Electric fence devices and electric fence systems

Abstract

To provide an electric fence device and an electric fence system that reduce the risk of a person inspecting the electric fence accidentally getting an electric shock. [Solution] An electric fence device 50 is formed from multiple posts 8 arranged to surround a protected area that is protected from pests, multiple wires 3 strung vertically on the outer surfaces of the multiple posts 8 at intervals according to the type of pest to be prevented from invading, insulators 1 that hold each of the wires 3, and an electric shock device 51 that supplies a voltage to electrocute the pests, and at least one wire 3 within the visible range of the human eye is provided with a colored section that is easily noticeable to humans. In an electric fence system with multiple sets of electric fence devices 50, the insulators 1 and wires 3 are the same color, and adjacent electric fence devices 50 are painted in different colors to prevent repairmen from mistaking the electric fence device 50 they are repairing.

Description

[Technical Field]

[0001] This application relates to electric fence devices and electric fence systems. [Background technology]

[0002] Electric fence systems are known for protecting crops planted in farmland and livestock in pastures from pests. Electric fence systems consist of multiple posts erected around a protected area, such as farmland or pasture, with conductive wires (hereafter simply referred to as wires) strung across the posts in multiple rows to form a fence. A high-voltage pulse wave is applied to the wires from an electric shock device. Pests that touch the fence are shocked by the electric shock, preventing them from approaching the fence. This is known to be useful for protecting crops in farmland and livestock in pastures. Wires used in electric fence systems include fencing wire for permanent electric fences (made from plated iron wire, which is as hard as wire and has high strength and conductivity) and stranded wire for simple electric fences (called polywire, which is made by twisting polyethylene and conductive wire together and is soft and easy to handle; it comes in round and ribbon types).

[0003] The electric shock device in conventional electric fence systems generates high-voltage pulse waves of approximately 7,000 V by boosting the voltage of the built-in battery and string, and then applies the generated high-voltage pulse waves to the fence. However, if the battery voltage drops over long periods of use, the interval between the high-voltage pulse waves applied to the wires that make up the electric fence becomes longer, and the fence loses its ability to deter pests. For this reason, the battery built into the electric shock device needs to be replaced regularly with a charged battery to prevent the interval between pulse waves from becoming longer.

[0004] To solve this problem, a technology is known that uses solar panels to charge the batteries of an electric shock device (see, for example, Patent Document 1). The technology described in Patent Document 1 eliminates the need for battery replacement, and the battery charged by the solar panel is used at night when there is no sunlight. Therefore, electric fence devices equipped with solar panels can be placed in places where it is not easy to replace the battery, such as forests. Another known technology is to install an electric fence device on flat land in forests or other areas by attaching insulators to the trunks of standing trees growing in the forest, using the trees as supports, and stringing wires through the attached insulators to form a fence (see, for example, Patent Document 2). An electric fence device formed by attaching insulators to standing trees uses fencing wire as the wire, making this an electric fence. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Publication No. 11-169007 [Patent Document 2] Patent No. 7343888 Summary of the Invention [Problem to be solved by the invention]

[0006] When the electric fence described in Patent Document 1 is installed on a ranch or other area, if a power leak occurs and the electric fence needs to be inspected, there is a risk that the inspector may accidentally touch the wire and be electrocuted. While electric fences are required to be equipped with danger signs, these signs are installed at a specified distance, so there is still a risk of people being electrocuted in areas far from the signs. Furthermore, when the electric fence device described in Patent Document 2 is installed on flat ground in a forest or other area and wires are strung between standing trees and posts to form a fence, dark-colored wire is used to prevent pests from noticing the presence of the wire. However, when dark-colored wire is used in an electric fence device, there is also a risk that inspectors may accidentally touch the wire and be electrocuted. Furthermore, the lack of sunlight in forests is also a factor in the risk of inspectors being electrocuted.

