JP2001120155A - Bird-expellant tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bird-expellant tool capable of expelling injurious birds, such as pigeons, crows and starlings, which come flying in large numbers to ruin plowed fields and bring houses, factories, etc., droppings to damage them. SOLUTION: This bird-expellant tool comprises a reflective disk which generates moire brought about by the reflected light on the disk surface and is supported so as to freely rotate. The reflective disk may be supported in the following manners: the disk is hung with a hanging string; the disk is supported on a semicircular support frame with a diagonal axis so as to freely rotate and the support frame is further supported on a shaft so that the support frame is freely rotate to change a direction of the diagonal axis; and the disk is supported on a circular support frame with a diagonal axis so as to freely rotate, the circular support frame is further supported on the semicircular support frame with another diagonal axis so that the circular frame is freely rotate to change a direction of the diagonal axis, and the semicircular support frame is furthermore supported on a shaft so that the semicircular frame is freely rotate to change a direction of the another diagonal axis of the circular support frame. Further the bird-expellant tool may be composed of plural support boards which are supported in radial directions with a support shaft, wherein the support shaft is hung with a hanging member so as to freely rotate, and each of the supporting boards is equipped with the reflective disk so as to freely rotate. Furthermore the bird- expellant tool may comprise a composite reflective disk composed of two reflective disks which are together combined on a symmetric axis thereof to perpendicularly cross over each other.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bird-tracking device for removing harmful birds, such as pigeons, crows, and barn birds, which fly in large numbers and destroy fields or cause dung to houses and factories. .

[0002]

2. Description of the Related Art Conventionally, sparrow damage in paddy fields and the like,
Dung damage in houses and factories has become a problem. In order to prevent such bird harm, various bird chasing devices have been proposed. For example, there are those using dolls imitating humans and natural enemies, eagle and hawk, those that emit voices and explosive sounds intermittently, those that emit light, ultrasonic waves, and magnetism.

[0003] Among them, those using dolls and sounds have a problem that birds can become their shapes and sounds over time, and the bird following effect is reduced. In addition, devices using light, ultrasonic waves, and magnetism have a relatively large size and require cost.

Under such circumstances, the present inventor has repeated experiments focusing on light reflection, and as a result, as compared with mere reflection of light by a mirror, for example, a concentric circle is regularly formed on a board such as a compact disk. By using a moiré (striped spots due to the interference of light) with a line-like shape,
We confirmed the fact that birds can be effectively driven over a wide area. This is because moiré shines iridescent and reflects light of multiple wavelengths irregularly,
It is considered that the irregularly reflected light stimulates the bird's sight to cause discomfort.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a device for effectively repelling birds by using a reflector which generates moire based on the above experimental results.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a means for constructing a bird chasing device by rotatably supporting a reflecting plate which causes moire on the surface of a reflected light. Adopted.

At this time, means for suspending the reflector with a suspending string is employed.

Further, there is provided a means for rotatably supporting the reflector on a semi-circular support frame via an oblique axis, and rotatably supporting the support frame by a shaft rod while changing the axial direction. Adopted.

Further, the reflector is rotatably supported on a circular support frame via an oblique axis, and the circular support frame is changed in axial direction to form a semicircular support frame on an oblique axis. A means of rotatably supporting the body, and further rotatably supporting a semi-circular arc-shaped support frame with a shaft rod while changing the axial direction is adopted.

[0010] In addition, a plurality of support plates are attached in the radial direction of a support shaft rotatably supported by hanging metal fittings, and a reflector is rotatably attached to each support plate to constitute a bird tracking device. did.

In each of the bird-tracking devices, a means is employed in which the reflector is a composite reflector in which two reflectors are joined so as to intersect at right angles with each other with respect to the axis of symmetry.

In the bird-following device having the above-described structure, the reflecting disk rotates to reflect the moire-like reflected light over the entire circumference, and repels a bird who dislikes the reflected light.

In this case, when the reflector is suspended, the reflector swings or rotates due to the wind to reflect the reflected light all around.

