JPH08287371A - Emergency broadcasting system - Google Patents

Abstract

PURPOSE: To quickly and properly perform the measure after a fire generating place is confirmed. CONSTITUTION: This system is provided with a fire alarm equipment inputting various kinds of information from the sensor monitoring the presence or absence of the abnormality at each monitoring area and performing display/alarm by a receiver 1, a speech means 19 which is installed at each place of the monitoring area and for which a speech connection with the receiver 1 of the fire alarm equipment is performed, an emergency broadcasting equipment 28 notifying fire information and evacuation guidances, etc., to the whole building and a speech switch means 40 switching the speech means 19 from the speech connection to the receiver 1 of the fire alarm equipment to the speech connection to the emergency broadcasting equipment 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an emergency broadcasting system used for broadcasting a fire or guiding evacuation.

[0002]

2. Description of the Related Art Conventional emergency broadcasting systems include, for example, a fire detector for monitoring a fire in a surveillance area, a receiver for receiving and displaying fire information from the fire detector, and a receiver. Fire alarm equipment that has a telephone that can communicate with a telephone and has a display device that is installed in each part of the surveillance area to receive and display a transfer signal such as fire information from a receiver or a transmitter that transmits fire information It is known that a voice input microphone is provided with an emergency broadcasting facility that informs the entire building of fire information and evacuation guidance.

[0003] Usually, the receiver of the fire alarm equipment for monitoring the fire in the surveillance area, the fire information, non-fire information throughout the entire building, or the control unit of the emergency broadcast equipment used for evacuation guidance, and the voice output microphone are used. It is installed in a disaster prevention center where guards are always on standby. When the fire detector installed in the monitored area detects an abnormality, it sends out fire information to the receiver, the receiver displays the location of the fire detector that detected the fire, and a fire alarm is issued at each location in the monitored area. I do. The guards know the location of the fire from the display of the receiver,
Run to the place of the fire. The rushed security officers confirm the situation of the place where the fire occurred, and inform the other security personnel in the disaster prevention center etc. by radio or a telephone for maintenance provided on the transmitter or display device. The security guards at the disaster prevention center, etc. will broadcast the current situation (fire, non-fire) and emergency evacuation guidance when emergency evacuation is required, depending on the contact status. When using the emergency broadcast equipment, the alarm of the fire alarm equipment is temporarily stopped by the ON signal of the audio output of the emergency broadcast equipment so that people can hear the voice of the emergency broadcast equipment.

The maintenance telephones provided in the receiver, transmitter, and display device are not equipped with a telephone, but are provided with a telephone jack. By inserting the telephone into the telephone jack, Many are configured to talk to each other.

[0005]

However, in such a conventional emergency broadcasting system, in the case of a fire in a building where there is only one guard, the guard is for some reason sent from the disaster prevention center or the like. If you are away, or if the security personnel who remain at the disaster prevention center are not accustomed to handling the emergency broadcast equipment, the security personnel who went to check the location of the fire will return to the disaster prevention center, etc., and Since it is necessary to broadcast, there was a problem that the response after the confirmation of the fire location was delayed.

The present invention has been made in view of such conventional problems, and an object of the present invention is to provide an emergency broadcasting system capable of promptly and appropriately responding to a fire after confirming its location.

[0007]

In order to achieve the above object, the present invention provides a fire alarm in which various information from a sensor for monitoring the presence or absence of an abnormality in each monitoring area is input and displayed / warned by a receiver. Equipment, communication means installed in various places in the monitoring area and connected to the receiver of the fire alarm equipment, emergency broadcast equipment for notifying the whole building of fire information and evacuation guidance, and the call means for the fire alarm And a call switching means for switching from a call connection to the receiver of the equipment to a call connection to the emergency broadcasting equipment.

The call switching means used in the present invention is provided on the call means side, and the first emergency broadcast switching device switches the call means from the connection with the receiver to the connection with the emergency broadcast telephone line. And provided on the emergency broadcast facility side,
The second emergency broadcast switching device switches the connection between the emergency broadcast facility and the voice input microphone to the connection between the emergency broadcast telephone line and the emergency broadcast facility.

In addition, the first emergency broadcast switching device used in the present invention switches a telephone line switching circuit for switching the communication means from the receiver to a telephone line for emergency broadcasting, and activates the telephone line switching circuit. The second emergency broadcast switching device is configured to output a switching signal to the second emergency broadcast switching device via a control line, and the second emergency broadcast switching device switches the voice input microphone to the telephone line to emergency broadcast the telephone line. It is composed of a telephone line switching circuit connected to equipment and a control circuit for controlling switching of the telephone line switching circuit by a switching signal sent from the control line.

