Lighting control system

Abstract

This disclosure aims to provide a lighting control system that can display evacuation routes in a way that is easily visible to people. [Solution] The lighting control system comprises multiple lighting fixtures and a control device. The control device has a table that describes the lighting state sets of the multiple lighting fixtures for each lighting fixture that detects a person, in order to display an evacuation route corresponding to the location of the lighting fixture when the lighting fixture detects a person. In an emergency, the control device determines the corresponding lighting state set for each lighting fixture that has detected a person, based on the table. Based on the determined lighting state set, the control device makes a final decision on the lighting state of the multiple lighting fixtures. The multiple lighting fixtures control the lighting of their light sources based on the final decision. In the lighting state set, at least the lighting fixtures located on the evacuation route are set to high-power lighting, and the other lighting fixtures are set to low-power lighting.

Description

Technical Field

[0001] The present disclosure relates to technology for performing evacuation guidance.

Background Art

[0002] Patent Document 1 discloses a technique for projecting information necessary in an emergency, such as the direction of an evacuation exit, onto a floor surface. Since the information is projected onto the floor surface, the information can be made easily visible to people inside the building.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] Since the device that projects information is installed independently of the position of the person to whom the information should be conveyed, it is conceivable that the projected image may not catch the eye of people inside the building with the above-described method.

[0005] In order to solve the above-described problem, the present disclosure aims to provide a lighting control system capable of displaying an evacuation route so as to catch people's attention.

Means for Solving the Problems

[0006] An aspect of the present disclosure is: a plurality of lighting fixtures arranged inside a building, each having a detection device capable of detecting a person and a light source; and a control device that controls the plurality of lighting fixtures; comprising: wherein the control device has a table in which a lighting state set, which is the lighting state of the plurality of lighting fixtures for displaying the evacuation route of the building corresponding to the position of the relevant lighting fixture when a lighting fixture detects a person, is described for each case where each of the plurality of lighting fixtures detects a person, A discrimination process is performed to determine the corresponding lighting state set for each of the multiple lighting fixtures in which a person was detected in an emergency, based on the table. A final determination process is performed to determine the lighting state of the plurality of lighting fixtures based on each of the lighting state sets determined in the aforementioned determination process, A transmission process that transmits a lighting control signal specifying the lighting state for each of the plurality of lighting fixtures based on the result of the final decision process, It is configured to perform, The plurality of lighting fixtures are configured to perform a process to control the lighting of the light source so that it enters a lighting state specified by the lighting control signal. In the aforementioned lighting state set, the lighting state of at least the lighting fixtures located along the evacuation route among the plurality of lighting fixtures is set to high-power lighting, and the lighting state of the other lighting fixtures is set to low-power lighting, in which case it is a lighting control system. [Effects of the Invention]

[0007] In this disclosure, at least some lighting fixtures located along evacuation routes are illuminated at high power, while other lighting fixtures are illuminated at low power. This makes evacuation routes within a building more visible and easier for people to notice. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows an example configuration of a lighting control system according to Embodiment 1. [Figure 2] This diagram illustrates the method for displaying evacuation routes according to Embodiment 1. [Figure 3] This diagram illustrates the method for displaying evacuation routes according to Embodiment 1. [Figure 4] This diagram shows the evacuation route when the lighting fixture 3B according to Embodiment 1 detects a person. [Figure 5] This is a block diagram showing an example configuration of the emergency exit sign 2A according to Embodiment 1. [Figure 6]This is a block diagram showing an example configuration of a lighting fixture according to Embodiment 1. [Figure 7] This is a flowchart illustrating the process performed by the lighting control system according to Embodiment 1. [Modes for carrying out the invention]

[0009] Embodiments of this disclosure will be described with reference to the drawings. The same or corresponding components will be denoted by the same reference numerals, and repetition of the description may be omitted.

