Rail transit high-reliability vehicle-mounted video storage device and vehicle-mounted video device

Abstract

The utility model discloses a rail transit high-reliability vehicle-mounted video storage device and a rail transit high-reliability vehicle-mounted video device, and relates to the technical field of vehicle-mounted video devices, the rail transit high-reliability vehicle-mounted video storage device and the rail transit high-reliability vehicle-mounted video device comprise a storage device and a plurality of interception assemblies, the storage device comprises an electronic component and a shell, an inner cavity is formed in the shell, the electronic element is installed in the inner cavity, the shell is provided with a plurality of side walls, the side walls comprise a plurality of first side walls, heat dissipation holes communicating the interior and the exterior of the inner cavity are formed in the first side walls, and the multiple interception assemblies are arranged on the shell. And each interception assembly is arranged corresponding to the heat dissipation hole of the first side wall and comprises a plurality of sponge plates for spacing equipment in the first direction. And water vapor is gradually absorbed by the sponge plate when the air passes through the sponge plate, so that the dry air enters the storage equipment through the heat dissipation holes for heat dissipation.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle-mounted video devices, and particularly relates to a vehicle-mounted video storage device and a vehicle-mounted video device with high reliability for rail transit. Background Art

[0002] In the transportation industry, especially in the rail transit industry, vehicle-mounted video devices (i.e., vehicle-mounted video recorders) are often configured on vehicles to record video of the inside and outside of the vehicle during driving, so as to achieve the purpose of evidence collection after abnormal events such as accidents, disputes, and violations. In the rail transit industry, industry standards require that video be saved for a certain period of time. For vehicle-mounted video recorders with such requirements, large-capacity video storage devices are used to meet the requirements for the storage time of video data.

[0003] The storage device needs to work continuously with the vehicle-mounted video device for a long time. The storage device needs to be ventilated and cooled in time during long-term operation. Usually, corresponding holes are opened on the storage device to achieve the purpose of ventilation and heat dissipation. However, when the rail transit is running in high-humidity areas, a large amount of water vapor will enter the interior of the storage device through these holes, causing short circuits or corrosion of electronic components, resulting in damage to the storage device and inability to work properly. Summary of the Utility Model

[0004] The main purpose of the utility model is to propose a vehicle-mounted video storage device and a vehicle-mounted video device with high reliability for rail transit, aiming to prevent water vapor from entering the storage device and damaging electronic components, so as to ensure the normal operation of the storage device.

[0005] To achieve the above purpose, the vehicle-mounted video storage device and the vehicle-mounted video device with high reliability for rail transit proposed by the utility model include:

[0006] A storage device, the storage device includes electronic components and a housing, the housing forms an inner cavity, the electronic components are installed in the inner cavity, the housing has a plurality of side walls, and the plurality of side walls include a plurality of first side walls, and the first side walls are provided with heat dissipation holes communicating the inside and outside of the inner cavity:

[0007] A plurality of intercepting components, the plurality of intercepting components are arranged on the housing, and each intercepting component is arranged corresponding to the heat dissipation hole of one of the first side walls, and the intercepting component includes a plurality of sponge plates spaced apart along a first direction.

[0008] Preferably, each sponge plate is provided with a plurality of ventilation holes, and for every two adjacent sponge plates, the ventilation holes on one of the sponge plates are projected onto the other sponge plate and are located outside the ventilation holes of the other sponge plate.

[0009] Preferably, the intercepting component further includes:

[0010] A connection box is provided on the first side wall. An accommodation cavity is formed in the connection box, and a plurality of the sponge plates are movably arranged in the accommodation cavity. Openings are provided on both the side of the accommodation cavity facing the heat dissipation holes and the side away from the heat dissipation holes, and the openings are communicated with the heat dissipation holes to allow air to flow into the heat dissipation holes;

[0011] A plurality of support rods are detachably arranged on the first side wall, and all of the plurality of support rods are located in the accommodation cavity. A plurality of the sponge plates are sleeved on the outer sides of the support rods so as to adjust the placement positions of the sponge plates when the sponge plates move along the length extension direction of the support rods;

[0012] A plurality of limiting plates are respectively arranged at one ends of the plurality of support rods away from the first side wall to limit the sponge plates from separating from the support rods when the sponge plates move away from the first side wall.

[0013] Preferably, fixing grooves for inserting the support rods are provided on the first side wall to limit the installation positions of the support rods.