Further, the first emergency broadcast switching device used in the present invention comprises a telephone line switching circuit for switching the communication means from the receiver to a telephone line for emergency broadcasting, and a switching operation for switching the telephone line switching circuit. A second emergency broadcast switching circuit for switching the voice input microphone to the telephone line to connect the telephone line to the emergency broadcasting facility; and a control circuit for controlling the switching of the telephone line switching circuit. And a voice signal detection circuit that is connected to the telephone line and that detects a voice signal from the communication means and operates the control circuit.

Further, the control circuit used in the present invention sends a signal to the emergency broadcast facility to the effect that emergency broadcast will be performed. Further, the present invention is a fire alarm facility for inputting various information from a sensor for monitoring the presence or absence of abnormality in each monitored area and displaying / warning with a receiver, and the fire alarm facility installed at each place in the monitored area. A voice warning output means for giving a voice warning when an abnormality is detected, an emergency broadcast facility for notifying the entire building of fire information, evacuation guidance, etc., and the voice warning output means as a voice input means of the emergency broadcast facility. Switching means for switching connection is provided.

Further, the present invention is a fire alarm system for inputting various kinds of information from a sensor for monitoring the presence or absence of abnormality in each monitored area and displaying / warning with a receiver, and a fire alarm installed in each place of the monitored area. Call means connected to the receiver of the equipment by call, voice alarm output means attached to the same storage container as the call means to give a voice alarm when the fire alarm equipment detects an abnormality, fire information and evacuation guidance etc. From the connection between the emergency broadcasting equipment that informs the whole building and the call means from the call connection to the fire alarm equipment receiver to the call connection to the emergency broadcast equipment and the connection between the call switching means and the call means And a communication means switching means for switching to connection with the voice alarm output means.

Further, the call means and the voice alarm output means of the present invention are attached to a display device of a fire alarm facility or a transmitter or a device accommodating box equipped with a transmitter provided in various places in the monitored area.

[0014]

According to the emergency broadcast system of the present invention having such a configuration, the call means installed at various places in the monitored area is connected to the receiver of the fire alarm equipment to make a call to the emergency broadcast equipment. Since we switched to connection, if there is only one security officer, if the security officer is away from the disaster prevention center for some reason, even if the security officer is unfamiliar with handling emergency broadcast equipment, fire information and evacuation Since the guidance and the like can be directly notified by an emergency broadcast from the communication means installed near the fire occurrence place, it is possible to respond promptly and appropriately without delaying the response after confirmation of the fire occurrence place.

Further, since the switching means is provided for switching and connecting the voice alarm output means installed at various places in the surveillance area as the voice input means of the emergency broadcasting equipment, fire information and evacuation guidance are provided near the fire occurrence location by the emergency broadcast. Since it is possible to give a direct notification from the voice alarm output means installed in, it is possible to respond promptly and appropriately without delaying the response after confirmation of the fire occurrence location.

[0016]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 are diagrams showing a first embodiment of the present invention. FIG. 1 is a diagram showing a fire alarm system according to a first embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a receiver, which is installed in a place such as a disaster prevention center where a guard is always on standby. A transmission line 2 is drawn from the receiver 1 and is connected to a monitoring repeater 3, an analog sensor 4, and a control repeater 5. A power / combined signal line 6 is drawn out from the monitoring repeater 3, and one or a plurality of ON / OFF sensors 7 are connected to the power / combined signal line 6.

Further, a transmitter 8 is connected to the power source / signal line 6 so that the occurrence of a fire can be transmitted from the transmitter 8 to the receiver 1. The transmitter 8 is provided with a telephone (not shown) so that the telephone can communicate with the telephone (not shown) of the receiver 1. Further, as will be described later, fire information, evacuation guidance, etc. can be emergency broadcast to the entire building from the telephone of the transmitter 8.

The transmitters 8 are arranged at various places in the surveillance area. The analog sensor 4 has a built-in function as a repeater, and sends the analog value detected by the heat sensor or smoke density sensor to the receiver 1. A control load 9 is connected to the control repeater 5 by a control line. The control load 9 is an appropriate disaster prevention device such as a district bell, a fire door release, a solenoid for driving a smoke exhaust damper, and a motor.

