A bare light source luminaire clamp

CN224932672UActive Publication Date: 2026-11-03SHENZHEN NANFANG LIXUN TESTING CO LTD
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Patent Information

Application Number
CN202521685910.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-08
Publication Date
2026-11-03
Estimated Expiration
2035-08-08

AI Technical Summary

Technical Problem

The lack of suitable fixtures in the current technology for continuous temperature monitoring of bare light sources makes it impossible to test the heat resistance of lamps, resulting in safety hazards such as light source shattering and glass shards flying.

Method used

A bare light source lamp fixture fixture was designed, comprising a mounting base, a lamp holder, and a temperature detection module. The fixture temperature is monitored in real time using a temperature sensor, a microcontroller, an analog-to-digital converter, and a display screen. The detachable connection design ensures the stability and convenience of the detection module.

Benefits of technology

It enables real-time temperature monitoring of bare light source lamps, improves product quality control, reduces the risk of safety accidents, and enhances ease of use and reliability.

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Abstract

The utility model relates to the technical field of lamp fixture clamp, specifically, relates to a bare light source lamp fixture clamp. It is convenient for real -time monitoring the temperature change of bare light source, improves the control to product quality. Its structure includes installation base, lamp holder, the lamp holder is equipped with lamp fixture clamping structure, the lamp holder one end is detachably connected with installation base, the installation base is equipped with temperature detection module, the lamp holder is equipped with the installation cavity for placing lamp for away from installation base one end. The utility model sets up temperature detection module, and its temperature sensor real -time detection bare light source's work heat, has guaranteed the quality control to lamp, has reduced the accidental injury of user because of bare light source performance unqualified, and temperature detection module is equipped with installation base and is covered with lamp holder, has reduced outside interference. And detachable connection design is convenient to maintain, prolongs the service life of equipment, improves the convenience and reliability of use, the utility model improves the stability of product quality.
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Description

Technical Field

[0001] This utility model relates to the field of lamp clamping technology, and in particular to a bare light source lamp clamping device. Background Technology

[0002] A bare light source is a type of lighting device that does not undergo complex encapsulation, directly exposing its core light-emitting components to the external environment. These light sources continuously generate heat during operation. Temperature monitoring of bare light sources aims to track temperature changes in real time, promptly assess the heat accumulation in the core light-emitting components and surrounding environment, and determine whether the light source is operating within a safe heat resistance range, thereby enabling product optimization.

[0003] However, current technology lacks suitable fixtures for continuous temperature monitoring of bare light sources. The absence of a temperature monitoring module makes it impossible to determine whether the luminaire's heat resistance meets standards, making it difficult to control quality risks. Without temperature monitoring, these substandard luminaires, once installed and used, may shatter or shatter if they reach temperatures they cannot withstand during operation. Furthermore, since bare light sources lack encapsulation such as lampshades, flying glass shards can easily cause cuts, burns, and other accidental injuries to those nearby. Utility Model Content

[0004] The main purpose of this utility model is to provide a fixture for bare light sources, which facilitates real-time monitoring of temperature changes in the bare light source and improves the control of product quality.

[0005] The technical solution of this utility model is as follows:

[0006] A bare light source lamp fixture clamp includes a mounting base and a lamp holder. The lamp holder is provided with a lamp clamping structure. One end of the lamp holder is detachably connected to the mounting base. The mounting base is provided with a temperature detection module. The end of the lamp holder away from the mounting base is provided with a mounting cavity for placing the lamp.

[0007] In one possible implementation, the temperature detection module includes a temperature sensor, a microcontroller, an analog-to-digital converter, and a display screen;

[0008] The temperature sensor is located inside the lamp holder with its detection end facing the mounting cavity. The display screen is located outside the lamp holder. The temperature sensor, analog-to-digital converter, and display screen are all electrically connected to the microcontroller.

[0009] In one possible implementation, the mounting cavity is provided with a limiting groove for placing the lamp, the surface of the limiting groove is provided with a first elastic sheet, the surface of the first elastic sheet is provided with a first anti-slip groove, the first anti-slip groove is a strip structure and is parallel to the lamp installation direction.

