JP2001143166A - Device for preventing burglar and system for preventing burglar using same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a burglar preventing device and a burglar preventing system using the device for a store whose entrance and exit are not specified. SOLUTION: Plate-shaped first signal transmitters 20 are installed in almost the whole area of the floor of a store, and they are covered with a carpet C. Also, a burglar preventing device 10 mounted on an object T being merchandise issues warning by a built-in alarm when a first burglar preventing signal transmitted by the first signal transmitter 20 is not received.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a self-reporting anti-theft device that issues a notification based on the reception state of a predetermined signal, and an anti-theft system using the anti-theft device attached to an object to be stolen. About.

[0002]

2. Description of the Related Art In order to prevent theft of a product displayed at a store, a self-report type antitheft device which issues a notification when a predetermined antitheft signal is received is attached to the product, and the outlet of the store is installed. There is an anti-theft system provided with a transmitter for transmitting the anti-theft signal nearby. In such an anti-theft system, when a clerk tries to take out the product without removing the anti-theft device through the exit, the anti-theft signal transmitted by the transmitter is received by the anti-theft device, An alarm provided in the anti-theft device gives an alarm.

FIGS. 10 and 11 are explanatory views showing the use state of a conventional anti-theft device. In FIG.
Is a wire having a flexible conductor covered with an insulating material and having a conductive pin-shaped member insertion portion at both ends. An annular groove is provided around the tip of the insertion portion. Two insertion holes into which the insertion portions of the wires 94 are inserted are formed on one end surface of the rectangular box-shaped device main body. Inside the insertion holes, both insertion portions are engaged with the above-described grooves. A lock mechanism for locking is provided. A button or the like provided on the buttonhole of the outerwear and shirt or the collar of the clothing (buttonhole of the outerwear in FIG. 10) is inserted through the mounting portion of the object T, and the insertion portion of the wire 94 is inserted into the insertion hole of the apparatus body. The anti-theft device 91 is attached to the object T by inserting the groove and the lock mechanism until they are engaged.

In FIG. 11, reference numeral 95 denotes a pin having a needle-shaped leg suspended from the center of the lower surface of a disk-shaped head. An annular groove is provided in the vicinity of the tip of the leg. An insertion hole into which the leg of the pin 95 is inserted is formed near one end of the surface of the rectangular box-shaped apparatus main body, and a lock for engaging the groove and locking the leg is provided inside the insertion hole. A mechanism is provided. Then, the leg of the pin 95 is inserted through the stitch of the knit product, the button hole of the shirt, etc. (the stitch of the knit product in FIG. 11), and the mounting portion of the object T,
The anti-theft device 92 is attached to the object T by inserting the leg of the pin 95 into the insertion hole of the device main body until the groove and the lock mechanism engage.

[0005] The apparatus main body shown in FIGS. 10 and 11 incorporates an antenna for receiving a signal transmitted from a transmitter, a buzzer, a battery, and the like. The transmitter transmits an anti-theft signal of a strength that can be received by the anti-theft devices 91 and 92 to a predetermined area. For example, by disposing a gate type transmitter at the entrance and exit, The object T to which the anti-theft devices 91 and 92 are attached approaches the transmitter,
When the device body receives the anti-theft signal transmitted from the transmitter, the device body operates a buzzer and emits an alarm sound,
The object T is prevented from being stolen.

The wire 94 and the pin 95 function as normally closed contacts, and when the wire 94 or the pin 95 is pulled out from the main body of the device in order to remove the anti-theft devices 91 and 92 from the object T, or If you disconnect
The device body detects this and activates a buzzer to emit an alarm sound.

The transmitter of such an anti-theft system includes a gate type installed on both sides of a store exit,
There are a suspension type hanging down from the ceiling of the exit, and a plate-like plate type installed on the floor of the exit.

[0008]

In the conventional anti-theft system as described above, when going out of the store, it is necessary to always pass through an exit provided with a transmitter.
For example, there is a problem that it is difficult to use a store having a layout in which an entrance is not specified, such as a sales floor in a department store.

