JP3020377B2 - Anti-theft device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an anti-theft device capable of preventing the intruder who has entered a specific security area from obstructing the view of the intruder and depriving the intruder of his / her freedom of action. More specifically, the present invention relates to an anti-theft device for preventing a false alarm of a fire by canceling a fire detection output of a smoke detector provided in the guard area.

[0002]

2. Description of the Related Art Conventionally, various kinds of money in a room or
As a measure to prevent theft and vandalism of valuables,
For example, in a predetermined guard area, when an intruder invades, the intrusion of the intruder is detected by appropriate detection means set at a predetermined position in the guard area, and the intruder enters the guard area. The release of tear gas or odorous gas, or the generation of smoke or vapor, creates a situation in which an intruder cannot stay in the guard area, gives up its action, and gives up the action. By letting it escape early,
Methods for preventing such theft or vandalism have been proposed.

[0003] However, there has been a problem that such tear gas, odorous gas, smoke, or the like causes a smoke detector installed in the caution area to be activated to erroneously report the occurrence of a fire.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the problems in the prior art and to fill the area with smoke when an intruder is present in the area. By restricting the view of the intruder, the intruder's freedom of action is prevented, thereby preventing theft and vandalism, and canceling the fire signal of the smoke detector provided in the guard area. Therefore, an object of the present invention is to provide an anti-theft device that can eliminate a false alarm that a fire occurrence signal is output when a fire is not occurring.

[0005]

The present invention employs the following technical configuration to achieve the above object. That is, in an anti-theft device configured to include an intrusion sensor that detects an intruder's invasion and destruction into the guard area, and a generator that generates smoke or fog in the guard area, A smoke detector for detecting a fire in the guard area is provided, and when the generator starts in response to a detection output of the intrusion sensor, the fire detector cancels the fire generation signal of the smoke detector. This is an anti-theft device having a canceling means.

[0006]

Since the anti-theft device according to the present invention has the above-described technical configuration, when the intrusion sensor detects an intruder who has intruded into the guard area, the generating device is configured to: For example, with respect to the human body, a fuming substance mainly composed of substantially harmless alcohol is vaporized by heating to generate smoke, and the inside of the guard area is filled with the smoke, thereby restricting the visibility of the intruder. As a result, it becomes impossible to operate in the guard area, and the smoke detector detects the generation of the smoke and outputs a fire occurrence signal to the smoke detector. However, by positively canceling the fire occurrence signal, there is no false alarm of the fire occurrence, and finally it is possible to lead to the arrest of the intruder.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a specific example of an anti-theft device according to the present invention. FIG. 1 is a diagram illustrating the configuration of a specific example of the anti-theft device according to the present invention. In the figure, an anti-theft device configured to include intrusion sensors 31 and 32 for detecting an intruder's invasion and destruction into the security area 1 and a generator 4 for generating smoke in the security area 1. In the guard area 1, a smoke detector 8 for detecting a fire in the guard area 1 is provided, and the generator 4 is activated in response to the detection output of the intrusion sensors 31, 32. In this case, an anti-theft device having canceling means for canceling the fire occurrence signal of the smoke detector 8 is shown.

In the anti-theft device according to the present invention, in the security area 1, for example, a security object, an expensive product such as a precious metal, a security object such as an exhibition art object, etc. are arranged. The security zone 1 is provided with a window 21 and an entrance 22, and the windows 21 and the entrance 22 are provided with known intrusion sensors 31, 32. When the intrusion sensors 31 and 32 detect an intruder, it is preferable that the abnormality information be transmitted to a remote security center via an alarm device (not shown).

By further providing the intrusion sensors 31 and 32 and a generator 4 for emitting smoke into the security area 1 in response to the output of the intrusion sensors 31 and 32,
An anti-theft device is configured. In the security zone 1, a smoke detector 8 for detecting the occurrence of a fire by smoke and a heat detector 9 for detecting the occurrence of a fire by heat are provided.

[0010] In the antitheft device having the above-mentioned configuration, the smoke detector 8 is connected, for example, via a relay contact rl.
The heat detector 9 is directly connected to the fire receiving board 5. The location of the fire receiving panel 5 may be inside the security zone 1 or outside the security zone 1. Further, it is preferable to install, in the caution area 1, a smoke notification unit 6 that gives advance notice of smoking before the generator 4 emits smoke and notifies the user with audio information indicating that smoke is being emitted during emission. Further, it is preferable to install a smoke display means 7 for indicating that the smoke is generated based on the generator 4 at an appropriate position on the outer periphery of the guard area 1.

