JP6340988B2 - Lighting device with power failure compensation function, backup power supply device, and battery discharge control unit - Google Patents

Description

  The present invention relates to a lighting device with a power failure compensation function, a backup power supply device, and a battery discharge control unit.

  Patent document 1 discloses a battery projector. The battery projector includes an LED illumination lamp, an illumination control unit that controls lighting of the illumination lamp, an illumination battery that supplies power to the illumination lamp, and a remaining capacity display that detects and displays the remaining capacity of the illumination battery. Equipment. And the structure which changes the brightness of an illumination lamp periodically when the remaining capacity of the battery for illumination becomes below a predetermined threshold during lighting of an illumination lamp, makes a user notice bright / dark lighting, and stops the bright / dark lighting operation is disclosed. Is done.

  Patent Literature 2 discloses a battery built-in lighting fixture that turns on a fluorescent lamp with a battery during a power failure. In this battery built-in lighting fixture, the life of the battery is determined based on the battery voltage in the test operation, and when the battery has reached the end of life, the time for battery replacement has arrived for the user by blinking the light emitting diode for display. Indicates.

JP 2012-113888 A Japanese Patent No. 459196

  In the battery projector of Patent Document 1, the life of the battery is not considered. As the life of the battery progresses, the light projection time by the battery projector decreases. As the battery life progresses and the battery capacity decreases, the discharge rate of the battery voltage increases and the voltage rapidly decreases. By the way, there exists an emergency light lighting fixture which patent document 2 discloses as a lighting fixture by which battery lighting is performed. In an emergency light luminaire, when the battery is switched on in the event of a power failure, the lighting of the light source is continued for a time (for example, continuous 10 minutes, 20 minutes, 30 minutes, 60 minutes, etc.) determined by the standard. There is a need. In the battery built-in lighting fixture of the same document, although the battery life, that is, the arrival of the battery replacement time is indicated to the user, the battery procurement waiting time, the user's forgetfulness, etc., regardless of whether the battery replacement time has arrived If battery replacement is delayed, the specified emergency light lighting time (backup lighting time) will become shorter and there is a possibility that the function as an emergency light lighting device cannot be sufficiently obtained.

  Therefore, the present invention provides an illumination device with a power failure compensation function and a backup power supply device that can secure a backup lighting time by suppressing a rapid decrease in battery voltage even when the battery life of the backup power supply has progressed It is another object of the present invention to provide a battery discharge control unit.

  The backup power supply device for supplying power to the light source power supply device at the time of a power failure is a battery, a detection calculation unit for detecting a battery life progress degree, and outputting a dimming command based on the life progress degree, and a dimming command In response, the light source power supply device includes a dimming signal output unit that outputs a dimming signal for dimming the light source.

  According to the backup power supply device described above, even when the battery life has progressed during the backup lighting at the time of a power failure, the battery voltage is rapidly increased by suppressing the discharge of the battery by dimming the light source. It is possible to secure a backup lighting time by suppressing a significant decrease.

  Here, the detection calculation unit is configured to detect the charge rate or discharge rate of the battery as the life progression degree, and when the charge rate or discharge rate exceeds a predetermined value, the dimming signal output unit outputs the dimming signal. The As a result, it is possible to accurately determine the battery capacity drop, that is, the progress of life.

  In addition, the detection calculation unit may detect the cumulative usage time of the battery as the life progress degree, and the dimming signal output unit may output the dimming signal when the cumulative usage time exceeds a predetermined value. Thereby, it is possible to determine the progress of the battery life with a relatively simple configuration.

  In addition, the detection calculation unit detects the cumulative number of charging or discharging times of the battery as the life progress degree, and the dimming signal output unit outputs the dimming signal when the cumulative charging number or the cumulative discharging number exceeds a predetermined value You may do it. This also makes it possible to determine the progress of the battery life with a relatively simple configuration.

  Furthermore, the dimming signal output unit may be configured to output a dimming signal having a deep dimming degree as the life progress degree increases. Thereby, since the discharge of the battery can be further suppressed as the remaining capacity of the battery decreases, it is possible to further extend the life of the battery and further secure the backup lighting time.

  The lighting device with a power failure compensation function according to the present invention includes any one of the backup power supply devices described above and a light source power supply device that is supplied with power from a commercial power source when there is no power failure and is supplied based on the charge of the battery during a power failure. The power source device for the light source includes a conversion unit that converts the supplied electric power into an output current and supplies the converted light to the light source, and a control unit that controls the conversion unit to reduce the output current according to the dimming signal at the time of a power failure.