[0010] Embodiment 1 Figure 1 shows an example of the configuration of a lighting control system 1 according to Embodiment 1. The lighting control system 1 comprises multiple lighting fixtures 3 and multiple emergency exit signs 2 arranged within a building. In Figure 1, in a top view of a rectangular room 300, 15 lighting fixtures 3 are arranged on the ceiling or floor at intervals of 3 rows and 5 columns. In addition, two emergency exit signs 2 are arranged on the wall of the room 300 where an emergency exit (doorway) 400 is installed.

[0011] Emergency exit lights 2 are emergency exit lights positioned immediately next to the emergency exit 400 and indicating that it is the emergency exit 400 with a green light, or passageway lights positioned near the emergency exit 400 and indicating the direction to the emergency exit 400 with a green light. In this embodiment, of emergency exit lights 2A and emergency exit lights 2B, the one that controls the lighting of multiple lighting fixtures 3 in an emergency is designated as emergency exit light 2A. However, the distinction between emergency exit lights 2A and emergency exit lights 2B is for convenience only, and either one may perform the lighting control.

[0012] Lighting fixtures 3 include, for example, base lights, ceiling lights, downlights, spotlights, etc. Each of the multiple lighting fixtures 3 has a detection device capable of detecting a person 200. The multiple lighting fixtures 3 detect a person 200 in an emergency and notify the emergency exit sign 2A of the detection result.

[0013] Figures 2 and 3 are diagrams for explaining the evacuation route display method according to Embodiment 1. Although Figure 2 is similar to Figure 1, alphabets A, B, C··· corresponding to the identifiers (such as IDs or addresses) of the lighting fixtures are added to each reference numeral of the lighting fixtures 3. In addition, in Figure 2, as routes heading toward the evacuation exit 400, an evacuation route 11 leading from lighting fixture 3A to lighting fixture 3E, an evacuation route 12 leading from lighting fixture 3F to lighting fixture 3J, and an evacuation route 13 leading from lighting fixture 3K to lighting fixture 3O are shown. Further, Figure 2 shows an evacuation route 14 that proceeds in the order of lighting fixture 3E, lighting fixture 3J, and lighting fixture 3O. The evacuation route 14 is a route that passes in front of the guide light 2A and the guide light 2B and reaches the evacuation exit 400.

[0014] In the present embodiment, the evacuation route is displayed by lighting a plurality of lighting fixtures 3 in cooperation with each other. For this purpose, the guide light 2A stores a table 10 as shown in Figure 3. In the table 10, the lighting state of each lighting fixture 3 required to display the evacuation route is set. Hereinafter, a set of the lighting states of the respective lighting fixtures 3 required to display a certain evacuation route, with a plurality of lighting fixtures taken as one set, is referred to as a lighting state set.

[0015] Each row of the table 10 in Figure 3 indicates the identifier of the lighting fixture 3 that has detected a person, and each column indicates the lighting state of each lighting fixture 3. By setting the lighting state set for each identifier of the lighting fixture 3 that has detected a person in this way, it is possible to display an evacuation route corresponding to the position of the lighting fixture 3 that has detected the person 200.

[0016] Further, in the table 10, the lighting state of the lighting fixtures 3 present on the evacuation route is set to full light output, and the lighting state of the lighting fixtures 3 not present on the evacuation route is set to the lower limit output.

[0017] For example, as shown in Figure 4, if lighting fixture 3B detects a person, the route 20 from lighting fixture 3B → lighting fixture 3C → lighting fixture 3D → lighting fixture 3E → emergency light 2A → lighting fixture 3J → lighting fixture 3O → emergency light 2B is suitable as an evacuation route to emergency exit 400. Therefore, as shown in Table 10 in Figure 3, if lighting fixture 3B detects a person, lighting fixtures 3B, 3C, 3D, 3E, 3J, and 3O are set to illuminate at full light output, and the other lighting fixtures 3 are set to illuminate at minimum output.

[0018] In this embodiment, the lighting fixtures 3 located along the evacuation route are illuminated at high output, while the other lighting fixtures 3 are illuminated at low output. This makes the evacuation route within the room 300 more visible and easier for people to notice. This makes it easier to guide people 200 detected by the lighting fixtures 3 to the evacuation exit 400. Furthermore, rescue personnel, such as firefighters, can reach people 200 by following the reverse route of the evacuation route, so this embodiment is also expected to play a role in rescue support.

