JP2001279999A - Device for monitoring opening/closing of entrance door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a device for monitoring the opening/closing of an entrance door capable of letting a member of a family who has come home know whether the entrance door is opened and closed or not during his absence before he opens the entrance door. SOLUTION: The device for monitoring the opening/closing of an entrance door is provided with a detecting means 10 to detect the opening and closing of the entrance door, storage means 40 to store information detected by the detecting means 10, display 50 to display information stored in the storage means 40, switch mechanism 60 to display information on the display 50, first erasing means 70 to erase information stored in the storage mans 40, and second erasing means 80 to erase information displayed on the display 50. It is possible for a member of a family who has come home to display and see the information on the opening and closing of the entrance door stored in the storage means 40 on the display 50.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an entrance door opening / closing monitoring device for storing entrance door opening / closing information when the user is away from home and transmitting the information to a person who has returned home.

[0002]

2. Description of the Related Art In many cases, when a house is absent, an entrance door is opened and an illegal intruder intrudes into an abandoned house to rob money or stay at home. In such a case, the color of the gold goods in the absence house is usually performed by the trespasser with the entrance door closed again by the trespasser. The reason is that a trespasser wants to avoid being informed by a passer-by or the like that the trespasser has entered the house. In such a case, the person who came home will open the entrance door without knowing that the trespasser has invaded the absence house, and enter the house with the entrance door opened. There are cases. In addition, there are many cases where a housekeeper is harmed to a trespasser who has entered the house. This is especially frequent for children living alone in urban areas.

[0003] In order to avoid the danger of the house being harmed by an illegal intruder who has entered such an abandoned house, the entrance door of an urban apartment or the like has a double lock structure or an electronic lock structure. It has a structure that cannot be easily opened.

[0004]

However, even if the entrance door has a double lock structure or an electronic lock structure that cannot be easily opened as described above, an unauthorized intruder cannot use the double lock structure or the electronic lock structure. The entrance door with the lock structure is cleverly opened and intrudes into the absence house. And there is no end to the case where a person who came home from a trespasser who invaded the abandoned house suffered harm.

Therefore, as a result of earnest research, the present inventor has determined that in order to prevent such a house returning home from being harmed by a trespasser who has invaded his home, Before opening the entrance door and entering the house, the inventor of the present application has conceived that the entrance door opening / closing monitoring device should be able to know whether or not the entrance door has been opened / closed during absence. When the entrance door opens and closes during the absence, the entrance door is opened and closed by the entrance door. Before being harmed by a trespasser who has invaded the house, the person in the house must stop entering the house and inform the police that the trespasser has entered the house, I thought I should be able to ask for help. And, for that purpose, when leaving the house, etc., the entrance door opening / closing monitoring device, which allows the person who came home to know the opening and closing information of the entrance door being away before opening the entrance door and entering the house Was developed.

That is, the present invention relates to a front door opening / closing monitoring device which enables a person who has returned home to know the front door opening / closing information when the house is absent or the like before opening the front door and entering the house. The purpose is to get.

[0007]

In order to achieve the above object, an apparatus for monitoring the opening and closing of an entrance door according to the present invention includes a detecting means for detecting that the entrance door has been opened and closed, and a detecting means for detecting that the entrance door has been opened and closed. Storage means for storing the opening and closing information of the entrance door, a display for displaying the opening and closing information of the entrance door stored in the storage means, a switch mechanism for displaying the opening and closing information of the entrance door on the display, and the storage First erasing means for erasing the opening / closing information of the entrance door stored in the means, and second erasing means for erasing the opening / closing information of the entrance door displayed on the display,
A plurality of push button switches which are pressed by a finger, setting means for setting the order and number of times of pressing at least two or more of the plurality of push button switches, and setting means for setting the setting means; According to the order and the number of times each of the two or more push button switches is pressed,
When the two or more push-button switches are pressed, the display means displays on the display the opening / closing information of the entrance door stored in the storage means.

