Lighting device

Abstract

To reduce a sense of incongruity given to a user when inspecting an emergency power supply.SOLUTION: The lighting device 1 includes a first light source 21, a second light source 22, an emergency power supply 3, a regular lighting part 4, an emergency lighting part 6, and a control part 8. The regular lighting section 4 lights the first and second light sources 21, 22 with a regular power source PS1. The emergency lighting part 6 lights the second light source 22 by the emergency power source 3. The controller 8 controls the regular light 4 and the emergency light 6. The control part 8 has, as operation modes, a normal mode when the regular power source PS1 supplies regular power, an emergency mode when the regular power source PS1 stops, and a check mode for checking the emergency power source 3. The controller 8 turns on the first light source 21 and the second light source 22 in the normal mode. The controller 8 turns on the second light source 22 in the emergency mode. In the inspection mode, the controller 8 controls the regular light section 4 to light the first light source 21 and controls the emergency light section 6 to light the second light source 22.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 disaster prevention lighting fixtures (lighting devices) such as those described in Patent Document 1, the lighting state of the light source differs between normal use and when the emergency power source (emergency power supply) is being inspected, which could cause discomfort to users of the disaster prevention lighting fixtures when inspecting the emergency power source (emergency power supply).

[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] According to one aspect of the present disclosure, there is provided a lighting device comprising: a first light source; a second light source connected to the first light source; an emergency power source; a normal lighting unit that turns on the first light source and the second light source using normal power supplied from a normal power source; the emergency lighting unit that turns on the second light source using the 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 when the normal power source supplies the normal power; an emergency mode when the normal power source stops supplying the normal power; and an inspection mode in which the emergency power source is inspected while the normal power source is supplying the normal power. In the normal mode, the control unit controls the normal lighting unit to turn on the first light source and the second light source; in the emergency mode, the control unit controls the emergency lighting unit to turn on the second light source; and in the inspection mode, the control unit controls the normal lighting unit to turn on the first light source and the emergency lighting unit to turn on the second light source. [Effects of the Invention]

[0007] 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]

[0008] [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. DETAILED DESCRIPTION OF THE INVENTION

[0009] An illumination device 1 according to an embodiment of the present disclosure will be described in detail with reference to the drawings. Note that the embodiment and modifications described below are merely examples of the present disclosure, and the present disclosure is not limited to the embodiment and modifications. Various modifications other than the embodiment 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.

[0010] (1) Overview As shown in FIG. 1, the lighting device 1 according to this embodiment includes a first light source 21, a second light source 22, an emergency power supply 3, a normal lighting unit 4, an emergency lighting unit 6, and a control unit 8.

[0011] The second light source 22 is connected to the first light source 21 .

[0012] The normal lighting unit 4 lights up the first light source 21 and the second light source 22 using normal power supplied from the normal power supply PS1.

[0013] The emergency lighting unit 6 lights up the second light source 22 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 when the normal power supply PS1 is supplying normal power, an emergency mode when the normal power supply PS1 has stopped supplying normal power, and an inspection mode in which the emergency power supply 3 is inspected when the normal power supply PS1 is supplying normal power.

[0016] In the normal mode, the control unit 8 controls the normal lighting unit 4 to turn on the first light source 21 and the second light source 22.

[0017] In the emergency mode, the control unit 8 controls the emergency lighting unit 6 to turn on the second light source 22.

[0018] In the inspection mode, the control unit 8 controls the normal lighting unit 4 to turn on the first light source 21, and controls the emergency lighting unit 6 to turn on the second light source 22.

[0019] According to the above configuration, the first light source 21 and the second light source 22 are turned on whether the operation mode of the control unit 8 is the normal mode or the inspection mode. Therefore, the brightness perceived by the user does not drop suddenly when the emergency power supply 3 is inspected, and it is possible to reduce the sense of discomfort felt by the user (for example, a user of a facility in which the lighting device 1 is installed) when the emergency power supply 3 is inspected.

[0020] Furthermore, with the above configuration, when inspecting the emergency power supply 3, the possibility that the user will mistakenly believe that a power outage has occurred can be reduced.

