Lighting devices and illumination devices

Abstract

The objective of this disclosure is to avoid situations where inspections are completed without being completed. [Solution] The lighting device B1 comprises an emergency lighting unit 13, a charging unit 11, and a control unit 14. The control unit 14 operates by selectively switching between a plurality of operating modes, including an emergency lighting mode and an inspection mode. The emergency lighting mode is an operating mode in which the light source 20 of the emergency lighting unit 13 is lit when the supply of normal power is stopped. The inspection mode is an operating mode in which the storage battery 30 is inspected by lit the light source 20 of the emergency lighting unit 13 while normal power is being supplied. When the inspection mode is in operation, if the supply of normal power is temporarily stopped and then restarted, the control unit 14 starts the inspection mode after a predetermined time has elapsed after the supply of normal power has been restarted.

Description

Technical Field

[0001] The present disclosure relates to a lighting device and a lighting apparatus, and more particularly, to a lighting device that lights a light source with electric power supplied from a storage battery, and a lighting apparatus including the lighting device.

Background Art

[0002] As a conventional example, the lighting apparatus described in Patent Document 1 is exemplified. The lighting apparatus described in Patent Document 1 includes a power supply unit (lighting device), a light source as a load, and a battery to be inspected. The power supply unit includes a power supply unit that lights the light source and charges and discharges the battery, a control unit that controls the power supply unit, and the like. The control unit includes a timer unit, an acquisition unit, and an inspection unit. The inspection unit lights the light source, which is a load, with the power of the battery by the power supply unit for a predetermined inspection time (for example, 20 minutes), then checks the voltage of the battery, and compares the voltage with a threshold value to check whether the battery is normal or abnormal due to deterioration or the like. The control unit performs the inspection by the inspection unit when both a first condition in a preset inspection time zone based on time information from the timer unit and a second condition that the value of the brightness information acquired by the acquisition unit is less than a predetermined threshold value are satisfied.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] By the way, in the above conventional example, when power is restored after the external power is cut off between the start time of the inspection by the inspection unit and the elapse of the inspection time, there is a risk that the inspection by the inspection unit will end unfinished.

[0005] The purpose of this disclosure is to provide a lighting device and an illumination device that can prevent situations in which inspections are completed without being completed. [Means for solving the problem]

[0006] A lighting device according to one aspect of the present disclosure includes a lighting circuit unit that lights a light source using emergency power supplied from a storage battery, a charging unit that charges the storage battery using normal power supplied from an external source, and a control unit that controls the lighting circuit unit. The control unit operates by selectively switching between a plurality of operating modes, including an emergency lighting mode in which the lighting circuit unit lights the light source when the supply of normal power is stopped, and an inspection mode in which the storage battery is inspected by lighting the light source in the lighting circuit unit while the supply of normal power is being supplied. If the supply of normal power is temporarily stopped and then resumed while the inspection mode is in operation, the control unit starts the inspection mode after a predetermined time has elapsed since the supply of normal power was resumed.

[0007] A lighting device according to one aspect of the present disclosure comprises the lighting device, the light source, and the storage battery. [Effects of the Invention]

[0008] The lighting and illumination devices disclosed herein have the effect of preventing situations where inspections are completed in an incomplete state. [Brief explanation of the drawing]

[0009] [Figure 1] Figure 1 is a block diagram of a lighting device and an illumination device according to an embodiment of the present disclosure. [Figure 2] Figure 2 is a perspective view of the same lighting device. [Figure 3] Figure 3 is a flowchart illustrating the operation of the control unit in the lighting device described above. [Modes for carrying out the invention]

[0010] Hereinafter, the lighting device B1 and lighting device A1 according to embodiments of this disclosure will be described in detail with reference to the drawings. However, the configurations described in the following embodiments are merely examples of this disclosure. This disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved.

[0011] (1) Overview The lighting device A1 according to this embodiment comprises a lighting device B1 according to this embodiment, a light source 20, and a storage battery 30 (see Figure 1). The lighting device A1 according to this embodiment is, for example, an emergency exit sign (emergency exit sign) as shown in Figure 2. However, the lighting device A1 according to this embodiment is not limited to an emergency exit sign, and may be a stairwell sign or an emergency light.

