Lighting control device, lighting device, and lighting control method

Abstract

To provide an illumination control device, an illuminating device, and an illumination control method capable of enhancing noticeability and guidance ability to persons with light.SOLUTION: An illumination control device 2 comprises a control unit 20 that outputs a control signal for controlling each of a first illuminating device 10a, a second illuminating device 10b, a third illuminating device 10c, and a fourth illuminating device 10d. A control signal is such a dynamic signal that an output of light emitted by each of the first illuminating device 10a, the second illuminating device 10b, the third illuminating device 10c, and the fourth illuminating device 10d repeatedly increases or decreases. In a case where the first illuminating device 10a, the second illuminating device 10b, the third illuminating device 10c, and the fourth illuminating device 10d are arranged side by side from one side of a passage toward the other side in this order, the control unit 20 outputs a control signal that satisfies t1a≠t1b when t2a is larger than t1a and t2b is larger than t1b, to each of the first illuminating device 10a, the second illuminating device 10b, the third illuminating device 10c, and the fourth illuminating device 10d.SELECTED DRAWING: Figure 4

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 a conventional guidance presentation system, a person can be guided 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 attracted and 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 attractiveness and guidance to 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 control signals for controlling a first light source unit, a second light source unit, a third light source unit, and a fourth light source unit, wherein the control signals are dynamic signals such that the output of light emitted by each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit repeatedly increases and decreases, and the maximum value of the output of the control signal output to the first light source unit or the output of light emitted by the first light source unit is P1a, and the closest output to the second light source unit over time from the maximum value P1a is... Let P2a be the maximum value of the output of the control signal or the light output emitted by the second light source unit, and let P3a be the maximum value of the control signal or the light output emitted by the first light source unit that is closest to the maximum value P1a over time, let t1a be the time difference between the time of the maximum value P1a and the time of the maximum value P2a, and let t2a be the time difference between the time of the maximum value P2a and the time of the maximum value P3a, and let P3a be the maximum value of the output of the control signal or the light output emitted by the third light source unit that is output to the third light source unit. Let P1b be the maximum value of the control signal output to the fourth light source unit or the output of light emitted by the fourth light source unit that is closest to the maximum value P1b over time, and let P2b be the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit that is closest to the maximum value P1b over time, and let t1b be the time difference between the time of the maximum value P1b and the time of the maximum value P2b, and let t2b be the time difference between the time of the maximum value P2b and the time of the maximum value P3b, then the first light source unit, front When the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along the passage from one side to the other, and t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light such that t1a ≠ t1b, or the control unit outputs the control signal that satisfies t1a ≠ t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit when t2a > t1a and t2b > t1b.

[0007] In addition, an illumination control device according to an aspect of the present disclosure includes a control unit that outputs control signals for controlling each of a first light source unit, a second light source unit, and a third light source unit. The control signals are dynamic signals such that the outputs of the lights emitted by the first light source unit, the second light source unit, and the third light source unit each repeat increases and decreases. Let the maximum value of the output value in the control signal output to the first light source unit or the output of the light emitted by the first light source unit be P1a. Let the maximum value closest in time from the maximum value P1a to the maximum value of the output value in the control signal output to the second light source unit or the output of the light emitted by the second light source unit be P2a. In the control signal output to the first light source unit or the output of the light emitted by the first light source unit, let the maximum value closest in time from the maximum value P1a be P3a. Let the time difference between the time point of the maximum value P1a and the time point of the maximum value P2a be t1a. Let the time difference between the time point of the maximum value P2a and the time point of the maximum value P3a be t2a. Let the maximum value of the output value in the control signal output to the third light source unit or the output of the light emitted by the third light source unit be P1b. In the control signal output to the third light source unit or the output of the light emitted by the third light source unit, let the maximum value closest in time from the maximum value P1b be P3b. Let the time difference between the time point of the maximum value P1b and the time point of the maximum value P2a be t1b. Let the time difference between the time point of the maximum value P1b and the time point of the maximum value P3b be t2b. When the first light source unit, the second light source unit, and the third light source unit are arranged side by side in this order along one side to the other side of the passage, when t2a>t1a and t2b>t1b, light is output from the first light source unit, the second light source unit, and the third light source unit so as to satisfy t1a<t1b. Alternatively, when t2a>t1a and t2b>t1b, the control unit outputs the control signal that satisfies t1a<t1b to each of the first light source unit, the second light source unit, and the third light source unit.

[0008] Furthermore, an illumination control device according to one aspect of the present disclosure includes a control unit that outputs control signals for controlling a first light source unit, a second light source unit, and a third light source unit, wherein the control signals are dynamic signals such that the output of light emitted by each of the first light source unit, the second light source unit, and the third light source unit repeatedly increases and decreases, and the maximum value of the output of the control signal output to the first light source unit or the output of light emitted by the first light source unit is defined as P1a, the maximum value of the control signal output to the second light source unit or the output of light emitted by the second light source unit that is closest to the maximum value P1a over time is defined as P2a, the maximum value of the control signal output to the first light source unit or the output of light emitted by the first light source unit that is closest to the maximum value P1a over time is defined as P3a, the time difference between the time of the maximum value P1a and the time of the maximum value P2a is defined as t1a, and the time difference between the time of the maximum value P2a and the time of the maximum value P3a is defined as t2a, and the third light source Let P1b be the maximum value of the control signal output to the unit or the output of light emitted by the third light source unit, and let P3b be the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit that is closest to the maximum value P1b over time, let t1b be the time difference between the time of the maximum value P1b and the time of the maximum value P2a, and let t2b be the time difference between the time of the maximum value P1b and the time of the maximum value P3b. If the first light source unit, the second light source unit and the third light source unit are arranged in this order along the passage from one side to the other, and t2a>t1a and t2b>t1b, then the first light source unit, the second light source unit and the third light source unit will output light so as to satisfy t1a>t1b, or the control unit will output the control signal that satisfies t1a>t1b to each of the first light source unit, the second light source unit and the third light source unit when t2a>t1a and t2b>t1b.

[0009] Furthermore, an illumination device according to one aspect of the present disclosure comprises an illumination control device and a first light source unit, a second light source unit, a third light source unit, and a fourth light source unit that irradiate light to different areas on the surface to be illuminated.

[0010] In addition, a lighting control method according to one aspect of the present disclosure includes outputting control signals for controlling each of a first light source unit, a second light source unit, a third light source unit, and a fourth light source unit. The control signals are dynamic signals such that the output of the light emitted by each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit repeats increases and decreases. Let the maximum value of the output value in the control signal output to the first light source unit or the output of the light emitted by the first light source unit be P1a, and the maximum value closest in time from the maximum value P1a and the maximum value of the output value in the control signal output to the second light source unit or the output of the light emitted by the second light source unit be P2a. In the control signal output to the first light source unit or the output of the light emitted by the first light source unit, let the maximum value closest in time from the maximum value P1a be P3a. Let the time difference between the time point of the maximum value P1a and the time point of the maximum value P2a be t1a, and the time difference between the time point of the maximum value P2a and the time point of the maximum value P3a be t2a. Let the maximum value of the output value in the control signal output to the third light source unit or the output of the light emitted by the third light source unit be P1b, and the maximum value closest in time from the maximum value P1b and the maximum value of the output value in the control signal output to the fourth light source unit or the output of the light emitted by the fourth light source unit be P2b. In the control signal output to the third light source unit or the output of the light emitted by the third light source unit, let the maximum value closest in time from the maximum value P1b be P3b. Let the time difference between the time point of the maximum value P1b and the time point of the maximum value P2b be t1b, and the time difference between the time point of the maximum value P2b and the time point of the maximum value P3b be t2b. When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along one side to the other side of the passage, when t2a > t1a and t2b > t1b, output light from the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit so as to satisfy t1a < t1b, or when t2a > t1a and t2b > t1b, output the control signal that satisfies t1a < t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit.

[0011] Furthermore, an illumination control method according to one aspect of the present disclosure includes outputting control signals to control each of the first, second, third, and fourth light sources, wherein the control signals are dynamic signals such that the output of light emitted by each of the first, second, third, and fourth light sources increases and decreases repeatedly, and the maximum value of the output of the control signal output to the first light source or the output of light emitted by the first light source is defined as P1a, and the output to the second light source is the closest to the maximum value P1a over time. Let P2a be the maximum value of the output of the control signal or the light output emitted by the second light source unit, and let P3a be the maximum value of the control signal or the light output emitted by the first light source unit that is closest to the maximum value P1a over time, let t1a be the time difference between the time of the maximum value P1a and the time of the maximum value P2a, and let t2a be the time difference between the time of the maximum value P2a and the time of the maximum value P3a, and let P3a be the maximum value of the control signal or the light output emitted by the third light source unit that is output Let P1b be the maximum value, P2b be the maximum value of the control signal output to the fourth light source unit or the output of light emitted by the fourth light source unit that is closest to the maximum value P1b over time, P3b be the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit that is closest to the maximum value P1b over time, t1b be the time difference between the time of the maximum value P1b and the time of the maximum value P2b, and t2b be the time difference between the time of the maximum value P2b and the time of the maximum value P3b, then the When the first light source, the second light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, if t2a > t1a and t2b > t1b, the first light source, the second light source, the third light source, and the fourth light source output light such that t1a > t1b, or if t2a > t1a and t2b > t1b, the control signals that satisfy t1a > t1b are output to each of the first light source, the second light source, the third light source, and the fourth light source. [Effects of the Invention]

[0012] According to the lighting control device etc. of this disclosure, it is possible to enhance the attractiveness and guidance to people with light. [Brief explanation of the drawing]

[0013] [Figure 1] Figure 1 is a block diagram showing a lighting system according to an embodiment. [Figure 2] Figure 2 is a schematic diagram showing a lighting system installed in a passageway. [Figure 3A] Figure 3A is a diagram showing the control signal. [Figure 3B] Figure 3B is another diagram showing the control signal. [Figure 4] Figure 4 shows the case where multiple lighting devices each irradiate a surface with light, and the light irradiated onto the surface transitions in a linear fashion. [Figure 5] Figure 5 shows the case where, when multiple lighting devices each irradiate a surface with light, the light irradiated onto the surface transitions in a planar manner. [Figure 6] Figure 6 shows how the light irradiated onto the surface transitions linearly when each of the multiple lighting devices irradiates the surface with light when there are three sets of devices. [Figure 7] Figure 7 shows the control signals in other modified examples. [Figure 8] Figure 8 shows the relationship between transition time and the arrangement of the first set and the arrangement of the second set in other modified examples. [Modes for carrying out the invention]

[0014] 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.

