Subway headlamp convenient to install
Patent Information
- Application Number
- CN202522680246.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-17
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-17
AI Technical Summary
Traditional subway headlights are cumbersome to install and inconvenient to maintain. Furthermore, the way the reflectors are fixed results in high maintenance costs and low efficiency, making it difficult to replace or repair the reflectors according to different driving scenarios.
The integrated housing design utilizes fixing and snap-fit components to achieve a detachable connection between the lamp and the reflector. The combination of an arc-shaped retaining spring and a positioning rod enables quick fixing and disassembly. The use of a wing nut and rubber ring ensures stable lighting performance and convenient maintenance.
It simplifies the installation process, reduces installation costs, improves maintenance efficiency, and ensures the consistency and stability of lighting effects.
Smart Images
Figure CN224932560U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of subway lighting equipment, specifically relating to a subway headlight that is easy to install. Background Technology
[0002] As a core component of urban public transportation, the safety of subway trains is directly related to the safety of passengers' lives and property. Subway headlights, as key safety equipment, must meet the core requirements of convenient installation, efficient maintenance, and stable lighting.
[0003] Currently, traditional subway headlights suffer from two major drawbacks that urgently need to be addressed: 1. Traditional subway headlights typically employ a split design, requiring the high beam, low beam, and red taillight to be separately fixed to the train body during installation, resulting in cumbersome and inefficient operation; 2. As a key component determining the angle and intensity of the illumination light, the reflector is usually fixed using screws or glue. Screw fastening requires specialized tools for disassembly, which is inconvenient, and the screws are prone to rust and jamming after long-term use. Glue fastening does not allow for repeated disassembly and reassembly of the reflector. When different reflector specifications need to be replaced according to different operating scenarios, or when the reflector is damaged and needs repair or replacement, the surrounding structure must be damaged, leading to high maintenance costs, low efficiency, and seriously affecting subway operation and scheduling.
[0004] To address the aforementioned problems, this utility model proposes a subway headlight that is easy to install. Utility Model Content
[0005] To address the aforementioned problems in the existing technology, this utility model provides an easy-to-install subway headlight that is convenient to use and easy to replace, aiming to solve the problems of cumbersome installation and inconvenient maintenance in the existing technology.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a subway headlight that is easy to install, comprising an outer shell, a plurality of reflectors disposed within the outer shell, and a lamp disposed within the outer shell and corresponding to the reflectors. The outer shell includes a rear shell and a transparent light guide cover fixed to the rear shell by bolts. A through hole for installing the lamp is provided on the rear shell. The light also includes a fixing component and a locking component.
[0007] The lamp is detachably connected to the rear housing using a fixing component;
[0008] The reflector bowl is engaged with the rear housing using a locking assembly, and the locking assembly includes a second positioning rod and an arc-shaped retaining spring.
[0009] A fixing ring is fixed at the tail end of the reflector bowl, and multiple fixing holes are provided on the fixing ring at equal intervals along the circumferential direction.
[0010] The second positioning rod is fixed to the inner side of the rear housing and passes through the fixing hole, and a slot is provided on the second positioning rod;
[0011] The arc-shaped retaining spring is sleeved on the second positioning rod and snaps into the retaining groove.
[0012] As a preferred embodiment of this utility model, the fixing ring and the reflective bowl are an integral structure formed by injection molding.
[0013] As a preferred technical solution of this utility model, the engaging assembly further includes a limiting rod;
[0014] Both ends of the arc-shaped retaining spring are provided with limiting bending portions that bend inward. The two limiting rods are fixed to the fixing ring at intervals and cooperate with the limiting bending portions. A baffle is fixed at the end of the limiting rod away from the fixing ring.
