JPS5816066Y2 - Evacuation guidance device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an evacuation guidance device that provides evacuation guidance different from normal evacuation guidance in an emergency.

BACKGROUND ART Recently, evacuation guidance devices suitable for use in hospitals, theaters, etc. have been proposed that have different operating modes for normal and emergency situations.

For example, in an internally illuminated evacuation guidance system in which a sign board with guidance information installed on the outside of the equipment body is illuminated from behind by a lamp inside the equipment body, the brightness of the display surface is always sufficient to ensure a good night's sleep for observers or spectators. It has been proposed that the lamps be dimmed to provide guidance so as not to obstruct viewing, and that in the event of an emergency, all lamps would be turned on so that the display would be clear.

Such a device has a plurality of actuating devices within the instrument body, each of which operates the main body in a different manner, and
It has a switching device that switches between these operating devices at all times and in response to emergencies, and by this switching device, the normal operating mode is switched to the emergency operating mode in an emergency.

In many of these types of devices, the switching device is controlled by a control signal from a signal generator outside the main body of the device, which is configured to operate in conjunction with a normally closed contact of a fire alarm shifting device, for example. There is.

To explain further, the switching device is, for example, a relay, a power source for energizing the relay, and a signal generating device linked to the information transfer device in the power supply path of the relay, and the relay is normally operated by the power source. When the normally closed contact of the fire alarm transfer device opens, the signal generator generates a control signal, de-energizes the relay, and changes the operating mode to the emergency mode. It is intended to switch to that of .

Therefore, in the case of an emergency, the above-mentioned conventional device can automatically switch the operating mode in conjunction with a fire alarm or the like.

By the way, with this conventional device, if the line between the switching device and the signal generator is short-circuited in an emergency such as a fire, the switching device will continue to be energized by the power supply and the operating mode of the appliance body will not be switched. In some cases, even in times of emergency, the equipment remained in its normal operating state and was unable to fulfill its initial purpose.

Therefore, even if the above-mentioned short-circuit accident occurs, it is required to reliably switch to the emergency operating mode.

There was also a need to protect the power supply from overcurrent flowing due to the short circuit accident.

The present invention was developed in consideration of the above circumstances, and even if the line between the switching device and the signal generator is short-circuited, the operating mode can be reliably switched to the emergency operating mode, and the switching device can be switched to the emergency operating mode. It is an object of the present invention to provide an evacuation guidance device whose energizing power source is not adversely affected by overcurrent.

The present invention is characterized in that a protection device is provided in series between the switching device and the power source that energizes the switching device, and when the above-mentioned short circuit occurs, the protection device cuts off the above-mentioned power source. .

Hereinafter, details of the present invention will be explained with reference to illustrated embodiments.

FIG. 1 shows an embodiment of the present invention. 1 is a main power source, for example, a commercial AC power source.

Reference numeral 2 denotes a main body that is energized from this main power source 1.

In this embodiment, the main body 2 includes a sign board (not shown) with a guidance display on its outer surface.

) and a lamp 3 that illuminates the sign board from behind.
This is the so-called internal illumination type.

For example, the main body 2 operates in such a manner that the lamp 3 is dimmed and lit for guidance display at normal times, and in an emergency, the lamp 3 is fully lit (luminous flux ratio 100%).
The mode of operation differs between normal and emergency situations, such as the mode of operation in which guidance is displayed.

To further explain the main body 2, the lamp 3 is a discharge lamp such as a fluorescent lamp, and is supplied with power from the main power source 1 when the main power source 1 is in a normal state.

That is, the main power supply 1, the switching contacts S21, which will be described later. A ballast device 4 and the lamp 3, which will also be described later, are connected in series to form a discharge circuit.

The ballast device 4 includes a dimming lighting ballast 4-1 and a full lighting ballast 4-2 connected in parallel, and the switching contact S21 normally switches the dimming ballast 4-1 to the In an emergency, the operating mode of the main body 2 is changed by inserting the full lighting ballasts 4-2 into the discharge circuits.

The main body 2 also has a transformer 5 for heating the filament of the lamp 3, which is connected to the main power source 1 with a negative winding 5-d in parallel with the discharge circuit.

Secondary winding 5-b of this transformer 5. 5-b are connected between the ends of the filaments f and f of the lamp 3, respectively.

A lamp starting device 6 is provided between the non-power supply side terminals of the filaments f and f.

The starting device 6 may be a lighting tube or a starting circuit including a semiconductor switching element.

The main body 2 also incorporates an emergency power supply device 7 that supplies power to the lamp 3 in place of the main power supply 1 when the main power supply 1 is out of power or when a voltage drop occurs. .

