Intrusion prevention device

Abstract

To provide an intrusion prevention device capable of making an intruder abandon intrusion before carrying out the intrusion regardless of indoor / outdoor.SOLUTION: An intrusion prevention device 1 includes: a negative charge radiation device 11 for radiating negative ions to charge an object existing in an object space which is the space on an outside of a door 60 or a window 70 arranged in a wall being a partition between a protection area requesting protection against intrusion and an outside of the protection area and also which is the object space within a range of at least a reachable distance to the door 60 or the window 70; and a first power supply device 12 for supplying a voltage for enabling the negative ions to be radiated from the negative charge radiation device 11 to the negative charge radiation device. When a hand of an intruder approaches or touches the door 60 or the window 70, a discharge phenomenon is caused, thereby delivering an electric shock to the intruder.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an intrusion prevention device that prevents would-be thieves from invading a building from the outside. [Background technology]

[0002] In recent years, the time between breaking into a building and leaving has become as short as about five minutes, meaning that police officers and security guards may not be able to arrive at the scene before the thief leaves. Therefore, devices that deliver electric shocks to would-be thieves have been proposed. This can sometimes cause the thief to give up before committing the crime.

[0003] Conventional techniques of this type are described in Patent Document 1 and Patent Document 2. Patent Document 1 discloses a security device in which a hook that can be hooked onto the body or clothing of an intruder is placed in a security space, and an intruder who gets caught on the hook is electrocuted. Patent Document 2 discloses a glass door in which a metal electrode is attached to the non-metallic surface of the glass door and a high voltage is applied to this metal electrode via a transformer that generates a very low high-frequency current, so that if an intruder attempts to break through the glass door, the glass will easily break and an arc will immediately be ignited, giving the intruder a sudden shock. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 6518970 [Patent Document 2] Special Publication No. 08-511366 Summary of the Invention [Problem to be solved by the invention]

[0005] The security device described in Patent Document 1 involves placing multiple wires with multiple hooks hanging from them in a security-protected space, and energizing anyone who touches the hooks or wires. However, this device requires that the hooks and wires be appropriately distributed in the security-protected space where intruders are likely to visit. Furthermore, because the hooks are energized via the wires, it is necessary to prevent the multiple hooks or wires from moving in the wind and coming into contact with each other, causing a short circuit. For this reason, this device is suitable for indoor use, but difficult to use outdoors.

[0006] Furthermore, in the device described in Patent Document 2, when the glass is broken, an intruder receives a sudden shock, which causes the owner of the building to suffer damage from the broken glass. For this reason, in order to minimize damage, it is desirable to have a device that will make an intruder give up on illegally entering a building before breaking the glass.

[0007] The present invention has been made in view of the above-mentioned problems, and aims to provide an intrusion prevention device that can make an intruder give up an intrusion attempt before actually carrying it out, whether indoors or outdoors. [Means for solving the problem]

[0008] In order to achieve the above object, the present invention has the following configuration.

[0009] (1) A charge emission device (negative ion generator, corona discharge device) that emits a charge of a first polarity toward a target space that is a space outside a door or window provided in a wall that separates a protection area that requires protection against intrusion from the outside of the protection area and is at least within reach of the door or window, so as to charge an object in the target space; An intrusion prevention device comprising: a first power supply device that supplies a voltage to the charge emission device that enables the charge emission device to emit electric charges.

