Lighting device, method, vehicle and computer readable storage medium for a vehicle interior

Abstract

The embodiment of the application provides a kind of lighting device, method, vehicle and computer readable storage medium in vehicle interior, the device includes: light source module, set in the preset position of handrail component in vehicle, for output light;Asymmetric curved surface lamp bowl, cover on light source module, the inner wall of asymmetric curved surface lamp bowl is asymmetric curved surface structure, for forming first light beam by light reflection;Shading grid structure, set in the light exit area of asymmetric curved surface lamp bowl, shading grid structure is used to shield scattered light beam in first light beam, so that second light beam in first light beam is output to first area along preset path, wherein, second light beam is the remaining light beam except scattered light beam in first light beam;Reflection structure, set in first area, for diffusely reflecting second light beam to the preset area of vehicle.The application solves the technical problem that the illumination effect in the related art vehicle interior is poor.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more specifically, to a vehicle interior lighting device, method, vehicle, and computer-readable storage medium. Background Technology

[0002] In the field of vehicle technology, interior lighting systems are often integrated with components such as armrests and headliners to improve the usability for passengers at night, especially when reading, operating mobile devices, or searching for items. Localized lighting has become a user-friendly feature. Users increasingly demand lighting in areas near armrests in dimly lit environments, requiring light sources that can cover functional areas without causing visual interference. Currently, the lighting devices commonly used in the industry suffer from significant glare problems and lack effective control over the light source, severely impacting the user experience and resulting in poor interior lighting performance in vehicles.

[0003] There is currently no good solution to the above problems. Summary of the Invention

[0004] This application provides a lighting device, method, vehicle, and computer-readable storage medium for the interior of a vehicle, to at least solve the technical problem of poor lighting effect inside vehicles in related technologies.

[0005] According to one aspect of the embodiments of this application, a lighting device for the interior of a vehicle is provided, comprising: a light source module disposed at a preset position of an armrest component in the vehicle for outputting light; an asymmetrical curved lamp holder covering the light source module, the inner wall of the asymmetrical curved lamp holder having an asymmetrical curved structure for reflecting light to form a first beam; a light-shielding grille structure disposed in the light-emitting area of ​​the asymmetrical curved lamp holder, the light-shielding grille structure for blocking the scattered beam in the first beam, so that a second beam in the first beam is output to a first area along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam; and a reflection structure disposed in the first area for diffusely reflecting the second beam to a preset area of ​​the vehicle.

[0006] Furthermore, the light-shielding grid structure includes multiple light-absorbing structures arranged at preset distance intervals to absorb scattered light beams, so that the second beam in the first beam is output to the first region along a preset path.

[0007] Furthermore, the asymmetric curved surface structure has a gradient curvature distribution on the first axis in the preset spatial coordinate system, so that the light beam is reflected to form a first beam with a preset angle to the second axis; wherein, the preset spatial coordinate system is constructed with the origin, the first axis, the second axis and the third axis. The preset spatial coordinate system takes the light emission center of the light source module as the origin, the direction of the vehicle's front as the first axis, the direction parallel to the vehicle's chassis and perpendicular to the first axis as the third axis, and the plane perpendicular to the first axis and the third axis as the second axis.

[0008] Furthermore, the device also includes: a light detection device for detecting the ambient light intensity inside the vehicle; and a control device connected to the light detection device and the light source module for activating the light source module when the ambient light intensity is detected to be less than a preset light intensity.

[0009] Furthermore, the device also includes: an object detection device for detecting whether a target object exists inside the vehicle; and a control device connected to the object detection device and the light source module for activating the light source module when a target object is detected inside the vehicle.

[0010] Furthermore, the device also includes: a light intensity adjustment device connected to the light detection device, used to generate light intensity timing control parameters based on the ambient light intensity, wherein the light intensity timing control parameters are used to represent control parameters that change over time; and a control device connected to the light intensity adjustment device, used to adjust the light intensity of the light output by the light source module according to the light intensity timing control parameters after the light source module is started.

[0011] Furthermore, the device also includes a heat dissipation substrate, which is attached to the bottom surface of the light source module to conduct the heat generated by the light source module during operation to the metal structure of the handrail component.

[0012] According to another aspect of the embodiments of this application, a vehicle interior lighting method is also provided, applied to the above-mentioned device. The method includes: controlling a light source module to output light, wherein the light source module is disposed at a preset position on an armrest component; using an asymmetrical curved lamp holder to reflect light to form a first beam, wherein the interior of the asymmetrical curved lamp holder has an asymmetrical curved surface structure; using a light-shielding grille structure to block the scattered beam in the first beam, so that a second beam in the first beam is output to a first area along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam; and using a reflection structure to diffusely reflect the second beam to a preset area of ​​the vehicle.

[0013] According to another aspect of the embodiments of this application, a vehicle is also provided, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of this application when it runs.

[0014] The aforementioned memory can refer to devices inside a computer used to store data and programs, including RAM, hard disks, etc. RAM can be used to temporarily store running programs and data, while hard disks can be used to store programs and data long-term. Memory enables the computer to read and write data and execute programs. The aforementioned processor is responsible for executing instructions in computer programs and performing data processing. It can also be responsible for controlling and executing various operations, including arithmetic operations, logical operations, and data transmission.

[0015] According to another aspect of the embodiments of this application, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of this application.

[0016] The aforementioned computer storage media can refer to the media used in computer memory to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser discs, etc. Computer-readable storage media include stored programs, which can be a set of instructions that a computer can recognize and execute, running on an electronic computer to meet certain information needs.

[0017] According to another aspect of the embodiments of this application, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of this application.

[0018] The aforementioned computer program products can refer to software programs that have been written, tested, and released, and can run on computers or other devices. Computer program products can include application programs, operating systems, utility software, etc., used to achieve specific functions or solve specific problems.

[0019] According to another aspect of the embodiments of this application, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods in various embodiments of this application.

[0020] The aforementioned non-volatile computer-readable storage medium can refer to a medium for storing data. Non-volatile computer-readable storage media can retain data without loss when power is off and can be used to store long-term data, such as operating systems, applications, and user files. Non-volatile storage media can include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0021] According to another aspect of the embodiments of this application, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of this application.

[0022] The aforementioned computer program can refer to a set of instructions used to tell the computer to perform specific tasks or operations. Computer programs can be written by programmers using specific programming languages ​​and can include algorithms, data structures, logic, and control flow. Computer programs can be used for a variety of purposes, including application software, operating systems, etc.

