JP4013166B2 - Emergency lighting system - Google Patents

Description

  The present invention relates to emergency lighting devices such as guide lights and emergency lights.

  The emergency lighting device turns on the lamp (emergency lighting) for the purpose of securing lighting in the event of a power failure due to a fire or the like, and is lit with the power of a battery power source that is always available. For this reason, battery inspection is required by the Fire and Disaster Management Agency Notification and Building Standard Law.

An example of a conventional guide light will be described below.
FIG. 16 is an external view of a conventional guide light, where (a) is a front view, (b) is a plan view, and (c) is a side view. In the figure, 1 is a main body, 2 is a display panel, 3 is an inspection switch pulling wheel, 4 is a battery monitor made of LEDs, 5 is a power cord through hole, and 6 and 7 are main body mounting holes.
FIG. 17 is a diagram showing the internal structure of this guide light. 8 is an inspection switch, 9 is a battery, 10 is a lamp, 11 is a terminal block, and 12 is a lighting device.
FIG. 18 is a circuit configuration diagram of the lighting device 12, in which 13 is a power supply circuit, 14 is a charging circuit, 15 is a control circuit, 16 is a diode OR circuit, 17 is a DC-DC converter circuit, and 18 is an inverter circuit.

  Referring to FIG. 18, a commercial power supply is connected to the terminal block 11, and the commercial power supply is input to the IN terminal of the power supply circuit 13. The power supply circuit 13 converts the AC voltage of the commercial power supply into a low DC voltage and outputs it from the OUT terminal. The charging circuit 14 including a trickle charging circuit or the like supplies a current for trickle charging the battery 9 with a DC voltage from the power supply circuit 13. The control circuit 15 is connected to the battery monitor 4 and the inspection switch 8, and the control circuit 15 outputs a control signal for turning on / off the operation of the power supply circuit 13 and a control signal for turning on / off the operation of the inverter circuit 18. . The battery monitor 4 is composed of, for example, an LED (light emitting diode) that emits two colors of red and green, and emits green light during charging, and emits red light when abnormal. The diode OR circuit 16 transmits a DC output from the power supply circuit 13 to the DC-DC converter circuit 17 during normal lighting and a DC voltage from the battery 9 during emergency lighting such as a power failure or inspection. The DC-DC converter circuit 17 stabilizes and outputs the transmitted DC voltage. The inverter circuit 18 inputs the DC voltage of the DC-DC converter circuit 17, converts it to a high-voltage AC voltage, and outputs it. The cold cathode discharge lamp 10 is connected to the output of the inverter circuit 18, and the lamp 10 is lit (ordinary lighting) by discharging at a high voltage output from the inverter circuit 18.

  When the power supply to the terminal block 11 is interrupted, that is, when a power failure occurs, the output voltage of the power supply circuit 13 becomes 0 V, and the diode OR circuit 16 supplies the voltage of the battery 9 to the DC-DC converter circuit 17. The DC-DC converter circuit 17 stabilizes and boosts the voltage from the battery 9 and inputs it to the inverter circuit 18. Therefore, power for turning on the lamp 10 during a power failure is supplied from the battery 9.

  The battery check is an operation for checking whether or not the battery 9 operates normally. The inspector pulls the pulling wheel 3 and operates the check switch 8. When the inspection switch 8 is turned ON, the control circuit 15 sends an OFF signal to the ON / OFF terminal of the power supply circuit 13 to stop the operation of the power supply circuit 13. If the operation of the power supply circuit 13 is stopped, the operation is similar to that of a power failure, and the lamp 10 is lit by the power from the battery 9. At this time, the control circuit 15 monitors the voltage of the battery 9, and if the voltage of the battery 9 falls below a specified value, the control circuit 15 sends an OFF signal to the ON / OFF terminal of the inverter circuit 18 and stops the inverter circuit 18. . When the inverter circuit 18 stops, the lamp 10 is turned off.

