Bird repelling device and use method

Abstract

The invention provides a bird repelling device and a use method, and belongs to the technical field of laser bird repelling, the bird repelling device comprises a hollow cylinder, one end of the cylinder in the axial extension direction is provided with a first opening, and the side surface of the cylinder extending in the radial direction is provided with a second opening; the laser emission unit is arranged in the cylinder and is far away from one end of the first opening; the telescopic light path unit is arranged at the second opening of the cylinder body and is communicated with the interior of the cylinder body; the beam expanding mechanism is arranged at the first opening of the barrel and used for expanding the laser emitted by the laser emitting unit or guiding light outside the barrel into the barrel and the telescopic light path unit; and the switch switching unit is arranged in the barrel body and is used for shielding an emergent light path of the laser emitting unit and reflecting external light into the telescopic light path unit through the second opening, or enabling the laser emitting unit to work and enabling the laser to be emitted outwards through the barrel body and the beam expanding mechanism in sequence. By integrating laser emission and telescopic light paths, the portability and bird repelling efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of laser bird-repelling technology, and in particular to a bird-repelling device and a use method thereof. Background Art

[0002] High-value aquatic and fruit planting areas are often attacked by birds all year round, causing significant economic losses to breeders and growers. This is especially true when the products are ripe, when large numbers of birds come to peck at the food. Birds have a high degree of adaptability to the environment, so conventional bird-repelling methods only have short-term effects and it is difficult to maintain long-term effects. There are mainly the following bird-repelling methods at present: 1. Manual bird-repelling, using a long pole or hand gestures. This method has little effect on birds that are far away; 2. Loud noise bird-repelling, firing air-burst bombs at the flock of birds, using the huge noise after the air-burst to scare the birds. This method is cumbersome to implement, and after the air-burst, the birds will quickly return. Long-term use is not only costly but also has limited effect; 3. Ultrasonic bird-repelling, using ultrasound to stimulate birds, causing them to feel physiological discomfort, thereby achieving the purpose of driving them away. However, on the one hand, this method has a limited range of action, and a large-scale deployment requires multiple ultrasonic generators, which has high installation and maintenance costs. Moreover, this method only has a good effect on specific birds, and has poor universality. It also requires a period of cumulative use to produce an effect, and cannot be used for instant bird-repelling tasks; 4. Laser bird-repelling, using the strong light of the laser to illuminate the bird's eyes, causing the birds to feel uncomfortable, thereby achieving the purpose of driving them away. This method uses laser to stimulate the bird's eyes, and the laser needs to be aimed at the bird's eyes. It is very difficult to operate at a long distance, and it may cause damage to the bird's eyes.

[0003] Based on the above situation, a bird-repelling device is provided, which uses a laser virtual rod to utilize the characteristics of bird vision, uses a laser of a specific wavelength to expand the beam and wave it around the birds, and the repelling efficiency and speed are greatly improved. It is especially suitable for the timely repelling of hunting harmful birds, which is very necessary. Summary of the invention

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

[0005] The technical solution of the present invention is achieved in this way:

[0006] In one aspect, the present invention provides a bird-repelling device, comprising:

[0007] A hollow cylinder, one end of the cylinder in the axial extension direction is provided with a first opening, and a side surface of the cylinder extending in the radial direction is provided with a second opening;

[0008] A laser emitting unit is disposed in the cylinder and at one end away from the first opening;

[0009] The telescopic optical path unit is arranged at the second opening of the barrel and communicated with the interior of the barrel;

[0010] A beam expansion mechanism is provided at the first opening of the barrel, and is used to expand the laser emitted by the laser emitting unit, or to guide the light outside the barrel into the barrel and the telescopic optical path unit;

[0011] The switch switching unit is arranged inside the barrel, and is used to block the light output path of the laser emitting unit and reflect the external light into the telescopic optical path unit through the second opening, or enable the laser emitting unit to work so that the laser passes through the barrel and the beam expansion mechanism in sequence and is emitted outward.

