A drone lighting system and accessories therefor

Abstract

The application relates to the technical field of unmanned aerial vehicle (UAV) lighting power supply, and particularly provides a UAV lighting system and accessories thereof, which comprise a power transmission cable, a plurality of connection ports are arranged on the power transmission cable at intervals, a winding roller is further arranged, the power transmission cable can be wound on the winding roller through rotation of the winding roller, a plurality of connecting heads are arranged on two ends of the winding roller, the connecting heads can be electrically connected with the connection ports of the power transmission cable, a power supply box is arranged to be electrically connected with the connecting heads, a plurality of connection ports are arranged on the power transmission cable, and the connecting heads are arranged at the ends of the winding roller, so that current can be directly transmitted to the lighting lamp through the connecting heads and the suspended power transmission cable after the UAV hovers stably, current can be prevented from passing through the multilayer wound cable, heat generated due to resistance accumulation can be reduced, power loss caused by heat generation can be reduced, power transmission efficiency is obviously improved, and the stability and reliability of the power transmission system are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of unmanned aerial vehicle lighting power supply, in particular to an unmanned aerial vehicle lighting system and an accessory thereof. BACKGROUND

[0002] In the face of rapid development of electronic technology, the unmanned aerial vehicle industry has experienced explosive growth, and various forms and functions of unmanned aerial vehicles have emerged in an endless stream. Their application range is also continuously expanding, and they have been deeply integrated into reconnaissance, surveying, aerial photography, military and other fields, becoming a frontier direction in the development of modern technology that attracts much attention.

[0003] When performing tasks, unmanned aerial vehicles often need to hover in the air and rely on the lighting components carried to provide lighting. Long-time hovering lighting will quickly consume the power of the unmanned aerial vehicle, and it is difficult to maintain only with the battery on the machine. Therefore, a power supply box is usually configured on the ground to continuously supply power to the lighting components of the unmanned aerial vehicle through a power cable.

[0004] Due to the complex and changeable working environment of unmanned aerial vehicles, the hovering height and position are not the same, and sometimes a longer power cable needs to be used. To ensure smooth operation in various scenarios, the operator often prepares a longer cable and uses a winding device to store the excess part.

[0005] However, the longer the power cable, the greater the loss of electrical energy during transmission. This problem is more difficult when electrical energy resources are extremely valuable in rescue operations. Not only that, but the large amount of cable tightly wound in the winding device has difficulty dissipating heat, causing the cable temperature to continue to rise. This not only further exacerbates the loss of electrical energy, but in severe cases can even burn the insulation layer of the cable, causing equipment damage and affecting the smooth progress of the task. SUMMARY

[0006] Therefore, it is necessary to provide an unmanned aerial vehicle lighting system and an accessory thereof to solve the problem that the current long power cable causes heat to be difficult to dissipate, causing the cable temperature to continue to rise and exacerbating the loss of electrical energy.

[0007] The above-mentioned purpose is achieved by the following technical solutions:

[0008] An unmanned aerial vehicle lighting accessory, comprising:

[0009] a lighting lamp, the lighting lamp being used for lighting;

[0010] a power cable, one end of the power cable being electrically connected to the lighting lamp, and a plurality of wiring ports being arranged at intervals on the power cable;

[0011] A chassis, a winding roller is rotatably arranged on the chassis, a plurality of layers of the power transmission cable are wound on the winding roller, a plurality of connecting heads are radially distributed on the surfaces of the two ends of the winding roller close to each other, each connecting head is located between two adjacent layers of the power transmission cable, and the connecting head is in electrical contact with a wiring port on the power transmission cable.

[0012] A power supply box is electrically connected with the plurality of connecting heads, and the power supply box is electrically connected with the power transmission cable separated from the winding roller to supply power to the lighting lamp through the connecting heads.

