Lighting system, control device, lighting fixture, and vehicle

Abstract

To provide a lighting system, a control device, a lighting fixture, and a vehicle that can wirelessly control the timing of dimming multiple lighting fixtures.SOLUTION: A lighting system according to an embodiment of the present invention includes a control device and a plurality of lighting fixtures. The control device wirelessly transmits a dimming control signal a plurality of times at a predetermined time interval. The plurality of lighting fixtures receive a dimming control signal. The dimming control signal includes transmission count information indicating the number of times the dimming control signal has been transmitted, and each of the plurality of lighting fixtures includes a light-emitting unit and a light emission timing control unit that controls the timing of emitting light from the light-emitting unit on the basis of the transmission count information.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a lighting system, a control device, a lamp, and a vehicle that can be applied to a lighting device for a railway vehicle or the like. [Background technology]

[0002] Conventionally, the multiple lighting fixtures installed on railway vehicles and the like include interior lights for illuminating the interior of the vehicle and spare lights to be used when the interior lights are not turned on, and it may be necessary to control each of these at a different dimming rate.

[0003] For example, in Patent Document 1, lighting control such as dimming of general lighting light sources and auxiliary lighting light sources arranged on the ceiling side of a passenger compartment of a railway vehicle is performed by various signals output from a control device. These general lighting light sources and auxiliary lighting light sources are connected to the control device so as to be able to transmit and receive various signals.

[0004] In this way, the transmission and reception of signals between the control device (master unit) and the multiple lighting devices (slave units) may be wired. Similarly, the transmission and reception of signals between the master unit and the slave units may be wireless, in which case the slave units may not necessarily be able to receive the dimming control command wirelessly in one try. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP2019-169499A Summary of the Invention [Problem to be solved by the invention]

[0006] In the case of this type of wireless communication, for example, if a dimming control command is sent 10 times at 100 ms intervals and all of the lighting fixtures receive the dimming command, there will be a time difference of 900 ms between the lighting fixture that receives the dimming control command the first time and the lighting fixture that receives the dimming control signal the tenth time, making it impossible to control the timing of dimming.

[0007] In view of the above circumstances, an object of the present invention is to provide a lighting system, a control device, a lamp, and a vehicle that are capable of wirelessly controlling the timing of dimming of a plurality of lamps. [Means for solving the problem]

[0008] A lighting system according to an aspect of the present invention includes a control device and a plurality of luminaires. The control device wirelessly transmits a dimming control signal multiple times at predetermined time intervals. The plurality of luminaires receive the dimming control signal. The dimming control signal includes transmission count information indicating how many times the dimming control signal has been transmitted, Each of the plurality of lighting devices has a light emitting unit and a light emission timing control unit that controls the timing at which the light emitting unit emits light based on the transmission count information.

[0009] According to the above lighting system, the multiple luminaires know how many times the dimming control signal has been transmitted and thus the multiple luminaires can control the timing of emitting light from their light-emitting parts. In other words, the light emission timing of the multiple luminaires can be synchronized.

[0010] The light emission timing control unit may dim the light of the light emission unit after receiving the dimming control signal and after a waiting time that is the product of the difference between the total number of times the dimming control signal is transmitted and the number of transmissions indicated in the transmission count information and the specified time interval.

[0011] The plurality of luminaires may be connected to one another in a multi-hop network.

[0012] The control device may transmit the dimming control signal by broadcast.

[0013] The lighting system may be provided in a railway vehicle.

[0014] The control device is provided in a first vehicle, The plurality of lamps may be provided on the first vehicle and on a second vehicle coupled to the first vehicle.

[0015] In order to achieve the above-mentioned object, the control device of the present invention is a control device that wirelessly transmits a dimming control signal to a plurality of luminaires multiple times at a predetermined interval, and the dimming control signal includes transmission count information indicating the number of times the dimming control signal is being transmitted.

[0016] In order to achieve the above object, the present invention provides a lighting device that receives a dimming control signal transmitted wirelessly from a control device multiple times at a predetermined interval, the dimming control signal including transmission count information indicating the number of transmissions of the dimming control signal, Each of the plurality of lighting devices has a light emitting unit and a light emission timing control unit that controls the timing at which the light emitting unit emits light based on the transmission count information.

