Lamp holder structure and bulb guide rail lamp

By using a modular lamp holder structure and heat dissipation groove design, the high maintenance cost and light decay problem of traditional rail lights are solved, achieving convenient maintenance and efficient heat dissipation, and reducing the use and R&D costs of rail lights.

CN224932632UActive Publication Date: 2026-11-03HUIZHOU NVC OPTOELECTRONICS TECH CO LTD
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Patent Information

Application Number
CN202522659788.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-12-16
Publication Date
2026-11-03
Estimated Expiration
2035-12-16

AI Technical Summary

Technical Problem

Traditional rail lights are expensive to replace and complex to maintain, and the high operating temperature of high-power light source components leads to light decay.

Method used

The bulb body and lamp holder are detachably connected in a modular manner, and the cover and cover are detachably connected. A heat dissipation groove is set inside the cover, and the bulb body is set inside the cover to improve heat dissipation efficiency.

Benefits of technology

It reduces maintenance difficulty, decreases the overall size of the lamp, lowers the internal temperature of the lamp body, extends the service life, and reduces maintenance and R&D costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a lamp stand structure for installing bulb lamp body, and the lamp stand structure comprises a guide rail assembly, a back cover and a heat dissipation piece, the guide rail assembly comprises a track head and a connecting rod, one end of the connecting rod is rotatably connected with the track head, the back cover comprises a cover body and a lamp stand, the cover body is provided with a mounting seat and a mounting surface, the other end of the connecting rod is rotatably connected with the mounting seat, and the lamp stand is fixed on the mounting surface, the heat dissipation piece comprises a cover body in the shape of a cylinder and a heat dissipation groove arranged on the cover body, and the bulb lamp body is arranged on the inner side of the cover body, the bulb lamp body is detachably connected with the lamp stand, and the cover body is detachably connected with the cover body. The lamp stand structure reduces the maintenance difficulty of the guide rail lamp in a detachable connection mode, has simple structure, reduces the volume of the whole lamp, the heat dissipation groove arranged on the cover body increases the heat dissipation area, improves the heat dissipation efficiency of the bulb lamp body, and reduces the light decay problem. The utility model also provides a bulb guide rail lamp adopting the lamp stand structure.
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Description

Technical Field

[0001] This utility model belongs to the technical field of lighting devices, specifically relating to a lamp holder structure and a bulb rail lamp. Background Technology

[0002] Track lights, as a type of lighting fixture used for focused illumination, are widely used in commercial spaces, exhibitions, and retail environments because they can move freely on a track and the direction and angle of the light can be adjusted.

[0003] In traditional track lighting, the lamp body is usually integrated. While this solution offers excellent illumination and a structure that is easy to adjust, it also suffers from high replacement costs and complex maintenance, causing some potential customers with limited budgets to hesitate to purchase track lighting.

[0004] In the current market, some companies are attempting to adjust and improve track lights. The goal of these improvements is typically to reduce maintenance costs and complexity by separating the easily damaged light source components from the rest of the lamp body, thus simplifying replacement. However, to accommodate light source components of varying power, additional adapters need to be incorporated into the lamp body, increasing the overall size and complicating the lamp's structure. Furthermore, if a higher-power light source component is used, the actual operating temperature of the high-power component will be higher than that of the lower-power component due to the limitations of the original lamp body's heat dissipation efficiency. This increased operating temperature can easily lead to light decay, affecting both illumination quality and lifespan. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a lamp holder structure and a bulb rail lamp, which detachably connects the modular bulb body to the lamp holder and the cover to the lamp holder, reducing the maintenance difficulty of the rail lamp and significantly reducing the overall size of the lamp. The bulb body is housed in a cover with heat dissipation grooves, which effectively reduces the internal operating temperature of the lamp body and reduces light decay caused by temperature rise.

[0006] The technical effect to be achieved by this utility model is realized through the following technical solution: In a first aspect, this utility model provides a lamp holder structure for mounting a bulb lamp body, the lamp holder structure comprising: A guide rail assembly includes a rail head and a connecting rod, one end of which is rotatably connected to the rail head; The rear cover includes a cover body and a lamp holder. The cover body has a mounting base and a mounting surface. The other end of the connecting rod is rotatably connected to the mounting base, and the lamp holder is fixed to the mounting surface. The heat dissipation component includes a cylindrical cover and a heat dissipation groove formed in the cover, wherein the bulb lamp body is disposed inside the cover; The bulb body is detachably connected to the lamp holder, and the cover is detachably connected to the cap.

