JP2024008576A - Illuminating device and illumination control system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an illuminating device and an illumination control system capable of urging a user to perform discharging.

SOLUTION: An illuminating device comprises: a light source; a battery for turning on the light source at power failure; a charging circuit that supplies a charging current to the battery to charge the battery; and a control circuit that performs first notification for urging a user to discharge the battery. Whether or not the first notification is performed is decided based on the charging current, a temperature of the battery, and a charging time of the battery.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2024,JPO&INPIT

Description

The present disclosure relates to lighting devices and lighting control systems.

Patent Document 1 discloses a lighting device equipped with a nickel-metal hydride battery. In this lighting device, the nickel metal hydride battery is appropriately switched between trickle charge control in which the battery is charged by trickle charge, and large current charge control in which the nickel metal hydride battery is charged at a larger charging current value than trickle charge. This makes it possible to suppress a decrease in discharge capacity due to a decrease in charge acceptance of the nickel-hydrogen battery, and to improve the charging efficiency of the nickel-hydrogen battery.

Japanese Patent Application Publication No. 2011-171161

Emergency lights and guide lights are disaster prevention lighting devices that provide brightness and indicate evacuation routes during power outages. These lighting devices are equipped with batteries, and during regular use, the batteries are charged in case of a power outage. In recent years, nickel-metal hydride batteries are often used as such batteries. The charging method for nickel metal hydride batteries is generally trickle charging. Trickle charging of emergency lights or guide lights is performed without interruption at a current value of, for example, 1/20 It to 1/30 It.

Patent Document 1 suppresses battery deterioration due to high temperatures. However, in nickel metal hydride batteries, another problem may arise due to continuous trickle charging. In a nickel metal hydride battery, when a fully charged state continues and an overcharged state occurs, the internal resistance of the battery increases and a drop in battery voltage may occur. It is known that the drop in battery voltage becomes more pronounced as the charging current value becomes larger and the charging time becomes longer in a low-temperature environment. Such an increase in internal resistance can be eliminated by appropriate discharge.

In general, it is recommended that emergency lights and guide lights undergo legal inspections every six months to once a year. However, inspections that involve discharging are often not performed frequently, and users only notice problems with the batteries during inspections. Furthermore, if the internal resistance of the battery has already increased at the time of inspection, the discharge time until the battery voltage reaches a voltage that stops discharging will be shortened. At this time, even though the battery can be refreshed by discharging, there is a risk that the battery will be judged to have reached the end of its lifespan.

The present disclosure has been made to solve the above-mentioned problems, and aims to provide a lighting device and a lighting control system that can prompt a user to discharge electricity.

A lighting device according to the present disclosure includes a light source, a battery that turns on the light source during a power outage, a charging circuit that supplies charging current to the battery to charge the battery, and a battery that prompts a user to discharge the battery. a control circuit that performs a first notification, and whether or not to perform the first notification is determined based on the charging current, the temperature of the battery, and the charging time of the battery.

A lighting control system according to the present disclosure includes a lighting device and a control device communicating with the lighting device, and the lighting device includes a light source, a battery that turns on the light source during a power outage, and a charging current to the battery. a charging circuit that supplies a charge current to charge the battery, and provides a first notification to prompt the user to discharge the battery, and whether or not to perform the first notification depends on the charging current and the battery. is determined based on the temperature of the battery and the charging time of the battery.

In the lighting device and lighting control system according to the present disclosure, a notification to prompt the user to discharge the battery is provided based on the charging current, the temperature of the battery, and the charging time of the battery. Therefore, it becomes possible to urge the user to discharge.

1 is a perspective view of an emergency light according to Embodiment 1. FIG. FIG. 2 is a side view of the emergency light according to the first embodiment. FIG. 3 is a bottom view of the emergency light according to the first embodiment. FIG. 3 is a diagram illustrating display standards on monitors. 1 is a circuit block diagram of an emergency light according to Embodiment 1. FIG. It is a figure showing an example of a discharge waveform of an emergency light. FIG. 3 is a diagram illustrating a voltage drop phenomenon. FIG. 3 is a diagram illustrating the relationship between a voltage drop phenomenon and temperature. 3 is a flowchart showing the operation of the emergency light according to the first embodiment. FIG. 3 is a diagram showing a remote control according to a second embodiment. FIG. 3 is a circuit block diagram of an emergency light according to a third embodiment. FIG. 7 is a diagram showing an example of a discharge waveform when discharge ends in a short time due to an increase in internal resistance. It is a figure which shows the example of the discharge waveform in the next discharge when discharge is complete|finished in a short time.

