JPH08185987A - Emergency lighting system - Google Patents

Abstract

PURPOSE: To attain the automation and power saving of the battery inspection work of an emergency lighting system, and improve the maintenance property. CONSTITUTION: This device has a power source circuit 13, a charging circuit 14 of a battery 9, and a control circuit 15 for controlling the power supply to a lamp 10. An inspection sequence consisting of an automatic inspection program is integrated into the control circuit, and the operation of the inspection sequence is started by a timer for detecting the on-operation for a prescribed time or more of an inspection switch 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency lighting device such as a guide light and an emergency light.

[0002]

2. Description of the Related Art An emergency lighting device lights a 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 turned on by the power of a battery power supply which is always provided. For this reason, the inspection of the battery is obligatory by the Fire Service Agency notification and the Building Standards Law.

The case of a conventional guide light will be described below as an example. FIG. 16 is an external view of a conventional guide light, in which (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 a check switch pulling ring, 4 is a battery monitor including LEDs, 5 is a power cord through hole, and 6 and 7 are main body mounting holes. FIG. 17 is a view showing the internal configuration 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. 18 is a circuit configuration diagram of the lighting device 12, 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, the terminal block 11 will be described.
Is connected to a commercial power source, and the commercial power source is I of the power supply circuit 13.
Input to N terminal. The power supply circuit 13 converts the AC voltage of the commercial power supply into a low-voltage 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 the DC voltage from the power supply circuit 13. The battery monitor 4 and the inspection switch 8 are connected to the control circuit 15, 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, red and green. The battery monitor 4 emits green light during charging and emits red light when an abnormality occurs. Diode OR
The circuit 16 transfers the DC output from the power supply circuit 13 to the DC-DC converter circuit 17 during normal lighting and the DC voltage of the battery 9 during emergency lighting such as power failure or inspection. The DC-DC converter circuit 17 stabilizes the transmitted DC voltage and outputs it. The inverter circuit 18 is DC-D
The DC voltage of the C converter circuit 17 is input, converted into a high voltage AC voltage, and output. The cold cathode discharge lamp 10 is connected to the output of the inverter circuit 18,
The lamp 10 is lit (usually lit) by being discharged by the high voltage output from the.

When the power supply to the terminal block 11 is cut off, that is, when there is a power failure, the output voltage of the power supply circuit 13 becomes 0V, 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, the electric power for lighting the lamp 10 during the power failure is supplied from the battery 9.

The battery inspection is a work for confirming whether or not the battery 9 operates normally. The inspector pulls the pulling wheel 3 to
Operate 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 a power failure, and the lamp 10 is turned on 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 drops below a specified value, sends an OFF signal to the ON / OFF terminal of the inverter circuit 18 to stop the inverter circuit 18. . When the inverter circuit 18 is stopped, the lamp 10 is turned off.

[0007] Battery inspection is required by regulations to effectively turn on the lamp for 20 minutes or 60 minutes for the guide light and 30 minutes for the emergency light. Since it has to be lit for such a long time, the inspector hangs a weight on the pulling wheel 3 and confirms whether or not the prescribed inspection time lamp 10 is effectively lit by means of battery voltage measurement or the like. . If the battery is at the end of its life, the battery voltage drops sharply within this inspection time and the lamp goes out, so that it is possible to confirm the necessity of battery replacement. Then, when the prescribed inspection time is over, the inspector removes the weight from the pulling wheel 3, and therefore the inspection switch 8
Is turned off, and the control circuit 15 turns on / off the power supply circuit 13.
An ON signal is sent to the OFF terminal to cancel the operation stop of the power supply circuit 13. When the power supply circuit 13 is restored, the normal state is restored, and the lamp 10 is turned on by the power from the commercial power supply.

Further, as a measure against a power failure or the like immediately after the completion of the battery inspection, there is disclosed in JP-A-58-164190.
There is a gazette. This emergency lighting device is equipped with 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 lapse of a predetermined battery discharging time falls below a set value. The trickle charge is switched to the quick charge. You can tell when to replace the battery from the number of quick charges. However, it is not for battery inspection or during inspection.