This emergency power supply device 7 consists of a storage battery 8, a rectifier 9, a charging circuit 11 such as a current limiting resistor 10, and when the main power supply 1 is in a normal state, it is connected to the main power supply 1 via a charging I/lance 12. The battery is continuously charged.

Note that an emergency lighting device 13 consisting of a transistor inverter or the like is provided between the emergency power supply device 7 and the lamp 3.

A switching relay 14 is connected between both ends of the main power source 1, for example, in parallel with the primary winding 12-a of the charging transformer 12.
excitation coil Ry1 is connected, and this contact S 1
1. S12 is inserted into the discharge circuit, and another contact S13 is inserted into the circuit for energizing the lamp 3 from the emergency power supply 7.

These contacts S11. S12 and S13 are designed so that while the excitation coil Ry is excited, that is, when the main power supply 1 is in a normal state, S11 and S12 are closed and S13 is opened, and the excitation coil Ry is When the magnet is no longer excited, that is, when the main power supply 1 is out of power, Sll and S12 are opened and 313 is closed.

Next, 16 is an auxiliary power source.

15 is a switching device provided in the main body 2, and
It is energized by the auxiliary power source 16 and switches the operating mode of the main body 2 in an emergency or when the energization by the auxiliary power source 16 is stopped.

That is, in this embodiment, the switching device 15 is a relay having the switching contact S21, and the auxiliary power source 16 is also used by the main power source 1.

The excitation coil Ry□ of the switching device 15 is energized from the auxiliary power source 16 via the step-down transformer 17 and the rectifier circuit 18, which are connected in parallel with the discharge circuit, the filament heating transformer 5, and the like.

19 is a signal generator, which is provided outside the main body 2 and in the power supply path of the switching device 15 by the auxiliary power source 16;
It generates a signal to control the switching device 15 in an emergency.

In this embodiment, it is composed of a current limiting resistor 20, which will be described later, and has connection terminals 21, 22, 23, and 24.

This signal generator 19 is a fire alarm (not shown) having a normally closed contact 25.

) and the respective connection terminals 23 and 24.
and 27 and 28 are connected in series with the transmission line L2, and generate a signal for controlling the switching device 15 in conjunction with the normally closed contact 25.

Note that the connection terminals 21 and 22 of the signal generator 19 are connected to the main body 2.
The connection terminals 29 and 30 provided on the respective transmission lines L3
．． It is connected by L4.

That is, in the switching device 15, at all times, current flows through the path of the one-pole switching device 15 of the auxiliary power source 16 - the normally closed contact 25 - the signal generator 19 - the other pole of the auxiliary power source 16, and the excitation coil Ry2 is excited. , the switching contact S21
Connect to the ballast device 40 dimming lighting ballast 4-1 side,
In an emergency, the normally closed contact 25 is opened by activation of the fire alarm, and the excitation coil Ry□ is deenergized to connect the switching contact S21 to the full lighting ballast 4-2.

Therefore, the above-described switching of the operating mode of the main body 2 is performed.

Next, 31 is a protection device, which is installed in series between the auxiliary power supply 16 and the switching device 15, and does not operate normally, but when the line between the switching device 15 and the signal generator 19 is short-circuited, it protects the transmission line. L3. When L4 come into contact with each other, they are activated to cut off the auxiliary power source 16.

In this embodiment, a thyristor 32 is connected in parallel with the step-down transformer 17, and the thyristor 32 is connected in parallel with the step-down transformer 17.
Fuse 3 is connected between the anode of 2 and one pole of auxiliary power supply 16.
3 is connected, and a trigger circuit 36 consisting of a voltage detection resistor 34, an operation level setting element 35, etc. is provided between the step-down transformer 17 and the rectifier circuit 18.

The operation of this protection device 31 will be explained.

Normally, the trigger circuit 36 is not activated by the voltage between the terminals of the voltage detection resistor 34, and the operation level setting element 35 is set so that the thyristor 32 is not conductive.

Therefore, the protection device 31 also does not operate.

Then, the switching device 15 and the signal generation circuit 19
If the line between the lines is short-circuited, the current-limiting resistor 20 is short-circuited and an overcurrent flows to the output side of the rectifier circuit 18.
The current flowing to the input side of the rectifier circuit 18 also increases.

Therefore, the voltage between the terminals of the voltage detecting resistor 34 increases and exceeds the set value of the operation level setting element 35, and the trigger circuit 36 operates to generate a gate signal.