[0007] Furthermore, when installing electric fence systems on flat land in forests, multiple sets of electric fence systems may be installed adjacent to each other depending on the shape of the land and the purpose of the electric fence systems. When multiple sets of electric fence systems are installed adjacent to each other, it can be difficult for an inspector to determine which electric fence system has a fault, such as a short circuit. In other words, even if an inspector attempts to inspect a faulty electric fence system, it is not easy to determine, without being electrocuted, which part of the adjacent fence is experiencing the fault, such as a short circuit, and therefore requires inspection.

[0008] In view of the above-mentioned problems, the present disclosure aims to provide an electric fence device and an electric fence system that reduce the risk of an inspector being electrocuted even when it becomes necessary to inspect the electric fence device. [Means for solving the problem]

[0009] The electric fence device according to the embodiment comprises a plurality of posts arranged to surround a protected area protected from pests, a plurality of wires strung on insulators installed in the axial direction of each of the plurality of posts at intervals according to the type of pest to be prevented from entering, and an electric shock device that supplies a voltage to the wires to electrocute the pests, and at least one of the wires within the visible range when viewed from the human eye is provided with a colored portion that is colored in a color that is easily noticeable to humans even in the dark.

[0010] The electric fence system according to one embodiment is an electric fence system that includes at least one electric fence device placed in an open space that is a protected area, and each electric fence device is equipped with a plurality of posts, including posts made from standing trees growing in the forest, a plurality of insulators attached to the posts and positioned at a height that matches the height of the pests that you want to prevent from entering the protected area, wires that are strung across the insulators, and an electric shock device that is provided for each electric fence device and supplies the wire with a voltage that electrocutes the pests, and at least one level of the wires has a colored section that is colored in a color that is easily noticeable to humans in an area that is visible when viewed from above, and the colored section in each electric fence device is the same color as the color of the insulator, and when there are multiple electric fence devices in the protected area, each electric fence device is a different color. [Effects of the Invention]

[0011] The electric fence device according to the present disclosure can reduce the risk of a person accidentally touching the wire and getting electrocuted. In addition, the electric fence system according to the present disclosure can distinguish between multiple electric fence devices installed in forests and fields for inspection. [Brief explanation of the drawings]

[0012] [Figure 1] (a) is a diagram showing an example of an electric fence device according to an embodiment, (b) is a diagram showing the fence shown in (a) installed in a forest, and (c) is an enlarged diagram showing a portion of the insulators, wires, and standing trees shown in (b). [Figure 2](a) is a diagram showing the open state of the jig for applying paint to the upper half of the wire shown in Figure 1(a), (b) is a diagram showing the closed state of the jig for applying paint to the upper half of the wire shown in Figure 1(a), and (c) is an enlarged view of the part of the jig shown in (b) that clamps the wire. [Figure 3] 3(a) is a diagram showing a state in which a wire is clamped in the jig shown in FIG. 2, and (b) is a diagram showing a state in which the jig shown in (a) is opened. [Figure 4] (a) is a diagram showing the state in which a wire is clamped in the jig shown in Figure 2, (b) is a diagram showing the state in which the jig shown in (a) is open, (c) is a diagram of the wire in the state shown in (b) with paint applied to the upper half of the wire, and (d) is a partial view of the wire shown in (c). [Figure 5] 1 is a diagram of a forest field where a fence according to the present invention is installed. [Figure 6] (a) is a diagram showing a state in which a wire is clamped in a jig according to a first modified example in which paint is applied to the upper half of the wire, and paint is applied to the wire clamped in the jig with the jig closed; (b) is an enlarged view of the part of the jig shown in (a) that clamps the wire; (c) is a partial enlarged view of the area indicated by arrow A in (b); (d) is a partial enlarged view of the jig and wire shown in (a) from the side; and (e) is a partial enlarged view of the wire to which paint has been applied using the jig shown in (a). [Figure 7] (a) is a partially enlarged side view of a jig and wire according to a second modified example in which paint is applied to the upper half of the wire; (b) is a partially enlarged side view of the wire to which paint has been applied using the jig shown in (a); (c) is a partially enlarged side view of a jig and wire according to a third modified example in which paint is applied to the upper half of the wire; (d) is a partially enlarged side view of the wire to which paint has been applied using the jig shown in (c); (e) is a partially enlarged side view of a jig and wire according to a fourth modified example in which paint is applied to the upper half of the wire; and (f) is a partially enlarged side view of the wire to which paint has been applied using the jig shown in (e). [Figure 8] 10(a) is a diagram including a horizontal cross section of the standing tree showing a state in which an insulator according to a fifth modified example is attached to the standing tree, and FIG. 10(b) is a diagram of (a) as seen from the direction of the arrow. [Figure 9] (a) is a diagram of an insulator according to the sixth modified example, (b) is a diagram of the insulator shown in (a) tilted by 90 degrees, (c) is a diagram including a cross section of a standing tree to which the insulator shown in (a) is attached, and (d) is a diagram of the insulator shown in (a) viewed from the side where it is attached to the standing tree. [Figure 10] FIG. 13 is a partial view of a forest field showing an electric fence system according to a seventh modified example. [Figure 11] FIG. 13 is a diagram showing a coating method according to an eighth modified example. DETAILED DESCRIPTION OF THE INVENTION

