Bird repellent device

Abstract

To provide a bird repellent device that can effectively repel and drive away crows with a low-cost configuration and can exhibit the repellent effect over a long period of time. 【Solution means】A long support member 2 having flexibility and twistable about the axial direction J, and a film member 3 fixed to the support member 2 and having a plurality of plate bodies 3A, 3B arranged in a direction orthogonal to the longitudinal direction of the support member 2. When the support member 2 is twisted about the axial direction J, the film member 3 is twisted together with the support member 2, so that the plurality of plate bodies 3A, 3B can be developed in a spiral shape centered on the support member 2. The bird repellent device 1, and the support member 2 includes a return prevention body 20 that holds the state in which the plurality of plate bodies 3A, 3B are developed in a spiral shape by holding the state in which the support member 2 is twisted.

Description

Technical Field

[0001] The present invention relates to a pest bird repellent device, and more particularly to a pest bird repellent device for repelling pest birds that widely inhabit areas from residential areas to farmlands, such as crows.

Background Art

[0002] In recent years, for example, due to the influence of excessive packaging of goods and food loss, the amount of garbage has been increasing in various regions in Japan. Along with this, pest birds and beasts have invaded garbage collection sites and the like, causing problems such as scavenging for garbage as food and scattering it around. In particular, crows, which are omnivorous pest birds, penetrate garbage collection sites installed in residential areas and other places by bypassing various defense measures from the air, make holes in garbage bags, fish for human garbage as food, and then scatter the garbage around, which has become a major social problem. In addition, because crows have a very strong territorial awareness, they may attack humans passing near their nests. Especially during the season of raising chicks, etc., they can be a dangerous existence for humans in some cases.

[0003] Crows have extremely high visual ability compared to other pest birds, such as sparrows, starlings, and blackbirds, and their ability is also superior compared to humans. Specifically, crows can distinguish 14 colors of iridescence and have a visual ability to distinguish 4 primary colors including ultraviolet light, which is more than the 3 primary colors that humans can distinguish. Furthermore, since crows simply have 5 times the visual acuity of humans, they have the ability to easily grasp the garbage accumulation situation at garbage collection sites even when flying in the air at a location separated from the garbage collection site.

[0004] For the purpose of repelling crows attempting to invade garbage collection sites and the like as described above, various methods have been proposed that take advantage of the fact that crows have extremely excellent visual ability. For example, a bird damage prevention film is proposed in which a metal vapor deposition layer having a hologram formation surface and a colored layer having a colored transparent printing layer on the hologram formation surface of the metal vapor deposition layer are provided on one surface of a base material, the colored layer includes three-color strip-shaped colored transparent printing layers of red, yellow, and green, and each colored transparent printing layer is repeatedly arranged (see, for example, Patent Document 1). According to the bird damage prevention film described in Patent Document 1, since it includes three-color strip-shaped colored transparent printing layers of red, yellow, and green as the colored layer and these colored transparent printing layers are repeatedly provided, it appears as if a more beetle-like gloss pattern is expressed, so the effect of repelling crows and the like is said to be improved.

[0005] In addition, a bird damage prevention tool is proposed in which a large number of linear bodies made of weft threads protrude from both side ends of a tape-shaped support woven using warp threads on the weft threads onto an extension surface of the tape-shaped surface, and are configured to be orthogonal to the longitudinal direction of the support (see, for example, Patent Document 2). According to the bird damage prevention tool described in Patent Document 2, since a large number of linear bodies protrude from both side ends of the support and sway under the influence of wind, crows and the like with excellent visual ability cannot approach, and even if they approach without noticing the linear bodies, once their bodies touch the large number of linear bodies, they will not approach again. Further, Patent Document 2 also describes that by curling the support in the longitudinal direction and, accordingly, protruding a large number of linear bodies in all directions around the bird prevention tool, it is possible to deal with pest birds such as crows approaching from any direction.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0007] However, the bird damage prevention film described in Patent Document 1 has a configuration in which only a glossy pattern is expressed on the surface. Since crows are said to have very high intelligence, they will quickly get used to the color, and there is a problem that it is difficult to maintain the repellent effect over a long period of time.

[0008] In addition, the bird damage prevention tool described in Patent Document 2 has a configuration in which the wire body is composed of weft yarns such as monofilaments and tags, and it is simply intended to stimulate the vision of crows only by the action of swaying. Therefore, like the above, there is a problem that highly intelligent crows will quickly get used to it. Further, in the bird damage prevention tool of Patent Document 2, when the support body is curled to project a large number of wire bodies in all directions around, although a certain repellent effect against crows can be obtained, due to external factors such as being exposed to strong winds and a large force being applied to the support body and the wire bodies, there is a risk that the shape and posture will become unstable, such as a large number of wire bodies returning to a flat state. In such a case, since a large number of wire bodies do not project in all directions around the bird damage prevention tool, the repellent effect against crows is significantly reduced, and like the above, there is a problem that it is difficult to maintain the repellent effect over a long period of time.

