Cable branch box with moisture-proof heat dissipation structure

Abstract

The invention discloses a cable branch box with a moisture-proof heat dissipation structure, and the cable branch box comprises a cable box and a cable fixing seat fixed on the inner wall of the cable box, the side wall of the cable box is provided with heat dissipation holes, the cable branch box also comprises a water storage tank for collecting rainwater and a moisture-proof mechanism, and the water storage tank is located at the top of the cable box; the damp-proof mechanism comprises a baffle located between the cable fixing base and the heat dissipation holes, the side, facing the side wall of the cable box, of the baffle is aligned with the heat dissipation holes, a transmission part connecting the baffle and the water storage tank is arranged between the baffle and the water storage tank and slides on the top of the cable box, and an elastic part connecting the baffle and the inner wall of the top of the cable box is arranged between the baffle and the inner wall of the top of the cable box. The inner wall of the top of the cable box is provided with a heating pipe, the heating pipe is located between the cable fixing base and the side wall of the cable box, and the heating pipe and the baffle are arranged in a high-low staggered mode. A moisture-proof barrier is formed.

Description

Technical Field

[0001] The present application relates to the technical field of cable boxes, and in particular to a cable branch box with a moisture-proof and heat-dissipating structure. Background Art

[0002] With the rapid development of the modernization of the power industry, cables play a vital role in power transmission. In order to effectively protect the cable connection device, a cable box is usually added outside the cable connection device. In the scenario where the independent load distribution is relatively concentrated with small capacity, the cable branch box is widely used for multi-branch connection of cables, which greatly improves the flexibility and efficiency of cable wiring and promotes the optimized configuration and efficient operation of the power system.

[0003] Cable boxes are mostly used in outdoor environments, and their outer walls are usually provided with heat dissipation holes for better heat dissipation. However, when the ambient humidity is high or it rains, especially during the plum rain weather in the south, the air in the rain will carry tiny water molecules in the air into the interior of the cable box through the heat dissipation holes, causing the inside of the box to become damp. When the inside of the cable box continues to heat up, the tiny water molecules in the internal cavity of the cable box will gather into water droplets on the inner wall of the cable box. When the water droplets fall onto the electronic components, it will not only cause the connecting device inside the box to short-circuit, but may also directly cause damage to the equipment, seriously affecting the service life of the connecting device. Summary of the Invention

[0004] In order to improve the moisture-proof performance of a cable branch box, a cable branch box with a moisture-proof and heat-dissipating structure is provided.

[0005] The above-mentioned application objectives of this application are achieved through the following technical solutions: A cable branch box with a moisture-proof and heat-dissipating structure comprises a cable box and a cable fixing seat fixed to the inner wall of the cable box, a heat dissipation hole is opened on the side wall of the cable box, and also comprises a water tank for collecting rainwater and a moisture-proof mechanism, the water tank is located at the top of the cable box, and the moisture-proof mechanism comprises a baffle located between the cable fixing seat and the heat dissipation hole, the baffle is aligned with the heat dissipation hole on the side facing the side wall of the cable box, a transmission member connecting the baffle and the water tank is provided between the baffle and the water tank, and the transmission member slides on the top of the cable box, an elastic member connecting the baffle and the inner wall of the top of the cable box is provided between the baffle and the inner wall of the top of the cable box, a demister higher than the heat dissipation hole is provided on the side of the baffle facing the heat dissipation hole, a heating pipe is provided on the inner wall of the top of the cable box, the heating pipe is located between the cable fixing seat and the side wall of the cable box, and the heating pipe and the baffle are staggered in height.

[0006] By adopting the above technical solution, on rainy days, the water tank on the top of the water tank can collect rainwater to utilize rainwater resources. The water tank relies on its own gravity to press the baffle downward through the transmission parts. When the baffle moves to the bottom of the cable box, it can block the air entering from the heat dissipation holes. When the air with high humidity enters the cable box from the heat dissipation holes, the air containing small water molecules first passes through the demister. Due to the inertial impact of the gas, the small water molecules collide with the demister and gather into droplets attached to the surface of the demister. The air after passing through the demister is then dried and heated by the heating tube to evaporate the remaining water molecules and take them away, and finally flows into the cable box. The gravity of the collected rainwater is used to control the baffle to move downward, reducing the high-humidity air from entering the cable box, realizing moisture-proofing of the cable box, avoiding short circuit and equipment damage of the connecting device inside the box, and extending the service life of the connecting device.