A lighting device and a lighting control system according to each embodiment will be described with reference to the drawings. Identical or corresponding components may be given the same reference numerals and repeated descriptions may be omitted.

Embodiment 1.
FIG. 1 is a perspective view of an emergency light 1 according to the first embodiment. FIG. 2 is a side view of the emergency light 1 according to the first embodiment. FIG. 3 is a bottom view of the emergency light 1 according to the first embodiment. Although the following explanation will mainly be given using emergency lights as an example, the lighting device of this embodiment may be any disaster prevention lighting device that turns on in an emergency, or may be a guide light. Emergency lights are also called emergency lighting equipment. In addition, an emergency situation refers to a state in which there is no power supply from a commercial power source and there is a power outage, and a normal use state refers to a state in which there is no power outage.

The emergency light 1 includes a main body 4, a spring 7 for attaching the emergency light 1 to the ceiling, a lamp 6 as a light source to be lit in an emergency, and a frame 5 for attaching the lamp 6 to the main body 4. The main body 4 includes a lighting unit 2, a battery 3, and a terminal block 8 for receiving power. The battery 3 lights up the lamp 6 during a power outage. In the frame 5, an automatic inspection switch 9, an inspection switch 10, monitors 11 for displaying the operating status of the emergency light 1, and a remote control light receiving section 12 are arranged. The monitors 11 include a charging monitor 11a, a lamp monitor 11b, and an inspection monitor 11c. The charging monitor 11a, the lamp monitor 11b, and the inspection monitor 11c are, for example, green, red, and orange LEDs, respectively.

FIG. 4 is a diagram illustrating the display standards of the monitors 11. FIG. 4 shows the emergency lighting equipment technical standards (JIL5501) of the Japan Lighting Industry Association. In this embodiment, orange color is used as the inspection monitor 11c, and when the battery 3 reaches the end of its life, the inspection monitor 11c is turned on or off. The inspection monitor 11c corresponds to an inspection monitor light source.

FIG. 5 is a circuit block diagram of the emergency light 1 according to the first embodiment. The emergency light 1 includes a lighting unit 2, a battery 3, and a lamp 6. In the lighting unit 2, a rectifier circuit 22 rectifies the commercial power supply 21. The DC-DC converter 23 converts the rectified commercial power voltage. The charging circuit 25 is supplied with power from the DC-DC converter 23 and supplies charging current to the battery 3 to charge the battery 3. The control circuit 27 controls the lighting unit 2. Control power generation circuit 26 generates power Vcc for control circuit 27 from the output side of DC-DC converter 23 or from battery 3. The means for generating the power supply Vcc is not limited, and it may be generated from the output side of the DC-DC converter 29 during a power outage. The DC-DC converter 29 boosts the voltage of the battery 3 and lights the lamp 6.

The monitors 11 are connected to the control circuit 27 . Inspection switch 10 issues a signal for inspecting battery 3. The automatic inspection switch 9 issues an automatic inspection signal for automatically inspecting the battery 3. The remote control signal receiving circuit 35 is connected to the remote control light receiving section 12 described above, and receives a signal from the remote control.

The control circuit 27 is composed of, for example, a microcomputer. In the control circuit 27, the charging current setting output 24 controls the charging current of the charging circuit 25. The DC-DC converter control circuit unit 30 generates, for example, an operation signal for starting or stopping the operation of the DC-DC converter 29, or a command value signal such as an output voltage value or an output current value output by the DC-DC converter 29. is output to control the operation of the DC-DC converter 29. The remote control signal receiving section 36 processes the signal from the remote control signal receiving circuit 35. The automatic inspection switch signal input section 37 processes the automatic inspection signal from the automatic inspection switch 9. The inspection switch signal input section 38 processes the signal from the inspection switch 10. The output voltage detection unit 41 detects the output voltage of the DC-DC converter 29 during emergency lighting.