[0009] The present invention has been made in view of the above problems, and an object thereof is to provide a bird repellent tool that can effectively repel harmful birds with an inexpensive configuration and can obtain a repellent effect over a long period of time.

Means for Solving the Problems

[0010] To solve the above problems, the present inventors have conducted intensive studies. As a result, by providing a support member that can be twisted around the axial direction and a film member that is attached to the support member and has a plurality of plate bodies that can be spirally deployed, the light refracted at the tip surfaces and side cross-sections of the plurality of plate bodies is diffusely reflected, and the frequency of the light changes each time depending on the irradiation angle and the observation angle, so it has been found that crows cause visual illusions. Furthermore, it has been found that by including a return prevention body that holds the support member in a twisted state, the support member can be held in a stable twisted shape. Along with this, since the state in which the plurality of plate bodies are spirally deployed is maintained, it has been found that the repellent effect on pest birds is enhanced and the effect is maintained over a long period of time, and the present invention has been completed.

[0011] That is, the present invention provides a pest bird repellent tool comprising a flexible, long support member that can be twisted around the axial direction, and a film member fixed to the support member and having a plurality of plate bodies arranged in a direction orthogonal to the longitudinal direction of the support member. When the support member is twisted around the axial direction, the film member is twisted together with the support member, so that the plurality of plate bodies can be spirally deployed around the support member. The support member includes a return prevention body that holds the state in which the support member is twisted, thereby holding the state in which the plurality of plate bodies are spirally deployed.

[0012] In the above configuration, the film member of the present invention may be provided such that at least a part of the film substrate is incised so that the plurality of plate bodies are formed.

[0013] In the above configuration, the present invention may adopt a configuration in which the film member has a multilayer thin film structure that changes the color of light irradiated from the outside onto the surface of the film member according to at least one of the actions of reflection, refraction, interference, and dispersion, depending on the irradiation angle of the light with respect to the surface or the observation angle with respect to the surface.

[0014] In the above configuration, the film member may be made of a translucent material or a transparent material.

[0015] In the above configuration, the anti-return body in the support member may be composed of metal, resin, or one or more reinforcing core materials including both of them.

[0016] In the above configuration, the support member may be a vinyl tie composed of the anti-return body and a vinyl material covering the anti-return body.

[0017] In the above configuration, the present invention may further adopt a configuration including a suspension tool attached to one end side of the support member for suspending and supporting the pest bird repellent tool.

Effects of the Invention

[0018] According to the pest bird repellent tool of the present invention, it includes a support member that can be twisted and bent around the axial direction, and a film member attached to the support member and having a plurality of plate bodies that can be spirally deployed, and the support member adopts a configuration including an anti-return body that holds the twisted and bent state. As described above, by providing a film member having a plurality of plate bodies that can be spirally deployed, the light refracted at the tip surfaces and the cross-sections of the side ends of the plurality of plate bodies is diffusely reflected, and the frequency of the light changes each time according to the irradiation angle and the observation angle. Therefore, every time a crow approaches the pest bird repellent tool, a visual disorder occurs. As a result, the crow will continue to avoid the pest bird repellent tool without getting used to it in a short period of time, so the avoidance and repulsion effects will continue for a long time. In addition, by providing a support member provided with an anti-return body and maintaining the twisted and bent state of the support member, for example, even when a large force is applied to the support member and the plurality of plate bodies by being exposed to strong winds or the like, it is possible to prevent the shape and posture from becoming unstable, and the plurality of plate bodies can be stably held in a state where they are spirally deployed without returning to a flat state. Therefore, it is possible to effectively repel pest birds with an inexpensive configuration and to exhibit the repellent effect over a long period of time.

[0019] Other objects, features, and advantages of the present invention will become apparent from the following description of embodiments of the present invention with reference to the accompanying drawings.

Brief Description of the Drawings

[0020]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Embodiments for Carrying Out the Invention

[0021] Hereinafter, embodiments of the bird repellent device according to the present invention will be given and described in detail with appropriate reference to FIGS. 1 to 8. Note that, in each of the drawings used in the following description, for the sake of clarity in showing the features of the bird repellent device of the present invention, the characteristic portions may be shown enlarged somewhat for convenience, and the dimensional ratios and the like of each component may be different from the actual ones. Also, the materials, dimensions, etc. exemplified in the following description are merely examples, and the present invention is not limited thereto, and it is possible to make appropriate changes and implement within the range not changing the gist thereof.

