Leakage current induction conduit and electric shock prevention device including the same

Abstract

The present invention relates to a leakage current induction conduit and an electric shock prevention device including the same, which can prevent electric shock accidents caused by leakage current by preventing leakage current from flowing to the outside when leakage current is generated in electrical equipment or electrical equipment due to flooding, and can also reliably prevent electric shock accidents by automatically recovering the leakage current when it is generated, as well as improving the efficiency of management.According to the present invention, a leakage current induction conduit is provided, characterized in that it includes a first leakage current induction pipe section formed in a tubular body of an insulating material, a first leakage current derivative section provided in the first leakage current induction pipe section and configured to transmit the leakage current to the second leakage current derivative section when a leakage current is generated, a second leakage current induction pipe section provided at one end of the first leakage current induction pipe section and formed in a tubular body of an insulating material, and a second leakage current derivative section provided in the second leakage current induction pipe section and configured to be connected to the first leakage current derivative section.

Description

Technical Field

[0001] The present invention relates to a leakage current induction wire pipe and an electric shock prevention device including the same. More specifically, when leakage current occurs due to water immersion or the like in electrical equipment and electrical installations including ground electrical installations such as street lights, electric motors, transformers, and traffic signal lights, it is prevented from flowing outside and an electric shock accident due to the leakage current is prevented. Furthermore, when the leakage current occurs, it can be automatically recovered to the power supply side, so that not only can an electric shock accident be surely prevented, but also the management efficiency can be improved. The present invention relates to a leakage current induction wire pipe and an electric shock prevention device including the same.

Background Art

[0002] Electric shock is a phenomenon in which a human body reacts when the leakage current flowing from a power source through the human body to the ground as a grounding surface reaches a certain value or more.

[0003] Generally, when a leakage current of 15 mA or more flows, convulsions occur, and when 50 mA or more flows, death results. The main cause of death is cardiac arrest in which the current flowing through the heart damages the nerves and causes the heart to stop functioning.

[0004] The risk of electric shock is related to the resistance of the human body at the time of energization, which is greatly influenced by the condition of the skin.

[0005] When electrical equipment, such as electrical outlets, electric heaters, or electric lights, is immersed in water, if a human body touches the water or the metal housing that is energized through the water, current flows from the exposed conductor of the electrical equipment through the water and the human body to the ground as the grounding surface.

[0006] At this time, the human body's skin is wet with water, and in that case, the contact resistance is extremely low, so it is in a very dangerous state.

[0007] A short circuit between power lines is a problem in which when the insulation between two lines becomes low and the electrical conductivity becomes high, a rapid current flows, causing damage to equipment such as fires and short circuits in electrical equipment.

[0008] Generally, air has a very high degree of insulation, and it maintains electrical insulation between two wires by acting as a medium.

[0009] However, if a highly electrically conductive fluid fills the space between the two wires due to flooding or other reasons, the current between the phases increases rapidly, causing a short circuit.

[0010] Korean Published Patent No. 2005-0037986 discloses a water-immersion electric shock prevention device in which a metal plate or metal mesh made of a metallic material is attached to a bare live part, and when submerged in water, the current leaking from the bare live part is passed through the conductive metal plate or metal mesh to prevent electric shock accidents.

[0011] The metal plate or metal mesh is connected by wires to the neutral and ground terminals of the terminal block, and the metal plate measures approximately 50 cm x 30 cm.

[0012] Although the conventional technology described above does not explain its principle in detail, it appears that when submerged in water, a metal plate is placed between the submerged conductor in a state where the resistance is much lower than the resistance through which water and the human body pass, thereby electrically connecting it in parallel with the human body and limiting the current flowing through the human body.

[0013] However, such metal plates or metal meshes cannot shield the electric field generated radially at the bare live parts and cannot effectively block leakage current, which presents a problem of spatial constraints on installation.

[0014] Taking streetlights as an example, a streetlight is constructed with a pole support that is installed above ground level by a flange formed at the lower end of the pole support. The upper end of the pole support is connected to the lower part of an arm support, which has a shape that gradually narrows in width towards the top, by a connecting member with a different tapered shape. At this time, a light fixture arm, to which a light fixture is attached, is connected to the upper end of the arm support.

[0015] These streetlights are equipped with power lines and various electrical facilities, such as transformers, to power the light fixtures inside.

