A type of lamp and vehicle

Abstract

This application relates to the field of vehicle lighting technology, specifically to a lighting fixture and a vehicle. The lighting fixture includes a lamp housing, a light guide, and a limiting member. A receiving cavity is formed inside the lamp housing, and the light guide is at least partially disposed within the receiving cavity, having a positioning segment. The limiting member is located within the receiving cavity and is integrally formed with the lamp housing. The limiting member has a first limiting surface, a second limiting surface, and a third limiting surface. The first limiting surface surrounds the circumference of the positioning segment of the light guide, and the positioning segment is adapted to pass through the first limiting surface. Along the extension direction of the light guide, the second and third limiting surfaces are spaced apart, and the positioning segment of the light guide is disposed between the second and third limiting surfaces. At least a portion of one end of the positioning segment abuts against the second limiting surface, and the other end of the positioning segment abuts against the third limiting surface. This application utilizes the shape of the lamp housing itself to achieve three-dimensional positioning of the light guide within the lamp housing, thereby reducing positional deviation between the light guide and the light source and ensuring the performance of the light guide.

Description

Technical Field

[0001] This application relates to the field of vehicle lighting technology, specifically to a lighting fixture and a vehicle. Background Technology

[0002] In traditional vehicle lighting light guide positioning solutions, the light guide is usually mounted inside the lamp housing using a bracket. This results in a large positional deviation between the light guide and the lamp source, causing a decrease in the light guide's performance. Summary of the Invention

[0003] This application provides a lighting fixture and a vehicle, which aims to at least partially solve the problem of light guide performance degradation caused by large positional deviations between the light guide and the light source.

[0004] In a first aspect, this application provides a lamp fixture, the lamp fixture comprising: a lamp housing having an internal cavity; a light guide at least partially disposed within the cavity, the light guide having a positioning segment; and a limiting member located within the cavity and integrally formed with the lamp housing, the limiting member having a first limiting surface, a second limiting surface, and a third limiting surface; wherein the first limiting surface surrounds the circumferential surface of the positioning segment of the light guide, and the positioning segment is adapted to pass through the first limiting surface; along the extension direction of the light guide, the second limiting surface and the third limiting surface are spaced apart, the positioning segment of the light guide is disposed between the second limiting surface and the third limiting surface, at least a portion of one end of the positioning segment abuts against the second limiting surface, and the other end of the positioning segment abuts against the third limiting surface.

[0005] The lamp provided in this application has a first limiting surface surrounding the circumference of the positioning segment of the light guide, and the positioning segment fittingly passing through the first limiting surface. Therefore, the circumferential position of the positioning segment can be limited by the first limiting surface, thereby limiting the circumferential position of the light guide. Since the second limiting surface and the third limiting surface are spaced apart, and the positioning segment of the light guide is disposed between the second limiting surface and the third limiting surface, with at least a portion of one end of the positioning segment abutting against the second limiting surface and the other end of the positioning segment abutting against the third limiting surface, the displacement of the positioning segment of the light guide along the extension direction of the light guide can be limited by the second limiting surface and the third limiting surface, thereby limiting the light guide within the receiving cavity of the lamp housing.

[0006] In addition, since the limiting component and the lamp housing are integrally formed, the light guide in this application is not installed in the lamp housing with the aid of a bracket. Instead, the three-dimensional positioning of the light guide in the lamp housing is achieved by utilizing the shape of the lamp housing itself, so as to reduce the positional deviation between the light guide and the lamp source, ensure the performance of the light guide, and has good practicality.

[0007] In some implementations, the second limiting surface and the third limiting surface are located at the two axial ends of the first limiting surface.

[0008] In some embodiments, the sidewall of the lamp housing includes a bottom wall; the limiting member includes a surrounding plate that is connected to the inner side of the bottom wall and forms a limiting groove with the bottom wall, the positioning segment is adapted to pass through the limiting groove, and the inner wall of the limiting groove is configured as the first limiting surface.

[0009] In some embodiments, the limiting member further includes a limiting plate connected to one end of the enclosure facing the bottom wall, at least a portion of the end of the positioning segment abutting against the limiting plate, and the inner wall of the limiting plate being configured as the second limiting surface.