[0023] In this embodiment, a light source module is disposed at a preset position on the armrest component of the vehicle and is used to output light; an asymmetrical curved lamp holder is covered on the light source module, and the inner wall of the asymmetrical curved lamp holder is an asymmetrical curved structure, used to reflect light to form a first beam; a light-shielding grille structure is disposed in the light-emitting area of ​​the asymmetrical curved lamp holder, and the light-shielding grille structure is used to block the scattered beam in the first beam so that the second beam in the first beam is output to the first area along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam; a reflection structure is disposed in the first area and is used to diffusely reflect the second beam to the preset area of ​​the vehicle. This application embodiment employs a collaborative optical control method involving a light source module, an asymmetric curved lamp holder, a light-shielding grille, and a reflective structure. The asymmetric curved lamp holder directionally reflects the light source to form an initial beam, the light-shielding grille structure filters out scattered light deviating from the main light path, and the reflective structure in the first region diffusely reflects the remaining beam to a preset area of ​​the vehicle. This achieves the goal of accurately controlling the beam propagation path, thereby realizing the technical effect of light only covering the preset area and avoiding the head-sensitive area, thus solving the technical problem of poor lighting effect inside the vehicle in related technologies. Attached Figure Description

[0024] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0025] Figure 1 This is a schematic diagram of a vehicle interior lighting device according to an embodiment of this application;

[0026] Figure 2 This is a flowchart of a vehicle interior lighting method according to an embodiment of this application;

[0027] Figure 3 This is a schematic diagram showing the location of a vehicle interior lighting device according to an embodiment of this application;

[0028] Figure 4 This is a schematic diagram of a light-shielding grille structure according to an embodiment of this application;

[0029] Figure 5This is a schematic diagram of an optional vehicle interior lighting device according to an embodiment of this application;

[0030] Figure 6 This is a schematic diagram of a vehicle interior lighting device according to an embodiment of this application. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present application.

[0032] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0033] According to an embodiment of this application, an embodiment of a lighting device for the interior of a vehicle is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0034] This embodiment provides a lighting device for the interior of a vehicle. Figure 1 This is a schematic diagram of a vehicle interior lighting device according to an embodiment of this application, such as... Figure 1 As shown, the device includes:

[0035] A light source module 102 is disposed at a preset position in the armrest component 112 of the vehicle 110 and is used to output light. An asymmetrical curved lamp holder 104 covers the light source module. The inner wall of the asymmetrical curved lamp holder has an asymmetrical curved structure and is used to reflect light to form a first beam. A light-shielding grille structure 106 is disposed in the light-emitting area of ​​the asymmetrical curved lamp holder. The light-shielding grille structure is used to block the scattered beam in the first beam so that the second beam in the first beam is output to the first area along a preset path. The second beam is the remaining beam in the first beam excluding the scattered beam. A reflection structure 108 is disposed in the first area and is used to diffusely reflect the second beam to the preset area of ​​the vehicle.

[0036] The aforementioned light source module is a light-emitting unit integrated inside or near the vehicle's armrest component. It consists of a light-emitting diode (LED) chip, a driving circuit, and an optical packaging structure, used to stably output a controllable light beam. The design focus of the light source module is on physical integration with the armrest structure and coordination with thermal management to ensure efficient and low-glare light output within a limited space.

[0037] The aforementioned vehicle refers to a vehicle with motorized transportation functions, containing a seating area and matching interior structure. The vehicle includes components such as a roof, door panels, and armrests. In this application's embodiments, the vehicle specifically refers to a passenger car equipped with an integrated armrest lighting system. The vehicle's spatial layout and the human seating posture provide the basic constraints for the lighting function design, serving as the carrier platform for this application's embodiments.

[0038] The aforementioned armrest component is a structural member installed inside the vehicle for users to lean on, typically located on the inside of the door or the side of the seat, serving both a support function and a human-machine interface attribute. The surface morphology and internal space of the armrest component are improved to accommodate a light source module, while also participating in light path guidance as a physical shielding structure, making it a key carrier for realizing the embodiments of this application.

[0039] The aforementioned preset location refers to a specific spatial area on the handrail component, pre-determined based on ergonomic analysis and optical simulation results, for installing the light source module. The preset location is not directly facing the user's eye area, but rather selected within a structural corner or recess that effectively reflects or guides light to the functional lighting area, ensuring that the light projection path avoids visually sensitive areas.

[0040] In one optional embodiment, the light source module is embedded in a concealed groove on the lower inner side of the armrest component. The light emission direction of the light source module is designed to face the interior trim panel of the vehicle side wall, so that the light is first projected onto the interior surface with high diffuse reflectivity, and after secondary diffuse reflection, it softly and evenly covers the area around the armrest. The structural contour of the armrest component itself naturally extends in this process, forming a physical light-shielding barrier, effectively blocking the direct light path between the light source and the user's line of sight, and avoiding the glare and visual fatigue problems caused by direct lighting.

[0041] For example, the light source module uses an LED chip embedded in a concealed injection-molded groove 15mm deep and 8mm wide on the inner side of the rear user armrest. The light emission direction is tilted at a 15°–20° angle to the vertical direction, aiming at the high-diffuse-reflection trim panel on the vehicle side wall. After secondary diffuse reflection by the trim panel, the light forms a uniform illumination spot in the door storage compartment area within a 300mm range directly below the armrest, with the minimum to maximum illuminance uniformity reaching 0.75. A 45mm wide, 22° downward-sloping awning extends above the light source from the armrest component, blocking the light path directly from the light source to the user's eyes, effectively eliminating visual discomfort. In another optional embodiment, the light source module is installed in a lateral extension structure of the armrest component near the door, with the light emission direction parallel to the ground and deflected towards the door storage area. The upper contour of the armrest component acts as a awning, limiting the upward diffusion of light and concentrating the beam onto the target functional area, avoiding interference with the user's head.

[0042] This application embodiment achieves directional guidance and shielding of light by rationally arranging the spatial relationship between the light source module and the handrail components, effectively eliminating glare, improving lighting uniformity and visual comfort, and enhancing the user experience.

[0043] The aforementioned asymmetrical curved lamp holder is an optical reflective component for directional lighting design. The asymmetrical curved lamp holder has an overall asymmetrical geometric shape, with an inner wall consisting of a modified free-form surface structure used to accurately control the reflection path of light. This structure guides light towards a specific area through changes in curvature gradient, making it an optical element for achieving customized light patterns and glare suppression.

