Train passenger room lamp strip structure

Abstract

The train passenger room lamp strip structure comprises a clamping type lampshade and an adjustable protection assembly arranged at the end of the clamping type lampshade, and the protection assembly is embedded in an opening in the end of the lampshade and provided with an adjusting part which can be bent or move when pressed. According to the two preferable schemes, one scheme is that an integrated elastic blade framework and protective blades with movable gaps and lap joint steps are adopted, and the blades can be close to each other along with elastic deformation of the framework; secondly, the two protection end plates are movably connected, an insertion structure with variable matching length is arranged between the two protection end plates, and the two schemes both enable the adjusting component to deform or relatively move when being stressed to be matched with the size of an opening in the end of the lampshade in a self-adaptive mode, so that the protection assembly adopting the technical scheme can be compatible with dimensional tolerances of lampshades of different batches, and the production efficiency is improved. The extrusion and collision damage is effectively avoided, the protection performance and adaptability are improved, the reliability of the lamp is remarkably improved, and the service life of the lamp is remarkably prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of railway train lighting, in particular to a train passenger room lamp strip structure. BACKGROUND

[0002] The passenger room lamp of the existing railway train usually adopts a long strip-shaped lamp strip, and the passenger room lamp meets the passenger room lighting requirements in the railway train. The passenger room lamp mainly comprises a lamp body and a lampshade. The lamp body is provided with a lamp source part facing the lampshade. The lampshade is in an arc shape and surrounds the periphery of the lamp source to achieve light collection and dust prevention, and can also prevent electric shock and protect the eyes. At present, the arc lampshade for the railway train is generally installed in an integral wrapping manner with the lamp body, and the two ends of the lampshade structure are usually designed as exposed end plates. The end plates need to be fixed at the two ends of the lampshade by buckling or screwing. In this way, the dustproof, insect-proof and sealing effects of the end part of the lampshade can be achieved. However, in actual use, due to the installation size difference in the installation process of the lampshade or the deformation caused by thermal expansion and cold contraction, the exposed end plate is prone to extrusion with the lampshade, and even the end plate and the lampshade are broken, causing damage to the lampshade structure, resulting in light leakage and abnormal light efficiency of the passenger room lamp, and affecting the service performance and service life of the product. SUMMARY

[0003] Therefore, the technical problem to be solved by the present application is to overcome the problem that the lampshade in the prior art is extruded with the exposed end plate due to the installation size difference in the installation process or the deformation caused by thermal expansion and cold contraction, causing damage to the lampshade structure, affecting the service performance and service life of the product.

[0004] To solve the above problems, the present application provides a train passenger room lamp strip structure, which comprises a clamping lampshade installed on a lamp body and an adjustable protection assembly arranged at the end of the clamping lampshade. The adjustable protection assembly has a mounting portion fixedly connected with the lampshade and at least one adjustable component which can be bent or moved under pressure. The adjustable protection assembly is embedded in the opening of the end of the lampshade, and the outer edge of the profile is fitted with or has a gap with the inner wall of the end of the lampshade to achieve the embedded shielding of the opening of the end of the lampshade. The adjustable component deforms or moves relatively when it and the protection assembly are under stress to adapt to the size of the opening of the end of the lampshade.

[0005] As a preferred scheme, the adjustable protection assembly comprises a mounting carrier fitted with the inner wall of the end of the lampshade. The inner side of the mounting carrier is spaced apart along the length direction and provided with a plurality of protection blades. The plurality of protection blades constitute the bendable adjustable component. The mounting carrier is configured as an integral blade skeleton which can be elastically deformed under pressure, so that the plurality of protection blades are pressed and connected to each other by the elastic deformation of the blade skeleton.

[0006] As a preferred solution, the adjusting component comprises a plurality of active gaps formed between the guard vanes, the active gaps being configured to allow the relative displacement of the guard vanes when the vane skeleton is bent, the width of the active gaps being reduced or increased with the relative displacement of the adjacent two guard vanes.

[0007] As a preferred solution, one or both sides of the guard vane are formed with a lap joint, so that the plurality of guard vanes can achieve bidirectional lap joint and displacement adaptation when the skeleton is bent, the adjacent two guard vanes are in partial overlap and lap joint through the lap joint, and the overlap area formed by the lap joint adaptively changes with the bending angle of the vane skeleton.

[0008] As a preferred solution, the lap joint is a lap joint step formed on the side of the guard vane and extending towards the adjacent guard vane, the lap joint steps of the adjacent two guard vanes are arranged in staggered opposition to form a partial overlap and lap joint, and the active gap allowing the relative movement of the guard vanes is formed between the adjacent two guard vanes by the staggered limiting step, and the plurality of guard vanes are abutted and matched with each other through the respective lap joint steps when the skeleton is elastically deformed under pressure.

