Unmanned aerial vehicle lighting system and accessories thereof

Abstract

The invention relates to the technical field of unmanned aerial vehicle lighting power supply, in particular to an unmanned aerial vehicle lighting system and accessories thereof.The unmanned aerial vehicle lighting system comprises a power transmission cable and further comprises a winding roller, a plurality of wiring ports are formed in the power transmission cable at intervals, and the power transmission cable can be wound around the winding roller through rotation of the winding roller; a winding roller is arranged on the unmanned aerial vehicle, a plurality of connectors are arranged at the two tail ends of the winding roller and can be electrically connected with wiring ports of a power transmission cable, a power supply box is arranged to be electrically connected with the connectors, the wiring ports are formed in the power transmission cable, the connectors are arranged at the tail end of the winding roller, and therefore after the unmanned aerial vehicle hovers stably, current can be transmitted to the power supply box, and the power supply box is electrically connected with the power supply box. The current is directly transmitted to the illuminating lamp through the connector and the suspended power transmission cable, so that the current is prevented from passing through the multi-layer wound cable, the heat generated by resistance accumulation is reduced, the electric energy loss caused by heating is reduced, the power transmission efficiency is remarkably improved, and the stability and reliability of a power transmission system are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of unmanned aerial vehicle lighting power supply, and in particular to an unmanned aerial vehicle lighting system and its accessories. Background Art

[0002] At a time when electronic technology is changing with each passing day, the drone industry has ushered in a blowout development. Drones of various shapes and diverse functions continue to emerge, and their scope of application continues to expand. They are deeply integrated into multiple fields such as reconnaissance, surveying, aerial photography, and military, becoming a highly anticipated frontier direction in the development of modern science and technology.

[0003] When performing missions, drones often need to hover in the air and rely on the onboard lighting components to provide lighting. Long-term hovering lighting will quickly consume the drone's power, which is difficult to maintain with the onboard battery alone. For this reason, power supply boxes are usually configured on the ground to continuously power the drone's lighting components through transmission cables.

[0004] Due to the complex and changeable operating environment of drones, the hovering height and position are not the same, and sometimes longer transmission cables are needed. To ensure smooth operation in various scenarios, operators often prepare longer cables in advance and use winding devices to store excess parts.

[0005] However, the longer the transmission cable is, the greater the loss of electricity during transmission. This problem becomes more difficult during rescue operations when electricity resources are extremely precious. Not only that, a large number of cables are tightly wound in the winding device, and heat is difficult to dissipate, causing the cable temperature to continue to rise, which will not only further aggravate the energy loss, but in severe cases may even burn the insulation layer of the cable, causing damage to the equipment and affecting the smooth progress of the mission. Summary of the invention

[0006] Based on this, it is necessary to provide a drone lighting system and its accessories to address the problem that the current power transmission cables are long, which makes it difficult to dissipate heat, causing the cable temperature to continue to rise, resulting in increased power loss.

[0007] The above purpose is achieved through the following technical solutions: A lighting accessory for a drone, comprising: A lighting lamp, wherein the lighting lamp is used for lighting; A power transmission cable, one end of which is electrically connected to the lighting lamp, and a plurality of wiring ports are arranged at intervals on the power transmission cable; A base frame, wherein a winding roller is rotatably arranged on the base frame, the outer circumference of the winding roller is wound with the transmission cable in layers, and a plurality of connectors are radially distributed on the surface of the winding roller at two ends close to each other, each connector is located between two adjacent layers of transmission cables, and the connector is in electrical contact with the wiring port on the transmission cable; A power supply box is electrically connected to a plurality of connectors, and the current of the power supply box is transmitted to the lighting lamp through the connectors and the power transmission cables separated from the winding roller.

[0008] Furthermore, a plurality of rotating rings are rotatably arranged between the plurality of connectors and surfaces close to each other at the two ends of the winding roller, the plurality of rotating rings are coaxially arranged and the diameters of the plurality of rotating rings are alternately increased, and an axially distributed connector is fixedly arranged on each rotating ring, and each connector has a U-shaped groove, and a U-shaped conductive spring is arranged in the U-shaped groove, and the U-shaped conductive spring is electrically connected to the power supply box.

