Visual aid-to-navigation information guide notice board for airport

Abstract

The invention relates to a visual aid-to-navigation information guide notice board for an airport, and relates to the technical field of information notice boards, the visual aid-to-navigation information guide notice board for the airport comprises a case shell, a partition plate is arranged in the case shell, a photosensitive display area and a circuit control area are formed on the two sides of the partition plate respectively, and a plurality of easy-to-break rod assemblies are arranged in the circuit control area in the case shell. The multiple easy-to-break rod assemblies are arranged at intervals in the width direction of the case shell, the upper ends of the easy-to-break rod assemblies are connected with the case shell, the lower ends of the easy-to-break rod assemblies are fixedly assembled on the ground, the upper ends of the easy-to-break rod assemblies communicate with the circuit control area, the lower ends of the easy-to-break rod assemblies communicate with the outside through at least one air inlet part, and air outlet parts communicating with the circuit control area are arranged on the two sides of the upper end of the case shell correspondingly. The easy-to-break rod assembly is designed to be telescopic so that the vertical height of the device can be adjusted, and the number of the air inlet parts communicated with the outside can be adjusted. The device can synchronously adjust the height and the air inflow according to needs so as to improve the heat dissipation performance of the device.

Description

Technical Field

[0001] This application relates to the field of information signage technology, and in particular to a visual navigation aid information guidance signage for airports. Background Technology

[0002] Airport platforms are equipped with airport guidance signs, which are visual aids required for the effective operation of aircraft during landing, takeoff and taxiing. According to the regulations of the International Civil Aviation Organization, airport guidance signs must be accurately placed at the intersection of taxiways and runways, holding points and along the taxiway. Their function is to provide pilots taxiing on the ground with critical navigation information, so they must be placed in areas that are easily accessible to aircraft.

[0003] An airport navigation light sign includes: a housing, a cover plate, and a connecting rope. The lower end of the cover plate is hinged to the open end of the housing. A rubber pad is fixedly installed on the side wall of the open end of the housing. An operating box is fixedly installed at the center of the upper end of the housing. A snap-fit ​​plate is provided at the upper end of the cover plate. The snap-fit ​​plate is L-shaped. One end of the snap-fit ​​plate is fixedly installed at the center of the upper side wall of the cover plate. Teeth are provided on both the front and rear sides of the other end. By setting a snap-fit ​​plate that can be easily opened and closed, the cover plate is fixed in place, which facilitates the opening and closing of the cover plate.

[0004] The aforementioned and existing airport signs require nighttime use and are generally electronic displays. Due to prolonged operation and numerous internal circuit modules, some areas experience significant heat generation, which can lead to aging of the circuitry in those areas. Consequently, the heat dissipation performance of the device may fail to meet requirements, affecting its lifespan. Summary of the Invention

[0005] This application provides a visual navigation aid information guidance sign for airports, which can solve the problem that the heat dissipation performance of the device is insufficient due to severe local heat generation, thus affecting the service life of the device.

[0006] The technical solution of this application is as follows: A visual navigation aid information guidance sign for airports includes a chassis shell. Inside the chassis shell, a partition is provided to form a photosensitive display area and a circuit control area on both sides of the partition. The circuit control area contains a circuit control unit, and the photosensitive display area contains a display unit. Inside the chassis shell, in the circuit control area, multiple flexible lever assemblies are provided. These flexible lever assemblies are spaced apart along the width of the chassis shell. The upper end of each flexible lever assembly is connected to the chassis shell, and the lower end is fixedly mounted on the ground. The upper end of each flexible lever assembly communicates with the circuit control area, and the lower end communicates with the outside through at least one air inlet. Both sides of the upper end of the chassis shell have air outlets communicating with the circuit control area. The flexible lever assembly is designed to be telescopic to adjust the vertical height of the device and the number of air inlets communicating with the outside.

[0007] By adopting the above solution, a partition is installed inside the chassis shell, allowing the circuit control unit, which generates a large amount of heat, to be placed separately in the circuit control area and independently sealed. The flexible rod assembly connects the chassis shell to the outside air. The high heat generated by the circuit control unit causes the air inside the circuit control area to expand, allowing airflow to enter through the lower end of the flexible rod assembly. The newly entered cool air carries away the hot air and is discharged from the air outlet at the top of the chassis shell, forming a self-circulating heat dissipation. At the same time, the flexible rod assembly is made retractable, so that the height of the chassis shell can be adjusted according to the needs of the airport environment, and the number of flexible rods connected to the outside air can be adjusted, thereby adjusting the amount of cool air intake of the device and adjusting the heat dissipation effect of the device.

