JP2000295788A - Emergency lighting and emergency lighting - Google Patents

Abstract

(57) Abstract: Provided are an emergency lighting device and an emergency lighting device capable of notifying a battery life and easily replacing the battery. A DC power supply, a charging circuit connected to the DC power supply for charging a battery when no power failure, a lighting circuit connected to the battery and operating using the battery as a power supply during a power failure; A lamp 5 that is lit by the lighting circuit 4; a battery determination unit 6 that switches from a non-power failure to a power failure and determines a state of battery life after a first predetermined period has elapsed; and a battery determined by the battery determination unit 6. Storage means 7 for storing the life determination state
The emergency lighting device 1 is provided with a notification unit 8 that reads out the battery life determination state from the storage unit 7 when the power failure recovers, and performs notification according to the determination state.

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 and an emergency lighting device.

[0002]

2. Description of the Related Art In emergency lighting devices such as guide lights and emergency lights, it is said that when a commercial AC power supply is interrupted, the lamp must be normally turned on by an emergency battery for a specified time. . For this reason, it is necessary to detect the capacity of the battery and check whether the battery has reached the end of its life.For example, a power failure state is forcibly generated by a manual or automatic inspection switch, the battery is discharged, and the lamp by the battery is used. Check the lighting condition. If it is determined that the battery has reached the end of its life after the inspection, the battery is replaced.

An emergency illuminating device of this kind is disclosed, for example, in Japanese Patent Application Laid-Open No. Hei 9-19084 (prior art). Then, in the emergency lighting device 30, as shown in FIG. 5, the light emitting diode LED emits light when the battery B is charged by the DC power supply 31, and does not emit light when the battery B is not charged. It is configured as follows. That is, the commercial AC power supply A
When C is in the non-power failure state, the battery B
And the transistor Q1 is turned on, and the transistor Q1, the resistor R4, and the light emitting diode LE
A current flows through the path of D and the lamp L, and the light emitting diode LED emits light. Further, when the commercial AC power supply AC is in a power failure state, no current flows through the resistor R5, so that the transistor Q1 does not turn on and the light emitting diode LED does not emit light. Further, since the resistance value of the resistor R6 is increased,
If the battery B is disconnected, no current flows through the resistor R5,
The light emitting diode LED does not emit light.

[0004]

In such an emergency lighting device of the prior art, when the battery is normally charged, an indication is made by a light emitting diode or the like. This is checked immediately after the power is forcibly stopped using the check switch.
The battery determined to have reached the end of its life has been replaced.
However, performing inspection and battery replacement for a large number of emergency lighting devices is cumbersome and labor-intensive because the battery whose life is expired is not specified and a large number of batteries need to be prepared. There are drawbacks.

[0005] It is an object of the present invention to provide an emergency lighting device and an emergency lighting device capable of notifying the battery life and easily replacing the battery.

[0006]

According to the first aspect of the present invention, there is provided an emergency lighting device connected to a DC power supply;
A charging circuit for charging the battery during a non-power failure;
A lighting circuit that is connected to the battery and operates using the battery as a power source; a lamp that is lit by the lighting circuit; a battery determination that switches from non-power failure to power failure and determines a state of battery life after a first predetermined period has elapsed. Means;
Storage means for storing a battery life determination state determined by the battery determination means;
Notification means for reading out the determination state of the battery life from the storage means and performing notification in accordance with the determination state.

In the present invention and each of the following inventions, definitions and technical meanings of terms are as follows.

[0008] The DC power supply may be anything as long as it can charge a battery, and includes, for example, those obtained by rectifying or rectifying and smoothing a commercial AC voltage and those obtained by connecting a chopper circuit to a rectifying / smoothing circuit.

The lamp may be anything, for example, an incandescent lamp, a hot cathode fluorescent lamp, a cold cathode fluorescent lamp, a rare gas discharge lamp, or the like.