  According to the lighting device with power outage compensation function described above, it is possible to reliably obtain lighting over a predetermined time in the event of a power outage even when the battery life of the backup power supply device has progressed during the backup lighting in the event of a power outage. Can do.

  Here, the light source is preferably an LED, and the light source power supply device is preferably an LED power supply device. Thereby, the versatility of the illuminating device with a power failure compensation function is enhanced. Moreover, the light control start at the time of starting the dimming lighting by backup lighting is implement | achieved. That is, it is possible to realize desired dimming lighting immediately after switching to backup lighting, instead of once dimming after starting all light. Therefore, when the dimming lighting is started by the backup power supply device after the LED is turned off for a moment when the commercial power supply is stopped, a smooth lighting start operation is performed, and the visual discomfort for the user is suppressed.

  The battery discharge control unit of the present invention is connected to a lighting device with a power failure compensation function including a power source device for a light source that is fed from a commercial power source during a non-power failure and a backup power source device that feeds the power source device for a light source during a power failure. Detecting the life progress of the battery included in the device, outputting a dimming command based on the life progress, and a light source power supply device for dimming the light source in response to the dimming command A dimming signal output unit for outputting a dimming signal. Here, the detection calculation unit and the dimming signal output unit may be the same as those described above regarding the backup power supply device.

  The battery discharge control unit can be added to existing backup power supply devices or lighting devices with a power failure compensation function via a small number of wires, and contributes to the expansion of the introduction range and the reduction of the introduction cost of the present invention.

It is a block diagram which shows an example of the illuminating device with a power failure compensation function by the 1st Embodiment of this invention. It is a figure which shows an example of the step-up circuit in the backup power supply device of this invention. It is a figure which shows the other example of the booster circuit in the backup power supply device of this invention. It is a block diagram which shows the illuminating device with a power failure compensation function by the 2nd Embodiment of this invention. It is a block diagram which shows the illuminating device with a power failure compensation function by the 3rd Embodiment of this invention. It is a block diagram explaining the battery discharge control unit by the 4th Embodiment of this invention.

First embodiment.
FIG. 1 shows a block diagram of a lighting device 1 with a power failure compensation function (hereinafter referred to as “lighting device 1”) according to a first embodiment of the present invention. In the present embodiment, as the lighting device 1, an LED lighting device with a power failure compensation function that is used, for example, as an emergency lighting device is shown. The lighting device 1 includes a backup power supply device 2 (hereinafter referred to as “backup power supply 2”), an LED power supply device 3 (hereinafter referred to as “LED power supply 3”), and an LED 4. The backup power source 2 is powered from the commercial power source AC. The LED power supply 3 is fed from the commercial power supply AC during a non-power failure (that is, during normal use, the same applies hereinafter), and fed from the backup power supply device 2 during a power failure. . For the sake of clarity, the LED 4 is illustrated as a single LED, but it is assumed that a plurality of LEDs are connected in series or in series as the LED 4.

  The backup power source 2 includes a battery 21, a battery charging circuit 22, a charge / discharge switching unit 23, a power supply switching unit 24, a power failure detection unit 25, a control circuit 26, a booster circuit 27, a detection calculation unit 28, and a dimming signal output unit 29. . The battery 21 is a power storage means, and the charging voltage of the battery 21 is generally about 12 to 20 V at the time of full charge, but can be changed according to the type of the battery to be used, and is not limited to the above voltage. .

  The battery charging circuit 22 is composed of an AC / DC step-down converter, and charges the battery 21 by converting the AC voltage from the commercial power source AC into DC. The input of the battery charging circuit 22 is connected to the commercial power source AC, and the output is connected to the battery 21 via the charge / discharge switching unit 23. The battery charging circuit 22 may be a switching power supply circuit including a full-wave rectifier and a flyback converter, or may be a switching power supply circuit including a full-wave rectifier, a step-up chopper circuit, and a step-down chopper circuit.

  The charge / discharge switching unit 23, the power supply switching unit 24, the power failure detection unit 25, and the control circuit 26 control the connection relationship between the commercial power source AC, the backup power source 2, and the LED power source 3 according to the presence or absence of a power failure.