[0013] The following describes in detail the embodiments of the present invention based on specific examples using the accompanying drawings. However, please note that the technical scope of the present invention is not limited to these embodiments, but extends to the inventions described in the claims of the utility model registration and their equivalents. In the embodiments described below, the same or similar elements are given the same reference numerals, and the scale of the drawings has been changed appropriately to facilitate understanding.

[0014] As shown in Figure 1(a), the electric fence device 50 includes an electric shock device 51 with a built-in battery rechargeable by a solar panel 52 and a fence 5 consisting of multiple wires 3 strung on posts 8 in multiple stages and connected by crossover wires 53. The wires 3 are supported in an insulated state from the ground by multiple insulators 1 attached to the posts 8 in the axial direction (i.e., vertical direction) at intervals corresponding to the type of pests to be prevented from entering. In other words, the attachment positions of the multiple insulators 1 on the posts 8 are determined at heights corresponding to the pests to be prevented from entering the protected area. Each of the multiple wires 3 is a plated, conductive, single-strand fencing wire, also referred to as a single-strand wire or simply a wire. The electric shock device 51 boosts the battery voltage and applies power to the single wire 3 as a high-voltage pulse wave of approximately 7000 V via a power line 54. The high-voltage pulse wave applied from the electric shock device 51 to the single wire 3 is then distributed to all stages of the wires 3 via crossover wires 53. The earth rod 9 buried in the ground is connected to the electric shock device 51 via an earth line 55. When a vermin touches the wire 3, a high-voltage pulse wave flows through the body of the vermin into the ground, causing the vermin to receive an electric shock. The high-voltage pulse wave that flows through the body of the vermin into the ground then flows through the earth rod 9 and earth line 55 and returns to the electric shock device 51. When the support post 8 is made of metal, the wire 3 is strung across multiple insulating insulators 1. On the other hand, when the support post 8 is made of wood or is made of an insulating material, the wire 3 is strung across the support post 8 using a conductive member. When the electric fence device 50 is installed on flat land in a forest, standing trees growing in the forest can be used in place of the support posts 8. For example, most of the multiple support posts may be trees growing around the flat land.

[0015] As shown in FIG. 1(b), a protected area 50P protected from pests is located in a forest W where native standing trees 7 exist, for example, in an open space. A straight section 50ST of a fence line 50FL of an electric fence device 50 is located at the boundary between the protected area 50P and the forest W. The fence line 50FL has wires 3 strung over multiple levels, but for ease of explanation, only one level of wire 3 is shown. When trunks 4 of standing trees 7 are used as supports 8 of the electric fence device 50, adjacent insulators 1 are attached to opposite sides of the trunks 4, and the straight sections 50ST of the fence line 50FL are arranged so as to have a zigzag planar shape.

