Light source mounting structure and lighting device

Abstract

This utility model discloses a light source mounting structure, including a lamp body, a light source element, and a lens bracket. The lamp body includes a lamp shell and a first substrate, the first substrate having a first mounting surface. The light source element is fixedly connected to the first mounting surface and includes a second substrate and a light-emitting element, the second substrate having a second mounting surface. The lens bracket includes a main body and a first mounting portion, the first mounting portion being fixedly connected to the first substrate. The first mounting portion includes a first protrusion and a second protrusion, both of which are malleable. The first protrusion abuts against the first mounting surface, and the second protrusion abuts against the second mounting surface. This light source mounting structure uses malleable first and second protrusions that abut against the first and second substrates respectively, ensuring the stability of the light source element while preventing damage to the ceramic second substrate. This utility model also provides a lighting device including this light source mounting structure.

Description

Technical Field

[0001] This utility model belongs to the technical field of LED lighting fixtures, specifically relating to a light source mounting structure and lighting device. Background Technology

[0002] LED lighting fixtures generally include a lamp housing, a light source component, and optical components. The lamp housing contains a heat sink, and the light source component is mounted on the heat dissipation surface of the heat sink. The commonly used substrates for the light source component are ceramic substrates and aluminum substrates.

[0003] Existing methods for fixing light source components include the following: (1) Screw fixing: Screw holes are pre-drilled on the substrate and heat sink of the light source component, and the light source component is fastened to the heat sink by passing metal screws or plastic screws through the screw holes. However, this fastening structure is prone to breaking the substrate during installation, especially ceramic substrates, causing the substrate to crack and affecting its use; (2) Clip fixing: Clips are provided on the substrate, and slots are provided on the heat sink. The substrate and heat sink are fixed by clips engaging with the slots. However, when thermally conductive adhesive needs to be applied, uneven bonding surfaces are prone to occur, resulting in loose engagement.

[0004] Compared to aluminum substrates, ceramic substrates are prepared by mixing alumina and aluminum nitride ceramic materials with organic binders. They feature high thermal conductivity, low coefficient of thermal expansion, high temperature resistance, and chemical stability, making them suitable for the thermal management requirements of chip packaging. However, the use of screws with openings and adhesive clips to fix the light source components on the ceramic substrate is prone to misalignment and cracking of the ceramic sheet. Therefore, the mounting structure of the light source components needs to be optimized. Utility Model Content

[0005] To address the shortcomings of the prior art, this invention provides a light source mounting structure employing a first and second convex strip that can be plastically deformed, respectively abutting against a first and a second substrate. This ensures the stability of the light source component while preventing damage to the ceramic second substrate. This invention also provides a lighting device incorporating this light source mounting structure.

[0006] The technical effects to be achieved by this utility model are realized through the following technical aspects:

[0007] In a first aspect, this utility model provides a light source mounting structure, comprising:

[0008] The lamp body includes a lamp housing and a first substrate disposed in the lamp housing, the first substrate having a first mounting surface;

[0009] A light source component is fixedly connected to the first mounting surface. The light source component includes a second substrate and a light-emitting element adhered and fixed to the second substrate. The second substrate has a second mounting surface.

[0010] A lens holder includes a main body and a first mounting portion disposed at one end of the main body. The first mounting portion is fixedly connected to the first substrate. The first mounting portion includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion are plastically deformable.

[0011] The first protrusion abuts against the first mounting surface, and the second protrusion is located inside the first protrusion and abuts against the second mounting surface.

[0012] In some embodiments, the heights of the first protrusion and the second protrusion are H1 and H2, respectively, and the height of the second substrate is H0, with the relationship: H1≥H2+H0.

[0013] In some embodiments, the second protrusion has an arcuate structure and surrounds a first mounting area, the light-emitting element is disposed in the first mounting area, and the light-emitting element has a gap with the inner wall of the second protrusion.

[0014] In some embodiments, the first mounting portion includes a third protrusion, which is disposed outside the second protrusion; one end of the third protrusion is connected to the second protrusion, and a positioning groove is provided between the other end and the adjacent third protrusion.