[0007] In some implementations, the cover surrounds to form a receiving space, and the bulb lamp body is disposed in the receiving space; the cover is close to the bulb lamp body, or there is a gap between the cover and the bulb lamp body.

[0008] In some implementations, the back cover is further provided with a rim, which is formed by extending the edge of the cover body away from the mounting surface, and the cover body is snapped together with the rim.

[0009] In some implementations, the edging is provided with a locking block, the cover is provided with a locking groove, the locking groove is circumferentially opened on the side of the cover near the cover body, the locking block is engaged in the locking groove, and the outer side wall of the edging abuts against the inner side wall of the cover.

[0010] In some implementations, the mounting base is disposed inside the perimeter, the mounting base extends protruding away from the mounting surface, the mounting base is provided with a mounting groove, and the end of the connecting rod is mounted in the mounting groove.

[0011] In some implementations, the back cover is further provided with a mounting post, which is disposed on the mounting surface. The lamp holder is provided with a positioning hole, the mounting post is inserted into the positioning hole, and a fastener passes through the mounting post and is fixedly connected to the positioning hole.

[0012] Secondly, this utility model provides a bulb rail lamp, including a bulb lamp body and the above-mentioned lamp holder structure; The bulb lamp body includes a lamp body and a lamp head, the lamp head is disposed at the end of the lamp body, and the lamp body is detachably installed in the lamp holder through the lamp head.

[0013] In some implementations, the lamp body includes a housing, a light-emitting component, a lens, and a light-emitting element. The light-emitting element and the housing together form a mounting cavity. The light-emitting component and the lens are disposed in the mounting cavity. The light-emitting component includes a circuit board and a light-emitting element. The light-emitting element is soldered and fixed to the circuit board, and the lens covers the light-emitting element.

[0014] In some implementations, the lamp holder has a slot, and the lamp head is screwed or snapped into the slot.

[0015] In some implementations, the slot is provided with a first electrical connector, and the lamp holder is provided with a second electrical connector, the second electrical connector being threadedly connected to the first electrical connector.

[0016] In summary, this utility model has at least the following advantages: 1. The lamp holder structure provided by this utility model adopts a modular bulb structure, with the bulb body and lamp holder detachably connected. The cover and housing are also detachably connected, facilitating user replacement of the core components of the rail light according to needs and reducing maintenance difficulty. Furthermore, the light source assembly and power adapter are integrated into the bulb body, which is simpler in structure and reduces the overall size of the lamp compared to solutions that separate the adapter from the light source assembly.

[0017] 2. The lamp holder structure provided by this utility model has the bulb body set inside the cover. The heat generated by the lamp body is dissipated and conducted outward through the cover and the space. The heat dissipation grooves set in the cover increase the heat dissipation area of ​​the cover and improve the heat dissipation efficiency of the entire cover. This creates a large temperature difference between the cover and the bulb body, improves the heat dissipation efficiency, and effectively reduces the working temperature inside the lamp body, thus reducing the light decay problem caused by the temperature rise.

[0018] 3. The bulb track light provided by this utility model, after adopting the above-mentioned lamp holder structure, effectively reduces the lamp body replacement cost and maintenance cost of the track light. At the same time, without changing the lamp holder structure, it expands the applicable range of lighting power, thereby meeting the lighting needs of different power, reducing the research and development and use cost of the track light, and improving the overall lamp life and economic efficiency. Attached Figure Description

[0019] Figure 1 This is an exploded view of the lamp holder structure in Example 1.

[0020] Figure 2 This is an axonometric view of the lamp holder structure in Example 1.

[0021] Figure 3 This is an axonometric view of the lamp holder structure with a bulb body in Example 1.

[0022] Figure 4 for Figure 1 A magnified view of point A in the middle.

[0023] Figure 5 This is an exploded view of the bulb rail lamp in Example 2.

[0024] Figure 6 This is a cross-sectional view of the internal structure of the bulb in Example 2.

[0025] Figure 7 This is an exploded view of the bulb rail lamp in Example 3.