[0044] The aforementioned asymmetric curved surface structure refers to the non-rotationally symmetric, non-spherically symmetric three-dimensional curved surface form used in the inner wall of the lamp holder. The curvature and normal vector at each point on the surface of the asymmetric curved surface structure vary spatially according to the preset optical path requirements, reflecting incident light at non-uniform angles, thus achieving the shifting, elongation, or convergence of the light spot. The curvature parameters of the asymmetric curved surface structure can be improved using computer-aided optical simulation, allowing light to propagate along a preset path. For example, through quadratic or freeform surface design, the beam's central axis can be offset towards the lower part of the door panel or the storage area on the side of the seat. The offset angle relative to the vertical direction is usually controlled within a small range to ensure that the light avoids the user's head area. This small range can be between 20° and 24°.

[0045] The aforementioned quadric surface is a regular surface with analytical equations. The geometry of a quadric surface can be accurately described by a finite number of parameters, such as radius of curvature and eccentricity, making it suitable for basic focusing and deflection of light paths. For example, using a paraboloid of revolution to reflect a point light source in a specific direction offers advantages such as simple design and mature manufacturing processes.

[0046] The aforementioned freeform surface design is an irregular three-dimensional surface without analytical expressions. Constructed using discrete point clouds or non-uniform rational B-splines (NURBS) mathematical models, it overcomes symmetry limitations and independently controls the curvature gradient across multiple spatial dimensions, thereby achieving precise "sculpting" of the beam's shape, direction, and energy distribution. For example, the beam can be extended horizontally to cover the entire length of a door panel storage area, while simultaneously narrowing the beam vertically to avoid irritating the user's eyes.

[0047] Asymmetric curved surface structures can employ segmented composite curved surfaces, dividing the lamp holder into a collimation segment near the light source, a deflection segment in the middle, and a shaping segment at the light exit. Each segment independently improves its curvature to collaboratively achieve optical axis shift. Asymmetric curved surface structures can also employ a composite structure of refraction and reflection, adding an asymmetric refractive lens in front of the light source to complete the initial optical path adjustment, and then achieving secondary directional reflection through a low-reflectivity metal surface.

[0048] The aforementioned first beam is a collection of emitted light with a clear direction and distribution pattern, formed by reflection from an asymmetric curved lamp holder. The intensity distribution of the first beam is designed to avoid areas sensitive to the human eye and concentrate it on the target functional area. The first beam is not naturally diffused light, but rather directional light output after reflection and shaping, serving as the final optical carrier for achieving comfortable lighting.

[0049] In one optional embodiment, the asymmetric curved lamp holder is entirely enclosed outside the light source module. The inner wall of the asymmetric curved lamp holder adopts an asymmetric, non-rotationally symmetric free-form surface structure, with its overall contour extending outwards towards the armrest component, forming an optical guiding shape that is lower at the front and higher at the back, expanding outwards and contracting inwards. The curved surface structure of the asymmetric curved lamp holder has a non-uniform curvature, which is a segmented improvement structure along the optical axis. The curved surface near the light source area has a strong collimation capability, used for initial light convergence. The middle section of the curved surface gradually tilts outwards, guiding the beam to diffuse along the longitudinal extension direction of the inner wall of the door, making the illumination spot distributed in a slender rectangular shape, covering the door panel storage compartment, armrest base area, and user hand movement range along the armrest line, ensuring that the functional areas receive sufficient and continuous illumination. At the upper edge of the curved surface, near the user's likely line of sight, the curvature transitions smoothly and gradually, forming a natural light path cutoff line. This effectively suppresses upward scattering and escape of light, allowing stray light at high angles to be absorbed or reflected back into the main light path by the surface's own structure. The inner surface of the lamp bowl is also treated with a high-reflectivity coating to ensure efficient light energy utilization. At the same time, the surface microstructure design further suppresses specular reflection, resulting in a soft light pattern without obvious bright spots.

[0050] For example, the asymmetric curved lamp reflector is injection molded from transparent polymethyl methacrylate material, completely encasing the linear light source module composed of two LED chips. The inner wall of the lamp reflector is a non-rotationally symmetric free-form surface, divided into three functional sections along the optical axis. The first section is the near-light source area, possessing strong collimation capabilities, initially converging the LED light with an original divergence angle of approximately 120° to within 45°. The second section is the middle transition area, allowing the beam to spread longitudinally along the inner wall of the door, forming a rectangular light spot with a width of 120mm and a length of 280mm, projecting onto the door panel storage compartment below the armrest and the area where the user's hands naturally rest. The third section is the upper edge cutoff area, with a radius of curvature increased to over 60mm, causing most of the upward-scattered light to be absorbed or reflected back into the main light path by the curved inner wall, with only a small amount of stray light reaching the test plane at the user's eye level.

[0051] In another alternative embodiment, the asymmetrical curved lamp holder bends inward toward the armrest with an asymmetrical curved structure, and after covering the light source module, it reflects the light to form a first beam, so that the beam is preferentially projected onto the storage space below the armrest. The high curvature area of ​​the curved surface concentrates the light intensity, while the low curvature area transitions smoothly, achieving coordinated control of light spot edge softening and area coverage.

[0052] This application embodiment uses an asymmetrical curved surface structure to directionally reflect and shape light, effectively avoiding glare paths, guiding the light beam to the target area, improving lighting efficiency and visual comfort, and achieving a unity of functionality and human factors.

[0053] The aforementioned light-shielding grille structure is an array of multiple slender, low-reflectivity spacers, positioned at the light-emitting end of the asymmetrical curved lamp holder. The geometric arrangement of the light-shielding grille structure is designed in conjunction with the optical path to selectively block stray light rays deviating from the main optical path. The light-shielding grille structure achieves beam purification through physical shielding, ensuring that only light rays conforming to the preset propagation direction pass through. It is a key auxiliary component for improving beam purity and control accuracy.

[0054] The aforementioned light-emitting area refers to the interface area where the reflected light from the asymmetric curved lamp holder finally escapes; it is the transition boundary where the light beam transitions from inside the lamp holder to the external environment. The light-emitting area serves as the mounting carrier for the light-shielding grille structure. The shape and position of the light-emitting area must accurately match the end of the curved surface of the lamp holder to ensure that the grille effectively intercepts scattered light escaping from the edge or non-target angles, thus guaranteeing the integrity of the light path control.