[0021] (2)Details Hereinafter, the lighting device 1 according to this embodiment will be described in detail with reference to Figs. 1 to 3. 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 may be, for example, a theater, a planetarium, a movie theater, etc. The lighting device 1 may also be an emergency light or a guide light other than an emergency exit guide light (for example, a stairway guide light, etc.).

[0022] (2.1) Lighting equipment configuration 1, the lighting device 1 includes a light source unit 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 driver 7, a control unit 8, a timer unit 9, an operation unit 10, and an alarm unit 11. Although not shown in the figure, the lighting device 1 also includes a diode for preventing backflow as appropriate.

[0023] 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 the light source unit 2 and a light guide that guides light emitted from the light source unit 2. The display block A3 includes a panel A30 illuminated by the light source unit 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.

[0024] The light source unit 2 includes a first light source 21 and a second light source 22 connected in parallel to the first light source 21 .

[0025] The first light source 21 is configured by two sets of light-emitting units U1 connected in parallel, each set including at least one light-emitting diode D1 (D11, D12) connected in series (two in this embodiment). The first light source 21 has a first terminal C1 and a second terminal C2 to which normal power is supplied. The first terminal C1 is connected to the anode of the light-emitting diode D11 of each light-emitting unit U1. The second terminal C2 is connected to the cathode of the light-emitting diode D12 of each light-emitting unit U1. The first light source 21 may be configured by one set of light-emitting units U1, or may be configured by three or more sets of light-emitting units U1 connected in parallel. Furthermore, the light-emitting unit U1 is not limited to one including at least one light-emitting diode D1, but may also include at least one cold cathode fluorescent lamp or the like.

[0026] The second light source 22 is composed of one light-emitting unit U1. The second light source 22 may be composed of two or more sets of light-emitting units U1 connected in parallel. The second light source 22 has a third terminal C3 and a fourth terminal C4 to which normal power and emergency power are supplied. The third terminal C3 is connected to the anode of the light-emitting diode D11. The fourth terminal C4 is connected to the cathode of the light-emitting diode D12.

[0027] 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.

[0028] When the lighting device 1 is an emergency light, the first light source 21 and the second light source 22 are configured so that the light emitted from the first light source 21 and the second light source 22 illuminates the back side of a panel A30 (see Figure 3) on which an evacuation guidance pictogram is formed.

[0029] The service lighting unit 4 lights at least the first light source 21 of the first light source 21 and the second light source 22 using service power supplied from a service power source PS1. The service power source PS1 is, for example, a commercial power system with an effective voltage of 100V or 200V. The service lighting unit 4, for example, includes a rectifying and smoothing unit that rectifies and smoothes the AC voltage supplied from the service power source 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 power factor correction circuit including a full-wave rectifier formed by a diode bridge, a smoothing capacitor that smooths the pulsating voltage output from the full-wave rectifier, and a step-up chopper circuit. The step-down unit includes, for example, a flyback converter. The service 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 step-down unit between the first output terminal Cp1 and the second output terminal Cp2 based on a command signal from the control unit 8. Furthermore, the normal lighting unit 4 is configured to be able to stop the output of DC voltage between the first output terminal Cp1 and the second output terminal Cp2 while maintaining the output of DC voltage to the charging unit 5 based on a command signal from the control unit 8. This function is realized, for example, by a switch (not shown) that cuts off the electrical path between the step-down unit and the first output terminal Cp1.

[0030] When a DC voltage is output, the first output terminal Cp1 is at a high potential side, and the second output terminal Cp2 is at a low potential side.

[0031] The charging unit 5 is configured to charge the secondary battery 3 with a DC current output from a step-down unit included in 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 a command signal from the control unit 8.

[0032] The emergency lighting unit 6 lights the second light source 22 using emergency power supplied from the secondary battery 3 when the utility 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 second light source 22 using a DC voltage applied from the secondary battery 3 when the utility 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. 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 a DC voltage is output, the third output terminal Cp3 is at the high potential side, and the fourth output terminal Cp4 is at the low potential side.