In this door opening / closing monitoring device, the opening / closing monitoring device is provided on the outer wall of a house near the entrance door or the like, and the push button switch and the indicator of the switch mechanism are exposed outside the house. By doing so, if the entrance door is opened and closed by an unauthorized intruder during absence, it can be detected by the detection means. Then, the opening / closing information of the entrance door detected by the detection means can be stored in the storage means. Then, after that, before the person who returned home opens the entrance door and enters the house, at least two or more of the plurality of push button switches of the switch mechanism are set to the setting means. According to the order and the number of times each of the two or more push-button switches is pressed, it can be pressed with a finger to display the opening / closing information of the entrance door stored in the storage means on the display. Then, when the trespasser opens the entrance door during the absence, the trespasser can know that the trespasser has entered the home. Then, it is possible to prevent a person in the house from being harmed by a trespasser who has entered the house.

Further, when leaving the house at the next opportunity, the first erasing means can erase the opening / closing information of the entrance door previously stored in the storage means. Then, when the house is newly absent, for example, the opening / closing information of the entrance door as to whether or not the entrance door has been opened / closed can be newly stored in the storage means. Then, when you leave the house, etc., the person who came home will check whether the entrance door was opened and closed while you were away
The opening / closing information of the entrance door newly stored in the storage means can be displayed on the display device by the switch mechanism to know it.

Further, the opening / closing information of the entrance door displayed on the display can be erased by the second erasing means as soon as it becomes unnecessary. Then, it is possible to prevent the privacy information from being violated because the door opening / closing information stored in the storage means is inadvertently known to others.

In the apparatus for monitoring the opening and closing of an entrance door according to the present invention, it is preferable that the apparatus is provided with a changing means for changing the order and the number of times each of the two or more push button switches set in the setting means. I have.

In this apparatus for monitoring the opening / closing of the entrance door, when the order and the number of times of pressing the two or more push-button switches of the switch mechanism set in the setting means are known to others, the changing means is used. The order and the number of times each of the two or more pushbutton switches of the switch mechanism set in the setting means are pressed can be freely changed as desired. Then, according to the order and the number of times set by the setting means by another person,
It is possible to prevent two or more push-button switches from being pressed in sequence, and the door opening / closing information stored in the storage means from being displayed on the display unit unnecessarily. Then, it is possible to prevent leakage of the opening / closing information of the entrance door that is not desired to be known to others.

Further, in the apparatus for monitoring the opening and closing of a front door according to the present invention, information on opening and closing of the front door stored in the storage means;
And the opening and closing information of the entrance door displayed on the display, the information that the entrance door was opened, the time when the entrance door was opened or the information that the entrance door was closed, and the entrance door was closed. It is preferable that either one of these times or both of them be used.

In this apparatus for monitoring the opening and closing of a front door, the information that the front door is opened and the information that the front door is opened or the information that the front door is closed are stored in the storage means. Either or both of the times at which the entrance door is closed can be displayed on the display. Then, one or both of the information that the entrance door was opened during the absence and the time when the entrance door was opened or the information that the entrance door was closed and the time when the entrance door was closed were returned to the home. Can know exactly who was in the house.

In the apparatus for monitoring the opening and closing of an entrance door according to the present invention, the information displayed on the display unit may include, in addition to the opening and closing information of the entrance door, character information such as returning home or a picture for relaxing the mind. It is preferable that the information is information.

In this door opening / closing monitoring device, when a person who has returned home presses a push button switch with a finger to display the opening / closing information of the door on the display, the display is simultaneously displayed on the display. You can see the text information or the picture information that softens your heart. Then, the mind and body can be relaxed.

In the apparatus for monitoring the opening and closing of a front door according to the present invention, it is preferable that the display is a liquid crystal display.

In this apparatus for monitoring the opening and closing of a front door, a liquid crystal display with low power consumption is used as a display device.
Energy saving can be achieved.

In the apparatus for monitoring the opening and closing of an entrance door according to the present invention, it is preferable that a solar cell is used as a power supply source of the storage means or the display.

