Photovoltaic panel wiring terminal protection device

Abstract

The invention provides a photovoltaic panel wiring terminal protection device, and belongs to the photovoltaic technical field, the photovoltaic panel wiring terminal protection device comprises a protection box, a heat dissipation waterproof and anti-falling assembly and a bird repelling assembly, and the heat dissipation waterproof and anti-falling assembly comprises a fixed frame hermetically communicated with the top of a first connecting frame. The rainwater enters the protection box and enters the first connecting frame through the fixing frame and enters the protection box for heat dissipation, the second connecting frame at the bottom discharges hot air, air circulation and efficient heat dissipation are achieved, in rainy days, rainwater can be prevented from entering the protection box through the design of the bottom of the air opening of the air duct, and when part of the rainwater is blown into the air duct by wind and enters the inclined frame, the rainwater can be prevented from entering the protection box. When a user installs the connecting line, the connecting line can be fixed by driving the limiting seat to be close to the supporting seat, the connecting line is prevented from being dragged and falling off easily, and therefore the purposes of heat dissipation, water prevention and falling prevention are achieved.

Description

Technical Field

[0001] This invention belongs to the field of photovoltaic technology, specifically relating to a photovoltaic panel terminal protection device. Background Technology

[0002] Photovoltaic power generation is a technology that directly converts light energy into electrical energy using the photovoltaic effect at semiconductor interfaces. It mainly consists of three parts: solar panels (modules), controllers, and inverters, with the main components being electronic devices. Solar cells are connected in series and then encapsulated for protection to form large-area solar cell modules. Combined with components such as power controllers, this forms a photovoltaic power generation device. A search revealed that application number "CN201711402695.6" discloses "a high-strength photovoltaic junction box anti-detachment terminal," which describes "passing two connected wires through a first conduit and a second conduit respectively, then extending the ends of the wires into grooves on the substrate, and overlapping the ends of the wires. A clamping plate is then fixed with screws, and the screws are tightened. Because the upper surface of the substrate has uniformly serrated first anti-slip protrusions, and the lower surface of the clamping plate has uniformly..." The document describes a method using a serrated second anti-slip protrusion to firmly secure the ends of the wires. This is achieved by passing the two connected wires through a first and second conduit, extending the ends of the wires into grooves on the substrate, and overlapping the ends. A clamping plate is then secured with screws. While the serrated first anti-slip protrusions on the upper surface of the substrate and the serrated second anti-slip protrusions on the lower surface of the clamping plate effectively secure the wire ends, the document still has the following problems in practical use: In actual use, the lack of efficient heat dissipation, waterproofing and anti-fall-off functions makes it easy to be damaged during use. In addition, it is inconvenient to scare away birds, which makes it easy for birds to build nests on the device.

[0003] Therefore, providing a device that can achieve efficient heat dissipation, waterproofing, and anti-fall-off properties, as well as bird repellency, is of great practical value. Summary of the Invention

[0004] The purpose of this invention is to provide a photovoltaic panel terminal protection device to solve the above-mentioned technical problems.

[0005] This invention provides a photovoltaic panel terminal protection device, including a protection box, a heat dissipation, waterproofing and anti-detachment component, and a bird-repelling component.

[0006] The protective box has a connector at the middle of one end of its inner wall, and a first connecting frame is sealed and connected to the top of the protective box. The heat dissipation, waterproofing, and anti-fall-off assembly includes a fixed frame that is sealed and connected to the top of the first connecting frame. Both sides of the fixed frame are sealed and connected to inclined frames. One side of each of the two inclined frames is sealed and connected to a fan duct. Both sides of the inner wall of the fixed frame are provided with a first fan. A connecting plate is provided inside the first connecting frame. Two ventilation slots are opened inside the connecting plate. A second fan is provided at the top of each of the two ventilation slots. Two support seats are provided at one end of the inner wall of the protective box. Two limiting rods are provided at one end of the inner wall of the protective box. A first moving plate is slidably connected to the outer wall of each of the two limiting rods. A limiting seat is provided at the bottom of each of the two first moving plates. The bird deterrent assembly includes a connecting box located at the top of a fixed frame. A torque motor is installed at the bottom of the inner wall of the connecting box. A turntable is installed at the output shaft end of the torque motor. A connecting ring is installed at the top of the turntable. The outer wall of the connecting ring is rotatably connected to the top of the inner wall of the connecting box. A lampshade is installed at the top of the connecting ring. Several flashing slots are opened on the outer wall and top of the lampshade. Several reflectors are installed on the outer wall and top of the lampshade. An illumination lamp is installed at the top of the connecting box.

