Lighting devices and illumination devices

Abstract

The objective of this disclosure is to reduce delays in detecting defects through inspections. [Solution] The emergency lighting unit 13 lights up the light source 20 using emergency power supplied from the storage battery 30. 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 lights up 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 of the emergency lighting unit 13 while normal power is being supplied. If the supply of normal power is stopped while the control unit 14 is operating in inspection mode, it switches the operating mode to emergency lighting mode and lights up the light source 20 of the emergency lighting unit 13, and also continues to inspect the storage battery 30 even while the emergency lighting mode is in operation.

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 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 (hereinafter referred to as a conventional example) 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 as 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 below 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 conventional example, when the inspection is aborted during the inspection, the inspection is not performed until the next inspection reservation time. That is, since the conventional example does not continue the inspection aborted halfway, there is a risk that the timing for discovering a defect in the storage battery by the inspection will be delayed.

[0005] The purpose of this disclosure is to provide lighting devices and illumination devices that can suppress delays in detecting defects through inspection. [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 normal power is being supplied. If the supply of normal power is stopped while the inspection mode is in operation, the control unit switches the operating mode to the emergency lighting mode to light the light source in the lighting circuit unit, and continues to inspect the storage battery even while the emergency lighting mode is in operation.

[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 device and illumination device described herein have the effect of reducing delays in detecting malfunctions through inspection. [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 above-mentioned lighting device in normal lighting mode and emergency lighting mode. [Figure 4] Figure 4 is a flowchart illustrating the operation of the control unit in the same lighting device during inspection mode. [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 supply of normal power stops during the operation in the inspection mode, the control unit 14 switches the operation mode to the emergency lighting mode to light the light source 20 in the emergency lighting unit 13, and continues to inspect the storage battery 30 even during the operation in the emergency lighting mode.

[0015] Thus, the lighting device B1 and the lighting device A1 according to the embodiment continue to inspect the storage battery 30 even when the supply of normal power stops during the inspection. Therefore, compared with the case where the inspection is aborted when the supply of normal power stops, the delay in discovering defects (such as deterioration of the storage battery 30) due to the inspection can be suppressed.

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

[0017] (2-1) Lighting device The lighting device 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 the passage thereto during the supply of normal power and during a power outage due to a disaster such as a fire.

[0018] The lighting device A1 includes a lighting device B1, a housing 40, a lamp unit 41, a display block 42, etc. (see FIG. 2). The housing 40 is formed of a flat box-shaped synthetic resin molded body with an open front surface. The housing 40 houses the lighting device B1 and the storage battery 30. However, the storage battery 30 is removably housed in the housing 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 acrylic resin or 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 surface faces the rear surface 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 within the light guide plate and exits from the front surface of the light guide plate. Then, the display panel 420 is illuminated by the light exiting from the front surface 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 surface 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 portion of the opening of the container body 40 excluding the upper portion to which 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 prism shape, with one end surface in the longitudinal direction facing the light source 20 and the side surface (lower surface) along the longitudinal direction facing the opening of the lower surface of the housing 410, and is housed in the housing 410.

[0024] The lamp unit 41 is attached to the container body 40 so as to be fitted into the upper front portion of the container body 40. At this time, a part of the substrate is inserted and connected to the 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 six months by law, but a shorter period, such as three 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 interrupt an inspection when the push-button switch is pressed. The input receiving unit 15 also receives an operation input to start or interrupt an inspection by receiving an infrared signal transmitted from the remote controller with the infrared light receiving element. 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. Also, if the control unit 14 receives an operation input to interrupt an inspection from the input receiving unit 15 while operating in inspection mode, it switches from inspection mode to normal lighting mode. The bottom of the body 40 of the lighting device A1 has an operation 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) Operation of the lighting device Next, the operation of the lighting device B1 will be explained with reference to the flowcharts in Figures 3 and 4. Each process shown in the flowcharts in Figures 3 and 4 is executed by the control unit 14 of the lighting device B1.

[0037] (2-3-1) Explanation of the normal operation of the lighting device First, the operation of the lighting device B1 under normal conditions (when operating in the regular lighting mode) will be explained with reference to the flowchart in Figure 3.

