High-power searchlight for plant protection unmanned aerial vehicle

Abstract

The utility model discloses a high-power searchlight for a plant protection unmanned aerial vehicle. The high-power searchlight comprises an unmanned aerial vehicle foot stand and a searchlighting mechanism installed on the unmanned aerial vehicle foot stand through a supporting structure. The searchlighting mechanism is composed of a shell sleeve and an LED lamp panel, and a sealing structure is arranged in the shell sleeve. And a heat dissipation structure is formed on the shell sleeve. According to the searchlighting mechanism, firstly, the erecting position and the searchlighting irradiation angle of the searchlighting equipment can be adjusted at the same time through the tightness adjusting assembly, the purpose of facilitating operation of a user is achieved, and the searchlighting mechanism is simple in assembling structure and low in cost; secondly, when the rear shell and the front shell are assembled for use, water can be effectively prevented from entering the shell sleeve through the arrangement of the sealing structure, and the safety protection effect on the LED lamp panel is achieved; and finally, the LED lamp panel transmits heat to the rear shell through the heat-conducting silicone grease, the heat of the rear shell is taken away through the heat dissipation fins under the action of external flowing air, and safety and reliability of the LED lamp panel during long-time high-power illumination are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of unmanned aerial vehicle searchlights, in particular to a high-power searchlight for plant protection unmanned aerial vehicles. Background Art

[0002] The development of plant protection unmanned aerial vehicles has played a huge role in the intelligent development of agriculture. At present, the functions and roles of plant protection unmanned aerial vehicles are also becoming more and more important. In order to improve the use efficiency of plant protection machines or avoid working in extreme weather (such as the too high daytime temperature in Southeast Asia in summer), a considerable number of plant protection unmanned aerial vehicle users choose to operate at night, thus generating a need to install lighting lamps on unmanned aerial vehicles.

[0003] Among the existing lighting lamps of quite a number of plant protection unmanned aerial vehicles, although they can achieve basic lighting functions, in order to keep the lighting equipment stable when flying with the plant protection unmanned aerial vehicle, usually two sets of adjustment mechanisms need to be set up. First, one set of adjustment mechanism is used to adjust the installation position of the lighting equipment relative to the unmanned aerial vehicle, and then another set of adjustment mechanism is used to adjust the irradiation angle of the lighting equipment, resulting in the problems of complex structure and high cost of the existing lighting equipment. Moreover, due to the shell cover of the existing lighting equipment being only simply docked by buckles during assembly, its sealing performance is poor, and there is a problem that water enters the shell cover and damages the internal circuit.

[0004] Based on the above defects, a high-power searchlight for plant protection unmanned aerial vehicles is provided. Content of the Utility Model

[0005] The purpose of the utility model is to provide a high-power searchlight for plant protection unmanned aerial vehicles in order to solve the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: A high-power searchlight for plant protection unmanned aerial vehicles, comprising a drone tripod and a searchlight mechanism installed on the drone tripod through a support structure;

[0007] The searchlight mechanism is composed of a shell sleeve and an LED lamp board installed in the shell sleeve, and a sealing structure for protecting the LED lamp board is arranged in the shell sleeve;

[0008] A heat dissipation structure acting on the LED lamp board is formed on the shell sleeve.

[0009] Preferably, the support structure includes a fixed bracket sleeved outside the drone tripod and a tension adjustment component arranged on the fixed bracket, and a universal joint for cooperating with the fixed bracket for movable docking is fixedly arranged on the shell sleeve.

[0010] Preferably, the side part of the fixed bracket is an open structure, the universal joint is movably embedded in the opening, and the tension adjustment component controls the size of the opening degree.

[0011] Preferably, the tightening and loosening adjustment assembly is a bolt screwed to the side of the fixed bracket.

[0012] Preferably, the LED light board is a dual constant current source PCB, and a lens for covering the lamp beads is fixedly arranged on the LED light board. The lenses are distributed on the LED light board in a rectangular array along with the lamp beads.

