Lighting control system

Abstract

To provide a lighting control system capable of enhancing attractiveness and inductivity for a person by changing light colors.SOLUTION: A lighting control system 1 comprises a plurality of lighting devices 10 and a controlling unit 20 for generating and transmitting control signals for the lighting devices 10. Each control signal is: an output signal that individually changes respective light colors of the plurality of lighting devices 10 in a chromaticity section that is stipulated in JIS Z 8110-1995 and includes a first region indicating a color section of white and an annular second region indicating a plurality of color sections adjacent to the first region; and a dynamic output signal that when changing a color of light emitted by each of the plurality of lighting devices 10, makes the color of light change so as to periodically and continuously move between a chromaticity point A located in a third region separated from the first region and the second region by a MacAdam ellipse 5-STEP or more and a chromaticity point B located in a region other than the first region and the second region and separated from the chromaticity point A by a MacAdam ellipse 13-STEP or more.SELECTED DRAWING: Figure 5

Description

[Technical field]

[0001] The present disclosure relates to a lighting control system. [Background technology]

[0002] The lighting system of Patent Document 1 is equipped with multiple lights, and the illuminance or color temperature of the multiple lights is changed sinusoidally over time, and controlled so that the sum of the illuminance or color temperature of the multiple lights is approximately constant over time. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2019-121531 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, there is a demand for lighting effects using chromatic colors. However, in lighting effects using chromatic colors, for example, when the color difference between two colors is small, even if the color of the light is changed, the change in color may be difficult to recognize. For this reason, there is a demand for increasing the attention of people and guiding people by changing the color of light emitted by multiple lighting devices.

[0005] Therefore, an object of the present disclosure is to provide a lighting control system that can increase the eye-catching and guiding characteristics of a person by changing the color of light. [Means for solving the problem]

[0006] According to an aspect of the present disclosure, there is provided a lighting control system comprising a plurality of light source units and a control unit which generates and transmits control signals for the light source units, the control unit outputs a control signal capable of controlling each of the plurality of light source units so that light is irradiated onto a plurality of portions of an irradiation surface, each of the control signals being an output signal which individually changes a color of light of each of the plurality of light source units in a chromaticity range defined in “JIS Z 8110-1995” and including a first region which indicates a color range of “white” and a ring-shaped second region which indicates a plurality of color ranges adjacent to the first region, and in the case of changing the color of light emitted by each of the plurality of light source units, the output signal is a dynamic output signal which changes the light color so as to periodically and continuously move between a chromaticity point A located in a third region which is 5-steps or more of a MacAdam ellipse away from the first region and the second region, and a chromaticity point B which is in a region other than the first region and the second region and which is 13-steps or more of a MacAdam ellipse away from the chromaticity point A. Effect of the Invention

[0007] According to the lighting control system of the present disclosure, it is possible to increase the eye-catching and guiding characteristics of a person by changing the color of the light. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a block diagram showing a lighting control system according to an embodiment. [Diagram 2] FIG. 2 is a schematic diagram showing a case where the lighting control system is installed in a passageway. [Diagram 3] FIG. 3 is a diagram showing the light intensity and the control signal. [Figure 4] FIG. 4 is a diagram showing chromaticity divisions. [Diagram 5] FIG. 5 is a diagram showing a first region, a second region, a third region, a fourth region, and a fifth region in the chromaticity division. [Figure 6] FIG. 6 is a diagram showing the relationship between the number of steps of a MacAdam ellipse in a chromaticity division and color temperature. [Figure 7]FIG. 7 is a diagram showing the relationship between chromaticity point E and chromaticity point F in the chromaticity division. [Figure 8] FIG. 8 is a diagram showing a case where, when each of a plurality of lighting devices irradiates light onto an irradiation surface, the color of part of the light irradiated onto the irradiation surface changes. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. Note that each of the embodiments described below shows a specific example of the present disclosure. Therefore, the numerical values, shapes, materials, components, arrangement and connection of the components, steps, order of steps, and the like shown in the following embodiments are merely examples and are not intended to limit the present disclosure.

[0010] Each figure is a schematic diagram and is not necessarily precisely illustrated. Therefore, for example, the scales and the like do not necessarily match in each figure. Furthermore, in each figure, the same reference numerals are given to substantially the same configurations, and duplicated explanations are omitted or simplified.

[0011] (Embodiment) <Configuration and Function> A lighting control system 1 according to the following embodiment will be described with reference to FIGS. 1 to 7. FIG.