[0038] The control unit 14 operates in normal lighting mode (step S4 in Figure 3) if AC power (normal power) is supplied from the normal power supply P1 (Yes in step S1 in Figure 3), the inspection cycle has not elapsed since the last inspection (No in step S2 in Figure 3), and the input receiving unit 15 has not received an operation input to start the inspection (No in step S3 in Figure 3). In normal lighting mode, the control unit 14 charges the battery 30 with the charging unit 11 and lights the light source 20 with the normal lighting unit 12 (step S5 in Figure 3).

[0039] If the control unit 14 determines that the normal power supply P1 has failed during operation in normal lighting mode (No. in step S6 of Figure 3), it switches from normal lighting mode to emergency lighting mode (step S7 of Figure 3). In emergency lighting mode, the control unit 14 stops the charging unit 11 and uses the discharge power of the storage battery 30 to light the light source 20 in the emergency lighting unit 13 (emergency lighting) (step S8 of Figure 3). Note that while operating in emergency lighting mode after switching from normal lighting mode, the control unit 14 does not determine whether the storage battery 30 is functioning normally or not.

[0040] If the control unit 14 determines that the supply of normal power from the normal power supply P1 has resumed (power restored) (Yes in step S9 of Figure 3), it switches from emergency lighting mode to normal lighting mode (step S10 of Figure 3). Furthermore, while operating in normal lighting mode, if the inspection cycle has elapsed since the last inspection (Yes in step S2 of Figure 3), or if the input reception unit 15 receives an operation input to start an inspection (Yes in step S3 of Figure 3), the control unit 14 switches from normal lighting mode to inspection mode (step S11 of Figure 3).

[0041] (2-3-2) Operation during inspection of lighting device When the control unit 14 starts operation in inspection mode, it stops the charging unit 11 and uses the discharge power of the storage battery 30 to emergency-light the light source 20 using the emergency lighting unit 13 (step S1 in Figure 4). The control unit 14 also measures the time (lighting time) during which the light source 20 is lit by the emergency lighting unit 13 while the inspection mode is in operation.

[0042] The control unit 14 measures the battery voltage of the discharged battery 30. If the measured battery voltage is above a threshold value, it determines that the battery is normal. If the measured battery voltage is below the threshold value, it determines that the battery is abnormal (step S2 in Figure 4). If the control unit 14 determines that the battery 30 is normal (Yes in step S2 in Figure 4), it determines whether the lighting time has exceeded the inspection time (for example, 20 minutes) (step S3 in Figure 4). If the lighting time has exceeded the inspection time (Yes in step S3 in Figure 4), the control unit 14 displays the inspection result (that the battery 30 is normal) on the display unit 16 (step S5 in Figure 4), exits the inspection mode, and switches the operating mode to the normal lighting mode (step S6 in Figure 4).

[0043] On the other hand, if the lighting time has not exceeded the inspection time (No in step S3 of Figure 4), the control unit 14 determines whether or not the normal power supply P1 has failed (step S4 of Figure 4). If it determines that the normal power supply P1 has not failed (Yes in step S4 of Figure 4), it returns to step S2.

[0044] Furthermore, if the control unit 14 determines that the normal power supply P1 has failed during operation in inspection mode (Yes in step S4 of Figure 4), it switches the operation mode from inspection mode to emergency lighting mode (step S7 of Figure 4), and continues to emergency light up the light source 20 in the emergency lighting unit 13 from the inspection mode (step S8 of Figure 4). Note that the control unit 14 continues to measure the lighting time even after switching the operation mode from inspection mode to emergency lighting mode.

[0045] Furthermore, the control unit 14 determines whether the battery 30 is functioning normally even after switching from inspection mode to emergency lighting mode (step S9 in Figure 4). If the control unit 14 determines that the battery 30 is functioning normally (Yes in step S9 in Figure 4), it then determines whether the supply of normal power from the normal power source P1 has been resumed (power restored) (step S10 in Figure 4).

