Bird repelling device and method of use

Abstract

The application provides a bird repelling device and a use method, and belongs to the technical field of laser bird repelling, and comprises a hollow cylinder, one end of the cylinder in the axial extension direction is provided with a first opening, and the side surface extending in the radial direction of the cylinder is provided with a second opening; a laser emission unit is arranged in the cylinder and away from the one end of the first opening; a telescopic light path unit is arranged at the second opening of the cylinder and communicates with the inside of the cylinder; a beam expanding mechanism is arranged at the first opening of the cylinder and is used for expanding the laser emitted by the laser emission unit or introducing the light outside the cylinder into the cylinder and the telescopic light path unit; a switch switching unit is arranged in the inside of the cylinder and is used for shielding the light emission light path of the laser emission unit and reflecting the external light into the telescopic light path unit through the second opening or enabling the laser emission unit to work so that the laser is sequentially emitted outwards through the cylinder and the beam expanding mechanism. The light paths of laser emission and telescoping are integrated, and the portability and bird repelling efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of laser bird deterrence technology, and in particular to a bird deterrence device and its usage method. Background Technology

[0002] High-value aquatic and fruit growing areas are frequently attacked by birds, causing significant economic losses to farmers and growers. Especially during the product ripening period, large numbers of birds come to peck at the food. Moreover, birds are highly adaptable to their environment, and conventional bird-repelling methods only have short-term effects and are difficult to maintain in the long term. Currently, bird deterrence methods mainly include the following: 1. Manual bird deterrence, using long poles or hand gestures. This method has little effect on birds at a distance. 2. Loud noise bird deterrence, firing airburst bombs at flocks of birds, using the loud noise after the airburst to frighten them. This method is cumbersome to implement, and the birds will quickly return after the airburst. Long-term use is not only costly but also has limited effectiveness. 3. Ultrasonic bird deterrence, using ultrasound to stimulate birds and cause them physiological discomfort to achieve the purpose of deterrence. However, this method has a limited effective distance, requires multiple ultrasonic generators for large-scale deployment, has high installation and maintenance costs, and is only effective for specific bird species, with poor universality. It also requires a period of cumulative use to produce results and cannot be used for immediate bird deterrence tasks. 4. Laser bird deterrence, using the strong light of a laser to shine into the eyes of birds, causing them discomfort to achieve the purpose of deterrence. This method uses laser to stimulate the bird's eyes, requiring the laser to be aimed at the bird's eye. It is very difficult to operate at a distance and may damage the bird's eyes.

[0003] Based on the above situation, a bird deterrent device is provided, which uses a laser virtual rod to take advantage of the characteristics of bird vision. A specific wavelength of laser is used, which is expanded and waved around the birds, greatly improving the deterrent efficiency and speed. It is especially suitable for the timely deterrent of predatory birds and is therefore very necessary. Summary of the Invention

[0004] In view of this, the present invention proposes a bird-repelling device and method of use that is small and portable, has good collimation, and does not use the traditional method of stimulating the bird's eyes to repel birds, but instead uses beam expansion to form randomly waving light spots to achieve a visual effect similar to shooing away birds with a stick.

[0005] The technical solution of this invention is implemented as follows: On one hand, the present invention provides a bird deterrent device, comprising: The hollow cylinder has a first opening at one end in the axial direction and a second opening on the side surface in the radial direction. The laser emitting unit is located inside the cylinder at the end furthest from the first opening; The telescope optical path unit is located at the second opening of the cylinder and is connected to the inside of the cylinder. The beam expanding mechanism is located at the first opening of the cylinder and is used to expand the laser emitted by the laser emitting unit, or to guide light from outside the cylinder into the cylinder and the telescope optical path unit. The switch unit is located inside the cylinder and is used to block the light output path of the laser emitting unit and reflect the external light into the telescope optical path unit through the second opening, or to enable the laser emitting unit to work so that the laser passes through the cylinder and the beam expander in sequence and is emitted outward.