[0009] As a preferred solution, the lap joint step comprises a lap joint surface and a stop surface connected in an L-shaped structure, when the lap joint surfaces of the adjacent two guard vanes overlap, the stop surface of one of the guard vanes abuts against the corresponding side edge of the other adjacent guard vane to limit the excessive relative movement between the adjacent guard vanes.

[0010] As a preferred solution, the adjustable guard assembly comprises two guard end plates connected movably, and an insertion structure is arranged between the two guard end plates to realize the relative movement, the two guard end plates cooperatively form the movable adjusting component, and the outer contours of the two guard end plates cooperatively form a curved surface structure matching the inner wall of the end portion of the lampshade.

[0011] As a preferred solution, the guard end plates are pivotally connected through a connecting piece, the connecting piece is formed as a force fulcrum for the relative rotation of the two guard end plates, the two guard end plates rotate relative to each other with the connecting piece as the center of rotation under force, the connecting piece is a pivot shaft arranged on both sides of one of the guard end plates, and the other guard end plate is provided with a rotation shaft hole matched with the pivot shaft.

[0012] As a preferred solution, the insertion structure comprises an insertion protrusion arranged at one end of one of the guard end plates, and an insertion groove arranged in the other guard end plate and matched with the insertion protrusion, the other guard end plate is provided with an arc-shaped transition edge connected to the lower side of the insertion protrusion, and the matching length of the insertion protrusion and the insertion groove changes synchronously with the relative bending angle of the two guard end plates.

[0013] As a preferred solution, the two protective end plates comprise two end plate skeletons with an outer contour matching the inner wall arc surface of the card-shaped lampshade, the end plate skeletons are arranged along the edges of the protective end plates and integrally formed or fixedly connected with the protective end plates, one end of the two end plate skeletons is provided with two joint parts arranged in a staggered structure at the joint of the two protective end plates, and the direction of the staggered joint parts matches the relative movement direction of the two protective end plates.

[0014] As a preferred solution, the mounting part comprises two mounting legs arranged at the edges of the two ends of the adjustable protective assembly, two guide clamping grooves are formed between the two mounting legs and the protective assembly and are matched with the guide protrusions on the two sides of the lampshade, the mounting leg is in a sheet structure and integrally formed on the end edge of the blade skeleton or the end plate skeleton, and the mounting leg is provided with a mounting hole, a buckle structure or a gluing structure for matching and fixedly connecting with the corresponding mounting position of the lampshade.

[0015] Compared with the prior art, the technical scheme of the present application has the following advantages: 1. In the train passenger room lamp strip structure provided by the present application, the protective assembly is embedded in the opening of the end of the lampshade, the contour of the protective assembly is matched with the inner wall of the opening of the lampshade, and the protective assembly can be deformed or relatively moved when the adjusting part is stressed to dynamically adapt to the size of the opening of the lampshade. This structural design has the following advantages: on the one hand, when the size or shape of the lampshade changes due to installation tolerance or thermal expansion and contraction, the embedded protective assembly can adjust the position through the adjusting part, and the adjusting part can absorb and adapt to the size or shape change through its elastic deformation or relative movement, thereby fundamentally avoiding the squeezing phenomenon between the end plate and the lampshade caused by installation size difference or thermal expansion and contraction, and ensuring the integrity of the lamp structure; on the other hand, the protective assembly has self-adaptive adjustment capability, and during installation, it is not necessary to accurately align or apply excessive assembly stress to match the possible size deviation, thereby avoiding the squeezing force during installation to cause damage to the lampshade / end plate, reducing the installation difficulty and the requirement for the skill of the operator, which makes the protective assembly compatible with the size tolerance of different batches of lampshades, has good installation versatility, and can better adapt to long-term size fluctuation caused by vibration and temperature difference during train operation, thereby significantly improving the environmental adaptability and service life of the product.

[0016] 2. The train passenger compartment lamp strip structure provided by the present application, the protection assembly adopts the combined design of an integrated blade skeleton and multiple protection blades, realizing a highly adaptive embedded protection structure, the blade skeleton acts as an elastic carrier so that it can conform to the size fluctuation of the opening of the lampshade end, the multiple protection blades are sequentially and spacedly arranged on the blade skeleton and form movable gaps between each other, external force is evenly dispersed to each protection blade through the skeleton, avoiding local rupture caused by stress concentration, this structure arrangement, the blade skeleton can elastically deform when under pressure, and drive the multiple protection blades to move cooperatively, by the multiple protection blades moving closer to each other and being pressed and abutted together with the skeleton deformation, a continuous shielding surface is formed, and the blade skeleton and the inner wall of the lampshade are kept in close contact, thereby dynamically maintaining or enhancing the sealing effect and shielding effect, effectively preventing dust, insects from invading and light leakage, this design can adapt to the size change of the lampshade under various working conditions such as installation error, thermal expansion and contraction, vibration, etc., and always effectively shields the end of the lampshade, this optimized design has the advantages of more reliable structure, more accurate adaptation, and more comprehensive protection.