[0012] The lighting device B1 according to this embodiment comprises a lighting circuit unit (emergency lighting unit 13), a charging unit 11, and a control unit 14. The emergency lighting unit 13 lights the light source 20 using emergency power supplied from the storage battery 30. The charging unit 11 charges the storage battery 30 using normal power supplied from an external source (normal power supply P1). The light source 20 is composed of one or more white LEDs for illumination. The storage battery 30 has a plurality of battery cells electrically connected in series. Each battery cell is composed of, for example, a nickel-metal hydride secondary battery.

[0013] The control unit 14 controls the emergency lighting unit 13. The control unit 14 operates by selectively switching between a plurality of operating modes, including an emergency lighting mode and an inspection mode. The emergency lighting mode is an operating mode in which the light source 20 of the emergency lighting unit 13 is illuminated when the supply of normal power is stopped. The inspection mode is an operating mode in which the storage battery 30 is inspected by illuminating the light source 20 of the emergency lighting unit 13 while normal power is supplied.

[0014] When the control unit 14 is operating in inspection mode, if the supply of normal power is temporarily interrupted and then restarted, it will start the inspection mode after a predetermined time has elapsed since the normal power supply was restarted. Preferably, the predetermined time is longer than the time required to fully charge the storage battery 30 with normal power.

[0015] Thus, when the supply of the normal power resumes after being stopped during the inspection in the lighting device B1 and the lighting apparatus A1 according to the embodiment, the inspection is resumed after a predetermined time has elapsed and the storage battery 30 is charged, so that it is possible to avoid a situation where the inspection ends while remaining unfinished.

[0016] (2) Details Following, the lighting device B1 according to the embodiment (hereinafter abbreviated as the lighting device B1) and the lighting apparatus A1 according to the embodiment (hereinafter abbreviated as the lighting apparatus A1) will be described in detail with reference to the drawings.

[0017] (2-1) Lighting apparatus The lighting apparatus A1 is an induction lamp (emergency exit induction lamp) as described above. The induction lamp is an emergency lighting fixture for indicating an emergency exit or a passage thereto during the supply of the normal power and during a power failure due to a disaster such as a fire.

[0018] The lighting apparatus A1 includes a lighting device B1, a body 40, a lamp unit 41, a display block 42, etc. (see FIG. 2). The body 40 is formed of a flat box-shaped synthetic resin molded body with an open front surface. The body 40 houses the lighting device B1 and the storage battery 30. However, the storage battery 30 is detachably housed in the body 40.

[0019] The display block 42 has a display panel 420, a light guide plate, and a holder 422. The display panel 420 is formed in a rectangular flat plate shape from a synthetic resin material having translucency such as an acrylic resin or a polycarbonate resin. A pictogram for emergency evacuation guidance is displayed on the front surface of the display panel 420.

[0020] The light guide plate is formed in a rectangular flat plate shape from a synthetic resin material having light transmissivity, such as acrylic resin or polycarbonate resin. The light guide plate is disposed behind the display panel 420 so that its front face faces the rear face of the display panel 420. Light radiated from the lamp unit 41 is incident on the upper surface of the light guide plate. The light incident from the upper surface of the light guide plate is guided inside the light guide plate and emitted from the front face of the light guide plate. Then, the display panel 420 is illuminated by the light emitted from the front face of the light guide plate.

[0021] The holder 422 is formed of a synthetic resin material having no light transmissivity into a rectangular box shape (frame shape) with an open front face and upper surface. The holder 422 holds the display panel 420 and the light guide plate such that the display panel 420 is disposed in front of the light guide plate.

[0022] The display block 42 is attached to the container body 40 so as to cover the remaining part of the opening of the container body 40 excluding the upper part where the lamp unit 41 is attached (see FIG. 2).

