JP4602817B2 - Intercom system - Google Patents

Description

  The present invention relates to an intercom system that calls and makes a call between an entrance cordless handset and a home base phone, and more particularly to an intercom system that wirelessly transmits call information and alarm information detected by a sensor.

  Conventionally, fire detectors are obligated by the Fire Service Act in apartment houses such as apartments with an area of 300m2 or more and a capacity of 300 or more. In addition to housing fire detectors, apartments are often equipped with security devices for disaster prevention such as gas detectors, and are installed in conjunction with intercom systems. On the other hand, although it is not required by the Fire Service Act, there is an increasing demand for installation of security devices that can cope with disaster prevention and crime prevention, such as fire detectors, even in detached houses.

  For example, as shown in FIG. 2, the intercom system for disaster prevention / crime prevention in this detached house is installed in the entrance cordless handset 51 installed in the entrance, the indoor base unit 52 installed in the living room, the ceiling of the living room, the window, etc. And a security device such as a fire detector 53, a gas detector 54, a human body detection sensor 55, and a door lock sensor 56, and the indoor base unit 52 includes an entrance terminal 51, a fire detector / gas detector 53, and a human body detection. A sensor 54 and a door lock sensor 55 are connected by wire.

  For example, when the fire detector 53 detects a fire, a detection signal is transmitted from the fire detector 53 to the indoor parent device 52, so that it is possible to report that a fire has occurred in the indoor parent device 52. In order to make it possible to confirm the alarm notification in a house other than the room where the indoor base unit 52 is installed, an additional speaker terminal T50 for connecting the additional speaker 57 to the indoor base unit 52 by wire is provided. Some models are also available.

  As such an intercom system, a security intercom apparatus is disclosed that can output a plurality of voice signals and ringing tone signals with priority when they are superimposed and output (for example, Patent Documents). 1). Also, a security device is disclosed in which a sound alarm is sounded from a speaker when various alarms are issued, and the time since the alarm is issued and the contents of the alarm are displayed in pictures and text (for example, Patent Document 2). reference).

JP-A-11-55412 Japanese Patent Laid-Open No. 11-272773

  However, in the apparatus described in the background art, it is difficult to install a new wiring work in order to add a device for confirming the alarm in a house other than the room where the indoor base unit is installed. was there. In addition, since this device has a security device wired to an indoor base unit or a security device, there is a problem that a new wiring work has to be performed in order to retrofit the security device in a detached house. This new wiring work will increase the construction cost, which will hinder the strengthening of disaster prevention and crime prevention functions for detached houses.

  The present invention has been made in order to solve such a conventional difficulty, and simplifies the wiring work when retrofitting a security device such as a fire sensor and a human body sensor or a device that issues an alarm. An object of the present invention is to provide an intercom system that can be used.

  The intercom system of the present invention is connected to an entrance cordless handset installed at the entrance and to the entrance cordless handset to make a call in response to a call from the entrance cordless handset, and can be connected to an additional speaker. A master unit having a large additional speaker terminal and a security device installed in a house to detect abnormalities in daily life.

The intercom system according to the first aspect of the present invention is connected to an additional speaker terminal, and is output from the additional speaker terminal when an abnormality is detected by a security device connected to the main unit or when called from an entrance unit. Call / alarm signal detection circuit that detects call / alarm signal, transmitter for main unit that has radio wave transmission circuit that sends notification radio wave when call / alarm signal is detected, and notification radio wave from the transmitter for main unit It has a radio wave reception circuit for receiving, and a wireless reception alarm device that issues an alarm when a notification radio wave is received. The wireless reception alarm device includes a built-in speaker that outputs a warning sound as an alarm report and a warning lamp that lights an alarm display as an alarm report. The wireless reception alarm is an alarm stop button for stopping the alarm display that is lit by the warning sound and warning light output from the built-in speaker, and an alarm device that transmits an alarm stop radio wave when the alarm stop button is pressed. By providing a transmitter circuit, the alarm signal and alarm display are stopped when an alarm stop signal is received by the radio receiver circuit, and the alarm stop button is operated when the alarm stop button of the wireless reception alarm is pressed. This is to stop the warning sound output from the built-in speaker of the other wireless reception alarm device and the alarm display that is lit by the warning light.