[0012] On the basis of the above technical scheme, preferably, the switch switching unit includes a hollow switch cabin, a straight rod, a gear, a rocker arm and a rotating reflector; the switch cabin is arranged on the side surface of the cylinder, a hollow first cavity is arranged inside the switch cabin, a third opening is arranged at one end of the switch cabin, a fourth opening is arranged correspondingly on the side surface of the cylinder, and the first cavity is respectively communicated with the third opening and the fourth opening; the straight rod is inserted into the third opening and extends into the first cavity of the switch cabin, and the surface of the straight rod is slidably connected to the inner surface of the first cavity; a linear rack is also arranged on the surface of the straight rod close to the fourth opening; a gear is arranged on the side of the switch cabin close to the fourth opening, the gear is rotatably connected to the switch cabin, the gear is also meshed with the linear rack, and a rocker arm is also arranged on the side of the gear away from the straight rod, one end of the rocker arm is fixedly connected to the side surface of the gear, and the other end of the rocker arm passes through the fourth opening and extends into the interior of the cylinder; a rotating reflector is arranged at one end of the rocker arm away from the gear; the rotating reflector located at the initial position is respectively connected to the beam expansion mechanism and the optical path of the telescopic optical path unit.

[0013] Preferably, a spring fixing ring is provided on the straight rod, which surrounds the surface of the straight rod and is fixedly arranged; a fixing clamp is fixedly arranged inside the switch cabin, and the straight rod is inserted into the fixing clamp; a return spring is also arranged around the straight rod, and the return spring is arranged between the spring fixing ring and the fixing clamp, and is fixedly connected to the spring fixing ring and the fixing clamp respectively.

[0014] Further preferably, an electrode is provided at the end of the straight rod extending into the switch cabin, and a metal contact is provided on the inner surface of the switch cabin, and 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, and when the electrode is separated from the metal contact, the laser emitting unit stops outputting laser.

[0015] Preferably, the telescopic optical path unit includes a first tube body, a second tube body, a fixed reflector and an eyepiece; the first tube body and the second tube body are respectively provided with a first channel and a second channel penetrating therein, and the central axes of the first tube body and the second tube body are arranged perpendicular to each other; the first channel is respectively communicated with the second opening and the second channel, a fixed reflector is arranged at one end of the second tube body close to the first tube body, the fixed reflector is arranged parallel to the rotating reflector in the initial position, and an eyepiece is arranged at one end of the second tube body away from the first tube body, and the eyepiece is located on the reflected light path of the fixed reflector.

[0016] Preferably, the fixed reflector and the rotating reflector in the initial position both form an angle of 45° with the laser emission direction of the laser emitting unit.

[0017] On the basis of the above technical solution, preferably, the beam expansion mechanism adopts a Kepler beam expansion method using a transmission lens or a reflective beam expansion method using a curved mirror.

[0018] On the basis of the above technical solution, preferably, the laser emitting unit has a laser wavelength of green light of 510nm-570nm.

[0019] On the basis of the above technical solution, preferably, it further includes a power supply unit, which is arranged at one end of the cylinder away from the first opening and is electrically connected to the laser emitting unit.

[0020] On the other hand, the present invention also provides a method for using a bird repellent device, comprising the following steps:

[0021] S1: The above-mentioned bird-repelling device is configured; the telescopic optical path unit includes a first tube body, a second tube body, 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;

[0022] S2: When the operator inspects the breeding area or planting area and finds birds approaching aquatic products or fruits, he / she should hold the bird repellent device with both hands and aim it at the location of the birds;

[0023] S3: Hold the bird-repelling device with both hands, aim one eye at the eyepiece of the telescopic optical path unit to achieve close observation, and the external light passes through the beam expansion mechanism, the rotating reflector, the first tube body and the second tube body in sequence, and finally reaches the operator's eyes; adjust the position of the bird-repelling device with both hands so that the head of the bird is in the field of view of the telescopic optical path unit, and after confirming that the bird has any action that harms aquatic products or fruits, it is identified as a harmful bird;

[0024] S4: Maintain the current posture of the handheld bird-repelling device, press the end of the third opening of the straight rod extending out of the switch cabin with a finger, the straight rod slides toward the inside of the switch cabin, the linear rack on the straight rod drives the gear to rotate clockwise, and the rocker bar on the gear drives the rotating reflector to rotate relative to the cylinder, and the rotating reflector no longer blocks the light output 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 sheet on the inner surface of the switch cabin, and the laser emitting unit outputs the laser, which is emitted to the location of the harmful bird after passing through the beam expansion mechanism, and the cylinder is waved to make the expanded and thickened laser beam move randomly within the neighborhood of the location of the harmful bird, so that the bird has a visual illusion that the thickened laser beam is a physical stick. In order to avoid being hit by the stick, it will quickly flee, thereby achieving timely expulsion of the hunting harmful bird.

