A tunnel distance indication device

Abstract

The utility model discloses a tunnel distance indicating device, including lighthouse and install a plurality of lamp body on the upper end of lighthouse. Lighthouse is by main rod, sleeve, support rod, connecting rod and locking bolt is composed, and adjustable height is provided with stable support, and the sliding roller of bottom is convenient for quick positioning. The built -in casing of lamp body is equipped with the installation groove on the casing surface, and is built -in light source subassembly, circuit control module, response module and voice module. Light shield board covers installation groove, and is equipped with distance indicating structure and light blocking piece thereon, and can adjust display content flexibly. Circuit control module includes battery module, transformer module, conversion circuit module, charging circuit module and discharge circuit module, realizes power management and conversion. The device has the advantages of height adjustability, convenient installation, multi -dimensional information indication, high -precision response and intelligent control, modular structure is convenient for maintenance, and the simple and reliable structure is low in energy consumption, and the cost is controllable, is applicable to a variety of tunnel lighting and safety indicating system integration, promotes the safety and intelligent level of tunnel operation.

Description

Technical Field

[0001] This utility model relates to the field of traffic engineering and tunnel safety technology, and in particular to a tunnel distance indicator device. Such devices are typically used in tunnels to provide distance information, lighting, and safety warnings to vehicles and pedestrians. They fall under the category of intelligent transportation and tunnel safety facilities technology, and help improve the safety and intelligence level of tunnel operations. Background Technology

[0002] In tunnel construction and operation, accurately indicating the distance from the current location to the tunnel exit is of great significance. On the one hand, it helps drivers understand the remaining tunnel length in advance, adjust their speed and driving strategy accordingly, and ensure driving safety. On the other hand, it also facilitates the rapid assessment of the distance to the exit in emergency situations, enabling effective emergency evacuation. However, existing methods of tunnel distance marking have many drawbacks.

[0003] The common method for marking tunnel distances currently involves stamping or cutting numbers onto reflective signs to indicate the distance to the exit, such as placing a reflective sign marked "200 meters" 200 meters from the exit. However, this traditional method faces a series of problems in practical application.

[0004] First, from a manufacturing process perspective, stamping or cutting numbers is difficult to mass-produce efficiently. Each time a sign with different distance values ​​is produced, it requires the adjustment and setting of individual stamping or cutting dies for specific numbers, making the production process cumbersome and inefficient, resulting in high processing costs.

[0005] Secondly, this problem becomes even more pronounced during the installation phase at the tunnel site. Because tunnels are often quite long, a large number of distance indicator signs need to be installed, and these signs have varying numbers. Installers must manually locate and install each sign from a pool of pre-made ones, based on the measured distances. This process is not only extremely labor-intensive and time-consuming, but also highly prone to errors. Once an error occurs, it's often not as simple as replacing a single sign; it requires removing two or more incorrectly installed signs and reinstalling them. This undoubtedly increases the difficulty and cost of construction, severely impacts the overall efficiency of the installation, and causes significant inconvenience to on-site operations.

[0006] In summary, existing tunnel distance marking methods have significant shortcomings in both manufacturing and installation. There is an urgent need for a tunnel distance marking solution that can optimize the manufacturing process, reduce processing costs, and facilitate efficient on-site installation to address these issues. Utility Model Content

[0007] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a tunnel distance indicator device with a simple and reliable structure, low energy consumption, and controllable cost. It is suitable for integration with various tunnel lighting and safety indication systems, thereby improving the safety and intelligence level of tunnel operations.

