JP3059083U - Alarm device - Google Patents

Abstract

(57) [Problem] To provide an inexpensive alarm device having a simple structure capable of detecting destruction of an object to be destroyed such as glass and issuing an alarm. SOLUTION: A conductive wire which is arranged in the vicinity of an object to be destroyed and is disconnected when the object to be destroyed, a detecting means for detecting the disconnection in the conductive wire, and a signal in response to the detection of the disconnection by the detecting means. And an alarming means for issuing an alarm in response to a signal generated from the transmitting means.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to an alarm device, and more particularly, to an alarm device that issues an alarm when an object to be destroyed is destroyed.

[0002]

[Prior art]

 For example, when leaving home and sleeping, etc., people who destroy doors, sashes, etc. for the purpose of crimes, etc. to prevent them from entering and prevent family members from entering. A variety of alarms have been developed to alert people and neighbors. However, these alarms were rather expensive and bulky, making it difficult to purchase them in the home. For this reason, it has been desired to develop an inexpensive alarm device having a simpler structure.

[0003]

[Problems to be solved by the invention]

 The present invention has been made to solve such a conventional problem, and an object thereof is to provide an inexpensive alarm device having a simple structure capable of detecting the destruction of an object to be destroyed such as glass and issuing an alarm. Aim.

[0004]

[Means for Solving the Problems]

 According to one aspect of the present invention, there is provided a conductive wire that is disposed near an object to be destroyed and is disconnected due to the breakage of the object to be destroyed, a detecting means for detecting a disconnection in the conductive wire, A transmitting means for generating a signal in response to the detection of the disconnection by the detecting means, and an alarm means for issuing an alarm in response to the signal generated from the transmitting means.

According to one embodiment of the present invention, an adhesive sheet is further provided, and the conductive wire is previously wired on the adhesive sheet, so that the adhesive sheet is bonded to the object to be destroyed. A conductive wire is attached to the object to be destroyed.

According to another embodiment of the present invention, the conductive wires are wired in a loop on the adhesive sheet.

[0007] According to yet another embodiment of the present invention, the apparatus according to any one of claims 1 to 3, wherein the alarm device has both an outlet power supply and an internal battery.

According to another embodiment of the present invention, the signal from the transmitting means is a radio signal, and the connection between the transmitting means and the alarm means is a wireless connection.

[0009] According to yet another embodiment of the present invention, the transmitting means has an extension in response to the size of the object to be destroyed.

[0010]

[Embodiment of the invention]

 1 and 2, a preferred embodiment of the present invention will be described. Here, FIG. 1 is a schematic front view of an alarm device according to the present invention installed on an object to be destroyed, and FIG. 2 is a partially enlarged sectional view of FIG. In the present embodiment, as the object to be destroyed, a sheet glass fitted to a window frame is exemplified, but, of course, the object is not limited to this.

The alarm device 1 according to the present invention is mainly disposed near an object to be destroyed such as, for example, a glass sheet 6, and the conductive line 2 that is disconnected due to the destruction thereof, and the disconnection in the conductive line 2. A transmitter 3 which detects a signal and generates a signal, and an alarm 4 which issues an alarm in response to the signal generated from the transmitter 3. The disconnection is detected by a detecting device (not shown) provided separately from the transmitter 3. When the detecting device detects the disconnection, the transmitter 3 outputs a signal in response to the detection. It may occur.

The conductive wire 2 is provided for detecting breakage of the glass sheet 6. The conductive wire 2 is bonded to the surface of the sheet glass 6 using, for example, a (one-sided) adhesive sheet 5. This bonding must be performed from the inside of the room so that an intruder cannot easily remove the adhesive sheet 5 and the conductive wire 2. In order to facilitate the bonding operation, the conductive wires 2 are previously wired inside the bonding surface of the bonding sheet 5. The conductive wires 2 are preferably wired in a loop on the adhesive sheet 5 so that the conductive wires 2 spread over at least substantially the entire area of the glass sheet 6 to which the adhesive sheet 5 is bonded. Further, it is preferable that the conductive wire 2 and the adhesive sheet 5 are made of a transparent material as much as possible so as to make it difficult for an intruder to find out. As the transparent conductive wire, for example, there is one obtained by attaching a conductive material to transparent glass. Further, the conductive wires 2 and the adhesive sheet 5 need to be made of a material that can be easily broken (disconnected) with the breakage of the glass sheet 6.