[0022] FIG. 1 is a perspective view showing the overall configuration of the bird repellent device 1 of the present embodiment. FIG. 2 is a front view showing a state in which a plurality of plate bodies 3A and 3B included in the film member 3 are spirally unfolded by twisting the support member 2 of the bird repellent device 1 shown in FIG. 1. FIGS. 3 and 4 are partially enlarged views showing the bird repellent device 1 shown in FIG. 2 from an obliquely upper direction. FIG. 5 is a partially enlarged view showing a plurality of plate bodies 3A and 3B included in the film member 3 provided in the bird repellent device 1 shown in FIG. 2. FIG. 6 is a partially enlarged view showing the suspension tool 4 provided in the bird repellent device 1 shown in FIG. 2. FIG. 7(a) is a plan view showing a vinyl tie, which is an example of the support member 2 provided in the bird repellent device 1, and FIG. 7(b) is a plan view showing a state in which the vinyl tie, which is an example of the support member 2 shown in FIG. 7(a), is twisted about the axial direction J. FIG. 8 is a partially enlarged view showing a state in which the central region 31 of the film member 3 provided in the bird repellent device 1 is fixed to a vinyl tie, which is an example of the support member 2, by a zigzag stitch with a thread 7.

[0023] The bird repellent device 1 of this embodiment can be installed in a suspended state on a metal fitting or the like, for example, around a garbage collection area in a residential area or a factory site, on the veranda of an apartment or a detached house, or on a cart used at a golf course, so as to repel and drive away harmful birds. In addition, as the harmful birds for which the repellent effect by the bird repellent device 1 of this embodiment can be obtained, crows, which are representative of harmful birds and particularly excellent in visual ability, can be mentioned.

[0024] As shown in FIGS. 1 and 2 and the like, the bird repellent device 1 of this embodiment includes a support member 2 and a film member 3. The bird repellent device 1 in the illustrated example further includes a suspension tool 4 attached to one end 2a side of the support member 2. The bird repellent device 1 in the state shown in FIG. 1 is configured such that the film member 3 attached to the support member 2 is generally flat in overall outline. On the other hand, in the state of the bird repellent device 1 shown in FIG. 2, the support member 2 is twisted and bent around the axial direction J, and the film member 3 is also twisted and bent together with the support member 2, so that a plurality of plate bodies 3A, 3B provided on the film member 3 are configured to be developed in a spiral shape around the support member 2. And the bird repellent device 1 of this embodiment is configured such that the support member 2 includes a return prevention body 20, and by holding the support member 2 in a twisted state without returning from the twisted state to the initial state, a state in which a plurality of plate bodies 3A, 3B are developed in a spiral shape is maintained (see also FIGS. 3 and 4).

[0025] The support member 2 supports the entire bird repellent device 1 so as to maintain a generally flat outer shape as shown in FIG. 1 or a spiral outer shape as shown in FIG. 2. The support member 2 is made of a flexible material and is composed of a long member that can be twisted around the axial direction J. The support member 2 is composed of, for example, a vinyl tie composed of a return prevention body 20 and a vinyl material 21 covering the return prevention body 20, as detailed in FIGS. 7(a) and 7(b).

[0026] The support member 2 is not limited to the configuration made of a vinyl tape as shown in the illustrated example. For example, as long as the return prevention body 20 is made of a configuration including one or more reinforcing core materials made of metal or resin, or both, any configuration can be adopted. Also, the metal material or resin material used for the reinforcing core material forming the return prevention body 20 is not particularly limited, and any material may be used as long as it has the strength to maintain the state in which the support member 2 is twisted and bent, and a bending strength that is difficult to break, the details of which will be described later. Examples of the metal material used for the return prevention body 20 include metal wires made of iron cores (wires), etc. Examples of the resin material used for the return prevention body 20 include resin wires made of polyethylene terephthalate, etc.

[0027] Also, the length and width of the support member 2 are not particularly limited, and can be appropriately designed while considering the size of the entire bird repellent device 1, and can be determined while considering the dimensions of the film member 3, the details of which will be described later. Specifically, for example, when the length of the film member 3 described later (the length in the direction along the length direction of the support member 2) is 140 mm, considering ensuring the mounting area of the suspension tool 4 described later, etc., the length of the support member 2 can be set to about 160 mm, which is slightly longer than the film member 3. Also, when the width of the film member 3 is 80 mm, considering ensuring the strength for supporting this film member 3, etc., the width of the support member 2 can be set to about 4 mm. Also, the thickness of the support member 2 is not particularly limited, and can be appropriately determined while considering the strength as a support member, etc.

[0028] The film member 3 exhibits an effect of repelling and driving away particularly crows, etc. by exerting an action of giving a visual stimulus to the harmful birds in the bird repellent device 1. The film member 3 is fixed to the support member 2 and has a plurality of plate bodies 3A, 3B arranged in a direction orthogonal to the longitudinal direction of the support member 2. The film member 3 illustrated in FIGS. 1 and 2 etc. has the plurality of plate bodies 3A, 3B formed in a substantially long and narrow plate shape so that at least a part of the film base 30 is incised. Further, in the film member 3, a central region 31 near the center in the direction orthogonal to the length direction of the support member 2 in the film base 30 is a mounting region for the support member 2, and a plurality of plate bodies 3A, 3B are arranged in large numbers so as to extend from the central region 31 over the entire length of the film member 3.