[0015] The figures are schematic diagrams and are not necessarily drawn to scale precisely. Therefore, for example, the scales etc. in each figure do not necessarily match. Also, in each figure, the same reference numerals are assigned to substantially identical components, and duplicate explanations are omitted or simplified.

[0016] (Embodiment) <Configuration and Function> The lighting system 1 according to the following embodiment will be described with reference to FIGS. 1 to 5.

[0017] FIG. 1 is a block diagram showing the lighting system 1 according to Embodiment 1. FIG. 2 is a schematic diagram showing the case where each of a plurality of lighting devices 10 irradiates light onto an irradiated surface. FIG. 3A is a diagram showing a control signal. FIG. 3B is another diagram showing a control signal. FIG. 4 is a diagram showing the case where the light irradiated onto the irradiated surface transitions linearly when each of a plurality of lighting devices 10 irradiates light onto the irradiated surface. FIG. 5 is a diagram showing the case where the light irradiated onto the irradiated surface transitions in a planar manner when each of a plurality of lighting devices 10 irradiates light onto the irradiated surface.

[0018] As shown in FIG. 1, the lighting system 1 is an affordance lighting system that can guide people 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 people 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 there is a savannah effect that people are guided to brighter places rather than darker places in terms of vertical plane illuminance. Therefore, in the lighting system 1, since it irradiates the ground, strictly speaking, it is different from the savannah effect related to vertical plane illuminance, but by aiming for an effect similar to this savannah effect and changing the light from bright to dark, and by acting on people's emotions by this effect, people can be guided.

[0019] Such a lighting system 1 is used in places where it is necessary to guide a large number of people, such as parks, amusement parks, stations, large-scale facilities, etc.

[0020] 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.

[0021] [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. Figure 2 shows six lighting devices 10 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, a second light source unit, a third light source unit, and a fourth light source unit.

[0022] 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 emit various colors of light 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, a second light source unit, a third light source unit, and a fourth light source unit.

[0023] 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.

[0024] 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.

[0025] 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.

[0026] Furthermore, the lighting device 10 may change the color of the emitted light by changing the wavelength of the emitted light as part of the lighting effect.

[0027] 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.

[0028] 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.

[0029] 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.

[0030] [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.

[0031] The lighting control device 2 includes a control unit 20 that outputs control signals to each of the multiple lighting devices 10.

[0032] Here, the control signal is a dynamic signal that causes the light output of each of the multiple lighting devices 10 to repeatedly increase or decrease, as shown in Figures 3A and 3B. Therefore, each of the multiple lighting devices 10 emits light such that the luminous intensity or illuminance dynamically increases or decreases repeatedly in response to the control signal.

[0033] Furthermore, the control signal may be a dynamic output signal consisting of a waveform signal that increases only once per cycle and a waveform signal that decreases only once per cycle. Alternatively, 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] The control unit 20 outputs control signals to each of the multiple lighting devices 10 that emit light, so that light is irradiated to different areas on the surface of the passageway.

[0036] Specifically, when the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d among the plurality of lighting devices 10 are arranged in this order along one side to the other side of the passage, when t2a > t1a and t2b > t1b, the control unit 20 outputs light from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d so as to satisfy t1a ≠ t1b (t1a > t1b or t1a < t1b), or the control unit 20 outputs a control signal that satisfies t1a ≠ t1b (t1a > t1b or t1a < t1b) to each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d when t2a > t1a and t2b > t1b. At this time, let the maximum value of the output value in the output of the control signal output to the first lighting device 10a or the light emitted by the first lighting device 10a be P1a. Also, let the maximum value of the output value in the output of the control signal output to the second lighting device 10b or the light emitted by the second lighting device 10b, which is closest to P1a over time, be P2a. Also, in the output of the control signal output to the first lighting device 10a or the light emitted by the first lighting device 10a, let the maximum value closest to P1a over time be P3a. Also, let the time difference between the time point of the maximum value P1a and the time point of the maximum value P2a be t1a. Also, let the time difference between the time point of the maximum value P2a and the time point of the maximum value P3a be t2a. Also, let the maximum value of the output value in the output of the control signal output to the third lighting device 10c or the light emitted by the third lighting device 10c be P1b. Also, let the maximum value of the output value in the output of the control signal output to the fourth lighting device 10d or the light emitted by the fourth lighting device 10d, which is closest to P1b over time, be P2b. Also, in the output of the control signal output to the third lighting device 10c or the light emitted by the third lighting device 10c, let the maximum value closest to P1b over time be P3b. Also, let the time difference between the time point of the maximum value P1b and the time point of the maximum value P2b be t1b. Also, let the time difference between the time point of the maximum value P2b and the time point of the maximum value P3b be t2b. Note that the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d are examples of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit.Furthermore, the lighting device 10 is a general term that includes the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d. Also, the light output includes the luminous intensity of the light emitted by the lighting device 10, or the illuminance of the light emitted by the lighting device 10.

[0037] Furthermore, as shown in Figure 4, let da be the distance between the points of maximum horizontal illuminance on the illuminated surface irradiated by the first illumination device 10a and the second illumination device 10b, respectively, and let db be the distance between the points of maximum horizontal illuminance on the illuminated surface irradiated by the third illumination device 10c and the fourth illumination device 10d, respectively. In this case, when t2a > t1a and t2b > t1b, the control unit 20 outputs light from the first illumination device 10a, the second illumination device 10b, the third illumination device 10c, and the fourth illumination device 10d such that da / t1a > db / t1b is satisfied. Alternatively, when t2a > t1a and t2b > t1b, the control unit 20 outputs control signals that satisfy da / t1a > db / t1b to each of the first illumination device 10a, the second illumination device 10b, the third illumination device 10c, and the fourth illumination device 10d.

[0038] When the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d, which are included in the multiple lighting devices 10, are arranged in this order along a passage from one side to the other, the minimum value of the time difference t1a for the first set including the first lighting device 10a and the second lighting device 10b is smaller than the minimum value of the time difference t1b for the second set including the third lighting device 10c and the fourth lighting device 10d. Or, the average value of the time difference t1a for the first set including the first lighting device 10a and the second lighting device 10b is smaller than the average value of the time difference t1b for the second set including the third lighting device 10c and the fourth lighting device 10d. In other words, the phase difference of the control signals is smaller for the first set of the first lighting device 10a and the second lighting device 10b, which are arranged on one side, than for the second set of the third lighting device 10c and the fourth lighting device 10d.

[0039] Furthermore, the phases of the control signals output to the first lighting device 10a and the second lighting device 10b are different. Similarly, the phases of the control signals output to the third lighting device 10c and the fourth lighting device 10d are different. Specifically, the control unit 20 transmits control signals with different phases to the first lighting device 10a and the second lighting device 10b, and transmits control signals with different phases to the third lighting device 10c and the fourth lighting device 10d. In other words, as shown in Figures 3A and 3B(a), the control unit 20 transmits control signals with different phases, as shown by the solid and dashed lines, to the first lighting device 10a and the second lighting device 10b. Also, as shown in Figures 3A and 3B(b), the control unit 20 transmits control signals with different phases, as shown by the solid and dashed lines in Figures 3A and 3B, to the third lighting device 10c and the fourth lighting device 10d. As a result, the phases of the output waveform of light emitted by the first lighting device 10a and the output waveform of light emitted by the second lighting device 10b are different. Also, the phases of the output waveform of light emitted by the third lighting device 10c and the output waveform of light emitted by the fourth lighting device 10d are different. Therefore, the transition speeds between two adjacent lighting devices 10 among the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d can be made different.

[0040] Furthermore, the periods of the control signals output to the first lighting device 10a and the second lighting device 10b may be different from the periods of the control signals output to the third lighting device 10c and the fourth lighting device 10d. In other words, the frequencies of the control signals of two or more lighting devices 10 located on one side may be different from those of two or more lighting devices 10 located on the other side.

[0041] Furthermore, the periods of the control signals output to the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d may be the same. In other words, the control signals may simply be output to each of the multiple lighting devices 10 with different phases.