[0006] Based on the above technical solutions, preferably, the switch switching unit includes a hollow switch compartment, a straight rod, a gear, a swing rod, and a rotating reflector; the switch compartment is disposed on the side surface of the cylinder, and a hollow first cavity is disposed inside the switch compartment. A third opening is disposed at one end of the switch compartment, and a fourth opening is disposed on the side surface of the cylinder. The first cavity is interconnected with the third opening and the fourth opening, respectively; the straight rod passes through the third opening and extends into the first cavity of the switch compartment, and the surface of the straight rod is slidably connected to the inner surface of the first cavity; a linear rack is also disposed on the surface of the straight rod near the fourth opening; a gear is disposed on the side of the switch compartment near the fourth opening, and the gear is rotatably connected to the switch compartment. The gear is also meshed with the linear rack. A swing rod is disposed on the side of the gear away from the straight rod, one end of the swing rod is fixedly connected to the side surface of the gear, and the other end of the swing rod passes through the fourth opening and extends into the cylinder; a rotating reflector is disposed on the end of the swing rod away from the gear; the rotating reflector in the initial position is connected to the beam expander mechanism and the optical path of the telescope optical path unit, respectively.

[0007] Preferably, a spring retaining ring is provided on the straight rod, the spring retaining ring surrounds the surface of the straight rod and is fixedly installed; a retaining ring is fixedly installed inside the switch compartment, and the straight rod passes through the retaining ring; a return spring is also surrounded on the straight rod, the return spring is located between the spring retaining ring and the retaining ring, and is fixedly connected to the spring retaining ring and the retaining ring respectively.

[0008] In a further preferred embodiment, an electrode is provided at the end of the straight rod extending into the switch compartment, and a metal contact is provided on the inner surface of the switch compartment. The electrode and the metal contact are electrically connected to the switch contacts of the laser emitting unit, respectively. When the electrode contacts the metal contact, the laser emitting unit is enabled and outputs laser light. When the electrode separates from the metal contact, the laser emitting unit stops outputting laser light.

[0009] Preferably, the telescope optical path unit includes a first tube, a second tube, a fixed reflector, and an eyepiece; the first tube and the second tube are respectively provided with a through-channel and a channel, and the central axes of the first tube and the second tube are perpendicular to each other; the first channel is connected to the second opening and the second channel respectively; a fixed reflector is provided at the end of the second tube near the first tube, and the fixed reflector is parallel to the rotating reflector at the initial position; an eyepiece is provided at the end of the second tube away from the first tube, and the eyepiece is located on the reflected optical path of the fixed reflector.

[0010] Preferably, both the fixed reflector and the rotating reflector at the initial position are at a 45° angle to the laser emission direction of the laser emitting unit.

[0011] Based on the above technical solutions, preferably, the beam expanding mechanism adopts the Keplerian beam expanding method of a transmission lens or the reflective beam expanding method of a curved mirror.

[0012] Based on the above technical solutions, preferably, the laser wavelength of the laser emitting unit is green light with a wavelength of 510nm-570nm.

[0013] Based on the above technical solutions, preferably, a power supply unit is also included. The power supply unit is located at the end of the cylinder away from the first opening and is electrically connected to the laser emitting unit.

[0014] On the other hand, the present invention also provides a method of using a bird deterrent device, comprising the following steps: S1: Configure the above-mentioned bird deterrent device; the telescope optical path unit includes a first tube, a second tube, a fixed reflector and an eyepiece, the rotating reflector is located on the incident light path of the fixed reflector, and the eyepiece is located on the outgoing light path of the fixed reflector. S2: When operators patrol the breeding or planting area and find birds approaching aquatic products or fruits, they should hold the bird deterrent device with both hands and aim it at the location of the birds. S3: Hold the bird deterrent device level with both hands, and aim one eye at the eyepiece of the telescope optical path unit to achieve close observation. External light passes through the beam expander, rotating mirror, first tube and second tube in sequence, and finally reaches the operator's eye. Adjust the position of the bird deterrent device with both hands so that the bird's head is in the field of view of the telescope optical path unit. After confirming that the bird is doing something harmful to aquatic products or fruits, it is identified as a harmful bird. S4: Maintain the current posture of the handheld bird deterrent device, press the end of the straight rod extending from the third opening of the switch compartment with your finger. The straight rod slides into the switch compartment, and the linear rack on the straight rod drives the gear to rotate clockwise. The swing arm on the gear drives the rotating reflector to rotate relative to the cylinder. The rotating reflector no longer blocks the light path of the laser emitting unit. When the straight rod is pressed to the limit position, the electrode on the straight rod abuts against the metal contact plate on the inner surface of the switch compartment. The laser emitting unit outputs laser light. After passing through the beam expanding mechanism, the laser light is directed towards the location of the harmful bird. Swing the cylinder to make the expanded and thickened laser beam move randomly in the vicinity of the location of the harmful bird. This causes the birds to have the visual illusion that the thickened laser beam is a physical stick. In order to avoid being hit by the stick, they will quickly flee, thus achieving timely repelling of the predatory birds.