[0010] In some embodiments, multiple limiting plates are provided, and the multiple limiting plates are spaced apart circumferentially around the surrounding plate, forming a light-transmitting opening, and at least a portion of the end of the positioning segment facing the bottom wall abuts against the multiple limiting plates.

[0011] In some embodiments, the limiting plate seals one end of the enclosure facing the bottom wall, at least a portion of the limiting plate is a light-transmitting portion, and at least a portion of the end of the positioning segment facing the bottom wall abuts against the light-transmitting portion.

[0012] In some embodiments, the limiting member further includes: a plurality of buckles located at one end of the enclosure away from the bottom wall, the plurality of buckles being arranged circumferentially around the enclosure, the plurality of buckles forming a passage opening; the light guide includes a main body and a limiting part, the main body being adapted to pass through the passage opening, the limiting part being connected to the periphery of the main body, the limiting part being engaged with the side of the plurality of buckles facing the bottom wall, the side of the plurality of buckles facing the bottom wall being configured as the third limiting surface.

[0013] In some implementations, the inner diameter of the through-hole is greater than or equal to the inner diameter of the limiting groove.

[0014] In some embodiments, the enclosure has multiple mounting slots, the opening side of which is away from the bottom wall, and at least a portion of the buckle and at least a portion of the limiting portion are located within the mounting slots.

[0015] In some embodiments, the limiting member further includes: a plurality of connecting plates connected to the inner side of the bottom wall and spaced apart around the perimeter of the enclosure, wherein the connecting plates, the buckles and the assembly slots are arranged in a one-to-one correspondence, the connecting plates are disposed outside the enclosure and located outside the corresponding assembly slots, the buckles are connected to the corresponding connecting plates, and at least a portion of the buckles is located within the corresponding assembly slots.

[0016] In some embodiments, the lamp further includes: a plurality of positioning protrusions, spaced apart and connected to the inner side of the first limiting surface, and abutting against the peripheral surface of the positioning segment.

[0017] In a second aspect of this application, a vehicle is also provided, the vehicle including a vehicle body and the lamps described in the first aspect, the lamps being mounted on the vehicle body.

[0018] In vehicles equipped with the lamps described in the first aspect, the light guide is installed inside the lamp housing without the aid of a bracket. Instead, the three-dimensional positioning of the light guide within the lamp housing is achieved by utilizing the shape of the lamp housing itself, thereby reducing the positional deviation between the light guide and the lamp source, ensuring the performance of the light guide, and thus having excellent practicality. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of a lamp 10 according to one or more embodiments of this application is shown; Figure 2 It shows Figure 1 A partial schematic diagram; Figure 3 It shows Figure 2 A top-down view; Figure 4 It shows Figure 3 A schematic diagram of the AA cross-section; Figure 5 It shows Figure 3 BB cross-sectional diagram; Figure 6 It shows Figure 2 A frontal view diagram; Figure 7 Show Figure 2 A sectional axial view of the lamp housing 110 in the middle; Figure 8 It shows Figure 7 Enlarged view of point A; Figure 9 An assembly diagram of the optical guide and limiting component is shown; Figure 10 Show Figure 9 A structural diagram from another perspective.

[0021] Explanation of reference numerals in the attached figures: 10. Lighting fixtures; 110. Lamp housing; 111. Receiving cavity; 112. Bottom wall; 113. Mounting groove; 114. Assembly port; 120. Light guide; 120a. Positioning section; 121. Main body; 122. Limiting part; 130. Limiting component; 130a. First limiting surface; 130b. Second limiting surface; 130c. Third limiting surface; 131. Enclosure; 132. Limiting groove; 133. Positioning protrusion; 134. Limiting plate; 135. Light passage; 136. Buckle; 137. Through-hole; 138. Assembly groove; 139. Connecting plate; 140. Light source; 150. Circuit board. Detailed Implementation

[0022] The technical solutions in this application will be clearly and thoroughly described below with reference to the accompanying drawings. In the description of the embodiments of this application, unless otherwise stated, " / " means "or," for example, A / B can mean A or B. "And / or" in the text is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more than two.