  The charge / discharge switching unit 23 includes a pair of switches 231 and 232, the switch 231 is connected to the positive electrode of the battery 21, the switch 232 is connected to the negative electrode of the battery 21, and the connection is switched between the contact A and the contact B, respectively. It is done. When the connection is at the contact A, the battery 21 is connected to the output terminal of the battery charging circuit 22 and disconnected from the booster circuit 27. When the connection is at the contact B, the battery 21 is connected to the input terminal of the booster circuit 27. And disconnected from the battery charging circuit 22.

  The power supply switching unit 24 has a pair of switches 241 and 242, and is connected to the input end of the LED power supply 3, and the connection is switched between the contact A and the contact B. When the connection is at the contact A, the input end of the LED power supply 3 is connected to the commercial power supply AC and disconnected from the booster circuit 27. When the connection is at the contact B, the input end of the LED power supply 3 is connected to the booster circuit 27. And disconnected from the commercial power supply AC. That is, the LED power source 3 is selectively connected to the commercial power source AC and the backup power source 2.

  The power failure detection unit 25 detects a power failure state in the commercial power source AC. For example, the power failure detection unit 25 may be configured to detect a voltage between input lines and output a drive signal when the voltage is equal to or higher than a predetermined value and to output nothing when the voltage is lower than the predetermined value.

  The control circuit 26 switches all the switch connections of the charge / discharge switching unit 23 and the power supply switching unit 24 to the contact A or the contact B at the same time according to the power failure state detected by the power failure detection unit 25. When a drive signal is input from the power failure detection unit 25 (that is, when there is no power failure), the control circuit 26 connects all the switches 231, 232, 241 and 242 to the contact A. On the other hand, when the drive signal is not input (that is, during a power failure), the control circuit 26 connects all the switches 231, 232, 241, and 242 to the contact B.

  In other words, when the commercial power source AC is not in a power failure (contact A state), the output terminal of the battery charging circuit 22 is connected to the battery 21 and the commercial power source AC is connected to the input terminal of the LED power source 3. In this connected state, the battery 21 and the booster circuit 27, and the booster circuit 27 and the LED power source 3 are cut off. On the other hand, the battery 21 is connected to the input terminal of the LED power source 3 via the booster circuit 27 at the time of a power failure of the commercial power source AC (the state of the contact B). In this connected state, the output terminal of the battery charging circuit 22 and the battery 21, and the commercial power source AC and the LED power source 3 are cut off.

  In the state of the contact B, the booster circuit 27 boosts the input voltage from the battery 21 and supplies it to the LED power supply 3. Note that the booster circuit 27 may be a DC / DC boost converter that outputs a DC voltage, or a DC / AC boost converter that outputs a rectangular wave voltage.

  FIG. 2A shows an example of a circuit configuration when the booster circuit 27 is a DC / DC boost converter. The booster circuit 27 includes a transformer 271, a transistor 272, a diode 273, a capacitor 274, and a driver circuit 275, and constitutes a flyback converter. The high potential side input terminal is connected to the contact B of the switch 231, the low potential side input terminal (reference potential) is connected to the contact B of the switch 232, and the high potential side output terminal is connected to the contact B of the switch 241 (or 242). The low potential side output terminal is connected to the contact B of the switch 242 (or 241). The driver circuit 275 PWM-drives the transistor 272 with a predetermined ON width. Energy is stored in the transformer 271 during the on period of the transistor 272, and the energy is charged to the capacitor 274 via the diode 273 during the off period of the transistor 272. As a result, a DC voltage is output from the booster circuit 27. It is assumed that the driver circuit 275 operates by supplying power from the battery 21. In addition to the flyback converter, for example, a step-up chopper circuit or the like may be employed as the DC / DC converter.

  FIG. 2B illustrates a circuit diagram when the booster circuit 27 is a DC / AC boost converter. The step-up circuit 27 includes a full bridge circuit including transistors 276a to 276d, a driver circuit 278, and a step-up transformer 279. The high potential input terminal of the full bridge circuit is connected to the contact B of the switch 231, the low potential input terminal is connected to the contact B of the switch 232, and the AC output terminal of the step-up transformer 279 is the contact B of the switch 241 and the switch 242, respectively. Connected to contact B. The pair of transistors 276a and 276d and the pair of transistors 276b and 276c are alternately turned on and off by the driver circuit 278, and the direct current voltage of the battery 21 is converted into an alternating current. The alternating current voltage is boosted by the step-up transformer 279. As a result, a rectangular wave voltage is output from the booster circuit 27. It is assumed that the driver circuit 278 operates by power supply from the battery 21.