[0009]

As described above, the battery inspection work takes a long time, and labor is required to attach and detach the weight. The first problem to be solved by the present invention is to improve the maintainability by automating and labor saving the battery inspection work. The second is to take necessary measures in case the user wants to cancel the inspection during battery inspection. Third, the battery life during battery inspection (discharging) or charging,
If an abnormality is found, it is to inform it. Fourth, it is possible to predict the inspection result with sufficiently high reliability even if the prescribed battery inspection time has not elapsed, thereby shortening the battery inspection time. Other problems will be clarified from the following embodiments and the description of the drawings.

[0010]

In order to solve the first problem, an emergency lighting apparatus according to the present invention is connected to the commercial power source and lighting means for supplying power from a commercial power source to turn on a lamp. In an emergency lighting device having charging means for charging a battery, and control means for controlling power supply to the lamp from the commercial power source and the battery, the control means has inspection sequence means for the battery. A timer means for starting the operation of the inspection sequence means when the inspection switch is turned on for a predetermined time or longer is provided. The inspection sequence means has a second timer means, and a comparison means for comparing the elapsed time of the second timer means with a predetermined inspection time.

In order to solve the second problem, the inspection sequence means has a judgment means for ending the operation of the inspection sequence means when the inspection switch is turned on again for a predetermined time or longer.

In order to solve the third problem, the control means integrates battery charging time with means for detecting a battery charging voltage or charging current of the charging means or means for detecting an output voltage of the commercial power source. Timer means, a comparing means for comparing the battery charging time with a set time, and a displaying means for displaying the necessity of battery replacement based on the result of the comparing means. Further, the control means compares the battery charging time with a timer means, a detecting means for detecting a battery charging voltage or a charging current, and compares the battery charging voltage or the charging current with a set value when the battery charging time elapses. It has a comparison means and a display means for displaying the necessity of battery replacement based on the result of the comparison means. Further, the control means has means for storing and displaying the battery abnormality even after the commercial power supply is restored, when the battery abnormality is found during battery discharge.

In order to solve the fourth problem, the inspection sequence means has a detection means for detecting the rate of decrease of the battery discharge voltage and a comparison means for comparing the rate of decrease of the battery discharge voltage with a set value. .

As another invention for solving the first problem, the control means is an ON / O switch for an external power switch.
The detection means for detecting FF, the inspection sequence means for the battery, and the determination means for determining the state of the automatic inspection mode of the inspection sequence means by the output of the detection means. The inspection sequence means has a determination means for determining the power failure time when the automatic inspection mode is not set. Further, it has a judging means for judging a power failure pattern consisting of a power failure time and a power supply time when not in the automatic inspection mode.

Further, according to the present invention, the control means is based on a detection means for detecting a battery terminal voltage after battery replacement, a comparison means for comparing the battery terminal voltage with a set value, and a result of the comparison means. And a display unit for displaying whether or not the battery replacement is appropriate.

[0016]

When the battery is inspected, the inspector turns on the inspection switch for a predetermined short time. The timer means counts this ON time, and when a predetermined time elapses, the inspection sequence means incorporated in the control means automatically starts the inspection operation. The second timer means integrates the prescribed inspection time. The result of the comparison means indicates whether the inspection work has been completed.

The automatic inspection operation can also be started by turning off the external power switch. In this case, it is possible to identify a normal power failure by comparing the power failure time or the power failure pattern.

If it is desired to cancel the inspection during the inspection, the inspection operation is canceled by turning on the inspection switch again for a predetermined time or longer, and the inspection sequence means immediately ends the operation. Therefore, the inspection operation can be stopped without waiting for the prescribed inspection time to end, which is convenient for inspection of the battery at the end of its life.

The battery replacement time can be known by measuring the battery charging time. Further, the inspection time can be shortened by measuring the decrease rate of the battery discharge voltage or the discharge current. Further, when a battery abnormality is found during battery discharge, the abnormality is stored and displayed, so that the battery can be replaced collectively.

Even when the battery is not normally attached when the battery is replaced, it is possible to detect the attachment defect by detecting the terminal voltage.