[0010] In one possible implementation, the first elastic sheet is further provided with a second anti-slip groove. Both the first and second anti-slip grooves are provided in multiples. The first and second anti-slip grooves are linear structures and are staggered.

[0011] In one possible implementation, the lamp clamping structure is located at the end of the lamp holder away from the mounting base. The lamp clamping structure includes an adjustment knob, an adjustment bolt, a retaining ring, and a limiting shaft. The adjustment knob is threadedly connected to the adjustment bolt. Both ends of the limiting shaft are fixedly connected to the mounting cavity. One end of the adjustment bolt passes through one side of the lamp holder, and the other end is rotatably connected to the retaining ring. The retaining ring is slidably connected to the limiting shaft.

[0012] In one possible implementation, the surface of the retaining ring is provided with a second elastic sheet, the area of ​​the second elastic sheet facing the limiting groove being equal to the area of ​​the retaining ring facing the limiting groove.

[0013] In one possible implementation, both the first anti-slip groove and the second anti-slip groove have arc-shaped cross-sections.

[0014] In one possible implementation, the surface of the adjustment knob is provided with anti-slip texture, and the cross-section of the anti-slip texture is an arc-shaped structure.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] Place the bare light source lamp into the mounting cavity of the lamp holder, and rotate the adjustment knob to move the adjusting bolt along the limiting shaft, ensuring the retaining ring fits tightly against the lamp and is securely fixed. When the lamp is operating, the temperature detection module on the mounting base monitors the temperature in real time via a temperature sensor, and the data is processed by the microcontroller and displayed on the screen.

[0017] This invention incorporates a temperature detection module, whose temperature sensor monitors the operating heat of the bare light source in real time, ensuring quality control of the luminaire. The temperature detection module is mounted on the mounting base and covered by the luminaire holder, reducing external interference. Furthermore, the detachable connection design facilitates maintenance; the temperature module remains stable even when the luminaire holder is removed, extending equipment lifespan and improving ease of use and reliability. It also reduces the risk of accidental injury to users due to the substandard heat resistance of the bare light source, thus improving product quality stability. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this embodiment;

[0020] Figure 2 This is a schematic diagram of the temperature sensor in this embodiment;

[0021] Figure 3 This is a schematic diagram of the lamp clamping structure in this embodiment;

[0022] Figure 4 This is a cross-sectional view of this embodiment;

[0023] Figure 5 This is a partial enlarged view of the temperature detection module in this embodiment.

[0024] Explanation of icon numbers:

[0025] 1. Mounting base; 2. Lamp holder; 21. Mounting cavity; 23. Limiting groove; 3. Temperature detection module; 31. Temperature sensor; 32. Microcontroller; 33. Analog-to-digital converter; 34. Display screen; 4. Lamp clamping structure; 41. Adjustment knob; 411. Anti-slip texture; 42. Adjustment bolt; 43. Snap ring; 44. Limiting shaft; 51. First elastic piece; 511. First anti-slip groove; 512. Second anti-slip groove; 52. Second elastic piece.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.

[0028] like Figures 1-5As shown, this embodiment proposes a bare light source lamp fixture clamp, the structure of which includes a mounting base 1 and a lamp holder 2. The lamp holder 2 is provided with a lamp clamping structure 4. As the core component of this embodiment, the mounting base 1 provides a stable support foundation for the whole, the lamp holder 2 serves as the main body for carrying the lamp, and the lamp clamping structure 4 realizes the stable fixation of the lamp. The three together constitute the basic functional framework of this embodiment, ensuring the positional stability of the lamp during testing.

[0029] One end of the lamp holder 2 is detachably connected to the mounting base 1, improving the flexibility and maintenance convenience of this embodiment. The mounting base 1 is equipped with a temperature detection module 3, allowing users to observe the heat changes of the lamp. The end of the lamp holder 2 furthest from the mounting base 1 has a mounting cavity 21 for placing the lamp. The mounting cavity 21 improves the stability and compatibility of the lamp during testing. Bare light source lamps lack outer casing protection and are relatively fragile, requiring precise positioning and stable fixation during installation. The mounting cavity 21, as a dedicated accommodating space, provides circumferential restraint for the lamp, reducing the possibility of displacement or detachment due to vibration or collision during use.

