An outdoor optical cable distribution box with waterproof and high-temperature alarm functions

Abstract

The present invention discloses an outdoor optical cable distribution box with waterproof and high-temperature alarm functions, which includes a box body. A detachable protective shell is installed outside the box body, and a vertically movable mounting rack is installed inside the box body. By providing two groups of heat dissipation holes, part of the heat inside the box body is dissipated outward through the first heat dissipation hole, and the heat is transferred to the rainwater inside the water storage cavity. Another part is discharged outward through the second heat dissipation hole. The third heat dissipation hole is conducive to the rapid dissipation of heat, enabling the temperature inside the box body to be quickly reduced and preventing the accumulation of heat inside. In rainy and snowy weather, the protective shell can prevent rain and snow from entering the inside of the box body through the first heat dissipation hole, and the baffle can prevent rain and snow from entering the inside of the box body through the second heat dissipation hole, having a good waterproof effect. While ensuring heat dissipation, it can also protect the instruments inside the box body from being damaged.

Description

Technical Field

[0001] The present invention relates to an optical cable distribution box, in particular to an outdoor optical cable distribution box with waterproof and high-temperature alarm functions, belonging to the field of optical cable distribution boxes. Background Art

[0002] Optical cable distribution boxes are commonly used devices in the communication industry. The figures of optical cable distribution boxes can often be seen on the roadside outdoors or outside buildings, which are used to ensure the normal progress of communication.

[0003] However, there are still certain deficiencies in the existing optical cable distribution boxes during use. The existing optical cable distribution boxes have low waterproof performance. In rainy and snowy weather, external rainwater easily enters the interior of the box body, and the internal communication devices are prone to damage. And when the temperature generated by the internal communication devices during operation is too high, an alarm cannot be issued in time, and the staff cannot discover it in time, which is likely to cause damage to the internal devices. In case of a fire, there is no self-extinguishing function. In the case where the staff fails to extinguish the fire in time, the internal devices will be quickly burned. Summary of the Invention

[0004] The purpose of the present invention is to provide an outdoor optical cable distribution box with waterproof and high-temperature alarm functions, which can solve the technical problems that the existing optical cable distribution boxes have low waterproof performance, and in rainy and snowy weather, external rainwater easily enters the interior of the box body, and the internal communication devices are prone to damage. And when the temperature generated by the internal communication devices during operation is too high, an alarm cannot be issued in time, and the staff cannot discover it in time, which is likely to cause damage to the internal devices. In case of a fire, there is no self-extinguishing function. In the case where the staff fails to extinguish the fire in time, the internal devices will be quickly burned.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] An outdoor optical cable distribution box with waterproof and high-temperature alarm functions, including a box body, a detachable protective shell is installed outside the box body, and a vertically movable mounting rack is installed inside the box body.

[0007] The protective shell is arranged in a "concave" shape, the protective shell seals the two sides and the rear side of the box body, and a plurality of partition plates are connected along the width direction from top to bottom inside both sides of the protective shell. A water storage cavity is formed between adjacent two partition plates, and an overflow port and a water receiving hopper are arranged above each water storage cavity on the side surface of the protective shell. The bottom end of the water receiving hopper is in through connection with the interior of the water storage cavity, and the overflow port is arranged below the water receiving hopper.

[0008] A plurality of clamping blocks are welded from top to bottom on both inner side walls of the protective shell, a plurality of clamping grooves adapted to the clamping blocks are arranged on both sides of the box body, the clamping blocks are clamped inside the clamping grooves, and a plurality of first heat dissipation holes are arranged on both sides of the box body.

[0009] Preferably, a door panel is rotatably installed on the front side of the box body, a temperature sensor is installed on the inner side of the door panel, and the temperature sensor is electrically connected to an acoustic-optic alarm lamp on the outer side of the door panel.

[0010] Preferably, a cross plate is connected above the mounting frame, two groups of brackets are connected to one side of the cross plate, and a fire extinguisher cylinder is clamped between the two groups of brackets. An electromagnetic valve is installed on the pipeline at the discharging end of the fire extinguisher cylinder.

[0011] Preferably, a back plate is welded to one side of the mounting frame away from the door panel. Two vertical sliders are connected to both ends of the side of the back plate away from the door panel. Two vertical chutes adapted to the sliders are arranged on both ends of the inner wall of the back side of the box body. The sliders are slidably installed inside the chutes.