[0012] FIG. 1 is a block diagram showing a lighting control system 1 according to a first embodiment. FIG. 2 is a schematic diagram showing a case where the lighting control system 1 is installed in a passageway. FIG. 3 is a diagram showing light output (luminous intensity or illuminance) and a control signal. FIG. 4 is a diagram showing chromaticity divisions. FIG. 5 is a diagram showing a first region, a second region, a third region, a fourth region, and a fifth region in the chromaticity division. FIG. 6 is a diagram showing the relationship between the number of steps of a MacAdam ellipse in the chromaticity division and color temperature. FIG. 7 is a diagram showing the relationship between chromaticity point E and chromaticity point F in the chromaticity division.

[0013] As shown in FIG. 1, the lighting control 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 control system 1 of the present embodiment can guide people in a predetermined direction, gather the guided people in a predetermined area, or guide people gathered in a predetermined area to disperse them by adjusting the lighting mode. For example, it is known that people have a characteristic that they are more likely to be guided to a bright place than to a dark place in the vertical plane illuminance. In addition, by changing the color of the light, people pay attention to the change in color. For this reason, since the lighting control system 1 illuminates the ground, it is expected that the lighting control system 1 can guide people by changing the brightness and color of the light to affect people's emotions.

[0014] Such a lighting control system 1 is used in places where it is necessary to guide people, have them stay, or have them move around, such as parks, amusement parks, stations, large-scale facilities, and the like.

[0015] As shown in FIGS. 1 and 2, a lighting control system 1 includes a plurality of lighting devices 10, a lighting control device 2, and a power supply unit 30.

[0016] Each of the lighting devices 10 is, for example, a lighting device 10 for outdoor use such as a street light, a lighting device 10 for a facility installed in a facility, etc. In the present embodiment, each of the lighting devices 10 is arranged along a passage. In FIG. 2, five lighting devices 10 are illustrated as the lighting devices 10, namely, a first lighting device 10a, a second lighting device 10b, a third lighting device 10c, a fourth lighting device 10d, and a fifth lighting device 10e. The lighting device 10 is a general name including the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, the fourth lighting device 10d, and the fifth lighting device 10e. The number of the lighting devices 10 is merely an example, and is not limited to five lighting devices 10. For example, the number of the lighting devices 10 may be two or more, and preferably three or more. The lighting device 10 is an example of a light source unit.

[0017] Each of the plurality of lighting devices 10 includes a light source 11 and a light emission control circuit (not shown). The light source 11 is a light emitting module in which a plurality of LED (Light Emitting Diode) elements are mounted. Each of the plurality of 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 be configured to emit white light by combining a blue LED and a yellow phosphor. Furthermore, the light source 11 may emit various light colors by selectively combining two or more of these LED elements. Note that the present invention is not limited to these, and a commonly used configuration may be used as the light source 11. The light emission control circuit independently controls each LED chip, so that each of the plurality of lighting devices 10 emits light to an irradiation surface and irradiates the irradiation surface with light. The light source 11 may be an example of a light source unit.

[0018] When the lighting device 10 receives a control signal from the lighting control device 2, the lighting device 10 turns on in a lighting mode corresponding to the control signal. The lighting device 10 has a dimming function and a color adjustment function.

[0019] For example, the lighting device 10 can adjust the brightness of the light emitted by the light source 11 to a plurality of levels as a dimming function, thereby making the brightness of the emitted light darker or brighter. Also, the lighting device 10 can periodically fluctuate the output of the emitted light. Here, "periodic" may mean the same period or different periods.

[0020] Furthermore, the lighting device 10 can emit white light ranging from a low color temperature such as incandescent light to a high color temperature such as warm white, neutral white, or daylight light as a color adjustment function. The lighting device 10 can periodically change the color of the emitted light. For example, in a lighting design, the lighting device 10 can periodically change the color temperature so as to repeatedly increase or decrease the redness of the emitted light. Furthermore, the lighting device 10 can change the color of the emitted light by changing the wavelength of the emitted light as a lighting design.

[0021] The relationship between the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, the fourth lighting device 10d, and the fifth lighting device 10e from one side of the multiple lighting devices 10 in FIG. 2 and the light irradiation areas A1 to A5 will be described.

[0022] The first lighting device 10a emits light onto a light irradiation area A1 on the irradiation surface of the passage. The second lighting device 10b emits light onto a light irradiation area A2 on the irradiation surface. The third lighting device 10c emits light onto a light irradiation area A3 on the irradiation surface. The fourth lighting device 10d emits light onto a light irradiation area A4 on the irradiation surface. The fifth lighting device 10e emits light onto a light irradiation area A5 on the irradiation surface.

[0023] The light irradiation areas A1 to A5 are different locations on the irradiation surface of the passage. In Fig. 2, the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, the fourth lighting device 10d, and the fifth lighting device 10e are arranged in this order, so the light irradiation areas A1 to A5 are also arranged in this order.

