JPH09260070A - Emergency lighting apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easy attachable emergency lighting apparatus. SOLUTION: After the assembly including the insertion of battery B, the capacitors C12, C13 are not charged and the triac Q11 is off. The discharging path of the battery B is not formed so that the fluorescent lamp FL cannot be turn on. When connecting to the utility power E and operating the test switch SW1, the light emitting diode LED11 emits lights, turning on a phototransistor PTr11, then turning on the triac Q11 to form the discharging path of the battery B. When the black out of the AC utility power E occurs, the current through the relay coil RyL stops, then the relay contact RyS3 closes to connect the battery B to the inverter 3. Once connecting the AC utility power E, since the capacitors C12, C13 are charging, the thyristor Q12 and the triac Q11 continue to turn on to form the discharging path of the battery B to high frequency turn on the fluorescent lamp FL.

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 that performs switching operation according to a power failure and a non-power failure of an AC power source.

[0002]

2. Description of the Related Art As a conventional emergency lighting device, for example, a structure shown in FIG. 2 is known. The emergency lighting device having the configuration shown in FIG. 2 includes an inspection switch SW on the commercial AC power source E.
The input terminal of the ballast 1 is connected via 1 and one filament of the fluorescent lamp FL is placed between the output terminals of the ballast 1.
It is connected to FL1 and is also connected to the other filament FL2 via relay contact RyS1 and relay contact RyS2.

The commercial AC power source E has a relay coil Ry.
L is connected, the constant voltage element Z1 and the primary winding Tr11 of the transformer Tr1 are connected in parallel to the relay coil RyL, and the full-wave rectifier 2 is connected to the secondary winding Tr12 of the transformer Tr1.
The input terminal of is connected.

Further, between the output terminals of the full-wave rectifier 2,
A smoothing capacitor C1 is connected, and a series circuit of a resistor R1, a diode D1, a fuse F and a battery B is connected between both terminals of this capacitor C1.

Between both terminals of the battery B via the fuse F, a push-pull type inverter circuit 3 is connected via a relay contact RyS3. This inverter circuit 3 is an inverter transformer via the choke coil L1.
It is connected to the middle point of the input winding Tr21 of Tr2.
One end of 21 is connected to the negative pole of the full-wave rectifier 2 via the emitter and collector of the transistor Q1, and the other end of the input winding Tr21 is connected to the negative pole of the full-wave rectifier 2 via the emitter and collector of the transistor Q2. There is. A capacitor C2 and a bidirectional constant voltage element Z2 are connected in parallel to the input winding Tr21. Further, the inverter transformer Tr2 has a control winding Tr23, and one end of this control winding Tr23 is
The other end of the base of the transistor Q1 is connected to the base of the transistor Q2, the base of the transistor Q1 is connected via the resistor R2, the base of the transistor Q2 is connected via the resistor R3, and the series connection of the relay contact RyS3 and the choke coil L1 is connected. Connected to a point.

The output winding Tr22 of the inverter transformer Tr2 is connected to the filament FL1 of the fluorescent lamp FL, and is also connected to the filament FL2 of the fluorescent lamp FL via the capacitor C3 and the relay contact RyS1.

The inverter transformer Tr2 has a filament preheating winding Tr24 and a filament preheating winding Tr25. The filament preheating winding Tr24 is an output winding Tr.
22 is connected to the filament FL1 via the current limiting capacitor C4 and the relay contact RyS4, and the filament preheating winding Tr25 is connected to the filament FL2 via the current limiting capacitor C5, the relay contact RyS1 and the relay contact RyS2. It is connected.

When the commercial AC power source E is not shut down,
Since current is flowing in the relay coil RyL, each relay contact RyS1, RyS2 is connected to the ballast 1, and the relay contact RyS4 is opened. Therefore, the voltage of the commercial AC power source E is applied between the filaments FL1 and FL2 of the fluorescent lamp FL via the ballast 1 to start and light the fluorescent lamp FL.