In this apparatus for monitoring the opening and closing of the entrance door, energy can be saved by using a solar cell as a power supply source of the storage means or the display.

In the apparatus for monitoring the opening and closing of an entrance door according to the present invention, the detecting means contacts a limit switch provided on a periphery of the entrance door with a knob of the limit switch when the entrance door is closed. It is a stopper, which consists of a stopper attached to the door frame, and when the entrance door is opened,
When the knob of the limit switch is separated from the stopper and the limit switch is turned on or off and the entrance door is closed, the knob of the limit switch hits the stopper and is pressed, and the limit switch is turned off. It is preferable that the structure be a state or an ON state.

In this door opening / closing monitoring device, when the door is opened, the knob of the limit switch is disengaged from the stopper against which the limit switch is pressed, and the limit switch is turned on or off. can do. vice versa,
When the entrance door is closed, the limit switch can be turned off or on by pressing the knob of the limit switch against the stopper. The limit switch can detect that the entrance door has been opened and closed.

Alternatively, in the apparatus for monitoring opening / closing of a front door of the present invention, the detecting means may include a light reflecting plate attached to a door frame, and a part of the front door facing the light reflecting plate when the front door is closed. An optical sensor mechanism comprising a light emitting element and a light receiving element attached to the light receiving element, wherein light emitted from the light emitting element when the entrance door is closed is reflected on the light reflecting plate and enters the light receiving element. It is preferable that the optical sensor mechanism has a structure.

In this apparatus for monitoring the opening and closing of a front door, the front door is opened, and a light reflecting plate attached to the door frame and a light emitting element and a light receiving element attached to the opposite door part are connected. When the positional relationship is deviated and the light emitted from the light emitting element is reflected on the light reflecting plate and cannot enter the light receiving element, it can be detected by the light receiving element. vice versa,
When the entrance door is closed, the light reflector attached to the door frame and the light emitting element and the light receiving element attached to the opposite entrance door part coincide with each other in the vertical direction, etc., and are emitted from the light emitting element. When the reflected light is reflected on the light reflecting plate and enters the light receiving element, it can be detected by the light receiving element. Then, the opening and closing of the entrance door can be detected by the optical sensor mechanism having the light receiving element.

In the apparatus for monitoring the opening and closing of an entrance door according to the present invention, recording means for recording a message of a person who has visited the entrance, and reproduction of the message recorded in the recording means so that the message can be heard. Reproduction means for turning on and off the recording means
A first sub-switch mechanism for controlling the F
It is preferable to adopt a structure provided with a second sub-switch mechanism for N and OFF control.

In this door opening / closing monitoring device, when a person who has visited an answering machine wants to send a message to a person in the house, the first sub-switch mechanism is used to send a message while the message is being sent.
When the recording means is turned on, the message can be recorded on the recording means. After that, when the person in the absence house returns, the person in the house turns on the reproducing means by the second sub-switch mechanism while listening to the message stored in the storing means. As a state, the person in the house can reproduce and hear the message of the person who has visited the answering machine recorded in the recording means.

[0027]

1 to 4 show a preferred embodiment of a door opening / closing monitoring apparatus according to the present invention. FIG. 1 is a block diagram showing a schematic structure thereof, and FIG. 2 is a schematic diagram of a switch mechanism thereof. FIG. 3 or FIG. 4 is a block diagram showing the structure, and FIG. 3 or FIG. 4 is an explanatory diagram showing the structure of the detecting means. Hereinafter, the opening / closing monitoring device for the entrance door will be described.