[0013] Before the drone takes off, the LED light board provides 20-watt low-power lighting. After the drone takes off, the LED light board provides 80-watt high-power lighting.

[0014] Preferably, the shell sleeve is composed of a rear shell, a front shell assembled with the rear shell, and a glass plate installed on the front shell.

[0015] Preferably, the sealing structure includes a docking ring fixedly arranged on the rear shell, a groove formed in the front shell for fitting the docking ring to be embedded, and a sealing ring embedded in the groove for abutting against the end of the docking ring.

[0016] Preferably, the rear shell is fixed to the LED light board through sealant. A glue injection port for injecting the sealant is formed in the rear shell. A hole groove for the lens to penetrate is formed in the front shell. The front shell is fixedly bonded to the glass plate through double-sided adhesive tape.

[0017] Preferably, the heat dissipation structure includes a butting piece fixedly arranged in the rear shell and attached to the LED light board. A cavity is formed in the rear shell. Heat-conducting silicone grease for heat conduction is coated on the end faces of the LED light board corresponding to the butting piece and the cavity.

[0018] Preferably, the heat dissipation structure includes heat dissipation fins formed on the rear shell.

[0019] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:

[0020] 1. In this application, the tightening and loosening adjustment assembly can adjust the tightness between the fixed bracket and the drone leg, and at the same time can adjust the tightness relationship between the fixed bracket and the universal joint. After the adjustment is completed, the user only needs to tighten the tightening and loosening adjustment assembly to synchronously fix the searchlight mechanism and the fixed bracket, so as to achieve the purpose of facilitating the operation of the user. Moreover, the assembly structure of the searchlight mechanism is simple and the cost is low.

[0021] 2. In this application, the LED light board is controlled by a dual constant current source, which ensures that a single lamp will not cause the entire lamp to fail after a fault, increasing the reliability of the LED light board.

[0022] 3. In the present application, when the rear shell is assembled with the front shell, the inner and outer sides of the docking ring are in contact with the inner wall of the groove, and the end of the docking ring is in contact with the sealing ring, thereby effectively preventing water from entering the shell and providing safety protection for the LED light panel in the shell.

[0023] 4. In this application, the LED light board transfers heat to the back shell through thermal grease, and the heat dissipation fins take away the heat of the back shell through the flow of air from the outside, ensuring the safety and reliability of the LED light board during long-term high-power lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A schematic diagram of the assembly structure of a UAV tripod and a searchlight mechanism provided according to an embodiment of the utility model is shown;

[0025] Figure 2 A schematic top view of a searchlight mechanism provided according to an embodiment of the utility model is shown;

[0026] Figure 3 Shown according to Figure 2 The sectional view at AA is provided;

[0027] Figure 4 A schematic diagram of the explosion structure of the searchlight mechanism provided according to an embodiment of the utility model is shown;

[0028] Figure 5 A schematic diagram of the inner structure of a rear shell provided according to an embodiment of the utility model is shown.

[0029] Legend:

[0030] 1. UAV tripod; 101. fixing bracket; 102. bolt;

[0031] 2. Searchlight mechanism; 201. Universal head;

[0032] 3. rear shell; 301. docking ring; 302. butt patch; 303. cavity groove; 304. glue injection port;

[0033] 4. LED light board; 5. Lens; 6. Sealing ring;

[0034] 7. front shell; 701. groove;

[0035] 8. Adhesive backing; 9. Glass plate. DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0037] Please refer to Figures 1-5 , the present invention provides a technical solution: a high-power searchlight for a plant protection unmanned aerial vehicle, including an unmanned aerial vehicle tripod 1 and a searchlight mechanism 2 installed on the unmanned aerial vehicle tripod 1 through a support structure.

[0038] The searchlight mechanism 2 is installed on the unmanned aerial vehicle tripod 1 through a support structure. When the plant protection unmanned aerial vehicle is flying and operating at night, the searchlight mechanism 2 provides the lighting requirements for the unmanned aerial vehicle in multi-scene operations at night.