[0042] Furthermore, when light emitted from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d 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, in the lighting system 1, each of the multiple lighting devices 10 emits light to create the effect that the light shone onto the surface to be illuminated moves continuously in a linear, curved, sawtooth, planar, L-shaped, or diagonal pattern.

[0043] Here, the linear transition of light irradiated onto the illuminated surface will be explained using Figure 4. Figure 4 illustrates a case where, in a group of six lighting devices 10 arranged along a passageway, the phase difference of the control signals output to three lighting devices 10 located on one side is reduced, and the phase difference of the control signals output to three lighting devices 10 located on the other side is increased. In Figure 4, three lighting devices 10 are shown on one side and three on the other side as an example, but it is sufficient to have two or more lighting devices 10 on each side, and the embodiment is not limited to this example.

[0044] 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.

[0045] For example, in the first stage of Figure 4, in the three lighting devices 10 arranged on one side, light-illuminated area A1 has the brightest 1st illuminance, light-illuminated area A2 has the third brightest 3rd illuminance, and light-illuminated area A3 has the second brightest 2nd illuminance.

[0046] At this time, in the three lighting devices 10 located on the other side, light-illuminated area A4 has the second brightest illuminance (second illuminance), light-illuminated area A5 has the brightest illuminance (first illuminance), and light-illuminated area A6 has the third brightest illuminance (third illuminance).

[0047] Next, in the second stage, in the three lighting devices 10 arranged on one side, the light-illuminated area A1 becomes the second brightest (second illuminance), the light-illuminated area A2 becomes the brightest (first illuminance), and the light-illuminated area A3 becomes the third brightest (third illuminance).

[0048] At this time, in the three lighting devices 10 located on the other side, the light-illuminated area A4 remains at the second brightest illuminance (second illuminance), the light-illuminated area A5 remains at the brightest illuminance (first illuminance), and the light-illuminated area A6 remains at the third brightest illuminance (third illuminance).

[0049] Next, in the third stage, in the three lighting devices 10 arranged on one side, the light-illuminated area A1 becomes the third brightest (3rd illuminance), the light-illuminated area A2 becomes the second brightest (2nd illuminance), and the light-illuminated area A3 becomes the first brightest (1st illuminance).

[0050] At this time, in the three lighting devices 10 located on the other side, light-illuminated area A4 will have the third brightest illuminance (3rd illuminance), light-illuminated area A5 will have the second brightest illuminance (2nd illuminance), and light-illuminated area A6 will have the brightest illuminance (1st illuminance).

[0051] Thus, in the case of three lighting devices 10 arranged on one side, the phase difference between two adjacent lighting devices 10 is smaller than in the case of three lighting devices 10 arranged on the other side, so the speed of light transition appears faster. Conversely, in the case of three lighting devices 10 arranged on the other side, the phase difference between two adjacent lighting devices 10 is larger, so the speed of light transition appears slower. Furthermore, in the light-illuminated areas A1-A3 or A4-A6, the speed at which light transitions linearly may be similar to the speed at which a person walks (a speed of several kilometers per hour).

[0052] Furthermore, the period in the light-illuminated areas A1 to A3 of the light emitted by the 1st to 3rd lighting devices 10 is the same as the period in the light-illuminated areas A4 to A6 of the light emitted by the 4th to 6th lighting devices 10. In other words, the period of the control signal in the first set or the period of the light output from the 1st to 3rd lighting devices 10 has the same relationship to the period of the control signal in the second set or the period of the light output from the 4th to 6th lighting devices 10. Therefore, it is possible to match the transition of light at a given point in time or to make it change smoothly over time.

[0053] 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.

[0054] Furthermore, the way in which light irradiated onto the surface transitions in a planar manner will be explained using Figure 5.

[0055] From one side, the first lighting device 10 illuminates light-irradiated areas A1 to F1. The second lighting device 10 illuminates light-irradiated areas A2 to F2. The same applies to the third and subsequent lighting devices 10. In this case, each lighting device 10 is equipped with multiple light sources 11.

[0056] For example, in Figure 5, the light irradiation regions A1 to A6 are arranged in this order from one side to the other. The same applies to the other light irradiation regions B1 to B6 and C1 to C6. Also, the first light irradiation regions A1, B1, C1, D1, E1, and F1 are arranged vertically in this order. The same applies to the other light irradiation regions A2 to A6, B2 to B6, C2 to C6, D2 to D6, E2 to E6, and F2 to F6.

[0057] For example, in Figure 5, in the first stage, from the six lighting devices 10, light-irradiated areas A1 to F1 are illuminated at the brightest level (first illuminance), light-irradiated areas A2 to F2 are illuminated at the third brightest level (third illuminance), and light-irradiated areas A3 to F3 are illuminated at the second brightest level (second illuminance).

[0058] Additionally, light-illuminated areas A4-F4 have the second brightest illumination level (2nd illuminance), light-illuminated areas A5-F5 have the brightest illumination level (1st illuminance), and light-illuminated areas A6-F6 have the third brightest illumination level (3rd illuminance).

[0059] Next, in the second stage, from the six lighting devices 10, light-irradiated areas A1 to F1 are at the second brightest illuminance (second illuminance), light-irradiated areas A2 to F2 are at the brightest illuminance (first illuminance), and light-irradiated areas A3 to F3 are at the third brightest illuminance (third illuminance).

[0060] Furthermore, the illumination areas A4-F4 remain at the second brightest illuminance (second illuminance), A5-F5 at the brightest illuminance (first illuminance), and A6-F6 at the third brightest illuminance (third illuminance).

[0061] Even when the light irradiated onto the surface transitions in a planar manner, as shown in the figure, 5 As shown, the light shining on the surface to be illuminated comes from one side to the other. beside Since it is a transition, a detailed explanation will be omitted. Note that when the light irradiated onto the surface transitions in a planar manner, the light irradiated onto the surface vertical You may transition in that direction.

[0062] Furthermore, the examples in Figure 5 are not the only ones; 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.

[0063] 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.

[0064] [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.

[0065] [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.

[0066] 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.

[0067] <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.

[0068] 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, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d, respectively. The control signals are dynamic signals that cause the output of light emitted by the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d to repeatedly increase or decrease. Furthermore, the maximum value of the control signal output to the first lighting device 10a or the output of light emitted by the first lighting device 10a is defined as P1a, and the maximum value of the control signal output to the second lighting device 10b or the output of light emitted by the second lighting device 10b that is closest to the maximum value P1a over time is defined as P2a, and the maximum value of the control signal output to the first lighting device 10a or the output of light emitted by the first lighting device 10a that is closest to the maximum value P1a over time is defined as P Let 3a be the time difference between the time of maximum value P1a and the time of maximum value P2a be t1a, and let t2a be the time difference between the time of maximum value P2a and the time of maximum value P3a be P1b be the maximum value of the control signal output to the third lighting device 10c or the output of light emitted by the third lighting device 10c be P1b be the maximum value of the control signal output to the fourth lighting device 10d or the output of light emitted by the fourth lighting device 10d that is closest to the maximum value P1b over time, In the control signal output to the third lighting device 10c or the output of light emitted by the third lighting device 10c, if P3b is the maximum value closest to the maximum value P1b over time, if t1b is the time difference between the time of maximum value P1b and the time of maximum value P2b, and if t2b is the time difference between the time of maximum value P2b and the time of maximum value P3b, then the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along the passage from one side to the other. When they are arranged such that t2a > t1a and t2b > t1b, the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d output light such that t1a ≠ t1b, or the control unit 20 outputs a control signal to each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d such that t1a ≠ t1b.

[0069] According to this, each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d emits dynamic light that periodically repeats increases and decreases so that the output of light such as luminous intensity or illuminance changes based on a control signal. For this reason, by irradiating the irradiated surface with light in which the increase and decrease of the light brightness are periodically repeated, the brightness of the passage can be made non-uniform, so that people tend to pay attention to bright light.

[0070] Also, when t2a > t1a and t2b > t1b, for example, if t1a < t1b, the phase difference between two adjacent lighting devices 10 (the first lighting device 10a and the second lighting device 10b) arranged on one side becomes smaller than that on the other side, and two adjacent lighting devices 10 (the third lighting device 10c and the fourth lighting device 10d) arranged on the other side have a larger phase difference than that on one side. Also, when t2a > t1a and t2b > t1b, for example, if tb > ta, the phase difference between two adjacent lighting devices 10 (the first lighting device 10a and the second lighting device 10b) arranged on the other side becomes smaller than that on one side, and two adjacent lighting devices 10 (the third lighting device 10c and the fourth lighting device 10d) arranged on one side have a larger phase difference than that on the other side. At this time, in each light irradiation area irradiated on the irradiated surface in the passage, the transition speed due to the light emitted by the plurality of lighting devices 10 arranged on one side or the other side appears to be fast, and the transition speed due to the light emitted by the plurality of lighting devices 10 arranged on the other side or one side appears to be slow. When one side is in front of a person, the person's consciousness to try to move in response to this change works.

[0071] Therefore, according to this lighting control device 2, the attractiveness and guidance to people by light can be enhanced. As a result, this lighting control device 2 can realize affordance lighting.

[0072] In particular, with this lighting system 1, by providing the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d, there is no need to install a drive mechanism in the lighting device 10 to change the direction of the light emitted by the lighting device 10 itself. Therefore, the increase in manufacturing costs of the lighting system 1 can be suppressed. In addition, since there is no drive mechanism, there is no need to supply power to the drive mechanism. Furthermore, since there is no drive mechanism, the increase in the frequency of maintenance of the lighting system 1 can also be suppressed. As a result, the increase in manufacturing costs of the lighting system 1 can be suppressed.