[0009] Furthermore, the wiring port of the transmission cable is provided with an annular groove, the bottom of the annular 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.

[0010] Furthermore, a connecting sleeve is coaxially and fixedly sleeved on the outer periphery of one end of the annular groove of the power transmission cable, the side wall of the connecting sleeve is hollow, and a blocking sleeve is axially slidably arranged inside 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 power transmission cable, and the outer periphery of the sealing sleeve can contact with the blocking sleeve to seal the annular groove.

[0011] Furthermore, 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.

[0012] Furthermore, a sealing rubber ring is coaxially and fixedly arranged on the outer circumference of the sealing sleeve.

[0013] Furthermore, a winding assembly is provided on the base frame, and the winding assembly is used to evenly and layeredly wind the power transmission cable on the winding roller.

[0014] Furthermore, the winding assembly includes a fixed frame, on which two parallel screws are fixedly arranged, the axes of the two screws are parallel to the axis of the winding roller, sliding blocks are axially slidably arranged on the two screws, and two guide wheels are rotatably arranged on the sliding blocks, the two guide wheels are in the same plane, and the transmission cable passes through the outer circumference of the two guide wheels and is in rolling contact with the outer circumference of the two guide wheels.

[0015] Furthermore, a driving motor is also arranged on the base frame, and a transmission gear is coaxially and fixedly arranged on the end of the winding roller, and the driving motor is meshed with the transmission gear.

[0016] The present invention also provides a drone lighting system, comprising the drone lighting accessory and a drone body.

[0017] The beneficial effects of the present invention are: The present invention sets a plurality of wiring ports on the transmission cable and sets a connector at the end of the winding roller, so that the current is directly transmitted to the lighting lamp through the connector and the suspended transmission cable after the UAV hovers stably, avoiding the current from passing through the multi-layered wound cables, reducing the heat generated by the accumulation of resistance, reducing the power loss caused by heat, and significantly improving the transmission efficiency, thereby ensuring the stability and reliability of the transmission system.

[0018] The present invention has multiple coaxial rotating rings with alternately increased diameters. The rotating rings can rotate and move axially. When the transmission cable is wound, the wiring port and the connector position do not correspond. The rotating rings can rotate and move under the push of the transmission cable to ensure that the wiring port enters the U-shaped groove of the connector to ensure line connection.

[0019] The present invention arranges a connecting sleeve and a blocking sleeve at one end of the wiring port ring groove and a sealing sleeve at the other end. The elastic member causes the blocking sleeve to extend out of the sealing ring groove in the initial state. When the wire enters the U-shaped groove, the blocking sleeve shrinks inward to prevent the wire core at the bottom of the ring groove from being corroded.

[0020] The present invention provides a sealing rubber ring on the outer periphery of the sealing sleeve. When the plugging sleeve is extended and contacts the sealing rubber ring, the sealing performance of the connection between the plugging sleeve and the sealing sleeve is improved, and the wire core is further protected.

[0021] The present invention sets a winding assembly, including a fixed frame, a lead screw, a sliding block and a guide wheel. The micro motor on the sliding block drives the sliding block to move along the axial direction of the lead screw in synchronization with the transmission cable, so that the transmission cable is evenly and layeredly wound on the winding roller; the driving motor on the base frame drives the winding roller to rotate, so as to complete the uniform winding of the transmission cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a lighting accessory for a drone provided in one embodiment of the present invention; Figure 2 A schematic diagram of the structure of a drone body of a drone lighting accessory provided by an embodiment of the present invention; Figure 3 A schematic diagram of the structure of a winding roller and a base frame of a lighting accessory for a drone provided in one embodiment of the present invention; Figure 4 for Figure 3 A schematic diagram of a cutaway view of a winding roller and a base frame of a lighting accessory for a drone provided in an embodiment; Figure 5 for Figure 4 A partial enlarged view of a portion of a lighting attachment X of a drone provided in an embodiment; Figure 6 A schematic diagram of the structure of a lighting accessory for a drone provided in one embodiment of the present invention, wherein the winding roller is provided with no power transmission cable and a chassis; Figure 7 A schematic diagram of the rotating ring structure of a lighting accessory for a drone provided in one embodiment of the present invention; Figure 8 A schematic diagram of the connector structure of a lighting accessory for a drone provided in one embodiment of the present invention; Fig. 9 A schematic diagram of the structure of a power transmission cable for a lighting accessory for a drone provided in one embodiment of the present invention; Fig.10 for Fig. 9 A schematic diagram of a cutaway diagram of a power transmission cable for a lighting accessory of a drone provided in an embodiment; Fig.11 A schematic diagram of a state in which a wiring port of a power transmission cable for a lighting accessory of a drone is connected to a connector provided by an embodiment of the present invention; Fig.12 for Fig.11 A schematic diagram of a cutaway diagram of a power transmission cable and connector for a UAV lighting accessory provided in one embodiment.