Therefore, the thyristor 32 becomes conductive and one pole of the auxiliary power supply 16 - the fuse 33 - the thyristor 32 - the auxiliary power supply 1
Since a short circuit current flows through the circuit of the other pole of 6, the fuse 33 is blown and the auxiliary power source 16 is cut off.

Therefore, even if there is no control signal from the signal generator 19, the switching device 15 deenergizes the excitation coil R, connects the switching contact S21 to the full lighting ballast 4-2, and controls the operating mode of the main body 2. Switch to emergency mode.

In addition, since the auxiliary power supply 16 is cut off as described above,
This prevents overcurrent from affecting the auxiliary power supply 16 or burning out the voltage drop transformer 17.

In this embodiment, a contact S22 of the switching device 15 is provided inside the main body 2.

This contact S22 is connected to the excitation coil Ry2 of the switching device 15.
It closes when it is energized and opens when it is deenergized.

That is, it operates in the same manner as the normally closed contact 25 of the above-mentioned information transfer device 26.

Both ends of this contact S22 are connected to connection terminals 37 and 38 provided on the main body 2.

Furthermore, these connection terminals 37 and 38 are connected to the switching device 15' of the other main body 2' via another signal generator 19'.
It is connected to the.

Therefore, this other body 2' operates similarly to body 2.

Further, if the main body 2' is also provided with a contact S22' similar to the contact S22 of the main body 2, it is possible to further interlock other main bodies.

Incidentally, if the signal generating device 19' of the other main body 2' is built into the main body 2, the connection between the main bodies 2 and 2' is easy.

With this configuration, it is possible to simultaneously control the switching devices of a plurality of main bodies with one information transfer device.

Moreover, when adding more main bodies, it is possible to simply connect each main body.

Next, the effect will be explained.

At all times, the lamp 3 of the main body 2 is connected to the dimmed lighting ballast 4-1, so that the main body 2 performs guidance display in a dimmed lighting state.

In an emergency such as a fire, the normally closed contact 25 of the signal transfer device 26 opens due to the activation of the fire alarm, so the excitation coil Ry□ of the switching device 15 is deenergized, and the switching contact S21
From the dimming lighting ballast 4-1 side to the full lighting ballast 4-2
Switch to the side.

Therefore, the main body 2 performs a guidance display with all the lamps 3 lit to make the display surface clear and guide evacuees to evacuate.

In this manner, the main body 2 switches from the normal operating mode to the emergency operating mode in an emergency.

Furthermore, if the line between the switching device 15 and the signal generator 19 is short-circuited, that is, in the event of a fire, etc., the transmission line
, L4 contacts, the auxiliary power source 16 is cut off by the protection device 31.

Therefore, the excitation coil of the switching device 15 is deenergized, so that the switching contact S21 is connected to the dimming lighting ballast 4-1.
switch from the side to the full lighting ballast 4-2 side.

Therefore, the operating mode of the main body 2 is reliably switched to the operating mode in an emergency, as in the case where it is controlled by the signal generator 19 in an emergency as described above.

In this way, when the above-mentioned short circuit accident occurs, the protective device 31
Since the switching device 15 cuts off the auxiliary power supply 16 and reliably switches the operating mode, there is no inconvenience that the operating mode remains the same even in an emergency, and the auxiliary power supply 16 may also be adversely affected by the overcurrent. Never.

Note that the protection device is not limited to that of this embodiment.

For example, the thyristor may be another switching element, such as a triac, and the fuse may be, for example, a current breaker.

Further, the connection position of the protection device is not limited to the case of this embodiment, and may be anywhere between the switching device and the auxiliary power source.

Furthermore, if desired, the step-down transformer can be shared with a filament heating transformer or a charging transformer.

FIG. 2 shows another embodiment of the invention.

Note that FIG. 2 shows only the parts that are different from the embodiment shown in FIG. 1, and the same parts are omitted and their explanations are also omitted.

Further, parts corresponding to those in the embodiment shown in FIG. 1 are given corresponding reference numerals.

The switching device 15'' is a relay in this embodiment.

In this embodiment, the auxiliary power source 16' that energizes the switching device 15'' is provided separately from the main power source 1', and is, for example, a commercial AC power source.

These switching devices 15'' and auxiliary power source 16'
The signal generator 19'' provided between the two is configured as follows.

That is, a step-down transformer 40 that steps down the auxiliary power supply 16'
, a rectifier circuit 41 connected between one end of the transformer 40 and the intermediate tap to rectify the stepped-down AC voltage. It consists of an excitation coil Ry3 of a relay whose one end is connected to one of the output terminals of the rectifier circuit 41, and a contact S3 of the relay inserted into the energizing circuit of the switching device 15''.

