JPH08264010A - Emergency light device - Google Patents

Abstract

PURPOSE: To automatically turn on an emergency light without modifying a general lighting system, which can turn on and off a lighting lamp from a remote place with a power source switch, by adding a storage battery, a charging circuit, a detecting circuit and a switching circuit for lighting at emergency service interruption. CONSTITUTION: An emergency light device is connected to a commercial power source 5 through a power source switch 6. Impedance between Z1 and Z2 is detected by using an emergency lamp 3, a storage battery 7, a charging circuit 2 and the power of the storage battery 7. The device is formed of an impedance detecting circuit 4 for driving a relay 1 to turn on the emergency lamp 3 in the case of a low impedance and for turning off the emergency lamp 3 in the case of a high impedance and a relay 10 for switching the connection between the impedance detecting circuit 4 and the charging circuit 2 at the time of service interruption and non-interruption. Stabilized automatic lighting at the time of emergency service interruption can be thereby realized without modifying a power source switch and the alternating current power source wiring.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency light device that lights up in the event of a power failure and a lighting device equipped with the emergency light device.

[0002]

2. Description of the Related Art Most conventional emergency light devices are composed of a lighting lamp, a storage battery, a charging circuit, and switches that are turned on or off in the event of a power failure or non-power failure. At times, the illumination lamp was turned on by the power of the storage battery.

Alternatively, there is a power failure detection circuit that detects the power failure when the commercial power source fails and switches the lamp from the commercial lighting circuit to the emergency lighting circuit for emergency lighting. The power failure detection circuit and the commercial lighting circuit are provided. Is connected to the commercial power supply via the power switch, and an impedance element is connected in parallel to the power switch, and the impedance value of this impedance element is used for the lamp of the commercial lighting circuit when the commercial power supply is not interrupted and the power switch is open. It was characterized by setting a value that does not turn on the lighting and connecting the power failure detection circuit to the commercial lighting circuit side regardless of the opening and closing of the power switch when the commercial power supply is in a non-power failure state. . (See Japanese Laid-Open Patent Publication No. 54-69736)

[0004]

Among the above emergency lighting devices, the former is used in combination with a lighting device capable of lighting or extinguishing the lighting lamp from a remote place by a power switch connected to the commercial power line. Problems arise when incorporated into the lighting device. In such a case, a lighting lamp (here, the lighting lamp of the lighting device is called a lighting lamp, and the lighting lamp of the emergency lighting is called an emergency lighting lamp in order to distinguish the lighting lamp of the lighting device from the lighting lamp of the emergency lighting) Even when the power is cut off by the power switch to turn off the light, the emergency light lamp is turned on by the contact operation of the switches that are turned on or off at the time of power failure or non-power failure as in the case of power failure.

In the latter case, although the above problem can be solved, an impedance element must be connected in parallel to a power switch connected between the emergency light device and the commercial power source, and such an AC power line cannot be connected. The wiring must be carried out by a qualified electrician in accordance with the regulations of the building, and the construction costs therefor can easily exceed the costs of the emergency light equipment.

According to the present invention, when the emergency light device is used in combination with a lighting device capable of turning on or off the lighting lamp from a remote place by a power switch connected to a commercial power line, or is incorporated in the lighting device, An emergency light device that can light an emergency light lamp only when there is a power failure without connecting an impedance element in parallel to the power switch and without turning on the power supply by the power switch. Is provided.

[0007]

The emergency light device of the present invention comprises:
An impedance detection circuit that allows current to flow from the storage battery to the commercial power supply line connected to the emergency light device during a power failure, detects the impedance between the commercial power supply lines based on the amount of current, and turns on the emergency light lamp only when the impedance is low It is characterized by having.

Due to this feature, when the emergency light device is used in combination with a lighting device capable of turning on or off the lighting lamp from a distant place with a power switch connected to a commercial power line, or when incorporated in the lighting device, the power switch It is possible to light the emergency light lamp only at the time of power failure without connecting the impedance element in parallel with the power supply switch and without turning on the emergency light lamp when the power supply is cut off by the power switch.

[0009]

The operation principle of the present invention will be described with reference to FIG. In FIG. 1, the emergency light device is connected to a commercial power supply 5 via a power switch 6. The emergency light device detects the impedance between Z1 and Z2 by using the electric power of the emergency light lamp 3, the storage battery 7, the charging circuit 2, and the storage battery 7. When the impedance is low, the relay 1 is driven to turn on the emergency light lamp 3. It is composed of an impedance detection circuit 4 for turning on the light and for turning off the emergency lamp 3 in the case of high impedance, and a relay 10 for switching the connection to the impedance detection circuit 4 or the charging circuit 2 at the time of power failure or non-power failure.

The surge absorber 12 located in series with the relay 10 has a characteristic that the internal impedance is very small with respect to the high voltage of the commercial power source and the internal impedance is very large with respect to the low voltage E of the storage battery 7. It is a thing.