[0029] The film member 3 is fixed at the position of the central region 31 described above to the long support member 2. In the example shown in FIG. 8, the central region 31 of the film member 3 is fixed to the vinyl tie constituting the support member 2 by a zigzag stitch with a thread 7. In the illustrated example, only one side of the film member 3 is fixed to the support member 2, but it is not limited thereto. For example, it is more preferable from the viewpoints that the fixing strength between the support member 2 and the film member 3 is enhanced and the appearance is also beautiful to adopt a configuration in which the vinyl tie constituting the support member 2 is folded in two and the film member 3 is arranged so as to be sandwiched from both sides, and on each of both sides of the film member 3, it is fixed to the support member 2 by a zigzag stitch with a thread 7.

[0030] The film base 30 used for the film member 3 is not particularly limited. For example, it is preferable to adopt a film material having a multilayer thin film structure capable of exhibiting at least any one of the actions of reflection, refraction, interference, and dispersion for light irradiated from the outside to the surface 3a of the film member 3. By adopting a film material having a multilayer thin film structure for the film member 3 (film base 30), the color can be changed according to the irradiation angle of light with respect to the surface 3a or the observation angle with respect to the surface 3a. Thereby, since crows, which are particularly excellent in visual ability, have a sense of vigilance against the pest repellent tool 1, it becomes possible to repel and drive away crows.

[0031] Furthermore, it is more preferable to use a film material made of a translucent material or a transparent material for the film substrate 30. Since the film substrate 30 has translucent or transparent light transmission characteristics, the above-described color change can be obtained more remarkably than in the case of using an opaque material.

[0032] Examples of the film material having the multilayer thin film structure as described above include those generally called aurora films. The aurora film is made of, for example, polyvinyl chloride or the like, and is a film material capable of changing color according to the above-described light irradiation angle, observation angle, or weather, etc. due to the action of reflection, refraction, interference, or dispersion (dispersion prism effect) obtained in a multilayer thin film structure (see the partial enlarged view of FIG. 5).

[0033] More specifically, the aurora film exhibits various actions as described above by having a multilayer thin film structure of, for example, 120 to 150 layers or more. Further, the aurora film has an action of coloring only when there is an external light source such as sunlight or various lighting devices. Due to the above-described configuration and action, the aurora film can produce various colors such as blue, purple, red, pink, green, gold, or champagne according to the above-described light irradiation angle and observation angle.

[0034] Since the aurora film has high infrared cut efficiency, it also has an action of effectively blocking or reflecting infrared rays. In addition, since the aurora film does not use a metal material, it does not cause radio wave interference that affects, for example, an ETC (Electronic Toll Collection System) for automobiles or an in-vehicle navigation system. Furthermore, the aurora film has a great merit in that it is superior in designability compared to various other film materials.

[0035] When the film member 3 is viewed in plan view, the overall size, that is, the size in the flat plate state before the plurality of plate bodies 3A and 3B are spirally twisted, is not particularly limited. For example, it may be appropriately designed in consideration of visibility from crows and the like. From such a viewpoint, the plan view size of the film member 3 can be, for example, in the range of a width dimension of 40 to 120 mm and a length dimension of 70 to 200 mm when the bird repellent tool 1 is installed near a garbage collection site or the like, and generally, it can be about 80 mm in width dimension × 140 mm in length dimension.

[0036] The thickness of the film member 3, that is, the thickness of the film substrate 30 constituting the film member 3 is also not particularly limited. Considering the strength when exposed to strong winds outdoors, for example, it can be in the range of 0.2 to 0.8 mm, and a film material of about 0.4 mm can generally be used.

[0037] The width dimensions of the plurality of plate bodies 3A and 3B in the film member 3 are also not particularly limited. Considering the effective manifestation of the action of the refracted light being diffusely reflected in the cross sections of the tip surfaces and side ends of the plurality of plate bodies 3A and 3B as described later, it may be appropriately designed and processed. From such a viewpoint, it is preferable to adjust the cutting width so that the width dimensions of the plurality of plate bodies 3A and 3B are in the range of 0.8 to 1.5 mm, more preferably about 1 mm.

[0038] In addition, in the film member 3 of the illustrated example, the plurality of plate bodies 3A and 3B are densely provided without any space between each other and the adjacent other plate bodies, but it is not limited thereto. For example, a configuration in which each of the plurality of plate bodies 3A and 3B is provided at an appropriate interval may be adopted.