[0024] The lighting control device 2 can individually control each of the multiple lighting devices 10. The lighting control device 2 can also collectively control each of the multiple lighting devices 10. The lighting control device 2 can output a control signal for causing each of the multiple lighting devices 10 to illuminate in a predetermined manner to each of the multiple lighting devices 10, thereby causing each of the multiple lighting devices 10 to illuminate in a predetermined manner in response to the control signal.

[0025] Specifically, the lighting control device 2 includes a control unit 20.

[0026] The control unit 20 generates a control signal for controlling each of the plurality of lighting devices 10, and outputs the generated control signal to each of the plurality of lighting devices 10. In other words, the control unit 20 outputs a control signal capable of controlling each of the plurality of lighting devices 10 so that light is irradiated onto a plurality of portions of the irradiation surface.

[0027] Each control signal is an output signal based on a chromaticity region.

[0028] Specifically, the chromaticity classification is defined in "JIS Z 8110-1995" and indicates a plurality of chromaticities. The chromaticity classification is divided into the following regions: "white", "(greenish) white", "(yellowish) white", "(light) pink", "(purple) white", "(bluish) white", "(light) yellow", "(light) yellow-green", "(light) green", "(light) blue-green", "(light) blue", "(light) blue-purple", "(light) purple", "(purple) pink", "pink", "(orange) pink", "(light) yellow-red", "red", "yellow-red", "yellow", "yellow-green", "green", "blue-green", "blue", "blue-purple", "purple", and "red-purple".

[0029] The chromaticity section includes a first region and a ring-shaped second region that indicates a plurality of color sections adjacent to the first region. Specifically, the chromaticity section is composed of the first region, the second region, the third region, the fourth region, and the fifth region.

[0030] The first region is a region showing the "white" color division.

[0031] The second region is an annular region showing a plurality of color divisions adjacent to the first region. Specifically, the second region includes regions of the color divisions "(greenish) white", "(yellowish) white", "(light) pink", "(purplish) white", and "(bluish) white".

[0032] The third region indicates a color division adjacent to the second region, and is a ring-shaped region 5 steps away from the second region by the MacAdam ellipse. The third region is indicated by hatching with upward slanting lines to the left in a ring shape. Specifically, the third region is a part of each of the color divisions "(light) yellow", "(light) yellow-green", "(light) green", "(light) cyan", "(light) blue", "(light) cyan", "(light) purple", "(light) purple", "(purple) pink", "pink", "(orange) pink", and "(light) yellow-red", and is a part of the region that borders the second region.

[0033] The fourth region is an annular region showing a plurality of color divisions adjacent to the third region, excluding the third region. The fourth region is shown by annular hatching with diagonal lines sloping upward to the left, excluding the third region. Specifically, the fourth region includes the regions of the color divisions "(light) yellow", "(light) yellow-green", "(light) green", "(light) cyan", "(light) blue", "(light) blue-purple", "(light) purple", "(purple) pink", "pink", "(orange) pink", and "(light) yellow-red".

[0034] The fifth region is a ring-shaped region showing a plurality of color segments adjacent to the fourth region, specifically, the fifth region includes regions of the color segments "red", "yellow-red", "yellow", "yellow-green", "green", "cyan", "blue", "cyan", "purple", and "magenta".

[0035] Each control signal is an output signal that changes the color of light of each of the lighting devices 10 individually in the chromaticity division, and is a dynamic output signal that changes the light color so as to move periodically and continuously between a chromaticity point A located in a third region that is 5-steps or more away from the first and second regions on the MacAdam ellipse, and a chromaticity point B located in a region other than the first and second regions and 13-steps or more away from the chromaticity point A on the MacAdam ellipse. In other words, since each control signal is a dynamic output signal that changes the light color between the chromaticity point A and the chromaticity point B, each of the lighting devices 10 can emit light that changes periodically and continuously between the chromaticity point A and the chromaticity point B. Note that the chromaticity point A and the chromaticity point B shown in FIG. 5 are merely examples, and are not limited to FIG. 5.

[0036] The reason for the definition of "5-steps or more from a MacAdam ellipse" is that normally, humans can recognize the difference in color if they are 3-steps or more from a MacAdam ellipse. However, since there is a manufacturing error in each of the multiple lighting devices 10, the definition of "5-steps or more from a MacAdam ellipse" was made taking into account the manufacturing error.

[0037] The reason for "13-steps or more of MacAdam ellipses" will be explained. As shown in Fig. 6, if the MacAdam ellipses are 9-steps or more from 5700K to 7100K, 8-steps or more from 4600K to 5500K, 7-steps or more from 3800K to 4500K, 7-steps or more from 3250K to 3800K, and 13-steps or more from 2600K to 3250K, people can recognize the difference in color. For this reason, the distance is set to "13-steps or more of MacAdam ellipses" so that people can recognize the difference in color at any color temperature.