[0026] Marked in the image: 100. Lamp holder structure; 200. Bulb rail light; 1. Guide rail assembly; 11. Rail head; 12. Connecting rod; 121. Rotating shaft; 2. Rear cover, 21. Cover body, 211. Mounting base, 2111. Mounting groove, 212. Mounting surface, 22. Lamp holder, 221. Positioning hole, 222. Groove, 2221. First electrical connector, 23. Edge, 231. Locking block, 24. Mounting post, 25. Fastener; 3. Heat sink; 31. Cover; 311. Slot; 32. Heat sink groove; 33. Accommodation space; 4. Bulb body; 41. Lamp body; 411. Housing; 412. Light-emitting component; 4121. Circuit board; 4122. Light-emitting element; 413. Lens; 414. Light-emitting component; 415. Mounting chamber; 416. Power module; 42. Lamp holder; 421. Second electrical connector. 5. Cables. Detailed Implementation

[0027] To facilitate understanding of this utility model, a more comprehensive description will be given below with reference to the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of this utility model. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0028] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0029] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0031] Example 1: Please see Figures 1-3 This embodiment provides a lamp holder structure 100, which is disposed on a rail lamp and used to mount a bulb lamp body 4. The lamp holder structure 100 includes a rail assembly 1, a back cover 2, and a heat sink 3. One end of the rail assembly 1 is slidably connected to the external rail of the rail lamp, and the other end is rotatably connected to the back cover 2, achieving a directional movement effect of the rail. The heat sink 3 is detachably connected to the back cover 2, providing greater heat dissipation efficiency for the bulb lamp body 4.

[0032] Furthermore, the guide rail assembly 1 includes a rail head 11 and a connecting rod 12. One end of the connecting rod 12 is rotatably connected to the rail head 11, and the other end of the rail head 11 is slidably connected to the external guide rail. The rear cover 2 includes a cover body 21 and a lamp holder 22. The cover body 21 is provided with a mounting base 211 and a mounting surface 212. The other end of the connecting rod 12 is rotatably connected to the mounting base 211, and the lamp holder 22 is fixed on the mounting surface 212. The heat sink 3 includes a cylindrical cover 31 and heat dissipation grooves 32 formed in the cover body 31. The bulb lamp body 4 is disposed inside the cover body 31. The heat dissipation grooves 32 can be distributed on the outer circumference of the cover body 31 in a grid structure, or penetrate the inner side of the cover body 31 and communicate with the bulb lamp body 4. The bulb lamp body 4 is detachably connected to the lamp holder 22, and the cover body 31 is detachably connected to the cover body 21.

[0033] Bulb lamps are widely used in daily life due to their modular design and ease of assembly and disassembly. Users of the aforementioned lamp holder structure 100 can easily obtain the corresponding bulb body 4. In a rail light with the lamp holder structure 100, the bulb body 4 is detachably connected to the lamp holder 22, and the cover 31 and the cap 21 are also detachably connected. If the bulb body 41 malfunctions, breaks down, or if a different effect is required, the user only needs to disassemble the cover 31 and the bulb body 4 for replacement. During installation, the new bulb body 4 is first installed on the lamp holder 22, and then the cover 31 is fitted over the outside of the bulb body 4 and fixed to the back cover 2, thus completing the final installation. Compared to existing rail light solutions, this method significantly reduces the maintenance difficulty for users.

[0034] Secondly, the modular structure of the bulb body 4 can be assembled during the production stage without the need for user adjustments. The light source component and the power adapter of the bulb body 4 are integrated internally. Compared with the existing solution that separates the adapter and the light source component, the size and structural complexity of the entire track light are significantly reduced, meeting the market demand for miniaturization of track lights.

[0035] The bulb body 4 is located inside the cover 31. The heat generated by the bulb body 41 during operation is dissipated outwards through conduction between the cover 31 and the surrounding air. The heat dissipation grooves 32 on the cover 31 increase the heat dissipation area and improve the overall heat dissipation efficiency, thus creating a larger temperature difference between the bulb body 4 and the cover 31. The bulb body 4 can conduct heat outwards more quickly and effectively, improving heat dissipation efficiency and effectively reducing the internal operating temperature of the bulb body 41. This reduces the probability of light decay due to temperature increases, thus mitigating the light decay problem.