[0009] Further, in a store where an entrance is not specified or a store where a large number of entrances are provided, it is necessary to provide a place where traffic must pass after settlement, and to arrange a transmitter here. There was a problem that occurred.

[0010] The present invention has been made in view of such circumstances, for example, to transmit an anti-theft signal from a transmitter to a predetermined area such as a store, and to prevent theft when receiving the anti-theft signal By issuing an alarm when the device is not received without receiving an alarm, the device can be easily used even in a store where the entrance is not specified, and the anti-theft device and the anti-theft system using the same have no restriction on the layout in the store The purpose is to provide.

Another object of the present invention is to transmit a pause signal different from the anti-theft signal when the store is closed, and to set the alarm device of the anti-theft device to a pause state upon receiving the pause signal, By transmitting a release signal different from the signal at the time of opening the store, and releasing the sleep state of the alarm device of the anti-theft device when receiving the release signal, stopping the transmitter during the store closing to reduce power consumption. And an anti-theft system using the same.

Another object of the present invention is to provide an anti-theft device capable of simultaneously releasing the sleep state of a plurality of anti-theft devices by transmitting the release signal and causing the plurality of anti-theft devices to receive the same. An object of the present invention is to provide an anti-theft system using the same.

Further, by transmitting an anti-theft signal different from the above-described anti-theft signal to the vicinity of the exit of the store and issuing an alarm to the anti-theft signal when the anti-theft signal is received, the safety is further improved. It is an object of the present invention to provide an anti-theft device and an anti-theft system using the same.

[0014]

According to a first aspect of the present invention, there is provided an anti-theft device (10) for receiving a signal (6), analyzing the signal received by the receiver (6), and generating the signal. Determining means (7) for determining whether or not the signal is a predetermined first anti-theft signal; and control means (7) for controlling the operation of the alarm (8) based on the determination result of the determining means (7). The anti-theft device (10) comprising:
Comprises means (7) for operating the alarm (8) when the determination means (7) determines that the receiver (6) has not received the first anti-theft signal. It is characterized by.

The anti-theft device (10) according to the second invention comprises:
The anti-theft device (10) according to the first invention includes a detector (3) for detecting a state of attachment to an object (T) to be stolen, and the control means (7) includes the detector (7). A means (7) for operating the alarm (8) based on the detection result of (3) is provided.

[0016] The anti-theft device (10) according to the third invention comprises:
In the anti-theft device according to the first or second invention, the determining means (7) analyzes a signal received by the receiver (6) and the signal is different from the first anti-theft signal. Means for determining whether or not a pause signal has been received (7)
The control means (7) sets the alarm (8) to a sleep state when the determination means (7) determines that the receiver (6) is receiving the pause signal. (7).

The anti-theft device (10) according to the fourth invention comprises:
The anti-theft device (10) according to a third aspect of the present invention includes a state determination unit (7) for determining whether the alarm (8) is in a sleep state, and the determination unit (7) includes (6) is provided with means (7) for analyzing the received signal to determine whether the signal has received a release signal different from the first anti-theft signal, and the control means (7) comprises: This is a case where the state determination means (7) determines that the alarm device (8) is in the rest state, and the receiver (6) is receiving the release signal by the determination means (7). Means (7) for canceling the halt state of the alarm (8) when it is determined that:

[0018] The anti-theft device (10) according to the fifth invention comprises:
Anti-theft device (10) according to any of the first to fourth inventions
In the above, the determination means (7) analyzes a signal received by the receiver (6) and receives a second anti-theft signal different from the first anti-theft signal, the pause signal, and the release signal. Means (7) for determining whether or not the second anti-theft signal has been received by the receiver (6) by the determining means (7). It is characterized in that it comprises means (7) for operating the alarm (8) in the case.

The anti-theft system according to the sixth aspect of the present invention comprises:
An anti-theft device (10) according to any one of the fifth to fifth inventions,
A first signal transmitter (2) for transmitting the first anti-theft signal;
0).