[0025] The bird repelling device and the use method provided by the present invention have the following beneficial effects compared with the prior art:

[0026] (1) The bird-repelling device provided by the present invention is simple to operate, easy to carry, and can be used without special training. Compared with the existing laser bird-repelling method of stimulating bird eyes, 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 spot is enlarged by the beam expansion mechanism, it is waved near the location where the bird stays, so that the thickened laser beam will produce the effect of a virtual stick. The bird will instinctively flee when sensing the movement of the laser beam, thereby achieving the purpose of driving away. The aiming 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 dispersing birds can be guaranteed.

[0027] (2) By integrating the laser emission optical path and the incident optical path of the telescopic optical path unit, when the straight rod is pressed by a finger, the linear rack on the straight rod drives the gear and the rotating reflector to rotate, thereby switching the optical path of the telescopic 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 is automatically reset under the action of the reset spring, thereby resetting the laser emission unit, the gear and the rotating reflector, and restoring the optical path of the telescopic optical path unit, thereby achieving rapid switching between human eye aiming and laser beam expansion irradiation and expulsion, greatly improving the efficiency of dispersing harmful birds. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1A top view of a bird-repelling device and a method of using the device of the present invention;

[0030] Figure 2 A right side view of a bird repelling device and a method of using the present invention;

[0031] Figure 3 for Figure 2 AA section view;

[0032] Figure 4 for Figure 2 A partial enlarged schematic diagram of part B;

[0033] Figure 5 The present invention is a flow chart of the steps of a bird repelling device and a method of using the device.

[0034] Figure numerals: 1. barrel; 2. laser emitting unit; 3. telescopic optical path unit; 4. beam expansion mechanism; 5. switch switching unit; 11. first opening; 12. second opening; 51. switch cabin; 52. straight rod; 53. gear; 54. rocker arm; 55. rotating reflector; 56. first cavity; 57. third opening; 58. spring fixing ring; 59. fixing clamp; 510. reset spring; 100. electrode; 200. metal contact; 31. first tube body; 32. second tube body; 33. fixed reflector; 34. eyepiece. DETAILED DESCRIPTION

[0035] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The existing laser bird repellent strategy is to use strong laser light to illuminate the bird's eyes, causing discomfort to the bird and achieving the purpose of repelling it. This method uses laser to stimulate the bird's eyes and needs to aim the laser at the bird's eyes. It is very difficult to operate at a long distance, is not very effective, and may cause damage to the bird's eyes. In view of this, Figure 1-Figure 4 As shown, on the one hand, the present invention provides a bird-repelling device, comprising:

[0037] The hollow cylinder 1 has a first opening 11 at one end of the cylinder 1 in the axial direction, and a second opening 12 on the side surface of the cylinder 1 extending in the radial direction; the cylinder 1 has a rod-like profile, which is convenient for users to hold with one hand or both hands.

[0038] The laser emitting unit 2 is disposed in the barrel 1 at one end away from the first opening 11. The laser emitting unit 2 is used to produce laser light of a specific wavelength. As a preferred embodiment, the laser wavelength of the laser emitting unit 2 of the present invention is green light of 510nm-570nm.

[0039] The telescopic optical path unit 3 is arranged at the second opening 12 of the barrel 1 and is connected to the interior of the barrel 1; the telescopic optical path unit 3 is used to observe the current position of the bird, and by further combining with the diffusion mechanism 4, it realizes imaging of distant targets and achieves the effect of visual close observation, so that the operator can visually identify harmful birds and their behaviors.