[0036] In this embodiment, the cylindrical cover 31 forms an internal receiving space 33, and the bulb lamp body 4 is disposed within the receiving space 33. The inner wall of the cover 31 is tightly attached to the outer surface of the bulb lamp body 4. The contact between the cover 31 and the outer side of the lamp body improves the heat exchange efficiency of the bulb lamp body 4, further reducing light decay. Of course, in some embodiments, the lighting power of the bulb lamp body 4 is relatively low, and a gap may be left between the cover 31 and the bulb lamp body 4. The cooling effect is achieved through airflow generated by the temperature difference of the airflow. The non-contact cover 31 can also increase the temperature difference, which also improves the heat exchange efficiency of the bulb lamp body 4.

[0037] Please Figures 1-3 Based on the above Figure 4 In some embodiments, the rear cover 2 is further provided with a surrounding edge 23, which is formed by extending from the edge of the cover body 21 in a direction away from the mounting surface 212, and the cover body 31 is snapped together with the surrounding edge 23. With the surrounding edge 23 provided, the manufacturing difficulty of the rear cover 2 is greatly reduced. It can be manufactured by cutting and bending, or by die casting, which effectively reduces the number of process steps and improves processing efficiency.

[0038] Specifically, the rim 23 is provided with locking blocks 231, with multiple locking blocks 231 extending from the end of the rim 23 away from the cover 21, or arranged circumferentially on the rim 23. The cover 31 is provided with a slot 311, which is circumferentially opened on the side of the cover 31 near the cover 21. The locking blocks 231 are engaged in the slot 311, and the outer wall of the rim 23 abuts against the inner wall of the cover 31. The rear cover 2 can be disposed inside the cover 31, improving the appearance consistency of the lamp holder structure 100. When the cover 31 and the rear cover 2 are assembled, the rear cover 2 can be positioned by the outer wall of the rim 23 against the inner wall of the cover 31, and then fixed by the locking blocks 231 engaging in the slot 311, improving the installation efficiency of the lamp holder structure 100.

[0039] Continue reading Figures 1-4In this embodiment, the mounting base 211 is disposed inside the perimeter 23. The mounting base 211 extends protruding away from the mounting surface 212 and has a mounting groove 2111, in which the end of the connecting rod 12 is installed. Specifically, a common approach is to use a rotating shaft 121 between the end of the connecting rod 12 and the mounting groove 2111 to achieve a rotatable connection between the connecting rod 12 and the rear cover 2, thereby adjusting the angle between the rear cover 2 and the connecting rod 12. In other embodiments, to achieve more flexible angle adjustment, a spherical joint can also be used to achieve the mounting connection between the end of the connecting rod 12 and the mounting groove 2111.

[0040] In addition, in this embodiment, the rear cover 2 is also provided with a mounting post 24, which is disposed on the mounting surface 212. The lamp holder 22 is provided with a positioning hole 221, and the mounting post 24 is inserted into the positioning hole 221. The positioning hole 221 is provided with a threaded or snap-fit ​​structure, and the fastener 25 of the relevant structure passes through the mounting post 24 and is fixedly connected in the positioning hole 221. The mounting post 24 protrudes from the mounting surface 212 and is inserted into the positioning hole 221 to achieve a limiting effect. Then, the positioned lamp holder 22 and the rear cover 2 are locked and fixed by the fastener 25 to achieve assembly, which reduces the installation difficulty of fixing the lamp holder 22 to the rear cover 2 and improves production efficiency.

[0041] In summary, the lamp holder structure provided in this embodiment adopts a modular bulb structure, allowing for detachable connection between the bulb body and the lamp holder, as well as detachable connection between the cover and the shade. This facilitates user replacement of the core components of the rail light according to their needs, reducing maintenance difficulty. Furthermore, the light source assembly and power adapter are integrated into the bulb body, which, compared to solutions that separate the adapter from the light source assembly, simplifies the structure and reduces the overall size and complexity of the lamp.

[0042] Secondly, in the lamp holder structure provided in this embodiment, the bulb body is disposed inside the cover. After the heat generated by the lamp body is dissipated, it is conducted outward through the cover and the space in which it is located. The heat dissipation grooves provided in the cover increase the heat dissipation area of ​​the cover and improve the heat dissipation efficiency of the entire cover. This creates a large temperature difference between the cover and the bulb body, improves the heat dissipation efficiency, and effectively reduces the working temperature inside the lamp body, thereby reducing the light decay problem caused by the temperature rise.