[0007] In one embodiment of the present invention, a reinforcing frame is provided on both sides of the torque motor, a reinforcing block is provided at one end of the torque motor, the ends of the two reinforcing frames and the reinforcing block are fixedly connected to the inner wall of the connecting box, and a semi-circular groove is provided inside the two support seats and the limiting seat.

[0008] In one embodiment of the present invention, the fire extinguishing assembly includes a vacuum pump disposed at one end of a protective box, a suction tube sealed and connected to the top of the vacuum pump, the end of the suction tube being sealed and connected to the protective box, several fixing plates disposed at both ends of the two air ducts, several electric telescopic rods disposed inside the several fixing plates, two sealing plates disposed at the bottom of the several electric telescopic rods, and sealing strips disposed at the top of the two sealing plates, an alarm light disposed on one side of the top of the connecting box, a signal transceiver disposed on the other side of the top of the connecting box, and a flame sensor disposed at the bottom of the connecting plate.

[0009] In one embodiment of the present invention, the bottom of the protective box is sealed and connected to a second connecting frame, and the bottom and interior of the second connecting frame are provided with the same structure as the first connecting frame.

[0010] In one embodiment of the present invention, a plurality of connecting wires are interwoven inside both sides of the protective box, one side of each of the plurality of connecting wires is interwoven with a connector, and a sealing ring is provided at the connection point between the plurality of connecting wires and the protective box.

[0011] In one embodiment of the present invention, two lead screw nuts are rotatably connected to the bottom of one end of the inner wall of the protective box, and a second movable plate is threadedly connected to the outer wall of each of the two lead screw nuts. A positioning strip is provided at one end of each of the two limiting rods.

[0012] In one embodiment of the present invention, a rotating head is rotatably connected to the bottom interior of each of the two positioning bars, a screw nut is fixedly connected to one end of each of the two rotating heads, and a gripping head is provided at the other end of each of the two rotating heads.

[0013] In one embodiment of the present invention, the outer wall of the rotating head is provided with a gear, the top of the gear is engaged with an elastic plate, the top of the elastic plate is provided with a reinforcing plate, and one end of the reinforcing plate is fixedly connected to a positioning strip.

[0014] In one embodiment of the present invention, two mounting brackets are provided at one end of the protective box, and mounting holes are provided inside the two mounting brackets. A protective door is hinged to one end of the protective box, and a handle is provided at one end of the protective door. A door lock is embedded inside the handle. A controller is provided at one corner of the protective box.

[0015] In one embodiment of the present invention, the first fan, the second fan, the torque motor, the lighting fixture, the vacuum pump, the electric telescopic rod, the alarm light, the flame sensor, and the signal transceiver are all electrically connected to the controller, and the controller is electrically connected to an external power supply.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1) The built-in air duct allows the controller to turn on the first and second fans when heat dissipation is needed. The first fan generates suction, which draws outside air into the inclined frame through the air duct, then into the first connecting frame through the fixed frame, and finally into the protective box for heat dissipation. The second connecting frame at the bottom will exhaust the hot air, achieving air circulation and efficient heat dissipation. In rainy weather, the bottom design of the air duct vent can be used to prevent rainwater from entering the protective box. When some rainwater is blown into the air duct and into the inclined frame, the inclined frame will use its tilt angle to discharge the rainwater, achieving waterproofing. After the user has installed the connecting wire, the connecting wire can be fixed by moving the drive limit seat close to the support seat to prevent the connecting wire from being dragged and falling off, thus achieving the purpose of heat dissipation, waterproofing, and preventing falling off. 2) With the included torque motor, when bird deterrence is needed during the day, the controller can turn on the torque motor, which drives the turntable to rotate. The rotation of the turntable will drive the connecting ring to rotate, which in turn will drive the lampshade to rotate rapidly. The rotation of the lampshade will drive the reflector to rotate, which will quickly reflect sunlight, disturbing the vision of nearby birds and causing them to move away from the protective box. At night, when the lighting is turned on, the rotating lampshade will use the flashing slot to flash and drive away the birds, thus achieving the purpose of bird deterrence. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure at the other end of the present invention; Figure 3 This is a schematic diagram of the cross-sectional structure of one end of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of one side of the present invention; Figure 5 This is a schematic diagram of the internal structure of the connector box of the present invention; Figure 6 This is an enlarged structural diagram of the sealing plate of the present invention; Figure 7 This is an enlarged structural diagram of the gear in this invention.