  Returning to FIG. 1, the detection calculation unit 28 includes a voltage detection unit 281 and a calculation unit 285, detects the life progress of the battery 21, and outputs a dimming command based on the life progress. The voltage detection unit 281 detects the voltage across the battery 21, and the calculation unit 285 calculates the change rate of the detected voltage, and determines that the battery 21 has reached the end of its life when the change rate exceeds a predetermined value. More specifically, the calculation unit 285 calculates the rising speed based on the initial value and the change width of the detected voltage when the battery 21 is charged, and the capacity of the battery 21 decreases when the rising speed exceeds a predetermined value. That is, the lifetime can be specified. Further, the calculation unit 285 calculates a decrease rate based on the initial value and change width of the detected voltage when the battery 21 is discharged, and the capacity of the battery 21 decreases when the absolute value of the decrease rate exceeds a predetermined value, that is, The lifetime can be specified. Note that the battery 21 reaching the end of its life means that the remaining capacity of the battery 21 has reached 60% of the initial capacity, and each of the predetermined values is set based on the capacity of 60% of the initial capacity. It is assumed that The arithmetic unit 285 outputs a dimming command when it is determined that the battery 21 has reached the end of its life.

  The detection and determination processing described above may be performed when the lighting device 1 is used, or may be performed when the lighting device 1 is not used. When performing the detection and determination process at the time of use, the process detects the progress of life or the arrival of the life in advance in preparation for the next discharge (that is, the target discharge operation) in the most recent charging operation or discharging operation of the battery 21. Anything that can be determined is acceptable. When the detection and determination processing is performed when not in use, the processing may be performed as long as the battery 21 is charged or discharged on a trial basis when the lighting device 1 is not used to detect and determine the life progress or the end of life. .

  The dimming signal output unit 29 receives the dimming command from the calculation unit 285 and generates the dimming signal d1. The dimming degree specified by the dimming signal d1 is a dimming degree that can maintain the lighting of the LED 4 over a specified backup lighting time (for example, 10 minutes) even when the remaining capacity of the battery 21 is 60% or less. It shall be. The ground (reference potential) of the detection calculation unit 28 and the dimming signal output unit 29 may be the same as the reference potential of the backup power supply 2 (for example, the negative potential of the battery 21). The dimming signal d1 may be converted into a reference potential by a photocoupler or the like in the control unit 32 of the LED power source 3 to be described later. Specifically, the dimming signal d1 may be converted into a signal based on the ground of the control unit 32 (in this example, the primary side ground of the flyback converter as shown in FIG. 1).

  The LED power source 3 includes a conversion unit 31 and a control unit 32. As an outline, the conversion unit 31 converts the power supplied from the power supply switching unit 24 into a direct current LED current and supplies it to the LED 4, and the control unit 32 reduces the LED current according to the dimming signal d1 during a power failure. The converter 31 is controlled. The LED power source 3 is supplied with power from the commercial power source AC when there is no power failure, and is supplied based on the charge of the battery 21 of the backup power source 2 when there is a power failure.

  The conversion unit 31 includes a full-wave rectifier 311, an input capacitor 312, a transformer 313, a switching element 314 such as a MOSFET, a diode 315, and an output capacitor 316. The input capacitor 312, the transformer 313, the switching element 314, the diode 315, and the output capacitor 316 constitute a DC / DC converter (in this example, a step-down converter). As shown in FIG. 1, in the present embodiment, a configuration in which the conversion unit 31 includes an insulating flyback converter is illustrated.

  The full wave rectifier 311 is composed of a diode bridge, and full wave rectifies the input voltage. Therefore, the full-wave rectifier 311 outputs a full-wave rectified pulsating voltage of 100 Hz or 120 Hz when the input voltage is a commercial power supply voltage of 50 Hz or 60 Hz. On the other hand, full-wave rectifier 311 outputs a DC voltage when the input voltage is a DC voltage or a rectangular wave voltage from backup power supply 2. If necessary, a noise filter, a current fuse, or the like is connected in front of the diode bridge. Energy is accumulated by the primary winding of the transformer 313 during the ON period of the switching element 314, and the energy is output from the secondary winding side via the diode 315 during the OFF period of the switching element 314. The output current is determined by the ON duty (ON width) of the switching element 314, and the ON width is determined by the control unit 32. That is, the switching element 314 is PWM controlled by the control unit 32. Thereby, the limited LED current is supplied to the LED 4 from the output voltage of the full-wave rectifier 311.

