Light guide structure, ambilight and primary instrument

Abstract

The application relates to the field of light guides, and provides a light guide structure, an atmosphere lamp and a main instrument. The light guide structure comprises a light guide section and light guide parts. The light guide section has a flat first reflection surface, and a light outlet side opposite to the first reflection surface, and the first reflection surface is provided with a first light guide tooth. The light guide parts are at least two, each light guide part is arranged at intervals and connected to the light guide section, the light guide part comprises a first light guide section and a second light guide section connected in sequence, the second light guide section is arranged in an arc line, and the end of the second light guide section away from the first light guide section is connected to the light guide section. Based on the above structure, the light guide structure can meet the demand of large-range illumination coverage, effectively improve the overall light emission uniformity, and significantly optimize the light emission effect.

Description

Technical Field

[0001] This application belongs to the field of light guide technology, and in particular relates to a light guide structure, an ambient light, and a main instrument. Background Technology

[0002] As a crucial information display component in vehicles, aircraft, and other equipment, the main instrument panel is typically surrounded by ambient lighting to enhance user experience and ease of operation. Existing ambient lighting for main instrument panels requires long light guide structures to conduct light in order to meet the need for wide-area illumination coverage. However, uneven light loss during transmission within these long light guide structures can lead to significant differences in brightness in certain areas, resulting in poor uniformity and ineffective illumination. Utility Model Content

[0003] This application provides a light guide structure, an ambient light, and a main instrument, aiming to solve the problems of poor light emission uniformity and poor light emission effect of the light guide structure.

[0004] To achieve the above objectives, the technical solution adopted in the embodiments of this application is as follows: Firstly, an optical guide structure is provided, comprising: The light guide section has a flat first reflective surface and a light-emitting side disposed opposite to the first reflective surface, wherein the first reflective surface is provided with a first light guide tooth; The light-guiding part is provided with at least two, each light-guiding part is arranged at intervals and is respectively connected to the light guide segment. The light-guiding part includes a first light-guiding segment and a second light-guiding segment connected in sequence. The second light-guiding segment extends in an arc and the end of the second light-guiding segment away from the first light-guiding segment is connected to the light guide segment.

[0005] In some embodiments, two light-guiding units are provided.

[0006] In some embodiments, the light guide segment is provided, and the two light-guiding parts are respectively connected to the two ends of the light guide segment.

[0007] In some embodiments, the light guide segment is provided, the light guide segment includes a main light segment and two extension segments, the extension segments, the main light segment and the other extension segment are sequentially connected, and the two light guiding segments are respectively connected to the connection points of the two extension segments and the main light segment.

[0008] In some embodiments, the first light guide tooth includes a convex light guide tooth disposed in the main light segment and a concave light guide tooth disposed in the extension segment.

[0009] In some embodiments, the light-guiding part includes a light-guiding plate connected between the second light-guiding segment and the extension segment, and the surface of the light-guiding plate has at least one through hole for controlling brightness.

[0010] In some embodiments, there are two light guide segments, and the two light-guiding parts are respectively connected to the two light guide segments. The light-guiding part is connected to the end of the corresponding light guide segment near the other light guide segment. The two light-guiding parts are arranged side by side and spaced apart along a first direction, and the first direction intersects the extension direction of the light guide segment.

[0011] In some embodiments, one of the light-guiding parts is a first light-guiding part, and the other light-guiding part is a second light-guiding part. The bending radius of the second light-guiding segment of the first light-guiding part is greater than the bending radius of the second light-guiding segment of the second light-guiding part. The outer peripheral surface of the second light-guiding segment of the first light-guiding part is provided with a second light-guiding tooth, and the second light-guiding tooth is disposed on the same side as the first light-guiding tooth.

[0012] In some embodiments, the outer peripheral surface of the second light-guiding segment is provided with a transition cutting surface, which is transitionally connected to the first reflective surface.

[0013] Secondly, an ambient light is provided, including a light guide cover and a light guide structure provided in the embodiments of this application. The light guide cover is provided with a groove, and the light guide segment of the light guide structure is housed in the groove, with the light-emitting side of the light guide segment facing the bottom of the groove.

[0014] Thirdly, a main instrument panel is provided, including the ambient light provided in the embodiments of this application.

[0015] The beneficial effects of the optical guide structure provided in this application are as follows: The light guide structure provided in this application embodiment can simultaneously supply light from different positions of the light guide segment through at least two spaced light-guiding sections, thereby improving the uneven loss caused by a single light source and long-distance light transmission, and reducing the occurrence of significant local differences in brightness within the light guide structure. The curved design of the second light-guiding section of the light-guiding section achieves a smooth transition with the first light-guiding section and the light guide segment, reducing reflection / refractive losses at the connection point and improving light transmission efficiency. The relatively long light guide segment can meet the needs of large-area lighting, and the first light-guiding teeth on the first reflective surface disrupt the total internal reflection condition within the light guide segment, promoting uniform light emission from the light-emitting side. Based on this, the light guide structure can effectively improve overall light emission uniformity and significantly optimize the light emission effect while meeting the needs of large-area lighting coverage. Attached Figure Description