[0018] In the diagram: 100, Protective box; 110, Connector; 120, First connecting frame; 200, Heat dissipation, waterproofing and anti-fall-off assembly; 210, Fixing frame; 220, Slanted frame; 230, Air duct; 240, First fan; 250, Connecting plate; 260, Second fan; 270, Support base; 280, Limiting rod; 290, First moving plate; 2910, Limiting seat; 300, Bird deterrent assembly; 310, Connecting box; 320, Torque motor; 330, Turntable; 340, Connecting ring; 350, Lampshade; 360, Reflector; 370, Lighting lamp; 400, Reinforcing frame; 500, Reinforcement. Block; 600, Fire extinguishing assembly; 610, Vacuum pump; 620, Suction hose; 630, Fixing plate; 640, Electric telescopic rod; 650, Sealing plate; 660, Sealing strip; 670, Alarm light; 680, Signal transceiver; 690, Flame sensor; 700, Second connecting frame; 800, Connecting wire; 900, Sealing ring; 1000, Screw nut; 1100, Second moving plate; 1200, Positioning strip; 1300, Rotating head; 1400, Grip head; 1500, Gear; 1600, Elastic sheet; 1700, Reinforcing plate; 1800, Mounting bracket; 1900, Protective door. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Example

[0020] Please see Figure 1-7 A photovoltaic panel terminal protection device includes a protection box 100, a heat dissipation, waterproof and anti-fall-off component 200, and a bird-repelling component 300.

[0021] Please refer to the details. Figure 1 A connector 110 is provided at the middle of one end of the inner wall of the protective box 100, and a first connecting frame 120 is sealed and connected to the top of the protective box 100.

[0022] Please see Figure 3-6 The heat dissipation, waterproofing, and anti-fall-off component 200 includes a fixed frame 210 sealed and connected to the top of the first connecting frame 120. Both sides of the fixed frame 210 are sealed and connected to inclined frames 220. One side of each of the two inclined frames 220 is sealed and connected to a fan duct 230. Both sides of the inner wall of the fixed frame 210 are provided with a first fan 240. The inside of the first connecting frame 120 is provided with a connecting plate 250. The inside of the connecting plate 250 has two ventilation slots. The top of each of the two ventilation slots is provided with a second fan 260. One end of the inner wall of the protective box 100 is provided with two support seats 270. One end of the inner wall of the protective box 100 is provided with two limiting rods 280. The outer walls of the two limiting rods 280 are slidably connected to a first moving plate 290. The bottom of each of the two first moving plates 290 is provided with a limiting seat 2910.

[0023] In one specific embodiment, the provided duct 230 facilitates the use of the controller to turn on the first fan 240 and the second fan 260 when heat dissipation is needed. The first fan 240 generates suction, which draws outside air into the inclined frame 220 through the duct 230. The air then passes through the fixed frame 210 into the first connecting frame 120 and into the protective box 100 for heat dissipation. The second connecting frame 700 at the bottom discharges the hot air, achieving air circulation and efficient heat dissipation. In rainy weather, the bottom design of the duct 230's air outlet prevents rainwater from entering the protective box 100. When some rainwater is blown into the duct 230 and into the inclined frame 220, the inclined frame 220 uses its tilt angle to discharge the rainwater, achieving waterproofing. After the user has installed the connecting cable 800, the driving limit seat 2910 can be brought close to the support seat 270 to fix the connecting cable 800, preventing it from being dragged and easily falling off, thus achieving the purpose of heat dissipation, waterproofing, and preventing falling off.

[0024] Please see Figure 4-5 The bird deterrent assembly 300 includes a connecting box 310 disposed on the top of the fixed frame 210. A torque motor 320 is disposed at the bottom of the inner wall of the connecting box 310. A turntable 330 is disposed at the end of the output shaft of the torque motor 320. A connecting ring 340 is disposed on the top of the turntable 330. The outer wall of the connecting ring 340 is rotatably connected to the top of the inner wall of the connecting box 310. A lampshade 350 is disposed on the top of the connecting ring 340. Several flashing slots are provided on the outer wall and top of the lampshade 350. Several reflectors 360 are provided on the outer wall and top of the lampshade 350. An illumination lamp 370 is disposed on the top of the connecting box 310.