[0016] As shown in FIG. 1(c), the insulator 1 is attached to the trunk 4 of a standing tree 7 by a belt 6, which is a mounting fixture. The housing 2 of the insulator 1 has a pair of raised portions 13 above and below the wire holding surface, and the wire insertion passage 11 is formed in the area sandwiched between the pair of raised portions 13. A pair of arms 12A extending parallel to each other rise from the top surfaces of the raised portions 13 and are arranged on both sides of the wire insertion passage 11 so as to straddle the wire insertion passage 11, preventing the wire 3 from coming off. Gaps larger than the diameter of the wire 3 are formed between the tips of the pair of arms 12A and the raised portions 13, and between the pair of arms 12A, and the wire 3 is inserted into the wire insertion passage 11 by bending it.

[0017] In the electric fence device according to the present invention, after the wire 3 is strung around the tree 7 in the state shown in FIG. 1(b), a colored portion is formed by applying paint of at least one color to an area within the human eye's range of visibility, i.e., an area visible when viewed from above, such as the upper half of at least one wire 3. The colored portion is formed by applying paint of a color that is easily noticeable to humans even in the dark. Since the color of the colored portion is different from the color of the remaining area, including the area below the colored portion, it is easily noticeable to humans even in the dark. The wire 3 having the colored portion is at least one wire 3 among the multiple wires 3, and is also referred to as a colored wire. The color of the colored portion is a color that is easily noticeable to humans in the forest (such as a color not normally found in forests) and that will alert people (e.g., operators inspecting the electric fence device) in the forest. The colored portion may be applied to all of the multiple wires 3 strung around the tree 7, or it may be applied only to the wire 3 located at the top.

[0018] Because people can see the fence line 50FL from a higher position than the fence line 50FL, they can recognize the presence of the wire 3 by seeing the colored portion formed on the upper half of the wire 3 and avoid touching the wire. On the other hand, because pests look up at the wire 3 from below, the colored portion formed on the upper half of the wire 3 is not visible to pests, and the effectiveness of the electric fence device is not reduced. Furthermore, in the electric fence device according to the present invention, by applying paint to the upper side of the wire 3 after stringing it, the colored wire 3 can be less likely to twist and the colored portion to be positioned on the lower half of the wire 3.

[0019] 2 to 5, a jig 60 for applying paint to the upper half of the wire 3, i.e., the area corresponding to the colored portion, to form a colored portion 67 will be described. As shown in FIG. 2(a), the jig 60 has a first wire mounting plate 61 having a groove 63 that engages with the lower half of the wire 3, and a second wire mounting plate 62 having a groove 64 that engages with the upper half of the wire 3, and is capable of sandwiching and holding the wire 3. As shown in FIG. 2(b), a protrusion 63X is formed on the surface opposite the groove 63 of the first wire mounting plate 61, and a protrusion 64X is formed on the surface opposite the groove 64 of the second wire mounting plate 62. The jig 60 is capable of applying paint to the upper half of the wire 3 to color the upper half of the wire 3 a desired color. The first wire mounting plate 61 and the second wire mounting plate 62 are rotatably connected via a hinge portion 65. As shown in Figures 2(b) and 2(c), by rotating one of the first wire mounting plate 61 and the second wire mounting plate 62 via the hinge portion 65, the wire 3 is fitted into the grooves 63 and 64 arranged opposite each other.

[0020] As shown in FIGS. 3(a) and 4(a), when the second wire mounting plate 62 is placed on top of the first wire mounting plate 61, the wire 3 is engaged with the overlapping portion of the groove 63 and the groove 64. As shown in FIGS. 3(b) and 4(b), after the wire 3 is engaged in the groove 63 and the groove 64, the second wire mounting plate 62 is rotated about the hinge portion 65 to separate the second wire mounting plate 62 from the first wire mounting plate 61, thereby exposing the upper half of the wire 3. As shown in FIG. 4(b), paint is applied to the upper half of the wire 3 using a painting tool such as a brush 66 or a spray (not shown) to form a colored portion 67. After the painting operation is completed, the jig 60 is moved to an unpainted area adjacent to the painted area where the paint was applied, and the painting operation to form the colored portion 67 can be repeated. By repeating the painting operation, paint is applied to the entire upper half of the wire 3 strung between the trunks 4. The paint does not have to be applied over the entire wire 3 strung between the trunks 4, and an unpainted area may be arranged between adjacent colored portions 67. In other words, the colored portions 67 do not have to be arranged continuously. The paint may be either a non-conductive paint or a conductive paint.