[0013] Further, a plurality of rotating rings are rotatably arranged between the plurality of connecting heads and the surfaces of the two ends of the winding roller close to each other, the plurality of rotating rings are coaxially arranged, the diameters of the plurality of rotating rings are alternately increased, the connecting heads are fixedly arranged on each rotating ring in an axial direction, each connecting head has a U-shaped groove, a U-shaped conductive spring is arranged in the U-shaped groove, and the U-shaped conductive spring is electrically connected with the power supply box.

[0014] Further, the wiring port of the power transmission cable has a ring groove, the wire core of the power transmission cable is exposed at the bottom of the ring groove, the diameter of the U-shaped groove is smaller than the diameter of the power transmission cable and larger than the diameter of the wire core of the power transmission cable, and the diameter of the U-shaped conductive spring is smaller than the diameter of the wire core of the power transmission cable.

[0015] Further, a connecting sleeve is coaxially and fixedly arranged on the outer periphery of one end of the ring groove of the power transmission cable, the side wall of the connecting sleeve is hollow, and a blocking sleeve is axially slidably arranged in the side wall of the connecting sleeve.

[0016] A sealing sleeve is coaxially and fixedly arranged on the other end of the ring groove of the power transmission cable, and the outer periphery of the sealing sleeve can be in contact with the blocking sleeve to seal the ring groove.

[0017] Further, an elastic member is arranged in the side wall of the connecting sleeve, one end of the elastic member is connected with the blocking sleeve, and the other end of the elastic member is connected with the side wall of the connecting sleeve.

[0018] Further, a sealing rubber ring is coaxially and fixedly arranged on the outer periphery of the sealing sleeve.

[0019] Further, a winding assembly is arranged on the chassis, and the winding assembly is used to uniformly and layer by layer wind the power transmission cable on the winding roller.

[0020] Further, the winding assembly comprises a fixing frame, two lead screws are fixedly arranged on the fixing frame and are parallel to each other, the axes of the two lead screws are parallel to the axis of the winding roller, a sliding block is axially slidably arranged on the two lead screws, two guide wheels are rotatably arranged on the sliding block, the two guide wheels are located on the same plane, and the power transmission cable passes through the outer circumferences of the two guide wheels and is in rolling contact with the outer circumferences of the two guide wheels.

[0021] Further, the bottom frame is further provided with a driving motor, a transmission gear is coaxially and fixedly arranged on the end of the winding roller, and the driving motor is in meshing connection with the transmission gear.

[0022] The application further provides a UAV lighting system comprising the UAV lighting accessory and a UAV body.

[0023] The application has the following beneficial effects:

[0024] The application sets a plurality of wire connection ports on the power transmission cable and a connector on the end of the winding roller, so that the current is directly transmitted to the lighting lamp through the connector and the suspended power transmission cable after the UAV hovers stably, the current is prevented from passing through the multiple layers of wound cables, the heat generated due to the accumulation of resistance is reduced, the power loss caused by heating is reduced, the power transmission efficiency is significantly improved, and the stability and reliability of the power transmission system are ensured.

[0025] The plurality of rotating rings are coaxial and have alternating diameters, the rotating rings can rotate and move axially, the rotating rings can rotate and move under the pushing of the power transmission cable when the wire connection ports and the connector positions do not correspond, the wire connection ports are ensured to enter the U-shaped grooves of the connector, and the line connection is ensured.

[0026] The application sets a connecting sleeve and a blocking sleeve at one end of the ring groove of the wire connection port, sets a sealing sleeve at the other end, the elastic member makes the blocking sleeve initially extend out of the sealing ring groove, the blocking sleeve is retracted when the wire enters the U-shaped groove, and the wire core at the bottom of the ring groove is prevented from being corroded.

[0027] The application sets a sealing rubber ring on the outer circumference of the sealing sleeve, the blocking sleeve is in contact with the sealing rubber ring when the blocking sleeve extends out, the sealing property of the connection between the blocking sleeve and the sealing sleeve is improved, and the wire core is further protected.