[0016] However, these electrical facilities can short-circuit during floods and be carried away by rainwater, resulting in electric shocks if people come into contact with or are near the streetlights. [Prior art documents] [Patent Documents]

[0017] [Patent Document 1] Korean Published Patent Publication No. 2005-0037986 [Overview of the project] [Problems that the invention aims to solve]

[0018] Therefore, the present invention aims to solve the above-mentioned conventional problems by providing a leakage current induction conduit and an electric shock prevention device including the same that can reliably prevent leakage current from flowing to the outside due to flooding or other reasons in electrical equipment and electrical fixtures, including ground-level electrical installations such as streetlights, electric motors, transformers, and traffic signal lights, thereby preventing electric shock accidents caused by leakage current.

[0019] Furthermore, another objective of the present invention is to provide a leakage current induction conduit and an electric shock prevention device including the same, which can not only reliably prevent electric shock accidents by enabling the automatic detection and recovery of leakage current, but also improve the efficiency of management.

[0020] The problems that this invention aims to solve are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. [Means for solving the problem]

[0021] According to one aspect of the present invention for achieving the above object and other features of the present invention, in an electric wire conduit through which an electric wire passes, a first leakage current induction conduit portion formed in a tubular body of an insulating material, a first leakage current induction conductor portion provided in the first leakage current induction conduit portion and configured to transmit a leakage current to the following second leakage current induction conductor portion when the leakage current occurs, a second leakage current induction conduit portion provided at one end of the first leakage current induction conduit portion and formed in a tubular body of an insulating material, and a second leakage current induction conductor portion provided in the second leakage current induction conduit portion and connected to the first leakage current induction conductor portion, a leakage current induction electric wire conduit is provided, characterized by including these components.

[0022] According to another aspect of the present invention, there is provided an electric shock prevention device for preventing electric shock caused by a leakage current of an electric wire that supplies power to an object to be powered. The electric shock prevention device includes a leakage current induction electric wire conduit according to the above-described one aspect, a leakage current automatic recovery module configured to automatically induce a leakage current transmitted from the leakage current induction electric wire conduit to the neutral wire of the electric wire, and a leakage prevention unit that connects the neutral wire of the electric wire and the object to be powered and prevents electric leakage during flooding.

Advantages of the Invention

[0023] The leakage current induction electric wire conduit according to the present invention and the electric shock prevention device including the same provide the following effects.

[0024] First, the present invention can reliably prevent leakage current from flowing outside due to flooding or the like in electrical equipment and electrical installations, prevent electric shock accidents caused by leakage current, and prevent human life damage.

[0025] Second, even if the insulation of the electric wire protection and the electric wire in use is damaged and a leakage current occurs, the present invention has the effect of shielding the leakage current so that the leakage current is not released to the outside.

[0026] Third, when a leakage current occurs, the present invention can automatically recover it and improve the efficiency of management.

[0027] Fourth, the present invention has the effect of being applicable to a wide variety of electrical equipment and devices such as streetlights, electric motors, transformers, and traffic signal lights, and is highly versatile.

[0028] The effects of the present invention are not limited to those mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description. [Brief explanation of the drawing]

[0029] [Figure 1] This figure shows a leakage current induction conduit according to the present invention. [Figure 2] This diagram shows the components of a leakage current induction conduit according to the present invention, separated into parts. [Figure 3] This figure shows the leakage current shielding pipe section included in the leakage current induction conduit according to the present invention, where (A) is a cross-sectional view and (B) is a longitudinal cross-sectional view. [Figure 4] This diagram shows the configuration of the leakage current induction conduit and the leakage current automatic recovery module included in the electric shock prevention device according to the present invention. [Figure 5] This figure shows an example of an automatic leakage current recovery module included in an electric shock prevention device according to the present invention. [Figure 6] This diagram shows some of the components constituting the electric shock prevention device according to the present invention, separated from each other. [Figure 7] This is a diagram showing a disassembled version of the leakage prevention unit according to the present invention. [Figure 8] This figure shows the application part included in the leakage current prevention unit of the electric shock prevention device according to the present invention. [Figure 9] This figure shows the applied connection portion included in the leakage current prevention unit of the electric shock prevention device according to the present invention. [Figure 10] This figure shows the applied current notification unit included in the leakage current prevention unit of the electric shock prevention device according to the present invention. [Figure 11] This figure shows the electric shock prevention section included in the leakage prevention unit of the electric shock prevention device according to the present invention. [Modes for carrying out the invention]

[0030] Additional objectives, features, and advantages of the present invention can be better understood from the following detailed description and accompanying drawings.

[0031] Prior to a detailed description of the present invention, it should be understood that the present invention can be modified in various ways and have many different embodiments, but the examples described below and shown in the drawings are not intended to limit the present invention to any particular embodiment, and include all modifications, equivalents or substitutions that fall within the spirit and technical scope of the present invention.