According to such an intercom system according to the first aspect, the call / alarm notification radio waves sent from the transmitter for the master unit that can be connected to the additional speaker terminal of the master unit, for example, other than the room where the master unit is installed Because it is possible to receive with the wireless reception alarm installed in the house of the so that the alarm / alarm information can be issued by the alarm without connecting the alarm to the master become. In addition, the resident can confirm that the alarm has been issued by hearing and vision. In addition, even when multiple wireless reception alarms are installed, other wireless systems that do not operate the alarm stop button by simply stopping the alarm sound or alarm display of the wireless reception alarm with the alarm stop button. It is possible to stop the warning sound and alarm display that are output and lighted by the reception alarm.

  According to a second aspect of the present invention, in the intercom system according to the first aspect, a contact detection circuit that detects a make or break abnormality signal that is output when any of the security devices not connected to the master unit detects an abnormality, and a contact The wireless reception alarm device receives a security device abnormal radio wave by providing a security device transmitter having a radio wave transmission circuit that transmits a security device abnormal radio wave when the detection circuit detects a make or break abnormal signal. Will issue an alarm. Thereby, the alarm information from the security device can be issued by the alarm device without connecting the security device and the alarm device by wire.

The intercom system according to the third aspect of the present invention is the intercom system according to the first aspect, wherein the wireless reception alarm is built in when an alarm is issued from the transmitter for the master unit and when an alarm is issued from the transmitter for the security device. A CPU for controlling the sound pattern of the warning sound output from the speaker and the display pattern of the warning display lighted by the warning light to be different from each other or one of them is provided. This makes it possible to identify whether the alarm is issued from the master unit or the security device.

According to a fourth aspect of the present invention, in the interphone system according to any one of the first to third aspects, at least one of the transmitter for the main unit and the transmitter for the security device detects the voltage of the built-in battery. When it detects that the voltage of the built-in battery has fallen below the specified voltage, it sends a battery shortage notification radio wave and emits a battery shortage warning sound from the built-in speaker. When the alarm device receives a battery shortage signal, an alarm indicating that the battery is insufficient is issued. As a result, since the power source can be a battery, it is not necessary to carry out wiring work for the power source, and it is possible to prevent the transmitter from running out of the battery.

According to a fifth aspect of the present invention, in the interphone system according to any one of the second to fourth aspects, the base unit transmitter includes a contact detection circuit included in the security device transmitter, and an additional speaker terminal Instead, it is connected to a master unit having a terminal capable of outputting a make or break signal when a call / alarm is issued. Thereby, it is possible to cope with a parent device having a terminal capable of outputting a make or break signal at the time of calling / alarming without having an additional speaker terminal.

According to a sixth aspect of the present invention, in the interphone system according to any one of the second to fifth aspects, when the wireless reception alarm device receives the notification radio wave or the security device abnormal radio wave, the alarm device By transmitting a transmission radio wave including information on the notification radio wave or security device abnormal radio wave from the transmission circuit, and other wireless reception alarm devices that have received the transmission radio wave are caused to issue the same alarm as the wireless reception alarm device, the master unit In other wireless reception alarms that are far from the transmitter and do not receive radio waves, the alarm is issued via the wireless reception alarm close to the master transmitter. As a result, when multiple wireless reception alarms are installed , the transfer radio wave transmitted from one wireless reception alarm is received from other radio reception alarms that are too far away from the radio reception alarm. Since the alarm can be transmitted via another wireless reception alarm that has received the transfer radio wave, the wireless reception alarm can be installed regardless of the wireless communication distance.

  According to the intercom system of the present invention, since the communication between the alarm device provided in the house other than the room where the master unit is installed and the master unit can be performed wirelessly, the wiring work can be simplified. I was able to. In addition, since the communication between the master unit and the security device can be performed wirelessly, the wiring work when the security device is retrofitted can be simplified. Therefore, security devices can be installed at low cost.