[0015] As a preferred technical solution of this utility model, the fixing component includes a pressure plate, a screw, and a wing nut;
[0016] A limiting ring is fixed on the lamp, and the diameter of the limiting ring is larger than the inner diameter of the through hole;
[0017] The clamping plate is sleeved on the lamp, and multiple mounting holes are equally spaced along the circumferential direction on the clamping plate;
[0018] The screw is fixed to the outer side of the rear housing and passes through the mounting hole;
[0019] The wing nut is provided at the protruding end of the screw by means of thread engagement.
[0020] As a preferred embodiment of this utility model, a first positioning rod is fixed on the limiting ring, and a positioning hole is provided on the pressing plate for the first positioning rod to pass through.
[0021] As a preferred technical solution of this utility model, it also includes a rubber ring;
[0022] Rubber rings fitted onto the lamp are distributed between the rear housing and the limiting ring, and between the limiting ring and the pressing plate.
[0023] As a preferred technical solution of this utility model, it also includes a positioning frame;
[0024] The positioning frame is fixed to the rear housing, the transparent light guide is embedded inside the positioning frame, and the outer side wall of the transparent light guide is attached to the inner side wall of the positioning frame.
[0025] As a preferred technical solution of this utility model, the positioning frame is provided with a rubber sealing frame located between the rear shell and the transparent light guide cover.
[0026] Compared with the prior art, the beneficial effects of this utility model are:
[0027] 1. The high beam, low beam and taillight functions are integrated into the same housing, and installation can be completed with only one positioning and fixing, which greatly simplifies the installation process, shortens the installation time, reduces the installation cost, and avoids the accuracy deviation caused by multiple positioning.
[0028] 2. The reflector bowl is connected to the outer shell through a detachable snap-fit structure. No special tools are required, and the reflector bowl can be installed and removed manually. This makes it convenient to replace reflector bowls of different specifications according to actual driving needs, or to repair and replace damaged reflector bowls, which significantly improves maintenance efficiency and reduces maintenance costs.
[0029] Other additional advantages and beneficial effects 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 this invention. Attached Figure Description
[0030] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0031] Figure 1 This is a schematic diagram of the structure of this utility model;
[0032] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0033] Figure 3 This utility model Figure 2 A magnified schematic diagram of the fixed component in the diagram;
[0034] Figure 4 This is a partially enlarged structural diagram of the reflector bowl in this utility model;
[0035] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the diagram;
[0036] Figure 6 This utility model Figure 4 A magnified schematic diagram of the card engagement component.
[0037] In the diagram: 1. Outer shell; 11. Rear shell; 111. Through hole; 112. Positioning frame; 12. Transparent light guide cover; 2. Reflector bowl; 21. Fixing ring; 211. Fixing hole; 3. Lamp; 31. Limiting ring; 311. First positioning rod; 4. Fixing assembly; 41. Pressure plate; 411. Mounting hole; 412. Positioning hole; 42. Screw; 43. Wing nut; 44. Rubber ring; 5. Engaging assembly; 51. Second positioning rod; 511. Slot; 52. Arc-shaped retaining spring; 521. Limiting bend; 53. Limiting rod; 531. Baffle; 6. Rubber sealing frame. Detailed Implementation
[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0039] Please see Figures 1-6 The present invention provides the following technical solution: a subway headlight that is easy to install, including a housing 1, a plurality of reflectors 2 disposed in the housing 1, and a lamp 3 disposed in the housing 1 and corresponding to the reflectors 2. The housing 1 includes a rear housing 11 and a transparent light guide cover 12 fixed to the rear housing 11 by bolts. A through hole 111 for installing the lamp 3 is provided on the rear housing 11. It also includes a fixing component 4 and a snap-fit component 5.