The notification means may be either display or audio. The notification according to the determination state of the battery life is, for example, to make the notification when the battery is normal and the notification when the battery life is different from each other. For example, in the display, when the battery is normal, it is always lit, when the battery has reached the end of its life, it is blinked, or the display colors are different between the two. Further, in voice, sound is not generated when the battery is normal, sound is generated when the battery has reached the end of its life, or the timbre is different between the two.

The state of the battery life can be determined by any method that can determine the life of the battery. For example, the state of the battery life can be determined by detecting the lamp lighting time, detecting the battery voltage, and the like.

Switching from a non-power failure to a power failure means that the state changes from a normal state in which no power failure occurs to a power failure state. At this time, the battery is connected to the lighting circuit, and the lamp is lit by the lighting circuit. . In such a case, the battery voltage is reduced for a first predetermined period immediately after the battery is connected to the lighting circuit, for example, within a few seconds, or the battery voltage fluctuates and becomes unstable. ,
Noise may occur. For this reason, the battery determination means determines the state of the battery life after the first predetermined period has elapsed.

According to the present invention, the battery determining means switches from the non-power failure to the power failure and determines the state of the battery life after the first predetermined period has elapsed, and the notifying means determines the battery life from the storage means. Since the state is read and the notification is performed according to the determination state, the reliability of the determination of the battery life is improved, and the battery can be easily replaced based on the notification according to the determination state of the battery life.

According to a second aspect of the present invention, in the emergency lighting device according to the first aspect, the battery judging means detects the battery voltage, and after the second predetermined period, the battery voltage becomes the predetermined voltage. At this time, the battery is determined to be normal, and when the battery voltage falls below a predetermined voltage, the battery is determined to have expired.

According to the present invention, the battery determination means detects the battery voltage and makes the determination using the predetermined voltage as the reference voltage, so that the battery life can be easily determined.

According to a third aspect of the invention, there is provided an emergency lighting device according to the first or second aspect.
The battery determination means resets the determination state of the battery life when the battery is detached.

According to the present invention, the battery judgment means resets the judgment state of the battery life when the battery is detached, so that the battery state is automatically notified when the battery is replaced. Can be.

According to a fourth aspect of the present invention, there is provided an emergency lighting device comprising: the emergency lighting device according to any one of the first to third aspects; and a lighting device main body provided with the emergency lighting device. I have it.

The emergency lighting device may be any emergency lighting device including the emergency lighting device of the present invention, such as a guide light embedded in a wall, and a lighting device main body provided with the emergency lighting device. .

According to the present invention, it is possible to provide an emergency lighting device provided with an emergency lighting device capable of easily confirming the battery life by the notification means.

[0021]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

FIG. 1 is a circuit diagram of an emergency lighting device according to a first embodiment of the present invention. In the figure, 1 is an emergency lighting device, 2 is a DC power supply, 3 is a charging circuit, 4 is a lighting circuit, 5 is a lamp, 6 is a battery determination unit, 7 is a storage unit, and 8 is a notification unit.

In FIG. 1, a rectifier D is connected to a commercial AC power supply Vs via a normally closed switch SW1 and a transformer Tf.
The input terminal of B1 is connected, and a smoothing capacitor C1 is connected between the output terminals of the rectifier DB1. Rectifier D
B1 and the smoothing capacitor C1 rectify and smooth the AC voltage supplied from the commercial AC power supply Vs. Commercial AC power supply V
s, the rectifier DB1, and the smoothing capacitor C1 constitute the DC power supply 2, and the voltage across the smoothing capacitor C1 forms the output voltage of the DC power supply 2.

The switch SW1 may be either a manual switch or an automatic switch. When the switch SW1 is turned on (open), the electrical connection between the commercial AC power supply Vs and the rectifier DB1 is cut off. That is, the switch SW1 forcibly causes a power failure. The transformer Tf steps down the AC voltage of the commercial AC power supply Vs and inputs the stepped voltage to the input terminal of the rectifier DB1. The voltage ratio of the transformer Tf is appropriately set according to the rating characteristics of the lamp 5 described later.