[0038] Moreover, each control signal is a dynamic output signal that changes the light color so as to move periodically and continuously between a chromaticity point C located in the first region, the second region, and the third region in the chromaticity division, and another chromaticity point D located in a region other than the first region and the second region in the chromaticity division. At this time, the chromaticity point C and the chromaticity point D may be located outside the regions adjacent to each other in the first region, the second region, the third region, the fourth region, and the fifth region. That is, in each control signal, the region in which the chromaticity point C exists and the region in which the chromaticity point D exists are set so as not to be adjacent to each other. Therefore, in the first region, the second region, the third region, the fourth region, and the fifth region, the chromaticity point C and the chromaticity point D are set so as to sandwich one or more regions therebetween. For example, when the chromaticity point C exists in the first region, the chromaticity point D may exist in the third region, the fourth region, and the fifth region. Also, for example, when the chromaticity point C exists in the second region, the chromaticity point D may exist in the fourth region and the fifth region. Also, for example, when chromaticity point C is in the third region, chromaticity point D may be in the fifth region. In this case, since chromaticity point C and chromaticity point D can be separated across one or more regions in the direction away from the white point (the direction in which color purity increases), humans can recognize a change in the color of the light. Note that chromaticity point C and chromaticity point D shown in FIG. 5 are merely examples and are not limited to FIG. 5.

[0039] In addition, when the chromaticity point E located in a region other than the first region and the second region is in the third region or in the fourth region adjacent to the third region, each control signal may be a dynamic output signal that changes the light color so as to periodically and continuously move between the chromaticity point E and another chromaticity point F located in the region opposite the chromaticity point E side when the first region, the second region, and the third region are divided in half by the second line, when a first line connecting the chromaticity point E and the white point in the chromaticity division and a second line including the white point and perpendicular to the first line are defined. The "opposite region" is a region that combines a part of the second region shown by the diagonal lattice hatching and a part of the third region adjacent to a part of the second region shown by the diagonal line hatching sloping upward to the left. In this case, the chromaticity point E and the chromaticity point F can be separated across one or more regions in the direction away from the white point, so that humans can recognize a change in the color of the light. It should be noted that the chromaticity points E and F shown in FIG. 7 are merely examples, and the present invention is not limited to FIG.

[0040] 3(a) and 3(b), each control signal can also individually change the light output of each of the multiple lighting devices 10. In this case, each of the multiple lighting devices 10 can emit light such that the color of the light changes periodically and continuously and the light output increases and decreases periodically and continuously in response to the control signal.

[0041] 3(a) and 3(b), only the first lighting device 10a and the second lighting device 10b are illustrated, but this is merely an example. For example, the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, the fourth lighting device 10d, and the fifth lighting device 10e may emit different colors of light. The first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e may receive the same first control signal, and the second lighting device 10b and the fourth lighting device 10d may receive the same second control signal.

[0042] Furthermore, the control unit 20 outputs control signals to the multiple lighting devices 10 to produce two or more types of light color patterns. That is, the control unit 20 outputs a control signal indicating a light color pattern to the target lighting device 10. In two or more types of light color patterns, the color of light irradiated onto the irradiation surface may change over time in all light color patterns, or the color of light irradiated onto the irradiation surface may change over time in one or more light color patterns. For this reason, for example, the color of light irradiated onto the irradiation surface in one light color pattern may change over time, and the color of light irradiated onto the irradiation surface in another light color pattern may be constant.

[0043] Specifically, when the two or more types of light color patterns include a first light color pattern and a second light color pattern, the color of light irradiated onto the irradiation surface by one or more lighting devices 10 in which the first light color pattern is set is different from the color of light irradiated onto the irradiation surface by one or more lighting devices 10 in which the second light color pattern is set. For example, the control unit 20 may output different control signals to the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e, and the second lighting device 10b and the fourth lighting device 10d. In other words, the control unit 20 may output control signals such that the color of light emitted by the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e (or the first light color pattern) is different from the color of light emitted by the second lighting device 10b and the fourth lighting device 10d (or the second light color pattern). In this case, the control unit 20 may control the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e so that the colors of the lights emitted by them change periodically in conjunction with each other.

[0044] When the first light color pattern and the second light color pattern are different, it means, for example, that the first light color pattern has chromaticity point A or B, and the second light color pattern has chromaticity point B or A. When a person compares the light of the first light color pattern with the light of the second light color pattern, they can recognize the difference in color.