[0023] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as implying or suggesting relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0024] With the development of LEDs (Light Emitting Diodes) in automotive lighting, the application of light guides in vehicle lighting is becoming increasingly common. A light guide is a structural component that directs the light emitted by an LED from the PCB to the front panel or the light-emitting position.

[0025] In related technologies, the positioning of the light guide in vehicle lighting solutions requires a two-stage assembly process: "light guide → bracket → lamp housing." This involves first connecting the light guide to the bracket using clips or screws, and then further positioning and installing the bracket to the lamp housing using clips or screws. This technical solution suffers from at least the following shortcomings: 1. The lengthy dimensional chain leads to the accumulation of tolerances: the tolerances of the fit between the light guide and the bracket, and between the bracket and the lamp housing, are added up at each level. In the end, the positional deviation between the light guide end and the LED light source is large, which causes the loss of light coupling efficiency and then leads to the degradation of the light guide performance. 2. Insufficient structural stability: Since the light guide is connected to the lamp housing through the bracket, when the lamp is in a vibrating environment, the light guide and the bracket, as well as the bracket and the lamp housing, may become loose, which will cause the light guide to shift. This will also lead to a large positional deviation between the light guide end and the LED light source, resulting in a loss of light coupling efficiency and consequently a decrease in the performance of the light guide. 3. Low assembly efficiency: Since the light guide is assembled into the lamp housing through the bracket, the assembly of the light guide involves two stages, which increases the number of assembly steps to a certain extent, resulting in low assembly efficiency.

[0026] Based on the aforementioned technical problems, in the first aspect of this application, this application provides a lamp that does not rely on a bracket, but instead uses a limiting component integrally formed with the lamp housing to achieve three-dimensional positioning of the light guide within the lamp housing. This shortens the dimensional chain and controls tolerance accumulation from the root, thereby reducing the positional deviation between the light guide and the lamp source, ensuring the performance of the light guide, simplifying the assembly process of the light guide, and improving the assembly efficiency of the light guide.

[0027] Figure 1 A schematic diagram of the structure of a lamp 10 according to one or more embodiments of this application is shown. Figure 2 It shows Figure 1 A partial schematic diagram. Combined with... Figure 1 as well as Figure 2 , combined Figure 1 The lamp 10 provided in this application includes a lamp housing 110 and a light guide 120. The lamp housing 110 serves as a mounting carrier for the light guide 120, and a receiving cavity 111 is formed inside the lamp housing 110. At least a portion of the light guide 120 is disposed within the receiving cavity 111. Exemplarily, an assembly opening 114 is provided on the side wall of the lamp housing 110 for assembling the light guide 120 inside the lamp housing 110. The assembly opening 114 of the lamp housing 110 can be sealed by a sealing plate or by means of internal vehicle body components; this application does not impose any limitations on this.

[0028] Figure 3 It shows Figure 2 A top-down view. Figure 4 It shows Figure 3 A schematic diagram of the AA cross section. Figure 5 It shows Figure 3 A schematic diagram of the BB cross-section. Combined with... Figures 3-5The lamp 10 provided in this application also includes a limiting member 130. A receiving cavity 111 is formed inside the lamp housing 110. The light guide 120 has a positioning segment 120a. The limiting member 130 is located within the receiving cavity 111 and is integrally formed with the lamp housing 110. The limiting member 130 has a first limiting surface 130a, a second limiting surface 130b, and a third limiting surface 130c. The first limiting surface 130a surrounds the circumference of the positioning segment 120a of the light guide 120. The positioning segment 120a is adapted to pass through the first limiting surface 130a; along the extension direction of the light guide 120, the second limiting surface 130b and the third limiting surface 130c are spaced apart, the positioning segment 120a of the light guide 120 is disposed between the second limiting surface 130b and the third limiting surface 130c, at least a portion of one end of the positioning segment 120a abuts against the second limiting surface 130b, and the other end of the positioning segment 120a abuts against the third limiting surface 130c.