Between the switch SW1 and the transformer Tf, a relay coil of a relay Ry1 as a power failure detection means is connected between the input winding Tf1 of the transformer Tf. The relay Ry1 is energized by the commercial AC power supply Vs at the time of non-power failure, but is deenergized by a power failure of the commercial AC power supply Vs or an on operation of the switch SW1. Relay Ry1
Is for detecting a power failure to the DC power supply 2.

A charging circuit 3 and a relay Ry are connected to the output side of the DC power supply 2, that is, both ends of the smoothing capacitor C1.
The battery B1 is connected via one relay contact Ry1-a, Ry1-c. The positive electrode of the battery B1 is connected to the common contact Ry1-c of the relay Ry1, and the negative electrode is connected to the negative terminal of the DC power supply 2. During a non-power failure, the relay Ry1 is energized, so that the common contact Ry1-c and the normally open contact Ry1-a are connected, and the battery B1 is charged by the DC power supply 2. The charging circuit 3 includes a resistor R1.

Further, at both ends of the smoothing capacitor C1,
A normally closed contact Ry2-b of a relay Ry2 described later, a PNP transistor Tr as a switch element, and a current limiting resistor R3
And a series circuit of light emitting diodes LED. The base of the transistor Tr is connected to the normally open contact Ry1-a of the relay Ry1 via the base resistor R4. At the time of no power failure, a DC voltage is generated across the smoothing capacitor C1. Then, current flows from the positive terminal of the smoothing capacitor C1 to the normally open contact Ry1-a side of the relay Ry1 via the normally closed contact Ry2-b, the emitter and the base of the transistor Tr, and the base resistor R4 to turn on the transistor Tr. . When the transistor Tr turns on,
From the positive terminal of the smoothing capacitor C1 to the normally closed contact Ry2-
b, current flows through the emitter and collector of the transistor Tr, the current limiting resistor R3, the light emitting diode LED, and the negative terminal of the capacitor C1, and the light emitting diode LED emits light. Since the battery B1 is charged by the DC power supply 2 at the time of no power failure, the light emission of the light emitting diode LED indicates that the battery B1 is charged by the DC power supply 2.

A lighting circuit 4 is connected to the battery B1 via a common contact Ry1-c and a normally closed contact Ry1-b of the relay Ry1, and a fluorescent lamp 5 as a lamp is connected to an output side of the lighting circuit 4. Have been. The lighting circuit 4 is, for example, a high-frequency lighting circuit that outputs high-frequency power,
When y1 is deenergized, the common contact Ry1-c and the normally closed contact R
y1-b is connected and connected to battery B1. During the period when the relay Ry1 is deenergized, that is, at the time of a power failure,
The lighting circuit 6 operates using the battery B1 as a power source to turn on the fluorescent lamp 7.

Both terminals of the battery B1 are connected to input terminals of a battery determination circuit 6 as battery determination means. That is, the battery determination circuit 6 detects the battery voltage of the battery B1. The battery determination circuit 6 includes a timer T1 and a relay contact (not shown) of the relay Ry1. Then, when the relay Ry1 is deenergized, that is, when the power is switched from the non-power failure to the power failure, the timer T1 starts measuring the time by the operation of the relay contact of the relay Ry1. Then, the battery determination circuit 6 is configured to determine the battery voltage after the first predetermined period elapses without determining the battery voltage during the first predetermined period (for example, 3 seconds). .

Since the first predetermined period is immediately after the battery B1 is electrically connected to the lighting circuit 4, the battery voltage may drop, or the battery voltage may fluctuate or become unstable. Noise may occur, which may cause the battery determination circuit 6 to determine that the battery B1 has reached the end of its life. Therefore, when the battery life state is determined after the first predetermined period has elapsed, the battery determination circuit 6 may erroneously detect the battery voltage of the battery B1, or the battery determination circuit 6 itself may malfunction. Can be avoided.