  Hereinafter, preferred embodiments of the intercom system of the present invention will be described with reference to the drawings. FIG. 1 to be referred to is a diagram showing an intercom system of the present invention, where (a) is an overall configuration diagram, (b) is a block diagram of a transmitter for a parent device connected to a living room parent device, and (c) is a wireless type. FIG. 3D is a block diagram of a reception alarm device, and FIG. 4D is a block diagram of a sensor transmitter.

  As shown in FIG. 1, an intercom system according to a preferred embodiment of the present invention is installed in an entrance cordless handset 1 installed at the entrance of a detached house, wired to the entrance cordless handset 1 and installed in a living room. A home base unit (indoor base unit) 2 and a fire detector 4a, a gas detector 4b, a human body detection sensor 4c, and a door lock sensor 4d, which are security devices installed in the house to detect abnormalities in daily life. I have.

  The entrance cordless handset 1 includes a call button 11 that informs the resident that there is a visitor using the room base unit 2, and a handset speaker 12 and a handset microphone 13 for communicating with the room base unit 2. ing. There is also an entrance cordless handset equipped with a camera 14 for imaging visitors.

  The base unit 2 for the living room can be connected with a base unit speaker 21 and a base unit microphone 22 for making a call with the entrance handset 1, a call button 23 for making a call with a visitor and a call end, and an additional speaker. And an additional speaker terminal T1. In addition, when the entrance cordless handset 1 includes the camera 14, it includes a monitor 24 for displaying a visitor image captured by the camera 14. Furthermore, a door lock sensor 4d installed in the window of the living room is connected to the living room master unit 2 by wire. The extension speaker terminal T1 outputs a call signal when the call button 11 of the entrance cordless handset 1 is pressed, and an alarm signal when an abnormality is detected that the door lock sensor 4d detects that the door is opened. It has come to be.

  As shown in FIG. 1B, the extension speaker terminal T1 of the intercom system main unit 2 for the room is a door lock sensor connected to the main unit 2 for the call or from the front unit 1 A call / alarm signal detection circuit 57 that detects a call / alarm signal output from the extension speaker terminal T1 when an abnormality is detected by 4d, and a notification radio wave is transmitted when the call / alarm signal detection circuit 57 detects the call / alarm signal. A master transmitter 5d having a radio wave transmission circuit 52 is connected. The base transmitter 5d has an input terminal of the call / alarm signal detection circuit 57 connected to a base unit connection terminal T3 which is wired to the extension speaker terminal T1 of the base unit 2 for the room, and an output terminal of the radio wave transmission circuit 52. The output terminal of the radio wave transmission circuit 52 is connected to the transmission antenna 58.

  In addition, this intercom system has a radio wave receiving circuit 61 for receiving a notification radio wave from the base transmitter 5d, and wireless reception alarms 6a, 6b, 6c that issue an alarm when the notification radio wave is received. It has. The wireless reception alarm 6a is installed, for example, in a dressing room closest to the living room where the master unit 2 is installed, the wireless reception alarm 6b is installed, for example, in a bedroom, and the wireless reception alarm 6c is, for example, a child It is installed in the room.

  By sending such a master transmitter 5d and wireless reception alarm devices 6a, 6b, 6c to the interphone system, the master transmitter 5d can be connected to the additional speaker terminal T1 of the living room master 2. For example, the wireless radio alarm 6a, 6b, 6c installed in a house other than the room where the base unit 2 for the room is installed can receive the call / alarm notification radio wave. The reception / alarm information 6a, 6b, and 6c can be issued by the wireless reception alarm devices 6a, 6b, and 6c without connecting the reception alarm devices 6a, 6b, and 6c to the living room master device 2 by wire. It becomes like this.

  Further, as shown in FIG. 1C, the wireless reception alarm devices 6a, 6b, and 6c include a built-in speaker 63 that outputs a warning sound as an alarm report, and a warning lamp 65 that lights an alarm display as an alarm report. It has. As a result, the resident can confirm that the warning has been issued by hearing and vision. Note that the lighting here includes not only constant lighting but also blinking.

