Bird damage prevention equipment

Abstract

To provide a bird damage prevention device that can be easily attached to power lines. [Solution] The bird damage prevention device 10 includes a first extending portion 1 that extends in a first direction along the electric wire C, a second extending portion 2 that extends parallel to the first extending portion, a pair of connecting portions 3 and 4 that connect both ends of the first extending portion and both ends of the second extending portion, a pair of fixing portions 5 and 6 between the connecting portions, through which a space is formed for the electric wire to pass, and a plurality of protrusions provided at intervals in the first direction on at least one of the first extending portion and the second extending portion. The structure comprises parts 7a, 7b, and 8, with one end of each fixed part being pivotably connected to the end of the first extending part or the connecting part on the first extending part side, and the other end of each fixed part being detachably connected to the end of the second extending part or the connecting part on the second extending part side, thereby fixing the fixed part in place. The weight is adjusted so that when an electric wire is held in the space between the connecting part and the fixed part, the first extending part, the electric wire, and the second extending part are aligned in this order in the vertical direction.

Description

Technical Field

[0001] The present invention relates to a bird damage prevention device attached to an electric wire.

Background Art

[0002] Patent Document 1 discloses a bird damage prevention device attached to an electric wire. This bird damage prevention device has a cylindrical base portion and a plurality of protruding portions extending radially from the outer peripheral surface of this base portion. A through hole is formed in the base portion along the axial direction, and the electric wire is configured to be housed inside the base portion through this through hole. Further, after housing the electric wire inside the base portion, it is configured to cover a part of the through hole with a plate material, thereby preventing the electric wire from detaching from the base portion.

Prior Art Documents

Non-Patent Documents

[0003]

Patent Document 1

Disclosure of the Invention

Problems to be Solved by the Invention

[0004] However, in the above bird damage prevention device, after arranging the electric wire in the base portion, there is a possibility that the base portion rotates around the electric wire, and as a result, it is difficult to attach the plate material, and there is a problem that it is not easy to attach the bird damage prevention device to the electric wire. The present invention has been made to solve this problem, and an object thereof is to provide a bird damage prevention device that can be easily attached to an electric wire.

Means for Solving the Problems

[0005] Item 1. A bird damage prevention device attached to an electric wire, a first extending portion extending in a first direction along the electric wire, a second extending portion extending parallel to the main body portion, A pair of connecting parts that connect both ends of the first extension and both ends of the second extension, A pair of fixing parts are configured to form a space through which the electric wire passes between each of the aforementioned connecting parts, In at least one of the first and second extended portions, a plurality of protrusions are provided at intervals in the first direction, Equipped with, One end of each of the aforementioned fixed portions is pivotably connected to the end of the first extension portion or the connecting portion on the first extension portion side. The other end of each of the aforementioned fixing parts is configured to be detachably connected to the end of the second extension part or the connecting part on the second extension part side, thereby being fixed in place. When the fixed portion is in the fixed state and the electric wire is held in the space between the connecting portion and the fixed portion, the weights of the first extending portion, the electric wire, and the second extending portion are adjusted so that they are aligned vertically in this order. Bird damage prevention equipment.

[0006] Item 2. The bird repellent device according to Item 1, further comprising a temporary fastening portion fixed to at least one of the first and second extension portions between the pair of connecting portions in the first direction for temporarily fastening the electric wire.

[0007] Item 3. The temporary fastening portion has a first portion and a second portion that are spaced apart in the first direction, The first and second portions are configured to form a closed space through which the electric wire passes when viewed from the first direction. Bird damage prevention device as described in item 2.