[0040] Furthermore, by Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, the lamp 3 is detachably connected to the rear housing 11 using the fixing component 4; the reflector bowl 2 is engaged with the rear housing 11 using the engaging component 5, which includes a second positioning rod 51 and an arc-shaped retaining spring 52; a fixing ring 21 is fixed at the tail end of the reflector bowl 2, and multiple fixing holes 211 are evenly distributed along the circumferential direction on the fixing ring 21; the second positioning rod 51 is fixed to the inner side of the rear housing 11 and passes through the fixing holes 211, and a retaining groove 511 is provided on the second positioning rod 51; the arc-shaped retaining spring 52 is sleeved on the second positioning rod 51 and engages in the retaining groove 511. With the above scheme, when installing the reflector bowl 2, the second positioning rod 51 on the inner side of the rear housing 11 is used as the positioning reference, and the fixing holes 211 on the fixing ring 21 at the tail end of the reflector bowl 2 are aligned with the second positioning rod 51 and inserted. The gap fit between the fixing holes 211 and the second positioning rod 51 achieves the initial positioning of the reflector bowl 2, avoiding offset during installation.
[0041] When the fixing ring 21 is attached to the inner wall of the rear housing 11, the arc-shaped retaining spring 52 is inserted along the axis of the second positioning rod 51 until the elastic deformation part of the arc-shaped retaining spring 52 is engaged in the slot 511. At this time, the arc-shaped retaining spring 52 presses against the fixing ring 21 to form an axial limit. At the same time, the slot 511 radially constrains the arc-shaped retaining spring 52 to prevent it from falling off. Finally, the reflector bowl 2 and the rear housing 11 are quickly engaged and fixed. No complicated tools are needed, and the operation can be completed by a single person, which is suitable for the narrow installation space in the subway car.
[0042] When installing the lamp 3, first pass the wiring terminal of the lamp 3 through the through hole 111 of the rear housing 11 (the gap between the diameter of the through hole 111 and the housing of the lamp 3 is controlled at 0.5-1mm, which has both guiding and anti-shaking effects), and then achieve a detachable connection between the lamp 3 and the rear housing 11 through the fixing component 4.
[0043] After the reflector bowl 2 and the lamp 3 are installed in place, the transparent light guide cover 12 is placed over the opening end of the rear housing 11 and the two are fixed by circumferentially distributed bolts: the detachable nature of the bolt connection facilitates subsequent maintenance.
[0044] When the subway headlights are working, the lamp 3 is powered on and emits light. The light shines directly onto the inner reflective surface of the reflector bowl 2. The parabolic structure of the reflector bowl 2 converges the divergent light into parallel light (or a beam of light at a specific angle that meets the subway lighting standards). After being uniformly treated by the transparent light guide cover 12, the light is emitted to achieve effective lighting in front of the track.
[0045] When the lamp 3 needs to be replaced, there is no need to remove the fixing bolts of the transparent light guide cover 12. Only the constraint of the fixing component 4 needs to be released, and the lamp 3 can be taken out from the outside of the rear housing 11 along the through hole 111. There is also no need to remove the reflector bowl 2, reducing the disassembly steps.
[0046] If the reflector bowl 2 needs to be replaced, after removing the transparent light guide cover 12, simply use a tool (or manually) to pry it from the open end of the arc-shaped retaining spring 52 to both sides, so that it is disengaged from the retaining groove 511 and pulled out along the second positioning rod 51. The reflector bowl 2, together with the fixing ring 21, can be pulled out from the second positioning rod 51. When installing the new reflector bowl 2, repeat the locking process. There is no need to recalibrate the position of the lamp 3, ensuring the consistency of the lighting effect after maintenance.
[0047] Preferably, by Figure 1 , Figure 2 , Figure 4 and Figure 6As shown in this embodiment, the fixing ring 21 and the reflector bowl 2 are injection-molded integral structures. With the above solution, compared with the separate assembly structure, the injection-molded integral design eliminates the connection gap between the fixing ring 21 and the reflector bowl 2 during use, resulting in higher structural strength. It can effectively resist the vibration and impact during subway operation, avoid the fixing ring 21 from loosening or the reflector bowl 2 from shifting due to long-term vibration, ensure the relative positional accuracy of the reflector bowl 2 and the lamp 3, and ensure stable light reflection effect.
