JPH0441430Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an anti-theft alarm device for preventing theft of displayed products.

[Conventional technology]

Conventionally, as a device to prevent shoplifting and other theft of displayed products, for example, a tag equipped with a small transmitter is attached to the product, and a detection gate is installed that receives radio waves from the transmitter and emits an alarm sound. A device is known that is installed at the entrance of a store so that when a shoplifted item passes through the detection gate, an alarm sound is emitted from the gate.

[Problem that the invention attempts to solve]

However, with the device configured as described above, it is impossible to detect shoplifting if the tags are removed from the products in the store and only the products are taken out, and even if the detection gate sounds an alarm, If multiple people are passing through the detection gate, it may not be possible to identify the person who shoplifted, and in some cases, there is a risk that troubles such as human rights issues may occur.

This invention was developed in view of the above-mentioned circumstances, and by providing the tag itself with a notification function, it is possible to identify shoplifters at the detection gate. To provide an anti-theft alarm device capable of emitting an alarm sound even when an attempt is made to take out only a product by separating the items from the product, and also emitting an alarm radio wave along with the alarm sound.

[Means for solving problems]

In order to achieve the above object, the present invention includes an alarm means that is directly or indirectly attached to a product, and has an alarm means that emits an alarm sound, a transmitter that emits an alarm radio wave of a predetermined frequency, and a device that senses when it is separated from the product. and switching means for activating either or both of the alarm means or the transmitting means when the warning means or the transmitting means is detected.

[Effect]

At the detection gate, the alarm itself emits an alarm sound, making it possible to identify the shoplifter.Also, since the alarm sounds when the product and the alarm are separated, it is possible to identify the shoplifter. Shoplifters can also be detected if they try to take the items with them. Furthermore, since the notification device emits an alarm sound as well as an alarm radio wave, the receiver that receives the alarm signal can also detect the occurrence of shoplifting.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings. FIG. 1 shows an anti-theft device 1 using an alarm device 3 of the present invention.
and a notification device 3 fixed to one side of the product storage section 2. The upper surface of the product storage section 2 is opened to form a product storage port 4 through which products such as cassette tapes, video tapes, compact disks (CDs), records, etc. are taken in and taken out.

Inside the casing of the notification device 3, as shown in FIGS. 4 and 5, a power supply circuit 2
3 is turned ON, and the power supply circuit 2 is turned on by the ON operation.
A switching circuit 24 that receives power supply from 3 to maintain ON operation, and a switching circuit 24 that receives power from
The small battery 22 of the power supply circuit 23 is turned on by the ON operation.
a buzzer circuit 25 which emits an alarm sound when supplied with power from the above, and an FM transmitter circuit 27 which receives power when the switching circuit 24 is turned on and transmits an alarm radio wave of a specific frequency using a crystal oscillator 26.
and its transmitting antenna 28 are housed therein. Further, the switching circuit 24 operates to obtain a base current of the transistor T serving as a switching element by a magnetic field current generated in the parallel winding coil 29.
It is connected to the parallel winding coil 29 through a half-wave rectifier circuit 31 including two diodes D and D.

Reference numeral 20 denotes a separate detector that is provided in the notification device 3 and detects the operation of the operation terminal 5, which will be described next. That is, on the inner surface of the notification device 3 on the side of the storage section 2, an operating terminal 5, which is always biased toward the product storage section 2 side by an unillustrated resilient means, is retractably installed. When the operating terminal 5 protrudes toward the product storage section 2 as shown in FIG. 1, the separation detector 20 detects this and turns on the switching circuit 24.
Then, the buzzer circuit 25 and the transmitting circuit 27 are activated to emit an alarm sound and an alarm radio wave. In addition, when the product 6 is stored in the product storage section 2 and the operating terminal 5 is pressed against the notification device 3 side as shown in Fig. 2, the switching circuit 24 is turned off to disable the alarm sound and alarm radio waves. It is configured so that it does not emit.

Further, a key hole 7 is provided on the top surface of the notification device 3, and when a predetermined key is inserted into this key hole 7 and pulled out, the switching circuit 24 will be turned OFF, and the alarm will not sound or alarm in any case. It is configured so that it does not emit radio waves.

Therefore, the notification device 3 emits an alarm sound and alarm radio waves only when the activation terminal 5 protrudes toward the product storage section 2 and when the switching circuit 24 detects the radio waves transmitted from the detection gate 35. There is.