[0017] 3. The train passenger compartment lamp strip structure provided by the present application, according to the two sides of each protection blade, a lap joint part is formed, the lap joint part is a lap joint step extending to the adjacent blade, and the lap joint steps are partially overlapped by being oppositely arranged, the overlapping lap joint surface can block the invasion of dust, insects, water vapor and other foreign matters from the blade gap into the lamp body, the advantages of this structure design are that, first, through the bidirectional lap joint design, when the blade skeleton bends in any direction, the adjacent blades can be matched through the lap joint part, and the situation of single-sided lap joint falling off does not occur, the overlapping area formed by the lap joint changes adaptively with the bending angle of the skeleton under stress, and the adaptation is more comprehensive; secondly, through the staggered design of the lap joint step, the movable gap allowing the relative movement of the blades is reserved, and the limiting effect of the lap joint step is utilized, when the bending amplitude of the skeleton reaches the limit under pressure, the end surfaces of the lap joint steps will be tightly pressed against each other, forming mechanical limiting to prevent excessive deformation of the blades, and the adjacent blades form a network structure by being pressed and abutted through the lap joint steps, greatly improving the overall deformation resistance and overall structure rigidity.

[0018] 4. The train passenger compartment lamp strip structure provided by the present application adopts a movable hinged double protection end plate structure for the adjustable protection assembly, and the outer contours of the two protection end plates jointly form a curved surface structure that is adapted to the inner wall of the end portion of the lampshade, thereby strengthening the shielding effect, optimizing the light efficiency and protection performance, effectively preventing dust and insects from invading and light from leaking, and the relative movement of the two protection end plates is realized through a plug-in structure, which provides stable guiding movement for the relative movement of the two protection end plates, and the relative movement has a wider adaptation range and can accurately adapt to the size or shape changes of the lampshade caused by installation tolerances or thermal expansion and contraction, thereby avoiding hard contact and collision between the rigid end plate and the lampshade, and the protection end plate itself has a certain rigidity and has stronger impact resistance and deformation resistance than elastic blades, the protection assembly designed with this structure has more stable and reliable movement control with fewer movable parts, and has good structural strength and adaptability to large size fluctuations while taking into account the shielding and light efficiency stability.

[0019] 5. In the train passenger compartment lamp strip structure provided by the present application, the two protection end plates rotate relative to each other around the connecting piece as the center when subjected to force, can accurately fit the curved contour of the inner wall of the end portion of the lampshade, and the plug-in structure of the two protection end plates adopts an embedded design of plug-in protrusions and plug-in grooves, the cooperation length of the two is increased, the overlapping sealing surface is larger, and stable guiding is provided for the rotation of the protection end plate. Regardless of the angle at which the two end plates rotate relative to each other, the plug-in structure always ensures that the two are tightly engaged at the joint, forming a seamless and continuous barrier, effectively eliminating the possibility of a straight-through gap at the joint, and can well adapt to the size changes of the lampshade under various working conditions such as installation error, thermal expansion and contraction, vibration, etc., and always effectively shields the end portion of the lampshade. This structural design of the protection end plate takes into account the structural strength and smoothness of operation through precise rotational movement and dynamic engagement mechanism, while realizing self-adaptive adjustment, it ensures that the protection assembly has excellent shielding and light efficiency stability during the adjustment process and in any static position.

[0020] 6. In the train passenger compartment lamp strip structure provided by the present application, when installing the protection assembly, only the guide slot needs to be aligned with the guide convex edge and slid in, so that the accurate pre-positioning and preliminary fixing of the protection assembly can be realized. According to the shape matching of the guide slot and the guide convex edge, it is ensured that the protection assembly can only be embedded into the end portion of the lampshade in a unique correct direction and position, effectively preventing reverse or misaligned installation. This structure uses the guide convex edge to form a guide rail type positioning after being embedded into the guide slot, and does not need to be repeatedly adjusted during installation, greatly improving the assembly efficiency. The cooperation of the slot and the convex edge limits the position deviation of the protection assembly, ensuring that the protection assembly is always in the center position of the opening of the end portion of the lampshade. Finally, the installation foot is fixed to the corresponding installation position of the lampshade through screws or buckles, etc., to ensure the sealing and light efficiency stability of the embedded shielding, and avoid light leakage or sealing failure caused by installation deviation. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the specific embodiments or the prior art of the present application, the drawings required to be used in the specific embodiments or the prior art description will be briefly introduced as follows.

