Illumination system

Abstract

To provide an illumination system that enables easy understanding of a light control effect of an illumination device whose light control is targeted.SOLUTION: An illumination system includes a plurality of illumination devices having a light control function. The illumination device has a first mode in which all the illumination devices are not a light control target and a second mode in which another illumination device is the light control target. In the second mode, control is conducted to generate a light control state different from that in the first mode.SELECTED DRAWING: Figure 18A

Description

[Technical field]

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

[0002] Conventionally, there are lighting fixtures that combine a light source such as an LED with a thin lens engraved with a prism pattern, and change the light distribution angle by changing the distance between the light source and the thin lens. For example, a lighting fixture has been disclosed in which the front of a transparent light bulb is covered with a liquid crystal dimming element, and the transmittance of the liquid crystal layer is changed to switch between direct light and scattered light (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2-65001 Summary of the Invention [Problem to be solved by the invention]

[0004] In a lighting system using multiple lighting devices with various dimming functions including light distribution angle, emission intensity, emission color (white balance), etc., when dimming control is performed on each lighting device individually, light emitted by lighting devices that are not subject to dimming control may interfere with each other, making it difficult to grasp the dimming control effect of the lighting devices that are subject to dimming control.

[0005] An object of the present invention is to provide a lighting system that makes it easy to grasp the effect of dimming control of a lighting device that is the target of dimming control. [Means for solving the problem]

[0006] A lighting system according to one aspect of the present disclosure is a lighting system including a plurality of lighting devices each having a dimming function, the lighting devices having a first mode in which none of the plurality of lighting devices are subject to dimming control, and a second mode in which the other lighting devices are subject to dimming control, and in the second mode, the lighting devices are controlled to a dimming state different from that in the first mode.

[0007] A lighting system according to one aspect of the present disclosure is a lighting system including a plurality of lighting devices each having a dimming function, and further comprising a control device that performs dimming control of the plurality of lighting devices, the lighting devices having a first mode in which none of the plurality of lighting devices are subject to dimming control, and a second mode in which the other lighting devices are subject to dimming control, and are turned on in the first mode, and when the control device performs dimming control of at least one of the plurality of lighting devices as a dimming control target, a dimming control period in which the dimming control is performed and a turn-off period in which the lighting device subject to the dimming control is turned off are repeated at predetermined intervals.

[0008] A lighting system according to one aspect of the present disclosure is a lighting system including a plurality of lighting devices each having a dimming function, and further comprising a control device that performs dimming control of the plurality of lighting devices, the lighting devices having a first mode in which none of the plurality of lighting devices are subject to dimming control, and a second mode in which the other lighting devices are subject to dimming control, and are turned on in the first mode, and when the control device performs dimming control of at least one of the plurality of lighting devices as a dimming control target, a dimming control period in which the dimming control is performed and a dimming period in which the lighting device subject to dimming control is dimmed more than the dimming control period are repeated at predetermined intervals.

[0009] A lighting system according to one aspect of the present disclosure is a lighting system including a plurality of lighting devices each having a dimming function, and further comprising a control device that performs dimming control of the plurality of lighting devices, the lighting devices having a first mode in which none of the plurality of lighting devices are subject to dimming control, and a second mode in which the other lighting devices are subject to dimming control, and the lighting devices are turned on in a first light color in the first mode, and when the control device performs dimming control of at least one of the plurality of lighting devices as a dimming control target, the control device turns on the lighting device in a second light color different from the first light color. [Brief description of the drawings]

[0010] [Figure 1A] FIG. 1A is a side view illustrating an example of a lighting device according to an embodiment. [Figure 1B] FIG. 1B is a perspective view illustrating an example of a light distribution device according to an embodiment. [Diagram 2] FIG. 2 is a schematic plan view of the first substrate as viewed from the Dz direction. [Diagram 3] FIG. 3 is a schematic plan view of the second substrate as viewed from the Dz direction. [Figure 4] FIG. 4 is a perspective view of a liquid crystal cell in which a first substrate and a second substrate are overlapped in the Dz direction. [Diagram 5] FIG. 5 is a cross-sectional view taken along line AA' shown in FIG. [Figure 6A] FIG. 6A is a diagram showing the rubbing direction of the alignment film of the first substrate. [Figure 6B] FIG. 6B is a diagram showing the rubbing direction of the alignment film of the second substrate. [Figure 7] FIG. 7 is a conceptual diagram for conceptually explaining the light distribution angle of the lighting device according to the embodiment. [Figure 8] FIG. 8 is a schematic diagram illustrating an example of the configuration of a lighting system according to an embodiment. [Figure 9] FIG. 9 is an external view illustrating an example of the control device according to the embodiment. [Figure 10] FIG. 10 is a conceptual diagram showing an example of a detection area in a touch sensor. [Figure 11] FIG. 11 is a diagram illustrating an example of a control block configuration of the control device according to the embodiment. [Figure 12] FIG. 12 is a conceptual diagram showing an example of a method for adjusting light adjustment control data in the embodiment. [Figure 13A] FIG. 13A is a conceptual diagram showing a first display mode for adjusting the light distribution angle in the control device according to the embodiment. [Figure 13B] FIG. 13B is a conceptual diagram showing a second display mode for adjusting the light distribution angle in the control device according to the embodiment. [Figure 13C] FIG. 13C is a conceptual diagram showing a display form for adjusting the emission intensity in the control device according to the embodiment. [Figure 14] FIG. 14 is a diagram illustrating an example of a control block configuration of a lighting device according to an embodiment. [Figure 15] FIG. 15 is a flowchart illustrating an example of a dimming control process in the control device according to the embodiment. [Figure 16] FIG. 16 is a flowchart showing an example of a dimming control process in the lighting device according to the embodiment. [Figure 17A] FIG. 17A is a conceptual diagram illustrating the operation of each lighting device in the dimming control of the lighting system according to the embodiment. [Figure 17B] FIG. 17B is a conceptual diagram illustrating the operation of each lighting device in the dimming control of the lighting system according to the embodiment. [Figure 17C] FIG. 17C is a conceptual diagram illustrating the operation of each lighting device in the dimming control of the lighting system according to the embodiment. [Figure 18A] FIG. 18A is a diagram illustrating an example of a dimming auxiliary control state of the lighting system according to the embodiment. [Figure 18B] FIG. 18B is a diagram illustrating an example of a dimming auxiliary control state of the lighting system according to the embodiment. [Figure 18C] FIG. 18C is a diagram illustrating an example of a dimming auxiliary control state of the lighting system according to the embodiment. [Figure 18D]FIG. 18D is a diagram illustrating an example of a dimming auxiliary control state of the lighting system according to the embodiment. [Figure 18E] FIG. 18E is a diagram illustrating an example of a dimming auxiliary control state of the lighting system according to the embodiment. [Figure 18F] FIG. 18F is a diagram illustrating an example of a dimming auxiliary control state of the lighting system according to the embodiment. [Figure 19] FIG. 19 is a flowchart illustrating an example of a dimming control process in the control device according to the first modification of the embodiment. [Figure 20A] FIG. 20A is a conceptual diagram illustrating the operation of each lighting device in dimming control of a lighting system according to a second modification of the embodiment. [Figure 20B] FIG. 20B is a conceptual diagram illustrating the operation of each lighting device in the dimming control of the lighting system according to the second modification of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] The form (embodiment) for carrying out the invention will be described in detail with reference to the drawings. The present invention is not limited to the contents described in the following embodiment. The components described below include those that a person skilled in the art can easily imagine and those that are substantially the same. Furthermore, the components described below can be appropriately combined. Note that the disclosure is merely an example, and those that a person skilled in the art can easily imagine appropriate modifications while maintaining the gist of the invention are naturally included in the scope of the present invention. In addition, in order to make the explanation clearer, the drawings may be schematic in terms of the width, thickness, shape, etc. of each part compared to the actual embodiment, but they are merely examples and do not limit the interpretation of the present invention. In addition, in this specification and each figure, elements similar to those described above with respect to the previous figures may be given the same reference numerals, and detailed explanations may be omitted as appropriate.