[0021]

【Example】

Example 1. FIG. 1 is a flowchart showing the operation of the control circuit of the emergency lighting device according to the first embodiment of the present invention. In this embodiment, the automatic inspection program shown in FIG. 1 is incorporated into the control circuit 15 shown in FIG.
This is to save labor. The process surrounded by the broken line in FIG. 1 shows the inspection sequence 20, and the 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 the inspection time specified by law. For example, in the case of a guide light, t
2 = 20 minutes or 60 minutes, and in the case of an emergency light, t2 = 30 minutes.

The operation of this embodiment will be described with reference to FIG.
Further, 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 being charged. Next, when the inspector turns on the inspection switch 8 for the purpose of battery inspection, the timer T is set in step S3.
1 starts the operation, and in the next step S4, the elapsed time of the timer T1 and the set time t1 are compared. Set time t
Since 1 is set to about several seconds, at this time, even if the inspection switch 8 is momentarily turned on due to mischief or malfunction,
Only the process shifts from step S1 to step S2, and not the inspection operation. Next, in step S4, when it is determined that the elapsed time of the timer T1 is longer than t1, that is, when the inspector pulls the pulling wheel 3 for the purpose of battery inspection, the inspection sequence from step S5 is executed.
Will start. 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 similar to the power failure state, and the lamp 10 is turned on by the power from the battery 9. Therefore, the battery 9 is in a discharged state, and the voltage of the battery 9 gradually decreases. next,
In step S6, the voltage of the battery 9 is monitored, and 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, step S7
If it is low, the process proceeds to step S8. Step S8
If the voltage of the battery 9 drops sharply to the E voltage during inspection, the inverter circuit 18
Then, the lamp 10 is turned off. Step S7
If the process goes to step S9, the timer T2 is activated and step S9
Then, the elapsed time of the timer T2 is compared with the set time t2. The set time t2 is set to a specified time for the battery checking 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 the inverter circuit 18 is turned off during inspection.
When it is set, the inverter circuit 18 is turned on. Then, the process returns to step S1.

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

Embodiment 2 FIG. In the first embodiment, the inspection switch 2 is turned on by turning on the inspection switch 8 for a predetermined time t1 or more.
Since 0 automatically starts, in the present embodiment, when it is desired to stop the inspection during the battery inspection operation, the inspection operation is immediately released. That is, the inspection operation is canceled by turning on the inspection switch 8 again for a predetermined time t3 or longer.

FIG. 2 is a flow chart showing the operation of this embodiment. The operation of this embodiment will be described. Step S11
At, it is determined whether the inspection switch 8 is ON for a predetermined time t1. This corresponds to steps S1 to S4 of the flowchart shown in FIG. When the inspection switch 8 is ON and remains in that state for a predetermined time, the process proceeds to step S12 to execute the inspection sequence.
This corresponds to the inspection sequence 20 of FIG.
It is similar to the operation from 5 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 has been ON for the predetermined time t3 or more, the inspection operation end in step S14 is executed, as in step S11. Therefore, when the inspection switch 8 is turned on for the second time and the state continues for a predetermined time t3 or longer, the inspection operation is immediately ended. The inspection end operation corresponds to step S10 in FIG. 1, and turns on the power supply circuit 13 and, if the inverter circuit 18 is stopped, turns on the inverter circuit 18. Then, the process returns to step S11.

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

Embodiment 3 FIG. In the present embodiment, when it is found that the battery is at the end of its life during normal lighting, it is displayed to prompt replacement of 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 structure of the lighting device 12 of this embodiment, and FIG. 4 is a flow chart showing the operation of the control circuit 15 of FIG. As shown in FIG. 3, the charging circuit 1
The charging voltage or charging current of No. 4 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. Step S2
2, the output voltage of the charging circuit 14 is monitored and the power supply circuit 13
Is 0 V, the red LED of the battery monitor 4 is turned on in step S27 and step S22 is repeated.
On the contrary, 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, and when the voltage is output from the power supply circuit 13 and the battery is connected, the battery 9 is always charged with a low current value (trickle charge). Then, in step S24, the charging time of the battery 9 is integrated by the timer T3. In step S25, the integrated time of the timer T3 is compared with a preset time t3. If the integrated time is longer than t3, the process proceeds to step S26, and if it is 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 cumulative time of the timer T3 is the set time t3.
Since it takes a longer time, the red lighting display of the lamp monitor 4 indicates that the battery is about to be replaced.
Therefore, replacement with a new battery improves the reliability of the inspection work and saves labor.

