Lighting device

Abstract

To reduce a sense of incongruity given to a user when inspecting an emergency power supply.SOLUTION: A lighting device 1 includes light sources 2, a panel A30 illuminated by the light sources 2, an emergency power source 3, a regular lighting part 4, an emergency lighting part 6, and a control part 8. The regular lighting part 4 lights the light source 2 by regular power. The emergency lighting unit 6 lights the light source 2 with the emergency power supplied from the emergency power supply 3. The control unit 8 has a normal mode for normal times, an emergency mode for emergencies, and a check mode for checking the emergency power supply 3. In the normal mode, the controller 8 turns on the light sources 2 such that the panel A30 has a first brightness. In the emergency mode, the controller 8 turns on the light source 2 so that the surface luminance is a second luminance lower than the first luminance. In the inspection mode, the controller 8 turns on the light source 2 such that the surface luminance is less than or equal to the second luminance and exceeds a third luminance that is lower than the second luminance.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to lighting devices, and more particularly to lighting devices with emergency power supplies. [Background technology]

[0002] Patent Document 1 describes a disaster prevention lighting fixture that includes a lighting circuit that lights a light source using emergency power supplied from an emergency power source when the external power source is stopped, a power timer that measures the period of use of the emergency power source, and a control circuit that performs an inspection to discharge the emergency power source after the measured value of the period of use reaches a predetermined inspection value. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-027706 Summary of the Invention [Problem to be solved by the invention]

[0004] In a disaster prevention lighting fixture (lighting device) such as that described in Patent Document 1, if the brightness of the light source is excessively reduced during inspection of the emergency power supply (emergency power supply), there is a risk that the user of the disaster prevention lighting fixture will feel uncomfortable.

[0005] The present disclosure has been made in consideration of the above-mentioned reasons, and aims to reduce the sense of discomfort felt by users when inspecting an emergency power supply. [Means for solving the problem]

[0006] An illumination device according to one aspect of the present disclosure includes a light source, a panel illuminated by the light source, an emergency power source, a normal lighting unit that lights the light source using normal power supplied from a normal power source, the emergency lighting unit that lights the light source using emergency power supplied from the emergency power source, and a control unit that controls the normal lighting unit and the emergency lighting unit. The control unit has three operating modes: a normal mode in which the normal power source supplies the normal power, an emergency mode in which the normal power source stops supplying the normal power, and an inspection mode in which the emergency power source is inspected. In the normal mode, the control unit controls the normal lighting unit to turn on the light source so that the surface luminance of the panel becomes a first luminance. In the emergency mode, the control unit controls the emergency lighting unit to turn on the light source so that the surface luminance becomes a second luminance lower than the first luminance. In the inspection mode, the control unit controls the emergency lighting unit to turn on the light source so that the surface brightness is equal to or less than the second brightness and exceeds a third brightness that is lower than the second brightness.

[0007] According to one aspect of the present disclosure, there is provided a lighting device comprising a light source, a panel illuminated by the light source, an emergency power source, a normal lighting unit that lights the light source using normal power supplied from a normal power source, the emergency lighting unit that lights the light source using emergency power supplied from the emergency power source, and a control unit that controls the normal lighting unit and the emergency lighting unit. The control unit has three operating modes: a normal mode in which the normal power source supplies the normal power, an emergency mode in which the normal power source stops supplying the normal power, and an inspection mode in which the emergency power source is inspected. In the normal mode, the control unit controls the normal lighting unit to turn on the light source so that the surface luminance of the panel becomes a first luminance. In the emergency mode, the control unit controls the emergency lighting unit to turn on the light source so that the surface luminance becomes a second luminance lower than the first luminance. In the inspection mode, the control unit controls the emergency lighting unit to turn on the light source so that the surface luminance becomes equal to or higher than the first luminance. [Effects of the Invention]

[0008] According to the present disclosure, it is possible to reduce the discomfort felt by the user when inspecting the emergency power supply. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a circuit block diagram of a lighting device according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a circuit block diagram of the lighting device. [Figure 3] FIG. 3 is a perspective view of the appearance of the lighting device. [Figure 4] FIG. 4 is a graph for explaining the operation of the lighting device. DETAILED DESCRIPTION OF THE INVENTION

[0010] Illumination devices 1 according to first and second embodiments of the present disclosure will be described in detail with reference to the drawings. Note that the first and second embodiments and modifications described below are merely examples of the present disclosure, and the present disclosure is not limited to the first and second embodiments and modifications. Various modifications other than the first and second embodiments and modifications can be made depending on the design, etc., as long as they do not deviate from the technical concept of the present disclosure. Furthermore, the following embodiments (including modifications) may be realized in appropriate combinations.