[0010] Generally, an intruder attempting to enter a protected area from the outside through a door or window approaches the door or window from the outside and, within the target space within reach of the door or window, comes into contact with a part of the door or window either directly or indirectly through a tool in order to open or destroy it. According to (1), the charge emission device, supplied with voltage from the radiation power supply, emits a charge of a first polarity (e.g., negative polarity) toward the target space. As a result, an intruder in the target space and a metal demolition tool (e.g., a crowbar) carried by the intruder are charged with the first polarity. That is, a charge accumulates in the intruder and the demolition tool. When the intruder touches or approaches a part of the door or window, the accumulated charge instantaneously flows between the part of the door or window and the intruder due to a discharge phenomenon. That is, when the intruder touches or approaches the door or window, or when the metal demolition tool (e.g., a crowbar) carried by the intruder touches or approaches the door or window, a discharge phenomenon occurs, and the intruder is given an electric shock. This allows the intruder to be given an electric shock before breaking the door or window in the wall separating the protected area from the outside, thereby reducing the intruder's motivation to attempt an intrusion. Furthermore, the charge emission device delivers an electric shock by emitting a charge toward the target space. Therefore, according to (1), installation is easier than, for example, laying wiring at specific locations on a door or window, and it is less likely to spoil the aesthetic appearance of the door or window or to be easily discovered by an intruder who is focused on the door or window. Furthermore, according to (1), compared to distributing electric wires throughout the space of the protected area, it is less likely that the electric wires will sway in the wind or be easily discovered by an intruder attempting to enter the protected area. Therefore, according to (1), an intruder attempting to enter a protected area, whether indoors or outdoors, will hesitate to open or destroy the door or window. Furthermore, even if they continue to try to open or destroy the door or window, it is expected that it will take longer to break in. As a result, it is possible to make an intruder give up on their intrusion before they actually attempt it.

[0011] (2) In (1), the intrusion prevention device further comprises a second power supply device that applies a voltage of a second polarity (e.g., positive polarity) opposite to the first polarity (e.g., negative polarity) to the frame member of the door or the window, the opening and closing operation member of the door or the window, or a combination thereof.

[0012] According to (2), when an intruder touches a door or window, or when a metal demolition tool carried by the intruder touches the door or window, the intruder is given an electric shock by the voltage (e.g., positive voltage) from the second power supply. Therefore, even in a situation where the charge radiated from the charge radiating device is likely to escape from the intruder to the ground before touching or approaching the door or window, such as when the intruder is wearing conductive footwear, the electric shock can be given more reliably. Conversely, if the charge radiated from the charge radiating device is likely to accumulate on the intruder, the intruder will be charged to the first polarity. Since the door or window is at the potential of the second polarity, the electric shock can be given efficiently. Therefore, there is a higher possibility that the damage caused by the intruder will be kept to a minimum.

[0013] (3) In (1) and (2), the door or the window can be freely opened and closed, and the door or the window can be kept closed by locking it with a locking means (key), An intrusion prevention device further comprising charging means for charging the door or window frame and the locking means to a second polarity opposite to the first polarity.

[0014] According to (3), if an intruder tries to break a window or door from outside the building, for example, an electric shock can be administered to the intruder, which increases the likelihood of minimizing the damage caused by the intruder.

[0015] (4) In (1) to (3), the charge emission device is arranged in a space outside the door or the window, and is characterized in that it comprises an ion generating means for spraying negative ions at intruders in the target space.

[0016] According to (4), it is possible to negatively charge an intruder in a short time.

[0017] (5) In (1) to (4), an approach detection means for detecting an intruder's approach to the door or the window; An intrusion prevention device further comprising: control means for activating the first power supply device when the approach detection means detects the approach of an intruder.

[0018] According to (5), if an intruder is identified, the first power supply device can be activated to charge the intruder. [Effects of the Invention]

[0019] According to the present invention, it is possible to provide an intrusion prevention device that can make an intruder give up an intrusion attempt before the intruder actually attempts to intrude, whether indoors or outdoors. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a side view schematically illustrating an overview of an intrusion prevention device according to an embodiment of the present invention. [Figure 2] 1 is a block diagram showing a control system of an intrusion prevention device according to an embodiment of the present invention; DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view schematically illustrating an intrusion prevention device 1 according to one embodiment of the present invention. The intrusion prevention device 1 is installed in a building 100. In this embodiment, the interior of the building 100 is an example of a protected area that requires protection against intrusion. The intrusion prevention device 1 acts against intruders who approach the internal protected area from outside the building 100. A wall 102 of the building 100 separates the protected area from the outside. A door 60 and a window 70 are installed in the wall 102 of the building 100. The door 60 and the window 70 can be opened and closed freely. A safe 110 is also installed inside the building 100.