[0040] The beam expansion mechanism 4 is arranged at the first opening 11 of the barrel 1, and is used to expand the laser emitted by the laser emitting unit 2, or to guide the light outside the barrel 1 into the inside of the barrel 1 and the telescopic optical path unit 3; the beam expansion mechanism 4 can multiply the light spot of the initial laser beam to form a thicker laser beam. Through the movement of the laser beam, the birds will have a visual illusion and mistake the laser beam for a physical stick.

[0041] The beam expansion mechanism 4 is arranged at the first opening 11 of the barrel 1, and is used to expand the laser emitted by the laser emitting unit 2, or to guide the light outside the barrel 1 into the inside of the barrel 1 and the telescopic optical path unit 3; the beam expansion mechanism 4 can multiply the light spot of the initial laser beam to form a thicker laser beam. Through the movement of the laser beam, the birds will have a virtual stick visual illusion and mistake the laser beam for a physical stick.

[0042] The beam expansion mechanism 4 of the present invention adopts a Kepler beam expansion method using a transmission lens or a reflective beam expansion method using a curved mirror. When the Kepler beam expansion method using a transmission lens is adopted, the beam expansion mechanism 4 includes two convex lenses, both of which are arranged in 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 the focal lengths of the two convex lenses. When the reflective beam expansion method using a curved mirror is adopted, it includes at least one convex reflector and one concave reflector, and a laser beam parallel to the optical axis of the convex reflector is incident on the convex reflector, and the convex reflector reflects the laser onto the concave reflector, and the concave reflector reflects again to form an expanded laser beam. The above two forms are only an introduction to the principle of laser beam expansion, and are not regarded as limitations on the scheme of the beam expansion mechanism. The structure of the beam expansion mechanism can also be other ways to expand the spot of the laser beam. The switch unit 5 is arranged inside the barrel 1, and is used to block the light path of the laser emitting unit 2, and reflect the external light into the telescopic optical path unit 3 through the second opening 12, or enable the laser emitting unit 2 to work, so that the laser passes through the barrel 1 and the beam expansion mechanism 4 in sequence and is emitted outward.

[0043] The switch unit 5 can switch the laser output optical path and the telescopic optical path, and can also start or shut down the laser emission unit, thereby realizing the multiplexing of pipelines and the arrangement of devices in a compact structure, thereby improving the portability of the bird-repelling device.

[0044] like Figure 3 and Figure 4 As shown, the switch switching unit 5 includes a hollow switch cabin 51, a straight rod 52, a gear 53, a swing rod 54 and a rotating reflector 55; the switch cabin 51 is arranged on the side surface of the cylinder 1, and a hollow first cavity 56 is arranged inside the switch cabin 51, a third opening 57 is arranged at one end of the switch cabin 51, and a fourth opening 13 is correspondingly arranged on the side surface of the cylinder 1, and the first cavity 56 is communicated with the third opening 57 and the fourth opening 13 respectively; the straight rod 52 is inserted into the third opening 57 and extends into the first cavity 56 of the switch cabin 51, and the surface of the straight rod 52 is slidably connected with the inner surface of the first cavity 56; the straight rod 5 A linear rack is also provided on the surface of the side close to the fourth opening 13; a gear 53 is provided on the side of the switch cabin 51 close to the fourth opening 13, the gear 53 is rotatably connected to the switch cabin 51, and the gear 53 is also meshed with the linear rack; a swing rod 54 is also provided on the side of the gear 53 away from the straight rod 52, 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 interior of the barrel 1; a rotating reflector 55 is provided on the end of the swing rod 54 away from the gear 53; the rotating reflector 55 located at the initial position is respectively connected to the beam expansion mechanism 4 and the telephoto optical path unit 3.

[0045] An electrode 100 is provided at the end of the straight rod 52 extending into the switch cabin 51, and a metal contact 200 is provided on the inner surface of the switch cabin 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, and when the electrode 100 separates from the metal contact 200, the laser emitting unit 2 stops outputting laser.