In this embodiment, the integration time of the timer T3 is monitored by monitoring the output voltage of the charging circuit 14, but if the charging current flowing in the battery 9 is monitored and the charging current is flowing, The same effect can be obtained by integrating the timer time. 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 of the battery discharge voltage is measured and the inspection work is completed in a short time. 5 is a flowchart showing the operation of the control circuit 15 of FIG. 3, and FIG. 6 is a diagram showing the lighting time and the battery voltage drop characteristic at the time of inspection. The graph shown in a is a normal battery, and the graph shown in b is This is the case when the inspection operation is performed on the battery at the end of its life. In the figure, Es is a voltage value set to prevent over-discharge of the battery, and when the battery voltage becomes lower than this value, the discharge is stopped. tx is a period in which the decrease rate of the battery voltage is not monitored, and the decrease rate of the battery voltage is not monitored until a predetermined initial time tx elapses after the start of discharging the battery 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, and if the inspection switch 8 is ON, then in step S32,
If it is OFF, the process proceeds to step S33. Step S
In 32, an inspection operation (inspection sequence 20 in FIG. 1) is performed, and the voltage decrease rate of the battery 9 is detected in step S34. The voltage decrease rate is represented by .DELTA.E / t0 as shown in FIG. 6, and is represented by the voltage decrease value .DELTA.E at the unit time t0. In step S35, this voltage decrease rate is compared with the predetermined value α to determine the magnitude. If the voltage decrease rate is greater than α, step S36 is executed. If it is smaller, the process returns to step S32. In step S36, the inverter circuit 18 is turned off
A signal is sent to turn off the lamp 10. Therefore, in the conventional circuit, the abnormality of the battery 9 is detected only after the battery over-discharge prevention voltage Es is reached (point B), but in the present embodiment, the lamp 10 is turned off at the point A, so early. Battery abnormality can be confirmed.

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

Example 5. In this embodiment, the battery is trickle charged with a constant current, and if the battery charging voltage or the charging current does not reach a predetermined value even after a lapse of a predetermined time, a battery abnormality is displayed. FIG. 7 shows the control circuit 15 of FIG.
FIG. 8 is a flowchart showing the operation of FIG. 8, and FIG. 8 is a diagram showing battery voltage characteristics with respect to charging time. In the figure, c shows the voltage characteristic of a normal battery, and d shows the voltage characteristic of the battery at the end of its life. EM indicates a set voltage and ts indicates 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, and if the battery is being charged in step S43.
Move to In step S42, the timer time is set to 0. The timer T4 integrates several tens of hours. In step S43, the battery monitor 4 is charged and displayed, and in step S44, the charging time is integrated. In step S45, the integrated time of the timer T4, which is the total 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, and EB <EM
If so, the battery abnormality display of step S48 is executed. For example, the red LED of the battery monitor 4 is turned on for the battery abnormality display. Describing the operation further with reference to FIG. 8, the graph c shows the case where the normal battery is charged and the voltage value of the set voltage EM is exceeded at the charging time ts.
In the case of the battery at the end of its life, the battery voltage does not become higher than the set voltage EM even if the charging time ts has been reached as shown in the graph d. At this point, the battery abnormality is displayed to prompt the battery replacement.

According to this embodiment, the life of the battery can be displayed without performing the inspection operation, and the battery can be replaced immediately, so that the maintenance becomes easy.

Example 6. In the present embodiment, when the battery abnormality is found during emergency lighting or inspection, that is, during battery discharge, the battery abnormality is also stored during the subsequent battery charging and is displayed, and further battery replacement is detected. However, the memory and display are canceled. FIG. 9 shows FIG.
3 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. Power supply circuit 13
When the output voltage is 0 V, the lamp 10 is turned on by the electric power from the battery 9. If the battery 9 is discharging, the process proceeds to step S52, and if not discharging, that is, if charging, the process proceeds to step S56. In step S52, the battery 9
Is abnormal, and if it is determined to be abnormal, step S
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 the preset lower limit voltage value, and in that case, the fact that the battery is abnormal is stored as “battery abnormality flag = 1” in step S54. To do.
Further, in step S55, the battery monitor 4 is used to display the battery abnormality.