As shown in FIG. 2, the battery determination circuit 6 determines that the battery B1 is normal when the battery voltage is equal to or higher than a predetermined voltage after a second predetermined period (for example, 25 minutes), and the battery voltage is determined to be normal. Battery B when voltage falls
1 is determined as the life. Also, the second
Even when the battery voltage falls below the predetermined voltage, the battery B1 is determined to have reached the end of its life.

As described above, the battery determination circuit 6 as the battery determination means switches from non-power failure to power failure and determines the state of the battery life after the first predetermined period has elapsed. The battery determination circuit 6 is configured to reset the determination state of the battery B1 when the battery B1 is detached, that is, to make the battery B1 normal. Although not shown, the battery determination circuit 6 is supplied with power from the DC power supply 2 during a non-power failure, and is supplied with power from a built-in backup power supply during a power failure.

The battery life determination state determined by the battery determination circuit 6 is stored in a non-volatile memory 7 as storage means. The nonvolatile memory 7 includes a battery B
1 normal (for example, “00”), life (for example, “0”)
1 ") is stored. The nonvolatile memory 7 is overwritten and stored each time the battery determination circuit 6 determines the state of the battery life. Therefore, when battery B1 is detached, battery B1 is stored as normal.

The determination state of the battery life stored in the non-volatile memory 7 as the storage means, that is, the normality or the life of the battery B1 is read by the control circuit 9. The control circuit 9 has its power supply terminal connected to both ends of the smoothing capacitor C1 and operates by being supplied with power from the DC power supply 2. In addition, a battery (not shown) is provided inside, and the power is supplied by the battery during a power failure to operate. The control circuit 9 includes a CP (not shown).
Microcomputer and relay Ry with U, ROM, RAM, etc.
2 and the like. Further, a relay contact (not shown) of the relay Ry1 is provided to detect a power failure and release of the power failure. Then, when the power outage is released, the battery life determination state stored in the nonvolatile memory 7, that is, the normal state of the battery B1 (for example, “0”)
0 ") or the life (for example," 01 ") is read out, and notification is performed according to the determination state. That is, battery B
If 1 is normal, the relay Ry2 is deactivated. Then, the light emitting diode LED maintains the lighting state at all times.
When the battery B1 has reached the end of its life, the relay Ry2 is energized at predetermined intervals, for example, at one-second intervals. Then, the light-emitting diodes LED blink at predetermined intervals, for example, at one-second intervals. The control circuit 9, the light emitting diode LED, and the like form a notification unit 8.

When the light emitting diode LED is blinking, the battery B1 has reached the end of its life and the battery B1 is replaced. When the battery B1 is detached from the emergency lighting device 1, the battery determination circuit 6 resets the determination state of the battery B1 and makes the battery B1 normal. Thereby, the normality of the battery life is stored in the nonvolatile memory 7, and the normal display of the battery B1 can be automatically performed on the light emitting diode LED.

As described above, the battery determination circuit 6
Since the battery life is determined after the elapse of the first predetermined period, erroneous detection or malfunction of the battery voltage is prevented, and highly reliable determination can be performed.

The notifying means 8 reads the battery life determination state of the battery B1 stored in the non-volatile memory 7, and if the battery B1 is normal, causes the light-emitting diode LED to be constantly turned on. When B1 has reached the end of its life, the light emitting diode LED is made to blink, so that the life of the battery B1 can be easily confirmed and the battery can be replaced.

Further, when the battery B1 is detached from the emergency lighting device 1, the battery determination circuit 6
Since the determination state of 1 is reset to make the battery B1 normal, it is possible to automatically display the normal state of the battery B1 at the time of battery replacement.

Next, a second embodiment will be described.

FIG. 3 is a sectional view of an emergency illuminating device showing a second embodiment of the present invention, and FIG. 4 is a perspective view showing the same external appearance. The same parts as those in FIG. 1 are denoted by the same reference numerals, and description thereof will be omitted.

