JP4518702B2 - Door phone - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a door phone installed at a front door of a single-family house or an apartment house.
[0002]
[Prior art]
Conventionally, a door phone installed in an apartment house is disclosed in Japanese Patent Laid-Open No. 9-223289. Based on this gazette, a disaster prevention system for an apartment house including a door phone will be described. The door phone is installed at a front door outside the dwelling unit, and is connected to a housing information board inside the dwelling unit. In addition, terminal devices such as fire detectors and gas leak alarms are connected to the home information board.
[0003]
When an abnormality occurs in the dwelling unit, the terminal device detects an abnormal state and issues an alarm on the house information board.
[0004]
[Problems to be solved by the invention]
By the way, in recent years, fires due to arson have increased. Because arson is ignited from outside the dwelling unit, fire detectors in the dwelling unit as in the prior art cannot detect a fire due to arson until there is fire smoke inside the dwelling unit. A fire could not be detected.
[0005]
Therefore, an object of the present invention is to enable early detection of a fire outside a dwelling unit using a disaster prevention system for an apartment house.
[0006]
[Means for Solving the Problems]
The present invention includes a call section is connected to the housing information panel provided in the dwelling unit, and a speaker connected to vent story portion, a door phone installed in the front door of dwelling, the Doaho
A flame sensor for detecting a flame is attached to an opening provided in the lower part of the casing of the door, and the flame sensor is provided in the door phone main body so as to monitor the front from the direction directly below the door phone, and the flame sensor detects the flame. The person who gives an alarm from the speaker of the doorphone and fires
It is characterized by being intimidating .
[0007]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a system diagram of a disaster prevention system for an apartment house including the door phone of the present invention. In FIG. 1, 10 is a door phone installed at the entrance of a dwelling unit. The door phone 10 is connected to a housing information board 20 provided in the dwelling unit via a signal line S and a telephone line T. A repeater 11 is provided in the door phone 10. A fire detector 21 is provided in the dwelling unit, and the fire detector 21 is connected to the repeater 11 in the door phone 10 through a signal line.
[0008]
If the target dwelling unit is a single-family house, the disaster prevention system includes the above-described terminal devices such as the door phone 10, the house information panel 20, and the fire detector 21. In addition, if the target dwelling unit is a dwelling unit such as a condominium apartment, a dwelling unit receiver (not shown) that collectively monitors the dwelling information panel 20 of each dwelling unit is further installed in the management room.
[0009]
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 visitor visit to the house information board 20 through the calling circuit 14. Reference numeral 16 denotes a call unit, which is a circuit for exchanging electrical signals from the speaker 17 and the microphone 19 with the house information board 20.
[0010]
A test connection terminal 15 is connected to the repeater 11. By connecting a test instrument (not shown) to the connection terminal 15, the fire detector 21 connected to the repeater 11 can be tested (inspected) from outside the dwelling unit. The portion described so far is the same as the configuration of the conventional door phone.
[0011]
Reference numeral 18 denotes a sensor for detecting a flame provided in the main body of the door phone 10. The sensor 18 is composed of, for example, an infrared detection element that detects a wavelength of 4.3 μm that is characteristic of a flame, and preferably includes a plurality of elements that detect different wavelengths. Although the sensor 18 is connected to the repeater 11, it 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 an alarm means.
[0012]
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 flame is attached to the opening. The sensor 18 is installed slightly downward and is provided so as to monitor the front from the direction directly below the door phone 10. This is to make it possible to detect arson near the front door, and because arson is ignited by objects on the ground surface, it is considered that a fire occurs at a low position on the ground (or floor). It is a thing.
[0013]
Next, the structure of the house information board 20 will be described. Reference numeral 23 denotes a fire detection unit connected to the repeater 11, which is a part that detects a fire by a signal from the fire detector 21. A call detection unit 24 connected to the call unit 16 detects that the push button 13 has been pressed. When a handset 28 is lifted when the push button 13 is pressed, 25 is connected to the call unit 16 on the door phone 10 side so that a call can be established between them.
[0014]
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. A control unit 22 is connected to the fire detection unit 23, the call detection unit 24, the call unit 25, and the alarm unit 26, and controls various signals.
[0015]