The anti-theft system according to the seventh aspect of the present invention provides
The anti-theft system according to the present invention is characterized in that the anti-theft system further comprises a pause signal transmitter for transmitting the pause signal.

[0021] The anti-theft system according to the eighth aspect of the present invention comprises a sixth anti-theft system.
In the anti-theft system according to the invention, the first signal transmitter (20) is provided with means for transmitting the pause signal.

The anti-theft system according to the ninth aspect of the present invention provides
Alternatively, in the antitheft system according to the eighth invention, a release signal transmitter for transmitting the release signal is provided.

The anti-theft system according to a tenth aspect of the present invention is the anti-theft system according to the seventh aspect, wherein the pause signal transmitter includes means for transmitting the release signal.

An anti-theft system according to an eleventh aspect of the present invention is the anti-theft system according to the seventh or eighth aspect, wherein the first signal transmitter (20) includes means for transmitting the release signal. And

According to a twelfth aspect of the invention, there is provided an anti-theft system according to any of the sixth to eleventh aspects, further comprising a second signal transmitter (40) for transmitting the second anti-theft signal. Features.

According to a thirteenth aspect of the present invention, in the antitheft system according to any one of the sixth to twelfth aspects, the first signal transmitter (20) has a plate shape. I do.

In the case of the anti-theft device according to the first invention and the anti-theft system according to the sixth invention, if the anti-theft device is within the receivable area of the first anti-theft signal, the alarm does not operate. If there is an anti-theft device outside the area, the alarm will operate. For example, by placing the first signal transmitter so that the entire area in the store is the area, the store and the entrance where the entrance is not specified Can be easily used in stores and the like where many are provided, and there is no need to set up a checkout station near the signal transmitter in order to prevent unpaid products from being taken out of the store. The layout in the store can be made free.

In the case of the anti-theft device according to the second aspect of the present invention, the alarm operates even when the anti-theft device attached to the object is illegally removed, so that the safety can be further improved. .

In the case of the anti-theft device according to the third invention and the anti-theft system according to the seventh invention, when a pause signal is transmitted from the pause signal transmitter, each of the anti-theft devices receives this signal and turns off the alarm. Since the pausing is stopped, the alarm of each anti-theft device does not operate even when the transmission of the first anti-theft signal is stopped thereafter. Therefore, for example, by transmitting a pause signal from the pause signal transmitter when the store is closed, the operation of the first signal transmitter can be stopped without operating the alarm device of each anti-theft device.

In the case of the anti-theft device according to the third invention and the anti-theft system according to the eighth invention, when a pause signal is transmitted from the first signal transmitter, each anti-theft device receives the pause signal and outputs an alarm. Therefore, even when the transmission of the first anti-theft signal is stopped, the alarm device of each anti-theft device does not operate. For this reason, for example, the first
By transmitting the pause signal from the signal transmitter, the operation of the first signal transmitter can be stopped without operating the alarm device of each anti-theft device.

Further, since the first signal transmitter transmits the pause signal, it is not necessary to provide a transmitter for transmitting the pause signal separately from the first signal transmitter, so that the cost and the installation place can be reduced. .

In the case of the anti-theft device according to the fourth invention and the anti-theft system according to the ninth invention, when a release signal is transmitted from the release signal transmitter, each of the anti-theft devices receives the signal and outputs the signal to the alarm device. Cancel hibernation. For this reason, it is not necessary to individually release the hibernation state of each anti-theft device, and it is possible to simultaneously release the hibernation state of a plurality of anti-theft devices simply by transmitting a release signal from the release signal transmitter.

In the case of the anti-theft device according to the fourth invention and the anti-theft system according to the tenth invention, when a release signal is transmitted from the pause signal transmitter, each of the anti-theft devices receives the release signal and outputs the signal to the alarm device. Cancel hibernation. For this reason,
It is not necessary to individually release the sleep states of the respective anti-theft devices, and it is possible to simultaneously release the sleep states of a plurality of anti-theft devices simply by transmitting a release signal from the pause signal transmitter.

