JP3479821B2 - Fire receiver for communal housing common use - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic fire alarm system for a large-scale apartment house, and to a fire receiver for an apartment house shared area, which is installed in a common area such as a corridor or stairs.

[0002]

2. Description of the Related Art Recently, an automatic fire alarm system suitable for this type of apartment house has been developed with the increase in the number of apartment houses and the increase in scale. FIG. 6 shows a system configuration diagram of this automatic fire alarm system. In a large-scale apartment house, a residential building receiver B is installed at a disaster prevention center, etc., and the housing information board D (receiver for housing unit) of each dwelling unit and shared housing units installed in common areas such as corridors and stairs Partial fire receiver A (hereinafter,
"Receiver for common area") and an alarm unit G installed in a common room such as a meeting room are connected to perform fire monitoring and fire notification in each space.

The common-use receiver A is connected to a detector line Ls to which a fire detector S is connected and an acoustic line Lsp to which an external audio device SP1 (additional speaker) is connected. Is issued, a fire alarm is output from the external audio device SP1 as a voice message or the like. In addition, the house information board D of each dwelling unit is connected to the dwelling unit receiver B via a repeater E with a test terminal installed at the entrance of each dwelling unit. In addition to connecting the sensor line Ls to detect the fire, the outdoor information display F installed at the entrance of the house is connected to each house information board D to perform an alarm output and an intercom function. ing.

Further, the alarm unit G in the common room is also provided with a repeater E with a test terminal, a sensor line Ls, and an outdoor display F, like the housing information board D of each dwelling unit. The remote tester C is connected to the common-use receiver A and the repeater E with test terminals in each dwelling unit and the common room so that an operation test can be performed. In addition, each house information board D is also connected to an alarm monitoring board H installed in a manager's room,
The monitoring status of each dwelling unit can be centrally managed,
The standby power supply device I provided in the receiver B of the residential building allows the power supply to be backed up even during a power failure.

FIG. 7 is a block diagram showing only the configuration of the receiver A for common use in the automatic fire alarm system. The receiver A for common use has a detector line Ls (L-C) to which a fire detector S is connected and an external sound device SP1.
Is connected to the acoustic line Lsp (SP-SPC), which is connected to the residential building receiver B via a signal line Lab. Also, by connecting the terminal J1 to the test terminal J, an operation test by the remote tester C can be performed.

In the figure, 101 is an information processing circuit composed of a CPU or the like, 102 is a display operation unit composed of a liquid crystal screen or an indicator lamp and various switches, and 103 is an external audio device SP1 or an internal audio device SP2 ( An acoustic alarm circuit for outputting a fire alarm as a voice message from a built-in speaker), and 104 is a sensor line (JL-) of the signal line Lab.
Fire transfer circuit that outputs a fire alarm signal to the residential building receiver B via JC), and 105 is an alarm control reception that receives an alarm control signal from the residential building receiver B via the district bell line (B-BC). Reference numeral 106 denotes a residential building receiver B and a signal line Lab (T-
A telephone terminal for connecting a telephone in order to make a call via TC), 107 is a fire detector S reporting and a detector line Ls
Is a fire / disconnection detection circuit for detecting disconnection of the remote tester, 108 is an under-test detection circuit for detecting connection of the remote tester C, and 109 is a power supply circuit.

To explain the basic operation of this system, if any of the fire detectors S connected to the detector line Ls issues a warning, the fire / disconnection detection circuit 107 detects this. Then, the fire alarm lamp (not shown) of the display operation unit 102 is turned on or blinked by the sound alarm circuit 103, and the first sound alarm is output from the internal audio device SP2 by an alarm or a voice message. This first fire alarm notifies the operation of the fire detector S and prompts the resident to confirm whether or not there is a fire. For example, the message is "Fire detector has activated. Please check."

The first fire alarm is continuously output for a predetermined time (for example, 5 minutes). If the display operation unit 102 is operated to stop the transfer within the predetermined time, the alarm output is given. If it stops, but a predetermined time elapses without operation, the fire transfer circuit 104 detects the detector line (JL-J
A fire alarm signal is output to the residential building receiver B via C).