[0022] The door 60 is rotatably supported by a door frame 61. The door frame 61 is attached to a wall 102 of the building 100. The door 60 is provided with a doorknob 62, and by operating this doorknob 62, the door 60 can be rotated relative to the door frame 61, thereby making it possible to open and close the space enclosed by the door frame 61. The doorknob 62 also has a locking function, and by locking it, the door 60 is kept closed.

[0023] The window 70 is supported inside a window frame 71 so that it can slide freely. The window frame 71 is attached to a wall 102 of the building 100. The window 70 comprises a rectangular glass plate 70a and an inner frame 70b that surrounds the periphery of the glass plate 70a. Two rails extending horizontally are arranged in parallel on the inner frame surfaces of the window frame 71 that face each other above and below. By sliding the two windows 70, it is possible to open and close the space enclosed by the window frame 71. The inner frame 70b is equipped with an opening / closing operation member 70c for sliding the window 70. The window 70 is also provided with a crescent lock 72 that connects the two windows 70 together to keep the windows 70 closed. The door knob 62 with a locking function and the crescent lock 72 are examples of locking means.

[0024] The intrusion prevention device 1 targets intruders in target spaces S1 and S2. The target spaces S1 and S2 are spaces outside the door 60 or window 70, and are spaces within a reachable distance of the door 60 or window 70. FIG. 1 shows the target space S1 located outside the door 60 and the target space S2 located outside the window 70. The target spaces S1 and S2 are within a range of, for example, approximately 70 cm from the door 60 or window 70. If a person stands within a range of approximately 70 cm from the door 60 or window 70, there is a high possibility that the person's hand will reach the door 60 or window 70. However, the target space in the present invention may be set to be wider than the reachable distance of the door 60 or window 70 . Intruders attempting to enter a protected area inside the building 100 often open or destroy the door 60 or window 70. In this case, the intruder first enters the target space S1 or target space S2. The intruder then directly or indirectly comes into contact with the door 60 or window 70. For example, the intruder inserts a crowbar into the gap between the door 60 and the door frame 61 to pry it open. Or, for example, the intruder manipulates the doorknob 62. Or, for example, the intruder inserts a picking tool into the doorknob 62 to try to unlock it. Or, for example, the intruder inserts a crowbar into the gap between the window frame 71 and the window 70 to pry it open. Or, for example, the intruder holds the inner frame 70b of the window 70 with their hands or a tool in order to break the glass plate 70a near the crescent lock 72. The intrusion prevention device 1 gives an electric shock to an intruder who enters the target space S1 or the target space S2 and comes into contact with the door 60 or the window 70.

[0025] The intrusion prevention device 1 includes a negative charging device 10. The intrusion prevention device 1 also includes a monitoring camera 30 and a control device 50 (see FIG. 2).

[0026] The negative charging device 10 includes a negative charge emitting device 11 and a first power supply device 12. Two negative charge emitting devices 11 are shown in the figure.

[0027] The negative charge emission device 11 emits electric charges to charge objects in the target space S1 outside the door 60 and the target space S2 outside the window 70. The negative charge emission device 11 is disposed outside the building 100. For example, the negative charge emission device 11 is disposed above the door 60 and the window 70 of the building 100 and near the door 60 and the window 70. The negative charge emission device 11 emits negative electric charges to charge objects in the target spaces S1 and S2 negatively. Negative is an example of a first polarity. Objects in the target space S1 include people in the target spaces S1 and S2. The negative charge emission device 11 emits negative ions into the target spaces S1 and S2. The negative charge emission device 11 has a negative ion generating unit that generates negative ions by, for example, corona discharge. The negative charge emission device 11 has, for example, a thin, linear or needle-shaped metal electrode (not shown) and generates negative ions by air discharge at this electrode. The negative charge emission device 11 emits negative ions within a predetermined range. The negative charge emission device 11 is an example of an ion generating means. Note that corona discharge is just one example, and any device that can generate negative ions can be used as the negative charge emission device 11.