[0007] Preferably, a support rod extending toward the heating tube is fixed on the bottom of the cable box, the end of the support rod is rotatably connected to a transmission gear, and a first rack meshing with the transmission gear is provided on the side of the baffle facing away from the heat dissipation hole; a transmission plate is provided on the side of the heating tube facing the cable fixing seat, a second rack meshing with the transmission gear is provided on the side of the transmission plate facing the heating tube, and a cooling fan is provided on the transmission plate.

[0008] By adopting the above technical solution, on the basis of the original moisture-proof function of the cable box, the movement of the baffle is used to drive the first rack, and the first rack drives the second rack through the transmission gear. Since the first rack and the second rack are respectively located on both sides of the transmission gear and have opposite transmission directions, when the water tank collects rainwater and drives the baffle to descend through the transmission member, the transmission plate rises synchronously through the transmission action of the second rack and the transmission gear; since a cooling fan is provided on the transmission plate, under normal conditions, the transmission plate is aligned with the cooling hole, and the cooling fan is matched with the cooling hole, thereby enhancing the cooling effect of the cable box under normal conditions; on rainy days, the air dried and heated by the heating tube is blown into the cable box through the cooling fan, thereby promoting the flow of air in the cable box, reducing the aggregation of water molecules, and improving the dryness of the cable box on rainy days.

[0009] Preferably, there are multiple cooling fans, and the cooling fans are distributed on the transmission plate in a rectangular array.

[0010] By adopting the above technical solution, multiple cooling fans are distributed in a rectangular array on the transmission plate, which increases the cooling area and cooling efficiency, can more effectively dissipate the heat in the cable branch box and promote air flow in the cable box.

[0011] Preferably, the heat dissipation mechanism, transmission gear and transmission plate are provided in two groups respectively, and are located on both sides of the cable box.

[0012] By adopting the above technical solution, the cable branch box adopts a design of two sets of heat dissipation mechanisms, transmission gears and transmission plates, which are located on both sides of the cable box respectively. This can increase the range and efficiency of moisture-proof heat dissipation, further improve the moisture-proof heat dissipation effect inside the cable box, effectively protect the cable connecting device, reduce failures caused by moisture, and extend the service life of the equipment.

[0013] Preferably, a vertical guide rail is fixed on the inner wall of the cable box, and the side walls of the baffle and the transmission plate are respectively embedded and slid in the guide rail.

[0014] By adopting the above technical solution, when the baffle and the transmission plate move, the guide rail can limit their movement direction so that they can only move in the vertical direction, reducing the horizontal deviation, allowing the baffle and the transmission plate to maintain a stable direction and trajectory during movement, and ensuring stable operation of the transmission between the two.

[0015] Preferably, a drainage groove is provided at the bottom of the side wall of the cable box, and a water storage seat is provided at the bottom of the baffle plate facing the heat dissipation hole. The height of the water storage seat in the vertical direction gradually decreases from the baffle plate toward the heat dissipation hole. A reset spring connecting the water storage seat and the baffle plate is provided between the one side of the water storage seat and the baffle plate, and a guide groove is provided at the bottom of the other side of the water storage seat, and the water storage seat slides into the drainage groove on the side facing the heat dissipation hole.

[0016] By adopting the above technical solution, on rainy days, water droplets on the surface of the demister will fall into the water storage seat below, and the water droplets in the water storage seat can flow out from the drainage trough. When the rainwater in the water tank is drained, the elastic member drives the baffle to move up, and the water storage seat is pressed into the cable box by the side wall of the cable box. The reset spring is compressed and stores energy, ensuring that the liquid in the water storage seat can be discharged from the drainage trough, avoiding the gravity generated by long-term storage of liquid in the water storage seat affecting the elastic member to drive the baffle to reset.