[0028] The application sets the winding assembly, the winding assembly comprises a fixing frame, lead screws, a sliding block and guide wheels, a micro motor on the sliding block drives the sliding block to move axially along the lead screws, the power transmission cable is synchronized, the power transmission cable is uniformly and layer by layer wound on the winding roller, a driving motor on the bottom frame drives the winding roller to rotate, and the uniform winding of the power transmission cable is completed. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The application provides a structure schematic view of the UAV lighting accessory.

[0030] Figure 2 A schematic diagram of a UAV body structure of a UAV lighting accessory according to an embodiment of the present application;

[0031] Figure 3 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application;

[0032] Figure 4 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application; Figure 3 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application;

[0033] Figure 5 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application; Figure 4 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application;

[0034] Figure 6 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application;

[0035] Figure 7 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application;

[0036] Figure 8 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application;

[0037] Figure 9 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application;

[0038] Figure 10 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application; Figure 9

[0039] A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application; Figure 11

[0040] A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application; Figure 12 Figure 11 A schematic diagram of a winding roller and a chassis of a UAV lighting accessory according to an embodiment of the present application.

[0041] Wherein:

[0042] 100, UAV body; 110, lighting lamp; 120, power supply box; 130, chassis;

[0043] ​200, transmission cable; 210, connection port; 220, ring groove; 230, wire core; 240, connecting sleeve; 250, blocking sleeve; 260, elastic member; 270, sealing sleeve; 280, sealing rubber ring;

[0044] 300, winding roller; 310, baffle; 320, annular groove; 330, rotating ring; 340, sliding rod; 350, connector; 360, U-shaped groove; 370, U-shaped conductive spring; 380, connecting wire;

[0045] 400, fixed frame; 410, lead screw; 420, sliding block; 430, guide wheel; 440, drive motor; 450, transmission gear. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0047] The serial numbers assigned to components herein, such as "first," "second," etc., are used solely to distinguish the objects being described and do not convey any sequential or technical meaning. References to "connection" and "coupling" herein, unless otherwise specified, include both direct and indirect connections (couplings). In the description of the present invention, it should be understood that terms such as "upper," "lower," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise" indicate positions or relationships based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the device or component being referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0048] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0049] Refer to the following Figures 1-12 To describe a drone lighting accessory provided by the present invention.

[0050] The unmanned aerial vehicle lighting accessory includes a lighting lamp 110, which is used to increase brightness, and the unmanned aerial vehicle often needs to hover in the air and relies on the lighting lamp 110 to provide lighting. Long-time hovering lighting will quickly consume the power of the unmanned aerial vehicle, and it is difficult to maintain only with the battery on the machine. Therefore, the lighting lamp 110 on the unmanned aerial vehicle is connected with a power transmission cable 200, and the other end of the power transmission cable 200 can be connected with a power supply box 120. The power supply box 120 is used to provide power for the lighting lamp 110, so that the unmanned aerial vehicle can work for a long time. Because the working environment of the unmanned aerial vehicle is complex and changeable, the hovering height and position are not the same, and therefore a longer power transmission cable 200 needs to be used. In order to ensure smooth operation in various scenes, the operator often prepares a longer power transmission cable 200 in advance. The unmanned aerial vehicle lighting accessory further includes a chassis 130, and a winding roller 300 is rotatably arranged on the chassis 130. The longer power transmission cable 200 is wound layer by layer on the outer periphery of the winding roller 300. When the height of the unmanned aerial vehicle changes, the winding roller 300 can wind or unwind the power transmission cable 200 to adapt to the height of the unmanned aerial vehicle.

[0051] In order to avoid that too much power transmission cable 200 is wound on the winding roller 300 and causes excessive heat, the present application uniformly and intervaliy provides a plurality of wiring ports 210 on the power transmission cable 200, and two baffles 310 are provided on the two ends of the winding roller 300. A plurality of connecting heads 350 are distributed in the radial direction on the surfaces of the two baffles 310 close to each other. The plurality of connecting heads 350 are located between the adjacent two layers of power transmission cables 200. The plurality of connecting heads 350 are electrically connected with the power supply box 120, and the plurality of connecting heads 350 can be electrically connected with the wiring ports 210 on the power transmission cable 200. When the connecting head 350 is electrically connected with the power transmission cable 200, the current of the power supply box 120 is transmitted to the lighting lamp 110 through the connecting head 350 and the power transmission cable 200, so that the lighting lamp 110 obtains power.