[0073] The lighting control method of the present embodiment also includes outputting control signals for controlling the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d respectively. Further, the control signals are dynamic signals such that the output of the light emitted by each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d repeats increases and decreases. Also, the maximum value of the output value in the control signal output to the first lighting device 10a or the light output by the first lighting device 10a is set as P1a, the maximum value of the output value in the control signal output to the second lighting device 10b or the light output by the second lighting device 10b that is closest in time from the maximum value P1a is set as P2a, in the control signal output to the first lighting device 10a or the light output by the first lighting device 10a, the maximum value closest in time from the maximum value P1a is set as P3a, the time difference between the time point of the maximum value P1a and the time point of the maximum value P2a is set as t1a, the time difference between the time point of the maximum value P2a and the time point of the maximum value P3a is set as t2a, the maximum value of the output value in the control signal output to the third lighting device 10c or the light output by the third lighting device 10c is set as P1b, the maximum value of the output value in the control signal output to the fourth lighting device 10d or the light output by the fourth lighting device 10d that is closest in time from the maximum value P1b is set as P2b, in the control signal output to the third lighting device 10c or the light output by the third lighting device 10c, the maximum value closest in time from the maximum value P1b is set as P3b, the time difference between the time point of the maximum value P1b and the time point of the maximum value P2b is set as t1b, and the time difference between the time point of the maximum value P2b and the time point of the maximum value P3b is set as t2b. When the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along one side to the other side of the passage, when t2a > t1a and t2b > t1b, light is output from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d so as to satisfy t1a < t1b, or when t2a > t1a and t2b > t1b, a control signal that satisfies t1a < t1b is output to each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d.

[0074] This lighting control method also produces the same effects as described above.

[0075] Furthermore, the lighting control method of this embodiment includes outputting control signals to control the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d, respectively. The control signals are dynamic signals that cause the output of light emitted by each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d to repeatedly increase or decrease. Furthermore, let P1a be the maximum value of the control signal output to the first lighting device 10a or the light output emitted by the first lighting device 10a, and let P2a be the maximum value of the control signal output to the second lighting device 10b or the light output emitted by the second lighting device 10b that is closest to the maximum value P1a over time, and let P3a be the maximum value of the control signal output to the first lighting device 10a or the light output emitted by the first lighting device 10a that is closest to the maximum value P1a over time, and let t1a be the time difference between the time of the maximum value P1a and the time of the maximum value P2a, and let t2a be the time difference between the time of the maximum value P2a and the time of the maximum value P3a, and let P1b be the maximum value of the control signal output to the third lighting device 10c or the light output emitted by the third lighting device 10c, and let P2 be the maximum value of the control signal output to the fourth lighting device 10d or the light output emitted by the fourth lighting device 10d that is closest to the maximum value P1b over time, and Let b be the control signal output to the third lighting device 10c or the output of light emitted by the third lighting device 10c, and let P3b be the maximum value closest to the maximum value P1b over time, let t1b be the time difference between the time of the maximum value P1b and the time of the maximum value P2b, and let t2b be the time difference between the time of the maximum value P2b and the time of the maximum value P3b. Then, the first lighting device 10a, the second lighting device 10b, the third lighting device 10c and the fourth lighting device 10d move along the passage from one side to the other. When the lights are arranged in the order shown, if t2a>t1a and t2b>t1b, the first lighting device 10a, second lighting device 10b, third lighting device 10c, and fourth lighting device 10d output light such that t1a>t1b, or if t2a>t1a and t2b>t1b, control signals that satisfy t1a>t1b are output to each of the first lighting device 10a, second lighting device 10b, third lighting device 10c, and fourth lighting device 10d.

[0076] This lighting control method also has the same operational effects as described above.

[0077] Also, in the lighting device 10 of the present embodiment, when the distance between the maximum horizontal-plane illuminance points on the irradiated surface irradiated with light by each of the first lighting device 10a and the second lighting device 10b is da, and the distance between the maximum horizontal-plane illuminance points on the irradiated surface irradiated with light by each of the third lighting device 10c and the fourth lighting device 10d is db, the control unit 20 outputs light from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d so as to satisfy da / t1a > db / t1b when t2a > t1a and t2b > t1b, or outputs a control signal that satisfies da / t1a > db / t1b to each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d when t2a > t1a and t2b > t1b.

[0078] According to this, the attractiveness and guidance to people by light can be further enhanced.

[0079] Also, in the lighting device 10 of the present embodiment, when the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along one side to the other side of the passage, the control unit 20 outputs light from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d so as to satisfy t1a < t1b when t2a > t1a and t2b > t1b, or outputs a control signal that satisfies t1a < t1b to each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d when t2a > t1a and t2b > t1b.

[0080] According to this, when t2a > t1a and t2b > t1b, for example, if t1a < t1b, the phase difference between two adjacent lighting devices 10 (the first lighting device 10a and the second lighting device 10b) arranged on one side is smaller than that on the other side, and the phase difference between two adjacent lighting devices 10 (the third lighting device 10c and the fourth lighting device 10d) arranged on the other side is larger than that on one side. At this time, in each light irradiation area irradiated on the irradiated surface in the passage, the transition speed due to the light emitted by the plurality of lighting devices 10 arranged on one side is fast, and the transition speed due to the light emitted by the plurality of lighting devices 10 arranged on the other side seems slow. When one side is in front of a person, the person's awareness of trying to move in response to this change works.

[0081] Further, in the lighting device 10 of the present embodiment, when the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along one side to the other side of the passage, when t2a > t1a and t2b > t1b, the control unit 20 outputs light from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d so as to satisfy t1a > t1b, or, when t2a > t1a and t2b > t1b, the control unit 20 outputs a control signal satisfying t1a > t1b to each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d.

[0082] According to this, when t2a > t1a and t2b > t1b, for example, if t1a > t1b, the phase difference between two adjacent lighting devices 10 (the first lighting device 10a and the second lighting device 10b) arranged on the other side is smaller than that on one side, and the phase difference between two adjacent lighting devices 10 (the third lighting device 10c and the fourth lighting device 10d) arranged on one side is larger than that on the other side. At this time, in each light irradiation area irradiated on the irradiated surface in the passage, the transition speed due to the light emitted by the plurality of lighting devices 10 arranged on the other side is fast, and the transition speed due to the light emitted by the plurality of lighting devices 10 arranged on one side seems slow. When one side is in front of a person, the person's awareness of trying to move in response to this change works.

[0083] Furthermore, in the lighting device 10 of this embodiment, the minimum value of the time difference t1a of the first set including the first lighting device 10a and the second lighting device 10b is smaller than the minimum value of the time difference t1b of the second set including the third lighting device 10c and the fourth lighting device 10d, or the average value of the time difference t1a of the first set including the first lighting device 10a and the second lighting device 10b is smaller than the average value of the time difference t1b of the second set including the third lighting device 10c and the fourth lighting device 10d.

[0084] According to this, in the control signal, the minimum or average value of the time difference t1a is smaller than the minimum or average value of the time difference t1b. Therefore, in the multiple lighting devices 10 arranged on one side and the other side, the transition of light illuminating the surface appears smooth at any timing. As a result, the appearance of the light illuminating the surface is less likely to deteriorate, and thus the light can be used to guide people.

[0085] Furthermore, in the lighting control device of this embodiment, the period of the control signal in the first set or the period of the light output from the first lighting device 10a, second lighting device 10b, third lighting device 10c and fourth lighting device 10d has the same relationship as the period of the control signal in the second set or the period of the light output from the first lighting device 10a, second lighting device 10b, third lighting device 10c and fourth lighting device 10d.

[0086] For example, if the periods in the first set and the second set are not identical, the transitions in the light-illuminated area when light emitted from the first set illuminates the surface and the transitions in the light-illuminated area when light emitted from the second set illuminates the surface will be sparse, which may cause discomfort to people. However, in this embodiment, by making the periods in the first set and the second set identical, the light transitions regularly, making it possible to match the frequency of light appearance in the light-illuminated area. Therefore, it is possible to guide people with light.

[0087] Furthermore, it is possible to make a person perceive the difference between the transition speed of the light-irradiated area when the light emitted from the first group illuminates the surface and the transition speed of the light-irradiated area when the light emitted from the second group illuminates the surface.

[0088] 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. Also, the phases of the control signals output to the third lighting device 10c and the fourth lighting device 10d are different.

[0089] According to this, each of the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d emits dynamic light that increases and decreases at different periods, so that the light output changes based on the control signal. As a result, the light appears to transition on the illuminated surface, allowing people to perceive a flow of light.

[0090] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d is irradiated onto the surface to be illuminated, the light irradiated onto the surface to be illuminated transitions in a linear fashion.

[0091] 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.

[0092] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d is irradiated onto the surface to be illuminated, the light irradiated onto the surface transitions in a curved manner.

[0093] 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.

[0094] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d is irradiated onto the surface to be illuminated, the light irradiated onto the surface transitions in a sawtooth pattern.

[0095] 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.

[0096] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d is irradiated onto the surface to be illuminated, the light irradiated onto the surface to be illuminated transitions in a planar manner.

[0097] 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.