[0028] For example, the negative charge emission device 11 is installed on the eaves 101 above the door 60 or window 70, and is positioned so that it sprays negative ions downward in a shower-like manner. As a result, objects in the shower space are negatively charged by the negative ions. The target spaces S1 and S2 within reach of the door 60 or window 70 are included in this shower space.

[0029] The first power supply device 12 supplies the negative charge emission device 11 with a voltage capable of emitting negative ions for negative charging. The first power supply device 12 supplies, for example, a negative voltage of 500V to 1000V (-500V to -1000V). When the first power supply device 12 supplies a voltage of, for example, 500V to 1000V, the negative charge emission device 11 can emit negative ions. When the negative charge emission device 11 is charged by receiving a negative ion emission (shower), an electric shock can occur upon contact. For example, when the first power supply device 12 supplies a negative voltage of, for example, 1000V or more, an electric shock can occur upon contact even when the negative ion emission (shower) is received and charged for a short period of time. The first power supply device 12 may be provided integrally with the negative charge emission device 11.

[0030] As a result of the operation of the negative charge emission device 11, the electrostatic charge voltage of a person in the target space S1, S2 or a tool carried by that person varies depending on the voltage of the first power supply device 12, the type of electrode, the position in the target space S1, S2, humidity, clothing, and type of footwear. The output voltage of the first power supply device 12 is set so that the electrostatic charge potential of the person becomes 500V or higher in a few seconds. The output voltage of the first power supply device 12 is set so that the electrostatic charge potential of the person becomes 2500V or lower in a few seconds. When the electrostatic charge potential of the person becomes 500V to 1000V, a slight painful shock occurs at the point of contact. Furthermore, when the electrostatic charge potential of the person becomes 2500V or higher, a painful shock occurs even when a finger comes into contact with the person.

[0031] It is recommended that there are no conductive objects such as metal plates on the ground in the shower space, and it is even more desirable to place an electrically insulating plate on the ground in the shower space to prevent the negative charge from escaping from negatively charged objects in the shower space.

[0032] Corona discharge may also generate ozone. For example, to prevent a situation in which high concentrations of ozone remain in a windless environment and the emission of electric charges is noticed due to the smell, the negative charge emission device 11 may be provided with a fan (not shown) for circulating or diffusing ozone. The negative charge emission device 11 may also be provided with any type of replaceable fragrance material.

[0033] The intrusion prevention device 1 further includes a second power supply device 22. The second power supply device 22 is connected to the door frame 61, the door knob 62, the window frame 71, the crescent lock 72, and the like. The second power supply device 22 supplies a positive voltage to the door frame 61, window frame 71, doorknob 62, and crescent lock 72 to maintain a positive potential. The second power supply device 22 maintains, for example, the door frame 61, window frame 71, doorknob 62, and crescent lock 72 at 1 kV or more. Positive is an example of a second polarity. The second power supply device 22 is an example of a charging means for positively charging the door frame 61, window frame 71, doorknob 62, and crescent lock 72. The second power supply device 22 outputs a positive voltage of, for example, 500 V to 2500 V. The second power supply device 22 outputs a positive voltage of, for example, 500 V to 1000 V, thereby delivering a shock that causes a slight pain at the point of contact. The second power supply device 22 is set to output a current of, for example, 1 mA or less. By outputting a current of, for example, 1 mA or less, the second power supply device 22 can deliver a shock without causing any physical injury to the intruder. Furthermore, by having the second power supply unit 22 output a current of, for example, 0.5 mA or less, it is possible to deliver a shock that the intruder finds unpleasant. Furthermore, when shocking an intruder, the output voltage, which drops as the current is output, can be restored in a short time. Therefore, even if an intruder attempts to touch the door frame 60 or window frame 70 multiple times in a short period of time, it is possible to continue delivering shocks. The first power supply unit 12 and the second power supply unit 22 are configured to suppress fluctuations in output voltage even when outputting a current of 0.5 mA or less. This allows for repeated shocks.