Also, since the pause signal transmitter transmits the release signal, it is not necessary to provide a transmitter for transmitting the release signal separately from the pause signal transmitter, and the cost and the installation place can be reduced.

In the case of the anti-theft device according to the fourth invention and the anti-theft system according to the eleventh invention, when a release signal is transmitted from the first signal transmitter, each anti-theft device receives the release signal and outputs an alarm. Cancel the hibernation state of. For this reason,
It is not necessary to individually release the hibernation state of each anti-theft device, and it is possible to simultaneously release the hibernation state of a plurality of anti-theft devices simply by transmitting a release signal from the first signal transmitter.

Also, since the first signal transmitter transmits the release signal, it is not necessary to provide a transmitter for transmitting the release signal separately from the first signal transmitter, and it is possible to reduce the cost and the installation place. .

In the case of the anti-theft device according to the fifth invention and the anti-theft system according to the twelfth invention, when the anti-theft device is located in a receivable area of the second anti-theft signal transmitted by the second signal transmitter, Since the alarm also operates, for example, the first signal transmitter is disposed so as to transmit the first anti-theft signal over substantially the entire area of the store, and the second signal transmitter is disposed at the entrance of the store.
By arranging the signal transmitter, even in the case where the owner of the transmitter capable of transmitting the first anti-theft signal takes the product out of the store, the alarm device is activated by the second theft signal. Since the device can be operated to prevent theft, the safety can be further improved.

In the case of the anti-theft system according to the thirteenth aspect, the first signal transmitter is a plate-shaped transmitter to transmit the first signal to a required area such as substantially the entire floor of a store. The first anti-theft signal can be transmitted to a required space.

[0039]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1 The present invention will be described below in detail with reference to the drawings showing an embodiment. FIG. 1 is a schematic diagram showing a configuration of a main part of a first embodiment of a theft prevention system according to the present invention. In the figure, 1
Reference numeral 0 denotes an anti-theft device. The anti-theft device 10 is attached to an object T which is a product, and the object T is displayed on a display shelf. Further, a plate-shaped first signal transmitter 20 for transmitting a first anti-theft signal which is an electromagnetic wave signal of a predetermined frequency is installed in the store.

The first signal transmitter 2 is provided on almost the entire floor surface of the store.
A plurality of recesses having substantially the same size as 0 are provided with a predetermined distance between two adjacent recesses, and the first signal transmitter 20 is fitted in the recesses. The depth of the recess is substantially the same as the thickness of the first signal transmitter 20,
When the is fitted in the recess, the floor surface is made uniform. In addition, the carpet C is laid on the floor on which the first signal transmitter 20 is installed in this way, so that the first signal transmitter 20 is not visible in appearance. By doing so, the first anti-theft signal can be transmitted to almost the entire area of the store.

FIG. 2 is an external perspective view showing an example of the anti-theft device 10 according to the present invention, and FIG. 3 is an exploded perspective view of the anti-theft device 10 shown in FIG. A printed wiring board 2, a button switch 3, and a button battery 4 are stored inside a rectangular parallelepiped outer box 1. The button battery 4 is fitted in a short cylindrical cover 5 having one end surface. is there.

A receiver 6 for receiving an electromagnetic wave signal, an alarm 8, and an alarm 8 based on a signal received by the receiver 6 and an open / close signal given from the button switch 3 are provided on one surface of the substrate 2. MPU7 that controls generation of alarm sound
Etc. are implemented. In addition, the substrate 2 is provided with four contacts 21, 21, 21, 21 and the like connected to the button switch 3.