[0012] Preferably, an air inflation bag is installed at the bottom of the mounting frame, and an air pump is installed on one side inside the mounting frame. The exhaust end of the air pump is connected to the intake end of the air inflation bag.

[0013] Preferably, an installation opening is formed at the top end of the box body, and a top plate is connected to the top of the box body through the installation opening. Vertical plates are vertically connected to the peripheries below the top plate. The four vertical plates form a square tube. Second heat dissipation holes are formed in the middle of the vertical plates. An arc-shaped baffle is connected to the side of the vertical plate above the second heat dissipation holes. Third heat dissipation holes are formed at the peripheries of the four edges of the top plate. The square tube is fixedly installed inside the installation opening, and the size of the square tube is adapted to the internal size of the installation opening. Drainage grooves are arranged on both sides of the top of the box body. The second heat dissipation holes are above the drainage grooves.

[0014] Preferably, the specific steps of using the optical cable cross-connecting box include:

[0015] Step 1: Clamp the protective shell on the outside of the box body, and the clamping block inside the protective shell is clamped and installed with the card slot outside the box body; during use, external rainwater enters the inside of the water storage cavity through the water receiving hopper, and the excess rainwater inside the water storage cavity is discharged out through the overflow port; the rainwater inside the water storage cavity absorbs the heat radiated out from the inside of the box body, thereby cooling the box body.

[0016] Step 2: During use, part of the heat inside the box body is dissipated out through the first heat dissipation holes, and the heat is transferred to the rainwater inside the water storage cavity; the other part is discharged out through the second heat dissipation holes; in rainy and snowy weather, the protective shell prevents rain and snow from entering the inside of the box body through the first heat dissipation holes, and the baffle prevents rain and snow from entering the inside of the box body through the second heat dissipation holes, having a waterproof function.

[0017] Step 3: The air bag at the bottom of the mounting frame supports and buffers the mounting frame at the bottom; if the bottom of the box body is soaked in water, the air bag has buoyancy and floats on the water surface, thereby driving the mounting frame to move upward inside the box body; when the mounting frame moves inside the box body, the slider on the back side moves along the chute, and the moving direction of the mounting frame does not change. After the height of the mounting frame increases, the bottom does not contact the water, and the instruments on the mounting frame are safe.

[0018] Step 4: During the use of the instruments inside the box body, the temperature sensor measures the temperature inside the box body. If it is detected that the temperature inside the box body is higher than the set alarm temperature, the sound and light alarm lamp emits an alarm signal to remind the staff to cool down; if it is detected that the temperature inside the box body is higher than the set ignition temperature, the solenoid valve opens, and the fire extinguishing material inside the fire extinguisher cylinder is ejected to spray the instruments inside the box body.

[0019] Advantages of the present invention:

[0020] 1. By installing a protective shell outside the box body, the protective shell is clamped outside the box body during work. The clamping blocks inside the protective shell are clamped and installed with the card slots outside the box body, so that the protective shell can be stably installed outside the box body and is not easy to fall off during use. During use, the external rainwater can enter the inside of the water storage cavity through the water receiving funnel, and the excess rainwater inside the water storage cavity can be discharged outward through the overflow port. It can not only store the rainwater but also ensure that the excess rainwater can be discharged in time. The rainwater inside the water storage cavity can absorb the heat radiated outward from the inside of the box body, which is beneficial to the cooling of the box body. The temperature inside the box body will not be too high during use, and the internal components are safer. The protective shell can also protect the box body from the outside, and the box body is not easy to be damaged after being bumped.

[0021] 2. By setting two groups of heat dissipation holes, part of the heat inside the box body is dissipated outward through the first heat dissipation hole, and the heat is transferred to the rainwater inside the water storage cavity. The other part is discharged outward through the second heat dissipation hole. The third heat dissipation hole is beneficial to the rapid dissipation of heat, so that the temperature inside the box body can be rapidly reduced and the internal heat will not accumulate. In rainy and snowy weather, the protective shell can prevent rain and snow from entering the inside of the box body through the first heat dissipation hole, and the baffle can prevent rain and snow from entering the inside of the box body through the second heat dissipation hole, which has a good waterproof effect. While ensuring heat dissipation, it can also protect the instruments inside the box body from being damaged.