[0012] 1A is a side view showing an example of a lighting device according to an embodiment. The lighting device 1 according to the embodiment is a lighting fixture having a so-called dimming function. As shown in FIG. 1A, the lighting device 1 includes a light source 4, a reflector 4a, and a light distribution device 100.

[0013] The light source 4 is, for example, a light emitting diode (LED). In the present disclosure, the light source 4 is configured to be capable of adjusting the intensity of light emitted by the lighting device 1 (hereinafter, also referred to as "emission intensity"). The reflector 4a is a component that collects the light of the light source 4 onto the light distribution device 100.

[0014] The light source 4 may also be configured to include LEDs of three colors, for example, red (R), green (G), and blue (B). The light source 4 may be configured to be capable of adjusting the white balance and emission color of the light emitted by the lighting device 1.

[0015] Fig. 1B is a perspective view showing an example of a light distribution device according to an embodiment. As shown in Fig. 1B, the light distribution device 100 includes a first liquid crystal cell 2 and a second liquid crystal cell 3. In the present disclosure, the light distribution device 100 is configured to be capable of adjusting the light distribution angle of light emitted by the lighting device 1.

[0016] In Fig. 1B, the Dz direction indicates the irradiation direction of light from the light source 4 and the reflector 4a. The light distribution device 100 is configured by stacking a first liquid crystal cell 2 and a second liquid crystal cell 3 in the Dz direction. In Fig. 1, one direction of a plane parallel to the stacking surface of the first liquid crystal cell 2 and the second liquid crystal cell 3 perpendicular to the Dz direction is set as the Dx direction, and a direction perpendicular to both the Dx direction and the Dz direction is set as the Dy direction.

[0017] The first liquid crystal cell 2 and the second liquid crystal cell 3 have the same configuration. In this embodiment, the first liquid crystal cell 2 is a liquid crystal cell for p-wave polarization. The second liquid crystal cell 3 is a liquid crystal cell for s-wave polarization. Note that the first liquid crystal cell 2 may be a liquid crystal cell for s-wave polarization, and the second liquid crystal cell 3 may be a liquid crystal cell for p-wave polarization. It is sufficient that either the first liquid crystal cell 2 or the second liquid crystal cell 3 is a liquid crystal cell for p-wave polarization, and the other is a liquid crystal cell for s-wave polarization.

[0018] The first liquid crystal cell 2 and the second liquid crystal cell 3 each include a first substrate 5 and a second substrate 6. Fig. 2 is a schematic plan view of the first substrate as viewed from the Dz direction. Fig. 3 is a schematic plan view of the second substrate as viewed from the Dz direction. Fig. 4 is a perspective view of a liquid crystal cell in which the first substrate and the second substrate are overlapped in the Dz direction. Fig. 5 is a cross-sectional view taken along the line A-A' shown in Fig. 4.

[0019] As shown in FIG. 5, the first liquid crystal cell 2 and the second liquid crystal cell 3 include a liquid crystal layer 8 between a first substrate 5 and a second substrate 6, the periphery of which is sealed with a sealant .

[0020] The liquid crystal layer 8 modulates light passing through the liquid crystal layer 8 according to the state of the electric field. The liquid crystal layer 8 may be, for example, a horizontal electric field mode such as FFS (fringe field switching), which is a form of IPS (in-plane switching), or may use a vertical electric field mode. For example, liquid crystals of various modes such as TN (Twisted Nematic), VA (Vertical Alignment), ECB (Electrically Controlled Birefringence), etc. may be used, and are not limited by the type or configuration of the liquid crystal layer 8.

[0021] As shown in FIG. 2, the liquid crystal layer 8 side of the base material 9 of the first substrate 5 shown in FIG. 5 includes a plurality of driving electrodes 10a, 10b, a plurality of metal wirings 11a, 11b for supplying a driving voltage to these driving electrodes 10, and a plurality of metal wirings 11c, 11d for supplying a driving voltage to a plurality of driving electrodes 13a, 13b (see FIG. 3) provided on the second substrate 6 described later. The metal wirings 11a, 11b, 11c, 11d are provided in the wiring layer of the first substrate 5. The metal wirings 11a, 11b, 11c, 11d are provided at intervals in the wiring layer on the first substrate 5. Hereinafter, the plurality of driving electrodes 10a, 10b may be simply referred to as "driving electrodes 10". The plurality of metal wirings 11a, 11b, 11c, 11d may be referred to as "first metal wirings 11". As shown in FIG. 2, the driving electrodes 10 on the first substrate 5 extend in the Dx direction.

[0022] As shown in FIG. 3, the liquid crystal layer 8 side of the base material 12 of the second substrate 6 shown in FIG. 5 includes a plurality of drive electrodes 13a, 13b and a plurality of metal wirings 14a, 14b for supplying a drive voltage to be applied to these drive electrodes 13. The metal wirings 14a, 14b are provided in the wiring layer of the second substrate 6. The metal wirings 14a, 14b are provided at intervals in the wiring layer on the second substrate 6. Hereinafter, the plurality of drive electrodes 13a, 13b may be simply referred to as "drive electrodes 13". The plurality of metal wirings 14a, 14b may be referred to as "second metal wirings 14". As shown in FIG. 3, the drive electrodes 13 on the second substrate 6 extend in the Dy direction.