[0032] Furthermore, when explaining with reference to the attached drawings, identical components will be given the same reference numerals regardless of the reference numerals in the drawings, and redundant explanations related thereto will be omitted. When explaining the present invention, if it is determined that a specific explanation of such known technology may unnecessarily obscure the gist of the present invention, such detailed explanation will be omitted.

[0033] Hereinafter, a preferred embodiment of the present invention, including a leakage current induction conduit and an electric shock prevention device, will be described in detail with reference to the attached drawings.

[0034] First, the leakage current induction conduit according to the present invention will be described in detail with reference to Figures 1 to 3.

[0035] Figure 1 shows a leakage current induction conduit according to the present invention, Figure 2 shows the components of the leakage current induction conduit according to the present invention separated, and Figure 3 shows the leakage current shielding pipe section included in the leakage current induction conduit according to the present invention, where (A) is a cross-sectional view and (B) is a longitudinal cross-sectional view.

[0036] The leakage current induction conduit according to the present invention is a conduit through which wires for supplying power to electrical equipment and electrical fixtures are guided, and as shown in Figures 1 to 3, it broadly includes a first leakage current induction section 110, a first leakage current diverter section 120, a second leakage current induction section 130, and a second leakage current diverter section 140. For example, if the electrical fixture is a streetlamp, the wires for supplying power to the streetlamp are connected underground, passing through the leakage current induction conduit.

[0037] Specifically, the leakage current induction conduit according to the present invention is a conduit through which wires for supplying power to electrical equipment and electrical fixtures are guided, and as shown in Figures 1 to 3, it includes: a first leakage current induction conduit section 110 formed of an insulating material with wires guided inside; a first leakage current derivative section 120 provided inside the first leakage current induction conduit section 110 and configured to transmit leakage current to a second leakage current derivative section 140 provided in the second leakage current induction conduit section 130 when leakage current occurs; a second leakage current induction conduit section 130 formed of an insulating material and provided at one end of the first leakage current induction conduit section 110; and a second leakage current derivative section 140 provided in the second leakage current induction conduit section 130 and configured to be electrically conductively connected to the first leakage current derivative section 120.

[0038] The first leakage current induction tube section 110 is a tubular body made of an insulating material through which the electric wire is guided.

[0039] Specifically, the first leakage current induction tube section 110 is formed of a resin material such as plastic, and the insulating material used to form it is not limited to this. Preferably, as will be explained below, considering that the first leakage current derive section 120 is provided in the first leakage current induction tube section 110, it is preferable to form it of a resin material, taking into account moldability and manufacturability (e.g., extrusion).

[0040] Furthermore, when extending the length of the first leakage current induction tube section 110, two or more sections can be connected together. In this case, the first leakage current diverter sections 120 formed on adjacent first leakage current induction tube sections 110 can be connected via electrically connectable connectors.

[0041] Next, the first leakage current conductor section 120 is provided inside the first leakage current induction tube section 110 and is configured to transmit the leakage current to the second leakage current induction tube section 130 when a leakage current occurs.

[0042] Specifically, the first leakage current diverter section 120 is composed of a conductor formed on the inner wall (inner surface) of the first leakage current induction tube section 110, and preferably, one or more conductive strips are arranged in a spiral pattern on the inner surface of the first leakage current induction tube section 110.

[0043] Here, it is preferable that the first leakage current induction tube section 110 is formed in a spiral groove on its inner surface, and the first leakage current diverter section 120 is provided in the spiral groove.

[0044] The first leakage current derivative portion 120 may be formed by fusing a conductive component that can be compounded with resin, such as graphene or graphite, into a helical groove. Preferably, the first leakage current derivative portion 120 is formed to have an electrical conductivity of 200 ohms (Ω) or less.

[0045] Furthermore, when the first leakage current diverter section 120 is provided in the spiral groove of the first leakage current induction tube section 110, the upper surface of the first leakage current diverter section 120 (or the height of the first leakage current diverter section 120) is provided such that the deviation (D) from the upper surface of the spiral groove is at least 1 mm. This tolerance is formed to prevent short circuits and voltage withstand failures in the event of damage to the wire insulation.

[0046] In the drawing, the spiral grooves formed in the first leakage current induction tube section 110 so as to accommodate the first leakage current induced section 120 are shown to be formed in a manner that involves four grooves spaced at 90° intervals.