[0016] To clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments of this application or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional schematic diagram of a light guide structure provided in some embodiments of this application, wherein a light guide segment is provided, and two light-guiding parts are respectively connected to the two ends of the light guide segment; Figure 2 for Figure 1 A front view of the provided optical guide structure; Figure 3 for Figure 1 A magnified view of area A is provided. Figure 4 for Figure 1 A cross-sectional view of the provided optical guide structure; Figure 5 for Figure 1 Simulation results of the provided optical guide structure Figure 1 ; Figure 6 for Figure 1 Simulation results of the provided optical guide structure Figure 2 Among them, with Figure 5 compared to, Figure 6 The bending radius of the second light-guiding section is smaller; Figure 7 This is a partial schematic diagram of a light guide structure provided in some other embodiments of this application, wherein the light-guiding part is connected at the junction of the extension section and the main light section; Figure 8 for Figure 7 The simulation results of the provided optical guide structure are shown in the figure. Figure 9 This is a partial schematic diagram of a light guide structure provided in some other embodiments of this application, wherein the first light guide tooth includes a convex light guide tooth disposed in the main light segment and a concave light guide tooth disposed in the extension segment; Figure 10 This is a partial schematic diagram of a light guide structure provided in other embodiments of this application, wherein a light guide plate is connected between a second light guide segment and an extension segment; Figure 11 for Figure 9 and Figure 10 The provided simulation results of the optical guide structure show that the extension section at the left end of the optical guide structure is provided with concave optical guide teeth, and a optical guide plate is provided between the second optical guide section and the extension section at the right end of the optical guide structure. Figure 12This is a partial schematic diagram of a light guide structure provided in some other embodiments of this application, wherein two light-guiding parts are respectively connected to two light guide segments, and the light-guiding parts are connected to the end of the corresponding light guide segment near the other light guide segment; Figure 13 for Figure 12 The simulation results of the provided optical guide structure are shown in the figure.

[0018] The following are the labeling elements in the figure: 10-Light guide section, 11-First reflecting surface, 12-Light emitting side, 111-First light guide tooth, 1111-Convex light guide tooth, 1112-Concave light guide tooth, 13-Main light guide section, 14-Extension section; 20-Light guiding part, 21-First light guiding section, 22-Second light guiding section, 23-Light guiding plate, 231-Through hole, 20a-First light guiding part, 20b-Second light guiding part, 221-Transition cutting surface, 222-Second light guide tooth. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clear, the application will be described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application. Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions. Unless otherwise specified, all technical features and optional technical features of this application can be combined to form new technical solutions.

[0020] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to 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.

[0023] To illustrate the technical solutions provided in this application, the following detailed description is provided in conjunction with specific drawings and embodiments.

[0024] Please see Figure 1 , Figure 2 , Figure 3 , Figure 4 Some embodiments of this application provide a light guide structure, including a light guide segment 10 and a light-guiding portion 20. The light guide segment 10 has a flat first reflective surface 11 and a light-emitting side 12 disposed opposite to the first reflective surface 11. The first reflective surface 11 is provided with first light-guiding teeth 111. At least two light-guiding portions 20 are provided, each light-guiding portion 20 being spaced apart from each other and respectively connected to the light guide segment 10. The light-guiding portion 20 includes a first light-guiding segment 21 and a second light-guiding segment 22 connected in sequence. The second light-guiding segment 22 extends in an arc, and the end of the second light-guiding segment 22 away from the first light-guiding segment 21 is connected to the light guide segment 10.

[0025] It should be noted that light can be transmitted along the extension direction of the light guide section 10 within the light guide section 10. The light guide section 10 can be extended in a straight line, a curve, or a broken line. In some embodiments, a single light guide segment 10 is provided, and the extension length of the light guide segment 10 is relatively long; in other embodiments, multiple light guide segments 10 are provided, and the total extension length of the multiple light guide segments 10 is relatively long; for example, in some embodiments, the total extension length of one or more light guide segments 10 is 650 mm to 800 mm, and for example, the extension length of the light guide segment 10 may be 650 mm, 655 mm, 660 mm, 666 mm, 670 mm, 673 mm, 680 mm, 687 mm, 690 mm, 693 mm, 700 mm, 706 mm, 710 mm, 714 mm, 720 mm, 725 mm, 730 mm, 731 mm, 731.5 mm, 735 mm, 740 mm, 747 mm, 750 mm, 756 mm, 760 mm, 768 mm, 770 mm, 779 mm, 780 mm, 783 mm, 790 mm, etc. The point value of any one of mm, 791 mm, 800 mm, etc., or the range value between any two.

[0026] The light guide segment 10 has a flat first reflective surface 11 on one side along the circumference, and the side of the light guide segment 10 opposite to the first reflective surface 11 is the light-emitting side 12. The first reflective surface 11 is provided with first light guide teeth 111, which can be convex or concave. The first light guide teeth 111 are used to break the total internal reflection condition of light in the light guide segment 10, and adjust the transmission path of light in the light guide segment 10 through reflection, thereby enabling light to be uniformly emitted from the light-emitting side 12.

[0027] Because the light guide section 10 has a relatively long extension length, if a single light source is used, the light loss at the far end will be significant, resulting in differences in brightness. Therefore, the light guide structure has at least two light-guiding parts 20 (e.g., two, three, or more than three, etc.), with each light-guiding part 20 spaced apart and connected to the light guide section 10. Multiple light-guiding parts 20 can introduce light into the light guide section 10 from external light sources, meaning multiple light-guiding parts 20 can simultaneously supply light from different positions on the light guide section 10, thereby improving the uneven light loss problem caused by a single light source and long-distance light transmission. The number of external light sources corresponds to the number of light-guiding parts 20. The external light source can be, but is not limited to, LEDs (Light-Emitting Diodes), etc., and the color of the light source is not limited; for example, it can be an RGB (Red, Green, Blue) color-changing LED.