A display device 11 is connected to the receiver 1 via a signal line 10. When the control circuit 12 receives the fire signal from the analog sensor 4 and the on / off sensor 7, the receiver 1 displays the fire signal on the display unit 13, and then transmits the fire signal to the display device 11. The display device 11 is installed at various places in the surveillance area, and when the control circuit 14 receives the fire signal from the receiver 1, the display device 11 displays it.

The display device 11 is provided with a telephone as a communication means, which will be described later, and can communicate with the telephone installed in the receiver 1. Further, as will be described later, fire information, evacuation guidance, and the like can be emergency broadcast to the entire building by a telephone of the display device 11. Next, FIG. 2 is a diagram showing an emergency broadcast facility and the like.

In FIG. 2, reference numeral 1 is the receiver of the fire alarm system, and a display device 11 is connected to the receiver 1 via a signal line 10. The receiver 1 has a control circuit 12 and a display unit 13 controlled by the control circuit 12, and the display device 11 has a control circuit 14 connected to the control circuit 12 and a display unit 15 controlled by the control circuit 14. . The receiver 1 is provided with a telephone 16, and the telephone 16 has a telephone line 17
And the display device 1 via the first emergency broadcast switching device 18.
It is connected to the telephone device 19 provided in the No. 1.

The first emergency broadcast switching device 18 comprises a telephone line switching circuit 20 and switching means 21. The telephone line switching circuit 20 has contacts 22 and 23 and a switch 24. Since the switch 24 is normally connected to the contact 22, the telephone 16 and the telephone 19 are connected and the telephone 19 of the display device 11 is connected. When performing an emergency broadcast from the telephone, the telephone 16 is disconnected from the telephone 19 when the switch 24 is connected to the contact 23 by operating the switching means 21.
Is connected to a telephone line 25 for emergency broadcast.

A control line 26 is drawn out from the switching means 21, and the control line 26 is connected to a second emergency broadcast switching device 27. When the switching means 21 is operated, a switching signal is sent to the second emergency broadcast switching device 27 via the control line 26. The first emergency broadcast switching device 18 is provided inside or near the display device 11. Second
The emergency broadcast switching device 27 is provided on the emergency broadcast facility 28 side and includes a control circuit 29 and a telephone line switching circuit 30. The telephone line switching circuit 30 has contacts 31 and 32 and a switch 33. Normally, the switch 33 has the contact 32.
A voice input microphone 34 is connected to the emergency broadcast facility 28 via a voice line 35.

The control circuit 29 controls the switching means 21 during an emergency broadcast.
When the switching signal is received through the control line 26 by the operation of, the switch 33 is switched to the contact 31. Switch 3
When 3 is connected to the contact 31, the voice input microphone 34 is disconnected from the voice line 35, and the emergency broadcast telephone line 25 is connected to the emergency broadcast facility 28 via the voice line 35. Further, when the control circuit 29 receives the switching signal, the control line 36
Control circuit 3 of the emergency broadcast equipment 28 connected via the
A signal informing that the emergency broadcast is to be performed is transmitted to 7 and the emergency broadcast equipment 28 is set to the emergency broadcast state.

The emergency broadcast facility 28 is composed of a control circuit 37 and an audio amplifier circuit 38. Voice amplifier circuit 38
Is input from the voice input microphone 34 or the display device 11
The input from the telephone 19 provided in the above is amplified, and an emergency broadcast audio signal is sent to the speaker of the whole building via the broadcast line 39. The call switching means 4 for switching the telephone 19 from the call connection to the receiver 1 to the call connection to the emergency broadcast facility 28 by the first emergency broadcast switching device 18 and the second emergency broadcast switching device 27.
Configures 0.

Next, the operation will be described. In normal times, the telephone line switching circuit 20 of the first emergency broadcast switching circuit 18
The switch 24 of the receiver 1 is connected to the contact 22 of the receiver 1
The telephone 16 is connected to the telephone 19 of the display device 11 via a telephone line 17. Therefore, the telephone 16,1
9 allows mutual communication.

The switch 33 of the telephone line switching circuit 30 of the second emergency broadcast switching device 27 is connected to the contact 32,
An emergency broadcast can be performed using the voice input microphone 34. Now, when the analog sensor 4 or the on / off sensor 7 outputs a fire signal to the receiver 1, the control circuit 12 of the receiver 1 receives the fire signal, displays it on the display unit 13, and then displays the fire signal on the display device 11. Send. When receiving the fire signal from the receiver 1, the control circuit 14 of the display device 11 displays the fire information on the display unit 15. Further, the receiver 1 drives the control load 9 via the repeater 5. That is, the area bell is rung and the fire door and smoke outlet are driven and controlled.