[0011] (Embodiment 1) (1) Overview As shown in Figures 1 to 3, the lighting device 1 of embodiment 1 includes a light source 2, a panel A30 illuminated by the light source 2, an emergency power supply 3, a normal lighting unit 4, an emergency lighting unit 6, and a control unit 8.

[0012] The normal lighting unit 4 lights the light source 2 with normal power supplied from the normal power supply PS1.

[0013] The emergency lighting unit 6 lights up the light source 2 using emergency power supplied from the emergency power supply 3.

[0014] The control unit 8 controls the normal lighting unit 4 and the emergency lighting unit 6.

[0015] The control unit 8 has three operating modes: a normal mode during normal operation when the normal power supply PS1 supplies normal power, an emergency mode during emergency operation when the normal power supply PS1 stops supplying normal power, and an inspection mode in which the emergency power supply 3 is inspected.

[0016] In the normal mode, the control unit 8 controls the normal lighting unit 4 to turn on the light source 2 so that the surface luminance L0 of the panel A30 becomes the first luminance L1.

[0017] In the emergency mode, the control unit 8 controls the emergency lighting unit 6 to light the light source 2 so that the surface luminance L0 becomes a second luminance L2 lower than the first luminance L1.

[0018] In the inspection mode, the control unit 8 controls the emergency lighting unit 6 to turn on the light source 2 so that the surface luminance L0 becomes equal to or less than the second luminance L2 and exceeds a third luminance (lower limit luminance) Le that is lower than the second luminance L2.

[0019] According to the above configuration, it is possible to prevent the surface luminance L0 from becoming excessively low when inspecting the emergency power supply 3. This makes it possible to reduce the sense of discomfort felt by the user when inspecting the emergency power supply 3.

[0020] (2) Details Hereinafter, a lighting device 1 according to a first embodiment will be described in detail with reference to Figs. 1 to 7. The lighting device 1 is, for example, an emergency exit guide light (emergency exit guide light) installed at an emergency exit of a facility. Here, the facility in which the lighting device 1 is installed is, for example, a theater, a planetarium, a movie theater, etc. Furthermore, the lighting device 1 may be an emergency light or a guide light other than an emergency exit guide light.

[0021] (2.1) Lighting equipment configuration As shown in FIG. 1, the lighting device 1 includes a light source 2, an emergency power supply 3, a normal lighting unit 4, a charging unit 5, an emergency lighting unit 6, a first switch SW1, a second switch SW2, a switching drive unit 7, a control unit 8, a timing unit 9, an operation unit 10, and an alarm unit 11.

[0022] As shown in FIG. 3, the lighting device 1 includes a main body A1, a light source unit A2, and a display block A3. The main body A1 is made of synthetic resin and has a rectangular box shape with an opening on the front. The main body A1 houses the emergency power supply 3, normal lighting unit 4, charging unit 5, emergency lighting unit 6, control unit 8, first switch SW1, second switch SW2, switching drive unit 7, timer unit 9, operation unit 10, and alarm unit 11 shown in FIG. 1. The light source unit A2 houses a light source 2 and a light guide that guides light emitted from the light source 2. The display block A3 includes a panel A30 illuminated by the light source 2. A pictogram for evacuation guidance is formed on the panel A30. The display block A3 is attached to the main body A1 so as to cover the remaining portion of the opening of the main body A1 except for the upper portion where the light source unit A2 is attached.

[0023] The light source 2 is configured by a light-emitting unit U1 including at least one (two in this embodiment) light-emitting diode D1 (D11, D12) connected in series. The light source 2 has a first terminal C1 and a second terminal C2 to which normal power and emergency power are supplied. The first terminal C1 is connected to the anode of the light-emitting diode D11 of the light-emitting unit U1. The second terminal C2 is connected to the cathode of the light-emitting diode D12 of the light-emitting unit U1. The light source 2 may be configured by connecting two or more sets of light-emitting units U1 in parallel. Furthermore, the light-emitting unit U1 is not limited to one including at least one light-emitting diode D1, and may also include at least one cold cathode fluorescent lamp or the like.

[0024] The emergency power supply 3 is, for example, a rechargeable secondary battery. The emergency power supply (hereinafter referred to as secondary battery) 3 is, for example, a nickel-metal hydride secondary battery, a lithium-ion secondary battery, or the like.

[0025] When the lighting device 1 is an emergency light, the lighting device 1 is configured so that the light emitted from the light source 2 illuminates the back side of a panel A30 (see FIG. 3) on which pictograms for evacuation guidance are formed.