The battery check by convention requires that the lamp must be effectively lit for 20 or 60 minutes for a guide light and 30 minutes for an emergency light. Since it must be lit for such a long time, the inspector hangs a weight on the pulling wheel 3 and confirms whether or not the specified inspection time lamp 10 is effectively lit by a means such as battery voltage measurement. .
If the battery is at the end of its life, the battery voltage drops rapidly within this inspection time, and the lamp is turned off, so it is possible to confirm whether or not the battery needs to be replaced. When the specified inspection time is over, the inspector removes the weight from the pulling wheel 3, so that the inspection switch 8 is turned OFF, and the control circuit 15 sends an ON signal to the ON / OFF terminal of the power supply circuit 13 to supply the power supply circuit. 13 is stopped. When the power supply circuit 13 is restored, the normal state is restored, and the lamp 10 is lit by the power from the commercial power supply.

  Japanese Patent Application Laid-Open No. 58-164190 is available as a countermeasure when a power failure or the like occurs immediately after the battery check is completed. This emergency lighting device includes a trickle charging circuit as a battery charging means and a quick charging circuit having a means for measuring the number of times of rapid charging, and when the battery terminal voltage after a predetermined battery discharge time has become a set value or less. The trickle charge is switched to the quick charge. The time to replace the battery can be determined by the number of quick charges. However, this is not for battery inspection or during inspection.

As described above, the battery inspection work takes a long time and requires labor for attaching and removing the weight.
The first problem to be solved by the present invention is to improve the maintainability by automating the battery inspection work and saving labor.
The second is to take necessary measures in preparation for stopping the inspection during the battery inspection.
Thirdly, if battery life, abnormality, etc. are found during battery inspection (during discharging) or charging, this is to be informed.
Fourth, the inspection result can be predicted with sufficiently high reliability even if the specified battery inspection time does not elapse, thereby shortening the battery inspection time.
Other problems will become apparent from the following description of embodiments and drawings.

An emergency lighting device according to the present invention includes a power supply circuit that converts an AC voltage of a commercial power supply into a DC voltage, a lighting unit that supplies a DC power from the power supply circuit or a battery, and lights the lamp, and the power supply circuit. Charging means for charging the connected battery; an inspection switch for starting an inspection of the state of the battery; a control means for starting an automatic inspection of the state of the battery by an ON operation of the inspection switch; and the inspection Timer means for measuring time after the switch is pressed, and display means for displaying an abnormality of the battery,
The control means includes
While the timer means is measuring the time, the DC power supply from the power supply circuit to the lighting means is stopped without shutting off the commercial power supply, and direct current power is supplied from the battery to the lighting means. was supplied, and the check sequence means the time that the timer means is clocking starts DC power supply to said lighting means from said power source circuit and passes a predetermined inspection time, the voltage at the power supply of said battery voltage detecting means for detecting the voltage and abnormality determination means for determining presence of an abnormality of said battery on the basis of the detection to the voltage detecting means, said the battery abnormality is judged result of the determination by the abnormality determination means Storage means for storing
While the inspection sequence means is operating, it operates with the power of the battery,
When it is determined by the abnormality determination means that the battery is abnormal during the time measured by the timer means , when the inspection sequence by the inspection sequence means ends and the power supply circuit is turned on regularly, The battery abnormality display is continued on the display unit based on the determination result stored in the storage unit until the battery abnormality is released .

With this configuration, the inspection sequence automatically starts when the inspection switch is turned on for a short time, so that the battery inspection can be saved and the maintainability can be improved. Further, by detecting the battery discharge voltage, it is possible to determine whether or not the battery is abnormal and to predict the battery life, so that the inspection time can be shortened. In addition, battery abnormality can be known at an early stage, and battery replacement can be promoted.

  With this configuration, it is possible to know battery abnormality at an early stage, and to promote battery replacement.

  In the emergency lighting device according to the present invention, the control unit detects that the battery has been replaced based on the voltage detected by the voltage detection unit, and determines that the abnormality of the battery has been released. An exchange detection means is provided.

  With this configuration, it is possible to know that the battery has been correctly replaced, and it is possible to know an abnormality such as a mounting failure after battery replacement, so that maintainability is improved.

  The emergency lighting device according to the present invention terminates the operation of the inspection sequence means when the control means detects that the inspection switch is pressed again while the timer means is measuring time. Judgment means for starting the operation of the power supply circuit is provided.

  With this configuration, if you want to stop the inspection work, press the inspection switch again while the timer means is measuring the time, so that the inspection operation can be performed immediately without waiting for the specified inspection time to end. It can be canceled and inspection work can be saved.