[0008] A tunnel distance indicating device according to a first aspect of the present invention is characterized in that it includes a lighthouse and a plurality of light bodies installed on the upper part of the lighthouse; The lighthouse includes a main pole and a sleeve slidably fitted onto the main pole. At least three support rods are rotatably mounted on the lower end of the main pole. One end of each support rod is hinged to the main pole, and a connecting rod is hinged to the middle of each support rod. The end of the connecting rod away from the support rod is hinged to the sleeve. A locking bolt that abuts against the main pole is screwed onto the sleeve. Sliding rollers are also installed at the bottom of the main pole. Two mounting plates for mounting the light body are provided at the top of the lighthouse. The lamp body is provided with: The housing has a mounting groove on its surface, in which a light source assembly is fixedly mounted. Inside the housing are a circuit control module, a sensing module that is communicatively connected to the circuit control module, and a voice module that is communicatively connected to the sensing module. The voice module includes a speaker, and the surface of the lamp body has a through hole corresponding to the speaker. At least two lamp heads are symmetrically arranged on both sides of the lamp body and electrically connected to the circuit control module; wherein, the circuit control module is configured to synchronously control the lighting state of the lamp heads and the prompt voice playback of the voice module according to the trigger signal of the sensing module; the sensing module adopts a radar wave sensor with a sensing angle covering 120-160 degrees; A light-blocking plate is detachably attached to the opening of the mounting slot. The light-blocking plate has at least one distance indicator structure and multiple light-blocking elements on one side of its surface facing the mounting slot. The distance indicator structure includes a numerical symbol cutout slot, which is formed by seven linearly arranged light-transmitting slots in a figure-eight topology. The light-transmitting slots communicate with the interior of the mounting slot. The distance indicator structure also includes unit symbol cutout slots located adjacent to the numerical symbol cutout slots, which constitute a length unit identification display unit. The light-blocking component is a light-shielding sheet that can be detachably inserted into the light-transmitting slot, forming a decimal digital display unit by selectively blocking part of the light-transmitting slot.

[0009] A tunnel distance indicating device according to an embodiment of the present utility model has at least the following beneficial effects: Adjustable height and convenient installation: The lighthouse height can be flexibly adjusted and stably supported through the cooperation of the main rod, sleeve, support rod and connecting rod. The bottom sliding rollers facilitate quick positioning of the device in the tunnel, improving installation efficiency.

[0010] Multi-dimensional information indication: Combining the digital display structure of light source components, voice module and light-blocking plate, it simultaneously realizes the intuitive display of visual lighting, voice prompts and distance values, enhancing the guidance effect for vehicles and people in the tunnel.

[0011] High-precision sensing and intelligent control: The sensing module uses a wide-angle radar wave sensor, which works in conjunction with the circuit control module to synchronously regulate the headlight illumination and voice playback, ensuring accurate dynamic prompts under different vehicle speeds and ambient light conditions.

[0012] Modular structure facilitates maintenance: Each functional component and light-blocking plate adopts a detachable design, which facilitates the replacement and maintenance of parts, and at the same time, the display content can be flexibly adjusted to adapt to the needs of different tunnel scenarios.

[0013] Economic practicality and compatibility: The overall structure is simple and reliable, with low energy consumption and controllable cost. It can be integrated with various tunnel lighting and safety indication systems to improve the safety and intelligence level of tunnel operation.

[0014] According to some embodiments of the present invention, the distance indication structure further includes a direction symbol cutout groove, wherein the unit symbol cutout groove and the number symbol cutout groove are arranged side by side along the extension direction of the direction symbol cutout groove.

[0015] According to some embodiments of the present invention, two mirror-symmetrical distance indicator structures are arranged horizontally side by side on the light-blocking plate, and the direction symbol cutouts of the two structures point in opposite directions; The light-blocking component is inserted into the unit symbol slot, the direction symbol slot, and the number symbol slot of one of the distance indicator structures.

[0016] According to some embodiments of the present invention, a light-diffusing plate is provided in the mounting groove between the light source assembly and the light-blocking plate, and the light-diffusing plate is arranged parallel to the light-emitting surface of the light source assembly; wherein the light source assembly is electrically connected to the circuit control module.

[0017] According to some embodiments of this utility model, the inner wall of the mounting groove is provided with an annular positioning groove, the edge of the light-diffusing plate is embedded in the positioning groove, and the axial fixation is achieved by pressing the light-blocking plate.

[0018] According to some embodiments of the present invention, the depth of the annular positioning groove is greater than the thickness of the light-diffusing plate, forming a gap space to accommodate the thermal expansion of the light-diffusing plate.