[0048] Preferably, by Figure 1 , Figure 2 , Figure 4 and Figure 6 As shown, in this embodiment, the engaging assembly 5 also includes a limiting rod 53; both ends of the arc-shaped retaining spring 52 are provided with limiting bending portions 521 that bend inwards. The two limiting rods 53 are fixed to the fixing ring 21 at intervals and cooperate with the limiting bending portions 521. A baffle 531 is fixed at the end of the limiting rod 53 away from the fixing ring 21. With the above solution, when in use, the limiting bending portion 521 of the arc-shaped retaining spring 52 and the limiting rod 53 on the fixing ring 21 form a circumferential limiting cooperation, which can effectively limit the circumferential rotation of the arc-shaped retaining spring 52 on the second positioning rod 51, and prevent the arc-shaped retaining spring 52 from shifting and disengaging from the retaining groove 511 due to high-frequency vibration during subway operation, thereby further improving the engaging and fixing reliability of the reflector bowl 2.
[0049] The baffle 531 at the end of the limiting rod 53 away from the fixed ring 21 can axially abut against the limiting bend 521 to form a double axial limit. Combined with the locking action of the arc-shaped snap ring 52 and the snap groove 511, it eliminates the risk of the arc-shaped snap ring 52 falling off along the axis of the second positioning rod 51, and is suitable for the vibration environment of long-distance subway operation.
[0050] Optionally, by Figures 1-3 As shown, in this embodiment, the fixing component 4 includes a clamping plate 41, a screw 42, and a wing nut 43; a limiting ring 31 is fixed on the lamp 3, and the diameter of the limiting ring 31 is larger than the inner diameter of the through hole 111; the clamping plate 41 is sleeved on the lamp 3, and a plurality of mounting holes 411 are equally spaced along the circumferential direction on the clamping plate 41; the screw 42 is fixed to the outer side of the rear housing 11 and passes through the mounting holes 411; the wing nut 43 is screwed onto the screw 41 by means of thread engagement. 2. For the extended end, after adopting the above scheme, when installing the lamp 3, first insert its wiring terminal through the through hole 111 of the rear housing 11 until the limiting ring 31 on the outer wall of the lamp 3 fits against the inner side wall of the rear housing 11. Since the diameter of the limiting ring 31 is larger than the inner diameter of the through hole 111, it can directly form the axial inner limit of the lamp 3, avoiding the lamp 3 from extending too far into the rear housing 11. At the same time, it ensures that the distance between the light-emitting end of the lamp 3 and the reflector bowl 2 meets the design requirements, and initially ensures the alignment accuracy of the light focus.
[0051] Then, the clamping plate 41 is fitted along the outer wall of the lamp 3, so that the multiple mounting holes 411 on the clamping plate 41 are aligned with the screws 42 on the outer side of the rear housing 11 and fitted in, ensuring that the clamping plate 41 is stably attached to the outer side wall area of the rear housing 11 corresponding to the limiting ring 31, forming an axial outer pre-constraint on the lamp 3, and preventing the lamp 3 from radially shifting during the subsequent fixing process.
[0052] Finally, screw the wing nut 43 onto the protruding end of the screw 42. Axial pressure can be applied by manually rotating the wing nut 43. As the wing nut 43 is tightened, its end face comes into contact with the pressure plate 41 and applies continuous pressure, so that the pressure plate 41 is tightly pressed against the outer wall of the rear housing 11. Then, through the clamping action of the limiting ring 31 and the inner side wall of the rear housing 11, the lamp 3 is rigidly fixed in the axial direction. At the same time, the circumferentially distributed screws 42 and wing nuts 43 (usually 3-4 sets) can form a uniform radial constraint. With the limiting action of the through hole 111, the radial wobbling of the lamp 3 is restricted, and finally the light-emitting center of the lamp 3 is precisely aligned with the focal point of the reflector bowl 2, ensuring the reflection and focusing effect.