Example 1.
FIG. 1 is a flowchart showing the operation of the control circuit of the emergency lighting apparatus according to the first embodiment of the present invention.
In the present embodiment, the automatic inspection program shown in FIG. 1 is incorporated into the control circuit 15 shown in FIG. 18 to automate the battery inspection work and save labor. A process surrounded by a broken line in FIG. 1 shows an inspection sequence 20, and a timer T1 is used to execute this. The set time t1 of the timer T1 is set to about several seconds. Further, the set time t2 of the second timer T2 incorporated in the inspection sequence 20 is an inspection time determined by legal regulations. For example, t2 = 20 minutes or 60 minutes for a guide light, and t2 = 30 minutes for an emergency light.

The operation of this embodiment will be described with reference to FIG. The description will be made with reference to FIGS. If the inspection switch 8 is OFF in step S1, the timer T1 = 0 in step S2 is executed and the process returns to step S1. Therefore, the lamp 10 is lit by receiving power supply from the power supply circuit 13. The battery 9 is also charged. Next, when the inspector turns on the inspection switch 8 for the purpose of checking the battery, the timer T1 starts operating in step S3, and the elapsed time of the timer T1 is compared with the set time t1 in the next step S4. To do. Since the set time t1 is set to about several seconds, at this time, even if the inspection switch 8 is momentarily turned ON due to mischief or malfunction, the operation does not proceed to the inspection operation only from step S1 to step S2.
Next, if it is determined in step S4 that the elapsed time of the timer T1 is greater than t1, that is, if the inspector is pulling the pulling wheel 3 for the purpose of battery inspection, the inspection sequence 20 starts from step S5. First, in step S5, a signal for stopping the operation of the power supply circuit 13 is input to the ON / OFF terminal of the power supply circuit 13. As a result, the output voltage of the power supply circuit 13 becomes 0 V, which is the same as in the power failure state, and the lamp 10 is lit by the power from the battery 9. Therefore, the battery 9 is discharged, and the voltage of the battery 9 gradually decreases. Next, in step S6, the voltage of the battery 9 is monitored, and the magnitude of the voltage of the battery 9 and the battery lower limit voltage E are compared. If the voltage of the battery 9 is higher than E, the process proceeds to step S7, and if it is lower, the process proceeds to step S8. When the process proceeds to step S8, that is, when the voltage of the battery 9 suddenly drops to the E voltage during inspection, the operation of the inverter circuit 18 is stopped and the lamp 10 is turned off. When the process proceeds to step S7, the timer T2 is operated, and the elapsed time of the timer T2 is compared with the set time t2 in step S9. The set time t2 is set to a specified time for the battery check operation. If it is determined in step S9 that the inspection time has ended, the process proceeds to step S10, and if not, the process returns to step S5. In step S9, the power supply circuit 13 is turned ON, and when the inverter circuit 18 is turned OFF during inspection, the inverter circuit 18 is turned ON. Then, the process returns to step S1.

  As described above, in this embodiment, the battery check operation is automatically started by turning on the check switch 8 for the predetermined time t1 or more, and then the battery check operation is automatically ended after the predetermined time t2. Therefore, according to this embodiment, it is not necessary to attach or remove the weight to the pulling wheel 3 as in the prior art, and the battery check operation is automatically executed according to the automatic check program incorporated in the control circuit 15. Therefore, the battery check operation can be automated and labor-saving, and the battery can be prevented from being discharged due to mischief or malfunction.

Example 2
In the first embodiment, the inspection sequence 20 is automatically started by turning on the inspection switch 8 for a predetermined time t1 or longer. Therefore, in this embodiment, the inspection operation is immediately canceled when it is desired to stop the inspection during the battery inspection operation. It is what you do. That is, the inspection operation is canceled by turning on the inspection switch 8 again for a predetermined time t3 or more.