[0023] in: 100, drone body; 110, lighting; 120, power supply box; 130, chassis; 200, power 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; 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; 400, fixed frame; 410, lead screw; 420, sliding block; 430, guide wheel; 440, driving motor; 450, transmission gear. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is 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 used to limit the present invention.

[0025] The serial numbers assigned to the components herein, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in the present invention, unless otherwise specified, include direct and indirect connections (couplings). In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0026] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0027] Refer to the following Figure 1-Figure 12 To describe a drone lighting accessory provided by the present invention.

[0028] A lighting accessory for a drone includes a lighting lamp 110. The lighting lamp 110 is used to increase brightness. A drone often needs to hover in the air and relies on the lighting lamp 110 to provide lighting. Long-term hovering lighting will quickly consume the power of the drone, and it is difficult to maintain it with only the battery on the drone. Therefore, the lighting lamp 110 on the drone is connected to a power transmission cable 200. The other end of the power transmission cable 200 can be connected to a power supply box 120. The power supply box 120 is used to provide power for the lighting lamp 110, so that the drone can work for a long time. Since the operating environment of the drone is complex and changeable, the hovering height and position are different. Therefore, a longer power transmission cable 200 is required. In order to ensure smooth operation in various scenarios, operators often prepare longer power transmission cables 200 in advance. The lighting accessory for the drone also includes a base frame 130. A winding roller 300 is rotatably provided on the base frame 130. The longer power transmission cable 200 is wound around the outer circumference of the winding roller 300 in layers. When the height of the drone changes, the winding roller 300 can reel in or unreel the power transmission cable 200 to adapt to the height of the drone.

[0029] In order to avoid excessive heating caused by too many transmission cables 200 being wound on the winding roller 300, the present invention has multiple wiring ports 210 evenly spaced on the transmission cable 200, and two baffles 310 are provided at the two ends of the winding roller 300. Multiple connectors 350 are radially distributed on the surfaces of the two baffles 310 close to each other. The multiple connectors 350 are all located between two adjacent layers of transmission cables 200. The multiple connectors 350 are all electrically connected to the power supply box 120, and the multiple connectors 350 can be electrically connected to the wiring ports 210 on the transmission cable 200. When the connectors 350 are electrically connected to the transmission cable 200, the current of the power supply box 120 is transmitted to the lighting lamp 110 through the connectors 350 and the transmission cable 200, so that the lighting lamp 110 obtains electrical energy.

[0030] It should be noted that the wiring ports 210 on the power transmission cable 200 of the present invention have the same interval length. Whenever the power transmission cable 200 is wound layer by layer on the winding roller 300 and approaches the baffle 310, the wiring ports 210 on the power transmission cable 200 will gradually approach the connector 350. Figure 4 and Figure 5 As shown, the position of each layer of power transmission cable 200 close to the end of the winding roller 300 is close to the connector 350. When a layer of power transmission cable 200 is detached from the end of the winding roller 300, the wiring port 210 on the layer of power transmission cable 200 will be detached from the connector 350, until the UAV hovers to a suitable height, and the multiple layers of power transmission cables 200 are detached from the winding roller 300. At this time, the length change of the power transmission cable 200 between the UAV and the winding roller 300 stabilizes, and the power transmission cable 200 stops detaching from the winding roller 300. The end of the suspended power transmission cable 200, that is, the end close to the winding roller 300, is located at The wiring port 210 of a layer of transmission cables 200 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 wiring port 210 on this layer of transmission cables 200 and the connector 350 can transmit the electric energy of the power supply box 120 to the lighting lamp 110 through the transmission cable 200. At this time, the current of the power supply box 120 no longer passes through the transmission cable 200 wound on the winding roller 300, but directly passes through the connector 350 electrically connected to one end of the suspended transmission cable 200 and the suspended transmission cable 200.