[0008] Item 4. Each connecting portion has a first curved portion for forming the space, a through hole formed on the side of the second extended portion that is further than the first curved portion, and a protrusion formed on the side of the second extended portion that is further than the through hole. Each of the aforementioned fixing portions has a second curved portion formed opposite to the first curved portion in order to form the space, a protruding portion formed on the second extension side of the second curved portion, and a claw portion formed on the first extension side at the tip of the protruding portion. The fixing portion is configured such that the protruding portion of the fixing portion enters the through hole of the connecting portion, and the claw portion engages with the periphery of the through hole, thereby fixing the fixing portion to the connecting portion. Bird damage prevention device as described in any of items 1 to 3.

[0009] Item 5. The bird-repellent device according to any one of items 1 to 4, wherein at least one of the first extension and the second extension is reinforced by a rod-shaped member having a higher strength than the first extension and the second extension. [Effects of the Invention]

[0010] The bird damage prevention device according to the present invention can be easily attached to power lines. [Brief explanation of the drawing]

[0011] [Figure 1] This is a perspective view of a bird damage prevention device according to one embodiment of the present invention. [Figure 2] This is a front view of Figure 1. [Figure 3] This is a rear view of Figure 1. [Figure 4] This is a side view from the right side of Figure 1. [Figure 5] This is a side view from the left side of Figure 1. [Figure 6] This is a side view of the temporary fastening section, seen from the right side. [Figure 7] This is a side view showing the attachment of a bird damage prevention device to a power line. [Figure 8] This is a side view showing the attachment of a bird damage prevention device to a power line. [Figure 9] This is a perspective view showing the attachment of bird damage prevention equipment to power lines. [Figure 10] This is a side view showing the attachment of a bird damage prevention device to a power line. [Figure 11]It is a side view showing the attachment of the bird damage prevention device to the electric wire. [Figure 12] It is a side view showing the attachment of the bird damage prevention device to the electric wire. [Figure 13] It is a side view showing the removal of the fixing part in the bird damage prevention device.

Mode for Carrying Out the Invention

[0012] Hereinafter, an embodiment of the bird damage prevention device according to the present invention will be described with reference to the drawings.

[0013] <1. Overview of Bird Damage Prevention Device> FIG. 1 is a perspective view of the bird damage prevention device, FIG. 2 is a front view of FIG. 1, and FIG. 3 is a rear view. In the following description, for convenience of explanation, the description will be made according to the direction shown in FIG. 1. However, this direction is an example when the bird damage prevention device is stationary, and when the orientation of the bird damage prevention device changes, the direction will naturally change.

[0014] As shown in FIGS. 1 to 3, the bird damage prevention device 10 according to the present embodiment includes a first extending portion 1 extending in a direction along the electric wire (first direction), a second extending portion 2 extending in parallel at an interval from the first extending portion 1, a pair of connecting portions 3 and 4 connecting both ends of these two extending portions 1 and 2, a pair of fixing portions 5 and 6 forming a space through which the electric wire C passes between each connecting portion 3 and 4, a plurality of protruding portions 7 and 8 provided on each of the first extending portion 1 and the second extending portion 2, and a temporary fixing portion 9 for temporarily fixing the electric wire C. Hereinafter, each part will be described.

[0015] <1-1. First Extending Portion and Second Extending Portion> The first extending portion 1 is formed in a rod shape, and a plurality of needle-shaped first protruding portions 7 are formed at a predetermined interval in the left-right direction at the upper end portion thereof. Two types of first protruding portions 7 are provided, and short long protruding portions 7a and short short protruding portions 7b with short lengths extend upward alternately.

[0016] The second extension portion 2 is formed in a rod shape with approximately the same length as the first extension portion 1, and multiple needle-shaped second projections 8 are formed at predetermined intervals in the left-right direction at its upper end. The second projections 8 consist of one type and are formed to be approximately the same length as the short projections 7b described above. Furthermore, the spacing between the second projections 8 is wider than the spacing between the first projections 7.

[0017] The length, spacing, orientation, and shape of the first projection 7 and the second projection 8 are not particularly limited and can be changed as appropriate.