[0017] In order to achieve the above object, a vehicle according to the present invention includes a lighting system. The lighting system includes a control device and a plurality of luminaires. The control device wirelessly transmits a dimming control signal multiple times at predetermined time intervals. The plurality of luminaires receive the dimming control signal. The dimming control signal includes transmission count information indicating how many times the dimming control signal has been transmitted, Each of the plurality of lighting devices has a light emitting unit and a light emission timing control unit that controls the timing at which the light emitting unit emits light based on the transmission count information. Effect of the Invention

[0018] According to the controller of the present invention, it is possible to wirelessly control the timing of dimming of a plurality of lighting fixtures. [Brief description of the drawings]

[0019] [Figure 1]1 is a diagram illustrating a schematic diagram of a lighting system according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a block diagram showing an example of the configuration of a lighting fixture. [Diagram 3] FIG. 2 is a block diagram showing an example of the configuration of a parent unit. [Figure 4] 6 is a flowchart showing a process of a master unit of the lighting system. [Diagram 5] 5 is a flowchart showing processing of a luminaire of the lighting system. [Figure 6] FIG. 10 is a diagram illustrating a lighting system according to a modified example of the present invention. [Figure 7] FIG. 13 is a block diagram showing an example of the configuration of a lamp according to the modified example. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0020] Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

[0021] <First embodiment> Fig. 1 is a diagram showing a schematic diagram of a lighting system 100 according to a first embodiment of the present invention. In Fig. 1, the lighting system 100 includes a control device (parent device 1) and luminaires 2 (plurality of luminaires) that receive a signal (a dimming control signal S1 described later) transmitted from the control device (parent device 1). In this embodiment, as shown in Fig. 1, the railway vehicle on which the parent device 1 is provided is a first vehicle (railroad vehicle 10), and the railway vehicle coupled to the railway vehicle 10 is a second vehicle (railroad vehicle 20).

[0022] As shown in Fig. 1, a railway vehicle 10 has a base unit 1 and lamps 2a to 2c. For example, the railway vehicle 10 is a commuter vehicle or an express vehicle capable of running on a track (not shown), and generally has a bogie 11 and a vehicle structure 12 supported by the bogie. The vehicle structure 12 is configured to form a hexahedron with an underframe 13 forming the floor of the railway vehicle 10, a pair of end structures 14 (e.g., gable structures) erected at both ends of the underframe 13 in the track direction to form a coupling portion 5 of the vehicle structure 12, a pair of end sides 15 erected at both ends of the underframe 13 in the sleeper direction to form a side portion of the vehicle structure 12, and a roof structure 16 joined to the upper ends of the pair of end structures 14 and the upper ends of the pair of end sides 15 to form a roof portion of the vehicle structure 12.

[0023] The inside of the car body structure 12 has a passenger compartment and a crew compartment, and the car body structure 12 is provided with a passenger entrance and exit and windows leading to the passenger compartment, and a crew entrance and exit leading to the crew compartment. Handrails (not shown) and the like are fixed to the ceiling of the passenger compartment. In addition to the above, the railway car may have an in-car information screen that displays destinations and news, security cameras, communication devices, and other electronic devices.

[0024] In this embodiment, a door (end panel) is provided at the coupling portion 5. For example, passengers can move to the adjacent railcar 20 by manually or automatically opening the door. In this embodiment, the door is made of metal.

[0025] 1, railway vehicle 10 is connected to railway vehicle 20 via a coupling section 5. Railway vehicle 20 has lighting fixtures 2. Similarly, a vehicle connected to railway vehicle 20 via a coupling section 5 also has lighting fixtures.

[0026] The master unit 1 is a wireless terminal that communicates with the slave unit (lamp 2). In this embodiment, the master unit 1 uses ZigBee (registered trademark), which is a standard of a multi-hop method. In ZigBee, communication is performed between devices that have a common PAN (Personal area network) ID set. For example, when a signal with a specific PANID is transmitted from the master unit 1, the luminaire 2 with the same PANID set receives the signal and transmits the received signal as is. When another luminaire with the same PANID receives the signal, it transmits the received signal as is. In this way, signals are transmitted and received between devices with the same PANID set, and communication is performed between all devices with the same PANID set.