[0052] It should be noted that the interval length of the wiring port 210 on the power transmission cable 200 of the present application is the same. When the power transmission cable 200 is wound layer by layer on the winding roller 300 and close to the baffle 310, the wiring port 210 on the power transmission cable 200 will gradually approach the connecting head 350, such as Figure 4 and Figure 5As shown, the end of each layer of power transmission cable 200 is close to the connector 350, and when the power transmission cable 200 of a layer is separated from the end of the winding roller 300, the connecting port 210 on the power transmission cable 200 of the layer is separated from the connector 350. After the unmanned aerial vehicle hovers to a suitable height, the power transmission cable 200 of multiple layers is separated from the winding roller 300, at this time, the length of the power transmission cable 200 between the unmanned aerial vehicle and the winding roller 300 is stable, the power transmission cable 200 stops separating from the winding roller 300, and the end of the power transmission cable 200 in the air, that is, the end close to the winding roller 300, is electrically connected to the connector 350 on the winding roller 300. Since all the connectors 350 on the winding roller 300 are electrically connected to the power supply box 120, the electrical connection between the connecting port 210 on the power transmission cable 200 of the layer and the connector 350 can transmit the power of the power supply box 120 to the illuminating lamp 110 through the power transmission cable 200. At this time, the current of the power supply box 120 no longer passes through the power transmission cable 200 wound on the winding roller 300, but directly passes through the connector 350 electrically connected to the end of the power transmission cable 200 in the air and the power transmission cable 200 in the air.

[0053] The above design effectively avoids the problem of generating a large amount of heat due to the accumulation of resistance when the current passes through the power transmission cable 200 wound in multiple layers, and shortens the current transmission path, which not only reduces the power loss caused by heating, but also significantly improves the power transmission efficiency, ensuring the stability and reliability of the power transmission system.

[0054] It should be further pointed out that the reason why the current does not pass through the power transmission cable 200 on the winding roller 300 but directly passes through the power transmission cable 200 in the air is as follows:

[0055] The current in the circuit will flow along the path with the smallest resistance. When the power transmission cable 200 is separated from the winding roller 300, the loop resistance formed by the power transmission cable 200 wound in multiple layers on the winding roller 300 is relatively large, while the path resistance formed by the connector 350 and the power transmission cable 200 in the air is relatively small. According to Ohm's law I=U / R (where I is the current, U is the voltage, and R is the resistance), in the case of constant voltage, the smaller the resistance, the easier the current flows, so the current will preferentially pass through the path with smaller resistance formed by the connector 350 and the power transmission cable 200 in the air, rather than passing through the power transmission cable 200 wound in multiple layers on the winding roller 300.

[0056] Specifically, as shown in Figure 3 and Figure 6As shown, the plurality of connecting heads 350 and the mutually close surfaces of the two baffles 310 of the winding roller 300 are provided with a plurality of rotating rings 330, which are coaxially and rotatably arranged on the baffles 310, and the diameters of the rotating rings 330 on the two baffles 310 are alternately increased, such as Figure 4 and Figure 5 As shown, the embodiment takes four rotating rings 330 as an example, and the diameters of the four rotating rings 330 from small to large are in the order of the innermost rotating ring 330 on the right side, the innermost rotating ring 330 on the left side, the outermost rotating ring 330 on the right side, and the outermost rotating ring 330 on the left side. Each rotating ring 330 is fixedly provided with axially distributed connecting heads 350, so that the connecting heads 350 on each rotating ring 330 are located between the adjacent two layers of power cables 200, facilitating the connection of the connecting heads 350 and the wiring ports 210 of the power cables 200.

[0057] It should be noted that each rotating ring 330 can rotate around the axis of the baffle 310 and move along the axis of the baffle 310, and each connecting head 350 is provided with a U-shaped groove 360, such as Figure 7 and Figure 8 As shown, the U-shaped groove 360 is provided with a U-shaped conductive spring 370, which can be electrically connected with the power cable 200.