[0023] The driving electrodes 10 and 13 are translucent electrodes formed of a translucent conductive material (translucent conductive oxide) such as ITO (Indium Tin Oxide). The first substrate 5 and the second substrate 6 are translucent substrates such as glass and resin. The first metal wiring 11 and the second metal wiring 14 are formed of at least one metal material selected from aluminum (Al), copper (Cu), silver (Ag), molybdenum (Mo), and alloys thereof. The first metal wiring 11 and the second metal wiring 14 may be a laminated body in which one or more of these metal materials are used and a plurality of layers are laminated. At least one metal material selected from aluminum (Al), copper (Cu), silver (Ag), molybdenum (Mo), and alloys thereof has a lower resistance than a translucent conductive oxide such as ITO.

[0024] Metal wiring 11a of first substrate 5 and metal wiring 14a of second substrate 6 are connected by conductive portion 15a such as a via. Metal wiring 11d of first substrate 5 and metal wiring 14b of second substrate 6 are connected by conductive portion 15b such as a via.

[0025] Furthermore, in an area on the first substrate 5 that does not overlap with the second substrate 6 in the Dz direction, flex-on-board terminal portions 16a and 16b are provided to be connected to a flexible printed circuit (FPC: Flexible Printed Circuits), not shown. The connection terminal portions 16a and 16b each include four connection terminals corresponding to the metal wirings 11a, 11b, 11c, and 11d.

[0026] The connection terminal portions 16a, 16b are provided on the wiring layer of the first substrate 5. The first liquid crystal cell 2 and the second liquid crystal cell 3 are supplied with driving voltages to be applied to the driving electrodes 10a, 10b on the first substrate 5 and the driving electrodes 13a, 13b on the second substrate 6 from the FPC connected to the connection terminal portion 16a or the connection terminal portion 16b. Hereinafter, the connection terminal portions 16a, 16b may be simply referred to as "connection terminal portions 16."

[0027] As shown in FIG. 4, the first liquid crystal cell 2 and the second liquid crystal cell 3 are arranged such that the first substrate 5 and the second substrate 6 overlap in the Dz direction (light irradiation direction), and the multiple drive electrodes 10 on the first substrate 5 and the multiple drive electrodes 13 on the second substrate 6 intersect when viewed from the Dz direction. In the first liquid crystal cell 2 and the second liquid crystal cell 3 configured in this manner, the alignment direction of the liquid crystal molecules 17 in the liquid crystal layer 8 can be controlled by supplying drive voltages to the multiple drive electrodes 10 on the first substrate 5 and the multiple drive electrodes 13 on the second substrate 6, respectively. The region in which the alignment direction of the liquid crystal molecules 17 in the liquid crystal layer 8 can be controlled is called the "dimming region AA." In the dimming region AA, the refractive index distribution of the liquid crystal layer 8 changes, and thus the light passing through the dimming region AA of the first liquid crystal cell 2 and the second liquid crystal cell 3 can be controlled. In the region outside the dimming region AA, the region in which the liquid crystal layer 8 is sealed with the sealant 7 is called the "peripheral region GA" (see FIG. 5).

[0028] As shown in Fig. 5, in the light control region of the first substrate 5, the driving electrode 10 (driving electrode 10a in Fig. 5) is covered with an alignment film 18. In addition, in the light control region of the second substrate 6, the driving electrode 13 (driving electrodes 13a and 13b in Fig. 5) is covered with an alignment film 19. The rubbing directions of the alignment films 18 and 19 are different.

[0029] Fig. 6A is a diagram showing the rubbing direction of the alignment film of the first substrate, and Fig. 6B is a diagram showing the rubbing direction of the alignment film of the second substrate.

[0030] As shown in Figures 6A and 6B, the rubbing direction of the alignment film 18 of the first substrate and the rubbing direction of the alignment film 19 of the second substrate intersect with each other in a plan view. Specifically, the rubbing direction of the alignment film 18 of the first substrate 5 shown in Figure 6A is perpendicular to the extension direction of the drive electrodes 10a and 10b. Moreover, the rubbing direction of the alignment film 19 of the second substrate 6 shown in Figure 6B is perpendicular to the extension direction of the drive electrodes 13a and 13b.

[0031] In this embodiment, a configuration in which one each of the first liquid crystal cell 2 and the second liquid crystal cell 3 is laminated has been described, but the present invention is not limited to this configuration, and may be, for example, a configuration having a plurality of combinations in which the first liquid crystal cell 2 and the second liquid crystal cell 3 are laminated. For example, a configuration may be provided in which two combinations in which the first liquid crystal cell 2 and the second liquid crystal cell 3 are laminated, that is, a configuration in which two each of liquid crystal cells for p-wave polarization and liquid crystal cells for s-wave polarization are included.

[0032] In the present disclosure, in the lighting device 1 configured as described above, the light distribution angle of light emitted from the light source 4 is controlled by controlling the drive voltages of the first liquid crystal cell 2 and the second liquid crystal cell 3. Hereinafter, the light distribution angle of the lighting device 1, which is one of the control parameters in the present disclosure, will be described with reference to FIG.

[0033] Fig. 7 is a conceptual diagram for conceptually explaining the light distribution angle of the lighting device according to the embodiment. In Fig. 7, the lighting device 1 is regarded as a point light source A, and the light irradiation range on a virtual plane xy perpendicular to the Dz direction is shown. Note that Fig. 7 shows an example in which the lighting device 1 is regarded as a point light source A, but in reality, as described above, the configuration controls the light transmitted through the dimming area AA of the first liquid crystal cell 2 and the second liquid crystal cell 3, so the illuminance of the light decreases around the irradiation range. In addition, the outline of the irradiation range becomes unclear due to the light diffraction phenomenon, etc.

[0034] As described above, in the first liquid crystal cell 2 and the second liquid crystal cell 3, the alignment direction of the liquid crystal molecules 17 in the liquid crystal layer 8 is controlled by supplying drive voltages to the plurality of drive electrodes 10 on the first substrate 5 and the plurality of drive electrodes 13 on the second substrate 6, respectively. This makes it possible to control the light distribution angle of the light emitted from the lighting device 1.

[0035] Specifically, for example, the orientation direction of the liquid crystal molecules 17 in the liquid crystal layer 8 of the first liquid crystal cell 2 changes depending on the drive voltage applied to the drive electrodes 10 and 13 of the first liquid crystal cell 2, and the light distribution angle in the Dx direction changes. In the present disclosure, the minimum light distribution angle in the Dx direction is set to 0[%], and the maximum light distribution angle in the Dx direction is set to 100[%].

[0036] Furthermore, for example, the alignment direction of the liquid crystal molecules 17 in the liquid crystal layer 8 of the second liquid crystal cell 3 changes depending on the drive voltage applied to the drive electrodes 10 and 13 of the second liquid crystal cell 3, and the light distribution angle in the Dy direction changes. In the present disclosure, the minimum light distribution angle in the Dy direction is set to 0[%], and the maximum light distribution angle in the Dy direction is set to 100[%].

