JP2003250426A - Apparatus for preventing birds from coming flying - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for preventing birds from coming flying, which is a simple apparatus, has a wide action range and produce secure effect. <P>SOLUTION: The apparatus for preventing birds from coming flying has constitution that a plurality of magnets (1) rotatably attached to supporting shafts (2) are radially fixed to a revolving shaft (3) and the revolving shaft (3) is rotated by a driving force (4). <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to birds, especially crows,
The present invention relates to a dove flying prevention device.

[0002]

2. Description of the Related Art Pollution such as birds, especially crows and pigeons flying and scattering dung has recently been highlighted as a serious problem in many urban areas. This pollution problem has not always occurred recently, but since the severity of the problem has become more serious in recent years, various measures have been studied to prevent it, and Various devices have been proposed.

It has been conventionally known that birds fly by sensing or utilizing the earth's magnetic field, and it is often attempted to use their properties to prevent the arrival of birds by using magnets. However, it is becoming clear that the mere use of a magnet does not have a great effect.

It is also known that birds dislike strong light, especially flash. However, the effect will not last at least with just a strong light or flash. According to the knowledge of the inventor,
By moving the magnet at a speed higher than a certain level, for example, rotating the magnet about the rotation axis, the reach of the magnetic flux is expanded by about three times as compared with the state in which the magnet is stopped.

According to a further new finding of the present inventor, a normal earth magnetic field is about 0.2 Gauss on a flat land, but at least magnets are arranged by facing each other at a constant distance, for example, several meters. The magnetic flux density is 1 in the region between
It is about 0 to 15 times higher. The present invention was completed mainly based on the above findings.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a bird flying prevention device using a magnet, which is a simple device and has a wide operating range and can exhibit a reliable effect.

[0007]

In order to achieve the above object, the present invention provides a bird flying prevention device in which a magnet is attached to the tip of a support shaft of a fixed length so as to be rotatable about the axis of the support shaft. A plurality of radial attachments were made to the rotating shaft, and the rotating shaft was rotated by the drive source. The rotation speed of the rotary shaft depends on the length of the support shaft, but normally 2 to 6 times /
Minutes are enough. Rotating too fast reduces the effect. The support shaft is preferably flexible.

If two or more units of this device are arranged as a set at regular intervals, a higher effect of preventing flying can be obtained.
The magnet may have a plate shape, and may have an appropriate shape such as a triangular shape, a square shape, or a disc shape. The magnet preferably has front and back surfaces as magnetic poles, and at least one magnetic pole surface is mirror-finished. The effect of preventing birds from flying can be enhanced by making the mirror surface not a simple flat surface but an irregular uneven surface having a fine wave shape.

Although the bird flight prevention device of the present invention has sufficient effects by itself, it is clear from the above-mentioned new findings that even higher effects can be obtained by using two or more groups in combination. . Further, in order to obtain the effect based on the above new knowledge more efficiently, it is preferable that the magnet has at least 600 gausses or more, and particularly 2000 gausses or more. The bird flying prevention device of the present invention is used by placing it on the floor of a veranda or the like using a suitable base, or by fixing it to the handrail of the veranda, or on the partition wall of the garbage storage area using a suitable attachment. The base, attachments, etc. may be conventional ones.

[0010]

In the bird flying prevention device of the present invention, the reach of the magnetic flux lines of the magnet is expanded by rotating the magnet, and when two magnets are used side by side, the magnetic flux density of the earth's magnetic field is increased. The effect of preventing birds from coming in is synergistically enhanced.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail with reference to the drawings showing the embodiments of the present invention. FIG. 1 shows a bird flying prevention apparatus of the present invention, in which 1 is a magnet, 2 is a flexible support shaft, 3 is a rotation shaft, and 4 is a motor. Magnet 1 is a neodymium magnet, magnetic flux density is about 3000 gauss, thickness 1
It is a rectangular parallelepiped (square) having a length of 2 mm and a side of 55 mm. The support shaft 2 has a length of about 300 mm, and the magnet 1 is attached to one end of the support shaft 2 via a cover case 4 so as to be rotatable about the axis of the support shaft 2.