[0017] Preferably, the elastic member is a spring, the transmission member is rod-shaped, and the inner wall of the elastic member abuts against the outer wall of the transmission member.

[0018] By adopting the above technical solution, the rod-shaped transmission part can slide on the top of the cable box, providing a stable guide for the movement of the baffle. The inner wall of the spring abuts against the outer wall of the transmission part, which can ensure the stability of the spring's expansion and contraction direction and reduce the radial deformation of the spring, thereby ensuring that the baffle can be stably reset, which is conducive to the continued normal operation of the moisture-proof mechanism.

[0019] Preferably, a micro switch electrically connected to the heating tube is provided on the inner wall of the cable box, and a trigger member abutting against the micro switch is provided on the side of the upper end of the baffle facing the heating tube.

[0020] By adopting the above technical solution, when the water tank drives the baffle to move downward through the transmission part, the trigger part can be used to trigger the micro switch to realize the automatic opening and closing of the heating tube, avoiding the tedious manual operation, and timely and effectively heating and dehumidifying the cable box to prevent humid air and moisture from damaging the cable connecting device, thereby ensuring the normal operation of the cable branch box and extending the service life of the connecting device.

[0021] Preferably, inclined rain shields are provided on the four outer walls of the water tank.

[0022] By adopting the above technical solution, when the rainwater in the water tank overflows due to excessive accumulation, the rainproof shield can allow the overflowing rainwater in the water tank to flow to the outside of the cable box, reducing the situation of rainwater overflowing onto the cable box, ensuring that the rainwater collected in the water tank is only used for the operation of the moisture-proof structure, and reducing the impact on the cable box.

[0023] In summary, this application includes at least one of the following beneficial technical effects: 1. On rainy days, the water tank uses the gravity of the collected rainwater to control the baffle to move downward. The baffle reduces the amount of high-humidity air that directly enters the cable box. The high-humidity air passes through the demister, is dried and heated by the heater, and finally flows into the cable box, making the cable box moisture-proof, avoiding short circuits and equipment damage to the connecting device inside the box, and extending the service life of the connecting device. 2. When the baffle moves up and down, the transmission gear can be set to synchronously drive the transmission plate and the baffle to move in an alternating manner. Under normal conditions, the cooling fan and the heat dissipation holes enhance the heat dissipation effect of the cable box under normal conditions; on rainy days, the air dried and heated by the heating tube is blown into the cable box through the cooling fan, promoting air flow in the cable box, reducing the accumulation of water molecules, and improving the dryness of the cable box on rainy days. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 This is a structural diagram of the cable branch box in rainy weather; Figure 2 for Figure 1 Schematic diagram of the internal structure; Figure 3 Cross-section view of the cable branch box in rainy weather Figure 1 ; Figure 4 Cross-section view of the cable branch box in rainy weather Figure 2 ; Figure 5 This is a cross-sectional view of the cable branch box in normal state; Figure 6 Cross-section view of the cable branch box in rainy weather Figure 3 .

[0024] Figure numerals: 1. Cable box; 11. Front door; 12. Side door; 13. Heat dissipation hole; 14. Support frame; 15. Cable fixing seat; 16. Cable harness hole; 17. Drain trough; 2. Water storage tank; 21. Water storage tank; 22. Drainage hole; 23. Sealing plate; 24. Rain shield; 3. Moisture-proof cavity; 4. Moisture-proof mechanism; 41. Baffle; 411. Trigger member; 412. First rack; 42. Transmission member; 43. Elastic member; 44. Defogger; 45. Water storage seat; 451. Guide trough; 46. Reset spring; 5. Support rod; 51. Transmission gear; 6. Heating tube; 7. Micro switch; 8. Transmission plate; 81. Second rack; 82. Cooling fan; 9. Guide rail. DETAILED DESCRIPTION The following is a further detailed description with reference to the accompanying drawings: As attached Figure 1 and attached Figure 2 As shown, a cable branch box with a moisture-proof and heat-dissipating structure includes a cable box 1 and a water tank 2. A front door 11 and a side door 12 are rotatably installed on the front side of the cable box 1 and on both sides of the cable box 1. The front door 11 and the side doors 12 are connected to the cable box 1 through hinges. Door handles are fixedly installed on the front door 11 and the side doors 12. A plurality of one-to-one corresponding heat dissipation holes 13 are opened at the bottom of the two side doors 12. The heat dissipation holes 13 are in the shape of shutters and are used to dissipate heat inside the cable box 1.