[0026] The normal lighting unit 4 lights the light source 2 with normal power supplied from the normal power supply PS1. The normal power supply PS1 is, for example, a commercial power system with an effective value of 100V or 200V. The normal lighting unit 4, for example, has a rectifying and smoothing unit that rectifies and smoothes the AC voltage supplied from the normal power supply PS1, and a step-down unit that steps down the DC voltage input from the rectifying and smoothing unit. The rectifying and smoothing unit includes, for example, a full-wave rectifier made up of a diode bridge, a smoothing capacitor that smooths the pulsating voltage output from the full-wave rectifier, and a power factor correction circuit made up of a step-up chopper circuit, etc. The step-down unit also includes, for example, a flyback converter.

[0027] 1, the normal lighting unit 4 has a first output terminal Cp1 and a second output terminal Cp2, and is configured to be able to control the output of the DC voltage stepped down by the flyback converter between the first output terminal Cp1 and the second output terminal Cp2 based on a command signal from the control unit 8. When outputting the DC voltage, the first output terminal Cp1 becomes the high potential side, and the second output terminal Cp2 becomes the low potential side.

[0028] The charging unit 5 is connected to the first output terminal Cp1 and the second output terminal Cp2, and is configured to charge the secondary battery 3 with the DC current output from the normal lighting unit 4. The charging unit 5 is configured to be able to control the output of DC current to the secondary battery 3 based on a command signal from the control unit 8. In other words, the charging unit 5 is configured to be able to control the output of DC current to the secondary battery 3 based on the command signal from the control unit 8.

[0029] The emergency lighting unit 6 lights the light source 2 with emergency power supplied from the secondary battery 3 when the service power supply PS1 is stopped due to a power outage or the like, or when the secondary battery 3 is being inspected. Specifically, the emergency lighting unit 6 lights the light source 2 with a DC voltage applied from the secondary battery 3 when the service power supply PS1 is stopped due to a power outage or the like, or when the secondary battery 3 is being inspected. The emergency lighting unit 6 has a step-down unit that steps down the DC voltage input from the secondary battery 3. The step-down unit includes, for example, a flyback converter. Note that the step-down unit of the emergency lighting unit 6 is not limited to a flyback converter, and may be a step-down chopper circuit.

[0030] The emergency lighting unit 6 has a third output terminal Cp3 and a fourth output terminal Cp4, and is configured to be able to control the output of the DC voltage stepped down by the step-down unit between the third output terminal Cp3 and the fourth output terminal Cp4 based on a command signal from the control unit 8. In other words, the emergency lighting unit 6 is configured to be able to control the output of the DC voltage between the third output terminal Cp3 and the fourth output terminal Cp4 based on a command signal from the control unit 8. When outputting the DC voltage, the third output terminal Cp3 becomes the high potential side, and the fourth output terminal Cp4 becomes the low potential side.

[0031] The first switch SW1 and the second switch SW2 are controlled to be turned on / off by the control unit 8 via the switching driver 7. The first switch SW1 and the second switch SW2 are, for example, semiconductor switches such as MOSFETs. Note that the first switch SW1 and the second switch SW2 may also be analog switches, electromagnetic relays, etc.

[0032] The switching driver 7 controls the first switch SW1 and the second switch SW2 to an on state or an off state independently in response to a control signal input from the controller 8.

[0033] Here, the connection relationships among the light source 2, normal lighting unit 4, emergency lighting unit 6, first switch SW1, and second switch SW2 will be described. The first terminal C1 of the light source 2 is connected to the first output terminal Cp1 on the high potential side of the normal lighting unit 4 via the first switch SW1. The first terminal C1 is also connected to the third output terminal Cp3 on the high potential side of the emergency lighting unit 6 via the second switch SW2. The second terminal C2 of the light source 2 is connected to the second output terminal Cp2 on the low potential side of the normal lighting unit 4. The second terminal C2 is also connected to the fourth output terminal Cp4 on the low potential side of the emergency lighting unit 6.

[0034] The control unit 8 mainly comprises, for example, a computer system having one or more processors and a memory. The functions of the control unit 8 are realized by the processor of the computer system executing a program recorded in the memory of the computer system. The program may be recorded in the memory, or may be provided via a telecommunications line such as the Internet, or may be recorded on a non-transitory recording medium such as a memory card and provided.

[0035] The control unit 8 controls the normal lighting unit 4, the charging unit 5, the emergency lighting unit 6 and the switching drive unit 7.

[0036] The timekeeping unit 9 has a timer IC (Integrated Circuit) or an RTC (Real Time Clock) module. That is, the timekeeping unit 9 is configured to measure the elapsed time from an arbitrary point in time using a timer IC, or to measure the date and time using an RTC module. However, the timekeeping unit 9 may also be realized by a timer function or real-time clock function installed in the control unit 8.

