JP2002368887A - Intercom - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an intercom that can early detect a fire at the outside of a house due to arson by utilizing a disaster prevention system for a multiple dwelling house. SOLUTION: The intercom 10 is installed at an entrance of a house and includes a sensor 18 sensing a flame in an intercom main body 12. When the sensor 18 senses a flame, speakers 17, 27 raise an alarm. The sensor is connected to a house information panel 20 installed in the house via a relaying device 11 provided to the intercom main body. The relaying device 11 is provided with a test use connection terminal 15, to inspect the sensor 18.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door phone installed at the entrance of a single-family dwelling unit or a dwelling unit of an apartment house.

[0002]

2. Description of the Related Art A door phone installed in an apartment house has been disclosed in Japanese Patent Laid-Open No. 9-223289. Based on this publication, a disaster prevention system for an apartment house including a door phone will be described. The doorphone is installed at the entrance outside the dwelling unit, and is connected to a house information panel inside the dwelling unit. Terminal devices such as a fire detector and a gas leak alarm are connected to the house information panel.

[0003] When an abnormality occurs in a dwelling unit, the terminal device detects the abnormal state and issues an alarm on the house information panel.

[0004]

Incidentally, fires caused by arson have increased in recent years. Since arson is ignited from outside the dwelling unit, a fire detector in the dwelling unit as in the prior art cannot detect a fire due to the arson until the smoke of the fire enters the dwelling unit. No fire could be detected.

Accordingly, an object of the present invention is to enable early detection of a fire outside a dwelling house by utilizing a disaster prevention system for an apartment house.

[0006]

SUMMARY OF THE INVENTION The present invention is characterized in that a sensor for detecting a flame is provided in the main body of a door phone installed at the entrance of a dwelling unit.

[0007]

FIG. 1 is a system diagram of a disaster prevention system for an apartment house including a door phone according to the present invention. In FIG. 1, reference numeral 10 denotes a door phone installed at the entrance of a dwelling unit. The door phone 10 is a housing information panel 2 provided in a dwelling unit.
0 and a signal line S or a communication line T. In the door phone 10, a repeater 11 is provided. In the dwelling unit, a fire detector 21 is provided.
It is connected to repeater 11 in door phone 10 via a signal line.

If the target dwelling unit is a single-family house, the disaster prevention system is composed of the terminal devices such as the door phone 10, the house information panel 20, and the fire detector 21 described above.
If the target dwelling unit is a dwelling unit such as a condominium apartment, a dwelling receiver (not shown) that collectively monitors the dwelling unit information panel 20 of each dwelling unit will be further installed in the management room.

Next, the configuration inside the door phone 10 will be described. Reference numeral 13 denotes a push button provided on the surface of the door phone main body, and notifies the house information panel 20 of the visitor's visit via the calling circuit 14. Reference numeral 16 denotes a communication unit, which is a circuit for exchanging electric signals of the speaker 17 and the microphone 19 with the house information panel 20.

Reference numeral 15 denotes a test connection terminal connected to the repeater 11. By connecting a test device (not shown) to the connection terminal 15, the fire detector 21 connected to the repeater 11 can be tested (checked) from outside the dwelling unit. The parts described so far are the same as those of the conventional door phone.

Reference numeral 18 denotes a sensor provided in the main body of the door phone 10 for detecting a flame. The sensor 18 is constituted by, for example, an infrared detecting element for detecting a wavelength of 4.3 μm peculiar to the flame, and preferably comprises a plurality of elements for detecting different wavelengths. The sensor 18 is connected to the repeater 11, but may be connected to the signal line S to which the fire detector 21 is connected. In addition to the speaker 17, a light emitting element such as an LED may be provided as alarm means.

FIG. 2 is an external view of the door phone 10 of the present invention. An opening is provided in the lower part of the main body 12 of the door phone 10, and a sensor 18 for detecting a flame is attached to the opening. The sensor 18 is installed slightly downward, and is provided so as to monitor the front from just below the door phone 10. This is to make it possible to detect an arson near the door at the entrance, and because the arson ignites an object on the ground surface, consider that a fire may occur at a low position on the ground (or floor). It was done.

Next, the configuration of the house information panel 20 will be described. Reference numeral 23 denotes a fire detection unit connected to the repeater 11, which detects a fire based on a signal from the fire detector 21. Reference numeral 24 denotes a call detection unit connected to the communication unit 16, which detects that the push button 13 has been pressed. 25
Is a communication unit. When the handset 28 is lifted when the push button 13 is pressed, the communication unit 16 is connected to the communication unit 16 of the door phone 10 so that a call can be made between the two.

Reference numeral 26 denotes an alarm unit which issues an alarm from the speaker 27 when the fire detector 21 or the sensor 18 operates or when the push button 13 is pressed. Note that a voice synthesis circuit may be provided instead of the speaker 27. Reference numeral 22 denotes a control unit, which includes a fire detection unit 23, a call detection unit 24, and a call unit 2.
5 and an alarm unit 26 for controlling various signals.

