Lighting control system and lighting controller

Abstract

To obtain a lighting control system and a lighting controller that can easily improve the attractiveness of emergency exit lights.SOLUTION: The lighting control system includes general lighting fixtures, emergency exit lights, and a lighting controller that reduces the light intensity of the general lighting fixtures during abnormal conditions to less than the normal time.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] Patent Document 1 discloses an emergency exit light device with a spare lamp. In this emergency exit light device, in an emergency, when the normal power supply is normal and the lamp used during normal use is normal, the spare lamp also lights up. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 63-271599 Summary of the Invention [Problem to be solved by the invention]

[0004] Emergency exit lights are installed so that evacuees can safely escape to emergency exits in the event of an emergency. Emergency exit lights are required to be inspected periodically, and are always maintained and turned on. In general, emergency exit lights have built-in batteries that are kept almost fully charged at all times so that they can continue to be lit for a specified period of time even during a power outage. Alternatively, emergency exit lights are configured to be supplied with power from an external emergency power supply device so that they can continue to be lit in the same way during a power outage.

[0005] In general, emergency exit lights are installed at positions and intervals stipulated by the Fire Service Act so that evacuees in facilities can safely reach emergency exits in the event of an emergency. However, in lit spaces where high-intensity store guide lights are crowded together, such as underground shopping streets or department store sales floors, evacuees may have difficulty noticing emergency exit lights even though they can actually see them. In the event of a fire or other disaster, when evacuees are psychologically shaken, it is important to make them instantly aware of the emergency exit lights.

[0006] From this perspective, flashing emergency exit lights and emergency exit lights with sound guidance have been developed and commercialized. Flashing emergency exit lights have a flashing strobe light to make the evacuation direction easy to see even when smoke fills the area due to a fire. Emergency exit lights with sound guidance provide audio guidance, for example, "Ping, bong, ping, bong, the emergency exit is this way. The emergency exit is this way." In addition, each flashing emergency exit light with sound guidance is equipped with a smoke detector in the compartment beyond the fire door. When this smoke detector detects a fire, the flashing emergency exit light with sound guidance stops the audio and flashing light, preventing erroneous guidance.

[0007] In addition, in Patent Document 1, an additional spare lamp is installed in the emergency exit light, and the spare lamp, which is normally turned off, is turned on in an emergency, thereby increasing the brightness of the display surface of the emergency exit light and improving the visibility of the emergency exit light.

[0008] Thus, emergency exit lights are improved year by year through various research and development. However, in order to improve evacuation safety in existing facilities, it is expected that a large amount of capital investment and construction costs will be required to introduce the latest, superior emergency exit lights. For this reason, although it is recognized that improving safety during emergency evacuations is an important issue, there is a risk that sufficient improvements will not be made.

[0009] An object of the present disclosure is to provide a lighting control system and a lighting controller that can easily improve the visibility of an emergency exit light. [Means for solving the problem]

[0010] The lighting control system according to the present disclosure includes a general lighting fixture, an emergency light, and a lighting controller that dims the general lighting fixture below normal brightness when an abnormality occurs.

[0011] The lighting controller according to the present disclosure includes a communication unit that receives a signal from an external system notifying the occurrence of an abnormality, and a control unit that, when the communication unit receives the signal, dims general lighting fixtures below normal brightness. Effect of the Invention

[0012] The lighting control system and lighting controller according to the present disclosure dim general lighting fixtures when an abnormality occurs, thereby easily improving the visibility of emergency lights. [Brief description of the drawings]

[0013] [Figure 1] 1 is a block diagram showing a configuration of a lighting control system according to a first embodiment. [Diagram 2] FIG. 1 is a perspective view of an emergency exit light according to a first embodiment. [Diagram 3] FIG. 2 is an exploded perspective view of the emergency exit light according to the first embodiment. [Figure 4] 4A to 4C are diagrams illustrating an example in which the visibility of an emergency exit light is improved by the lighting control system according to the first embodiment. [Diagram 5] FIG. 13 is a diagram for explaining control in each emergency case. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] A lighting control system and a lighting controller according to the present embodiment will be described with reference to the drawings. The same or corresponding components are designated by the same reference numerals, and repeated description may be omitted.