[0037] 7A illustrates an example of an illumination range when the light distribution angle in the Dx direction and the light distribution angle in the Dy direction are both 100[%]. Also, FIG. 7B illustrates an example of an illumination range when the light distribution angle in the Dx direction is 100[%] and the light distribution angle in the Dy direction is 30[%]. FIG. 7C illustrates an example of an illumination range when the light distribution angle in the Dx direction is 30[%] and the light distribution angle in the Dy direction is 100[%]. Also, FIG. 7D illustrates an example of an illumination range when the light distribution angle in the Dx direction and the light distribution angle in the Dy direction are both 30[%].

[0038] In this way, in the lighting device 1 configured as described above, the light distribution angles in the Dx direction and the Dy direction can be controlled by controlling the drive voltages of the first liquid crystal cell 2 and the second liquid crystal cell 3, respectively, thereby allowing the illumination range of the light of the lighting device 1 to be changed.

[0039] Fig. 8 is a schematic diagram showing an example of the configuration of a lighting system according to an embodiment. The lighting system includes a plurality of lighting devices 1 having a dimming function and a control device 200. The control device 200 is exemplified by a mobile communication terminal device such as a smartphone or a tablet. Fig. 8 shows an example in which a plurality of lighting devices 1_1, 1_2, ..., 1_6 are arranged in the same space.

[0040] Data and various command signals are transmitted and received between the multiple lighting devices 1 (1_1, 1_2,..., 1_6) and the control device 200 via communication means 300. In the present disclosure, the communication means 300 is, for example, wireless communication means such as Bluetooth (registered trademark) or WiFi (registered trademark). The lighting devices 1 and the control device 200 may perform wireless communication via a predetermined network such as a mobile communication network. Alternatively, the lighting devices 1 and the control device 200 may be connected by wire and perform wired communication. The present disclosure is not limited by the number of lighting devices 1 included in the lighting system.

[0041] In the present disclosure, examples of the control parameters by the control device 200 include the emission intensity, white balance, emission color, and light distribution angle of the lighting device 1. Hereinafter, control for adjusting the control parameters of the lighting device 1, such as the emission intensity, white balance, emission color, and light distribution angle, will be collectively referred to as "dimming control."

[0042] FIG. 9 is an external view showing an example of a control device according to an embodiment. The control device 200 is a display device with a touch detection function in which a display panel 20 and a touch sensor 30 are integrated. Specifically, the display panel 20 is a so-called in-cell type or hybrid type device in which the touch sensor 30 is built in and integrated. The incorporation of the touch sensor 30 in the display panel 20 includes, for example, sharing some of the members such as a substrate and electrodes used as the display panel 20 with some of the members such as a substrate and electrodes used as the touch sensor 30. The display panel 20 may be a so-called on-cell type device in which the touch sensor 30 is mounted on the display device.

[0043] The display panel 20 may be, for example, a liquid crystal display panel using a liquid crystal display element, but is not limited thereto, and may be, for example, an organic EL display panel (OLED: Organic Light Emitting Diode) or an inorganic EL display panel (micro LED, mini LED).

[0044] The touch sensor 30 is, for example, a capacitive touch sensor, but is not limited thereto, and may be, for example, a resistive film touch sensor, an ultrasonic touch sensor, or an optical touch sensor.

[0045] 10 is a conceptual diagram showing an example of a detection area in a touch sensor. A plurality of detection elements 31 are provided in the detection area FA of the touch sensor 30. The plurality of detection elements 31 are arranged in a matrix in the detection area FA of the touch sensor 30, aligned in the X direction (first direction) and the Y direction (second direction) perpendicular to the X direction. In other words, the touch sensor 30 has a detection area FA that overlaps with the plurality of detection elements 31 aligned in the X direction (first direction) and the Y direction (second direction).

[0046] FIG. 11 is a diagram illustrating an example of a control block configuration of the control device according to the embodiment.

[0047] 11, the control device 200 according to the embodiment includes a detection device 210 and a processing device 220. The detection device 210 includes a touch sensor 30, a detection unit 211, and a coordinate extraction unit 212. The processing device 220 includes a dimming control data generation unit 221 and a storage unit 223. The detection unit 211 and the coordinate extraction unit 212 of the detection device 210 are configured, for example, by a detection IC. The processing device 220 is configured, for example, by a CPU (Central Processing Unit), a RAM (Random Access Memory), an EEPROM (Electrically Erasable Programmable Read Only Memory), a ROM (Read Only Memory), and the like of a smartphone or tablet that configures the control device 200.

[0048] The detection unit 211 is a circuit that detects whether or not the touch sensor 30 is touched, based on a detection signal output from each detection element 31 of the touch sensor 30 .

[0049] The coordinate extraction unit 212 is a logic circuit that, when a touch is detected by the detection unit 211, determines the coordinates of the touch detection position.

[0050] The dimming control data generating unit 221 generates dimming control data based on the touch detection position extracted by the coordinate extracting unit 212. The dimming control data generating unit 221 is a component realized by, for example, a CPU of a smartphone, a tablet, or the like constituting the control device 200.

[0051] The storage unit 223 is configured, for example, with a RAM, an EEPROM, a ROM, or the like of a smartphone, tablet, or the like constituting the control device 200. In the present disclosure, the storage unit 223 stores, for example, dimming control data corresponding to the coordinates of the touch detection position extracted by the coordinate extraction unit 212.

[0052] Fig. 12 is a conceptual diagram showing an example of a method for adjusting dimming control data in the embodiment. In Fig. 12, a method for adjusting the light distribution angle, which is one of the control parameters of the lighting device 1, will be described.

[0053] 12, a data adjustment area TA is provided within a detection area FA of the touch sensor 30. The horizontal axis of the data adjustment area TA indicates the coordinate axis in the X direction (first direction) and corresponds to the Dx direction in the lighting device 1. The vertical axis of the data adjustment area TA indicates the coordinate axis in the Y direction (second direction) and corresponds to the Dy direction in the lighting device 1. The data adjustment area TA only needs to be provided within the detection area FA of the touch sensor 30, and an embodiment in which the entire detection area FA is the data adjustment area TA may be used.

[0054] In this embodiment, the light distribution angle data in the X direction and the light distribution angle data in the Y direction are discrete values ​​obtained by normalizing information on the light distribution angle controlled in the lighting device 1. That is, in this embodiment, the dimming control data generator 221 generates the light distribution angle data R(Rx, Ry) using the information on the light distribution angle controlled in the lighting device 1 as a control parameter in the control device 200.