[0031] The above design effectively avoids the problem of generating a large amount of heat due to resistance accumulation when current passes through the multi-layered transmission cable 200, and shortens the current transmission path. This not only reduces the power loss caused by heat, but also significantly improves the transmission efficiency and ensures the stability and reliability of the transmission system.

[0032] It should also be noted 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 suspended power transmission cable 200 is as follows: The current will flow along the path with the least resistance in the circuit. When the transmission cable 200 is detached from the winding roller 300, the loop resistance formed by the multiple layers of transmission cables 200 originally wound on the winding roller 300 is relatively large, while the path resistance formed by the connector 350 and the suspended transmission cable 200 is smaller. According to Ohm's law I=U / R (where I is current, U is voltage, and R is resistance), when the voltage is constant, the smaller the resistance, the easier it is for the current to pass. Therefore, the current will preferentially choose to transmit through the path with lower resistance through the connector 350 and the suspended transmission cable 200, instead of flowing through the multiple layers of transmission cables 200 on the winding roller 300.

[0033] Specifically, Figure 3 and Figure 6 As shown, a plurality of rotating rings 330 are arranged between the surfaces of the plurality of connectors 350 and the two baffles 310 of the winding roller 300 that are close to each other. The plurality of rotating rings 330 are coaxially and rotatably arranged on the baffles 310, and the diameters of the plurality of rotating rings 330 on the two baffles 310 are alternately increased, as shown in FIG. Figure 4 and Figure 5 As shown, this embodiment takes four rotating rings 330 as an example, and the diameters of the four rotating rings 330 are arranged in the order from small to large: the inner rotating ring 330 on the rightmost side, the inner rotating ring 330 on the leftmost side, the outer rotating ring 330 on the rightmost side, and the outer rotating ring 330 on the leftmost side. Each rotating ring 330 is fixedly provided with an axially distributed connector 350, so that the connector 350 on each rotating ring 330 is located between two adjacent layers of transmission cables 200, so as to facilitate the connection between the connector 350 and the wiring port 210 of the transmission cable 200.

[0034] It should be noted that each rotating ring 330 can rotate around the axis of the baffle 310 and can move along the axial direction of the baffle 310, and each connector 350 is provided with a U-shaped groove 360, such as Figure 7 and Figure 8 As shown, a U-shaped conductive spring piece 370 is disposed in the U-shaped groove 360 ​​, and the U-shaped conductive spring piece 370 can be electrically connected to the power transmission cable 200 .

[0035] In the process of winding the transmission cable 200 layer by layer onto the winding roller 300, the transmission cable 200 can be gradually wound from one end of the winding roller 300 to the other end of the winding roller 300. At this time, the connection port 210 of the transmission cable 200 located at the other end of the winding roller 300 can just move into the U-shaped groove 360 ​​of the connector 350. When the connection port 210 is located in the U-shaped groove 360 ​​of the connector 350, the transmission cable 200 begins to change direction to wind the second layer. After the transmission cable 200 moves to the end of the winding roller 300 again, it will contact another connector 350. In other words, the connection ports 210 on each layer of the transmission cable 200 can be electrically connected to the corresponding connector 350, and so on. Until all the transmission cables 200 are wound on the winding roller 300, each connection port 210 on the transmission cable 200 is correspondingly connected to each connector 350.