The button switch 3 has a bar-shaped switch lever 32 protrudingly provided at the center of one surface of a switch body 31 having a rectangular parallelepiped shape so as to be able to enter and exit in the longitudinal direction. A slide switch 3 slidable in the longitudinal direction of the outer box 1 is located at a distance.
3 are provided. On a surface opposite to the installation surface of the switch lever 32 and the slide switch 33, a pair of electrodes connected to the switch lever 32 and a slide switch 3
3 and a pair of electrodes connected to the contacts 21, 21, 21
1, 21 are provided so as to abut.

When the anti-theft device 10 is mounted on the object T, the switch lever 32 penetrates and protrudes in the widthwise center near one end of the contact surface of the outer box 1 which comes into contact with the object T. A circular first hole 11 is opened, and a rectangular long hole in the longitudinal direction of the outer box 1 is provided at a position spaced a predetermined distance in the width direction from the first hole 11 so that the slide switch 33 is fitted therein. A second hole 12 is opened. The second hole 1
The periphery of 2 is tapered such that the thickness decreases toward the second hole 12. At the approximate center of the contact surface, a circular third hole 1 into which the above-mentioned cover 5 is fitted with the opening side inside.
3 is opened, and a window 14 for emitting an alarm sound from the alarm 8 is provided near the other end.

As shown in FIG. 2, the switch lever 32 is urged by a spring from the inside of the switch body 31 so as to protrude from the outer case 1 by a predetermined length, and can be pushed in the longitudinal direction. Has become. The slide switch 33 does not project from the outer box 1. Thereby, when the anti-theft device 10 is attached to the object T, a gap is prevented from being formed between the contact surface of the outer box 1 and the object T.

FIGS. 4 and 5 are explanatory views for explaining the use state of the anti-theft device 10 shown in FIG. The antitheft device 10 makes the contact surface abut on the object T, pushes the switch lever 32 into the outer box 1 to open the internal contact of the button switch 3, and in that state, wraps a synthetic resin wrap or an adhesive tape or the like. Is attached to the target object T by the attachment member.

FIG. 6 is a perspective view showing the first signal transmitter 20. The first signal transmitter 20 has a substantially rectangular plate shape, and has an antenna unit in which a conductive wire is wound inside a predetermined distance from the outer peripheral surface. Further, the first signal transmitter 20 is connected to an oscillating device 30 including an oscillating circuit and an amplifying circuit in a rectangular parallelepiped box. The first anti-theft signal is transmitted from the antenna unit by being provided to the antenna unit.

By operating the oscillation device 30, alternating currents of two kinds of frequencies different from the first anti-theft signal are supplied to the first signal transmitter 20, and the first signal transmitter 2
From 0, a pause signal and a release signal, which are electromagnetic wave signals having the same frequency as the AC current, respectively, can be output.

The pause signal and the release signal may be transmitted from a transmitter different from the first signal transmitter 20, or the pause signal and the release signal may be transmitted from different transmitters. Good.

The release signal and the pause signal may be the same signal.

The above-described anti-theft device 10 stops receiving the first anti-theft signal from the first signal transmitter 20 of the receiver 6, or when the anti-theft device 10 is removed from the object T. When the switch lever 32 starts and the internal contact of the button switch 3 is closed, the MPU 7 detects this and activates the alarm 8 to emit an alarm sound.

When the first signal transmitter 20 transmits a pause signal and the receiver 6 receives the pause signal, the MPU
7, the alarm device 8 is not operated even when the reception of the first anti-theft signal of the receiver 6 is stopped or the switch lever 32 is started up, and the sleep state for suppressing the consumption of the battery is performed. To move to. The sleep state is released when the receiver 6 receives the release signal, and can issue an alarm when the receiver 6 stops receiving the first head-prevention signal or when the switch lever 32 starts up. Transition to the operating state.

FIG. 7 is a flowchart showing the processing of the MPU 7. It is determined whether or not a release signal has been received by the receiver 6 (step S1).
Step S1 is repeated.

In step S1, if the release signal has been received, the operation mode is shifted to (step S2), and it is determined whether the first anti-theft signal has been received by the receiver 6 (step S3), and the reception is performed. If so, it is determined whether or not the button switch 3 is on (step S
4) If it is off, it is determined whether or not a pause signal has been received by the receiver 6 (step S5), and if not, the process returns to step S3.