[0018] <1-2. Connecting part> Figure 4(a) is a side view from the right before the connecting part and the fixing part are fixed, and Figure 4(b) is a side view from the right when the connecting part and the fixing part are fixed. Figure 5 is a side view of the connecting part and the fixing part from the left. Each connecting part 3 and 4 is configured to connect the ends of the first extending part 1 and the second extending part 2. The first extending part 1 and the second extending part 2 are connected by both connecting parts 3 and 4 with a gap between them in the vertical direction. Here, the connecting part on the left side of Figure 2 will be referred to as the first connecting part 3, and the connecting part on the right side will be referred to as the second connecting part 4.

[0019] In the following, the second connecting portion 4 will be described first, with reference to Figure 4. The second connecting portion 4 has a curved portion 41 that protrudes to the rear, an engaging portion 42, and a protruding portion 43. The curved portion 41 is formed in the shape of a circular arc with a central angle of approximately 180 degrees in a side view, and the upper end of the curved portion 51 is fixed to the end of the first extending portion 1. An engaging portion 42 that extends downward is connected to the lower end of the curved portion 41. A rectangular through hole 421 extending in the front-rear direction is formed in the engaging portion 421, and as will be described later, the protruding portion 63 of the fixing portion 6 is configured to engage with this through hole 421 in a detachable manner.

[0020] The protrusion 43 is located on the front surface of the engaging portion 42, below the through hole 421. The protrusion 43 is formed in a rectangular parallelepiped shape and protrudes forward from the engaging portion 42.

[0021] On the inner circumferential surface of the curved portion 41, arc-shaped grooves 44 (not shown) are formed, into which the large-diameter portions 35 of the first connecting portion 3 of another bird damage prevention device 10 are fitted.

[0022] As shown in Figure 5, the first connecting portion 3 has a configuration that is generally similar to that of the second connecting portion 4, and includes a curved portion 31 that protrudes to the rear, an engaging portion 32, and a protruding portion 33. The difference between the first connecting portion 3 and the second connecting portion 4 lies in the configuration of the curved portion 31. As shown in Figure 3, the left end of the curved portion 31 has an arc-shaped small-diameter portion 34 and an arc-shaped large-diameter portion 35 that extends radially outward from the left end of the small-diameter portion 34. This large-diameter portion 35 fits into a groove 44 formed in the second connecting portion 4 of another bird-repellent device 10, thereby connecting the two bird-repellent devices 10 in the direction in which the electric wire C extends.

[0023] <1-3. Fixed part> Each of the fixing parts 5 and 6 is rotatably connected to both ends of the first extension part 1. Here, the left-side connecting part will be referred to as the first fixing part 5, and the right-side fixing part as the second fixing part 6.

[0024] In the following, the second fixing part 6 will be described first, with reference to Figure 4. The second fixing part 6 has a curved part 61 that protrudes forward, a support part 62, and a protruding part 63. The curved part 61 is formed in the shape of a circular arc with a central angle of approximately 180 degrees in a side view, and the upper end of the curved part 61 is rotatably fixed to the end of the first extending part 1. More specifically, the upper end of the curved part 61 is pivotable around a rotation axis that extends in the axial direction of the first extending part 1.

[0025] The shape of this curved portion 61 is approximately the same size as the curved portion 41 of the second connecting portion 4. Therefore, when the second fixed portion 6 swings relative to the first extending portion 1, the lower ends of both curved portions 41 and 61 come into contact with each other. As a result, a circular space S1 is formed between the two curved portions 41 and 61, and the electric wire C is inserted into this space S1.

[0026] Furthermore, arc-shaped grooves 64 (see Figure 9) are formed on the inner circumferential surface of the curved portion 61, into which the large-diameter portions 35 of the first fixing portion 5 of another bird-repellent device 10 are fitted. These grooves 64 and the groove 44 of the second connecting portion 4 form an annular groove.