[0023] The lamp unit 41 includes a light source 20 composed of an LED, a light guide for guiding the light radiated from the light source 20, and a housing 410 for housing the light source 20 and the light guide. The housing 410 is formed in a long box shape with an open lower surface and rear surface. The light source 20 is mounted on a substrate and housed at one end in the longitudinal direction of the housing 410. The light guide is formed in a long prismatic shape, and is housed in the housing 410 in a state where one end face in the longitudinal direction faces the light source 20 and the side face (lower surface) along the longitudinal direction faces the opening of the lower surface of the housing 410.

[0024] The lamp unit 41 is attached to the container body 40 so as to be fitted into the upper front part of the container body 40. At this time, a part of the substrate is inserted and connected to a connector installed at the upper right corner of the container body 40, whereby the lamp unit 41 (light source 20) and the lighting device B1 are electrically connected via the connector.

[0025] However, when the lamp unit 41 is attached to the body 40, the upper surface of the light guide plate and the output port of the lamp unit 41 face each other in the vertical direction. Therefore, almost all of the light emitted from the output port of the lamp unit 41 enters the light guide plate from its upper surface. The light that enters the light guide plate travels through the light guide plate, undergoes total internal reflection at the rear surface of the holder 422, and is emitted forward from the front surface of the light guide plate to illuminate the display panel 420.

[0026] (2-2) Lighting device The lighting device B1 comprises an AC / DC converter 10, a charging unit 11, a normal lighting unit 12, an emergency lighting unit 13, a control unit 14, an input receiving unit 15, and a display unit 16 (see Figure 1). However, Figure 1 omits circuit configurations that are not directly related to this disclosure, such as a control power supply unit that generates the control power supply voltage supplied to the control unit 14, and a power outage detection unit that detects power outages.

[0027] The AC / DC conversion unit 10 consists of a full-wave rectifier (diode bridge) that full-wave rectifies the AC voltage and AC current supplied from the normal power supply P1, a smoothing capacitor that smooths the pulsating voltage and pulsating current output from the full-wave rectifier, and a DC conversion circuit. The DC conversion circuit has, for example, an isolated flyback converter. The DC conversion circuit boosts or steps down the DC input voltage (voltage across the smoothing capacitor) and outputs it. In this embodiment, the AC / DC conversion unit 10 is configured to output two systems of DC voltage and DC current from the DC conversion circuit (flyback converter).

[0028] The charging unit 11, for example, constitutes a constant current circuit and charges the storage battery 30 with a charging current that is a constant current obtained by converting the DC current output from the AC / DC conversion unit 10.

[0029] The normal lighting unit 12 is configured to make the DC current output from the AC / DC converter 10 a constant current. The normal lighting unit 12 lights the light source 20 by outputting the constant DC current to the light source 20.

[0030] The emergency lighting unit 13 includes, for example, a flyback converter. The emergency lighting unit 13 applies the DC voltage output from the battery 30 to the light source 20 by boosting or lowering the voltage. The emergency lighting unit 13 is also configured to adjust the output current by controlling the switching element of the flyback converter using PWM control.

[0031] The control unit 14 primarily consists of a microcontroller. The control unit 14 controls the charging unit 11, the normal lighting unit 12, the emergency lighting unit 13, etc., by having the microcontroller's processor execute a program. The control unit 14 operates by selectively switching between multiple operating modes, including normal lighting mode, emergency lighting mode, and inspection mode. When operating in normal lighting mode, the control unit 14 charges the battery 30 in the charging unit 11, stops the emergency lighting unit 13, and lights the light source 20 in the normal lighting unit 12. Based on the output voltage of the AC / DC converter 10, the control unit 14 determines whether the supply of AC power (normal power) from the normal power supply P1 has stopped (power outage). If the normal power supply P1 is not experiencing a power outage, the control unit 14 operates in normal lighting mode as a general rule, and if it determines that the normal power supply P1 is experiencing a power outage, it switches to emergency lighting mode and operates accordingly.

[0032] Incidentally, emergency lighting fixtures equipped with batteries, such as exit signs and emergency lights, are required by law to undergo periodic inspections. Therefore, in lighting device A1, the timer function installed in the control unit 14 is used to count the inspection cycle, and when the inspection cycle has elapsed since the last inspection, the control unit 14 switches the operating mode to inspection mode and performs the inspection. The inspection cycle is set at 6 months by law, but a shorter period, such as 3 months, is also acceptable.