  Further, as shown in FIG. 1C, the wireless reception alarm devices 6a, 6b, and 6c are used when an alarm is issued from the transmitter 5d for the master unit, and the fire detector 4a, the gas detector 4b, and the human body detection sensor 4c. When the alarm is issued, the CPU 68 is controlled so that both or one of the sound pattern of the warning sound output from the built-in speaker 63 and the display pattern of the alarm display lighted by the warning lamp 65 are different. As a result, it is possible to identify whether the alarm is issued from any of the room master unit 2, the fire detector 4a, the gas detector 4b, or the human body detection sensor 4c.

  Further, as shown in FIG. 1C, the wireless reception alarm devices 6a, 6b, 6c are alarm stop buttons for stopping the alarm sound output from the built-in speaker 63 and the alarm display lit by the warning lamp 65. 66 and an alarm transmission circuit 67 that transmits an alarm stop radio wave when the alarm stop button 66 is pressed. By providing the alarm stop button 66 and the alarm transmitter circuit 67 in the wireless reception alarm devices 6a, 6b, 6c, when the alarm signal is received by the radio receiver circuit 61, the alarm sound and the alarm display are stopped. For example, when the alarm stop button 66 of the wireless reception alarm device 6a is pressed, the warning sound and warning light 65 output from the built-in speaker 63 of the other wireless reception alarm devices 6b and 6c that are not operating the alarm stop button are turned on. Alarm display can be stopped. As a result, even when multiple wireless reception alarms are installed, it is only necessary to stop the warning sound or alarm display of the wireless reception alarm with the alarm stop button, It is possible to stop the warning sound and warning display that are output and lit by the automatic reception alarm.

Further, as shown in FIG. 1 (c), the CPU 68 of the wireless reception alarm devices 6a, 6b, 6c receives an alarm radio wave or a security device abnormal radio wave from the alarm transmitter transmission circuit 67 when receiving the alarm radio wave or the security device abnormal radio wave. By transmitting the transfer radio wave including radio wave information and receiving the transfer radio wave, the other radio reception alarm device first issues the same alarm as the radio reception alarm device that received the report radio wave or the security device abnormal radio wave. In other wireless reception alarms that are far away from the transmitter 5d for the master unit and do not reach the radio waves, the transmitter has a function of issuing a notification via the wireless reception alarm unit close to the transmitter 5d for the master unit. Yes. As a result, when multiple wireless reception alarms are installed , the transfer radio wave transmitted from one wireless reception alarm is received from other radio reception alarms that are too far away from the radio reception alarm. Since the alarm can be transmitted via another wireless reception alarm that has received the transfer radio wave, the wireless reception alarm can be installed regardless of the wireless communication distance. Therefore, even when the transfer radio wave from the master transmitter 5d does not reach the wireless reception alarm device 6c installed in the child room, the transfer radio wave is closest to the room where the room master unit 2 is installed. The wireless reception alarm device 6a installed in the dressing room can be transmitted to the wireless reception alarm device 6c installed in the child room via the wireless reception alarm device 6b installed in the bedroom near the dressing room. It becomes like this.

  In such wireless reception alarm devices 6a, 6b, and 6c, the input terminal of the radio wave reception circuit 61 is connected to the reception antenna 69 and the output terminal is connected to the CPU 68. The built-in speaker 63 is connected to the CPU 68 via the warning sound generating circuit 62, and the warning lamp 65 is connected to the CPU 68 via the warning lamp driving circuit 64. Further, the alarm stop button 66 is connected to a CPU 68, and a transmission antenna 70 is connected to the CPU 68 via an alarm transmission circuit 67.

  Further, as shown in FIG. 1 (d), the fire detector 4a, the gas detector 4b, and the human body detection sensor 4c are respectively a contact detection circuit 51 that detects a make or break abnormality signal that is output when an abnormality is detected, and a contact detection circuit. When 51 detects a make or break abnormality signal, it is connected to transmitters 5a, 5b, and 5c for security equipment having a radio wave transmission circuit 52 that transmits a security device abnormal radio wave. As a result, the fire detector 4a, the gas detector 4b, the human body detection sensor 4c and the wireless reception alarm devices 6a, 6b, 6c can be connected from the fire detector 4a, the gas detector 4b, and the human body detection sensor 4c without wired connection. The alarm information can be issued by the radio reception alarm devices 6a, 6b, 6c.