[0028] Each light-guiding section 20 includes a first light-guiding segment 21 and a second light-guiding segment 22. One end of the first light-guiding segment 21 extends to an external light source, and the other end of the first light-guiding segment 21 is connected to the second light-guiding segment 22. The first light-guiding segment 21 can guide light from the external light source to the second light-guiding segment 22. The first light-guiding segment 21 can be arranged in a straight line, a curve, or a broken line. The second light-guiding segment 22 is arranged in an arc shape and transitions between the first light-guiding segment 21 and the light guide segment 10. The arc design of the second light-guiding segment 22 can reduce the transmission loss of light from the light-guiding section 20 to the light guide segment 10, and can enable light to be introduced into the light guide segment 10 more efficiently and stably, thereby helping to improve the overall light emission uniformity of the light guide structure.

[0029] The bending radius of the second light-guiding section 22 can be set as needed. For example... Figure 5 As shown, if the bending radius of the second light-guiding segment 22 is large (i.e., the arc is gentle), it can reduce light loss, improve light transmission efficiency, reduce local brightness attenuation or dark areas, optimize light emission uniformity, reduce processing difficulty, and improve processing convenience and structural reliability. However, it requires a larger installation space, imposes greater restrictions on the layout of other surrounding components, and has lower installation adaptability. Figure 6As shown, if the bending radius of the second light-guiding segment 22 is small (i.e., the arc is steep), it may relatively increase light loss and may cause uneven phenomena such as local bright spots or dark spots at the bending point, increasing the processing difficulty. The advantage is that it can compress space and adapt to compact layout scenarios. In some embodiments, the bending radius of the second light-guiding segment 22 can be 20mm to 40mm. For example, the bending radius of the second light-guiding segment 22 can be any value of 20 mm, 22 mm, 25 mm, 28 mm, 30 mm, 33 mm, 35 mm, 37 mm, or 40 mm, or a range between any two.

[0030] In some embodiments, the light-guiding part 20 (including a first light-guiding segment 21 and a second light-guiding segment 22 connected in sequence) and the light-guiding segment 10 connected thereto are integrally formed, forming a single structure. This arrangement allows the light-guiding part 20 and the connected light-guiding segment 10 to be integrally formed using the same conductive medium, effectively avoiding light transmission loss caused by interfaces at the connection points. This ensures smooth light transmission from the light-guiding part 20 to the light-guiding segment 10, improving light utilization. Furthermore, the integral molding process simplifies the production process of the light guide structure, reduces assembly steps, improves processing precision, and enables the light guide structure to achieve the desired light-guiding effect. It also enhances the overall structural strength of the light guide structure, reduces damage caused by component connection problems, improves reliability, extends service life, and meets the needs of industrial mass production. The light guide structure can be a transparent structural component. The light guide structure can be made of, but is not limited to, high molecular polymer materials, with features such as excellent light transmittance, easy processing, and moderate cost. For example, the light guide structure can be made of polymethyl methacrylate (PMMA, commonly known as acrylic), polycarbonate (PC), or polystyrene (PS).

[0031] In summary, the light guide structure provided in this application embodiment can simultaneously supply light from different positions of the light guide segment 10 through at least two spaced light-guiding parts 20, thereby improving the uneven loss caused by a single light source and long-distance light transmission, and reducing the occurrence of significant local differences in brightness in the light guide structure. The curved design of the second light-guiding segment 22 of the light-guiding part 20 achieves a smooth transition with the first light-guiding segment 21 and the light guide segment 10, reducing reflection / refractive losses at the connection point and improving light transmission efficiency. The relatively long light guide segment 10 can meet the needs of large-area illumination, and the first light-guiding teeth 111 of the first reflective surface 11 disrupt the total internal reflection condition within the light guide segment 10, causing light to be uniformly emitted from the light-emitting side 12. Based on this, the light guide structure can effectively improve the overall light emission uniformity and significantly optimize the light emission effect while meeting the needs of large-area illumination coverage.

[0032] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, two light-guiding parts 20 are provided.

[0033] By adopting the above solution, light can be simultaneously supplied from two different positions on the light guide section 10 via two light-guiding parts 20. This effectively improves the uneven loss problem of traditional single light source transmission over long distances, reduces local brightness differences in the light guide section 10, and significantly improves the overall light emission uniformity and light emission effect of the light guide structure. Furthermore, compared to solutions with three or more light-guiding parts 20, the solution with two light-guiding parts 20 simplifies the structural design and reduces the number of connection nodes between the light-guiding parts 20 and the light guide section 10, while ensuring that the light emission uniformity meets the standards. This reduces assembly complexity and manufacturing costs, compresses the overall space occupied by the light guide structure, and enables the light guide structure to adapt to scenarios such as main instruments where the component layout has compact requirements.

[0034] Please see Figure 1 , Figure 2 , Figure 3 In some embodiments of this application, the light guide segment 10 is provided with two light-guiding parts 20 respectively connected to the two ends (i.e. the two endpoints) of the light guide segment 10.