[0043] Example 2: Please Figures 1-4 Based on the above Figures 5-6 This embodiment provides a bulb rail lamp 200, including a bulb body 4 and a lamp holder structure 100 as described in Embodiment 1. The bulb body 4 includes a lamp body 41 and a lamp head 42, with the lamp head 42 disposed at the end of the lamp body 41, and the lamp body 41 being detachably mounted in the lamp holder 22 via the lamp head 42.

[0044] By adopting the lamp holder structure 100, most of the components and structures that are crucial to the lighting effect are integrated into the bulb body 4. The lamp head 42 is detachably connected to the lamp holder 22, effectively reducing the maintenance and replacement costs of the bulb track light 200 in case of malfunction or maintenance. Without changing the lamp holder structure 100, the inclusion of a heat sink 3, with the bulb body 4 housed within it, expands the applicable lighting power range of the bulb body 4. The same lamp holder structure 100 can meet lighting needs of varying power, reducing the R&D and operating costs of the bulb track light 200 and improving the overall lamp life and economic efficiency.

[0045] In some embodiments, if the power and size of the bulb body 4 exceed the capacity and size of the heat sink 3, the heat dissipation efficiency can be ensured to meet the usage requirements by simultaneously replacing the heat sink 3. Of course, the heat dissipation efficiency and power of the heat sink 3 should be matched with the lighting power of the bulb body 4 to reduce light decay and ensure the service life of the track light.

[0046] Please Figures 1-5 Based on the above Figure 6 Furthermore, the lamp body 41 includes a housing 411, a light-emitting component 412, a lens 413, and a light-emitting element 414. The light-emitting element 414 and the housing 411 together form a mounting chamber 415. The light-emitting component 412 and the lens 413 are disposed in the mounting chamber 415. The light-emitting component 412 includes a circuit board 4121 and a light-emitting element 4122. The light-emitting element 4122 is soldered and fixed to the circuit board 4121, and the lens 413 covers the light-emitting element 4122. The light-emitting element 4122, as the core of the lamp body 41, emits light after being powered on. After being processed by the lens 413, the light is emitted outward to the light-emitting element 414. At the same time as emitting light, the light-emitting element 4122 and the power module 416 disposed on the circuit board 4121 generate heat, which is transferred outward from the circuit board 4121 to the housing 411 and the light-emitting element 414. Then, the housing 411 and the light-emitting element 414 exchange heat with the cover 31 and the external space to achieve a cooling effect. With the lens 413 and the light-emitting element 414 provided, the light emitted from the lamp body 41 is more concentrated and the light effect is better, which meets the basic concentrated lighting needs of the track light.

[0047] In summary, the bulb track light provided in this embodiment, by adopting the above-mentioned lamp holder structure, effectively reduces the lamp body replacement and maintenance costs. At the same time, without changing the lamp holder structure, it expands the applicable range of lighting power, thereby meeting the lighting needs of different power levels, reducing the research and development and use costs of track lights, and improving the overall lamp life and economic efficiency.

[0048] Example 3: Please Figures 1-6 Based on the above Figure 7This embodiment provides a bulb rail light 200, which is an adjustment and optimization based on embodiment 2. The difference from embodiment 2 is that the lamp holder 22 has a slot 222, and the lamp head 42 is screwed or snap-fitted into the slot 222. Through the threaded or snap-fit ​​structure, the user can quickly remove or install the bulb body 4, eliminating the need for tools and equipment and simplifying the disassembly and assembly process.

[0049] In a further embodiment, the slot 222 is provided with a first electrical connector 2221, and the lamp holder 42 is provided with a second electrical connector 421. The second electrical connector 421 is threadedly connected to the first electrical connector 2221. If the slot 222 adopts a threaded interface, the first electrical connector 2221 is integrally extruded with the inner sidewall of the slot 222 to fix the first electrical connector 2221, while the second electrical connector 421 is integrally formed with the outer surface of the lamp holder 42 by threading. Thus, the cooperation between the slot 222 and the lamp holder 42 simultaneously achieves the two functional requirements of fixed connection and electrical connection. The light-emitting element 4122 is electrically connected to the second electrical connector 421 of the lamp holder 42 through the power supply component provided on the circuit board 4121. The first electrical connector 2221 can be connected through the cable 5 to realize the electrical connection between the inside of the lamp holder 22 and the track head 11, and then the track head 11 is connected to the electrical connection end of the external guide rail. When the first electrical connector 2221 and the second electrical connector 421 are threaded together, the electrical connection between the light-emitting element 4122 and the external circuit is completed. This simplifies the internal wiring and makes the structure more compact.