[0022] Figure 1 Structure schematic view of train passenger room lamp strip structure in embodiment 1 of the present application; Figure 2 Structure schematic view of the protection assembly shown in embodiment 1; Figure 3 Local enlarged structure schematic view of the protection blade of the present application; Figure 4 Structure schematic view of train passenger room lamp strip structure in embodiment 2 of the present application; Figure 5 Structure schematic view of the protection assembly shown in embodiment 2; Figure 6 Structure schematic view of the protection assembly shown in embodiment 2 in another direction; Figure 7 Structure schematic view of the protection assembly shown in embodiment 2 in another direction;

[0023] Explanation of reference numerals: 100, protection assembly; 200, adjusting component; 1, protection blade; 11, lap joint part; 12, lap joint surface; 13, stop surface; 2, blade framework; 3, movable gap; 4, protection end plate; 41, connecting piece; 42, rotating shaft hole; 5, end plate framework; 51, joint part; 6, plug-in structure; 61, plug-in protrusion; 62, plug-in groove; 63, arc-shaped transition edge; 7, mounting part; 8, guide clamping groove; 9, lampshade; 91, guide protruding edge. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0025] In the description of the present application, it should be noted that the terms “first”, “second”, “third” are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "linking" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict.

[0028] Embodiment 1 The present embodiment will be specifically described below in conjunction with the accompanying drawings: The present embodiment provides a train passenger room lamp strip structure as shown in Figures 1-7 The train passenger room lamp strip structure comprises a lamp shade 9 mounted on a lamp body and an adjustable protection assembly 100 arranged at the end of the lamp shade 9. The adjustable protection assembly 100 has a mounting portion 7 fixedly connected with the lamp shade 9 and at least one adjustable component 200 which is bendable or movable under pressure. The adjustable protection assembly 100 is embedded in the opening at the end of the lamp shade 9, and the outer edge of the profile of the adjustable protection assembly 100 is fitted with the inner wall of the end of the lamp shade 9 to achieve the embedded shielding of the opening at the end of the lamp shade 9. The mounting portion 7 provides reliable fixed support for the protection assembly 100, ensuring that the protection assembly 100 will not be loosened or displaced due to the movement of the adjustable component 200. The adjustable component 200 deforms or moves relatively when it and the protection assembly 100 are subjected to force to adapt to the size of the opening at the end of the lamp shade 9. This embedded design makes the main body of the protection assembly 100 located in the port of the lamp shade 9, and the outer edge of the main body is closely fitted with the inner wall of the lamp shade or maintains a controllable gap, forming a barrier inside the opening of the lamp shade. This structure can more effectively prevent dust, insects and the like from invading from the gap at the end of the lamp shade than the outer cover type end plate, and is not easy to be displaced and fail due to external impact, thereby improving the overall dustproof, insect-proof and sealing performance.

[0029] In the above embodiment, the protective component 100 is embedded in the opening at the end of the lampshade, so that its outline fits and contacts the inner wall of the lampshade port 9. The adjustable component 200 can deform / move relative to the opening size of the lampshade when subjected to force. This structural design has the following advantages: Firstly, when the lampshade changes in size or shape due to installation tolerances or thermal expansion and contraction, the embedded protective component 100 can adjust its position accordingly through the adjustable component 200. That is, the adjustable component 200 absorbs and adapts to this size or shape change through its own elastic deformation or relative movement, fundamentally avoiding the impact of installation size differences. The protective components prevent the end plate from being squeezed and impacted by thermal expansion and contraction, ensuring the structural integrity of the lamp. On the other hand, the protective components have self-adjusting capabilities, eliminating the need for extremely precise alignment or excessive assembly stress during installation to match potential dimensional deviations. This avoids damage to the lamp cover / end plate caused by squeezing pressure during installation, reducing installation difficulty and the skill requirements for operators. This allows the protective components to be compatible with the dimensional tolerances of different batches of lamp covers, providing good installation versatility and better adapting to long-term dimensional fluctuations caused by vibration and temperature differences during train operation, thereby significantly improving the product's environmental adaptability and service life.

