Waterborne repelling device for bird and animal damage control

Abstract

To provide a waterborne repelling device for bird and animal damage control that can freely move on water and continuously and effectively repel harmful birds, harmful animals and the like in a water area and around the water area, thereby satisfactorily preventing damage to agricultural and marine products caused by harmful birds and animals.SOLUTION: The device includes: a waterborne moving body 12 having a propulsion device 18; and a laser light rotating irradiation device 14 that is attached to the waterborne moving body 12 and irradiates laser light while rotating around a vertical axis Z, the laser light being emitted in a horizontal direction or laterally at a predetermined angle with respect to the horizontal direction. The laser light rotating irradiation device 14 may include an irradiation angle changing mechanism 30 configured to allow a change in an irradiation angle of the laser light with respect to the horizontal direction.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a water-based bird and animal pest control device that is effective in repelling harmful birds and animals from land such as fields, or from water areas such as rivers, irrigation channels, lakes and marshes, or from areas around water areas. [Background technology]

[0002] While Japan's cultivated land area is decreasing, the overall area of ​​damage caused by wild birds and animals has not changed significantly from year to year, suggesting that the proportion of affected areas is increasing. Annual damage to crops exceeds 17 billion yen, necessitating necessary measures. In addition to damage caused by deer, wild boars, crows, monkeys, and other animals, damage caused by ducks is also serious, with numerous cases of crop damage due to their nocturnal behavior. Ducks come to Japan in groups to spend the winter, but their habit of flying into fields and feeding at night when agricultural work is not being done is challenging to address. Furthermore, in recent years, ducks have been flying in in groups not only to fields but also to sports grounds and stadiums, causing damage to natural turf and contamination of fields and spectator stands with their droppings, making the expansion of duck damage a major social issue.

[0003] In response to these problems, the present applicant has proposed a bird and animal repellent device capable of preventing bird and animal damage over a wide area with a simple configuration and short operation time in Patent Document 1. The bird and animal repellent device in Patent Document 1 includes a laser light oscillator, a plate-shaped laser beam forming means that passes the laser light emitted from the oscillator as a plate-shaped laser beam through a slit hole that is long in one direction, and an external rotating reflecting mirror unit that is located externally near the back side of the slit hole after the laser beam has passed through the slit hole and rotates integrally with a rotating shaft that is installed along the longitudinal direction of the slit hole to reflect the plate-shaped laser beam that has passed through the slit hole, and is capable of emitting a planar laser beam toward a target area to repel harmful birds and animals from a field. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2023-37885 Summary of the Invention [Problem to be solved by the invention]

[0005] The bird and animal repellent device of Patent Document 1 is installed on land, such as in fields, and is highly effective against ducks that fly into fields, etc., and is effectively used to drive them away from fields, etc. However, because ducks are waterfowl, they often stay in groups for long periods of time in bodies of water, such as irrigation channels and ponds near fields. They often check the condition of the field from the water, and wait until workers have left before flying into the field and damaging crops. Birds like ducks are particularly troublesome because they can fly, swim, and walk on land, and have diverse behavioral patterns and a wide range of movement. Therefore, depending on their characteristics, it is effective to take measures to prevent duck damage over a wide area, including not only land areas such as fields, but also water areas such as irrigation channels and ponds around the land. Furthermore, damage caused by ducks is not limited to land such as fields and rice paddies; they also cause damage to marine products such as seaweed and clams cultivated in rivers and the sea, making measures to combat duck damage in and around water areas an urgent issue.

[0006] In response to the above-mentioned problems, the present invention aims to provide an aquatic bird and animal pest control device that can move freely on the water while continuously and effectively repelling harmful birds and animals in and around water areas, and that can effectively prevent damage to agricultural and marine products, etc., from harmful birds and animals. [Means for solving the problem]

[0007] In order to solve the above problems, the present invention comprises an aquatic bird and animal damage control device that comprises an aquatic vehicle having a propulsion device, and a laser light rotary irradiation device that is attached to the aquatic vehicle and irradiates laser light horizontally or laterally at a predetermined angle while rotating and irradiating it around a vertical axis.

[0008] The laser beam rotary irradiation device may also include a laser beam transmitter, a rotation mechanism capable of rotating and irradiating the laser beam emitted from the laser beam transmitter around a vertical axis, and an irradiation angle change mechanism that is provided to change the irradiation angle of the laser beam relative to the horizontal direction.

[0009] The irradiation angle changing mechanism may also have a speed interlocking means that can change the irradiation angle of the laser light relative to the horizontal direction in accordance with the rotation speed of the rotation mechanism.

[0010] The speed linking means may also have a rocking body that rotates about a vertical axis via a rotation mechanism and is freely swingable about a horizontal axis, a weight attached to the rocking body so as to tilt the rocking body at a predetermined swing angle, and an irradiation unit that changes the irradiation angle of the laser light in accordance with the swing of the rocking body about the horizontal axis and irradiates it.

[0011] Furthermore, the irradiation unit may have a mirror unit fixed to the oscillator so as to change the angle of the mirror surface in response to the oscillatory movement of the oscillator, and the laser light transmitter may be installed on the body of the water vehicle so as to irradiate laser light toward the mirror unit.