Further, the type and number of the intrusion sensors 31 and 32 used in the present invention can be appropriately set. In other words, a system that can detect the intruder in a state where there is no blind spot in the guard area 1 may be adopted. Further, the generator 4 used in the present invention has no adverse effect on the human body in place of the conventionally used tear gas or odor gas, and the odor remains in the guard area 1. In addition, it is desirable that smoke is generated rapidly and the inside of the guard area 1 is filled with smoke, and that the smoke is high in concentration and completes the view of intruders in the guard area. It is desirable that the intruder be unable to perform actions such as destroying or carrying an object to be watched in the watch area 1 within the watch area 1.

It is preferable that the smoke-generating component used in the generator 4 according to the present invention is mainly composed of an alcohol component, and more specifically, is composed of a dihydric alcohol-based component. Something is desirable. In the present invention, examples of the fuming substance capable of efficiently producing smoke by suitable vaporization include, for example, a mixture of tripropylene glycol, propylene glycol, 1,3-butanediol, water and the like as appropriate.

By using the above-mentioned fuming substance,
By elevating the temperature to about 200 ° C., it is possible to vaporize in a short time and generate the required concentration of smoke, and the fuming substance contains petroleum components such as kerosene and mineral substances. There is no unpleasant odor or pungent odor, so there is no adverse effect on the human body. Further, even when the temperature is lowered, there is no problem that the deposited impurities and the like of the component stay and spray harmful substances. Instead of smoke, a vapor to which a colored harmless substance is added may be used.

FIG. 2 schematically shows the structure of a specific example of the generator 4 used in the present invention. The liquid as the smoke-producing substance is stored in the main body 400 of the generator 4. At the same time as the storage section 42 is provided, the fuming substance sucked up from the storage section 42 is injected into a heating area 47 constituted by a suitable heating element 46 such as a ceramic heater, where vaporization and fume generation is performed. Will be

The heating element 46 is heated by a suitable heating means 48 such as electric heating. It is desirable that each of the above-described members is mounted on, for example, an appropriate rotating pedestal 41. In this way, the vaporized and smoked substance passes through the outlet from the appropriate nozzle section 43 and passes through the guard zone 1
Preferably, a fan 44 and the like are provided at the upper and rear portions of the nozzle, and a downward louver 45 is provided at the front portion of the fan 44.

The louver 45 can be changed left and right and up and down. The generated smoke is light and tends to rise immediately above the sky. However, since the wind from the fan 44 blows downward through the louver 45, the smoke is quickly blown downward immediately after blowing. It is desirable to fill the guard area 1. FIG. 3 shows a schematic configuration of a cross-sectional view taken along line AA of the generator 4 shown in FIG.

The nozzle 43 includes a heating element 46 and a heating means 48.
Together with the rotating base 41. Therefore, by rotating the rotary pedestal 41 right and left, the nozzle can be set at a desired position as needed. In addition, a rotatable front surface portion 40 having an air outlet is provided on the front surface of the nozzle 43 of the generator 4.

Therefore, after the position of the nozzle 43 is set, the front surface portion 40 is rotated so that the outlet is located at the front surface of the nozzle 43. In the present invention, when the intrusion sensors 31 to 32 detect an intruder and output a smoke start signal via the control means 5 in response to the detection signal, the inhaler immediately causes the smoke component to emit smoke. Therefore, it is required to fill the guard area 1 with the smoke. Therefore,
Since it is necessary to cause the smoke component to emit smoke rapidly, the heating element 46 of the generator 4 is activated, for example, when an alert mode is set by a not-shown alert mode setting device, or when the power is turned on. However, it is desirable that the apparatus be configured so that the apparatus is always preliminarily heated and, when the smoke start signal is output, the temperature is sequentially increased to a predetermined smoke allowable temperature to execute the smoke injection. .

That is, in the generator 4 of the present invention, it is desirable that the heating element 46 be constantly heated to a predetermined temperature in order to rapidly heat the smoke generating component. Therefore, it is preferable that the heating element 46 has a predetermined temperature sensor, for example, a thermistor.

Next, the canceling means used in the antitheft device according to the present invention will be described with reference to FIG. The generator 4 is, as described above, a control means 4 for receiving the intruder detection signals of the intrusion sensors 31, 32.
9 (see FIG. 2), the control means 49 includes a flip-flop 491 for storing intruder detection information, and a relay RL that operates when a signal is input to the set terminal S of the flip-flop. I have.

