted from the first light source and the second light source irradiates a surface to be illuminated, the light irradiated onto the surface transitions in an L-shape. A lighting control device described in any one of the technologies 1 to 4.

[0130] <Technology 10> When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in a diagonal pattern. A lighting control device described in any one of the technologies 1 to 4.

[0131] <Technology 11> The periods of the respective control signals output to the first light source unit and the second light source unit are the same. A lighting control device as described in any one of the technologies 1 to 10.

[0132] <Technology 12> A lighting control device described in any one of the technologies 1 to 11, It comprises a first light source unit and a second light source unit that can emit light toward the surface to be illuminated. Lighting device.

[0133] <Technology 13> Outputting control signals to control at least the first and second light sources included in multiple light source units, The aforementioned control signal is The system has a low-output region including a minimum value of the control signal, and a high-output region which is different from the low-output region and has a higher output of the control signal than the low-output region, and includes a maximum value of the control signal. The signal is dynamic such that the luminous intensity of the light emitted by the first light source and the second light source, or the illuminance of the light emitted by the first light source and the second light source, repeatedly increases and decreases by repeating the low-power region and the high-power region. P1 is defined as the value obtained by multiplying the first minimum in the low-power region by 1.03, and which is the next value obtained over time from the first minimum. P2 is defined as the value obtained by multiplying the maximum value in the high-power region immediately following the first minimum value by 0.97. The value obtained by multiplying the aforementioned maximum value by 0.97 is defined as P3, which is the value immediately following P2 in terms of time. P4 is defined as the value obtained by multiplying the second minimum value in the low-power region immediately following the aforementioned maximum value by 1.03. The aforementioned values ​​P1 and P2 exist between the first local minimum and the local maximum over time. The aforementioned values ​​P3 and P4 lie between the aforementioned maximum value and the aforementioned second minimum value over time. Let ta be the transition time from the aforementioned value P1 to the aforementioned value P2. If the transition time from the aforementioned value P3 to the aforementioned value P4 is denoted as tb, This includes outputting the control signal that satisfies ta / tb to 2.0 or less to the first light source unit and the second light source unit, respectively. Lighting control method.

[0134] Furthermore, this disclosure also includes forms obtained by applying various modifications to the embodiments that a person skilled in the art could conceive of, and forms realized by arbitrarily combining the components and functions of the embodiments without departing from the spirit of this disclosure. [Explanation of Symbols]

[0135] 2. Lighting control device 10. Lighting device (first light source unit and second light source unit) 10a 1st lighting device (1st light source section) 10b Second lighting device (second light source section) 11. Light source (first light source unit and second light source unit) 20 Control Unit

Claims

1. It includes a control unit that outputs control signals for controlling at least one first light source unit and one second light source unit, which are included in a plurality of light source units, The aforementioned control signal is The system has a low-output region including a minimum value of the control signal, and a high-output region which is different from the low-output region and has a higher output of the control signal than the low-output region, and includes a maximum value of the control signal. The signal is dynamic such that by repeatedly switching between the low-power region and the high-power region, the luminous intensity of the light emitted by the first light source and the second light source, or the horizontal illuminance of the surface illuminated by the light emitted by the first light source and the second light source, repeatedly increases and decreases. P1 is defined as the value obtained by multiplying the first minimum value in the low-power region by 1.03, and which increases over time from the first minimum value. P2 is defined as the value obtained by multiplying the maximum value in the high-power region immediately following the first minimum value by 0.

97. The value obtained by multiplying the aforementioned maximum value by 0.97 is defined as P3, which is the value immediately following P2 in terms of time. P4 is defined as the value obtained by multiplying the second minimum value in the low-power region immediately following the aforementioned maximum value by 1.