[0019] According to some embodiments of the present invention, the light-blocking plate is provided with outwardly extending mounting wing plates on opposite sides, and the mounting wing plates are provided with mounting holes for connection with the mounting plate.

[0020] According to some embodiments of the present invention, the light-blocking plate is provided with limiting flanges on both sides, and the mounting wing plate and the limiting flanges together form an engaging structure surrounding the periphery of the housing.

[0021] According to some embodiments of the present invention, the light-blocking plate is detachably connected to the housing by a circumferentially distributed bolt assembly, and the bolt holes are arranged to avoid the light-transmitting groove.

[0022] According to some embodiments of the present invention, the circuit control module includes: a battery module, a transformer module connected to the mains power, a conversion circuit module electrically connected to the transformer module and the battery module respectively, a charging circuit module connected between the conversion circuit module and the battery module, and a discharge circuit module connected between the battery module and the lamp holder.

[0023] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the lighthouse according to an embodiment of the present utility model; Figure 2 This is a schematic diagram of the hierarchical structure of the lamp body according to an embodiment of the present utility model; Figure 3 This is a schematic diagram of the lamp body according to an embodiment of the present utility model; Figure 4 This is a schematic diagram of the structure of the lamp body on the other side of an embodiment of the present utility model; Figure 5 This is a schematic diagram of the circuit control module of the tunnel distance indicator device according to an embodiment of the present invention.

[0025] 1. Lighthouse; 10. Housing; 11. Mounting slot; 13. Sleeve; 14. Support rod; 15. Connecting rod; 16. Locking bolt; 17. Main rod; 18. Sliding roller; 19. Mounting plate; 20. Light source assembly; 2. Circuit control module; 3. Sensing module; 4. Voice module; 41. Speaker; 42. Through hole; 5. Lamp head; 30. Light blocking plate; 23. Light blocking component; 22. Numerical symbol cutout slot; 321. Light transmission slot; 24. Unit symbol cutout slot; 25. Direction symbol cutout slot; 40. Light distribution plate; 12. Annular positioning slot; 26. Mounting wing plate; 27. Limiting flange; 124. Battery module; 125. Transformer module; 121. Conversion circuit module; 122. Charging circuit module; 123. Discharging circuit module. Detailed Implementation

[0026] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0027] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is used in the description, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Reference Figure 1 A tunnel distance indicating device according to a first aspect of the present invention is characterized in that it includes a lighthouse 1 and a plurality of light bodies installed on the upper end of the lighthouse 1. The lighthouse 1 includes a main pole 17 and a sleeve 13 slidably fitted onto the main pole 17. At least three support rods 14 are rotatably mounted on the lower end of the main pole 17. One end of each support rod 14 is hinged to the main pole 17, and a connecting rod 15 is hinged to the middle of each support rod 14. The end of the connecting rod 15 away from the support rod 14 is hinged to the sleeve 13. A locking bolt 16, which abuts against the main pole 17, is screwed onto the sleeve 13. A sliding roller 18 is also installed at the bottom of the main pole 17. Two mounting plates 19 for mounting the light body are provided at the top of the lighthouse 1. Through the sliding fit between the main pole 17 and the sleeve 13, and the fixing of the locking bolt 16, the height of the lighthouse 1 can be easily adjusted to adapt to different tunnel heights and lighting requirements. At least three support rods 14 are installed at the lower end of the main pole 17. The support rods 14 are connected to the sleeve 13 via connecting rods 15. Utilizing the mechanism principle of connecting rods 15, the lighthouse 1 ensures good stability and support when deployed. The sliding rollers 18 at the bottom of the main pole 17 facilitate the rapid movement and positioning of the lighthouse 1 within the tunnel, improving the efficiency of installation and maintenance. The two mounting plates 19 at the top of the lighthouse 1 provide a stable mounting base for the light body, ensuring the stability of the light body during operation.