[0015] The bird deterrent device and its usage method provided by this invention have the following advantages compared to the prior art: (1) The bird deterrent device provided by the present invention is simple to operate, easy to carry, and can be used without special training. Compared with the existing method of stimulating bird eyes with laser bird deterrent, the present invention does not directly irradiate bird eyes and will not cause harm to birds. Since the initial laser beam spot is small, after the beam expander is enlarged, it is waved near the position where the bird stays, so that the thickened laser beam will produce the effect of a virtual stick. The birds will instinctively escape when they perceive the movement of the laser beam, thereby achieving the purpose of repelling them. The accuracy requirement is also low. At the same time, the collimation of the laser after beam expansion is not affected, and the effective distance for repelling birds can be guaranteed. (2) By integrating the laser output optical path and the incident optical path of the telescope optical path unit, when the finger presses the straight rod, the linear rack on the straight rod drives the gear and the rotating mirror to rotate, thereby realizing the switching of the optical path of the telescope optical path unit to the optical path of the laser emission unit and realizing the continuous output of the laser. When the finger is released, the straight rod automatically resets under the action of the reset spring, thereby resetting the laser emission unit, gear and rotating mirror, restoring the optical path of the telescope optical path unit, realizing the rapid switching between human eye aiming and laser beam expansion to drive away, greatly improving the efficiency of driving away harmful birds. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a top view of the device and method of using a bird deterrent according to the present invention; Figure 2 This is a right view of a bird deterrent device and its usage method according to the present invention; Figure 3 for Figure 2 AA-direction cross section; Figure 4 for Figure 2 A magnified view of part B; Figure 5 This is a flowchart illustrating the steps of a bird deterrent device and its usage method according to the present invention.

[0018] Reference numerals: 1. Cylinder body; 2. Laser emitting unit; 3. Telescope optical path unit; 4. Beam expander mechanism; 5. Switching unit; 11. First opening; 12. Second opening; 13. Fourth opening; 51. Switch compartment; 52. Straight rod; 53. Gear; 54. Swing rod; 55. Rotating reflector; 56. First cavity; 57. Third opening; 58. Spring retaining ring; 59. Retaining clasp; 510. Return spring; 100. Electrode; 200. Metal contact plate; 31. First tube body; 32. Second tube body; 33. Fixed reflector; 34. Eyepiece. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Existing laser bird-repelling strategies utilize the intense light of a laser to irradiate the birds' eyes, causing discomfort and thus driving them away. This method, which uses laser stimulation of the bird's eyes, requires the laser to be precisely aimed at the bird's eye, making long-distance operation very difficult, lacking timeliness, and potentially damaging the bird's eyes. Therefore, if... Figures 1-4 As shown, in one aspect, the present invention provides a bird deterrent device, comprising: The hollow cylinder 1 has a first opening 11 at one end in the axial direction and a second opening 12 on the side surface in the radial direction. The cylinder 1 has a rod-shaped profile, which is convenient for users to hold with one or two hands.

[0021] The laser emitting unit 2 is disposed inside the cylinder 1 at one end away from the first opening 11; the laser emitting unit 2 is used to generate laser light of a specific wavelength. As a preferred embodiment, the laser emitting unit 2 of the present invention can emit green light with a wavelength of 510nm-570nm.

[0022] The telescope optical path unit 3 is located at the second opening 12 of the cylinder 1 and is connected to the inside of the cylinder 1. The telescope optical path unit 3 is used to observe the current position of the birds. By further combining with the beam expander 4, it can image distant targets and achieve the effect of visual close observation, so that the operator can identify harmful birds and their behavior by visual means.