The security officer knows the fire occurrence location from the display section 13 of the receiver 1 and rushes to the fire occurrence location. The security officer confirms the situation of the place where the fire occurred, and the transmitter 8 and the display device 11
Call the situation to other guards at the disaster prevention center, etc. using the telephone 19 of the above. The security staff at the disaster prevention center or the like broadcasts the current fire status by the voice input microphone 34 and the evacuation guidance when evacuation is required, depending on the contacted status.

Here, when there is only one security officer, when the security officer is separated from the disaster prevention center for some reason, or when the security officer who remains at the disaster prevention center is unfamiliar with the handling of the emergency broadcasting equipment. To do this, the security personnel who went to check the location of the fire had to return to the disaster prevention center etc. to broadcast the emergency broadcast to the whole building. An emergency broadcast is performed using the telephone 19 of the display device 11 near the place of occurrence.

The guard operates the switching means 21 of the first emergency broadcast switching device 18 in order to perform the emergency broadcast from the display device 11. When the switching means 21 is operated, the switch 24 of the telephone line switching circuit 20 is switched from the contact 22 to the contact 23, the telephone device 19 is connected to the emergency broadcast telephone line 25, and the control line 26 is used to connect A switching signal is sent to the control circuit 29 of the second emergency broadcast switching device 27.

When the control circuit 29 receives the switching signal,
The switch 33 of the telephone line switching circuit 30 is switched from the contact 32 to the contact 31. Therefore, the voice input microphone 34 is
The emergency broadcast facility 28 is disconnected, and the emergency broadcast telephone line 25 is connected to the emergency broadcast facility 28 via the voice line 35. That is, the telephone 19 is connected to the voice amplification circuit 38 of the emergency broadcast facility 28 via the first and second emergency broadcast switching devices 18 and 27.

Further, the control circuit 29 sends a signal to the control circuit 37 of the emergency broadcast facility 28 to the effect that the emergency broadcast will be performed, so that the emergency broadcast facility 28 is put into the emergency broadcast state. In this way, it is possible to inform the user of fire information, evacuation guidance, etc. from the speaker of the whole building by the telephone 19. In this way, the emergency broadcast can be performed directly from the fire occurrence site without returning to the disaster prevention center or the like regarding the fire situation and evacuation guidance.

Therefore, there is no delay in the response after confirmation of the fire occurrence site, and it is possible to respond promptly and appropriately. Next, FIG. 3 is a block diagram showing a second embodiment of the present invention. In FIG. 3, reference numeral 25 is a telephone line for emergency broadcast, one end of which is connected to a contact 23 of the telephone line switching circuit 20 of the first emergency broadcast switching device 18, and the other end is a second emergency broadcast switching device. It is connected to 27 audio signal detection circuits 41. When the switch 24 is switched from the contact 22 to the contact 23 by the switching means 21, the telephone 19 is connected to the voice signal detection circuit 41 via the telephone line 25 for emergency broadcast, and the voice signal detection circuit 41 is changed from the telephone 19. Detect the voice signal of.

The contact 42 in the middle of the emergency broadcast telephone line 25 is connected to the contact 31 of the telephone line switching circuit 30 of the second emergency broadcast switching device 27. Voice signal detection circuit 4
When 1 detects a voice signal from the telephone device 19, it sends a detection signal to the control circuit 29, and the control circuit 29 switches the switch 33.
Is switched from the contact 32 to the contact 31.

Also in the present embodiment, if there is only one security guard, if the security guard is separated from the disaster prevention center or the like for some reason, or if the security guard at the disaster prevention center is unfamiliar with handling the emergency broadcasting equipment, In order to perform an emergency broadcast near the fire occurrence site, not from the disaster prevention center, the guard who confirms the fire occurrence place operates the switching means 21.

When the switching means 21 is operated, the switch 24 of the telephone switching circuit 20 of the first emergency broadcast switching device 18 is operated.
Is switched from contact 22 to contact 23. Switch 2
When 4 is switched from the contact 22 to the contact 23, the telephone 19 of the display device 11 is connected to the audio signal detection circuit 41 of the second emergency broadcast switching device 27 via the telephone line 25,
The voice signal detection circuit 41 detects a voice signal from the telephone 19.