  The control unit 32 includes, for example, a microcomputer, and controls the ON width (ON duty) in the PWM control of the switching element 314 according to the dimming degree indicated by the input dimming signal. In the control unit 32, it is assumed that the ON width of the PWM control is reduced with respect to the deep (dark) dimming degree, and the LED current is reduced.

  Here, the control unit 32 may be configured to receive the dimming signal d0 from the dimmer D outside the lighting device 1 and perform dimming lighting based on the dimming signal d0 when there is no power failure. Regarding the selection of the dimming signal d0 from the dimmer D and the dimming signal d1 from the dimming signal output unit 29, the control unit 32 adopts the dimming signal d0 when there is no power failure, and the dimming signal d1 when there is a power failure. Configured to adopt. In other words, regardless of the presence or absence of the dimmer D, the control unit 32 performs all-light lighting or dimming lighting based on the dimming signal d1 during a power failure.

  Regarding the selection of the dimming signal, for example, the dimming signal d1 is output from the dimming signal output unit 29 only during a power failure, and the dimming signal d1 has priority over the dimming signal d0 in the control unit 32. It is good also as a structure selected by these. More specifically, information s (see the dotted line s in FIG. 1) of the connection state of each switch of the charge / discharge switching unit 23 and the power supply switching unit 24 is transmitted from the control circuit 26 to the dimming signal output unit 29. To do. The dimming signal output unit 29 does not output the dimming signal d1 when the information s indicates the connection of the contact A, and outputs the dimming signal d1 when the information s indicates the connection of the contact B. What should I do?

  Alternatively, the control unit 32 determines whether the regular lighting or the backup lighting is performed based on the input voltage waveform to the LED power source 3, and selects the dimming signal d0 or d1 according to the determination result. You may make it perform. The control unit 32 employs the dimming signal d0 when it is determined that the regular lighting is performed, and employs the dimming signal d1 when it is determined that the backup lighting is performed. More specifically, the rectified voltage v (see the dotted line v in FIG. 1) of the full-wave rectifier 311 is input to the control unit 32 (via a resistor or the like (not shown)). Based on the waveform of v, it may be determined whether power is supplied from the commercial power supply AC or the backup power supply 2.

  As described above, when the commercial power supply AC is input to the full-wave rectifier 311, the rectified voltage v becomes a full-wave rectified pulsating waveform of 100 Hz or 120 Hz, and the full-wave rectifier 311 has a DC voltage from the backup power supply 2 or When a rectangular wave voltage is input, the rectified voltage v has a direct current waveform. Accordingly, the control unit 32 identifies the difference between the waveforms of the two to determine whether the power is supplied from the voltage of the commercial power source AC or the output voltage of the backup power source 2, that is, whether the regular lighting or the backup lighting is performed. Can be determined. Thus, even when both the dimming signal d0 from the dimmer D and the dimming signal d1 from the dimming signal output unit 29 are input, the dimming signal d0 is adopted at the time of regular lighting, and backup The dimming signal d1 is adopted at the time of lighting.

  As described above, in the lighting device 1 of the present embodiment, when there is no power failure (during regular lighting), all-light lighting or (when the dimmer D is connected) based on the power of the commercial power supply AC. ) Dimming lighting according to the dimming signal d0 from the dimmer D is performed. On the other hand, during a power failure (when the backup is lit), all-light lighting or dimming lighting (dimming lighting) according to the dimming signal d1 from the dimming signal output unit 29 is performed based on the charge of the battery 21. . Then, dimming lighting according to the dimming signal d1 is performed when a decrease in the battery capacity, that is, the arrival of the battery life is detected and determined by the battery voltage detection of the detection calculation unit 28.

  As described above, the backup power source 2 according to the present embodiment detects the life progress of the battery 21 and outputs the dimming command based on the life progress, and receives the dimming command, The power source 3 includes a dimming signal output unit 29 that outputs a dimming signal d1 for dimming the LED 4. Thereby, even if it is a case where the lifetime of the battery 21 comes and the capacity | capacitance falls, LED4 will be light-lit and the discharge of the battery 21 will be suppressed. Therefore, even when the life of the battery 21 has progressed, a rapid decrease in the battery voltage is suppressed, and the backup lighting time is ensured. Furthermore, since the life of the battery 21 is extended, the replacement cycle of the battery 21 becomes longer, which is advantageous for maintenance management. Then, the backup power source 2 is combined with the LED power source 3 having the conversion unit 31 and the control unit 32 configured to reduce the LED current according to the dimming signal d1 at the time of a power failure. A lighting device is obtained.