[0033] The input receiving unit 15 has a push-button switch and an infrared light receiving element. The input receiving unit 15 receives an operation input to start or stop an inspection when the push-button switch is pressed. The input receiving unit 15 also receives an operation input to start or stop an inspection by receiving an infrared signal transmitted from the remote controller with the infrared light receiving element. The input receiving unit 15 may also receive an operation input to start or stop an inspection by receiving a wireless signal (a signal using radio waves) transmitted from a communication device such as a smartphone or tablet. The input receiving unit 15 passes the received operation input to the control unit 14. The control unit 14 switches the operation mode to inspection mode according to the operation input to start an inspection passed from the input receiving unit 15. Furthermore, if the control unit 14 receives an operation input to stop an inspection from the input receiving unit 15 while operating in inspection mode, it switches from inspection mode to normal lighting mode. Furthermore, the bottom of the body 40 of the lighting device A1 has an operating hole 400 for exposing the push button of the push button switch, and a light receiving window 401 for passing infrared signals (see Figure 2).

[0034] The display unit 16 has multiple light-emitting elements. For example, the display unit 16 has a red LED that emits red light and a green LED that emits green light. The display unit 16 is configured to turn on, blink, or turn off the red LED and the green LED, respectively, based on instructions from the control unit 14. The bottom of the body 40 of the lighting device A1 is provided with a hole 402 for allowing red light emitted from the red LED to pass through, and a hole 403 for allowing green light emitted from the green LED to pass through (see Figure 2).

[0035] When the control unit 14 is operating in normal lighting mode and charging the battery 30 in the charging unit 11, it lights up a green LED on the display unit 16. Furthermore, if the light source 20 is lit normally, the control unit 14 turns off a red LED to indicate on the display unit 16 that the light source 20 is functioning correctly. On the other hand, if the light source 20 is off or blinking, the control unit 14 lights up a red LED to indicate on the display unit 16 that there is a problem with the light source 20. In addition, the control unit 14 displays the inspection result on the display unit 16. In inspection mode, if the control unit 14 can keep the light source 20 lit for the specified inspection time (20 or 60 minutes), it lights up a green LED to indicate on the display unit 16 that the battery 30 is functioning correctly. On the other hand, if the control unit 14 cannot keep the light source 20 lit for the specified time in inspection mode, it blinks a green LED to indicate on the display unit 16 that it is time to replace the battery 30.

[0036] (2-3) Operational explanation when inspecting the lighting device Next, the operation of the lighting device B1 during inspection will be explained with reference to the flowchart in Figure 3. Note that each process shown in the flowchart in Figure 3 is executed by the control unit 14 of the lighting device B1.

[0037] When the lighting device B1 receives normal power from the normal power supply P1, the control unit 14 operates in the default operating mode, which is the normal lighting mode (step S1 in Figure 3). The control unit 14 also uses the timer function of the microcontroller to count the operating time of the normal lighting mode.

[0038] The control unit 14 continues to operate in the normal lighting mode until the operating time of the normal lighting mode reaches the inspection cycle (for example, 3 months) (step S2 in Figure 3). Once the operating time of the normal lighting mode has exceeded the inspection cycle, the control unit 14 switches the operating mode to the inspection mode (step S3 in Figure 3). The control unit 14 operates in the inspection mode until a specified inspection time (for example, 20 minutes) has elapsed, in other words, until the inspection is completed (step S4 in Figure 3). Once the inspection time has elapsed and the inspection is completed, the control unit 14 displays the inspection result on the display unit 16 (step S8 in Figure 3) and switches the operating mode from the inspection mode to the normal lighting mode (step S1 in Figure 3).

[0039] Here, the control unit 14 determines whether the supply of AC power (normal power) from the normal power supply P1 has stopped (power outage) not only during operation in normal lighting mode but also during operation in inspection mode (step S5 in Figure 3). If the control unit 14 determines that the normal power supply P1 has failed, it switches the operating mode from inspection mode to emergency lighting mode (step S6 in Figure 3). While operating in emergency lighting mode, the control unit 14 determines whether the supply of AC power (normal power) from the normal power supply P1 has resumed (power restored) (step S7 in Figure 3).