[0031] The lamp body is provided with: The housing 10 has a mounting groove 11 on its surface, in which a light source assembly 20 is fixedly installed. Inside the housing 10 are a circuit control module 2, a sensing module 3 communicatively connected to the circuit control module 2, and a voice module 4 communicatively connected to the sensing module 3. The voice module 4 includes a speaker 41, and the surface of the lamp body has a through hole 42 corresponding to the speaker 41. This emergency light integrates the circuit control module 2, the sensing module 3, and the voice module 4 within its housing 10. The circuit control module 2 is further subdivided into an interconnected conversion circuit module 121, a charging circuit module 122, a discharging circuit module 123, and a battery module 124. The conversion circuit module 121 is connected to the transformer module 125, and its core function is to enable flexible switching between normal mains power supply and emergency standby mode for the emergency light. This design greatly facilitates the daily maintenance and management of the emergency light. The charging circuit module 122 focuses on charging the battery module 124, ensuring that the battery module 124's lifespan is maintained within a reasonable and controllable range through precise charging control strategies. The discharge circuit module 123 plays a crucial role when the emergency light is in emergency mode. It can orderly control the battery module 124 to release electrical energy, providing stable and reliable power support for the lamp head 5, the sensor module 3 and the voice module 4.

[0032] The circuit control module 2 is not only closely connected to the sensing module 3 and the lamp head 5, but also establishes a data transmission channel with the voice module 4 through the sensing module 3. The voice module 4 is equipped with a speaker 41. To ensure that the speaker 41 can issue voice prompts normally and efficiently, a through hole 42 is specially opened on the surface of the lamp housing at the position corresponding to the speaker 41. A radar sensor is used in the selection of the sensing module 3, which can sensitively perceive dynamic changes in the surrounding environment. When the emergency light is in emergency mode, that is, providing illumination in emergency situations such as power outages, once the radar sensor detects that an escapee has entered its sensing area, it will quickly trigger the voice module 4 to start, broadcasting clear and unambiguous voice prompts to the escapee through the speaker 41, guiding them to escape in the correct direction, thereby significantly improving the success rate of escape and fully reflecting the human-centered design considerations.

[0033] At least two lamp heads 5 are symmetrically arranged on both sides of the lamp body and electrically connected to the circuit control module 2. This arrangement of at least two lamp heads 5 on both sides of the lamp body enables a more uniform and wider lighting coverage, ensuring that vehicles and pedestrians at different locations within the tunnel can clearly see the lighting indicators, improving visibility and safety within the tunnel. The circuit control module 2 is configured to synchronously control the lighting state of the lamp heads 5 and the prompt voice playback of the voice module 4 based on the trigger signal from the sensing module 3. This synchronous control function allows the lighting and voice prompts to work in coordination. When a vehicle or pedestrian is detected approaching, the lamp head 5 illuminates promptly to provide illumination, while the voice module 4 plays a prompt message, enhancing the real-time performance and effectiveness of the indicator device and better guiding vehicles and pedestrians. The sensing module 3 uses a radar wave sensor with a sensing angle coverage of 120-160 degrees. The radar wave sensor can accurately detect the approach and movement of vehicles or objects, with fast response speed and high reliability, ensuring accurate triggering of the lamp head 5 for lighting and voice prompts under various environmental conditions, thus improving the applicability and stability of the device.

[0034] A light-blocking plate 30 is detachably installed over the opening of the mounting groove 11, facilitating installation and maintenance. When the distance indicator structure needs replacement or adjustment, only the light-blocking plate 30 needs to be removed to maintain or replace the internal light source assembly 20 and circuitry, greatly improving the maintainability of the equipment. The light-blocking plate 30 has at least one distance indicator structure and multiple light-blocking elements 23 on its surface facing the mounting groove 11. The distance indicator structure includes a digital symbol cutout slot 22, which is formed by seven linearly arranged light-transmitting slots 321 forming an "8" shaped topology. These light-transmitting slots 321 communicate with the interior of the mounting groove 11 and can display decimal numbers from 0 to 9, intuitively indicating distance information within the tunnel. The unit symbol cutout slot 24 displays the length unit identifier, further enhancing the clarity and readability of the distance indication; the distance indication structure also includes a unit symbol cutout slot 24 disposed on the adjacent side of the number symbol cutout slot 22, the unit symbol cutout slot 24 constituting a length unit identifier display unit; through the combination of the cutout slot and the light shield on the light shield 30, the distance indication device can provide a clear and bright distance display in the tunnel, ensuring that vehicles and pedestrians can easily identify distance information even under low light conditions, thereby improving visibility and safety in the tunnel.