[0045] Furthermore, the control unit 20 can set a predetermined regularity for the lighting devices 10 that execute two or more types of light color patterns. The predetermined regularity is, for example, a regularity based on a sequence such as an arithmetic progression, a geometric progression, a difference progression, or a Fibonacci sequence. For example, when the lighting devices 10 are arranged in one or more rows, the predetermined regularity is applied to the array. The predetermined regularity shown in FIG. 4 is a regularity based on an arithmetic progression.

[0046] Furthermore, the control unit 20 can change the light color pattern set in each of the multiple lighting devices 10 to another light color pattern. That is, the control unit 20 may automatically change the light color pattern to another light color pattern, or the control unit 20 may change the light color pattern to another light color pattern in response to an operational instruction given by a person via the input unit.

[0047] Furthermore, when the control unit 20 sets two or more types of light color patterns for the multiple lighting devices 10, the control unit 20 sets the same number of lighting devices 10 that emit light for each type of light color pattern. For example, when the control unit 20 sets two types of light color patterns for the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, and the fourth lighting device 10d, the control unit 20 may set two lighting devices, the first lighting device 10a and the third lighting device 10c, to the first light color pattern, and set two lighting devices, the second lighting device 10b and the fourth lighting device 10d, to the second light color pattern.

[0048] Furthermore, when the control unit 20 sets two or more types of light color patterns for the multiple lighting devices 10, the control unit 20 sets the types of light color patterns so that the difference in the number of lighting devices 10 for each type of light color pattern is equal to or less than 1. For example, when the control unit 20 sets two types of light color patterns for the first lighting device 10a, the second lighting device 10b, the third lighting device 10c, the fourth lighting device 10d, and the fifth lighting device 10e, the control unit 20 may set the three lighting devices, the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e, to the first light color pattern, and set the two lighting devices, the second lighting device 10b and the fourth lighting device 10d, to the second light color pattern.

[0049] Note that the number of types of light color patterns is merely an example and is not limited to this.Furthermore, the lighting device 10 that sets the light color patterns is also merely an example and is not limited to this.

[0050] Furthermore, as shown in (a) and (b) of FIG. 3, at least two of the phases in the control signals output to the plurality of lighting devices 10 are different from each other.

[0051] Specifically, the control unit 20 transmits control signals with different phases to each of the first lighting device 10a and the second lighting device 10b. That is, the control unit 20 transmits control signals with different phases to each of the first lighting device 10a and the second lighting device 10b, as indicated by the solid line and the dashed line in Fig. 3(b). As a result, as shown in Fig. 3(b), the output waveform of the light emitted by the first lighting device 10a and the output waveform of the light emitted by the second lighting device 10b are in different phases.

[0052] Furthermore, the cycles of the control signals output to the first lighting device 10a and the second lighting device 10b may be different from each other, that is, the control signals may be output to the first lighting device 10a and the second lighting device 10b at different cycles.

[0053] The control signal may be a dynamic output signal consisting of a signal with a waveform that increases only once per cycle and a signal with a waveform that decreases only once per cycle. Therefore, the light emitted by each of the lighting devices 10 per cycle also consists of light whose output increases only once and light whose output decreases only once. The control signal may also include a signal that turns the output of the lighting device 10 OFF or ON.

[0054] It should be noted that the control signals shown in (a) and (b) of FIG. 3 are merely examples, and the control signals are not limited to those shown in FIG.

[0055] The control unit 20 outputs a control signal to each of the plurality of lighting devices 10, which can control each of the plurality of lighting devices 10 that emit light so that the light is irradiated onto different areas on the illumination surface of the passage.

[0056] Specifically, when the first lighting device 10a and the second lighting device 10b are arranged in this order from one side to the other side of the passage as the multiple lighting devices 10, for example, the control unit 20 outputs different control signals to the first lighting device 10a and the second lighting device 10b. More specifically, the control unit 20 outputs control signals to each of the first lighting device 10a and the second lighting device 10b, which make the color of light emitted by the first lighting device 10a and the color of light emitted by the second lighting device 10b different. The first lighting device 10a emits light of a different color from the second lighting device 10b. As a result, the color of light of the irradiation surface irradiated with the light emitted by the first lighting device 10a is different from the color of light of the irradiation surface irradiated with the light emitted by the second lighting device 10b. The light-irradiated area A1 of the illuminated surface irradiated with the light emitted by the first lighting device 10a and the light-irradiated area A2 of the illuminated surface irradiated with the light emitted by the second lighting device 10b have different light colors, so the colors appear different on one side of the passageway and the other side.

[0057] The power supply unit 30 has a function of supplying power to the multiple lighting devices 10 and the lighting control device 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, drive power for causing each of the multiple light sources 11 to emit light. Specifically, the power supply unit 30 generates drive power for causing the light sources 11 to emit light, and supplies this drive power to each of the light sources 11. In other words, the power supply unit 30 converts commercial AC power into DC power, and supplies this DC power to each of the light sources 11 as drive power for causing the light sources 11 to emit light. This causes the light sources 11 to emit light.