[0035] By adopting the above scheme, light can be simultaneously supplied from both ends of the light guide segment 10 via two light-guiding parts 20, causing the light to be bidirectionally transmitted to the middle region of the light guide segment 10. Based on this, each end of the light guide segment 10 can be mainly guided by the light-guiding part 20 located at that end, and the brightness can be supplemented by the other light-guiding part 20; the middle region of the light guide segment 10 also does not have significant attenuation due to the superposition of bidirectional light. As a result, the loss difference of long-distance transmission can be largely offset, the problem of near brightness and far darkness of traditional single light sources can be greatly improved, the brightness uniformity of the light guide segment 10 can be significantly improved, and the light emission effect can be stabilized and optimized. Furthermore, based on the design of a single light guide segment 10, multi-segment splicing is not required, which can reduce light refraction loss and brightness discontinuity at the splicing points and maintain the continuity of light transmission; it can also reduce the number of structural components and simplify the structure of the light guide.

[0036] like Figure 5 , Figure 6 As shown in the simulation results based on the specific example of this embodiment, the overall luminous effect is relatively consistent, with no very bright spots or risks of unevenness. That is, based on the settings of this embodiment, a better luminous effect can be achieved.

[0037] Please see Figure 7 , Figure 8In some embodiments of this application, a light guide segment 10 is provided, which includes a main light guide segment 13 and two extension segments 14. The extension segment 14, the main light guide segment 13, and the other extension segment 14 are connected in sequence, and two light-guiding parts 20 are respectively connected to the connection points of the two extension segments 14 and the main light guide segment 13.

[0038] It should be noted that the two light-guiding parts 20 are respectively close to the two ends of the light guide section 10, but are spaced a certain distance from the corresponding ends of the light guide section 10. The portion of the light guide section 10 located between the two light-guiding parts 20 is the main light guide section 13. The light guide section 10 also has two extension sections 14 extending outward from both ends of the main light guide section 13. Each extension section 14 is located on the side of the corresponding light-guiding part 20 away from the main light guide section 13 and the other light-guiding part 20.

[0039] By adopting the above scheme, and by connecting the two light-guiding parts 20 to the connection points of the two extension sections 14 and the main light section 13 respectively, light can be supplied bidirectionally from both ends of the main light section 13 to the central region of the main light section 13 via the two light-guiding parts 20. This allows the light to quickly cover the main light section 13, thereby making the main light section 13 the main light-emitting area. The main light section 13 does not experience significant brightness attenuation due to close-range light supply, reducing the loss difference during long-distance transmission. Furthermore, the risk of bright spots can be mainly concentrated at the coupling intersection of the light-guiding parts 20, the extension sections 14, and the main light section 13 (considering the actual position of the human eye, bright spots appearing at both ends of the light guide structure are less noticeable than those appearing in the middle of the light guide structure). The risk of dark spots can be mainly concentrated in the two extension sections 14 (such as...). Figure 8 As shown, if the extension section 14 is not provided with a special light guiding structure (such as the concave light guiding tooth 1112 mentioned below), and no other light guiding structure is provided between the second light guiding section 22 and the extension section 14 (such as the light guiding plate 23 mentioned below), the extension section 14 will basically not emit light and form a dark spot; thus, the light emission uniformity and light emission effect of the dominant light section 13 can be emphasized, and the brightness of the dominant light section 13 can be made uniform across the entire range.

[0040] Please see Figure 9 In some embodiments of this application, the first light guide tooth 111 includes a convex light guide tooth 1111 disposed on the main light guide segment 13 and a concave light guide tooth 1112 disposed on the extension segment 14.

[0041] It should be noted that the first light guide tooth 111 in this embodiment is not a uniform structure for the entire light guide segment 10. Instead, based on the functional positioning of the main light guide segment 13 and the extension segment 14, two different types of light guide teeth with different parameters are adopted respectively.

[0042] The first reflective surface 11 of the dominant light segment 13 is provided with convex light guide teeth 1111. The teeth of the convex light guide teeth 1111 protrude outward and are shallow. With this setting, the light emission angle can be precisely controlled through the convex light guide teeth 1111, thereby improving the light emission uniformity and light emission effect of the dominant light segment 13 in the core light emission area.

[0043] At least one extension segment 14 (i.e., one or two extension segments 14 may be provided) has concave light guide teeth 1112 on its first reflective surface 11. The teeth of the concave light guide teeth 1112 are recessed inward and significantly deeper than the convex light guide teeth 1111. This arrangement can enhance light reflection efficiency and improve light utilization through the concave light guide teeth 1112, thereby filling the brightness gap and compensating for the brightness of the extension segment 14. This can also cause the extension segment 14 to emit light, reducing the risk of dark spots. However, since the amount of usable light and energy entering the extension segment 14 is relatively small, and the depth adjustment range of the concave light guide teeth 1112 is limited, the extension segment 14 can have a certain brightness, but it is difficult to adjust it to a high brightness, and the adjustment space is relatively limited.