[0098] Furthermore, in the lighting control device 2 of this embodiment, when light emitted from the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d is irradiated onto the surface to be illuminated, the light irradiated onto the surface transitions in an L-shape.

[0099] 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.

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

[0101] 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.

[0102] (Modified example of the embodiment) In this modified example, the lighting control device 2, lighting device 10, and lighting control method differ from the lighting control device, lighting device, and lighting control method of the embodiment in that the third set is positioned between the first set and the second set. The configuration and functions of the lighting control device 2, lighting device 10, and lighting control method of this modified example are the same as those of the lighting control device, lighting device, and lighting control method of the embodiment, and the same reference numerals are used for those configurations and functions, and a detailed explanation of the configuration and functions is omitted.

[0103] The lighting control device 2, lighting device 10, and lighting control method related to this modified example will be explained using Figures 6 to 8. Figure 6 shows how the light irradiated onto the surface transitions linearly when each of the multiple lighting devices 10 irradiates the surface with light when there are three sets of devices. Figure 7 shows the control signal in another modified example. Figure 8 shows the relationship between the transition time and the arrangement of the first set and the arrangement of the second set in another modified example.

[0104] In this modified example, as shown in Figure 6, a first set including a first lighting device 10a and a second lighting device 10b, a third set including a fifth lighting device 10e and a sixth lighting device 10f, and a second set including a third lighting device 10c and a fourth lighting device 10d may be arranged in this order along the passage from one side to the other. In other words, a third set may be provided between the first set and the second set. To put it another way, a third set including a fifth lighting device 10e and a sixth lighting device 10f may be provided to complement the space between the first set and the second set.

[0105] Here, the fifth lighting device 10e and the sixth lighting device 10f are examples of the fifth and sixth light source units. The light source 11 may also be an example of the fifth and sixth light source units. Furthermore, lighting device 10 is a general term that further includes the fifth lighting device 10e and the sixth lighting device 10f.

[0106] For example, in Figure 6, in the first stage, light-irradiated areas A1, A3, and A5 become the brightest (first illuminance), and light-irradiated areas A2, A4, and A6 become the second brightest (second illuminance).

[0107] In the second stage, light-irradiated area A1 becomes the second brightest (2nd illuminance), and light-irradiated area A2 becomes the brightest (1st illuminance).

[0108] However, light-illuminated areas A3 and A5 remain at the brightest (first illuminance), while light-illuminated areas A4 and A6 remain at the second brightest (second illuminance).

[0109] In the third stage, light-irradiated area A1 becomes the brightest (first illuminance), and light-irradiated area A2 becomes the second brightest (second illuminance).

[0110] Additionally, light-illuminated area A3 will have the second brightest illumination level (2nd illuminance), and light-illuminated area A4 will have the brightest illumination level (1st illuminance).

[0111] However, light-illuminated area A5 remains at the brightest (first illuminance), and light-illuminated area A6 remains at the second brightest (second illuminance).

[0112] Then, in the fourth stage, light-irradiated areas A1, A3, and A5 become the second brightest (second illuminance), while light-irradiated areas A2, A4, and A6 become the brightest (first illuminance).

[0113] Thus, the transition rate (and time difference) in the first group, the transition rate in the third group, and the transition rate in the second group have the same relationship. Therefore, since the light transitions regularly, the frequency of light appearance in the light-irradiated region can be made consistent.

[0114] In such a lighting control device of this modified example, the control unit 20 further outputs a control signal for controlling the fifth lighting device 10e and the sixth lighting device 10f. The control signal is a dynamic signal such that the output of the light emitted by the fifth lighting device 10e and the sixth lighting device 10f repeats increasing and decreasing. When the first lighting device 10a, the second lighting device 10b, the fifth lighting device 10e, the sixth lighting device 10f, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along one side to the other side of the passage, the transition speed between two adjacent light irradiation regions irradiated with the light emitted from two adjacent light source units on the irradiated surface gradually decreases from one side to the other side. More specifically, as shown in FIG. 7, let the maximum value of the output value in the control signal output to the fifth lighting device 10e or the output of the light emitted by the fifth lighting device 10e be P1c. Also, let the maximum value of the output value in the control signal output to the sixth lighting device 10f or the output of the light emitted by the sixth lighting device 10f, which is closest to P1c over time, be P2c. Also, in the control signal output to the fifth lighting device 10e or the output of the light emitted by the fifth lighting device 10e, let the maximum value closest to P1c over time be P3c. Also, let the time difference between the time point of the maximum value P1c and the time point of the maximum value P2c be t1c. Also, let the time difference between the time point of the maximum value P2c and the time point of the maximum value P3c be t2c. At this time, when the first lighting device 10a, the second lighting device 10b, the fifth lighting device 10e, the sixth lighting device 10f, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along one side to the other side of the passage, the control unit 20 may output a control signal that satisfies t1a < t1c < t1b when t2a > t1a, t2c > t1c, and t2b > t1b to each of the first lighting device 10a, the second lighting device 10b, the fifth lighting device 10e, the sixth lighting device 10f, the third lighting device 10c, and the fourth lighting device 10d. Further, if the time difference between the maximum value P2a and the maximum value P1c is t1d, and the time difference between the maximum value P2c and the maximum value P1b is t1e, a control signal that satisfies t1a < t1d < t1c < t1e < t1b may be output to these lighting devices 10.According to this, as shown in Figure 8, a third set including the fifth illumination device 10e and the sixth illumination device 10f can be arranged to complement the transition speed which is intermediate between the transition speed of the first set and the transition speed of the second set. As a result, the overall transition speed of the light-illuminated region irradiated by the light emitted from the first illumination device 10a, the second illumination device 10b, the fifth illumination device 10e, the sixth illumination device 10f, the third illumination device 10c, and the fourth illumination device 10d appears to gradually change. In other words, the transition speed between two adjacent light-illuminated regions irradiated by light emitted from two adjacent light sources appears to gradually decrease from one side to the other.

[0115] (Other variations, etc.) Although the present disclosure has been described above based on embodiments, the present disclosure is not limited to these embodiments.

[0116] For example, in this embodiment, the lighting device 10 may include a lighting control device 2 and a first lighting device 10a, a second lighting device 10b, a third lighting device 10c, and a fourth lighting device 10d that can emit light toward the surface to be illuminated. In this case, the light source may be a light source 11 having LED elements mounted on the lighting device 10. Furthermore, the lighting device 10 may be configured as a lighting system 1 by providing multiple devices in a passageway.

[0117] Furthermore, in the lighting control device 2 of this embodiment, the control unit 20 further outputs a control signal to control the fifth lighting device 10e and the sixth lighting device 10f. The control signal is a dynamic signal that causes the output of light emitted by the fifth lighting device 10e and the sixth lighting device 10f to repeatedly increase and decrease. When the first lighting device 10a, the second lighting device 10b, the fifth lighting device 10e, the sixth lighting device 10f, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along a passage from one side to the other, the transition speed between two adjacent light-illuminated areas where light emitted from two adjacent lighting devices 10 irradiates the surface to be illuminated may gradually increase from one side to the other. In this case, the transition speed between two adjacent light-illuminated areas where light emitted from two adjacent light sources irradiates the surface to be illuminated appears to gradually increase from one side to the other.

[0118] Furthermore, in the lighting control device 2 of this embodiment, the control unit 20 further outputs a control signal to control the fifth lighting device 10e and the sixth lighting device 10f. The control signal is a dynamic signal that causes the output of light emitted by the fifth lighting device 10e and the sixth lighting device 10f to repeatedly increase and decrease. When the first lighting device 10a, the second lighting device 10b, the fifth lighting device 10e, the sixth lighting device 10f, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along a passage from one side to the other, the phase difference of the light output in two adjacent light-illuminated areas where light emitted from two adjacent lighting devices 10 irradiates the surface to be illuminated may gradually increase from one side to the other. In this case, the flow of light between two adjacent light-illuminated areas where light emitted from two adjacent light sources irradiates the surface to be illuminated appears to gradually decrease from one side to the other.

[0119] Furthermore, in the lighting control device 2 of this embodiment, the control unit 20 further outputs a control signal to control the fifth lighting device 10e and the sixth lighting device 10f. The control signal is a dynamic signal that causes the output of light emitted by the fifth lighting device 10e and the sixth lighting device 10f to repeatedly increase and decrease. When the first lighting device 10a, the second lighting device 10b, the fifth lighting device 10e, the sixth lighting device 10f, the third lighting device 10c, and the fourth lighting device 10d are arranged in this order along a passage from one side to the other, the phase difference of the light output in two adjacent light-illuminated areas where light emitted from two adjacent lighting devices 10 irradiates the surface to be illuminated may gradually decrease from one side to the other. In this case, the flow of light between two adjacent light-illuminated areas where light emitted from two adjacent light sources irradiates the surface to be illuminated appears to gradually increase from one side to the other.