On the other hand, the voltage is reduced by the transformer Tr1, full-wave rectified by the full-wave rectifier 2, smoothed by the capacitor C1, and the battery B is charged through the resistor R1 and the diode D1.

Since the relay contact RyS3 is open, no power is supplied to the inverter circuit 3 and it does not operate.

When the commercial AC power source E fails, no current flows in the relay coil RyL, and the relay contacts RyS1,
RyS2 is connected to the inverter circuit 3 side, and the relay contact RyS4 is closed.

Then, the DC power of the battery B is supplied to the inverter circuit 3, and the inverter circuit 3 oscillates at a high frequency to induce a high frequency AC at the output winding Tr22, and the fluorescent lamp FL.
Is turned on at high frequency. Also, filament preheating winding Tr2
A voltage is also induced in 4 and Tr25, and the current value is made almost constant by capacitors C3, C4, and C5 to preheat filaments FL1 and FL2. The output from the inverter circuit 3 is lower than the output from the ballast 1.

[0013]

However, in the case of the configuration shown in FIG. 2 described above, in a state where the battery B is connected and the commercial AC power source E is not connected, for example, during transportation,
Since the voltage of the commercial AC power supply E is not applied, no current flows in the relay coil RyL, and the relay contacts RyS1 and RyS2
Is connected to the side of the inverter circuit 3 and the relay contacts RyS3 and RyS4 are closed, and the fluorescent lamp FL lights up using the battery B as a power source.

For this reason, the battery B is removed in a state such as transportation until the commercial AC power source E is connected,
The battery B must be connected at the time of mounting, and there is a problem that the mounting work is complicated.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an emergency lighting device that can be easily mounted.

[0016]

An emergency lighting device according to claim 1 supplies electric power from this AC power supply and charges a battery with the AC power supply when the AC power supply is not in power failure, At the time of power failure, the AC power source is switched to the battery, and the direct current from the battery is controlled by controlling the switching means of the inverter circuit to be supplied after being converted into the alternating current, and the discharge lamp is lit up. It has a switching element located in between and detects an inspection operation after being connected to the AC power source, and before the inspection operation is performed, the switching element is opened and the inspection operation is performed. After that, it is equipped with a control circuit that closes the switching element. Since performed, reliably perform the operation by the battery after been inspected operatively connected to an AC power source, connected to an AC power source in the previous state to be of a checking operation, to prevent operated by battery.

The emergency lighting device according to a second aspect is the emergency lighting device according to the first aspect, which has an inspection switch for inspecting the operation by opening an AC power source, and the control circuit inspects the inspection switch. It is equipped with operation detection holding means that detects the operation and holds the detection state to close the switching means.After the inspection is performed with the inspection switch after connecting to the AC power supply, the operation detection holding means The switching means is maintained in the closed state and operated by the battery.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an emergency lighting device of the present invention will be described below with reference to the drawings. The parts corresponding to those of the conventional example shown in FIG.

The emergency lighting device having the structure shown in FIG.
The input terminal of the ballast 1 is connected to the commercial AC power source E via an inspection switch SW1 such as a pull switch having a normally-closed contact, and between the output terminals of the ballast 1, one of the fluorescent lamps FL as a discharge lamp is connected. It is connected to the filament FL1 and is also connected to the other filament FL2 via the relay contact RyS1 and the relay contact RyS2.

The commercial AC power source E has a relay coil Ry.
L is connected, the constant voltage element Z1 and the primary winding Tr11 of the transformer Tr1 are connected in parallel to the relay coil RyL, and the full-wave rectifier 2 is connected to the secondary winding Tr12 of the transformer Tr1.
The input terminal of is connected.

Further, between the output terminals of the full-wave rectifier 2,
A smoothing capacitor C1 is connected, and a resistor R1, a diode D1, a fuse F, a battery B, and a triac as a switching element are connected between both terminals of this capacitor C1.
Q11 series circuit is connected.