When there is no power failure and the power switch 6 is closed, that is, when commercial power is being supplied to the emergency light device, the relay 10 is in the operating state and the contact 9 is connected to the ON side.
The storage circuit 7 is charged by the charging circuit 2. Since the impedance detection circuit 4 and the commercial power supply line are separated by the contact 9, the impedance between Z1 and Z2 becomes almost infinite,
The impedance detection circuit 4 stops the relay 1 and
The emergency light lamp 3 is turned off.

When there is no power failure and the power switch 6 is open, that is, when commercial power is cut off by the power switch 6, the relay 10 is in a stop state and the contact 9 is OF.
It is switched and connected to the F side. Since the power switch 6 is open,
The impedance between Z1 and Z2 is the surge absorber 12
It becomes only the impedance of. Since the internal impedance of the surge absorber 12 is very large with respect to the low voltage E, the impedance between Z1 and Z2 is high,
As in the case of non-power outage, the emergency light lamp 3 is not lit.

At the time of power failure, when the power switch 6 is closed,
That is, when the commercial power is cut off due to a power failure, the relay 10 is stopped and the contact 9 is switched and connected to the OFF side. Here, the commercial power supply line is an outdoor step-down transformer provided on a power pole around a house or building.
It is connected to the next side. Since the secondary side internal impedance of the transformer is very low, the impedance between Z1 and Z2 is low, and the impedance detection circuit 4 uses the relay 1
The emergency light lamp 3 is turned on by the electric power of the storage battery 7.

Since there is no particular importance when the power switch 6 is open at the time of a power failure, the description thereof is omitted here.

The operating principle of the impedance detection circuit 4 will be described in more detail with reference to FIG. The current I tries to flow from Z1 toward the commercial power source due to the voltage E of the storage battery 7,
When the contact 9 is connected to the ON side, it becomes zero. Further, when the contact 9 is connected to the OFF side and the power switch 6 is open, only the current flowing through the surge absorber 12 is present. The current amount at this time is I1. Further, the current I when the power switch 6 is closed and the contact 9 is connected to the OFF side is almost the amount flowing to the commercial power source because the internal impedance of the commercial power source is very low.
The current amount at this time is I2. The relationship between I1 and I2 is Equation 1. The values of the resistors 15 and 16 are set so that the transistor 14 is not driven at I1 but is driven at I2, so that the transistor 14 has the contact 9 connected to the OFF side and the power switch 6 is closed. The relay 1 can be activated by driving only when.

[0016]

(1) I1 << I2

The resistors 15 and 16 are simultaneously connected to the diode 1
Together with 7 and 18, they also serve to protect the impedance detection circuit 4 from the high voltage of the commercial power supply when the contact 9 is switched.

As described above, the present invention utilizes the fact that the internal impedance of the commercial power source is very small and the impedance ratio when the power switch is opened or closed is very large.

[0019]

[Embodiment 1] A concrete embodiment in which the present invention is used in combination with a fluorescent lamp lighting device 22 which is a typical lighting device will be described with reference to FIG. The fluorescent lamp lighting device 22 is connected in parallel with the charging circuit 2 behind the contact 9. Fluorescent lamp lighting device 22
Is a fluorescent lamp 19, a ballast 21, and a glow lamp 28.
It is a fluorescent lamp for general households.

When there is no power failure, the power switch 6 is switched and connected to the fluorescent lamp lighting device 22 when it is closed and to the impedance detection circuit 4 when it is open by the contact point 9. Therefore, the fluorescent lamp 19 is switched by the power switch 6. Can be turned on or off. At this time, as described in FIG. 1,
Regardless of whether the power switch 6 is open or closed, the emergency light lamp 3
No lighting. During a power failure, when the power switch 6 is closed, the impedance between Z1 and Z2 becomes low, and the impedance detection circuit 4 activates the relay 1 and the emergency light lamp 3 is lit by the power of the storage battery 7.

When the power switch 6 is open due to a power failure, the relay 10 is in a stopped state, so the contact 9 is switched and connected to the impedance detection circuit 4. Since the power switch 6 is open, the impedance between Z1 and Z2 is only the impedance of the surge absorber 12. Since the internal impedance of the surge absorber 12 is very large with respect to the low voltage E, the impedance between Z1 and Z2 becomes high, and the emergency lamp 3 does not light.

However, this is not a problem. Since the fluorescent lamp 19 is artificially turned off by the power switch 6, it is not necessary to dare to turn on the emergency lamp 3.

Further, as shown in FIG. 5, the relay 1 for lighting the emergency lamp 3 and the contact 8 thereof may be eliminated and the lighting may be carried out directly by a transistor. In this case, the number of relay parts can be reduced.