[0046] The switch switching unit 5 has the functions of switching the optical path and driving the laser emitting unit 2. When the straight rod 52 is in the initial position, the rotating reflector 55 will block the outgoing optical path of the laser emitting unit 2. At this time, the beam expansion mechanism 4, the second opening 12 and the telescopic optical path unit 3 form a complete reflective optical path, which sends the ambient light into the user's eyes to achieve environmental observation. When the end of the straight rod 52 extending out of the third opening 57 is pressed, the straight rod 52 slides horizontally relative to the switch compartment 51 until the maximum position, and the electrode set on the straight rod 52 contacts the metal contact sheet set on the inner surface of the switch compartment 51, thereby realizing the electrical connection between the electrode and the metal contact sheet, so that the laser emitting unit 2 works normally. At the same time, the horizontal movement of the straight rod 52 drives the gear 53 to rotate clockwise, so that the rotating reflector 55 deviates from the outgoing optical 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 expansion mechanism 4 and be emitted in the direction of the user's observation. The process of switching the optical path and starting the laser is very convenient, and the direction of the user's sight is the direction of the laser.

[0047] In order to further improve the convenient switching and automatic reset capabilities between the laser emission optical path and the telescopic optical path, a spring fixing ring 58 is provided on the straight rod 52, and the spring fixing ring 58 surrounds the surface of the straight rod 52 and is fixedly arranged; a fixing snap ring 59 is fixedly arranged inside the switch cabin 51, and the straight rod 52 is inserted on the fixing snap ring 59, and the fixing snap ring 59 is annular, and the straight rod 52 is inserted in the through hole of the fixing snap ring 59; a reset spring 510 is also arranged around the straight rod 52, and the reset spring 510 is arranged between the spring fixing ring 58 and the fixing snap ring 59, and is fixedly connected to the spring fixing ring 58 and the fixing snap ring 59 respectively. When the straight rod 52 is pressed, the spring fixing ring 58 will squeeze the reset spring 510. When the user lets go, the reset spring 510 drives the straight rod 52 to automatically reset and return to the initial position under the action of elastic force. Intermittent use of the laser emitting unit 2 to emit laser without having to keep it turned on for a long time can also achieve energy-saving effects and increase the use time of the bird-repelling device.

[0048] like Figure 4 As shown, the telescopic optical path unit 3 includes a first tube body 31, a second tube body 32, a fixed reflector 33 and an eyepiece 34; the first tube body 31 and the second tube body 32 are respectively provided with a first channel and a second channel penetrating therein, and the central axes of the first tube body 31 and the second tube body 32 are arranged perpendicular to each other; the first channel is respectively connected with the second opening 12 and the second channel, and the end of the second tube body 32 close to the first tube body 31 is provided with a fixed reflector 33, and the fixed reflector 33 is arranged parallel to the rotating reflector 55 at the initial position, and the end of the second tube body 32 away from the first tube body 31 is provided with an eyepiece 34, and the eyepiece 34 is located on the reflected light path of the fixed reflector 33. Through continuous light path reflection, the external light reaches the user's eyes directly.

[0049] As a preferred embodiment of the present invention, the fixed reflector 33 and the rotating reflector 55 in the initial position both form an angle of 45° with the laser emission direction of the laser emitting unit 2. Such a fixed reflector 33 and a rotating reflector 55 are relatively simple to prepare.

[0050] like Figure 1 and Figure 2 As shown, the present invention further includes a power supply unit, which is disposed at one end of the barrel 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 the laser emitting unit 2 with energy for operation.

[0051] In addition, the present invention also provides a method for using the bird repellent device, comprising the following steps:

[0052] S1: configure the above-mentioned bird-repelling device; the telescopic optical path unit 3 includes a first tube body 31, a second tube body 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;

[0053] S2: When the operator inspects the breeding area or planting area and finds birds approaching aquatic products or fruits, he / she should hold the bird repellent device with both hands and aim it at the location of the birds;

[0054] S3: Hold the bird-repelling device with both hands, aim one eye at the eyepiece 34 of the telescopic optical path unit 3, and observe closely. 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 eyes of the operator; adjust the position of the bird-repelling device with both hands so that the head of the bird is in the field of view of the telescopic optical path unit 3. After confirming that the bird has any action that harms aquatic products or fruits, it is identified as a harmful bird;