[0027] The communication method between the parent unit 1 and the luminaire 2 is not limited to ZigBee, and a multi-hop communication other than ZigBee may be used. For example, a communication method may be used in which a wireless node using a specific low-power radio in a predetermined frequency band installed in each device searches for nearby nodes, autonomously constructs a network, and collects data using a bucket brigade. This communication method is characterized by not requiring running costs for communication and being suitable for areas with high residential density. In this embodiment, the parent unit 1 transmits a dimming control signal S1 to the luminaire 2 by broadcast, and the luminaire 2 that receives the dimming control signal S1 transfers the dimming control signal S2 in a bucket brigade manner. Furthermore, the communication method between the parent unit 1 and the luminaire 2 may be a communication method other than multi-hop communication. In addition, other than multi-hop communication, for example, the parent unit 1 may transmit the dimming control signal S1 to the luminaire 2 only by broadcast.

[0028] In this embodiment, the parent unit 1 also functions as a control device capable of controlling the dimming of the luminaire 2. That is, a signal to perform dimming control from the parent unit 1 is received by a nearby luminaire, and the signal is transmitted from that luminaire to the next luminaire.

[0029] In Fig. 1, the parent unit 1 is placed in the leading car (e.g., the driver's compartment). For example, when the conductor controls the dimming rate of the interior lights, the dimming rate of each lighting fixture 2 (child unit) is controlled by operating the control device (parent unit 1). The location where the parent unit 1 is placed is not limited, and it may be placed in the leading car or the last car, or in any of the cars connected between the leading car and the last car.

[0030] The lighting fixtures 2 receive various signals from the parent unit 1, and transmit signals from the parent unit 1 to nearby lighting fixtures. In this embodiment, the lighting fixtures 2 are arranged in the longitudinal direction of the vehicle body structure 12. Furthermore, in addition to the leading car, the lighting fixtures 2 are also arranged in the same manner from the railcar 20 coupled to the leading car to the rearmost car.

[0031] The slave unit is not limited to a lamp, and may be an in-car information screen that displays destinations and news, a security camera, a communication device, or other electronic device. In this case, for example, the master unit may be a screen control device that controls the content displayed on the in-car information screen, or a monitoring device that detects abnormalities inside the car from images from a security camera.

[0032] FIG. 2 is a block diagram showing an example of the configuration of the lighting device 2, and FIG. 3 is a block diagram showing an example of the configuration of the master unit 1. As shown in FIG.

[0033] The master unit 1 has an operation unit 1A, a first control unit 1B, and a first communication module 1C. In this embodiment, the master unit 1 performs dimming control of the luminaire 2, which will be described later. The dimming control includes control of the illumination emitted by the luminaire 2. For example, the master unit 1 can control the dimming rate of the luminaire 2 from 0% to 100%.

[0034] The operation unit 1A can control the dimming rate of the luminaire 2 by inputting an operation by a user or the like. In this embodiment, the operation unit 1A outputs the dimming rate control input by a user (e.g., a conductor) through a remote operation using a PC or the like to the first control unit 1B. Without being limited thereto, for example, the operation unit 1A may have a switch or the like capable of selecting a predetermined brightness of the luminaire 2 in the brightness (luminance or illuminance) of the surrounding environment such as sunny weather, cloudy weather, morning, daytime, evening, night, etc. Also, for example, the operation unit 1A may be a touch panel or the like, and the user may control the dimming rate of the luminaire 2 via the touch panel. In addition to this, the operation unit 1A may be a display on which the current status of the luminaire, such as the current dimming rate of the luminaire 2, is displayed.

[0035] As described above, the first controller 1B performs dimming control of the luminaire 2. For example, the dimming control is a change in the dimming rate of the luminaire 2. That is, the first controller 1B outputs a dimming control signal S1 to the luminaire 2 to perform the above dimming control.

[0036] The first control unit 1B wirelessly generates the dimming control signal S1 multiple times at a predetermined time interval. In this embodiment, the signal is transmitted 10 times at 100 ms intervals, but the present invention is not limited to this and may be transmitted at 10 ms intervals or 5 times. The dimming control signal S1 also includes dimming rate information related to the dimming rate of the luminaire 2 to be controlled and transmission count information indicating the number of times the dimming control signal S1 has been transmitted.

[0037] The first communication module 1C outputs (transmits) the dimming control signal S1 generated by the first control unit 1B to the luminaire 2. In this embodiment, the first communication module 1C uses a multi-hop communication standard using radio waves in the 2.4 GHz band.

[0038] As shown in FIG. 2, the lighting device 2 includes a light emitting unit 21, a constant current circuit 22, a second control unit 23, and a second communication module 24.