[0053] When the lamp 3 needs to be replaced or repaired, it can be removed from the screw 42 by manually rotating the wing nut 43 in the reverse direction without the need for tools. Then, the clamping plate 41 can be removed along the axial direction of the screw 42, at which point the axial constraint of the lamp 3 is released. Since the limiting ring 31 only serves as a limiting function and has no fixed connection, the lamp 3 can be directly pulled out from the outside of the rear housing 11 along the through hole 111, saving the step of removing the bolts with tools. Moreover, there is no need to disassemble the internal components of the rear housing 11 (such as the reflector bowl 2). The lamp 3 can be disassembled by a single person.
[0054] Preferably, by Figures 1-3 As shown in this embodiment, a first positioning rod 311 is fixed on the limiting ring 31, and a positioning hole 412 is provided on the pressing plate 41 for the first positioning rod 311 to pass through. With the above solution, in use, the cooperation between the first positioning rod 311 and the positioning hole 412 forms a "double guide" structure. The radial positioning of the pressing plate 41 is achieved by the screw 42 and the mounting hole 411, and the precise cooperation between the first positioning rod 311 and the positioning hole 412 restricts the circumferential rotation of the pressing plate 41, ensuring that the pressing plate 41 and the limiting ring 31 are completely coaxially fitted, avoiding light scattering and focus shift problems caused by installation deviation.
[0055] Preferably, by Figures 1-3As shown, this embodiment also includes rubber rings 44; rubber rings 44 are distributed between the rear housing 11 and the limiting ring 31 and between the limiting ring 31 and the pressing plate 41, and are sleeved on the lamp 3. With the above solution, when in use, the rubber rings 44 fill the assembly gap between the rear housing 11 and the limiting ring 31, and between the limiting ring 31 and the pressing plate 41. The elastic deformation of the rubber material achieves a tight fit, forming a double sealing structure. This can prevent dust and moisture in the tunnel from entering the through hole 111 and the connection of the lamp 3, avoiding short circuits or component corrosion. It can also isolate external noise transmission, adapt to the humid, dusty, and high-frequency vibration operating environment of the subway, and extend the service life of the lamp 3 and the fixing components 4.
[0056] When the high-frequency vibrations generated by the subway operation are transmitted through the rear housing 11, the elastic properties of the rubber ring 44 can absorb the vibration energy, avoid rigid collisions between the rear housing 11, the limiting ring 31, and the clamping plate 41, and reduce the impact of vibration on the positioning accuracy of the lamp 3. At the same time, the buffering effect of the rubber ring 44 can reduce the risk of loosening of the threads of the wing nut 43 due to vibration. Combined with the circumferential constraint of the first positioning rod 311, it further improves the long-term reliability of the lamp 3 fixation and avoids the light focus shifting due to vibration.
[0057] Preferably, by Figure 1 , Figure 2 and Figure 5 As shown, this embodiment also includes a positioning frame 112; the positioning frame 112 is fixed on the rear housing 11, the transparent light guide 12 is embedded inside the positioning frame 112, and the outer side wall of the transparent light guide 12 is attached to the inner side wall of the positioning frame 112. With the above solution, when in use, the positioning frame 112 provides a precise installation reference for the transparent light guide 12. When embedded, the outer side wall can be guided by the attachment of the inner side wall of the positioning frame 112 to achieve quick alignment. There is no need to repeatedly adjust the circumferential position and level of the transparent light guide 12, and a single person can complete the embedding operation.
[0058] Preferably, by Figure 1 , Figure 2 and Figure 5 As shown in this embodiment, the positioning frame 112 is provided with a rubber sealing frame 6 located between the rear housing 11 and the transparent light guide cover 12. With the above solution, when in use, the rubber sealing frame 6 fills the tiny gap between the rear housing 11, the positioning frame 112 and the transparent light guide cover 12. Utilizing the elastic deformation characteristics of the rubber material, the sealing surface is tightly fitted under the bolt tightening pressure, effectively preventing dust and other impurities in the tunnel from entering the interior of the outer shell 1, avoiding oxidation and corrosion of the reflector bowl 2 and short circuit of the lamp 3 circuit. It is suitable for the harsh operating environment of subway exposed to rain and tunnels that are humid and dusty, and extends the service life of the core components.