[0021] As shown in Figures 4(c) and 4(d), the upper half of the wire 3 is painted and has a colored portion 67, while the lower half of the wire 3 does not have a colored portion 67. Figure 5 shows an example of an electric fence device installed in a forest W. As shown in Figure 5, three insulators 1 are attached vertically to the trunk 4 of a standing tree 7, and a fence 5 is formed by three wires 3 strung on the insulators 1. In the fence 5 in which three wires 3 are strung using the insulators 1, the upper half of the wires 3 has a continuous colored portion 67. However, the colored portions 67 do not have to be arranged continuously, and may be arranged in a predetermined pattern, as described below, either continuously or discontinuously.

[0022] The color of the colored portion 67 may be bright red, pink, bright blue, light blue, yellow, gold, white, or fluorescent or phosphorescent colors such as yellow and light sky blue, and may be a color that is not generally found in forests and fields W. When the colored portion 67 is made of conductive paint, the colored portion 67 may be disposed over the entire upper half of the wire 3. However, when the colored portion 67 is made of insulating paint, it has been confirmed that even if non-conductive paint is applied to the entire upper half of the wire 3, vermin will come into contact with the wire 3 and receive an electric shock.

[0023] However, when the colored portion 67 is formed of insulating paint, arranging the colored portion 67 to form a predetermined pattern that exposes the metal portion of the upper half of the wire 3 makes it easier for pests to receive an electric shock. It is preferable to apply paint to the upper half of the wire 3 to form a predetermined pattern that exposes the metal portion of the wire 3, but the paint must be applied in a manner that ensures visibility to humans. It is also preferable that the colored portion 67 be arranged to include the top of the wire 3. Furthermore, in the above example, the top half of the wire 3 is painted to make it more noticeable, but the area to which paint is applied may be narrower than the top half as long as it includes the top.

[0024] As shown in FIG. 6(a), jig 70 differs from jig 60 described with reference to FIG. 2(a) only in the shapes of grooves 73 and 74 and protrusions 73X and 74X. That is, groove 73 is shallower than groove 74 by the thickness of first wire mounting plate 71, whereas groove 74 is deeper than groove 73 by the thickness of second wire mounting plate 72. The thicknesses of first wire mounting plate 71 and second wire mounting plate 72 are the same. Similarly, protrusion 73X formed on the back side of groove 73 is lower than protrusion 74X by the thickness of first wire mounting plate 71, whereas protrusion 74X formed on the back side of groove 74 is higher than protrusion 73X by the thickness of second wire mounting plate 72.

[0025] As shown in FIG. 6( a), when paint is applied to the upper half of the wire 3 using a jig 70, the second wire mounting plate 72 is positioned so as to overlap the first wire mounting plate 71. As shown in FIG. 6( d), in order to apply paint so as to form a pattern on the wire 3, a notch pattern 77 is formed in the protrusion 74X protruding from the second wire mounting plate 72 in the groove 74. As described above, since the groove 74 is deeper than the groove 73, when the wire 3 is engaged with the groove 73 of the first wire mounting plate 71 and the second wire mounting plate 72 is closed, the edge of the groove 74 abuts against the wire 3 engaged in the groove 73 of the first wire mounting plate 71. Therefore, if a notch 76 is formed in the edge of the groove 74 as shown in FIG. 6( c), the edge of the groove 74 will not abut against the wire 3.

[0026] As shown in FIG. 6(d), notch patterns 77 extending in a direction perpendicular to the extension direction of the wire 3 are formed at predetermined intervals on the protrusions 74X protruding from the second wire mounting plate 72 of the groove 74. As shown in FIG. 6(e), by sandwiching the wire 3 in the groove 74 with the notch patterns 77 formed and repeatedly performing the painting operation, colored portions 67 spaced apart from each other in a direction perpendicular to the extension direction of the wire 3 are formed on the upper half of the wire 3. The metal portion of the wire 3 may be exposed between the colored portion 67 formed on the upper half of the wire 3 using one jig 70 and the colored portion 67 formed by an adjacent jig 70. In other words, there may be a gap between one jig 70 and an adjacent jig 70, and the length of the metal portion of the wire 3 may be increased by the gap.