In addition, the reflector is rotatably supported on a semi-circular support frame or a circular support frame, and is further rotatably supported by a shaft rod, whereby a two-axis or three-axis rotary shaft is provided. Act in a complex manner, the reflected light from the reflector changes extremely complicatedly, and the bird repelling effect is increased.

Further, in the case where a reflector is mounted on a support plate and a plurality of support plates are mounted in a radial direction of the support shaft, the reflector plate itself rotates and the support shaft also rotates to generate complicated reflected light. It creates and repels birds.

Furthermore, if the reflector is a composite reflector, the reflected light becomes even more complicated and birds can be repelled.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Some preferred embodiments of a bird pursuit according to the present invention will be described below with reference to the drawings. FIG. 1 shows the most basic embodiment of the bird-tracking device of the present invention. In FIG. 1, reference numeral 1 denotes a reflector, in which concentric circles are regularly and regularly geometrically arranged on a board whose one or both sides are mirror-finished. It is distributed so that moire (striped mottle) is generated by light interference.
As an existing one, for example, a compact disc (C
Although optical disks such as D) and a laser disk (LD) are typical, the present invention is not limited to these. Irregular reflection of light causes moire composed of a plurality of colors such as rainbow colors. What is necessary is just such. Further, the outer shape is not limited to the disk shape but may be a rectangle or a polygon.
Next, reference numeral 2 denotes a suspension string attached to the edge of the reflector 1.
The reflector is suspended at an arbitrary location so that the reflector can freely swing or rotate by wind or the like.

In the bird-tracking device having the above-described structure, the reflecting plate 1 is freely swung or rotated by wind or the like to generate a moire-shaped light beam.
Reflects irregularly in every direction at 60 degrees. Therefore,
Birds having such a property that hates reflected light do not approach the periphery of the present apparatus, and can prevent crops, buildings, and the like from bird damage over a wide area.

The number of reflectors is not limited to one. If a plurality of reflectors are suspended and installed in a vertical direction or in a horizontal direction, the moire reflected light becomes more complicated. The synergistic effect can be expected to increase the repelling action of birds.

The reflector 1 may be rotatably supported by an appropriate support member in addition to being suspended by the suspending string 2 as described above. For example, in FIG.
Reference numeral 3 denotes a semi-circular support frame, which is supported by a shaft 4 in the middle of the frame. The shaft 4 is configured to rotate around the axis together with the support frame 3 by an appropriate drive source (not shown) such as a motor. The reflector 1 is rotatably supported in the diameter direction of the support frame 3 by an oblique shaft 5 obliquely intersecting the rotation axis of the shaft 4.
Therefore, the reflector 1 rotates around the axis of the shaft bar 4 while rotating around the axis of the oblique axis 5. for that reason,
With these two axes, the moire-like reflected light is reflected in all directions very irregularly, and can repel birds.

FIG. 3 shows an additional supporting frame.
The semi-circular support frame 3 supported by the rotatable shaft bar 4 rotatably supports the circular support frame 6 on an oblique shaft 5. The circular support frame 6 rotatably supports the reflector 1 with an oblique axis 7 obliquely intersecting both the rod axis 4 and the oblique axis 5. Therefore, the reflector 1 rotates around the axis of the oblique axis 5 together with the circular support frame 6 while rotating about the axis of the oblique axis 7, and simultaneously rotates around the axis of the shaft 4. That is, the reflector 1 has a complicated movement due to the complex operation of the three rotation axes, and the moire-like reflected light is also irregularly reflected in all directions, so that the bird is reliably repelled over a wide range. You can.

FIG. 4 shows an enlarged reflection area of the reflector. Two reflectors which generate moire-like reflected light are joined so as to cross each other at right angles on the central axis (symmetric axis). To form a composite reflector 8. The composite reflector 8 is rotatably supported by the rod 4 along the central axis. This composite reflector reflects the sunlight in a moiré shape and reflects the reflected light on another surface to generate more complicated reflected light, so that a great repelling effect for birds can be expected.