In step S5, when a pause signal is received, the state shifts to a pause state (step S6), and the process is terminated.

If it is determined in step S3 that the first anti-theft signal has not been received, or in step S4,
If the button switch 3 is on, the alarm 8 is operated (step S7). At this time, if the stop processing has been performed by the operator (step S8), the processing ends.

With the above configuration, when the object T is taken out of the store, the anti-theft device 10 cannot receive the first anti-theft signal and issues an alarm to prevent the object T from being stolen.

Further, the anti-theft device 1 is illegally stolen from the object T.
0 is removed, the switch lever 32 starts, and M
The PU 7 detects this, activates the alarm 8 and issues an alarm to prevent the object T from being stolen.

When the store is closed, the anti-theft device 10 is put into a pause state, the first signal transmitter 20 is stopped, and a release signal is transmitted to the first signal transmitter 20 once before the store is opened. Then, a stop signal is transmitted once before the store is closed, the anti-theft device 10 is again put in the stop state, and the first signal transmitter 20 is stopped, so that unnecessary power consumption can be reduced.

Second Embodiment FIG. 8 is a schematic diagram showing a configuration of a main part of a second embodiment of the anti-theft system according to the present invention. In the figure, reference numeral 40 denotes a second signal transmitter for transmitting a second anti-theft signal which is an electromagnetic wave signal having a frequency different from that of the first anti-theft signal and the pause signal. The second signal transmitter 40 is installed near the exit of the store. The anti-theft device 10 operates the alarm 8 not only when the first anti-theft signal is not received but also when the second anti-theft signal is received.

FIG. 9 is a flowchart showing the processing of the MPU 7. It is determined whether or not a release signal has been received by the receiver 6 (step S11), and if not, step S11 is repeated.

In step S11, if the release signal has been received, the operation shifts to an operation state in which the alarm 8 can issue an alarm (step S12), and it is determined whether or not the first anti-theft signal has been received by the receiver 6. Discrimination (step S13),
If it has been received, it is determined whether or not the second anti-theft signal has been received (step S14). If it has not been received, it is determined whether or not the button switch 3 has been turned on (step S15). Is determined by the receiver 6 as to whether or not the pause signal has been received (step S1).
6) If not received, return to step S13.

In step S16, when a pause signal is received, the state shifts to the pause state (step S17), and the process ends.

If the first anti-theft signal has not been received in step S13, the process proceeds to step S14.
When the second anti-theft signal is received, or when the button switch 3 is turned on in step S15,
The alarm 8 is operated (step S18). At this time, when the stop processing is performed by the operator (step S1)
9), end the processing.

In addition, the same parts as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted.

Note that the pause signal and the release signal may be the same signal. Further, a transmitter for a pause signal different from the first signal transmitter 20 may be provided, or a transmitter for a release signal different from the first signal transmitter 20 may be provided.

With the above-described configuration, when the object T is taken out of the store, the anti-theft device 10 cannot receive the first anti-theft signal, or receives the second anti-theft signal and issues an alarm. To prevent the object T from being stolen.

Accordingly, for example, when the object T to which the anti-theft device 10 is attached is put in a bag and taken out of the store, the first anti-theft signal cannot be received or the second anti-theft signal cannot be received.
The theft signal can be received and an alarm is issued. Further, even when the person carrying the transmitter that transmits the first anti-theft signal takes the object T out of the store, the second anti-theft signal transmitted by the second signal transmitter 40 installed near the exit. Is received by the anti-theft device 10 and the alarm 8 is operated.