[0037] The timer 9 measures the time that the utility power supply PS1 is energized. When a predetermined period of time has elapsed from a predetermined point in time, the timer 9 outputs an inspection start signal to the control unit 8. Note that the energization time refers to the accumulated time that utility power has been supplied from the utility power supply PS1 to the lighting device 1. Note that the timer 9 may measure the date and time using an RTC module.

[0038] The operation unit 10 has a function of accepting user operations. One example of the operation unit 10 is a push button switch. As shown in FIG. 3, the operation unit 10 is provided so as to be exposed to the outside through a through hole H1 provided in the bottom surface A10 of the main body A1. When operated by the user, the operation unit 10 accepts the user operation and outputs an operation input signal corresponding to the accepted operation to the control unit 8.

[0039] The notification unit 11 is controlled by the control unit 8 and has a function of notifying the user of the state of the secondary battery 3. One example of the notification unit 11 is a monitor lamp including a light-emitting diode. As shown in FIG. 3, the notification unit 11 is provided so as to be exposed to the outside through a through-hole H2 provided in the bottom surface A10 of the main body A1. The notification unit 11 may also be a speaker device or the like that notifies the user of the state of the secondary battery 3 by sound.

[0040] The lighting device 1 further includes a control power supply unit (not shown). The control power supply unit is configured to generate a control power supply voltage from the DC voltage output from the normal lighting unit 4 and the DC voltage discharged from the secondary battery 3. The control power supply voltage generated by the control power supply unit is supplied to circuits having active elements, namely, the normal lighting unit 4, the emergency lighting unit 6, the switching driver unit 7, the control unit 8, the timer unit 9, and the alarm unit 11.

[0041] (2.2) Operation of lighting devices Next, the basic operation of the lighting device 1 will be described. The control unit 8 has four operation modes (normal mode, emergency mode, constant lights-out mode, and inspection mode). The normal mode is an operation mode during normal operation when the normal power supply PS1 supplies normal power, and is an operation mode in which the normal lighting unit 4 is controlled to supply normal power to the light source 2, thereby turning on the light source 2. The emergency mode is an operation mode during emergency operation when the normal power supply PS1 stops supplying normal power, and is an operation mode in which the emergency lighting unit 6 is controlled to supply emergency power to the light source 2, thereby turning on the light source 2. The constant lights-out mode is an operation mode in which the light source 2 is kept off. The inspection mode is an operation mode in which the secondary battery 3 is inspected while the normal power supply PS1 is supplying normal power, and is an operation mode in which the emergency lighting unit 6 is controlled to supply emergency power to the light source 2, thereby turning on the light source 2.

[0042] The control unit 8 is configured to operate in one of four operating modes.

[0043] When normal power is supplied from the normal power supply PS1, the control unit 8 basically operates in normal mode. In normal mode, as shown in Fig. 1, the control unit 8 controls the first switch SW1 to be on and the second switch SW2 to be off, causing the normal lighting unit 4 to light the light source 2 and the charging unit 5 to charge the secondary battery 3.

[0044] 4, in the normal mode, the control unit 8 controls the normal lighting unit 4 to turn on the light source 2 so that the luminance (surface luminance) L0 of the surface of the panel A30 illuminated from behind by the light source 2 becomes a first luminance L1. Specifically, the control unit 8 controls the normal lighting unit 4 so that the value of the current (load current) I0 flowing through the light source 2 becomes a first current value I1 at which the surface luminance L0 becomes the first luminance L1.

[0045] Furthermore, the control unit 8 operates in emergency mode when normal power is no longer supplied from the normal power supply PS1 due to a power outage or the like. In emergency mode, the control unit 8 stops the normal lighting unit 4 and the charging unit 5, controls the first switch SW1 to be turned off, and controls the second switch SW2 to be turned on, causing the emergency lighting unit 6 to light the light source 2 (see FIG. 2).

[0046] In the emergency mode, the control unit 8 controls the emergency lighting unit 6 to light the light source 2 so that the surface luminance L0 becomes a second luminance L2 lower than the first luminance L1. In this embodiment, the second luminance L2 is approximately 1 / 3 of the first luminance L1. The second luminance L2 is also higher than the lower limit luminance Le (see FIG. 4). The lower limit luminance Le is the value of the surface luminance L0 required in an emergency (when the utility power source PS1 stops supplying utility power due to a power outage or the like). The lower limit luminance Le is the minimum value required to guide the user in an emergency, and is specified, for example, in the standard (JIL standard) established by the Japan Lighting Manufacturers' Association.