[0055] The light distribution angle data Rx in the X direction and the light distribution angle data Ry in the Y direction are defined to have values ​​corresponding to the coordinates of the touch detection position detected in the data adjustment area TA. In the example shown in Fig. 12, the light distribution angle data Rx in the X direction and the light distribution angle data Ry in the Y direction can each take a value from "0" to "100". The circle shown by the dashed line in Fig. 12 indicates the locus of coordinates of the position where the light distribution angle data Rx in the X direction is "30" and the light distribution angle data Ry in the Y direction is "30", the circle shown by the solid line indicates the locus of coordinates of the position where the light distribution angle data Rx in the X direction is "100" and the light distribution angle data Ry in the Y direction is "100", and the ellipse shown by the solid line indicates the locus of coordinates of the position where the light distribution angle data Rx in the X direction is "80" and the light distribution angle data Ry in the Y direction is "50".

[0056] 12 shows an example in which the coordinates of the touch detection position are moved from position A to position B in the data adjustment area TA by the coordinate extraction unit 212. In this case, the dimming control data generation unit 221 generates light distribution angle data R (Rx, Ry) corresponding to the coordinates (x, y) of the touch detection position output from the coordinate extraction unit 212 in a time series while the coordinates of the touch detection position are moved from position A to position B in the data adjustment area TA. Specifically, the relationship between a one-step change ΔR (ΔRx, ΔRy) in the light distribution angle data R (Rx, Ry) and a one-step change (Δx, Δy) in the coordinates (x, y) of the touch detection position is expressed by the following formulas (1) and (2). k is a coefficient determined by the number of detection elements 31 in the data adjustment area TA.

[0057] ΔRx = k × Δx (1)

[0058] ΔRy = k × Δy (2)

[0059] Specifically, for example, if k=4, when the coordinates of the touch detection position move by 4, the light distribution angle data changes by one step. In other words, the amount of change in the light distribution angle data R (Rx, Ry) is proportional to the amount of movement of the coordinates (x, y) of the touch detection position.

[0060] In the present disclosure, the dimming control of each control parameter of the plurality of lighting devices 1 is executed between the control device 200 and each lighting device 1. The control device 200 sequentially transmits the light distribution angle data R(Rx, Ry) generated by the dimming control data generator 221 to the lighting devices 1 that are targets of the dimming control.

[0061] Fig. 13A is a conceptual diagram showing a first display mode for adjusting the light distribution angle in the control device according to the embodiment. Fig. 13B is a conceptual diagram showing a second display mode for adjusting the light distribution angle in the control device according to the embodiment.

[0062] The display panel 20 is provided with a display area DA that overlaps with the detection area FA of the touch sensor 30 shown in Fig. 9 in a plan view. As shown in Fig. 13A and Fig. 13B, for example, in an area outside the data adjustment area TA in the display area DA (in the example shown in Fig. 13A and Fig. 13B, an area above the data adjustment area TA) is provided with a control target selection icon 21 for selecting a lighting device 1 to be a dimming control target of the control device 200 from among the multiple lighting devices 1_1, 1_2, ..., 1_6. By tapping the control target selection icon 21, it is possible to select a lighting device 1 to be a dimming control target from among the multiple lighting devices 1_1, 1_2, ..., 1_6.

[0063] 13A shows an aspect in which a locus of coordinates of positions corresponding to light distribution angle data R (Rx, Ry) on data adjustment area TA is displayed as schematic shape image 23 of the irradiation range. In this first display aspect, for example, by tapping position A on schematic shape image 23 of the irradiation range and swiping to position B, the light distribution angle in the X direction and the light distribution angle in the Y direction of lighting device 1 that is the target of dimming control are simultaneously adjusted.

[0064] 13B shows an aspect in which slide bar 24a for adjusting the light distribution angle in the X direction and slide bar 24b for adjusting the light distribution angle in the Y direction are displayed on data adjustment area TA. In this second display aspect, by tapping slide bar 24a and swiping in the X direction, the light distribution angle in the X direction of lighting device 1 that is the target of dimming control is adjusted, and by tapping slide bar 24b and swiping in the Y direction, the light distribution angle in the Y direction of lighting device 1 that is the target of dimming control is adjusted.

[0065] 13C is a conceptual diagram showing a display form for adjusting the emission intensity in the control device according to the embodiment. In FIG 13C, a method for adjusting the emission intensity, which is one of the control parameters of the lighting device 1, will be described.

[0066] 13C shows an aspect in which slide bars for adjusting the light emission intensity are displayed on the data adjustment area TA corresponding to each of the lighting devices 1_1, 1_2, ..., 1_6. In this display aspect, the light emission intensity of the lighting device 1 that is the target of dimming control is adjusted by tapping and swiping the slide bar corresponding to the lighting device 1 that is the target of dimming control.

[0067] The manner in which each control parameter such as the light distribution angle and the emission intensity is adjusted is not limited to the above-described manner, and for example, a physical slider may be provided on the control device 200.

[0068] Fig. 14 is a diagram showing an example of a control block configuration of a lighting device according to an embodiment. As shown in Fig. 14, the lighting device 1 according to the first embodiment includes a control unit 111, an electrode driving unit 112, a light source driving unit 113, and a storage unit 114 in addition to the light source 4 and light distribution device 100 described above.

[0069] The control unit 111 executes dimming control according to the dimming control data received from the control device 200. Specifically, for example, the control unit 111 controls the electrode driving unit 112 so that a driving voltage according to the light distribution angle data R (Rx, Ry) transmitted from the control device 200 is supplied to each of the driving electrodes 10, 13 of the first liquid crystal cell 2 and the second liquid crystal cell 3 of the light distribution device 100. Also, for example, the control unit 111 controls the light source driving unit 113 so that a driving current according to the emission intensity data transmitted from the control device 200 is supplied to the light source 4.

[0070] As shown in Fig. 8, for example, if multiple lighting devices 1 (1_1, 1_2,..., 1_6) are arranged in the same space and one of the multiple lighting devices 1 is set as a dimming control target, light emitted by a lighting device 1 other than the dimming control target (hereinafter also referred to as "non-dimming control target") may interfere with the light, making it difficult to understand the dimming control effect of the dimming control target lighting device 1. Hereinafter, a method for appropriately executing dimming control of a lighting device 1 set as a dimming control target in a lighting system having multiple lighting devices 1 will be described.

[0071] Fig. 15 is a flowchart showing an example of a dimming control process in the control device according to the embodiment. In the following description, an example will be described in which the lighting device 1_3 shown in Fig. 8 is set as a dimming control target, and the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 are not set as dimming control targets.

[0072] The detection unit 211 detects the presence or absence of a touch in the data adjustment area TA of the touch sensor 30 (step S101). If no touch is detected in the data adjustment area TA (step S101; No), the control device 200 repeatedly executes the process of step S101.

[0073] When a touch is detected within the data adjustment area TA (Step S101; Yes), the control device 200 transmits a dimming auxiliary control start command to the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not targets of dimming control via the communication means 300 (Step S102).