[0033] 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 semiconductor switching elements such as MOSFETs (Metal-Oxide-Semiconductor Field-Effect Transistors). The first switch SW1 and the second switch SW2 may also be analog switches, electromagnetic relays, etc.

[0034] 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.

[0035] Here, the connection relationships among the first light source 21, the second light source 22, the normal lighting unit 4, the emergency lighting unit 6, the first switch SW1, and the second switch SW2 will be described. The first terminal C1 of the first light source 21 is connected to the first output terminal Cp1 on the high potential side of the normal lighting unit 4. The first terminal C1 is also connected to the third terminal C3 of the second light source 22 via the first switch SW1. The second terminal C2 of the first light source 21 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 terminal C4 of the second light source 22. The third terminal C3 is connected to the third output terminal Cp3 on the high potential side of the emergency lighting unit 6 via the second switch SW2. The fourth terminal C3 is connected to the fourth output terminal Cp4 on the low potential side of the emergency lighting unit 6.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] (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, normal-off mode, and inspection mode). The normal mode is an operation mode when the normal power supply PS1 is supplying normal power, and is an operation mode in which the normal lighting unit 4 is controlled to turn on the first light source 21 and the second light source 22. The emergency mode is an operation mode when the normal power supply PS1 has stopped supplying normal power, and is an operation mode in which the emergency lighting unit 6 is controlled to turn on the second light source 22. The normal-off mode is an operation mode in which the first light source 21 and the second light source 22 are kept off. The inspection mode is an operation mode in which the secondary battery 3 is inspected when the normal power supply PS1 is supplying normal power, and is an operation mode in which the normal lighting unit 4 is controlled to turn on the first light source 21 and the emergency lighting unit 6 is controlled to turn on the second light source 22.

[0044] The control unit 8 is configured to operate in one of four operating modes.

[0045] When normal power is supplied from the normal power supply PS1, the control unit 8 basically operates in normal mode. In normal mode, 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 first light source 21 and the second light source 22 and the charging unit 5 to charge the secondary battery 3.

[0046] In the normal mode, the same voltage is applied from the normal lighting unit 4 to the first light source 21 and the second light source 22, which are connected in parallel. The first light source 21 is configured by two sets of light-emitting units U1 connected in parallel, and the second light source 22 is configured by one set of light-emitting units U1. Therefore, the same load current flows through the two sets of light-emitting units U1 of the first light source 21 and the one set of light-emitting units U1 of the second light source 22. That is, the value of the current flowing through the first light source 21 is twice the value of the current flowing through the second light source 22. As a result, when the operation mode of the control unit 8 is the normal mode, the ratio of the brightness of the first light source 21 to the brightness of the second light source 22 is 2:1. Note that, in this embodiment, the "brightness of the light source" refers to, for example, the brightness of the surface of the panel A30 illuminated from behind by a light source (at least one of the first light source 21 and the second light source 22). Note that the "brightness of the light source" may also refer to the brightness of the light source (at least one of the first light source 21 and the second light source 22) itself.

[0047] 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, etc. 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 second light source 22 (see FIG. 2).

[0048] At this time, the emergency lighting unit 6 passes a current to the second light source 22 that is the same as the current that flows due to the voltage supplied to the second light source 22 by the regular lighting unit 4 in the normal mode. As a result, the brightness of the second light source 22 in the normal mode is equal to the brightness of the second light source 22 in the emergency mode. In other words, the ratio of the brightness of the light source unit 2 (first light source 21 and second light source 22) when the operating mode is the normal mode to the brightness of the light source unit 2 when the operating mode is the emergency mode is 3:1. Note that the "brightness of the light source unit 2" refers to the combined brightness of the first light source 21 and the second light source 22. In other words, when the operating mode is the emergency mode, the control unit 8 causes the light source unit 2 to emit light at approximately 1 / 3 the brightness of the normal mode.

[0049] 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 stops the output of DC voltage between the first output terminal Cp1 and the second output terminal Cp2 while keeping the charging unit 5 operating and causing the constant lighting unit 4 to continue outputting DC current to the charging unit 5. As a result, the control unit 8 keeps the first light source 21 and the second light source 22 in an off state while causing the charging unit 5 to charge the secondary battery 3.