[0036] It should be noted that the multiple rotating rings 330 of the present invention are provided to adapt to special situations. For example, when the transmission cable 200 is wound close to the end of the winding roller 300, the wiring port 210 on the transmission cable 200 may not correspond to the position of the connector 350. That is, when the transmission cable 200 is in contact with the connector 350, the wiring port 210 on the transmission cable 200 is at a certain distance from the connector 350. Since the connector 350 is not connected to the transmission cable 200 but in sliding contact, the transmission cable 200 will continue to be wound at this time. The connector 350 is pushed, and the connector 350 drives the rotating ring 330 to rotate. At this time, the connector 350 will gradually approach the connection port 210 on the transmission cable 200 under the action of the rotation. Since the continued winding of the transmission cable 200 will cause the width of the transmission cable 200 wound on the winding roller 300 to gradually increase, the axially movable rotating ring 330 will be pushed to move axially away from the winding roller 300 to adapt to special situations, thereby ensuring that the connection port 210 of the transmission cable 200 can enter the U-shaped groove 360 ​​of the connector 350.

[0037] To facilitate the connection between the rotating ring 330 and the baffle 310, as shown in FIG. Figure 4 , Figure 5 , Figure 6 and Figure 7As shown, a plurality of annular grooves 320 are provided on one end surface of the two baffles 310 close to each other, and three sliding rods 340 are provided on the end surface of each rotating ring 330 close to the baffle 310. The three sliding rods 340 are slidably arranged in the annular groove 320. A limiting plate is provided on the end surface of the annular groove 320. The limiting plate limits the sliding rod 340 from leaving the annular groove 320, and a magnet (not shown in the figure) is provided in each annular groove 320. A magnet (not shown in the figure) is also provided on the sliding rod 340 of each rotating ring 330 located in the annular groove 320. The two positive poles or negative poles of the two magnets are close to each other. Due to the principle that magnets with the same poles repel each other, the two magnets push the protrusions at the ends of the three sliding rods 340 to press against the limiting plate. When the rotating ring 330 is subjected to axial thrust, it will shrink toward the annular groove 320.

[0038] It should be noted that the present invention is not limited to using two magnets to push the rotating ring 330 , but may also use other elastic elements such as compression springs to push the rotating ring 330 , which is not specifically limited here.

[0039] More specifically, as shown in the figure, the connection port 210 on the power transmission cable 200 of this embodiment has an annular groove 220, the bottom of the annular groove 220 is an exposed wire core 230, and the diameter of the U-shaped groove 360 ​​in this embodiment is smaller than the diameter of the power transmission cable 200 and larger than the diameter of the wire core 230 of the power transmission cable 200, so when the connection port of the power transmission cable 200 is close to the U-shaped groove 360 ​​of the connector 350, as shown in FIG. Fig.11 and Fig.12 As shown, the core 230 of the transmission cable 200 will be stuck in the U-shaped groove 360. The diameter of the U-shaped conductive spring clip 370 in the U-shaped groove is slightly smaller than the diameter of the core 230. Therefore, the U-shaped conductive spring clip 370 in the U-shaped groove 360 ​​clamps the core 230 of the transmission cable 200. At the same time, a connecting wire 380 is arranged between the other end of the U-shaped conductive spring clip 370 and the power supply box 120. The current of the power supply box 120 is transmitted to the transmission cable 200 through the connecting wire 380 and the U-shaped conductive spring clip 370.

[0040] In a further embodiment, Fig. 9 and Fig.10As shown, since the power transmission cable 200 of the present invention is provided with wiring ports 210 at intervals, and the wire core 230 is exposed at the bottom of the annular groove 220 of the wiring port 210, in order to prevent the wire core 230 from being corroded, a connecting sleeve 240 is coaxially and fixedly sleeved on the outer periphery of one end of the annular groove 220 of the wiring port 210, the side wall of the connecting sleeve 240 is hollow, and a blocking sleeve 250 is axially slidably arranged in the side wall of the connecting sleeve 240, and the blocking sleeve 250 can be extended from the side wall of the connecting sleeve 240, and a sealing sleeve 270 is coaxially and fixedly arranged on the other end of the annular groove 220 of the wiring port 210, when the blocking sleeve 250 is extended from the side wall of the connecting sleeve 240, the annular groove 220 can be blocked, and one end of the blocking sleeve 250 can contact the outer periphery of the sealing sleeve 270 to block the annular groove 220, thereby preventing the wire core 230 at the bottom of the annular groove 220 from being corroded.

[0041] 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 sealing 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 sealing 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 piece 370 to realize current transmission.

[0042] 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 arranged 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.