Further, 40 is a receiver installed in the store, for example, behind the register or in a separate room, which receives the alarm radio waves transmitted from the transmitting circuit 27 of the notification device 3, and makes an announcement such as emitting an alarm sound from the speaker 41. This is what we do. Furthermore, 42 is a portable receiver that receives the alarm radio waves transmitted from the transmitting circuit 27,
It emits an alarm sound.

Therefore, as shown in Figure 2, the product 6 is stored in the product storage section 2.
(CDs in the figure) are stored and displayed, and when a shoplifter pulls out the product 6 from the storage compartment 2 and tries to take it away, the activation terminal 5 is hit by the biasing force of the triggering means as shown in Figure 1. As a result, the separation detector 20 detects this because it protrudes toward the product storage section 2 side.
Due to this action, the switching circuit 24 is turned on, and the annunciator 3 emits an alarm sound as well as an alarm radio wave, which is also notified by the speaker 41 etc. via the receiver 40 that receives this radio wave. Therefore, the occurrence of shoplifting can be detected even in stores with few employees or stores with a large sales floor.

Additionally, if a shoplifter attempts to take away the anti-theft device 1 with the product 6 still stored, a radio wave emitted from the gate 35 will be alerted near the detection gate 35 installed at the store entrance. The device 3 detects this and turns on the switching circuit 24, so an alarm sound and radio waves are emitted. In this case, the alarm sound and alarm radio waves are emitted from the anti-theft device 1 itself, not from the detection gate, so even if multiple people are passing through the detection gate, the shoplifter cannot be identified. I can do it.

Therefore, in this case, even if the anti-theft device 1 is hidden in a bag or clothes so that the alarm sound cannot be heard, the alarm radio waves are received by the receiver 40 and notified. The occurrence of shoplifting can be known, and if the portable receiver 42 is brought close, an alarm will sound, so the shoplifter can be identified.

In addition, when a normal sale is completed, the store clerk inserts a predetermined key into the key hole 7 of the notification device 3 and pulls it out, thereby emitting an alarm sound and an alarm radio wave even if the product 6 is removed from the storage section 2. Never.

Next, another embodiment of the anti-theft device will be described with reference to FIG. In the anti-theft device 11 of this embodiment, a notification device 13 having the same structure as that of the previous embodiment is installed in the product storage section 12.
By fixing it to the lower end of the notification device, the overall width L is reduced, and the internal configuration of the notification device 3, the operating terminal 15, the key hole 17, and other configurations and functions are completely the same as in the previous embodiment. Therefore, its explanation will be omitted.

Note that the notification device 3 may be attached to a product using a special string 50, as shown in FIG. 6, for example. In this case, the string 50 is a conductor circuit that short-circuits the collector and base of the transistors of the switching circuit 24, and when the string 50 is cut with a knife or the like by a shoplifter, the switching circuit 24 is cut. It is configured to be turned on and emit an alarm sound and alarm radio waves.

[Effect of idea]

As explained above, according to the present invention, when a shoplifter passes through the detection gate, the alarm itself emits an alarm sound, so the shoplifter can be identified and troubles such as human rights issues can be prevented. can do. Additionally, an alarm is emitted even when the user tries to separate the notification device and the product and take away only the product, so shoplifting can be prevented. Furthermore, in any of the above cases,
Since an alarm radio wave is also emitted along with the alarm sound, the receiver that receives this signal can also be notified of the occurrence of shoplifting, and is particularly effective in cases where the alarm is hidden so that the alarm sound cannot be heard or in a large store. It is true.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing one embodiment of the anti-theft device using the alarm according to the present invention, Fig. 2 is a front view of the product stored, and Fig. 3 is another embodiment of the anti-theft device. 4 is a block diagram showing the relationship between the notification device and external devices, FIG. 5 is a circuit diagram inside the notification device, and FIG. 6 is a perspective view showing another example of how the notification device is used. be. 3, 13...Announcer, 6...Product, 22...Power source, 25...Buzzer circuit, 27...Template circuit, 3
5...Detection gate.

Claims (1)

[Scope of utility model registration request] Directly or indirectly attached to the product, internally,
An alarm means that emits an alarm sound, a transmitter that emits an alarm radio wave of a predetermined frequency, and either the alarm means or the transmitter when it senses that it has been separated from the product or when it detects the radio wave transmitted from the detection gate. An anti-theft alarm comprising switching means for activating one or both of them.