Both ends of the conductive wire 2 are connected to a transmitter 3 attached to an adhesive sheet 5. The transmitter 3 supplies a current to the conductive line 2 and detects a disconnection in the conductive line 2, that is, a state in which the current cannot be supplied, and generates a signal to the alarm device 4. The power source of the transmitter 3 may be a built-in battery or an outlet power source, or may be provided with both of them. However, it is often difficult to obtain an outlet power supply when installing it on a window or the like, so it is preferable to use a built-in battery whose battery can be replaced. The transmitter 3 is configured to perform a circuit test and a test of a built-in battery so as to more reliably maintain the operating state.

It is desirable that the transmitter 3 be attached to the flat glass by a method that makes it difficult for an intruder to discriminate and does not cause a problem in opening and closing the window. An example of the mounting is shown in more detail in FIG. This figure is a partially enlarged cross-sectional view in the direction perpendicular to the paper along the line AA. As shown in this figure, the transmitter 3 is preferably mounted on one side of the upper part of the glass plate 6 within a thickness range of one side (the indoor side) of the window frame 7. Here, by disposing the transmitter 3 so as not to protrude from one thickness of the window frame 7, the opening and closing of the window is hindered (including the case where two glass sheets are overlapped as shown in the figure). It does not occur, and by arranging it on the upper part of the plate glass 6, it is made difficult for an intruder to see. Note that the transmitter 3 is usually only long enough to occupy only a part of one side of the sheet glass. However, if only the transmitter 3 is mounted on the window, the intruder will be unable to detect the presence of the alarm device. As shown in the front view, it is extended in response to the length of the glass sheet so as to occupy the entire side of the glass sheet because of the great risk of noticing that. That is, in the front view, the portion actually occupied by the transmitter 3 is up to the portion shown by the dotted line in the drawing, and the other portions are merely extension portions 3 'having no particularly important structure. With such a structure, even if the intruder can integrally determine the transmitter 3 and the extension 3 ', it is impossible to recognize the presence of the transmitter.

The transmitter 3 is connected to a separate alarm 4 by wireless connection. The alarm 4 receives the signal generated by the transmitter 3. When the transmitter 3 and the alarm 4 are wirelessly connected, the signal from the transmitter 3 is naturally a radio signal. By using the radio signal, the alarm 4 can be installed at a location relatively far from the transmitter 3 and the adhesive sheet 5. The power source of this alarm device 4 may be a built-in battery, an outlet power source near the installation position, or both as in the case of the transmitter device 3. Providing both power supplies makes it possible to obtain power from the built-in battery in the event of an emergency such as a power outage, and to maintain the operation of the alarm with high reliability. The alarm 4 has a built-in alarm bell or the like, and can respond to a signal from the transmitter 3 to generate an alarm by sounding the alarm to notify the family or the neighborhood of the intruder.

[0016]

[Effect of the invention]

 According to the present invention, an inexpensive alarm device having a simple structure can be provided.

[Brief description of the drawings]

FIG. 1 is a diagram showing an alarm device according to an embodiment of the present invention.

FIG. 2 is a partially enlarged cross-sectional view taken along line AA of FIG. 1 in a direction perpendicular to the paper surface.

[Brief description of reference numerals]

 REFERENCE SIGNS LIST 1 alarm device 2 conductive wire 3 transmitter 3 ′ extension 4 alarm 5 adhesive sheet 6 sheet glass 7 window frame

Claims (6)

[Utility model registration claims] A conductive line that is disposed near an object to be destroyed and is disconnected in accordance with the destruction of the object to be destroyed; detecting means for detecting a disconnection in the conductive line; and detecting the disconnection by the detecting means. An alarm device comprising: transmitting means for generating a signal in response; and alarm means for generating an alarm in response to a signal generated from the transmitting means. 2. The method according to claim 1, further comprising an adhesive sheet, wherein the conductive wire is previously wired on the adhesive sheet, and the conductive wire is attached to the object to be destroyed through bonding of the adhesive sheet to the object to be destroyed. Item 1. The apparatus according to Item 1. 3. The apparatus according to claim 2, wherein the conductive lines are wired in a loop on the adhesive sheet. 4. The device according to claim 1, wherein the alarm device has both an outlet power supply and a built-in battery. 5. The apparatus according to claim 1, wherein the signal from the transmitting unit is a radio signal, and a connection between the transmitting unit and the alarm unit is a wireless connection. 6. Apparatus according to claim 1, wherein the transmitting means has an extension in response to the size of the object to be destroyed.