[0039] The searchlight mechanism 2 is composed of a housing sleeve and an LED lamp board 4 installed in the housing sleeve. A sealing structure for protecting the LED lamp board 4 is provided in the housing sleeve.

[0040] The sealing structure can prevent water from entering the housing sleeve and ensure the service life of the LED lamp board 4.

[0041] A heat dissipation structure acting on the LED lamp board 4 is formed on the housing sleeve.

[0042] When the unmanned aerial vehicle is flying and operating, the heat dissipation structure cooperates with the wind field provided during the flight of the unmanned aerial vehicle to achieve the cooling effect on the high-power operating LED lamp board 4 and ensure the safety and reliability of the LED lamp board 4 during long-term high-power lighting.

[0043] Specifically, as Figure 1 shown, the support structure includes a fixed bracket 101 sleeved on the outside of the unmanned aerial vehicle tripod 1 and a tension adjustment assembly provided on the fixed bracket 101. A universal joint 201 for cooperating with the fixed bracket 101 for movable docking is fixedly provided on the housing sleeve.

[0044] The tension adjustment assembly can adjust the tightness between the fixed bracket 101 and the unmanned aerial vehicle tripod 1, and at the same time can adjust the tightness relationship between the fixed bracket 101 and the universal joint 201. After the user loosens the tension adjustment assembly, the user can adjust the positional relationship of the fixed bracket 101 relative to the unmanned aerial vehicle tripod 1 according to the use requirements and adjust the deflection angle of the searchlight mechanism 2 relative to the fixed bracket 101. After the adjustment is completed, the user only needs to tighten the tension adjustment assembly to synchronously fix the searchlight mechanism 2 and the fixed bracket 101, so as to achieve the purpose of facilitating the operation of the user.

[0045] The side of the fixed bracket 101 is an open structure, and the universal joint 201 is movably embedded in the opening, and the opening degree is controlled by the tightening and loosening adjustment component.

[0046] The universal joint 201 is located on the side wall of the opening. By providing two hemispherical grooves distributed oppositely, it is beneficial for the movable clamping of the universal joint 201. After the opening is tightened under the action of the tightening and loosening adjustment component, the inner wall of the fixed bracket 101 presses against the outer wall of the drone leg 1, and at the same time, the inner wall of the hemispherical groove presses against the outer wall of the universal joint 201.

[0047] When the opening is loosened under the action of the tightening and loosening adjustment component, the fixed bracket 101 can move along the drone leg 1, and the universal joint 201 can move along the hemispherical groove.

[0048] The tightening and loosening adjustment component is a bolt 102 screwed onto the side of the fixed bracket 101. The user tightens the bolt 102 to make the opening of the fixed bracket 101 tighten, and loosens the bolt 102 to make the opening of the fixed bracket 101 loosen.

[0049] The bolt 102 can be directly screwed into one side opening of the fixed bracket 101. After tightening the bolt 102, the head of the bolt 102 presses against the end of the other side opening of the fixed bracket 101 to achieve the tightening of the opening of the fixed bracket 101.

[0050] The bolt 102 can also cooperate with a nut. After the nut and the bolt 102 are tightened, the nut presses against one side opening of the fixed bracket 101, and the head of the bolt 102 presses against the other side opening of the fixed bracket 101 to achieve the tightening of the opening of the fixed bracket 101.

[0051] Specifically, as Figure 4 shown, the LED lamp board 4 is a dual constant current source PCB. A lens 5 for covering the lamp beads is fixedly arranged on the LED lamp board 4, and the lenses 5 are distributed in a rectangular array on the LED lamp board 4 along with the lamp beads.

[0052] Before the drone takes off, the LED lamp board 4 provides 20-watt low-power lighting. After the drone takes off, the LED lamp board 4 provides 80-watt high-power lighting.