[0030] The following is combined Figures 1-3 The specific setup method for adjustable protection components is explained in detail: In a preferred embodiment, the adjustable protective assembly 100 includes a mounting carrier that fits snugly against the inner wall of the end of the lampshade 9. A plurality of protective blades 1 are spaced apart along the length of the inner side of the mounting carrier. These protective blades 1 constitute the flexible adjustment component 200. The mounting carrier is constructed as an integral blade frame 2 capable of elastic deformation under pressure, allowing the multiple protective blades 1 to move closer together and press against each other as the blade frame 2 elastically deforms. External force is evenly distributed to each protective blade 1 through the blade frame 2, preventing localized breakage due to stress concentration. The adjustment component 200 includes multiple movable gaps 3 formed between the multiple protective blades 1. The movable gaps 3 are configured to allow relative displacement of the multiple protective blades 1 when the blade frame bends. The width of the dynamic gap 3 decreases or increases with the relative displacement of two adjacent protective blades 1. When the size of the protective component 100 adapted to the lampshade 9 decreases, several blades are pressed together, and the dynamic gap 3 between them decreases or even closes. When the size of the protective component adapted to the lampshade 9 increases, several blades regain elastic deformation and separate, and the dynamic gap 3 between them expands appropriately. In this way, the gap can be dynamically adjusted. The dynamic gap 3 provides the necessary movement space for the protective blades 1, ensuring that they do not interfere with each other when the frame bends. This design of the dynamic gap 3 enables the entire protective component to have adaptive fine-tuning capability. When the width of the lampshade opening changes due to manufacturing or thermal deformation, the blades can adjust the overall profile width by sliding or rotating within the gap range, accurately matching the opening size, and significantly improving the tolerance to manufacturing tolerances and installation errors.

[0031] The protective component of this embodiment preferably adopts a combination design of an integrated blade frame 2 and multiple protective blades 1, realizing a highly adaptive embedded protective structure. The blade frame 2 acts as an elastic carrier, allowing it to adapt to the size fluctuations of the opening at the end of the lampshade. Multiple protective blades 1 are sequentially and spaced apart on the blade frame 2, forming movable gaps 3 between each other. With this structural arrangement, the blade frame 2 can undergo elastic deformation under pressure, driving the multiple protective blades 1 to move in tandem. As the multiple protective blades 1 deform with the frame, they move closer together and press against each other, thus forming a continuous shielding surface. The blade frame 2 remains in close contact with the inner wall of the lampshade 9, thereby dynamically maintaining or enhancing the sealing effect and effectively preventing dust, insects, and light leakage. This design can adapt to the size changes of the lampshade under various working conditions such as installation errors, thermal expansion and contraction, and vibration, always maintaining effective shielding of the lampshade end. This optimized design has the advantages of more reliable structure, more precise adaptation, and more comprehensive protection.

[0032] like Figure 3As shown, one or both sides of the protective blade 1 are formed with overlapping portions 11, so that multiple protective blades 1 can achieve bidirectional overlapping and displacement adaptation when the frame is bent. Two adjacent protective blades 1 cooperate with each other through the overlapping portions 11 to form a partially overlapping and fitting overlapping state, and the overlapping area formed by the overlapping changes adaptively with the bending angle of the blade frame 2. Further preferably, the overlapping portion 11 is an overlapping step formed by extending the side of the protective blade 1 towards the adjacent protective blade 1. The overlapping steps of two adjacent protective blades 1 are staggered and arranged to form a partially overlapping and fitting overlapping fit, and the staggered limiting steps form an active gap 3 between the two adjacent protective blades 1 that allows the protective blades 1 to move relative to each other. When the frame is compressed and undergoes elastic deformation, several protective blades 1 abut against each other through their respective overlapping steps. This structural design, where multiple protective blades 1 overlap and fit together via overlapping surfaces 12, prevents foreign objects such as dust, insects, and moisture from entering the lamp body through the gaps between the blades. The advantages of this structural design are twofold: First, the bidirectional overlapping design ensures that when the blade frame 2 bends in any direction, adjacent blades can cooperate through the overlapping parts 11, preventing single-sided overlap from falling off. The overlapping area adapts to the bending angle of the frame under stress, providing a more comprehensive fit. Second, the staggered design of the overlapping steps retains the movable gap 3 that allows relative movement of the blades while utilizing the limiting effect of the overlapping steps. When the frame is subjected to pressure and bending to its limit, the end faces of the overlapping steps will press against each other, forming a mechanical limit to prevent excessive deformation of the blades. Furthermore, the overlapping steps, by pressing and fitting adjacent blades together, form a mutually supportive network structure, significantly improving the overall resistance to deformation. The staggered overlapping steps press against each other when multiple blades are under pressure, providing additional support for vulnerable edges, preventing breakage, and improving the overall structural rigidity.