[0047] Thus, when the first leakage current induced section 120 is formed of two or more (four in the drawing), even if a part of it is damaged, the leakage current induced section remains constantly connected to the second leakage current induced section 140 of the second leakage current induction tube section 130. Therefore, no matter where in the electric wire the dielectric breakdown occurs and a leakage current is generated inside the first leakage current induction tube section 110, it is shielded and becomes possible to transmit the current to the neutral wire (the leakage current transmission section of the second leakage current induced section 140).

[0048] Furthermore, the spiral groove formed in the first leakage current induction tube section 110 may be formed in the shape of a semicircle as shown in the drawing, but is not limited to this, and can be formed in a variety of shapes or forms.

[0049] Next, the second leakage current induction tube section 130 is made of an insulating material and is formed as a tubular body provided at one end of the first leakage current induction tube section 110.

[0050] The second leakage current induction tube section 130 is configured to be detachably connected to the first leakage current induction tube section 110, but the connecting end of the second leakage current induction tube section 130 (the end that is connected to the first leakage current induction tube section 110) is formed with a size and shape that allows it to be connected to the inside of the first leakage current induction tube section 110.

[0051] Furthermore, an insulating rubber layer is formed on the inner surface of the second leakage current induction tube section 130, providing internal insulation. A hexagonal nut can be formed in the center of the outer surface of the second leakage current induction tube section 130. This is to facilitate fixing and releasing the connection to the object when the upper derive section 142 of the second leakage current derive section 140, described below, is provided in a threaded form.

[0052] Next, the second leakage current deriving section 140 is provided in the second leakage current induction tube section 130 and is configured to be electrically conductively connected to the first leakage current deriving section 120.

[0053] Specifically, the second leakage current derivative section 140 includes a lower derivative section 141 formed on the lower outer surface and electrically connected to the first leakage current derivative section 130, and an upper derivative section 142 formed on the upper outer surface of the second leakage current induction tube section 130 and electrically connected to the lower derivative section 140.

[0054] The lower derive portion 141 is formed in the same helical shape as the helical groove pattern formed on the inner wall (inner surface) of the first leakage current induction tube portion 110. When the second leakage current induction tube portion 130 is coupled to the inside of the first leakage current induction tube portion 110, the lower derive portion 141 of the second leakage current derive portion 140 comes into close contact with the first leakage current derive portion 120, enabling electrical connection.

[0055] Here, the lower derive portion 141 can be formed in a threaded shape, but in this case, the inner surface of the first leakage current induction tube portion 110 may be thread-tapped and electrically connected to the first leakage current derive portion 120 while being thread-coupled to it.

[0056] The upper derivative portion 142 may be formed in the shape of a screw thread. This may be so that leakage current is induced while it is easily connected to the object to be connected via a nut, as mentioned earlier.

[0057] Furthermore, a hexagonal nut can be formed in the center of the outer surface of the second leakage current induction tube section 130. In this case, the proximal end portion of the hexagonal nut, that is, the inner edge side of the hexagonal nut, has a through hole, and the lower derive section 141 and the upper derive section 142 are connected through this through hole.

[0058] As described above, when the second leakage current induced section 140 is coupled with the first leakage current induction tube section 110, the lower induced section 141 of the second leakage current induced section 130 is in close contact with the first leakage current induced section 130, so that the leakage current generated in the first leakage current induction tube section 110 is transmitted to the neutral wire (the leakage current transmission section of the second leakage current induced section 140) via the second leakage current induction tube section 130.

[0059] On the other hand, an automatic leakage current recovery module 200 is configured to be connected to the leakage current induction conduit according to the present invention described above, and to automatically cause the leakage current transmitted from the leakage current induction conduit 100 to flow to the neutral wire of the electric wire. Such an automatic leakage current recovery module 200 is included in the electric shock prevention device according to the present invention.

[0060] The leakage current automatic recovery module 200 will be described in detail with reference to Figures 4 and 5.

[0061] Figure 4 shows the configuration of the leakage current induction conduit and leakage current automatic recovery module included in the electric shock prevention device according to the present invention, and Figure 5 shows an example of the leakage current automatic recovery module included in the electric shock prevention device according to the present invention.

[0062] As shown in Figures 4 and 5, the automatic leakage current recovery module 200 is a component configured to automatically channel the leakage current transmitted from the leakage current induction conduit 100 to the neutral wire of the electric wire.

[0063] In other words, the automatic leakage current recovery module 200 is a component configured to recover leakage current automatically, and is configured to automatically switch so that the neutral line (N) is connected to the leakage current shielding device, regardless of the direction in which the hot line (L) and the neutral line (N) are connected to the service entrance.