[0055] The aforementioned scattered light beams refer to light components that deviate from the main light path and diffuse irregularly during reflection in an asymmetric curved lamp holder due to material defects, surface roughness, or abnormal incident angles. These beams lack directionality and easily cause glare, blurred light spots, or uneven illuminance, making them a major source of interference affecting lighting comfort. They need to be filtered through a light-shielding structure.

[0056] The second beam described above is the beam that remains after the scattered beams have been filtered out by the light-shielding grid structure, and conforms to the preset propagation path. The directionality and distribution of the second beam are determined collaboratively by the asymmetric curved lamp holder and the grid. The second beam is the effective illumination light that ultimately acts on the target area, possessing high directionality, low stray interference, and good illuminance consistency.

[0057] In one optional embodiment, a light-shielding grille structure is disposed in the light-emitting area of ​​the asymmetrical curved lamp bowl. The grille plates are arranged parallel to the main direction of the light beam to block the lateral scattered light beam generated by the reflection from the edge of the curved surface, so that the second light beam is output to the first area only along the main optical axis direction designed by the lamp bowl, thereby improving the sharpness of the light spot edge and the clarity of the area coverage.

[0058] In another alternative embodiment, the light-shielding grille structure is embedded in the light-emitting area in a multi-layered staggered manner. The grille depth and gap ratio are structurally improved to allow only the second beam within a preset angle range to pass through, while intercepting the diffuse reflection beam formed by multiple reflections from the inner wall of the lamp bowl, thus ensuring the collimation and consistency of the output beam.

[0059] In another alternative embodiment, a multi-layered, staggered light-shielding grille structure is embedded behind the light-emitting area of ​​the lamp holder. The arrangement of each grille layer is mutually deflected or orthogonal, forming a multi-level optical filtering network in three-dimensional space. This structure, by designing the proportional relationship between the depth of the light-shielding grille structure and the adjacent gaps, constructs a pathway mechanism with a highly selective light propagation angle. That is, only the second beam propagating along a preset target direction can smoothly penetrate the multi-layered structure, while stray beams generated by multiple diffuse reflections from the inner wall of the lamp holder, which are directionally dispersed and have attenuated energy, are intercepted and absorbed layer by layer because their incident angle exceeds the allowable range. Each grille layer is made of a highly absorbent material, and its surface undergoes a special microstructure treatment to minimize secondary reflections. Simultaneously, the edges of the light-shielding grille structure feature a smooth transition design, effectively suppressing light diffraction and scattering interference. The synergistic effect of the multi-layered structure not only improves the directional purity and energy concentration of the main beam but also enhances the consistency and boundary clarity of the light pattern, ensuring that the illumination spot remains stable and uniform under different usage postures and assembly conditions, without halo or drift.

[0060] This application embodiment selectively filters scattered light through a light-shielding grille structure, improving the directional purity and illuminance uniformity of the main beam, eliminating stray light interference, and enhancing the accurate control capability and visual comfort of the lighting system.

[0061] The aforementioned reflective structure is an optical interface component disposed on the surface of the first region. It employs a high diffuse reflectance material or a microstructured surface design to receive incident light from the second beam and uniformly scatter it in multiple directions. The reflective structure does not create specular reflection; instead, it achieves a soft secondary light distribution through micro-roughness or a high-reflectance coating, making it a key end-element for achieving glare-free, wide-coverage illumination. The reflective structure can utilize a high diffuse reflectance material to ensure low secondary light emission efficiency loss. The reflectivity of this high diffuse reflectance material can be greater than 80%. For example, the high diffuse reflectance material can be white polyethylene terephthalate (PET) or a microporous foam layer, ensuring secondary light emission efficiency loss is less than 20%.

[0062] The first area mentioned above refers to the intermediate target area where the second beam is guided by the asymmetric curved lamp holder and the light-shielding grille structure. This area is typically a structural surface inside the vehicle. The first area is not the final illumination target, but rather serves as a light energy relay station, receiving and transforming the beam shape to provide stable incident conditions for subsequent diffuse reflection. This structural surface inside the vehicle can refer to the door panel lining, armrest sidewall, or headliner transition area.

[0063] The aforementioned preset areas are target spaces within the vehicle that require effective lighting, determined through ergonomics and lighting function analysis, such as user reading areas, storage compartments, or operating areas around armrests. These preset areas do not directly expose light sources; instead, they achieve soft coverage through indirect lighting via reflective structures, ensuring that the lighting is free of direct rays, shadows, and glare.

[0064] In one alternative embodiment, the reflective structure is attached to the inner wall surface of the first region, and the second beam is incident on the diffuse reflection surface at a specific angle. After being uniformly scattered by the microstructure surface, the light diffuses in all directions and covers the preset area, forming a soft lighting environment with no shadows and low contrast.

[0065] In another alternative embodiment, the reflective structure is an arc-shaped plate independently installed in the first area. The second beam is projected from the side onto the curved reflective surface. The curvature design is used to evenly diffuse the beam to different height positions in the preset area to achieve longitudinal illumination coverage and avoid local over-brightness or dark areas.

[0066] This application embodiment transforms a concentrated beam of light into uniform and soft secondary illumination through diffuse reflection, eliminating direct glare, improving visual comfort and lighting consistency in the preset area, and achieving a safe, natural, and interference-free user experience.

[0067] In this embodiment, a light source module is disposed at a preset position on the armrest component of the vehicle and is used to output light; an asymmetrical curved lamp holder is covered on the light source module, and the inner wall of the asymmetrical curved lamp holder is an asymmetrical curved structure, used to reflect light to form a first beam; a light-shielding grille structure is disposed in the light-emitting area of ​​the asymmetrical curved lamp holder, and the light-shielding grille structure is used to block the scattered beam in the first beam so that the second beam in the first beam is output to the first area along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam; a reflection structure is disposed in the first area and is used to diffusely reflect the second beam to the preset area of ​​the vehicle. This application embodiment employs a collaborative optical control method involving a light source module, an asymmetric curved lamp holder, a light-shielding grille, and a reflective structure. The asymmetric curved lamp holder directionally reflects the light source to form an initial beam, the light-shielding grille structure filters out scattered light deviating from the main light path, and the reflective structure in the first region diffusely reflects the remaining beam to a preset area of ​​the vehicle. This achieves the goal of accurately controlling the beam propagation path, thereby realizing the technical effect of light only covering the preset area and avoiding the head-sensitive area, thus solving the technical problem of poor lighting effect inside the vehicle in related technologies.