Battery voltage detection section 42 detects battery voltage. The battery monitor signal output unit 43 outputs a battery charging detection signal to the charging monitor 11a to turn on, blink, or turn off, thereby notifying the outside whether or not the battery 3 is being charged normally. When detecting an abnormality in the lamp 6, the lamp monitor signal output unit 44 turns on or off the lamp monitor 11b and notifies the outside. The inspection monitor output signal unit 45 turns the inspection monitor 11c on or off, and notifies the outside whether or not inspection is being performed. The cutoff circuit control section 46 outputs a signal for controlling a cutoff circuit 47 that turns on/off the output of the DC-DC converter 23. The power outage detection unit 48 monitors the output of the DC-DC converter 23 and detects whether commercial power 21 is being supplied.

The lighting unit 2 is provided with a thermistor 19 for temperature detection. The thermistor 19 is provided near the battery 3 or inside the battery pack, and detects the temperature of the battery 3. The temperature of the battery 3 does not have to be detected directly from the battery 3. The temperature of the battery 3 may be calculated by correcting the detected temperature based on the positional relationship between the battery 3 and the lighting unit 2, etc. The detected temperature of the battery 3 is inputted to the control circuit 27 by the temperature detection section 49.

Note that the control circuit 27 may be provided with a communication section 51 to communicate with an external control device 60. In this case, the emergency light 1 and the control device 60 constitute a lighting control system.

Next, the operation of the emergency light 1 will be explained. When the commercial power supply 21 is supplied, the DC-DC converter 23 converts the voltage rectified by the rectifier circuit 22 into a voltage sufficient to charge the battery 3. The output voltage of the DC-DC converter 23 is further converted into a voltage suitable as a control power source by a control power generation circuit 26, and is supplied as a power source Vcc to a control circuit 27. At this time, the cutoff circuit control section 46 outputs a signal that connects the cutoff circuit 47. The output voltage of the DC-DC converter 23 is input to the charging circuit 25, and the battery 3 is charged. Note that the default state of the cutoff circuit 47 during normal use is the connected state. At this time, since the power failure detection unit 48 detects the voltage, the power failure detection unit 48 determines that there is no power outage. Furthermore, since the battery 3 is being charged, the charging monitor 11a is lit. Hereinafter, this state will be referred to as a charging state. Note that the charging circuit 25 can output an arbitrary charging current using the charging current setting output 24.

When the supply of commercial power 21 is stopped due to a power outage or the like, the output of the DC-DC converter 23 is lost. Therefore, the power outage detection unit 48 determines that there is a power outage. Furthermore, since the battery 3 is not being charged, the charge monitor 11a is turned off. The battery 3 supplies power to the control circuit 27 and also to the DC-DC converter 29. The DC-DC converter 29 boosts the battery voltage, supplies power to the lamp 6, and lights the lamp 6 with a preset current. Lighting the lamp 6 using the battery 3 is called emergency lighting. The lamp current detection circuit 34 feeds back the current flowing through the lamp 6 to the DC-DC converter 29. The DC-DC converter 29 controls the lamp current based on the fed back current so that the output of the lamp 6 reaches a predetermined target value. Note that the cutoff circuit 47 is in a cutoff state during a power outage. If there is no problem with the operation of the peripheral circuits, it is also possible to shift to the emergency lighting operation without interrupting the operation with the interrupter circuit 47 by stopping the operation of the DC-DC converter 23 or the like.

FIG. 6 is a diagram showing an example of the discharge waveform of the emergency light 1. To prevent over-discharging of the battery 3 and overheating of parts of the lighting unit 2, the DC-DC converter 29 stops operating and turns off the lamp 6 when the battery voltage becomes less than a predetermined extinguishing voltage. The discharge reference voltage shown in FIG. 6 refers to the input terminal voltage of an emergency power supply device supplied by a battery to ensure the performance required as an emergency lighting device. If the battery voltage is equal to or higher than the discharge reference voltage, the brightness of the lamp 6 can be ensured. The extinguishing voltage, which is the battery voltage for extinguishing the lamp 6, is set to a voltage lower than the discharge reference voltage.