[0044] By adopting the above scheme, for the dominant light segment 13, which is the core light-emitting area, the first reflective surface 11 of the dominant light segment 13 can be equipped with convex light guide teeth 1111 with outward protrusion of the tooth shape and shallow depth to precisely control the light emission angle, thereby improving the light emission uniformity of the dominant light segment 13 and stabilizing and optimizing the light emission effect of the dominant light segment 13. For the extension segment 14, which is prone to dark spots, the first reflective surface 11 of the extension segment 14 can be equipped with concave light guide teeth 1112 with inward concavity of the tooth shape and significantly deeper than the convex light guide teeth 1111, to enhance the light reflection efficiency and improve the light utilization rate, thereby maximizing the light emission potential of the extension segment 14, effectively supplementing the brightness gap of the extension segment 14, thereby compensating for the brightness of the extension segment 14, reducing the risk of dark spots on the extension segment 14, enabling the extension segment 14 to have a certain light emission capability, and improving the overall light emission integrity and light emission effect of the light guide segment 10.

[0045] Please see Figure 10 In some embodiments of this application, the light-guiding part 20 includes a light-guiding plate 23, which is connected between the second light-guiding section 22 and the extension section 14. The surface of the light-guiding plate 23 has at least one through hole 231 for controlling the brightness.

[0046] It should be noted that a light guide plate 23 is provided between at least one extension segment 14 (i.e., one extension segment 14 or two extension segments 14) and the second light-guiding segment 22. The light guide plate 23 is a plate-like or sheet-like structure connecting the second light-guiding segment 22 and the extension segment 14. The shape of the light guide plate 23 can be, but is not limited to, a triangular shape. The light guide plate 23 can establish a direct energy channel between the second light-guiding segment 22 and the extension segment 14, actively guiding light and sufficient energy from the second light-guiding segment 22 to the extension segment 14, compensating for the brightness of the extension segment 14, and enabling the extension segment 14 to have a certain light-emitting capability.

[0047] Since the energy diverted by the light guide plate 23 is sufficient, the extension section 14 may become too bright, resulting in localized bright spots. Therefore, at least one through-hole 231 can be provided through the surface of the light guide plate 23 to reduce the propagation of light and thus control the brightness of the extension section 14. Compared to the previous embodiment, the brightness of the extension section 14 in this embodiment has a larger adjustable range. The size, shape, number, and arrangement density of the through-hole 231 can be adjusted according to brightness requirements. For example, the through-hole 231 can be, but is not limited to, circular holes, polygonal holes (e.g., rectangular holes), etc.

[0048] By adopting the above solution, for the extension section 14 which is prone to dark spots, a direct energy channel between the second light-guiding section 22 and the extension section 14 can be built through the light-guiding plate 23. This breaks through the supplementary lighting mode of "relying solely on the dominant light-guiding section 13 to conduct the remaining light to the extension section 14", and actively guides sufficient light and energy from the second light-guiding section 22 to the extension section 14. This can effectively supplement the brightness gap of the extension section 14, compensate for the brightness of the extension section 14, enable the extension section 14 to have stable light-emitting ability, significantly reduce the risk of dark spots, and improve the overall light-emitting integrity and light-emitting effect of the light-guiding section 10. Furthermore, to address the issue of excessive brightness in the extension section 14 due to sufficient energy diverted by the light guide plate 23, through holes 231 can be installed through the surface of the light guide plate 23. These through holes 231 weaken the light propagation intensity, precisely controlling the brightness of the extension section 14 and largely avoiding localized bright spots. The size, shape, number, and density of the through holes 231 can be flexibly adjusted according to actual brightness requirements, significantly increasing the adjustable brightness range of the extension section 14 compared to solutions relying solely on the concave light guide teeth 1112 for supplementary lighting. This approach maintains the uniformity and effectiveness of the main light segment 13 while optimizing the light emission state of the extension section 14 as needed, achieving precise control and high-quality presentation of the overall light-emitting effect of the light guide structure.

[0049] It should be noted that this embodiment (i.e., the embodiment related to the light guide plate 23) and the previous embodiment (i.e., the embodiment related to the concave light guide tooth 1112) can be combined. That is, the concave light guide tooth 1112 can be provided on the extension section 14 at one end, and the light guide plate 23 can be provided between the extension section 14 at the other end and the second light guide section 22. Figure 9 , Figure 10 , Figure 11 As shown, taking the case where "the extension section 14 at the left end of the light guide structure is provided with a concave light guide tooth 1112, and the second light guide section 22 at the right end of the light guide structure is provided with a light guide plate 23" as an example, according to the simulation results of this case, both the concave light guide tooth 1112 and the light guide plate 23 can compensate for the brightness of the extension section 14, but they cannot solve the problem of "bright spots appearing at the coupling intersection of the light guide section 20, the extension section 14 and the main light guide section 13".

[0050] This embodiment (i.e., the embodiment related to the light guide plate 23) and the previous embodiment (i.e., the embodiment related to the concave light guide teeth 1112) can be optionally configured. That is, concave light guide teeth 1112 can be provided at both ends of the extension section 14 (without providing the light guide plate 23), or the light guide plate 23 can be provided between both ends of the extension section 14 and the second light guide section 22 (without providing the concave light guide teeth 1112). With such configuration, the brightness of the two extension sections 14 can be compensated through the same implementation method, so that the brightness of the two extension sections 14 can be more balanced, thereby optimizing the overall light emission effect of the light guide structure; and it can also make the overall structure of the light guide structure more regular and uniform, thereby improving the processing convenience, processing accuracy and processing efficiency of the light guide structure.