[0027] A support portion 62 extending downward is connected to the lower end of the curved portion 61. A plate-shaped projection 63 extending in the front-rear direction is formed on the front surface of the support portion 62. The projection 63 can be bent vertically by elastic deformation. In addition, a triangular claw portion 631 in side view is formed on the upper surface of this projection 63, which protrudes upward.

[0028] As shown in Figure 4(b), when the second fixing portion 6 rotates relative to the first extending portion 1 and the lower ends of both curved portions 41 and 61 come into contact, the protruding portion 63 is inserted into the through hole 421 of the second connecting portion 4. At this time, the claw portion 631 engages with the vicinity of the upper edge of the through hole 421, thereby fixing the second fixing portion 6 to the second connecting portion 4. On the other hand, when the claw portion 631 is engaged with the through hole 421, moving the claw portion 631 downwards releases the engagement between the claw portion 631 and the through hole 421, allowing the second fixing portion 6 to separate from the second connecting portion 4.

[0029] As described above, the upper end of the second fixing part 6 is pivotably fixed to the end of the first extending part 1. Therefore, for example, when the orientation of the bird damage prevention device 10 is changed, the first fixing part 5 is configured to pivot relative to the first extending part 1 due to its own weight.

[0030] As shown in Figure 5, the first fixing part 5 has a configuration that is generally similar to that of the second fixing part 6, and includes a curved part 51 that protrudes to the rear, an engaging part 52, and a protruding part 53. The difference between the first fixing part 5 and the second fixing part 6 lies in the configuration of the curved part 51. As shown in Figure 2, the left end of the curved part 51 has an arc-shaped small diameter part 54 and an arc-shaped large diameter part 55 that extends radially outward from the left end of the small diameter part 54. These small diameter part 54 and large diameter part 55 come into contact with the small diameter part 34 and large diameter part 35 of the first connecting part 3, forming an annular connecting part. This connecting part then engages with the groove described above, thereby connecting adjacent bird damage prevention devices 10 in the axial direction.

[0031] <1-4. Temporary fastening section> The temporary fastening portion 9 will be explained with reference to Figure 6. Figure 6 is a side view of the temporary fastening portion 9 as seen from the right side. As shown in Figure 2, the temporary fastening portion 9 is provided near the center of the first extension portion 1 and the second extension portion 2, and has a first portion 91 and a second portion 92. The first portion 91 has a curved portion 911 that is convex to the rear, and a support portion 912 that extends downward from the lower end of the curved portion 911. The curved portion 911 is formed in an arc shape similar to the curved portion 31 of the first connecting portion 3, and the upper end of the curved portion 911 is connected to the first extension portion 1. The lower end of the support portion 912 is connected to the second extension portion 2. Therefore, the first portion 91 connects the first extension portion 1 and the second extension portion 2.

[0032] The second portion 92 is positioned slightly offset from the first extending portion 1 in the left-right direction and has a curved portion 921 that protrudes forward and an extension portion 922 that extends from the lower end of the curved portion 921. The curved portion 921 is formed in an arc shape similar to the curved portion 31 of the first connecting portion 3, and the upper end of the curved portion 921 is connected to the first extending portion 1. The extension portion 922 extends diagonally downward from the curved portion 921, and the lower end of the extension portion 922 is located in front of the second extending portion 2. In other words, a gap is formed between the extension portion 922 and the second extending portion 2.

[0033] Furthermore, in a side view, the curved portion 911 of the first portion 91 and the curved portion 921 of the second portion 92 form a circular space S2, through which the electric wire C is inserted. This space S2 is located in approximately the same position as space S1 in a side view. Also, in a side view, the lower end of the curved portion 911 of the first portion 91 and the lower end of the curved portion 921 of the second portion 92 overlap. Therefore, the electric wire C inserted into space S2 is prevented from detaching downwards due to this overlap.

[0034] <1-5. Materials and weight adjustment for bird damage prevention devices> The materials that make up the bird damage prevention device 10 are not particularly limited and can be made of, for example, resin material, metal, etc. However, the parts that refer to elastic deformation in the above description can be made of an elastically deformable material (such as resin material).