Next, the operation when the automatic inspection switch signal input section 37 receives an automatic inspection signal from the automatic inspection switch 9 will be described. Upon receiving the automatic inspection signal, the control circuit 27 discharges the battery 3 to a predetermined determination voltage. This operation will be explained in more detail. When the control circuit 27 receives the automatic inspection signal, it confirms whether the battery has been continuously charged for a predetermined period of time or more, for example, 48 hours or more. In addition, in the case of a guide light, the predetermined time is, for example, 24 hours. If the battery has not been continuously charged for 48 hours or more, charging will continue without proceeding to automatic inspection. If the battery has been continuously charged for more than 48 hours, it will proceed to automatic inspection. At this time, the control circuit 27 shifts to a pseudo power outage mode for checking the battery 3, returns to the original charging state after a predetermined period of time, starts charging, and lights up the charging monitor 11a.

In the pseudo power outage mode, the cutoff circuit 47 is set to the cutoff state, and the battery 3 is discharged. This causes the lamp 6 to turn on in an emergency. If the battery voltage becomes lower than the determination voltage after a predetermined time has elapsed from the start of discharge, the control circuit 27 determines that the battery 3 is in good condition and returns to the charging state. This causes the lamp 6 to go out. Furthermore, the control circuit 27 notifies everyone that the inspection results are satisfactory by lighting the charging monitor 11a. If the battery voltage becomes lower than the determination voltage before a predetermined time has elapsed from the start of discharging, the control circuit 27 determines that the battery 3 has reached the end of its life, and at that point cancels the pseudo power outage mode and returns to the charging state. This causes the lamp 6 to go out. Further, the control circuit 27 makes it known that the battery 3 is at the end of its life by blinking the charge monitor 11a. Note that in the pseudo power outage mode, the cutoff circuit 47 is in a cutoff state. If there is no problem with the operation of the peripheral circuits, it is also possible to shift to the emergency lighting operation by stopping the operation of the DC-DC converter 23 or the like without interrupting the operation using the interrupting circuit 47.

The method of outputting the automatic inspection signal is not limited. For example, an automatic inspection signal may be output by pressing and holding the automatic inspection switch 9 for a long time. Further, by pressing the automatic inspection switch 9 once, the automatic inspection transition standby state is entered, and by pressing the automatic inspection switch 9 again during the automatic inspection transition waiting state, the automatic inspection signal may be output.

FIG. 7 is a diagram illustrating the voltage drop phenomenon. The positive electrode of a nickel-metal hydride battery exists as β-type nickel hydroxide before charging, and becomes β-type nickel oxyhydroxide near the full charge voltage after charging. When the fully charged state continues and becomes an overcharged state, the positive electrode changes to γ-type nickel oxyhydroxide. γ-type nickel oxyhydroxide has a crystal structure in which alkali metal ions or water molecules are incorporated between layers, and has a higher volume than β-type nickel oxyhydroxide. Therefore, when γ-type nickel oxyhydroxide is generated during charging, an expansion phenomenon of the positive electrode occurs, and the alkaline electrolyte held in the separator is absorbed, which may increase the internal resistance of the battery. As a result, as shown in FIG. 7, a drop in battery voltage corresponding to the product of internal resistance and discharge current occurs, and there is a possibility that emergency lights and guidance lights cannot be properly lit during a power outage. Furthermore, during inspection, due to an excessive drop in battery voltage, the determination voltage may be reached in a short period of time, and the battery may be erroneously determined to have reached the end of its life.

FIG. 8 is a diagram illustrating the relationship between voltage drop phenomenon and temperature. The temperature shown in FIG. 8 is the temperature when the battery is charged. The amount of voltage drop, that is, the amount of increase in internal resistance increases as the temperature of the battery 3 during charging becomes lower, and as the time of continuous charging increases. Further, the amount of voltage drop increases as the charging current value increases.

By appropriate discharge, the γ-type nickel oxyhydroxide returns to the β-type nickel oxyhydroxide. As a result, the electrolyte is released into the separator and returned to the positive electrode. Therefore, the internal resistance can be reduced and the dischargeable capacity can be restored. From the above, in emergency lights and guide lights that are particularly susceptible to overcharging due to trickle charging, it is important to discharge the battery appropriately to eliminate the γ-type nickel oxyhydroxide.