[0014] Preferably, limiting blocks inserted into the connection box are provided on the limiting plates, an elastic member extending towards the limiting blocks is arranged in the connection box, a positioning block is arranged on one side of the elastic member facing the limiting blocks, and positioning grooves for inserting the positioning blocks are formed in the limiting blocks to limit the limiting plates from moving away from the connection box.

[0015] Preferably, the outer peripheral sides of the sponge plates are attached to the inner peripheral walls of the accommodation cavity to limit air from directly passing through the heat dissipation holes when the sponge plates are placed in the accommodation cavity.

[0016] Preferably, a drying assembly is provided on the side wall, and the drying assembly is used for absorbing water vapor in the inner cavity.

[0017] Preferably, the drying assembly includes:

[0018] A closing plate, a plurality of connecting rods are arranged on one side of the closing plate facing the side wall, and the closing plate is attached to the side wall. The closing plate moves closer to or away from the side wall to drive the connecting rods to enter or exit the inner cavity;

[0019] A storage box is arranged at one ends of the plurality of connecting rods away from the closing plate. A desiccant is placed in the storage box, and the desiccant is used for absorbing water vapor in the inner cavity so as to drive the desiccant to enter or exit the inner cavity when the storage box moves closer to or away from the inner cavity along with the connecting rods.

[0020] Preferably, through holes for the connecting rod to penetrate are formed in the side wall, and the connecting rod is slidably connected in the through holes. The storage box penetrates through the through holes so that the storage box can enter or exit the inner cavity.

[0021] In addition, to achieve the above object, the present invention also provides a vehicle-mounted video, including the vehicle-mounted video storage device with high reliability for rail transit described above.

[0022] In the technical solution provided by the present invention, a plurality of the intercepting components are arranged on the outer shell, and each intercepting component is arranged corresponding to the heat dissipation holes of the first side wall. The intercepting component includes a plurality of sponge plates arranged at intervals along the first direction. By arranging a plurality of sponge plates at intervals outside the heat dissipation holes, air can flow through the plurality of sponge plates into the heat dissipation holes, and the water vapor in the air is gradually absorbed by the sponge plates during the process of passing through the sponge plates, so that dry air enters the storage device through the heat dissipation holes for heat dissipation work. Description of the Drawings

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts.

[0024] Figure 1 It is a three-dimensional schematic diagram of an embodiment of the vehicle-mounted video storage device with high reliability for rail transit and the vehicle-mounted video device provided by the present invention;

[0025] Figure 2 For Figure 1 It is a cross-sectional schematic diagram of the vehicle-mounted video storage device with high reliability for rail transit and the vehicle-mounted video device in

[0026] Figure 3 For Figure 2 It is a structural schematic diagram of the intercepting component in

[0027] Figure 4 For Figure 3 It is an enlarged schematic diagram of the partial area A in

[0028] Figure 5 For Figure 2 It is a structural schematic diagram of the drying component in

[0029] Explanation of the reference numerals in the drawings:

[0030] 1. Intercepting component; 11. Sponge board; 12. Limiting plate; 13. Support rod; 14. Connecting box; 15. Limiting block; 16. Positioning block; 17. Elastic member; 2. Storage device; 3. Drying component; 31. Sealing plate; 32. Connecting rod; 33. Storage box; 34. Desiccant.

[0031] The realization, functional features and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions such as "first", "second", etc. involved in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0035] The present utility model provides an on-vehicle video storage device and an on-vehicle video device with high reliability for rail transit. Figures 1 to 5 This is an embodiment of the on-vehicle video storage device and the on-vehicle video device with high reliability for rail transit provided by the present utility model.

[0036] Please refer to Figures 1 to 5, the vehicle-mounted video storage device with high reliability for rail transit includes a storage device 2 and multiple intercepting components 1. The storage device 2 includes electronic components and a housing. The housing forms an inner cavity, and the electronic components are installed in the inner cavity. The housing has multiple side walls, and multiple side walls include multiple first side walls. The first side walls are provided with heat dissipation holes communicating the inside and outside of the inner cavity. Multiple intercepting components 1 are arranged on the housing, and each intercepting component 1 is arranged corresponding to the heat dissipation hole of one first side wall. The intercepting component 1 includes multiple sponge plates 11 spaced along a first direction.