[0058] Next, with reference to FIG. 8, a description will be given of how the light irradiated onto the irradiation surface transitions.

[0059] FIG. 8 is a diagram showing a case where, when each of a plurality of lighting devices 10 irradiates light onto an irradiation surface, the color of part of the light irradiated onto the irradiation surface changes.

[0060] 8 illustrates a lighting control system 1 in which five lighting devices 10 are lined up along a passage as a plurality of lighting devices 10, and emit light in a regular sequence of light colors. In FIG. 8, the light color patterns of the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e change, while the light color patterns of the second lighting device 10b and the fourth lighting device 10d are constant. In other words, the chromaticity is constant in the light irradiation areas A2 and A4.

[0061] 8, the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e irradiate the light irradiation areas A1, A3, and A5 with light having a color different from that of the light irradiated by the second lighting device 10b and the fourth lighting device 10d. The chromaticity of the light irradiation areas A1, A3, and A5 is different from that of the light irradiation areas A2 and A4, and the chromaticity changes from blue to yellow.

[0062] 8, the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e irradiate the light irradiation areas A1, A3, and A5 with light so that the chromaticity becomes even more yellowish than in the first stage. The chromaticity of the light irradiation areas A1, A3, and A5 differs from that of the light irradiation areas A2 and A4, and the chromaticity changes from bluish to more yellowish than in the first stage.

[0063] 8, the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e irradiate the light irradiation areas A1, A3, and A5 with light so that the chromaticity becomes even more yellowish than in the second stage. The chromaticity of the light irradiation areas A1, A3, and A5 differs from that of the light irradiation areas A2 and A4, and the chromaticity becomes more yellowish than in the second stage.

[0064] 8, the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e irradiate the light irradiation areas A1, A3, and A5 with light having a color different from that of the light irradiated by the second lighting device 10b and the fourth lighting device 10d. The chromaticity of the light irradiation areas A1, A3, and A5 is different from that of the light irradiation areas A2 and A4, and the chromaticity changes from yellowish to blueish.

[0065] Similarly, the colors of the lights emitted by the first lighting device 10a, the third lighting device 10c, and the fifth lighting device 10e are repeatedly changed.

[0066] In this way, the control unit 20 can set a predetermined regularity for the multiple lighting devices 10 that execute two or more types of light color patterns. As a result, the multiple lighting devices 10 can emit light of a light color pattern that has the predetermined regularity, thereby changing the chromaticity of the light irradiation areas A1 to A5. In addition, the predetermined regularity is a regularity based on a sequence such as an arithmetic progression, a geometric progression, a difference progression, or a Fibonacci sequence. The predetermined regularity is a regularity based on an arithmetic progression.

[0067] In the present embodiment, the color of the light changes from blue to yellow, but the present invention is not limited to this. The color may change from yellow to blue. The color of the light from each of the lighting devices 10 may be changed along a line connecting two predetermined points in the chromaticity division.

[0068] Furthermore, in the present embodiment, the case where chromaticity is changed has been described with reference to FIG. 4, but the control unit 20 can also change the output of light emitted by each of the multiple lighting devices 10.

[0069] <Action and effect> Next, the effects of the lighting control system 1 in the present embodiment will be described.

[0070] The lighting control system 1 in the technique 1 of the present embodiment includes a plurality of lighting devices 10 and a control unit 20 that generates and transmits control signals for the lighting devices 10. The control unit 20 outputs control signals that can control each of the plurality of lighting devices 10 so that light is irradiated to a plurality of portions of the irradiation surface. Each control signal is an output signal that individually changes the color of light from each of the plurality of lighting devices 10 in a chromaticity range defined in "JIS Z 8110-1995" and including a first range indicating a color range of "white" and a ring-shaped second range indicating a plurality of color ranges adjacent to the first range. When changing the color of light emitted by each of the plurality of lighting devices 10, the output signal is a dynamic output signal that periodically and continuously changes the light color between a chromaticity point A located in a third range that is 5-steps or more away from the first and second ranges of the MacAdam ellipse and a chromaticity point B located in a range other than the first and second ranges and 13-steps or more away from the chromaticity point A of the MacAdam ellipse.

[0071] For example, it is known that on an xy chromaticity diagram, the saturation increases as one moves radially away from the white point. In this embodiment, the first region of "white" and the region adjacent to the first region, i.e., the second region equivalent to "white", have low saturation, while the fourth and fifth regions, which are farther away from the first region, have gradually higher saturation. For this reason, when comparing the first and second regions with the fourth and fifth regions, the saturation is different, making it easier for people to recognize the color difference.