[0015] In some embodiments, the third protrusion surrounds and forms a second mounting area, and the light source is disposed in the second mounting area; the second protrusion has a buffer block at its end, and the buffer block protrudes from the first mounting area toward the third protrusion.

[0016] In some embodiments, the first mounting portion further includes reinforcing ribs, which are radially disposed on the outer side of the second protrusion.

[0017] In some embodiments, the first mounting portion has an annular structure and further includes a positioning block and a wire guide groove. The positioning block is disposed outside the third protrusion, and the wire guide groove is radially formed in the second mounting portion.

[0018] In some embodiments, the first mounting part further includes a mounting post with a through hole; the first substrate is provided with a mounting hole and a positioning hole, the positioning block is inserted into the positioning hole, and the fastener passes through the through hole and is fixedly installed in the mounting hole.

[0019] In some embodiments, the lens holder is an integrally injection-molded PP plastic part, and the second substrate is a thermally conductive ceramic circuit board.

[0020] Secondly, this utility model provides a lighting device including an anti-glare ring, a lens, and the aforementioned light source mounting structure. The lens bracket further includes a second mounting part, which is disposed at the other end of the main body. The main body has a mounting cavity, and the lens is mounted in the mounting cavity and located above the light source.

[0021] In summary, this utility model has at least the following advantages:

[0022] 1. The light source mounting structure provided by this utility model adopts a first convex strip and a second convex strip that can be plastically deformed, respectively abutting against the first substrate of the lamp body and the second substrate of the light source component, ensuring the stability of the light source component while preventing the ceramic second substrate from being crushed.

[0023] 2. In the lamp provided by this utility model, after the light source component is flatly attached to the first substrate of the lamp body, the lens bracket is initially positioned by inserting a positioning block into the positioning hole. Then, the first and second protrusions are pressed onto the first and second mounting surfaces respectively. Since the lens bracket is a PP plastic component, the contact position of the first and second protrusions can be compressed and deformed during the pressing process, so as not to damage the ceramic second substrate. At the same time, it ensures the accurate installation of the light source component and prevents displacement, thereby ensuring the light output effect. Attached Figure Description

[0024] Figure 1 This is an exploded view of the light source mounting structure of Embodiment 1 of this utility model.

[0025] Figure 2 This is a top view of the light source mounting structure of Embodiment 1 of this utility model.

[0026] Figure 3 for Figure 2 Cross-sectional view along line AA.

[0027] Figure 4 for Figure 3 Enlarged diagram of part B.

[0028] Figure 5 This is a schematic diagram of the lens holder in Embodiment 1 of this utility model.

[0029] Figure 6 This is a bottom view of the lens holder according to Embodiment 1 of this utility model.

[0030] Figure 7 This is an exploded view of the lighting device according to Embodiment 3 of this utility model.

[0031] Marked in the image:

[0032] 100 - Light source mounting structure;

[0033] 1-Lamp body;

[0034] 11-First substrate, 12-Lamp housing,

[0035] 111-First mounting surface, 113-Mounting hole, 114-Positioning hole, 121-Accommodation chamber, 122-Heat dissipation fins;

[0036] 2-Light source components;

[0037] 21-Light-emitting element, 22-Second substrate, 221-Second mounting surface, 222-Positioning angle,

[0038] 223 - Third mounting surface;

[0039] 3-Lens holder,

[0040] 31-First mounting section, 32-Second mounting section;

[0041] 301 - Mounting cavity, 310 - First mounting area, 311 - First protrusion, 312 - Second protrusion.

[0042] 313 - Third protrusion, 314 - Positioning groove, 315 - Buffer block, 316 - Reinforcing rib, 317 - Positioning block.

[0043] 318 - Cable tray, 319 - Mounting post, 3130 - Second mounting area, 3190 - Through hole;

[0044] 4-Fasteners;

[0045] Z-Height Direction. Detailed Implementation

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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.

