JPH0838022A - Bird flight prevention device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a bird flying prevention device that further enhances the bird flying prevention effect by generating turbulence of a magnetic field that is rich in changes in all directions regardless of the wind direction. [Structure] The bird flying prevention device 1 includes an arm 5 attached to the upper end of a column 3 via bearings, two rotors 7 attached to the left and right ends of the arm 5 via bearings, and to each rotor 7. The attached magnets 9 and the blade-shaped portions 11 formed on both ends of each rotor 7.
It has and. When the blades 11 at both ends of the rotor 7 receive wind, both the arm 5 and the rotor 7 simultaneously
Rotates randomly while changing the rotation speed and rotation direction. As a result, the magnet 9 moves in irregular directions in a three-dimensional and complicated locus in all directions, the magnetic field around the device fluctuates drastically, and a high effect of preventing flying of birds is exhibited.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for preventing birds from flying by forming a disordered magnetic field different from the magnetic field of the earth by a magnet.

[0002]

2. Description of the Related Art Conventionally, it has been said from the results of various experiments that birds are capable of sensing the magnetic field of the earth. Paying attention to the ability of birds like this, in Sankaihei 4-28080,
There is disclosed a bird flying prevention device which prevents birds from flying by forming a disordered magnetic field different from the magnetic field of the earth. This bird flying prevention device has a propeller with a magnet that rotates in the wind in the front part and a main body with vertical wings fixed in the rear part, rotatably attached to the upper end of the column, and the magnet rotates and moves with the propeller due to the wind force. By doing so, a disordered magnetic field different from the magnetic field of the earth was generated around it to prevent birds from flying.

[0003]

However, according to the above-mentioned prior art, the vertical blades are provided at the rear part to rotate the propeller by making the most of the wind force, and the propeller always faces the windward. Therefore, if such a bird flight prevention device is installed in a place where there is almost no change in wind direction, the propeller will always face a specific direction that is windward, and the magnet will only rotate in a specific plane. Therefore, it was not possible to cause the turbulence of the magnetic field, which was rich in variation, to the entire circumference of the installation site.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a bird-flying prevention device that produces a highly variable magnetic field turbulence in all directions regardless of the wind direction and further enhances the bird-flying prevention effect.

[0005]

In order to achieve the above-mentioned object, the present invention forms a disordered magnetic field different from the magnetic field of the earth around the magnet by irregularly displacing magnets as described in claim 1. In a bird flying prevention device for preventing birds from flying, a main rotating member attached to the base and rotatable about a predetermined axis with respect to the base, and attached to the main rotating member, the main rotating member. With respect to the predetermined axis, a sub-rotating member rotatable about another axis oriented in a different direction from the predetermined axis,
It is characterized by comprising the magnet attached to the sub-rotating member, and a rotational force applying means for simultaneously rotating both the main rotating member and the sub-rotating member.

The bird flying prevention device according to claim 2 is the bird flying prevention device according to claim 1, characterized in that a plurality of the sub-rotating members are attached to the main rotating member.

According to a third aspect of the present invention, there is provided the bird flying prevention device according to the second aspect, wherein the rotating force applying means is formed on the sub-rotating member and receives the wind to generate the wind force. At the same time as rotating the sub-rotation member, the wind receiving portion is characterized by rotating the main rotation member by the force transmitted to the main rotation member via the sub-rotation member.

As for the shape of the wind receiving portion, various shapes are conceivable in which a rotational movement can be obtained by receiving the flow of gas. For example, it is adopted in a wind turbine, a propeller, a turbine, an anemometer or the like. Anything will do. Furthermore, the bird flying prevention device according to claim 4 is the bird flying prevention device according to claim 3, wherein an arm extending rotatably attached to the upper end of the upright pillar is rotatably mounted on the pillar. , On the left and right ends of the arm,
Two rotors each rotatably attached to the arm, a magnet attached to each of the two rotors, and two rotors formed on each of the two rotors. And a blade-shaped portion that also rotates the arm by a force transmitted to the arm via the rotor at the same time.

[0009]

According to the bird flying prevention device of the present invention, both the main rotating member and the sub rotating member are simultaneously rotated by the force applied from the rotating force applying means. At this time, the main rotating member rotates about a predetermined axis with respect to the base portion, and the sub rotating member rotates about another axis that faces a direction different from the predetermined axis with respect to the main rotating member. The magnet attached to the member moves in a three-dimensional and complicated trajectory while being oriented in all directions. Therefore, as compared with the case where the magnet is simply rotated in the plane, the surrounding magnetic field fluctuates more complicatedly, and the disturbed magnetic field can give the bird more dislike.