  Further, the transmitter 5d for the master unit and the transmitters 5a, 5b, 5c for the security device detect the voltage of the battery 53 and the built-in battery 53 and detect that the voltage is below a predetermined voltage. A voltage detection circuit 54 for sending a shortage notification radio wave, and a battery for outputting a battery shortage warning sound from the built-in speaker 56 when the voltage detection circuit 54 detects that the voltage of the built-in battery 53 has become equal to or lower than a predetermined voltage. And an insufficient remaining amount warning sound generation circuit 55. As a result, since the power source can be a battery, it is not necessary to carry out wiring work for the power source, and it is possible to prevent the transmitter from running out of the battery. Note that the base unit transmitter 5d and the security device transmitters 5a, 5b, and 5c may simplify wiring work depending on the installation location. In that case, the battery 53 and the voltage detection circuit 54 may not be provided.

  The battery 53 of the parent machine transmitter 5d and the security device transmitters 5a, 5b, and 5c is connected to the radio wave transmission circuit 52 through the voltage detection circuit 54, and the battery remaining shortage alarm sound generation circuit 55 is input. The terminal is connected to the output terminal of the voltage detection circuit 54, and the output terminal is connected to the built-in speaker 56 and the input terminal of the radio wave transmission circuit 52. The contact detection circuit 51 has an input terminal connected to a security device connection terminal T4 for connecting the security devices 4a, 4b, and 4c, and an output terminal connected to an input terminal of the radio wave transmission circuit 52. The output terminal of the radio wave transmission circuit 52 is connected to the transmission antenna 58.

  The operation of the intercom system configured as described above will be described below.

  When a visitor performs a call operation for calling a resident in the house with the call button 11 of the entrance cordless handset 1 installed at the entrance, the entrance cordless handset 1 sends a call signal to the room base phone 2. When the camera 14 is provided, the video signal is also sent to the living room master unit 2. The room master unit 2 that has received the call signal outputs a ringing tone from the master unit speaker 21 to notify that there is a call from the front door unit 1 and sends a call signal to the additional speaker terminal T1. The master transmitter 5d wired to the additional speaker terminal T1 detects the call signal by the call / alarm signal detection circuit 57 via the master connection terminal T3 and detects the call signal by the radio wave transmission circuit 52. Send a detection signal to the effect. The radio wave transmission circuit 52 transmits a notification radio wave based on the detection signal from the transmission antenna 58.

  The wireless reception alarm devices 6a, 6b, and 6c that have received the notification radio wave by the reception antenna 69 detect the notification radio waves by the radio wave reception circuit 61 and send them to the CPU 68. The CPU 68 outputs a ringing sound from the built-in speaker 63 via the warning sound generating circuit 62 based on the notification radio wave, and lights the calling display on the warning lamp 65 via the warning lamp driving circuit 64. If the radio wave transmitted from the parent machine transmitter 5d does not reach the wireless reception alarm device 6c installed in the child room, the wireless reception alarm devices 6a, 6b, 6c are connected to the living room parent device 2. Transfer radio waves transmitted from the wireless reception alarm device 6a installed in the dressing room closest to the installed living room via the wireless reception alarm device 6b installed in the bedroom near the dressing room. It functions to transmit to the alarm device 6c. Specifically, the notification radio wave transmitted from the master transmitter 5 d is received by the reception antenna 69 of the wireless reception alarm device 6 a and sent to the CPU 68 via the radio wave reception circuit 61. The CPU 68 transmits a transfer radio wave including information on the notification radio wave from the transmission antenna 70 via the alarm transmitter circuit 67. The transferred radio wave is received by the receiving antenna 69 of the wireless reception alarm device 6 b and sent to the CPU 68 via the radio wave receiving circuit 61. The CPU 68 transmits the transfer radio wave transferred from the wireless reception alarm device 6 a from the transmission antenna 70 via the alarm device transmission circuit 67. The transferred radio wave is received by the receiving antenna 69 of the wireless reception alarm device 6 c and sent to the CPU 68 via the radio wave receiving circuit 61. Therefore, each CPU 68 of the wireless reception alarm devices 6a, 6b, 6c outputs a ringing tone from the built-in speaker 63 via the warning sound generation circuit 62 based on the notification radio wave, and warns the call display via the warning light driving circuit 64. The lamp 65 can be turned on.