[0012] The rotation mechanism may also have a hollow motor with a hollow rotating shaft, and be installed so that the mirror surface of a mirror portion fixed to an oscillator connected to the hollow motor faces the hollow space of the hollow motor, and the laser light transmitter may be installed so that laser light passes through the hollow space of the hollow motor and is irradiated onto the mirror portion.

[0013] The propulsion device of the water vehicle may also have a plurality of propulsion units attached so that the propulsion direction can be changed independently of each other.

[0014] In addition, the water vehicle may have a body portion shaped like a cylinder that is circular in plan view, with multiple floats attached to the circumferential surface of the trunk of the body portion, and multiple propellers provided on the underside of the body portion. [Effects of the Invention]

[0015] The water-based bird and animal damage prevention device of the present invention is configured to include a water-based vehicle having a propulsion system and a laser beam rotary projection device attached to the water-based vehicle, which projects a laser beam horizontally or laterally at a predetermined angle while rotating around a vertical axis, so that the device can physically intimidate birds and animals while freely navigating the water, and also intimidate them with the laser beam by rotating the laser beam, thereby efficiently and reliably repelling harmful birds and animals on the water and around water areas.As a result, the device can be used effectively to prevent bird and animal damage in a wide range of situations, such as irrigation channels near rice fields, and on water or around water areas such as rivers, lakes, and oceans.

[0016] In addition, the laser light rotary irradiation device is configured to have a laser light transmitter, a rotation mechanism that can rotate and irradiate the laser light emitted from the laser light transmitter around a vertical axis, and an irradiation angle change mechanism that is capable of changing the irradiation angle of the laser light relative to the horizontal direction, so that it can efficiently irradiate a wide area on the water with laser light and effectively scare away birds and animals.

[0017] Furthermore, the irradiation angle change mechanism is configured to have a speed linkage means that can change the irradiation angle of the laser light relative to the horizontal direction in accordance with the rotation speed of the rotation mechanism, so that the irradiation angle of the laser light can be changed by controlling the rotation speed of the rotation mechanism.This means that the irradiation angle change mechanism has a simple structure with a small number of parts, and the controls for angle change can be easily designed, allowing for low-cost manufacturing.

[0018] Furthermore, the speed interlocking means has a rocker that rotates about its vertical axis via a rotation mechanism and is swingable about its horizontal axis, a cone attached to the rocker so as to tilt the rocker at a predetermined swing angle, and an irradiation unit that changes the irradiation angle of the laser light in accordance with the rocking of the rocker about its horizontal axis and irradiates the laser light, thereby making it possible to relatively easily change the irradiation angle of the laser light by utilizing changes in the balance between the rocker and the cone depending on the magnitude of the centrifugal force generated in accordance with the rotation speed. Thus, an illumination angle changing mechanism having a speed interlocking means can be specifically realized with a simple configuration.

[0019] Furthermore, the irradiation unit has a mirror unit fixed to the oscillating body so as to change the angle of the mirror surface in response to the oscillating movement of the oscillating body, and the laser light transmitter is installed on the body of the water vehicle so as to irradiate laser light toward the mirror unit.This makes it possible to make the rotating and oscillating body relatively lightweight, while reliably and efficiently rotating and irradiating the laser light while changing the irradiation angle.

[0020] In addition, the rotation mechanism has a hollow motor with a hollow rotating shaft, and is installed so that the mirror surface of a mirror section fixed to an oscillator connected to the hollow motor faces the hollow space of the hollow motor.Furthermore, the laser light transmitter is installed so that laser light passes through the hollow space of the hollow motor and is irradiated onto the mirror section.By configuring this, the laser light rotary irradiation device can be installed efficiently and compactly in the limited space of the water-borne vehicle with a relatively simple configuration.

[0021] Furthermore, by configuring the propulsion device of the surface vehicle to have multiple propulsion devices that can be attached so that the propulsion direction can be changed independently of each other, the propulsion of the surface vehicle can be moved freely in any direction of 360 degrees, and the surface vehicle can be turned while maintaining a fixed position on the water, thereby improving usability.