[0068] Optionally, the light-shielding grid structure includes: multiple light-absorbing structures, arranged at preset distance intervals, for absorbing scattered light beams, so that the second beam in the first beam is output to the first area along a preset path.

[0069] The aforementioned light-absorbing structure is the basic unit in the light-shielding grid structure. It is made of high-absorbency materials or surface treatment processes, possessing low reflectivity and strong light absorption capabilities. The function of the light-absorbing structure is to convert the incident scattered light beam into thermal energy or other non-visible forms of energy, preventing secondary reflection or scattering from interfering with the main optical path, thereby ensuring the purity and collimation of the second beam.

[0070] For example, the preset distance interval of the light-absorbing structure is calculated based on the incident angle of the light, and is usually 2mm to 5mm. The depth-to-spacing ratio is greater than 3:1, so as to effectively block stray light with an angle of deviation of more than 30°.

[0071] The aforementioned preset distance interval refers to the center-to-center spacing of multiple light-absorbing structures arranged in space according to a specific pattern. These parameters are optically designed in coordination based on the incident light angle, beam width, and shading requirements. A reasonable spacing ensures that the light-absorbing structures effectively cover the path of scattered light without obstructing the main beam, achieving a balance between interception efficiency and transmittance.

[0072] In one optional embodiment, the light-shielding grid structure is composed of multiple light-absorbing structures arranged at preset distance intervals. If the scattered beam in the first beam is incident at an off-angle, the light-absorbing structure absorbs energy, while the second beam can pass through without obstruction because its direction matches the light-transmitting gap, and is finally stably output to the first area along the preset path, thereby achieving the purification and directional conduction of the beam.

[0073] The design of this application embodiment efficiently filters out scattered light through a light-absorbing structure, improves the purity and directional controllability of the main beam, effectively reduces the risk of glare, and enhances the accuracy and visual comfort of lighting.

[0074] Optionally, the asymmetric curved surface structure has a gradient curvature distribution on the first axis in the preset spatial coordinate system, so that the light beam is reflected to form a first beam with a preset angle to the second axis; wherein, the preset spatial coordinate system is constructed with the origin, the first axis, the second axis and the third axis. The preset spatial coordinate system takes the light emission center of the light source module as the origin, the direction of the vehicle's front as the first axis, the direction parallel to the vehicle's chassis and perpendicular to the first axis as the third axis, and the plane perpendicular to the first axis and the third axis as the second axis.

[0075] The aforementioned preset spatial coordinate system is a three-dimensional reference system established to uniformly describe the spatial relationships of optical components inside the vehicle, with the light-emitting center of the light source module as the origin. The axis of the preset spatial coordinate system is aligned with the inherent geometric direction of the vehicle, ensuring that all optical design parameters have physical interpretability and engineering consistency, and serves as the basic framework for realizing spatial optical path modeling and simulation analysis.

[0076] The first axis mentioned above is a reference axis along the longitudinal direction of the vehicle in a preset spatial coordinate system, defined as the direction from the rear of the vehicle to the front. The first axis is used to describe the projection tendency of the light beam in the front-rear direction of the vehicle and is a key reference dimension for determining whether the light is deviating towards the user's head or functional area.

[0077] The second axis mentioned above is the axial direction perpendicular to the plane formed by the first and third axes, i.e., the vehicle's vertical axis, pointing towards the roof. The second axis is used to define the vertical projection tendency of the light beam and is the core reference direction for controlling whether the light avoids the horizontal line of sight of the human eye and realizing "pedestrian-light separation".

[0078] The aforementioned third axis is parallel to the vehicle chassis and perpendicular to the first axis; it is the vehicle's lateral axis, pointing towards the door. The third axis describes the beam's ability to deflect in the left-right direction, determining whether the light is projected towards the door storage area or the functional area on the side of the armrest.

[0079] The aforementioned preset angle refers to the fixed spatial angle formed by the first beam relative to the second axis. The preset angle is determined by the gradient curvature distribution of the asymmetric curved surface structure, which is used to ensure that the reflected beam deflects toward the target area in a non-perpendicular manner, thereby avoiding the sensitive area of ​​the human eye and achieving directional illumination.

[0080] In one optional embodiment, the asymmetric curved surface structure presents a continuous gradient curvature distribution on the first axis of the preset spatial coordinate system, so that the light emitted by the light source, after reflection, forms a preset angle with the second axis, and the light beam is inclined and diffused in the direction of the third axis, realizing directional projection from the center of the light source to the lateral functional area of ​​the vehicle, while suppressing the direct light component along the vertical direction.

[0081] This application embodiment achieves accurate deflection of light in the vehicle coordinate system by adjusting the spatial tilt angle of the beam through curvature gradient, effectively avoiding the line of sight of the human eye, improving the directionality and comfort of lighting, and reducing glare interference.

[0082] Optionally, the device further includes: a light detection device for detecting the ambient light intensity inside the vehicle; and a control device connected to the light detection device and the light source module for activating the light source module when the ambient light intensity is detected to be less than a preset light intensity.

[0083] The aforementioned illumination detection device is a sensing element used to perceive the ambient light level inside the vehicle. It can collect ambient light intensity signals and convert them into electrical signals that can be recognized by the control system. Illumination detection devices typically have a wide dynamic response range and anti-interference capabilities, ensuring accurate determination of lighting requirements under different external lighting conditions.

[0084] The aforementioned control device is an electronic unit integrating logic judgment and drive command output functions. It is electrically connected to the light detection device and the light source module, and triggers a preset response strategy based on the input ambient light signal. The core function of the control device is to automatically activate the light source module if the conditions of the preset response strategy are met, thereby realizing the autonomous start and stop of the lighting system and improving the system's intelligence and energy efficiency.

[0085] The ambient light intensity mentioned above refers to the level of natural and artificial mixed lighting in the space inside the vehicle, which is an objective basis for determining whether auxiliary lighting needs to be activated. Ambient light intensity fluctuates dynamically with factors such as day-night cycle, weather changes, or tunnel entry and exit. The control device determines the lighting behavior based on this to ensure the timely activation of the function.

[0086] The aforementioned preset light intensity is a threshold benchmark set by the system to distinguish between environments requiring lighting and those that do not. The preset light intensity is set based on human eye perception characteristics and functional lighting needs. When the light intensity is below this value, the system determines it as a low-light environment, triggering the light source module to start, thus avoiding human intervention and achieving automated response.