FIG. 5 shows still another embodiment.
In the drawing, reference numeral 9 denotes a support shaft to which support plates 10, 10,... Are attached in radial directions (four directions crossing each other at right angles in the figure). Each of the support plates 10 is provided with a reflection plate 1, 1,... Reference numeral 12 denotes a hanging bracket for rotatably supporting the support shaft 9. This may be a suspension string as shown in FIG. In this bird chase device, when suspended in an appropriate place, each reflector 1 rotates around the axis 11 by wind and emits moire-like reflected light in all directions, but at the same time, each support plate 10 also supports the support shaft 9. Rotate around. Therefore, a complex reflected light is reflected in all directions by the synergistic action, and the bird can be driven away.

In the above configuration, the reflector 1 is connected to the support plate 10.
Although the reflector 1 is simply fixedly mounted on a support plate, or the support plate itself is configured as a reflector, each support plate 10 rotates around the support shaft 9. Therefore, moire-like reflected light can be reflected in all circumferential directions.

Further, through each of the above embodiments, the reflector 1
It is needless to say that the same or higher effects can be expected even when the composite reflector 8 shown in FIG.

[0026]

According to the bird chasing apparatus having the above structure, the reflector can effectively repel birds by reflecting moire-like reflected light which the bird dislikes.

In this case, when the reflector is suspended by the suspension string, the reflector swings or rotates due to the wind and is reflected in all circumferential directions, so that birds can be repelled over a wide range.

Further, in the case where the reflector is rotatably supported by a shaft bar, a semi-circular support frame, and a circular support frame having different axial directions, the reflector has two axes or three axes. By rotating about the axis, the reflected light changes extremely complicatedly, and the bird following effect is greatly increased.

In the case where a plurality of support plates are attached in the radial direction of the support shaft, and a reflector is rotatably attached to each support plate, the reflector itself rotates and simultaneously the support shaft also rotates, resulting in complicated reflection. It creates light and can repel birds widely.

Further, in the case where the reflectors are joined at right angles to each other to form a composite reflector, the moire-like reflected light is further irregularly reflected to generate extremely complicated reflected light, and a great bird-tracking effect can be expected. In this embodiment, if the reflector is a composite reflector, a greater bird-tracking effect can be expected.

In each of the bird-following devices, since the reflectors reflect the moire-like reflected light irregularly, the birds do not become light and the repelling effect does not decrease. Since it is only rotatably supported, for example, if a disc to be discarded is used, it can be manufactured at extremely low cost.
Economic effects can also be expected.

[Brief description of the drawings]

FIG. 1 is a front view showing an example of an embodiment of a bird-tracking device according to the present invention.

FIG. 2 is a front view showing another embodiment of the bird chase device.

FIG. 3 is a front view showing another embodiment of the bird chase device.

FIG. 4 is a perspective view showing an example of a composite reflector.

FIG. 5 is a perspective view showing another embodiment of the bird chase device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Reflector 2 Suspension cord 3 Support frame (semicircular shape) 4 Shaft 5 Oblique axis 6 Support frame (circle) 7 Oblique axis 8 Composite reflector 9 Support axis 10 Support plate 11 Axis

Claims (6)

[Claims] 1. A bird chasing device characterized by rotatably supporting a reflecting plate on which reflected light causes moire on the surface of the plate. 2. The bird chasing device according to claim 1, wherein the reflector is suspended by a suspension string. 3. The reflector is rotatably supported by a semi-circular support frame via an oblique axis, and the support frame is rotatably supported by a shaft rod with its axial direction changed. The bird chasing device as described. 4. A reflector frame is rotatably supported on a circular support frame via a diagonal axis, and the circular support frame is changed in axial direction to form a semicircular support frame with a diagonal axis. 2. The bird chasing device according to claim 1, wherein the bird support device is rotatably supported by the body, and furthermore, the semi-circular support frame is rotatably supported by a shaft rod while changing the axial direction. 5. A bird-following device in which a plurality of support plates are mounted in a radial direction of a support shaft rotatably supported by a hanging bracket, and a reflector is rotatably mounted on each support plate. 6. The bird tracking device according to claim 1, wherein the reflector is a composite reflector in which two reflectors are joined so as to intersect at right angles to each other with a symmetric axis.