[0053] The dual constant current source control circuit is a circuit design technology that uses two operational amplifiers (op amps) to achieve a stable output current. A stable reference current is connected to the load resistor to achieve a source with a stable output current.

[0054] The control logic of the dual constant current source PCB is divided into before takeoff and after takeoff. Using the dual constant current source control ensures that a single lamp failure will not cause the entire lamp to fail, increasing the reliability of the LED lamp board 4.

[0055] Before takeoff, when the LED lamp board 4 is lit, it has a normal brightness of 20 watts, which can avoid overheating when there is no air cooling and play a role in protecting the circuit board.

[0056] After takeoff, when the LED lamp board 4 is lit, it provides high-brightness illumination of 80 watts, meeting the usage requirements of the drone at night.

[0057] Specifically, as Figures 2-5 shown, the shell cover is composed of a rear shell 3, a front shell 7 assembled with the rear shell 3, and a glass plate 9 installed on the front shell 7. The sealing structure includes a docking ring 301 fixedly arranged on the rear shell 3, a groove 701 formed in the front shell 7 for fitting the docking ring 301 to be embedded, and a sealing ring 6 embedded in the groove 701 and abutting against the end of the docking ring 301. The glass plate 9 uses coated tempered glass.

[0058] When the LED lamp board 4 is installed in the rear shell 3, the LED lamp board 4 fits with the inner edge of the rear shell 3. By pouring a small amount of sealant in the outer circle, the sealing effect between the LED lamp board 4 and the rear shell 3 can be achieved, which is beneficial to the protection of the thermal conductive silicone grease.

[0059] When the rear shell 3 is docked and assembled with the front shell 7, by inserting the docking ring 301 on the rear shell 3 into the groove 701 of the front shell 7, the end of the docking ring 301 facing away from the rear shell 3 is in abutting contact with the sealing ring 6. When the rear shell 3 is assembled and used with the front shell 7, both the inner and outer sides of the docking ring 301 are in contact with the inner wall of the groove 701, and the end of the docking ring 301 is in abutting contact with the sealing ring 6, so as to effectively prevent water in the external environment from entering the shell cover through the connection between the front shell 7 and the rear shell 3, playing a role in protecting the LED lamp board 4 in the shell cover.

[0060] The rear shell 3 is fixed to the LED lamp board 4 through sealant. A glue injection port 304 is formed in the rear shell 3 for fitting the sealant to be injected. A hole groove is formed in the front shell 7 for fitting the lens 5 to pass through. The front shell 7 is adhesively fixed to the glass plate 9 through a double-sided adhesive tape 8.

[0061] The front shell 7 and the glass plate 9 are fixed by a large-area double-sided adhesive tape 8 that is weather-resistant, heat-resistant, and corrosion-resistant. While being firmly fixed, it avoids the cumbersome dispensing process and is convenient for production.

[0062] Specifically, as Figures 3-5 shown, the heat dissipation structure includes a contact patch 302 fixedly arranged in the rear shell 3 and fitting with the LED lamp board 4. A cavity 303 is formed in the rear shell 3. Thermal conductive silicone grease for heat conduction is coated on the end faces of the LED lamp board 4 corresponding to the contact patch 302 and the cavity 303.

[0063] When the LED lamp board 4 is installed in the rear case 3, the LED lamp board 4 fits against the inner edge of the rear case 3, so that the cavity 303 forms a sealed space, which is conducive to keeping the thermal conductive grease in a stable composite state relative to the LED lamp board 4, achieving less consumption of the thermal conductive grease, good heat conduction effect, and at the same time achieving the purpose of simple production process.

[0064] The distribution of the abutting patches 302 corresponds to the distribution of the lamp beads on the LED lamp board 4. By abutting the back of the light-emitting area of the LED lamp board 4 with the abutting patches 302, it is conducive to efficiently conducting heat from the area where heat is concentrated on the LED lamp board 4.