[0087] In one optional embodiment, the light detection device continuously monitors the ambient light intensity inside the vehicle and transmits the signal to the control device. If the detected ambient light intensity is lower than a preset light intensity, the control device automatically sends a start command to the light source module, causing the light source module to turn on and output light without user operation, thus realizing intelligent triggering of the lighting function.

[0088] The embodiments of this application realize environmentally adaptive start and stop of lighting, improve ease of use and energy efficiency, avoid unnecessary energy consumption, and ensure that lighting intervenes at the appropriate time, thereby enhancing the seamlessness and comfort of human-computer interaction.

[0089] Optionally, the device further includes: an object detection device for detecting whether a target object exists inside the vehicle; and a control device connected to the object detection device and the light source module for activating the light source module when a target object is detected inside the vehicle.

[0090] The aforementioned object detection device is a sensing unit used to detect the presence of a user inside a vehicle. It determines whether a target object is within the effective sensing area using non-contact methods such as infrared, microwave, or visual recognition. The function of the object detection device is to identify the presence of people, preventing accidental triggering of lighting when no one is present, and improving the system's response accuracy and energy efficiency.

[0091] The target users mentioned above refer to users inside the vehicle who are using the lighting function. The presence of the target user is a condition for triggering the lighting system. The target user can be in a preset posture, which can be a sitting posture, a reading posture with the head slightly tilted forward and the gaze focused on the door panel storage compartment or the center armrest area, or a semi-reclining posture during a brief stay at night, where the head is already within the effective coverage area of ​​the armrest lighting, etc. The preset postures are modeled based on data collected from real-world scenarios, jointly identified by multimodal sensors inside the vehicle, and the lighting intention confidence is judged by a lightweight artificial intelligence (AI) algorithm. The lighting is activated when the confidence is higher than a preset threshold to avoid false triggering and ensure the accuracy and intelligence level of the system response.

[0092] In one optional embodiment, the object detection device continuously monitors whether a target object appears inside the vehicle. If a user is detected in the vicinity of the handrail, the control device receives a status signal and activates the light source module, so that the lighting automatically turns on when someone is using it and remains off when no one is using it, thereby realizing intelligent control of lighting on demand.

[0093] The embodiments of this application enable on-demand activation of lighting, improve the system's intelligence level and usage efficiency, and enhance the naturalness of user interaction and the comfort of the experience.

[0094] Optionally, the device further includes: a light intensity adjustment device connected to the light detection device, used to generate light intensity timing control parameters according to the ambient light intensity, wherein the light intensity timing control parameters are used to represent control parameters that change over time; and a control device connected to the light intensity adjustment device, used to adjust the light intensity of the light output by the light source module according to the light intensity timing control parameters after the light source module is started.

[0095] The aforementioned light intensity adjustment device is an intelligent unit that dynamically generates light intensity control rules based on ambient light intensity. The device receives data from the light detection device and, based on a preset function model or algorithm, outputs time-series control parameters for light intensity that evolve over time. This achieves smooth transitions and adaptive adjustment of lighting intensity, ensuring that the output brightness is synchronized with environmental changes and avoiding abrupt stimuli.

[0096] The aforementioned light intensity adjustment device employs an adaptive brightness adjustment algorithm based on logarithmic mapping. This algorithm takes the real-time illuminance value collected by the ambient light sensor as input and calculates the target output brightness ratio through a nonlinear logarithmic function. The algorithm simulates the logarithmic perception characteristics of the human eye to changes in light intensity, making the brightness adjustment conform to the visual adaptation law. It achieves a smooth and abrupt light intensity transition during the gradual change of ambient light, effectively avoiding visual discomfort and fatigue caused by sudden increases or decreases in brightness.

[0097] The aforementioned light intensity timing control parameters are a set of dynamic instructions describing the change in light source output intensity over time, reflecting time-varying characteristics such as brightness decay, gradual increase, or periodic adjustment. The non-fixed nature of the light intensity timing control parameters allows the system to intelligently match the illumination order according to the gradual changes in ambient light, achieving a light environment evolution that is more in line with the physiological adaptation of the human eye.

[0098] In one optional embodiment, the light intensity adjustment device generates gradually increasing light intensity timing control parameters based on the continuous decreasing trend of ambient light intensity. After the light source module is activated, the control device increases the output brightness at a gradual rate according to the above parameters, so that the light intensity increases naturally as the environment darkens.

[0099] The embodiments of this application realize dynamic adaptive adjustment of lighting intensity, improve the smoothness of light environment transition and human-factor adaptability, and enhance the comfort and visual continuity of nighttime use.

[0100] Optionally, the device further includes a heat dissipation substrate, which is attached to the bottom surface of the light source module to conduct the heat generated by the light source module during operation to the metal structure of the handrail component.

[0101] The aforementioned heat dissipation substrate is a heat conduction component that fits tightly against the bottom surface of the light source module. Made of a highly thermally conductive material, it efficiently collects the heat generated during light source operation and transfers it to adjacent structures via a heat conduction path. The heat dissipation substrate reduces the junction temperature of the light source, ensuring stable optical performance and serving as a thermal management component for long-term reliable operation.

[0102] The metal structure of the aforementioned armrest component is a load-bearing component in the vehicle interior with high heat capacity and thermal conductivity, typically possessing a large volume and good heat dissipation capabilities. As the end heat sink of the heat dissipation path, the metal structure, after being connected to the heat dissipation substrate, can evenly distribute heat to the surrounding environment, achieving passive and efficient heat dissipation without the need for additional cooling devices.

[0103] In one optional embodiment, the heat dissipation substrate is directly attached to the bottom surface of the light source module, conducting the working heat to the metal structure of the handrail component in contact with it. The metal structure uses its heat capacity and surface area to naturally diffuse the heat to the surrounding air, forming a stable heat dissipation channel, ensuring that the light source module maintains low temperature operation during continuous operation.

[0104] This application embodiment integrates heat conduction path into the vehicle body structure to achieve passive, quiet, and efficient heat dissipation management, extend the life of the light source, maintain the stability of light output, and improve the long-term reliability and safety of the system.

[0105] According to an embodiment of this application, a vehicle interior lighting method is also provided, applied to the aforementioned vehicle interior lighting device. Figure 2 This is a flowchart of a vehicle interior lighting method according to an embodiment of this application, such as... Figure 2 As shown, the method includes:

[0106] Step S202: Control the light source module to output light, wherein the light source module is set at a preset position on the handrail component.