  When the door lock sensor 4d detects that the door has been opened, the living room master unit 2 outputs an alarm sound from the handset speaker 12 to notify that an abnormality has been detected by the door lock sensor 4d, and an additional speaker terminal An alarm signal is sent to T1. The master transmitter 5d wired to the additional speaker terminal T1 detects the alarm signal by the call / alarm signal detection circuit 57 via the master unit connection terminal T3 and detects the alarm signal by the radio wave transmission circuit 52. Send a detection signal to the effect. The radio wave transmission circuit 52 transmits a notification radio wave from the transmission antenna 58 based on the detection signal.

  The wireless reception alarm devices 6a, 6b, and 6c that have received the notification radio wave by the reception antenna 69 detect the notification radio waves by the radio wave reception circuit 61 and send them to the CPU 68. The CPU 68 outputs a warning sound from the built-in speaker 63 via the warning sound generating circuit 62 based on the notification radio wave, and turns on a warning display on the warning lamp 65 via the warning lamp driving circuit 64. In addition, when the transfer radio wave from the transmitter 5d for the master unit does not reach the wireless reception alarm device 6c installed in the child room, as described above, the wireless reception alarm devices 6a, 6b, 6c The transfer radio wave transmitted from the wireless reception alarm device 6a installed in the dressing room closest to the living room where the parent machine 2 is installed passes through the wireless reception alarm device 6b installed in the bedroom near the dressing room. And function to transmit to the wireless reception alarm device 6c.

  Next, the operation of the intercom system when a security abnormality is detected by the fire detector 4a, the gas detector 4b, and the human body detection sensor 4c, which are security devices, will be described. Since the operation is the same in any security device, only the case of the fire detector 4a will be described. The fire detector 4a transmits a make abnormality signal when an abnormality is detected.

  When the fire detector 4a detects that a fire has occurred, the fire detector 4a outputs a make abnormality signal to the contact detection circuit 51 via the security device connection terminal T4 of the security device transmitter 5a. The contact detection circuit 51 detects a make abnormality signal and sends a detection signal indicating that the make abnormality signal has been detected to the radio wave transmission circuit 52. The radio wave transmission circuit 52 transmits a notification radio wave from the transmission antenna 58 based on the detection signal.

  The wireless reception alarm devices 6a, 6b, and 6c that have received the notification radio wave by the reception antenna 69 detect the notification radio waves by the radio wave reception circuit 61 and send them to the CPU 68. The CPU 68 outputs a warning sound from the built-in speaker 63 via the warning sound generating circuit 62 based on the notification radio wave, and turns on a warning display on the warning lamp 65 via the warning lamp driving circuit 64.

  In order to stop the warning sound output from the built-in speaker 63 and the warning display turned on by the warning lamp 65, for example, the warning stop button 66 of the wireless reception alarm device 6a is pressed. When the alarm stop button 66 is pressed, an alarm stop signal is sent to the CPU 68, and the CPU 68 displays an alarm sound output from the built-in speaker 63 and an alarm display that is lit by the alarm lamp 65, the alarm sound generation circuit 62 and the alarm lamp drive. It stops via the circuit 64 and transmits a notification radio wave based on the alarm stop signal from the transmission antenna 70 via the alarm transmitter circuit 67.

  The wireless reception alarm devices 6b and 6c that have received the notification radio wave based on the alarm stop signal transmitted from the wireless reception alarm device 6a by the reception antenna 69 detect the notification radio waves by the radio wave reception circuit 61 and send them to the CPU 68. The CPU 68 stops the warning sound output from the built-in speaker 63 based on the notification radio wave and the warning display turned on by the warning lamp 65 via the warning sound generation circuit 62 and the warning lamp drive circuit 64.