[0046] If the normal power supply P1 has not been restored (No in step S10 of Figure 4), the control unit 14 returns to step S9. If the normal power supply P1 has been restored (Yes in step S10 of Figure 4), it determines whether the lighting time has exceeded the inspection time (step S11 of Figure 4). For example, suppose the lighting time until the control unit 14 switches the operating mode from inspection mode to emergency lighting mode is 10 minutes, and the lighting time during the power outage period from the time the normal power supply P1 goes out until it is restored is 5 minutes. In this case, the remaining time after subtracting the lighting time from the inspection time is 5 minutes, so the control unit 14 determines that the lighting time (15 minutes) has not exceeded the inspection time (20 minutes), and determines whether the battery 30 is functioning normally (step S9 of Figure 4). Then, when the lighting time has elapsed beyond the inspection time (Yes in step S11 of Figure 4), the control unit 14 displays the inspection result (that the storage battery 30 is normal) on the display unit 16 (step S5 of Figure 4), exits the inspection mode, and switches the operating mode to the normal lighting mode (step S6 of Figure 4).

[0047] Alternatively, let's assume that the lighting time until the control unit 14 switches the operating mode from inspection mode to emergency lighting mode is 10 minutes, and the lighting time during the power outage period from when the normal power supply P1 goes out until it is restored is 15 minutes. In this case, since the lighting time exceeds the inspection time, the control unit 14 determines that the lighting time (25 minutes) has exceeded the inspection time (20 minutes) (Yes in step S11 of Figure 4), displays the inspection result on the display unit 16 (step S5 of Figure 4), and switches the operating mode from emergency lighting mode to normal lighting mode (step S6 of Figure 4).

[0048] If the control unit 14 determines that the battery 30 is not functioning properly while the emergency lighting mode is running (No. in step S9 of Figure 4), it continues to operate the emergency lighting mode until the normal power supply P1 is restored (No. in step S12 of Figure 4). Then, if the control unit 14 determines that the normal power supply P1 has been restored (Yes in step S12 of Figure 4), it displays the inspection results from the emergency lighting mode operation on the display unit 16 (step S5 of Figure 4) and switches the operating mode from the emergency lighting mode to the normal lighting mode (step S6 of Figure 4).

[0049] 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 storage battery 30.

[0050] (2-4) Advantages of the Embodiment As described above, even if the normal power supply P1 fails during operation in inspection mode and switches to emergency lighting mode, the lighting device B1 allows the control unit 14 to continue inspecting the battery 30. This reduces the delay in detecting defects (such as deterioration of the battery 30) through inspection compared to when the inspection is stopped when the normal power supply P1 fails. However, if the normal power supply P1 fails during operation in normal lighting mode and switches to emergency lighting mode, the lighting device B1 does not allow the control unit 14 to inspect the battery 30.

[0051] Furthermore, when the lighting device B1 has illuminated the light source 20 in the emergency lighting unit 13 for a predetermined inspection period, it instructs the control unit 14 to complete the inspection of the storage battery 30 (see steps S9-S11 in Figure 4). In other words, even if a power outage occurs during the inspection, the lighting device B1 can complete the periodic inspections stipulated by laws and regulations. Here, the inspection time for exit signs is stipulated to be 20 minutes, or 60 minutes if the storage battery 30 has a large capacity, and the inspection time for emergency lights is stipulated to be 30 minutes, or 60 minutes if the storage battery 30 has a large capacity. Therefore, the lighting device B1 can perform the periodic inspections stipulated by laws and regulations by setting the inspection time to one of 20 minutes, 30 minutes, or 60 minutes.

[0052] Furthermore, if the normal power supply P1 is restored after a power outage while the lighting device B1 is operating in inspection mode, and the total lighting time during the operation of the inspection mode and the emergency lighting mode has not reached the inspection time, the lighting device B1 switches the operating mode of the control unit 14 from emergency lighting mode to inspection mode to continue inspecting the battery 30. Therefore, the lighting device B1 can complete the inspection even if a temporary power outage occurs during the inspection. However, if the lighting device B1 has reached the inspection time, it switches the operating mode of the control unit 14 to inspection mode and does not continue inspecting the battery 30. Thus, when the operating mode of the control unit 14 switches from inspection mode to emergency lighting mode, the lighting device B1 includes the lighting time of the light source 20 in emergency lighting mode in the inspection time and has the control unit 14 determine whether the battery 30 is normal or abnormal, thereby preventing the battery 30 from being discharged for an unnecessarily long period of time.