[0035] The light-blocking component 23 is a light-shielding sheet that can be detachably inserted into the light-transmitting slot 321. By selectively blocking part of the light-transmitting slot 321, a decimal number display unit from 0 to 9 is formed. By selectively blocking part of the light-transmitting slot 321, the displayed number can be flexibly adjusted. This design allows the distance indicator device to quickly adjust the displayed content according to actual needs, making it suitable for tunnels of different lengths or different application scenarios.

[0036] A tunnel distance indicating device according to an embodiment of the present utility model has at least the following beneficial effects: Height adjustable and easy to install: The height of the lighthouse 1 can be flexibly adjusted and stably supported through the cooperation of the main rod 17, sleeve 13, support rod 14 and connecting rod 15. The bottom sliding roller 18 facilitates the quick positioning of the device in the tunnel and improves installation efficiency.

[0037] Multi-dimensional information indication: Combining the digital display structure of the light source component 20, the voice module 4 and the light-blocking plate 30, visual lighting, voice prompts and distance values ​​are displayed intuitively, enhancing the guidance effect for vehicles and people in the tunnel.

[0038] High-precision sensing and intelligent control: The sensing module 3 adopts a wide-angle radar wave sensor, which works in conjunction with the circuit control module 2 to synchronously control the lighting of the lamp head 5 and the voice playback, ensuring accurate dynamic prompts under different vehicle speeds and ambient light conditions.

[0039] Modular structure facilitates maintenance: Each functional component and light-blocking plate 30 adopts a detachable design, which facilitates the replacement and maintenance of parts, and at the same time, the display content can be flexibly adjusted to adapt to the needs of different tunnel scenarios.

[0040] Economic practicality and compatibility: The overall structure is simple and reliable, with low energy consumption and controllable cost. It can be integrated with various tunnel lighting and safety indication systems to improve the safety and intelligence level of tunnel operation.

[0041] According to some embodiments of this utility model, the distance indicating structure further includes a directional symbol slot 25, and the unit symbol slot 24 and the number symbol slot 22 are arranged side by side along the extension direction of the directional symbol slot 25. The addition of the directional symbol slot 25 enables the indicating device to not only display distance values ​​and units, but also clearly indicate direction. In tunnel environments, vehicles and pedestrians can not only obtain distance information, but also clearly know their direction of travel, which is of great significance for guiding traffic and avoiding getting lost. Arranging the unit symbol slot 24 and the number symbol slot 22 side by side along the extension direction of the directional symbol slot 25 conforms to people's visual reading habits. When viewing the indicating information, people can see the unit and numerical information sequentially following the direction symbols, without needing to move their eyes significantly or switch back and forth, improving the efficiency and convenience of information acquisition.

[0042] According to some embodiments of this utility model, two mirror-symmetrical distance indicator structures are horizontally arranged side by side on the light-blocking plate 30, with their direction symbol slots 25 pointing in opposite directions. This allows the device to simultaneously indicate distance information in two opposite directions. In a tunnel environment, this meets the needs of two-way tunnels, ensuring accurate distance indication in the corresponding direction whether a vehicle enters from the tunnel entrance or exits from the exit, thus improving the applicability and practicality of the device. The light-blocking element 23 is inserted into the unit symbol slot 24, the direction symbol slot 25, and the number symbol slot 22 of one of the distance indicator structures. This design allows for selective blocking or display of specific indicator information as needed. For example, in some scenarios, only distance information in one direction may need to be displayed. In this case, by inserting the light-blocking element 23, the indicator structure in the other direction can be hidden, making the displayed content simpler and clearer, and avoiding information interference.