FIG. 2 is a flowchart showing the operation of this embodiment.
The operation of this embodiment will be described. In step S11, it is determined whether the inspection switch 8 is ON for a predetermined time t1. This corresponds to steps S1 to S4 in the flowchart shown in FIG. If the inspection switch 8 is ON and the state continues for a predetermined time, the process proceeds to step S12 and an inspection sequence is executed. This corresponds to the inspection sequence 20 of FIG. 1 and is the same as the operation from step S5 to step S10.
During the inspection operation, the state of the inspection switch 8 is monitored in step S13, and if the inspection switch 8 is ON for a predetermined time t3 or more as in step S11, the inspection operation end in step S14 is executed. Therefore, when the inspection switch 8 is turned on for the second time and the state continues for the predetermined time t3 or more, the inspection operation is immediately terminated. The inspection end operation corresponds to step S10 in FIG. 1, and the power supply circuit 13 is turned on. If the inverter circuit 18 is stopped, the inverter circuit 18 is turned on. Then, the process returns to step S11.

  According to the present embodiment, when it is desired to stop the inspection during the inspection operation, for example, when the lamp is immediately turned off due to the battery life, the inspection operation can be immediately stopped without waiting for the specified inspection time to end. , Inspection work can be saved.

Example 3
In this embodiment, when it is determined that the battery is at the end of its life during regular lighting, the battery is displayed to prompt the user to replace the battery. That is, the output voltage of the power supply circuit 13 or the battery charging current of the charging circuit 14 is detected, the battery charging time is integrated, and the battery replacement time is displayed.

FIG. 3 is a circuit diagram showing the internal configuration of the lighting device 12 of this embodiment, and FIG. 4 is a flowchart showing the operation of the control circuit 15 of FIG.
As shown in FIG. 3, the charging voltage or charging current of the charging circuit 14 is input to the control circuit 15 and monitored.

The operation of this embodiment will be described with reference to FIG.
In step S21, the power supply circuit 13 is turned on. By turning on the power supply circuit 13, the battery 9 is charged via the charging circuit 14, and at the same time, the lamp 10 is turned on via the diode OR circuit 16, the DC-DC converter circuit 17, and the inverter circuit 18. In step S22, the output voltage of the charging circuit 14 is monitored. If the output of the power supply circuit 13 is 0V, the red LED of the battery monitor 4 is turned on in step S27 and step S22 is repeated. Conversely, if the output of the charging circuit 14 outputs a normal voltage, the green LED of the battery monitor 4 is turned on in step S23. This informs that the battery 9 is being charged. When a voltage is output from the power supply circuit 13 and the battery is connected, charging (trickle charging) is always performed at a low current value. In step S24, the charging time of the battery 9 is accumulated by the timer T3. In step S25, the accumulated time of the timer T3 is compared with a preset time t3, and if the accumulated time is greater than t3, the process proceeds to step S26, and if smaller, the process proceeds to step S22. When the process proceeds to step S26, the red LED of the battery monitor 4 is turned on, and the process returns to step S22.

  During battery charging, if the battery 9 is at the end of its life, the accumulated time of the timer T3 takes longer than the set time t3, so that the lamp monitor 4 indicates that the battery has reached the replacement time. Therefore, by replacing with a new battery, the reliability of the inspection work is improved and labor saving is achieved.

  In the present embodiment, the integration time of the timer T3 is performed by monitoring the output voltage of the charging circuit 14. However, if the charging current flowing through the battery 9 is monitored and the charging current is flowing, the timer time is set. The same effect can be obtained even if integration is performed. The same effect can be obtained by monitoring the output of the power supply circuit 13.

Example 4
In this embodiment, the rate of decrease in the battery discharge voltage is measured, and the inspection work is completed in a short time.
FIG. 5 is a flowchart showing the operation of the control circuit 15 in FIG. 3, FIG. 6 is a diagram showing the lighting time and battery voltage drop characteristics during inspection, the graph shown in a is a normal battery, the graph shown in b is This is a case where an inspection operation is performed on a battery at the end of its life. In the figure, Es is a voltage value set for preventing overdischarge of the battery, and when the battery voltage becomes lower than this value, the discharge is stopped. tx is a period during which the battery voltage decrease rate is not monitored, and the battery voltage decrease rate is not monitored until a predetermined initial time tx elapses after the start of battery discharge regardless of whether the battery is normal or abnormal.