[0030] like Figures 4-5 As shown, in this embodiment, the temperature detection module 3 includes a temperature sensor 31, a microcontroller 32, an analog-to-digital converter 33, and a display screen 34. The temperature sensor 31, the analog-to-digital converter 33, and the display screen 34 are all electrically connected to the microcontroller 32. This electrical connection method constructs an efficient and collaborative working system, ensuring smooth data transmission and command execution between the components. The temperature sensor 31, as the front-end detection element, is responsible for sensing the temperature of the lamp during operation. The microcontroller 32 acts as the data processing and control hub, capable of analyzing the collected information and issuing commands. The analog-to-digital converter 33 solves the conversion problem between the analog signal output by the temperature sensor 31 and the digital signal that the microcontroller 32 can process, ensuring the accuracy of data transmission. The display screen 34, as the terminal output device, intuitively presents the temperature information to the user. The combination of these four components forms a complete temperature detection closed loop, enabling smooth implementation of the entire process from signal acquisition, conversion, processing to display. This avoids problems such as temperature detection failure or excessive errors due to missing components or functional mismatch, providing reliable technical support for the safe operation of bare light source lamps.

[0031] The temperature sensor 31 is located inside the lamp holder 2, with its detection end facing the mounting cavity 21. This layout design greatly improves the accuracy and timeliness of temperature detection. Because the temperature sensor 31 is installed inside the lamp holder 2 and its detection end directly faces the mounting cavity 21 where the lamp is placed, it can directly and closely contact the heat generated during lamp operation, reducing heat loss and delay during transmission and effectively lowering the risk of lamp damage or safety accidents caused by delayed temperature detection.

[0032] The display screen 34 is located on the outside of the lamp holder 2, which fully considers the user's convenience. Users can intuitively and clearly observe the temperature value inside the mounting cavity 21 without disassembling the lamp holder 2 or using other tools, facilitating real-time monitoring of the lamp's operating status. Users can quickly obtain real-time temperature information through the display screen 34, enabling timely judgment and response. For example, when the temperature is too high, they can quickly take measures such as cooling down or turning off the lamp, improving the convenience and safety of this embodiment during use, and also enhancing the user experience of the product.

[0033] In this embodiment, the microcontroller 32 is an STM32F103C8T6 microcontroller. Its advantages include: efficient data processing, rich peripheral interfaces, suitable for connecting components such as temperature sensors, high cost-effectiveness, strong practicality, and compatibility with temperature detection module requirements. The temperature sensor 31 is an MLX90614 infrared sensor, which offers advantages such as: non-contact temperature measurement, high precision, and digital I / O. 2 With C output and built-in signal processing circuitry, it can directly connect to the STM32F103C8T6's I / O pin. 2 The C1 interface (PB6 / SCL, PB7 / SDA) connection eliminates the need for an additional ADC, simplifying circuit design and ensuring efficient data transmission.

[0034] In this embodiment, the number and specific detection positions of the temperature sensors 31 can be flexibly adjusted according to the environment, functional requirements and on-site conditions in the actual application scenario, and no limitation is made in this embodiment.

[0035] like Figure 1 As shown, in this embodiment, the mounting cavity 21 is provided with a limiting groove 23 for placing the lamp, providing a positioning reference for the bare light source lamp. Through its groove structure, the radial displacement of the lamp within the mounting cavity 21 is limited, reducing positional offset caused by vibration, tilting, etc., ensuring the stability of the lamp after fixing, and improving the reliability of the overall structure. The surface of the limiting groove 23 is provided with a first elastic sheet 51. The first elastic sheet 51 utilizes the elastic deformation characteristics of the material to adapt to slight differences in bare light source lamps of different sizes. Through the elastic pressure of the material, it tightly adheres to the surface of the lamp, which not only reduces the squeezing damage to the bare light source caused by rigid contact, but also enhances the tightness of the clamping and prevents the lamp from loosening.