[0025] In one specific embodiment, the included torque motor 320 allows the controller to activate the motor during daytime bird deterrence. The motor 320 drives the turntable 330 to rotate, which in turn drives the connecting ring 340 to rotate. This rotation, in turn, causes the lampshade 350 to rotate rapidly, which in turn drives the reflector 360 to rotate. The reflector 360 then rapidly reflects sunlight, disrupting the vision of nearby birds and driving them away from the protective box 100. At night, the lighting 370 is turned on, and when the lampshade 350 rotates, the flashing slots flash to drive away birds, thus achieving the purpose of bird deterrence.

[0026] Please see Figure 5 The torque motor 320 is provided with a reinforcing frame 400 on both sides and a reinforcing block 500 on one end. The ends of the two reinforcing frames 400 and the reinforcing block 500 are fixedly connected to the inner wall of the connecting box 310. The interiors of the two support seats 270 and the limiting seat 2910 are provided with semi-circular grooves.

[0027] In one specific embodiment, the reinforcement frame 400 is provided so that it can cooperate with the reinforcement block 500 during use, thereby supporting and fixing the torque motor 320, making the torque motor 320 more stable during use.

[0028] Please see Figure 1-6 The fire extinguishing assembly 600 includes a vacuum pump 610 located at one end of the protective box 100. The top of the vacuum pump 610 is sealed and connected to a suction pipe 620, and the end of the suction pipe 620 is sealed and connected to the protective box 100. Both ends of the two air ducts 230 are provided with several fixing plates 630. Several electric telescopic rods 640 are provided inside the fixing plates 630. Two sealing plates 650 are provided at the bottom of the electric telescopic rods 640. Sealing strips 660 are provided at the top of the two sealing plates 650. An alarm light 670 is provided on one side of the top of the connection box 310. A signal transceiver 680 is provided on the other side of the top of the connection box 310. A flame sensor 690 is provided at the bottom of the connection plate 250.

[0029] In one specific embodiment, a flame sensor 690 is provided to facilitate real-time monitoring of the protective box 100 during use. When a short circuit occurs inside the protective box 100, causing an open flame, the flame sensor 690 detects this and feeds the information back to the controller. The controller will then activate the vacuum pump 610, the electric telescopic rod 640, and the alarm light 670. The electric telescopic rod 640 will cause the sealing plate 650 to move upward. The upward movement of the sealing plate 650 will completely block the air duct 230 through the sealing strip 660. Meanwhile, the vacuum pump 610 will quickly extract the air from the protective box 100 through the suction pipe 620, creating a vacuum inside the protective box 100 to extinguish the fire. The alarm light 670 will flash to alert nearby personnel, and the signal transceiver 680 will send information to the user's terminal for maintenance, thereby achieving the purpose of extinguishing the fire.

[0030] Please see Figure 1 The bottom of the protective box 100 is sealed and connected to a second connecting frame 700. The bottom and interior of the second connecting frame 700 have the same structure as the first connecting frame 120.

[0031] In one specific embodiment, the protective box 100 provides convenient protection for the internal parts during use, preventing damage to the internal parts due to bumps and knocks, and improving stability.

[0032] Please see Figure 3 Several connecting wires 800 are interwoven inside both sides of the protective box 100. One side of each of the several connecting wires 800 is interwoven with a connector 110. A sealing ring 900 is provided at the connection point between the several connecting wires 800 and the protective box 100.

[0033] In one specific embodiment, the sealing ring 900 facilitates sealing at the connection between the connecting wire 800 and the protective box 100 during use, preventing water leakage and improving stability.

[0034] Please see Figure 4-7 The inner wall of the protective box 100 is rotatably connected to two lead screw nuts 1000 at one end. The outer walls of the two lead screw nuts 1000 are threaded with a second moving plate 1100. One end of each of the two limit rods 280 is provided with a positioning strip 1200.

[0035] In one specific embodiment, the positioning strip 1200 facilitates the support and fixation of the limiting rod 280 during use, making the limiting rod 280 more stable during use, improving stability and increasing practicality.

[0036] Please see Figure 7 Both positioning bars 1200 have rotating heads 1300 rotatably connected inside their bottoms. One end of each rotating head 1300 is fixedly connected with a screw nut 1000, and the other end of each rotating head 1300 is provided with a gripping head 1400.

[0037] In one specific embodiment, the provided grip head 1400 facilitates the fixing of the connecting wire 800 during use. The user rotates the grip head 1400 to drive the rotating head 1300, which in turn drives the lead screw nut 1000 to rotate. The rotation of the lead screw nut 1000, through the cooperation of the external thread and the limiting rod 280, causes the first moving plate 290, the second moving plate 1100, and the limiting seat 2910 to move closer to the support seat 270, thereby fixing the connecting wire 800 and preventing it from falling off.