[0037] During the operation of rail transit, continuous monitoring is required for some areas. Therefore, monitoring camera devices are set up for continuous monitoring work, and the videos captured during the monitoring process are uploaded to the storage device 2 for storage. The storage device 2 exchanges air with the outside through the heat dissipation holes to achieve the purpose of heat dissipation during the continuous video storage process. However, the air contains a certain amount of water vapor, especially in areas with high humidity, where the water vapor content is relatively high. It is very easy to accumulate on the electronic components after entering the storage device 2, causing short circuits or corrosion. Therefore, the intercepting component 1 is set up to intercept the water vapor in the air, so that the outside air entering the storage device 2 does not contain water vapor.

[0038] The sponge plate 11 can intercept water vapor and allow air to circulate at the same time. The sponge plate 11 has many connected holes, and air can pass through these holes through the sponge plate 11. At the same time, the water vapor carried by the air when passing through the sponge plate 11 will also be absorbed by the sponge plate 11. Each time the air circulates through the multiple sponge plates 11 spaced apart, the water vapor contained in the air will be absorbed, so that the air reaching the heat dissipation holes basically does not contain water vapor, thus avoiding the accumulation of water vapor in the storage device 2 on the electronic components, causing short circuits or corrosion.

[0039] Different storage devices 2 are provided with different numbers of heat dissipation holes, and the positions of the heat dissipation holes are also different. In order to ensure that the air flowing through each heat dissipation hole remains dry, therefore, one intercepting component 1 is adapted to each heat dissipation hole to ensure that the air entering the storage device 2 is difficult to carry water vapor.

[0040] Therefore, in the technical solution provided by the present utility model, multiple intercepting components 1 are arranged on the housing, and each intercepting component 1 is arranged corresponding to the heat dissipation hole of one first side wall. The intercepting component 1 includes multiple sponge plates 11 spaced along a first direction. The air can pass through the multiple sponge plates 11 and flow into the heat dissipation holes, and the water vapor in the air is gradually absorbed by the sponge plates 11 during the process of passing through the sponge plates 11, so that dry air enters the storage device 2 through the heat dissipation holes for heat dissipation work.

[0041] After the sponge plate 11 absorbs water vapor, the holes in the sponge plate 11 will be gradually blocked by it. Therefore, after the sponge plate 11 is used for a period of time, it will gradually absorb and become saturated. At this time, air cannot pass through the holes through the sponge plate 11, resulting in the inability of external air to enter the heat dissipation holes again, and the heat dissipation holes cannot ventilate and dissipate heat anymore.

[0042] Specifically, in the embodiment of the present invention, each of the sponge plates 11 is provided with a plurality of ventilation holes, and for every two adjacent sponge plates 11, the projection of the ventilation holes on one of the sponge plates 11 on the other sponge plate 11 is located outside the ventilation holes of the other sponge plate 11.

[0043] By providing ventilation holes in the sponge plate 11, air can pass through the ventilation holes more smoothly through the sponge plate 11. At the same time, in order to prevent air from directly flowing into the heat dissipation holes through the ventilation holes, the ventilation holes on different sponge plates 11 are arranged in a staggered manner, so that the ventilation holes on two adjacent sponge plates 11 are not aligned with each other, so that the air will hit another sponge plate 11 after passing through the ventilation holes. Furthermore, the other sponge plate 11 absorbs the water vapor in the air, so that the air basically enters the heat dissipation holes without carrying water vapor and enters the storage device 2 through the heat dissipation holes.

[0044] Each heat dissipation hole corresponds to a plurality of sponge plates 11, and the plurality of sponge plates 11 are arranged at intervals. In order to ensure that the plurality of sponge plates 11 arranged at intervals will not move away from the heat dissipation holes randomly, a structure for fixing the position of the sponge plates 11 needs to be designed.

[0045] Specifically, in the embodiment of the present invention, the interception assembly 1 further includes a connection box 14, a plurality of support rods 13 and a plurality of limiting plates 12. The connection box 14 is arranged on the first side wall. An accommodation cavity is formed in the connection box 14, and a plurality of the sponge plates 11 are movably arranged in the accommodation cavity. Openings are provided on both the side of the accommodation cavity facing the heat dissipation holes and the side away from the heat dissipation holes, and the openings are communicated with the heat dissipation holes to allow air to flow into the heat dissipation holes. A plurality of the support rods 13 are detachably arranged on the first side wall, and a plurality of the support rods 13 are all located in the accommodation cavity. A plurality of the sponge plates 11 are sleeved outside the support rods 13 to adjust the placement position of the sponge plates 11 when the sponge plates 11 move along the length extension direction of the support rods 13. A plurality of the limiting plates 12 are respectively arranged at one ends of the plurality of support rods 13 away from the first side wall to limit the sponge plates 11 from detaching from the support rods 13 when the sponge plates 11 move away from the first side wall.