[0019] <Modification 1 of Figure 3> In Figure 3, the illuminated state of lighting fixture 3 located on the evacuation route is shown as full brightness output, but the output does not necessarily have to be full brightness; it should be high enough to be easily visible to person 200. Similarly, in Figure 3, the illuminated state of lighting fixture 3 not located on the evacuation route is shown as lower brightness output, but the output does not necessarily have to be lower brightness; it should be low enough to be easily distinguishable from lighting fixture 3 located on the evacuation route.

[0020] <Modified version 2 of Figure 3> Full-power illumination is not limited to static illumination, but also includes cases where the illumination state changes dynamically, such as flashing / blinking or changes in color temperature. Lower-limit illumination includes being off (illuminated at output 0). However, from the perspective of ensuring visibility, it is desirable to keep lighting fixtures 3, even those not on the evacuation route, lit at an output level sufficient to ensure visibility for 200 people, rather than turning them off. In particular, keeping the lower-limit illumination on means that even lighting fixtures 3 that were off before the emergency are illuminated and controlled to the lower limit.

[0021] <Modification 3 of Figure 3> Furthermore, a pre-trained model may be used to create Table 10 in Figure 3. In this case, for example, an external computing device inputs layout information of room 300, including lighting fixtures 3, emergency exits 400, and emergency exit signs 2, into the pre-trained model, causing the pre-trained model to generate sets of lighting states. The pre-trained model is a model that has been pre-trained on evacuation routes corresponding to the positions of people 200 in room 300 and suitable lighting states for each lighting fixture 3 to display those evacuation routes. The external computing device may store the sets of lighting states generated using the pre-trained model as Table 10 in the emergency exit sign 2A.

[0022] <Modification 4 of Figure 3> Furthermore, when multiple evacuation routes are installed, such as with exit signs 2A and 2B, the passage in front of exit sign 2 often becomes an evacuation route. Therefore, lighting fixtures 3 located along routes that pass in front of multiple exit signs 2 (lighting fixtures 3E, 3J, and 3O on evacuation route 14 in the example in Figure 2) may be kept lit at full output at all times during an emergency, regardless of whether people are present or not.

[0023] <Modification 5 of Figure 3> In the case of lighting fixtures 3 located along an evacuation route, the evacuation route may be indicated by sequentially turning on the lighting fixtures 3 in the direction indicated by the evacuation route, starting from the lighting fixture 3 that detects a person.

[0024] Figure 5 is a block diagram showing an example configuration of an emergency exit sign 2A according to Embodiment 1. The emergency exit sign 2A comprises a light-emitting unit 21 as a backlight for the guide sign, a power supply unit 22, a control unit 23, a storage battery 24, and a communication unit 25. The storage battery 24 may be built into the emergency exit sign 2A, or it may be connected to the emergency exit sign 2A and located separately outside of the emergency exit sign 2A.

[0025] The light-emitting unit 21 directs light emitted from a light-emitting element such as an LED onto a light guide plate on which pictograms indicating evacuation guidance are displayed, causing surface illumination. The light-emitting unit 21 normally emits light using power supplied from an external power supply 50, and in emergencies, it emits light using power supplied from a storage battery 24.

[0026] The power supply unit 22 includes a normal lighting circuit 221, a charging circuit 222, an emergency lighting circuit 223, and a determination unit 224. Under normal circumstances, the power supply unit 22 converts power supplied from the external power supply 50 via the normal lighting circuit 221 to illuminate the light-emitting unit 21, and converts power supplied from the external power supply 50 via the charging circuit 222 to charge the storage battery 24. In an emergency, when the power supply from the external power supply 50 is stopped, the power supply unit 22 receives an emergency control signal from the determination unit 224. In this case, the power supply unit 22 stops the charging circuit 222 and converts power supplied from the storage battery 24 to supply to the light-emitting unit 21, thereby illuminating the light-emitting unit 21.