[0051] Please see Figure 12 In some embodiments of this application, there are two light guide segments 10, and two light-guiding parts 20 are respectively connected to the two light guide segments 10. The light-guiding parts 20 are connected to the end of the corresponding light guide segment 10 near the other light guide segment 10. The two light-guiding parts 20 are arranged side by side and spaced apart along a first direction, and the first direction intersects the extension direction of the light guide segment 10.

[0052] It should be noted that there are two light guide segments 10, which are independent structures. Each light guide segment 10 has a first reflective surface 11 (including a first light guide tooth 111) and a light emitting side 12, which can independently realize the reception, conduction and uniform emission of light. The light emitting sides 12 of the two light guide segments 10 face the same side. Each light guide segment 10 has an end close to the other light guide segment 10 (hereinafter referred to as the "proximal end") and an end far from the other light guide segment 10 (hereinafter referred to as the "far end"). There is a certain gap between the proximal ends of the two light guide segments 10, and they are not directly connected.

[0053] Two light-guiding parts 20 are respectively connected to two light-guiding segments 10, and are both connected to the proximal end (close to the end of the other light-guiding segment 10), rather than the distal end. The two light-guiding parts 20 are arranged side by side along the first direction and spaced apart from each other, that is, the two light-guiding parts 20 are staggered and separated along the first direction (as shown in the figure, the two light-guiding parts 20 are staggered front and back). Based on this, each light-guiding part 20 is only responsible for supplying light to the light-guiding segment 10 to which it is connected.

[0054] By adopting the above scheme, each light-guiding part 20 can be responsible only for supplying light to its respective connected light guide segment 10, allowing each light guide segment 10 to independently receive and conduct light, and enabling the two light guide segments 10 to achieve uniform light emission from their respective light-emitting sides 12. Furthermore, since the length of each light guide segment 10 can be shortened while maintaining the total length of the two light guide segments 10, the transmission distance of light within a single light guide segment 10 can be significantly reduced. This reduces light propagation loss within a single light guide segment 10, improves the uneven loss problem caused by long-distance light transmission, and reduces multiple brightness differences caused by excessively long single-segment light guides. Therefore, the uniformity and effect of light emission of each light guide segment 10 can be significantly improved, with enhanced controllability. Furthermore, since the light-guiding part 20 is connected to the near end of the light guide segment 10 and the two light-guiding parts 20 are staggered along the first direction, it can avoid mutual interference between the two light-guiding parts 20 in space, thus reducing the overall space occupied; it can also allow the light source to supply light from the gap position near the two light guide segments 10, which can promote the light to cover the near end to the far end of the light guide segment 10 more evenly, and can fill the dark area at the gap position between the two light guide segments 10 to a certain extent (based on the setting of this embodiment only, a dark area may be formed at the gap position between the two light guide segments 10, but since there is no coupling intersection, no bright point will be formed, and the overall light emission effect is still good). Thus, the overall light emission uniformity and light emission effect of the light guide structure can be optimized.

[0055] Furthermore, the light guide segments 10 and light guiding parts 20 of the two sets can be integrally formed, eliminating the need for integrally formed long-sized light guide structures, thereby reducing processing and manufacturing difficulties and improving processing accuracy and yield.

[0056] Please see Figure 12 , Figure 13 In some embodiments of this application, one light-guiding part 20 is a first light-guiding part 20a, and the other light-guiding part 20 is a second light-guiding part 20b. The bending radius of the second light-guiding segment 22 of the first light-guiding part 20a is greater than the bending radius of the second light-guiding segment 22 of the second light-guiding part 20b. The outer peripheral surface of the second light-guiding segment 22 of the first light-guiding part 20a is provided with a second light-guiding tooth 222. The second light-guiding tooth 222 is disposed on the same side as the first light-guiding tooth 111.

[0057] It should be noted that the bending radius of the second light-guiding segment 22 of the first light-guiding part 20a is larger than that of the second light-guiding segment 22 of the second light-guiding part 20b. A larger bending radius results in a smoother arc, while a smaller bending radius leads to a more pronounced curvature. This arrangement is suitable for layouts where the two light-guiding parts 20 are staggered along the first direction, achieving "non-overlapping and non-collision" of the two light-guiding parts 20 within a limited space. Furthermore, it compresses the overall space occupied by the light guide structure, making it suitable for compact layout scenarios.

[0058] Based on this, since the bending radius and the arc of the second light-guiding segment 22 of the first light-guiding part 20a are relatively large, it is convenient to process the second light-guiding tooth 222 on the outer peripheral surface of the second light-guiding segment 22 of the first light-guiding part 20a. Based on this, it is convenient to enhance the light reflection efficiency of the second light-guiding segment 22 of the first light-guiding part 20a through the second light-guiding tooth 222 arranged on the same side as the first light-guiding tooth 111, improve the light utilization rate, and compensate for the brightness of the second light-guiding segment 22 of the first light-guiding part 20a itself, so that the second light-guiding segment 22 of the first light-guiding part 20a can emit light on the same side as the light-guiding segment 10 (that is, the overall light emission direction of the light guide structure is unified), thereby compensating for the brightness of the gap position between the two light-guiding segments 10 and improving the dark area problem of the gap position between the two light-guiding segments 10. Furthermore, since the bending radius of the second light-guiding segment 22 of the first light-guiding part 20a is large and the arc is relatively gentle, the concavity, depth, number, and arrangement density of the second light-guiding teeth 222 can be easily adjusted. Therefore, the light-emitting effect of the second light-guiding segment 22 of the first light-guiding part 20a is more controllable.