[0043] According to some embodiments of this utility model, a light-diffusing plate 40 is provided in the mounting groove 11 between the light source assembly 20 and the light-blocking plate 30. The light-diffusing plate 40 is arranged parallel to the light-emitting surface of the light source assembly 20; wherein the light source assembly 20 is electrically connected to the circuit control module 2. The light-diffusing plate 40 can uniformly distribute the light emitted by the light source assembly 20, making the light softer and more uniformly pass through the hollowed-out groove on the light-blocking plate 30. This avoids the situation where the light is too concentrated in some areas or too dark in other areas, ensuring that the numbers, units, and direction symbols are displayed clearly and uniformly, improving visibility. Through the action of the light-diffusing plate 40, the light forms a more uniform brightness in the display area, enhancing the display effect of the entire distance indicator structure. Whether it is numbers, units, or direction symbols, they can be presented with consistent brightness, allowing the observer to accurately obtain information from different angles and positions.

[0044] According to some embodiments of this utility model, the inner wall of the mounting groove 11 is provided with an annular positioning groove 12. The edge of the light-diffusing plate 40 is embedded in the positioning groove and is axially fixed by the pressing of the light-blocking plate 30. The annular positioning groove 12 provides a precise installation position for the light-diffusing plate 40, ensuring that the light-diffusing plate 40 is parallel to the light-emitting surface of the light source assembly 20, thereby ensuring a uniform light distribution effect. This positioning method can effectively reduce the offset or tilt of the light-diffusing plate 40 during installation, improving the stability and reliability of the optical system. The light-diffusing plate 40 is embedded in the annular positioning groove 12, closely fitting the inner wall of the mounting groove 11, and is fixed by the pressing of the light-blocking plate 30, forming a stable support structure. This makes the light-diffusing plate 40 less prone to loosening or displacement during long-term use, and can maintain a stable working state even in the event of slight vibration or airflow disturbance in the tunnel.

[0045] According to some embodiments of this utility model, the depth of the annular positioning groove 12 is greater than the thickness of the light-diffusing plate 40, forming a gap space to accommodate the thermal expansion of the light-diffusing plate 40. The light-diffusing plate 40 may undergo thermal expansion due to temperature changes during operation. The greater depth of the annular positioning groove 12 provides sufficient space for the thermal expansion of the light-diffusing plate 40, preventing compression or deformation between the light-diffusing plate 40 and the inner wall of the mounting groove 11 caused by expansion, thereby ensuring the normal function and optical performance of the light-diffusing plate 40. By reserving space for thermal expansion, fatigue damage to the light-diffusing plate 40 caused by thermal stress is reduced. This helps extend the service life of the light-diffusing plate 40 and reduces the maintenance frequency and cost of the device.

[0046] According to some embodiments of this utility model, the light-blocking plate 30 is provided with outwardly extending mounting wing plates 26 on opposite sides, and the mounting wing plates 26 are provided with mounting holes for connection with the mounting plate 19. The outward extension of the mounting wing plates 26 and the presence of mounting holes make the connection between the light-blocking plate 30 and the mounting plate 19 at the top of the lighthouse 1 more convenient and quick. Installers can use bolts, screws, or other fasteners to firmly fix the light-blocking plate 30 to the mounting plate 19 through the mounting holes, eliminating the need for complex positioning or welding operations and improving installation efficiency. The mounting wing plates 26 provide additional support points for the light-blocking plate 30, enhancing the connection strength between the light-blocking plate 30 and the lighthouse 1. In a tunnel environment, vibrations or airflow impacts from passing vehicles may exert a certain force on the light-blocking plate 30; the mounting wing plates 26 effectively disperse these forces, ensuring that the light-blocking plate 30 remains stable during long-term use and does not loosen or shift.