A fire alarm (not shown) is connected between the other output terminal of the rectifier circuit 41 and the other end of the excitation coil Ry3.

) is connected to the normally closed contact 25' of the transfer actual device 26'.

In this signal generator 19'', current normally flows through the path from the positive terminal of the rectifier circuit 41 to the excitation coil Ry3 of the relay and the negative terminal of the rectifier circuit 41 through the normally closed contact 25', so the excitation coil Ry3 is not excited. The contact S3 is closed, and the switching device 15'' is energized by the auxiliary power source 16'.

At this time, the main body 2'' is in a normal operating mode.

In case of an emergency, the normally closed contact 25 is linked to the fire alarm.
' opens, the excitation coil Ry3 is deenergized and the contact S3
to open.

Therefore, the switching device 15'' is deenergized and switches the operating mode of the main body 2'' to the emergency mode.

Further, the protection device 31' in this embodiment is, for example, a fuse, and is incorporated into the signal generator 19'.

In this embodiment, by connecting another main body 2'' to the signal generator 19'' in parallel with the main body 2'',
One signal generator 19' connects two main bodies 2'', 2'//
It is possible to control the switching devices 15'', 15''', and it is also possible to control a plurality of switching devices in the same way.

Next, the operation of this embodiment will be explained.

Incidentally, the case where the control is performed by the signal from the signal generator 19'' in normal and emergency situations is almost the same as the operation of the embodiment shown in FIG. 1, and therefore will not be described here.

If the line between the switching device 15'' and the signal generator 19'' is short-circuited, the switching device 15'' is no longer energized, so that the operating mode of the main body 2'' is switched from normal to emergency mode.

In addition, the protection device 31' is also exposed to the auxiliary power supply 16 due to a short circuit.
Since an overcurrent flows from ', the auxiliary power supply 16' is cut off by fusing.

Therefore, the auxiliary power supply 16' is not affected by overcurrent.

As described above, in this embodiment as well, when a line short-circuit accident occurs, the operating mode can be reliably switched and the auxiliary power source can be protected from overcurrent.

In each of the above-mentioned embodiments, the blown fuse can be replaced with an unused one to restore operation.

In each of the embodiments described above, an internally illuminated main body is shown, but the present invention is not limited to this, and for example, an externally illuminated main body may be used.

It may also be one that emits a buzzer or flashes a flash lamp in case of an emergency.

Furthermore, even if the lamp is always dimmed and turned on in an emergency, and fully lit to provide guidance as in each of the above embodiments, the ballast device is not limited to the one in the embodiments, and two ballasts may be used. Various modifications are possible, such as connecting them in series and short-circuiting one of them in an emergency to turn on all of them.

Furthermore, the switching device, the signal generating device, and the protection device are not limited to the respective embodiments described above, and various modifications are possible.

As described in detail above, the present invention provides a protective device between a switching device installed in the main body that switches the operating mode of the main body under the control of a signal from a signal generator, and a double-acting power supply that energizes this switching device. By installing these in series, when the line between the switching device and the signal generator is short-circuited, the protection device cuts off the auxiliary power supply, the switching device is deenergized, and the operating mode of the main unit can be reliably switched. To provide an evacuation guidance device that can reliably switch from a normal operation mode to an emergency operation mode and guide evacuees to evacuate reliably and quickly when a signal is received from a signal generator or when the line is short-circuited. can.

Moreover, since the auxiliary power source is cut off by the protection device, the auxiliary power source itself is not damaged due to overcurrent flow.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing one embodiment of the present invention, and FIG. 2 is a circuit diagram showing a part of another embodiment of the present invention. 1... Main power supply, 2. t2/, 2//, 2'//
...Body, 15.15', 15". 15"'...Switching device, 16.16'...
...Auxiliary power supply, 19.19'. 19″...Signal generator, 31.31'...
...protective device.

Claims (3)

[Scope of utility model registration request] (1) Main power source: A main body that is powered by the main power source and has different operating modes in normal and emergency situations; Auxiliary power source: A main body that is provided in the main body and has different operating modes in normal and emergency situations; a switching device that switches the normal operating mode of the main body to an emergency operating mode when the main unit is stopped; a signal generator that generates a signal to control a switching device; interposed in series between the auxiliary power source and the switching device, and shuts off the auxiliary power source when a line between the switching device and the signal generator is short-circuited; An evacuation guidance device characterized by comprising: a protective device that protects the user; and; (2) The evacuation guidance device according to claim (1), wherein the main power source also serves as the auxiliary power source. (3) The evacuation guidance device according to claim (1) or (2), wherein the signal generating device is linked to a fire alarm installed separately from the main body.