[0023] The beam expander 4 is located at the first opening 11 of the cylinder 1 and is used to expand the laser beam emitted by the laser emitting unit 2, or to guide the light from outside the cylinder 1 into the interior of the cylinder 1 and the telescope optical path unit 3. The beam expander 4 can magnify the spot of the initial laser beam by multiple times, so as to form a thicker laser beam. By moving the laser beam, the birds will have a virtual stick visual illusion and mistake the laser beam for a physical stick.

[0024] The beam expanding mechanism 4 of this invention employs either a Keplerian beam expanding method using a transmission lens or a reflective beam expanding method using a curved mirror. When using the Keplerian beam expanding method with a transmission lens, the beam expanding mechanism 4 includes two convex lenses, both disposed within the cylinder 1 on one side of the first opening 11, and the center distance between the two convex lenses is equal to the sum of their focal lengths. When using the reflective beam expanding method with a curved mirror, it includes at least one convex reflector and one concave reflector. A laser beam parallel to the optical axis of the convex reflector is incident on the convex reflector, which reflects the laser beam onto the concave reflector, which then reflects it again to form the expanded laser beam. These two forms are merely descriptions of the principle of laser beam expanding and are not intended to limit the design of the beam expanding mechanism. The structure of the beam expanding mechanism can also be other methods capable of enlarging the laser beam spot. The switch switching unit 5 is located inside the cylinder 1. It is used to block the light output path of the laser emitting unit 2 and reflect the external light through the second opening 12 into the telescope optical path unit 3, or to enable the laser emitting unit 2 to work, so that the laser passes through the cylinder 1 and the beam expanding mechanism 4 in sequence and is emitted outward.

[0025] The switch unit 5 can switch between the laser output optical path and the telescope optical path, and can also start or stop the laser emitting unit. It achieves pipeline reuse and device arrangement in a compact structure, thereby improving the portability of the bird deterrent device.

[0026] like Figure 3 and Figure 4As shown, the switch switching unit 5 includes a hollow switch compartment 51, a straight rod 52, a gear 53, a swing rod 54, and a rotating reflector 55. The switch compartment 51 is disposed on the side surface of the cylinder 1, and a hollow first cavity 56 is disposed inside the switch compartment 51. A third opening 57 is provided at one end of the switch compartment 51, and a fourth opening 13 is correspondingly provided on the side surface of the cylinder 1. The first cavity 56 is interconnected with the third opening 57 and the fourth opening 13, respectively. The straight rod 52 passes through the third opening 57 and extends into the first cavity 56 of the switch compartment 51. The surface of the straight rod 52 is slidably connected to the inner surface of the first cavity 56. A linear rack is also provided on the surface near the fourth opening 13; a gear 53 is provided on the side of the switch compartment 51 near the fourth opening 13, the gear 53 is rotatably connected to the switch compartment 51, the gear 53 is also meshed with the linear rack, a rocker arm 54 is provided on the side of the gear 53 away from the straight rod 52, one end of the rocker arm 54 is fixedly connected to the side surface of the gear 53, and the other end of the rocker arm 54 passes through the fourth opening 13 and extends into the inside of the cylinder 1; a rotating reflector 55 is provided on the end of the rocker arm 54 away from the gear 53; the rotating reflector 55 in the initial position is connected to the beam expander mechanism 4 and the telescope optical path unit 3 respectively.

[0027] An electrode 100 is provided at the end of the straight rod 52 that extends into the switch compartment 51. A metal contact 200 is provided on the inner surface of the switch compartment 51. The electrode 100 and the metal contact 200 are electrically connected to the switch contacts of the laser emitting unit 2, respectively. When the electrode 100 contacts the metal contact 200, the laser emitting unit 2 is enabled and outputs laser light. When the electrode 100 separates from the metal contact 200, the laser emitting unit 2 stops outputting laser light.