[0027] The determination unit 224 receives an emergency signal 60 from an external source and switches the illumination of the exit sign 2 from normal to emergency mode. The emergency signal 60 is, for example, a fire signal transmitted from an automatic fire alarm system when a fire is detected, a smoke signal from a smoke detector, or a signal transmitted from an external button, remote control, etc. In addition, the determination unit 224 also switches the illumination of the exit sign 2 from normal to emergency mode if the power supply from the external power source 50 is stopped due to a power outage or the like. Furthermore, the determination unit 224 outputs an emergency control signal to the power supply unit 22 and the control unit 23 to indicate that the illumination of the exit sign 2 has been switched from normal to emergency mode.

[0028] The control unit 23 is, for example, a microcontroller having volatile or non-volatile memory and a processor. The control unit 23 includes a storage unit 231, an acquisition unit 232, a setting unit 233, and a processing unit 234.

[0029] The memory unit 231 stores a table 10 containing a set of lighting states, which are the lighting states of each lighting fixture 3 necessary to display an evacuation route, with each lighting fixture 3 being treated as a set. The lighting state set is defined for each identifier of the lighting fixture 3 that detected a person.

[0030] When the collection unit 232 receives an emergency control signal from the determination unit 224 indicating that the illumination of the exit sign 2 is being switched from normal to emergency mode, it sends a request signal to the multiple lighting fixtures 3, causing each of the multiple lighting fixtures 3 to detect a person 200. The collection unit 232 receives a response signal from each of the multiple lighting fixtures 3, which is the result of confirming the presence or absence of a person 200.

[0031] The setting unit 233 determines whether or not a person has been detected in each of the multiple lighting fixtures 3 based on the response signal. Furthermore, for each lighting fixture 3 in which a person has been detected, the setting unit 233 determines the corresponding lighting state set based on the table 10 (determination process). The setting unit 233 stores the determined lighting state set for each lighting fixture 3 in the storage unit 231. Finally, the setting unit 233 makes a final determination of the lighting state of each lighting fixture 3 based on each lighting state set determined in the determination process (final determination process).

[0032] If a person is detected in both lighting fixture 3A and lighting fixture 3B, the corresponding lighting state set is determined for each of them. In this case, there may be cases where the lighting state cannot be compatible between the lighting state set corresponding to lighting fixture 3A and the lighting state set corresponding to lighting fixture 3B.

[0033] In other words, according to the table in Figure 3, the lighting state set corresponding to lighting fixture 3A requires lighting fixture 3A to be lit at full light output, but the lighting state set corresponding to lighting fixture 3B requires lighting fixture 3A to be lit at the minimum output, so the lighting states cannot be reconciled.

[0034] Therefore, the setting unit 233 prioritizes full-power illumination to ensure visibility of evacuation routes. Specifically, the setting unit 233 finalizes the illumination state of lighting fixture 3 for which full-power illumination is set in at least one of the illumination state sets determined by the discrimination process to full-power illumination. The setting unit 233 also finalizes the illumination state of lighting fixture 3 for which low-power illumination is set in all of the illumination state sets determined by the discrimination process to low-power illumination.

[0035] The processing unit 234 transmits a lighting control signal to each of the multiple lighting fixtures 3 to instruct them to light up, based on the result of the final decision processing by the setting unit 233 (transmission processing).

[0036] The communication unit 25 is a communication device that can send and receive signals to and from multiple lighting fixtures 3 and emergency lights 2B via wired or wireless means.

[0037] <Modification 1 of Figure 5> It is desirable that the detection results of the person 200 by multiple lighting fixtures 3 be updated each time. Therefore, the emergency exit sign 2A uses a timer to repeatedly transmit a request signal at fixed or irregular intervals, causing the multiple lighting fixtures 3 to repeatedly detect the person 200. As the emergency exit sign 2A receives new response signals from the multiple lighting fixtures 3, it performs discrimination processing, final decision processing, and transmission processing. This makes it possible to display an evacuation route corresponding to the movement of the person 200.