  When the transfer radio wave from the security device transmitter 5a does not reach the wireless reception alarm device 6c installed in the child room, as described above, the wireless reception alarm devices 6a, 6b, 6c The transfer radio wave transmitted from the wireless reception alarm device 6a installed in the dressing room closest to the living room where the parent machine 2 is installed passes through the wireless reception alarm device 6b installed in the bedroom near the dressing room. And function to transmit to the wireless reception alarm device 6c.

  In the transmitter 5d for the master unit and the transmitters 5a, 5b, and 5c for the security device, when the voltage of the built-in battery 53 becomes a predetermined voltage or less, the voltage detection circuit 54 detects that, and the radio wave transmission circuit 52 The battery shortage notification radio wave is transmitted from the transmission antenna 58 via the battery, and the battery shortage warning sound is output from the built-in speaker 56 via the battery shortage warning sound generation circuit 55. The wireless reception alarm devices 6a, 6b, and 6c that have received the battery shortage notification radio wave by the reception antenna 69 detect the battery shortage notification radio waves by the radio wave reception circuit 61 and send them to the CPU 68. The CPU 68 outputs a battery shortage warning sound from the built-in speaker 63 via the warning sound generation circuit 62 based on the battery low battery notification radio wave, and displays a battery low warning display via the warning light drive circuit 64 as a warning light 65. Lights up.

  In addition, each of the CPUs 68 of the wireless reception alarm devices 6a, 6b, and 6c is configured to issue an alarm from the alarm transmitter from the master transmitter 5d and from the fire detector 4a, the gas detector 4b, and the human body detection sensor 4c. At the time of reporting, both or one of the sound pattern of the warning sound output from the built-in speaker 63 and the display pattern of the warning display that is lit by the warning lamp 65 can be changed. In the case of an audio pattern, for example, the music is changed.

  In the embodiment of the present invention described above, the master transmitter 5d is connected to the living room master unit 2 having the additional speaker terminal T3 by wire, but this is not restrictive. The parent machine transmitter 5d may be connected to the living room parent machine 2 having one or a plurality of contact output terminals T2 capable of outputting a make or break signal serving as a signal or an alarm signal. In this case, as shown in FIG. 1 (b), the contact transmitter 51d is provided in the base transmitter 5d. An input terminal of the contact detection circuit 51 is connected to a base unit connection terminal T5 that is wired to a contact output terminal T2 of the room base unit 2, and an output terminal is connected to an input terminal of the radio wave transmission circuit 52. Therefore, when the contact detection circuit 51 of the master transmitter 5d detects the make or break signal output from the room master unit 2, a detection signal indicating that the make or break signal has been detected is sent to the radio wave transmission circuit 52. The radio wave transmission circuit 52 can transmit a notification radio wave based on the detection signal from the transmission antenna 58.

  In the above-described embodiment of the present invention, the door lock sensor 4d is connected to the living room master unit 2 by wire. However, the present invention is not limited thereto, and other security devices may be connected in advance to the living room base unit 2 by wire. Similar actions and effects can be obtained.

  Furthermore, in the above-described embodiment of the present invention, the present invention is applied to a detached house, but it is needless to say that the present invention can be applied to an apartment house as well.

FIG. 2 is an explanatory diagram showing a preferred embodiment example in the intercom system of the present invention. It is a whole block diagram which shows the conventional intercom system.

