Tunnel lighting lamp

Abstract

A kind of tunnel lighting, including lamp body, the lamp body includes lampshade, several illuminating bodies can emit light are arranged in lampshade, the end face corresponding with adjacent lamp body is respectively first splicing surface and second splicing surface along the width direction of lamp body, the positioning hole and positioning piece that first splicing surface and second splicing surface are respectively provided with can be mutually matched to fixed adjacent lamp body, the positioning piece can retract to flush with second splicing surface after splicing.The beneficial effects of the utility model are: by positioning piece design is in splicing after can retract to flush with second splicing surface, effectively eliminates the interference of the protruding part of traditional splicing type tunnel lighting at two ends to mounting point, to improve the matching degree of lamp strip overall and tunnel top pre-design mounting point, simplifies assembly process and enhances the stability after installation.

Description

Technical Field

[0001] This utility model relates to a lighting fixture, and more particularly to a tunnel lighting fixture. Background Technology

[0002] In long tunnel lighting systems, modular tunnel lights are widely used to meet the need for continuous and uniform illumination, especially in scenarios such as highways, railways, or underground tunnels. These lights are typically designed as modular units, each with plug-in holes and connectors on its end face for quick connection to adjacent lights. During installation, workers first align the connectors and insert them into the plug-in holes of another unit to achieve initial alignment. They are then locked together using bolts, clips, or other fixing devices to form a seamless lighting strip. This modular approach simplifies the construction process, reduces on-site work time, and allows for flexible layout adjustments based on tunnel length, thereby improving lighting efficiency and reducing maintenance difficulty. The entire process emphasizes modularity and standardization, ensuring that the lighting system can adapt to various tunnel environments and provide stable light coverage.

[0003] However, existing modular tunnel lighting systems have a significant drawback: after assembly, the units at both ends of the light strip protrude with connectors that do not mate with the insertion holes. These excess protrusions cause the overall light strip to mismatch with the pre-designed installation points on the tunnel ceiling, resulting in assembly difficulties or insufficient stability. Specifically, the protruding connectors may interfere with the connection of the fixing brackets, preventing the light strip from being securely installed. This can lead to loosening, vibration, or even detachment, affecting the long-term reliability of the lighting system and increasing the cost of subsequent adjustments and maintenance. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tunnel lighting lamp that solves the installation mismatch problem caused by the protrusion of the positioning component after splicing.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a tunnel lighting lamp, comprising a lamp body, the lamp body including a lamp cover, wherein a plurality of luminous illumination bodies are arranged inside the lamp cover, and the two end faces of the lamp body along its width direction corresponding to adjacent lamp bodies are respectively a first splicing surface and a second splicing surface, wherein the first splicing surface and the second splicing surface are respectively provided with positioning holes and positioning elements that can cooperate with each other to fix adjacent lamp bodies, and the positioning elements can be retracted to be flush with the second splicing surface after splicing.

[0006] The beneficial effects of this utility model are as follows: By designing the positioning component to retract to be flush with the second splicing surface after splicing, the interference of the protruding parts at both ends of the traditional spliced ​​tunnel lighting lamps on the installation point is effectively eliminated, thereby improving the matching degree between the overall light strip and the pre-designed installation point on the tunnel top, simplifying the assembly process, and enhancing the stability after installation. This design reduces the risk of loosening, vibration, or detachment caused by protruding parts, thereby improving the long-term reliability of the lighting system and reducing the frequency and cost of subsequent adjustments and maintenance. In addition, the retraction mechanism allows for flexible adjustment of the light strip end after splicing to adapt to different installation environments, avoiding the trouble of disassembly. As a preferred method, the positioning component can use a built-in slider mechanism to achieve the retraction function. The specific structure includes a sliding rod connected to the positioning component, with a spring-loaded buckle on the rod. When splicing, the buckle engages and fixes with the groove in the positioning hole. After splicing, the spring is released by triggering an external button, causing the sliding rod to drive the positioning component to retract to the flush position. This mechanism controls the sliding through the elastic force of the spring, ensuring that the positioning component moves smoothly when needed and will not pop out accidentally. As another preferred method, the positioning component can be integrated with an electromagnetic drive assembly. Through the cooperation of the coil and the magnetic core, a magnetic force is generated when the power is on to pull the positioning component inward. After the power is off, the return spring restores it to its original state, thereby realizing a rapid retraction operation under remote or automatic control. This is suitable for large lighting systems that require frequent adjustments.