[0027] As shown in Figures 7(a) to 7(f), the notch pattern formed in the jig 70A may be a notch pattern other than the notch pattern 77 extending in a direction perpendicular to the extension direction of the wire 3. The jig 70A shown in Figure 7(a) has a plurality of thin notch patterns 77A arranged in the circumferential direction of the groove 74 on the upper protrusion 74X. The length of the notch pattern 77A in the extension direction of the wire 3 is shorter than the length of the protrusion 74X in the extension direction of the wire 3. As shown in Figure 7(b), by applying an insulating paint to the notch pattern 77A of the jig 70A, colored portions 67 are formed on the wire 3 that are spaced apart from each other in a direction parallel to the extension direction of the wire 3.

[0028] A jig 70B shown in FIG. 7(c) has a spiral cutout pattern 77B formed in the rib protrusion 74X of the jig 70B (the rib protrusion 73X does not have a spiral cutout pattern). As shown in FIG. 7(d), a wire 3 has a colored portion 67 formed with a part of a spiral pattern by applying an insulating paint to the cutout pattern 77B of the jig 70B. A jig 70C shown in FIG. 7(e) has a polka dot cutout pattern 77C formed in the rib protrusion 74X of the jig 70C. As shown in FIG. 7(f), a wire 3 has a colored portion 67 formed with a polka dot pattern by applying an insulating paint to the cutout pattern 77C of the jig 70C. In the example described with reference to FIGS. 7(e) and 7(f), the polka dots forming the polka dot pattern have the same diameter, but the diameters of the polka dots may be different.

[0029] As shown in Figures 8(a) and 8(b), the synthetic resin forming the insulator 1 attached to the trunk 4 of a standing tree may be the same color as the colored portion 67 arranged on the wire 3. In other words, the visible color of the insulator 1 may be the same as the color of the colored portion 67. The insulator 1, which includes an upper wall 22U, a left wall 21L, and a right wall 21R, is attached to the trunk 4 with cable ties 6 inserted through mounting holes 14A located under the cover 17. The cable ties 6 attaching the insulator 1 to the trunk 4 are fastened with fasteners 6B on the opposite side of the trunk 4. The upper wall 22U of the insulator 1 has recesses 26 and 27, and the abutment portion 26T of the recess 26 abuts against the trunk 4. The wire 3 is strung through the wire insertion passage 11 of the insulator 1 and is fixed to the insulator 1 by an arm 12A, which functions as a disconnection prevention mechanism 12. The color of the colored portion 67 disposed on the upper half of the insulator 1 and the wire 3 may be pink.

[0030] As shown in FIGS. 9(a) to 9(d), the insulator for stringing the wire 3 may be a connectable insulator 1B having a different shape from the insulator 1. As shown in FIGS. 9(a), 9(b), and 9(d), the insulator 1B has a base plate 40 and a mounting member 42 that is disposed on the mounting side of the base plate 40 to the trunk 4 and has a hole 42H for inserting the belt 6. As shown in FIG. 9(c), the insulator 1B is mounted to the trunk 4 by the belt 6 and fastened by a fastener 6B. The insulator 1B is designed to be connectable to a thick trunk 4, and as shown in FIG. 9(d), a projection 43P is formed on one side 431 of a connecting member 43, and a hole 43H that receives the projection 43P is formed on the other side 432 of the connecting member 43. The insulator 1B on the side where the wire 3 is strung has a wall member 41W, an extension 41WE, and a ceiling member 41C formed on a base plate 40 as a wire holding member 41. As shown in FIG. 9(c), the wire 3 is strung on the trunk 4 of the standing tree 7 using the insulator 1B. The color of the colored portion 67 arranged on the insulator 1B and the upper half of the wire 3 may be light sky blue.