[0035] Furthermore, when the fixing parts 5 and 6 are attached to the connecting parts 3 and 4, and the electric wire C is held in the space S1 between the connecting parts 3 and 4 and the fixing parts 5 and 6, the weight of the bird damage prevention device 10 is adjusted so that the first extending part 1, the electric wire C, and the second extending part 2 are arranged vertically in this order, as shown in Figure 1. For example, it is possible to adjust the weight so that the weight of the second extending part 2 is greater than that of the first extending part 1. Also, for example, weight adjustment can be made by attaching other members to the second extending part 2.

[0036] <2. Installation Method of Bird Damage Prevention Devices> The method for attaching the bird damage prevention device, configured as described above, to the power line will be explained with reference to Figures 7 to 13. First, as shown in Figure 7, a gripping tool 20 such as pliers is used to grasp the vicinity of the first portion 91 of the second extension portion 2 and the temporary fixing portion 9, and the orientation is set so that both extension portions 1 and 2 are aligned approximately horizontally and both connecting portions 3 and 4 are convex upwards. As a result, the fixing portions 5 and 6 rotate downwards relative to the first extension portion 1 due to their own weight, and are suspended from the first extension portion 1.

[0037] Next, the electric wire C is temporarily fixed to the temporary fixing part 9. That is, as shown in Figure 8, the electric wire C is placed between the second extension part 2 and the extension part 922 of the second part 92, and the bird damage prevention device 10 is pulled forward (to the right in Figure 8). As a result, the electric wire C presses against the extension part 922, causing the second part 92 to deform downward. Therefore, the overlap between the lower end of the curved part 911 of the first part 91 and the lower end of the curved part 921 of the second part 92 is pushed apart, and the electric wire C is placed in the space S2.

[0038] At this point, as shown in Figure 9, the electric wire C is positioned below the curved portions 31 and 41 of each connecting portion 3 and 4. At this stage, the electric wire C is not fixed to the connecting portions 3 and 4 or the fixing portions 5 and 6, but even if the orientation of the bird damage prevention device 10 changes, the electric wire C is temporarily fixed by the temporary fixing portion 9, thus preventing it from detaching.

[0039] Next, as shown in Figure 10, when the gripping tool 20 is released from the bird-repellent device 10, the weight adjustment described above causes the bird-repellent device 10 to rotate so that the second extension 2 rotates below the first extension 1, with the electric wire C temporarily fixed to the temporary fixing part 9, and the electric wire C is pivoted around it. As a result, as shown in Figure 11, each fixing part 5, 6 is positioned facing each connecting part 3, 4. Consequently, the electric wire C is positioned between the connecting parts 3, 4 and the fixing parts 5, 6.

[0040] Next, the gripping tool 20 is used to grip the engaging portion 42 of the second connecting portion 4 and the support portion 62 of the second fixing portion 6, as shown in Figure 12(a), bringing them closer together. As a result, as shown in Figure 4(a), the protruding portion 63 of the second fixing portion 6 is inserted into the through hole 421 of the second connecting portion 4, and the claw portion 631 engages with the vicinity of the outer edge of the through hole 421. This prevents the claw portion 631 from coming loose, fixing the second connecting portion 4 and the second fixing portion 6 together. As a result, the aforementioned space S1 is formed, and the electric wire C is held within this space S1. Similarly, the first connecting portion 3 and the first fixing portion 5 are fixed together with the gripping tool 20. In this way, the electric wire C is fixed to the bird damage prevention device 10, and the installation is completed.

[0041] As shown in Figure 12(b), the second connecting portion and the second fixing portion can also be fixed together by using the gripping tool 20 to clamp the protrusion 43 of the second connecting portion 4 and the support portion 62 of the second fixing portion 6.

[0042] Thus, as shown in Figure 1, the bird damage prevention device 10 attached to the power line C is provided with protrusions 7 and 8 on both extended parts 1 and 2, which prevents birds from perching on the power line C.