[0047] More specifically, as shown in FIG. 4, the control unit 8 controls the emergency lighting unit 6 so that the value of the load current I0 flowing through the light source 2 becomes a second current value I2 that is 1 / 3 times the first current value I1.

[0048] Furthermore, when an external light-off signal is input during operation in the normal mode, the control unit 8 switches the operation mode to the constant light-off mode. In the constant light-off mode, the control unit 8 controls the first switch SW1 to be turned off and the second switch SW2 to be turned off while keeping the constant lighting unit 4 and the charging unit 5 operating. In this way, the control unit 8 causes the charging unit 5 to charge the secondary battery 3 while maintaining the light source 2 in an off state.

[0049] Furthermore, when the control unit 8 receives an inspection start signal output from the timer unit 9 while operating in the normal mode, it switches the operation mode to the inspection mode and inspects the secondary battery 3. Note that, when an operation input signal is input from the operation unit 10 while operating in the normal mode, the control unit 8 also switches the operation mode to the inspection mode and inspects the secondary battery 3. In other words, the control unit 8 also switches the operation mode from the normal mode to the inspection mode when the operation unit 10 is operated by a user. Note that the user who operates the operation unit 10 is, for example, the manager of the facility where the lighting device 1 is installed. This allows the inspection of the secondary battery 3 to be performed at a timing desired by the user (manager).

[0050] In the inspection mode, the control unit 8 stops the normal lighting unit 4 and the charging unit 5, controls the first switch SW1 to be off, and controls the second switch SW2 to be on, causing the emergency lighting unit 6 to turn on the light source 2 (see FIG. 2). In the inspection mode, the control unit 8 turns on the light source 2 for a predetermined time. That is, the control unit 8 operates in the inspection mode for the predetermined time. Note that in the inspection mode, the predetermined time for turning on the light source 2 is 60 minutes or less. For example, the predetermined time is 20 minutes or 60 minutes if the lighting device 1 is an emergency light, and 30 minutes or 60 minutes if the lighting device 1 is an emergency light.

[0051] Furthermore, in the inspection mode, the control unit 8 controls the emergency lighting unit 6 to turn on the light source 2 so that the surface luminance L0 becomes equal to or less than the second luminance L2 and exceeds the lower limit luminance Le.

[0052] This makes it possible to prevent the surface luminance L0 from becoming excessively low to the point where it falls below the lower limit luminance Le when inspecting the secondary battery 3, thereby reducing the sense of discomfort felt by the user when inspecting the secondary battery 3.

[0053] In the inspection mode, the control unit 8 monitors whether a predetermined current is flowing through the light source 2, and compares the voltage of the secondary battery 3 after the light source 2 has been turned on for a predetermined time (i.e., after the inspection of the secondary battery 3 has been completed) with a threshold value to determine whether or not the secondary battery 3 needs to be replaced. If an abnormality is found during the inspection (such as the light source 2 not lighting up or the voltage of the secondary battery 3 falling below the threshold value), the control unit 8 notifies the user of the occurrence of the abnormality by, for example, flashing the notification unit 11, which is a monitor lamp.

[0054] After the inspection of the secondary battery 3 is completed, the control unit 8 switches the operation mode from the inspection mode to the normal mode.

[0055] The timing unit 9 resets the counting of the power-on time after a certain time (for example, the time required to fully charge the secondary battery 3) has elapsed since the inspection of the secondary battery 3 was completed, and starts counting the power-on time anew.

[0056] The timing unit 9 outputs an inspection start signal to the control unit 8 when a predetermined period of time has elapsed from a predetermined point in time after the completion of the inspection of the secondary battery 3 (in this operation example, the point in time when the timing unit 9 newly starts counting the power-on time after the completion of the inspection of the secondary battery 3). In other words, when a predetermined period of time has elapsed from the predetermined point in time after the completion of the inspection of the secondary battery 3, the control unit 8 switches the operation mode from normal mode to inspection mode and inspects the secondary battery 3. This allows the inspection of the secondary battery 3 to be carried out periodically. The predetermined period is one year or less. For example, the predetermined period is six months or three months. This allows the inspection of the secondary battery 3 to be carried out periodically.

[0057] (Embodiment 2) The lighting fixture 1 according to the second embodiment differs from the lighting fixture 1 according to the first embodiment in the operation during inspection of the emergency power supply 3. The operation during inspection of the lighting fixture 1 according to the second embodiment will be described below.

[0058] When the control unit 8 receives an inspection start signal output from the timer unit 9 while operating in the normal mode, it switches the operation mode to the inspection mode and inspects the secondary battery 3 .