[0038] <Modification 2 of Figure 5> The control unit 23 may notify an external communication device of the presence / absence confirmation results of the person 200 collected by receiving response signals from each of the multiple lighting fixtures 3. In this case, it is desirable that the presence / absence confirmation results of the person 200 be linked to the location information or identifier of the source lighting fixture 3. This allows information on the presence / absence of the person 200 at each location within the room 300 to be notified externally, thereby supporting rescue operations. If the response signal includes information on the number of people 200, their locations, and the length of time they stayed, in addition to the presence / absence confirmation results of the person 200, it is desirable that the control unit 23 also notify externally of this information simultaneously. It is desirable that the emergency exit sign 2A notifies an external communication device of the updated results each time the presence / absence confirmation results of the person 200 at the multiple lighting fixtures 3 are updated.

[0039] Figure 6 is a block diagram showing an example configuration of a lighting fixture 3 according to Embodiment 1. The lighting fixture 3 includes a light-emitting unit 31, a power supply unit 32, a communication unit 33, and a detection unit 34. The lighting fixture 3 is assigned an identifier to distinguish it from other lighting fixtures 3, and this identifier is stored in a memory device built into the power supply unit 32 or the communication unit 33.

[0040] The light-emitting unit 31 has a light source such as an LED. The power supply unit 32 controls the lighting state of the light-emitting unit 31 by converting the power supplied from the external power supply 50 and supplying it to the light-emitting unit 31. Controlling the lighting state of the light-emitting unit 31 includes, for example, turning it on / off, increasing or decreasing the output, and changing the color temperature. In addition, when the power supply unit 32 receives a lighting control signal from the emergency light 2A, it controls the lighting of the light-emitting unit 31 to reach the lighting state specified by the lighting control signal.

[0041] The communication unit 33 communicates with exit signs 2A, 2B, and other lighting fixtures 3 via wired or wireless communication. As a more specific example of its function, the communication unit 33 receives a request signal from exit sign 2A in an emergency. The communication unit 33 sends a response signal to exit sign 2A, including the result of the detection unit 34 confirming the presence or absence of a person 200, with the identifier of the lighting fixture 3 added. The communication between the lighting fixture 3 and exit sign 2 may be one-to-one communication or communication involving relay by other lighting fixtures 3.

[0042] The detection unit 34 is a detection device that detects a person 200 within its detection range. More specifically, the detection unit 34 acts as a base station for wireless communication, broadcasting radio waves for location confirmation. When a slave device owned by person 200, such as a smartphone, wearable device, or beacon transceiver, receives a radio wave, it notifies the base station of an acknowledgment signal, such as a reception confirmation response. Based on the received acknowledgment signal, the detection unit 34 confirms the presence or absence of person 200 and generates a response signal that includes the result of the confirmation.

[0043] <Modified example 1 of Figure 6> Furthermore, it is desirable that the detection unit 34 has a function to measure the distance between itself and the slave unit based on a confirmation signal that includes information on the radio wave reception sensitivity of the slave unit. In addition, it is desirable that the detection unit 34 has a function to measure the number of people 200 present in the detection range by counting the received confirmation signals. In this case, the detection unit 34 includes information on the number of people and distance in the response signal, in addition to the presence or absence of people 200.

[0044] <Modified version 2 of Figure 6> The communication unit 33 or detection unit 34 may transmit radio waves containing evacuation route information to the slave unit when a person 200 is detected in an emergency. This allows the person 200 who owns the slave unit to obtain evacuation route information corresponding to their location and to quickly evacuate to the evacuation exit 400. The evacuation route information may be stored in the storage device of the lighting fixture 3 in the form of an image or video, or it may be stored in the form of a URL or two-dimensional code for the slave unit to obtain the image or video via the internet.

[0045] While it is sufficient for evacuation route information to be transmitted by at least one lighting fixture, if each of the multiple lighting fixtures 3 transmits information about the evacuation route corresponding to its own location, the latest evacuation route information can be notified to each of the 200 people according to their current location.