[0008] In one embodiment of this application, the flexible rod assembly includes a fixed tube and a movable tube. The two outer ends of the movable tube are connected and fixed to the outer casing of the chassis. The movable tube is connected to the fixed tube and the circuit control area. The lower end of the fixed tube extends to the outside of the chassis. The fixed tube has multiple air intakes spaced apart along its length. The movable tube is coaxially sleeved on the fixed tube. The movable tube and the fixed tube are slidably connected in the vertical direction to adjust the number of air intakes exposed to the outside.

[0009] By adopting the above scheme, when it is necessary to adjust the heat dissipation performance of the device, the moving pipe is moved upward, which in turn moves the entire chassis shell upward, thereby increasing the number of air intake sections exposed to the outside air at the lower end of the fixed pipe, and thus increasing the air intake of the entire device.

[0010] In one embodiment of this application, the air intake includes an annular groove and a plurality of air intake holes. The fixed tube has a plurality of annular grooves spaced apart along its own length. The inner wall of the annular groove has a plurality of air intake holes spaced apart along its own circumference. The inner wall of the moving tube has a plurality of annular elastic rings spaced apart along its own length. The annular elastic rings match the shape of the annular grooves.

[0011] By adopting the above solution, when the moving tube is moved upward, the air inlet at the bottom of the fixed tube is no longer blocked by the annular elastic ring, thereby increasing the number of air inlets that connect the fixed tube to the outside air. In addition, the other annular grooves on the fixed tube are still engaged with the moving tube through the annular elastic ring. The force exerted by the engagement between the multiple annular elastic rings and the annular grooves prevents the chassis shell from falling due to gravity. At the same time, the elasticity of the annular elastic rings themselves can buffer the chassis shell when it is affected by external vibrations. It should also be noted that by setting multiple annular grooves along the length of the fixing tube, the fixing tube can also be made more likely to break when subjected to impact, thus meeting the ICAO's requirements for the fragility of airport signs.

[0012] In one embodiment of this application, the air outlet includes a fixed body, the fixed body is hollow inside, the upper end of the fixed body is provided with an arc-shaped cover, and the lower surface of the arc-shaped cover is provided with a plurality of air outlet holes communicating with the fixed body.

[0013] By adopting the above solution, since the upper end of the fixed body is equipped with an arc-shaped cover, the arc-shaped cover can prevent external rainwater from entering the chassis through the air vent. At the same time, it does not affect the hot airflow in the circuit control to escape to the outside of the chassis through the air vent.

[0014] In one embodiment of this application, the upper end of the movable tube is provided with a plurality of first vent holes spaced apart along its circumference, and the upper end of the fixed tube is provided with a second vent hole communicating with the movable tube.

[0015] By adopting the above scheme, by opening a first vent at the upper end of the moving tube and a second vent at the upper end of the fixed tube, external cold air can enter the interior of the fixed tube through the air inlet, and then enter the interior of the moving tube through the second vent, and then enter the interior of the casing through the first vent, thereby achieving heat exchange. The gas that has absorbed heat expands and rises, and is dispersed into the external air from the air outlet, thereby achieving self-circulation and heat dissipation of the air inside the device.

[0016] In one embodiment of this application, a connecting cable is provided inside the fixed tube. One end of the connecting cable is connected and fixed to the inner wall of the movable tube, and the other end passes through the fixed tube and is connected and fixed to the bottom inner wall of the fixed tube. The length of the connecting cable is greater than the sum of the lengths of the fixed tube and the movable tube.

[0017] By adopting the above solution and installing a connecting cable of sufficient length inside the fixed tube, even if the device is scratched or hit by an aircraft, the outer casing will only bend and tip over due to the impact. The connecting cable can pull the tipped outer casing, preventing it from being knocked away by the impact force and avoiding secondary damage to the environment and the aircraft caused by the knocked-away outer casing.

[0018] In one embodiment of this application, the connecting cable further includes a plurality of counterweight balls, which are located inside the fixed tube and are spaced apart on the connecting cable along its length.

[0019] By adopting the above scheme and setting a counterweight ball, when the device is placed on the ground for operation, the vibrations transmitted by ground vehicles and aircraft are mitigated by the counterweight ball vibrating inside the fixed tube because the connecting cable is always kept slack, thereby reducing the vibration damage to the main body of the chassis to a certain extent.