[0009] On the other hand, when the fire alarm signal is received by the residential building receiver B, the district bell line (B-BC) is sent to the residential information panel D of the dwelling unit, the alarm unit G, etc. which are preset as the alert destinations. An alarm control signal is output via. At this time, the target of the alarm control signal is a neighboring dwelling unit or the like on the same floor as the receiver A for the common part that has output the fire alarm signal or on the floor directly above.

The receiver A for the common area includes a voice alarm circuit 103.
The second sound alarm is output from the external audio device SP1 and the house information panel D of the neighboring dwelling unit that receives the alarm control signal from the housing receiver B also issues the second fire alarm. Here, the second fire alarm is for notifying the occurrence of an actual fire, and is for asking the dwellers to evacuate and take countermeasures. For example, the message is "Fire. It's a fire. There was a fire in ○○. Please check the safety and evacuate." In addition, in house information board D,
In addition to displaying the fire on the outdoor display 2,
It is also possible to output the voice message of the fire alarm of.

The basic operation when an actual fire occurs has been described above. However, in such a fire alarm system,
An operation test can be performed by connecting the remote tester C, and the operation will be described below. When the remote tester C is connected to the connection terminal J and a power switch (not shown) is operated, the relay RT is activated, the contact rt is closed, and the test-in-test circuit 1
08 indicates that the test is in progress. After that, the contact rt1 is switched, and the connection of the sensor line Ls is switched from the fire / break detection circuit 107 to the remote tester C side. At this time, the common-use receiver A detects that the test is in progress, and therefore the output of the abnormality alarm due to the disconnection of the sensor line Ls is prohibited.

In this state, by operating the various switches of the remote tester C, the fire sensor S operation test, the common area receiver A operation test, and the residential building receiver B interlocking test can be performed. Can be implemented.

[0013]

As described above, in the conventional fire receiver for the common use area of the common house, when the connected fire detector issues an alarm to confirm the occurrence of an actual fire, or in the neighborhood. When a fire occurs in a dwelling unit and an alarm control signal is received from the dwelling receiver B, an alarm is output by a voice message or a siren from an external audio device connected to the audio line. However, this receiver does not have a function to detect disconnection or short circuit of the audio line, so if a real fire occurs while the audio line is abnormal, the external audio system will not operate and the evacuation of the dwellers will be delayed. Was thought.

Further, since the conventional fire receiver for common use in the common house does not have means for setting whether or not to activate the external audio device or the internal audio device, an alarm sound is output from the external audio device during the operation test. Was output and sometimes annoyed residents in the neighborhood. In addition, even during normal fire monitoring, even if there is a problem that only security guards, etc. who do not seem to be very important should deal with, a warning sound will be output, so it will be a nuisance to the residents especially at night. There were cases where it took.

The present invention has been made in view of the above circumstances, and by providing a wiring for confirming continuity on an acoustic line and outputting a test alarm signal, the connection state of the acoustic line can be determined. The first object of the present invention is to provide a fire receiver for shared housing common areas. A second object is to provide a fire receiver for common-use common areas, which allows the permission and prohibition of the operation of the external audio device and the internal audio device to be preset so that the alarm output pattern can be switched depending on the situation. It is to be.

[0016]

In order to achieve the above-mentioned object, the fire receiver for common use common area according to the present invention comprises the following means. According to a first aspect of the present invention, an external alarm output unit that outputs an alarm signal to the acoustic line, and an acoustic line continuity detection unit that is connected to the terminal end of the acoustic line via a signal line and detects the connection state of the acoustic line, When the external alarm output unit outputs the test alarm signal, the acoustic line continuity detection unit detects the test alarm signal returned via the signal line and determines the connection state of the acoustic line.

Here, the signal line connecting the terminal end of the audio line and the audio line continuity detecting unit may be an extension of the audio line, that is, the audio line is derived from the external alarm output unit. After connecting one or a plurality of external audio devices, they may be connected to the audio line continuity detecting unit. Also,
The test alarm signal is a signal of inaudible frequency. This signal is composed of a pulse signal and a continuous wave signal.Because this signal is inaudible to the human ear, even if it is output from an external acoustic device during the continuity test of the acoustic line, it will No need to bother.

According to a second aspect of the present invention, the external alarm output section according to the first aspect further includes a test interval setting section that presets a time interval at which the external alarm output section outputs the test alarm signal.
The test alarm signal is periodically output to the acoustic line at the time interval set in the test interval setting unit. As a result, the continuity test of the acoustic line can be automatically performed. Further, claim 3
Then, the sound line test switch is further provided, and the external alarm output unit outputs a test alarm signal to the sound line when the sound line test switch is operated or when the power is turned on by the power switch.