According to the bird flying prevention device of the second aspect, since the magnets attached to the plurality of sub-rotating members move in three-dimensional and complicated loci, the surrounding magnetic field is generated. The effect of disturbing is even higher. Further, according to the bird flying prevention device of the third aspect, when the wind is received by the wind receiving portion formed in the auxiliary rotating member, the auxiliary rotating member is rotated by the wind force. At this time, the force that each sub-rotation member receives from the wind differs depending on the axial direction of the sub-rotation member. Therefore, the force transmitted from each sub rotary member to the main rotary member is different, and the main rotary member also rotates in either direction depending on the balance. Then, the direction of the axis of the sub-rotating member changes momentarily with the rotation of the main rotating member. Therefore, the force that each sub-rotation member receives from the wind fluctuates, and the sub-rotation member irregularly changes the rotation speed and the rotation direction. Further, as the force received by each sub-rotating member from the wind changes, the balance of the force transmitted from each sub-rotating member to the main rotating member also changes, so that the main rotating member also randomly changes the rotation speed and the rotating direction. . As a result, the magnet moves in a very irregular and three-dimensional trajectory to disturb the surrounding magnetic field.

In addition to the structure described in claim 3, a method is conceivable in which a rotating force is simultaneously applied to both the main rotating member and the sub rotating member by wind force to move the magnet in a three-dimensional locus. For example, if the wind receiving portions are provided on both the main rotating member and the sub rotating member, both can be configured to receive the force directly from the wind and rotate simultaneously. In this case, since a rotational force is generated in the main rotating member itself, the sub-rotating member only needs to be rotatable, and its shape, mounting position, quantity, etc. can be set more freely than when the main rotating member is also rotated. The degree increases. So, for example,
Even if only one sub rotary member is attached,
Both can be rotated at the same time.

Further, according to the bird flying prevention apparatus of the fourth aspect, the two rotors are rotated by the wind force received by the blade-shaped portion. At this time, the rotors at the left and right ends face in diametrically opposite directions, so the forces received from the wind are different. Therefore, the force transmitted from each rotor to the arm is different, and the arm also rotates in either direction depending on the balance. Since the directions of both rotors change every moment as the arm rotates, the force received by the rotors from the wind fluctuates, and the rotors randomly change the rotation speed and the rotation direction. Further, as the force received by the rotors from the wind fluctuates, the balance of the forces transmitted from the rotors to the arms also fluctuates, so that the arms also randomly change the rotation speed and the rotation direction. As a result, the magnet moves in a very irregular and three-dimensional trajectory while being oriented in all directions. As a result, the surrounding magnetic field fluctuates extremely complicatedly, and birds can be disliked by the disturbed magnetic field.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. As shown in FIG. 1, the bird flight prevention device 1 as an embodiment has an arm 5 attached to the upper end of a column 3 via bearings, and two rotors attached to the left and right ends of the arm 5 via bearings, respectively. 7 and four magnets 9 attached to each of the two rotors 7, and vane-shaped portions 11 formed at both ends of each of the two rotors 7.

Of these structures, the arm 5 is in the shape of a round bar, and is attached vertically to the support 3 at the center thereof, and can be either forward or reverse with the center line (Y-Y line in the drawing) of the support 3 as an axis. Is also rotatable. Also two rotors 7
Also, as shown in the drawing, each of them is attached perpendicularly to the arm 5, and can be rotated in both forward and reverse directions about the center line (X-X line in the drawing) of the arm 5. In addition, the rotor 7 is integrally formed with a dish-shaped portion 7a at four positions spaced a predetermined distance from the axis, and a magnet 9 is bonded to the dish-shaped portion 7a.

A pair of blade-shaped portions 11 formed at both ends of the rotor 7 are formed 180 degrees rotationally symmetrical to each other, and each of them has a center line (X- in the figure) of the arm 5 as shown in FIG.
The rotor 7 has a predetermined inclination with respect to the X-ray and receives the wind flowing in the direction of the center line of the arm 5 on the inclined surface, and applies a rotational force to the rotor 7.

Next, the operation of the bird flying prevention device 1 of this embodiment will be described. Bird flying prevention device 1 of this embodiment
First, use the thread groove 13 and nut 15 formed at the lower end of the support column 3 at an appropriate position such as a power transmission tower arm bar suspension, a power transmission tower tower body, a substation beam, or a distribution pole arm. Attached directly or via a suitable fixture.

Then, in the attached state, the rotor 7
When the blades 11 at both ends receive wind, the rotor 7 is rotated by wind force. At this time, the force received by the rotor 7 from the wind is slightly different depending on the direction in which the rotors 7 face, so that a difference occurs in the force exerted by the rotors 7 on the arms 5, and the arms 5 also rotate due to the balance. The direction of the rotor 7 changes with the rotation of the arm 5, and the force that each rotor 7 receives from the wind also changes. As a result, the rotor 7 randomly changes the rotation speed and the rotation direction. Also,
By varying the force that each rotor 7 receives from the wind,
Since the balance of the force applied from each rotor 7 to the arm 5 also varies, the arm 5 also irregularly changes the rotation speed and the rotation direction. As a result, the magnet 9 moves in a very irregular three-dimensional and complicated trajectory while facing in all directions, and the surrounding magnetic field becomes a very disturbed magnetic field which is completely different from the magnetic field of the earth.