[0074] The dimming control data generating unit 221 of the control device 200 generates dimming control data corresponding to the coordinates of the touch detection position extracted by the coordinate extracting unit 212 (step S103). Specifically, the dimming control data generating unit 221 reads out, for example, light distribution angle data corresponding to the coordinates of the touch detection position extracted by the coordinate extracting unit 212 from the storage unit 223.

[0075] The control device 200 transmits the dimming control data generated by the dimming control data generating unit 221 to the lighting device 1_3 that is the target of the dimming control via the communication means 300 (Step S104).

[0076] The detection unit 211 detects whether or not a touch is continued within the data adjustment area TA of the touch sensor 30 (step S105).

[0077] If the touch within the data adjustment area TA of the touch sensor 30 continues (step S105; Yes), the process returns to step S103, and the processes from step S103 onwards are repeatedly executed.

[0078] If the touch is not continued within the data adjustment area TA (step S105; No), the control device 200 transmits a dimming auxiliary control stop command to the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not targets of dimming control via the communication means 300 (step S106). Then, the process returns to step S101, and the same process is repeatedly executed.

[0079] FIG. 16 is a flowchart showing an example of a dimming control process in the lighting device according to the embodiment.

[0080] The lighting device 1 determines whether or not it has received a dimming auxiliary control start command transmitted from the control device 200 (step S201). If it has not received the dimming auxiliary control start command (step S201; No), then the lighting device 1 determines whether or not it has received dimming control data transmitted from the control device 200 (step S202). If it has not received dimming control data (step S202; No), the process returns to step S201.

[0081] When the dimming control data is received (step S202; Yes), the control unit 111 executes dimming control according to the dimming control data (step S203).

[0082] When a dimming auxiliary control start command is received in step S201 (step S201; Yes), the control unit 111 transitions from a normal control state (first mode) in a normal light emission period to a dimming auxiliary control state (second mode) in a dimming auxiliary control period (step S204), and executes dimming auxiliary control with a predetermined light emission pattern (dimming state) (step S205).

[0083] Here, the dimming assist control according to the embodiment will be described with reference to FIGS. 17A, 17B, 17C, 18A, 18B, 18C, 18D, 18E, and 18F.

[0084] Fig. 17A, Fig. 17B, Fig. 17C are conceptual diagrams for explaining the operation of each lighting device in the dimming control of the lighting system according to the embodiment. Fig. 18A, Fig. 18B, Fig. 18C, Fig. 18D, Fig. 18E, Fig. 18F are diagrams showing an example of a dimming auxiliary control state of the lighting system according to the embodiment.

[0085] As shown in Fig. 18A, Fig. 18B, Fig. 18C, Fig. 18D, Fig. 18E, and Fig. 18F, when the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control receive a dimming auxiliary control start command transmitted from the control device 200 (step S201; Yes), they transition from the normal control state (first mode) shown in Fig. 17A to the dimming auxiliary control state (second mode). The normal control state (first mode) and the dimming auxiliary control state (second mode) have different light emission patterns (dimming states) of the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control. In this embodiment, the light emission pattern (dimming state) in the dimming auxiliary control state (second mode) is stored in the storage unit 114 in advance.

[0086] In the normal control state (first mode), the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are turned on, and in the auxiliary dimming control state (second mode), for example, as shown in Fig. 17B, the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are turned off. This makes it possible to perform dimming control of the lighting device 1_3 that is subject to dimming control without interference with light emitted by the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control, and makes it easier to grasp the dimming control effect of the lighting device 1_3 that is subject to dimming control.

[0087] The light emission pattern (dimming state) in the dimming auxiliary control state (second mode) is not limited to this, and for example, as shown in Fig. 17C, the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are dimmed. Specifically, the light emission intensity of the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control is set to a predetermined value, and the illuminance is reduced. This makes it possible to suppress the influence of interference of light emitted by the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control.

[0088] In addition, the light emission pattern (dimming state) of the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control in the dimming auxiliary control state (second mode) is not limited to being turned off or dimmed, and may be, for example, a mode in which the light emission color of the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control is changed to a light emission color (second light emission color) different from the light emission color (first light emission color) in the normal control state (first mode).

[0089] 18C, in the dimming auxiliary control state (second mode), the first state (first dimming state) and a second state (second dimming state) different from the first state (first dimming state) are switched at a predetermined interval (e.g., 0.5 [s]). Specifically, for example, in the second state (second dimming state), the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are turned on in the same manner as the light emission pattern (dimming state) in the normal control state (first mode), and the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are turned off in the first state (first dimming state). This makes it possible to perform dimming control of the lighting device 1_3 that is the subject of dimming control while alternately checking a first state (first dimming state) in which the lighting device 1_3 that is the subject of dimming control is turned on alone and a second state (second dimming state) in which the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are turned on in the same manner as in the normal control state (first mode).

[0090] Also, for example, in the second state (second dimming state), the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are turned on in the same manner as the light emission pattern (dimming state) in the normal control state (first mode), and in the first state (first dimming state), the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are dimmed more than in the second state (second dimming state). Specifically, the light emission intensity of the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control is set to a predetermined value, and the illuminance is reduced. This makes it possible to perform dimming control of lighting device 1_3 which is a dimming control target while alternately checking a first state (first dimming state) in which lighting devices 1_1, 1_2, 1_4, 1_5, 1_6 which are not subject to dimming control are dimmed more than in the normal control state (first mode) and a second state (second dimming state) in which lighting devices 1_1, 1_2, 1_4, 1_5, 1_6 which are not subject to dimming control are turned on in the same manner as in the normal control state (first mode).

[0091] 18E, the first state (first dimming state) and the second state (second dimming state) are switched in a specific pattern. Specifically, for example, the first state (first dimming state) (3 [s]), the second state (second dimming state) (0.5 [s]), the first state (first dimming state) (0.5 [s]), and the second state (second dimming state) (0.5 [s]) are repeated in one cycle (1T). This makes it easier to grasp the dimming control state of the lighting device 1_3 that is the dimming control target.

[0092] In addition, the emission color (first emission color) of the lighting devices 1_1, 1_2, 1_4, 1_5, 1_6 that are not subject to dimming control in the second state (second dimming state) may be the same as the emission color in the normal control state (first mode), and the emission color of the lighting devices 1_1, 1_2, 1_4, 1_5, 1_6 that are not subject to dimming control in the first state (first dimming state) may be changed to an emission color (second emission color) different from the emission color (first emission color) of the lighting devices 1_1, 1_2, 1_4, 1_5, 1_6 that are not subject to dimming control in the second state (second dimming state).

[0093] 16, the lighting device 1 determines whether or not it has received a dimming auxiliary control stop command transmitted from the control device 200 (step S206). If it has not received the dimming auxiliary control stop command (step S206; No), the process returns to step S201.