[0039] The light-emitting unit 21 is configured to be capable of emitting a sufficient amount of light to illuminate the passenger compartment. For example, a plurality of light-emitting units may be arranged along the longitudinal direction, or any number of light-emitting units may be used in any arrangement depending on the amount of light emitted from adjacent child units, advertisements in the railway vehicle, the environment outside the railway vehicle, and the like. In this embodiment, the light-emitting unit 21 incorporates a plurality of LED elements, and emits light upon receiving a DC power supply input from a constant current circuit 22, which will be described later. The light-emitting unit 21 emits light at an illuminance according to the magnitude of the input current. In this embodiment, the light-emitting unit 21 is an LED, but of course the present invention is not limited to this and may be a fluorescent lamp.

[0040] The constant current circuit 22 outputs a predetermined DC current from the externally supplied power P. In this embodiment, the power P is supplied to the constant current circuit 22 by a static inverter (SIV) that extracts, for example, AC 100V from a DC power source from an overhead line.

[0041] The second control unit 23 controls the magnitude of the current supplied to the light-emitting unit 21 and the timing for changing the magnitude of the current supplied to the light-emitting unit 21. The second control unit 23 controls the constant current circuit 22 so that a current value required for the light-emitting unit 21 to emit light at a predetermined illuminance is obtained at a predetermined timing. The second control unit 23 is capable of communicating with the parent unit 1 via the second communication module 24, and controls the magnitude and timing of the current supplied to the light-emitting unit 21 based on the above-mentioned dimming control signal S1 transmitted from the parent unit 1.

[0042] That is, between the luminaires 2 (second communication modules 24), when the second communication module 24 of any luminaire 2 receives the dimming control signal S1 transmitted from the parent unit 1, it transmits the dimming control signal S2. When the second communication module 24 of another luminaire 2 receives the dimming control signal S2 transmitted from the parent unit 1 or another luminaire 2, it transmits the dimming control signal S3 again. In this way, the dimming control signal S is transmitted to all luminaires.

[0043] (Lighting system operation) Next, a description will be given of the operation of the lighting system 100 configured as above. Fig. 4 is a flow chart showing the processing of the master unit 1 of the lighting system 100, and Fig. 5 is a flow chart showing the processing of the luminaire 2 of the lighting system 100.

[0044] First, the processing procedure of the parent unit 1 will be described with reference to Fig. 4. In response to a dimming command inputted by the operation unit 1A to set the dimming rate of the luminaire 2 to a predetermined value (e.g., dimming rate of 50%), the first control unit 1B sets the count number C to 0 (step S101). Here, the count number C is not only used to calculate the waiting time T described later, but also serves as information indicating how many times the dimming control signal S1 has been transmitted. In other words, the dimming control signal S1 transmitted when the count number C is 1 is the dimming control signal S1 transmitted for the first time.

[0045] Next, the count number C, which is 0, is incremented by 1 (step S102). That is, the count number C is incremented by 1 through this process.

[0046] Next, the first control unit 1B generates a dimming control signal S1 including dimming ratio information including a dimming command input from the operation unit 1A to set the dimming ratio of the luminaire 2 to a predetermined value, and transmission count information indicating the number of times the dimming control signal S1 has been transmitted, and the first communication module 1C transmits the generated dimming control signal S1 (step S103). Here, the number of transmissions indicated by the transmission count information of the dimming control signal S1 is the count number C. In other words, when the count number C=1, it is the first transmission.

[0047] Next, the first control unit 1B judges whether the count number C is equal to or greater than the total number Z, which is the total number of times the dimming control signal S1 is transmitted. If the count number C is equal to or greater than the total number Z, the process ends. If the count number C is less than the total number Z, the process returns to step S102 (step S104). That is, for example, if Z=10 times and the count number C=10, the dimming control signal S1 has been transmitted all 10 times, so the process ends. If Z=10 times and the count number C=9, the dimming control signal S1 needs to be transmitted one more time, so the process returns to step S102, increments the count number C by 1, and proceeds to step S103.

[0048] Next, the processing procedure of the luminaire 2 will be described with reference to Fig. 5. The second communication module 24 receives the dimming control signal S1 (step S201).

[0049] Next, the second control unit 23 compares the dimming ratio information of the dimming control signal S1 received last time with the dimming ratio information of the dimming control signal S1 received this time (step S202). That is, if the previous dimming ratio information was to set the dimming ratio of the luminaire 2 to 50%, but the currently received dimming ratio information is to set the dimming ratio of the luminaire 2 to 70% (that is, if the dimming ratio information is different), the result is YES, and if the dimming ratios (dimming ratio information) are the same, the result is NO. If the result is YES in step S202, the process proceeds to step S203.