The reset terminal R of the flip-flop 491 is connected to a reset button 10 for stopping the activation of the generator 4. When the smoke is injected into the guard area 1 by the generator 4, the smoke detector 8 is activated even if it is not a fire, and the fire receiving board 5 is erroneously fired due to the principle of the smoke detector 8. Will be reported.

Therefore, the generator 4 receives a signal output when the intrusion sensors 31 and 32 detect an intruder, and when the generator 4 is activated, the smoke detector 8 always fires. It is necessary to cancel the generation of the generation signal or the notification signal. Therefore, in the present invention, when the intruder detection signals of the intrusion sensors 31 and 32 are input to the set terminal S of the flip-flop 491, as shown in FIGS. In operation, the relay contact rl is opened so as to turn off the signal between the smoke detector 8 and the fire receiving board 5, whereby the fire occurrence signal output from the smoke detector 8 is turned off. The notification to the fire receiving board 5 can be canceled.

In another embodiment of the present invention, a heat detector 9 is used in addition to the smoke detector 8, so that if an intruder ignites, etc. Since the heat detector 9 reliably detects a fire, it is possible to simultaneously and accurately detect an intruder and a fire. Therefore, even when a fire actually occurs, it is possible to prevent a false alarm that a fire has not occurred.

In the present invention, it goes without saying that a composite fire detector in which the smoke detector 8 and the heat detector 9 are integrated may be used. In this embodiment, the signal lines of the smoke detector 8 and the fire receiver 5 are cut off, but the input terminal of the fire receiver 5 for receiving the fire signal of the smoke detector 8 is cut off. It is good.

That is, the fire signal of the smoke detector 8 during activation of the generator 4 according to the present invention can be canceled by the canceling means, and the fire receiving board 5 cannot detect the occurrence of fire. It is also possible. Incidentally, the canceling means in the present invention may have a circuit configuration other than that configured by the flip-flop circuit 491 in the control circuit 49 provided in the generator 4 as described above. A control circuit having any circuit configuration can be used as long as it achieves the function.

Further, the circuit controlled by the flip-flop circuit 491 of the canceling means in the present invention is not limited to the relay RL, and may stop the generation of a fire signal from the smoke detector 8. Any circuit having any circuit configuration can be used as long as it has a function of cutting off a line for reporting the fire signal to the fire receiving panel 5.

In the anti-theft device according to the present invention, when an intruder or the like is detected in the guard area 1,
The smoke generating means 4 is driven to fill the smoke in the security area 1 and at the same time, the doorway, windows and the like of the security area 1 are locked by an electronic lock or the like, and thereafter, the third person is locked in the security area 1. It is desirable to configure so as not to be included in 1.

In the above-described embodiment of the present invention, an example is shown in which the control means 49 is incorporated in the generator 4. However, the present invention is not limited to such a configuration. Alternatively, the control means 49 may have a configuration that is not built in the generator 4.

[0029]

Since the anti-theft device according to the present invention employs the above-described technical configuration, when the intrusion sensor detects an intruder in the security area 1, the anti-theft device is activated. For the human body, a substantially harmless alcohol-based smoke-producing substance is vaporized by heating to generate smoke, and the inside of the guard area is filled with the smoke to restrict the visibility of the intruder. By causing the smoke detector to cancel the fire occurrence signal, there is no erroneous fire report, and ultimately, the intruder can be arrested.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an example of an entire system of an anti-theft device according to the present invention.

FIG. 2 is a block diagram showing an example of a configuration of a generator used in the present invention.

FIG. 3 is a block diagram showing an AA cross-sectional view of FIG. 2;

FIG. 4 is a block diagram showing an example of a main part of control means of a generator used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... In guard area 4 ... Generating device 5 ... Fire receiving panel 6 ... Smoke alarming means 7 ... Smoke emitting display means 8 ... Smoke detector 9 ... Heat detector 10 ... Reset button 31, 32 ... Intrusion sensor 49 ... Control means

Claims (2)

(57) [Claims] 1. An anti-theft device, comprising: an intrusion sensor for detecting an intruder's invasion and destruction into a guard area; and a generator for generating smoke or fog in the guard area. In the guard area, a smoke detector that detects a fire in the guard area is provided, and the generator is
When activated in response to the detection output of the intrusion sensor,
An anti-theft device having cancellation means for canceling a fire occurrence signal of the smoke detector. 2. The anti-theft device according to claim 1, wherein said canceling means comprises a relay.