According to a fourth aspect of the present invention, in any one of the first to third aspects, when the acoustic circuit continuity detecting section does not detect the test alarm signal output by the external alarm output section through the signal line, Abnormality is displayed on the display or abnormal sound is output from the internal audio device. According to a fifth aspect of the present invention, the abnormal sound output setting section according to the fourth aspect is set in advance to permit / prohibit the abnormal sound output from the internal acoustic device, and the acoustic line continuity detecting section outputs the test output by the external alarm output section. When the alarm signal is not detected through the signal line, the internal audio device is operated according to the setting of the abnormal sound output setting unit. As a result, the abnormality of the acoustic line can be known only by the receiver of the residential building, so that, for example, a disconnection of the acoustic line is not detected in the middle of the night and the neighboring units are not disturbed.

According to a sixth aspect of the present invention, in any one of the first to fifth aspects, when a fire detector connected to the detector line gives an alarm while the external alarm output section outputs the test alarm signal. After the output of the test alarm signal is finished, the alarm output from the external audio device and the internal audio device for the alarm of the fire detector is output. The output of the test alarm signal is sufficient even for a short period of time, so there is no significant impact even when the fire detector is triggered by the occurrence of an actual fire.

It should be noted that, while the output alarm signal for testing is not detected by the acoustic line continuity detection unit, the fire detector is activated while the abnormal display of the display unit and the abnormal sound output from the internal acoustic device are being performed. At the time of reporting, the output of the test alarm signal has already ended, so that the external audio device or the internal audio device can be immediately activated. In claim 7, while the fire detector connected to the detector line in claim 6 issues a warning and outputs an alarm from the external audio device and the internal audio device,
The external alarm output unit does not output the test alarm signal to the acoustic line, and according to claim 8, when the alarm output from the external audio device and the internal audio device for the alarm of the fire detector is stopped,
The external alarm output unit outputs a test alarm signal to the acoustic line, and the acoustic line continuity detection unit determines the connection state of the acoustic line.

In other words, when the fire detector gives a warning, until the occurrence of a fire can be confirmed, the continuity test of the acoustic line is not performed even if the test time comes or the switch operation is performed. When the fire detector was reported as a false alarm and the receiver was restored, the test that was discontinued shall be performed. According to claim 9, an external sound device connected to the sound line and an alarm output setting unit for presetting permission / prohibition of an alarm output from the internal sound device built into the fire receiver are provided, and a fire detector is issued. When there is an error, or when an abnormality occurs in the operation of the fire receiver, the external audio device and the internal audio device are operated according to the setting of the alarm output setting unit. Here, it is assumed that the external audio device is an additional speaker and the internal audio device is a built-in speaker, and the abnormal operation of the fire receiver may be, for example, a case where an abnormal power supply or an abnormal sensor line is detected.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a main configuration of a fire receiver for common use common area (hereinafter, also referred to as “common area receiver”). Here, only the portion related to the continuity test of the acoustic line Lsp to which the external acoustic device SP1 is connected is illustrated (see FIG. 7).

The receiver A for common use is connected to a detector line Ls to which a fire detector S is connected and an acoustic line Lsp to which an external acoustic device SP1 is connected.
The terminal of p is connected to the separately derived signal line Lspb. This signal line Lspb may be an extension of the acoustic line Lsp, that is, it is derived from the terminal (SP-SPC), and after connecting the external acoustic device SP1, the terminal (S
PB-SPBC).

In the figure, 1 is an information processing circuit configured by a CPU or the like for controlling each section, 2 is a fire detection section for detecting an alarm of a fire detector S from a detector line Ls, and 3 is an acoustic line L.
An external alarm output unit 4 that outputs an alarm signal and a test alarm signal to sp is connected to the terminal end of the acoustic line Lsp via a signal line Lspb, and an acoustic line continuity detection unit that detects the connection state of the acoustic line Lsp, Reference numeral 5 is an internal alarm output unit for outputting an alarm from the internal audio device SP2, 6 is a test interval setting unit that presets a time interval at which the external alarm output unit 3 outputs a test alarm signal, and 7 is an internal audio device SP2. Abnormal sound output setting unit presetting permission / prohibition of alarm output, 8 is an acoustic line test switch for instructing to conduct a continuity test of the acoustic line Lsp, 9 is a power switch operated to turn on the power, 10 is a liquid crystal It is a display unit including a screen and an error indicator.