[0015] Embodiment 1 Fig. 1 is a block diagram showing the configuration of a lighting control system 100 according to the first embodiment. The lighting control system 100 includes a general lighting fixture system 101 including a plurality of general lighting fixtures 12, and an emergency light system 102 including a plurality of emergency lights 20. The emergency lights 20 are, for example, emergency lights with built-in batteries. The lighting control system 100 may further include an emergency lighting fixture system including emergency lighting fixtures, indicator lights, spotlights, etc. The lighting controller 10 controls the plurality of general lighting fixtures 12 and the plurality of emergency lights 20.

[0016] In the following, a state where no disaster such as fire or earthquake has occurred will be referred to as normal, and a state where a disaster has occurred will be referred to as abnormal. A state where there is a commercial power supply will be referred to as normal, and a state where there is no commercial power supply will be referred to as blackout. A state where either a disaster such as fire or earthquake or a blackout has occurred will be referred to as emergency, and a state where neither a disaster nor a blackout has occurred will be referred to as normal.

[0017] The general lighting fixture 12 is supplied with power source 14, such as a commercial power source, and is turned on under normal circumstances to illuminate floors, desk surfaces, etc. Even in the event of an abnormality such as a fire, the general lighting fixture 12 remains on as long as there is no power outage. The general lighting fixture 12 provides illuminance suitable for or required for the user's work. The emergency exit light 20 is supplied with power source 14 and is turned on under normal circumstances. The emergency exit light 20 continues to be turned on even during a power outage thanks to its built-in storage battery.

[0018] The lighting control system 100 communicates with an automatic fire alarm system 200, which is an external system. The automatic fire alarm system 200 includes a plurality of detectors 54 installed within the facility. The detectors 54 include fire detection sensors and detection circuits. The fire detection sensors are heat detection or smoke detection types. In the automatic fire alarm system 200, heat detection and smoke detection fire detection sensors may be used in combination. Information detected by the fire detection sensors is transmitted to a control device of the automatic fire alarm system 200 via the detection circuit as fire occurrence information and fire occurrence location information. The control device transmits the fire occurrence information and fire occurrence location information to the lighting control system 100.

[0019] Fig. 2 is a perspective view of the exit light 20 according to the first embodiment. Fig. 3 is an exploded perspective view of the exit light 20 according to the first embodiment. Figs. 2 and 3 show an exit light called an emergency exit light as an example of the exit light 20. Other examples of the exit light 20 include passageway exit lights that indicate evacuation directions with arrows, seating exit lights in movie theaters and the like, and stairway exit lights installed in stairwells.

[0020] The display board 21 displays the guidance direction. The light source unit 22 illuminates the display board 21. The light source unit 22 includes, for example, an LED module board using an LED as a light source. Visible light emitted from the light source unit 22 enters a light guide plate 36 provided on the back surface of the display board 21. In the light guide plate 36, the light is diffused so that the brightness of the display board 21 becomes uniform. As a result, the display board 21 is illuminated from the back surface and lights up brightly as illumination. In this way, the light source unit 22 is, for example, an edge-light type backlight.

[0021] During normal use, the emergency light 20 is lit by the power source 14. The emergency light 20 incorporates a storage battery 25 and a charging circuit that converts the power source 14 into AC / DC to charge the storage battery 25. The storage battery 25 is maintained in a charged state when there is a commercial power supply, and is generally maintained in a fully charged state. When a power outage occurs, the emergency light 20 cannot receive power from the power source 14. Therefore, the emergency light 20 detects the power outage and switches the power source of the light source unit 22 from the power source 14 to the storage battery 25 by a switching circuit that switches the power source to the storage battery 25. Therefore, the emergency light 20 can continue to be lit for a predetermined period of time even during a power outage, in addition to being lit during normal use. The emergency light 20 may continue to be lit by being powered by an external emergency power supply device during a power outage.

[0022] The storage battery 25 is connected to a storage battery connector 26. A charging circuit, a switching circuit, a lighting circuit for lighting the light source unit 22 with power from the power source 14 or the storage battery 25, and a control unit for controlling each circuit are provided in a lighting unit 27. An apparatus body 23, which is the housing of the emergency light 20, has an opening on at least one side. The apparatus body 23 houses the storage battery 25 and the lighting unit 27. In addition, an automatic inspection switch 28 for automatically inspecting the capacity of the storage battery 25, an inspection switch 29 for inspection, a remote control light receiving unit 30 for receiving a signal from a remote control, and a monitor 31 for monitoring the status of the emergency light 20 are provided on the bottom surface of the apparatus body 23.