[0072] In this embodiment, chromaticity point A in the first, second and third regions is separated from chromaticity point B in the fourth and fifth regions by 13 MacAdam ellipses or more, so that even if chromaticity point A and chromaticity point B are both in the third region, people can recognize the change in the color of the light. Therefore, by people recognizing the change in the color of the light, it is possible to affect people's emotions regarding the attractiveness and inductiveness.

[0073] Therefore, the lighting control system 1 can increase the eye-catching and guiding characteristics of people by changing the color of the light. As a result, the lighting control system 1 can realize affordance lighting.

[0074] Furthermore, the lighting control system 1 in Technique 2 of the present embodiment includes a plurality of lighting devices 10 and a control unit 20 that generates and transmits control signals for the lighting devices 10. The control unit 20 also outputs control signals capable of controlling each of the plurality of lighting devices 10 so that light is irradiated onto a plurality of portions of an illumination surface. Each control signal is a dynamic output signal that changes the light color periodically and continuously between a chromaticity point C located within the first, second, and third regions in the chromaticity division and another chromaticity point D located within a region other than the first and second regions in the chromaticity division, the chromaticity point C being located within the first, second, and third regions in the chromaticity division, and the chromaticity point D being located outside the first and second regions in the chromaticity division, the chromaticity point C and the chromaticity point D being located outside the regions adjacent to each other in the first, second, third, fourth, and fifth regions.

[0075] According to this, the color of light irradiated onto the illumination surface by each of the multiple lighting devices 10 changes between chromaticity point C and chromaticity point D across one or more regions, so that the distance between chromaticity point C and chromaticity point D can be increased compared to, for example, a case in which a chromaticity point is set in each of two adjacent regions. This allows people to recognize the change in the color of the light. This allows people to recognize the change in the color of the light, which can affect their emotions in terms of attention and guidance.

[0076] Therefore, the lighting control system 1 can increase the eye-catching and guiding characteristics of people by changing the color of the light. As a result, the lighting control system 1 can realize affordance lighting.

[0077] Furthermore, the lighting control system 1 in the third technique of the present embodiment is the lighting control system 1 described in the technique 1 or technique 2. In this case, when a chromaticity point E located in a region other than the first region and the second region is present in the third region or in a fourth region that is a region adjacent to the third region, when a first line connecting the chromaticity point E and a white point in the chromaticity division and a second line including the white point and perpendicular to the first line are defined, the output signal is a dynamic output signal in which the light color changes to move periodically and continuously between the chromaticity point E and another chromaticity point F located in a region on the opposite side to the chromaticity point E side when the first region, the second region, and the third region are divided in half by the second line.

[0078] According to this, since the chromaticity points E and F can be set across one or more regions, the distance between the chromaticity points E and F can be made larger than, for example, when chromaticity points are set in each of two adjacent regions. Since the color of the light irradiated onto the illumination surface by each of the multiple lighting devices 10 changes between the chromaticity points E and F, people can better recognize the change in the color of the light. Therefore, by people recognizing the change in the color of the light, it is possible to better influence people's emotions in terms of the attractiveness and invitingness.

[0079] Furthermore, the lighting control system 1 in the fourth technique of the present embodiment is the lighting control system 1 described in any one of Techniques 1 to 3. In this case, the control signal includes an output signal that changes the light output of each of the multiple lighting devices 10 individually.

[0080] According to this, the light output of the multiple lighting devices 10 can also be changed over time, so that the light output and the color of the light can be changed individually. This makes it easier for people to recognize the change in the light irradiated onto the irradiated surface. As a result, people are motivated to move, wander, or stay in response to the change.

[0081] Furthermore, the lighting control system 1 in the fifth technique of the present embodiment is the lighting control system 1 according to any one of techniques 1 to 4. In this case, at least two of the phases in the control signals output to the multiple lighting devices 10 are different from each other.

[0082] For example, in Fig. 8, it is possible to create a lighting effect in which light flows from one side to the other, or from the other side to one side. This is expected to encourage people to wander around a specific area or to guide people.

[0083] Furthermore, each of the lighting devices 10 emits dynamic light that repeatedly increases and decreases in a predetermined cycle so that the light output and color of the light change based on the control signal. Therefore, the light output and color of the light are repeatedly increased and decreased in a predetermined cycle and irradiated onto the irradiated surface. This is expected to draw people's attention to the light irradiated onto the irradiated surface, thereby increasing the attention and guidance of the light to people.

[0084] Furthermore, the lighting control system 1 in the sixth technique of the present embodiment is the lighting control system 1 described in any one of Techniques 1 to 5. In this case, the control unit 20 can change the light color pattern set in each of the multiple lighting devices 10 to another light color pattern.