The operation of this embodiment will be described with reference to FIG.
In step S31, the state of the inspection switch 8 is monitored. If the inspection switch 8 is ON, the process proceeds to step S32. If it is OFF, the process proceeds to step S33. In step S32, an inspection operation (inspection sequence 20 in FIG. 1) is performed, and in step S34, the voltage drop rate of the battery 9 is detected. The voltage drop rate is represented by ΔE / t0 as shown in FIG. 6, and is represented by a voltage drop value ΔE at unit time t0. In step S35, the voltage drop rate is compared with a predetermined value α. If the voltage drop rate is larger than α, step S36 is executed. If smaller, the process returns to step S32. In step S36, an OFF signal is sent to the inverter circuit 18 to turn off the lamp 10. Therefore, in the conventional circuit, the abnormality of the battery 9 is detected only when the battery overdischarge prevention voltage Es is reached (point indicated by B), but in this embodiment, the lamp 10 is turned off at the point indicated by A. Battery abnormality can be confirmed.

  As described above, abnormalities such as battery failure and life can be detected early without continuing the lighting of the lamp during the specified inspection time, and the inspection is completed in a short time, so that the inspection time can be shortened.

Example 5 FIG.
In this embodiment, the battery is trickle charged with a constant current, and if the battery charging voltage or charging current does not reach a predetermined value even after a predetermined time has elapsed, a battery abnormality display is performed.
FIG. 7 is a flowchart showing the operation of the control circuit 15 of FIG. 3, and FIG. 8 is a diagram showing battery voltage characteristics with respect to charging time. In the figure, c represents the voltage characteristic of a normal battery, and d represents the voltage characteristic of a battery at the end of its life. EM represents a set voltage, and ts represents a timer time.

The operation of this embodiment will be described with reference to FIG.
In step S41, it is confirmed whether the battery 9 is charged. This detects the output voltage or output current of the charging circuit 14. The charging circuit 14 is configured to flow a constant current to the battery 9. If the battery is not being charged in step S41, the process proceeds to step S42. If the battery is being charged, the process proceeds to step S43. In step S42, the timer time is set to zero. This timer T4 accumulates several tens of hours. In step S43, the battery monitor 4 is charged, and in step S44, the charging time is integrated. In step S45, the accumulated time of the timer T4 obtained by integrating the charging time is compared with a preset time ts. If the timer T4 reaches the set time, the process returns to step S46, and if not, the process returns to step S41. In step S46, the battery voltage is detected, and the battery voltage EB detected in step S47 is compared with the set voltage EM. If EB> EM, the process returns to step S41. If EB <EM, the battery abnormality is detected in step S48. Execute the display. For example, the battery abnormality display turns on the red LED of the battery monitor 4.
The operation will be further described with reference to FIG. 8. Graph c shows a case where a normal battery is charged and exceeds the set voltage EM at the time of charging time ts. As shown, the battery voltage does not become higher than the set voltage EM even when the charging time ts has been reached. At this time, a battery abnormality is displayed and battery replacement is prompted.

  According to the present embodiment, the battery life time can be displayed without performing an inspection operation, and battery replacement is performed immediately, so that maintenance is facilitated.

Example 6
In this embodiment, if an abnormality in the battery is found during emergency lighting or inspection, that is, during battery discharge, the battery abnormality is memorized during the subsequent charging of the battery, it is displayed, and further battery replacement is detected. The memory and display are canceled.
FIG. 9 is a flowchart showing the operation of the control circuit of FIG.

The operation of this embodiment will be described with reference to FIG.
In step S51, the discharge state of the battery 9, that is, the output voltage of the power supply circuit 13 is detected. When the output voltage of the power supply circuit 13 is 0V, the lamp 10 is lit by the power from the battery 9. If the battery 9 is being discharged, the process proceeds to step S52. If the battery 9 is not being discharged, that is, if it is being charged, the process proceeds to step S56. In step S52, it is detected whether the battery 9 is abnormal. If it is determined that the battery 9 is abnormal, the process proceeds to step S54, and if it is normal, the process returns to step S51. The battery abnormality is a case where the voltage value dropped due to the discharge of the battery 9 becomes equal to or lower than a preset lower limit voltage value, and in this case, the battery abnormality is stored as “battery abnormality flag = 1” in step S54. To do. In step S55, the battery monitor 4 is used to display a battery abnormality.