[0036] The surface of the first elastic sheet 51 is provided with a first anti-slip groove 511. The first anti-slip groove 511 increases the contact friction between the elastic sheet and the surface of the lamp, further reducing the sliding of the lamp in the mounting cavity 21. Especially in environments where the lamp heats up and causes slight surface expansion or vibration, it can maintain a stable clamping state and reduce wear caused by relative displacement. The first anti-slip groove 511 has a strip-shaped structure and is parallel to the lamp installation direction. This design does not hinder the smooth insertion and removal of the lamp along the installation direction, while effectively resisting external forces perpendicular to the installation direction. It ensures the convenience of installation and disassembly, and specifically strengthens the anti-slip effect in key directions, balancing operational convenience and structural stability.

[0037] In this embodiment, the first elastic sheet 51 is also provided with a second anti-slip groove 512, which further increases the density of the concave-convex structure on the surface of the first elastic sheet 51. Through the synergistic effect of multiple anti-slip grooves, the friction with the surface of the lamp is significantly improved, and the anti-slip effect is enhanced. Several first anti-slip grooves 511 and second anti-slip grooves 512 are provided. The multiple anti-slip grooves expand the coverage of frictional contact. Even if there is a slight deviation in the installation position of the lamp, it can still contact the lamp surface through the first anti-slip grooves 511 and second anti-slip grooves 512 at different positions, ensuring the stability of the anti-slip function and avoiding lamp loosening due to single-point friction failure. The first anti-slip grooves 511 and second anti-slip grooves 512 are both linear structures and are staggered along the first elastic sheet 51, forming a grid-like friction structure. This structure can resist sliding parallel to the installation direction and also hinder displacement perpendicular to the installation direction, achieving all-directional anti-slip. At the same time, the staggered texture can disperse the impact force generated by lamp vibration, reducing local wear and balancing anti-slip performance and structural durability.

[0038] In this embodiment, the cross-sections of the first anti-slip groove 511 and the second anti-slip groove 512 are both arc-shaped. Compared with right-angled or acute-angled grooves, this avoids excessive stress concentration at the groove edges. When the first elastic sheet 51 is deformed under force, the arc-shaped groove can disperse local tension, reducing material fatigue or fracture caused by repeated deformation during long-term use and extending the service life of the elastic sheet. In addition, the arc-shaped structure is easier to form through processes such as stamping during processing, reducing burrs or processing defects and improving production efficiency and structural consistency.

[0039] In this embodiment, the first elastic sheet 51 is made of silicone rubber. Its advantages include strong adaptability; thanks to its excellent elastic deformation, it can accommodate dimensional differences of ±0.5-2mm in bare light source luminaires, and it has good elastic recovery, preventing plastic deformation over long-term use. Furthermore, its soft texture allows for flexible contact, avoiding squeezing and scratching the bare light source. Its moderate coefficient of friction and enhanced elastic pressure improve the tightness of the fit and provide excellent anti-loosening effect. It also has a wide temperature resistance range, can withstand the heat of the luminaire, is not prone to aging and loss of elasticity, and has excellent insulation properties, eliminating the risk of electrical conductivity and ensuring high safety, fully meeting functional requirements.

[0040] In this embodiment, the lamp clamping structure 4 includes an adjustment knob 41, an adjustment bolt 42, a retaining ring 43, and a limiting shaft 44. The adjustment knob 41 and the adjustment bolt 42 are threadedly connected, and the force is transmitted through the threaded connection. Rotating the adjustment knob 41 can drive the adjustment bolt 42 to move axially, providing a convenient way to adjust the clamping force and making it easy for users to adjust flexibly according to the size of the lamp.