Upon detection of the audio signal by the audio signal detection circuit 41, the control circuit 29 is activated and the switch 33 is turned on to the contact 32.
From the contact point to the contact point 31 and the emergency broadcast facility 28
A signal to the effect that emergency broadcast will be performed is sent to the control circuit 37 of FIG. Thus
The telephone 19 is connected to the voice amplification circuit 38 of the emergency broadcast facility 28, and fire information and evacuation guidance are notified from the speakers of the entire building.

Also in this embodiment, the same effect as that of the above embodiment can be obtained. Although the emergency broadcast is performed from the display device 11 in the embodiment, the present invention is not limited to this, and the first emergency broadcast is provided near the transmitter 8 installed at various places in the monitored area or integrally with the transmitter 8. The switching device 18 may be provided and the telephone 19 of the transmitter 8 may be used for emergency broadcasting.

Next, FIG. 4 is a block diagram showing a third embodiment of the present invention. The present embodiment is an example in which an emergency broadcast is provided from a speaker (voice alarm output means) provided in the display device 11 for outputting a voice alarm such as a fire. 4, in a normal state, the call switching circuit 53 connects the alarm sound output circuit 50 and the speaker 51, and when various transfer signals are received from the receiver 1, the speaker 51 outputs an alarm.

When a security guard makes an emergency broadcast from the display devices 11 provided at various places in the monitoring area, the switching means 21 is operated to switch the call switching circuit 53, and the speaker 51 is connected to the second emergency signal via the amplifier 52. It is connected to the broadcast switching device 27.
The operation after the second emergency broadcast switching device 27 is the same as that of the embodiment of FIG. Therefore, the speaker 51 and the emergency broadcast facility 2
8 are connected and emergency broadcast can be performed. Of course, the configuration of the second emergency broadcast switching device 27 can also be performed by the configuration of the embodiment of FIG.

Although the speaker 51 for outputting an alarm is provided in the display device 11, this embodiment can be applied to any alarm means for audio alarms provided at various places in the monitoring area. Next, FIG. 5 is a block diagram showing a fourth embodiment of the present invention. This embodiment is an example in which an emergency broadcast can be performed by both the speaker, which is usually provided in the display device 11 and which gives a voice warning of an abnormality such as a fire, and the telephone device 19.

In FIG. 5, a communication means switching means 54 is a switching means for selecting a communication means to be used at the time of emergency broadcasting, and either the telephone 19 or the speaker 51 is firstly connected.
The switching means is connected to the emergency broadcast switching device 18. The communication means switching circuits 55 and 56 are switching circuits that operate when an emergency broadcast is performed from the speaker 51, and operate in conjunction with the operation of the communication means switching means 54.

The communication means switching circuit 55 is normally the telephone 19
Is connected to the first emergency broadcast switching device 18, and a telephone call can be made from the telephone device 19 to the telephone device 16 of the receiver 1 or the switching means 21 can be operated to make an emergency broadcast. At this time, the communication means switching circuit 56 connects the alarm sound generator 50 and the speaker 51, and generates an alarm sound by the control signal of the control circuit 14.

When a security officer makes an emergency broadcast due to a fire or the like, first, the switching means 21 is operated to bring the emergency broadcast into a state. In this state, the guard can make an emergency broadcast from the telephone 19. If the guard does not have the telephone 19, he / she operates the call means switching means 54 to make an emergency broadcast from the speaker 51. Then, the communication means switching circuit 55 operates and the amplifier 52 and the first emergency broadcast switching device 18 are connected. Further, the communication means switching circuit 56 operates and the speaker 51 is connected to the amplifier 52. Therefore, the speaker 51 and the first emergency broadcast switching device are connected, the emergency broadcast can be performed from the speaker 51, and even if the guard does not carry a telephone, the display installed near the fire site Emergency broadcast can be performed from the device 11.

Also in the case of this embodiment, this embodiment can be applied to the case where the voice alarm output means and the transmitter with the telephone are in the same housing box.

[0046]

As described above, according to the present invention, the call means provided at various places in the surveillance area is switched from the call connection to the receiver of the fire alarm equipment to the call connection to the emergency broadcast equipment. Since the call switching means is provided, fire information and evacuation guidance can be notified from the fire occurrence site by emergency broadcast, and the response after confirmation of the fire occurrence place will not be delayed and will be handled promptly and appropriately. You can

Further, since the switching means is provided for switching and connecting the voice alarm output means installed at various places in the monitored area as the voice input means of the emergency broadcasting equipment, fire information and evacuation guidance are provided near the fire occurrence location by the emergency broadcast. Since it is possible to give a direct notification from the voice alarm output means installed in, it is possible to respond promptly and appropriately without delaying the response after confirmation of the fire occurrence location.