  When commercial power is applied to the terminal block 11, the power circuit 13 operates, and the lamp 10 is lit with power from the commercial power, the battery 9 is charged from the power circuit 13 via the charging circuit 14. In this state, in step S53, the state of the battery abnormality flag stored at the time of battery abnormality is confirmed. If the battery abnormality flag is “1”, the process proceeds to step S57. If the battery abnormality flag is “0”, step S53 is performed. The battery charge display of S56 is executed. The battery monitor 4 is used for the battery charge display. If the battery abnormality flag is “1” in step S53, that is, if a battery abnormality is detected during battery discharge, it is confirmed in step S57 whether the battery 9 has been replaced. The battery 9 is replaced by detecting the voltage of the battery 9 and detecting that the voltage of the battery 9 once becomes 0V. If the battery 9 has not been replaced, the battery abnormality display is continued in step S55. If the replacement of the battery 9 is confirmed, the battery abnormality flag is set to “0” in step S58, and the battery charge display in step S56 is executed.

  According to the present embodiment, when a battery life is detected at the time of power failure (emergency) or during emergency lighting, the battery abnormality is displayed, and the battery abnormality is memorized even if it is turned on regularly. Since it is displayed, it is possible to know which emergency lighting device battery should be replaced after a power failure recovery or after completion of inspection, so that the battery replacement can be performed in a lump and the maintainability is improved.

Example 7
In this embodiment, the inspection operation is performed for a predetermined time by turning off the commercial power supply for a short time.
FIG. 10 is an internal configuration diagram of the lighting device 12. A power failure detection circuit 19 is connected to the terminal block 11, detects the presence or absence of a commercial power supply, and outputs it to the control circuit 15.
FIG. 11 is a flowchart showing the operation of the control circuit 15 of FIG.

The operation of this embodiment will be described with reference to FIG.
In step S61, it is identified whether the automatic inspection mode is set. The automatic inspection mode is performed by remote operation by turning on / off the commercial power source, and the inspection operation is performed by this OFF operation. If it is not the automatic inspection mode, it is determined in step S62 whether or not the power failure detection circuit 19 is a power failure. If there is a power failure, the power failure time is integrated in step S63, and emergency lighting is performed in step S64. In the emergency lighting, the lamp 10 is turned on with the electric power from the battery 9, and an OFF signal is sent to the ON / OFF input of the power supply circuit 13. In the case of a power failure, the power supply circuit 13 outputs 0 V regardless of the ON / OFF input. However, the automatic inspection may be performed after that, and the control circuit 15 sends an OFF signal to the power supply circuit 13. If it is not a power failure, if the power failure time is within the range set in advance in step S65, that is, if t1> power failure time> t2, the process shifts to the automatic inspection mode in step S66. Execute. If the inspection time is out of the above range, regular lighting is performed in step S67. In the normal lighting, the lamp 10 is turned on with power supplied from a commercial power source, and the control circuit 15 sends an ON signal to the ON / OFF terminal of the power circuit 13. The output voltage of the power supply circuit 13 supplies power to the lamp 10 via the diode OR circuit 16, the DC-DC converter circuit 17, and the inverter circuit 18.
If it is determined in step S61 that the automatic inspection mode is selected, that is, if the power failure time is within a predetermined range and the automatic inspection flag = 1 is set, the inspection time is integrated in step S68. In step S69, the inspection time is compared with a preset time t3. If the inspection time = t3, the automatic inspection flag is set to “0” in step S70 and the process returns to step S61 so as to end the automatic inspection. If the inspection time has not reached t3, the emergency lighting is continued in step S64.

  According to the present embodiment, an inspection control line is not required, and the inspection operation can be remotely operated by turning on / off the external power switch. Therefore, an inexpensive and easy-to-maintain apparatus can be provided.

  In this embodiment, the power failure detection is performed with or without a commercial power supply, but the output voltage of the power supply circuit may be detected. In addition, automatic inspection is performed once after a power outage for a predetermined time, but it may be configured to repeat automatic power outage multiple times, that is, supply and stop commercial power, and in this case the actual power outage This is suitable for environments where power outages occur frequently.

Example 8 FIG.
In the present embodiment, when automatic inspection is set from the outside by repeatedly supplying and stopping commercial power, automatic inspection is performed if the stop time and supply time match a predetermined pattern.
FIG. 12 is a flowchart showing the operation of the control circuit 15 of FIG. 10, FIG. 13 is a timing diagram showing detection of a power failure, (a) is a commercial power source applied to the terminal block 11, and the shaded portion shows the power supply state. (B) is a detection output of the power failure detection circuit 19, and (c) is a lighting mode of the lamp 10, which shows normal lighting and emergency lighting.