[0050] 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).

[0051] In the inspection mode, the control unit 8 stops the charging unit 5 while keeping the normal lighting unit 4 operating, controls the first switch SW1 to be off, and controls the second switch SW2 to be on. That is, in the inspection mode, charging of the secondary battery 3 is stopped. In this state, in the inspection mode, the control unit 8 controls the normal lighting unit 4 to turn on the first light source 21 for a predetermined time. At the same time, the control unit 8 controls the emergency lighting unit 6 to turn on the second light source 22 for a predetermined time. Note that in the inspection mode, the predetermined time for turning on the first light source 21 and the second light source 22 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.

[0052] Here, in the inspection mode, the service lighting unit 4 passes a current of the same value to the first light source 21 as when operating in the normal mode. As a result, the brightness of the first light source 21 in the inspection mode is equal to the brightness of the first light source 21 in the normal mode. Furthermore, in the inspection mode, the emergency lighting unit 6 passes a current of the same value to the second light source 22 as the current that the service lighting unit 4 passes to the second light source 22 when operating in the normal mode. As a result, the brightness of the second light source 22 in the inspection mode is equal to the brightness of the second light source 22 in the normal mode. In other words, the combined brightness of the first light source 21 and the second light source 22 when the operation mode of the control unit 8 is the inspection mode is equal to the combined brightness of the first light source 21 and the second light source 22 when the operation mode of the control unit 8 is the normal mode. In other words, the surface brightness of the panel A30 when the operation mode of the control unit 8 is the inspection mode is equal to the surface brightness of the panel A30 when the operation mode of the control unit 8 is the normal mode. This can further reduce the sense of discomfort felt by the user when inspecting the emergency power supply 3. Note that "equal" here is not limited to exact agreement, but also includes differences within an allowable error range. The allowable error is, for example, an error of 5% or less or an error of 10% or less.

[0053] As described above, the first light source 21 is configured by two sets of light-emitting units U1 connected in parallel, and the second light source 22 is configured by one set of light-emitting units U1. Therefore, the same load current flows through the two sets of light-emitting units U1 of the first light source 21 and the one set of light-emitting units U1 of the second light source 22. As a result, when the operation mode of the control unit 8 is in the inspection mode, the ratio of the brightness of the first light source 21 to the brightness of the second light source 22 is 2:1.

[0054] In the inspection mode, the control unit 8 monitors whether a predetermined current is flowing through the second light source 22, and compares the voltage of the secondary battery 3 after the second light source 22 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 second light source 22 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] (3) Variations The above-described embodiment is merely one of various embodiments of the present invention. Furthermore, the above-described embodiment 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-described embodiment are listed below.

[0059] In the above embodiment, the normal lighting unit 4 passes a current of the same value to the first light source 21 in the inspection mode as when operating in the normal mode, and the emergency lighting unit 6 passes a current of the same value to the second light source 22 in the inspection mode as the current that the normal lighting unit 4 passes to the second light source 22 when operating in the normal mode. That is, in the above embodiment, the combined brightness of the first light source 21 and the second light source 22 when the operating mode of the control unit 8 is the inspection mode is equal to the combined brightness of the first light source 21 and the second light source 22 when the operating mode of the control unit 8 is the normal mode. On the other hand, the normal lighting unit 4 may pass a current of a lower value to the first light source 21 in the inspection mode than when operating in the normal mode, and the emergency lighting unit 6 may pass a current of the same value to the second light source 22 in the inspection mode as the current that the normal lighting unit 4 passes to the second light source 22 when operating in the normal mode. As a result, the brightness of the first light source 21 in the inspection mode is dimmer than the brightness of the first light source 21 in the normal mode. Furthermore, the brightness of the second light source 22 in the inspection mode is equal to the brightness of the second light source 22 in the normal mode. Therefore, the combined brightness of the first light source 21 and the second light source 22 when the operation mode of the control unit 8 is in the inspection mode is brighter than the combined brightness of the first light source 21 and the second light source 22 when the operation mode is in the emergency mode, and is darker than the combined brightness of the first light source 21 and the second light source 22 when the operation mode is in the normal mode. Note that when the operation mode of the control unit 8 is in the emergency mode, the first light source 21 is turned off, and therefore the combined brightness of the first light source 21 and the second light source 22 when the operation mode is in the emergency mode is the brightness of the second light source 22. This makes it possible to reduce the power consumption of the first light source 21 within a range that does not cause discomfort to the user when inspecting the emergency power supply 3.