[0050] Example 1

[0051] refer to Figures 1-5 This embodiment provides a light source mounting structure 100 for use in lighting fixtures such as spotlights, downlights, or ceiling lights that have a substrate structure and emit light through a lens. The light source mounting structure 100 includes a lamp body 1, a light source element 2, and a lens support 3, with the light source element 2 and lens support 3 mounted in the lamp body 1. The lamp body 1 includes a first substrate 11 and a lamp housing 12. The lamp housing 12 has a columnar or cylindrical structure. The first substrate 11 is disposed within the lamp housing 12, and the first substrate 11 and the lamp housing 12 surround to form a receiving cavity 121, which is a light-emitting cavity. The light source element 2, the lens support 3, and other optical components are mounted in the receiving cavity 121. Multiple heat dissipation fins 122 may be provided at the rear end of the first substrate 11. In some embodiments, the lamp housing 12 may also be divided into another receiving cavity at the rear end of the first substrate 11 for mounting a power supply component.

[0052] The lamp body 1 can be a plastic part or a metal part. In some embodiments, the lamp housing 12 and the first substrate 11 can be integrally injection molded to form an integral plastic lamp body structure, or integrally stamped to form an integral metal lamp body structure. In other embodiments, the lamp housing 12 and the first substrate 11 can be separate structures, fixed together by bonding or welding.

[0053] The first substrate 11 is provided with a first mounting surface 111, which is normally a plane. The light source 2 is fixedly mounted on the first mounting surface 111. The light source 2 includes a light-emitting element 21 and a second substrate 22. The light-emitting element 21 is attached and fixed on the second substrate 22.

[0054] The second substrate 22 is a ceramic substrate, a circuit board manufactured using thermally conductive ceramic powders of alumina and aluminum nitride and an organic binder at temperatures below 250°C. The second substrate 22 exhibits excellent thermal conductivity and high-temperature resistance. Based on the ceramic material, the second substrate 22, after mounting the light-emitting element 21, can be applied to lighting environments with high requirements for heat dissipation, temperature resistance, and stability, such as high-power LED lighting and high-temperature ambient lighting. In this embodiment, the second substrate 22 is provided with a second mounting surface 221. The light-emitting element 21 is soldered to the second mounting surface 221 using a COB light source module, thereby bonding and fixing the light-emitting element 21 to the second substrate 22.

[0055] The lens holder 3 includes a main body 30 and a first mounting portion 31, which is disposed at the end of the main body 30 facing the light source 2. The lens holder 3 is fixedly connected to the light source 2 and the lamp body 1 through the first mounting portion 31. Specifically, the first mounting portion 31 is fixedly connected to the first substrate 11, and the first mounting portion 31 includes a first protrusion 311 and a second protrusion 312, with the second protrusion 312 located inside the first protrusion 311.

[0056] Since the lens holder 3 in this embodiment is a PP (polypropylene) plastic part, the first protrusion 311 and the second protrusion 312 can be plastically deformed. After the light source 2 is installed on the first substrate 11, the lens holder 3 is then installed on the first substrate 11. At this time, the first protrusion 311 abuts against the first mounting surface 111, and the second protrusion 312 abuts against the second mounting surface 221.

[0057] Combination Figure 3 and Figure 4 In the height direction Z, the height of the first protrusion 311 is H1, the height of the second protrusion 312 is H2, and the height of the second substrate is H0. H0, H1 and H2 have the following relationship: H1≥H2+H0.

[0058] During the installation process where the second protrusion 312 abuts against the second mounting surface 221 of the second substrate 22, while the lens bracket 3 presses against the light source 2, the second protrusion 312 can undergo plastic deformation, thus preventing damage to the ceramic second substrate 22. Simultaneously, H0, H1, and H2 have the relationship: H1 ≥ H2 + H0; when an adhesive layer is applied between the second substrate 22 and the first substrate 11, the first protrusion 311 can also undergo plastic deformation, thereby abutting against the first substrate 11 at the contact point, ensuring that the second protrusion 312 can be pressed firmly against the second substrate 22.