In the figure, reference numeral 10 denotes detecting means for detecting that the entrance door 20 has been opened and closed. The detection means 10
As shown in FIG. 3, a limit switch 30 provided on the periphery of the entrance door 20 and a stopper 34 for abutting the knob 32 of the limit switch when the entrance door 20 is closed. And a stopper 34 provided. As shown in FIG. 3, the limit switch 30 is attached to the back side peripheral edge of the entrance door 20 so that others cannot operate it unnecessarily when the entrance door 20 is closed. As shown in FIG. 3, the limit switch 30 is mounted on the surface of the entrance door 20 through a gap between the side edge of the entrance door 20 and the door frame 24 via a thin strip-shaped wiring cord 36. Is electrically connected to the storage means 40 incorporated in the apparatus main body 100 that has been connected. When the entrance door 20 is opened, the knob 32 of the limit switch is turned on.
Is configured to be separated from the stopper 34 to which the knob is pressed and the limit switch 30 is turned on or off. Conversely, when the entrance door 20 is closed,
When the limit switch knob 32 hits the stopper 34 and is pressed, the limit switch 30 is turned off or turned on.
It is configured to be in a state.

Alternatively, as shown in FIG. 4, the detecting means 10 is a light reflecting plate 2 such as a stainless steel plate attached to a door frame 24.
6, a light sensor mechanism 16 including a light emitting element 12 such as a light emitting diode and a light receiving element 14 attached to a part of the entrance door 20 facing the light reflection plate 26 in a state where the entrance door 20 is closed. The optical sensor mechanism 16 has a structure in which light emitted from the light emitting element 12 when the light emitting element 12 is closed is reflected on the light reflecting plate 26 and enters the light receiving element 14. When the entrance door 20 is opened, the positional relationship between the light reflecting plate 26 and the light emitting element 12 and the light receiving element 14 is deviated, and the light emitted from the light emitting element 12 is reflected on the light reflecting plate 26. The light cannot be reflected and made incident on the light receiving element 14, and the optical sensor mechanism 16 is in the ON state or the OF state.
It is configured to be in the F state. Conversely, the entrance door 20
When is closed, the positional relationship between the light reflecting plate 26 and the light emitting element 12 and the light receiving element 14 coincides with the vertical direction or the like, and the light emitted from the light emitting element 12 is reflected on the light reflecting plate 26. The optical sensor mechanism 16 is configured to be in an OFF state or an ON state.

Numeral 40 denotes the detecting means 1 shown in FIG. 3 or FIG.
This is storage means for storing the opening / closing information of the entrance door 20 detected by 0. The storage means 40 is composed of an electronic circuit including a dynamic semiconductor memory, a time display element, and the like. When the entrance door 20 is opened, the limit switch 30 is turned on or off, or when the light emitting element 12
When the detection means 10 detects the information that the entrance door 20 is opened because the light emitted from the light cannot enter the light receiving element 14, the information that the entrance door 20 is opened and the entrance door The configuration is such that the time when the device 20 is opened can be stored in the storage means 40. Also, the entrance door 20 is closed, and the limit switch 30 is turned off or turned on.
The state is changed, or the light emitted from the light emitting element 12 can enter the light receiving element 14, and the detecting means 1
When 0 detects that the entrance door 20 is closed, information that the entrance door 20 is closed and the time when the entrance door 20 is closed can be stored in the storage unit 40. I have.

Reference numeral 50 denotes a display for displaying the opening / closing information of the entrance door 20 stored in the storage means 40. The display 50 is composed of a liquid crystal display or the like, and the entrance door 2 stored in the storage means 40 on the liquid crystal display.
It is configured so that the open / close information of 0 can be displayed visually.

Reference numeral 60 denotes a switch mechanism for causing the display 50 to display the opening / closing information of the entrance door 20 stored in the storage means 40. As shown in FIG. 2, the switch mechanism 60 includes a plurality of (four in the figure) push button switches 62 pressed by a finger.
And at least two of the plurality of push button switches 62
A setting unit 64 in which the order and the number of times of pressing one or more of the push button switches 62 are set, and two or more of the two or more in accordance with the order and the number of times of pressing the two or more push button switches 62 set in the setting unit 64 And display means 66 for displaying on the display 50 the opening / closing information of the entrance door 20 stored in the storage means 40 when each of the push button switches 62 is pressed. The setting means 64 is formed of an electronic circuit having an erasable memory function. The display means 66 is formed of an electronic circuit having an ON / OFF control function for electrically connecting the storage means 40 and the display 50.