[0033] For further optimization settings, refer to Figure 3The overlapping step includes an L-shaped overlapping surface 12 and a stop surface 13 connected together. When the overlapping surfaces 12 of two adjacent protective blades 1 overlap and coincide, the stop surface 13 of one protective blade 1 abuts against the corresponding side of the other adjacent protective blade 1 to limit excessive relative movement between the adjacent protective blades 1. This overlapping step adopts an integrated L-shaped design with overlapping surface 12 sealing and stop surface 13 limiting, so that two adjacent protective blades 1 provide a stable overlapping and fitting surface through overlapping surface 12 to ensure sealing continuity, and can also define a safety boundary for the relative movement of adjacent blades through stop surface 13. Especially when multiple protective blades slide relative to each other due to the bending of the frame, and the overlapping surfaces 12 are fully overlapped, the stop surface 13 will abut against the side of the adjacent blade to prevent excessive displacement. This structural design of the overlapping step integrates three major functions: sliding guidance, overlapping sealing, and mechanical limiting. It can accurately control the maximum relative displacement of adjacent blades and avoid the overlapping surfaces from separating, the blades from lateral misalignment, or the frame from excessive deformation due to excessive displacement.

[0034] Example 2 Although the adjustable protective assembly 100 in Embodiment 1 preferably adopts a combined structure design of multiple protective blades and an elastic frame, it is obvious that other different configurations are also possible. Figures 4-7 As shown, the adjustable protective component 100 provided in this embodiment includes two movably connected protective end plates 4, and a plug-in structure 6 is provided between the two protective end plates 4 to achieve relative movement. The two protective end plates 4 cooperate to form the movable adjustable component 200. This adjustable protective component 100 with this structure adopts a movably hinged double protective end plate 4 structure, and the outer contours of the two protective end plates 4 together form a curved surface structure that adapts to the inner wall of the end of the lampshade 9, which enhances the shielding effect, optimizes light efficiency and protective performance, and effectively prevents dust, insects, and light leakage from entering. The two protective end plates 4 are connected by a plug-in structure. 6. Relative movement is achieved. This plug-in structure 6 provides stable guidance for the relative movement of the two protective end plates 4. The relative movement adaptability range is wider, and it can accurately adapt to the size or shape changes of the lampshade 9 caused by installation tolerances or thermal expansion and contraction. It avoids hard contact and squeezing between the rigid end plate and the lampshade 9. In addition, the protective end plate 4 itself has a certain rigidity and has stronger impact resistance and deformation resistance compared with elastic blades. The protective component 100 with this structure design achieves more stable and reliable motion control with fewer moving parts, taking into account both shielding protection and light efficiency stability. At the same time, it has good structural strength and adaptability to large size fluctuations.

[0035] The specific installation method of the two protective end plates is explained in detail below: The two protective end plates 4 are pivotally connected by a connector 41, which serves as a fulcrum for the relative rotation of the two protective end plates 4. When subjected to force, the two protective end plates 4 rotate relative to each other around the connector 41 as the rotation center. The connector 41 is a pivot shaft located on both sides of one of the protective end plates 4, and the other protective end plate 4 is provided with a pivot hole 42 that mates with the pivot shaft. Alternatively, the connector 41 can also be a pin that rotatably passes between the two protective end plates 4, with through holes on both protective baffles to accommodate the pin. Thus, the two protective end plates 4 typically rotate relative to each other around a pivot shaft or rotation shaft, with a clear relationship between the adjustment range and angle. This structure can adapt to a wide range of size changes and can effectively transmit and disperse external pressure (such as the squeezing of a lampshade) through the end plate body and the connection point. It has good overall rigidity and strong compressive strength. In a further preferred configuration, the plug-in structure 6 includes a plug-in protrusion 61 disposed at one end of one of the protective end plates 4, and a plug-in groove 62 disposed on the other protective end plate 4 and adapted to the plug-in protrusion 61. The other protective end plate 4 is provided with an arc-shaped transition edge 63 connected to the lower side of the plug-in protrusion 61. The arc-shaped design of the arc-shaped transition edge 63 echoes the curved surface of the inner wall of the lampshade 9, reducing friction between the end plate and the inner wall of the lampshade 9, eliminating motion interference, and improving rotational smoothness. The mating length of the plug-in protrusion 61 and the plug-in groove 62 changes synchronously with the relative bending angle of the two protective end plates 4. The advantage of this design is that the plug-in structure of the two protective baffles adopts the interlocking design of the plug-in protrusion 61 and the plug-in groove 62. The length of the two is increased, the overlapping sealing surface is larger, and it provides stable guidance for the rotation of the protective end plate 4. No matter what angle the two end plates rotate relative to each other, the plug-in structure 6 always ensures that the two are tightly interlocked at the joint, forming a seamless transition continuous barrier. This effectively eliminates the possibility of straight gaps at the joint and can well adapt to the dimensional changes of the lampshade under various working conditions such as installation errors, thermal expansion and contraction, and vibration. It always maintains effective shielding of the lampshade end. This structural design of the protective end plate, through precise rotational movement and dynamic interlocking mechanism, takes into account both structural strength and smooth operation. While achieving adaptive adjustment, it ensures that the protective component has good shielding protection and light efficiency stability during adjustment and in any static position.