[0046] A connection box 14 is provided on the first side wall corresponding to one of the heat dissipation holes, and the connection box 14 covers all the heat dissipation holes on the corresponding first side wall within the accommodation cavity. Then, when installing the sponge plate 11, the required number of sponge plates 11 are respectively sleeved on multiple support rods 13. For example, when the number of support rods 13 is four, the four support rods 13 respectively penetrate through the four corners of the sponge plate 11. After arranging the required number of sponge plates 11 at equal intervals on the support rods 13, the four support rods 13 are installed on the corresponding first side wall, and at the same time, the four support rods 13 and the sponge plates 11 on the four support rods 13 are all located within the connection box 14, thus completing the installation of the sponge plate 11.

[0047] Due to the connection box 14, air cannot enter the heat dissipation holes through the cavity between the sponge plate 11 closest to the outer shell and the outer shell. At the same time, the setting of the connection box 14 also limits the size and shape of the sponge plate 11, enabling the sponge plate 11 to be produced according to the size of the inner cavity of the connection box 14. When the sponge plate 11 is blown by relatively strong air, it will tilt towards the corresponding first side wall or away from the first side wall. At this time, there will be a large gap between the sponge plate 11 and the connection box 14, and air will carry water vapor and directly flow through these gaps to the heat dissipation holes. Therefore, by providing the support rods 13 to support the sponge plate 11, it is difficult for the sponge plate 11 to tilt and cause gaps when blown by the cleaning air. At the same time, a limiting plate 12 is provided at one end of the support rod 13 away from the corresponding first side wall, making it difficult for the sponge plate 11 to detach from the support rod 13 during vibration, ensuring that the sponge plate 11 can be used for a long time without supervision.

[0048] Furthermore, a fixing groove for inserting the support rod 13 is provided on the first side wall to limit the installation position of the support rod 13.

[0049] When the sponge plate 11 absorbs a large amount of moisture inside, it needs to be processed, and when the sponge plate 11 is damaged, it also needs to be replaced. Therefore, the sponge plate 11 needs to be able to be disassembled at any time. To disassemble the sponge plate 11, the support rod 13 or the limiting plate 12 needs to be removed. By opening a fixing groove on the corresponding first side wall and inserting the support rod 13 into the fixing groove, the fixing of the support rod 13 can be quickly completed. Similarly, when disassembling the support rod 13, the support rod 13 can be quickly disassembled by pulling it out of the fixing groove, completing the disassembly of the support rod 13. After the support rod 13 is disassembled, the sponge plate 11 can be taken down through the end inserted into the fixing groove, thus realizing the replacement and cleaning of the sponge plate 11.

[0050] After the support rod 13 is inserted into the fixing groove, it will cause certain wear to the fixing groove. After the fixing groove is worn to a certain extent, the support rod 13 cannot be stably inserted into the fixing groove. Therefore, a structure is required to limit the limit plate 12 so that the support rod 13 is difficult to escape from the fixing groove.

[0051] Specifically, in an embodiment of the utility model, the limit plate 12 is provided with a limit block 15 inserted into the connection box 14, and the connection box 14 is provided with an elastic member 17 extending toward the limit block 15, and the elastic member 17 is provided with a positioning block 16 on the side facing the limit block 15, and the limit block 15 is provided with a positioning groove for the positioning block 16 to be inserted, so as to limit the movement of the limit plate 12 in the direction away from the connection box 14.

[0052] When the support rod 13 is inserted into the fixed groove, the limit block 15 is inserted into the connector connection box 14. When the limit block 15 is inserted into the limit box, it will touch the positioning block 16. In order to make the positioning block 16 be pushed away by the limit block 15 after touching the limit block 15, the side of the positioning block 16 away from the elastic member 17 can be set to an arc shape. During the movement of the limit block 15, the positioning block 16 will be pushed along the arc surface of the positioning block 16, so that the positioning block 16 gradually compresses the elastic member 17 and moves until the limit block 15 completely enters the connection box 14. At this time, the positioning block 16 will be on the elastic member 1 7 moves toward the limit block 15 and is inserted into the limit block 15 under the push of the elastic potential energy of the limit block 15, so as to limit the limit block 15. After the limit block 15 is restricted, the limit plate 12 connected to the limit block 15 will also be restricted, thereby completing the restriction of the support rod 13, so that the support rod 13 cannot be easily separated from the fixed groove, wherein the positioning block 16 can be set to a pulling type, and a pull rod extending to the outside of the connection box 14 is set on the positioning block 16. When the limit block 15 needs to be moved, the positioning block 16 is pulled by the pull rod to contact the obstruction of the limit block 15 to complete the limiting work.