[0055] S4: Maintain the current posture of the handheld bird-repelling device, press the end of the straight rod 52 extending out of the third opening 57 of the switch cabin 51 with a finger, and the straight rod 52 slides toward the inside of the switch cabin 51. The linear rack on the straight rod 52 drives the gear 53 to rotate clockwise, and the swing rod 54 on the gear 53 drives the rotating reflector 55 to rotate relative to the cylinder 1, and 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 piece 200 on the inner surface of the switch cabin 51, and the laser emitting unit 2 outputs the laser, and the laser passes through the beam expansion mechanism 4 and is emitted to the location of the harmful bird. The cylinder 1 is waved, so that the expanded and thickened laser beam moves randomly within the neighborhood of the location of the harmful bird, so that the bird has a visual illusion that the thickened laser beam is a physical stick. In order to avoid being hit by the stick, it will quickly escape, thereby achieving timely expulsion of the hunting harmful bird.

[0056] The present invention integrates the laser emission optical path and the incident optical path of the telescopic optical path unit. When the straight rod is pressed by a finger, the linear rack on the straight rod drives the gear and the rotating reflector to rotate, thereby realizing the switching of the optical path of the telescopic 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 is automatically reset under the action of the reset spring, thereby resetting the laser emission unit, the gear and the rotating reflector, and restoring the optical path of the telescopic optical path unit, realizing the rapid switching between human eye aiming and laser beam expansion irradiation and expelling, and greatly improving the efficiency of dispersing harmful birds.

[0057] 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 in the protection scope of the present invention.

Claims

1. A bird repelling device, characterized in that: include: A hollow cylinder (1), wherein one end of the cylinder (1) in the axial extension direction is provided with a first opening (11), and a side surface of the cylinder (1) extending in the radial direction is provided with a second opening (12); A laser emitting unit (2) is arranged in the cylinder (1) at one end away from the first opening (11); A telescopic optical path unit (3) is arranged at the second opening (12) of the barrel (1) and is in communication with the interior of the barrel (1); A beam expansion mechanism (4) is arranged at the first opening (11) of the barrel (1) and is used to expand the laser beam emitted by the laser emitting unit (2), or to guide the light outside the barrel (1) into the barrel (1) and the telescopic optical path unit (3); The switch switching unit (5) is arranged inside the barrel (1) and is used to block the light output path of the laser emitting unit (2) and reflect external light into the telescopic light path unit (3) through the second opening (12), or enable the laser emitting unit (2) to work so that the laser passes through the barrel (1) and the beam expanding mechanism (4) in sequence and is emitted outward.

2. A bird repelling device according to claim 1, characterized in that: The switch switching unit (5) comprises a hollow switch cabin (51), a straight rod (52), a gear (53), a swing rod (54) and a rotating reflector (55); the switch cabin (51) is arranged on the side surface of the cylinder (1); a hollow first cavity (56) is arranged inside the switch cabin (51); a third opening (57) is arranged at one end of the switch cabin (51); a fourth opening (13) is correspondingly arranged on the side surface of the cylinder (1); the first cavity (56) is respectively connected to the third opening (57) and the fourth opening (13); the straight rod (52) is inserted into the third opening (57) and extends into the first cavity (56) of the switch cabin (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 of the switch cabin (52) on the side close to the fourth opening (13); a gear (53) is provided on the side of the switch cabin (51) close to the fourth opening (13), the gear (53) is rotatably connected to the switch cabin (51), the gear (53) is also meshed with the linear rack, a swing rod (54) is also provided on the side of the gear (53) away from the straight rod (52), 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 interior of the barrel (1); a rotating reflector (55) is provided on the end of the swing rod (54) away from the gear (53); the rotating reflector (55) located at the initial position is respectively connected to the beam expansion mechanism (4) and the telephoto optical path unit (3) optical path.

3. A bird repelling device according to claim 2, characterized in that: The straight rod (52) is provided with a spring fixing ring (58), which surrounds the surface of the straight rod (52) and is fixedly arranged; a fixing snap ring (59) is fixedly arranged inside the switch cabin (51), and the straight rod (52) is inserted into the fixing snap ring (59); a return spring (510) is also arranged around the straight rod (52), and the return spring (510) is arranged between the spring fixing ring (58) and the fixing snap ring (59), and is fixedly connected to the spring fixing ring (58) and the fixing snap ring (59) respectively.