[0060] 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.

[0061] (4) Summary As described above, the lighting device (1) of the first aspect includes the first light source (21), the second light source (22), the emergency power supply (3), the normal lighting unit (4), the emergency lighting unit (6), and the control unit (8). The second light source (22) is connected to the first light source (21). The normal lighting unit (4) lights up the first light source (21) and the second light source (22) using normal power supplied from the normal power supply (PS1). The emergency lighting unit (6) lights up the second light source (22) 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 operating modes including a normal mode when the utility power supply (PS1) is supplying utility power, an emergency mode when the utility power supply (PS1) has stopped supplying utility power, and an inspection mode in which the emergency power supply (3) is inspected while the utility power supply (PS1) is supplying utility power. In the normal mode, the control unit (8) controls the utility lighting unit (4) to turn on the first light source (21) and the second light source (22). In the emergency mode, the control unit (8) controls the emergency lighting unit (6) to turn on the second light source (22). In the inspection mode, the control unit (8) controls the utility lighting unit (4) to turn on the first light source (21) and the emergency lighting unit (6) to turn on the second light source (22).

[0062] According to this aspect, the first light source (21) and the second light source (22) are turned on whether the operation mode of the control unit (8) is the normal mode or the inspection mode, so that it is possible to reduce the sense of discomfort felt by users, such as users of the facility where the lighting device (1) is installed, when inspecting the emergency power supply (3).

[0063] The lighting device (1) of the second aspect is the same as that of the first aspect, but further includes a first switch (SW1) and a second switch (SW2) whose on / off is controlled by the control unit (8). The first light source (21) has a first terminal (C1) and a second terminal (C2) to which normal power is supplied. The second light source (22) has a third terminal (C3) and a fourth terminal (C4) 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) and to the third terminal (C3) via the first switch (SW1). The second terminal (C2) is connected to a second output terminal (Cp2) on the low potential side of the normal lighting unit (4) and to the fourth terminal (C4). The third terminal (C3) 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 fourth terminal (C4) is connected to a fourth output terminal (Cp4) on the low potential side of the emergency lighting unit 6. In the normal mode, the control unit (8) controls the first switch (SW1) to be on and the second switch (SW2) to be off, and in the inspection mode, the control unit (8) controls the first switch (SW1) to be off and the second switch (SW2) to be on.

[0064] According to this aspect, the first light source (21) and the second light source (22) are turned on whether the operation mode of the control unit (8) is the normal mode or the inspection mode, thereby reducing the sense of discomfort felt by the user when inspecting the emergency power supply (3).

[0065] In the lighting device (1) of the third aspect, in the first or second aspect, the combined brightness of the first light source (21) and the second light source (22) when the operation mode of the control unit (8) is the inspection mode is equal to the combined brightness of the first light source (21) and the second light source (22) when the operation mode is the normal mode.

[0066] According to this aspect, it is possible to further reduce the sense of discomfort felt by the user when inspecting the emergency power supply (3).

[0067] In the lighting device (1) of the fourth aspect, in the first or second aspect, the combined brightness of the brightness of the first light source (21) and the brightness of the second light source (22) when the operation mode of the control unit (8) is the inspection mode is brighter than the brightness of the second light source (22) when the operation mode is the emergency mode, and is darker than the combined brightness of the brightness of the first light source (21) and the second light source (22) when the operation mode is the normal mode.

[0068] According to this aspect, when inspecting the emergency power supply (3), it is possible to reduce the power consumption of the first light source (21) to the extent that the user does not feel uncomfortable.

[0069] The lighting device (1) of a fifth aspect is the lighting device (1) of any one of the first to fourth 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 of the control unit (8) from a normal mode to an inspection mode.