[0046] <Modification 3 of Figure 6> From the standpoint of preventing radio wave interference, it is desirable that the radio wave channel (bandwidth) used by the detection unit 34 to detect people 200 does not overlap with the radio wave channel used by the communication unit 33. More preferably, it is desirable that the radio wave channel used by the communication unit 33 for communication with the emergency lights 2A and 2B does not overlap with the radio wave channel used by the communication unit 33 for communication with other lighting fixtures 3.

[0047] <Modification 4 of Figure 6> Furthermore, the detection unit 34 is not limited to those using wireless communication; it can also use human presence sensors such as infrared sensors, ultrasonic sensors, microwave sensors, photoelectric sensors, and pressure sensors. The detection unit 34 may also be an image sensor. By analyzing the imaging data acquired by the image sensor, information on the presence / absence of people 200, as well as the number of people and their locations, can be obtained.

[0048] <Modification 5 of Figure 6> Furthermore, the detection unit 34 can also acquire the results of other equipment, such as air conditioning units and access control systems, detecting people 200 via the communication unit 33. By incorporating the detection results of people 200 from other equipment, the accuracy of person 200 detection can be improved.

[0049] Figure 7 is a flowchart illustrating the process performed by the lighting control system 1 according to Embodiment 1.

[0050] First, the determination unit 224 of the exit sign 2A, which has received an emergency signal 60 from an external source, outputs an emergency control signal to the power supply unit 22 and the control unit 23 to switch the illumination of the exit sign 2 from normal to emergency (step S1). Next, the power supply unit 22 of the exit sign 2A, which has received the emergency control signal, stops the normal illumination circuit 221 and the charging circuit 222, and instead illuminates the light-emitting unit 21 with power supplied from the storage battery 24 (step S2).

[0051] Furthermore, the data collection unit 232 of the exit sign 2A, which has received the emergency control signal, transmits a request signal to the multiple lighting fixtures 3 (step S3). Furthermore, each of the multiple lighting fixtures 3 that have received the request signal activates its detection unit 34 to detect the person 200 and confirms the presence or absence of the person 200 within the detection range (step S4). Furthermore, each of the multiple lighting fixtures 3 transmits a response signal to the exit sign 2A, including the result of confirming the presence or absence of the person 200, with its own identifier added (step S5).

[0052] Furthermore, the setting unit 233 of the emergency exit sign 2A determines the corresponding lighting state set for each lighting fixture 3 in which a person has been detected, based on the table 10, and stores the determined lighting state set in the storage unit 231 (step S6). In addition, the setting unit 233 of the emergency exit sign 2A makes a final decision on the lighting state of each lighting fixture 3 based on the lighting state set for each lighting fixture 3 in which a person 200 has been detected, and transmits a lighting control signal generated based on the final decision result (step S7). As a result, lighting control according to the lighting control signal is implemented for multiple lighting fixtures.

[0053] Next, the control unit 23 of the exit sign 2A determines whether the emergency control signal from the determination unit 224 has been stopped and the normal control signal is being output (step S8). If the emergency control signal has been stopped (Yes), it means that the emergency has ended, so each part of the exit sign 2 performs a recovery process (step S9). The recovery process includes the collection unit 232 of the exit sign 2 stopping the transmission of request signals to the multiple lighting fixtures 3, and the processing unit 234 stopping the transmission of lighting control signals. Furthermore, the recovery process includes the power supply unit 22 of the exit sign 2 stopping the emergency lighting circuit 223 and supplying power to the light-emitting unit 21 from the external power supply 50 via the normal lighting circuit 221 to make the light-emitting unit 21 illuminate. Furthermore, the recovery process includes the power supply unit 22 of the exit sign 2 supplying power to the storage battery 24 from the external power supply 50 via the charging circuit 222 to charge the storage battery 24.

[0054] On the other hand, if the emergency control signal is not stopped (No), it means that the emergency situation is continuing, so we return to step S3.