The operation of this embodiment will be described with reference to FIG.
In step S71, whether or not the automatic inspection mode is set is identified by an automatic inspection flag. If it is the automatic inspection mode, step S79 is executed, and if it is not the automatic inspection mode, step S72 is executed. In step S72, the state of the detection output of the power failure detection circuit 19 is determined to recognize whether there is a power failure or power supply. If there is a power failure, the process proceeds to step S75. If power is supplied, the process proceeds to step S73. In step S73, the time for which power is supplied is measured. Usually, since it is supplied for a long time, the measurement time shows a maximum value (a limit value that can be measured by the timer). However, after a power failure, the time from the recovery of the power failure until the power failure is measured again. In step S74, the power supply circuit 13 and the like are controlled so that the regular lighting is performed. On the other hand, when the power failure state is input from the power failure detection circuit 19 in step S71, the power failure time is measured in step S75, and emergency lighting is performed in step S76. The power failure time is the time until commercial power is cut off and supplied again. In step S77, it is determined whether the time pattern measured in steps S73 and S75 matches a preset pattern. When the timing chart shown in FIG. 13A shows the power supply state and automatic inspection is set from the outside, for example, as shown in the figure, power supply and stop are regularly arranged, that is, t2 hours after a power failure of t1 hours. In the same manner, the power supply is interrupted so that the power failure occurs for t3 hours, the power supply for t4 hours, and the power failure for t5 hours. (B) is a detection output of the power failure detection circuit 19, and outputs a power failure state in synchronization with the power supply state of (a). Similarly, (c) shows the change in the lighting mode in synchronization with the power supply state. If the patterns do not match in step S77, the process returns to step S71. If they match, the automatic check flag is set to “1” in step S78, and the process returns to step S71. If it is determined in step S71 that the automatic inspection flag is “1”, step S79 is executed. In step S79, the inspection time is integrated, and in step S80, it is determined whether the inspection time matches a preset time ts. If they match, steps S82 and S83 are executed. In step S81, the lamp 10 is lit by emergency lighting, that is, the electric power from the battery 9, and the inspector confirms whether the lamp 10 is normally lit.

  The present embodiment has the same effect as the seventh embodiment. Also in this embodiment, the power failure detection may be performed with the output voltage of the power supply circuit.

Example 9
In this embodiment, the charging voltage or charging current of the battery is detected to detect a mounting failure such as battery detachment, and an abnormality is displayed.
FIG. 14 is a flowchart showing the operation of the control circuit 15 of FIG. 3, and FIG. 15 is a voltage characteristic diagram showing the terminal voltage for detecting the voltage of the battery 9 corresponding to the charging time.

The operation of this embodiment will be described with reference to FIG.
In step S91, the voltage of the battery 9 is detected. More precisely, the terminal voltage to which the battery 9 is connected is detected. In step S92, the detected voltage EB is compared with the set value Es. If EB <Es, the process proceeds to step S93. If EB> Es, the process proceeds to step S94. In step S93, a battery charge display, for example, a green LED is lit on the battery monitor 4, and in step S94, a battery abnormality display, for example, a red LED is lit.

  As shown in FIG. 15, when the battery cannot be charged for some reason, a battery abnormality is displayed at the point A where the detected voltage exceeds the set voltage Es. Further, when the charging current is detected, the battery abnormality is displayed when the charging current becomes zero.

  According to this embodiment, for example, when the battery is replaced, the connector for connecting the battery is insufficiently connected or when the connection is forgotten, the abnormality is immediately found and the maintainability is improved.

  As described above, the emergency lighting device of the present invention automatically starts the operation of the inspection sequence just by turning on the inspection switch for a short time, so that it is possible to save labor for battery inspection. There is an effect of improving maintainability.

  If you want to stop the inspection during battery inspection, turn on the inspection switch again for a predetermined time or more to stop the operation of the inspection sequence without waiting for the end of the specified inspection time. It is convenient in such a case.