[0120] Further, the lighting control device of the present embodiment may include a control unit 20 that outputs control signals for controlling each of the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c. Further, the control signal may be a dynamic signal such that the output of the light emitted by each of the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c repeats increases and decreases. Also, let the maximum value of the output value in the control signal output to the first lighting device 10a or the light output by the first lighting device 10a be P1a, and the maximum value of the output value in the control signal output to the second lighting device 10b or the light output by the second lighting device 10b that is closest to P1a over time be P2a. In the control signal output to the first lighting device 10a or the light output by the first lighting device 10a, let the maximum value closest to P1a over time be P3a. Let the time difference between the time point of the maximum value P1a and the time point of the maximum value P2a be t1a, and the time difference between the time point of the maximum value P2a and the time point of the maximum value P3a be t2a.Let the maximum value of the output value in the control signal output to the third lighting device 10c or the light output by the third lighting device 10c be P1b, and in the control signal output to the third lighting device 10c or the light output by the third lighting device 10c, let the maximum value closest to P1b over time be P3b. Let the time difference between the time point of the maximum value P1b and the time point of the maximum value P2a be t1b, and the time difference between the time point of the maximum value P1b and the time point of the maximum value P3b be t2b. Then, when the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c are arranged side by side in this order along one side of the passage to the other side, when t2a > t1a and t2b > t1b, the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c output light so as to satisfy t1a < t1b, or the control unit 20 may output a control signal that satisfies t1a < t1b to each of the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c when t2a > t1a and t2b > t1b.According to this, even by simply arranging three lighting devices 10, it is possible to make the transition speed between two adjacent light irradiation regions irradiated with the light emitted from each of the first lighting device 10a and the second lighting device 10b different from the transition speed between two adjacent light irradiation regions irradiated with the light emitted from each of the second lighting device 10b and the third lighting device 10c. For this reason, since the brightness of the passage can be made non-uniform, people tend to pay attention to bright light. Further, when the control signals satisfy t2a > t1a and t2b > t1b, by satisfying t1a < t1b, the phase difference between two adjacent lighting devices 10 (the first lighting device 10a and the second lighting device 10b) arranged on one side becomes smaller than that on the other side, and the phase difference between two adjacent lighting devices 10 (the second lighting device 10b and the third lighting device 10c) arranged on the other side becomes larger than that on one side. For this reason, in each light irradiation region irradiated on the irradiated surface in the passage, the transition speed due to the light emitted from the plurality of lighting devices 10 arranged on one side appears to be fast, and the transition speed due to the light emitted from the plurality of lighting devices 10 arranged on the other side appears to be slow. When one side is in front of a person, the person's awareness to move accordingly works. Therefore, according to this lighting control device 2, the attractiveness and guidance to people can be enhanced by light. As a result, this lighting control device 2 can realize affordance lighting.

[0121] Furthermore, the system may include a control unit 20 that outputs control signals for controlling the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c, respectively. The control signals may also be dynamic signals that cause the output of light emitted by the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c to repeatedly increase or decrease. Furthermore, let P1a be the maximum value of the control signal output to the first lighting device 10a or the output of light emitted by the first lighting device 10a, and let P2a be the maximum value of the control signal output to the second lighting device 10b or the output of light emitted by the second lighting device 10b that is closest to the maximum value P1a over time, and let P3a be the maximum value of the control signal output to the first lighting device 10a or the output of light emitted by the first lighting device 10a that is closest to the maximum value P1a over time, and let t1a be the time difference between the time of the maximum value P1a and the time of the maximum value P2a, and let t2a be the time difference between the time of the maximum value P2a and the time of the maximum value P3a, and let P1b be the maximum value of the control signal output to the third lighting device 10c or the output of light emitted by the third lighting device 10c, and the control signal output to the third lighting device 10c or the third In the output of light emitted by the lighting device 10c, if P3b is the maximum value closest over time to the maximum value P1b, t1b is the time difference between the time of the maximum value P1b and the time of the maximum value P2a, and t2b is the time difference between the time of the maximum value P1b and the time of the maximum value P3b, then when the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c are arranged in this order along the passage from one side to the other, and t2a>t1a and t2b>t1b, the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c will output light such that t1a>t1b is satisfied, or the control unit 20 may output a control signal that satisfies t1a>t1b when t2a>t1a and t2b>t1b to each of the first lighting device 10a, the second lighting device 10b, and the third lighting device 10c. According to this, even by simply arranging three lighting devices 10, it is possible to make the transition speed between two adjacent light-illuminated areas on the surface to be illuminated different from the transition speed between two adjacent light-illuminated areas on the surface to be illuminated that are emitted from each of the first lighting device 10a and the second lighting device 10b.Therefore, the brightness of the passageway can be made uneven, causing people to focus on the brighter light. Also, when the control signals satisfy t1a>t1b when t2a>t1a and t2b>t1b, the phase difference between two adjacent lighting devices 10 (first lighting device 10a and second lighting device 10b) located on the other side becomes smaller than on the one side, while the phase difference between two adjacent lighting devices 10 (second lighting device 10b and third lighting device 10c) located on the one side becomes larger than on the other side. Therefore, in each light-illuminated area on the illuminated surface in the passageway, the transition speed due to the light emitted by the multiple lighting devices 10 located on the other side appears faster, while the transition speed due to the light emitted by the multiple lighting devices 10 located on the one side appears slower. If one side is in front of a person, the person will be conscious of moving in response to this change. Therefore, this lighting control device 2 can enhance the attractiveness and guiding effect on people through light. As a result, this lighting control device 2 can realize affordance lighting.

[0122] Furthermore, in this embodiment, the difference between the maximum and minimum values ​​of the control signal output to the first lighting device 10a or the light output emitted by the first lighting device 10a may be 27% or more, and the difference between the maximum and minimum values ​​of the control signal output to the second lighting device 10b or the light output emitted by the second lighting device 10b may also be 27% or more. Thus, in the first lighting device 10a, the difference between the maximum and minimum values ​​of the luminous intensity may be 27% or more, and the difference between the maximum and minimum values ​​of the horizontal illuminance irradiated onto the illuminated surface may also be 27% or more. Similarly, in the second lighting device 10b, the difference between the maximum and minimum values ​​of the luminous intensity may be 27% or more, and the difference between the maximum and minimum values ​​of the horizontal illuminance irradiated onto the illuminated surface may also be 27% or more. This allows for changes in the size and brightness of the light irradiation area of ​​the light irradiated onto the illuminated surface. Therefore, it is possible to create effects that enhance the guideability of people by using the light irradiated onto the illuminated surface.

[0123] Here, a difference of 27% or more may be when the minimum value of the control signal differs by 27% from the maximum value of the control signal, or when the maximum value of the control signal differs by 27% from the minimum value of the control signal. Either can be selectively set as the reference. The same applies to other values.

[0124] 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.

[0125] Although the difference between the maximum and minimum values ​​of the light output is illustrated with examples for the first lighting device 10a and the second lighting device 10b, the same may apply to other lighting devices 10 besides the first lighting device 10a and the second lighting device 10b.

[0126] In this experiment, five lighting devices 10 were placed outdoors at 5m intervals and turned on at night. Control signals for executing the performance described in 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 there was an induction effect. The results showed that an induction effect was observed when the difference between the maximum and minimum values ​​was approximately 31% or more. Approximating these results with a solid line approximation curve, as shown in Figure 5C, it was found that an induction effect was observed when the difference between the maximum and minimum values ​​was 27% or more. Therefore, the aforementioned threshold of 27% or more was used.

[0127] 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.

[0128] 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.

[0129] 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.

[0130] 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.

[0131] 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.

[0132] 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.

[0133] The following describes the features of the lighting control device, lighting device, and lighting control method described based on the above embodiment.

[0134] <Technology 1> It includes a control unit that outputs control signals for controlling the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit, The control signal is a dynamic signal such that the output of light emitted by each of the first, second, third, and fourth light sources repeatedly increases and decreases. P1a is defined as the maximum value of the control signal output to the first light source unit or the output of light emitted by the first light source unit. P2a is defined as the maximum value of the control signal output to the second light source unit or the output of light emitted by the second light source unit that is closest to the maximum value P1a over time. In the control signal output to the first light source unit or the output of light emitted by the first light source unit, the maximum value closest to the maximum value P1a over time is set to P3a. Let t1a be the time difference between the time point at the maximum value P1a and the time point at the maximum value P2a. Let t2a be the time difference between the time of the maximum value P2a and the time of the maximum value P3a. P1b is defined as the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit. P2b is defined as the maximum value of the control signal output to the fourth light source unit or the output of light emitted by the fourth light source unit that is closest to the maximum value P1b over time. In the control signal output to the third light source unit or the output of light emitted by the third light source unit, the maximum value closest to the maximum value P1b over time is set to P3b. Let t1b be the time difference between the time point at the maximum value P1b and the time point at the maximum value P2b. If t2b is the time difference between the time of the maximum value P2b and the time of the maximum value P3b, When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along one side to the other side of the passage, when t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light so as to satisfy t1a ≠ t1b, or when t2a > t1a and t2b > t1b, the control unit outputs the control signal that satisfies t1a ≠ t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit Illumination control device <​​​​​​​​​​​​​​​​​​ <Technology 4> When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along the passage from one side to the other, and t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light so as to satisfy t1a > t1b, or the control unit outputs the control signal that satisfies t1a > t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit when t2a > t1a and t2b > t1b. A lighting control device as described in Technical 1.

[0138] <Technology 5> The minimum value of the time difference t1a of the first set including the first light source unit and the second light source unit is smaller than the minimum value of the time difference t1b of the second set including the third light source unit and the fourth light source unit, or The average value of the time difference t1a of the first set, including the first and second light sources, is smaller than the average value of the time difference t1b of the second set, including the third and fourth light sources. A lighting control device as described in Technical 1.