The operation detection holding means 11 is connected to the contact that is closed when the check switch SW1 is operated.
This operation detection holding means 11 has a diode D11, a resistor R11 and a light emitting diode LED between this contact and the side of the commercial AC power source E to which the check switch SW1 is not connected.
A series circuit of 11 is connected, and a capacitor C11 is connected between both terminals of the resistor R11 and the light emitting diode LED11. Further, the positive side of the full-wave rectifier 2 is connected to the gate of the thyristor Q12 via the phototransistor PTr11 photocoupled to the light emitting diode LED11 and the resistor R12, and the capacitor is placed between the cathode and the gate of the thyristor Q12. A parallel circuit of C12 and resistor R13 is connected. Furthermore, the anode of thyristor Q12 is connected to diode D1 via resistor R14,
The cathode of Q12 is connected to the gate of TRIAC Q11.
A parallel circuit of capacitor C13 and resistor R15 is connected,
The motion detection / holding means 11 and the triac Q11 form a control circuit 12.

A push-pull inverter circuit 3 is connected between the terminals of the fuse F, the battery B and the triac Q11 via a relay contact RyS3.
This inverter circuit 3 is connected to the midpoint of the input winding Tr21 of the inverter transformer Tr2 via the choke coil L1, and one end of this input winding Tr21 is full-wave via the emitter and collector of the transistor Q1 as switching means. It is connected to the negative pole of the rectifier 2, and the other end of the input winding Tr21 is connected to the negative pole of the full-wave rectifier 2 via the emitter and collector of the transistor Q2 as switching means. Further, a capacitor C2 and a bidirectional constant voltage element Z2 are connected to the input winding Tr21. In addition, the inverter transformer Tr2 has a control winding Tr23.
One end of 23 is connected to the base of the transistor Q1 and the other end is connected to the base of the transistor Q2. The base of the transistor Q1 is connected to the resistor R2, the base of the transistor Q2 is connected to the resistor R3, and the relay contact RyS3 and the choke coil are connected.
It is connected to the connection point of L1.

The output winding Tr22 of the inverter transformer Tr2 is connected to the filament FL1 of the fluorescent lamp FL and is also connected to the filament FL2 of the fluorescent lamp FL via the capacitor C3 and the relay contact RyS1.

The inverter transformer Tr2 has a filament preheating winding Tr24 and a filament preheating winding Tr25, and the filament preheating winding Tr24 is an output winding Tr.
22 is connected to the filament FL1 via the current limiting capacitor C4 and the relay contact RyS4, and the filament preheating winding Tr25 is connected to the filament FL2 via the current limiting capacitor C5, the relay contact RyS1 and the relay contact RyS2. It is connected.

Next, the operation of the above embodiment will be described.

First, in the assembled state including the mounting of the battery B, the capacitor C12 is not charged, the thyristor Q12 is in the off state, and the capacitor C13 is in the off state.
Is not charged and the TRIAC Q11 is off. Therefore, the discharge path of the battery B is not formed, and even if the commercial AC power source E is not connected and the relay coil RyL determines that there is a power failure, the fluorescent lamp FL does not light and the battery B is mounted after assembly. But it doesn't light carelessly.

By mounting the commercial AC power supply E, the voltage of the commercial AC power supply E is stepped down by the transformer Tr1 and rectified by the full-wave rectifier 2 to charge the capacitor C1. Then, when the inspection switch SW1 is operated in this state, the commercial AC power source E, the diode D11, the resistor R11, the light emitting diode LED11 and the commercial AC power source E are closed, and the light emitting diode LED11 emits light, whereby the phototransistor is turned on. The PTr11 is turned on, the capacitor C12 is charged, the thyristor Q12 is turned on, the capacitor C13 is charged, the triac Q11 is turned on, and the discharge path of the battery B is formed. Therefore, electric power is supplied from the battery B to the inverter circuit 3.

At the time of non-power failure of the commercial AC power source E after the commercial AC power source E is connected, current flows through the relay coil RyL, so that each relay contact RyS1, RyS2 is connected to the ballast 1. There is.