Next, the operation of the door phone of the present invention will be described. When a fire occurs due to arson at the front door, the sensor 18 of the door phone 10 detects the flame of the fire. The 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 fire from the speaker 27.
[0016]
If the target dwelling unit is a condominium such as a condominium, the person of the dwelling unit can notify the manager using the intercom function of the housing information panel after confirming that a fire has occurred outside. . When the door sensor 10 is provided with the flame sensor 18 as described above, it is possible to detect a fire due to arson outside the dwelling unit and to use the notification system of the house information panel 20, so that it is easy to catch the arson.
[0017]
Further, when the sensor 18 detects a flame, the control unit 22 of the house information panel 20 operates the alarm unit 26. As a result, the alarm unit 26 operates the speaker 17 via the call unit 16 of the door phone 10. As an alarm method, for example, an LED is turned on and an alarm is given that “a fire has occurred”.
[0018]
When the alarm is issued from the door phone 10 in this manner, the notification to the neighborhood can be performed quickly, and the alarm can be performed when a flame such as a lighter for ignition is detected. It is possible to prevent a fire from being ignited by a fire type such as gasoline.
[0019]
Further, since the sensor 18 for detecting flame is connected to the repeater 11, it is possible to perform a functional test in the same manner as the fire detector 21 in the dwelling unit by connecting a test instrument to the connection terminal 15. .
[0020]
In the door phone 10, when the push button 13 is pressed, the call circuit 14 is operated, and the call detection unit 24 of the house information board 20 is operated. At this time, the control unit 22 sounds a ringing tone from the speaker 27 to inform the person in the dwelling that a visitor has come. When a person inside the dwelling lifts the handset 28 of the house information board 20, the call section 16 of the door phone 10 and the call section 25 of the house information board 20 are connected. The visitor can talk with a person in the dwelling unit via the speaker 17 and the microphone 19.
[0021]
In this way, 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 flames by a plurality of elements that detect different wavelengths, for example, infrared detection elements. Therefore, the human body such as a visitor who presses the push button of the door phone is not detected by mistake.
[0022]
Moreover, since the door phone 10 is installed outside, it has a rainproof structure, so that even if the sensor 18 is exposed to wind and rain, no trouble occurs.
[0023]
【The invention's effect】
Since the present invention is configured as described above and 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 the alarm of the door phone speaker is used, when a flame is detected, the occurrence of a fire can be notified to the neighborhood, and it can be intimidated for those who set it off. Can be prevented from being ignited.
[0024]
Moreover, since the sensor is connected to the housing information panel in the dwelling unit via the repeater, it is possible to warn the person in the dwelling unit that a fire has occurred outside. The person of the dwelling unit can catch the arson by using the intercom function of the housing information board, so that the manager can be notified.
[0025]
Moreover, since the sensor which detects a flame is connected to the repeater, it is possible to perform a function test in the same manner as a fire detector in a dwelling unit. Further, since the flame is detected by a plurality of elements that detect different wavelengths, a human body such as a visitor who presses the push button of the door phone is not erroneously detected.
[0026]
Also, the sensor is installed slightly downward, and is provided so as to monitor the front from the direction directly below the doorphone. For this reason, it is possible to detect arson near the front door.
[Brief description of the drawings]
FIG. 1 is a system diagram of a disaster prevention system for an apartment house including a doorphone of the present invention. FIG. 2 is an external view of a doorphone 10 of the present invention.
[Explanation of symbols]
10 door phone, 11 repeater, 12 body, 13 push button,
14 calling circuit, 15 connection terminal, 16 call section, 17 speaker,
18 sensor, 20 housing information board, 21 fire detector, 22 control unit,
23 Fire detection unit, 24 Call detection unit, 25 Calling unit, 26 Alarm unit,
27 speakers, 28 handsets, S signal lines, T call lines,

Claims (2)

A door phone installed at a front door of a dwelling unit, having a call unit connected to a housing information board provided in the dwelling unit and a speaker connected to the call unit,
Attaching a flame sensor for detecting a flame in an opening provided in the housing lower portion of the door phone, set the flame sensor to monitor forward from beneath the direction of the de Ahon the intercom body,
When the flame sensor detects a flame, an alarm is given from the speaker of the door phone and released.
A doorphone characterized by being intimidating against fire . An alarm unit is provided in the housing information panel,
The said house information board operates the said alarm part when the said flame sensor of the said doorphone detects a flame , The alarm is given from the said speaker via the call part of the said doorphone, The Claim 1 characterized by the above-mentioned. Door phone.

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