[Brief description of drawings]

FIG. 1 is a diagram showing a fire alarm system according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an emergency broadcast facility and the like according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a second embodiment of the present invention.

FIG. 4 is a block diagram showing a third embodiment of the present invention.

FIG. 5 is a block diagram showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1: receiver 11: display device 18: first emergency broadcast switching device 19: telephone (call means) 27: second emergency broadcast switching device 28: emergency broadcast facility 40: call switching means

Claims (8)

[Claims] 1. Fire alarm equipment for inputting various kinds of information from a sensor for monitoring the presence or absence of abnormality in each monitored area and displaying / warning with a receiver, and reception of the fire alarm equipment installed at various places in the monitored area. A call means connected to the fire alarm system, an emergency broadcast facility for notifying the entire building of fire information and evacuation guidance, and a call connection from the call means to the receiver of the fire alarm facility to the emergency broadcast facility. An emergency broadcast system, comprising: a call switching means for switching to the call connection of the above. 2. A first emergency broadcast switching device, wherein said call switching means is provided on the side of said call means, and switches said call means from connection with said receiver to connection with a telephone line for emergency broadcast. The second emergency broadcast switching device is provided on the emergency broadcast facility side and switches the connection between the emergency broadcast facility and the voice input microphone to the connection between the emergency broadcast telephone line and the emergency broadcast facility. An emergency broadcast system characterized by the following. 3. A first emergency broadcast switching device, a telephone line switching circuit for switching the communication means from the receiver to a telephone line for emergency broadcasting, and a switching operation of the telephone line switching circuit and a control line. And a switching means for outputting a switching signal to a second emergency broadcast switching device via the switching means. The second emergency broadcast switching device switches the voice input microphone to the telephone line to connect the telephone line to the emergency broadcasting facility. 3. The emergency broadcasting system according to claim 2, comprising a telephone line switching circuit for controlling the telephone line and a control circuit for controlling switching of the telephone line switching circuit by a switching signal sent from the control line. 4. The first emergency broadcast switching device comprises a telephone line switching circuit for switching the communication means from the receiver to a telephone line for emergency broadcasting, and a switching means for switching the telephone line switching circuit. A second emergency broadcast switching circuit for switching the voice input microphone to the telephone line to connect the telephone line to the emergency broadcast facility; a control circuit for switching and controlling the telephone line switching circuit; 3. The emergency broadcast system according to claim 2, further comprising a voice signal detection circuit connected to a telephone line and detecting a voice signal from the call means to operate the control circuit. 5. The emergency broadcast system according to claim 1, wherein the control circuit sends a signal to the emergency broadcast facility to perform an emergency broadcast. 6. A fire alarm facility for inputting various information from a sensor for monitoring the presence or absence of abnormality in each monitored area and displaying / warning with a receiver, and an abnormality in the fire alarm facility installed at each location in the monitored area. When an alarm is detected, an audio alarm output means for issuing an audio alarm, an emergency broadcast facility for notifying the entire building of fire information and evacuation guidance, and switching of the audio alert output means as an audio input means of the emergency broadcast facility An emergency broadcasting system comprising switching means for connection. 7. A fire alarm facility for inputting various information from a sensor for monitoring the presence or absence of abnormality in each monitored area and displaying / warning with a receiver, and a fire alarm facility installed at each location of the monitored area to receive the fire alarm facility. A call means connected to the machine by call, a voice alarm output means attached to the same storage container as the call means to give a voice alarm when the fire alarm equipment detects an abnormality, and fire information and evacuation guidance etc. Emergency call equipment for notifying the call, the call means for switching the call means from the call connection to the receiver of the fire alarm equipment to the call connection to the emergency broadcast equipment, and the call change means for the call means An emergency broadcasting system, comprising: a communication means switching means for switching from connection with the voice alarm output means to connection with the voice alarm output means. 8. The call means and the voice alarm output means are attached to a display device of the fire alarm facility or a transmitter or a device accommodating box equipped with the transmitter, which is provided at various places in the monitored area. The emergency broadcasting system according to claim 1.