[0034] The door frame 61, doorknob 62, window frame 71, and crescent lock 72 are made of metal materials. It is desirable that the door frame 61, doorknob 62, window frame 71, and crescent lock 72 are not electrically grounded. In this case, even if the negative terminal of the second power supply device 22 is installed, current leakage from the door frame 61, doorknob 62, window frame 71, and crescent lock 72 is suppressed. Power consumption is also suppressed.

[0035] The second power supply device 22 may also supply voltage to an object to be protected in the room, such as the safe 110.

[0036] The surveillance camera 30 is installed in a location where an intruder is likely to attempt an intrusion, such as a door 60 or a window 70, and captures images of the target spaces S1, S2, the door 60, and the vicinity of the window 70. The surveillance camera 30 transmits the captured image data to the control device 50 (see FIG. 2).

[0037] FIG. 2 is a block diagram showing a control system of an intrusion prevention device according to an embodiment of the present invention.

[0038] The control device 50 includes a CPU (not shown) that executes various processes and a storage unit (not shown) that stores various data and programs. The control device 50 may be disposed integrally with the negative charge emission device 11, the first power supply device 12, or the second power supply device 22. Alternatively, the control device 50 may be provided independently of any of the negative charge emission device 11, the first power supply device 12, and the second power supply device 22.

[0039] The control device 50 has the functions of an intruder approach detection unit 51, an electronic security control unit 52, a positive charge control unit 53, a negative charge control unit 54, an abnormality detection unit 55, an alarm-related control unit 56, and a communication control unit 57, as the CPU executes various processes based on various programs.

[0040] The control device 50 analyzes the image data captured by the surveillance camera 30 to determine the presence and location of an intruder, and based on the determination result, controls the operation of the negative charging device 10 and the positive charging device 20, notifies security guards, etc. The control device 50 controls the first power supply device 12 and the second power supply device 22 based on the image data captured by the surveillance camera 30. For example, if a plurality of surveillance cameras 30, a plurality of first power supply devices 12, and a plurality of second power supply devices 22 are installed in the building 100, the first power supply device 12 and the second power supply device 22, which are responsible for preventing intrusion through the door 60, are controlled and driven based on the image data captured by the surveillance camera 30 installed near the door 60. The first power supply device 12 and the second power supply device 22, which are responsible for preventing intrusion through the window 70, are controlled and driven based on the image data captured by the surveillance camera 30 installed near the window 70.

[0041] The intruder approach detection unit 51 determines whether or not a person is captured in the photographic data from the surveillance camera 30. When the intruder approach detection unit 51 determines that a person is captured, it corresponds to detecting that an intruder is approaching the protection area (building 100).

[0042] The mechanical security control unit 52 controls the operation of the mechanical security system, including intrusion prevention and intrusion detection. The mechanical security control unit 52 operates the surveillance camera 30, the first power supply device 12, and the second power supply device 22. For example, the mechanical security control unit 52 issues an alarm when an intruder enters the building 100, which is a protected area, based on output data from an intruder detection sensor (not shown) installed in the building 100. The mechanical security control unit 52 performs mechanical security when a security switch 32 installed in the building 100 is operated. For example, when the security switch 32 is operated and mechanical security is implemented, the mechanical security control unit 52 operates the first power supply device 12 and the second power supply device 22. When mechanical security is not implemented, the mechanical security control unit 52 does not operate the first power supply device 12 and the second power supply device 22. However, the operation of the first power supply device 12 and the second power supply device 22 is not limited to this, and the first power supply device 12 and the second power supply device 22 may be operated based on data from the surveillance camera 30 regardless of the operation of the security switch 32. The first power supply device 12 and the second power supply device 22 are not intended to neutralize an intruder, i.e., to apply a charge of the opposite polarity to that of the target. Therefore, the electronic security control unit 52 causes the first power supply device 12 and the second power supply device 22 to output a voltage of a predetermined polarity without determining the polarity of the intruder's charge.