[0028] The switch unit 5 simultaneously functions as an optical path switcher and a driver for the laser emitting unit 2. When the lever 52 is in its initial position, the rotating reflector 55 blocks the output light path of the laser emitting unit 2. At this time, the beam expander 4, the second opening 12, and the telescope optical path unit 3 form a complete reflected light path, sending ambient light into the user's eyes for environmental observation. When the lever 52 is pressed down at the end extending from the third opening 57, the lever 52 slides horizontally relative to the switch compartment 51 until it reaches its maximum position. The electrode on the lever 52 contacts the metal contact piece on the inner surface of the switch compartment 51, thus achieving an electrical connection between the electrode and the metal contact piece, enabling the laser emitting unit 2 to operate normally. Simultaneously, the horizontal movement of the lever 52 causes the linear rack to rotate the gear 53 clockwise, causing the rotating reflector 55 to deviate from the output light path of the laser emitting unit 2. At this time, the laser emitted by the laser emitting unit 2 will smoothly pass through the beam expander 4 and be directed towards the user's observation direction. The switching of the optical path and the laser start-up process are very convenient, and the user's gaze direction is the laser's pointing direction.

[0029] To further improve the convenient switching and automatic reset capability between the laser emission path and the telescope optical path, a spring retaining ring 58 is provided on the straight rod 52, which surrounds the surface of the straight rod 52 and is fixedly installed. A retaining ring 59 is fixedly installed inside the switch compartment 51, and the straight rod 52 passes through the retaining ring 59, which is circular. The straight rod 52 passes through the through hole of the retaining ring 59. A reset spring 510 is also surrounded on the straight rod 52, located between the spring retaining ring 58 and the retaining ring 59, and is fixedly connected to both the spring retaining ring 58 and the retaining ring 59 respectively. When the straight rod 52 is pressed, the spring retaining ring 58 will compress the reset spring 510. When the user releases the pressure, the reset spring 510 will automatically reset the straight rod 52 to its initial position under the action of elasticity. Intermittent use of the laser emitting unit 2 to emit lasers, without having to keep it on for a long time, can also save energy and increase the service life of the bird deterrent device.

[0030] like Figure 4 As shown, the telescope optical path unit 3 includes a first tube 31, a second tube 32, a fixed reflector 33, and an eyepiece 34. The first tube 31 and the second tube 32 each have a through-channel and a second channel, respectively, with their central axes perpendicular to each other. The first channel communicates with the second opening 12 and the second channel. A fixed reflector 33 is located at the end of the second tube 32 closest to the first tube 31, parallel to the rotating reflector 55 in its initial position. An eyepiece 34 is located at the end of the second tube 32 furthest from the first tube 31, situated on the reflected light path of the fixed reflector 33. Through continuous light path reflection, external light reaches the user's eye directly.

[0031] In a preferred embodiment of the present invention, both the fixed reflector 33 and the rotating reflector 55 in their initial positions form a 45° angle with the laser emission direction of the laser emitting unit 2. The fabrication of such a fixed reflector 33 and rotating reflector 55 is relatively simple.

[0032] like Figure 1 and Figure 2 As shown, the present invention also includes a power supply unit, which is disposed at the end of the cylinder 1 away from the first opening 11 and is electrically connected to the laser emitting unit 2. The power supply unit is used to provide energy for the laser emitting unit 2 to operate.

[0033] In addition, the present invention also provides a method for using a bird deterrent device, comprising the following steps: S1: Configure the above-mentioned bird deterrent device; the telescope optical path unit 3 includes a first tube 31, a second tube 32, a fixed reflector 33 and an eyepiece 34, the rotating reflector 55 is located on the incident light path of the fixed reflector 33, and the eyepiece 34 is located on the outgoing light path of the fixed reflector 33. S2: When operators patrol the breeding or planting area and find birds approaching aquatic products or fruits, they should hold the bird deterrent device with both hands and aim it at the location of the birds. S3: Hold the bird deterrent device level with both hands, and aim one eye at the eyepiece 34 of the telescope optical path unit 3 to achieve close observation. External light passes through the beam expander 4, the rotating reflector 55, the first tube 31 and the second tube 32 in sequence, and finally reaches the operator's eye. Adjust the position of the bird deterrent device with both hands so that the bird's head is in the field of view of the telescope optical path unit 3. After confirming that the bird is doing something harmful to aquatic products or fruits, it is identified as a harmful bird. S4: Maintain the current posture of the handheld bird deterrent device, press the end of the straight rod 52 extending from the third opening 57 of the switch compartment 51 with your finger. The straight rod 52 slides into the switch compartment 51. The linear rack on the straight rod 52 drives the gear 53 to rotate clockwise, and the swing arm 54 on the gear 53 drives the rotating reflector 55 to rotate relative to the cylinder 1. The rotating reflector 55 no longer blocks the light path of the laser emitting unit 2. When the straight rod 52 is pressed to the limit position, the electrode 100 on the straight rod 52 abuts against the metal contact 200 on the inner surface of the switch compartment 51. The laser emitting unit 2 then outputs a laser. After passing through the beam expanding mechanism 4, the laser is directed towards the location of the harmful bird. Swing the cylinder 1, causing the expanded and thickened laser beam to move randomly within the vicinity of the location of the harmful bird. This causes the birds to have the visual illusion that the thickened laser beam is a physical stick. In order to avoid being hit by the stick, they will quickly flee, thus achieving timely deflection of the predatory birds.