When the commercial power source is applied to the terminal block 11 and the power source circuit 13 operates and the lamp 10 is lit by the power from the commercial power source, the battery 9 is charged from the power source circuit 13 via the charging circuit 14. It 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, and if the battery abnormality flag is "0", step 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. When the battery 9 is replaced, the voltage of the battery 9 is detected to detect that the voltage of the battery 9 has once become 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 of step S56 is executed.

According to this embodiment, when the life of the battery is detected during emergency lighting such as during a power failure (emergency) or during inspection, a battery abnormality is displayed, and the battery abnormality is displayed even after the normal lighting. Since it stores and displays, it is possible to know which emergency lighting device battery should be replaced after a power failure is restored or after inspection is completed, so the batteries can be replaced all at once, improving maintainability. To do.

Embodiment 7 FIG. 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, and the power failure detection circuit 1
9 is connected to the terminal block 11 and detects the presence or absence of a commercial power source 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. Automatic inspection mode turns on / off commercial power
Is performed by remote control, and the inspection operation is performed by this OFF operation. If not in the automatic inspection mode, it is determined in step S62 whether or not the power failure detection circuit 19 is in power failure. If there is a power failure, the power failure time is integrated in step S63, and the emergency lighting is performed in step S64. Emergency lighting is to turn on the lamp 10 with the power from the battery 9,
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, but after that, automatic inspection may be performed, 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 preset range in step S65, that is, if t1> power failure time> t2, the automatic check mode is entered in step S66. Therefore, the automatic check flag is set to "1" and step S64 is executed. Run. If the inspection time is out of the above range, normal lighting is performed in step S67. The normal lighting is to light the lamp 10 with the power supplied from the commercial power supply, and the control circuit 15 sends an ON signal to the ON / OFF terminal of the power supply 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 the automatic inspection mode is determined in step S61, that is, if the power failure time is within the 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 the preset time t3, and if the inspection time = t3, the automatic inspection flag is set to "0" in step S70 and the process returns to step S61 to end the automatic inspection. If the inspection time has not reached t3, the emergency lighting is continued in step S64.

According to this embodiment, since the inspection control line is not required and the inspection operation can be remotely operated by turning on / off the external power source switch, it is possible to provide an inexpensive and easy maintenance apparatus.

In this embodiment, the power failure is detected with or without the commercial power supply, but the output voltage of the power supply circuit may be detected.
In addition, the automatic inspection is performed by one power outage for a predetermined time, but the automatic inspection may be performed by repeating the power outage multiple times, that is, by repeatedly supplying and stopping the commercial power source. In this case, the actual power outage is performed. Is more reliable and is suitable for environments where frequent power outages occur.

Example 8. In this embodiment, commercial power supply,
When the automatic inspection is set from the outside by repeating the stop, the automatic inspection is performed if the stop time and the supply time match a predetermined pattern. FIG. 12 shows FIG.
13 is a flowchart showing the operation of the control circuit 15 of FIG.
Is a timing diagram showing power failure detection, (a) is the terminal block 11
In the commercial power applied to, the shaded area indicates 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 indicates 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 the automatic inspection flag. If it is the automatic inspection mode, step S79. If it is not the automatic inspection mode, step S79.
Execute 72. In step S72, the power failure detection circuit 19
Judge the status of the detection output of and recognize whether there is a power failure or power supply. If there is a power failure, the process proceeds to step S75, and if there is power supply, the process proceeds to step S73. Step S73
Then, measure the time that the power is being supplied. Since it is usually supplied for a long time, the measurement time shows the maximum value (the limit value that can be measured by the timer), but after the power failure, the time from the power failure recovery to the power failure again is measured. Then, in step S74, the power supply circuit 13 is turned on so as to be normally lit.
Etc. are controlled. On the other hand, when the power failure state is input from the power failure detection circuit 19 in step S71, step S75
In step S76, the power failure time is measured, and the emergency lighting is performed. The power failure time is the time until the commercial power supply is cut off and supplied again. In step S77, it is determined whether or not the time pattern measured in steps S73 and S75 matches the preset pattern. When the timing diagram shown in FIG. 13A shows the power supply state and the automatic inspection is set from the outside, for example, as shown in FIG. 13, the power supply and stop are regularly performed, that is, after the power failure of t1 time, t2 time. Power supply, similarly t3 hours power failure, t
Power supply is interrupted for 4 hours and power failure for t5 hours. (B) is the detection output of the power failure detection circuit 19,
The power failure state is output in synchronization with the power supply state of (a).
Similarly, (c) shows a 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, and if they match, the automatic inspection 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 added up, and step S
In step 80, it is determined whether the inspection time matches the preset time ts, and if they match, step S82 and step S83 are executed. In step S81, emergency lighting is performed, that is, the lamp 10 is lit by the power from the battery 9, and the inspector confirms whether or not the lamp 10 is lit normally.