[0058] In the process of winding the power cable 200 layer by layer on the winding roller 300, the power cable 200 can gradually wind from one end of the winding roller 300 to the other end of the winding roller 300. At this time, the wiring port 210 of the power cable 200 located at the other end of the winding roller 300 can be moved into the U-shaped groove 360 of the connecting head 350. When the wiring port 210 is located in the U-shaped groove 360 of the connecting head 350, the power cable 200 starts to change direction and winds the second layer. After the power cable 200 moves to the end of the winding roller 300 again, it will contact another connecting head 350, that is, the wiring port 210 on each layer of the power cable 200 can be electrically connected with the corresponding connecting head 350, and the subsequent is the same, until the power cable 200 is wound on the winding roller 300, and each wiring port 210 on the power cable 200 is connected with each connecting head 350.

[0059] It should be noted that the plurality of rotating rings 330 are arranged to adapt to special situations, for example, when the power cable 200 is wound to the end of the winding roller 300, the connection port 210 on the power cable 200 may not correspond to the position of the connecting head 350, that is, when the power cable 200 contacts the connecting head 350, the connection port 210 on the power cable 200 is a certain distance away from the connecting head 350. Since the connecting head 350 is not connected to the power cable 200 but is in sliding contact, the power cable 200 continues to be wound to push the connecting head 350, and the connecting head 350 drives the rotating ring 330 to rotate. At this time, the connecting head 350 will gradually approach the connection port 210 on the power cable 200 under the action of rotation. Since the continuous winding of the power cable 200 gradually increases the width of the power cable 200 wound on the winding roller 300, the rotating ring 330 that can move axially will be pushed to move in the direction away from the winding roller 300 in the axial direction, so as to adapt to special situations, thereby ensuring that the connection port 210 of the power cable 200 can enter the U-shaped groove 360 of the connecting head 350.

[0060] For the connection of the rotating ring 330 and the baffle 310, as shown in Figure 4 、 Figure 5 、 Figure 6 and Figure 7 , a plurality of annular grooves 320 are formed on the end face of the two baffles 310 close to each other. Three sliding rods 340 are arranged on the end face of each rotating ring 330 close to the baffle 310. The three sliding rods 340 are slidingly arranged in the annular groove 320. A limiting plate is arranged on the end face of the annular groove 320. The limiting plate limits the sliding rod 340 from leaving the annular groove 320. A magnet (not shown in the figure) is arranged in each annular groove 320. A magnet (not shown in the figure) is also arranged on the sliding rod 340 of each rotating ring 330 in the annular groove 320. The two positive poles or negative poles of the two magnets are close to each other. According to the principle that the same poles of magnets repel each other, the two magnets push the protrusions at the ends of the three sliding rods 340 against the limiting plate. When the rotating ring 330 is subjected to an axial thrust, it will shrink into the annular groove 320.

[0061] It should be noted that the present application is not limited to using two magnets to push the rotating ring 330, but can also use other elastic elements such as compression springs to push the rotating ring 330, which is not limited here.

[0062] More specifically, as shown in the drawings, the connecting port 210 on the power transmission cable 200 has a ring groove 220, the bottom of the ring groove 220 is exposed to the core 230, and the diameter of the U-shaped groove 360 in the embodiment is smaller than the diameter of the power transmission cable 200 and larger than the diameter of the core 230 of the power transmission cable 200, so when the connecting port of the power transmission cable 200 is close to the U-shaped groove 360 of the connecting head 350, as shown in Figure 11 and Figure 12 the core 230 of the power transmission cable 200 is clamped into the U-shaped groove 360, the diameter of the U-shaped conductive spring 370 in the U-shaped groove is slightly smaller than the diameter of the core 230, so the U-shaped conductive spring 370 in the U-shaped groove 360 clamps the core 230 of the power transmission cable 200, and the other end of the U-shaped conductive spring 370 is provided with a connecting wire 380 between the power supply box 120, and the current of the power supply box 120 is transmitted to the power transmission cable 200 through the connecting wire 380 and the U-shaped conductive spring 370.