[0059] In some embodiments, it is not recommended to process light guide teeth on the outer peripheral surface of the second light-guiding segment 22 of the second light-guiding part 20b. This is because the bending radius and curvature of the second light-guiding segment 22 of the second light-guiding part 20b are small, making it difficult to process light guide teeth on its outer peripheral surface. Furthermore, providing light guide teeth on both the first light-guiding part 20a and the second light-guiding part 20b, causing both light-guiding parts 20 to emit light, may result in excessively bright spots. Of course, in other embodiments, light guide teeth may also be processed on the outer peripheral surface of the second light-guiding segment 22 of the second light-guiding part 20b as needed.

[0060] By adopting the above solution, the larger bending radius of the first light-guiding part 20a and the smaller bending radius of the second light-guiding part 20b can be used to adapt the staggered layout of the two along the first direction, avoiding structural overlap and collision in a limited space. This can effectively compress the overall volume occupied by the light guide structure, optimize the spatial adaptability of the light guide structure, and meet the needs of compact layout scenarios such as main instruments.

[0061] By adopting the above scheme, the gentle curve of the second light-guiding segment 22 of the first light-guiding part 20a facilitates the processing of the second light-guiding tooth 222. By using the second light-guiding tooth 222, which is positioned on the same side as the first light-guiding tooth 111, light reflection efficiency is enhanced and utilization is improved. This not only compensates for the brightness of the second light-guiding segment 22 of the first light-guiding part 20a and makes it emit light on the same side as the light-guiding segment 10, but also precisely compensates for the brightness of the gap between the two light-guiding segments 10, reducing dark areas. Furthermore, the brightness can be controlled by the easily adjustable parameters of the second light-guiding tooth 222, reducing the problem of excessively bright spots. Therefore, the light emission uniformity and light emission effect of the light guide structure can be optimized to a large extent.

[0062] like Figure 13 As shown, based on the simulation results of the specific example in this embodiment, there are no particularly bright spots overall. Except for some unevenness in brightness in the middle (the light guide mask described below can even out some of the unevenness in the middle, resulting in a better final effect), the overall light emission uniformity and light emission effect are quite good.

[0063] Of course, in other embodiments (including the embodiments other than this one mentioned above), if the light-guiding part 20 is mainly used for guiding light and does not need to be lit, then the light-guiding part 20 (including the first light-guiding segment 21 and the second light-guiding segment 22) does not need to be provided with light guide teeth.

[0064] Please see Figure 1 , Figure 3 In some embodiments of this application, the outer peripheral surface of the second light-guiding segment 22 is provided with a transition cutting surface 221, which is transitionally connected to the first reflecting surface 11. That is, the transition cutting surface 221 transitions from the cylindrical surface of the second light-guiding segment 22 to the first reflecting surface 11.

[0065] By adopting the above scheme, by setting a transition cutting surface 221 on the outer peripheral surface of the second light-guiding section 22, and by making the transition cutting surface 221 transition from the cylindrical surface of the second light-guiding section 22 to the flat first reflective surface 11, on the one hand, the structural sharp edges at the connection position between the second light-guiding section 22 and the first reflective surface 11 can be eliminated through the transition cutting surface 221, reducing the risk of local light loss or light spots caused by abrupt changes in the reflection path at the sharp edges, thereby optimizing the smoothness of light transmission from the light-guiding part 20 to the light-guiding section 10 and reducing light energy waste; on the other hand, the smooth transition connection method of the transition cutting surface 221 allows the second light-guiding section 22 and the first reflective surface 11 to form a more coherent optical interface, thereby allowing the light entering the light-guiding section 10 to cover the first reflective surface 11 more evenly, thereby stabilizing and optimizing the light emission uniformity and light emission effect of the light-guiding section 10.

[0066] Please see Figure 1 , Figure 3 , Figure 4 In some embodiments of this application, the maximum radial dimension of the light guide segment 10 is D, which is 3mm to 5mm. For example, D can be any one of 3mm, 3.2mm, 3.5mm, 3.8mm, 4mm, 4.3mm, 4.6mm, 4.7mm, 5mm, or a range between any two. Here, "radial" refers to any direction of the light guide segment 10 that passes through the central axis and is perpendicular to the central axis.

[0067] By adopting the above solution, the light guide segment 10 can have a moderate radial dimension, which can reduce the risk of shrinkage and excessively long forming process due to excessively large or small radial dimensions of the light guide segment 10. This can improve the processing convenience, processing accuracy, processing efficiency and processing yield of the light guide structure.

[0068] Please see Figure 1 , Figure 3 Some embodiments of this application provide an ambient light, including a light guide cover and a light guide structure provided in the embodiments of this application. The light guide cover has a groove, and the light guide segment 10 of the light guide structure is accommodated in the groove, with the light-emitting side 12 of the light guide segment 10 facing the bottom of the groove.