[0029] The lamp 10 provided in this application, because the first limiting surface 130a of the limiting member 130 surrounds the circumferential surface of the positioning segment 120a of the light guide 120, and the positioning segment 120a is adapted to pass through the first limiting surface 130a, can limit the circumferential position of the positioning segment 120a through the first limiting surface 130a, thereby limiting the circumferential position of the light guide 120; because the second limiting surface 130b and the third limiting surface 130c are arranged at intervals, the positioning segment 120a of the light guide 120 is designed with... The positioning segment 120a is positioned between the second limiting surface 130b and the third limiting surface 130c. At least a portion of one end of the positioning segment 120a abuts against the second limiting surface 130b, and the other end of the positioning segment 120a abuts against the third limiting surface 130c. Therefore, the displacement of the positioning segment 120a of the light guide 120 along the extension direction of the light guide 120 can be restricted by the second limiting surface 130b and the third limiting surface 130c, thereby restricting the light guide 120 within the receiving cavity 111 of the lamp housing 110.

[0030] In addition, since the limiting member 130 and the lamp housing 110 are integrally formed, the installation of the light guide 120 in the lamp housing 110 in this application does not rely on a bracket. Instead, the three-dimensional positioning of the light guide 120 in the lamp housing 110 is achieved by utilizing the shape of the lamp housing 110 itself, so as to reduce the positional deviation between the light guide 120 and the lamp source 140, ensure the performance of the light guide 120, and has good practicality.

[0031] Figure 6 It shows Figure 2 A frontal view diagram. For ease of description, the luminaire 10 is defined as having a height direction, a length direction, and a width direction. The height direction is the Z-direction shown in the diagram, i.e., the vertical direction. The length direction is... Figure 8 The X direction shown is the horizontal left-right direction, and the width direction is... Figure 8 The Y direction shown is the horizontal front-to-back direction. The specific details of the lamp 10 will now be further described with reference to the accompanying drawings.

[0032] Figure 7 Show Figure 2 A sectional axial view of the lamp housing 110. Figure 8 It shows Figure 7 The enlarged diagram at point A, combined with Figure 4 , Figure 5 , Figure 7 as well as Figure 8 In some embodiments, the sidewall of the lamp housing 110 includes a bottom wall 112. The inner side of the bottom wall 112 is a receiving cavity 111, and the outer side of the inner wall may have a mounting groove 113. A lamp source 140 and a circuit board 150 for mutual use are assembled in the mounting groove 113, so that the lamp source 140 is driven to work by the circuit board 150. The lamp source 140 may be an LED, and the opening side of the mounting groove 113 may be sealed by a sealing plate, or sealed by means of internal vehicle body components. This application does not limit this. In addition, the assembly port 114 and the bottom wall 112 are arranged opposite to each other. The light guide 120 extends from the bottom wall 112 toward the assembly port 114. That is, the extension direction of the light guide 120 is the length direction of the light guide 120. The end of the light guide 120 facing the bottom wall 112 is the light input end, and the end of the light guide 120 away from the bottom wall 112 is the light output end. The light guide 120 can be directly inserted into the receiving cavity 111 from the assembly port 114 and positioned by the limiting member 130 inside the receiving cavity 111.

[0033] Figure 9 An assembly diagram of the light guide and limiting component is shown. (Combined with...) Figure 8 as well as Figure 9 The limiting member 130 includes a surrounding plate 131, which is connected to the inner side of the bottom wall 112 and forms a limiting groove 132 with the bottom wall 112. The opening side of the limiting groove 132 is away from the bottom wall 112. The positioning segment 120a of the light guide 120 is adapted to pass through the limiting groove 132, and the inner wall of the limiting groove 132 is configured as a first limiting surface 130a. The circumferential position of the positioning segment 120a of the light guide 120 is limited by the limiting groove 132, thereby limiting the circumferential position of the light guide 120.

[0034] For example, at least a portion of the inner side of the bottom wall 112 is planar, and the surrounding plate 131 is a cylindrical structure adapted to the outer diameter of the positioning segment 120a of the light guide 120. The surrounding plate 131 is integrally formed and connected to the planar portion of the inner side of the bottom wall 112, so that a channel for the light guide 120 to pass through is formed inside the surrounding plate 131. The inner diameter of the surrounding plate 131 is slightly larger than the outer diameter of the positioning segment 120a of the light guide 120, so that the positioning segment 120a of the light guide 120 can be assembled into the surrounding plate 131. In addition, the length of the surrounding plate 131 can be the same as the length of the positioning segment 120a of the light guide 120, or the length of the surrounding plate 131 can be greater than or less than the length of the positioning segment 120a of the light guide 120, as long as it is ensured that the positioning segment 120a of the light guide 120 has a portion that covers the surrounding plate 131.