[0022] 3. By installing a vertically movable mounting rack inside the box body, the air bag at the bottom of the mounting rack can support and buffer the mounting rack at the bottom, making the instruments on the mounting rack safer, less likely to shake violently after being hit, and having better stability. If the bottom of the box body is soaked in water, the air bag has buoyancy and can float on the water surface, thereby driving the mounting rack to move upward inside the box body. When the mounting rack moves inside the box body, the slider on the back side moves along the chute, making the movement of the mounting rack more stable and the moving direction unchanged.

[0023] 4. By setting a temperature sensor, when it is detected during operation that the temperature inside the box body is higher than the set alarm temperature, the control system controls the sound and light alarm lamp to emit an alarm signal to remind the staff to cool down in time. If it is detected that the temperature inside the box body is higher than the set fire temperature, the control system sends a signal to the plc controller, and then the plc controller controls the solenoid valve to open, and the fire extinguishing material inside the fire extinguisher cylinder is ejected to spray the instruments inside the box body, playing a role in fire prevention and extinguishing. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the internal structure of the box body of the present invention.

[0027] Figure 3 It is a schematic diagram of the structure of the protective shell of the present invention.

[0028] Figure 4 For the present invention Figure 2 Schematic exploded perspective view of the three-dimensional structure.

[0029] Figure 5 It is a schematic diagram of the installation structure of the fire extinguisher cylinder of the present invention.

[0030] Figure 6 It is a schematic diagram of the structure of the mounting rack of the present invention.

[0031] Figure 7 It is a schematic diagram of the installation structure of the back panel and the box body of the present invention.

[0032] Figure 8 It is a schematic diagram of the internal structure of the protective shell of the present invention.

[0033] In the figure: 1. Box body; 2. Door panel; 3. Protective shell; 4. Water receiving hopper; 5. Overflow port; 6. Top plate; 7. Temperature sensor; 8. Mounting rack; 9. Card slot; 10. First heat dissipation hole; 11. Card block; 12. Vertical plate; 13. Second heat dissipation hole; 14. Baffle plate; 15. Drainage groove; 16. Installation opening; 17. Bracket; 18. Fire extinguisher cylinder; 19. Solenoid valve; 20. Horizontal plate; 21. Back plate; 22. Air pump; 23. Inflatable bag; 24. Slide block; 25. Slide groove; 26. Water storage cavity; 27. Partition board. Detailed implementation manner

[0034] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0035] Please refer to Figure 1-8 As shown in the figure, an outdoor optical cable cross-connect box with waterproof and high-temperature alarm functions includes a box body 1. A detachable protective shell 3 is installed outside the box body 1, and a vertically movable mounting rack 8 is installed inside the box body 1.

[0036] The protective shell 3 is arranged in a "concave" shape. The protective shell 3 seals the two sides and the rear side of the box body 1. A plurality of partition boards 27 are connected along the width direction from top to bottom inside both sides of the protective shell 3. A water storage cavity 26 is formed between two adjacent partition boards 27. And an overflow port 5 and a water receiving hopper 4 are arranged above each water storage cavity 26 on the side surface of the protective shell 3. The bottom end of the water receiving hopper 4 is in through connection with the inside of the water storage cavity 26, and the overflow port 5 is arranged below the water receiving hopper 4.

[0037] A plurality of card blocks 11 are welded from top to bottom on both inner side walls of the protective shell 3. A plurality of card slots 9 adapted to the card blocks 11 are arranged on both sides of the box body 1. The card blocks 11 are clamped inside the card slots 9, and a plurality of first heat dissipation holes 10 are arranged on both sides of the box body 1.

[0038] As a technical optimization scheme of the present invention, a door panel 2 is rotatably installed on the front side of the box body 1. A temperature sensor 7 is installed on the inner side of the door panel 2, and the temperature sensor 7 is electrically connected to the sound and light alarm lamp on the outer side of the door panel 2. The temperature sensor 7 measures the temperature inside the box body 1 and transmits the measured temperature data to the control system. If it is detected that the temperature inside the box body 1 is higher than the set alarm temperature, the control system controls the sound and light alarm lamp to emit an alarm signal to remind the staff to cool down in time.

[0039] As a technical optimization solution of the present invention, a cross plate 20 is connected above the mounting frame 8. Two groups of brackets 17 are connected to one side of the cross plate 20, and a fire extinguisher cylinder 18 is clamped between the two groups of brackets 17. An electromagnetic valve 19 is installed on the pipeline at the discharging end of the fire extinguisher cylinder 18. The opening of the electromagnetic valve 19 enables the fire extinguishing material inside the fire extinguisher cylinder 18 to be sprayed outwards.