[0022] In addition, the body of the water vehicle is cylindrical in shape when viewed from above, with multiple floats attached to the periphery of the trunk of the body and multiple propellers on the underside of the body. This allows the water vehicle to be stabilized on the water, allows for stable irradiation of laser light, and makes it less likely that the water vehicle or propeller will be damaged even if it collides with obstacles such as the walls of an irrigation canal or rocks. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a front view of a water-based bird and animal pest control device according to one embodiment of the present invention. FIG. [Figure 2] FIG. 2 is a side view of the water-based bird and animal damage prevention device of FIG. 1. [Figure 3] FIG. 2 is a bottom view of the water-based bird and animal pest control device of FIG. 1. [Figure 4] 2 is an explanatory longitudinal cross-sectional view of an enlarged view of a laser beam rotary irradiation device of the water-based bird and animal damage prevention device of FIG. 1. [Figure 5] 2 is an exploded explanatory view of a laser beam rotary irradiation device of the bird and animal damage countermeasure water-based repelling device of FIG. 1. [Figure 6] 2 is a diagram illustrating the operation of the laser beam rotary irradiation device of the bird and animal damage countermeasure water-based repelling device of FIG. 1. [Figure 7] 2 is a schematic block diagram of the water-based bird and animal damage prevention device of FIG. 1. [Figure 8] 1. FIG. 4 is a schematic diagram and an explanatory diagram of the operation of another example of a laser beam rotary irradiation device in the water-based bird and animal damage control device of FIG. [Figure 9] 1. FIG. 4 is a bottom view illustrating another example of the propulsion device of the water-based bird and animal damage prevention device of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0024] An embodiment of the water-based bird and animal pest control device of the present invention will be described below with reference to the accompanying drawings. The water-based bird and animal pest control device of the present invention is a bird and animal pest control device for installation on water that is placed on water such as a river, lake, sea, irrigation channel, reservoir, dam, etc., and moves freely on the water while scaring off harmful birds and animals on the water or around the water area with laser light or the like, thereby protecting agricultural and marine products from damage caused by harmful birds and the like.

[0025] 1 to 7 show one embodiment of the water-based bird and animal pest control device of the present invention. As shown in Figures 1, 2, and 3, the water-based bird and animal pest control device 10 of this embodiment includes an on-water vehicle 12 and a laser beam rotary irradiation device 14.

[0026] The surface vehicle 12 has a body 16, which is the main body of the surface vehicle, and a propulsion device 18 for navigating the water. The surface vehicle 12 is a water-borne vehicle that can freely navigate the water while floating on the water like a ship. In this embodiment, as shown in FIGS. 1, 2, and 3, the surface vehicle 12 has a body 16 that is, for example, circular in plan view and cylindrical with both upper and lower end faces closed. The body 16 is formed, for example, from a water-resistant metal or the like, and has a short-axis cylindrical shape designed with a relatively low height and width compared to the diameter of the circular shape in plan view, forming a hollow enclosed space inside. The top side of the body 16 is a removable lid, allowing the body 16 to be opened and closed. The enclosed space inside the body 16 houses devices for driving and controlling the surface vehicle 12 and the propulsion device 18, as well as components and control devices of the laser beam rotary irradiation device 14. For example, as shown in the schematic block diagram of Figure 7, the body portion 16 houses a battery 80 that supplies power to each component such as the laser beam rotary irradiation device 14, a control unit 90 that controls each component, and the like.

[0027] Four arc-shaped floats 20 are attached to the circumferential side of the body 16 at a position slightly below the upper end, with gaps between them in the circumferential direction. The floats 20 are made of, for example, a foamed resin material that can generate buoyancy, and are attached in a balanced manner around the surface vehicle 12, thereby improving stability on the water. Furthermore, the floats 20 also function as buffer material for the surface vehicle 12, preventing damage to the body 16 and other parts due to collision with obstacles such as rocks or the walls of a waterway while traveling on the water. The shape and number of floats 20 may be arbitrary.

[0028] In this embodiment, the propulsion device 18 of the surface vehicle 12 is installed on the underside of the cylindrical body 16. The propulsion device 18 has two propulsors 22A and 22B, each consisting of an electric thruster powered by a battery 80. Each of the propulsors 22A and 22B has a rotatable propeller mounted within a cylindrical pod, and the pod is attached to the underside of the body 16 so that its orientation can be freely changed 360 degrees around the vertical axis Y. That is, the propulsors 22A and 22B are attached so that the direction of the propeller, i.e., the direction of the thrust, can be freely changed 360 degrees, providing both a propulsion function and a direction-changing function. The two propulsors 22A and 22B are installed so that their propulsion direction can be changed independently. The orientations of the two propulsors 22A and 22B can be aligned or offset. As a result, the surface vehicle 12 can move freely in all directions on the water, including forward, backward, leftward, and rightward, and can also perform a variety of movements, such as rotating on its axis while remaining in a fixed position or moving on the water. The rotation speed and direction of the propellers of the propulsion units 22A, 22B are controlled, for example, via a control unit built into the body unit 16. In this embodiment, the control unit 90 is wirelessly connected to a communication network via the communication unit 62, and can be remotely controlled, for example, via a user's information terminal or the like.

[0029] Note that one or any number of three or more propellers may be attached. For example, FIG. 9(a) shows an example in which the propulsion unit 18 is attached with three propellers 22A, 22B, and 22C. The three propellers 22A, 22B, and 22C are arranged at approximately equal intervals so as to form the vertices of an equilateral triangle. FIG. 9(b) shows an example in which the propulsion unit 18 is attached with four propellers 22A, 22B, 22C, and 22D. The four propellers 22A, 22B, 22C, and 22D are arranged at approximately equal intervals so as to form the vertices of a square. Even in these cases, the propeller rotation speed (thrust force) and orientation (propulsion direction) of the multiple propellers may be controlled independently. Furthermore, in FIGS. 9(a) and 9(b), the multiple propellers are arranged at approximately equal intervals from each other, but this is not limiting and they may be attached at any position, such as at unequal intervals.