This embodiment has the same effect as that of the seventh embodiment. Also in this embodiment, the power failure detection may be performed by the output voltage of the power supply circuit.

Example 9. In this embodiment, the charging voltage or the charging current of the battery is detected to detect a mounting defect such as detachment of the battery, and an abnormality is displayed. 14 is a flowchart showing the operation of the control circuit 15 of FIG. 3, FIG.
5 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, but more precisely, the terminal voltage connecting the battery 9 is detected. In step S92, the detected voltage EB and the set value E are set.
s is compared, and if Eb <Es, step S9
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 on the battery monitor 4.

As shown in FIG. 15, when the battery cannot be charged for some reason, a battery abnormality is displayed at a point A where the detected voltage exceeds the set voltage Es. Also,
When the charging current is detected, when the charging current becomes 0, the battery abnormality is displayed.

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

[0053]

As described above, in the emergency lighting device of the present invention, the inspection sequence starts automatically only by turning on the inspection switch for a short time. This has the effect of saving labor and improving maintainability.

When it is desired to stop the inspection during the battery inspection, by turning on the inspection switch again for a predetermined time or more, the operation of the inspection sequence can be stopped without waiting for the prescribed inspection time to end. This is convenient when it becomes clear that, etc.

When the battery is being charged, the battery charging time is measured to find out whether the battery is normal or abnormal. By displaying the battery abnormality, the battery can be replaced at an early stage without inspection work, so that safe and maintenance is possible. It will be easy.

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

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

By storing and displaying the abnormality found during the battery inspection, it is possible to know which device the battery is abnormal after the power failure is restored or after the inspection is completed, and it is possible to collectively replace the battery.

Further, since the automatic inspection can be performed even by turning on / off the external power switch, the inspection control line is not required, so that the cost can be reduced. Further, at this time, it is possible to distinguish from a normal power failure by comparing the power failure time or the power failure pattern, and labor for inspection work can be reduced.

It can be seen that the mounting is defective after the battery is replaced.

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

[Brief description of drawings]

FIG. 1 is a flowchart showing the operation of the first embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of the second embodiment of the present invention.

FIG. 3 is a circuit configuration diagram showing a third embodiment of the present invention.

FIG. 4 is a flowchart showing the operation of the third embodiment.

FIG. 5 is a flowchart showing the operation of the fourth embodiment of the present invention.

FIG. 6 is a characteristic diagram of decrease in battery voltage with respect to lighting time.

FIG. 7 is a flowchart showing the operation of the fifth embodiment of the present invention.

FIG. 8 is a characteristic diagram of battery voltage with respect to charging time.

FIG. 9 is a flowchart showing the operation of the sixth embodiment of the present invention.

FIG. 10 is a circuit configuration diagram showing a seventh embodiment of the present invention.

FIG. 11 is a flowchart showing the operation of the seventh embodiment.

FIG. 12 is a flowchart showing the operation of the eighth embodiment of the present invention.

FIG. 13 is a timing diagram showing power failure detection.

FIG. 14 is a flowchart showing the operation of the ninth embodiment of the present invention.

FIG. 15 is a characteristic diagram of battery detection voltage with respect to charging time.