  When the battery is being charged, the battery charging time is measured to determine whether the battery is normal or abnormal. By displaying the battery abnormality, it can be replaced quickly without any inspection work, making it safe and easy to maintain. .

  Further, since the battery life can be predicted by detecting the rate of decrease of the battery discharge voltage or discharge current, the inspection time can be shortened.

  Further, it is possible to know the battery replacement time by detecting the battery charging voltage or charging current.

  By storing and displaying the abnormality found during the battery check, it is possible to know which device's battery is abnormal after the recovery from the power failure or after the check is completed, and batch battery replacement becomes possible.

  In addition, since automatic inspection can be performed even when the external power switch is turned on / off, the inspection control line is not required, and the cost can be reduced. Further, at this time, by comparing the power failure time or power failure pattern, it can be identified as a normal power failure, and the labor of inspection work can be saved.

  You can see the installation failure after battery replacement.

  The lamp used in the present invention may be a cold cathode discharge lamp or a hot cathode discharge lamp.

It is a flowchart which shows operation | movement of Example 1 of this invention. It is a flowchart which shows operation | movement of Example 2 of this invention. It is a circuit block diagram which shows Example 3 of this invention. 10 is a flowchart illustrating the operation of the third embodiment. It is a flowchart which shows operation | movement of Example 4 of this invention. FIG. 6 is a characteristic diagram of battery voltage drop with respect to lighting time. It is a flowchart which shows operation | movement of Example 5 of this invention. It is a characteristic figure of the battery voltage with respect to charge time. It is a flowchart which shows operation | movement of Example 6 of this invention. It is a circuit block diagram which shows Example 7 of this invention. 10 is a flowchart showing the operation of the seventh embodiment. It is a flowchart which shows operation | movement of Example 8 of this invention. It is a timing diagram which shows a power failure detection. It is a flowchart which shows operation | movement of Example 9 of this invention. It is a characteristic view of the battery detection voltage with respect to charging time. It is an external view of the conventional guide light. It is an internal block diagram of the guide light of FIG. It is a circuit block diagram of the guide light of FIG.

Explanation of symbols

  4 battery monitor, 8 inspection switch, 10 lamp, 11 terminal block, 12 lighting device, 13 power supply circuit, 14 charging circuit, 15 control circuit, 16 diode OR circuit, 17 DC-DC converter circuit, 18 inverter circuit, 19 power failure detection Circuit, 20 inspection sequence, T1, T2, T3, T4 timer.

Claims (3)

A power supply circuit that converts the AC voltage of the commercial power supply into a DC voltage;
Lighting means for lighting a lamp by supplying direct current power from the power supply circuit or the battery;
Charging means for charging the battery connected to the power supply circuit;
An inspection switch for initiating inspection of the state of the battery;
Control means for starting an automatic check of the state of the battery by turning on the check switch;
Timer means for measuring time after the check switch is pressed;
Display means for displaying an abnormality of the battery;
With
The control means includes
While the timer means is measuring the time, the DC power supply from the power supply circuit to the lighting means is stopped without shutting off the commercial power supply, and direct current power is supplied from the battery to the lighting means. was supplied, and the check sequence means the time that the timer means is clocking starts power supply DC to said lighting means from said power source circuit and passes a predetermined inspection time,
Voltage detecting means for detecting a voltage at said power supply of said battery,
And abnormality determination means for determining the presence or absence of an abnormality of said battery on the basis of the detection to the voltage of said voltage detecting means,
Storage means for storing the determination result when the abnormality is determined by the abnormality determination means;
With
While the inspection sequence means is operating, it operates with the power of the battery,
When it is determined by the abnormality determination means that the battery is abnormal during the time measured by the timer means , when the inspection sequence by the inspection sequence means ends and the power supply circuit is turned on regularly, An emergency lighting device characterized in that the display means continues to display an abnormality of the battery based on a determination result stored in the storage means until the abnormality of the battery is canceled . The control means includes battery replacement detection means for detecting that the battery has been replaced based on a voltage detected by the voltage detection means and determining that the abnormality of the battery has been released. emergency lighting device according to claim 1 Symbol placement. If the control means detects that the check switch is pushed again while the timer means is measuring time, the control means ends the operation of the check sequence means and starts the operation of the power supply circuit. The emergency lighting device according to claim 2, further comprising:

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