  Moreover, the detection calculating part 28 detects the charging speed or discharging speed of the battery 21 as a lifetime progress degree of the battery 21, and when the charging speed or discharging speed exceeds a predetermined value, the dimming signal d1 is output. Thereby, it is possible to accurately determine the capacity reduction of the battery 21, that is, the progress of the life.

Second embodiment.
In the first embodiment, the configuration for determining the life of the battery 21 based on the detection of the battery voltage is shown. However, in the present embodiment, the configuration for determining the life of the battery 21 based on the accumulated usage time of the battery 21. Indicates. FIG. 3 is a block diagram of the lighting device 1 according to the present embodiment. The illumination apparatus 1 according to the first embodiment is different from the illumination apparatus 1 only in the detection calculation unit 28 and its surrounding wiring, and is otherwise substantially the same, and thus detailed description thereof is omitted.

  The detection calculation unit 28 includes an integration timer 282 and a calculation unit 285. The integration timer 282 measures the accumulated usage time of the battery 21. The integration timer 282 is connected to any location in the backup power source 2 by a wiring (not shown), and starts counting, for example, when the backup power source 2 is first fed from the commercial power source AC. When the battery 21 is started to be used, the battery 21 is repeatedly discharged and charged (including charge retention) thereafter.

  Here, the cumulative use time may be a time including all of discharge and charge (that is, a simple elapsed time from the start of use) or a charge-only cumulative time (ie, a cumulative charge time). Alternatively, it may be a cumulative time only for discharge (that is, a cumulative discharge time). Regarding the cumulative charge time, the charge / discharge switching unit 23 and the power supply switching unit 24 may measure the cumulative time that each switch is connected to the contact A side. For the cumulative discharge time, each switch is connected to the contact B side. It is only necessary to measure the accumulated time connected to. In this case, the integration timer 282 may acquire information regarding the connection state of each switch from the control circuit 26 via a wiring (not shown). The arithmetic unit 285 compares the accumulated usage time measured by the integration timer 282 with a predetermined value, and outputs a dimming command when the accumulated usage time exceeds the predetermined value. The dimming signal output unit 29 receives the dimming command from the calculation unit 285 and outputs the dimming signal d1.

  As described above, also in the lighting device 1 of the present embodiment, all-light lighting or dimming lighting according to the dimming signal d0 is performed based on the power of the commercial power supply AC when there is no power failure, while the battery 21 Based on the charge, all-light lighting or dimming lighting (dimming lighting) according to the dimming signal d1 is performed. Then, dimming lighting according to the dimming signal d1 is performed when a decrease in the battery capacity by a predetermined amount, that is, the arrival of the battery life is detected and determined by measuring the accumulated use time of the detection calculation unit 28.

  According to the present embodiment, as in the first embodiment, even when the life of the battery 21 has progressed, a rapid decrease in the battery voltage is suppressed, and the backup lighting time is ensured. Further, the detection calculation unit 28 detects the accumulated usage time of the battery 21 as the life progression degree of the battery 21, and the dimming signal d1 is output when the accumulated usage time exceeds a predetermined value. Thereby, it is possible to determine the progress of the battery life with a relatively simple configuration.

Third embodiment.
In the second embodiment, the configuration in which the life of the battery 21 is determined based on the accumulated use time is shown. However, in the present embodiment, the life of the battery 21 is determined based on the accumulated charge count or accumulated discharge count. The configuration is shown. In FIG. 4, the block diagram of the illuminating device 1 by this embodiment is shown. The illumination apparatus 1 according to the first and second embodiments is different from the illumination apparatus 1 only in the detection calculation unit 28 and its surrounding wiring, and is otherwise substantially the same, and thus detailed description thereof is omitted.

