JP2001040958A - Shutter device for peep window - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a peep window which allows checking outdoor conditions without being known by visitors. SOLUTION: This shutter device is attracted and mounted to a door 1 by means of a magnet 5 with the hinge 4-3 of a shutter plate 4-1 at its top so as to cover the indoor projecting part of an existing peep window mounted in a front door or the like. Normally, the shutter plate 4-1 falls by its own weight and the peep window 2 is concealed within the shutter device. When someone wants to know outdoor conditions, he or she approaches the peep window 2, opens the shutter plate 4-1 by raising a handle 4-2, and looks through the peep window 2. Even if the indoor side is bright, his or her face is close to the peep window 2 just before the shutter plate 4-1 is opened, so that light from behind is blocked by the head and does not leak out. Consequently, the peep window 2 shows no appreciable changes when seen from the outside and the opening or closing of the shutter plate 4-1 is unnoticeable. When the handle 4-2 is released, the shutter plate 4-1 closes by its own weight and the shutter is not left open.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a viewing window shutter device which can be attached to a viewing window provided on a door or the like.

[0002]

2. Description of the Related Art Conventionally, doors are provided with security and security.
A viewing window is provided for checking visitors from inside. FIG. 6 is a diagram showing a configuration of a peephole of a door, where 1 is a door and 2 is a peephole. When a visitor pushes a chime or the like, the outside view can be seen at a wide angle from the inside of the room through the observation window 2, and the visitor's face can be seen without any knowledge of the interior side. The wind and surroundings can be checked, and the door is not opened unless necessary. However, when the room is brighter than the outdoors, especially when the room is bright at night, the light from the room when looking through the window hole,
If you are interrupted by your head and know that there is a person in the room, and you do not want to meet your face with an acquaintance, you will feel uncomfortable even if you are silent with the other party, visit sales, solicitation etc. When a person who does not want to respond knows that he / she is away, he / she may be discouraged, harassed, or mischieved, and may feel very unpleasant or annoyed.

[0003] In addition, perverts who aim to live alone by women who have recently become a social problem, when they are detected by their absence and their opponents, continue to be watched or ambushed for a long time, which makes them creepy and confidential. Is also not preferred. In such a case, if the visitor does not realize that he is away and sees the visitor and the outside, it is likely that those who do not want to meet will pretend to be away and the other party will escape quickly and It is the best way to solve a problem without having to worry about it. For this reason, conventionally, there is a device that attaches the lens part of a TV camera to the peephole of the door, projects the outside scenery on the TV screen, and checks the outside state, but it is a relatively large device, and it is installed It was also hard and very expensive.

[0004]

DISCLOSURE OF THE INVENTION The present invention has a simple structure, is very inexpensive, can be easily attached to an existing viewing window, and allows a visitor to see the outside without knowing it. An object of the present invention is to provide a window shutter device.

[0005]

According to the first aspect of the present invention, an inner diameter of the observation window is larger than a diameter of the cylindrical protrusion on the indoor side,
This is a viewing window shutter device in which an openable and closable shutter body is attached to one end of a cylindrical body having a length substantially equal to the length of the projection, and a door attaching means is provided at the other end.

According to a second aspect of the present invention, the shutter body according to the first aspect of the present invention is a mechanical shutter for opening and closing an optical path.

According to a third aspect of the present invention, in the first aspect of the present invention, the shutter body comprises two polarizing plates, and the relative angles of the polarization planes of the two polarizing plates are changed.
It transmits and blocks light.

According to a fourth aspect of the present invention, the shutter body in the first aspect of the present invention is a liquid crystal optical shutter.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows an embodiment of a viewing window shutter device according to the present invention, in which (A) is a front view,
(B) is a side view. In the figure, reference numeral 3 denotes an opaque cylindrical body having an inside diameter sufficient to surround a part 2-1 of the viewing window 2 protruding toward the room side, and a length substantially equal to the length of the protruding part 2-1. In this embodiment, a disk-shaped opaque shutter plate 4-1 having a diameter covering the opening of the cylindrical body 3 and a knob 4-2 attached to the shutter plate are provided. It is attached to the upper part by a hinge 4-3 so that it can be opened and closed freely. Reference numeral 5 denotes an annular permanent magnet attached to the other end of the cylindrical body 3, which is attached to a common iron door or the like by magnetic attraction.

First, the shutter device constructed as above is permanently mounted so that the hinge 4-3 of the shutter plate 4-1 faces upward so as to cover the protruding portion 2-1 of the existing viewing window 2 on the indoor side. The door 5 is attracted by the magnet 5. Usually, the shutter plate 4-1 descends by its own weight.

When a visitor visits or wants to know the outside, the person inside is approaching the viewing window, and
2 is lifted to open the shutter plate 4-1 upward (indicated by a broken line in the drawing), and the peeping is confirmed through the peeping window 2. At this time, even if the interior of the room is bright, just before the shutter body 4 is opened, the face is close to the viewing window, and the light from behind is blocked by the head, and the light leaks out. There is no. Therefore, since no change can be found in the viewing window from outside, it is not detected that there is a person in the room or even that the person is being peeped. The visitor gives up as soon as the resident is away and escapes promptly without any trouble. When the knob 4-2 is released, the shutter plate 4-1 is closed by its own weight, and the shutter body 4 is not inadvertently left open.