[0040] As a technical optimization solution of the present invention, a back plate 21 is welded to the side of the mounting frame 8 away from the door panel 2. Two ends of the side of the back plate 21 away from the door panel 2 are vertically connected with sliders 24. Two ends of the inner wall of the back side of the box body 1 are vertically provided with chutes 25 adapted to the sliders 24. The sliders 24 are slidably installed inside the chutes 25. When the mounting frame 8 moves inside the box body 1, the sliders 24 on the back side move along the chutes 25, making the movement of the mounting frame 8 more stable and the moving direction unchanged.

[0041] As a technical optimization solution of the present invention, an air-filled bag 23 is installed at the bottom of the mounting frame 8, and an air pump 22 is installed on one side inside the mounting frame 8. The exhaust end of the air pump 22 is connected to the intake end of the air-filled bag 23. When the amount of gas inside the air-filled bag 23 is too small, it can be filled in through the air pump 22 to ensure the normal use of the air-filled bag 23.

[0042] As a technical optimization solution of the present invention, an installation opening 16 is opened at the top end of the box body 1, and a top plate 6 is connected to the top of the box body 1 through the installation opening 16. Four vertical plates 12 are vertically connected to the periphery below the top plate 6. The four vertical plates 12 form a square tube. A second heat dissipation hole 13 is opened in the middle of the vertical plate 12. An arc-shaped baffle plate 14 is connected to the side of the vertical plate 12 above the second heat dissipation hole 13. Third heat dissipation holes are opened at the four edges of the top plate 6. The square tube is fixedly installed inside the installation opening 16, and the size of the square tube is adapted to the internal size of the installation opening 16. Drainage grooves 15 are provided on both sides of the top of the box body 1. The second heat dissipation hole 13 is above the drainage groove 15. The second heat dissipation hole 13 and the third heat dissipation holes are conducive to the dissipation of heat inside the box body 1, and the drainage groove 15 can drain the accumulated water above outwards.

[0043] As a technical optimization solution of the present invention, the specific steps of using the optical cable cross-connecting box include:

[0044] Step 1: Clamp the protective shell 3 outside the box body 1, and the clamping block 11 inside the protective shell 3 is clamped and installed with the card slot 9 outside the box body 1; during use, the external rainwater enters the inside of the water storage cavity 26 through the water receiving hopper 4, and the excess rainwater inside the water storage cavity 26 is discharged outwards from the overflow port 5; the rainwater inside the water storage cavity 26 absorbs the heat dissipated from the inside of the box body 1, thereby cooling the box body 1.

[0045] Step 2: Part of the heat inside the middle box body 1 is dissipated outward from the first heat dissipation hole 10, and the heat is transferred to the rainwater inside the water storage cavity 26; another part is discharged outward from the second heat dissipation hole 13; in rainy and snowy weather, the protective shell 3 prevents rain and snow from entering the inside of the box body 1 from the first heat dissipation hole 10, and the baffle 14 prevents rain and snow from entering the inside of the box body 1 from the second heat dissipation hole 13, having a waterproof function;

[0046] Step 3: The air bag 23 at the bottom of the mounting frame 8 supports and buffers the mounting frame 8 at the bottom; if the bottom of the box body 1 is soaked in water, the air bag 23 has buoyancy and floats on the water surface, thereby driving the mounting frame 8 to move upward inside the box body 1; when the mounting frame 8 moves inside the box body 1, the slider 24 on the back side moves along the chute 25, and the moving direction of the mounting frame 8 does not change. After the height of the mounting frame 8 increases, the bottom does not contact the water, and the instruments on the mounting frame 8 are safe;

[0047] Step 4: During the use of the instruments inside the box body 1, the temperature sensor 7 measures the temperature inside the box body 1. If it is detected that the temperature inside the box body 1 is higher than the set alarm temperature, the sound and light alarm lamp emits an alarm signal to remind the staff to cool down; if it is detected that the temperature inside the box body 1 is higher than the set ignition temperature, the solenoid valve 19 opens, and the fire extinguishing material inside the fire extinguisher cylinder 18 is sprayed to spray the instruments inside the box body 1.