  The detection calculation unit 28 includes a counter 283 and a calculation unit 285. The counter 283 counts the cumulative charge count or cumulative discharge count of the battery 21. As for the cumulative number of charging times, the charging / discharging switching unit 23 and the power source switching unit 24 may count the cumulative number of times each switch is connected to the contact A side. It is only necessary to count the cumulative number of connections. The counter 283 acquires information s regarding the connection state of each switch from the control circuit 26. The arithmetic unit 285 compares the cumulative charge count or cumulative discharge count counted by the counter 283 with a predetermined value, and outputs a dimming command when the cumulative charge count or cumulative discharge count exceeds the predetermined value. The dimming signal output unit 29 receives the dimming command from the calculation unit 285 and outputs the dimming signal d1.

  As described above, also in the lighting device 1 of the present embodiment, all-light lighting or dimming lighting according to the dimming signal d0 is performed based on the power of the commercial power supply AC when there is no power failure, while the battery 21 Based on the charge, all-light lighting or dimming lighting (dimming lighting) according to the dimming signal d1 is performed. The dimming lighting according to the dimming signal d1 is performed when a decrease in the battery capacity by a predetermined amount, that is, the arrival of the battery life is detected and determined by the cumulative charge / discharge count of the detection calculation unit 28. .

  As described above, according to the present embodiment, as in the first and second embodiments, even when the life of the battery 21 has progressed, a rapid decrease in the battery voltage is suppressed, and the backup lighting time is ensured. . Then, the detection calculation unit 28 detects the cumulative charge count or cumulative discharge count of the battery 21 as the life progression degree of the battery 21, and the dimming signal d1 is output when the cumulative charge count or cumulative discharge count exceeds a predetermined value. The Thereby, it is possible to determine the progress of the battery life with a relatively simple configuration.

Fourth embodiment.
In each of the above embodiments, the detection calculation unit 28 and the dimming signal output unit 29 are shown to be included in the backup power supply 2. However, in the present embodiment, the detection calculation unit 28 and the dimming signal output unit 29 are externally attached. The example comprised independently as a battery discharge control unit for a motor is shown. In FIG. 5, the block diagram of the illuminating device 1 containing the battery discharge control unit 5 by this embodiment is shown. The illumination device 1 according to the first, second, and third embodiments is different from the illumination calculation unit 28, the dimming signal output unit 29, and the surrounding wiring, and is otherwise substantially the same. Detailed description is omitted.

  As shown in FIG. 5, the detection calculation unit 28 and the dimming signal output unit 29 are configured as the battery discharge control unit 5 independently from the backup power source 2. The internal configuration of the detection calculation unit 28 may be the same as that of each embodiment described above. When the detection calculation unit 28 includes the voltage detection unit 281 as in the first embodiment, the detection calculation unit 28 is connected to both ends of the battery 21 via the wiring w. When the detection calculation unit 28 includes the integration timer 282 as in the second embodiment, the detection calculation unit 28 is connected to any location (for example, the control circuit 26) of the backup power supply 2 via the wiring w. The As in the third embodiment, when the detection calculation unit 28 includes the counter 283, the detection calculation unit 28 is connected to the control circuit 26 via the wiring w. The wiring w may include necessary connection lines other than the above.

  As described above, according to the present embodiment, as in the first to third embodiments, even when the life of the battery 21 has progressed, a rapid decrease in the battery voltage is suppressed, and the backup lighting time is ensured. . And since the battery discharge control unit 5 of this embodiment can be connected to the existing backup power supply 2 and LED power supply 3 with few wiring, it contributes to the expansion of the introduction range of this invention, and the reduction of introduction cost.

Modified example.
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described configuration, and various modifications can be made.

(1) Modification of relationship between battery life and dimming degree In each of the above embodiments, the dimming signal d1 is output when the battery 21 reaches the end of its life. Accordingly, the dimming degree specified by the dimming signal d1 (or the dimming degree indicated by the dimming command) may be deepened. That is, as the remaining capacity (%) of the battery 21 is smaller, the dimming signal d1 has a deeper dimming degree. Thereby, the illumination intensity of LED4 falls (darkens) as the lifetime of the battery 21 progresses. In other words, the calculation unit 285 calculates the remaining battery capacity, calculates the dimming degree at which the remaining battery capacity can be lit for a specified backup lighting time (for example, 10 minutes), and reflects it in the dimming signal d1. It may be.