In contrast, in the present embodiment, the control circuit 27 provides a notification to prompt the user to discharge the battery 3. Whether or not to notify is determined based on the charging current, the temperature of the battery 3, and the charging time of the battery 3. As described above, the amount of increase in internal resistance is affected by the charging current, the temperature of the battery 3, and the charging time. By determining whether to give a notification based on the charging current, the temperature of the battery 3, and the charging time of the battery 3, it is possible to prompt the user to discharge at an appropriate timing. Therefore, the battery 3 of the emergency light 1 can be turned on in an emergency during a power outage.

For example, the control circuit 27 determines whether or not to notify. The charging current may be determined in advance depending on the model of the emergency light 1, or may be detected by the charging current setting output 24. The temperature of the battery 3 can be detected by the thermistor 19 and the temperature detection section 49. The charging time can be detected by the timer function of the control circuit 27, for example. The control circuit 27 determines whether or not to issue a notification based on the thus obtained data on the charging current, temperature of the battery 3, and charging time.

The control circuit 27 provides notification using the inspection monitor 11c, for example. Specifically, the control circuit 27 causes the inspection monitor 11c to turn on or blink using the inspection monitor output signal section 45 to notify that the battery 3 needs to be refreshed by discharging. In this embodiment, a case will be described in which the inspection monitor 11c is turned on.

FIG. 9 is a flowchart showing the operation of the emergency light 1 according to the first embodiment. First, the control circuit 27 checks the charging current value set according to the model of the emergency light 1 (step 1). The charging current value may be stored in advance in the memory of the control circuit 27 or the like. Next, the control circuit 27 checks the charging time (step 2). Next, the control circuit 27 checks the temperature of the battery 3 (step 3). Next, the control circuit 27 estimates the state of the battery 3 based on the data calculated from the charging current value, charging time, and temperature of the battery 3 (step 4), and determines whether refreshing is necessary (step 5). ). If no refresh is required, return to step 2. If refreshing is required, the inspection monitor 11c is turned on (step 6). The user can discharge the battery 3 in response to the notification from the inspection monitor 11c. When discharge occurs (step 7), the control circuit 27 turns off the inspection monitor 11c and cancels the notification state (step 8). If discharge is not performed, the inspection monitor 11c continues to be lit (step 6).

If it is automatically discharged when it is determined that refresh is necessary, there is a risk that it will not be able to turn on in an emergency during a power outage. In this embodiment, discharging is performed at the discretion of the administrator or inspector.

The characteristics of increase in internal resistance due to γ-type nickel oxyhydroxide differ depending on the type of each battery 3. For this reason, it is a good idea to acquire the basic data of the battery 3 and create a database. By inputting the database into the microcomputer program of the control circuit 27 in advance, the control circuit 27 can accurately determine whether or not discharge is necessary. By updating the program based on the performance of Battery 3 on the market, accumulated data, etc., it is possible to determine whether or not discharging is necessary with even greater precision.

Up to this point, the individual control method has been explained. In the individual control method, automatic inspection is completed with each individual emergency light 1. On the other hand, a centralized control method may be adopted. In the centralized control method, the control device 60 and each emergency light are connected via communication lines to form a lighting control system. In the lighting control system, each emergency light can be inspected based on an inspection instruction from the control device 60. The number of emergency lights included in the lighting control system is not limited.

The control device 60 is provided on the cloud, for example. The emergency light 1 transmits the charging current, the temperature of the battery 3, and the charging time to the control device 60. The control device 60 accumulates data on the charging current, data on the temperature of the battery 3, and data on the charging time of the battery 3, and determines whether to issue a notification to encourage discharging of the battery 3 based on the accumulated data. to decide. Thereby, it is possible to determine whether or not discharge is necessary with higher accuracy. If discharge is required, the control device 60 causes the control circuit 27 to notify.

Furthermore, a major factor in the increase in internal resistance can be that the user is not aware that the emergency lights and guide lights are exposed to low temperatures. For this reason, a sticker that changes the temperature when the temperature becomes low may be pasted on the emergency light 1 in advance. Thereby, it is possible to alert the user.

These modifications can be applied as appropriate to the lighting devices and lighting control systems according to the following embodiments. Note that the lighting device and lighting control system according to the following embodiments have many features in common with Embodiment 1, so the description will focus on the differences from Embodiment 1.