In such a structure, the external alarm output unit 3 has always reached the time interval set in the test interval setting unit 6 (for example, 1 hour, 12 hours, 24 hours, etc.). When, or acoustic line test switch 8
When the or power switch 9 is operated, a test alarm signal is output to perform a continuity test of the acoustic line Lsp.

When the acoustic line continuity detecting unit 4 detects the reply of the test alarm signal, it is judged that the connection state of the acoustic line Lsp is normal, and the test alarm signal cannot be detected within a predetermined time. A short circuit is judged by disconnection and fluctuation of voltage value. If the test alarm signal is a signal of an inaudible frequency (for example, 30 KHz or higher), the external acoustic device S
The signal output from P1 is inaudible to people.

Here, when the acoustic line continuity detecting unit 4 does not detect the test alarm signal, an abnormal display on the display unit 10 (for example, lighting or blinking of an abnormal indicator lamp, display of an abnormal message, etc.) is displayed. Alternatively, by outputting an abnormal sound from the internal audio device SP2 via the internal alarm output unit 5 (for example, a voice message such as “A sound line has an error”, an alarm alarm, a siren, etc.), The abnormality of Lsp is notified.

At this time, the abnormal sound output setting section 7 can be referenced to output an abnormal sound from the internal audio device SP2 in accordance with the set contents. That is, if the operation permission of the internal audio device SP2 is set, the abnormal sound is output, but if the operation prohibition is set, the abnormal sound is not output and only the abnormal display of the display unit 10 is performed. , Only the anomaly detection in the receiver B of the residential building.

Next, the continuity test of this acoustic line Lsp,
Fig.2, 3 shows the case where the fire detector S is issued again.
This will be described using the time chart of. FIG. 2 shows a case where the continuity test of the acoustic line Lsp has been started first,
As shown in (a), while the external alarm output unit 3 is outputting the test alarm signal, when the fire detector S is notified (,), the test alarm signal is output for a predetermined time t. After the above, the alarm output from the external audio device SP1 and the internal audio device SP2 in response to the alarm of the fire sensor S (only the internal audio device SP2 in the case of the first fire alarm) is performed (). Here, a predetermined time t for outputting the test alarm signal
May be a relatively short time (for example, 50 ms), as long as the signal can be detected by the acoustic line continuity detection unit 4, and therefore, after the output ends, the fire sensor S is activated. There is no problem even if the information is processed.

In (b), the acoustic circuit continuity detecting unit 4 does not detect the test alarm signal within the predetermined time t, and the display unit 1
An abnormal display of 0 and an abnormal sound output from the internal audio device SP2 (-) are shown when the fire detector S issues a warning (). At this time, the acoustic line Lsp
The process by the abnormality detection of is interrupted, and the operation for the alarm of the fire detector S is performed (,).

FIG. 3 shows a case where the fire sensor S is first notified. One of the fire detectors S issues a warning and outputs an alarm from the external audio device SP1 and the internal audio device SP2 (in the case of the first fire alarm, the internal audio device SP2).
() Only), even if the setting of the test interval setting unit 6 becomes the test execution time or the acoustic line test switch 8 or the power switch 9 is operated, the external alarm output unit 3 , The test alarm signal is not output to the audio line Lsp, the receiver A for the common part is restored, and the external audio device SP
1 and the alarm output from the internal audio device SP2 is stopped, the external alarm output unit 3 outputs the test alarm signal to the audio line Ls.
It is output to p (), and the connection state of the audio line Lsp is determined by the audio line continuity detection unit 4. Here, the case where the acoustic line continuity detection unit 4 does not detect the test alarm signal within the predetermined time t and issues an internal alarm or an abnormal display is shown (,).

Next, FIG. 4 shows another main structure of the receiver A for the common area. The receiver A for this common part has an acoustic line Lsp.
It does not have the continuity test function of the sound line L
An external audio device SP1 connected to sp and an alarm output setting unit 11 which sets in advance permission / prohibition of alarm output from the internal audio device SP2 incorporated therein.