  As described above, according to the configuration in which the discharge is suppressed as the remaining capacity of the battery 21 decreases, it is possible to further extend the life of the battery 21 and further secure the battery lighting time. In this case, the dimming level of the dimming signal d1 may be set to decrease stepwise with respect to the detected battery life progress degree, or may be set to decrease continuously. The dimming signal d1 may be output after the capacity of the battery 21 reaches 60% of the initial capacity, or the dimming signal d1 is output before the capacity of the battery 21 reaches 60% of the initial capacity. You may make it do.

(2) Combination of detection results in each embodiment As each of the above embodiments, the configuration of the detection calculation unit 28 is individually shown, but these may be applied in appropriate combination. For example, the detection calculation unit 28 may include two or more of the voltage detection unit 281, the integration timer 282, and the counter 283, and the calculation unit 285 may perform a logical product or a logical sum of the respective detection results. According to the configuration that takes the logical product, erroneous detection is reliably prevented, and the dimming command and the dimming signal d1 are output at a more accurate timing. Further, according to the configuration that takes the logical sum, the dimming command and the dimming signal d1 are output at an earlier timing, which contributes to the extension of the life of the battery 21.

(3) Change of light source In each of the above embodiments, focusing on LED lighting with high versatility, the case where the LED 4 constitutes a light source and the LED power source 3 constitutes an illumination power supply device has been described. The present invention is also applicable to other light sources and lighting power supply devices for lighting them. The light source may be, for example, a discharge lamp such as a fluorescent lamp, or a semiconductor element such as an organic EL. In this case, the illumination power supply device only needs to be configured by an appropriate circuit corresponding to each light source. For example, when the light source is a fluorescent lamp, the conversion unit 31 may have a general circuit configuration including, for example, a power factor correction circuit (step-up converter) and a half-bridge circuit. The fluorescent lamp is dimmed by increasing the drive frequency of the bridge circuit. However, when the dimming fluorescent lamp is restarted and dimmed when the battery is turned on, it will be dimmed after it is turned on once close to all light after turning off (that is, after starting performance is secured). There is a need to. On the other hand, when the dimmed LED is restarted and dimmed when the battery is turned on, the dimmed light can be turned on immediately after the light is turned off, allowing a smooth transition to dimmed lighting. Visual discomfort in the user is suppressed.

(4) Modification of Conversion Unit 31 In each of the above embodiments, the conversion unit 31 includes an insulating flyback converter. However, the conversion unit 31 includes a DC / DC converter of another form. For example, a configuration including a power factor correction circuit (a step-up chopper circuit) and a step-down chopper circuit may be employed.

1 LED lighting device with power failure compensation function (lighting device with power failure compensation function)
2 Backup power supply 3 LED power supply (lighting power supply)
4 LED (light source)
5 Battery Discharge Control Unit 21 Battery 28 Detection Calculation Unit 29 Dimming Signal Output Unit 31 Conversion Unit 32 Control Unit 281 Voltage Detection Unit 282 Integration Timer 283 Counter 285 Calculation Unit

Claims (5)

A battery-discharge control unit connected to the power failure compensation function illumination apparatus provided with a backup power supply to power the power supply for the light source at the time of power supply and power failure light source is powered from a commercial power source during non-power failure,
A detection calculation unit that detects a life progress of a battery included in the backup power supply and outputs a dimming command based on the life progress;
A battery discharge control unit comprising a dimming signal output unit for receiving a dimming command and outputting a dimming signal for dimming the light source to the power source device for the light source fed from the battery in the event of a power failure . 2. The battery discharge control unit according to claim 1 , wherein the detection calculation unit detects a charge rate or a discharge rate of the battery as the life progress degree, and the adjustment is performed when the charge rate or the discharge rate exceeds a predetermined value. A battery discharge control unit configured such that an optical signal output unit outputs the dimming signal. 2. The battery discharge control unit according to claim 1 , wherein the detection calculation unit detects an accumulated use time of the battery as the life progress degree, and the dimming signal output unit when the accumulated use time exceeds a predetermined value. A battery discharge control unit configured to output the dimming signal. 2. The battery discharge control unit according to claim 1 , wherein the detection calculation unit detects a cumulative charge number or a cumulative discharge number of the battery as the life progress degree, and the cumulative charge number or the cumulative discharge number exceeds a predetermined value. A battery discharge control unit configured so that the dimming signal output unit outputs the dimming signal. 5. The battery discharge control unit according to claim 1 , wherein the dimming signal output unit is configured to output the dimming signal having a deep dimming degree as the life progress degree increases. Battery discharge control unit.

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