[0059] In the inspection mode, the control unit 8 stops the normal lighting unit 4 and the charging unit 5, controls the first switch SW1 to be off, and controls the second switch SW2 to be on, causing the emergency lighting unit 6 to turn on the light source 2 (see FIG. 2). In the inspection mode, the control unit 8 turns on the light source 2 for a predetermined time. In other words, the control unit 8 operates in the inspection mode for the predetermined time.

[0060] In the inspection mode, the control unit 8 controls the emergency lighting unit 6 to turn on the light source 2 so that the surface luminance L0 is equal to or greater than the first luminance L1. Here, the first luminance L1 is equal to or greater than the luminance required during normal operation when the utility power supply PS1 supplies utility power. More specifically, the first luminance L1 is equal to or greater than the lower limit luminance Ln required during normal operation. The lower limit luminance Ln is the minimum value required to guide the user during normal operation, and is defined, for example, in the standard (JIL standard) established by the Japan Lighting Manufacturers' Association (JIL). That is, in the inspection mode, the control unit 8 turns on the light source 2 so that the surface luminance L0 is equal to or greater than the lower limit luminance Ln. This prevents the surface luminance L0 from becoming excessively lower than the lower limit luminance Ln during inspection of the secondary battery 3, thereby reducing the sense of discomfort felt by the user during inspection of the secondary battery 3.

[0061] (Variation) The above-described first and second embodiments are merely a part of various embodiments of the present invention. Furthermore, the first and second embodiments can be modified in various ways depending on the design, etc., as long as the object of the present invention can be achieved. Modifications of the above embodiments are listed below.

[0062] In the above-described first and second embodiments, the operation mode of the control unit 8 is switched by controlling the on / off of two switches (first switch SW1 and second switch SW2), but the number of switches may be one or three or more as long as the operation mode of the control unit 8 can be switched.

[0063] The lighting device 1 according to the present disclosure includes a computer system. The computer system is primarily composed of a processor and memory as hardware. The processor executes a program stored in the memory of the computer system to realize each function of the control unit 8 according to the present disclosure. The program may be pre-stored in the memory of the computer system, provided via a telecommunications line, or provided in a non-transitory recording medium such as a memory card, optical disk, or hard disk drive that is readable by the computer system. The processor of the computer system is composed of one or more electronic circuits, including a semiconductor integrated circuit (IC) or a large-scale integrated circuit (LSI). The IC or LSI referred to here is referred to by different names depending on the degree of integration, and includes integrated circuits called system LSI, very large scale integration (VLSI), or ultra large scale integration (ULSI). Furthermore, a field-programmable gate array (FPGA), which is programmable after the LSI is manufactured, or a logic device capable of reconfiguring the connections within the LSI or the circuit partitions within the LSI, can also be used as a processor. Multiple electronic circuits may be integrated on a single chip or distributed across multiple chips. The multiple chips may be integrated into one device or distributed across multiple devices. The computer system referred to here includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller also comprises one or more electronic circuits, including semiconductor integrated circuits or large-scale integrated circuits.

[0064] (4) Summary As described above, the lighting device (1) of the first aspect includes the light source (2), the panel (A30), the emergency power supply (3), the normal lighting unit (4), the emergency lighting unit (6), and the control unit (8). The panel (A30) is illuminated by the light source (2). The normal lighting unit (4) lights the light source (2) using normal power supplied from the normal power supply (PS1). The emergency lighting unit (6) lights the light source (2) using emergency power supplied from the emergency power supply (3). The control unit (8) controls the normal lighting unit (4) and the emergency lighting unit (6). The control unit (8) has three operating modes: a normal mode in which the normal power supply (PS1) supplies normal power; an emergency mode in which the normal power supply (PS1) stops supplying normal power; and an inspection mode in which the emergency power supply (3) is inspected. In the normal mode, the control unit (8) controls the normal lighting unit (4) to turn on the light source (2) so that the surface luminance (L0) of the panel (A30) becomes a first luminance (L1). In the emergency mode, the control unit (8) controls the emergency lighting unit (6) to turn on the light source (2) so that the surface luminance (L0) becomes a second luminance (L2) lower than the first luminance (L1). In the inspection mode, the control unit (8) controls the emergency lighting unit (6) to turn on the light source (2) so that the surface luminance (L0) becomes equal to or lower than the second luminance (L2) and exceeds a third luminance (Le) lower than the second luminance (L2).

[0065] According to this aspect, it is possible to prevent the surface luminance (L0) from becoming excessively low when inspecting the emergency power supply (3), thereby reducing the sense of discomfort felt by the user when inspecting the emergency power supply (3).

[0066] In the lighting device (1) of the second embodiment, in the first embodiment, the third luminance (Le) is the luminance required in an emergency.