[0139] <Technology 6> The period of the control signal in the first set or the period of light output from the first light source, second light source, third light source and fourth light source unit has the same relationship with the period of the control signal in the second set or the period of light output from the first light source, second light source, third light source and fourth light source unit. A lighting control device as described in Technical 5.

[0140] <Technology 7> The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first light source, the second light source, the fifth light source, the sixth light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, the transition rate between two adjacent light-irradiated areas where light emitted from two adjacent light sources irradiates the surface to be illuminated gradually decreases from one side to the other. A lighting control device as described in any one of the technologies 1 to 6.

[0141] <Technology 8> The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first light source, the second light source, the fifth light source, the sixth light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, the transition rate between two adjacent light-irradiated areas where light emitted from two adjacent light sources irradiates the surface to be illuminated increases gradually from one side to the other. A lighting control device as described in any one of the technologies 1 to 6.

[0142] <Technology 9> The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first, second, fifth, sixth, third, and fourth light sources are arranged in this order along the passage from one side to the other, the phase difference of the light output in two adjacent light-irradiated areas, where light emitted from two adjacent light sources irradiates the surface to be illuminated, gradually increases from one side to the other. A lighting control device as described in any one of the technologies 1 to 6.

[0143] <Technology 10> The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first light source, the second light source, the fifth light source, the sixth light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, the phase difference of the light output in two adjacent light-irradiated areas, where light emitted from two adjacent light sources illuminates the surface to be irradiated, gradually decreases from one side to the other. A lighting control device as described in any one of the technologies 1 to 6.

[0144] <Technology 11> The phases of the respective control signals output to the first light source unit and the second light source unit are different. The phases of the respective control signals output to the third light source unit and the fourth light source unit are different. A lighting control device as described in any one of the technologies 1 to 10.

[0145] <Technology 12> When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface to be illuminated transitions in a linear fashion. A lighting control device as described in any one of the technologies 1 to 11.

[0146] <Technology 13> When light emitted from the first light source, the second light source, the third light source, and the fourth light source irradiates a surface to be irradiated, the light irradiated onto the surface transitions in a curved manner. A lighting control device as described in any one of the technologies 1 to 11.

[0147] <Technology 14> When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface to be illuminated transitions in a sawtooth pattern. A lighting control device as described in any one of the technologies 1 to 11.

[0148] <Technology 15> When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface to be illuminated transitions in a planar manner. A lighting control device as described in any one of the technologies 1 to 11.

[0149] <Technology 16> When light emitted from the first light source, the second light source, the third light source, and the fourth light source irradiates a surface to be illuminated, the light irradiated onto the surface transitions in an L-shape. A lighting control device as described in any one of the technologies 1 to 11.

[0150] <Technology 17> When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface transitions in a diagonal pattern. A lighting control device as described in any one of the technologies 1 to 11.

[0151] <Technology 18> It includes a control unit that outputs control signals for controlling the first light source unit, the second light source unit, and the third light source unit, The control signal is a dynamic signal that causes the output of light emitted by the first light source unit, the second light source unit, and the third light source unit to repeatedly increase or decrease. P1a is defined as the maximum value of the control signal output to the first light source unit or the output of light emitted by the first light source unit. P2a is defined as the maximum value of the control signal output to the second light source unit or the output of light emitted by the second light source unit that is closest to the maximum value P1a over time. In the control signal output to the first light source unit or the output of light emitted by the first light source unit, the maximum value closest to the maximum value P1a over time is set to P3a. Let the time difference between the time point of the maximum value P1a and the time point of the maximum value P2a be t1a, Let the time difference between the time point of the maximum value P2a and the time point of the maximum value P3a be t2a, Let the maximum value of the output value in the output of the control signal output to the third light source unit or the light emitted by the third light source unit be P1b, In the output of the control signal output to the third light source unit or the light emitted by the third light source unit, let the maximum value closest to the maximum value P1b over time be P3b, Let the time difference between the time point of the maximum value P1b and the time point of the maximum value P2a be t1b, Let the time difference between the time point of the maximum value P1b and the time point of the maximum value P3b be t2b. Then, When the first light source unit, the second light source unit, and the third light source unit are arranged side by side in this order along one side of the passage to the other side, when t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, and the third light source unit output light so as to satisfy t1a < t1b, or when t2a > t1a and t2b > t1b, the control unit outputs the control signal that satisfies t1a < t1b to each of the first light source unit, the second light source unit, and the third light source unit Lighting control device.

[0152] <Technology 19> Comprising a control unit that outputs control signals for controlling each of the first light source unit, the second light source unit, and the third light source unit, The control signal is a dynamic signal such that the output of the light emitted by each of the first light source unit, the second light source unit, and the third light source unit repeats increasing and decreasing, Let the maximum value of the output value in the output of the control signal output to the first light source unit or the light emitted by the first light source unit be P1a, Let the maximum value closest to the maximum value P1a over time and the maximum value of the output value in the output of the control signal output to the second light source unit or the light emitted by the second light source unit be P2a, In the output of the control signal output to the first light source unit or the light emitted by the first light source unit, let the maximum value closest to the maximum value P1a over time be P3a, [[ID=Let t1a be the time difference between the time point at the maximum value P1a and the time point at the maximum value P2a. Let t2a be the time difference between the time of the maximum value P2a and the time of the maximum value P3a. P1b is defined as the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit. In the control signal output to the third light source unit or the output of light emitted by the third light source unit, the maximum value closest to the maximum value P1b over time is set to P3b. Let t1b be the time difference between the time point at the maximum value P1b and the time point at the maximum value P2a. If we let t2b be the time difference between the time of the maximum value P1b and the time of the maximum value P3b, When the first light source unit, the second light source unit, and the third light source unit are arranged in this order along the passage from one side to the other, and t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, and the third light source unit output light so as to satisfy t1a > t1b, or the control unit outputs the control signal that satisfies t1a > t1b to each of the first light source unit, the second light source unit, and the third light source unit when t2a > t1a and t2b > t1b. Lighting control device.

[0153] <Technology 20> A lighting control device described in any one of the technologies 1 to 19, It comprises a first light source unit, a second light source unit, a third light source unit, and a fourth light source unit, each irradiating different regions of the surface to be irradiated with light. Lighting device.

[0154] <Technology 21> This includes outputting control signals to control the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit, The control signal is a dynamic signal such that the output of light emitted by each of the first, second, third, and fourth light sources repeatedly increases and decreases. Let the maximum value of the output value in the control signal output to the first light source unit or the light emitted by the first light source unit be P1a. Let the maximum value of the output value in the control signal output to the second light source unit or the light emitted by the second light source unit, which is closest to the maximum value P1a over time, be P2a. In the output of the control signal output to the first light source unit or the light emitted by the first light source unit, let the maximum value closest to the maximum value P1a over time be P3a. Let the time difference between the time point of the maximum value P1a and the time point of the maximum value P2a be t1a. Let the time difference between the time point of the maximum value P2a and the time point of the maximum value P3a be t2a. Let the maximum value of the output value in the control signal output to the third light source unit or the light emitted by the third light source unit be P1b. Let the maximum value of the output value in the control signal output to the fourth light source unit or the light emitted by the fourth light source unit, which is closest to the maximum value P1b over time, be P2b. In the output of the control signal output to the third light source unit or the light emitted by the third light source unit, let the maximum value closest to the maximum value P1b over time be P3b. Let the time difference between the time point of the maximum value P1b and the time point of the maximum value P2b be t1b. When the time difference between the time point of the maximum value P2b and the time point of the maximum value P3b is t2b, When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along one side of the passage to the other side, and when t2a > t1a and t2b > t1b, output light from the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit so that t1a < t1b is satisfied, or when t2a > t1a and t2b > t1b, output the control signal that satisfies t1a < t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit. Illumination control method.

[0155] <Technology 22> This includes outputting control signals to control the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit, The control signal is a dynamic signal such that the output of light emitted by each of the first, second, third, and fourth light sources repeatedly increases and decreases. P1a is defined as the maximum value of the control signal output to the first light source unit or the output of light emitted by the first light source unit. P2a is defined as the maximum value of the control signal output to the second light source unit or the output of light emitted by the second light source unit that is closest to the maximum value P1a over time. In the control signal output to the first light source unit or the output of light emitted by the first light source unit, the maximum value closest to the maximum value P1a over time is set to P3a. Let t1a be the time difference between the time point at the maximum value P1a and the time point at the maximum value P2a. Let t2a be the time difference between the time of the maximum value P2a and the time of the maximum value P3a. P1b is defined as the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit. P2b is defined as the maximum value of the control signal output to the fourth light source unit or the output of light emitted by the fourth light source unit that is closest to the maximum value P1b over time. In the control signal output to the third light source unit or the output of light emitted by the third light source unit, the maximum value closest to the maximum value P1b over time is set to P3b. Let t1b be the time difference between the time point at the maximum value P1b and the time point at the maximum value P2b. If t2b is the time difference between the time of the maximum value P2b and the time of the maximum value P3b, When the first light source, the second light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, and t2a > t1a and t2b > t1b, the first light source, the second light source, the third light source, and the fourth light source output light such that t1a > t1b, or when t2a > t1a and t2b > t1b, the control signals that satisfy t1a > t1b are output to each of the first light source, the second light source, the third light source, and the fourth light source. Lighting control method.