[0035] It should be noted that "at least part of the inner side of the bottom wall 112 is a plane" means that the entire inner side of the bottom wall 112 is a plane, or that a portion of the inner side of the bottom wall 112 is a plane and the rest is a curved surface, etc. This application does not impose any restrictions on this.

[0036] Combination Figure 8 as well as Figure 9 In some embodiments, the lamp 10 further includes a plurality of positioning protrusions 133, which are spaced apart and connected to the inner side of the first limiting surface 130a and abut against the peripheral surface of the positioning segment 120a. When the light guide 120 is assembled inside the enclosure 131, the plurality of positioning protrusions 133 abut against the peripheral surface of the positioning segment 120a of the light guide 120. Compared to the case where the light guide 120 is in direct contact with the first limiting surface 130a, this arrangement reduces the contact area with the positioning segment 120a and, to a certain extent, prevents rotation of the positioning segment 120a, thereby reducing wear on the peripheral surface of the positioning segment 120a and demonstrating good practicality.

[0037] For example, a plurality of positioning protrusions 133 are circumferentially spaced and connected to the inner wall of the surrounding plate 131. The positioning protrusions 133 and the surrounding plate 131 are integrally formed. The positioning protrusions 133 extend along an axial direction parallel to the surrounding plate 131. The length of the positioning protrusions 133 is consistent with the length of the surrounding plate 131. The cross-sectional shape of the positioning protrusions 133 can be arc-shaped, so that each positioning protrusion 133 is in line contact with the positioning segment 120a of the light guide 120, thereby further reducing wear on the circumferential surface of the positioning segment 120a.

[0038] Combination Figure 8 as well as Figure 9In some embodiments, the limiting member 130 further includes a limiting plate 134 connected to the end of the surrounding plate 131 facing the bottom wall 112 (i.e., the limiting plate 134 is connected to the bottom end of the surrounding plate 131). At least a portion of the end of the positioning segment 120a abuts against the limiting plate 134 to restrict the movement of the positioning segment 120a toward the bottom wall 112, thereby restricting the movement of the light guide 120 toward the bottom wall 112. The inner wall of the limiting plate 134 is configured as a second limiting surface 130b.

[0039] Combination Figure 8 as well as Figure 9 In some embodiments, multiple limiting plates 134 are provided, and the multiple limiting plates 134 are circumferentially spaced around the surrounding plate 131. Each of the multiple limiting plates 134 has a distance from the central axis of the surrounding plate 131, thereby forming a light-transmitting opening 135. The edge of the positioning segment 120a facing the bottom wall 112 abuts against the multiple limiting plates 134 to restrict the movement of the positioning segment 120a towards the bottom wall 112. For example, the positioning segment 120a is the light-incident end of the light guide 120, that is, the edge of the light-incident end of the light guide 120 abuts against the multiple limiting plates 134, and the light-incident end of the light guide 120 faces the light-transmitting opening 135. When the lamp source 140 is working, the light beam emitted by the lamp source 140 is emitted through the light-transmitting opening 135 to the light-incident end of the light guide 120, and then led out through the light guide 120. In some other configurations, the positioning segment 120a is part of the middle of the light guide 120, and a step is formed between the positioning segment 120a and the portion of the light guide 120 facing the bottom wall 112. The step abuts against a plurality of limiting plates 134, and the portion of the light guide 120 facing the bottom wall 112 passes through the light passage 135 and extends toward the light source 140.