[0041] This embodiment features two limiting shafts 44, which provide more stable fixation for the retaining ring 43. Both ends of the retaining ring 43 are slidably connected to each limiting shaft 44, and both ends of the limiting shafts 44 are fixedly connected to the inner wall of the lamp holder 2. This allows the retaining ring 43 to be simultaneously driven by the adjusting bolt 42 and guided by the limiting shafts 44, enabling the retaining ring 43 to move smoothly along each limiting shaft 44 under the action of the adjusting bolt 42. This allows for precise adjustment of the distance between the retaining ring 43 and the inner wall of the lamp holder 2, achieving stable clamping of lamps of different sizes while balancing adjustment flexibility and clamping reliability.

[0042] In this embodiment, the surface of the adjustment knob 41 is provided with anti-slip texture 411. This design effectively prevents slippage between the user's hand and the adjustment knob 41 when rotating it, improving the stability and accuracy of operation. At the same time, the anti-slip texture 411 design makes adjusting the clamping force of the lamp easier for the user, allowing for easy rotation of the adjustment knob 41 without applying excessive pressure, thus optimizing the operating experience.

[0043] The anti-slip texture 411 has an arc-shaped cross-section. Compared with right angle or acute angle structures, the arc-shaped structure is easier to form through conventional processes such as injection molding and stamping. Moreover, it is less likely to produce burrs and defects during the production process, which reduces the manufacturing difficulty and cost.

[0044] like Figure 3 As shown, in this embodiment, the surface of the retaining ring 43 is covered with a second elastic sheet 52. The second elastic sheet 52 has the same structure and material as the first elastic sheet 51. Utilizing the elastic properties of the second elastic sheet 52, as well as its first anti-slip groove 511 and second anti-slip groove 512, the retaining ring 43 can better fit the lamp fixture during clamping. At the same time, the mesh-like friction structure enhances friction and stability, reducing lamp fixture loosening. The area of ​​the second elastic sheet 52 facing the limiting groove is equal to the area of ​​the retaining ring 43 facing the limiting groove 23. This equal area design ensures that the second elastic sheet 52 can completely cover the contact surface of the retaining ring 43 facing the limiting groove 23, so that the elastic force is evenly distributed in the contact area between the retaining ring 43 and the lamp fixture, maximizing the contact area between the elastic sheet and the lamp fixture, increasing friction to enhance the anti-slip effect, and taking into account both clamping stability and protection of the bare light source.

[0045] This embodiment is mainly applicable to rechargeable LED bare light source lamps. Non-energy storage lamps can also be powered by an external power source; this embodiment does not impose specific limitations. The shape of the lamp can be a rotating body structure, an axisymmetric structure, etc., mainly cylindrical or spherical, for easy clamping. The clamping range of the clamp should be designed according to the specifications of the lamp being tested. During the inspection process, the lamp is fixed by a surrounding clamp while the temperature detection point of the lamp is aligned with the temperature sensor 31. At the same time, the flexible deformation of the first elastic sheet 51 and the second elastic sheet 52 can adapt to the lamp base or housing, avoiding excessive local pressure that could cause deformation or breakage of the housing.

[0046] Because the temperature of a lamp continuously rises during operation, especially when it is charging and lit simultaneously, it is more prone to overheating. Therefore, it is even more necessary to monitor its temperature to determine whether the heat generation or material performance of the lamp meets the standards under various conditions. This is to prevent substandard lamps from being installed and used, and to prevent substandard bare light sources or lamps from being manufactured and installed, which could lead to quality problems and accidental injuries to people in the vicinity.

[0047] The working process of this embodiment is as follows:

[0048] 1. Install and fix the mounting base 1 with fasteners, place the bare light source lamp into the lamp holder 2, so that one side of it abuts against the limiting groove 23. At the same time, the first elastic piece 51 on the surface of the limiting groove 23 conforms to the surface of the lamp through its own elastic deformation. The first anti-slip groove 511 and the second anti-slip groove 512 of the first elastic piece 51 further prevent the lamp from sliding through friction, thus achieving the initial positioning of the lamp.