[0070] 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.

[0071] In the lighting device (1) of a sixth aspect, in any of the first to fifth 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).

[0072] According to this embodiment, the emergency power supply (3) can be inspected periodically.

[0073] In the lighting device (1) of the seventh aspect, in the sixth aspect, the predetermined period is one year or less.

[0074] According to this embodiment, the emergency power supply (3) can be inspected periodically.

[0075] In the lighting device (1) of the eighth aspect, in any of the first to seventh aspects, the control unit (8) controls the normal lighting unit (4) to turn on the first light source (21) for a predetermined time, and controls the emergency lighting unit (6) to turn on the second light source (22) for a predetermined time, in the inspection mode.

[0076] According to this aspect, inspections required by law can be carried out automatically.

[0077] In the lighting device (1) of the ninth aspect, in the eighth aspect, the predetermined time is 60 minutes or less.

[0078] According to this aspect, inspections required by law can be carried out automatically.

[0079] In the lighting device (1) of the tenth aspect, in any of the first to ninth aspects, the ratio of the brightness of the first light source (21) to the brightness of the second light source (22) when the operation mode of the control unit (8) is the normal mode or the inspection mode is 2:1.

[0080] According to this embodiment, the brightness of the light source unit 2 when the operation mode of the control unit (8) is the normal mode or the inspection mode can be made brighter than the brightness of the light source unit 2 when the operation mode is the emergency mode.

[0081] 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.

[0082] According to this embodiment, the emergency power supply (3) can be charged and used repeatedly. [Explanation of symbols]

[0083] 1. Lighting equipment 3 Emergency power supply 4 Regular lighting section 6 Emergency lighting section 8 Control Unit 10 Control section 21 1st light source 22 Second light source C1 1st terminal C2 2nd terminal C3 3rd terminal C4 4th terminal Cp1 First output terminal Cp2 Second output terminal Cp3 3rd output terminal Cp4 4th output terminal PS1 regular power supply SW1 First switch SW2 Second switch

Claims

1. A first light source; a second light source connected to the first light source; Emergency power supply and a normal lighting unit that lights up the first light source and the second light source using normal power supplied from a normal power source; an emergency lighting unit that lights up the second 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 when the utility power supply is supplying the utility power, an emergency mode when the utility power supply has stopped supplying the utility power, and an inspection mode in which inspection of the emergency power supply is performed when the utility power supply is supplying the utility power, The control unit In the normal mode, the normal lighting unit is controlled to light up the first light source and the second light source, In the emergency mode, the emergency lighting unit is controlled to turn on the second light source, In the inspection mode, the normal lighting unit is controlled to turn on the first light source, and the emergency lighting unit is controlled to turn on the second light source. Lighting equipment.

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

3. The combined brightness of the brightness of the first light source and the brightness of the second light source when the operation mode is the inspection mode is equal to the combined brightness of the brightness of the first light source and the brightness of the second light source when the operation mode is the normal mode.

3. The lighting device according to claim 1 or 2.

4. a combined brightness of the brightness of the first light source and the brightness of the second light source when the operation mode is the inspection mode is brighter than a brightness of the second light source when the operation mode is the emergency mode, and is darker than a combined brightness of the brightness of the first light source and the brightness of the second light source when the operation mode is the normal mode; 3. The lighting device according to claim 1 or 2.

5. 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.

3. The lighting device according to claim 1 or 2.

6. 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.

3. The lighting device according to claim 1 or 2.

7. The predetermined period is one year or less.

7. The lighting device according to claim 6.

8. In the inspection mode, the control unit controls the normal lighting unit to turn on the first light source for a predetermined time, and controls the emergency lighting unit to turn on the second light source for the predetermined time.

3. The lighting device according to claim 1 or 2.

9. The predetermined time is 60 minutes or less.

9. The lighting device according to claim 8.

10. When the operation mode is the normal mode or the inspection mode, the ratio of the brightness of the first light source to the brightness of the second light source is 2:

1.

3. The lighting device according to claim 1 or 2.

11. The emergency power supply is a secondary battery.

3. The lighting device according to claim 1 or 2.

Images