[0025] A vertical support frame 14 is fixed in the cable box 1. The support frame 14 is provided with multiple cable fixing seats 15 on the side facing the front door 11. The cable fixing seats 15 are used to connect and fix cables of different branches. A plurality of cable harness holes 16 are opened at the bottom of the cable box 1. The cables pass through the cable harness holes 16 and are connected to the cable fixing seats 15. The cable fixing seats 15 are located in the middle of the cable box 1. The two sides of the cable fixing seats 15 form a moisture-proof cavity 3 with the inner walls of the two side doors 12 respectively.

[0026] The water tank 2 is located on the top of the cable box 1. A water tank 21 for collecting rainwater is opened on the top of the water tank 2. A drainage hole 22 connected to the outside is provided on one side of the water tank 21, and a sealing plate 23 that can slide up and down is provided at the mouth of the drainage hole 22 of the water tank 21. The cross-section of the sealing plate 23 facing the drainage hole 22 is larger than the cross-section of the drainage hole 22. The water tank 2 is similar to a simple container for collecting rainwater in life. The sealing plate 23 blocks the position of the drainage hole 22. On rainy days, the water tank 2 can collect rainwater in the water tank 21. When the rainwater in the water tank 21 needs to be discharged, the rainwater in the water tank 21 can be drained by simply pushing the sealing plate 23 upwards.

[0027] The outer walls of the water tank 2 are respectively fixed with inclined rain shields 24, which shield the outer walls of the cable box 1. When too much rainwater accumulates in the water tank 2 and overflows, the rain shields 24 can allow the overflowing rainwater in the water tank 2 to flow to the outside of the cable box 1, thereby reducing the situation where rainwater overflows onto the cable box 1.

[0028] As attached Figure 3 and attached Figure 4 As shown, the cable box 1 is further provided with a moisture-proof mechanism 4 and a support rod 5. The moisture-proof mechanism 4 includes a baffle 41, a transmission member 42 and an elastic member 43. The baffle 41 is a rectangular flat plate. The distance between the baffle 41 and the rear wall of the cable box 1 and the front door 11 of the cable box 1 is flush with the inner wall of the side wall of the cable box 1. The height of the baffle 41 in the vertical direction is higher than the height of the heat dissipation hole 13 in the vertical direction. There are two baffles 41, and the two baffles 41 are respectively located in the moisture-proof cavity 3 on both sides of the cable box 1. The transmission member 42 is a rod-shaped structure here. There are two transmission members 42 in the moisture-proof cavity 3 on the same side. One end of the transmission member 42 is fixedly connected to the upper end of the baffle 41, and the other end of the transmission member 42 passes through the top of the cable box 1 and The bottom of the water tank 2 is connected, and the transmission member 42 slides on the top of the cable box 1. The rod-shaped transmission member 42 can slide on the top of the cable box 1 to provide a stable guide for the movement of the baffle 41; the elastic member 43 is set as a spring here, and two elastic members 43 are set in the moisture-proof cavity 3 on the same side. One end of the elastic member 43 is fixedly connected to the upper end of the baffle 41, and the other end of the elastic member 43 is fixedly connected to the inner wall of the top of the cable box 1, and the elastic members 43 are respectively sleeved on the outside of the transmission member 42, and the inner wall of the elastic member 43 abuts against the outer wall of the transmission member 42. The inner wall of the elastic member 43 abuts against the outer wall of the transmission member 42, which can ensure that the elastic member 43 is stable in the extension and contraction direction and reduce the radial deformation of the elastic member 43.