03. The aforementioned values ​​P1 and P2 exist between the first local minimum and the local maximum over time. The aforementioned values ​​P3 and P4 lie between the aforementioned maximum value and the aforementioned second minimum value over time. Let ta be the transition time from the aforementioned value P1 to the aforementioned value P2. If the transition time from the aforementioned value P3 to the aforementioned value P4 is denoted as tb, The control unit outputs the control signal to the first light source unit and the second light source unit, respectively, which satisfies tb > ta or tb < ta, and further satisfies ta / tb to 0.88 or less, or 1.48 or more and 2.0 or less. Lighting control device.

2. The control unit outputs the control signal satisfying that ta / tb is 0.88 or less to the first light source unit and the second light source unit, respectively. The lighting control device according to claim 1.

3. The difference between the maximum and minimum values ​​of the luminous intensity of the light emitted by the first light source unit in response to the control signal output to the first light source unit, or the maximum and minimum values ​​of the horizontal illuminance of the surface illuminated by the light emitted by the first light source unit in response to the control signal, is 27% or more. The difference between the maximum and minimum values ​​of the luminous intensity of the light emitted by the second light source unit in response to the control signal output to the second light source unit, or the maximum and minimum values ​​of the horizontal illuminance of the surface illuminated by the light emitted by the second light source unit in response to the control signal, is 27% or more. The lighting control device according to claim 1 or 2.

4. The phases of the respective control signals output to the first light source unit and the second light source unit are different. The lighting control device according to claim 1 or 2.

5. When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in a linear trajectory from one point on the surface to another. The lighting control device according to claim 1 or 2.

6. When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in a curved trajectory from one point on the surface to another. The lighting control device according to claim 1 or 2.

7. When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in a sawtooth-like trajectory from one point on the surface to another. The lighting control device according to claim 1 or 2.

8. When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions as a whole to trace a planar trajectory from one point on the surface to another. The lighting control device according to claim 1 or 2.

9. When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in an L-shaped trajectory from one point on the surface to another. The lighting control device according to claim 1 or 2.

10. When light emitted from the first light source and the second light source irradiates the surface to be irradiated, the light irradiated onto the surface transitions in a diagonal trajectory from one point on the surface to another. The lighting control device according to claim 1 or 2.

11. The periods of the respective control signals output to the first light source unit and the second light source unit are the same. The lighting control device according to claim 1 or 2.

12. A lighting control device according to claim 1 or 2, It comprises a first light source unit and a second light source unit that can emit light toward the surface to be illuminated. Lighting device.

13. Outputting control signals to control at least the first and second light sources included in multiple light source units, The aforementioned control signal is The system has a low-output region including a minimum value of the control signal, and a high-output region which is different from the low-output region and has a higher output of the control signal than the low-output region, and includes a maximum value of the control signal. The signal is dynamic such that by repeatedly switching between the low-power region and the high-power region, the luminous intensity of the light emitted by the first light source and the second light source, or the horizontal illuminance of the surface illuminated by the light emitted by the first light source and the second light source, repeatedly increases and decreases. P1 is defined as the value obtained by multiplying the first minimum value in the low-power region by 1.03, and which increases over time from the first minimum value. P2 is defined as the value obtained by multiplying the maximum value in the high-power region immediately following the first minimum value by 0.

97. The value obtained by multiplying the aforementioned maximum value by 0.97 is defined as P3, which is the value immediately following P2 in terms of time. P4 is defined as the value obtained by multiplying the second minimum value in the low-power region immediately following the aforementioned maximum value by 1.

03. The aforementioned values ​​P1 and P2 exist between the first local minimum and the local maximum over time. The aforementioned values ​​P3 and P4 lie between the aforementioned maximum value and the aforementioned second minimum value over time. Let ta be the transition time from the aforementioned value P1 to the aforementioned value P2. If the transition time from the aforementioned value P3 to the aforementioned value P4 is denoted as tb, The control signal that satisfies tb > ta or tb < ta, and further satisfies ta / tb being 0.88 or less, or 1.48 or more and 2.0 or less, is output to the first light source unit and the second light source unit, respectively. Lighting control method.

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