[0030] The water vehicle 12 may also be configured to change direction by, for example, providing a rudder for changing direction on the body or the like. The water vehicle 12 may also be configured to automatically patrol or move randomly on the water by, for example, a pre-stored program. The water vehicle 12 may also be moored with a rope or the like to prevent it from being swept away by water and lost.

[0031] 1 and 2, a stand 24 is fixed to the underside of the body 16 of the water vehicle 12. The stand 24 is formed, for example, in a U-shaped frame shape, and is installed so that the horizontal bar at the bottom of the U projects downward beyond the propellers 22A and 22B. The stand 24 allows the entire water-based bird and animal pest control repellent device 10 to be placed stably, for example, when it is pulled onto land or a recovery boat.

[0032] The laser beam rotary irradiator 14 is a laser beam rotary irradiator means that is attached to the water vehicle 12 and irradiates a bird and animal repelling laser beam horizontally or laterally at a predetermined angle while rotating around a vertical axis. In this embodiment, as shown in Figs. 4 and 5, the laser beam rotary irradiator 14 has a laser beam transmitter 26, a rotation mechanism 28, and an irradiation angle change mechanism 30. In this embodiment, as shown in Fig. 1, two laser beam rotary irradiators 14 are installed at a predetermined interval on the top surface side of the body 16. The number and installation positions of the laser beam rotary irradiators 14 may be changed as desired.

[0033] The laser beam transmitter 26 is a laser light source that emits a laser beam. In this embodiment, the laser beam transmitter 26 is a well-known laser transmission module that linearly emits a green laser beam that is effective for repelling, for example, vermin birds such as ducks and vermin animals such as deer and wild boars. As shown in FIGS. 4 and 5 , the laser beam transmitter 26 is, for example, built into the body 16 of the water vehicle 12 and is fixed via a laser support bracket 32 ​​with the laser beam emission direction set upward. The laser beam transmitter 26 receives power from a battery 80 and emits a laser beam while being controlled, for example, by a control unit 90. The laser beam transmitter 26 may be remotely controlled via the control unit 90 in accordance with an operation signal transmitted from the communication unit 62. Alternatively, a timer may be provided in the control unit 90, and the laser beam transmitter 26 may be controlled on and off by the timer. The laser support bracket 32 ​​is made of a vertically long cylinder that is open at the top and bottom, and its upper end is placed on the top plate side of the body part 16, with the laser beam transmitter 26 housed inside the cylinder. The laser beam emitted from the laser beam transmitter 26 passes through the hollow interior of the laser support bracket 32 ​​and is emitted upward, and is reflected by a mirror part 42, which will be described later, and is emitted to the outside.

[0034] The rotation mechanism 28 is a laser beam rotating means that can rotate and irradiate the laser beam emitted from the laser beam transmitter 26 around the vertical axis Z. In this embodiment, as shown in Figures 4 and 5, the rotation mechanism 28 has a hollow motor 34 with a hollow rotating shaft, and is configured to pass the laser beam from the laser beam transmitter 26 through the hollow space of the rotating shaft. Specifically, the rotation mechanism 28 includes the hollow motor 34, a support plate 36 that supports the hollow motor 34 on the body portion 16, a rotating plate 38 that is connected to the hollow rotating shaft of the hollow motor 34, and a mirror unit 40 that is fixed to the rotating plate 38 and has a mirror portion 42 that reflects the laser beam from the laser beam transmitter 26 toward the outside.

[0035] The hollow motor 34 is, for example, a brushless motor powered by a battery 80 built into the body 16. The hollow motor 34 has its motor base fixed to the support plate 36, and is installed with its hollow rotation shaft 35 pointing up and down and aligned linearly with the hollow interior of the laser support bracket 32. The rotation speed of the hollow motor 34 is controlled by a control unit 90, and can be remotely controlled via the control unit 90. Note that the hollow motor 34 may be time-controlled by a timer in the control unit 90, or may be turned on and off, controlled, or have its rotation speed changed by a predetermined program.

[0036] The support plate 36 is fixed, for example, to the top surface of the body portion 16. A hole penetrating vertically is opened in the center of the circular base plate, and a hollow tubular portion 36a is integrally formed and protrudes upward from the edge of the hole. The support plate 36 is installed so that the penetration direction of the central hole and the hollow portion of the tubular portion faces up and down, and the hollow motor 34 is built into the tubular portion. In addition, a laser support bracket 32 ​​is attached to the underside of the support plate 36. This allows the rotation mechanism 28 and the laser beam transmitter 26 attached to the laser support bracket 32 ​​to be attached to the surface vehicle 12 as a unit.

[0037] The rotating plate 38 is an attachment that connects the hollow rotating shaft of the hollow motor 34 and the mirror unit 40. The rotating plate 38 is made of, for example, a circular plate member formed to a certain size so that the mirror unit 40 can be placed on it, and has a through-hole that passes through vertically in the center. The rotating plate 38 is fixed to the upper end of the rotating shaft of the hollow motor 34 with the central through-hole aligned with the hollow space of the rotating shaft.