[0040] For example, two limiting plates 134 are provided, symmetrically arranged about the central axis of the surrounding plate 131, so that the end of the positioning segment 120a is subjected to balanced force. In addition, the shape of the limiting plate 134 can be semi-circular, to maximize the internal space of the light passage 135 while supporting the end of the positioning segment 120a, thus avoiding the introduction of interference beams. In another arrangement, more limiting plates 134 can be provided, such as three or four. In other embodiments, the limiting plate 134 seals the end of the enclosure 131 facing the bottom wall 112, at least a portion of the limiting plate 134 is a light-transmitting portion, and at least a portion of the end of the positioning section 120a facing the bottom wall 112 abuts against the light-transmitting portion (not shown). With this configuration, the positioning section 120a is the light-incident end of the light guide 120. The light-transmitting portion of the limiting plate 134 restricts the movement of the light guide 120 toward the bottom wall 112. When the lamp source 140 is working, the light beam emitted by the lamp source 140 is emitted through the light-transmitting portion to the light-incident end of the light guide 120 and is led out through the light guide 120.

[0041] Figure 10 Show Figure 9 A structural diagram from another perspective. Combined with... Figure 8 as well as Figure 10 In some embodiments, the limiting member 130 further includes a plurality of latches 136 located at the end of the enclosure 131 away from the bottom wall 112, that is, the plurality of latches 136 and the limiting plate 134 are arranged opposite to each other, the plurality of latches 136 are arranged around the circumference of the enclosure 131, and the plurality of latches 136 form a passage 137; the light guide 120 includes a main body 121 and a limiting part 122, the main body 121 is adapted to pass through the passage 137, the limiting part 122 is connected to the periphery of the main body 121, and the limiting part 122 is engaged with the side of the plurality of latches 136 facing the bottom wall 112, so as to restrict the movement of the limiting part 122 away from the bottom wall 112 by the plurality of latches 136, thereby restricting the movement of the light guide 120 away from the bottom wall 112, and the side of the plurality of latches 136 facing the bottom wall 112 is configured as a third limiting surface 130c. With this configuration, the positioning segment 120a of the light guide 120 can be restricted to be located between the third limiting surface 130c and the second limiting surface 130b by setting the third limiting surface 130c and the second limiting surface 130b.

[0042] Combination Figure 8 as well as Figure 10 In some embodiments, the through-hole 137 formed by the multiple latches 136 is coaxially arranged with the limiting groove 132, and the inner diameter of the through-hole 137 is larger than the inner diameter of the limiting groove 132. The body of the light guide 120 can pass through the through-hole 137 and pass into the limiting groove 132. In other embodiments, the through-hole 137 formed by the multiple latches 136 may also be consistent with the inner diameter of the limiting groove 132. The body of the light guide 120 can adaptably pass through the through-hole 137 and pass into the limiting groove 132. That is, the multiple latches 136 can also restrict the circumferential displacement of the light guide 120.

[0043] Combination Figure 8 as well as Figure 10 In some embodiments, the enclosure 131 has multiple mounting slots 138, with the opening side of the mounting slots 138 away from the bottom wall 112. At least a portion of the latch 136 and at least a portion of the limiting part 122 are located within the mounting slots 138. That is, the limiting part 122 engages with the latch 136 within the mounting slots 138. This arrangement, on the one hand, restricts the movement of the light guide 120 away from the bottom wall 112, and on the other hand, limits the circumferential rotation of the limiting part 122 around the enclosure 131 by the mounting slots 138, thereby limiting the rotation range of the light guide 120. This avoids the phenomenon of large positional deviation between the light guide 120 and the lamp source 140 caused by excessive rotation of the light guide 120, thus preventing performance degradation of the light guide 120.

[0044] For example, the limiting part 122 is a plate-shaped structure, which is integrally formed with the body of the light guide 120. The limiting part 122 is gapped in the assembly groove 138, that is, the limiting part 122 can rotate slightly in the assembly groove 138, and then the light guide 120 can also rotate slightly relative to the lamp housing 110. Since the body of the light guide 120 is usually a columnar structure, the slight rotation of the light guide 120 will not affect the transmission of the light beam in the light guide 120. In another configuration, the limiting part 122 is adapted to be disposed in the assembly groove 138, that is, the cross-sectional dimensions of the limiting part 122 are consistent with the cross-sectional dimensions of the assembly groove 138, and the limiting part 122 cannot rotate in the assembly groove 138, so that the light guide 120 is fixed relative to the lamp housing 110.