[0094] When the dimming auxiliary control stop command is received (step S206; Yes), the control unit 111 transitions from the dimming auxiliary control state (second mode) in the dimming auxiliary control period to the normal control state (first mode) in the normal light emission period (step S207), and returns to step S201.

[0095] In the example shown in FIG. 18A, when the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control receive a dimming auxiliary control stop command transmitted from the control device 200 (step S206; Yes), they transition from the dimming auxiliary control state (second mode) to the normal control state (first mode).

[0096] Also, as shown in FIG. 18B , for example, after a dimming auxiliary control stop command transmitted from the control device 200 is received (step S206; Yes), the dimming states of the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control may be shifted from the dimming auxiliary control state (second mode) to the normal control state (first mode) after a predetermined time (e.g., 3 [s]) has elapsed.

[0097] Also, as shown in FIG. 18D, for example, after receiving a dimming auxiliary control stop command transmitted from the control device 200 (step S206; Yes), the first state (first dimming state) and the second state (second dimming state) may be switched between multiple times within a predetermined time (e.g., 3 s), and then the dimming auxiliary control state (second mode) may be transitioned to the normal control state (first mode).

[0098] Also, as shown in FIG. 18F, for example, after receiving a dimming assist control stop command transmitted from the control device 200 (step S206; Yes), a specific pattern having one cycle (1T) of, for example, a first period (3 s), a second period (0.5 s), the first period (0.5 s), and the second period (0.5 s) may be executed, and then the dimming assist control state (second mode) may be transitioned to the normal control state (first mode).

[0099] In this way, by providing a period during which the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are maintained in the dimming auxiliary control state (second mode) after receiving a dimming auxiliary control stop command transmitted from the control device 200 (step S206; Yes), it becomes easy to check the dimming control state of the lighting device 1_3 that is subject to dimming control.

[0100] As described above, in a lighting system including a plurality of lighting devices having dimming function, when dimming control is executed on the lighting device 1 (1_3) that is the subject of dimming control, the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not the subject of dimming control can be set to a dimming auxiliary control state (second mode) that makes it easier to grasp the dimming control state of the lighting device 1_3 that is the subject of dimming control.

[0101] Specifically, in the normal control state (first mode), the lighting devices 1_1, 1_2, 1_4, 1_5, and 1_6 that are not subject to dimming control are turned on, and in the auxiliary dimming control state (second mode), the lighting devices 1 (1_1, 1_2, 1_4, 1_5, and 1_6) that are not subject to dimming control are turned off. This allows dimming control of the lighting device 1 (1_3) that is subject to dimming control to be performed without interference with light emitted by the lighting devices 1 (1_1, 1_2, 1_4, 1_5, and 1_6) that are not subject to dimming control, making it easier to grasp the dimming control effect of the lighting device 1 (1_3) that is subject to dimming control.

[0102] In addition, in the dimming auxiliary control state (second mode), the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are dimmed. Specifically, the light emission intensity of the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control is set to a predetermined value, and the illuminance is reduced. This makes it possible to suppress the influence of interference of light emitted by the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control.

[0103] In addition, in the dimming auxiliary control state (second mode), the first state (first dimming state) and the second state (second dimming state) different from the first state (first dimming state) are switched at a predetermined interval. Specifically, for example, in the second state (second dimming state), the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are turned on in the same manner as the light emission pattern (dimming state) in the normal control state (first mode), and the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are turned off in the first state (first dimming state). In other words, the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are turned off at a predetermined interval. This makes it possible to perform dimming control of the lighting device 1 (1_3) that is the subject of dimming control while alternately checking a first state (first dimming state) in which the lighting device 1 (1_3) that is the subject of dimming control is turned on alone and a second state (second dimming state) in which the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are turned on in the same manner as in the normal control state (first mode).

[0104] Also, for example, in the second state (second dimming state), the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are turned on in the same manner as the light emission pattern (dimming state) in the normal control state (first mode), and in the first state (first dimming state), the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are dimmed more than in the second state (second dimming state). In other words, the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are dimmed at predetermined intervals. This makes it possible to perform dimming control of the lighting device 1 (1_3) that is a target of dimming control while alternately checking a first state (first dimming state) in which the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are dimmed more than in the normal control state (first mode) and a second state (second dimming state) in which the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to dimming control are turned on in the same manner as in the normal control state (first mode).

[0105] In addition, in the dimming auxiliary control state (second mode), the first state (first dimming state) and the second state (second dimming state) are switched in a specific pattern. Specifically, for example, the first state (first dimming state) (3 [s]), the second state (second dimming state) (0.5 [s]), the first state (first dimming state) (0.5 [s]), and the second state (second dimming state) (0.5 [s]) are repeated in one cycle (1T). This makes it easier to grasp the dimming control state of the lighting device 1 (1_3) that is the dimming control target.

[0106] In addition, by providing a period during which the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to the dimming control are maintained in the dimming auxiliary control state (second mode) after dimming control is executed in the lighting device 1 (1_3) that is subject to the dimming control, it becomes easy to check the dimming control state of the lighting device 1 (1_3) that is subject to the dimming control.

[0107] In the above embodiment, an example has been described in which one lighting device 1 (1_3) among the multiple lighting devices 1 (1_1, 1_2, 1_3, 1_4, 1_5, 1_6) is the target of dimming control, but multiple lighting devices may be simultaneously targeted for dimming control. Even in this case, the above-mentioned dimming auxiliary control period may be provided for the lighting devices that are not the target of dimming control and that perform dimming control in the lighting devices targeted for dimming control, to set them in the dimming auxiliary control state (second mode).

[0108] (Variation 1) In the above-described embodiment, an example has been described in which the light emission pattern (dimming state) in the dimming auxiliary control state (second mode) is stored in the memory unit 114 of the lighting device 1. However, the present invention is not limited to this, and the light emission pattern (dimming state) in the dimming auxiliary control state (second mode) may be stored in the memory unit 223 of the control device 200.

[0109] Fig. 19 is a flowchart showing an example of a dimming control process in a control device according to Modification 1 of the embodiment. Here, a process different from that in Fig. 15 of the above-described embodiment will be described.

[0110] In step S101, when a touch is detected within the data adjustment area TA (step S101; Yes), the control device 200 starts dimming control of the lighting device 1 (1_3) that is the dimming control target. At this time, the control device 200 causes the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not the dimming control targets to transition to the dimming assist control state (second mode) by transmitting dimming control data (for example, a predetermined light emission intensity that realizes turning off or dimming) corresponding to the light emission pattern (dimming state) in the dimming assist control state (second mode) stored in the storage unit 223 (step S102a).