Reference numeral 70 denotes first erasing means for erasing the opening / closing information of the entrance door 20 stored in the storage means 40. The first erasing means 70 includes a reset circuit for returning the storage circuit of the storage means 40 in which the opening / closing information of the entrance door 20 is stored to a state before storage, and a switch operated by a finger for controlling ON / OFF of the reset circuit. Have been.

Reference numeral 80 denotes the entrance door 2 displayed on the display 50.
This is a second erasing means for erasing 0 opening / closing information. The second erasing means 80 includes a reset circuit for returning the opening / closing information of the entrance door 20 displayed on the display 50 to a state before the display, and a switch operated by a finger for controlling ON / OFF of the reset circuit. I have.

The monitoring apparatus for opening and closing the entrance door shown in FIGS. 1 to 4 is constructed as described above. By providing the push button switch 62 and the indicator 50 of the switch mechanism to the outside of the house in preparation for the outer wall of the house, the entrance door 20 was opened and closed by an intruder when the house was out of the house. In that case, it can be detected by the detecting means 10. And the detecting means 10
Opening / closing information of the entrance door 20 detected by the
Can be stored. Then, after that, before the person who returned home opens the entrance door 20 and enters the house, at least two or more of the plurality of push button switches 62 of the switch mechanism 60 are set. According to the order and the number of times each of the two or more push-button switches 62 set in the means 64 is pressed, it is possible to cause the display 50 to display the opening / closing information of the entrance door 20 stored in the storage means 40 by pressing with a finger. . Then, when the burglar opens the entrance door 20 during the absence, and the burglar enters the house, the user can know this by looking at the opening / closing information of the entrance 20 displayed on the display 50. be able to.
And, it is possible to prevent the housekeeper from being harmed by the trespasser.

When leaving the house at the next opportunity, the opening / closing information of the entrance door 20 previously stored in the storage means 40 can be deleted by the first deletion means 70. The entrance door 20 determines whether the entrance door 20 has been opened and closed during the absence.
Can be newly stored in the storage means 40. Then, the person who came home can display the opening / closing information of the entrance door 20 stored in the storage means 40 during the absence and display it on the display device 50 by the switch mechanism 60 to know.

The entrance door 20 displayed on the display 50
Can be erased by the second erasing means 80 as soon as it becomes unnecessary. Then, it is possible to prevent the privacy information from being violated because the opening / closing information of the entrance door 20 stored in the storage means 40 is inadvertently known to others.

In the apparatus for monitoring the opening and closing of the entrance door, it is preferable to provide a change means 68 for changing the order and the number of times of pressing the two or more push button switches 62 set in the setting means 64. The operation unit of the changing unit 68 may be provided on the back surface of the apparatus main body 100 or the like so as not to be easily operated by others. When the order and the number of times of pressing the two or more push-button switches 62 of the switch mechanism 60 set in the setting means 64 are known to others, the changing means 68
Of the switch mechanism 60 set in the setting means 64 by the
It is preferable that the order and number of times of pressing one or more of the push button switches 62 can be freely changed as desired. Then, two or more of the push button switches 62 are sequentially pressed by the other person in the order and number of times set in the setting means 64, and the opening / closing information of the entrance door 20 stored in the storage means 40 is indiscriminately. It is preferable that the display on the display 50 can be prevented. Then, it is preferable to prevent leakage of the opening / closing information of the entrance door 20 that the user does not want others to know. Change means 68
Is preferably composed of an electronic circuit or the like.

The entrance door 2 stored in the storage means 40
0 opening and closing information and the entrance door 20 displayed on the display 50
May be a number or the like indicating the number of times the entrance door 20 has been opened and closed. Also in that case, the entrance door 2
It is possible for the person who came home to know that 0 has been opened and closed before opening the entrance door 20.