[0029] On rainy days, the water tank 2 uses the gravity of the collected rainwater to control the baffle 41 to move downward through the transmission part 42. The baffle 41 provides shielding for the air entering from the heat dissipation hole 13, and reduces the high-humidity air from directly entering the cable box 1. While the baffle 41 moves downward, the elastic part 43 is stretched and energy is stored. When the rainwater in the water tank 2 is drained, the elastic potential energy stored in the elastic part 43 is released, and the elastic part 43 pulls the baffle 41 up again. Here, the elastic force of the elastic part 43 is greater than the weight of the baffle 41 itself plus the weight of the water tank 2 after the water is drained. This ensures that after the rainwater in the water tank 2 is drained, the elastic part 43 can stably pull up the baffle 41, thereby ensuring stable and continuous use.

[0030] A demister 44 and a water storage seat 45 are provided on the side of the baffle 41 facing the heat dissipation hole 13. The demister 44 is a corrugated plate made of a polymer composite material. An S-shaped air flow channel is formed between two adjacent demisters 44. The surface of the corrugated plate is hydrophobic to reduce the adhesion of droplets. The demister 44 has a good demisting effect and can remove small water molecules in the air with high humidity. The demister 44 is located at the upper end of the baffle 41, and the height of the demister 44 in the vertical direction is higher than the height of the heat dissipation hole 13 in the vertical direction. The height of the water storage seat 45 in the vertical direction gradually decreases from the baffle 41 toward the heat dissipation hole 13, and a return spring 46 connecting the two is provided between the side of the water storage seat 45 facing away from the heat dissipation hole 13 and the baffle 41. A guide groove 451 is provided at the bottom of the water storage seat 45 facing the heat dissipation hole 13, and a drainage groove 17 connected to the guide groove 451 is provided on the bottom of the side door 12. The end of the bottom of the side is set to an inclined shape, and the water storage seat 45 slides into the drainage groove 17 toward the heat dissipation hole 13.

[0031] On rainy days, when air with high humidity enters the moisture-proof cavity 3 from the heat dissipation holes 13, tiny water molecules in the air will collide with the demister 44. Some tiny water molecules will adhere to the surface of the demister 44 and gather into tiny water droplets, and fall into the water storage seat 45 after a long time. The water droplets stored in the water storage seat 45 can be discharged to the outside from the guide groove 451 along the drainage groove 17. When the water storage tank 2 is emptied of rainwater, the elastic member 43 drives the baffle 41 to move upward, and the water storage seat 45 is pressed into the cable box 1 by the side wall of the cable box 1. The reset spring 46 is compressed to store energy, thereby preventing the gravity generated by the long-term storage of liquid in the water storage seat 45 from affecting the elastic member 43 to drive the baffle 41 to reset.

[0032] As attached Figure 4 and attached Figure 5 As shown, a heating tube 6 is provided on the inner wall of the top of the cable box 1. The heating tube 6 is located between the cable fixing seat 15 and the side wall of the cable box 1. The heating tube 6 is located on the side of the baffle 41 facing away from the side door 12. The heating tube 6 and the baffle 41 are staggered in height and are respectively located in the two moisture-proof cavities 3. The heating tube 6 is generally composed of heating elements such as resistance wires. When powered on, it can generate heat to dry the moisture inside the cable box 1.

[0033] One end of the support rod 5 is fixed to the bottom of the cable box 1, and the other end of the support rod 5 extends toward the heating pipe 6, and this end is located below the heating pipe 6. The support rod 5 is a metal rod, and the end of the support rod 5 is rotatably connected to the transmission gear 51. The transmission gear 51 is made of metal and has a certain wear resistance. The side of the baffle 41 facing away from the heat dissipation hole 13 is provided with a first rack 412 meshed with the transmission gear 51, and the side of the heating pipe 6 facing the cable fixing seat 15 is provided with a transmission plate 8. The transmission plate 8 is a rectangular plate. The side of the transmission plate 8 facing the heating pipe 6 is provided with a second rack 81 meshed with the transmission gear 51, and a plurality of cooling fans 82 distributed in a rectangular array are provided on the transmission plate 8. Under normal conditions, the cooling fans 82 are matched with the cooling holes 13 to enhance the heat dissipation effect of the cable box 1 under normal conditions; on rainy days, the air dried and heated by the heating pipe 6 is blown into the cable box 1 through the cooling fan 82, promoting air flow in the cable box 1 and reducing the aggregation of water molecules.