[0053] (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 supply of normal power is interrupted while the control unit (14) is operating in inspection mode, it switches the operating mode to emergency lighting mode and lights up the light source (20) in the lighting circuit section, and continues to inspect the storage battery (30) even while operating in emergency lighting mode.

[0054] The lighting device (B1) according to the first embodiment continues to inspect the storage battery (30) even if the supply of normal power is interrupted during inspection, thus reducing the delay in detecting defects during inspection compared to when the inspection is stopped due to the interruption of the supply of normal power.

[0055] 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, it is preferable that the control unit (14) terminates the inspection of the storage battery (30) when the lighting time during which the light source (20) in the lighting circuit reaches a predetermined inspection time.

[0056] The lighting device (B1) according to the second embodiment can complete the periodic inspections stipulated by laws and regulations even if a power outage occurs during the inspection.

[0057] A lighting device (B1) according to a third aspect of this disclosure can be realized by combining it with the second aspect. In the lighting device (B1) according to the third aspect, it is preferable that the control unit (14), while operating in inspection mode, switches from emergency lighting mode to inspection mode and continues inspecting the storage battery (30) if the supply of normal power is temporarily stopped and then restarted, and the lighting time has not reached the inspection time.

[0058] The lighting device (B1) according to the third embodiment allows the inspection to be completed even if a temporary power outage occurs during the inspection.

[0059] A lighting device (B1) according to a fourth aspect of this disclosure can be realized in combination with a second or third aspect. In the lighting device (B1) according to the fourth aspect, the inspection time is preferably one of 20 minutes, 30 minutes, or 60 minutes.

[0060] The lighting device (B1) according to the fourth embodiment can perform periodic inspections as stipulated by laws and regulations.

[0061] A lighting device (B1) according to a fifth aspect of the present disclosure can be realized in combination with any of the first to fourth aspects. Preferably, the lighting device (B1) according to the fifth 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).

[0062] The lighting device (B1) according to the fifth embodiment can light the light source (20) both when the normal power supply is being supplied and when it is being stopped.

[0063] A lighting device (A1) according to the sixth aspect of this disclosure comprises a lighting device (B1) according to any of the first to fifth aspects, a light source (20), and a storage battery (30).

[0064] The lighting device (A1) according to the sixth embodiment continues to inspect the storage battery (30) even if the supply of normal power is interrupted during inspection, thus reducing the delay in detecting defects during inspection compared to when the inspection is stopped due to the interruption of the supply of normal power. [Explanation of Symbols]

[0065] A1 Lighting device B1 Lighting device 11 Live parts 12 Regular lighting section 13. Emergency lighting unit (lighting circuit unit) 14 Control Unit 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. If the supply of normal power is interrupted while the inspection mode is in operation, the control unit switches the operation mode to the emergency lighting mode, lights the light source in the lighting circuit, and continues the inspection of the storage battery even while the emergency lighting mode is in operation. Lighting device.

2. The control unit terminates the battery inspection when the lighting time for which the light source is lit in the lighting circuit unit reaches a predetermined inspection time. The lighting device according to claim 1.

3. If, during operation in the inspection mode, the supply of normal power is temporarily interrupted and then restarted, and the lighting time has not reached the inspection time, the control unit switches from the emergency lighting mode to the inspection mode and continues inspecting the storage battery. The lighting device according to claim 2.

4. The inspection time is one of 20 minutes, 30 minutes, or 60 minutes. The lighting device according to claim 2 or 3.

5. 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. A lighting device according to any one of claims 1 to 3.

6. A lighting device according to any one of claims 1-3, The aforementioned light source, The aforementioned storage battery, Equipped with, Lighting device.

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