[0059] Components not described in detail in this article are existing technologies.
[0060] The working principle and usage process of this utility model: When using the subway headlight of this utility model, the second positioning rod 51 on the inner side of the rear housing 11 is used as the positioning reference. The fixing hole 211 on the fixing ring 21 at the tail end of the reflector bowl 2 is aligned with the second positioning rod 51 and inserted. The gap fit between the fixing hole 211 and the second positioning rod 51 realizes the initial positioning of the reflector bowl 2 and avoids the offset during installation.
[0061] When the fixing ring 21 is attached to the inner wall of the rear housing 11, the arc-shaped retaining spring 52 is inserted along the axis of the second positioning rod 51 until the elastic deformation part of the arc-shaped retaining spring 52 is inserted into the slot 511. At this time, the arc-shaped retaining spring 52 presses against the fixing ring 21 to form an axial limit. At the same time, the slot 511 radially constrains the arc-shaped retaining spring 52 to prevent it from falling off. Finally, the reflector bowl 2 and the rear housing 11 are quickly engaged and fixed. No complicated tools are needed. The operation can be completed by one person, which is suitable for the narrow installation space in the subway car.
[0062] When installing the lamp 3, first insert its wiring terminal through the through hole 111 of the rear housing 11 until the limiting ring 31 on the outer wall of the lamp 3 fits against the inner wall of the rear housing 11. Since the diameter of the limiting ring 31 is larger than the inner diameter of the through hole 111, it can directly form the axial inner limit of the lamp 3, preventing the lamp 3 from extending too far into the rear housing 11. At the same time, it ensures that the distance between the light-emitting end of the lamp 3 and the reflector bowl 2 meets the design requirements, thus initially ensuring the alignment accuracy of the light focus.
[0063] Then, the clamping plate 41 is fitted along the outer wall of the lamp 3, so that the multiple mounting holes 411 on the clamping plate 41 are aligned with the screws 42 on the outer side of the rear housing 11 and fitted in, ensuring that the clamping plate 41 is stably attached to the outer side wall area of the rear housing 11 corresponding to the limiting ring 31, forming an axial outer pre-constraint on the lamp 3, and preventing the lamp 3 from radially shifting during the subsequent fixing process.
[0064] Finally, screw the wing nut 43 onto the protruding end of the screw 42. Axial pressure can be applied by manually rotating the wing nut 43. As the wing nut 43 is tightened, its end face comes into contact with the pressure plate 41 and continues to apply pressure, so that the pressure plate 41 is tightly pressed against the outer wall of the rear housing 11. Then, through the clamping action of the limiting ring 31 and the inner side wall of the rear housing 11, the lamp 3 is rigidly fixed in the axial direction.
[0065] After the reflector bowl 2 and the lamp 3 are installed in place, the transparent light guide cover 12 is placed over the opening end of the rear housing 11 and the two are fixed by circumferentially distributed bolts: the detachable nature of the bolt connection facilitates subsequent maintenance.
[0066] When the subway headlights are working, the lamp 3 is powered on and emits light. The light shines directly onto the inner reflective surface of the reflector bowl 2. The parabolic structure of the reflector bowl 2 converges the divergent light into parallel light (or a beam of light at a specific angle that meets the subway lighting standards). After being uniformly treated by the transparent light guide cover 12, the light is emitted to achieve effective lighting in front of the track.
[0067] When the lamp 3 needs to be replaced, there is no need to remove the fixing bolts of the transparent light guide cover 12. Only the wing nut 43 needs to be unscrewed to remove the lamp 3 from the outside of the rear housing 11 along the through hole 111. There is also no need to remove the reflector bowl 2, reducing the disassembly steps.