[0048] When the present invention is in use, some instruments for optical cable cross-connection are installed on the mounting frame 8 for normal optical cable cross-connection use. And the box body 1 is fixed at the position to be used to prevent the box body 1 from shaking and toppling during use. Finally, the protective shell 3 is snap-fitted outside the box body 1, and the clamping block 11 inside the protective shell 3 is snap-fitted with the card slot 9 outside the box body 1, so that the protective shell 3 can be stably installed outside the box body 1 and is not easy to fall off during use. During use, the external rainwater can enter the inside of the water storage cavity 26 through the water receiving hopper 4, and the excess rainwater inside the water storage cavity 26 can be discharged outward from the overflow port 5. It can not only store the rainwater, but also ensure that the excess rainwater can be discharged outward in time. The rainwater inside the water storage cavity 26 can absorb the heat dissipated outward from the inside of the box body 1, which is beneficial to the cooling of the box body 1. The temperature inside the box body 1 will not be too high during use, and the internal components are safer.

[0049] During use, part of the heat inside the middle box body 1 is dissipated outward from the first heat dissipation hole 10, and the heat is transferred to the rainwater inside the water storage cavity 26. Another part is discharged outward from the second heat dissipation hole 13. The third heat dissipation hole is conducive to the rapid dissipation of heat, enabling the temperature inside the box body 1 to drop rapidly and preventing the heat inside from accumulating. In rainy and snowy weather, the protective shell 3 can prevent rain and snow from entering the inside of the box body 1 through the first heat dissipation hole 10, and the baffle plate 14 can prevent rain and snow from entering the inside of the box body 1 through the second heat dissipation hole 13, having a good waterproof effect. While ensuring heat dissipation, it can also protect the instruments inside the box body 1 from being damaged. The protective shell 3 can also protect the box body 1 from the outside. After the box body 1 is knocked, it is not easily damaged.

[0050] The air-filled bag 23 at the bottom of the mounting rack 8 can support and buffer the mounting rack 8 at the bottom, making the instruments on the mounting rack 8 safer. After being impacted, it is not prone to excessive shaking and has better stability. When the amount of gas inside the air-filled bag 23 is too small, it can be filled with gas inward through the air pump 22 to ensure the normal use of the air-filled bag 23. If the bottom of the box body 1 is soaked in water, the air-filled bag 23 has buoyancy and can float on the water surface, thereby driving the mounting rack 8 to move upward inside the box body 1. When the mounting rack 8 moves inside the box body 1, the slider 24 on the back side moves along the sliding groove 25, making the movement of the mounting rack 8 more stable and the moving direction unchanged.

[0051] Before use, the temperature sensor 7 is communicatively connected to an external control system. The solenoid valve 19 is electrically connected to the plc controller on the mounting rack 8, and the plc controller is electrically connected to the external control system. During the use of the instruments inside the box body 1, the temperature sensor 7 measures the temperature inside the box body 1 and transmits the measured temperature data to the control system. If it is detected that the temperature inside the box body 1 is higher than the set alarm temperature, the control system controls the sound and light alarm lamp to emit an alarm signal to remind the staff to cool down in time. If it is detected that the temperature inside the box body 1 is higher than the set ignition temperature, the control system sends a signal to the plc controller, which in turn causes the plc controller to control the solenoid valve 19 to open, and the fire extinguishing material inside the fire extinguisher cylinder 18 is ejected to spray the instruments inside the box body 1, playing a role in fire prevention and extinguishing. The fire extinguisher cylinder 18 uses a dry powder fire extinguisher.