As described above, not only when the anti-theft device 10 is in the area where the first anti-theft signal cannot be received, but also when the
Since the alarm 8 operates even when it is in the area where the anti-theft signal can be received, it is possible to further improve the safety.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[0071]

As described in detail above, in the case of the anti-theft device according to the first invention and the anti-theft system according to the sixth invention, when the anti-theft device is located within the receivable area of the first anti-theft signal. If the alarm device of the anti-theft device does not operate and the anti-theft device is outside the area, the alarm device operates. Therefore, for example, substantially the entire area of the store where the entrance is not specified is set as the receivable area of the first anti-theft signal,
By attaching the anti-theft device to the product, it is possible to easily prevent the product from being stolen even in such a store.

Further, there is no need to set up a checkout station, which the buyer always passes through at the time of clearing, at a specific place such as near the transmitter.
The layout in the store can be made freer than before.

In the case of the anti-theft device according to the second invention, the alarm operates even when the anti-theft device attached to the product is illegally removed. Therefore, it is possible to further improve safety.

In the case of the anti-theft device according to the third invention and the anti-theft system according to the seventh invention, the pause signal transmitter transmits a pause signal different from the first anti-theft signal, and the anti-theft device transmits the pause signal. When it is received, the alarm device does not operate, and shifts to a sleep state in which battery consumption is suppressed.
Therefore, unnecessary power consumption can be reduced by, for example, transmitting a pause signal and then stopping the operation of the first signal transmitter before closing the store.

In the case of the anti-theft device according to the third invention and the anti-theft system according to the eighth invention, the first signal transmitter transmits a pause signal different from the first anti-theft signal, and the anti-theft device transmits the pause signal. Is received, the alarm device does not operate, and a transition is made to a sleep state in which battery consumption is suppressed.
Therefore, unnecessary power consumption can be reduced by, for example, transmitting a pause signal and then stopping the operation of the first signal transmitter before closing the store.

Further, there is no need to provide a pause signal transmitter separately from the first signal transmitter, and it is possible to reduce the cost and the installation place.

In the case of the anti-theft device according to the fourth invention and the anti-theft system according to the ninth invention, the release signal transmitter transmits a release signal different from the first anti-theft signal and the pause signal to prevent the theft from being suspended. When the device receives the release signal, the device releases the sleep state. Therefore, it is possible to simultaneously release the hibernation state of the plurality of anti-theft devices.

In the case of the anti-theft device according to the fourth invention and the anti-theft system according to the tenth invention, the pause signal transmitter transmits a release signal different from the first anti-theft signal and the pause signal to prevent the theft in the pause state. When the device receives the release signal, the device releases the sleep state. Therefore, it is possible to simultaneously release the hibernation state of the plurality of anti-theft devices.

Further, it is not necessary to provide a transmitter for transmitting the release signal separately from the pause signal transmitter, so that the cost and the installation place can be reduced.

In the case of the anti-theft device according to the fourth invention and the anti-theft system according to the eleventh invention, the first signal transmitter transmits a release signal different from the first anti-theft signal and the pause signal, and the theft in the pause state When the prevention device receives the release signal, the sleep state is released. Therefore, it is possible to simultaneously release the hibernation state of the plurality of anti-theft devices.

Further, it is not necessary to provide a transmitter for transmitting the release signal separately from the first signal transmitter, so that the cost and the installation place can be reduced.

In the case of the anti-theft device according to the fifth invention and the anti-theft system according to the twelfth invention, the second signal transmitter for transmitting the second anti-theft signal is arranged, for example, in the vicinity of the entrance of the store, and substantially the whole area in the store. The first signal transmitter is arranged so as to transmit the first anti-theft signal over a period of time, not only when the anti-theft device is taken out of the area where the first anti-theft signal can be received, but also when the second anti-theft signal is taken out. Since the alarm is issued even when the signal is brought into the signal receivable area, the security can be improved as compared with the related art.

In the case of the anti-theft system according to the thirteenth aspect, the first signal transmitter is a plate-like transmitter, and for example, the first signal transmitter is laid at a required position in a store to provide a required space. The present invention has excellent effects, for example, it is possible to transmit the first anti-theft signal.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing a configuration of a main part of a theft prevention system according to a first embodiment of the present invention.