[0063] In further embodiments, as shown in Figure 9 and Figure 10 the connecting port 210 is arranged at intervals on the power transmission cable 200, and the bottom of the ring groove 220 of the connecting port 210 is exposed to the core 230, in order to avoid corrosion of the core 230, a connecting sleeve 240 is coaxially and fixedly sleeved on the outer periphery of one end of the ring groove 220 of the connecting port 210, the side wall of the connecting sleeve 240 is hollow, a blocking sleeve 250 is axially slidably arranged in the side wall of the connecting sleeve 240, the blocking sleeve 250 can be extended out of the side wall of the connecting sleeve 240, a sealing sleeve 270 is coaxially and fixedly arranged on the other end of the ring groove 220 of the connecting port 210, when the blocking sleeve 250 is extended out of the side wall of the connecting sleeve 240, the ring groove 220 can be blocked, and one end of the blocking sleeve 250 can be in contact with the outer periphery of the sealing sleeve 270 to block the ring groove 220, thereby preventing the core 230 at the bottom of the ring groove 220 from being corroded.

[0064] Specifically, in order to realize the function of the blocking sleeve 250 extending from the side wall of the connecting sleeve 240, an elastic member 260 is provided inside the side wall of the connecting sleeve 240. The elastic member 260 is a compression spring. One end of the elastic member 260 is fixedly connected to the inside of the side wall of the connecting sleeve 240, and the other end of the elastic member 260 is fixedly connected to the end of the blocking sleeve 250 close to the connecting sleeve 240. In the initial state, the elastic member 260 pushes the blocking sleeve 250 to extend out of the side wall of the connecting sleeve 240. The blocking sleeve 250 can seal the annular groove 220. When the wire gradually enters the U-shaped groove 360 ​​of the connector 350, the U-shaped groove 360 ​​will push the blocking sleeve 250 to retract inside the connecting sleeve 240, thereby exposing the wire core 230 in the annular groove 220. Since the diameter of the wire core 230 is smaller than the diameter of the U-shaped groove 360, the wire core 230 can enter the U-shaped groove 360 ​​and contact the U-shaped conductive spring clip 370 to realize current transmission.

[0065] In a further embodiment, in order to improve the sealing performance of the connection between the blocking sleeve 250 and the sealing sleeve 270, a sealing rubber ring 280 is coaxially and fixedly provided on the outer periphery of the sealing sleeve 270. When the blocking sleeve 250 extends out of the side wall of the connecting sleeve 240, it is in sealing contact with the outer periphery of the sealing rubber ring 280, thereby improving the sealing performance of the blocking sleeve 250 and the sealing sleeve 270.

[0066] Specifically, in this embodiment, a winding assembly is further provided, and the winding assembly is used to evenly and layer-wound the transmission cable 200 on the winding roller 300, such as Figure 3 As shown, the winding assembly includes a fixed frame 400, on which two parallel screws 410 are fixed, the axes of the two screws 410 are parallel to the axis of the winding roller 300, and sliding blocks 420 are axially slidably provided on the two screws 410, and two guide wheels 430 are rotatably provided on the sliding blocks 420, the two guide wheels 430 are in the same plane, and the transmission cable 200 passes through the outer periphery of the two guide wheels 430 and is in rolling contact with the outer periphery of the two guide wheels 430.

[0067] It should be noted that when the drone pulls the transmission cable 200 off the winding roller 300, the two guide wheels 430 have a guiding function, and a micro motor (not shown in the figure) is fixedly provided on the sliding block 420 in this embodiment. The rotating shaft of the micro motor is spirally engaged with the lead screw 410. When the micro motor is started, the sliding block 420 can be driven by the lead screw 410 to move along the axial direction of the lead screw 410, so that the sliding block 420 can move in the same direction as the transmission cable 200 on the winding roller 300.