[0064] As shown in Figure 5, the leakage current automatic recovery module 200 broadly includes a draw-in section 210, a constant voltage section 220, a NAND gate section 230, an AND gate section 240, an electronic switch section 250, and a display section 260.

[0065] The inlet section 210 is a component to which the hot line (L) and the neutral line (N), which are applied from the outside, are connected.

[0066] The constant voltage section 220 consists of a hot line (L) and a neutral line (N), each connected to the ground (G) side by a Zener diode (ZD) to output a predetermined voltage, and a capacitor (C) responsible for maintaining that predetermined voltage.

[0067] The NAND gate unit 230 outputs a logical value "L (Low)" to output 4 if both the first input 1 and the second input 2 from the hotline (L) are "H (High)", and outputs a logical value "H" to output 4 if both the first input 1 and the second input 2 from the hotline (L) are "L".

[0068] The AND gate unit 240 outputs a logical value "H" to output 4 if both the first input 1 and the second input 2 from the hotline (L) are "H", and outputs a logical value "L" to output 4 if both the first input 1 and the second input 2 from the hotline (L) are "L".

[0069] The electronic switch unit 250 is configured such that if the output of the NAND gate unit 230 is "L" and the output of the AND gate unit 240 is "H", output 6 is connected to terminal 5, and if the output of the NAND gate unit 230 is "H" and the output of the AND gate unit 240 is "L", output 6 is connected to terminal 8.

[0070] The leakage current automatic recovery module 200 may further include a display unit 260, which may be configured such that when the upper side is connected to a hotline (L), the upper LED 261 lights up, and when the lower side is connected to a hotline (L), the lower LED 262 lights up.

[0071] The following example illustrates a configuration where the first terminal TH21 of the service entrance 210 is connected to the hotline (L), and the second terminal TH22 is connected to the neutral line (N).

[0072] Since the first terminal TH21 of the incoming section 210 is connected to the hotline (L), "H" is input to the first and second inputs 1 and 2 of the NAND gate section 230, and the NAND gate section 230 outputs "L". Then, "H" is input to the first and second inputs 1 and 2 of the AND gate section 240, and the AND gate section 240 outputs "H". At this time, the electronic switch section 250 connects output 6 to terminal 5 because the output of the NAND gate section 230 is "L" and the output of the AND gate section 240 is "H".

[0073] As a result, the neutral line (N) connected to the second terminal TH22 of the service entrance 210 is connected to the leakage current induction conduit 100. In other words, the leakage current generated in the leakage current induction conduit 100 flows to the neutral line (N) on the power supply side.

[0074] Here, the FG terminal in the leakage current induction conduit 100 is a terminal that is grounded to the earth, and the FC terminal in the drawing is a terminal that is connected to, for example, the outer casing of electrical equipment (street lamppost). The presence of the FC terminal ensures that when a street lamppost is submerged in water, even if a passerby touches the street lamppost, no leakage current will flow into the passerby's body.

[0075] On the other hand, the electric shock prevention device according to the present invention, which includes the above-mentioned leakage current induction conduit 100 and leakage current automatic recovery module 200, and includes a leakage current prevention unit 300, will be described in detail with reference to Figures 6 to 11.

[0076] Figure 6 is a diagram showing some of the components constituting the electric shock prevention device according to the present invention separated, Figure 7 is a diagram showing the leakage current prevention unit according to the present invention disassembled, Figure 8 is a diagram showing the application part included in the leakage current prevention unit of the electric shock prevention device according to the present invention, Figure 9 is a diagram showing the application connection part included in the leakage current prevention unit of the electric shock prevention device according to the present invention, Figure 10 is a diagram showing the application notification part included in the leakage current prevention unit of the electric shock prevention device according to the present invention, and Figure 11 is a diagram showing the electric shock prevention part included in the leakage current prevention unit of the electric shock prevention device according to the present invention.

[0077] The electric shock prevention device according to the present invention includes a leakage current induction conduit 100, an automatic leakage current recovery module 200 configured to automatically flow the leakage current transmitted from the leakage current induction conduit 100 to the neutral wire of a power line (power supply line), and a leakage prevention unit 300 that connects the neutral wire of the power line to the object to which power is supplied and prevents leakage in the event of flooding.

[0078] Since the leakage current induction conduit 100 and the leakage current automatic recovery module 200 have already been explained, a detailed explanation of them will be omitted, and the leakage current prevention unit 300 will be explained.