[0043] Specifically, in this embodiment, a winding assembly is further provided, and the winding assembly is used to evenly and layeredly wind the power transmission cable 200 on the winding roller 300, such as Figure 3As shown, the winding assembly includes a fixed frame 400, on which two parallel lead screws 410 are fixedly arranged, the axes of the two lead screws 410 are parallel to the axis of the winding roller 300, and sliding blocks 420 are axially slidably arranged on the two lead screws 410, and two guide wheels 430 are rotatably arranged on the sliding blocks 420, the two guide wheels 430 are in the same plane, and the transmission cable 200 passes through the outer peripheries of the two guide wheels 430 and rolls in contact with the outer peripheries of the two guide wheels 430.

[0044] 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 arranged on the sliding block 420 in this embodiment, and the rotating shaft of the micro motor is spirally matched 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.

[0045] It can be understood that, during the process of the power transmission cable 200 being detached from the winding roller 300, the power transmission cable 200 will gradually move from one end of the winding roller 300 to the other end, and detach layer by layer, and the sliding block 420 drives the guide wheel 430 to move synchronously with the power transmission cable 200. When the power transmission cable 200 moves to the end of the winding roller 300, the moving direction will be changed. At this time, the micro motor will rotate in the reverse direction to drive the sliding block 420 to move in the reverse direction on the lead screw 410, so that the sliding block 420 moves synchronously with the power transmission cable 200. Similarly, when the winding roller 30 0 when the transmission cable 200 is rolled up, the micro motor drives the sliding block 420 to move axially on the lead screw 410 to move the transmission cable 200 from one end of the winding roller 300 to the other end, so that the transmission cable 200 is evenly wound on the winding roller 300, and after winding one layer, the sliding block 420 moves in the reverse direction to drive the transmission cable 200 to move in the reverse direction to start winding a new layer, and so on, the sliding block 420 moves back and forth on the lead screw 410 so that the transmission cable 200 can be evenly and layer by layer wound on the winding roller 300.

[0046] More specifically, a driving motor 440 is fixedly installed on the base frame 130 in this embodiment, and a transmission gear 450 is coaxially and fixedly installed on one end of the winding roller 300. The rotating shaft of the driving motor 440 is meshed with the transmission gear 450. When the driving motor 440 rotates, it can drive the transmission gear 450 to rotate. The transmission gear 450 drives the winding roller 300 to rotate, thereby completing the uniform winding of the transmission cable 200.

[0047] The specific working process of a UAV lighting accessory provided by the present invention is described in combination with the above embodiments: Before starting the drone, the winding assembly evenly winds the transmission cable 200 layer by layer on the winding roller 300, and the connection ports 210 on each layer of the transmission cable 200 on the winding roller 300 are connected to the connector 350 on the baffle 310 of the winding roller 300, and the U-shaped conductive spring clip 370 in the U-shaped groove 360 ​​of the connection head contacts the wire core 230 at the bottom of the annular groove 220 at the connection port, and the U-shaped conductive spring clip 370 is connected to the power supply box 120 via a connecting wire 380.

[0048] The drone is started, and the drone pulls the transmission cable 200 to unwind from the winding roller 300. During the unwinding process, the transmission cable 200 is separated from the winding roller 300 layer by layer. When each layer of the transmission cable 200 is separated, the wiring port 210 on the corresponding layer of the transmission cable 200 will be separated from the U-shaped groove 360 ​​on the connector 350. In other words, the exposed wire core 230 in the annular 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 sealing sleeve 250 on the outer periphery of the annular groove 220 is no longer blocked by the U-shaped groove, and the sealing sleeve 250 is connected to the connecting sleeve. Under the action of the resetting of the elastic member 260 in the side wall 240, the blocking sleeve 250 is pushed out from the inside of the side wall of the connecting sleeve 240, and the blocking sleeve 250 is extended until its inner periphery contacts with the outer periphery of the sealing sleeve 270 at the other end of the annular groove 220. A sealing rubber ring 280 is provided on the outer periphery of the sealing sleeve 270. The sealing sleeve 270 contacts with the sealing rubber ring 280 to improve the sealing performance of the connection between the sealing sleeve 270 and the blocking sleeve 250. It should be noted that all the exposed wire cores 230 on the wiring port 210 that is separated from the connector 350 are sealed by the blocking sleeve 250 to prevent external erosion.