FIGS. 2A and 2B show another embodiment of the viewing window shutter device according to the present invention, wherein FIG. 2A is a front view and FIG. 2B is a side view. In this embodiment, the shutter body is rotated and moved, and the mounting method and the opening and closing direction of the shutter plate are different from those of the embodiment shown in FIG. In the figure, reference numeral 3 denotes a cylindrical body, 4 denotes a shutter body, which comprises a disc-shaped opaque shutter plate 4-1 and a knob 4-2 attached to the shutter plate. It is mounted swingably at 4-4. 5 is an annular permanent magnet.

Also in this embodiment, the method of attaching to the door and the method of use are as follows except that when a person comes, the shutter plate 4-1 is opened by rotating the shutter plate 4-1 about the pin 4-4. This is the same as the above-described embodiment (in the drawing, the open state is indicated by a broken line). Also in this embodiment, since the upper part of the disc-shaped shutter plate 4-1 is swingably attached by the pins 4-4, the shutter plate 4-1 normally falls down by its own weight, so that forgetting to close can be prevented. .

FIGS. 3A and 3B show another embodiment of the viewing window shutter device according to the present invention, wherein FIG. 3A is a front view and FIG. 3B is a side view. In this embodiment, the shutter plate is moved in parallel to open and close. In the figure, 3 is a cylinder, 4
Denotes a shutter body, which is a disk-shaped opaque shutter plate 4-1.
And a knob 4-2 attached to the shutter plate and an oval flat thin slide case 4-5 which slidably accommodates the shutter plate 4-1. The knob is fixed to one end of the cylindrical body 3. I have. 5 is an annular permanent magnet. The slide case 4-5 has an opening having a size enough for the cylindrical body 3 to appear on both sides of the case, and an elongated hole formed on the upper surface of the case to engage with the knob 4-2 in the longitudinal direction. The shutter plate 4-1 has a knob 4
-2 and the slot is slid as a guide. The cylindrical body 3 and the slide case 4-5 are bonded so that the opening of the cylindrical body 3 and the opening provided below the slide case are aligned.

In the shutter device of this embodiment, the cylindrical body 3 is placed over the indoor projection 2-1 of the door such that the viewing window 2 is located below the slide case 4-5, and the door 1 is moved by the permanent magnet 5. Attach and attach. If necessary, the user slides the shutter plate 4-1 upward with the knob 4-2, opens the shutter body, and looks out from the viewing window. Also in this case, normally, the shutter plate 4-1 is brought down by its own weight, and it is possible to prevent forgetting to close.

The above embodiment is an example of a mechanical shutter body that opens and closes a shutter plate. The following is an example of an optical shutter using an optical element. FIG. 4 shows still another embodiment of the viewing window shutter device according to the present invention, and FIG.
Is a front view, and (B) is a side view. In the present embodiment, as a shutter body, two polarizing plates, which are optical elements, are superimposed and mounted so as to be relatively rotatable. Usually, the directions of the polarization planes of the two polarizing plates are changed so that the light Is shielded, and when the peeping hole is peeped, the direction of the polarization plane is made to match and the light is transmitted, so that the outside state can be observed. In the figure, reference numeral 3 denotes a cylindrical body, 4 denotes a shutter body, and a polarizing plate 4-6 fixed to an end of the cylindrical body 3 so as to cover the opening, and a polarizing plate 4-6 which is rotatably mounted on the polarizing plate 4-6. Consists of seven. 4-2, a knob attached to the outer periphery of the rotatable polarizing plate 4-7, 4-8 rotatably supports the polarizing plate 4-7, and regulates the rotation angle of the knob 4-2 to 90 °. It is a guide. 5 is an annular permanent magnet.

The two polarizing plates 4-6, 4- of the shutter body 4
7, when the knob 4-2 is at the bottom, the polarization planes are 9
When the knob 4-2 is in a direction different from 0 °, the light is blocked, and the knob 4-2 is in the horizontal direction (the position indicated by the broken line in the figure),
The directions of the polarization planes of the two polarizing plates 4-6 and 4-7 match,
It is mounted so that light can pass through it. Normally, the knob 4-2 is lowered, and the shutter body 4 is
If the knob 4-2 is pushed up to the horizontal direction, which is the stop position of the guide 4-8, when looking into the outside, the shutter body 4 is in a transparent state. Can be seen. Also in this case, the knob 4-2
Is made of a heavy member, the knob 4-2 is rotated downward by its own weight, and the light is cut off, so that it is easy to forget to close it.