[0079] The leakage prevention unit 300 includes a housing 310, an application unit 320 built into the housing 310 that electrically connects the electric wire and the object to be powered (a lamp in the case of a streetlamp), a recovery unit 330 attached to the application unit 320 and connected to the neutral wire of the electric wire via the application unit 320 to recover leakage current, and an electric shock prevention unit 340 built into the housing 310, arranged to surround the application unit 320 and connected to the recovery unit 330, which guides the current discharged from the application unit 320 to the recovery unit 330 in the event of flooding to prevent electric shock.

[0080] The housing portion 310 may include, for example, a lower housing portion 311 and an upper housing portion 312 that covers the upper open area of ​​the lower housing portion 311. The lower housing portion 311 can be fixedly installed on the inner wall of the object to which power is supplied.

[0081] The power application unit 320 is mounted on the housing unit 310, and the power supply target is connected to the power application unit 320 via the power application unit 320, enabling the power supply target to operate (light up in the case of a streetlamp).

[0082] As an example, the application unit 320 may be configured to include an application connection unit 321 and an application notification unit 322.

[0083] The application connection section 321 may be configured to be connected to an electric wire to receive power and to supply power to other power-receiving devices.

[0084] The application connection section 321 may include a connection input section 351, a connection coupling section 352, and a connection output section 353.

[0085] The pair of connection input sections 351 are arranged spaced apart on the left and right sides, and the live and neutral wires of the electric wire can be connected to each of them.

[0086] Each connection section 352 has one end connected to the connection input section 351 and is electrically connectable to the application notification section 322 and at least one of the power supply targets. For example, the connection section 352 may include a first connection section 361 extending laterally from the connection input section 351 and connected to the application notification section 322, and a second connection section 362 extending from the first connection section 361, passing through the application notification section 322, and connected to the upper dielectric 142 of the leakage current induction conduit 100.

[0087] The pair of connection output units 353 can be connected to at least one of the connection input units 351 and the connection coupling unit 352. For example, the connection output units 353 may be connected to each of the connection input units 351 and positioned below the connection input units 351. The connection output units 353 can be connected to the output units of electric wires.

[0088] On the other hand, the connection input section 351 and the connection output section 353 may each be covered by a connection cover section 354. The connection cover section 354 includes an insulating material and can protect the exposed wires that are connected to the connection input section 351 and the connection output section 353, and can guide leakage current towards the electric shock prevention section 340.

[0089] Next, the application notification unit 322 can indicate whether the retrieval unit 330 and the electric wire are properly installed. For example, if an operator properly connects the retrieval unit 330 to the application notification unit 322 and properly connects the electric wire to the application notification unit 322, the application notification unit 322 can indicate that the installation is properly completed by sound or by lighting up.

[0090] The application notification unit 322 may include a case unit 371, a notification board unit 372, and a notification illumination unit 373.

[0091] The case portion 371 can be attached to the housing portion 310. The case portion 371 may include a lower case and an upper case that covers the upper open area of ​​the lower case.

[0092] The notification board section 372 is coupled to the case section 371 and can be connected to the application connection section 321. For example, the notification board section 372 is equipped with a circuit for lighting up during normal operation and can be connected to the second connection section 362. The recovery section 330 can be electrically connected to such a notification board section 372. The notification board section 372 can be connected to the recovery section 330 and the neutral wire of the electric wire by a circuit.

[0093] The notification light unit 373 can light up when the connection between the recovery unit 330 and the electric wire is normal. For example, the notification light unit 373 may be mounted on the notification board unit 372, and a notification switch unit 372a may be additionally provided. In this way, when the recovery unit 330 and the electric wire are electrically connected to the notification board unit 372, the notification light unit 373 can light up even if the position where the live wire and the neutral wire of the electric wire are connected to the connection input unit 351 changes, as long as the recovery unit 330 and the neutral wire remain connected to each other.

[0094] The application notification unit 322 may further include a notification grounding unit 374. The notification grounding unit 374 can connect the notification substrate unit 372 and the grounding wire unit (g). For example, the notification grounding unit 374 may include a first grounding plate unit 375 coupled to the notification substrate unit 372, a second grounding plate unit 376 extending upward from the first grounding plate unit 375 and penetrating the case unit 371, a third grounding plate unit 377 curving downward from the second grounding plate unit 376 and closely adhering to the outside of the case unit 371, and a fourth grounding plate unit 378 extending laterally from the third grounding plate unit 377 and connected to the grounding wire unit (g). The fourth grounding plate unit 378 can be supported by a support projection protruding from the outside of the case unit 371. Such a notification grounding unit 374 can ground the system in situations where it is not possible to recover leakage current through the neutral wire.