[0040] When the control unit 14 determines that the normal power supply P1 has been restored, it switches the operating mode from emergency lighting mode to normal lighting mode and causes the charging unit 11 to charge the storage battery 30 for a predetermined time or longer (step S9 in Figure 3). The predetermined time should be any time necessary and sufficient to fully charge the storage battery 30, for example, 24 to 25 hours is preferable.

[0041] After a predetermined charging period is complete, the control unit 14 compares the elapsed time since the most recent inspection that was successfully completed with a threshold (step S10 in Figure 3). If the elapsed time is less than the threshold, it switches to inspection mode and performs the inspection again (step S3 in Figure 3). On the other hand, if the elapsed time is equal to or greater than the threshold, the control unit 14 notifies the user that the elapsed time has reached the threshold by displaying it on the display unit 16 (step S11 in Figure 3), and then switches to inspection mode and performs the inspection again (step S3 in Figure 3). For example, the control unit 14 may indicate (notify) that the elapsed time has reached the threshold by flashing the red LED on the display unit 16, or by flashing the red LED and green LED together. Alternatively, the control unit 14 may indicate (notify) that the elapsed time has reached the threshold by controlling the normal lighting unit 12 to flash the light source 20. The threshold for the elapsed time is appropriately set to, for example, six months, which is the inspection period stipulated by laws and regulations. However, the control unit 14 may compare the number of consecutive failures in completing inspections with a threshold value, instead of the elapsed time since the most recent inspection that was successfully completed. In this case, a threshold value of around 2 to 3 failures is appropriate.

[0042] The worker responsible for the inspection checks the inspection results based on the display on the display unit 16, and if there is an abnormality in the inspection results, takes necessary action, such as replacing the lamp unit 41 and / or the storage battery 30. Furthermore, if the worker learns from the display on the display unit 16 that the period or number of times the inspection has not been completed exceeds a threshold, it is desirable to forcibly switch the control unit 14 to inspection mode and perform the inspection, for example by pressing the push button switch on the input reception unit 15.

[0043] (2-4) Advantages of the Embodiment As described above, if the lighting device B1 is operating in inspection mode and the supply of normal power is temporarily interrupted and then restarted, it will start the inspection mode on the control unit 14 after a predetermined time has elapsed since the normal power supply was restarted. As a result, if the supply of normal power is interrupted and then restarted during inspection, the lighting device B1 will restart the inspection after a predetermined time has elapsed and the storage battery 30 has been charged, thus avoiding a situation where the inspection ends incomplete.

[0044] Furthermore, if the control unit 14 cancels the inspection mode that is currently running in the lighting device B1 upon receiving an operation input to cancel the inspection in the input reception unit 15, or upon receiving an infrared signal for canceling the inspection in the input reception unit 15, the lighting device B1 will start the inspection mode again after a predetermined time has elapsed since the inspection mode was canceled. In other words, if the inspection is intentionally canceled, the lighting device B1 can prevent the period during which inspections are not performed from becoming prolonged by having the control unit 14 restart the inspection after a predetermined time has elapsed (for example, the time it takes to fully charge the storage battery 30).

[0045] Here, the lighting device B1 periodically switches the operating mode of the control unit 14 to inspection mode (for example, every three months). In other words, the lighting device B1 can perform inspections regularly and automatically without requiring human operation, thus reducing the effort involved in inspections and promoting their implementation.

[0046] Furthermore, if the supply of normal power is repeatedly stopped and restarted, the lighting device B1 notifies the control unit 14 when the repeated duration or number of repetitions reaches a predetermined threshold, thus enabling notification that inspections have not been carried out for a long period of time.

[0047] Furthermore, if the inspection mode is repeatedly stopped and restarted in response to the inspection start and stop operation inputs received by the input reception unit 15, the lighting device B1 may notify the control unit 14 that the repeated time or number of repetitions has reached a predetermined threshold. In this case as well, the lighting device B1 can notify that an inspection has not been performed for a long period of time.