4. A bird repelling device according to claim 3, characterized in that: An electrode (100) is arranged at the end of the straight rod (52) extending into the switch cabin (51), and a metal contact sheet (200) is arranged on the inner surface of the switch cabin (51). The electrode (100) and the metal contact sheet (200) are respectively electrically connected to the switch contact of the laser emitting unit (2); when the electrode (100) contacts the metal contact sheet (200), the laser emitting unit (2) is enabled and outputs laser, and when the electrode (100) and the metal contact sheet (200) are separated, the laser emitting unit (2) stops outputting laser.

5. The bird repelling device according to claim 2, characterized in that: The telescopic optical path unit (3) comprises a first tube body (31), a second tube body (32), a fixed reflector (33) and an eyepiece (34); a first channel and a second channel are respectively provided inside the first tube body (31) and the second tube body (32); the central axes of the first tube body (31) and the second tube body (32) are arranged perpendicular to each other; the first channel is respectively connected to the second opening (12) and the second channel; a fixed reflector (33) is provided at one end of the second tube body (32) close to the first tube body (31); the fixed reflector (33) is arranged parallel to the rotating reflector (55) at the initial position; an eyepiece (34) is provided at one end of the second tube body (32) away from the first tube body (31); the eyepiece (34) is located on the reflected optical path of the fixed reflector (33).

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

7. The bird repelling device according to claim 1, characterized in that: The beam expansion mechanism (4) adopts a Kepler beam expansion method using a transmission lens or a reflective beam expansion method using a curved mirror.

8. The bird repelling device according to claim 1, characterized in that: The laser emitting unit (2) emits green light with a laser wavelength of 510nm-570nm.

9. The bird repelling device according to claim 1, characterized in that: It also comprises a power supply unit, which is arranged at one end of the barrel (1) away from the first opening (11) and is electrically connected to the laser emitting unit (2).

10. A method for using a bird repellent device, characterized in that: The steps include: S1: A bird-repelling device as described in any one of claims 5 to 9 is configured; the telescopic optical path unit (3) comprises a first tube body (31), a second tube body (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 the operator inspects the breeding area or planting area and finds birds approaching aquatic products or fruits, he / she should hold the bird repellent device with both hands and aim it at the location of the birds; S3: Hold the bird-repelling device with both hands and aim one eye at the eyepiece (34) of the telescopic optical path unit (3) to achieve close observation. External light passes through the beam expansion mechanism (4), the rotating reflector (55), the first tube (31) and the second tube (32) in sequence and finally reaches the eyes of the operator; adjust the position of the bird-repelling device with both hands so that the head of the bird is located in the field of view of the telescopic optical path unit (3). After confirming that the bird has any action that harms aquatic products or fruits, it is identified as a harmful bird; S4: Maintaining the current posture of the handheld bird-repelling device, the end of the straight rod (52) extending out of the third opening (57) of the switch compartment (51) is pressed with a finger, and the straight rod (52) slides toward the inside of the switch compartment (51), and the linear rack on the straight rod (52) drives the gear (53) to rotate clockwise, and the swing rod (54) on the gear (53) drives the rotating reflector (55) to rotate relative to the cylinder (1), and the rotating reflector (55) no longer blocks the light path of the laser emitting unit (2); when the straight rod (52) is pressed to When the electrode (100) on the straight rod (52) abuts against the metal contact piece (200) on the inner surface of the switch compartment (51), the laser emitting unit (2) outputs laser light, and the laser light passes through the beam expansion mechanism (4) and is emitted toward the location of the harmful bird. The cylinder (1) is waved, so that the expanded and thickened laser beam randomly moves within the vicinity of the location of the harmful bird, causing the bird to have a visual illusion that the thickened laser beam is a physical stick. In order to avoid being hit by the stick, the bird will quickly flee, thereby achieving timely expulsion of the hunting harmful bird.

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