[0047] According to some embodiments of this utility model, the light-blocking plate 30 is provided with limiting flanges 27 on both sides. The mounting wing plate 26 and the limiting flanges 27 together form a locking structure surrounding the periphery of the housing 10. The locking structure formed by the limiting flanges 27 and the mounting wing plate 26 can limit and fix the housing 10 from multiple directions. During the operation of the tunnel distance indicator device, under the action of external forces such as vibrations from passing vehicles or airflow impacts, this locking structure can effectively prevent relative displacement between the housing 10 and the light-blocking plate 30, enhance the structural stability of the entire device, and ensure that the device maintains a good working condition during long-term use. The locking structure provides a precise installation position for the housing 10, and the limiting flanges 27 can limit the range of movement of the housing 10 on the light-blocking plate 30, so that the housing 10 can be accurately installed in the predetermined position. This helps to ensure the fitting accuracy between the housing 10 and the light-blocking plate 30, thereby ensuring the uniform distribution of light and the accurate display of distance indication information, improving the overall performance and reliability of the device. According to some embodiments of this utility model, the light-blocking plate 30 is detachably connected to the housing 10 via circumferentially distributed bolt assemblies, with the bolt holes positioned to avoid the light-transmitting groove 321. The circumferentially distributed bolt assemblies are evenly distributed in the connection area between the light-blocking plate 30 and the housing 10, ensuring the stability and reliability of the connection. The combined action of multiple bolts effectively disperses the stress between the light-blocking plate 30 and the housing 10, preventing loosening or damage due to localized stress concentration, thus improving the structural stability of the entire device. The detachable connection achieved by the bolt assemblies makes the installation and removal of the light-blocking plate 30 simple and quick. When maintenance, cleaning, or replacement of the light-blocking plate 30 is required, it can be easily removed simply by loosening the bolts, without the need for complex tools or operations. This design significantly reduces maintenance difficulty and time costs, improving the maintainability of the device.

[0048] According to some embodiments of this utility model, the circuit control module 2 includes: a battery module 124, a transformer module 125 connected to mains power, a conversion circuit module 121 electrically connected to the transformer module 125 and the battery module 124 respectively, a charging circuit module 122 connected between the conversion circuit module 121 and the battery module 124, and a discharging circuit module 123 connected between the battery module 124 and the lamp holder 5. The circuit control module 2 includes the battery module 124 and the transformer module 125 connected to mains power. This design ensures that the device can operate normally when mains power is available, while the battery module 124 can also provide backup power for the device. In tunnels, where there may be unstable power or sudden power outages, this design can guarantee the continuous operation of the distance indicator device, improving the reliability and stability of the device. The conversion circuit module 121, electrically connected to the transformer module 125 and the battery module 124 respectively, can convert mains power into DC power or other required forms of electrical energy suitable for the device. Meanwhile, the charging circuit module 122 is connected between the conversion circuit module 121 and the battery module 124, and can charge the battery module 124 to ensure that the battery has sufficient power. The discharging circuit module 123 is connected between the battery module 124 and the lamp holder 5, and controls the battery module 124 to discharge to the lamp holder 5, so as to realize the rational distribution and efficient utilization of energy.

[0049] The embodiments described above with reference to the accompanying drawings have been described in detail. However, the embodiments are not limited to those described above. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the invention.