[0034] As attached Figure 5 and attached Figure 6 As shown, a micro switch 7 is provided on the rear wall of the cable box 1 in the moisture-proof cavity 3. The micro switch 7 is electrically connected to the heating tube 6, and a trigger member 411 is provided on the side of the upper end of the baffle 41 facing the heating tube 6, which is in contact with the micro switch 7. The trigger member 411 is columnar. When the water tank 2 drives the baffle 41 downward through the transmission member 42, the trigger member 411 can be used to trigger the micro switch 7 to realize automatic opening and closing of the heating tube 6, thereby avoiding the tedious manual operation.

[0035] The rear wall of the cable box 1 is located in the moisture-proof cavity 3 on both sides and is provided with vertical guide rails 9. There are two guide rails 9 in the moisture-proof cavity 3 on the same side. One guide rail 9 extends from the top of the cable box 1 to the bottom of the cable box 1, and the transmission plate 8 slides toward one side of the rear wall of the circuit box 1 and is embedded in the guide rail 9. The other guide rail 9 extends from the top of the cable box 1 to above the heat dissipation hole 13, and the baffle 41 slides toward one side of the rear wall of the circuit box 1 and is embedded in the guide rail 9. When the elastic member 43 pulls the baffle 41 to reset, the baffle 41 and the transmission plate 8 are transmitted synchronously. The guide rail 9 can limit its moving direction so that it can only move in the vertical direction, reduce the horizontal deviation, and allow the baffle 41 and the transmission plate 8 to maintain a stable direction and trajectory during movement.

[0036] The implementation principle of this embodiment is: When it is rainy, the water storage tank 2 collects rainwater and the gravity increases, and the transmission member 42 presses down the baffle 41, and the elastic member 43 stretches and stores energy. The baffle 41 overcomes the elastic force of the elastic member 43 and moves downward until it completely blocks the heat dissipation hole 13, thereby preventing the external high-humidity air from directly entering the interior of the cable box 1. After the external humid air enters through the heat dissipation hole 13, it first hits the demister 44 at the front end of the baffle 41, and the water molecules condense into droplets attached to the surface. The droplets fall into the water storage seat 45 and are discharged out of the box through the guide groove 451 and the drainage groove 17. When the baffle 41 moves downward, the trigger member 411 synchronously triggers the micro switch 7 to start the heating tube 6. The air after passing through the demister 44 flows into the vicinity of the heating tube 6 and is heated to become dry hot air. The baffle 41 moves downward, driving the first rack 412 to move downward, and the transmission gear 51 rotates clockwise, driving the second rack 81 and the transmission plate 8 to move upward. The cooling fan 82 moves upward to the vicinity of the heating tube 6, blowing the heated dry hot air to the core area inside the cable box 1, forming a dry internal circulation airflow to prevent water vapor from condensing on the surface of the receiving device; When there is no rainwater accumulation in the water storage tank 2 or the staff drains the rainwater in the water storage tank 2, the elastic member 43 is in a naturally contracted state, and the resilience of the elastic member 43 drives the baffle 41 to move up to the initial position through the transmission member 42. At this time, the baffle 41 is completely out of the heat dissipation hole 13 area, and the heat dissipation hole 13 remains unobstructed. When the baffle 41 moves up, the trigger member 411 on the top of the baffle 41 disengages from the microswitch 7, the microswitch 7 disconnects the circuit, the heating tube 6 stops working, and the first rack 412 on the back of the baffle 41 moves up synchronously, driving the transmission gear 51 to rotate counterclockwise, driving the second rack 81 and the transmission plate 8 to move down, and the cooling fan 82 on the transmission plate 8 moves down to a position flush with the heat dissipation hole 13. The cooling fan 82 accelerates the discharge of heat inside the cable box 1 through the heat dissipation hole 13 to achieve convection heat dissipation; The moisture-proof mode is triggered by the gravity of natural rainwater without the need for additional sensors or power control. On sunny days, the cooling fan 82 is aligned with the heat dissipation holes 13 to maximize heat dissipation efficiency; on rainy days, the baffle 41 closes the heat dissipation holes 13 and cooperates with the defogger 44, heating tube 6, and internal circulation fan to form a four-level moisture-proof barrier.