[0038] Please see Figure 7 The outer wall of the rotating head 1300 is provided with a gear 1500, the top of the gear 1500 is engaged with an elastic plate 1600, the top of the elastic plate 1600 is provided with a reinforcing plate 1700, and one end of the reinforcing plate 1700 is fixedly connected to the positioning strip 1200.

[0039] In one specific embodiment, the provided gear 1500 facilitates the rotation of the head 1300 when it rotates. The gear 1500 rotates on the elastic plate 1600. When the gear 1500 stops rotating, the elastic plate 1600 will be locked on the gear 1500 to prevent it from rotating on its own, thus improving stability.

[0040] Please see Figure 2The protective box 100 has two mounting brackets 1800 at one end, and each mounting bracket 1800 has a mounting hole inside. The protective box 100 is hinged to a protective door 1900 at one end, and a handle is provided at one end of the protective door 1900. A door lock is embedded inside the handle. A controller is provided at one corner of the protective box 100.

[0041] In one specific embodiment, the provided mounting bracket 1800 facilitates the installation of the device on other equipment or walls by engaging the mounting bracket 1800 with the mounting holes, thereby improving stability and increasing convenience.

[0042] Please see Figure 1-7 The system includes a first fan 240, a second fan 260, and a torque motor 320. A lighting lamp 370, a vacuum pump 610, an electric telescopic pole 640, an alarm light 670, a flame sensor 690, and a signal transceiver 680 are all electrically connected to the controller, which is electrically connected to an external power supply.

[0043] In one specific embodiment, a controller is provided to facilitate power supply control of electrical equipment, enabling the equipment to be powered on when needed, thus avoiding situations where power cannot be supplied when power is required.

[0044] In use, the included air duct 230 facilitates heat dissipation. When heat dissipation is needed, the controller activates the first fan 240 and the second fan 260. The first fan 240 generates suction, drawing outside air through the air duct 230 into the inclined frame 220. This air then passes through the fixed frame 210 into the first connecting frame 120 and finally into the protective box 100 for heat dissipation. The second connecting frame 700 at the bottom expels the hot air, achieving air circulation and efficient heat dissipation. In rainy weather, the bottom design of the air duct 230 prevents rainwater from entering the protective box 100. If some rainwater is blown into the air duct 230 and then into the inclined frame 220, the inclined frame 220 uses its tilt angle to expel the water, achieving waterproofing. After the user installs the connecting cable 800, the air duct can be retracted. By driving the limit seat 2910 close to the support seat 270, the connecting wire 800 is fixed to prevent it from being dragged and easily falling off, thus achieving the purpose of heat dissipation, waterproofing, and preventing falling off. Then, through the provided torque motor 320, when it is necessary to drive away birds during the day, the controller turns on the torque motor 320, which drives the turntable 330 to rotate. The rotation of the turntable 330 will drive the connecting ring 340 to rotate, which will drive the lampshade 350 to rotate rapidly. The rotation of the lampshade 350 will drive the reflector 360 to rotate. Finally, the rotation of the reflector 360 will quickly reflect sunlight, disturbing the vision of nearby birds and causing them to move away from the protective box 100. At night, when the lighting 370 is turned on, the rotating lampshade 350 will use the flash slot to flash and drive away the birds, thus achieving the purpose of driving away birds.

[0045] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A photovoltaic panel junction box protection device, characterized in that, The utility model relates to a protection box, a heat dissipation waterproof and anti-falling assembly and a bird repelling assembly, and belongs to the technical field of protection boxes. The utility model discloses a protection box (100), the inside wall one end middle part of protection box (100) is provided with the connector (110), the top of protection box (100) is sealedly connected with first connecting frame (120); The heat dissipation waterproof and anti-falling assembly (200) includes a fixed frame (210) that is sealingly connected to the top of the first connecting frame (120), both sides of the fixed frame (210) are sealingly connected with inclined frames (220), one side of the two inclined frames (220) is sealingly connected with air ducts (230), the inner wall of the fixed frame (210) is provided with first fans (240) on both sides, the inside of the first connecting frame (120) is provided with a connecting plate (250), two ventilation grooves are formed in the inside of the connecting plate (250), the top of the two ventilation grooves is provided with second fans (260), the inside wall of the protection box (100) is provided with two support seats (270) at one end, the inside wall of the protection box (100) is provided with two limiting rods (280) at one end, the outer wall of the two limiting rods (280) is slidingly connected with first moving plates (290), the bottom of the two first moving plates (290) is provided with limiting seats (2910); The bird repelling assembly (300) includes a connecting box (310) provided on the top of the fixed frame (210), the inside wall of the connecting box (310) is provided with a torque motor (320) at the bottom, the output shaft end of the torque motor (320) is provided with a rotating disc (330), the top of the rotating disc (330) is provided with a connecting ring (340), the outer wall of the connecting ring (340) is rotatably connected with the top of the inside wall of the connecting box (310), the top of the connecting ring (340) is provided with a lampshade (350), a plurality of flashing grooves are formed in the outer wall and the top of the lampshade (350), a plurality of reflectors (360) are arranged on the outer wall and the top of the lampshade (350), and the top of the connecting box (310) is provided with an illuminating lamp (370).