[0156] 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]

[0157] 2. Lighting control device 10. Lighting device (first light source unit, second light source unit, third light source unit, and fourth light source unit) 10a 1st lighting device (1st light source section) 10b Second lighting device (second light source section) 10c Third lighting device (third light source section) 10d 4th lighting device (4th light source part) 10e 5th lighting device (5th light source section) 10f 6th lighting device (6th light source) 11. Light sources (first light source unit, second light source unit, third light source unit, and fourth light source unit) 20 Control Unit

Claims

1. It includes a control unit that outputs control signals for controlling the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit, The control signal is a dynamic signal that causes the output of light emitted by each of the first, second, third, and fourth light sources to repeatedly increase and decrease. P1a is defined as the maximum value of the control signal output to the first light source unit or the output of light emitted by the first light source unit. P2a is defined as the maximum value of the control signal output to the second light source unit or the output of light emitted by the second light source unit that is closest to the maximum value P1a over time. In the control signal output to the first light source unit or the output of light emitted by the first light source unit, the maximum value closest to the maximum value P1a over time is set to P3a. Let t1a be the time difference between the time point at the maximum value P1a and the time point at the maximum value P2a. Let t2a be the time difference between the time point at the maximum value P2a and the time point at the maximum value P3a. P1b is defined as the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit. P2b is defined as the maximum value of the control signal output to the fourth light source unit or the output of light emitted by the fourth light source unit that is closest to the maximum value P1b over time. In the control signal output to the third light source unit or the output of light emitted by the third light source unit, the maximum value closest to the maximum value P1b over time is set to P3b. Let t1b be the time difference between the time point at the maximum value P1b and the time point at the maximum value P2b. If t2b is the time difference between the time of the maximum value P2b and the time of the maximum value P3b, When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along the passage from one side to the other, and when t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light such that t1a ≠ t1b, or the control unit outputs the control signal that satisfies t1a ≠ t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit when t2a > t1a and t2b > t1b. Lighting control device.

2. If da is the distance between the points of maximum horizontal illuminance on the illuminated surface irradiated by the first light source and the second light source, respectively, and db is the distance between the points of maximum horizontal illuminance on the illuminated surface irradiated by the third light source and the fourth light source, respectively, The control unit outputs light from the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit such that da / t1a > db / t1b when t2a > t1a and t2b > t1b, or outputs the control signal that satisfies da / t1a > db / t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit when t2a > t1a and t2b > t1b. The lighting control device according to claim 1.

3. When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along the passage from one side to the other, and when t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light such that t1a < t1b, or when t2a > t1a and t2b > t1b, the control unit outputs the control signals that satisfy t1a < t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit. The lighting control device according to claim 1.

4. When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along the passage from one side to the other, and t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light so as to satisfy t1a > t1b, or the control unit outputs the control signal that satisfies t1a > t1b to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit when t2a > t1a and t2b > t1b. The lighting control device according to claim 1.

5. A set including the first light source unit and the second light source unit is defined as the first set, The set including the third light source unit and the fourth light source unit is designated as the second set. The minimum value of the time difference t1a for the first set is less than the minimum value of the time difference t1b for the second set, or The average value of the time difference t1a of the first set, including the first and second light sources, is smaller than the average value of the time difference t1b of the second set, including the third and fourth light sources. The lighting control device according to claim 1.

6. The period of the control signal for controlling the first set or the period of light output from the first light source unit, the second light source unit, the third light source unit and the fourth light source unit has the same relationship with the period of the control signal for controlling the second set or the period of light output from the first light source unit, the second light source unit, the third light source unit and the fourth light source unit. The lighting control device according to claim 5.

7. The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first light source, the second light source, the fifth light source, the sixth light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, the transition speed between two adjacent light-irradiated areas where light emitted from two adjacent light sources irradiates the surface to be illuminated gradually decreases from one side to the other. A lighting control device according to any one of claims 1 to 6.

8. The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first light source, the second light source, the fifth light source, the sixth light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, the transition speed between two adjacent light-irradiated areas where light emitted from two adjacent light sources irradiates the surface to be illuminated gradually increases from one side to the other. A lighting control device according to any one of claims 1 to 6.

9. The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first light source, the second light source, the fifth light source, the sixth light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, the phase difference of the light output in two adjacent light-irradiated areas, where light emitted from two adjacent light sources irradiates the surface to be illuminated, gradually increases from one side to the other. A lighting control device according to any one of claims 1 to 6.

10. The control unit further outputs control signals for controlling the fifth and sixth light sources. The control signal is a dynamic signal that causes the output of light emitted by the fifth light source unit and the sixth light source unit to repeatedly increase and decrease. When the first light source, the second light source, the fifth light source, the sixth light source, the third light source, and the fourth light source are arranged in this order along the passage from one side to the other, the phase difference of the light output in two adjacent light-irradiated areas, where light emitted from two adjacent light sources irradiates the surface to be illuminated, gradually decreases from one side to the other. A lighting control device according to any one of claims 1 to 6.

11. The phases of the respective control signals output to the first light source unit and the second light source unit are different. The phases of the respective control signals output to the third light source unit and the fourth light source unit are different. A lighting control device according to any one of claims 1 to 6.

12. When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface to be illuminated transitions in a linear fashion. A lighting control device according to any one of claims 1 to 6.

13. When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface to be illuminated transitions in a curved manner. A lighting control device according to any one of claims 1 to 6.

14. When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface to be illuminated transitions in a sawtooth pattern. A lighting control device according to any one of claims 1 to 6.

15. When light emitted from the first, second, third, and fourth light sources illuminates a surface to be illuminated, the light illuminating the surface transitions so that the trajectory of the illumination position moves from one side of the surface to the other, as the illumination position changes over time. A lighting control device according to any one of claims 1 to 6.

16. When light emitted from the first light source, the second light source, the third light source, and the fourth light source irradiates a surface to be illuminated, the light irradiated onto the surface transitions in an L-shape. A lighting control device according to any one of claims 1 to 6.

17. When light emitted from the first light source, second light source, third light source, and fourth light source is shone onto the surface to be illuminated, the light shone onto the surface transitions in a diagonal pattern. A lighting control device according to any one of claims 1 to 6.

18. A lighting control device according to any one of claims 1 to 6, It comprises a first light source unit, a second light source unit, a third light source unit, and a fourth light source unit, each irradiating light to different regions on the surface to be irradiated. Lighting device.

19. This includes outputting control signals to control the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit, The control signal is a dynamic signal that causes the output of light emitted by each of the first, second, third, and fourth light sources to repeatedly increase and decrease. P1a is defined as the maximum value of the control signal output to the first light source unit or the output of light emitted by the first light source unit. P2a is defined as the maximum value of the control signal output to the second light source unit or the output of light emitted by the second light source unit that is closest to the maximum value P1a over time. In the control signal output to the first light source unit or the output of light emitted by the first light source unit, the maximum value closest to the maximum value P1a over time is set to P3a. Let t1a be the time difference between the time point at the maximum value P1a and the time point at the maximum value P2a. Let t2a be the time difference between the time point at the maximum value P2a and the time point at the maximum value P3a. P1b is defined as the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit. P2b is defined as the maximum value of the control signal output to the fourth light source unit or the output of light emitted by the fourth light source unit that is closest to the maximum value P1b over time. In the control signal output to the third light source unit or the output of light emitted by the third light source unit, the maximum value closest to the maximum value P1b over time is set to P3b. Let t1b be the time difference between the time point at the maximum value P1b and the time point at the maximum value P2b. If t2b is the time difference between the time of the maximum value P2b and the time of the maximum value P3b, When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along the passage from one side to the other, if t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light such that t1a < t1b, or if t2a > t1a and t2b > t1b, the control signals that satisfy t1a < t1b are output to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit. Lighting control method.

20. This includes outputting control signals to control the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit, The control signal is a dynamic signal that causes the output of light emitted by each of the first, second, third, and fourth light sources to repeatedly increase and decrease. P1a is defined as the maximum value of the control signal output to the first light source unit or the output of light emitted by the first light source unit. P2a is defined as the maximum value of the control signal output to the second light source unit or the output of light emitted by the second light source unit that is closest to the maximum value P1a over time. In the control signal output to the first light source unit or the output of light emitted by the first light source unit, the maximum value closest to the maximum value P1a over time is set to P3a. Let t1a be the time difference between the time point at the maximum value P1a and the time point at the maximum value P2a. Let t2a be the time difference between the time point at the maximum value P2a and the time point at the maximum value P3a. P1b is defined as the maximum value of the control signal output to the third light source unit or the output of light emitted by the third light source unit. P2b is defined as the maximum value of the control signal output to the fourth light source unit or the output of light emitted by the fourth light source unit that is closest to the maximum value P1b over time. In the control signal output to the third light source unit or the output of light emitted by the third light source unit, the maximum value closest to the maximum value P1b over time is set to P3b. Let t1b be the time difference between the time point at the maximum value P1b and the time point at the maximum value P2b. If t2b is the time difference between the time of the maximum value P2b and the time of the maximum value P3b, When the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit are arranged in this order along the passage from one side to the other, and when t2a > t1a and t2b > t1b, the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit output light such that t1a > t1b, or when t2a > t1a and t2b > t1b, the control signals that satisfy t1a > t1b are output to each of the first light source unit, the second light source unit, the third light source unit, and the fourth light source unit. Lighting control method.

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