[0038] The mirror unit 40 is an external irradiation means that reflects the laser light from the laser light transmitter 26 by a mirror portion 42 and irradiates the reflected light horizontally or laterally at a predetermined inclination angle. The mirror unit 40 is rotated around the vertical axis Z by the hollow motor 34, and the mirror portion 42 of the mirror unit 40 rotates integrally with the mirror unit 40, thereby rotating the laser light from the fixedly installed laser light transmitter 26 horizontally and irradiating it in a 360-degree rotation.

[0039] The mirror unit 40 has a mirror section 42 that serves as an irradiation section 44 that reflects laser light from the laser light transmitter 26 that passes through hollow spaces such as the hollow motor 34 and the rotating plate 38, and irradiates the light in a predetermined horizontal direction, and an oscillator 46 that supports the mirror section 42 and is able to oscillate freely about a horizontal axis to change the angle of the mirror section 42. The mirror section 42 and oscillator 46 of the mirror unit 40 constitute the irradiation angle change mechanism 30.

[0040] The irradiation angle change mechanism 30 is a means for changing the irradiation angle of the laser beam with respect to the horizontal direction, and is provided so as to be able to change the irradiation angle of the laser beam with respect to the horizontal direction. In this embodiment, the irradiation angle change mechanism 30 can change the angle of reflection of the laser beam from the laser beam transmitter 26 by changing the angle of the mirror unit 42. Furthermore, the irradiation angle change mechanism 30 has a speed linkage means 48 that can change the irradiation angle of the laser beam with respect to the horizontal direction in accordance with the rotation speed of the rotation mechanism 28.

[0041] In detail, the speed interlocking means 48 includes a swinging body 46, a weight 50 attached to the swinging body 46, and a mirror unit 42. The swinging body 46 is supported by a swing support frame 52 supported by the rotating plate 38 so as to be swingable about a horizontal axis. The swinging body 46 has, for example, a plate-like or block-like swing base to which the mirror unit 42 is fixed, with the mirror surface of the mirror unit 42 facing the hollow space of the rotating shaft of the hollow motor 34. The swinging body 46 is pivotally supported by the swing support frame 52 via a swing shaft 47, whose axial direction is set horizontally at approximately the center of the intermediate position. The swing range of the swinging body 46 is limited to a certain extent, and it can swing freely, for example, within a range of 30 to 45 degrees relative to the horizontal direction. An arm 54 protrudes from one end of the swinging body 46 in a generally L-shape, and the protruding lower end of the arm 54 is restricted at an angle where it abuts against the rotating plate 38, at which point the swinging body 46 is set at an inclination angle of 30 degrees relative to the horizontal. Meanwhile, the swinging body 46 is restricted when its upper end abuts against the swing support frame 52, at which point the swinging body 46 is set at an inclination angle of 45 degrees relative to the horizontal. The swing support frame 52 is formed, for example, in an inverted U-shape, and the swinging body 46 is disposed inside the U-shaped frame. The lower ends of both sides of the swing support frame 52 are fixed to the rotating plate 38.

[0042] The mirror section 42 is made of a reflecting mirror with a flat mirror surface, and is installed on the oscillator 46 with the mirror surface facing downward, i.e., facing the hollow space of the rotary shaft of the hollow motor 34, and is fixed integrally to the oscillator 46. Therefore, the mirror section 42 swings integrally with the oscillator 46, changing the tilt angle of the mirror surface. The changeable range of the tilt angle of the mirror surface of the mirror section 42 is set to a range of 30 to 45 degrees with respect to the horizontal direction, corresponding to the swing range of the oscillator 46.

[0043] The weight 50 is attached to an arm 54 that protrudes from the oscillator 46 in a generally L-shape in side view. The weight of the weight 50 constantly causes the oscillator 46 to oscillate in one direction around the horizontal axis. The weight balance of the weight 50 stops the oscillator 46 in a state where the lower end of the arm 54 of the oscillator 46 abuts against the rotating plate 38.

[0044] With this configuration, the tilt angle of the oscillator 46 and the mirror unit 42 changes depending on the rotation speed due to the balance between the gravity of the weight 50 and the outward force due to the centrifugal force generated by the rotation speed of the rotation mechanism 28. As a result, the reflection angle of the laser light from the laser beam transmitter 26 changes, and the irradiation angle of the laser light can be changed. Therefore, when the rotation speed around the vertical axis by the rotation mechanism 28 is low, the tilt angle of the mirror unit 42 of the oscillator 46 is set to be relatively smaller than the horizontal, and the irradiation direction of the laser light reflected by the mirror unit is a horizontal direction that is tilted relatively significantly downward from the horizontal. As the rotation speed around the vertical axis by the rotation mechanism 28 increases, the effect of the centrifugal force increases, gradually approaching the horizontal direction and increasing the tilt angle of the oscillator with respect to the horizontal direction. As a result, the irradiation angle of the laser light becomes a horizontal direction that is tilted gradually smaller from the horizontal direction. When the rotation speed reaches a predetermined high speed or higher, the tilt angle of the mirror portion 42 of the oscillator 46 is set to a relatively large angle relative to the horizontal direction, and as a result, the direction of irradiation of the laser light reflected by the mirror portion becomes horizontal.