[0050] Next, if the answer is YES in step S202, the second control unit 23 calculates the waiting time T (step S203). The waiting time T is expressed by the following formula. T=(Z-C)×H...(Formula 1)

[0051] As described above, Z is the total number of times (total number of times) that the dimming control signal S1 is transmitted, and in this embodiment, Z=10, but of course, this is not limited to this and Z=5 may be used. Also, H is the time interval at which the dimming control signal S1 is transmitted, and in this embodiment, it is 100 ms, but of course, this is not limited to this and it may be 10 ms. Also, C is the count number described above, and when the count C is 1, C=1.

[0052] Next, the second control unit 23 waits for the calculated waiting time T after receiving the dimming control signal S1 (step S204). Next, after waiting for the waiting time T, the second control unit 23 dims the light of the light-emitting unit 21 to a predetermined dimming rate (step S205). As described above, this is because the second control unit 23 controls the constant current circuit 22 to obtain a current value necessary for the light-emitting unit 21 to emit light at a predetermined illuminance.

[0053] In other words, in this embodiment, the dimming control signal S1 transmitted from the parent unit 1 incorporates transmission count information indicating the number of times the dimming control signal S1 is being transmitted, so that the luminaires 2 can all dim the lights simultaneously by waiting for a period of time corresponding to the number of transmissions.

[0054] For example, assume that Z=10 and H=100 ms, and the luminaire 2a receives a dimming control signal S1 for the first time to set the dimming rate to 50%, and the luminaire 2d receives a dimming control signal S1 for the eighth time to set the dimming rate to 50%. In this case, from the above formula 1, the luminaire 2a emits light 900 ms after receiving the first dimming control signal S1, and the luminaire 2d emits light 200 ms after receiving the eighth dimming control signal S1. Here, it takes 700 ms from the transmission of the first dimming control signal S to the transmission of the eighth dimming control signal S1. This allows all the luminaires 2 to be dimmed simultaneously.

[0055] (Modification) Fig. 6 is a diagram showing a schematic diagram of a lighting system 100' according to a modified example of the present invention, and Fig. 7 is a block diagram showing a configuration example of a luminaire 2 according to the modified example. Below, configurations different from the first embodiment will be mainly described, and configurations similar to those in the first embodiment will be denoted by the same reference numerals and descriptions thereof will be omitted or simplified.

[0056] The lighting system 100′ differs from the first embodiment in that it further includes a repeater 3. The repeater 3 is provided in each of the railway cars 10 and 20, as shown in FIG.

[0057] As described above, a metal door (end plate) is provided on the end structure 14. This may block wireless communication from the lamp 2c closest to the door to the lamp 2d closest to the door of the adjacent railcar 20.

[0058] The repeater 3 then transmits the signal S1' (e.g., a dimming control signal) transmitted from the lighting fixture 2 to the lighting fixture 2 or the repeater 3 of the adjacent railway car 20. In this embodiment, the repeater 3 has a stronger radio wave strength than the master unit 1 and the lighting fixture 2 because the wireless signal passes through a door. For example, the radio wave strength of the master unit 1 and the lighting fixture 2 is -65 dBm, and the radio wave strength of the repeater 3 is -55 dBm.

[0059] Moreover, the repeater 3 is placed near the door to facilitate communication with the lighting fixture 2 or the repeater 3 placed in the adjacent railcar 20.

[0060] 7, the second communication module 24 mounted on the luminaire 2c receives a signal S2' from the other luminaires and transmits a signal S3' to the repeater 3a. Here, the luminaire 2c is the luminaire placed closest to the metal door (the adjacent railcar 20) provided on the end body structure 14.

[0061] The radio wave strength of the second communication module 24 is such that wireless communication through the door to the lighting fixture 2d installed in the adjacent railway car 20 is impeded, so communication is performed via the repeater 3a, which has a stronger radio wave strength.

[0062] The communication module 3a' of the repeater 3a receives the signal from the lamp 2d and transmits a signal S4' to the repeater 3b arranged in the adjacent railcar 20. The lamp 2d arranged in the adjacent railcar 20 receives the signal S4' transmitted from the communication module 3a' of the repeater 3b, and transmits the signal S5' to the lamps in the same railcar 20, in the same manner as described above.