[0107] In one optional embodiment, if a control command is triggered, the light source module located at a preset position on the armrest component is activated. The light emitted by the light source module is guided by its internal optical structure and diffused towards areas not directly in sight, achieving seamless activation of the lighting function and accurate spatial coverage.

[0108] In another optional embodiment, the light intensity module receives the ambient illuminance signal from the Ambient Light Sensor (ALS) and, in conjunction with the user detection signal from the object detection device, initiates a dynamic dimming algorithm based on fuzzy logic. This dynamic dimming algorithm dynamically generates a pulse width modulation (PWM) duty cycle command for the light source module based on the ambient illuminance range and the presence of the person. If a user is detected seated and the ambient illuminance is below a threshold, the algorithm automatically increases the output power of the light source, causing the light intensity to increase non-linearly as the environment darkens. Furthermore, a time smoothing factor is introduced during the adjustment process to ensure the rate of increase in light intensity change, thereby achieving stable output from the light source module.

[0109] For example, the light intensity module integrates an ambient light sensor and an infrared human body sensor to collect real-time data on the ambient illuminance in the cabin and the seating status of rear passengers. If the ALS detects a gradual decrease in ambient illuminance and the infrared sensor confirms that a user has been stationary for an extended period in the area directly behind the armrest, the dimming system triggers a dynamic dimming algorithm based on fuzzy logic. This algorithm categorizes ambient illuminance into three fuzzy input linguistic variables: bright, dusk, and night. It defines the user's state as three state variables: no occupants, brief stay, and continuous seating. Through reasoning based on a preset fuzzy rule base, it outputs a continuous PWM duty cycle control command. For instance, if the ambient illuminance slowly decreases from 50 Lx to 5 Lx, the dimming system does not linearly increase the brightness. Instead, based on the curve of human eye sensitivity to dark environments, it uses a nonlinear gain function to make the light intensity increase gradually in a "slow, fast, gradual" manner. That is, in the initial stage (50–20 Lx), there is only a slight increase to avoid abruptness, and in the middle stage (20–8 Lx), there is a rapid response to ensure sufficient lighting in the functional areas. When approaching complete darkness (<8Lx), the increase in brightness slows down to prevent excessive brightness and discomfort. Simultaneously, the algorithm introduces a time smoothing factor, limiting the light intensity adjustment rate to no more than 5% per second of PWM variation, making the brightness transition as natural as dusk approaching and avoiding visual fatigue caused by flickering or abrupt changes. After the user gets up and leaves, the dimming system does not turn off the light source, but instead, after a 3-second delay, it slowly decays to standby brightness at the same smooth rate, enhancing the human-like interactive experience. These mechanisms not only ensure that just the right amount of lighting is always provided in low-light scenarios, but also achieve a human-centered lighting logic that responds instantly and accompanies silently through intelligent sensing and smooth adjustment, surpassing the rigid experience of fixed brightness or stepped dimming solutions.

[0110] The aforementioned fuzzy rule base is an intelligent decision-making system built upon human expert experience and linguistic logic. It transforms continuous physical inputs (ambient illumination, user status) into fuzzy linguistic variables such as "bright," "dim," "seated," and "short stay," and performs reasoning based on preset "if...then..." rules (e.g., "if the environment is dim and the passenger remains seated, then increase the light brightness") to achieve flexible control over complex, nonlinear, and uncertain scenarios. Unlike traditional hard threshold judgments, the fuzzy rule base allows input values ​​to belong to multiple categories, quantifies the "degree" through membership functions, and weights and fuses the outputs of multiple rules to ultimately generate continuous and smooth control commands, thus avoiding the abruptness and visual discomfort caused by on / off responses. In this embodiment, the fuzzy rule base integrates multi-dimensional information from ambient light sensors and human detection devices to dynamically generate pulse width modulation duty cycles, causing the light to gradually and nonlinearly increase as the environment dims and then gradually decrease after the passenger leaves. This achieves intelligent lighting adjustment that closely resembles human perception habits, improving the comfort, adaptability, and humanization of the in-vehicle lighting system. For example, if the environment is at night and passengers remain seated, the output power of the LED lights should be high.

[0111] This application embodiment achieves synergy between lighting function and human usage habits by accurately activating the light source module at a preset position on the handrail, ensuring effective lighting while avoiding glare interference, and improving safety and comfort.

[0112] Step S204: The light is reflected by the asymmetric curved lamp bowl to form a first beam, wherein the interior of the asymmetric curved lamp bowl is an asymmetric curved surface structure.

[0113] In one optional embodiment, the light emitted by the light source is incident on the inner wall of the asymmetric curved lamp bowl. After being reflected by the asymmetric curved structure, the light beam is shifted in a predetermined spatial direction, forming a first light beam with a concentrated direction and clear boundaries. The original light source position is blocked by the structure, ensuring that the user cannot directly see the light source.

[0114] In another alternative embodiment, the asymmetric curved lamp bowl receives the diffused light from the light source module. Through the curvature changes of different regions on the inner surface, the light is directed to two non-overlapping regions to form a first beam with spatial separation characteristics, achieving simultaneous illumination of multiple target areas without cross-interference.

[0115] This application embodiment achieves directional reflection control of light through an asymmetrical curved surface structure, avoids direct glare, improves light energy utilization efficiency, makes the lighting area accurate, soft and free of visual interference, and enhances user comfort and functional practicality.

[0116] Step S206: Use a light-shielding grid structure to block the scattered beam in the first beam so that the second beam in the first beam is output to the first region along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam.

[0117] In one optional embodiment, the first beam enters the light-shielding grid structure, and the internal scattered beam is absorbed by the grid barrier. The second beam, because its direction is consistent with the light-transmitting gap of the grid, passes through without obstruction and extends along a preset path, eventually uniformly covering the first area to form a stable, stray light-free lighting effect.

[0118] In another alternative embodiment, the light-shielding grid structure is arranged in a multi-layer nested manner at the light-emitting end of the asymmetric curved lamp bowl. The scattered beams that deviate from the main axis in the first beam are intercepted and absorbed multiple times on the inner wall of the grid, leaving only the second beam to penetrate and be output, thereby achieving deep purification of the beam and ensuring that the first area obtains highly collimated illumination.