[0039] As described above, by adopting an aurora film as the film substrate 30 constituting the film member 3, it becomes possible to confuse the vision of crows. Specifically, as described above, crows have a visual ability to distinguish 14 colors in total for iridescence and to distinguish four primary colors including ultraviolet light, and further have a visual acuity five times that of humans. On the one hand, in the bird repellent device 1 of this embodiment, a plurality of plate bodies 3A and 3B in the film member 3 are formed such that a part of the film substrate 30 made of aurora film is incised. When light in the ultraviolet wavelength range is irradiated on the tip surface or the cross-section of the side end of the plurality of plate bodies 3A and 3B, the light is diffusely reflected by a dispersion action similar to the prism phenomenon, and the frequency changes. As a result, crows having sensitive visual ability lose their sense of direction when approaching the bird repellent device 1 and move away from the spot. In addition, when the diffusely reflected light emitted from the film member 3 enters the vision of the crow due to the above action, the crow becomes confused, so the crow avoids the very fact of putting the bird repellent device 1 into its vision. Therefore, the crow moves away while seeing the bird repellent device 1 in the distance and avoiding it.

[0040] Here, in the case of a bird repellent device conventionally used for crow countermeasures, since a configuration using reflected light from a flat film member was mainstream, for crows, which are said to have excellent visual ability and high intelligence, the visual confusion was small, and they would get used to it quickly, and there was a problem that the repellent effect lasted only for a short period (see Patent Document 1 above). Also, for example, conventionally, an attempt has been made to sustain the visual confusion effect on crows by curling a large number of linear bodies made of weft yarns such as monofilaments provided in a flat shape, but it was difficult to maintain the curled shape, and it would return to a flat shape in a short period, and ultimately, there was a problem that the repellent effect lasted only for a short period (see Patent Document 2 above).

[0041] On the other hand, according to the bird repellent device 1 of the present embodiment, by adopting the above configuration, not only the surface 3a which is the flat surface of the film member 3, but also the front end surfaces and the cross-sections of the side ends of the plurality of plate bodies 3A and 3B exhibit the action of diffuse reflection of the refracted light. Thus, in addition to the surface 3a of the film member 3, the frequency of the light diffusely reflected at the front end surfaces and the cross-sections of the side ends of the plurality of plate bodies 3A and 3B also changes each time according to the irradiation angle and the observation angle of the light. Therefore, the crow experiences visual confusion each time it approaches the bird repellent device 1. For this reason, the crow will continue to avoid the bird repellent device 1 without getting used to it in a short period of time. As a result, the effect of repelling and driving away the crow continues over a long period of time.

[0042] And the bird repellent device 1 of the present embodiment has a configuration in which the support member 2 includes a return prevention body 20. Different from the conventional bird repellent device, since the plurality of plate bodies 3A and 3B of the film member 3 are held in a state of being spirally deployed, the effect of repelling and driving away the crow continues over an even longer period of time.

[0043] Also, according to the bird repellent device 1 of the present embodiment, even when exposed to strong winds, since the plurality of plate bodies 3A and 3B of the film member 3 are held in a state of being spirally deployed, when the wind is blowing, the plurality of plate bodies 3A and 3B in the deployed state will flutter greatly. In this way, as the plurality of plate bodies 3A and 3B flutter in the wind, the frequency of the light diffusely reflected at the front end surfaces and the cross-sections of the side ends of the plurality of plate bodies 3A and 3B also changes each time. Therefore, the visual confusion of the crow becomes even greater. As a result, the effect of repelling and driving away the crow can be obtained more remarkably.

[0044] As shown in the examples shown in FIGS. 1, 2, 4, and 6, in the bird repellent device 1, a configuration may be adopted in which a suspension tool 4 is attached to one end 2a side of the support member 2. The suspension tool 4 in the illustrated example is composed of a double ring 5 attached to one end 2a of the support member 2 and a nose can 6 attached to the double ring 5.

[0045] The double ring 5 is a ring-shaped member formed by double winding a wire-shaped wire. In the example shown in Fig. 6, by turning one end 2a side of the support member 2, the double ring 5 is attached so as to engage with this portion. The double ring 5 is not particularly limited, and a configuration in which a wire made of iron is wound can be appropriately adopted in consideration of the size balance and the like in the bird repellent tool 1.

[0046] The nascan 6 is composed of a ring-shaped lower can 61, an upper hook 63 with a hook portion 63a that can be opened and closed and can be hung at a desired location, and a rotating can 62 that rotatably connects between the lower can 61 and the upper hook 63, and is a member generally called a key holder.

[0047] The lower can 61 is a member attached to the double ring 5. The lower can 61 can be attached so as to be movable along the double ring 5, for example, by separating any end of the wire forming the double ring 5 from the adjacent wire and rotating the double ring 5 while entering this gap. As described above, the upper hook 63 has a hook portion 63a that can be hooked on a fitting (not shown) and is a member that enables the bird repellent tool 1 to be suspended at a desired location. The rotating can 62 rotatably connects between the lower can 61 and the upper hook 63 and is composed of, for example, a shaft (not shown).