[0031] As shown in Figure 10, in an electric fence system, different colors of colored portions 67 arranged on the upper halves of the insulators and wires of a first electric fence device 50A installed on flat ground P1 and a second electric fence device 50B installed on flat ground P2 can facilitate the individualization of the first electric fence device 50A and the second electric fence device 50B. In this case, the first electric fence device 50A has a first electric shock device that supplies power to multiple first wires 3A, and the second electric fence device 50B has a second electric shock device that supplies power to multiple second wires 3B. For example, in the first electric fence device 50A, pink first insulators 1C are attached to the trunk 4, which is a plurality of first posts arranged to surround a first protected area protected from pests, to support the multiple first wires 3A, and the first colored portion 67A arranged on the upper halves of the first wires 3A is pink. On the other hand, in the second electric fence device 50B, the trunks 4, which are the multiple second posts arranged to surround the second protected area adjacent to the first protected area, are fitted with bright sky blue second insulators 1D to support multiple second wires 3B, and the second colored portion 67B arranged on the upper half of the second wires 3B is bright sky blue. By using different colors for the first insulators 1C and 1D and the first colored portion 67A and second colored portion 67B between the first electric fence device 50A installed on flat ground P1 and the second electric fence device 50B installed on flat ground P2, inspectors can easily see the wire they are inspecting. This allows inspectors to easily see the wire they are inspecting, reducing the risk of misidentifying the electric fence device they are inspecting. Note that the electric fence system shown in Figure 10 includes two electric fence devices, a first electric fence device 50A and a second electric fence device 50B, but the electric fence system of the embodiment only needs to include at least one electric fence device placed in an open space that is the protected area.

[0032] The above describes a method for painting the upper portion of the wire 3 using a jig. However, when applying a single color of paint over the entire upper portion of the wire 3, the paint may be applied without using a jig. As shown in FIG. 11 , paint can be applied by using a marker 80, contacting the pen tip 81 of the marker 80 with the upper portion of the overhead wire 3 and applying ink 82, an example of a paint, to the upper portion of the wire 3. While it is not easy to apply paint over the entire upper portion of the wire 3 using a marker, applying a highly visible color of paint over the width of the pen tip 81 to the upper portion of the wire 3 makes the wire 3 visible. The width of the paint applied to the upper portion of the wire 3 with the marker 80 need only be visible to humans. In addition to the application method using the marker 80, other methods include using a roller with thin bristles that contains paint and has small holes to allow the paint to gradually leak out, or a roller with a built-in ink reservoir, which has an ink reservoir inside and allows ink to seep out from a sponge on the outside of the roller as the roller is rolled. The upper part of the wire 3 can be painted.

[0033] The present invention may also be embodied in the following ways: [Aspect 1] An electric fence device in which a fence is formed by stringing multiple single-wire wires in multiple stages on posts, and a high-voltage pulse is applied to the wires from an electric shock device, and the posts are made of standing trees in a forest with insulators attached. An electric fence device that uses wires in which at least the upper part of the top wire is painted with a color that is not found in forests or fields. [Aspect 2] The electric fence device of claim 1, wherein the painted portion is painted using a specified jig or a specified painting tool after the wire has been strung on the insulator. Aspect 3 3. The electric fence device according to claim 2, wherein the painted portion is a portion of the wire having a predetermined width from the top portion of the wire. Aspect 4 The electric fence of the first aspect of the invention is characterized in that the painted portion is painted after the wire has been strung on the insulators, with the paint contained in a cylindrical metal container and the paint applied using a marker with a felt tip. Aspect 5 An electric fence device in which a fence is formed by stringing single-wire wires in multiple stages on posts, and a high-voltage pulse is applied to the wires from an electric shock device, and the posts are made of standing trees in a forest with insulators attached. A fence of an electric fence device that includes wires in which at least the upper part of the top wire is painted with a non-conductive paint of a color not found in forests and fields, in a predetermined pattern that leaves the metal part of the wire partially exposed. Aspect 6 6. A fence of an electric fence device according to claim 5, wherein the partial exposure of the metal portion of the wire is a predetermined width exposure in a direction perpendicular to the extension direction of the wire. Aspect 7 6. A fence of an electric fence device according to claim 5, wherein the partial exposure of the metal portion of the wire is a predetermined width exposure in a direction parallel to the extension direction of the wire. Aspect 8 6. A fence of an electric fence device according to claim 5, wherein the partial exposure of the metal portion of the wire is a spiral exposure of a predetermined width relative to the extension direction of the wire. Aspect 9 6. The fence of the electric fence apparatus according to claim 5, wherein the predetermined pattern is a polka dot pattern. Aspect 10 The insulator is made of synthetic resin, 6. A fence of an electric fence device according to aspect 1 or 5, wherein the color of the synthetic resin or the color of the paint used to coat the outer surface of the synthetic resin is the same color as the color of the paint used to coat the upper part of the wire. Aspect 11 A fence of an electric fence device as described in aspect 10, in which, when multiple sets of electric fence devices are installed close to each other, the color of the synthetic resin or the color of the paint used to coat the outer surface of the synthetic resin is made different for each electric fence device. Aspect 12 6. The fence of the electric fence device according to claim 1 or 5, wherein the paint color includes a fluorescent color and is a color that provides excellent visibility even in the dark. Aspect 13 13. The fence of the electric fence device according to claim 12, wherein the paint color is any one of bright red, pink, bright blue, light blue, yellow, gold, white, and fluorescent yellow. [Explanation of symbols]