[0048] Incidentally, when emergency exit signs are installed in theaters, cinemas, planetariums, etc., the Fire Service Act permits them to be turned off during times when darkness is particularly required, such as during performances in theaters or screenings in cinemas. Under the above conditions, the lighting device B1 turning off the light source 20 is called permanent off. When the control unit 14 receives an instruction to permanently turn off from an external source, it stops the normal lighting unit 12 and turns off the light source 20 while continuing to charge the storage battery 30 by the charging unit 11. Furthermore, if the control unit 14 receives an instruction to permanently turn off while operating in inspection mode, it will discontinue inspection mode. In addition, in facilities that are unmanned at night, etc., the circuit breaker may be turned off during the unmanned period to stop the supply of normal power from the normal power supply P1 to the emergency exit signs (lighting device A1). In this case, if the supply of normal power is stopped while the control unit 14 is operating in inspection mode, it will discontinue inspection mode.

[0049] However, even if the inspection is repeatedly canceled under the circumstances described above, the lighting device B1 can notify the control unit 14 that the time or number of repetitions has reached a predetermined threshold, thereby indicating that the inspection has not been performed for a long period of time.

[0050] Furthermore, the lighting device B1 switches the control unit 14 to inspection mode only after a predetermined time has elapsed that is longer than the time required to fully charge the battery 30 using normal power, so that inspection can be started with the battery 30 fully charged.

[0051] (3) Summary A lighting device (B1) according to a first aspect of this disclosure comprises a lighting circuit unit (emergency lighting unit 13), a charging unit (11), and a control unit (14). The lighting circuit unit lights up a light source (20) using emergency power supplied from a storage battery (30). The charging unit (11) charges the storage battery (30) using normal power supplied from an external source (normal power supply P1). The control unit (14) controls the lighting circuit unit. The control unit (14) operates by selectively switching between a plurality of operating modes, including an emergency lighting mode and an inspection mode. The emergency lighting mode is an operating mode in which the light source (20) lights up in the lighting circuit unit when the supply of normal power is stopped. The inspection mode is an operating mode in which the storage battery (30) is inspected by lighting up the light source (20) in the lighting circuit unit while normal power is being supplied. If the normal power supply is temporarily interrupted and then restarted while the inspection mode is in operation, the control unit (14) will start the inspection mode after a predetermined time has elapsed since the normal power supply was restarted.

[0052] In the first embodiment of the lighting device (B1), if the supply of normal power is interrupted during inspection and then restarted, the inspection will resume after a predetermined time has elapsed and the storage battery (30) has been charged, thus avoiding a situation where the inspection is terminated in an incomplete state.

[0053] A lighting device (B1) according to a second aspect of this disclosure can be realized by combining it with the first aspect. In the lighting device (B1) according to the second aspect, if the control unit (14) stops the inspection mode while it is in operation, it is preferable to start the inspection mode again after a predetermined time has elapsed since the inspection mode was stopped.

[0054] In the second embodiment of the lighting device (B1), if inspection is intentionally suspended, the control unit (14) will restart the inspection after a predetermined time has elapsed, thereby preventing the period during which inspection is not performed from becoming prolonged.

[0055] A lighting device (B1) according to a third aspect of this disclosure can be realized in combination with the first or second aspect. In the lighting device (B1) according to the third aspect, it is preferable that the control unit (14) periodically switches the operating mode to inspection mode.

[0056] The lighting device (B1) according to the third embodiment does not require human operation and can be inspected regularly and automatically, thus reducing the effort required for inspection and promoting the implementation of inspections.

[0057] A lighting device (B1) according to a fourth aspect of this disclosure can be realized in combination with any of the first to third aspects. Preferably, the lighting device (B1) according to the fourth aspect further comprises a normal lighting unit (12) that lights a light source (20) with normal power. Preferably, the control unit (14) includes a normal lighting mode as an operating mode in which the normal lighting unit (12) lights the light source (20).

[0058] The lighting device (B1) according to the fourth embodiment can light the light source (20) both when the normal power supply is being supplied and when it is being stopped.