In this configuration, when the fire detector S connected to the detector line Ls is notified or when the operation of the fire receiver A is abnormal, the setting of the alarm output setting unit 11 is performed. , The external audio device SP1 and the internal audio device SP2 are activated. The operation abnormality of the fire alarm receiver A includes, for example, a power supply abnormality and an abnormality in the sensor line Ls.

FIG. 5 shows the setting contents of the alarm output setting section 11. In this way, the permission / prohibition of the alarm output of the external audio device SP1 and the internal audio device SP2 set corresponding to item numbers 1 to 4 can be easily set by a dip switch or the like. Note that this setting may be set for each test switch or for each trouble that may occur.

[0036]

As can be understood from the above description, according to the fire receiver for common use common area of the present invention, the following effects can be obtained. According to claim 1, the termination of the acoustic line is connected to the acoustic line continuity detection unit through the signal line, the external alarm output unit outputs the test alarm signal, and the acoustic line continuity detection unit returns the signal. It is possible to confirm that the wiring of the acoustic line is normal by detecting with, and to detect a disconnection or a short-circuit state. Further, since the test alarm signal is a signal with an inaudible frequency, the signal output from the external audio device is not heard, and it is possible to avoid annoying the people in the neighboring units during the continuity test of the audio line.

According to the second aspect of the invention, if the time interval at which the external alarm output unit outputs the test alarm signal is set in the test interval setting unit, the continuity test of the acoustic line can be performed regularly and automatically.

According to the third aspect, the acoustic line test switch can be operated to arbitrarily conduct the continuity test of the acoustic line. Further, when the power switch is operated to turn on the power, the acoustic line must be turned on. A continuity test can also be performed. Therefore, the wiring can be checked immediately when the construction of the acoustic line is completed. According to the fourth aspect, when the acoustic line continuity detecting unit detects an abnormality in the acoustic line, this is notified by an abnormal display on the display unit or an abnormal sound output from the internal acoustic device. You can carry out inspections and construction.

According to the present invention, the permission / prohibition of the alarm output from the internal acoustic device can be set in advance in the acoustic line abnormality output setting section, so that the abnormality in the acoustic line can be detected only by the residential building receiver. If it is set to detect, for example, when disconnection of the acoustic line is detected in the middle of the night, an alarm sound does not cause annoyance to neighboring dwelling units. According to claim 6, when the fire detector issues a warning while conducting the continuity test of the acoustic line, the continuity test immediately ending is given priority and then the alarm for the fire detector is issued. Since the output is performed, the processing does not become complicated.

According to the seventh aspect, since the continuity test of the acoustic line is not performed while the fire detector is issuing the alarm and outputting the alarm, the alarm output is superimposed and the message content becomes difficult to hear. In addition, the alarm output is not interrupted. Further, according to the eighth aspect, when the alarm output is stopped, the continuity test of the acoustic line is performed, so that the abnormality detection of the acoustic line is not delayed without performing this test.

According to claim 9, if the permission / prohibition of the alarm output from the external audio device and the internal audio device is set in advance in the alarm output setting unit, when a fire sensor is issued, When an abnormality occurs in the operation of the fire receiver, an alarm output suitable for the situation can be output. Therefore, it is especially effective at the time of testing etc., so that the alarm sound does not disturb the surroundings, and even when trouble occurs at night, security guards and managers can respond only by the residential building receiver nearby it can.

[Brief description of drawings]

FIG. 1 is a block diagram showing an example of a main configuration of a fire receiver for shared use of common housing according to the present invention.

2 (a) and 2 (b) are time charts showing an example of the basic operation of the fire receiver for shared housing common use of the present invention.

FIG. 3 is a time chart showing an example of another basic operation of the fire receiver for common use area of the present invention.

FIG. 4 is a block diagram showing another example of the main configuration of the fire receiver for shared housing common use of the present invention.

FIG. 5 is a diagram showing an example of a configuration of an alarm output setting unit.

[Fig. 6] Fig. 6 is a configuration diagram of an automatic fire alarm system including a fire receiver for shared use in an apartment house.

FIG. 7 is a block diagram illustrating an example of an internal configuration of a fire receiver for shared use of common housing.