[0095] Next, the recovery unit 330 is attached to the application unit 320 and connected to the neutral wire of the electric wire, so that leakage current can be recovered.

[0096] The recovery unit 330 is made of a conductor and can be connected to the neutral wire of the electric wire via the substrate circuit of the application unit 320.

[0097] The four recovery sections 330 are either insert-molded into the case section 371 or penetrate vertically and are electrically connected to the notification board section 372, and the upper and lower ends of the recovery sections 330 can be connected to the electric shock prevention section 340.

[0098] The electric shock prevention unit 340 is built into the housing unit 310, positioned to surround the application unit 320, made of a conductor, and connected to the recovery unit 330. It can prevent electric shock by guiding the leakage current emitted from the application unit 320 to the recovery unit 330 when submerged in water. For example, the housing unit 310 may be made of an insulating material, and the electric shock prevention unit 340 may be designed to recover leakage current that moves to be discharged into the gaps of the housing unit 310.

[0099] The electric shock prevention section 340 may include a side prevention section 341 and an upper prevention section 342.

[0100] The side protection section 341 may be positioned to surround the side of the application section 320. For example, the side protection section 341 can surround the side of the application connection section 321, the application notification section 322, and the leakage current automatic recovery module 200.

[0101] The side protection section 341 can be separated into pairs or one can form a closed curve. The side protection section 341 can be supported on the inner wall of the housing section 310, and the position of the side protection section 341 can be adjusted as needed to change the distance between the side protection section 341 and the application section 320.

[0102] The upper prevention section 342 may be connected to the side prevention section 341 and positioned to surround the upper surface of the application section 320. For example, the upper prevention section 342 may be positioned above the application connection section 321, the application notification section 322, and the leakage current automatic recovery module 200. The upper prevention section 342 may be supported by the side prevention section 341 or by the housing section 310, and the position of the upper prevention section 342 can be adjusted as needed to change the distance between the upper prevention section 342 and the application section 42.

[0103] More specifically, the side protection portion 341 may include a side body portion 391, a side connection portion 392, a side cover portion 393, a side protrusion portion 394, and a side support portion 395.

[0104] The side body portion 391 can cover the side of the application portion 320. For example, the side body portion 391 may include a first side body portion 391-1 that covers the side of the electric wire and the application connection portion 321, and a second side body portion 391-2 that extends from the first side body portion 391-1 and covers the side of the application notification portion 322 and the leakage current automatic recovery module 200.

[0105] The side connection portion 392 can be bent from the front end of the side body portion 391 and connected to the electric wire. For example, the side connection portion 392 may be in close contact with the electric wire or positioned between the housing portion 310 and the electric wire. The side connection portion 392 can cover the front of the application portion 320.

[0106] The side cover portion 393 can bend from the rear end of the side body portion 391 and surround the application portion 320. For example, the side cover portion 393 can cover the rear of the application portion 320. Holes may be formed in the side cover portion 393 to allow electric wires to pass through.

[0107] The side projection 394 extends laterally from the side body portion 391 and can be connected to the application portion 320. For example, the side projection 394 formed at the lower end of the second side body portion 391-2 may be located below the application notification portion 322. The side projection 394 and the application notification portion 322 are connected to the housing portion 310, and the recovery portion 330 provided in the application notification portion 322 can be connected to the side projection 394.

[0108] The side support portion 395 can protrude upward from the side body portion 391 and support the upper prevention portion 342. For example, the side support portion 395 can protrude from the upper ends of the first side body portion 391-1 and the second side body portion 391-2, respectively, and be connected to the upper prevention portion 342.

[0109] As described above, the leakage current induction conduit and electric shock prevention device including the same according to the present invention can reliably prevent leakage current from flowing to the outside due to flooding or other reasons in electrical equipment and electrical devices, thereby preventing electric shock accidents caused by leakage current and preventing loss of life. It also has the advantage of protecting the wires and shielding the leakage current so that it is not released to the outside even if the insulation breakdown of the wires used causes leakage current to occur.

[0110] Furthermore, the present invention has the advantage of being able to automatically recover leakage current when it occurs, thereby improving management efficiency, and is applicable to a wide range of electrical equipment and devices, including streetlights, electric motors, transformers, and traffic signal lights, thus possessing versatility.