[0067] According to this aspect, when inspecting the emergency power supply (3), it is possible to prevent the surface luminance (L0) from becoming excessively low to the third luminance (Le) or less, and it is possible to reduce the sense of discomfort felt by the user when inspecting the emergency power supply (3).

[0068] A lighting fixture (1) of a third aspect includes a light source (2), a panel (A30), an emergency power supply (3), a normal use lighting unit (4), an emergency lighting unit (6), and a control unit (8). The panel (A30) is illuminated by the light source (2). The normal use lighting unit (4) lights the light source (2) using normal power supplied from a normal power supply (PS1). The emergency lighting unit (6) lights the light source (2) using emergency power supplied from the emergency power supply (3). The control unit (8) controls the normal use lighting unit (4) and the emergency lighting unit (6). The control unit (8) has three operating modes: a normal mode in which the normal power supply (PS1) supplies normal power; an emergency mode in which the normal power supply (PS1) stops supplying normal power; and an inspection mode in which the emergency power supply (3) is inspected. In the normal mode, the control unit (8) controls the normal lighting unit (4) to turn on the light source (2) so that the surface luminance (L0) of the panel (A30) becomes a first luminance (L1). In the emergency mode, the control unit (8) controls the emergency lighting unit (6) to turn on the light source (2) so that the surface luminance (L0) becomes a second luminance (L2) lower than the first luminance (L1). In the inspection mode, the control unit (8) controls the emergency lighting unit (6) to turn on the light source (2) so that the surface luminance (L0) becomes equal to or higher than the first luminance (L1).

[0069] According to this aspect, it is possible to prevent the surface luminance (L0) from becoming excessively low when inspecting the emergency power supply (3), thereby reducing the sense of discomfort felt by the user when inspecting the emergency power supply (3).

[0070] In the lighting device (1) of the fourth aspect, in the third aspect, the first luminance (L1) is equal to or greater than the lower limit luminance (Ln) required under normal circumstances.

[0071] According to this aspect, when inspecting the emergency power supply (3), it is possible to prevent the surface luminance (L0) from becoming excessively low below the lower limit luminance (Ln), thereby reducing the sense of discomfort felt by the user when inspecting the emergency power supply (3).

[0072] The lighting device (1) of a fifth aspect is any one of the first to fourth aspects, further comprising a first switch (SW1) and a second switch (SW2) whose on / off is controlled by a control unit (8). The light source (2) has a first terminal (C1) and a second terminal (C2) to which normal power and emergency power are supplied. The first terminal (C1) is connected to a first output terminal (Cp1) on the high potential side of the normal lighting unit (4) via the first switch (SW1), and is connected to a third output terminal (Cp3) on the high potential side of the emergency lighting unit (6) via the second switch (SW2). The second terminal (C2) is connected to a second output terminal (Cp2) on the low potential side of the normal lighting unit (4), and is connected to a fourth output terminal (Cp4) on the low potential side of the emergency lighting unit (6). The control unit (8) controls the first switch (SW1) to be on and the second switch (SW2) to be off in normal mode. In the inspection mode, the control unit (8) controls the first switch (SW1) to be OFF and the second switch (SW2) to be ON.

[0073] According to this aspect, it is possible to prevent the surface luminance (L0) from becoming excessively low when inspecting the emergency power supply (3), thereby reducing the sense of discomfort felt by the user when inspecting the emergency power supply (3).

[0074] The lighting device (1) of a sixth aspect is the lighting device (1) of any one of the first to fifth aspects, further including an operation unit (10) that accepts a user's operation. When the operation unit (10) is operated by the user, the control unit (8) switches the operation mode from a normal mode to an inspection mode.

[0075] According to this aspect, the emergency power supply (3) can be inspected at a timing desired by a user, such as a manager of a facility where the lighting device (1) is installed.

[0076] In the lighting device (1) of a seventh aspect, in any of the first to sixth aspects, the control unit (8) switches the operation mode from the inspection mode to the normal mode when inspection of the emergency power supply (3) is completed. The control unit (8) switches the operation mode from the normal mode to the inspection mode when a predetermined period has elapsed from a predetermined point in time after the completion of inspection of the emergency power supply (3).

[0077] According to this embodiment, the emergency power supply (3) can be inspected periodically.

[0078] In the lighting device (1) of the eighth aspect, in the seventh aspect, the predetermined period is one year or less.

[0079] According to this embodiment, the emergency power supply (3) can be inspected periodically.

[0080] In the lighting device (1) of the ninth aspect, in any one of the first to eighth aspects, the light source (2) is turned on for a predetermined time in the inspection mode.