[0045] For example, in this embodiment, as shown in FIG. 6( a), when the oscillator 46 is rotated by the rotation mechanism 28 around the vertical axis Z at a low speed, the weight of the cone 50 is greater than the outward force due to centrifugal force, and as a result, the mirror surface of the mirror unit 42 is inclined at an angle of 30 degrees with respect to the horizontal. In this state, when the laser beam Li from the lower laser beam transmitter 26 is reflected by the mirror unit 42 of the oscillator 46, it is irradiated as laser beam Lr in a horizontal direction inclined 30 degrees downward from the horizontal, and is rotated and irradiated through 360 degrees while maintaining this inclination angle. On the other hand, as shown in FIG. 6( b), when the rotation by the rotation mechanism 28 around the vertical axis is at a high speed equal to or greater than a predetermined speed, the outward force due to centrifugal force is greater than the weight of the cone 50, and as a result, the mirror surface of the mirror unit 42 is inclined at an angle of 45 degrees with respect to the horizontal. In this state, when the laser light Li from the lower laser light transmitter 26 is reflected by the mirror portion 42 of the oscillator 46, it becomes laser light Lr that is emitted in a lateral direction that is approximately horizontal (tilt angle 0 degrees), and is then rotated and emitted 360 degrees while maintaining the horizontal direction. In this way, the irradiation angle of the laser light can be changed by adjusting the speed with the rotation mechanism 28, so that the configuration is simple and easy to control, and it can be expected that the laser light can be rotated and emitted onto the water over a wide area to efficiently repel birds and animals.

[0046] In this embodiment, the speed interlocking means 48 is configured so that the slower the rotation speed of the rotation mechanism 28, the greater the downward tilt angle of the laser beam from the horizontal, and the faster the rotation speed, the closer the laser beam is to the horizontal. Therefore, the laser beam is irradiated at a relatively slow angular velocity in the area close to the water-based bird and animal pest control device 10, ensuring a longer irradiation time for birds and animals close to the device, and a higher repelling effect is expected. Note that, as in the example of FIG. 8 described below, the speed interlocking means 48 may be configured so that when the rotation speed of the rotation mechanism 28 is slow, the laser beam is irradiated at an angle close to the horizontal, and the faster the rotation speed, the greater the downward tilt angle of the laser beam from the horizontal.

[0047] The oscillator 46 may be configured to be oscillated mechanically or electrically. For example, a cam or a gear motor may be combined to oscillate the oscillator 46, so that the oscillator 46 can be changed to any angle. Furthermore, for example, the laser beam transmitter 26 may be directly installed on the oscillator 46 as an irradiation unit.

[0048] Furthermore, in this embodiment, the oscillating body 46 and the oscillating support frame 52 are covered with a removable cover 56. The cover 56 is made of a cup-shaped cover body that is open downward, and is attached to the rotating plate 38 to rotate about the vertical axis together with the rotating plate 38. A slit 58 is provided on the side of the cover 56 at a position facing the mirror unit 42 that serves as the irradiation unit 44, and allows the laser light reflected by the mirror unit 42 to pass to the outside. The slit 58 is provided with a length that corresponds to the change in angle of the laser light that occurs when the angle of the mirror unit 42 is changed.

[0049] In this embodiment, a proximity sensor 60 is attached to the body 16 of the surface vehicle 12. The proximity sensors 60 are attached, for example, in four directions (front, back, left, and right) of the body 16 and are electrically connected to the control unit. For example, the proximity sensor 60 detects when the surface vehicle 12 approaches an obstacle such as a rock or the wall of a waterway. When the proximity sensor 60 detects an obstacle, the propulsion device 18 of the surface vehicle can be automatically controlled by the control unit to move around the obstacle, for example.

[0050] A communication unit 62 is attached to the surface vehicle 12. The communication unit 62 is electrically connected to a battery 80 and a control unit 90, and is powered by electricity supplied from the battery 80. It can also receive control signals remotely from a user's information terminal, personal computer, or the like to perform operations such as movement of the surface vehicle 12 and control of the laser beam rotary irradiation device 14. The communication unit 62 is also connected to a camera 68, which will be described later, and can transmit images captured by the camera 68 to the user's information terminal, or the like.

[0051] In this embodiment, a solar power generation panel 64 is attached. The solar power generation panel 64 is connected to a battery 80, and generates electricity when the sun is out, such as during the day, so that the battery 80 can be charged even on the water without needing to be recovered. The solar power generation panel 64 is supported by a support 66 erected from the center of the top surface of the body 16, with the surface of the solar cell facing upward.

[0052] As shown in Figures 1 and 2, a camera 68 connected to a communication unit 62 is attached to the water vehicle 12. The camera 68 is powered by a battery 80 and controlled by a control unit 90. The camera 68 is remotely controlled so that its shooting direction can be changed vertically and horizontally. Images captured by the camera 68 are transmitted to the user's information terminal via the communication unit 62. A microphone may be provided in addition to the camera 68 to simultaneously transmit images and audio of the surroundings. The camera 68 may be able to change its shooting direction. Multiple cameras 68 may be attached.