[0048] The material of each member constituting the nascan 6 is not particularly limited, but for example, iron or stainless steel can be used. Further, when iron is used for the nascan 6, for example, it can be configured to be nickel-plated, which is excellent in terms of decorativeness and surface protection.

[0049] By including the suspension tool 4 as described above, the bird repellent tool 1 of this embodiment can be suspended and supported on various metal fittings, drying poles, etc. (not shown) at or around various locations where the installation of the bird repellent tool 1 is required, and can be flexibly installed in a suspended posture.

[0050] In this embodiment, a keyholder-shaped suspension tool 4 is exemplified and described as a member for suspending and supporting the bird repellent tool 1 at a predetermined location, but it is not limited thereto. For example, a thread, a rubber band, a wire, etc. (not shown) may be connected to one end 2a of the support member 2, and these may be tied to a suspension fitting or the like, and a configuration in which the bird repellent tool 1 is suspended and supported may be adopted. Alternatively, for example, it is also possible to adopt a configuration in which the suspension tool is omitted to form the bird repellent tool, and the upper end side of the support member is suspended from a suspension fitting or the like.

[0051] <Function and effect> As described above, according to the bird repellent tool 1 of this embodiment, it includes a support member 2 that can be twisted and bent around the axial direction J, and a film member 3 that is attached to the support member 2 and has a plurality of plate bodies 3A, 3B that can be spirally deployed, and the support member 2 adopts a configuration including a return prevention body 20 that holds the twisted and bent state. By providing the film member 3 having a plurality of plate bodies 3A, 3B that can be spirally deployed as described above, the light refracted at the tip surfaces and the cross-sections of the side ends of the plurality of plate bodies 3A, 3B is diffusely reflected, and the frequency of the light changes each time depending on the irradiation angle and the observation angle. Therefore, every time a crow approaches the bird repellent tool 1, a visual illusion occurs. As a result, the crow will continue to avoid the bird repellent tool 1 without getting used to it in a short period of time, so the avoidance and repulsion effects will continue for a long time. Further, it includes a support member 2 provided with a return prevention body 20. By maintaining the twisted state of the support member 2, for example, even when a large force is applied to the support member 2 and the plurality of plate bodies 3A and 3B due to exposure to strong winds or the like, it is possible to prevent the shape and posture from becoming unstable. That is, even when exposed to strong winds or the like, the plurality of plate bodies 3A and 3B are stably held in a state where they are unfolded in a spiral shape without returning to a flat state. Therefore, it is possible to effectively repel and drive away crows with an inexpensive configuration, and it is possible to exhibit the repellent effect over a long period of time.

[0052] <Modification example of the present invention> In the above, the embodiments of the present invention have been described in detail. However, the bird repellent device of the present invention is not limited to the above embodiments, and various changes and modifications can be made and implemented without departing from the principle of the present invention and the scope of the appended claims.

[0053] For example, in the above embodiment, a configuration in which the plurality of plate bodies 3A and 3B in the film member 3 are unfolded in a spiral shape by twisting the support member 2 has been described. However, the bird repellent device of the present invention can also be used in a flat plate shape as shown in FIG. 1 while considering the environment and conditions of the installation location. Even when the bird repellent device according to the present invention is used in a flat plate shape, a certain effect of repelling and driving away crows can be obtained. However, by unfolding the plurality of plate bodies 3A and 3B of the film member 3 in a spiral shape and using them, a remarkable effect of effectively repelling and driving away crows can be obtained.

[0054] The bird repellent device according to the present invention can be used after the user purchases the bird repellent device 1 and twists the support member 2 by himself / herself to put the plurality of plate bodies 3A and 3B in the film member 3 in a spirally unfolded state. Alternatively, in the manufacturing process, the plurality of plate bodies 3A and 3B of the film member 3 may be processed into a spirally unfolded state, and the bird repellent device 1 may be shipped as a product in this state. On the other hand, when the bird repellent device 1 is shipped in a flat plate shape and the user who purchases it twists the support member 2 by himself / herself for use, it is more preferable in terms of improving space efficiency in the distribution process and store display.

[0055] In addition, in this embodiment, an example in which the bird repellent device 1 is installed at or around a garbage collection site is described, but it is not limited thereto. The bird repellent device 1 may be used, for example, by hanging the bird repellent device 1 with a drying pole, a hanger, a suspension fitting, or a bolt on the veranda of an apartment or a detached house. Alternatively, the bird repellent device 1 can also be used by hanging it on a cart used at a golf course, a utility pole or a tower, or a suspension tool installed on a fruit-bearing tree or a field, etc., and can exhibit its repellent and repelling effect in any place and scene where crows are expected to fly.