[Explanation of symbols]

A: Fire receiver for shared housing Lsp ... acoustic line SP1 ... External sound device Lspb ... Signal line SP2: Internal sound device Ls: Sensor line S: Fire detector 1 ... Information processing circuit 2 ... Fire detector 3 ... External alarm output section 4 ... Acoustic circuit continuity detector 5: Internal alarm output section 6 ... Test interval setting section 7: Abnormal sound output setting section 8 ... Acoustic circuit test switch 9 ... Power switch 10 ... Display 11 ... Alarm output setting section

─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-182589 (JP, A) JP-A-59-154596 (JP, A) JP-A-4-163693 (JP, A) (58) Field (Int.Cl. ⁷ , DB name) G08B 17/00 G08B 23/00 520 G08B 25/00 520 G08B 29/06

Claims (9)

(57) [Claims] [1] An apartment house installed in a common area such as a corridor or stairs of an apartment house, connected to an acoustic line to which an external audio device is connected, and connected to a residential receiver installed in a disaster prevention center or the like. In the common-use fire receiver, an external alarm output unit that outputs an alarm signal to the acoustic line, and an acoustic line continuity detection that is connected to the terminal end of the acoustic line via a signal line and detects the connection state of the acoustic line. And the acoustic line continuity detection unit detects a test alarm signal returned via the signal line when the external alarm output unit outputs a test alarm signal, and outputs the sound. The test alarm signal output from the external alarm output unit is configured to determine the connection state of the line .
An external sound that receives this signal as an inaudible frequency signal
The sound system produces sound based on the test alarm signal.
Fire receiver for common areas of common housing with no configuration . 2. The fire receiver for shared housing common use according to claim 1, further comprising a test interval setting unit that presets a time interval at which the external alarm output unit outputs a test alarm signal, The alarm output unit periodically outputs a test alarm signal to the acoustic line at the time interval set by the test interval setting unit, and the fire receiver for a common-use common area. 3. The fire receiver for shared housing common use according to claim 1, further comprising an acoustic line test switch, wherein the external alarm output unit is operated when the acoustic line test switch is operated or a power source is supplied. A fire receiver for shared housing common use, which outputs a test alarm signal to the acoustic line when the power is turned on by a switch. 4. The fire receiver for a common area of a shared house according to any one of claims 1 to 3, wherein the acoustic line continuity detection unit outputs the test alarm signal output from the external alarm output unit to the signal line. When it is not detected through, the fire receiver for the common-use common area is characterized by displaying an abnormal display on the display unit or outputting an abnormal sound from the internal audio device. 5. The fire receiver for a common area of a shared house according to claim 4, further comprising an abnormal sound output setting unit that presets permission / prohibition of operation of abnormal sound output from the internal acoustic device, If the continuity detection unit does not detect the test alarm signal output by the external alarm output unit via the signal line, operate the internal audio device according to the setting of the abnormal sound output setting unit. Fire receiver for common use in common areas. 6. The fire receiver for shared use in a common area according to any one of claims 1 to 5, further comprising a detector line to which a fire detector is connected, the external alarm output unit being a test alarm signal. When a fire detector connected to the above detector line is issued while outputting, after the output of the test alarm signal is finished,
A fire receiver for common use in a common housing, wherein alarms are output from the external audio device and the internal audio device in response to the notification of the fire detector. 7. The fire receiver for common use area according to claim 6, wherein a fire detector connected to the detector line outputs a warning and outputs an alarm from the external audio device and the internal audio device. The fire alarm for a common-use shared area, wherein the external alarm output unit does not output a test alarm signal to the acoustic line while the fire alarm is received. 8. The fire receiver for an apartment in a common area according to claim 7, wherein when the alarm output from the external audio device and the internal audio device for the alarm of the fire detector is stopped, the external alarm is issued. The output unit outputs a test alarm signal to the acoustic line, and the acoustic line continuity detection unit determines the connection state of the acoustic line. 9. It is installed in a common area such as a corridor or stairs of an apartment house, connects a detector line to which a fire detector is connected and an acoustic line to which an external audio device is connected, and is installed in a disaster prevention center or the like. In the fire receiver for shared housing common areas connected to the residential building receiver, enable / disable the alarm output from the external audio device connected to the above acoustic line and the internal audio device built into this fire receiver. The external acoustic device is provided with a preset alarm output setting unit, and when the fire detector is notified or when an abnormality occurs in the operation of the fire receiver, according to the setting of the alarm output setting unit. And a fire receiver for a common area of an apartment house, which operates the internal sound device.