The support shaft 2 to which the magnet 1 is attached is a motor 4
Is fixed to the tip of the rotary shaft 3 substantially perpendicularly to the rotary shaft 3 and radially to the rotary shaft 3 at equal angular intervals. As shown in FIG. 3, the magnet 1 is housed in a cover case 5 made of a magnetic metal plate. Only one surface of the cover case 5 is provided with a window 6 of almost the entire size. The magnetic pole surface of is exposed. This cover case is mainly a means for attaching the magnet to the supporting rod, and the magnet may be attached directly to the supporting rod.

It is needless to say that this window is for exposing the mirror surface of the magnet described below when the cover case is provided. Besides, it is also for preventing the magnetic flux from being reduced by the cover case and for indicating the magnetic poles of the magnet. When the cover case is not used, the magnetic pole is directly displayed on the magnet.

The surface of the magnet 1 exposed from the window 6 is mirror-finished by polishing the magnet surface, and the mirror surface is not a simple flat surface but a fine irregular irregular surface having a wavelike shape.
In the bird flying prevention device of FIG. 1, the support shaft is all linear, but the support shaft is flexible and the magnet can rotate with respect to the support shaft. Therefore, the position and orientation of the magnet depend on the place of use. You can change it freely.

FIG. 2 shows an example of variations in the directions of the support shaft and the magnet. In this example, a part of the support shaft is bent to the motor side and a part of the support shaft is bent to the opposite side at a substantially right angle, and a part of the support shaft is kept straight, and the magnets are oriented symmetrically. FIG. 3 shows a state in which six bird flight prevention devices of the above-mentioned embodiment are radially fixed to a rotary shaft 8 rotated by a motor 7.

One of the apparatus of the embodiment shown in FIG. 2 was installed on the veranda, but before the installation, the pigeons that flew all day long were observed for almost a day during the daytime. As a result, the pigeons did not fly once. Further, two sets of these devices were set as a pair and installed at a space of about 3 m in a garbage storage in a box-shaped housing complex whose upper part was opened. Until then, the crows had come flying and had been ruined.After the installation, even if the trash was left open without netting, the crows did not fly and the rubbish was never injured in half a month. It was

[0017]

Since the bird flying prevention device of the present invention rotates the magnet, the reach of the magnetic flux lines is widened and a high bird flying preventing effect is obtained. In particular, the rotation is not performed uncertainly by the force outside the device, but is forcibly and always continuously performed at a constant speed by the drive source inside the device, so that a more effective bird flying prevention effect can be obtained. When two or more bird flight prevention devices of the present invention are used in a side-by-side relationship, the earth's magnetic field is enhanced and the effect is synergistically enhanced. Furthermore, the effect of preventing birds from flying is further enhanced by using a magnet whose magnetic pole surface is mirror-finished.

[Brief description of drawings]

FIG. 1 is a perspective view of a bird flying prevention device of the present invention.

FIG. 2 is a perspective view of a bird flying prevention device of the present invention.

FIG. 3 is a perspective view of a magnet portion of the bird flying prevention device.

[Explanation of symbols]

1 magnet 2 Support shaft 3 rotation axes 4 motor 5 cover case 6 windows

Claims (6)

[Claims] 1. A plurality of magnets are attached to a tip of a support shaft of a fixed length so as to be rotatable about the axis of the support shaft, and a plurality of magnets are radially attached to the rotary shaft, and the rotary shaft is rotated by a drive source. Bird flying prevention device. 2. The bird flying prevention device according to claim 1, wherein the support shaft is flexible. 3. A bird flying prevention device in which two or more devices according to claim 1 or 2 are set as one set and are arranged at a constant interval. 4. The bird flying prevention device according to claim 1, 2 or 3, wherein the magnet is a plate-shaped magnet. 5. The bird flying prevention apparatus according to claim 4, wherein at least one magnetic pole surface of the magnet is mirror-finished. 6. The bird flying prevention apparatus according to claim 5, wherein the mirror surface of the magnet is a fine wavelike irregular surface.