[0045] Combination Figure 8 as well as Figure 10 In some embodiments, the limiting member 130 further includes a plurality of connecting plates 139. The plurality of connecting plates 139 are integrally formed and connected to the inner side of the bottom wall 112, and are spaced apart around the circumference of the surrounding plate 131. The connecting plates 139, the buckles 136, and the mounting grooves 138 are arranged in a one-to-one correspondence. The connecting plates 139 are located outside the surrounding plate 131 and outside the corresponding mounting grooves 138. The buckles 136 are connected to the corresponding connecting plates 139, and at least a portion of the buckles 136 is located within the corresponding mounting grooves 138. That is, by setting the connecting plates 139, the buckles 136 are independent of the surrounding plate 131. With this arrangement, the body of the light guide 120 can be adapted to pass through the surrounding plate 131, and the limiting part 122 of the light guide 120 can be engaged by the buckles 136.

[0046] In specific implementation, the opening side of the assembly groove 138 is away from the bottom wall 112, and the bottom of the assembly groove 138 can extend to the bottom wall 112. Along the radial direction of the surrounding plate 131, both side walls of the assembly groove 138 are open, and the limiting part 122 of the light guide 120 can enter the assembly groove 138 through the inner side of the assembly groove 138. The end of the connecting plate 139 away from the bottom wall 112 is connected to the above-mentioned buckle 136. The buckle 136 can enter the assembly groove 138 through the outer side of the assembly groove 138, so that the limiting part 122 and the buckle 136 are engaged in the assembly groove 138.

[0047] For example, there may be two assembly slots 138, which are symmetrically arranged about the central axis of the surrounding plate 131. Correspondingly, there are also two connecting plates 139, two snap fasteners 136, and two limiting parts 122. In other configurations, there may be more assembly slots 138, connecting plates 139, snap fasteners 136, and limiting parts 122, such as three or four. This application does not limit this.

[0048] In some embodiments, the buckle 136 and the limiting plate 134 are located at the two axial ends of the enclosure 131, that is, the second limiting surface 130b and the third limiting surface 130c are located at the two axial ends of the first limiting surface 130a. Under this condition, the positioning segment 120a of the light guide 120 is wrapped by the enclosure 131 to limit the circumferential position of the light guide 120. The two ends of the positioning segment 120a of the light guide 120 are respectively limited by the buckle 136 and the limiting plate 134 to limit the position of the extension direction of the light guide 120, so as to realize the three-dimensional positioning of the light guide 120 in the lamp housing 110. At this time, the positioning segment 120a of the light guide 120 and the positioning segment 120a of the light guide 120 are the same part of the light guide 120.

[0049] In other embodiments, at least one of the latch 136 and the limiting plate 134 is located in the middle of the enclosure 131. For example, the limiting plate 134 is located at the bottom of the enclosure 131 and the latch 136 is located in the middle of the enclosure 131; or, the limiting plate 134 is located in the middle of the enclosure 131 and the latch 136 is located at the top of the enclosure 131; or, both the latch 136 and the limiting plate 134 are located in the middle of the enclosure 131.

[0050] In summary, the lamp 10 provided in this application does not rely on a bracket, but utilizes the shape of the lamp housing 110 itself to achieve three-dimensional positioning of the light guide 120 within the lamp housing 110. That is, the light guide 120 is directly connected to the lamp housing 110. This not only reduces the positional deviation between the light guide 120 and the light source, ensuring the performance of the light guide 120, but also avoids the phenomenon of light guide 120 displacement caused by bracket loosening in related technologies under vibration environments, since the light guide 120 is directly connected to the lamp housing 110. It also reduces the assembly steps of the light guide 120 within the lamp housing 110, improves the assembly efficiency of the light guide 120, and has good practicality.

[0051] In a second aspect of this application, a vehicle is also provided, the vehicle including a vehicle body and a lamp 10 of the first aspect, the lamp 10 being mounted on the vehicle body.

[0052] In the vehicle with the first aspect of the lamp 10, the light guide 120 is installed in the lamp housing 110 without the aid of a bracket. Instead, the three-dimensional positioning of the light guide 120 in the lamp housing 110 is achieved by utilizing the shape of the lamp housing 110 itself, so as to reduce the positional deviation between the light guide 120 and the lamp source, ensure the performance of the light guide 120, and has good practicality.