Embodiment 2.
FIG. 10 is a diagram showing a remote control 70 according to the second embodiment. The control circuit 27 may determine whether or not to issue a notification to encourage discharge in response to a command from the remote controller 70. When the user presses the confirmation button 70a on the remote controller 70, the control circuit 27 receives a signal from the remote controller 70 via the remote controller signal receiving circuit 35. Thereby, the control circuit 27 checks the state of the battery 3 and determines whether or not discharging is necessary. The method for determining whether discharge is necessary is the same as in the first embodiment.

If discharging is necessary, the control circuit 27 issues a notification to encourage discharging. This notification may be made by the inspection monitor 11c as in the first embodiment. The discharge can be performed, for example, by pressing the self-check button 70b.

The remote control of this embodiment is not limited to the one shown in FIG. 10, and may be a remote control with a liquid crystal monitor screen. For example, if the remote control 70 is a two-way communication type remote control with a monitor screen, the notification may be displayed on the remote control 70. A message may be displayed on the screen of the remote controller 70 to refresh the battery 3 by discharging it.

The screen of the remote control 70 may display whether or not the battery has been charged for a predetermined period of time during which inspection is possible.

Embodiment 3.
The control circuit 27 may turn on the lamp 6 with less power or current than at the time of a power outage, and issue a notification to encourage discharging. The control circuit 27 lights up the lamp 6 dimly, for example, to notify that the battery 3 is becoming abnormal, and urges it to discharge. The method for determining whether discharge is necessary is the same as in the first embodiment.

FIG. 11 is a circuit block diagram of the emergency light 201 according to the third embodiment. The emergency light 201 differs from the emergency light 1 in that the output of the DC-DC converter 23 is connected to the DC-DC converter 29, and a lamp on/off switch 39 is provided between the lamp 6 and the DC-DC converter 29. Further, the control circuit 27 is further provided with a lamp on/off control signal output section 52 . The other configurations are similar to those of the first embodiment.

The DC-DC converter 23 corresponds to a common power supply circuit that is supplied with power from the commercial power supply 21 and supplies power to the charging circuit 25. The DC-DC converter 29 corresponds to an emergency lighting circuit that receives power from the battery 3 and lights the lamp 6. At the time of notification for prompting discharge, the DC-DC converter 23 supplies power to the DC-DC converter 29, so that the lamp 6 is turned on. Such control is performed by the DC-DC converter control circuit section 30.

Furthermore, in a configuration like the emergency light 201, the lamp 6 may be turned on even if the DC-DC converter 29 is not operated, depending on the relationship between the battery voltage and the lighting voltage of the lamp 6. For this reason, it is preferable to turn off the lamp on/off switch 39 using the lamp on/off control signal output unit 52 except during emergency lighting and when notifying to prompt discharge. This can prevent unnecessary lighting. The lamp on/off switch 39 is turned on at the time of emergency lighting and at the time of notification to prompt discharge.

By not lighting the lamp 6 using the battery 3 when notifying the user to discharge the battery, the amount of charge in the battery 3 can be secured in preparation for a power outage.

Embodiment 4.
In this embodiment, similarly to Embodiment 3, the control circuit 27 lights the lamp 6 with less power or current than at the time of a power outage, and issues a notification to encourage discharging. At the time of this notification, the lamp 6 may be supplied with power from the battery 3 and turned on. The state of the emergency light 1 at this time is the same as that at the time of discharge due to inspection. This makes it possible to refresh the battery 3 while providing notification.

Furthermore, in a state where the internal resistance is increasing, if the discharge current is large, the amount of voltage drop becomes large. For this reason, there is a risk that the battery voltage will drop excessively and the lamp 6 will go out. On the other hand, at the time of notification for prompting discharge in this embodiment, the lamp 6 is dimly lit. Therefore, the discharge current from the battery 3 may be small. Therefore, stopping of discharge can be suppressed, and sufficient refreshment can be achieved.

Note that the voltage value of the drop voltage is determined by the product of the resistance value of the internal resistance and the current value of the discharge current. Therefore, instead of reducing the discharge current, the extinguishing voltage itself may be set low only during refresh. Thereby, sufficient discharge can be performed.