[0069] It should be noted that the light guide cover may be, but is not limited to, a milky white material, and may be made of, but is not limited to, polycarbonate (PC) material. The light guide cover has a groove, and the light guide segment 10 of the light guide structure is housed in the groove. The light emitting side 12 of the light guide segment 10 faces the bottom of the groove. The light guide cover can uniformly diffuse the light emitted from the light emitting side 12 of the light guide segment 10, and can uniformize the light emission effect of the light guide segment 10 to a certain extent, reducing bright spots or streaks that appear when light is directly emitted.

[0070] By adopting the above solution, the ambient light can stably output uniform light through the light guide structure provided in this application embodiment. By confining the light guide segment 10 within the groove of the light guide cover, the groove can provide fixed protection for the light guide segment 10, reducing the risk of displacement and damage to the light guide structure during vibration. It also allows the light emitted from the light-emitting side 12 of the light guide segment 10 to act directionally on the light guide cover. Furthermore, the light guide cover can uniformly diffuse the light emitted from the light-emitting side 12 of the light guide segment 10, achieving a certain degree of uniformity in the luminous effect of the light guide segment 10 and reducing bright spots and light streaks. Based on this, the overall luminous light of the ambient light can be made softer, more natural, and more uniform, improving the overall luminous effect and texture of the ambient light. While meeting the needs of large-area lighting, it also takes into account luminous uniformity, structural reliability, and visual aesthetics, significantly optimizing performance and user experience.

[0071] In some embodiments, if the light-guiding part 20 is mainly used for guiding light and does not need to be lit, the light guide cover may only cover the light-guiding segment 10 of the light guide structure, without covering the light-guiding part 20 of the light guide structure (i.e., the length of the light guide cover is less than the length of the light guide structure), so as to optimize the overall lighting effect and overall texture of the ambient light. Of course, in other embodiments, if the light-guiding part 20 also needs to be lit, the light guide cover may cover part or all of the light-guiding part 20 of the light guide structure as needed.

[0072] In some embodiments, a protruding strip is provided on the outer side of the light guide mask facing away from the groove opening. The protruding strip can play a fixing role and prevent the light guide mask and light guide structure from shifting. In some embodiments, the width of the protruding strip can be 1.5mm to 2mm in the direction perpendicular to the extension direction of the protruding strip, so that the protruding strip has a certain structural strength and rigidity, and compresses the space occupied by the protruding strip.

[0073] Please see Figure 1 , Figure 3 Some embodiments of this application provide a main instrument, including an ambient light provided in embodiments of this application.

[0074] By adopting the above solution, the main instrument panel can enhance the visual quality around the main instrument panel and the environmental comfort of the user during operation by using the ambient light provided in the embodiments of this application, thereby optimizing the overall user experience and product quality.

[0075] The above are merely optional embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. An optical guide structure, characterized in that, include: The light guide section has a flat first reflective surface and a light-emitting side disposed opposite to the first reflective surface, wherein the first reflective surface is provided with a first light guide tooth; The light-guiding part is provided with at least two, each light-guiding part is arranged at intervals and is respectively connected to the light guide segment. The light-guiding part includes a first light-guiding segment and a second light-guiding segment connected in sequence. The second light-guiding segment extends in an arc and the end of the second light-guiding segment away from the first light-guiding segment is connected to the light guide segment.

2. The optical guide structure as described in claim 1, characterized in that, The light-guiding unit is provided in two parts.

3. The optical guide structure as described in claim 2, characterized in that, The light guide segment is provided, and the two light-guiding parts are respectively connected to the two ends of the light guide segment.

4. The optical guide structure as described in claim 2, characterized in that, The light guide segment is provided, and the light guide segment includes a main light segment and two extension segments. The extension segments, the main light segment, and the other extension segment are connected in sequence. The two light guiding segments are respectively connected to the connection points of the two extension segments and the main light segment.

5. The optical guide structure as described in claim 4, characterized in that, The first light guide tooth includes a convex light guide tooth disposed in the main light segment and a concave light guide tooth disposed in the extension segment; And / or, the light-guiding part includes a light-guiding plate connected between the second light-guiding segment and the extension segment, and the surface of the light-guiding plate has at least one through hole for controlling the brightness.

6. The optical guide structure as described in claim 2, characterized in that, The light guide segment is provided in two parts, and the two light-guiding parts are respectively connected to the two light guide segments. The light-guiding parts are connected to the end of the corresponding light guide segment near the other light guide segment. The two light-guiding parts are arranged side by side and spaced apart along a first direction, which intersects the extension direction of the light guide segment.

7. The optical guide structure as described in claim 6, characterized in that, One of the light-guiding parts is a first light-guiding part, and the other light-guiding part is a second light-guiding part. The bending radius of the second light-guiding segment of the first light-guiding part is greater than the bending radius of the second light-guiding segment of the second light-guiding part. The outer peripheral surface of the second light-guiding segment of the first light-guiding part is provided with a second light-guiding tooth, and the second light-guiding tooth is arranged on the same side as the first light-guiding tooth.

8. The optical guide structure as described in any one of claims 1-7, characterized in that, The outer peripheral surface of the second light-guiding segment is provided with a transition cutting surface, which is transitionally connected to the first reflective surface.

9. An ambient light, characterized in that, The light guide includes a light guide cover and a light guide structure as described in any one of claims 1-8, wherein the light guide cover has a groove, the light guide segment of the light guide structure is housed in the groove, and the light-emitting side of the light guide segment faces the bottom of the groove.

10. A main instrument, characterized in that, Including the ambient light as described in claim 9.

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