1 …… Gate unit 2 …… Home unit T1 …… Extended speaker terminal T2 …… Contact output terminal 4a …… Fire detector (security device)
4b …… Gas detector (security device)
4c: Human body detection sensor (security device)
4d: Door lock sensor (security device)
5a, 5b, 5c: Transmitter for security device 5d: Transmitter for parent device 51: Contact detection circuit 52 ... Radio wave transmission circuit 54 ... Voltage detection circuit 56 ... Built-in speaker 57 ... Call / alarm signal Detection circuit 6a, 6b, 6c …… Wireless reception alarm 61 …… Radio wave reception circuit 63 …… Built-in speaker 65 …… Warning light 66 …… Alarm stop button 67 …… Alarm transmission circuit 68 …… CPU

Claims (6)

An entrance cordless handset (1) installed at the entrance, and an additional speaker connected to the entrance cordless handset to make a call in response to a call from the entrance cordless handset and installed in a living room, to which an additional speaker can be connected A master unit (2) having a terminal (T1), and security devices (4a, 4b, 4c, 4d) installed in a house to detect abnormalities in life,
Call / alarm signal that is connected to the additional speaker terminal and that is output from the additional speaker terminal when a call is made from the entrance slave or when an abnormality is detected by any of the security devices (4d) connected to the master A call / alarm signal detection circuit (57) for detecting a call, a transmitter (5d) for a master unit having a radio wave transmission circuit (52) for sending a notification radio wave when the call / alarm signal is detected, and the master unit transmission A radio reception alarm device (6a, 6b, 6c) having a radio wave receiving circuit (61) for receiving the notification radio wave from a machine and issuing an alarm when the notification radio wave is received;
The wireless reception alarm device includes a built-in speaker (63) that outputs a warning sound as the alarm notification, and a warning lamp (65) that lights an alarm display as the alarm notification,
The wireless reception alarm (6a) includes an alarm stop button (66) for stopping the alarm display that is lit by the warning sound and the warning light output from the built-in speaker, and the alarm stop button. An alarm transmitter transmission circuit (67) that transmits an alarm stop radio wave when pressed, and when the alarm stop radio wave is received by the radio wave reception circuit, the alarm sound and the alarm display are stopped, and When the alarm stop button of the wireless reception alarm device (6a) is pressed, the warning sound output from the built-in speaker of the other wireless reception alarm devices (6b, 6c) not operating the alarm stop button and the An intercom system characterized by stopping the alarm display that is lit by a warning light .   A contact detection circuit (51) for detecting a make or break abnormality signal output when any of the security devices (4a, 4b, 4c) not connected to the parent device detects an abnormality, and the contact detection circuit includes the make Alternatively, the security device abnormal radio wave is received by including a security device transmitter (5a, 5b, 5c) having a radio wave transmission circuit (52) for transmitting a security device abnormal radio wave when a break abnormal signal is detected. 2. The intercom system according to claim 1, wherein an alarm is issued from the wireless reception alarm. The wireless reception alarm is a voice pattern of the warning sound output from the built-in speaker at the time of the alarm issuance from the base unit transmitter and the alarm issuance from the security device transmitter. The intercom system according to claim 1, further comprising a CPU (68) for controlling so that both or one of the display patterns of the alarm display illuminated by the warning light is different. At least one of the transmitter for the master unit and the transmitter for the security device includes a voltage detection circuit (54) that detects the voltage of the built-in battery, and detects that the voltage of the built-in battery has become equal to or lower than a predetermined voltage. When a battery shortage notification radio wave is transmitted and a built-in speaker (56) emits a battery shortage warning sound, the battery reception shortage occurs when the wireless reception alarm is received. The intercom system according to any one of claims 1 to 3 , wherein an alarm indicating that the alarm is issued is issued. The transmitter for the parent device includes the contact detection circuit, and is connected to a parent device having a terminal (T2) that can output a make or break signal when calling / alarm is issued instead of the additional speaker terminal. The intercom system according to any one of claims 2 to 4, characterized in that: The wireless reception alarm (6a), when receiving the notification radio wave or the security device abnormal radio wave, transmits a transfer radio wave including information on the notification radio wave or the security device abnormal radio wave from the alarm transmission circuit. The other radio reception alarm device (6b) that has received the transfer radio wave generates the same alarm as that of the radio reception alarm device (6a), so that the radio wave is far away from the master transmitter. 6. The other wireless reception alarm device (6c) which does not reach, and issues a notification via the wireless reception alarm device close to the transmitter for the master unit . The intercom system according to claim 1 .

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