[0007] Furthermore, the second splicing surface is provided with an assembly hole for placing the positioning component. The positioning component is cylindrical and is provided with a telescopic positioning device. The telescopic positioning device includes a positioning post and a control component. The positioning post protrudes from the outer surface of the positioning component and can be extended or retracted by the control component. The inner wall of the assembly hole is provided with a spiral channel corresponding to the positioning post, which allows the positioning post to move up and down spirally within it. The spiral channel is provided with a stroke hole that cooperates with the positioning post at both the end and the opening end of the assembly hole. The depth of the spiral channel is less than the depth of the stroke hole.

[0008] This structure, through the cooperation of a spiral track and stroke holes, allows the positioning post to rise and fall along a spiral path during splicing, achieving precise positioning and reliable fixation. Simultaneously, during retraction, a control mechanism ensures the positioning post moves smoothly to be flush with the second splicing surface, avoiding the abrupt protrusion of traditional plug-in connectors, thus improving installation convenience and the overall stability of the light strip. The spiral track design allows the positioning post to gradually shift during rotation, reducing the possibility of sudden detachment and enhancing vibration resistance, making it suitable for long-term use in tunnel environments. Furthermore, the stroke holes provide initial and final position locking for the positioning post, further optimizing splicing accuracy. As a preferred embodiment, the telescopic positioning device may include a worm gear mechanism linked to the positioning post, where the control mechanism acts as an input shaft driving the worm gear to rotate. The worm gear, through engagement, moves the positioning post along the spiral track, achieving precise telescopic control. This mechanism uses the worm gear's self-locking characteristic to prevent reverse movement, ensuring the positioning post will not accidentally shift in its fixed position. As another preferred approach, the positioning column can be designed as a sliding assembly with balls embedded in the spiral track to reduce friction. The control component is connected to the positioning column via a linkage. During operation, pulling or pushing the linkage allows the positioning column to smoothly rise and fall within the spiral track, thereby maintaining low noise and high efficiency during splicing and retraction.

[0009] Furthermore, the positioning component has a mounting hole at its center for inserting the control component. The control component has a wedge-shaped head in the mounting hole facing the positioning post. The positioning post has a mating inclined surface facing the wedge-shaped head. The telescopic positioning device also includes a return spring disposed in the mounting hole and used to drive the control component to move towards the positioning post. One end of the return spring abuts against the mounting hole, and the other end abuts against the control component.

[0010] The combination of the positioning post, wedge head, and mating inclined surface enables synchronous extension and retraction of the positioning post during the movement of the control component. This ensures uniform force distribution and avoids wear or failure caused by stress concentration on one side, thereby improving the stability and durability of the assembly. The addition of a return spring allows the control component to automatically reset, simplifying the operation process and reducing human error, making it suitable for rapid assembly and disassembly scenarios. This structure achieves efficient force transmission through mechanical linkage, maintaining reliable fixation even in vibration environments. As a preferred approach, the wedge head can be designed in a multi-faceted pyramid shape, forming surface contact with the corresponding inclined surface of the positioning post. When the control component is pulled upward, the wedge head transmits force to the positioning post through the inclined surface, forcing it to retract inward. After release, the return spring pushes the control component back to its original position, causing the positioning post to extend. The entire process optimizes the lever arm through the inclined surface angle, achieving smooth movement. As another preferred method, a guide groove can be set in the mounting hole, and the rod of the control component slides along the groove to ensure precise alignment between the wedge head and the inclined surface of the positioning post. At the same time, the reset spring is a helical spring fixed to the bottom of the control component, which provides continuous rebound force through compression and release, making the extension and retraction action more controllable and consistent.

[0011] Furthermore, the control component includes a rod portion disposed within the mounting hole and cooperating with the positioning post, and a head portion disposed outside the mounting hole and having an outer diameter equivalent to that of the positioning component. An annular elastic ring is embedded on the outer surface of the head portion, and a tightening ring groove is disposed within the positioning hole corresponding to the annular elastic ring and cooperating with it. The inner diameter of the tightening ring groove is smaller than the outer diameter of the elastic ring.

[0012] The engagement of the annular elastic ring and the expansion ring groove provides additional radial pressure, enhancing the fixing force between the positioning element and the positioning hole, effectively preventing loosening under tunnel vibration or temperature changes, thereby improving the overall connection's robustness and safety. The head is designed to be approximately the same diameter as the positioning element's outer diameter, ensuring a flat appearance and avoiding unnecessary protrusions. Simultaneously, the elastic ring is compressed upon insertion into the expansion ring groove, generating a self-tightening effect, simplifying the installation process and reducing maintenance requirements. This structure is suitable for high-vibration environments and can maintain splicing stability over long periods. As a preferred option, the annular elastic ring can be made of polyurethane material, which has high elasticity and wear resistance. The head is designed with a tapered transition for easy insertion into the expansion ring groove. When the control element head enters the expansion ring groove, the elastic ring is compressed and deformed, filling the gap in the hole wall, and its rebound force generates a continuous tightening effect, achieving mechanical interlocking. As another preferred method, the inner wall of the expansion ring groove can be provided with an annular groove, and the elastic ring is inserted into the groove after insertion to form a double fixation; the control rod and the positioning column are connected by a thread, and the compression degree of the elastic ring is adjusted when the head is rotated, so as to flexibly adjust the fixing force and adapt to different splicing tightness requirements.