[0068] It can be understood that in the process of the power cable 200 being separated from the winding roller 300, the power cable 200 gradually moves from one end of the winding roller 300 to the other end and is separated layer by layer, and the sliding block 420 drives the guide wheel 430 to move synchronously with the power cable 200, and when the power cable 200 moves to the end of the winding roller 300, the moving direction is changed, at this time the micro motor is reversely rotated to drive the sliding block 420 to move reversely on the lead screw 410 so as to make the sliding block 420 move synchronously with the power cable 200; similarly, when the winding roller 300 rotates to wind the power cable 200, the micro motor drives the sliding block 420 to move axially on the lead screw 410 to move the power cable 200 from one end of the winding roller 300 to the other end, so that the power cable 200 is uniformly wound on the winding roller 300, and after winding a layer, the sliding block 420 moves reversely to drive the power cable 200 to move reversely to start winding a new layer, and the like, the sliding block 420 reciprocates on the lead screw 410 to make the power cable 200 be uniformly and layer by layer wound on the winding roller 300.

[0069] More specifically, the chassis 130 in the embodiment is fixedly provided with a driving motor 440, and a transmission gear 450 is coaxially and fixedly arranged on one end of the winding roller 300, the rotating shaft of the driving motor 440 is engaged with the transmission gear 450, and the driving motor 440 can drive the transmission gear 450 to rotate when the driving motor 440 rotates, and the transmission gear 450 drives the winding roller 300 to rotate to complete the uniform winding of the power cable 200.

[0070] The specific working process of the unmanned aerial vehicle lighting accessory provided by the application is described in combination with the above embodiment.

[0071] Before the unmanned aerial vehicle is started, the winding assembly uniformly winds the power cable 200 layer by layer on the winding roller 300, the wiring port 210 on each layer of the power cable 200 on the winding roller 300 is connected with the connecting head 350 on the baffle 310 of the winding roller 300, the U-shaped conductive spring 370 in the U-shaped groove 360 of the wiring head is in contact with the wire core 230 at the bottom of the ring groove 220, and the U-shaped conductive spring 370 is connected with the power supply box 120 through the connecting wire 380.

[0072] The unmanned aerial vehicle is started, and the power cable 200 is unwound from the winding roller 300, in the unwinding process, the power cable 200 is separated from the winding roller 300 layer by layer, when each layer of the power cable 200 is separated, the wiring port 210 on the corresponding layer of the power cable 200 is separated from the U-shaped groove 360 on the connecting head 350, that is, the bare wire core 230 in the ring groove 220 of the wiring port 210 is separated from the U-shaped conductive spring 370 in the U-shaped groove 360, at this time, the blocking sleeve 250 on the outer periphery of the ring groove 220 is no longer blocked by the U-shaped groove, the blocking sleeve 250 is pushed out from the inner wall of the connecting sleeve 240 under the reset action of the elastic element 260 in the connecting sleeve 240, and the blocking sleeve 250 is elongated to the outer periphery of the sealing sleeve 270 at the other end of the ring groove 220, the outer periphery of the sealing sleeve 270 is provided with a sealing rubber ring 280, the sealing sleeve 270 is in contact with the sealing rubber ring 280, so that the sealing of the sealing sleeve 270 and the blocking sleeve 250 is improved, and it should be noted that the bare wire core 230 on all the wiring ports 210 separated from the connecting head 350 is sealed by the blocking sleeve 250 to prevent external erosion.

[0073] After the unmanned aerial vehicle hovers, the length of the power cable 200 stabilizes, at this time, the power cable 200 suspended near the wiring port 210 on one end of the winding roller 300 is connected with the connecting head 350 on the baffle 310 of the winding roller 300, the bare wire core 230 on the wiring port 210 is in contact with the U-shaped conductive spring 370 in the connecting head 350, the current of the power supply box 120 passes through the U-shaped conductive spring 370 and the suspended power cable 200, and no longer passes through the power cable 200 wound layer by layer on the winding roller 300, so that the problem of generating a large amount of heat due to resistance accumulation is avoided, and the current transmission path is shortened.