[0059] A lighting device (B1) according to a fifth aspect of this disclosure can be realized in combination with any of the first to fourth aspects. In the lighting device (B1) according to the fifth aspect, it is preferable that the control unit (14) notifies when the time or number of repetitions of the repeated interruption and restart of the supply of normal power has reached a predetermined threshold.

[0060] The lighting device (B1) according to the fifth embodiment can indicate that inspections have not been carried out for a long period of time.

[0061] A lighting device (B1) according to the sixth aspect of this disclosure can be realized in combination with any of the second to fifth aspects. In the lighting device (B1) according to the sixth aspect, it is preferable that the control unit (14) notifies when the time or number of repetitions has reached a predetermined threshold when the inspection mode has been repeatedly stopped and restarted.

[0062] The lighting device (B1) according to the sixth embodiment can indicate that inspections have not been carried out for a long period of time.

[0063] A lighting device (B1) according to the seventh aspect of this disclosure can be realized in combination with the sixth aspect. In the lighting device (B1) according to the seventh aspect, it is preferable that the control unit (14) discontinues the inspection mode when instructed from the outside to discontinue the inspection or to turn off the light source (20).

[0064] The lighting device (B1) according to the seventh embodiment can notify that inspections have not been carried out for a long period of time by forcibly suspending the inspection.

[0065] The lighting device (B1) according to the eighth aspect of this disclosure can be realized in combination with any of the first to seventh aspects. In the lighting device (B1) according to the eighth aspect, the predetermined time is preferably longer than the time required to fully charge the storage battery (30) with normal power.

[0066] The lighting device (B1) according to the eighth embodiment can be started with the storage battery (30) fully charged.

[0067] A lighting device (A1) according to the ninth aspect of this disclosure comprises a lighting device (B1) according to any of the first to eighth aspects, a light source (20), and a storage battery (30).

[0068] The lighting device (A1) according to the ninth embodiment can help avoid situations where the inspection is completed in an incomplete state. [Explanation of Symbols]

[0069] A1 Lighting device B1 Lighting device 10 AC / DC converter 11 Live parts 12 Regular lighting section 13. Emergency lighting unit (lighting circuit unit) 14 Control Unit 16 Display 20 light source 30 Storage batteries

Claims

1. A lighting circuit unit that illuminates the light source using emergency power supplied from a storage battery, A charging unit that charges the storage battery using normal power supplied from an external source, A control unit that controls the aforementioned lighting circuit section, Equipped with, The control unit operates by selectively switching between a plurality of operating modes, including an emergency lighting mode in which the light source is turned on in the lighting circuit when the supply of normal power is stopped, and an inspection mode in which the battery is checked by turning on the light source in the lighting circuit while the supply of normal power is in operation. The control unit, during operation of the inspection mode, if the supply of normal power is temporarily interrupted and then restarted, will start the inspection mode after a predetermined time has elapsed since the supply of normal power was restarted. Lighting device.

2. If the control unit cancels the inspection mode while it is in operation, it will start the inspection mode again after a predetermined time has elapsed since the cancellation of the inspection mode. The lighting device according to claim 1.

3. The control unit periodically switches the operation mode to the inspection mode. The lighting device according to claim 1 or 2.

4. The system further includes a normal lighting unit that lights the light source using the aforementioned normal power, The control unit includes, as an operating mode, a normal lighting mode in which the light source is lit in the normal lighting unit. The lighting device according to claim 1 or 2.

5. The control unit notifies when the supply of the normal power is repeatedly stopped and restarted, and when the repeated time or the number of repetitions reaches a predetermined threshold. The lighting device according to claim 1 or 2.

6. The control unit notifies that if the interruption and restart of the inspection mode are repeated, the time or number of repetitions has reached a predetermined threshold. The lighting device according to claim 2.

7. The control unit terminates the inspection mode when it is instructed from an external source to stop the inspection or to turn off the light source. The lighting device according to claim 6.

8. The predetermined time is equal to or greater than the time required to fully charge the battery using the normal power supply. The lighting device according to claim 1 or 2.

9. A lighting device according to claim 1 or 2, The aforementioned light source, The aforementioned storage battery, Equipped with, Lighting device.

Images