[0013] Furthermore, the first splicing surface and the second splicing surface are symmetrically provided with fixing ears and fixing grooves on both sides along the length direction of the lamp body. The fixing ears protrude from the end face of the first splicing surface along the width direction of the lamp body, and one end face of the fixing ear along the length direction of the lamp body is flush with the end face of the lamp body along the length direction. The thickness of the fixing ear is equivalent to the depth of the fixing groove. A fastening hole for splicing is provided at the center of the fixing ear and the fixing groove.

[0014] The symmetrical arrangement of the fixing ears and fixing slots, along with their guiding function during splicing, simplifies the lamp body alignment process, improves splicing accuracy and efficiency, and allows for further reinforcement of the connection using additional fasteners, enhancing the overall structural stability and load-bearing capacity. The design where the thickness of the fixing ears is comparable to the depth of the fixing slots ensures a tight fit, reducing the risk of loosening due to gaps, and is suitable for irregular installation surfaces at the top of tunnels. This structure, through mechanical interlocking and guiding functions, reduces assembly difficulty and improves the reliability of the light strip during long-term use. As a preferred option, the fixing ears can be designed as trapezoidal structures with bevels, mate with the corresponding bevels of the fixing slots, automatically guiding alignment during insertion and enhancing initial fixation through the wedge-tightening effect created by the bevels; the pre-threaded fixing holes can be used with bolts to tighten after splicing for additional tensile strength. As another preferred method, an elastic gasket can be placed in the fixing groove. When the fixing ear is inserted, the gasket is compressed to produce a buffering and sealing effect, reducing vibration transmission. The fastening hole adopts a through hole design, which facilitates the installation of pins or screws from the outside, realizing a quick and detachable connection, suitable for tunnel lighting systems that require frequent maintenance. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the tunnel lighting lamp according to an embodiment of the present utility model; Figure 2 for Figure 1 A partially enlarged view of the mating of the positioning component and the positioning hole; Figure 3 This is a partial cross-sectional view of the positioning hole in an embodiment of the present invention; Figure 4 This is a partial cross-sectional view of the mating point between the positioning post and the control component in an embodiment of this utility model. Detailed Implementation

[0016] This utility model embodiment provides a tunnel lighting lamp, such as... Figure 1-4As shown: The lamp includes a lamp body 1, on which a lampshade 11 is provided. Several luminous elements (not shown) are arranged inside the lampshade 11. These luminous elements (not shown) can be LED beads or other common light sources. The lamp body 1 has a first splicing surface 13 and a second splicing surface 14 on its two sides along its width direction, corresponding to adjacent lamp bodies. The first splicing surface 13 has a positioning hole 131, and the second splicing surface 14 has a positioning member 141. The positioning member 141 can retract to be flush with the second splicing surface 14 for easy installation. The second splicing surface 14 has an assembly hole 143 for inserting the positioning member 141. The positioning member 141 is cylindrical and has a telescopic positioning device 15. The telescopic positioning device 15 includes a positioning post 151 and a control member 152. The positioning post 151 protrudes from the outer surface of the positioning member 141 and can be telescopically moved by the control member 152. A spiral channel 1431 is provided on the inner wall of the assembly hole 143 corresponding to the positioning post 151. The spiral channel 1431 has a stroke hole 1432 at both the end and the open end of the assembly hole 143. The depth of the spiral channel 1431 is less than the depth of the stroke hole 1432 to realize the spiral lifting and lowering of the positioning post 151.

[0017] The positioning post 151 is located at the bottom of the positioning member 141. The control member 152 has a mounting hole 1411 at its center for insertion. The control member 152 has a wedge head in the mounting hole 1411 facing the positioning post 151. The positioning post 151 has a mating inclined surface facing the wedge head. The telescopic positioning device 15 also includes a return spring 153 located in the mounting hole 1411 and used to drive the control member 152 to move towards the positioning post 151. The control component 152 includes a rod 1521 disposed in the mounting hole 1411 and cooperating with the positioning post 151, and a head 1522 disposed outside the mounting hole 1411 and having an outer diameter equivalent to that of the positioning component 141. An annular elastic ring 1523 is embedded on the outer surface of the head 1522. A tightening ring groove 1313 is provided in the positioning hole 131 corresponding to the annular elastic ring 1523, and the inner diameter of the tightening ring groove 1313 is smaller than the outer diameter of the annular elastic ring 1523 to enhance the fixing effect.