[0043] Furthermore, instead of providing only one bird-repellent device 10 to the electric wire C, two or more bird-repellent devices 10 can be connected along the electric wire C using the aforementioned connecting parts and grooves. To connect the bird-repellent devices 10, first, the first connecting part 3 and the first fixing part 5 are fixed together to form a connecting part. Next, before fixing the second connecting part 4 and the second fixing part 6 of the other bird-repellent device 10, the connecting parts are fixed into the grooves 44 and 64 provided therein, and then the second connecting part 4 and the second fixing part 6 are fixed together. As a result, the large diameter parts 35 and 55 of the connecting parts act as a stopper, fixing adjacent bird-repellent devices 10 together.

[0044] Furthermore, to detach the bird-repellent device 10 from the electric wire C, the fixing parts 5 and 6 are removed from the connecting parts 3 and 4. At this time, as shown in Figure 13(a), the gripping tool 20 is used to clamp the upper surfaces of the claw parts 531 and 631 and the lower surface of the second extending part 2, thereby releasing the engagement between the claw parts 531 and 631 and the through holes 321 and 421. As a result, the fixing parts 5 and 6 can be detached from the connecting parts 3 and 4, and the bird-repellent device 10 can be detached from the electric wire C.

[0045] Alternatively, as shown in Figure 13(b), the gripping tool 20 can be used to clamp the upper surfaces of the claw portions 531 and 631 and the lower surface of the convex portion 43, thereby releasing the engagement between the claw portion 631 and the through holes 321 and 421.

[0046] <3. Features> The bird damage prevention device configured as described above can achieve the following effects. (1) The fixing parts 5 and 6 are pivotable relative to the bird damage prevention device 10, and by adjusting the orientation of the bird damage prevention device 10, the fixing parts 5 and 6 can be positioned facing the connecting parts 3 and 4 by their own weight. Also, by adjusting the weight of the bird damage prevention device 10, as shown in Figure 1, when the electric wire C is placed between the connecting parts 3 and 4 and the fixing parts 5 and 6, the first extending part 1, the electric wire C, and the second extending part 2 are arranged in a vertical direction (hereinafter referred to as the mounting position). Therefore, when the bird damage prevention device 10 is in the mounting position, the fixing parts 5 and 6 are positioned facing the connecting parts 3 and 4 by their own weight, so the fixing parts 5 and 6 and the connecting parts 3 and 4 can be easily fixed together by gripping them with the gripping tool 20.

[0047] (2) Because a temporary fixing part 9 is provided, by attaching the electric wire C to the temporary fixing part 9, the electric wire C can be stably fixed so as not to come loose even before the electric wire C is positioned between the connecting parts 3, 4 and the fixing parts 5, 6. Therefore, the bird damage prevention device 10 can be attached to the electric wire C using a single gripping tool 20.

[0048] (3) Since a space is formed between the first extended section 1 and the second extended section 2, the area exposed to wind during construction can be reduced. This makes it less susceptible to changes in the orientation of the bird damage prevention device 10 due to wind.

[0049] (4) Since the connecting parts 3 and 4 are provided with protrusions 33 and 43, the fixing parts 5 and 6 can be easily attached and detached by using these protrusions 33 and 43. For example, as shown in Figure 12(b), when attaching, if the gripping tool 20 is placed on the protrusion 43, the gripping tool 20 and the claw part 631 can be fixed without interference. On the other hand, when detaching, as shown in Figure 13(b), by placing the gripping tool 20 on the lower surface of the protrusion 43, force can be stably applied to the claw part 631, and the engagement between the claw part 631 and the through hole 421 can be easily released.

[0050] <4. Variation> Although one embodiment of the present invention has been described above, the present invention is not limited to the above embodiment, and various modifications are possible without departing from the spirit of the invention. Furthermore, the following modifications can be combined as appropriate, and can also be combined with the above embodiment.