[0023] Furthermore, the fixture body 23 is provided with power supply holes 32, 33 that are used when mounting the emergency light 20 to a ceiling or wall that is to be mounted. The power supply holes 32, 33 are knockouts. A power supply terminal block 35 for supplying power to the lighting unit 27 and the power supply 14 are electrically connected by wiring via the power supply holes 32, 33. The emergency light 20 is mounted to the ceiling with a ceiling mounting bracket 38 and a hexagonal nut 37. When mounting the emergency light 20 to a wall, a mounting hole 34 is used. The mounting hole 34 is a knockout.

[0024] In addition, the emergency exit light 20 may be of a backlight type in which a fluorescent lamp is provided on the back side of the display board 21.

[0025] The control of this embodiment will now be described. In this embodiment, the lighting controller 10 dims the general lighting fixtures 12 when an abnormality occurs, compared to normal times. In this case, the lighting controller 10 keeps the emergency lights 20 lit at the same brightness both in normal times and when an abnormality occurs. The lighting controller 10 receives a signal notifying the occurrence of an abnormality from an external system, for example, and dims the general lighting fixtures 12 compared to normal times.

[0026] The communication unit 10c of the lighting controller 10 receives a signal notifying the occurrence of an abnormality from an external system. In the example of FIG. 1, the external system is an automatic fire alarm system 200, and the signal notifying the occurrence of an abnormality is fire occurrence information and occurrence location information. When the communication unit 10c receives this signal, the control unit 10a of the lighting controller 10 dims the general lighting fixtures 12 more than usual. Specifically, the control unit 10a transmits a dimming command to the address of the general lighting fixture 12 to be controlled according to a pre-stored program.

[0027] The functions of the control unit 10a and the communication unit 10c can be realized by a microcomputer, a processor, etc. The programs and addresses of the general lighting fixtures 12 are stored in the storage unit 10b. The storage unit 10b can be realized by a memory such as a non-volatile memory.

[0028] Fig. 4 is a diagram illustrating an example in which the visibility of an emergency exit light 20 is improved by the lighting control system 100 according to the first embodiment. In the example of Fig. 4, a plurality of general lighting fixtures 12 are installed on the ceiling of an office or the like, and a lighting controller 10 (not shown) controls the turning on and off of the general lighting fixtures 12 as well as the light output. During normal times as shown in Fig. 4(a), the general lighting fixtures 12 maintain the desk surface illuminance at approximately 750 lx, which is an illuminance suitable for general office work.

[0029] When a fire occurs, the automatic fire alarm system 200 locates the location of the fire, sounds an alarm, and notifies the fire by voice. Fig. 4(b) shows a comparative example in which the luminance of the emergency exit lights 20 is increased when a fire occurs, compared to normal times, to improve the visibility of the emergency exit lights. In this case, the luminance of the general lighting fixtures 12 is the same during normal times and when a fire occurs.

[0030] FIG. 4(c) shows an example of control according to this embodiment. In this embodiment, the display surface luminance of the emergency light 20 does not change between normal and abnormal conditions. Meanwhile, the lighting controller 10 reduces the light output of the general lighting fixtures 12 in an abnormal condition compared to normal conditions. As a result, the background luminance of the emergency light 20 decreases, and the display surface luminance of the emergency light 20 increases relatively. This can improve the visibility of the emergency light 20. Note that by dimming the general lighting fixtures 12, the illuminance of the desk surface decreases significantly, making it difficult to continue working. This is not a particular problem in a situation where emergency evacuation is required due to an abnormality, as described below.

[0031] In this embodiment, since the general lighting fixtures 12 are dimmed in an emergency, there is no need to change the operation of the existing emergency exit lights 20 in the event of a disaster such as a fire or earthquake. Therefore, the visibility of the emergency exit lights 20 can be easily improved.

[0032] In the event of an abnormality, the general lighting fixtures 12 in all areas of the facility may be dimmed. Alternatively, only the general lighting fixtures 12 in an area where it is desirable to improve the visibility of the emergency exit lights 20 may be dimmed. The lighting controller 10 may dim, among the multiple general lighting fixtures 12, a predetermined general lighting fixture 12 near the emergency exit light 20, for example, more than normal in the event of an abnormality. The predetermined general lighting fixture 12 is, for example, a general lighting fixture 12 near the emergency exit light 20 among the general lighting fixtures 12 in the same room. Which general lighting fixture 12 is to be dimmed in the event of an abnormality is stored in the memory unit 10b.