[0053] Air may also flow directly into the heat dissipation holes through the gap between the sponge board 11 and the wall of the accommodating cavity, so it is necessary to close or reduce the gap. Specifically, in an embodiment of the utility model, the outer peripheral side of the sponge board 11 is fitted with the inner peripheral wall of the accommodating cavity to limit the air from passing directly into the heat dissipation holes when the sponge board 11 is placed in the accommodating cavity.

[0054] The gap between the sponge board 11 and the accommodating cavity and the water vapor formed after the water absorbed by the sponge board 11 itself evaporates may flow directly into the storage device 2 through the heat dissipation holes. Therefore, it is necessary to set a moisture absorbing structure in the storage device 2. Specifically, in an embodiment of the utility model, a drying component 3 is provided on the side wall, and the drying component 3 is used to absorb the water vapor in the inner cavity.

[0055] The main function of the drying component 3 is to absorb a small amount of water vapor entering the storage device 2, so there are many mechanisms that can achieve this purpose. For example, the drying component 3 includes a closing plate 31 and a storage box 33. The closing plate 31 is provided with a plurality of connecting rods 32 on the side facing the side wall, and the closing plate 31 is in contact with the side wall. The closing plate 31 moves toward or away from the side wall to drive the connecting rods 32 to enter or leave the inner cavity. The storage box 33 is provided at one end of the plurality of connecting rods 32 away from the closing plate 31. A desiccant 34 is placed in the storage box 33. The desiccant 34 is used to absorb water vapor in the inner cavity so as to drive the desiccant 34 to enter or leave the inner cavity when the storage box 33 moves with the connecting rods 32 toward or away from the inner cavity.

[0056] The core function of the drying component 3 is to effectively absorb the trace amount of water vapor inside the storage device 2 to ensure the dryness of the internal environment of the device. When in use, the storage box 33 is placed at the other end of the multiple connecting rods 32, away from the closing plate 31. A certain amount of desiccant 34 is placed inside the storage box 33. The function of the desiccant 34 is to absorb the water vapor in the inner cavity, thereby keeping the inner cavity dry. When the storage box 33 approaches or moves away from the inner cavity with the opening and closing action of the connecting rod 32, the desiccant 34 will also enter or leave the inner cavity, so that the desiccant 34 When needed, it can absorb moisture in the inner cavity in time to ensure that the internal environment of the storage device 2 is dry and stable. When replacing, the desiccant 34 inside the storage device 2 is taken out and replaced with a new and effective desiccant 34. At the same time, in order to ensure that the storage box 33 will not be separated from the storage device 2 at will, the storage box 33 needs to be fixed. For example, a magnet is set on the side wall, and the closing plate 31 is magnetically attracted by the magnet. After the closing plate 31 is magnetically attracted, it cannot be separated from the storage device 2 by itself without a large external force, so that the storage box 33 connected to the connecting rod 32 cannot be moved away from the storage device 2.

[0057] In order to facilitate the user to judge the usage status of the desiccant 34, an observation window can be set on the closing plate 31, so that the user can intuitively see the color change of the desiccant 34. At the same time, in order to improve the utilization efficiency of the desiccant 34, it is possible to consider using a desiccant 34 with a stronger moisture absorption capacity, or designing a drying system that can be automatically recycled. For example, a desiccant regeneration technology is introduced to regenerate the saturated desiccant by heating or other means to restore its moisture absorption capacity.

[0058] Furthermore, a through hole for the connecting rod 32 to pass through is opened on the side wall, and the connecting rod 32 is slidably connected in the through hole, and the storage box 33 passes through the through hole, so that the storage box 33 enters or leaves the inner cavity.

[0059] In order to prevent the storage box 33 from entering the storage device 2, a through hole is formed in the side wall of the storage device 2. The storage box 33 enters the storage device 2 through this through hole. At the same time, the connecting rod 32 penetrates the through hole and enters the interior of the storage device 2 together with the storage box 33, while the straight-down closing plate 31 remains outside the storage device 2. At the same time, the cross-sectional area of the closing plate 31 is larger than the cross-sectional area of the through hole, so that the closing plate 31 can completely cover the closing plate 31. Then, a sealing gasket is provided on the side of the closing plate 31 facing the through hole to avoid the gap between the closing plate 31 and the side wall, and prevent the outside air carrying water vapor from entering the storage device 2 through the gap, thereby accelerating the consumption rate of the desiccant 34.