[0034] 1 insulator 3 wire 4 stems 5. Fence 6 Mounting bracket (cable tie) 7 Standing trees 8 pillars 50 Electric Fence Device 51 Electric Shock Device 53 Crossover 60, 70 jig 61,71 First wire mounting plate 62, 72 Second wire mounting plate 63,64,73,74 Groove 65,75 Hinge part 67, 67AB, 67B Colored section 63X, 64X, 73X, 74X protrusions 76 Notch 77, 77A, 77B, 77C Notch Pattern 80 markers 82 Ink

Claims

1. a plurality of posts arranged to surround a protected area that is protected from pests; A plurality of insulators are attached to the outer surfaces of the plurality of supports in a vertical direction at intervals according to the types of pests to be prevented from entering; wires respectively strung on the insulators; an electric shock device that supplies a voltage to the wire to electrocute the vermin, The electric fence device includes providing a colored portion that is colored with at least one color that is easily noticeable to people even in the dark on at least one wire that is within a visible range when viewed from the human eye.

2. At least one of the supports is formed from a standing tree growing in a forest, The electric fence device according to claim 1 , wherein the color of the colored portion is a color that does not exist in the forest, including a phosphorescent color or a fluorescent color.

3. The electric fence device of claim 2 , wherein the colored portion is disposed only on the wire in the uppermost row.

4. The electric fence device according to claim 3 , wherein the colored portion is positioned to include the top of the wire that is strung across the insulator.

5. The electric fence device according to claim 3 , wherein the colored portion is formed by painting after the wire is strung.

6. The electric fence device according to claim 5, wherein the colored portions are arranged to form a predetermined pattern that is continuous or discontinuous in the extension direction of the wire having the colored portions.

7. The electric fence device according to claim 6, wherein the colored portion is formed using a jig capable of clamping and holding the wire.

8. 3. The electric fence device of claim 2, wherein the protected area is a flat area in a forest, and most of the plurality of posts are a grove of trees growing around the flat area.

9. The electric fence device according to any one of claims 2 to 8, wherein the visible color of the insulator is the same as the color of the colored portion.

10. 1. An electric fence system comprising at least one electric fence device disposed within an open space that is a protected area, wherein each of the electric fence devices comprises: Multiple supports, including supports made from standing trees growing in the forest, A plurality of insulators attached to the support poles at heights that correspond to the height of pests that are to be prevented from entering the protected area; wires respectively strung on the insulators; An electric shock device is provided for each electric fence device and supplies a voltage to the wire that electrocutes the pests, At least one of the wires has a colored portion that is colored with a color that is easily noticeable to humans in a region that is visible to the human eye, An electric fence system characterized in that the color of the colored part in the electric fence device is the same as the color of the insulator, and when there are multiple electric fence devices in the protected area, the color is different for each electric fence device.

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