Therefore, birds (such as crows and pigeons) that do not like such a magnetic field will not approach the vicinity of this device, and nesting of birds in the power transmission tower or distribution pole can be prevented. Particularly, according to the bird flying prevention device 1 of the present embodiment, even if the device is installed in a place where the wind blows only from a certain direction, two axes (X-X line and YY line in the drawing) are provided.
Due to the rotation around, the magnet 9 moves in a very irregular three-dimensional and complicated trajectory while facing in all directions, the magnetic field around the device fluctuates drastically, and the effect of preventing flying of birds is extremely high. high.

Although the embodiment of the present invention has been described above, the present invention is not limited to this, and various embodiments can be adopted without departing from the scope of the present invention. For example, in the embodiment, the rotors 7 are provided at both ends of one rod-shaped arm 5, but as shown in FIG. 3A, the arms 21 are provided in multiple directions (four directions in the figure) around the rotation axis. By extending and providing the rotors 23 respectively, a larger number of magnets 25 can be moved in a complicated manner, and a corresponding effect can be obtained.

As shown in FIG. 3B, the arm 2
If the bowl-shaped wind receiving portion 29 for rotating 7 itself is provided, even one rotor 31 is sufficient to rotate the arm 27 and the rotor 31 at the same time, and even in this case, the magnet 33 is extremely irregular. Since it moves in a three-dimensional and complicated trajectory, it is more effective at preventing flying birds than conventional ones.

Further, in the embodiment, the description has been made assuming that the support column 3 is fixed, but if the magnet is moved around two or more axes as the center of rotation, for example, the support column 3 is also rotated. Can be moved automatically. In addition,
In order to rotate the arm and the rotor, it is possible to rotate the arm and the rotor by another power source such as electric power instead of the wind power. However, considering the cost of manufacturing and maintenance, the advantage of rotating with wind power is great.

In addition, although the embodiment has been described with reference to an example of installation on a power transmission tower, etc., the installation place is set at any place such as a farmland or roof of a building or rooftop where it is desired to prevent birds from flying. It is possible.

[0023]

As described above, according to the bird flying prevention apparatus of the present invention, the magnet moves in a three-dimensional and complicated locus while facing in all directions, so that even if the wind direction is constant, the apparatus can be used. The magnetic field around the fluctuates drastically, and the effect of preventing flying of birds is extremely high.

According to the bird flying prevention device of the second aspect, since the magnets attached to the plurality of sub-rotating members move in three-dimensional and complicated loci, they disturb the surrounding magnetic field. The effect is even higher. Further, according to the bird flying prevention device of the third aspect, both the main rotating member and the auxiliary rotating member change the rotation speed and the rotating direction extremely irregularly by the wind force, so that the surrounding magnetic field is even more irregular. It becomes a disorderly way, and the effect of preventing flying of birds is enhanced.

In addition, according to the bird flying prevention device of the fourth aspect, the bird flying preventing device of the present invention can be configured without excessively increasing the number of parts, and the bird flying preventing effect can be sufficiently obtained.

[Brief description of drawings]

FIG. 1 is a front view of a bird flight prevention device as an example.

FIG. 2 is an end view of a cut portion in a cut surface indicated by a line AA in FIG.

FIG. 3 shows a bird flight prevention device as a modified example,
(A) is a plan view of a first modified example, and (b) is a plan view of a second modified example.

[Explanation of symbols]

1 ... Bird flying prevention device, 3 ... Struts, 5 ... Arm, 7 ... Rotor, 9 ... Magnet, 11 ... Wing portion.

Claims (4)

[Claims] 1. A bird flying prevention device for preventing birds from flying by forming a disordered magnetic field different from the earth's magnetic field around the magnet by means of irregularly displacing magnets. On the other hand, a main rotating member that is rotatable around a predetermined axis, and a sub-rotary member that is attached to the main rotating member and is rotatable around another axis that is different from the predetermined axis with respect to the main rotating member. A bird flying prevention device comprising: a member, the magnet attached to the sub-rotating member, and a rotational force applying unit that simultaneously rotates both the main rotating member and the sub-rotating member. 2. The bird flying prevention device according to claim 1, wherein a plurality of the sub rotating members are attached to the main rotating member. 3. The bird flying prevention apparatus according to claim 2, wherein the rotational force imparting means is formed on the sub-rotating member and receives the wind to rotate the sub-rotating member by the wind force of the sub-rotating member. A bird flying prevention device, which is a wind receiver that also rotates the main rotating member by a force transmitted to the main rotating member via the rotating member. 4. The bird flying prevention apparatus according to claim 3, wherein substantially vertically extending arms rotatably attached to the upright columns are attached to the upper ends of the upright columns, and left and right ends of the arms are provided. Two rotors each rotatably attached to the arm, the magnets attached to each of the two rotors, and each rotor formed on each of the two rotors. And a blade-like portion that rotates the arm at the same time as the arm is rotated by a force transmitted to the arm via the rotor.