[0055] <Modified version of Figure 7> Between step S2 and step S3, the collection unit 232 of the emergency exit sign 2A, upon receiving the emergency control signal, may include the step of transmitting a temporary control signal to each of the multiple lighting fixtures instructing them to temporarily illuminate at high power, and the step of the multiple lighting fixtures 3 temporarily controlling the illumination of their light sources to illuminate at high power in accordance with the temporary control signal. This ensures visibility in the room 300 immediately after the illumination of the emergency exit sign 2 switches from normal to emergency, thereby enhancing the safety of people 200. Note that "temporary" refers to, for example, the period from when the multiple lighting fixtures 3 receive the temporary control signal until they receive the illumination control signal in step S7.

[0056] As described above, in this disclosure, at least the lighting fixtures located along the evacuation route are illuminated at high output, while the other lighting fixtures are illuminated at low output. This makes the areas that serve as evacuation routes within the building more visible and easier for people 200 to notice. Therefore, a lighting control system 1 is provided that can display evacuation routes in a way that catches the eye of people 200.

[0057] This disclosure is not limited to the embodiments described above, and can be modified in various ways during implementation without departing from its essence. For example, the processing described as being performed by the control unit 23 of the emergency exit sign 2A may be performed by a control device located outside the emergency exit sign 2A.

[0058] Furthermore, each embodiment and its modifications may be combined as appropriate, and in that case, the combined effects can be obtained.

[0059] The various aspects of this disclosure are summarized below as an appendix. (Note 1) Multiple lighting fixtures, each having a detection device and light source capable of detecting people, are placed inside the building. A control device for controlling the plurality of lighting fixtures, Equipped with, The control device is When a lighting fixture detects a person, the lighting state set of the multiple lighting fixtures, which displays the evacuation route of the building according to the location of the lighting fixture, has a table that describes the state when each of the multiple lighting fixtures detects a person. A discrimination process is performed to determine the corresponding lighting state set for each of the multiple lighting fixtures in which a person was detected in an emergency, based on the table. A final determination process is performed to determine the lighting state of the plurality of lighting fixtures based on each of the lighting state sets determined in the aforementioned determination process, A transmission process that transmits a lighting control signal specifying the lighting state for each of the plurality of lighting fixtures based on the result of the final decision process, It is configured to perform, The plurality of lighting fixtures are configured to perform a process to control the lighting of the light source so that it enters a lighting state specified by the lighting control signal. In the lighting state set, the lighting state of at least the lighting fixtures located on the evacuation route among the plurality of lighting fixtures is set to high-power lighting, and the lighting state of the other lighting fixtures is set to low-power lighting. (Note 2) The lighting control system according to Appendix 1 includes the lighting of lighting fixtures located along the evacuation route in sequence in the direction indicated by the evacuation route. (Note 3) The aforementioned high output refers to the total light output in the lighting control system described in Appendix 1 or 2. (Note 4) The lighting status of lighting fixtures located along the aforementioned evacuation route is controlled by the lighting control system described in Appendix 3, which includes flashing, blinking, and changes in color temperature. (Note 5) The lighting control system described in any one of the appendices 1 to 3, wherein the low output is a non-zero output. (Note 6) In the final decision process, the control device, In the above discrimination process, the lighting state of a lighting fixture for which high-power lighting is set in at least one of the lighting state sets is determined to be high-power lighting. A lighting control system according to any one of the appendices 1 to 3, wherein the lighting state of a lighting fixture that is set to low-power lighting in all of the lighting state sets determined by the aforementioned determination process is determined to be low-power lighting. (Note 7) Each of the aforementioned multiple lighting fixtures is In an emergency, the process of updating the result of whether or not a person is present is further executed by repeatedly detecting a person at a fixed or irregular interval. The lighting control system according to any one of the appendices 1 to 3, wherein the control device performs the discrimination process, the final decision process, and the transmission process as the results are updated in the plurality of lighting fixtures. (Note 8) The lighting control system as described in Appendix 7, wherein the control device further performs a process of linking the results to the location information or identifier of the lighting fixtures and notifying an external communication device as the results are updated in the plurality of lighting fixtures. (Note 9) The control device is Further processing is performed to determine whether or not a signal indicating an emergency condition has been received. If it is determined that a signal indicating an emergency has been received, Prior to the aforementioned transmission process, the system is configured to perform a process that transmits a temporary control signal to each of the plurality of lighting fixtures, instructing them to temporarily turn on at a high output. The lighting control system according to any one of the appendices 1 to 3, wherein the plurality of lighting fixtures are configured to perform a process of temporarily controlling the lighting of the light sources so that they light up at high output according to the temporary control signal. (Note 10) At least one of the aforementioned lighting fixtures will, in the event of an emergency, detect a person, A lighting control system according to any one of the appendices 1 to 3, further comprising the process of transmitting radio waves containing information on the corresponding evacuation route to the detected person when it detects a person. [Explanation of Symbols]