[0050] In actual production, the lamp holder 22 and lamp base 42 can be connected using the screw-type lamp base connection method specified in the national standard. For example, for a high-power bulb rail lamp 200, a standard interface such as E27 or E40 can be used to achieve a threaded connection between the lamp holder 22 and the lamp base 42. Conversely, for low-power lamps using a rotating snap-fit ​​connection method, a standard interface such as B14 specified in the national standard can be used. The specific interface specification and model used can be selected according to national standard requirements and usage needs, and will not be detailed here.

[0051] Adopting a nationally standardized interface structure improves the compatibility with different bulb bodies 4 and lamp holder structures 100, reducing R&D and production costs. It also lowers the barrier to entry for users in maintenance and replacement, allowing them to choose similar products from different brands for compatibility, making it more user-friendly for future selection.

[0052] The above description is merely an example and illustration of the structure of this utility model, and while the description is quite specific and detailed, it should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these obvious substitutions all fall within the protection scope of this utility model.

Claims

1. A lamp holder structure for mounting a bulb lamp body, characterized in that, The lamp holder structure includes: A guide rail assembly includes a rail head and a connecting rod, one end of which is rotatably connected to the rail head; The rear cover includes a cover body and a lamp holder. The cover body has a mounting base and a mounting surface. The other end of the connecting rod is rotatably connected to the mounting base, and the lamp holder is fixed to the mounting surface. The heat dissipation component includes a cylindrical cover and a heat dissipation groove formed in the cover, wherein the bulb lamp body is disposed inside the cover; The bulb body is detachably connected to the lamp holder, and the cover is detachably connected to the cap.

2. The lamp holder structure according to claim 1, characterized in that, The cover surrounds and forms a receiving space, and the bulb lamp body is disposed in the receiving space; the cover is close to the bulb lamp body, or there is a gap between the cover and the bulb lamp body.

3. The lamp holder structure according to claim 1, characterized in that, The back cover also has a rim, which is formed by extending from the edge of the cover body away from the mounting surface, and the cover body is fastened to the rim.

4. The lamp holder structure according to claim 3, characterized in that, The edging is provided with a locking block, and the cover is provided with a locking groove. The locking groove is circumferentially opened on the side of the cover near the cover body. The locking block is engaged and connected in the locking groove. The outer side wall of the edging abuts against the inner side wall of the cover body.

5. The lamp holder structure according to claim 3, characterized in that, The mounting base is disposed on the inner side of the surrounding edge, and the mounting base extends protruding away from the mounting surface. The mounting base is provided with a mounting groove, and the end of the connecting rod is installed in the mounting groove.

6. The lamp holder structure according to claim 1, characterized in that, The rear cover is also provided with a mounting post, which is disposed on the mounting surface. The lamp holder is provided with a positioning hole, and the mounting post is inserted into the positioning hole. Fasteners pass through the mounting post and are fixedly connected in the positioning hole.

7. A bulb rail light, characterized in that, Includes a bulb lamp body and a lamp holder structure as described in any one of claims 1-6; The bulb lamp body includes a lamp body and a lamp head, the lamp head is disposed at the end of the lamp body, and the lamp body is detachably installed in the lamp holder through the lamp head.

8. The bulb rail light according to claim 7, characterized in that, The lamp body includes a housing, a light-emitting component, a lens, and a light-emitting element. The light-emitting element and the housing together form a mounting chamber. The light-emitting component and the lens are disposed in the mounting chamber. The light-emitting component includes a circuit board and a light-emitting element. The light-emitting element is soldered and fixed on the circuit board, and the lens covers the light-emitting element.

9. The bulb rail light according to claim 8, characterized in that, The lamp holder has a slot, and the lamp head is screwed or snapped into the slot.

10. The bulb rail light according to claim 9, characterized in that, The slot is provided with a first electrical connector, and the lamp holder is provided with a second electrical connector, which is threadedly connected to the first electrical connector.