Next, an example in which an electro-optical element is used as a shutter body will be described. 5A and 5B show still another embodiment of the viewing window shutter device according to the present invention, wherein FIG.
(B) is a side view. In this embodiment, a liquid crystal element which is opaque when no voltage is applied and becomes transparent when a voltage is applied is used as a shutter body. In the drawing, reference numeral 3 denotes a cylindrical body, and 4 denotes a shutter body, which is composed of a liquid crystal element 4-9 having transparent electrodes on both sides, and is attached to an end of the cylindrical body 3. 5 is an annular magnet for attachment. 6
Is a case for accommodating a power supply for driving the liquid crystal and an electronic circuit (neither is shown). The case is formed integrally with the shutter body 4 and is fixed to the cylindrical body 3. 6-1 is a push button switch for turning on a power supply attached to the side surface of the case section 6 and applying a voltage to the transparent electrode of the liquid crystal element 4-9.

Normally, no voltage is applied to the liquid crystal element 4-9, so that the liquid crystal element 4-9 is opaque. However, when looking outside, the user turns on the power supply (not shown) by approaching and pressing the push button switch 6-1. The electronic circuit is activated, a voltage is applied to the liquid crystal element 4-9, the liquid crystal becomes transparent, and the outside can be seen through the viewing window. After confirming, release the push-button switch 6-1 to release the switch, the liquid crystal becomes opaque, and do not forget to turn off the switch. In addition,
The voltage is applied to the liquid crystal by turning on the manual switch. For example, if a proximity switch using a pyroelectric sensor is employed, when the face is brought close to the viewing window, the switch is activated and the shutter member is activated. ON / OFF of the liquid crystal can be automated.

With the shutter device as described above, when a visitor announces a visit with a chime or the like, the resident looks into the outside through an observation window to confirm the visitor. At that time, first, bring your face close to the viewing window, so that light from behind is blocked, and then you open the shutter,
Even if the shutter is opened, the light in the room does not leak outside. Therefore,
You can't get to know the interior from outside. The visitor mistakenly thinks that the resident is away, and will quickly evacuate, avoiding bothersome and unpleasant thoughts.

It is preferable that the inside of the cylindrical body and the inner side surface of the shutter body are coated with a black matte paint so as to minimize reflection of light and prevent light from the indoor side from being emitted to the outside. In addition, although a permanent magnet is used as a means for attaching to the door, when the door is made of wood or the like other than a magnetic material, the door may be directly attached with an adhesive or an annular adhesive in which the adhesive layer is protected with release paper. In such a case, the release paper may be peeled off and attached to a predetermined location.

Further, the inner diameter of the cylindrical body is made substantially the same as the outer diameter of the cylindrical portion protruding toward the indoor side of the viewing window to be attached.
It may be fitted and attached to the indoor side cylindrical portion of the viewing window. The main purpose of the present invention is to not be aware that the user is inside the camera.
It is also necessary to devise material selection and structure so that the operating sound is generated as little as possible and transmitted.
The material is not particularly limited, but plastic and the like are also inexpensive and easy to mold into a product having a simple structure of the present invention,
It is suitable for mass production and has excellent soundproofing and soundproofing effects in terms of material.

Further, according to the present invention, the shutter body of the above-described embodiment may be attached to the viewing window inside the door. Then, a popular character may be formed and formed. Although not shown, it is needless to say that the peep window of the door may be configured to have the above-described shutter device attached thereto and may be replaced with an existing peep window, and the configuration for that purpose will also be described in this specification. No, but only a matter of design matter that can be made arbitrarily by those skilled in the art.

[0024]

According to the present invention, it is possible to provide a shutter for a viewing window which can be easily attached to an existing door with a simple structure. You do n’t have to worry about causing unnecessary trouble,
A security effect can also be expected.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of the present invention.

FIG. 2 is a diagram showing another embodiment of the present invention.

FIG. 3 is a diagram showing another embodiment of the present invention.

FIG. 4 is a diagram showing still another embodiment of the present invention.

FIG. 5 is a view showing still another embodiment of the present invention.

FIG. 6 is a perspective view of the door as viewed from the indoor side.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Door, 2 ... Viewing window, 3 ... Cylindrical body, 4 ... Shutter body,
4-1 shutter plate, 4-2 knob, 4-3 hinge,
4-4 pin, 4-5 slide case, 4-6, 4-
7 ... polarizer, 4-8 ... guide, 4-9 ... liquid crystal element, 5 ...
Annular magnet, 6 ... case part, 6-1 ... push button switch.

Claims (4)

[Claims] 1. An opening / closing shutter body is attached to one end of a cylindrical body having an inside diameter larger than the diameter of a cylindrical projection on the indoor side of a viewing window and having a length approximately equal to the length of the projection, and a door is provided at the other end. A viewing window shutter device provided with an attaching means. 2. The viewing window shutter device according to claim 1, wherein the shutter body is a mechanical shutter for opening and closing an optical path. 3. The shutter body comprises two polarizing plates, and by changing the relative angles of the polarization planes of the two polarizing plates,
2. The shutter device for a viewing window according to claim 1, wherein light is transmitted and blocked. 4. A shutter device for a viewing window according to claim 1, wherein said shutter body is a liquid crystal optical shutter.