A number, a symbol, or the like may be added to each of the plurality of push button switches 62. Then, two or more of the plurality of push button switches 62 are set in the house according to the order and the number of times of pressing the two or more push button switches 62 set in the setting means 64. Should be able to be pressed without error.

The information displayed on the display unit 50 may be such that, in addition to the opening / closing information of the entrance door 20, character information such as returning home or picture information for relaxing the mind can be displayed. The character information or picture information at that time may be stored in a storage element or the like provided in the storage means 40. And
It is preferable that the switch mechanism 60 be able to simultaneously display character information such as returning to the display 50 or picture information for relaxing the mind when the display information of the opening and closing of the entrance door 20 is displayed on the display 50. In this case, the person who came home
When the user presses the push button switch 62 to display the opening / closing information of the entrance door 20 on the display 50, the display 5
It is possible to see character information such as "Go home" displayed on 0 or picture information for relaxing the mind. Then, the mind and body can be relaxed.

The display 50 can be a display tube or the like. However, the display 50
In addition, when the above-described liquid crystal display is used, energy saving can be achieved.

As a power supply source for operating the storage means 40 or the display 50, a solar cell may be used. And it is good to save energy.

The detecting means 10 is a pressure sensor sandwiched between the door stop and the periphery of the entrance door 20 in contact with the door stop, and is provided on one of the door stop side and the peripheral side of the entrance door 20. It may be a pressure sensor or the like. Alternatively, it may be a switch mechanism incorporated in the lock of the entrance door 20, and a switch mechanism that performs ON and OFF operations when the lock is opened and closed. Alternatively, a detection mechanism using an electromagnetic wave may be used.

Further, as shown in FIG. 5, the door opening / closing monitoring device includes a recording unit 110 for recording a message of a person who has visited the entrance, and listening to the message recorded on the recording unit. A first sub-switch mechanism 130 for controlling ON / OFF of the recording means 110, and a second sub-switch mechanism 130 for controlling ON / OFF of the reproducing means 120.
A sub-switch mechanism 140 may be provided. Then, when a person who has visited the answering machine wants to transmit a message to a person in the house, the first sub-switch mechanism 130 turns on the recording means 110 while the message is being written, and records the message. It is preferable that the data can be recorded on the H.110. After that, when the person in the absence home returns, while the person in the house listens to the message stored in the recording means 110 by the second sub-switch mechanism 140, the reproducing means 120 is turned on. As a state, the person in the house is
It is good to be able to reproduce and hear the message of the person who came to the answering machine recorded at 0. Recording means 110
May be formed from a microphone 112, an electronic circuit having a recording function, or the like. The reproducing means 120 is preferably formed by an electronic amplification circuit, a speaker 122 and the like. The first sub-switch mechanism 130 and the second sub-switch mechanism 140 may be formed by a push button switch or the like.

The storage means 40, the switch mechanism 60, the display 50, the first erasing means 70, and the second
The erasing means 80 or the recording means 110, the reproducing means 120, and the first sub-switch mechanism 13 shown in FIG.
As shown in FIG. 3 or FIG. 4, the zero and second sub-switch mechanism 140 may be integrated into the box-shaped apparatus main body 100. Then, it is preferable that the apparatus main body 100 can be easily attached to the surface of the entrance door 20 with a double-sided adhesive tape or the like provided on the back surface of the apparatus main body.

[0047]

As described above, according to the apparatus for monitoring the opening and closing of the entrance door of the present invention, it is possible to detect that an illegal intruder has opened the entrance door and entered the house when he or she is away from home. The person who came home can display the opening / closing information of the entrance door stored in the storage means on the display device, and can easily and surely know the information. Then, it is possible to prevent the person who has returned home from opening the entrance door and entering the house without knowing that an unauthorized intruder has entered the absence house. And, it is possible to prevent the person in the house from suffering irreparable harm from a trespasser who has entered the abandoned house.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a schematic structure of a door opening / closing monitoring device according to the present invention.

FIG. 2 is a block diagram showing a schematic structure of a switch mechanism of the entrance door opening / closing monitoring device of the present invention.