[0053] 1 and 2, the water vehicle 12 is equipped with a speaker 70 that emits sound or voice to scare off harmful birds and animals. The speaker 70 can be remotely controlled to emit sound as needed, for example, while viewing video transmitted by a camera 68 or the like. The speaker 70 may also be configured to emit sound at predetermined time intervals controlled by a timer in the control unit 90, or may emit sound when harmful birds and animals are recognized from video captured by the camera 68 or when they are detected by the proximity sensor 60.

[0054] Next, the operation of the water-based bird and animal pest control repellent device 10 according to this embodiment is described. The water-based bird and animal pest control repellent device 10 is floated, for example, on an irrigation channel or reservoir near a field and moved across the water by remote control or other means. The two propellers 22A and 22B of the propulsion unit 18 can independently change their propulsion direction, enabling a variety of movements and movements, including forward, backward, left, right, turning, and spinning. The operation is performed while monitoring the movement in real time using the camera 68. While moving across the water or stopping at a predetermined position, the laser beam rotary projection device 14 projects a laser beam horizontally or laterally at a predetermined angle downward, rotating 360 degrees. By changing the rotation speed of the rotation mechanism 28, the speed interlocking means 48 can change the laser beam projection angle in conjunction with the rotation speed, allowing the laser beam to be projected over a wide range, not just a fixed area, but also from the vicinity of the device to a distant location. In this way, the bird and animal damage control water-based repellent device 10 can move freely on the water, change the angle of laser light irradiation and rotate and irradiate over a wide area, thereby effectively repelling harmful birds and animals, thereby effectively and efficiently preventing damage caused by harmful birds and animals to the water and fields around the water.

[0055] FIG. 8 shows another example of the laser beam rotary irradiator 14. In the example of FIG. 8, the configurations of the irradiation angle change mechanism 30 and the speed interlocking means 48 are different from those of the above-described embodiment. The speed interlocking means 48 can be configured to irradiate the laser beam at an irradiation angle close to horizontal when the rotation speed of the rotation mechanism 28 is low, and to tilt the laser beam irradiation angle downward more significantly from horizontal as the rotation speed increases. In this example, when the rotation speed around the vertical axis of the rotation mechanism 28 is low, the laser beam is irradiated farther away. Therefore, the laser beam is irradiated at a relatively slow angular velocity in areas farther from the water-based bird and animal pest control device 10, ensuring a longer irradiation time for birds and animals farther away, thereby enhancing the repelling effect.

[0056] As shown in FIG. 8( a), specifically, the speed interlocking means 48 includes an oscillator 46, a weight 50, and a mirror 42 that serves as the external irradiation unit 44, similar to the above. The angle of laser light irradiation is changed by changing the tilt angle of the oscillator 46 and the mirror 42 based on the balance between the weight of the weight 50 and the outward force due to centrifugal force generated by rotation. However, the method of assembling the weight 50 to the oscillator 46 differs from the above embodiment. The weight 50 is attached to one end of the oscillation base to which the mirror 42 of the oscillator 46 is fixed, and its weight acts to tilt one end of the oscillator 46 downward. When the oscillator 46 is stopped with its lower end abutting the rotating plate 38 while the rotation speed of the rotation mechanism 28 is low, the mirror surface of the mirror 42 is tilted downward by 45 degrees relative to the horizontal. The swinging range of the swinging body 46 around the horizontal axis is set to be changeable from an inclination angle of 45 degrees to the horizontal direction to the horizontal direction, that is, within the range of an inclination angle of 45 degrees to 0 degrees.

[0057] 8(a), when the oscillator 46 is rotated by the rotation mechanism 28 at a low speed about the vertical axis Z, the weight of the weight 50 is greater than the outward force due to centrifugal force, and as a result, the mirror surface of the mirror unit 42 is inclined at an angle of 45 degrees with respect to the horizontal. In this state, the laser beam Li from the lower laser beam transmitter 26 is reflected by the mirror unit 42 of the oscillator 46 and irradiated as laser beam Lr in the horizontal direction, which is the horizontal direction, during a 360-degree rotation. As shown in FIG. 8(b), when the rotation speed by the rotation mechanism 28 is gradually increased, the inclination angle of the mirror surfaces of the oscillator 46 and the mirror unit 42 with respect to the horizontal direction gradually decreases, and the laser beam Li from the laser beam transmitter 26 is irradiated as laser beam Lr in the horizontal direction at an increasingly larger inclination angle α with respect to the horizontal direction during a 360-degree rotation. 8(c), when the rotation about the vertical axis by the rotation mechanism 28 is at a high speed equal to or greater than a predetermined speed, the outward force due to centrifugal force becomes greater than the weight of the weight 50, and as a result, the mirror surfaces of the oscillator 46 and the mirror section 42 are oriented horizontally, i.e., the tilt angle with respect to the horizontal is 0 degrees. In this state, when the laser light from the laser light transmitter 26 on the lower side is reflected by the mirror section 42 of the oscillator 46, it returns to the laser light transmitter 26 and is not irradiated externally. Note that a stopper or the like may be provided on the oscillator 46 or the oscillation support frame 52 to lock the oscillator 46 at a predetermined tilt angle (e.g., 30 degrees, 45 degrees, etc.) to restrict the range of oscillation of the oscillator 46 so that the laser light is irradiated externally when the rotation speed by the rotation mechanism 28 is high.