[0020] In one embodiment of this application, the flexible rod assembly further includes a fixing seat, which corresponds one-to-one with the flexible rod assembly. The fixing seat includes a seat body and an elastic pad. The seat body is threadedly connected to the lower end of the fixing tube. The elastic pad is fixedly assembled on the lower end surface of the seat body. The surface of the seat body has multiple anchor holes. The seat body is connected to the ground at the anchor holes by fastening bolts.

[0021] By adopting the above solution, when it is necessary to disassemble and repair the chassis shell with damaged internal circuitry, the device can be removed from the mounting base by rotating the fixing tube, which also facilitates the replacement and installation of the chassis shell.

[0022] In one embodiment of this application, a maintenance compartment plate is fixedly connected to the side of the chassis shell near the circuit control area. Both sides of the maintenance compartment plate have openings communicating with the circuit control area, and a compartment cover is rotatably connected to the opening. A connecting beam is provided between the two compartment covers of the maintenance compartment plate, and the compartment covers and the connecting beam are locked together by a locking structure.

[0023] By adopting the above solution, when the chassis needs to be repaired in situ, the locking mechanism can be opened to allow maintenance personnel to access the circuit control unit inside the chassis from the back, thus improving the convenience of maintenance.

[0024] In one embodiment of this application, one end of the partition extends to the outside of the chassis shell and has a plurality of water inlets along its width direction. The partition is hollow inside and filled with a heat-conducting medium.

[0025] By adopting the above solution and setting a partition filled with a thermally conductive medium, the partition can conduct the heat inside the chassis to the outside of the chassis, thereby improving the heat dissipation effect of the device. At the same time, it can also absorb the heat of the circuit control unit with high heat dissipation to a certain extent, thus preventing the heat from being transferred to the display unit, and achieving a certain degree of heat insulation effect.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. By setting up a moving tube and a fixed tube, the device can adjust the position of the moving tube hovering outside the fixed tube according to the usage needs, and at the same time adjust the number of exposed air intakes. This allows the device to adjust its heat dissipation performance according to the internal heat, and also adjust the display height of the entire device according to the environment.

[0027] 2. By setting an annular groove and an annular elastic ring, when the height of the entire chassis needs to be adjusted, the chassis is moved by external force, which allows the annular elastic ring to deform under the action of external force. This improves the convenience of adjusting the height of the device. At the same time, when the chassis is suspended on the fixed pipe, the elasticity of the annular elastic ring can reduce the stress caused by vibration when the chassis is placed to a certain extent, thereby reducing the damage to the internal components.

[0028] 3. By setting up a connecting cable with a counterweight ball inside, and setting the length of the connecting cable to be greater than the sum of the lengths of the moving tube and the fixed tube, the connecting cable can remain slack when the chassis shell does not detach from the fixed tube. In the event of an impact, the connecting cable can hold the chassis shell in place, preventing it from being knocked away and causing secondary damage. At the same time, when external vibrations occur, the counterweight ball on the connecting cable can swing, thereby offsetting some of the impact caused by the vibrations. Attached Figure Description

[0029] Figure 1 This is a perspective view of a visual navigation aid information guidance sign for airports provided in the first embodiment of this application; Figure 2 This is a plan view of a visual navigation aid information guidance sign for airports provided in the first embodiment of this application; Figure 3 This is a top sectional view of a visual navigation aid information guidance sign for airports provided in the first embodiment of this application; Figure 4 This is a planar sectional view of an easily foldable pole assembly for an airport visual navigation aid information guidance sign provided in the first embodiment of this application; Figure 5 This is a perspective view of a fixing tube for a visual navigation aid information guidance sign at an airport, provided in the first embodiment of this application; Figure 6 This is a planar sectional view of the air outlet of a visual navigation aid information guidance sign for airports, provided in the first embodiment of this application; Figure 7 This is a perspective view of a mounting base for a visual navigation aid information guidance sign for airports, provided in the first embodiment of this application; Figure 8 This is a plan sectional view of a foldable pole assembly for an airport visual navigation aid information guidance sign provided in the second embodiment of this application; Figure 9 This is a perspective view of a visual navigation aid information guidance sign for airports provided in the third embodiment of this application; Figure 10 This is a plan sectional view of a visual navigation aid information guidance marker partition for airports provided in the third embodiment of this application.