2. A photovoltaic panel junction box protection device according to claim 1, characterized in that: The torque motor (320) is provided with reinforcing frames (400) on both sides, and the torque motor (320) is provided with a reinforcing block (500) at one end, the ends of the two reinforcing frames (400) and the reinforcing block (500) are fixedly connected with the inside wall of the connecting box (310), and the inside of the two support seats (270) and the limiting seats (2910) is provided with a semicircular groove.

3. A photovoltaic panel junction box protection device according to claim 2, characterized in that: The fire extinguishing assembly (600) comprises a vacuum pump (610) arranged at one end of the protection box (100), the top of the vacuum pump (610) is sealingly communicated with a suction pipe (620), the end of the suction pipe (620) is sealingly communicated with the protection box (100), the two ends of the two air ducts (230) are provided with a plurality of fixing plates (630), the interiors of the plurality of fixing plates (630) are provided with a plurality of electric telescopic rods (640), the bottoms of the plurality of electric telescopic rods (640) are provided with two sealing plates (650), the tops of the two sealing plates (650) are provided with sealing strips (660), one side of the top of the connecting box (310) is provided with an alarm lamp (670), the other side of the top of the connecting box (310) is provided with a signal transceiver (680), and the bottom of the connecting plate (250) is provided with a flame sensor (690).

4. A photovoltaic panel junction box protection device according to claim 3, characterized in that: The bottom of the protection box (100) is sealingly communicated with a second connecting frame (700), and the bottom and the interior of the second connecting frame (700) are provided with the same structure as the first connecting frame (120).

5. A photovoltaic panel junction box protection device according to claim 4, characterized in that: The interiors of the two sides of the protection box (100) are penetratingly connected with a plurality of connecting lines (800), one side of the plurality of connecting lines (800) is penetratingly connected with the connector (110), and the connecting positions of the plurality of connecting lines (800) and the protection box (100) are provided with sealing rings (900).

6. A photovoltaic panel junction box protection device according to claim 5, characterized in that: The bottom of one end of the inner wall of the protection box (100) is rotationally connected with two screw nuts (1000), the outer walls of the two screw nuts (1000) are threadedly connected with second moving plates (1100), and one end of each of the two limiting rods (280) is provided with a positioning strip (1200).

7. A photovoltaic panel junction box protection device according to claim 6, characterized in that: The interiors of the bottoms of the two positioning strips (1200) are rotationally connected with rotating heads (1300), one end of each of the two rotating heads (1300) is fixedly connected with a screw nut (1000), and the other end of each of the two rotating heads (1300) is provided with a holding head (1400).

8. A photovoltaic panel junction box protection device according to claim 7, characterized in that: The outer wall of the rotating head (1300) is provided with a gear (1500), the top of the gear (1500) is meshed with an elastic sheet (1600), the top of the elastic sheet (1600) is provided with a reinforcing plate (1700), and one end of the reinforcing plate (1700) is fixedly connected with the positioning strip (1200).

9. A photovoltaic panel junction box protection device according to claim 6, wherein: One end of the protection box (100) is provided with two mounting racks (1800), the interiors of the two mounting racks (1800) are provided with mounting holes, one end of the protection box (100) is hingedly connected with a protection door (1900), one end of the protection door (1900) is provided with a handle, the interior of the handle is embedded with a lock, and one side corner of the protection box (100) is provided with a controller.

10. A photovoltaic panel junction box protection device according to claim 9, characterized in that: The first fan (240), the second fan (260), the torque motor (320), the lighting lamp (370), the vacuum pump (610), the electric telescopic rod (640), the alarm lamp (670), the flame sensor (690) and the signal transceiver (680) are electrically connected with the controller, and the controller is electrically connected with the external power supply.

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