[0051] (1) Since the first extended portion 1 and the second extended portion 2 are rod-shaped members, reinforcing materials such as rod-shaped FRP material with higher strength than the extended portions 1 and 2 can be provided inside or outside the extended portions 1 and 2 to reinforce them. The reinforcing materials may be provided along the entire length of the extended portions 1 and 2, or only in part. Multiple reinforcing materials may also be provided to the extended portions 1 and 2 so as to be spaced apart and aligned in the axial direction. Furthermore, it is not necessary to provide reinforcing materials to both extended portions 1 and 2, but to provide them to only one of them.

[0052] (2) The temporary fixing portion 9 is not necessarily required and may not be provided. Even without the temporary fixing portion 9, for example, the electric wire C can be held inside near the upper ends of the connecting portions 3, 4 and the fixing portions 5, 6. Alternatively, the bird damage prevention device 10 can be held on the electric wire C by another gripping member until the connecting portions 3, 4 and the fixing portions 5, 6 are fixed in place.

[0053] (3) The configuration of the connecting parts 3, 4 and the fixing parts 5, 6 is not particularly limited, and it is sufficient that the fixing parts 5, 6 are pivotable and that when both are fixed, a space S1 through which the electric wire C is inserted is formed. Therefore, the shape of the connecting parts 3, 4 and the fixing parts 5, 6, the fixing method, the shape of the space S1, etc. are not particularly limited. [Explanation of symbols]

[0054] 1: 1st extension part 2 :Second extension part 3: 1st connection part 4:Second connection part 5: 1st fixed part 6:Second fixed part 9: Temporary fastening part 10:Bird damage prevention equipment C: Electric wire S1: Space

Claims

1. A bird damage prevention device that is attached to power lines, A first extending portion that extends in a first direction along the aforementioned electric wire, A second extending portion extending parallel to the main body portion, A pair of connecting parts that connect both ends of the first extension and both ends of the second extension, A pair of fixing parts are configured to form a space through which the electric wire passes between each of the aforementioned connecting parts, In at least one of the first and second extended portions, a plurality of protrusions are provided at intervals in the first direction, Equipped with, One end of each of the aforementioned fixed portions is pivotably connected to the end of the first extension portion or the connecting portion on the side of the first extension portion. The other end of each of the aforementioned fixing parts is configured to be detachably connected to the end of the second extension part or the connecting part on the second extension part side, thereby being fixed in place. When the fixing portion is in the fixed state and the electric wire is held in the space between the connecting portion and the fixing portion, the weights of the first extending portion, the electric wire, and the second extending portion are adjusted so that they are aligned vertically in this order. Bird damage prevention equipment.

2. The bird damage prevention device according to claim 1, further comprising a temporary fastening portion fixed to at least one of the first and second extending portions between the pair of connecting portions in the first direction for temporarily fastening the electric wire.

3. The temporary fastening portion has a first portion and a second portion that are spaced apart in the first direction, The first and second portions are configured to form a closed space through which the electric wire passes when viewed from the first direction. The bird damage prevention device according to claim 2.

4. Each of the aforementioned connecting portions has a first curved portion for forming the space, a through hole formed on the side of the second extended portion that is further than the first curved portion, and a protrusion formed on the side of the second extended portion that is further than the through hole. Each of the aforementioned fixing portions has a second curved portion formed to face the first curved portion in order to form the space, a protruding portion formed on the second extension side of the second curved portion, and a claw portion formed on the first extension side at the tip of the protruding portion. The fixing portion is configured to be fixed to the connecting portion by the protruding portion of the fixing portion entering the through hole of the connecting portion and the claw portion engaging with the periphery of the through hole. The bird damage prevention device according to claim 1.

5. The bird damage prevention device according to claim 1, wherein at least one of the first extended portion and the second extended portion is reinforced by a rod-shaped member having higher strength than the first extended portion and the second extended portion.

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