[0059] refer to Figure 3 , Figure 5 and Figure 6In the first mounting portion 31, the second protrusion 312 has an arc-shaped structure. In this embodiment, two second protrusions 312 are arranged to surround and form a first mounting area 310. The light-emitting element 21 is located in the first mounting area 310, and there is a certain gap between the light-emitting element 21 and the inner wall of the second protrusion 312 to prevent the second protrusion 312 from touching and scratching the light-emitting element 21 when pressing the second substrate 22.

[0060] Furthermore, the first mounting portion 31 is provided with a third protrusion 313, which is a straight line structure disposed outside the second protrusion 313. One end of the third protrusion 313 is connected to the second protrusion 312, and the other end is provided with a positioning groove 314 between itself and the adjacent third protrusion. The positioning groove 314 is a triangular slot, used to observe and position the positioning angle 222 provided on the second substrate 22 during installation.

[0061] The third protrusion 313 surrounds and forms the second mounting area 3130, in which the light source element 2 is disposed. In an understandable implementation, the second protrusion 312 presses against the second substrate 22, causing the light-emitting element 21 to be mounted in the first mounting area 310; the third protrusion 313 surrounds the second substrate 22, that is, the third protrusion 313 abuts against the outer side wall of the second substrate 22 on its outer side, thereby restricting the displacement of the second substrate 22 in the horizontal direction.

[0062] The second protrusion 312 has a buffer block 315 at its end. In this embodiment, the buffer block 315 is arranged in an arc shape at both ends of the second protrusion 312. The bending arc of the buffer block 315 is greater than that of the second protrusion 312, and it protrudes from the first mounting area 310 toward the third protrusion 313.

[0063] In some embodiments, the buffer block 315 is connected to the second protrusion 312, so that the third protrusion 313 can absorb the reaction force of the second substrate 22 acting on the second protrusion 312, so that the second protrusion 312 can be better plastically deformed and the ceramic material of the second substrate 22 can be avoided from being damaged.

[0064] In some embodiments, the first mounting portion 31 is further provided with reinforcing ribs 316, which are radially arranged on the outer side of the second protrusion 312. Some reinforcing ribs 316 are connected to the second protrusion 312 and the third protrusion 313, while others are connected to the second protrusion 312 and the positioning groove 314. This further allows the second protrusion 312 to undergo better plastic deformation, preventing damage to the ceramic substrate 22.

[0065] Furthermore, the first mounting portion 31 has a ring-shaped structure, and a positioning block 317, a wire groove 318, and a mounting post 319 are also provided on the first mounting portion 31. In this embodiment, the positioning block 317 is located on the outer side of the third protrusion 313 and the inner side of the first protrusion 311.

[0066] A wire guide groove 318 is radially formed in the first mounting portion 31 and connects to the first mounting area 310. After the positive and negative wires of the external power supply are respectively soldered to the second substrate 22, they are led out to the outside through the wire guide groove 318. The wire guide groove 318 prevents the power output wires from surrounding and damaging the lens bracket, and also prevents the power output wires from interfering with the normal emission of light.

[0067] The mounting post 319 has a through hole 3190; correspondingly, the first substrate 11 has a mounting hole 113 and a positioning hole 114. When the lens bracket 3 is installed onto the lamp body 1, the positioning block 317 is inserted into the positioning hole 114, and then the fastener 4, such as a screw, passes through the through hole 3190 and is fixedly installed in the mounting hole 113.

[0068] During installation, the third mounting surface 223 of the second substrate 22 is coated with thermally conductive silicone grease and then mounted in the first mounting surface 111. The positioning block 317 of the lens bracket 3 is inserted into the positioning hole 114 of the lamp body 1. The position of the second substrate is adjusted, and the positioning angle 222 on the second substrate 22 is observed and positioned through the triangular slotted positioning groove 314. The light source component 2 is only fully positioned when the positioning angle 222 is completely presented in the positioning groove 314. When the fasteners lock the lens bracket to the first substrate, the second substrate will not be damaged.