[0111] The examples described herein and the accompanying drawings illustrate only a part of the technical idea contained herein. Therefore, it is obvious that the examples disclosed herein are for illustrative purposes only, not to limit the technical idea of ​​the present invention, and thus the scope of the technical idea of ​​the present invention is not limited by such examples. All modifications and specific examples that can be easily inferred by a person skilled in the art within the scope of the technical idea contained in the specification and drawings of the present invention should be interpreted as being within the scope of the rights of the present invention.

Claims

1. In a conduit through which electric wires pass, A first leakage current induction tube section formed in a tubular body of insulating material, A first leakage current derive section is provided in the first leakage current induction tube section and is configured to transmit the leakage current to the second leakage current derive section described below when a leakage current occurs, A second leakage current induction tube section is provided at one end of the first leakage current induction tube section and is formed as a tubular body of an insulating material, The invention is characterized by including a second leakage current derive section provided in the second leakage current induction tube section and connected to the first leakage current derive section. Leakage current induction conduit.

2. The system comprises multiple first leakage current induction tube sections, A connector is provided between adjacent first leakage current induction tube sections, which electrically connects the first leakage current induction tube sections while also connecting the adjacent first leakage current induction tube sections. The leakage current induction conduit according to claim 1.

3. The first leakage current induced part is, It is characterized by being made of a conductor formed on the inner wall of the first leakage current induction tube section. The leakage current induction conduit according to claim 1.

4. The first leakage current induced part is, The first leakage current induction tube section is characterized by comprising a conductive strip formed in a spiral shape along its longitudinal direction. The leakage current induction conduit according to claim 3.

5. The first leakage current induced portion is provided in a helical groove formed on the inner surface of the first leakage current induction tube portion, The upper surface of the first leakage current conductor is characterized by being lower than the height of the helical groove. The leakage current induction conduit according to claim 4.

6. The first leakage current induced portion is characterized by being formed at 90° intervals in the circumferential direction. A leakage current induction conduit according to any one of claims 1 to 5.

7. The second leakage current induction tube section is characterized in that its outer side is inserted and coupled to the inner side of the first leakage current induction tube section. The leakage current induction conduit according to claim 1.

8. The second leakage current induced portion is, A lower derivative portion is formed on the lower outer surface and connected to the first leakage current derivative portion, The invention is characterized by comprising an upper derivative portion formed on the upper outer surface of the second leakage current induction tube portion and connected to the lower derivative portion. A leakage current induction conduit according to claim 1 or 7.

9. The first leakage current induced portion is formed spirally on the inner surface of the first leakage current induction tube portion, The lower derivative portion is characterized by being formed spirally on the outer surface of the second leakage current induction tube portion. The leakage current induction conduit according to claim 8.

10. An electric shock prevention device for preventing electric shock caused by leakage current in power lines supplying power to an object, A leakage current induction conduit according to claim 1, An automatic leakage current recovery module configured to automatically guide the leakage current transmitted from the aforementioned leakage current induction conduit to the neutral wire of the electric wire, It is characterized by including a leakage prevention unit that connects the neutral wire of an electric wire to the object to which power is supplied, and prevents leakage of electricity when submerged in water. Electric shock prevention device.

11. The aforementioned leakage current automatic recovery module is: A hot line and a neutral line, which are supplied from the outside, are connected to a connection point. A constant voltage unit connected to the hot line and neutral line rectifies the current and outputs a predetermined constant voltage, A first logic element outputs a signal of the second logic state if the input from the hotline is a signal of the first logic state, If the input from the hotline is a signal of the first logic state, a second logic element outputs a signal of the first logic state. The system includes an electronic switch that, if the output of the first logic element is a signal of the second logic state and the output of the second logic element is a signal of the first logic state, connects the output to a terminal connected to the neutral line, and if the output of the first logic element is a signal of the first logic state and the output of the second logic element is a signal of the second logic state, connects the output to a terminal connected to the hot line. The output of the electronic switch is connected to the leakage current induction conduit. The electric shock prevention device according to claim 10.

12. The electronic switch unit is provided between the leakage current induction conduit and the indicator unit which illuminates depending on whether or not it is connected to a hotline, and is further characterized by including an indicator unit. The electric shock prevention device according to claim 11.

13. The aforementioned leakage prevention unit is A housing made of an insulator, The housing portion includes an application unit that electrically connects the electric wire and the object to which power is supplied, A recovery unit is attached to the application unit and connected to the neutral wire of the electric wire via the application unit to recover leakage current, The device is characterized by including a conductive electric shock prevention unit, which is built into the housing, arranged to surround the application unit, and connected to the recovery unit, and which guides the current discharged from the application unit to the recovery unit in the event of submersion to prevent electric shock. The electric shock prevention device according to claim 10.

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