[0043] The positive charge control unit 53 activates the second power supply device 22 when the intruder approach detection unit 51 determines that a person is captured in the image data from the monitoring camera 30.

[0044] The negative charge control unit 54 activates the first power supply device 12 when the intruder approach detection unit 51 determines that a person is captured in the image data from the surveillance camera 30. When the first power supply device 12 is activated, the negative charge emission device 11 is activated and generates negative ions. This allows the negative ions to attach to the intruder when the intruder is in the target space S1 or S2, thereby negatively charging the intruder. Both the first power supply device 12 and the second power supply device 22 can output a specified voltage within a short time after activation. That is, the first power supply device 12 and the second power supply device 22 can be started up in a short time. For example, the output voltage of the first power supply device 12 and the second power supply device 22 reaches the specified voltage within a few seconds after activation. Intruders often attempt to enter through the door 60 or window 70 within a short period of time. The intrusion prevention device 1 is ready to administer a shock immediately after detecting an intruder. Furthermore, even if the voltage drops due to the application of a shock, the first power supply device 12 and the second power supply device 22 can restore their output voltage within a short time.

[0045] The abnormality detection unit 55 detects various abnormalities in the intrusion prevention device 1. For example, if the surveillance camera 30 does not work, such as if it has broken down or been destroyed, it is determined to be an abnormality. The abnormality detection unit 55 determining an abnormality corresponds to detecting various abnormalities. Note that the abnormality detection unit 55 may also detect abnormalities in security devices other than the intrusion prevention device 1.

[0046] The alarm-related control section 56 controls the activation of the alarm 80 when the abnormality detection section 55 detects any type of abnormality.

[0047] When the abnormality detection unit 55 detects any abnormality, the communication control unit 57 controls the transmission of information about the occurrence of the abnormality via the network to the security company terminal 120. In addition, the communication control unit 57 may transmit image data captured by the surveillance camera 30 to the security company terminal 120, or may transmit information acquired by a security device other than the intrusion prevention device 1.

[0048] Next, the operation of the intrusion prevention device 1 will be described.

[0049] When an intruder attempts to break into the building 100, he or she approaches the door 60 or the window 70. When the building 100 is in a secured state, the door 60 is basically kept closed by the locking function of the doorknob 62, and the window 70 is kept closed by the crescent lock 72. In addition, mechanical security is in operation. The intruder approaches the door 60 or the window 70 with a demolition tool (e.g., a crowbar or a lock pick) in order to, for example, break the doorknob 62 or the vicinity of the crescent lock 72, or to remove the door 60 or the window 70 from the door frame 61 or the window frame 71.

[0050] When an intruder approaches the door 60 or window 70 and is photographed by the surveillance camera 30, the negative charge emitter 11 is activated to spray negative ions into the shower space. Also, the positive charge generator 21 is activated to apply a positive voltage to the door handle 62 or window frame 71.

[0051] When an intruder is within reach of the door 60 or window 70, negative ions attach to the intruder or a tool (e.g., a crowbar) that the intruder is holding. This causes the intruder or a metal tool that the intruder is holding to become negatively charged. For example, the intruder or the tool becomes charged in the range of -1000V to -500V.

[0052] When a negatively charged intruder or a metal tool carried by the intruder touches the door frame 61, doorknob 62, window frame 71, crescent lock 72, etc., and comes into contact with or close to a part of the door 60 or window 70, the negative charge accumulated on the intruder or the tool flows to the door frame 61, doorknob 62, window frame 71, and crescent lock 72. More specifically, a current flows due to the negative charge accumulated on the intruder or the tool, and a current flows due to the positive voltage applied to the door frame 61, doorknob 62, window frame 71, and crescent lock 72. This gives the intruder an electric shock. For example, an electric shock is given to an intruder by momentarily passing a current of 0.5 mA or less through the body of the intruder. If the current passing is, for example, 0.5 mA or less, the intruder will be shocked but will not be injured.