[0111] In addition, in step S105, if the touch is not continued within the data adjustment area TA (step S105; No), the control device 200 stops the dimming control of the lighting device 1 (1_3) that is the dimming control target. At this time, the control device 200 stops the transmission of dimming control data (e.g., a predetermined light emission intensity for turning off or dimming) to the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not the dimming control target, and causes the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not the dimming control target to transition from the dimming auxiliary control state (second mode) to the normal control state (first mode) by transmitting dimming control data (e.g., a predetermined light emission intensity for turning off or dimming) corresponding to the light emission pattern (dimming state) in the normal control state (first mode) (step S106a).

[0112] Alternatively, the control device 200 may stop transmitting dimming control data (e.g., a predetermined emission intensity for turning off or dimming) to the lighting devices 1 (1_1, 1_2, 1_4, 1_5, 1_6) that are not subject to the dimming control a predetermined time (e.g., 3 [s]) after stopping the dimming control of the lighting device 1 (1_3) that is subject to the dimming control, and may transmit dimming control data (e.g., a predetermined emission intensity for turning off or dimming) corresponding to the emission pattern (dimming state) in the normal control state (first mode), thereby transitioning the lighting devices from the dimming auxiliary control state (second mode) to the normal control state (first mode).

[0113] As a result, in the first modification as well, the same effects as those of the above-described embodiment can be obtained.

[0114] (Variation 2) 20A and 20B are conceptual diagrams for explaining the operation of each lighting device in the dimming control of the lighting system according to the modified example 2 of the embodiment. In Fig. 20A and Fig. 20B, an example is shown in which the lighting device 1_3 is the target of the dimming control, as in the above-described embodiment.

[0115] In the second modification of the embodiment, the control device 200 repeats a dimming control period (see FIG. 20A) during which the dimming control is performed on the lighting device 1 (1_3) that is the subject of the dimming control and a turn-off period (see FIG. 20B) during which the lighting device 1 (1_3) that is the subject of the dimming control is turned off at a predetermined interval (e.g., 0.5 [s]). This makes it easier to grasp the range of illumination by the lighting device 1 (1_3) that is the subject of the dimming control.

[0116] Note that, instead of an off-period in which the lighting device 1(1_3) subject to dimming control is turned off, a dimming period in which the lighting device 1(1_3) subject to dimming control is made less bright than the dimming control period may be provided. Alternatively, without providing an off-period in which the lighting device 1(1_3) subject to dimming control is turned off or a dimming period in which the lighting device 1(1_3) subject to dimming control is made less bright than the dimming control period, the light emission color during the dimming control period may be a light emission color (second light emission color) different from the light emission color (first light emission color) of the normal control state (first mode) during the normal light emission period.

[0117] Although the preferred embodiment of the present disclosure has been described above, the present disclosure is not limited to such an embodiment. The contents disclosed in the embodiment are merely examples, and various modifications are possible within the scope of the present disclosure. Appropriate modifications made within the scope of the present disclosure also naturally belong to the technical scope of the present disclosure. [Explanation of symbols]

[0118] 1 Lighting equipment 2. First liquid crystal cell 3. Second liquid crystal cell 4 light source 4a Reflector 5 First board 6 Second board 7. Encapsulating material 8 Liquid crystal layer 9 Base material 10, 10a, 10b Drive electrodes 11 1st metal wiring 11a,11b,11c,11d Metal wiring 12 Base material 13, 13a, 13b Drive electrodes 14 2nd metal wiring 14a, 14b Metal wiring 15a,15b Continuity part 16a, 16b Connection terminal section 17 Liquid crystal molecules 18 Alignment film 19 Orientation film 20 Display Panel 21 Control target selection icon 23. Outline of the shape (irradiation range) 24a, 24b Slide bar 30 Touch Sensor 31 Detector element 100 Light distribution device 111 Control section 112 Electrode drive unit 113 Light source driver 114 Storage section 200 Control device 210 Detection Device 211 Detection unit 212 Coordinate Extraction Unit 220 Processing equipment 221 Dimming control data generation unit 223 Storage section 300 Means of communication AA dimming area DA display area FA detection area GA Peripheral Areas TA Data Adjustment Area

Claims

1. A lighting system including a plurality of lighting devices having a dimming function, The lighting device includes: a first mode in which none of the plurality of lighting devices is subject to dimming control; a second mode in which some of the lighting devices are set as targets for dimming control; having In the second mode, the light is controlled to a dimming state different from that in the first mode, In the first mode, the light source is lit in a first light emission color, and in the second mode, the light source is lit in a second light emission color different from the first light emission color. Lighting system.

2. A lighting system including a plurality of lighting devices having a dimming function, The lighting device includes: a first mode in which none of the plurality of lighting devices is subject to dimming control; a second mode in which some of the lighting devices are set as targets for dimming control; having In the second mode, the light is controlled to a dimming state different from that in the first mode, In the second mode, the first dimming state and the second dimming state are repeated at a predetermined interval. Lighting system.

3. The lighting device is turned on in the second dimming state and turned off in the first dimming state.

3. The lighting system of claim 2.

4. The lighting device is turned on in the second dimming state and is dimmed more in the first dimming state than in the second dimming state.

3. The lighting system of claim 2.

5. The lighting device is lit in a first emission color in the second dimming state, and is lit in a second emission color different from the first emission color in the first dimming state.

3. The lighting system of claim 2.

6. A control device that performs dimming control of the plurality of lighting devices, The lighting device includes: receiving a dimming auxiliary control start command from the control device and transitioning from the first mode to the second mode; 6. A lighting system according to any one of the preceding claims.

7. The lighting device includes: receiving a dimming auxiliary control stop command from the control device and transitioning from the second mode to the first mode; 7. A lighting system according to claim 6.

8. The lighting device includes: transitioning from the second mode to the first mode after a predetermined time has elapsed since receiving a dimming auxiliary control stop command from the control device; 7. A lighting system according to claim 6.

9. A control device that performs dimming control of the plurality of lighting devices, The control device includes: when starting dimming control of at least one of the plurality of lighting devices as a dimming control target, switching the other lighting devices different from the at least one lighting device from the first mode to the second mode; 6. A lighting system according to any one of the preceding claims.

10. The control device includes: when the dimming control of the lighting device that is the dimming control target is stopped, the other lighting devices are shifted from the second mode to the first mode.

10. The lighting system of claim 9.

11. The control device includes: after a predetermined time has elapsed since the dimming control of the lighting device that is the dimming control target is stopped, the other lighting devices are shifted from the second mode to the first mode.

10. The lighting system of claim 9.

12. the lighting device is capable of controlling a light distribution angle of light emitted from a light source as the dimming function; When a lighting device that is not a target for dimming control is in the second mode, the light distribution angle of a lighting device that is a target for dimming control is controlled.

12. A lighting system according to any one of the preceding claims.

Images