[0068] If the reflector bowl 2 needs to be replaced, after removing the transparent light guide cover 12, simply use a tool (or manually) to pry it from the open end of the arc-shaped retaining spring 52 to both sides, so that it is disengaged from the retaining groove 511 and pulled out along the second positioning rod 51. The reflector bowl 2, together with the fixing ring 21, can be pulled out from the second positioning rod 51. When installing the new reflector bowl 2, repeat the locking process. There is no need to recalibrate the position of the lamp 3, ensuring the consistency of the lighting effect after maintenance.
[0069] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A subway headlight that is easy to install, comprising a housing (1), a plurality of reflectors (2) disposed within the housing (1), and a luminaire (3) disposed within the housing (1) and corresponding to the reflectors (2), wherein the housing (1) comprises a rear housing (11) and a transparent light guide cover (12) fixed to the rear housing (11) by bolts, and a through hole (111) for mounting the luminaire (3) is provided on the rear housing (11), characterized in that: It also includes a fixing component (4) and a snap-fit component (5); The lamp (3) is detachably connected to the rear housing (11) by means of a fixing component (4); The reflector bowl (2) is engaged with the rear housing (11) by means of a locking assembly (5), and the locking assembly (5) includes a second positioning rod (51) and an arc-shaped retaining spring (52); A fixing ring (21) is fixed at the tail end of the reflector bowl (2), and a plurality of fixing holes (211) are provided on the fixing ring (21) at equal intervals along the circumferential direction; The second positioning rod (51) is fixed to the inner side of the rear housing (11) and passes through the fixing hole (211), and a slot (511) is provided on the second positioning rod (51); The arc-shaped retaining ring (52) is sleeved on the second positioning rod (51) and inserted into the retaining groove (511).
2. The subway headlight that is easy to install according to claim 1, characterized in that: The fixing ring (21) and the reflector bowl (2) are an integral structure formed by injection molding.
3. The subway headlight that is easy to install according to claim 1, characterized in that: The engaging assembly (5) also includes a limiting rod (53); Both ends of the arc-shaped retaining ring (52) are provided with limiting bending portions (521) that bend inward. The two limiting rods (53) are fixed at intervals on the fixing ring (21) and cooperate with the limiting bending portions (521). A baffle (531) is fixed at the end of the limiting rod (53) away from the fixing ring (21).
4. The subway headlight that is easy to install according to claim 1, characterized in that: The fixing component (4) includes a pressure plate (41), a screw (42), and a wing nut (43); A limiting ring (31) is fixed on the lamp (3), and the diameter of the limiting ring (31) is larger than the inner diameter of the through hole (111); The clamping plate (41) is sleeved on the lamp (3), and a plurality of mounting holes (411) are provided on the clamping plate (41) at equal intervals along the circumferential direction; The screw (42) is fixed to the outer side of the rear housing (11) and passes through the mounting hole (411); The wing nut (43) is provided at the protruding end of the screw (42) by means of thread engagement.
5. A subway headlight that is easy to install according to claim 4, characterized in that: The limiting ring (31) is fixed with a first positioning rod (311), and the pressing plate (41) is provided with a positioning hole (412) through which the first positioning rod (311) passes.
6. A subway headlight that is easy to install according to claim 4, characterized in that: It also includes rubber rings (44); Rubber rings (44) are distributed between the rear housing (11) and the limiting ring (31), and between the limiting ring (31) and the pressing plate (41) on the lamp (3).
7. A subway headlight that is easy to install according to claim 1, characterized in that: It also includes a positioning frame (112); The positioning frame (112) is fixed on the rear housing (11), the transparent light guide (12) is embedded inside the positioning frame (112), and the outer side wall of the transparent light guide (12) is attached to the inner side wall of the positioning frame (112).
8. A subway headlight that is easy to install according to claim 7, characterized in that: The positioning frame (112) is provided with a rubber sealing frame (6) located between the rear housing (11) and the transparent light guide cover (12).