Embodiment 5.
A notification for prompting discharge may be displayed on the external control device 60. For example, a message may be displayed on the monitor screen of the control device 60, which is a control panel for centralized control, to refresh the battery 3 by discharging it. At this time, the emergency light 1 may also be notified using any of the methods in the first to fourth embodiments. Moreover, the charging current, the temperature of the battery 3, and the charging time may be transmitted from the emergency light 1 to the control panel, and the control panel may store the received data in the cloud.

Embodiment 6.
Even if discharging is performed due to a power outage or inspection, if the internal resistance of the battery 3 is large, the voltage will drop significantly, so the light may go out after only a few minutes of discharging, for example. FIG. 12 is a diagram showing an example of a discharge waveform when discharge ends in a short time due to an increase in internal resistance. In this case, the amount of discharge is small and the battery 3 is not completely refreshed. FIG. 13 is a diagram showing an example of a discharge waveform in the next discharge when the discharge ends in a short time. If the battery is charged again after a short period of discharge and then discharged again, the voltage drop phenomenon may occur again.

If the discharge time of the first discharge performed after the first notification for prompting discharge is shorter than a predetermined time, the control circuit 27 of the present embodiment controls the discharge of the battery 3 after the first discharge ends. A second notification will be issued to encourage If the discharge time of the first discharge is within 20 minutes, for example, the control circuit 27 determines that the battery 3 has not been sufficiently discharged, and after returning to normal operation, issues a second notification prompting an inspection to be refreshed. The monitor 11c continues to light up or blink. At this time, the charging monitor 11a determines that the battery 3 has reached the end of its life and is blinking.

The discharge current of the second discharge performed after the second notification is preferably smaller than the discharge current of the first discharge. Thereby, it is possible to prevent the discharge from stopping due to an excessive drop in voltage, and it is possible to discharge the battery to a state close to a complete discharge. Note that the discharge current for the first discharge may be the same as the discharge current for normal inspection.

Note that the technical features described in each embodiment may be used in combination as appropriate.

Hereinafter, various aspects of the present disclosure will be collectively described as supplementary notes.
(Additional note 1)
a light source and
a battery that turns on the light source during a power outage;
a charging circuit that supplies charging current to the battery to charge the battery;
a control circuit that provides a first notification to prompt the user to discharge the battery;
Equipped with
The lighting device, wherein whether or not to perform the first notification is determined based on the charging current, the temperature of the battery, and the charging time of the battery.
(Additional note 2)
Equipped with an inspection monitor light source,
The lighting device according to supplementary note 1, wherein the control circuit performs the first notification using the inspection monitor light source.
(Additional note 3)
3. The lighting device according to appendix 1 or 2, wherein the control circuit determines whether or not to issue the first notification in response to a command from a remote controller.
(Additional note 4)
The lighting device according to appendix 3, wherein the first notification is displayed on the remote controller.
(Appendix 5)
The lighting device according to supplementary note 1, wherein the control circuit performs the first notification by lighting the light source with less power than at the time of the power outage.
(Appendix 6)
a regular power supply circuit that is supplied with power from a commercial power source and supplies power to the charging circuit;
an emergency lighting circuit that is supplied with power from the battery and lights up the light source;
Equipped with
The lighting device according to appendix 5, wherein at the time of the first notification, the regular power supply circuit supplies power to the emergency lighting circuit to turn on the light source.
(Appendix 7)
The lighting device according to appendix 5, wherein at the time of the first notification, power is supplied from the battery and the light source is turned on.
(Appendix 8)
The lighting device according to supplementary note 1, wherein the first notification is displayed on an external control device.
(Appendix 9)
If the discharge time of the first discharge performed after the first notification is shorter than a predetermined time, the control circuit sends a second notification for prompting the battery to discharge after the first discharge ends. 9. The lighting device according to any one of Supplementary Notes 1 to 8.
(Appendix 10)
The lighting device according to appendix 9, wherein the discharge current of the second discharge performed after the second notification is smaller than the discharge current of the first discharge.
(Appendix 11)
a lighting device;
a control device in communication with the lighting device;
Equipped with
The lighting device includes:
a light source and
a battery that turns on the light source during a power outage;
a charging circuit that supplies charging current to the battery to charge the battery;
Equipped with
A first notification is provided to prompt the user to discharge the battery, and whether or not to provide the first notification is determined based on the charging current, the temperature of the battery, and the charging time of the battery. A lighting control system featuring:
(Appendix 12)
The lighting control system according to appendix 11, wherein the control device displays the first notification.
(Appendix 13)
The control device accumulates data on the charging current, data on the temperature of the battery, and data on charging time of the battery, and determines whether to perform the first notification based on the accumulated data. The lighting control system according to appendix 11 or 12, characterized in that:

1 emergency light, 2 lighting unit, 3 battery, 4 main body, 5 frame, 6 lamp, 7 spring, 8 terminal block, 9 automatic inspection switch, 10 inspection switch, 11 monitors, 11a charging monitor, 11b lamp monitor, 11c inspection Monitor, 12 Remote control receiver, 17 Cover, 19 Thermistor, 21 Commercial power supply, 22 Rectifier circuit, 23 DC-DC converter, 24 Charging current setting output, 25 Charging circuit, 26 Control power generation circuit, 27 Control circuit, 29 DC- DC converter, 30 DC-DC converter control circuit section, 34 lamp current detection circuit, 35 remote control signal receiving circuit, 36 remote control signal receiving section, 37 automatic inspection switch signal input section, 38 inspection switch signal input section, 39 lamp on/off switch, 41 output voltage detection section, 42 battery voltage detection section, 43 battery monitor signal output section, 44 lamp monitor signal output section, 45 inspection monitor output signal section, 46 cutoff circuit control section, 47 cutoff circuit, 48 power failure detection section, 49 temperature Detection unit, 51 Communication unit, 52 Lamp on/off control signal output unit, 60 Control device, 70 Remote control, 70a Confirmation button, 70b Self-inspection button, 201 Emergency light

Claims (13)

a light source and
a battery that turns on the light source during a power outage;
a charging circuit that supplies charging current to the battery to charge the battery;
a control circuit that provides a first notification to prompt the user to discharge the battery;
Equipped with
The lighting device, wherein whether or not to perform the first notification is determined based on the charging current, the temperature of the battery, and the charging time of the battery. Equipped with an inspection monitor light source,
The lighting device according to claim 1, wherein the control circuit provides the first notification using the inspection monitor light source. 3. The lighting device according to claim 1, wherein the control circuit determines whether or not to issue the first notification in response to a command from a remote controller. The lighting device according to claim 3, wherein the first notification is displayed on the remote control. The lighting device according to claim 1, wherein the control circuit performs the first notification by lighting the light source with less power than at the time of the power outage. a regular power supply circuit that is supplied with power from a commercial power source and supplies power to the charging circuit;
an emergency lighting circuit that is supplied with power from the battery and lights up the light source;
Equipped with
6. The lighting device according to claim 5, wherein at the time of the first notification, the regular power supply circuit supplies power to the emergency lighting circuit so that the light source is turned on. 6. The lighting device according to claim 5, wherein at the time of the first notification, power is supplied from the battery and the light source is turned on. The lighting device according to claim 1, wherein the first notification is displayed on an external control device. If the discharge time of the first discharge performed after the first notification is shorter than a predetermined time, the control circuit sends a second notification for prompting the battery to discharge after the first discharge ends. The lighting device according to claim 1 or 2, characterized in that: The lighting device according to claim 9, wherein a discharge current of the second discharge performed after the second notification is smaller than a discharge current of the first discharge. a lighting device;
a control device in communication with the lighting device;
Equipped with
The lighting device includes:
a light source and
a battery that turns on the light source during a power outage;
a charging circuit that supplies charging current to the battery to charge the battery;
Equipped with
A first notification is provided to prompt the user to discharge the battery, and whether or not to provide the first notification is determined based on the charging current, the temperature of the battery, and the charging time of the battery. A lighting control system featuring: The lighting control system according to claim 11, wherein the control device displays the first notification. The control device accumulates data on the charging current, data on the temperature of the battery, and data on charging time of the battery, and determines whether to perform the first notification based on the accumulated data. The lighting control system according to claim 11 or 12, characterized in that:

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