[0030] Explanation of reference numerals in the attached drawings: 1. Chassis shell; 11. Partition; 111. Water inlet; 112. Heat transfer medium; 12. Photosensitive display area; 13. Circuit control area; 14. Maintenance compartment plate; 141. Compartment cover; 142. Connecting beam; 143. Locking structure; 2. Easy-break rod assembly; 21. Fixing tube; 211. Air inlet; 2111. Annular groove; 2112. Air inlet hole; 212. Second vent hole; 213. Connecting cable; 214. Counterweight ball; 22. Moving tube; 221. Annular elastic ring; 222. First vent hole; 23. Fixing base; 231. Base body; 232. Elastic pad; 3. Air outlet; 31. Fixing body; 32. Arc-shaped cover; 321. Air outlet. Detailed Implementation

[0031] The following is in conjunction with the appendix Figures 1-10 This application provides a further detailed description of a visual navigation aid information guidance sign for airports.

[0032] Example 1 Please see Figure 1 , Figure 2 and Figure 3This application provides an airport visual navigation aid information guidance sign, comprising: a chassis shell 1, wherein a partition 11 is provided inside the chassis shell 1 to form a photosensitive display area 12 and a circuit control area 13 on both sides of the partition 11, wherein a circuit control unit is provided inside the circuit control area 13, and a display unit is provided inside the photosensitive display area 12. Multiple flexible rod assemblies 2 are provided inside the chassis shell 1 at the circuit control area 13, and the multiple flexible rod assemblies 2 are spaced apart along the width direction of the chassis shell 1. The upper end of each flexible rod assembly 2 is connected to the chassis shell 1, and the lower end is fixedly mounted to the ground. The upper end of the flexible rod assembly 2 is connected to the circuit control area 13, and the lower end is connected to the outside through at least one air inlet 211. Both sides of the upper end of the chassis shell 1 are provided with air outlets 3 connected to the circuit control area 13. The flexible rod assembly 2 is designed to be telescopic to adjust the vertical height of the device and the number of air inlets 211 connected to the outside. By making the flexible rod assembly 2 telescopic, the device can adjust the height of the chassis shell 1 according to the needs of the airport environment, and at the same time adjust the number of flexible rods connected to the outside air, thereby adjusting the amount of cold air intake of the device and adjusting the heat dissipation effect of the device.

[0033] In this embodiment, the display unit may be an LED navigation information display screen, a display control system, and an information module. The LED navigation information display screen, the display control system, and the information module are all electrically connected to the circuit control unit. The specific connection method is a conventional technical means for those skilled in the art, and therefore will not be described in detail here. The circuit control unit can be a transformer, an integrated drive module, and a drive power supply, wherein the transformer, integrated drive module, and drive power supply are encapsulated by an insulating and waterproof housing, such as a ceramic component.

[0034] Please see Figure 4 and Figure 5 The flexible rod assembly 2 includes a fixed tube 21 and a movable tube 22. The two outer ends of the movable tube 22 are connected and fixed to the outer casing 1. The movable tube 22 is connected to the fixed tube 21 and the circuit control area 13. The lower end of the fixed tube 21 extends to the outside of the outer casing 1. The fixed tube 21 has multiple air intakes 211 spaced apart along its length. The movable tube 22 is coaxially sleeved on the fixed tube 21. The movable tube 22 and the fixed tube 21 are slidably connected in the vertical direction to adjust the number of air intakes 211 exposed to the outside. By moving the movable tube 22 upward, the number of air intakes 211 exposed to the outside air at the lower end of the fixed tube 21 increases, thereby increasing the air intake of the entire device.

[0035] Please see Figure 5The air intake 211 includes an annular groove 2111 and multiple air intake holes 2112. The fixed tube 21 has multiple annular grooves 2111 spaced apart along its length. The inner wall of the annular groove 2111 has multiple air intake holes 2112 spaced apart along its circumference. The inner wall of the moving tube 22 has multiple annular elastic rings 221 spaced apart along its length. The annular elastic rings 221 match the shape of the annular grooves 2111. The force exerted by the multiple annular elastic rings 221 and the annular grooves 2111 when they are engaged with each other prevents the chassis shell 1 from falling due to gravity. At the same time, the elasticity of the annular elastic rings 221 can buffer the chassis shell 1 when it is affected by external vibrations.