[0085] This allows the light color pattern to be changed according to the purpose of the stage lighting, which is expected to attract people, make them move around, or disperse them.

[0086] (Other variations, etc.) Although the present disclosure has been described above based on the embodiments, the present disclosure is not limited to these embodiments.

[0087] For example, the control unit included in the lighting control system in the present embodiment is typically realized as an LSI, which is an integrated circuit. These may be implemented as individual chips, or may be implemented as a single chip that includes some or all of the components.

[0088] The integrated circuit is not limited to an LSI, but may be realized by a dedicated circuit or a general-purpose processor. A field programmable gate array (FPGA) that can be programmed after the LSI is manufactured, or a reconfigurable processor that can reconfigure the connections and settings of the circuit cells inside the LSI may also be used.

[0089] 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 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.

[0090] Furthermore, all the numbers used above are merely examples for the purpose of specifically explaining the present disclosure, and the embodiments of the present disclosure are not limited to the numbers exemplified.

[0091] In addition, the division of functional blocks in the block diagram is an example, and multiple functional blocks may be realized as one functional block, one functional block may be divided into multiple blocks, or some functions may be transferred to another functional block. Furthermore, the functions of multiple functional blocks having similar functions may be processed in parallel or in a time-sharing manner by a single piece of hardware or software.

[0092] In addition, the present disclosure also includes forms obtained by applying various modifications to the embodiments that a person skilled in the art may think of, and forms realized by arbitrarily combining the components and functions of the embodiments within the scope that does not deviate from the spirit of the present disclosure. [Explanation of symbols]

[0093] 1. Lighting control system 10 Lighting device (light source section) 10a 1st lighting device (light source section) 10b 2nd lighting device (light source section) 10c Third lighting device (light source section) 10d 4th lighting device (light source section) 10e 5th lighting device (light source section) 20 Control section

Claims

1. A plurality of light source units; A control unit that generates and transmits a control signal for the light source unit, the control unit outputs a control signal capable of controlling each of the plurality of light source units so that light is irradiated onto a plurality of portions of an irradiation surface; Each of the control signals is an output signal for individually changing the color of light from each of the plurality of light source units in a chromaticity range defined in "JIS Z 8110-1995" and including a first region indicating a "white" color range and an annular second region indicating a plurality of color ranges adjacent to the first region, When changing the color of light emitted from each of the plurality of light source units, the output signal is a dynamic output signal that changes the light color so as to periodically and continuously move between a chromaticity point A located in a third region that is 5-steps or more away from the first region and the second region by a MacAdam ellipse, and a chromaticity point B located in a region other than the first region and the second region and 13-steps or more away from the chromaticity point A by a MacAdam ellipse. Lighting control system.

2. A plurality of light source units; A control unit that generates and transmits a control signal for the light source unit, the control unit outputs a control signal capable of controlling each of the plurality of light source units so that light is irradiated onto a plurality of portions of an irradiation surface; Each of the control signals is a dynamic output signal that changes the light color so as to periodically and continuously move between a chromaticity point C located within the first region, the second region, and the third region, and another chromaticity point D located within a region other than the first region and the second region in the chromaticity division, in a chromaticity division that is defined in "JIS Z 8110-1995" and is configured with a first region indicating a "white" color division, a ring-shaped second region indicating a plurality of color divisions adjacent to the first region, a ring-shaped third region indicating a color division adjacent to the second region and being separated from the second region by 5-steps of a MacAdam ellipse, a ring-shaped fourth region indicating a plurality of color divisions adjacent to the third region, and a ring-shaped fifth region indicating a plurality of color divisions adjacent to the fourth region, The chromaticity point C and the chromaticity point D are located outside the regions adjacent to each other in the first region, the second region, the third region, the fourth region, and the fifth region. Lighting control system.

3. When a chromaticity point E located in a region other than the first region and the second region is present in the third region or a fourth region that is a region adjacent to the third region, when a first line connecting the chromaticity point E and a white point in the chromaticity division and a second line including the white point and perpendicular to the first line are defined, the output signal is a dynamic output signal in which the light color changes so as to move periodically and continuously between the chromaticity point E and another chromaticity point F located in a region on the opposite side to the chromaticity point E side when the first region, the second region, and the third region are divided in half by the second line.

3. A lighting control system according to claim 1 or 2.

4. The control signal includes an output signal for individually changing the light output of each of the plurality of light source units.

3. A lighting control system according to claim 1 or 2.

5. At least two of the control signals output to the plurality of light source units have different phases.

3. A lighting control system according to claim 1 or 2.

6. The control unit is capable of changing the light color pattern set for each of the plurality of light source units to another light color pattern.

3. A lighting control system according to claim 1 or 2.

Images