[0037] This specific embodiment is merely an explanation of the present application and is not a limitation of the present application. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed, but as long as they are within the scope of protection required by this application, they are protected by patent law.

Claims

1. A cable branch box with a moisture-proof and heat-dissipating structure, comprising a cable box (1) and a cable fixing seat (15) fixed to the inner wall of the cable box (1), wherein a heat dissipation hole (13) is opened on the side wall of the cable box (1), characterized in that: The cable box (1) further comprises a water storage tank (2) for collecting rainwater and a moisture-proof mechanism (4), wherein the water storage tank (2) is located on the top of the cable box (1), and the moisture-proof mechanism (4) comprises a baffle (41) located between the cable fixing seat (15) and the heat dissipation hole (13), wherein the baffle (41) is aligned with the heat dissipation hole (13) on one side of the side wall of the cable box (1), and a transmission member (42) is provided between the baffle (41) and the water storage tank (2) to connect the two, and the transmission member (42) slides At the top of the cable box (1), an elastic member (43) is provided between the baffle (41) and the inner wall of the top of the cable box (1) to connect the two. A demister (44) higher than the heat dissipation hole (13) is provided on the side of the baffle (41) facing the heat dissipation hole (13). A heating tube (6) is provided on the inner wall of the top of the cable box (1). The heating tube (6) is located between the cable fixing seat (15) and the side wall of the cable box (1), and the heating tube (6) and the baffle (41) are arranged in a staggered manner.

2. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 1, characterized in that: A support rod (5) extending toward the heating tube (6) is fixed on the bottom of the cable box (1), and the end of the support rod (5) is rotatably connected to a transmission gear (51). A first rack (412) meshing with the transmission gear (51) is provided on the side of the baffle (41) facing away from the heat dissipation hole (13); a transmission plate (8) is provided on the side of the heating tube (6) facing the cable fixing seat (15), and a second rack (81) meshing with the transmission gear (51) is provided on the side of the transmission plate (8) facing the heating tube (6), and a heat dissipation fan (82) is provided on the transmission plate (8).

3. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 2, characterized in that: A plurality of the heat dissipation fans (82) are provided, and the heat dissipation fans (82) are distributed on the transmission plate (8) in a rectangular array.

4. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 2, characterized in that: The moisture-proof mechanism (4), transmission gear (51) and transmission plate (8) are provided in two groups and are respectively located on both sides of the cable box (1).

5. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 1, characterized in that: A vertical guide rail (9) is fixed on the inner wall of the cable box (1), and the side walls of the baffle (41) and the transmission plate (8) are respectively embedded and slid in the guide rail (9).

6. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 1, characterized in that: A drainage groove (17) is provided at the bottom of the side wall of the cable box (1), and a water storage seat (45) is provided at the bottom of the baffle (41) on the side facing the heat dissipation hole (13). The height of the water storage seat (45) in the vertical direction gradually decreases from the baffle (41) toward the heat dissipation hole (13). A return spring (46) connecting the water storage seat (45) and the baffle (41) is provided between the two sides, and a guide groove (451) is provided at the bottom of the other side of the water storage seat (45), and the water storage seat (45) slides into the drainage groove (17) on the side facing the heat dissipation hole (13).

7. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 1, characterized in that: The elastic member (43) is a spring, the transmission member (42) is rod-shaped, and the inner wall of the elastic member (43) abuts against the outer wall of the transmission member (42).

8. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 1, characterized in that: A micro switch (7) electrically connected to the heating tube (6) is provided on the inner wall of the cable box (1), and a trigger member (411) abutting against the micro switch (7) is provided on the side of the upper end of the baffle (41) facing the heating tube (6).

9. The cable branch box with a moisture-proof and heat-dissipating structure according to claim 1, characterized in that: Inclined rain shields (24) are provided on the four outer walls of the water storage tank (2).

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