[0036] For further optimization settings, refer to Figures 4-5The two protective end plates 4 include two end plate frames 5 whose outer contours are adapted to the inner wall arc surface of the card-type lampshade 9. The two end plate frames 5 are independent structures with arc-shaped sides, so that the two protective end plates 4 can fit tightly against the inner wall of the card-type lampshade 9. The end plate frames 5 are set along the edge of the protective end plates 4 and are integrally formed or fixedly connected to the protective end plates 4, which improves the structural rigidity and durability. In order to eliminate motion interference, one end of the two end plate frames 5 is provided with two overlapping and staggered joints 51 at the junction of the two protective end plates 4. The overlapping and staggered direction of the two joints 51 is adapted to the relative movement direction of the two protective end plates 4. The overlapping and staggered arrangement provides clearance space for the relative rotation of the two protective end plates 4, ensuring smooth and interference-free movement. In addition, this overlapping and staggered structure of the end plate frames 5 also has a limiting function, which can prevent the two protective end plates 4 from disengaging or misaligning due to excessive relative movement, ensuring that the fitting process is controllable and further improving the structural reliability. Those skilled in the art can select the structure of the adjustable protective component based on the above description, and will not elaborate further here.

[0037] According to the protective component 100, it is fixedly installed on the lampshade 9 at a preset assembly position via the mounting part 7, as detailed in the reference. Figure 1 and Figure 4The mounting part 7 includes two mounting feet disposed at both ends of the adjustable protective component 100. Two guide grooves 8 are formed between the two mounting feet and the protective component 100, which are engaged with the guide protrusions 91 on both sides of the lampshade 9. The guide protrusions 91 are also provided with limiting plates for limiting the mounting feet. The mounting feet are integrally formed in a sheet-like structure on the end edge of the blade frame 2 or the end plate frame 5. The mounting feet are provided with mounting holes that cooperate with fasteners to fix them at the mounting position of the lampshade 9. Alternatively, the mounting feet can also adopt a snap-on structure or adhesive structure that cooperates with the corresponding mounting position of the lampshade 9 to achieve a fixed connection. The two mounting feet at both ends of the protective component 100 form a span support, which can effectively resist the torsional torque generated by the internal adjustment or external vibration of the protective component 100, and prevent it from loosening or shaking from inside the lampshade. With this structural design, when installing the protective component 100, simply align the guide slot 8 with the guide protrusion 91 and slide it in to achieve precise pre-positioning and initial fixation of the protective component 100. The matching shape of the guide slot 8 and the guide protrusion 91 ensures that the protective component 100 can only be embedded in the end of the lampshade in the single correct direction and position, effectively preventing reverse or misaligned installation. This structural design utilizes the guide protrusion 91 embedded in the guide slot 8 to form a guide rail-like positioning, eliminating the need for repeated position adjustments during installation and significantly improving assembly efficiency. The cooperation between the slot and the protrusion restricts positional deviation of the protective component, ensuring that the protective component is always centered at the end opening of the lampshade. Finally, the mounting feet are fixed to the corresponding mounting position of the lampshade using screws or clips, ensuring the sealing and light efficiency stability of the embedded shield and preventing light leakage or sealing failure due to installation deviations.

[0038] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A light strip structure for a train passenger compartment, comprising a lampshade (9) installed on the lamp body and an adjustable protective component (100) disposed at the end of the lampshade (9), characterized in that: The adjustable protective assembly (100) has a mounting part (7) fixedly connected to the lampshade (9) and at least one adjusting component (200) that is flexible or movable under pressure. The adjustable protective assembly (100) is embedded in the end opening of the lampshade (9), and its outer edge fits against the inner wall of the end of the lampshade (9) to achieve the fitting and blocking of the end opening of the lampshade (9). The adjusting component (200) deforms or moves relative to the protective assembly (100) when it is subjected to force to adapt to the opening size of the end of the lampshade.