[0074] The application also provides an unmanned aerial vehicle lighting system, which comprises an unmanned aerial vehicle body 100 and an unmanned aerial vehicle lighting accessory, and the lighting lamp 110 of the lighting accessory is connected to the lower end of the unmanned aerial vehicle body 100, and the lighting lamp 110 is used for providing lighting for the unmanned aerial vehicle body 100.

[0075] The technical features of the above embodiments can be combined in any way, in order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0076] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, several modifications and improvements can be made, which are within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A lighting accessory for a drone, characterized in that: include: Lighting lamps, used for lighting; A power transmission cable, one end of which is electrically connected to a lighting lamp, and a plurality of wiring ports are evenly spaced on the power transmission cable; A base frame is provided on which a winding roller is rotatably mounted. Transmission cables are wound in layers around the outer periphery of the winding roller. Two baffles are provided at both ends of the winding roller. Multiple connectors are radially distributed on surfaces of the two baffles adjacent to each other. Each connector is located between two adjacent layers of transmission cables. The multiple connectors are all in electrical contact with the wiring ports on the transmission cables. A power supply box electrically connected to a plurality of connectors, wherein the current of the power supply box is transmitted to the lighting lamp through the connectors and the power transmission cable separated from the winding roller; A plurality of rotating rings are rotatably provided between the surfaces of the plurality of connectors and the two baffles of the winding roller that are close to each other. The plurality of rotating rings are coaxial and rotatably provided on the baffles, and the diameters of the plurality of rotating rings on the two baffles increase alternately. An axially distributed connector is fixedly provided on each rotating ring, and each connector has a U-shaped groove. A U-shaped conductive spring is provided in the U-shaped groove. The U-shaped conductive spring is electrically connected to the power supply box. There is a ring groove on the wiring port of the transmission cable, the bottom of the ring groove exposes the core of the transmission cable, the diameter of the U-shaped groove is smaller than the diameter of the transmission cable and larger than the core diameter of the transmission cable, and the diameter of the U-shaped conductive spring is smaller than the core diameter of the transmission cable.

2. The UAV lighting accessory according to claim 1, characterized in that: The outer periphery of one end of the ring groove of the transmission cable is coaxial and fixed with a connecting sleeve, the side wall of the connecting sleeve is hollow, and a blocking sleeve is axially slidably provided in the side wall of the connecting sleeve; A sealing sleeve is coaxially and fixedly arranged on the other end of the annular groove of the transmission cable, and the outer periphery of the sealing sleeve can contact with the blocking sleeve to seal the annular groove.

3. The UAV lighting accessory according to claim 2, characterized in that: An elastic member is provided inside the side wall of the connecting sleeve, one end of the elastic member is connected to the blocking sleeve, and the other end of the elastic member is connected to the side wall of the connecting sleeve.

4. The UAV lighting accessory according to claim 2, characterized in that: A sealing rubber ring is coaxially and fixedly arranged on the outer circumference of the sealing sleeve.

5. The UAV lighting accessory according to claim 1, characterized in that: A winding assembly is provided on the base frame, and the winding assembly is used to wind the transmission cable evenly and in layers on the winding roller.

6. The UAV lighting accessory according to claim 5, characterized in that: The winding assembly includes a fixed frame, on which two parallel screws are fixed, the axes of the two screws are parallel to the axis of the winding roller, sliding blocks are axially slidingly provided on the two screws, and two guide wheels are rotatably provided on the sliding blocks. The two guide wheels are in the same plane, and the transmission cable passes through the outer periphery of the two guide wheels and is in rolling contact with the outer periphery of the two guide wheels.

7. The UAV lighting accessory according to claim 6, characterized in that: A driving motor is also provided on the chassis, and a transmission gear is coaxially and fixedly provided on the end of the winding roller, and the driving motor is meshed with the transmission gear.

8. A UAV lighting system, characterized in that: A drone lighting accessory and a drone body comprising any one of claims 1-7.

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