[0034] This invention integrates the laser emission path and the incident path of the telescope optical path unit. When a finger presses the straight rod, the linear rack on the rod drives the gear and the rotating mirror to rotate, switching the optical path of the telescope optical path unit to the optical path of the laser emission unit and achieving continuous laser output. When the finger is released, the straight rod automatically resets under the action of the return spring, thereby resetting the laser emission unit, gear, and rotating mirror, restoring the optical path of the telescope optical path unit. This enables rapid switching between human eye aiming and laser beam amplification for scare away birds, greatly improving the efficiency of dispersing harmful birds.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bird-repelling device, characterized in that, include: A hollow cylinder (1) has a first opening (11) at one end of the cylinder (1) in the axial extension direction and a second opening (12) on the side surface of the cylinder (1) in the radial extension direction. The laser emitting unit (2) is located inside the cylinder (1) and at one end away from the first opening (11); The telescope optical path unit (3) is set at the second opening (12) of the cylinder (1) and is connected to the inside of the cylinder (1); The beam expansion mechanism (4) is set at the first opening (11) of the cylinder (1) and is used to expand the laser emitted by the laser emitting unit (2) or to guide the light from outside the cylinder (1) into the inside of the cylinder (1) and the telescope optical path unit (3). The switch switching unit (5) is located inside the cylinder (1) to block the light output path of the laser emitting unit (2) and reflect the external light through the second opening (12) into the telescope optical path unit (3), or enable the laser emitting unit (2) to work so that the laser passes through the cylinder (1) and the beam expanding mechanism (4) in sequence and is emitted outward. The switch switching unit (5) includes a hollow switch compartment (51), a straight rod (52), a gear (53), a swing rod (54), and a rotating reflector (55); the switch compartment (51) is located on the side surface of the cylinder (1), and a hollow first cavity (56) is provided inside the switch compartment (51). A third opening (57) is provided at one end of the switch compartment (51), and a fourth opening (13) is provided on the side surface of the cylinder (1). The first cavity (56) is connected to the third opening (57) and the fourth opening (13) respectively; the straight rod (52) passes through the third opening (57). And extends into the first cavity (56) of the switch compartment (51), the surface of the straight rod (52) is slidably connected to the inner surface of the first cavity (56); the gear (53) is rotatably connected to the switch compartment (51), one end of the swing rod (54) is fixedly connected to the side surface of the gear (53), and the other end of the swing rod (54) passes through the fourth opening (13) and extends into the cylinder (1); a rotating reflector (55) is provided at the end of the swing rod (54) away from the gear (53); the rotating reflector (55) located in the initial position is connected to the beam expander (4) and the telescope optical path unit (3) respectively; The telescope optical path unit (3) includes a first tube (31), a second tube (32), a fixed reflector (33), and an eyepiece (34); the central axes of the first tube (31) and the second tube (32) are arranged perpendicular to each other; a fixed reflector (33) is provided at the end of the second tube (32) close to the first tube (31), and the fixed reflector (33) is arranged parallel to the rotating reflector (55) at the initial position; an eyepiece (34) is provided at the end of the second tube (32) away from the first tube (31), and the eyepiece (34) is located on the reflected light path of the fixed reflector (33).

2. The bird-repelling device according to claim 1, characterized in that, A straight rack is also provided on the surface of the straight rod (52) near the fourth opening (13); a gear (53) is provided on the side of the switch compartment (51) near the fourth opening (13), and the gear (53) is also meshed with the straight rack. A rocker arm (54) is also provided on the side of the gear (53) away from the straight rod (52).