[0060] The present invention also provides a vehicle-mounted video. The vehicle-mounted video includes the vehicle-mounted video storage device with high reliability in rail transit in the above embodiments. The vehicle-mounted video can be a device for playing or shooting videos on rail transit such as trains or high-speed rails. Since the vehicle-mounted video adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be elaborated here one by one.

[0061] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention. Any equivalent structural transformation made under the concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A high-reliability on-board video storage device for rail transit, characterized in that: include: A storage device, the storage device comprising an electronic component and a housing, the housing forming an inner cavity, the electronic component being installed in the inner cavity, the housing having a plurality of side walls, the plurality of side walls comprising a plurality of first side walls, the first side walls being provided with heat dissipation holes communicating with the inner and outer sides of the inner cavity: A plurality of interception components are arranged on the shell, and each of the interception components corresponds to a heat dissipation hole of the first side wall, and the interception components include a plurality of sponge plates that space the equipment along the first direction.

2. The high-reliability on-board video storage device for rail transit as claimed in claim 1, characterized in that: Each of the sponge boards is provided with a plurality of ventilation holes, and for every two adjacent sponge boards, the projection of the ventilation holes on one of the sponge boards on the other sponge board is located outside the ventilation holes of the other sponge board.

3. The high-reliability on-board video storage device for rail transit as claimed in claim 1, characterized in that: The interception component also includes: A connection box, the connection box is arranged on the first side wall, a receiving cavity is formed in the connection box, and a plurality of sponge plates are movably arranged in the receiving cavity, the receiving cavity is provided with openings on a side facing the heat dissipation hole and a side away from the heat dissipation hole, and the openings are connected with the heat dissipation hole to allow air to flow into the heat dissipation hole; A plurality of support rods, wherein the plurality of support rods are detachably arranged on the first side wall, and the plurality of support rods are all located in the accommodating cavity, and a plurality of sponge boards are sleeved on the outer sides of the support rods, so as to adjust the placement position of the sponge boards when the sponge boards move along the length extension direction of the support rods; A plurality of limit plates are respectively arranged at one end of the plurality of support rods away from the first side wall, so as to limit the sponge board from being separated from the support rod when the sponge board moves away from the first side wall.

4. The high-reliability on-board video storage device for rail transit as claimed in claim 3, characterized in that: The first side wall is provided with a fixing groove for the support rod to be inserted into, so as to limit the installation position of the support rod.

5. The high-reliability on-board video storage device for rail transit as claimed in claim 3, characterized in that: The limit plate is provided with a limit block plugged into the connection box, the connection box is provided with an elastic member extending toward the limit block, the elastic member is provided with a positioning block on the side facing the limit block, and the limit block is provided with a positioning groove for the positioning block to be plugged in, so as to limit the movement of the limit plate in the direction away from the connection box.

6. The high-reliability on-board video storage device for rail transit as claimed in claim 3, characterized in that: The outer peripheral side of the sponge board is in contact with the inner peripheral wall of the accommodating cavity, so as to limit the air from directly passing through the heat dissipation hole when the sponge board is placed in the accommodating cavity.

7. The high-reliability on-board video storage device for rail transit as claimed in claim 1, characterized in that: A drying component is arranged on the side wall, and the drying component is used for absorbing water vapor in the inner cavity.

8. The high-reliability on-board video storage device for rail transit as claimed in claim 7, characterized in that: The drying component comprises: A closing plate, wherein a plurality of connecting rods are disposed on a side of the closing plate facing the side wall, and the closing plate is in contact with the side wall, and the closing plate moves toward or away from the side wall to drive the connecting rods to enter or leave the inner cavity; A storage box is arranged at one end of the plurality of connecting rods away from the closing plate, and a desiccant is placed in the storage box. The desiccant is used to absorb water vapor in the inner cavity so that when the storage box moves toward or away from the inner cavity as the connecting rods move, the desiccant is driven to enter or leave the inner cavity.

9. The high-reliability on-board video storage device for rail transit as claimed in claim 8, characterized in that: The side wall is provided with a through hole for the connecting rod to pass through, and the connecting rod is slidably connected in the through hole, and the storage box passes through the through hole, so that the storage box enters or leaves the inner cavity.

10. A vehicle-mounted video device, characterized in that: The invention comprises a high-reliability on-board video storage device for rail transit as claimed in any one of claims 1 to 9.

Images