[0053] An intruder who receives an electric shock is likely to hesitate to attempt to break into the door 60 or window 70. The intruder may immediately stop the attempt, think of a way to avoid receiving an electric shock, or look for another way to break in. As a result, it will at least lengthen the time it takes to break in. For example, it will increase the chances that security guards or police officers will arrive before the intruder has left the building 100. By lengthening the time it takes to break in, the intruder is likely to give up on the attempt. In this way, it is possible to administer an electric shock to the intruder before he or she breaks down the door 60 or window 70, thereby reducing the intruder's motivation to attempt to break in.

[0054] For example, even if an intruder destroys the glass plate 70a by touching only the glass plate 70a without touching the door frame 61, doorknob 62, window frame 71, or crescent lock 72, the intruder remains negatively charged. Therefore, when an intruder enters the building 100 and touches the door frame 61, doorknob 62, window frame 71, crescent lock 72, etc., the intruder receives an electric shock.

[0055] Incidentally, the conditions for preventing intrusion into the protected area are, for example, that the door 60 or window 70 is locked and that a mechanical security system that detects and notifies intrusion into the protected area is operating effectively. However, the conditions for the intrusion prevention device to operate are not limited to this, and for example, the condition may simply be that the door 60 or window 70 is locked. Furthermore, the conditions for the intrusion prevention device to operate are not limited to this, and for example, the condition may be that the intrusion prevention device 1 itself is operating even if the door is not locked or there is no mechanical security system.

[0056] [Action and effect] According to this embodiment configured as described above, the following advantageous effects are achieved.

[0057] According to this embodiment, the negative charge emission device 11, supplied with voltage from the first power supply device 12, emits negative charges (negative ions) toward the target spaces S1 and S2. As a result, an intruder in the target spaces S1 and S2 and a metal demolition tool (e.g., a crowbar) held by the intruder become negatively charged. That is, negative charges accumulate on the intruder and the demolition tool. When the intruder touches or approaches a portion of the door 60 or window 70, the negatively accumulated charges instantaneously move between the portion of the door 60 or window 70 and the intruder due to a discharge phenomenon. That is, when the intruder touches or approaches the door 60 or window 70, or when the metal demolition tool (e.g., a crowbar) held by the intruder touches or approaches the door 60 or window 70, a discharge phenomenon occurs, and the intruder is given an electric shock. This allows the intruder to be given an electric shock before breaking the door 60 or window 70, thereby reducing the intruder's motivation to attempt an intrusion.

[0058] In the above embodiment, a combination of the first power supply device 12 and the second power supply device 22 has been described. However, the present invention is not limited to the above configuration. For example, the second power supply device 22 that applies a positive voltage to the door frame 61, the doorknob 62, the inner frame 70b, the window frame 71, the crescent lock 72, etc. may not be provided. In this case, an electric shock occurs only due to charging of the intruder or their tools by the first power supply device 12 and the negative charge emission device 11. In this case, installation is easier than wiring to a specific location on the door 60 or window 70. Furthermore, it is possible to prevent the door 60 or window 70 from being disfigured or easily discovered by an intruder who is interested in the door 60 or window 70.

[0059] However, when a second power supply unit 22 is provided to apply a positive voltage to the door frame 61, doorknob 62, inner frame 70b, window frame 71, crescent lock 72, etc., as in this embodiment, an electric shock can be given more reliably even in a situation where the charge emitted from the negative charge emission device 11 is likely to escape from the intruder to the ground, such as when the intruder is wearing conductive footwear.

[0060] Furthermore, according to this embodiment, when the intruder approach detection unit 51 detects the approach of an intruder, it activates the first power supply device 12, so that when the intrusion of an intruder is confirmed, the first power supply device 12 can be activated to charge the intruder.