[0052] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and changes can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. An outdoor optical cable distribution box with waterproof and high-temperature alarm functions, including a box body (1), characterized in that, A detachable protective shell (3) is installed outside the box body (1), and a vertically movable mounting rack (8) is installed inside the box body (1); The protective shell (3) is arranged in a "concave" shape, the protective shell (3) seals both sides and the rear side of the box body (1), and a plurality of partition plates (27) are connected along the width direction from top to bottom inside both sides of the protective shell (3). A water storage cavity (26) is formed between two adjacent partition plates (27), and an overflow port (5) and a water receiving hopper (4) are arranged above each water storage cavity (26) on the side surface of the protective shell (3). The bottom end of the water receiving hopper (4) is in through connection with the inside of the water storage cavity (26), and the overflow port (5) is arranged below the water receiving hopper (4); A plurality of clamping blocks (11) are welded from top to bottom on both inner side walls of the protective shell (3), a plurality of clamping grooves (9) adapted to the clamping blocks (11) are arranged on both sides of the box body (1), the clamping blocks (11) are clamped inside the clamping grooves (9), and a plurality of first heat dissipation holes (10) are arranged on both sides of the box body (1); A back plate (21) is welded on one side of the mounting rack (8) away from the door panel (2), and two ends of the side of the back plate (21) away from the door panel (2) are vertically connected with sliding blocks (24). Two ends of the inner wall of the back side of the box body (1) are vertically provided with sliding grooves (25) adapted to the sliding blocks (24), and the sliding blocks (24) are slidably installed inside the sliding grooves (25); An air inflation bag (23) is installed at the bottom of the mounting rack (8), and an air pump (22) is installed on one side inside the mounting rack (8). The exhaust end of the air pump (22) is connected to the intake end of the air inflation bag (23); An installation opening (16) is opened at the top end of the box body (1), and a top plate (6) is connected to the top of the box body (1) through the installation opening (16). Vertical plates (12) are vertically connected around the lower part of the top plate (6). The four vertical plates (12) form a square tube. A second heat dissipation hole (13) is opened in the middle of the vertical plate (12). An arc-shaped shielding plate (14) is connected above the second heat dissipation hole (13) on the side surface of the vertical plate (12). Third heat dissipation holes are opened at the four edges of the top plate (6). The square tube is fixedly installed inside the installation opening (16), and the size of the square tube is adapted to the size inside the installation opening (16). Drainage grooves (15) are arranged on both sides of the top of the box body (1), and the second heat dissipation hole (13) is above the drainage groove (15).

2. The outdoor optical cable distribution box with waterproof and high-temperature alarm functions according to claim 1, characterized in that, A door panel (2) is rotatably installed on the front side of the box body (1), a temperature sensor (7) is installed on the inner side of the door panel (2), and the temperature sensor (7) is electrically connected to a sound and light alarm lamp on the outer side of the door panel (2).

3. The outdoor optical cable distribution box with waterproof and high-temperature alarm functions according to claim 2, characterized in that, A cross plate (20) is connected above the mounting rack (8), two groups of brackets (17) are connected to one side of the cross plate (20), and a fire extinguisher cylinder (18) is clamped between the two groups of brackets (17). An electromagnetic valve (19) is installed on the pipeline at the discharging end of the fire extinguisher cylinder (18).

4. The outdoor optical cable distribution box with waterproof and high-temperature alarm functions according to claim 3, characterized in that, The specific steps of using this optical cable cross-connect box include: Step 1: Snap the protective shell (3) onto the outside of the box body (1). The clamping block (11) inside the protective shell (3) is snap-fitted with the clamping groove (9) outside the box body (1). During use, rainwater from the outside enters the inside of the water storage cavity (26) through the water receiving hopper (4), and the excess rainwater inside the water storage cavity (26) is discharged outward from the overflow port (5). The rainwater inside the water storage cavity (26) absorbs the heat dissipated outward from the inside of the box body (1), thereby cooling the box body (1). Step 2: During use, part of the heat inside the box body (1) is dissipated outward through the first heat dissipation holes (10), and the heat is transferred to the rainwater inside the water storage cavity (26). The other part is discharged outward through the second heat dissipation holes (13). In rainy and snowy weather, the protective shell (3) prevents rain and snow from entering the inside of the box body (1) through the first heat dissipation holes (10), and the baffle plate (14) prevents rain and snow from entering the inside of the box body (1) through the second heat dissipation holes (13), having a waterproof function. Step 3: The air-filled bag (23) at the bottom of the mounting bracket (8) supports and buffers the mounting bracket (8) at the bottom. If the bottom of the box body (1) is soaked in water, the air-filled bag (23) has buoyancy and floats on the water surface, thereby driving the mounting bracket (8) to move upward inside the box body (1). When the mounting bracket (8) moves inside the box body (1), the slider (24) on the back side moves along the sliding groove (25), and the moving direction of the mounting bracket (8) does not change. After the height of the mounting bracket (8) increases, the bottom does not contact the water, and the instruments on the mounting bracket (8) are safe. Step 4: During the use of the instruments inside the box body (1), the temperature sensor (7) measures the temperature inside the box body (1). If it is detected that the temperature inside the box body (1) is higher than the set alarm temperature, the sound and light alarm lamp emits an alarm signal to remind the staff to cool down. If it is detected that the temperature inside the box body (1) is higher than the set ignition temperature, the solenoid valve (19) opens, and the fire extinguishing material inside the fire extinguisher cylinder (18) is sprayed to spray the instruments inside the box body (1).

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