3. A bird-repelling device according to claim 2, characterized in that, A spring retaining ring (58) is provided on the straight rod (52), and the spring retaining ring (58) surrounds the surface of the straight rod (52) and is fixedly provided; a retaining ring (59) is fixedly provided inside the switch compartment (51), and the straight rod (52) passes through the retaining ring (59); a return spring (510) is also provided around the straight rod (52), and the return spring (510) is provided between the spring retaining ring (58) and the retaining ring (59), and is fixedly connected to the spring retaining ring (58) and the retaining ring (59) respectively.

4. A bird-repelling device according to claim 3, characterized in that, An electrode (100) is provided at the end of the straight rod (52) that extends into the switch compartment (51). A metal contact (200) is provided on the inner surface of the switch compartment (51). The electrode (100) and the metal contact (200) are electrically connected to the switch contacts of the laser emitting unit (2). When the electrode (100) contacts the metal contact (200), the laser emitting unit (2) is enabled and outputs laser. When the electrode (100) separates from the metal contact (200), the laser emitting unit (2) stops outputting laser.

5. A bird-repelling device according to claim 4, characterized in that, The first tube (31) and the second tube (32) are respectively provided with a through first channel and a through channel, and the first channel is connected to the second opening (12) and the second channel respectively.

6. A bird-repelling device according to claim 4, characterized in that, The fixed reflector (33) and the rotating reflector (55) at the initial position are both at a 45° angle to the laser emission direction of the laser emitting unit (2).

7. A bird-repelling device according to claim 4, characterized in that, The beam expanding mechanism (4) adopts either the Kepler beam expanding method of a transmission lens or the reflective beam expanding method of a curved mirror.

8. A bird-repelling device according to claim 4, characterized in that, The laser wavelength of the laser emitting unit (2) is 510nm-570nm green light.

9. A bird-repelling device according to claim 4, characterized in that, It also includes a power supply unit, which is located at the end of the cylinder (1) away from the first opening (11) and is electrically connected to the laser emitting unit (2).

10. A method of using a bird-repelling device, characterized in that, Includes the following steps: S1: The bird deterrent device as described in any one of claims 5-9 is configured; the telescope optical path unit (3) includes a first tube (31), a second tube (32), a fixed reflector (33) and an eyepiece (34), the rotating reflector (55) is located on the incident light path of the fixed reflector (33), and the eyepiece (34) is located on the outgoing light path of the fixed reflector (33); S2: When operators patrol the breeding or planting area and find birds approaching aquatic products or fruits, they should hold the bird deterrent device with both hands and aim it at the location of the birds. S3: Hold the bird deterrent device with both hands and aim one eye at the eyepiece (34) of the telescope optical path unit (3) to achieve close observation. The external light passes through the beam expander (4), the rotating reflector (55), the first tube (31) and the second tube (32) in sequence, and finally reaches the operator's eye. Adjust the position of the bird deterrent device with both hands so that the bird's head is in the field of view of the telescope optical path unit (3). After confirming that the bird has actions that harm aquatic products or fruits, it is identified as a harmful bird. S4: Maintain the current posture of the handheld bird deterrent device, press the end of the straight rod (52) extending out of the third opening (57) of the switch compartment (51) with your finger, the straight rod (52) slides into the switch compartment (51), the linear rack on the straight rod (52) drives the gear (53) to rotate clockwise, and the swing arm (54) on the gear (53) drives the rotating reflector (55) to rotate relative to the cylinder (1), the rotating reflector (55) no longer blocks the light path of the laser emitting unit (2); when the straight rod (52) is pressed to At the extreme position, after the electrode (100) on the straight rod (52) abuts against the metal contact (200) on the inner surface of the switch compartment (51), the laser emitting unit (2) outputs laser. After the laser passes through the beam expanding mechanism (4), it is directed towards the location of the pest bird. By swinging the cylinder (1), the expanded and thickened laser beam moves randomly within the neighborhood of the location of the pest bird, causing the bird to have the visual illusion that the thickened laser beam is a physical stick. In order to avoid being hit by the stick, the bird will quickly escape, thereby achieving timely removal of the predatory pest bird.

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