[0061] Furthermore, embodiments of the present invention are not limited to those described above. For example, while the above-described embodiment negatively charges the intruder and positively charges the door 60 or window 70, the intruder may be positively charged and the door 60 or window 70 may be negatively charged. Specifically, if the door 60, door frame 61, and doorknob 62 are made of materials that are easily negatively charged, the door 60, door frame 61, and doorknob 62 may be negatively charged, and positive ions may be sprinkled into the shower space near the door 60, thereby positively charging the intruder.

[0062] Furthermore, in the above-described embodiment, the detection of the approach of an intruder is performed based on the image data captured by the surveillance camera 30, but this is not limiting and other detection sensors may be used. For example, an infrared sensor or a thermosensor may be used, or these may be used in combination.

[0063] 1, one negative charge emission device 11 is provided for each door 60 or window 70. However, for example, multiple negative charge emission devices 11 may be installed on one door 60 to expand the shower space into which negative ions are sprayed. This makes it possible, for example, for multiple intruders to be negatively charged when they approach the door 60. In this case, the control device 50 may determine the number and locations of intruders based on the image data captured by the surveillance camera 30, and select the negative charge emission device 11 to be driven based on the determination result.

[0064] In the above-described embodiment, the shower space of the negative charge emission device 11 is larger than the target spaces S1 and S2 within reach of the door 60 or window 70, but the shower space and the target spaces S1 and S2 may be the same, and the size of the shower space into which negative ions can be sprayed by the negative charge emission device 11 is not particularly limited.

[0065] Furthermore, when the control device 50 controls the operation, it may recognize a person photographed by the surveillance camera 30 using a face recognition function, and if the person can be matched with a database of relevant persons, it may stop the operation of the negative charging device 10 and the positive charging device 20. This allows the negative charging device 10 and the positive charging device 20 to be operated, for example, when a patrol security guard is patrolling.

[0066] Furthermore, the portion to which second power supply device 22 applies voltage may be differentiated depending on the material. For example, if door frame 61 is made of conductive metal and is grounded, voltage may not be supplied from positive charge generator 21 to door frame 61, and if door frame 61 is made of conductive metal but is surrounded by an insulating material and is not grounded, voltage may be supplied from positive charge generator 21. [Explanation of symbols]

[0067] 1 Intrusion prevention device 10 Negative charging device 11 Negative charge radiation device 12 1st power supply 20 Positive charging device 21 Positive charge generator 22 Second power supply 30 Surveillance Camera 50 Control device 51 Intruder approach detection unit 52 Mechanical security control unit 53 Positive charging control section 54 Negative charge control section 55 Abnormality detection unit 56 Alarm-related control section 57 Communication control section 60 doors 61 Door Frame 62 Doorknob 70 Windows 70a Plate Glass 70b inner frame 70c operation unit 71 Window Frame 72 Crescent Tablets 80 alarm 100 buildings 101 Eaves 102 Wall

Claims

1. an electric charge emission device that emits electric charges of a first polarity toward a target space that is a space outside a door or a window provided in a wall that separates a protection area that requires protection against intrusion from the outside of the protection area, the target space being within a range where the door or the window can be reached, so as to charge objects in the target space; a first power supply unit that supplies a voltage to the charge emission device that allows the charge emission device to emit electric charges; an approach detection means for detecting an intruder's approach to the door or the window; and control means for activating the first power supply device when the approach detection means detects the approach of an intruder.

2. 2. The intrusion prevention device according to claim 1, further comprising a second power supply device that applies a voltage of a second polarity opposite to the first polarity to a frame member of the door or the window, an opening / closing operation member of the door or the window, or a combination thereof.

3. the door or the window can be freely opened or closed, and the door or the window can be kept closed by being locked with a locking means; 3. The intrusion prevention device according to claim 1, further comprising charging means for charging the door or window frame and the locking means to a second polarity opposite to the first polarity.

4. The intrusion prevention device according to any one of claims 1 to 3, characterized in that the electric charge emission device is arranged in a space outside the door or the window and comprises an ion generating means for spraying negative ions at an intruder in the target space.

Images