FIG. 16 is an external view of a conventional guide light.

17 is an internal configuration diagram of the guide light of FIG. 16. FIG.

FIG. 18 is a circuit configuration diagram of the guide light of FIG. 16.

[Explanation of symbols]

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

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Nagai 2-14-40 Ofuna, Kamakura-shi In living environment research and development center, Mitsubishi Electric Corporation (72) Inventor Hiroyasu I-city 2-14-40 Ofuna, Kamakura-shi Mitsubishi Electric Co., Ltd. Living Environment Research and Development Center

Claims (11)

[Claims] 1. A lighting means for supplying electric power from a commercial power source to light a lamp, a charging means connected to the commercial power source for charging a battery, and a power supply from the commercial power source and the battery to the lamp. In the emergency lighting device having a control means for controlling, the control means has the battery inspection sequence means, and has timer means for starting the operation of the inspection sequence means when the inspection switch is turned on for a predetermined time or more. An emergency lighting device characterized by the above. 2. The inspection sequence means includes a second timer means and a comparison means for comparing an elapsed time of the second timer means with a predetermined inspection time. Emergency lighting system. 3. The inspection sequence means according to claim 1 or 2, further comprising: a determination means for ending the operation of the inspection sequence means when the inspection switch is turned on again for a predetermined time or longer. Emergency lighting device. 4. A lighting means for supplying power from a commercial power source to light a lamp, a charging means connected to the commercial power source for charging a battery, and a power supply from the commercial power source and the battery to the lamp. In the emergency lighting device having a control means for controlling, the control means integrates a battery charging time with a means for detecting a battery charging voltage or a charging current of the charging means or a means for detecting an output voltage of the commercial power source. An emergency lighting device, comprising: a timer means for controlling the battery charging time, a comparing means for comparing the battery charging time with a set time, and a displaying means for displaying the necessity of battery replacement based on the result of the comparing means. 5. The inspection sequence means includes a detection means for detecting a rate of decrease of the battery discharge voltage and a comparison means for comparing the rate of decrease of the battery discharge voltage with a set value. The emergency lighting device according to claim 2 or 3. 6. A lighting means for supplying electric power from a commercial power source to light a lamp, a charging means connected to the commercial power source for charging a battery, and a power supply from the commercial power source and the battery to the lamp. In the emergency lighting device having a control means for controlling, the control means includes a timer means for integrating a battery charging time, a detection means for detecting a battery charging voltage or a charging current, and the battery charging voltage or a charging current. An emergency lighting device comprising: a comparison unit that compares a set value when a battery charging time has elapsed, and a display unit that displays the necessity of battery replacement based on the result of the comparison unit. 7. A lighting means for supplying electric power from a commercial power source to light a lamp, a charging means connected to the commercial power source for charging a battery, and a power supply from the commercial power source and the battery to the lamp. In the emergency lighting device having a control means for controlling, when the battery abnormality is found during battery discharge, the control means has a means for storing and displaying the battery abnormality even after the commercial power is restored. A special emergency lighting device. 8. A lighting means for supplying electric power from a commercial power source to light a lamp, a charging means connected to the commercial power source for charging a battery, and a power supply from the commercial power source and the battery to the lamp. In the emergency lighting device having a control means for controlling, the control means detects the ON / OFF of an external power switch, the battery inspection sequence means, and the inspection sequence means based on the output of the detection means. And a determination means for determining the state of the automatic inspection mode. 9. The emergency lighting device according to claim 8, further comprising a determination unit that determines a power failure time when the inspection sequence unit is not in the automatic inspection mode. 10. The emergency lighting device according to claim 8, further comprising a determination unit that determines a power failure pattern including a power failure time and a power supply time when the check sequence unit is not in the automatic check mode. 11. A lighting means for supplying electric power from a commercial power source to light a lamp, a charging means connected to the commercial power source for charging a battery, and a power supply from the commercial power source and the battery to the lamp. In the emergency lighting device having a control means for controlling, the control means detects the battery terminal voltage after battery replacement, comparison means for comparing the battery terminal voltage with a set value, and the comparison means. An emergency lighting device comprising: a display unit that displays whether or not the battery should be replaced based on the result.