[0033] The lighting controller 10 may store in advance in the storage unit 10b a correspondence relationship between the location of a fire and the general lighting fixtures 12 to be dimmed among the multiple general lighting fixtures 12. This correspondence relationship may be, for example, a relationship between each fire location and the address of the general lighting fixture 12 to be dimmed. When a fire occurs, the control unit 10a may refer to the correspondence relationship in the storage unit 10b and dim the general lighting fixture 12 corresponding to the location of the fire.

[0034] The lighting controller 10 may store in advance in the memory unit 10b a correspondence relationship between a plurality of cases, which are divided according to at least one of the earthquake intensity or the damage situation of the facility, and the general lighting fixtures 12 to be dimmed among the plurality of general lighting fixtures 12. For example, this correspondence relationship may be a correspondence relationship between each case and the address of the general lighting fixture 12 to be dimmed. When an earthquake occurs, the control unit 10a may refer to the correspondence relationship in the memory unit 10b and dim the general lighting fixture 12 corresponding to the current case.

[0035] Furthermore, when the abnormal state is released, the lighting controller 10 may return the dimmed general lighting fixtures 12 to their normal lighting state. In other words, when the signal notifying the abnormality from the automatic fire alarm system 200 disappears or a return signal is input, the lighting controller 10 returns the general lighting fixtures 12 to their normal control state. The same applies to the return when a fire is detected as a false alarm or a malfunction.

[0036] Furthermore, the external system is not limited to the automatic fire alarm system 200, but may be a nationwide instantaneous warning system (J-Alert), an emergency earthquake warning system, or other systems. When an earthquake occurs, earthquake occurrence information collected by the nationwide instantaneous warning system, the emergency earthquake warning system, or the like is input to the lighting control system 100, and the lighting controller 10 may dim the general lighting fixtures 12 corresponding to the case according to the seismic intensity, the damage situation, and the like. The lighting controller 10 communicates with these multiple external systems, and may dim the general lighting fixtures 12 more than usual when it receives a signal notifying the occurrence of an abnormality from any of the external systems.

[0037] It has been revealed that the visibility of emergency lights is correlated with the display surface luminance and the background luminance around where the emergency lights are installed. For example, when the surroundings are dark and the background luminance is low, around 30cd / m2, the visibility is high when the display surface luminance of the emergency lights is low, around 200cd / m2, but high luminance of around 800cd / m2 is too bright and visibility is reduced. Conversely, when the background luminance is high, around 1,000cd / m2, such as in an underground shopping arcade or a department store sales floor, visibility is low when the display surface luminance is low, around 200cd / m2, and high visibility is high when the display surface luminance is high, around 800cd / m2.

[0038] Under normal circumstances, the emergency exit lights 20 are always on for the purpose of letting many people who visit the facility know the location or direction of the emergency exits in advance, which is a so-called learning effect. When a power outage occurs, all the general lighting fixtures 12 are turned off, and the emergency lighting fixtures such as the emergency exit lights 20 are turned on by the storage battery 25 or an external power source. When the general lighting fixtures 12 are turned off, the background luminance of the emergency exit lights 20 is significantly reduced, and as described above, the optimal display surface luminance is reduced. For this reason, the emergency exit lights 20 are turned on at a low luminance of about 100 to 300 cd / m2 to ensure proper visibility during a power outage.

[0039] In this embodiment, when an abnormality such as a fire occurs, but a power outage does not occur, the general lighting fixtures 12 are dimmed. This improves the visibility of the emergency exit lights 20 that are turned on at low brightness to ensure proper visibility during a power outage. In addition, in this embodiment, the display surface brightness of the emergency exit lights 20 is not increased, so that a decrease in visibility when the background brightness is low can be suppressed.

[0040] FIG. 5 is a diagram for explaining control for each emergency case. Disasters such as fires and earthquakes occur as events independent of power outages. Therefore, abnormal states in which fires, earthquakes, etc. occur include a power outage state in which power is stopped and a normal state in which there is no power outage. FIG. 5 shows the states of the general lighting fixtures 12, emergency lights 20, and emergency lighting fixtures for each presence or absence of a power outage, fire, or earthquake. Note that the disasters shown in FIG. 5 are only examples, and the general lighting fixtures 12 may be controlled by alerts transmitted from various organizations, such as an alert transmitted from the Fire and Disaster Management Agency through the nationwide instantaneous alert system (J-Alert) and an alert regarding a tsunami or weather issued by the Japan Meteorological Agency.