[0069] The light source mounting structure provided in this embodiment uses a first and second convex strip that can be plastically deformed, which respectively abut against the first substrate of the lamp body and the second substrate of the light source component, ensuring the stability of the light source component while preventing the ceramic second substrate from being crushed.

[0070] Example 2

[0071] Please continue to refer to this. Figures 1-6 This embodiment describes the fit between the lens bracket, the lamp body, and the light source.

[0072] (1) The surface flatness of the first mounting surface is good.

[0073] like Figure 3 and Figure 4As shown, with the first mounting surface 111 having good flatness, the second protrusion of the lens holder 3 abuts against the second mounting surface 221 of the second substrate 22. The third mounting surface 223 of the second substrate 22 contacts the first mounting surface 111 of the first substrate 11. The lens holder 3, the light source 2, and the first substrate 11 interact, with the first protrusion 311 abutting against the first mounting surface 111 and the second protrusion 312 abutting against the second mounting surface 221, thereby pressing and fixing the light source 2. Since the lens holder 3 and the light source 2 are not interference-fitted, the ceramic second substrate will not be damaged during the installation of the lens holder 3.

[0074] (1) The surface flatness of the first mounting surface is poor.

[0075] If the surface flatness of the first mounting surface 111 is poor, compression will occur between the second protrusion 312 and the second mounting surface 222, and between the third mounting surface 223 and the first mounting surface 111. This will result in plastic compression deformation of the second protrusion 312.

[0076] In the first mounting portion 31, the first mounting area 310 is formed by the second protrusion 312 surrounding it; meanwhile, the lens bracket is made of PP material. Therefore, compared to a planar structure, the flexible first mounting area 310 makes it easier for the second protrusion 312 to deform.

[0077] The following is the proof process:

[0078] The elastic modulus of the ceramic substrate 22 is 200-400 GPa, while that of the modified PP is 1-1.5 GPa. The second substrate 22 is a ceramic sheet, a brittle material that hardly undergoes plastic deformation; if its strength exceeds its limit, it will break directly. Therefore, when the second protrusion 312 and the second substrate 22 come into contact and are compressed, the PP material will undergo elastoplastic deformation.

[0079] The yield strength of PP material is 20-35 MPa. When the yield strength exceeds 30 MPa, PP will undergo permanent deformation. According to the formula for calculating the contact area between the second substrate and the second protrusion:

[0080] P = F / A;

[0081] In the formula, P: yield strength of the material (MPa);

[0082] F: Applied pressure (N);

[0083] A: Contact area (mm) 2 );

[0084] Based on the above formulas, calculate respectively and The applied force and .

[0085] According to the simulation test results, the contact area between the second protrusion and the second substrate is A = 47.38. .

[0086]

[0087]

[0088] Therefore, when the force applied to the first mounting area 310 (including the two second protrusions) toward the second mounting surface is less than 947.6N, the elastic (plastic) deformation of the second protrusions of the PP lens holder is recoverable; that is, the lens holder 3 can continuously press the second substrate (ceramic sheet) of the light source. However, when the force applied to the second mounting surface of the first mounting area 310 (including the two second protrusions) is greater than 1421.4N, the elastic deformation of the second protrusions is irreversible and will result in permanent deformation. In other words, after the second protrusions of the lens holder press the second substrate of the light source for a period of time, the subsequent first protrusions will only contact the second substrate, playing a fixing role, but will not be able to provide sufficient force to press the light source.

[0089] In this embodiment, the fastener 4 is an M3 screw, which locks the lens bracket 4 into the first substrate 11 of the lamp body 1.

[0090] According to the formula for calculating the resultant force of a screw lock:

[0091]

[0092] In the formula:

[0093] d1: Minor diameter of screw thread;

[0094]

α

[0095] The allowable stress of M3 screws made of low-carbon steel (grade 4.8) is […]. = Between 133 and 167 MPa.

[0096] Through calculation

[0097]

[0098] Because F max =754.84N <F1=947.6N。

[0099] Therefore, the assumption that the elastic deformation of the first mounting area composed of the second protrusion in the PP lens holder is recoverable is valid, which also proves that the second protrusion of the lens holder will not damage the second substrate of the light source during the installation process.