Next, the operation of the door phone of the present invention will be described. When a fire occurs due to arson at the entrance,
The sensor 18 of the door phone 10 detects a fire flame. A fire signal generated from the sensor 18 is output to the house information panel 20 via the repeater 11. With the input of the fire signal to the fire detection unit 23 of the house information panel 20, the control unit 22 operates the alarm unit 26 to warn the occurrence of a fire from the speaker 27.

If the target dwelling unit is a condominium, such as a condominium, the dwelling unit uses the intercom function of the housing information panel to notify the manager after confirming that a fire has occurred outside. Can do it. When the flame sensor 18 is provided in the door phone 10 in this manner, it is possible to detect a fire due to arson or the like outside the dwelling unit, and it is possible to use the notification system of the house information panel 20, so that it is easy to catch the arsonist.

When the sensor 18 detects a flame, the control unit 22 of the house information panel 20 operates the alarm unit 26. Thereby, the alarm unit 26 operates the speaker 17 via the communication unit 16 of the door phone 10. As a warning method,
For example, the LED is turned on, and a warning that "a fire has occurred" is issued.

If an alarm is issued from the door phone 10 as described above, it is possible to quickly inform the neighborhood and to issue an alarm when a flame such as a lighter for ignition is detected.
It can intimidate arsoners and prevent fires such as gasoline from igniting and increasing the size of the fire.

The sensor 18 for detecting the flame is provided with the relay 1
1, it is possible to perform a functional test by connecting a test device to the connection terminal 15 in the same manner as the fire detector 21 in a dwelling unit.

In the door phone 10, when the push button 13 is pressed, the calling circuit 14 operates and the call detecting section 24 of the house information panel 20 operates. At this time, the control unit 2
2 sounds a ringing tone from the speaker 27 to notify the person in the dwelling unit that the visitor has come. When the person in the dwelling unit lifts the handset 28 of the house information panel 20, the communication unit 16 of the door phone 10 and the communication unit 25 of the house information panel 20 are connected. Then, the visitor receives the speaker 17 and the microphone 1
9 and can communicate with people in the dwelling unit.

As described above, humans frequently enter the front of the door phone 10, in other words, within the field of view of the sensor 18, but the sensor 18 detects the flame by a plurality of elements that detect different wavelengths, for example, infrared detecting elements. As a result, a human body such as a visitor pressing the push button of the door phone is not erroneously detected.

Further, since the door phone 10 is installed outside and has a rain-proof structure, no problem occurs even when the sensor 18 is exposed to wind and rain.

[0023]

The present invention is constructed as described above, and since a sensor for detecting a flame is provided in the door phone, it is possible to detect a fire caused by arson outside the dwelling unit. In addition, since an alarm is issued from the speaker of the door phone, when a flame is detected, the occurrence of a fire can be notified to the neighborhood, and the arson can be intimidated. Can be prevented from being ignited.

Further, since the sensor is connected to the house information panel in the dwelling unit via the repeater, it is possible to warn a person in the dwelling unit that a fire has occurred outside. The dwelling unit can use the intercom function of the housing information panel to notify the manager, which makes it easier to catch the arsonist.

Further, since the sensor for detecting the flame is connected to the repeater, it is possible to perform a functional test similarly to the fire detector in the dwelling unit. Furthermore, since the flame is detected by a plurality of elements that detect different wavelengths,
A human body such as a visitor pressing a door phone push button is not erroneously detected.

The sensor is installed slightly downward so as to monitor the front from just below the door phone.
Therefore, it is possible to detect arson near the door at the entrance.

[Brief description of the drawings]

FIG. 1 is a system diagram of a disaster prevention system for an apartment house including a door phone according to the present invention.

FIG. 2 is an external view of a door phone 10 of the present invention.

[Explanation of symbols]

10 door phone, 11 repeater, 12 body, 1
3 push button, 14 calling circuit, 15 connection terminal, 16 communication section, 17 speaker, 18 sensor, 20 house information panel, 21 fire detector, 22
Control unit, 23 fire detection unit, 24 call detection unit,
25 communication part, 26 alarm part, 27 speaker, 2
8 handset, S signal line, T communication line,

Claims (5)

[Claims] 1. A door phone installed at a front door of a dwelling unit, wherein a sensor for detecting a flame is provided in the door phone main body. 2. The intercom according to claim 1, wherein a warning is issued from a speaker when the sensor detects a flame. 3. The sensor is connected to a housing information panel provided in the dwelling unit via a relay provided on the door phone body,
The doorphone according to claim 1 or 2, wherein a fire detector provided in the dwelling unit is connected to the repeater via a signal line, and the repeater is provided with a connection terminal for testing. 4. The sensor according to claim 1, wherein said sensor comprises a plurality of elements for detecting different wavelengths.
The doorphone described. 5. The door phone according to claim 1, wherein the sensor is installed slightly downward, and is provided so as to monitor the front from just below the door phone.