[0024]

[Embodiment 2] A concrete embodiment of the present invention in which the same fluorescent lamp 19 is used as both a commercial lamp and an emergency lamp will be described with reference to FIG. The fluorescent lamp 19 is connected to the rear of the contact 9 in parallel with the charging circuit 2 via a ballast 21 in order to be turned on from the commercial power supply 5. At the same time, the storage battery 7 is also connected to the storage battery 7 via an inverter 27 for lighting the storage battery 7. The connection between the commercial power source and the storage battery is switched at the contacts 24, 25 and 26.

When there is no power failure, the power switch 6 is switched and connected to the fluorescent lamp lighting device when it is closed and to the impedance detection circuit 4 when it is open by the contact 9. Therefore, the fluorescent lamp 19 is switched by the power switch 6. It can be turned on or off. At this time, as described with reference to FIG. 1, the relay 1 is in the stop state regardless of whether the power switch 6 is opened or closed. Therefore, the contact 24 is to the ballast 21 side and the contact 25 is
The glow lamp 28 is switched and connected, the contact 26 is opened, the fluorescent lamp 19 is disconnected from the storage battery 7, and the connection from the commercial power source is possible.

At the time of power failure, when the power switch 6 is closed, the impedance between Z1 and Z2 is low, and the relay 1 is in the active state. Therefore, the contacts 24, 25, and 26 are switched and connected in the opposite manner to that in the non-power outage, and the fluorescent lamp 19 is turned on by the power of the storage battery 7.

When the power switch 6 is open at the time of power failure, the relay 10 is in a stopped state, so that the contact 9 is switched and connected to the impedance detection circuit 4. Power switch 6
Is open, the impedance between Z1 and Z2 is only the impedance of the surge absorber 12. Since the internal impedance of the surge absorber 12 is very large with respect to the low voltage E, the impedance between Z1 and Z2 is high, and the relay 1 is stopped. Therefore, the contact 24 is connected to the ballast 21 side, and the contact 25 is connected to the glow lamp 2
8 is switched and connected, the contact 26 is opened, the fluorescent lamp 19 is disconnected from the storage battery 7, and is in a connection state in which lighting from a commercial power source is possible. However, since the power is not distributed to the commercial power source due to the power failure, the fluorescent lamp 19 is not lit.

However, this is not a problem. Since the fluorescent lamp 19 is artificially turned off by the power switch 6, it is not necessary to dare to turn on the fluorescent lamp 19. Two examples have been shown above.

[0029]

As described above, the present invention can provide an emergency light device that does not light up when the power supply is artificially shut off by the power switch and can light up only during a power failure as described above. It can be easily used together with the lighting device which is widely used in general households and can be turned on and off by a wall switch, or can be incorporated into the above lighting device. Further, since there is no need to carry out indoor wiring work or wall switch modification at all, an inexpensive emergency light device can be provided.

[Brief description of drawings]

FIG. 1 is an emergency light device connected to a commercial power source via a power switch.

FIG. 2 is a diagram illustrating an impedance detection circuit in detail.

FIG. 3 is an illumination device that uses both a fluorescent light illumination device and an emergency light device.

FIG. 4 is a lighting device in which a fluorescent lamp is used for both illumination and emergency.

FIG. 5 is a circuit for lighting an emergency light lamp directly with a transistor without a relay.

[Explanation of symbols]

 2 Charging circuit 3 Emergency light lamp 4 Impedance detection circuit 5 Commercial power supply 6 Power switch 7 Storage battery 12 Surge absorber 19 Fluorescent lamp 21 Ballast 22 Fluorescent lighting device 27 Inverter 28 Glow lamp

Claims (3)

[Claims] 1. A lighting circuit, a storage battery, and a charging circuit for charging the storage battery, switches that are turned on or off in the event of a power failure or non-power failure, and a current is supplied from the storage battery to a commercial power supply line to connect between the commercial power supply lines. An emergency light device having an impedance detection circuit for detecting impedance and turning on or off a lighting lamp, and lighting the lighting lamp at the time of power failure and low impedance. 2. The emergency light device according to claim 1, a commercial lighting circuit, and a commercial light lamp, wherein the commercial light lamp is lit by the commercial lighting circuit when there is no power failure, and the emergency light is provided during a power failure and low impedance. An illuminating device characterized by turning on an illumination lamp of the device. 3. A lighting circuit, a storage battery, and a charging circuit for charging the storage battery, switches that are turned on or off in the event of a power failure or non-power failure, and a current is supplied from the storage battery to the commercial power supply line to connect between the commercial power supply lines. It has an impedance detection circuit that detects the impedance and switches the connection between the commercial lighting circuit and the emergency lighting circuit.When there is no power failure, the commercial lighting circuit lights the above-mentioned lighting lamp as a commercial light lamp. A lighting device, wherein the lighting lamp is turned on as an emergency lamp by an emergency lighting circuit.