[0058] For example, when two laser beam rotary irradiators 14 are provided as described above, the speed interlocking means 48 of the irradiation angle change mechanisms 30 may be configured differently in combination. For example, the speed interlocking means 48 of the irradiation angle change mechanism 30 of one laser beam rotary irradiator 14 may be configured to irradiate the laser beam at a large irradiation angle with respect to the horizontal direction when the rotation speed of the rotation mechanism 28 is low, and then approach the horizontal direction as the rotation speed increases (the configuration of FIG. 4). Conversely, the speed interlocking means 48 of the irradiation angle change mechanism 30 of the other laser beam rotary irradiator 14 may be configured to irradiate the laser beam in the horizontal direction or in a lateral direction at an angle close to the horizontal direction when the rotation speed of the rotation mechanism 28 is low, and then irradiate at an increasing angle from the horizontal direction as the rotation speed increases (the configuration of FIG. 8). By combining laser beam rotary irradiators 14 with different structures in this way, it is possible to vary the irradiation patterns of the laser beam and to more effectively repel birds and animals.

[0059] The water-based bird and animal damage prevention device of the present invention described above is not limited to the configuration of the above-mentioned embodiment, and any modifications may be made within the scope that does not deviate from the essence of the present invention as described in the claims. [Industrial Applicability]

[0060] The water-based bird and animal repellent device of the present invention for preventing bird and animal damage can be used as an aquatic repellent device to repel harmful birds and animals that are present on water bodies such as irrigation channels and reservoirs near fields, rivers, lakes, dams, and the surrounding areas of such bodies of water, and effectively prevent various types of bird and animal damage, such as marine products that live or are farmed in water bodies, and agricultural products that are grown in fields near water. [Explanation of symbols]

[0061] 10. Water-based bird and animal repellent device 12 Water vehicles 14. Rotating laser beam irradiation device 18 Propulsion device 20 Float 22A, 22B thruster 26 Laser light transmitter 28 Rotation mechanism 30 Beam angle change mechanism 34 Hollow motor 42 Mirror section 44 Irradiation unit 46 Oscillator 48 Speed ​​interlocking means 50 Pyramid

Claims

1. a water vehicle having a propulsion device; This water-based bird and animal pest control device is characterized by comprising a laser light rotary irradiation device that is attached to the water-based moving body and irradiates laser light horizontally or laterally at a predetermined angle while rotating and irradiating it around a vertical axis.

2. The laser beam rotary irradiation device includes: a laser beam transmitter; a rotation mechanism that can rotate and irradiate the laser light emitted from the laser light transmitter around a vertical axis; 2. The water-based bird and animal damage prevention device according to claim 1, further comprising an irradiation angle changing mechanism that is provided to be able to change the irradiation angle of the laser light relative to the horizontal direction.

3. 3. The water-based bird and animal pest control device according to claim 2, wherein the irradiation angle changing mechanism has a speed interlocking means that can change the irradiation angle of the laser light relative to the horizontal direction in accordance with the rotation speed of the rotation mechanism.

4. The speed interlocking means includes a swinging body that rotates around a vertical axis via a rotation mechanism and swings around a horizontal axis; a weight attached to the oscillator so as to tilt the oscillator at a predetermined oscillation angle; 4. The water-based bird and animal damage prevention device according to claim 3, further comprising an irradiation unit that changes the irradiation angle of the laser light in accordance with the oscillation of the oscillator about the horizontal axis and irradiates the laser light.

5. the irradiation unit has a mirror unit fixed to the oscillator so as to change the angle of the mirror surface in response to the oscillatory movement of the oscillator; 5. The water-based bird and animal pest control device according to claim 4, wherein a laser beam transmitter is installed on the body of the water-based vehicle so as to irradiate a laser beam toward the mirror portion.

6. the rotation mechanism includes a hollow motor having a hollow rotation shaft; a mirror portion fixed to an oscillator connected to the hollow motor is installed so that the mirror surface faces the hollow space of the hollow motor; 6. The water-based bird and animal pest control device according to claim 5, wherein the laser light transmitter is installed so that a laser beam passes through the hollow space of the hollow motor and is irradiated onto the mirror portion.

7. 7. The water-based bird and animal damage prevention device according to claim 1, wherein the propulsion device of the water-based moving body has a plurality of propellers attached so that the propulsion direction can be changed independently of each other.

8. The water vehicle has a body part formed in a cylindrical shape that is circular in plan view, and A plurality of floats are attached to the circumferential surface of the trunk of the body portion, 8. The water-based bird and animal pest control device according to claim 7, wherein a plurality of propellers are provided on the underside of the body portion.

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