[0036] Please see Figure 1 and Figure 6 The air outlet 3 includes a fixed body 31, which is hollow inside. The upper end of the fixed body 31 is provided with an arc-shaped cover 32. The lower surface of the arc-shaped cover 32 is provided with a plurality of air outlet holes 321 that communicate with the fixed body 31. By providing the arc-shaped cover 32, external rainwater can be prevented from entering the casing 1 through the air outlet holes 321, thereby improving the waterproofness of the device.

[0037] Please see Figure 4 The upper end of the moving tube 22 is provided with a plurality of first vent holes 222 spaced apart along its circumference, and the upper end of the fixed tube 21 is provided with a second vent hole 212 that communicates with the moving tube 22. By setting the first vent holes 222 and the second vent holes 212 that can communicate with each other, cold air can achieve air self-circulation and heat dissipation inside the device.

[0038] Please continue reading. Figure 4 The fixed tube 21 is equipped with a connecting cable 213 inside. One end of the connecting cable 213 is connected and fixed to the inner wall of the moving tube 22, and the other end passes through the fixed tube 21 and is connected and fixed to the bottom inner wall of the fixed tube 21. The length of the connecting cable 213 is greater than the sum of the lengths of the fixed tube 21 and the moving tube 22. By setting a connecting cable 213 of sufficient length inside the fixed tube 21, the connecting cable 213 can pull the tilted chassis shell 1 so that it will not be knocked away by the impact force, thus avoiding secondary damage to the environment and the aircraft caused by the knocked-away chassis shell 1.

[0039] Please see Figure 4 and Figure 7The flexible rod assembly 2 also includes a fixing seat 23, which corresponds one-to-one with the flexible rod assembly 2. The fixing seat 23 includes a seat body 231 and an elastic pad 232. The seat body 231 is threadedly connected to the lower end of the fixing tube 21. The elastic pad 232 is fixedly assembled on the lower surface of the seat body 231. The surface of the seat body 231 has multiple anchor holes. The seat body 231 is connected to the ground at the anchor holes by fastening bolts. By setting the threaded fixing tube 21, the convenience of replacing and disassembling the chassis shell 1 is improved.

[0040] Please see Figure 1 and Figure 2 A maintenance compartment plate 14 is fixedly connected to the side of the chassis shell 1 near the circuit control area 13. Both sides of the maintenance compartment plate 14 have openings communicating with the circuit control area 13, and a compartment cover 141 is rotatably connected to the opening. A connecting beam 142 is provided between the two compartment covers 141. The compartment covers 141 and the connecting beam 142 are locked together by a locking structure 143. By opening the locking mechanism, maintenance personnel can easily access the back of the chassis shell 1, which improves the convenience of maintenance.

[0041] In this embodiment, the locking mechanism may be a pin and a pin seat. The pin is slidably mounted on the cover 141, and the pin seat corresponds one-to-one with the pin and is fixedly mounted on the connecting beam 142.

[0042] Example 2 is basically the same in structure as Example 1. The difference is that, in order to further improve the shock absorption capability of the device, the following features are used: Please see Figure 8 The connecting cable 213 also includes a plurality of counterweight balls 214, which are located inside the fixed tube 21 and are spaced apart on the connecting cable 213 along its length. By setting the counterweight balls 214, and taking advantage of the characteristic that the connecting cable 213 is always slack, the counterweight balls 214 can vibrate inside the fixed tube 21, thereby reducing the vibration damage to the chassis shell 1 to a certain extent.

[0043] Example 3 is basically the same in structure as Example 1. The difference is that, in order to further improve the heat dissipation capacity of the device, the following features are used: Please see Figure 9 and Figure 10One end of the partition 11 extends to the outside of the chassis shell 1 and has multiple water inlets 111 along its width. The partition 11 is hollow inside and filled with a heat-conducting medium 112. By setting the partition 11 filled with a heat-conducting medium 112, the heat dissipation effect of the device is further improved, and the heat of the circuit control area 13 is also prevented from being transferred to the display unit, thus achieving a certain degree of heat insulation effect.