[0081] According to this aspect, inspections required by law can be carried out automatically.

[0082] In the lighting device (1) of the tenth aspect, in the ninth aspect, the predetermined time is 60 minutes or less.

[0083] According to this aspect, inspections required by law can be carried out automatically.

[0084] In the lighting device (1) of an eleventh aspect, in any one of the first to tenth aspects, the emergency power supply (3) is a secondary battery.

[0085] According to this embodiment, the emergency power supply (3) can be charged and used repeatedly. [Explanation of symbols]

[0086] 1. Lighting equipment 2 light source 3 Emergency power supply 4 Regular lighting section 6 Emergency lighting section 8 Control Unit 10 Control section A30 Panel C1 1st terminal C2 2nd terminal Cp1 First output terminal Cp2 Second output terminal Cp3 3rd output terminal Cp4 4th output terminal L0 surface brightness L1 First luminance L2 Second Luminance Le third luminance Ln Lower limit luminance PS1 regular power supply SW1 First switch SW2 Second switch

Claims

1. A light source and a panel illuminated by the light source; Emergency power supply and a normal lighting unit that lights the light source using normal power supplied from a normal power source; an emergency lighting unit that lights up the light source using emergency power supplied from the emergency power supply; a control unit that controls the normal lighting unit and the emergency lighting unit, the control unit has, as operation modes, a normal mode during normal operation when the utility power supply supplies the utility power, an emergency mode during an emergency when the utility power supply stops supplying the utility power, and an inspection mode in which inspection of the emergency power supply is performed, The control unit In the normal mode, the normal lighting unit is controlled to turn on the light source so that the surface luminance of the panel becomes a first luminance; In the emergency mode, the emergency lighting unit is controlled to turn on the light source so that the surface luminance becomes a second luminance lower than the first luminance; In the inspection mode, the emergency lighting unit is controlled to turn on the light source so that the surface luminance is equal to or less than the second luminance and exceeds a third luminance lower than the second luminance. Lighting equipment.

2. The third brightness is a brightness required in the emergency. The lighting device according to claim 1 .

3. A light source and a panel illuminated by the light source; Emergency power supply and a normal lighting unit that lights the light source using normal power supplied from a normal power source; an emergency lighting unit that lights up the light source using emergency power supplied from the emergency power supply; a control unit that controls the normal lighting unit and the emergency lighting unit, the control unit has, as operation modes, a normal mode during normal operation when the utility power source supplies the utility power, an emergency mode during an emergency when the utility power source stops supplying the utility power, and an inspection mode in which inspection of the emergency power source is performed, The control unit In the normal mode, the normal lighting unit is controlled to turn on the light source so that the surface luminance of the panel becomes a first luminance; In the emergency mode, the emergency lighting unit is controlled to turn on the light source so that the surface luminance becomes a second luminance lower than the first luminance; In the inspection mode, the emergency lighting unit is controlled to turn on the light source so that the surface brightness is equal to or higher than the first brightness. Lighting equipment.

4. The first luminance is equal to or greater than the luminance required in the normal state.

4. The lighting device according to claim 3.

5. The device further includes a first switch and a second switch that are controlled to be turned on / off by the control unit, the light source has a first terminal and a second terminal to which the normal power and the emergency power are supplied, the first terminal is connected to a first output terminal on a high potential side of the normal lighting unit via the first switch, and is connected to a third output terminal on a high potential side of the emergency lighting unit via the second switch; The second terminal is connected to a second output terminal on the low potential side of the normal lighting unit and to a fourth output terminal on the low potential side of the emergency lighting unit, The control unit In the normal mode, the first switch is controlled to be on and the second switch is controlled to be off; In the inspection mode, the first switch is controlled to be off and the second switch is controlled to be on. The lighting device according to any one of claims 1 to 4.

6. further comprising an operation unit that accepts user operations; When the operation unit is operated by the user, the control unit switches the operation mode from the normal mode to the inspection mode. The lighting device according to any one of claims 1 to 4.

7. The control unit When the inspection is completed, the operation mode is switched from the inspection mode to the normal mode; when a predetermined period of time has elapsed from a predetermined point in time after the completion of the inspection, the operation mode is switched from the normal mode to the inspection mode. The lighting device according to any one of claims 1 to 4.

8. The predetermined period is one year or less.

8. The lighting device according to claim 7.

9. The control unit turns on the light source for a predetermined time in the inspection mode. The lighting device according to any one of claims 1 to 4.

10. The predetermined time is 60 minutes or less.

10. The lighting device according to claim 9.

11. The emergency power supply is a secondary battery. The lighting device according to any one of claims 1 to 4.

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