JP2011129080A - Portable bag-snatching crime preventive buzzer - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem wherein a conventional portable crime preventive buzzer is manually operated by a carrying person him/herself to sound an alarm to repel a criminal, but when a crime such as bag-snatching or pickpocketing occurs, his/her belongings are already taken away and article theft damage cannot be prevented. <P>SOLUTION: A circuit for transmitting feeble radio waves of optional frequency is built in the crime preventive buzzer to be carried, and a master unit of the crime preventive buzzer with power on is carried. A slave unit of the crime preventive buzzer receiving the feeble radio waves and automatically switching a switch of an electronic relay circuit to turn on an alarm switch is mounted to the belongings. A crime occurs, and at a point of time when the feeble radio wave transmitted from the master unit exceeds an arrival range, the crime preventive buzzer of the slave unit mounted to the belongings automatically sounds the alarm to provide the crime preventive buzzer preventing article damage caused by snatching or pickpocketing of the belongings. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a slave unit equipped with a weak radio wave reception function attached to an article when a security radio buzzer, which is a master unit having a weak radio wave transmission function, exceeds an arbitrarily set range of weak radio waves. The present invention relates to a hybrid crime prevention buzzer device in which an alarm is generated when a switch of an electronic relay switching circuit of a receiver is actuated when a certain crime prevention buzzer cuts off radio waves and the switch of the crime prevention buzzer circuit is automatically turned on.

  Conventionally, a security buzzer is a warning that a carrier gives an alarm on the spot by operating a manual switch.

This has the following drawbacks.
The conventional security buzzer is a warning that is issued by the user by manually operating the switch, and even if a crime such as snatching or scratching occurs and the alarm is issued on the spot, the belongings have already been taken away. It was not possible to prevent damage to belongings.

  Provide a base unit with a weak radio wave transmission function arbitrarily set for the security buzzer and a security buzzer slave unit with the weak radio wave reception function, and attach the slave unit to an item that may be stolen. .

  Turn on the main switch (1) of the main buzzer security buzzer that is being carried, and send a weak radio wave from the transmission circuit (4) at all times. When the security buzzer always turns on the main power switch (5) of the handset, the electronic relay switch (6) turns off the security buzzer alarm circuit when it moves outside the service area of the weak power of the master and is shut off. The slave alarm (7) can be automatically sounded.

When the thief runs away with the goods, the alarm of the security buzzer (7), which is a child machine attached to the stolen goods, suddenly sounds when the weak radio wave emitted from the base unit reaches the outside of the service area. You can do it.

Since the number of handsets that can receive the same frequency as the weak radio waves transmitted by the base unit can be increased, it can be attached to multiple belongings to prevent theft damage.

When the security buzzer of the handset emits an alarm, the victim has a distance outside the service area of weak radio waves from the criminal. It can be inserted and the security buzzer (3) on the main unit will sound, so damage to the victim's body can be prevented.

The crime prevention buzzer (7) attached to the stolen belonging can ring and the criminal can be identified, so the crime deterrent effect can be enhanced.

Hereinafter, the best mode for carrying out the present invention will be described.
Security buzzer master unit having a transmission circuit (4) having a function of transmitting a weak radio wave of an arbitrary frequency, and a security buzzer slave unit having a reception circuit (8) of the weak radio wave and an electronic relay switching circuit (6) A buzzer based on this set. The present invention has the above structure.

      It is a simple circuit diagram of the crime prevention buzzer master of the present invention.       It is a simple circuit diagram of the security buzzer cordless handset of the present invention.       It is the action | operation schematic diagram at the time of the crime occurrence of the crime prevention buzzer of this invention.

1 Main power switch of the security buzzer master unit 2 Alarm circuit manual switch of the security buzzer master unit 3 Alarm buzzer of the security buzzer master unit 4 Weak radio wave transmission circuit of the security buzzer master unit 5 Main power switch of the security buzzer slave unit 6 Security buzzer child Electronic relay switch circuit for the machine 7 Crime prevention buzzer alarm circuit for the security buzzer slave 8 Weak radio wave reception circuit for the security buzzer slave

Claims (3)

  An alarm circuit is switched on by automatically switching the electronic relay circuit switch by receiving the weak radio wave and automatically switching the electronic relay circuit switch with the master switch that combines a manual switch type security buzzer with a transmitter circuit that transmits a weak radio wave of any frequency It is a security buzzer consisting of a handset that emits.   At the time when the weak radio wave of the arbitrary frequency of the main unit is exceeded, the current flowing from the reception circuit of the slave unit is cut off, so that the switch of the electronic relay switching circuit is switched and the alarm switch of the security buzzer is turned on. This is a security buzzer that automatically sounds the alarm.   The weak radio waves used between the main unit and the sub unit can use infrared rays having the same effect.

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