[0044] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A visual navigation aid information guidance sign for airports, characterized in that, include: The chassis shell (1) has a partition (11) inside, so as to form a photosensitive display area (12) and a circuit control area (13) on both sides of the partition (11), respectively. The circuit control area (13) is provided with a circuit control unit, and the photosensitive display area (12) is provided with a display unit. The chassis shell (1) has multiple flexible rod assemblies (2) in the circuit control area (13) inside. The multiple flexible rod assemblies (2) are spaced apart along the width direction of the chassis shell (1). The upper end of the flexible rod assembly (2) is connected to the chassis shell (1), and the lower end is fixedly mounted on the ground. The upper end of the flexible rod assembly (2) is connected to the circuit control area (13), and the lower end is connected to the outside through at least one air inlet (211). The upper sides of the chassis shell (1) are provided with air outlets (3) that are connected to the circuit control area (13). The flexible rod assembly (2) is designed to be telescopic to adjust the vertical height of the device and the number of air intakes (211) communicating with the outside.

2. The visual navigation aid information guidance sign for airports according to claim 1, characterized in that: The flexible rod assembly (2) includes a fixed tube (21) and a movable tube (22). The two ends of the movable tube (22) are connected and fixed to the outer shell of the chassis (1). The movable tube (22) is connected to the fixed tube (21) and the circuit control area (13). The lower end of the fixed tube (21) extends to the outside of the outer shell of the chassis (1). The fixed tube (21) has multiple air intakes (211) spaced apart along its own length. The movable tube (22) is coaxially sleeved on the fixed tube (21). The movable tube (22) and the fixed tube (21) are slidably connected in the vertical direction to adjust the number of air intakes (211) exposed to the outside.

3. The visual navigation aid information guidance sign for airports according to claim 2, characterized in that: The air intake (211) includes an annular groove (2111) and a plurality of air intake holes (2112). The fixed tube (21) has a plurality of annular grooves (2111) spaced apart along its own length direction. The inner wall of the annular groove (2111) has a plurality of air intake holes (2112) spaced apart along its own circumference. The inner wall of the movable tube (22) is provided with a plurality of annular elastic rings (221) spaced apart along its own length direction, and the annular elastic rings (221) match the shape of the annular groove (2111).

4. The visual navigation aid information guidance sign for airports according to claim 3, characterized in that, The air outlet (3) includes a fixed body (31), which is hollow inside. The upper end of the fixed body (31) is provided with an arc-shaped cover (32), and the lower surface of the arc-shaped cover (32) is provided with a plurality of air outlet holes (321) communicating with the fixed body (31).

5. The visual navigation aid information guidance sign for airports according to claim 4, characterized in that: The upper end of the movable tube (22) is provided with a plurality of first vent holes (222) spaced apart along its circumference, and the upper end of the fixed tube (21) is provided with a second vent hole (212) communicating with the movable tube (22).

6. The visual navigation aid information guidance sign for airports according to claim 2, characterized in that: The fixed tube (21) is provided with a connecting cable (213) inside. One end of the connecting cable (213) is connected and fixed to the inner wall of the moving tube (22), and the other end passes through the fixed tube (21) and is connected and fixed to the bottom inner wall of the fixed tube (21). The length of the connecting cable (213) is greater than the sum of the lengths of the fixed tube (21) and the moving tube (22).

7. An airport visual navigation aid information guidance sign according to claim 6, characterized in that: The connecting cable (213) also includes a plurality of counterweight balls (214), which are located inside the fixed tube (21) and are spaced apart on the connecting cable (213) along the length of the connecting cable (213).

8. The visual navigation aid information guidance sign for airports according to claim 2, characterized in that: The flexible rod assembly (2) also includes a fixing seat (23), which corresponds one-to-one with the flexible rod assembly (2). The fixing seat (23) includes a seat body (231) and an elastic pad (232). The seat body (231) is threaded to the lower end of the fixing tube (21). The elastic pad (232) is fixedly assembled on the lower surface of the seat body (231). The surface of the seat body (231) is provided with multiple anchor holes. The seat body (231) is connected to the ground at the anchor holes by fastening bolts.

9. A visual navigation aid information guidance sign for airports according to claim 1, characterized in that, A maintenance compartment plate (14) is fixedly connected to the side of the outer casing (1) near the circuit control area (13). Both sides of the maintenance compartment plate (14) have openings that communicate with the circuit control area (13), and a compartment cover (141) is rotatably connected to the opening. A connecting beam (142) is provided between the two compartment covers (141) of the maintenance compartment plate (14). The compartment covers (141) and the connecting beam (142) are locked together by a locking structure (143).

10. An airport visual navigation aid information guidance sign according to claim 1, characterized in that, One end of the partition (11) extends to the outside of the outer casing (1) of the chassis and is provided with a plurality of water inlets (111) along its width direction. The partition (11) is hollow inside and filled with a heat-conducting medium (112).

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