[0049] After the drone hovers, the length of the transmission cable 200 stabilizes. At this time, the suspended transmission cable 200 is connected to the connection port 210 on one end of the winding roller 300 and the connector 350 on the baffle 310 of the winding roller 300. The exposed wire core 230 on the connection port 210 contacts the U-shaped conductive spring clip 370 in the connector 350. The current of the power supply box 120 passes through the U-shaped conductive spring clip 370 and the suspended transmission cable 200, and no longer passes through the transmission cable 200 wound layer by layer on the winding roller 300, thereby avoiding the problem of generating a large amount of heat due to resistance accumulation and shortening the current transmission path.

[0050] The present invention also provides a drone lighting system, including a drone body 100 and a drone lighting accessory, wherein a lighting lamp 110 of the lighting accessory is connected to the lower end of the drone body 100 , and the lighting lamp 110 is used to provide lighting for the drone body 100 .

[0051] The technical features of the above embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0052] The above-described embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A lighting accessory for a drone, characterized in that: include: A lighting lamp, wherein the lighting lamp is used for lighting; A power transmission cable, one end of which is electrically connected to the lighting lamp, and a plurality of wiring ports are arranged at intervals on the power transmission cable; A base frame, wherein a winding roller is rotatably arranged on the base frame, the outer circumference of the winding roller is wound with the transmission cable in layers, and a plurality of connectors are radially distributed on the surface of the winding roller at two ends close to each other, each connector is located between two adjacent layers of transmission cables, and the connector is in electrical contact with the wiring port on the transmission cable; A power supply box is electrically connected to a plurality of connectors, and the current of the power supply box is transmitted to the lighting lamp through the connectors and the power transmission cables separated from the winding roller.

2. The drone lighting accessory according to claim 1, characterized in that: A plurality of rotating rings are rotatably arranged between the plurality of connectors and surfaces close to each other at the two ends of the winding roller. The plurality of rotating rings are coaxially arranged and the diameters of the plurality of rotating rings are alternately increased. An axially distributed connector is fixedly arranged on each rotating ring. Each connector has a U-shaped groove. A U-shaped conductive spring is arranged in the U-shaped groove. The U-shaped conductive spring is electrically connected to the power supply box.

3. The drone lighting accessory according to claim 2, characterized in that: The wiring port of the power transmission cable is provided with an annular groove, the bottom of the annular groove exposes the core of the power transmission cable, the diameter of the U-shaped groove is smaller than the diameter of the power transmission cable and larger than the core diameter of the power transmission cable, and the diameter of the U-shaped conductive spring is smaller than the core diameter of the power transmission cable.

4. The drone lighting accessory according to claim 1, characterized in that: A connecting sleeve is coaxially and fixedly sleeved on the outer periphery of one end of the annular groove of the power transmission cable, the side wall of the connecting sleeve is hollow, and a blocking sleeve is axially slidably arranged inside 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 power transmission cable, and the outer periphery of the sealing sleeve can contact with the blocking sleeve to seal the annular groove.

5. The drone lighting accessory according to claim 4, characterized in that: An elastic member is disposed 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.

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

7. The drone lighting accessory according to claim 1, characterized in that: The base frame is provided with a winding assembly, which is used to evenly and layer-wrap the power transmission cable around the winding roller.

8. The drone lighting accessory according to claim 7, characterized in that: The winding assembly includes a fixed frame, on which two parallel lead screws are fixedly arranged, the axes of the two lead screws are parallel to the axis of the winding roller, sliding blocks are axially slidably arranged on the two lead screws, and two guide wheels are rotatably arranged on the sliding blocks, and the two guide wheels are in the same plane, and the transmission cable passes through the outer circumference of the two guide wheels and is in rolling contact with the outer circumference of the two guide wheels.

9. The drone lighting accessory according to claim 8, characterized in that: A driving motor is also arranged on the base frame, and a transmission gear is coaxially and fixedly arranged on the end of the winding roller, and the driving motor is meshed with the transmission gear.

10. A UAV lighting system, characterized in that: The drone lighting accessory and the drone body include any one of claims 1-9.

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