[0041] In Fig. 5, ◯ indicates that it applies, and × indicates that it does not apply. No. 1 indicates that there is no power outage, fire, or earthquake. In this state, there is no need to evacuate, and the emergency lights 20 are on for the learning effect. In addition, the general lighting fixtures 12 are on, and the emergency lighting fixtures are off.

[0042] Nos. 2, 3, 4, and 5 are cases where a power outage has occurred. Because the general lighting fixtures 12 are turned off due to the power outage, the background luminance of the emergency exit lights 20 is low. No. 2 is a state where only a power outage has occurred, such as when the power transmission system malfunctions due to a lightning strike or the like. Whether or not to evacuate at this time depends on the situation of the occupants or the facility. No. 3 is a state where a power outage and a fire have occurred, and it is necessary to evacuate to an emergency exit under the light of the emergency lighting fixtures and by following the guidance indications of the emergency exit lights 20. In the cases of power outages and earthquakes in Nos. 4 and 5, the decision to evacuate must be made after the shaking has subsided. In Nos. 2 to 5, the general lighting fixtures 12 are turned off, so the surroundings are dark. At this time, the emergency exit lights 20 may be kept on at the same luminance as usual, or may be dimmed to ensure visibility. Even when dimmed, the high relative luminance ensures high visibility.

[0043] Next, we will explain No. 6 to No. 8, which do not have a power outage. In other words, No. 6 shows a case where a fire occurred, No. 7 shows an earthquake, and No. 8 shows a case where a fire and an earthquake occurred in a situation where the general lighting fixture 12 continues to be on and the surroundings are bright. In addition, the emergency lighting fixture is turned off. In the past, how to improve the visibility of the emergency lights in such a situation has been considered, and devices have been proposed that have a function to increase the display surface brightness of the emergency lights 20, and a function to notify by flashing, sound, etc. In addition, in the past, it was generally thought that the brightness of the general lighting fixture 12 should be maintained for evacuation in the event of a disaster, and no consideration was given to reducing the illuminance of the general lighting fixture 12.

[0044] In contrast, in this embodiment, contrary to the conventional technique, the brightness of the emergency exit lights 20 is not changed, but the general lighting fixtures 12 are dimmed to darken the surroundings. This allows the emergency exit lights 20 to stand out relatively. This makes the evacuation route clear, and by taking advantage of people's tendency to move towards brighter areas, it is possible to reliably guide people to the evacuation route. Note that the general lighting fixtures 12 are turned off during a power outage, but this is the result of the power supply being cut off, and is different from the intended dimming or turning off of the lights in Nos. 6 to 8.

[0045] In addition, in order to maintain the efficiency of office work that should be suspended during the evacuation phase, it is not necessary to maintain the desk illuminance at 750lx. Also, in the event of a power outage, it is stipulated by law that evacuation should be carried out with a minimum illuminance of 1lx or 2lx in the passageway. For this reason, evacuation is possible even if the general lighting fixtures 12 are dimmed as long as the illuminance is equal to or higher than the legal requirement, and it is considered that the importance of maintaining the illuminance of the general lighting fixtures 12 is low. Although it has been explained that the illuminance in the passageway must be equal to or higher than the legal requirement, it is sufficient as long as the illuminance is such that the passageway can be seen.

[0046] The illuminance of the general lighting fixtures 12 in the dimmed state should be adjusted as appropriate depending on the presence and number of fixtures in the facility that may fall over, the difficulty of passing through evacuation routes where items are expected to be scattered in the event of an earthquake, etc., or the location of hazardous material storage facilities. However, the illuminance of the general lighting fixtures 12 in the dimmed state should be 1lx or 2lx or more, which is also the installation standard for emergency lighting fixtures. In other words, it is recommended that the general lighting fixtures 12 be dimmed so that the illuminance on the floor of the evacuation route is 1lx or 2lx or more when the general lighting fixtures 12 are dimmed.

[0047] Incidentally, 1 lx or 2 lx is the minimum illuminance required for evacuation, and the illuminance on a desk surface in an office is usually about 750 lx. In order to improve the visibility of the emergency exit light 20, the effect of this embodiment can be obtained by setting the light output of the general lighting fixture 12 on the ceiling to about 20% to 50%. In this way, it can be said that the dimming rate of the general lighting fixture 12 in the dimmed state is sufficient if it is 50% or less. Incidentally, the dimming rate of the general lighting fixture 12 that can obtain the effect of this embodiment varies depending on the color of the wall surface, the unevenness of the installed fixtures, the visible light spectral reflectance, and the like. It is preferable that the dimming rate of the general lighting fixture 12 in the dimmed state is confirmed and set in advance in the actual facility, assuming the occurrence of a disaster.