[0056] In addition, by hanging the bird repellent device 1 on, for example, a bag, a backpack, especially a backpack, it is also possible to protect the user, a child, from damages such as the flying of crows above the head and being pecked by the beak. Thus, when the bird repellent device 1 is used by hanging it on a bag, a backpack, etc., the plan view size of the film member 3 may be in the range of a width dimension of 30 to 50 mm × a length dimension of 60 to 80 mm, and generally, it may be about a width dimension of 40 mm × a length dimension of 75 mm. That is, it is preferable from the viewpoints of appearance and the like, and also from the viewpoint that it is not caught by the bird repellent device 1 during walking, to configure the overall plan view size of the bird repellent device 1 including the support member 2 to be small, about a width dimension of 40 mm × a length dimension of 75 mm, in accordance with the size of a bag, a backpack, etc.

[0057] Further, the bird repellent device 1 of the present embodiment is not limited to a vertical installation form that is suspended vertically downward as shown in FIG. 2 and the like. For example, by preparing a stretching device (not shown), it is also possible to use it in an installation form stretched in a substantially horizontal direction.

Example

[0058] Hereinafter, examples of the bird repellent device of the present invention will be shown to more specifically explain the present invention. However, the configuration of the bird repellent device of the present invention is not limited by the specifications and conditions described in the following examples.

[0059] <Sample production conditions for evaluation test> In this example, under the conditions of using the commercially available members shown below, a bird repellent device 1 in which the film member 3 is flat as shown in FIG. 1 was produced. The size of the flat bird repellent device 1 was 170 mm in total length × 80 mm in width × 1.5 mm in thickness. Next, by twisting and bending the support member 2, a plurality of plate bodies 3A and 3B of the film member 3 were spirally unfolded to produce the bird repellent device 1 of this example as shown in FIG. 2.

[0060] (1) Support member 2 · Color tape gold (manufactured by Shimojima Co., Ltd.) Material: Polyethylene terephthalate (both coating material and core material) Color: Gold (2) Film member 3 · Aurora film (manufactured by Nippon Button Trading Co., Ltd.) Material: 100% PVC (polyvinyl chloride) (vinyl fabric) Film plane size: 80 mm in width × 140 mm in length × 0.4 mm in thickness (3) Thread 7 · Resilon thread (manufactured by Fujilock Co., Ltd.) Product number: Transparent No. 50 Material: 100% nylon (4) Suspension tool 4 · Double ring 5 (manufactured by Sannote Co., Ltd.) Inner diameter: 10 mm Material: 100% iron · Nascan 6 (manufactured by Tsuzumi Co., Ltd.: Plate Na 23 (Plate Nascan)) Size: Overall length 23 mm × Tail inner diameter 3.8 mm × Width 7.5 mm Material: Iron (nickel silver: nickel plating process)

[0061] <Evaluation test method> [Example 1] In Example 1, the bird repellent device 1 (sample) manufactured under the above conditions was installed at the in-company garbage collection site located within the premises of Kagaoya Shokai Co., Ltd. (applicant of this application: 6-10-8 Funabashi, Setagaya-ku, Tokyo), and an evaluation test on the repellent and repulsion effects on crows was conducted for one month.

[0062] The garbage collection site has a garbage storage space surrounded by concrete block walls on three sides and with the front side and the upper side, which are the garbage input ports, open. In addition, the garbage collection site is located in a place where it cannot be visually recognized from outside the applicant's premises. The evaluation test was conducted by the applicant (employee) transporting the household garbage brought to the entrance of the applicant's headquarters premises by neighboring residents within the premises and accumulating it at the garbage collection site. During the one-month test period, the accumulated garbage was collected twice a week, on Wednesdays and Saturdays, and sequentially replaced with newly generated household garbage.

[0063] Also, during the one-month test, a garbage scattering prevention net was placed at the garbage collection site to cover the accumulated garbage. The garbage scattering prevention net used in this example is a commercially available green net, and it was installed so as to cover the end part over the concrete block wall to cover the entire accumulated garbage.

[0064] Also, by engaging the upper hook 63 of Nascan 6 with the metal fitting of the pipe installed near the concrete block wall of the garbage collection site, the bird repellent device 1 was installed in a suspended support state. At this time, the bird repellent device 1 was placed at a position higher than the concrete block wall so that the bird repellent device 1 could be easily seen by crows.

[0065] And during the one-month test period, regarding the presence or absence of crows flying to the garbage collection site, every day, the garbage accumulated at the garbage collection site and the state of the garbage scattering prevention net arranged to cover the garbage were visually checked to confirm the presence or absence of garbage fishing or mischief by crows.