[0063] In this way, the signal S1' from the master unit 1 is transmitted via each lamp 2 to the lamp 2c located closest to the adjacent railcar 20, then via the repeater 3a to the repeater 3b located on the adjacent railcar 20, and then from the repeater 3b to the lamp 2d. By exchanging signals S1' to S5' in this way, signals are transmitted to the lamps located on all railcars.

[0064] As described above, even if a metal door is placed on the end body structure 14 between railway cars, by adding a repeater 3 with enhanced radio wave strength, wireless communication with the adjacent railway car 20 and even the last railway car is possible.

[0065] 6, since the railcar 10 is the leading car, only one repeater is provided, but this is not limited thereto, and two repeaters may be provided at the front and rear in the direction of travel. In other words, the railcar 10 may be provided with a repeater 3 and a repeater 3 provided on the opposite side of the repeater 3.

[0066] 6 and 7, the repeater 3 is provided independently of the lighting fixture 2, but this is not limited thereto. For example, the lighting fixture 2c disposed closest to the adjacent railcar 20 may function as the repeater 3. For example, the radio wave intensity of the second communication module 24 may be strong.

[0067] 7, communication is performed from the repeater 3a to the repeater 3b of the adjacent railcar 20, but this is not limiting. For example, communication may be performed from the repeater 3 to a lamp (e.g., the lamp 2d closest to the door) of the adjacent railcar 20. In this case, the second communication module 24 of the lamp 2d receives the signal S4' transmitted from the communication module 3a' of the repeater 3a to the inside of the railcar 20.

[0068] Although the embodiment of the present invention has been described above, the present invention is not limited to the above-mentioned embodiment, and various modifications can be made, and the configurations of the respective embodiments and modified examples can be combined. For example, in the present embodiment, a lighting system for controlling lighting fixtures installed in a railway vehicle has been described, but the lighting system may also be used for controlling lighting fixtures in each booth where objects that obstruct communication, such as metal walls or partitions, are installed in each predetermined section. [Explanation of symbols]

[0069] 1...Control device 1A…Operation unit 1B...First control section 1C: First communication module 2…Lighting equipment 3. Repeater 5...Connection part 100…Lighting system

Claims

1. A control device that wirelessly transmits a dimming control signal multiple times at a predetermined time interval; A plurality of lighting fixtures that receive the dimming control signal; Equipped with The dimming control signal includes transmission count information indicating how many times the dimming control signal has been transmitted, Each of the lighting devices has a light emitting unit and a light emission timing control unit that controls the timing of emitting light from the light emitting unit based on the transmission count information. Lighting system.

2. 2. A lighting system according to claim 1, The light emission timing control unit dims the light of the light-emitting unit after a standby time that is a product of a difference between a total number of times the light-adjusting control signal is transmitted and a number of times of transmission indicated by the transmission number information and the predetermined time interval after receiving the light-adjusting control signal. Lighting system.

3. 2. A lighting system according to claim 1, The plurality of luminaires are connected to each other in a multi-hop network. Lighting system.

4. 2. A lighting system according to claim 1, The control device transmits the dimming control signal by broadcast. Lighting system.

5. 2. A lighting system according to claim 1, The lighting system is provided in a railway vehicle. Lighting system.

6. 6. A lighting system according to claim 5, The control device is provided in a first vehicle, The plurality of lamps are provided on the first vehicle and a second vehicle connected to the first vehicle. Lighting system.

7. A control device that wirelessly transmits dimming control signals to multiple lighting fixtures at predetermined intervals, The dimming control signal includes transmission count information indicating how many times the dimming control signal is transmitted. Control device.

8. A plurality of luminaires that receive a dimming control signal wirelessly transmitted multiple times at a predetermined interval from a control device, The dimming control signal includes transmission count information indicating how many times the dimming control signal is transmitted, Each of the lighting devices has a light emitting unit and a light emission timing control unit that controls the timing of emitting light from the light emitting unit based on the transmission count information. Light equipment.

9. A control device that wirelessly transmits a dimming control signal multiple times at a predetermined interval; A plurality of lighting fixtures that receive the dimming control signal; having The dimming control signal includes transmission count information indicating how many times the dimming control signal is transmitted, Each of the lighting devices has a light emitting unit and a light emission timing control unit that controls the timing of emitting light from the light emitting unit based on the transmission count information. Lighting System A vehicle equipped with the above.

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