2. The train passenger compartment light strip structure according to claim 1, characterized in that: The adjustable protective component (100) includes a mounting carrier that fits against the inner wall of the end of the lampshade (9). A plurality of protective blades (1) are spaced apart along the length of the inner side of the mounting carrier. The plurality of protective blades (1) constitute the flexible adjustment component (200). The mounting carrier is constructed as an integral blade frame (2) that can undergo elastic deformation under pressure, so that the plurality of protective blades (1) move closer to each other and press against each other as the blade frame (2) elastically deforms.

3. The train passenger compartment light strip structure according to claim 2, characterized in that: The adjusting component (200) includes a plurality of movable gaps (3) formed between a plurality of the protective blades (1), the movable gaps (3) being configured to allow the plurality of protective blades (1) to undergo relative displacement when the blade skeleton is bent, the width of the movable gaps (3) decreasing or increasing with the relative displacement of two adjacent protective blades (1).

4. The train passenger compartment light strip structure according to claim 2 or 3, characterized in that: One or both sides of the protective blade (1) are formed with overlapping parts (11), so that multiple protective blades (1) can achieve bidirectional overlapping and displacement adaptation when the frame is bent. Two adjacent protective blades (1) cooperate with each other through the overlapping parts (11) to form a partially overlapping and fitting overlapping state, and the overlapping area formed by the overlapping changes adaptively with the bending angle of the blade frame (2).

5. The train passenger compartment light strip structure according to claim 4, characterized in that: The overlapping part (11) is an overlapping step formed by extending the side of the protective blade (1) towards the adjacent protective blade (1). The overlapping steps of two adjacent protective blades (1) are arranged in a staggered manner to form a partially overlapping and fitting overlapping fit. The staggered limiting step forms an active gap (3) between two adjacent protective blades (1) that allows the protective blades (1) to move relative to each other. When the skeleton is compressed and undergoes elastic deformation, the several protective blades (1) abut against each other through their respective overlapping steps.

6. The train passenger compartment light strip structure according to claim 5, characterized in that: The overlapping step includes an overlapping surface (12) and a stop surface (13) connected in an L-shaped structure. When the overlapping surfaces (12) of two adjacent protective blades (1) overlap and coincide, the stop surface (13) of one of the protective blades (1) abuts against the corresponding side of the other adjacent protective blade (1) to limit the excessive relative movement between the adjacent protective blades (1).

7. The train passenger compartment light strip structure according to claim 1, characterized in that: The adjustable protective assembly (100) includes two protective end plates (4) that are movably connected, and a plug-in structure (6) is provided between the two protective end plates (4) to achieve relative movement. The two protective end plates (4) cooperate to form the movable adjustable component (200). The outer contours of the two protective end plates (4) together form a curved surface structure that is adapted to the inner wall of the end of the lampshade (9).

8. The train passenger compartment light strip structure according to claim 7, characterized in that: The two protective end plates (4) are pivotally connected by a connector (41), which forms a force fulcrum for the relative rotation of the two protective end plates (4). When subjected to force, the two protective end plates (4) rotate inward relative to each other with the connector (41) as the rotation center. The plug-in structure (6) includes a plug-in protrusion (61) provided at one end of one of the protective end plates (4) and a plug-in groove (62) correspondingly provided on the other protective end plate (4) and adapted to the plug-in protrusion (61). The other protective end plate (4) is provided with an arc-shaped transition edge (63) connected to the lower side of the plug-in protrusion (61). The matching length of the plug-in protrusion (61) and the plug-in groove (62) changes synchronously with the relative bending angle of the two protective end plates (4).

9. The train passenger compartment light strip structure according to claim 8, characterized in that: The two protective end plates (4) include two end plate frames (5) whose outer contours are adapted to the inner wall arc surface of the card-type lamp cover (9). The end plate frames (5) are set along the edge of the protective end plate (4) and are integrally formed or fixedly connected to the protective end plate (4). One end of the two end plate frames (5) is provided with two overlapping parts (51) arranged in a staggered structure at the junction of the two protective end plates (4). The overlapping and staggered direction of the two overlapping parts (51) is adapted to the relative movement direction of the two protective end plates (4).

10. The train passenger compartment light strip structure according to claim 2 or 7, characterized in that: The mounting part (7) includes two mounting feet disposed at both ends of the adjustable protective assembly (100). The two mounting feet and the protective assembly (100) form two guide slots (8) that fit into the guide protrusions (91) on both sides of the lampshade (9). The mounting feet are integrally formed in a sheet-like structure on the end edge of the blade frame (2) or the end plate frame (5). The mounting feet are provided with mounting holes, snap-fit ​​structures or adhesive structures for fixed connection with the corresponding mounting position of the lampshade (9).

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