[0049] 2. Rotate the adjustment knob 41 to drive the adjustment bolt 42 to move axially, so that the retaining ring 43 slides smoothly under the guidance of the limiting shaft 44 until the second elastic piece 52 on the surface of the retaining ring 43 is tightly attached to the other side of the lamp. Through the synergistic effect of the elastic force and each anti-slip groove, the lamps of different diameters are firmly clamped.

[0050] 3. When the light fixture is turned on, the temperature detection module 3 is activated simultaneously. The infrared temperature sensor 31 begins to collect the temperature signal generated by the light fixture and converts the analog signal into a digital signal through the analog-to-digital converter 33, which is then transmitted to the microcontroller 32. After processing the temperature data, the microcontroller 32 displays the results in real time on the display screen 34 located on the outside of the light fixture base 2, allowing the testing personnel to intuitively observe temperature changes and respond promptly to overheating. Alternatively, the data can be transmitted to the corresponding detection system for recording and analysis via a communication or transmission module, which will not be elaborated further in this embodiment.

[0051] 4. After the test is completed, the retaining ring 43 can be released by rotating the adjustment knob 41 in the opposite direction, and the lamp can be removed.

[0052] 5. If maintenance or replacement of parts is required for this embodiment, the lamp holder 2 and the mounting base 1 can be disassembled and separated.

[0053] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this application 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, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0054] The above are merely preferred embodiments of this application and are not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A bare light source lamp fixture clamp, comprising a mounting base (1) and a lamp holder (2), wherein the lamp holder (2) is provided with a lamp clamping structure (4), characterized in that, One end of the lamp holder (2) is detachably connected to the mounting base (1). The mounting base (1) is provided with a temperature detection module (3). The lamp holder (2) has a mounting cavity (21) for placing lamps at the end away from the mounting base (1). The temperature detection module (3) includes a temperature sensor (31), a microcontroller (32), an analog-to-digital converter (33), and a display screen (34). The temperature sensor (31) is located inside the lamp holder (2) with its detection end facing the mounting cavity (21). The display screen (34) is located outside the lamp holder (2). The temperature sensor (31), analog-to-digital converter (33), and display screen (34) are all electrically connected to the microcontroller (32).

2. The bare light source fixture according to claim 1, characterized in that, The mounting cavity (21) is provided with a limiting groove (23) for placing the lamp. The surface of the limiting groove (23) is provided with a first elastic sheet (51). The surface of the first elastic sheet (51) is provided with a first anti-slip groove (511). The first anti-slip groove (511) has a strip-shaped structure and is parallel to the lamp installation direction.

3. A bare light source fixture according to claim 2, characterized in that, The first elastic sheet (51) is also provided with a second anti-slip groove (512). There are several of the first anti-slip groove (511) and the second anti-slip groove (512). The first anti-slip groove (511) and the second anti-slip groove (512) are both linear structures and are staggered.

4. A bare light source fixture according to claim 2 or 3, characterized in that, The lamp clamping structure (4) is located at the end of the lamp holder (2) away from the mounting base (1). The lamp clamping structure (4) includes an adjustment knob (41), an adjustment bolt (42), a retaining ring (43), and a limiting shaft (44). The adjustment knob (41) is threadedly connected to the adjustment bolt (42). Both ends of the limiting shaft (44) are fixedly connected to the mounting cavity (21). One end of the adjustment bolt (42) passes through one side of the lamp holder (2), and the other end is rotatably connected to the retaining ring (43). The retaining ring (43) is slidably connected to the limiting shaft (44).

5. A bare light source fixture according to claim 4, characterized in that, The surface of the retaining ring (43) is provided with a second elastic sheet (52), and the area of ​​the second elastic sheet (52) facing the limiting groove is equal to the area of ​​the retaining ring (43) facing the limiting groove (23).

6. A bare light source fixture according to claim 5, characterized in that, The cross-sections of the first anti-slip groove (511) and the second anti-slip groove (512) are both arc-shaped structures.

7. A bare light source fixture according to claim 6, characterized in that, The surface of the adjustment knob (41) is provided with anti-slip texture (411), and the cross-section of the anti-slip texture (411) is an arc-shaped structure.