[0100] Example 3

[0101] exist Figures 1-6 Based on reference Figure 7 This embodiment provides a lighting device, which includes, but is not limited to, spotlights, downlights, or ceiling lights. The lighting device includes an anti-glare ring 200, a lens 300, and the light source mounting structure 100 of Embodiment 1. The lens bracket 3 has a second mounting portion 32 at the other end of the main body 30. The main body 301 has a mounting cavity 301, in which the lens 300 is mounted. The lens 300 is positioned above the light source 2 and is used to process the light emitted from the light source to ensure uniform light output.

[0102] In the lamp provided in this embodiment, after the light source component is flatly attached to the first substrate of the lamp body, the lens bracket is initially positioned by inserting a positioning block into the positioning hole. Then, the first and second protrusions are pressed tightly onto the first and second mounting surfaces, respectively. Since the lens bracket is a PP plastic component, the contact position of the first and second protrusions can be compressed and deformed during the pressing process, preventing damage to the ceramic second substrate. At the same time, it ensures accurate installation of the light source component and prevents displacement, thus ensuring the light output effect.

[0103] 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 light source mounting structure, characterized in that, include: The lamp body includes a lamp housing and a first substrate disposed in the lamp housing, the first substrate having a first mounting surface; A light source component is fixedly connected to the first mounting surface. The light source component includes a second substrate and a light-emitting element that is attached and fixed to the second substrate. The second substrate is provided with a second mounting surface. as well as A lens holder includes a main body and a first mounting portion disposed at one end of the main body. The first mounting portion is fixedly connected to the first substrate. The first mounting portion includes a first protrusion and a second protrusion, and the first protrusion and the second protrusion are plastically deformable. The first protrusion abuts against the first mounting surface, and the second protrusion is located inside the first protrusion and abuts against the second mounting surface.

2. The light source mounting structure according to claim 1, characterized in that, In the height direction, the heights of the first protrusion and the second protrusion are H1 and H2, respectively, and the height of the second substrate is H0, with the following relationship: H1≥H2+H0.

3. The light source mounting structure according to claim 1, characterized in that, The second protrusion has an arc-shaped structure and surrounds to form a first mounting area. The light-emitting element is disposed in the first mounting area, and there is a gap between the light-emitting element and the inner wall of the second protrusion.

4. The light source mounting structure according to claim 3, characterized in that, The first mounting part includes a third protrusion, which is disposed outside the second protrusion; one end of the third protrusion is connected to the second protrusion, and a positioning groove is provided between the other end and the adjacent third protrusion.

5. The light source mounting structure according to claim 4, characterized in that, The third protrusion surrounds and forms a second mounting area, and the light source is disposed in the second mounting area; the second protrusion has a buffer block at its end, and the buffer block protrudes from the first mounting area toward the third protrusion.

6. The light source mounting structure according to claim 5, characterized in that, The first mounting part also includes reinforcing ribs, which are radially arranged on the outer side of the second protrusion.

7. The light source mounting structure according to claim 4, characterized in that, The first mounting part has an annular structure and further includes a positioning block and a wire passage groove. The positioning block is disposed on the outside of the third protrusion, and the wire passage groove is radially opened in the first mounting part.

8. The light source mounting structure according to claim 7, characterized in that, The first mounting part further includes a mounting post, which has a through hole; the first base plate is provided with a mounting hole and a positioning hole, the positioning block is inserted into the positioning hole, and the fastener passes through the through hole and is fixedly installed in the mounting hole.

9. The light source mounting structure according to any one of claims 1-8, characterized in that, The lens holder is an integrally injection-molded PP plastic part, and the second substrate is a thermally conductive ceramic circuit board.

10. A lighting device, characterized in that, The device includes an anti-glare ring, a lens, and a light source mounting structure as described in any one of claims 1-9. The lens bracket further includes a second mounting portion, which is disposed at the other end of the main body. The main body has a mounting cavity, and the lens is mounted in the mounting cavity and located above the light source.

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