[0066] [Example 2] In Example 2, the bird repellent tool 1 (sample) manufactured under the above conditions was installed in the orchard within the training center (Kai Tsubame: 3713-19, Usami, Ito City, Shizuoka Prefecture) owned by Kaga-ya Shokai Co., Ltd. (same as above). Similar to the above, an evaluation test on the repellent and repelling effects of crows was carried out over a one-year period.

[0067] That is, for the trees (species: fig) planted in the above orchard, the bird repellent tool 1 was suspended and supported using wire or the like. At this time, the bird repellent tool 1 was arranged at a position where it would not be hidden by thick branches or leaves so that it could be easily seen by crows. Note that there are about 3 trees of the above species planted in the same orchard, and one bird repellent tool 1 was installed on each tree, and an evaluation test was carried out.

[0068] And during the one-year test period, once a month, the trees where the bird repellent tool 1 was installed were visually checked to confirm the presence or absence of food (fruits) fishing by crows and mischief on the branches and leaves. Also, between late August and mid-November when the figs of the fig trees bear fruit alternately, the same confirmation as above was carried out once a week. Furthermore, in this example, the one-year test under the above conditions was carried out twice (for a total of two years).

[0069] [Evaluation Test Results] As a result of the evaluation test at the garbage collection site as shown in Example 1, when visually checking the garbage accumulated at the garbage collection site and the state of the garbage scattering prevention net arranged to cover the garbage, no abnormalities (damage) considered to be caused by crows fishing for garbage or playing pranks were confirmed. The location where the evaluation test in Example 1 was conducted is an area with a dense residential area surrounding it and there are many crows gathering aiming at the food contained in the garbage. However, it was confirmed that by installing the bird repellent device of the present invention, crows can be effectively repelled and driven away over a long period of time. Also, when checking the state of the bird repellent device after one month, which is the test period, the film member 3 was maintained in a spirally deployed state without returning to a flat shape.

[0070] As a result of the evaluation test in the orchard as shown in Example 2, when checking the fruits and branches and leaves of the trees where the bird repellent device 1 was installed in the orchard, no abnormalities (damage) to the fruits and branches and leaves considered to be caused by crows fishing for food or playing pranks were confirmed. The location where the evaluation test in Example 2 was conducted is an area surrounded by tourist and resort areas, and there are also relatively many crows gathering aiming at the fruits growing on the trees. However, even in such a place, it was confirmed that by installing the bird repellent device of the present invention, crows can be effectively repelled and driven away over a long period of one year. Also, when checking the state of the bird repellent device after one year, which is the test period, as described above, the film member 3 was maintained in a spirally deployed state without returning to a flat shape.

[0071] Also, in both Example 1 and Example 2, no human damage caused by crows (for example, flying overhead or pecking with the beak) was confirmed around the installation location of the bird repellent device 1.

[0072] From the results of the above examples, it became clear that by installing the bird repellent device of the present invention, crows can be effectively repelled and driven away, and a repellent effect can be obtained over a long period of time.

Explanation of Reference Numerals

[0073] 1… Bird repellent device 2… Support member (vinyl tape) 2a… One end 20… Anti-return body 21… Vinyl material 3… Film member 3a… Surface 30… Film substrate 31… Central region 3A, 3B… Multiple plate bodies 4… Suspension tool 5… Double ring 6… Nascan 61… Lower can 62… Rotating can 63… Upper hook 63a… Hook part 7… Thread J… Axial direction

Claims

1. A long support member that is flexible and can be twisted around an axial direction; a film member having a plurality of plates fixed to the support member and arranged in a direction perpendicular to the longitudinal direction of the support member; When the support member is twisted around the axial direction, the film member is twisted together with the support member, so that the plurality of plate bodies can be deployed in a spiral shape around the support member. The bird repellent device according to claim 1, wherein the support member includes a return prevention member that maintains the support member in a twisted state, thereby maintaining the plurality of plates in the spirally expanded state.

2. 2. The bird repellent according to claim 1, wherein the film member is provided such that the plurality of plates are provided so as to cut at least a portion of a film base.

3. The bird repellent device according to claim 1 or claim 2, characterized in that the film member has a multilayer thin film structure that changes the color of light irradiated from outside onto the surface of the film member through at least one of the following actions: reflection, refraction, interference, and dispersion, depending on the angle of irradiation of the light with respect to the surface or the observation angle with respect to the surface.

4. 4. The bird repellent according to claim 3, wherein the film member is made of a translucent or transparent material.

5. 3. The bird repellent according to claim 1, wherein the support member includes a reinforcing core material including one or more reinforcing materials, the reinforcing core material including metal, resin, or both.

6. 3. The bird repellent according to claim 1, wherein the support member is a vinyl tie made up of the return prevention body and a vinyl material covering the return prevention body.

7. 3. The bird repellent according to claim 1, further comprising a suspender attached to one end of the support member for suspending the bird repellent.

Images