Therefore, the voltage of the commercial AC power source E is applied between the filaments FL1 and FL2 of the fluorescent lamp FL via the ballast 1 to start and light the fluorescent lamp FL.

Further, the voltage of the commercial AC power source E is set to the transformer Tr.
Step down by 1, full-wave rectifier 2 by full-wave rectification, smooth by capacitor C1, resistor R1 and diode D1 and diode
Battery B is charged via D11.

Since the relay contact RyS3 is opened, the transistor Q2 is turned off, so that no power is supplied to the inverter circuit 3 and the relay contact RyS4 is also opened. No current flows in the winding Tr24 and the capacitor C4.

On the other hand, when the commercial AC power source E fails, no current flows through the relay coil RyL, and the relay contacts RyS1,
RyS2 is connected to the inverter circuit 3 side. Further, the relay contact RyS3 is closed to connect the battery B and the inverter circuit 3, and the relay contact RyS4 is closed to connect the filament preheating winding Tr24 to the filament via the capacitor C4.
Preheat current flows to FL1. After the commercial AC power supply E is connected once, the capacitors C12 and C13 are charged, so the thyristor Q12 and the triac are connected.
The discharge path of the battery B is formed because Q11 remains on.

Then, the DC power of the battery B is supplied to the inverter circuit 3, and the inverter circuit 3 is activated and oscillates at a high frequency to induce a high-frequency alternating current in the output winding Tr22 to light the fluorescent lamp FL at a high frequency. In addition, a voltage is induced in the filament preheating windings Tr24 and Tr25, and capacitors C4 and C5
Keeps the current value almost constant by filaments FL1, FL2
To preheat. The output from the inverter circuit 3 is set lower than the output from the ballast 1.

In any of the embodiments, the same effect can be obtained by using an inverter circuit for high frequency oscillation having a rectifying circuit or the like instead of the ballast 1.

[0036]

According to the emergency lighting device of the first aspect, since the inspection operation is generally performed after being connected to the AC power source, the battery is surely operated by the battery after the inspection operation is performed by being connected to the AC power source. In the state before performing the operation and connecting to the AC power supply and performing the inspection operation, it is prevented from operating by the battery, and the battery can be connected in advance without being connected to the AC power supply, and the battery is connected at the time of mounting. This eliminates the need for the battery, prevents the user from forgetting to connect the battery, and simplifies the mounting operation.

According to the emergency lighting device of the second aspect,
In addition to the emergency lighting device according to claim 1, after the inspection switch is inspected after connecting to an AC power source, the operation detection holding means holds the switching means in a closed state to cause the battery to operate. , It is possible to prevent forgetting to connect the battery and simplify the mounting operation.

[Brief description of drawings]

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

FIG. 2 is a circuit diagram showing a conventional emergency lighting device.

[Explanation of symbols]

 3 Inverter circuit 11 Operation detection and holding means 12 Control circuit B Battery E Commercial AC power supply FL Fluorescent lamp as discharge lamp Q1, Q2 Transistor as switching means Q11 Triac SW1 as switching element Check switch

Claims (2)

[Claims] 1. When the AC power supply is not in a power failure, power is supplied from the AC power supply and the battery is charged by the AC power supply, and when the AC power supply is in a power failure, the AC power supply is switched to the battery and the DC power is supplied from the battery. In the emergency lighting device for controlling the switching means of the inverter circuit to convert into alternating current and supplying the alternating current, and lighting the discharge lamp, having an switching element positioned between the battery and the switching means, A control circuit that detects an inspection operation after being connected to an AC power source, opens the switching element before the inspection operation, and closes the switching element after the inspection operation is performed. An emergency lighting device characterized by being provided. 2. An inspection switch for opening the AC power supply to inspect the operation, wherein the control circuit detects the inspection operation of the inspection switch and holds the detection state to close the switching means. The emergency lighting device according to claim 1, further comprising detection holding means.