[0053] For example, the vehicle can be an automobile, which includes a vehicle body, and the dimming component 100 described in the second aspect is mounted on the vehicle body. The dimming component 100 described in the second aspect can be applied to the headlights of an automobile or to other types of vehicle lights, and this application does not limit this application.

[0054] Since the vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0055] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, they should not be construed as limitations on this application.

[0057] In this application, unless otherwise expressly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0058] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0059] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A lamp, characterized in that, The lighting fixture includes: The lamp housing has an internal cavity. An optical guide, at least partially disposed within the receiving cavity, has a positioning segment; A limiting member, located within the receiving cavity and integrally formed with the lamp housing, comprises a first limiting surface, a second limiting surface, and a third limiting surface; wherein, The first limiting surface surrounds the circumference of the positioning segment of the optical guide, and the positioning segment is adapted to pass through the first limiting surface; Along the extension direction of the light guide, the second limiting surface and the third limiting surface are spaced apart, the positioning segment is disposed between the second limiting surface and the third limiting surface, at least a portion of one end of the positioning segment abuts against the second limiting surface, and the other end of the positioning segment abuts against the third limiting surface.

2. The lamp according to claim 1, characterized in that, The second limiting surface and the third limiting surface are located at the two axial ends of the first limiting surface.

3. The lamp according to claim 1, characterized in that, The sidewall of the lamp housing includes a bottom wall; The limiting member includes a surrounding plate that is connected to the inner side of the bottom wall and forms a limiting groove with the bottom wall. The positioning segment is adapted to pass through the limiting groove, and the inner wall of the limiting groove is configured as the first limiting surface.

4. The lamp according to claim 3, characterized in that, The limiting member further includes a limiting plate, which is connected to one end of the enclosure facing the bottom wall. At least a portion of the end of the positioning segment abuts against the limiting plate, and the inner wall of the limiting plate is configured as the second limiting surface.

5. The lamp according to claim 4, characterized in that, Multiple limiting plates are provided, and the multiple limiting plates are arranged at intervals around the perimeter of the surrounding plate, forming a light-transmitting opening. The edge of the end of the positioning segment facing the bottom wall abuts against the multiple limiting plates.

6. The lamp according to claim 4, characterized in that, The limiting plate seals one end of the enclosure facing the bottom wall, and at least a portion of the limiting plate is a light-transmitting portion, with at least a portion of the end of the positioning section facing the bottom wall abutting against the light-transmitting portion.

7. The lamp according to any one of claims 3-6, characterized in that, The limiting component also includes: Multiple buckles are located at one end of the enclosure away from the bottom wall, and the multiple buckles are arranged circumferentially around the enclosure to form a passage opening; The light guide includes a main body and a limiting part. The main body is adapted to pass through the through-hole. The limiting part is connected to the periphery of the main body and is engaged with a plurality of buckles facing the bottom wall. The side of the plurality of buckles facing the bottom wall is configured as the third limiting surface.

8. The lamp according to claim 7, characterized in that, The inner diameter of the passage is greater than or equal to the inner diameter of the limiting groove.

9. The lamp according to claim 7, characterized in that, The enclosure panel has multiple assembly slots, the opening side of which is away from the bottom wall, and at least a portion of the buckle and at least a portion of the limiting part are located within the assembly slots.

10. The lamp according to claim 9, characterized in that, The limiting component also includes: Multiple connecting plates are connected to the inner side of the bottom wall and are spaced apart around the perimeter of the enclosure. The connecting plates, the buckles, and the assembly slots are arranged in a one-to-one correspondence. The connecting plates are located outside the enclosure and outside the corresponding assembly slots. The buckles are connected to the corresponding connecting plates, and at least a portion of the buckles is located inside the corresponding assembly slots.

11. The luminaire according to any one of claims 1-6, characterized in that, The lighting fixture also includes: Multiple positioning protrusions are spaced apart and connected to the inner side of the first limiting surface, and abut against the circumferential surface of the positioning segment.

12. A vehicle, characterized in that, The vehicle includes a vehicle body and a lamp as described in any one of claims 1-11, the lamp being mounted on the vehicle body.

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