FIG. 2 is an external perspective view showing an example of the anti-theft device according to the present invention.

FIG. 3 is an exploded perspective view of the anti-theft device shown in FIG. 2;

FIG. 4 is an explanatory diagram illustrating a use state of the anti-theft device shown in FIG. 2;

FIG. 5 is an explanatory diagram illustrating a use state of the anti-theft device shown in FIG. 2;

FIG. 6 is a perspective view showing a first signal transmitter.

FIG. 7 is a flowchart showing processing of the MPU.

FIG. 8 is a schematic diagram showing a configuration of a main part of a second embodiment of the anti-theft system according to the present invention.

FIG. 9 is a flowchart showing processing of the MPU.

FIG. 10 is an explanatory diagram showing a use state of a conventional anti-theft device.

FIG. 11 is an explanatory diagram showing a use state of a conventional anti-theft device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 3 Button switch 6 Receiver 7 MPU 8 Alarm 10 Anti-theft device 20 1st signal transmitter 40 2nd signal transmitter

Claims (13)

[Claims] 1. A receiver for receiving a signal, and a determination means for analyzing the signal received by the receiver to determine whether the signal is a predetermined first anti-theft signal. (7)
And a control means (7) for controlling the operation of the alarm (8) based on the judgment result of the judgment means (7), wherein the control means (7) comprises: By the judging means (7), the receiver (6) makes the first
An anti-theft device (10) comprising means (7) for operating the alarm (8) when it is determined that an anti-theft signal has not been received. 2. A detector (3) for detecting a state of attachment to an object (T) to be prevented from being stolen, wherein said control means (7) is based on a detection result of said detector (3). The anti-theft device (10) according to claim 1, further comprising means (7) for operating the alarm (8). 3. The determination means (7) analyzes a signal received by the receiver (6) and determines whether the signal has received a pause signal different from the first anti-theft signal. Means (7), wherein the control means (7) is configured to control the alarm (8) when the determination means (7) determines that the receiver (6) is receiving the pause signal. 3. The anti-theft device (10) according to claim 1 or 2, further comprising means (7) for setting a sleep state. 4. A state determining means (7) for determining whether or not the alarm device (8) is in a sleep state, wherein the determining means (7) receives a signal received by the receiver (6). Means (7) for analyzing and determining whether the signal has received a release signal different from the first anti-theft signal, and wherein the control means (7) is provided by the state determination means (7) The alarm is issued when the alarm device (8) is determined to be in a halt state and the determination means (7) determines that the receiver (6) is receiving the release signal. 4. The anti-theft device (10) according to claim 3, further comprising means (7) for releasing the sleep state of the device (8). 5. The anti-theft means (7) analyzes a signal received by the receiver (6), and the signal is different from the first anti-theft signal, the pause signal, and the release signal to a second anti-theft signal. Means (7) for determining whether or not a signal has been received, wherein the control means (7) determines that the receiver (6) has received the second anti-theft signal by the determination means (7) The anti-theft device (10) according to any one of claims 1 to 4, further comprising means (7) for operating the alarm (8) when it is determined. 6. An anti-theft device (10) according to any one of claims 1 to 5, and a first signal transmitter (20) for transmitting said first anti-theft signal. Prevention system. 7. The anti-theft system according to claim 6, further comprising a pause signal transmitter for transmitting the pause signal. 8. The anti-theft system according to claim 6, wherein said first signal transmitter (20) comprises means for transmitting said pause signal. 9. The anti-theft system according to claim 7, further comprising a release signal transmitter for transmitting the release signal. 10. The anti-theft system according to claim 7, wherein said pause signal transmitter includes means for transmitting said release signal. 11. The anti-theft system according to claim 7, wherein said first signal transmitter (20) comprises means for transmitting said release signal. 12. A second transmitting the second anti-theft signal.
An anti-theft system according to any of claims 6 to 11, comprising a signal transmitter (40). 13. The anti-theft system according to claim 6, wherein the first signal transmitter (20) has a plate shape.