[0018] The first splicing surface 13 and the second splicing surface 14 are respectively provided with fixing ears 132 and fixing grooves 142 on both sides along the length direction of the lamp body 1. The fixing ears 132 protrude from the end face of the first splicing surface 13 along the width direction of the lamp body 1, and one end face of the fixing ears 132 along the length direction of the lamp body 1 is flush with the end face of the lamp body 1 along the length direction. The thickness of the fixing ears 132 is equivalent to the depth of the fixing grooves 142. The center of the fixing ears 132 and the fixing grooves 142 is provided with fastening holes 1421 that can be spliced.

[0019] During assembly, the fixing lug 132 of one lamp body is first inserted into the fixing groove 142 of the adjacent lamp body, aligning the fastening hole and 1421 and fixing it with bolts. The two work together to guide and initially position the lamp body. During this process, the positioning member 141 is inserted into the positioning hole 131, and the positioning pin 151 is engaged in the stroke hole 1432 at the open end of the assembly hole 143, so that the positioning member 141 protrudes from the second splicing surface 14 to fix the adjacent lamp body. After the lighting unit of sufficient length is assembled, for the exposed positioning parts 141 at both ends of the light strip that are not involved in the splicing, by pulling the head 1522 of the control part 152, the wedge head drives the positioning post 151 to retract and disengage from the stroke hole 1432. Then, the positioning part 141 is rotated, and the positioning post 151 spirals down along the spiral path 1431. Finally, the positioning post 151 re-engages into the stroke hole 1432 at the end of the assembly hole 143. At this time, the positioning part 141 retracts to be flush with the second splicing surface 14, which facilitates the installation of the lighting unit to the top of the tunnel. The annular elastic ring 1523 cooperates with the expansion ring groove 1313 to provide additional fastening force and prevent loosening.

[0020] The above embodiments are merely one preferred embodiment of the present utility model. Ordinary changes and substitutions made by those skilled in the art within the scope of the present utility model's technical solution are all included within the protection scope of the present utility model.

Claims

1. A tunnel lighting lamp, comprising a lamp body, the lamp body including a lamp cover, wherein a plurality of luminous illumination elements are arranged inside the lamp cover, and the two end faces of the lamp body along its width direction corresponding to adjacent lamp bodies are respectively a first splicing surface and a second splicing surface, wherein the first splicing surface and the second splicing surface are respectively provided with positioning holes and positioning elements that can cooperate with each other to fix adjacent lamp bodies, characterized in that: The positioning element can be retracted to be flush with the second splicing surface after splicing.

2. The tunnel lighting lamp according to claim 1, characterized in that: The second splicing surface is provided with an assembly hole for placing a positioning component. The positioning component is cylindrical and is provided with a telescopic positioning device. The telescopic positioning device includes a positioning post and a control component. The positioning post protrudes from the outer surface of the positioning component and can be extended or retracted by the control component. The inner wall of the assembly hole is provided with a spiral channel corresponding to the positioning post, which allows the positioning post to move up and down spirally within it. The spiral channel is provided with a stroke hole that mates with the positioning post at both the end and the opening end of the assembly hole. The depth of the spiral channel is less than the depth of the stroke hole.

3. The tunnel lighting lamp according to claim 2, characterized in that: The positioning component has a mounting hole at its center for inserting the control component. The control component has a wedge-shaped head in the mounting hole facing the positioning post. The positioning post has a mating inclined surface facing the wedge-shaped head. The telescopic positioning device also includes a return spring disposed in the mounting hole and used to drive the control component to move towards the positioning post. One end of the return spring abuts against the mounting hole, and the other end abuts against the control component.

4. The tunnel lighting lamp according to claim 2, characterized in that: The control component includes a rod portion disposed in the mounting hole and cooperating with the positioning post, and a head portion disposed outside the mounting hole and having an outer diameter equivalent to that of the positioning component. An annular elastic ring is embedded on the outer surface of the head portion, and a tightening ring groove is disposed in the positioning hole corresponding to the annular elastic ring and cooperating with it, wherein the inner diameter of the tightening ring groove is smaller than the outer diameter of the elastic ring.

5. The tunnel lighting lamp according to claim 1, characterized in that: The first splicing surface and the second splicing surface are respectively symmetrically provided with fixing ears and fixing grooves on both sides along the length direction of the lamp body. The fixing ears are provided to protrude from the end face of the first splicing surface along the width direction of the lamp body, and one end face of the fixing ear along the length direction of the lamp body is flush with the end face of the lamp body along the length direction. The thickness of the fixing ear is equivalent to the depth of the fixing groove. A fastening hole for splicing is provided at the center of the fixing ear and the fixing groove.

Images