[0048] In recent lighting control systems, in addition to dimming and color adjustment, complex control such as area control and cooperation with other equipment or systems is possible. In this embodiment, in the evacuation phase when a disaster occurs, the dimming function of the lighting control system 100 is utilized to lower the light output of the general lighting fixtures 12 in a state where there is no power outage, thereby improving the visibility of the emergency exit lights 20. Such control to lower the background luminance can be performed by the lighting control system 100 that controls the general lighting fixtures 12, and no new capital investment is required. In other words, this embodiment can be realized by changing the program of the lighting controller 10, as long as a lighting controller 10 capable of dimming the general lighting fixtures 12 is installed. In this way, in this embodiment, even in an existing facility where the emergency exit lights 20 have already been installed in accordance with the law, the safety of evacuation can be improved without spending money on renewal such as replacing or improving the emergency exit lights 20.

[0049] Furthermore, since disasters can be detected using information from an existing automatic fire alarm system 200, a nationwide instantaneous warning system, an emergency earthquake alert system, etc., there is no need to incorporate sensors for detecting fires, earthquakes, etc. into the lighting control system 100.

[0050] If the general lighting fixtures 12 are not controlled by the lighting controller 10, it is necessary to install a new lighting controller 10. In this case, it is advisable to introduce the control of this embodiment at the same time as installing the lighting control system 100 for the purpose of saving energy. This allows the investment to be recovered through energy savings achieved by introducing the lighting control system 100. The system of this embodiment may also be introduced when installing a new emergency exit light 20, or when constructing a new building or facility. Furthermore, a system having the general lighting fixtures 12 and the lighting controller 10 of this embodiment may also be introduced when updating the emergency exit light 20 to one with additional functions such as a flashing device or a voice output device.

[0051] The emergency exit light 20 of this embodiment is not limited to the one shown in Figs. 2 and 3, but may be an emergency lighting fixture as well, or may be a flashing emergency exit light or a flashing emergency exit light with an emergency sound.

[0052] In this embodiment, an example has been described in which the general lighting fixtures 12 are dimmed when an abnormality occurs. However, if there are indicator lights for guidance or spotlights for illuminating exhibits in addition to the general lighting fixtures 12, it is preferable that these be dimmed in conjunction with each other.

[0053] In the example of Fig. 1, the lighting controller 10 controls the emergency lights 20. However, the lighting controller 10 is not limited to this and may not control the emergency lights 20 as long as it can dim the general lighting fixtures 12 when an abnormality occurs.

[0054] The above embodiments are presented as examples and are not intended to limit the scope of the invention. The technical features described in the embodiments can be combined, substituted, modified, or omitted without departing from the spirit of the embodiments. These various embodiments are included within the scope and spirit of the invention and are included in the scope of the claims.