FIG. 3 is a schematic structural explanatory view of a detecting means of the entrance door opening / closing monitoring device of the present invention.

FIG. 4 is a schematic structural explanatory view of a detecting means of the entrance door opening / closing monitoring device of the present invention.

FIG. 5 is a block diagram of a recording unit, a reproducing unit, a first sub-switch mechanism, and a second sub-switch mechanism of the entrance door opening / closing monitoring device of the present invention.

[Explanation of symbols]

 Reference Signs List 10 detecting means 12 light emitting element 14 light receiving element 16 optical sensor mechanism 20 entrance door 24 door frame 26 light reflecting plate 30 limit switch 32 limit switch knob 34 stopper 40 storage means 50 display 60 switch mechanism 62 push button switch 64 setting means 66 Display means 68 changing means 70 first erasing means 80 second erasing means 100 device body 110 recording means 120 reproducing means 130 first sub-switch mechanism 140 second sub-switch mechanism

Claims (9)

[Claims] 1. A detecting means for detecting that an entrance door is opened and closed, a storage means for storing information on opening and closing of the entrance door detected by the detecting means, and an opening and closing information of the entrance door stored in the storage means , A switch mechanism for displaying the opening / closing information of the entrance door on the display, first erasing means for erasing the opening / closing information of the entrance door stored in the storage means, and a display on the display. And a second erasing means for erasing the opened / closed information of the entrance door, wherein the switch mechanism comprises: a plurality of push button switches pressed by a finger; and at least two or more of the plurality of push button switches. According to a setting means in which the order and the number of times of pressing are set, and the order and the number of times of pressing each of the two or more push button switches set in the setting means,
Display means for displaying, on the display, the opening / closing information of the entrance door stored in the storage means when the two or more push button switches are pressed. Monitoring device. 2. The apparatus according to claim 1, further comprising changing means for changing the order and the number of pressing of each of the two or more push-button switches set in said setting means. 3. The opening / closing information of the entrance door stored in the storage means and the opening / closing information of the entrance door displayed on the display unit are information indicating that the entrance door has been opened and that the entrance door has been opened. 3. The apparatus for monitoring the opening and closing of an entrance door according to claim 1 or 2, wherein the information is one or both of a time, information that the entrance door is closed, and a time when the entrance door is closed. 4. The information according to claim 1, 2 or 3, wherein the information displayed on the display is character information such as returning home or picture information for relaxing the mind, in addition to the opening / closing information of the entrance door. Door opening / closing information device. 5. The apparatus according to claim 1, wherein the display is a liquid crystal display. 6. The monitoring apparatus according to claim 1, wherein a solar cell is used as a power supply source of the storage means or the display. 7. A stopper provided on a door frame, wherein said detecting means is a limit switch provided on a periphery of an entrance door, and a stopper for bringing a knob of said limit switch into contact when said entrance door is closed. When the entrance door is opened, the knob of the limit switch is separated from the stopper, the limit switch is turned on or off, and when the entrance door is closed, the knob of the limit switch is turned off. The opening / closing monitoring apparatus for a front door according to claim 1, 2, 3, 4, 5, or 6, wherein the limit switch is turned on or off by being pressed against the stopper. 8. The detecting means comprises a light reflecting plate attached to a door frame, and a light emitting element and a light receiving element attached to a part of the entrance door facing the light reflecting plate when the entrance door is closed. 3. An optical sensor mechanism, wherein the light emitted from the light emitting element when the entrance door is closed is reflected on the light reflecting plate and enters the light receiving element. 7. The apparatus for monitoring opening / closing of a front door according to claim 3, 4, 5, or 6. 9. A recording means for recording a message of a person who has visited the entrance, a reproducing means for reproducing the message recorded on the recording means so that the message can be heard, and
9. The apparatus according to claim 1, further comprising: a first sub-switch mechanism for controlling N and OFF, and a second sub-switch mechanism for controlling ON and OFF of the reproducing unit. Door opening / closing monitoring device.