[0060] 1: Lighting control system, 2: Emergency exit sign, 2A~2B: Emergency exit sign, 3: Lighting fixture, 3A~30: Lighting fixture, 10: Table, 11~14: Evacuation route, 20: Route, 21: Lighting unit, 22: Power supply unit, 23: Control unit, 24: Battery, 25: Communication unit, 31: Lighting unit, 32: Power supply unit, 33: Communication unit, 34: Detection unit, 50: External power supply, 60: Signal, 200: Person, 221: Normal lighting circuit, 222: Charging circuit, 223: Emergency lighting circuit, 224: Judgment unit, 231: Memory unit, 232: Collection unit, 233: Setting unit, 234: Processing unit, 300: Room, 400: Evacuation exit

Claims

1. Multiple lighting fixtures, each having a detection device and light source capable of detecting people, are placed inside the building. A control device for controlling the plurality of lighting fixtures, Equipped with, The control device is When a lighting fixture detects a person, the lighting state set of the multiple lighting fixtures, which displays the evacuation route of the building according to the location of the lighting fixture, has a table that describes the state when each of the multiple lighting fixtures detects a person. A discrimination process is performed to determine the corresponding lighting state set for each of the multiple lighting fixtures in which a person was detected in an emergency, based on the table. A final determination process is performed to determine the lighting state of the plurality of lighting fixtures based on each of the lighting state sets determined in the aforementioned determination process, A transmission process that transmits a lighting control signal specifying the lighting state for each of the plurality of lighting fixtures based on the result of the final decision process, It is configured to perform, The plurality of lighting fixtures are configured to perform a process to control the lighting of the light source so that it enters a lighting state specified by the lighting control signal. In the lighting state set, the lighting state of at least the lighting fixtures located on the evacuation route among the plurality of lighting fixtures is set to high-power lighting, and the lighting state of the other lighting fixtures is set to low-power lighting.

2. The lighting control system according to claim 1, wherein the lighting state of the lighting fixtures located along the evacuation route includes sequentially lighting the lighting fixtures located along the evacuation route in the direction indicated by the evacuation route.

3. The lighting control system according to claim 1 or 2, wherein the high output refers to the total light output.

4. The lighting control system according to claim 3, wherein the lighting state of lighting fixtures located along the evacuation route includes flashing, blinking, and changes in color temperature.

5. The lighting control system according to claim 1 or 2, wherein the low output is a non-zero output.

6. In the final decision process, the control device, In the above discrimination process, the lighting state of a lighting fixture for which high-power lighting is set in at least one of the lighting state sets is determined to be high-power lighting. The lighting control system according to claim 1 or 2, wherein the lighting state of a lighting fixture for which low-power lighting is set in all of the lighting state sets determined by the above determination process is determined to be low-power lighting.

7. Each of the aforementioned multiple lighting fixtures is In an emergency, the process of updating the result of whether or not a person is present is further executed by repeatedly detecting a person at a fixed or irregular interval. The lighting control system according to claim 1 or 2, wherein the control device performs the discrimination process, the final decision process, and the transmission process as the results are updated in the plurality of lighting fixtures.

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