[0065] The heat dissipation structure includes heat dissipation fins formed on the rear case 3. The heat dissipation path of the searchlight mechanism 2 is as follows: the LED lamp board 4 transfers heat to the rear case 3 through the thermal conductive grease, and the flowing air outside acts on the heat dissipation fins to take away the heat of the rear case 3.

[0066] When the plant protection UAV is flying, its rotating blades accelerate the flow of the nearby air, so that the searchlight mechanism 2 is in the wind field, meeting the air-cooled heat dissipation of the heat-generating searchlight mechanism 2. By arranging the channels formed between adjacent heat dissipation fins along the flight direction of the plant protection UAV, when the plant protection UAV is moving forward, the air flow will act on the heat dissipation fins along the channels, which is conducive to improving the heat dissipation efficiency of the searchlight mechanism 2.

[0067] The above description of the embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high-power searchlight for a plant protection drone, characterized in that: It comprises an unmanned aerial vehicle tripod (1) and a searchlight mechanism (2) mounted on the unmanned aerial vehicle tripod (1) via a supporting structure; The searchlight mechanism (2) is composed of a shell and an LED light board (4) installed in the shell, and a sealing structure for protecting the LED light board (4) is provided in the shell; The shell is provided with a heat dissipation structure for the LED light panel (4).

2. A high-power searchlight for a plant protection UAV according to claim 1, characterized in that: The support structure comprises a fixed bracket (101) sleeved on the outside of the drone tripod (1) and a tension adjustment component arranged on the fixed bracket (101); a universal head (201) movably docked with the fixed bracket (101) is fixedly provided on the shell.

3. A high-power searchlight for a plant protection UAV according to claim 2, characterized in that: The side of the fixed bracket (101) is an open structure, the universal head (201) is movably embedded in the opening, and the tension adjustment component controls the size of the opening.

4. The high-power searchlight for a plant protection UAV according to claim 2, characterized in that: The tension adjustment assembly is a bolt (102) screwed into the side of the fixing bracket (101).

5. The high-power searchlight for a plant protection UAV according to claim 1, characterized in that: The LED light board (4) is a dual constant current source PCB, and a lens (5) that matches the lamp beads is fixedly provided on the LED light board (4), and the lenses (5) are distributed on the LED light board (4) in a rectangular array along with the lamp beads; Before the drone takes off, the LED light panel (4) provides 20 watts of low-power lighting, and after the drone takes off, the LED light panel (4) provides 80 watts of high-power lighting.

6. The high-power searchlight for a plant protection UAV according to claim 1, characterized in that: The shell case is composed of a rear shell (3), a front shell (7) assembled with the rear shell (3), and a glass plate (9) mounted on the front shell (7).

7. The high-power searchlight for a plant protection UAV according to claim 6, characterized in that: The sealing structure comprises a docking ring (301) fixedly mounted on the rear shell (3); a groove (701) is formed in the front shell (7) for the docking ring (301) to be embedded; a sealing ring (6) is embedded in the groove (701) for the end of the docking ring (301) to abut against.

8. The high-power searchlight for a plant protection UAV according to claim 6, characterized in that: The rear shell (3) is fixed to the LED light board (4) by means of a sealant, a sealant injection port (304) is formed in the rear shell (3) for injecting the sealant, a hole groove is formed in the front shell (7) for the lens (5) to penetrate, and the front shell (7) is bonded and fixed to the glass plate (9) by means of a double-sided adhesive (8).

9. The high-power searchlight for a plant protection UAV according to claim 1, characterized in that: The heat dissipation structure comprises a butt-mounted sheet (302) fixed in the rear shell (3) and in contact with the LED light board (4); a cavity (303) is formed in the rear shell (3); and end surfaces of the LED light board (4) corresponding to the butt-mounted sheet (302) and the cavity (303) are coated with thermally conductive silicone grease for heat conduction.

10. A high-power searchlight for a plant protection UAV according to any one of claims 1 or 9, characterized in that: The heat dissipation structure comprises heat dissipation fins formed on the rear shell (3).

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