Claims

1. A tunnel distance indicating device, characterized in that: Includes a lighthouse (1) and several light bodies installed on the top of the lighthouse (1); The lighthouse (1) includes a main pole (17) and a sleeve (13) slidably fitted onto the main pole (17). At least three support rods (14) are rotatably mounted on the lower end of the main pole (17). One end of each support rod (14) is hinged to the main pole (17). A connecting rod (15) is hinged to the middle of each support rod (14). The end of the connecting rod (15) away from the support rod (14) is hinged to the sleeve (13). A locking bolt (16) that abuts against the main pole (17) is screwed onto the sleeve (13). A sliding roller (18) is also installed at the bottom of the main pole (17). Two mounting plates (19) for mounting the light body are provided at the top of the lighthouse (1). The lamp body is equipped with: The housing (10) has a mounting groove (11) on its surface, in which a light source assembly (20) is fixedly installed. The housing (10) has a circuit control module (2), a sensing module (3) that is communicatively connected to the circuit control module (2), and a voice module (4) that is communicatively connected to the sensing module (3). The voice module (4) includes a speaker (41), and the surface of the lamp body has a through hole (42) corresponding to the speaker (41). At least two lamp heads (5) are symmetrically arranged on both sides of the lamp body and electrically connected to the circuit control module (2); wherein, the circuit control module (2) is configured to synchronously control the lighting state of the lamp heads (5) and the prompt voice playback of the voice module (4) according to the trigger signal of the sensing module (3); the sensing module (3) adopts a radar wave sensor with a sensing angle covering 120-160 degrees; A light-blocking plate (30) is detachably covered at the opening end of the mounting groove (11). The light-blocking plate (30) has at least one distance indicator structure and multiple light-blocking elements (23) on one side surface facing the mounting groove. The distance indicator structure includes a digital symbol cutout groove (22). The digital symbol cutout groove is composed of seven straight light-transmitting grooves (321) forming an "8" shaped topology. The light-transmitting grooves (321) are connected to the interior of the mounting groove (11). The distance indicator structure also includes a unit symbol cutout groove (24) disposed on the adjacent side of the digital symbol cutout groove (22). The unit symbol cutout groove (24) forms a length unit identification display unit. The light-blocking component (23) is a light-blocking sheet that can be detachably inserted into the light-transmitting slot (321), forming a decimal number display unit of 0-9 by selectively blocking part of the light-transmitting slot.

2. The tunnel distance indicating device according to claim 1, characterized in that: The distance indication structure further includes a direction symbol cutout groove (25), and the unit symbol cutout groove (24) and the number symbol cutout groove (22) are arranged side by side along the extension direction of the direction symbol cutout groove (25).

3. The tunnel distance indicating device according to claim 2, characterized in that: The light-blocking plate (30) has two mirror-symmetrical distance indicator structures arranged horizontally side by side, and the direction symbol cutouts (25) of the two structures point in opposite directions; The light-blocking element (23) is inserted into the unit symbol slot (24), the direction symbol slot (25), and the number symbol slot (22) of one of the distance indication structures.

4. The tunnel distance indicating device according to any one of claims 1-3, characterized in that: The mounting slot (11) is provided with a light-diffusing plate (40) located between the light source assembly (20) and the light-blocking plate (30), and the light-diffusing plate is arranged parallel to the light-emitting surface of the light source assembly; wherein the light source assembly (20) is electrically connected to the circuit control module (2).

5. The tunnel distance indicating device according to claim 4, characterized in that: The mounting groove (11) has an annular positioning groove (12) circumferentially arranged on the inner wall. The edge of the light-diffusing plate (40) is embedded in the positioning groove and is axially fixed by pressing the light-blocking plate (30).

6. The tunnel distance indicating device according to claim 5, characterized in that: The depth of the annular positioning groove (12) is greater than the thickness of the light-diffusing plate (40), forming a gap space to accommodate the thermal expansion of the light-diffusing plate.

7. The tunnel distance indicating device according to any one of claims 1-3, characterized in that: The light-blocking plate (30) has outwardly extending mounting wing plates (26) on its opposite sides, and the mounting wing plates have mounting holes for connecting with the mounting plate.

8. The tunnel distance indicating device according to claim 7, characterized in that: The light-blocking plate (30) has limiting flanges (27) on both sides. The mounting wing plate (26) and the limiting flanges (27) together form a locking structure surrounding the periphery of the housing (10).

9. The tunnel distance indicating device according to any one of claims 1-3, characterized in that: The light-blocking plate (30) is detachably connected to the housing (10) by a circumferentially distributed bolt assembly, with the bolt holes avoiding the light-transmitting groove (321).

10. The tunnel distance indicating device according to claim 1, characterized in that: The circuit control module (2) includes: a battery module (124), a transformer module (125) connected to the mains power, a conversion circuit module (121) electrically connected to the transformer module (125) and the battery module (124) respectively, a charging circuit module (122) connected between the conversion circuit module (121) and the battery module (124); and a discharge circuit module (123) connected between the battery module (124) and the lamp head (5).

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