The emergency lighting device 10 shown in FIGS. 3 and 4 is a guide light. In FIG. 3, the emergency lighting device 1 shown in FIG. In the figure,
Reference numeral 7 denotes a straight tube-type fluorescent lamp, B1 denotes a battery, and LED denotes a light emitting diode. 12 denotes a lighting unit obtained by removing the fluorescent lamp 7, the battery B1, and the light emitting diode LED from the emergency lighting device 1. .

The lighting device body 11 has a light-transmitting opening 13
The emergency lighting device 1 shown in FIG. 1 is disposed inside the box-shaped body 14, and a frame-shaped frame 15 can be opened and closed on the front side of the box-shaped body 14. Around the frame 15, a protruding wall 16 whose tip abuts against a wall or the like.
have. A translucent panel 17 is supported on the inner surface side of the frame 15, and the translucent panel 17 has a guide display 18.
And covers the light-transmitting opening 13 of the box-shaped body 14.

Further, a reflecting portion 19 is provided on the frame 15 to face the light emitting diode LED when the frame 15 is closed.
5, is integrally attached to the support member 20 provided in
A light guide hole 21 is formed in the lower surface of the frame 15.

Then, as shown in FIG. 4, the lighting device main body 11 is embedded in a wall surface 23 such as the evacuation opening 22 to display the evacuation opening 22.

When the battery B1 is normal, the light emitting diode LED is constantly lit, and when the battery B1 has reached the end of its life, the emergency lighting device 10 that can replace the battery is provided by the notification means 8 in which the light emitting diode LED blinks. be able to.

[0046]

According to the first aspect of the present invention, the battery determining means switches from non-power failure to power failure and determines the state of battery life after a first predetermined period has elapsed. Read the battery life judgment status from
Since the notification according to the determination state is performed, the reliability of the determination of the battery life is improved, and the battery can be easily replaced based on the notification according to the determination state of the battery life.

According to the second aspect of the present invention, since the battery determination means detects the battery voltage and makes the determination using the predetermined voltage as the reference voltage, the battery life can be easily determined.

According to the third aspect of the present invention, the battery determination means resets the determination state of the battery when the battery is detached, so that the battery is automatically notified of normality when the battery is replaced. be able to.

According to the fourth aspect of the present invention, it is possible to provide an emergency lighting device provided with an emergency lighting device capable of easily confirming the battery life by the notification means.

[Brief description of the drawings]

FIG. 1 is a circuit diagram of an emergency lighting device according to a first embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a determination of a battery life based on a battery voltage.

FIG. 3 is a cross-sectional view of an emergency lighting device according to a second embodiment of the present invention.

FIG. 4 is a perspective view showing the appearance.

FIG. 5 is a circuit diagram of a conventional emergency lighting device.

[Explanation of symbols]

 B1 Battery 1 Emergency lighting device 2 DC power supply 3 Charging circuit 4 Lighting circuit 5 Fluorescent lamp as lamp 6 Battery determining circuit as battery determining means 7 as storage means Non-volatile memory 8: Notification means 10: Illumination device 11: Illumination device body

Claims (4)

[Claims] 1. A DC power supply; a charging circuit connected to the DC power supply and charging the battery when there is no power failure; a lighting circuit connected to the battery and operating using the battery as a power supply during a power failure; A lamp; battery switching means for switching from a non-power failure to a power failure and determining a state of battery life after a first predetermined period has elapsed; and storage means for storing a battery life determination state determined by the battery determination means. An emergency lighting device comprising: a notifying unit that reads a battery life determination state from a storage unit when a power failure is released, and performs notification according to the determination state. 2. The battery determination means detects a battery voltage, determines that the battery is normal when the battery voltage is equal to or higher than a predetermined voltage after a second predetermined period, and determines that the battery has expired when the battery voltage falls below the predetermined voltage. The emergency lighting device according to claim 1, wherein the emergency lighting device is used. 3. The emergency lighting device according to claim 1, wherein the battery determination means resets a battery life determination state when the battery is removed. 4. An emergency lighting device comprising: the emergency lighting device according to claim 1; and a lighting device main body provided with the emergency lighting device. apparatus.