[0055] Various aspects of the present disclosure are summarized below as appendices. (Appendix 1) General lighting equipment, With emergency exit lights, A lighting controller that dims the general lighting fixture when an abnormality occurs, compared to normal lighting; A lighting control system comprising: (Appendix 2) The lighting control system described in Appendix 1, characterized in that the lighting controller turns on the emergency lights at the same brightness under normal and abnormal conditions. (Appendix 3) A plurality of the general lighting fixtures are provided, The lighting control system according to claim 1 or 2, wherein the lighting controller dims a predetermined general lighting fixture among the plurality of general lighting fixtures near the emergency light in the event of an abnormality compared to normal lighting. (Appendix 4) A plurality of the general lighting fixtures are provided, The lighting control system described in Appendix 1 or 2, characterized in that the lighting controller maintains a correspondence relationship between a fire location and a general lighting fixture among the plurality of general lighting fixtures to be dimmed, and in the event of a fire, refers to the correspondence relationship and dims the general lighting fixture corresponding to the fire location. (Appendix 5) A plurality of the general lighting fixtures are provided, The lighting controller maintains a correspondence relationship between a plurality of cases, which are divided according to at least one of the seismic intensity of an earthquake or the damage status of a facility, and which general lighting fixtures among the plurality of general lighting fixtures should be dimmed, and when an earthquake occurs, refers to the correspondence relationship and dims the general lighting fixture corresponding to the case. (Appendix 6) The lighting control system according to any one of appendixes 1 to 5, wherein the lighting controller returns the dimmed general lighting fixtures to their normal lighting state when the abnormal state is cleared. (Appendix 7) The lighting control system described in any one of Appendices 1 to 6, characterized in that when the lighting controller receives a signal from an external system notifying of the occurrence of an abnormality, it dims the general lighting fixtures more than usual. (Appendix 8) 8. The lighting control system of claim 7, wherein the external system includes an automatic fire alarm system. (Appendix 9) The lighting control system according to claim 8, wherein the fire detection sensor of the automatic fire alarm system is a heat sensing type. (Appendix 10) A lighting control system as described in Appendix 8, characterized in that the fire detection sensor of the automatic fire alarm system is of a smoke detection type. (Appendix 11) The lighting control system described in Appendix 8, wherein the automatic fire alarm system uses both heat detection and smoke detection fire detection sensors. (Appendix 12) A lighting control system as described in any one of appendices 7 to 11, characterized in that the external system includes a nationwide instantaneous warning system. (Appendix 13) The lighting control system according to any one of claims 1 to 12, characterized in that when the general lighting fixtures are dimmed, the illuminance of the floor serving as an evacuation route is 1 lx or more. (Appendix 14) A communication unit that receives a signal notifying the occurrence of an abnormality from an external system; a control unit that, when the communication unit receives the signal, causes the general lighting fixture to dim more than normal; A lighting controller comprising: [Explanation of symbols]

[0056] 10 lighting controller, 10a control unit, 10b memory unit, 10c communication unit, 12 general lighting fixture, 14 power supply, 20 emergency exit light, 21 display panel, 22 light source unit, 23 fixture body, 25 storage battery, 26 storage battery connector, 27 lighting unit, 28 automatic inspection switch, 29 inspection switch, 30 remote control light receiver, 31 monitor, 32, 33 power supply hole, 34 mounting hole, 35 power supply terminal block, 36 light guide plate, 37 hexagonal nut, 38 ceiling mounting bracket, 54 detector, 100 lighting control system, 101 general lighting fixture system, 102 emergency exit light system, 200 automatic fire alarm system

Claims

1. General lighting fixtures, Emergency lights and A lighting controller that reduces the brightness of the aforementioned general lighting fixture to a level lower than normal when an abnormality occurs, A lighting control system characterized by comprising the following features.

2. The lighting control system according to claim 1, characterized in that the lighting controller illuminates the emergency lights at the same brightness during normal and abnormal conditions.

3. Equipped with multiple general lighting fixtures, The lighting control system according to claim 1 or 2, characterized in that the lighting controller reduces the brightness of predetermined general lighting fixtures near the emergency exit sign in the event of an abnormality.

4. Equipped with multiple general lighting fixtures, The lighting control system according to claim 1 or 2, characterized in that the lighting controller maintains a correspondence between the location of a fire and a general lighting fixture among the plurality of general lighting fixtures to be dimmed, and in the event of a fire, refers to the correspondence and dims the general lighting fixture corresponding to the location of the fire.

5. Equipped with multiple general lighting fixtures, The lighting control system according to claim 1 or 2, characterized in that the lighting controller maintains a correspondence between a plurality of cases divided according to at least one of the seismic intensity of an earthquake or the extent of damage to a facility, and a plurality of general lighting fixtures to be dimmed, and when an earthquake occurs, it refers to the correspondence and dims the general lighting fixtures corresponding to the cases.

6. The lighting control system according to claim 1 or 2, characterized in that when the abnormal condition is resolved, the lighting controller returns the dimmed general lighting fixture to its normal lighting state.

7. The lighting control system according to claim 1 or 2, characterized in that when the lighting controller receives a signal from an external system notifying it of an abnormality, it dims the general lighting fixture to a level lower than normal.

8. The lighting control system according to claim 7, characterized in that the external system includes a nationwide instantaneous warning system.

9. The lighting control system according to claim 1 or 2, characterized in that when the general lighting fixtures are dimmed, the illuminance of the floor surface that serves as an escape route is 1 lx or more.

10. A communication unit that receives signals from an external system notifying of the occurrence of an anomaly, When the communication unit receives the signal, a control unit that dims the general lighting fixture to a level lower than normal, A lighting controller characterized by having the following features.

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