[0119] This application embodiment uses a light-shielding grid structure to accurately filter stray light, improve the purity of the beam direction and the clarity of illumination, eliminate ambient interference light, achieve glare-free, high-contrast directional lighting, and enhance visual comfort and functional practicality.

[0120] Step S208: The second beam is diffusely reflected to a preset area of ​​the vehicle using a reflective structure.

[0121] In one optional embodiment, the second beam is incident on the surface of the reflective structure. After being uniformly scattered by the microstructure, the light energy diffuses in multiple directions and covers the preset area of ​​the vehicle, forming a soft and continuous background illumination without obvious light spots or dark areas, thus achieving natural penetration of ambient light.

[0122] In another alternative embodiment, the reflective structure is fitted to the curved surface of the vehicle interior. The second beam is projected onto the surface of the reflective structure at a specific angle. After diffuse reflection, the light spreads evenly along the extension direction of the curved surface, so that the preset area receives consistent low-intensity illumination without visual oppression.

[0123] This embodiment converts directional light into ambient light through diffuse reflection, achieving glare-free, low-contrast, and wide-area coverage lighting, improving spatial visual comfort, and allowing the lighting effect to naturally blend into the vehicle's interior environment, enhancing the user's sense of relaxation and user experience.

[0124] According to an embodiment of this application, a vehicle interior lighting device is also provided, comprising: a light source module disposed at a preset position on an armrest component in the vehicle for outputting light; an asymmetrical curved lamp holder covering the light source module, the inner wall of the asymmetrical curved lamp holder having an asymmetrical curved structure for reflecting light to form a first beam; a light-shielding grille structure disposed in the light-emitting area of ​​the asymmetrical curved lamp holder, the light-shielding grille structure for blocking the scattered beam in the first beam, so that a second beam in the first beam is output to a first area along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam; and a reflection structure disposed in the first area for diffusely reflecting the second beam to a preset area of ​​the vehicle.

[0125] The light-shielding grid structure also includes multiple light-absorbing structures, which are set at preset distance intervals to absorb the scattered light beams so that the second beam in the first beam is output to the first area along a preset path. Figure 3 This is a schematic diagram illustrating the location of a vehicle interior lighting device according to an embodiment of this application, such as... Figure 3 As shown, the system includes an armrest component 302, a light source 304, and a user 306. When the user is seated in the vehicle, the armrest component is positioned to the user's upper left or upper right. The light source module is located inside or along the lower edge of the armrest component 302, emitting light towards the side wall of the vehicle door panel. The light source 304 undergoes directional reflection by an asymmetric curved lamp holder, avoiding the user's eye level area. Stray light is then filtered out by a light-shielding grille, and finally, secondary diffuse reflection occurs by the high-diffuse-reflection material on the inner side of the door panel, evenly covering the vestibule, storage compartments, and hand operating areas. This embodiment achieves accurate lighting that is not glaring yet provides the necessary illumination, improving comfort and safety during nighttime use.

[0126] Figure 4 This is a schematic diagram of a light-shielding grille structure according to an embodiment of this application, as shown below. Figure 4 As shown, the light-shielding grille structure 404 includes multiple light-shielding structures 402, arranged at preset intervals along the light path emission direction. Each light-shielding structure is made of a high-absorption, low-reflection material, and its surface is treated with a special texture to suppress secondary reflection. These light-shielding structures are asymmetrically distributed in space, and their arrangement matches the optical design of the lamp holder, aiming to intercept scattered light beams that deviate from the target light path after originating from the light source, preventing them from spreading towards the passenger's eye area. Light beams conforming to the preset propagation direction can pass smoothly through the grille gaps and be accurately projected onto designated areas, such as door panel storage compartments or the side lighting area of ​​the armrest. Without increasing the power of the light source, this structure achieves accurate filtering and isolation of the light path through physical blocking, effectively improving the purity and uniformity of illumination in the target area, while reducing glare interference and enhancing user visual comfort. It also boasts advantages such as compact structure, strong process compatibility, and ease of integrated manufacturing.

[0127] Figure 5 This is a schematic diagram of an optional vehicle interior lighting device according to an embodiment of this application, such as... Figure 5 As shown, the vehicle interior lighting device 506 includes a light detection device 502 and a control device 504. The light detection device and the control device establish a data interaction relationship through a signal line or an onboard communication bus. The light detection device continuously collects ambient light intensity and user location information to achieve adaptive control of the light source. By sensing the external lighting environment, the light detection device can dynamically adjust the output power of the light source to ensure that the output of the light source is maintained within the optimal visual comfort range. Subsequently, the light detection device transmits the above information to the control device. The control device processes the input data based on a preset algorithm, such as fuzzy logic or a logarithmic mapping model, generates corresponding light intensity control commands, and outputs them to the light source module to achieve dynamic adaptive adjustment of lighting brightness.

[0128] This application's embodiment modifies the shape of the lamp holder, specifically by designing a special curved surface structure. This asymmetrical lamp holder can accurately control the light path, allowing the light to propagate along a preset ray direction, thereby avoiding areas sensitive to the human eye and accurately guiding the beam to functional areas requiring illumination, such as vestibules and storage compartments.

[0129] The lighting chips utilize low color temperature and high color rendering LED light sources to ensure soft and uniform light output, reducing glare from the light source end. The optical characteristics of the chips are closely matched with the light guide structure of the lamp holder, further improving the accuracy of the light pattern and illumination efficiency.

[0130] In terms of surface design and light direction, the lamp holder adopts a special curved shape, and computer-aided optical simulation is used to improve the curvature parameters so that the light propagates along a preset path. For example, through the design of a quadratic or freeform surface, the central axis of the light beam is offset towards the lower part of the door panel or the storage area on the side of the seat. The offset angle relative to the vertical direction is usually controlled between 20° and 24° to ensure that the light avoids the area around the passenger's head.

[0131] In terms of improving light distribution, asymmetric lenses can adjust the light distribution into a rectangular or trapezoidal spot, with the long axis extending longitudinally along the door panel and the short axis controlling the light width to avoid lateral scattering. For example, typical luminous efficacy parameters are a beam angle of 60° x 30° (horizontal × vertical), achieving uniform illumination in functional areas, i.e., a minimum / maximum illuminance ratio higher than 0.6, reducing localized areas that are too dark or too bright.

[0132] Regarding the use of light-shielding grilles and physical light-shielding structures, optical design needs to be combined with physical light-shielding methods to further block stray light. This application's embodiment utilizes integrated micro-light-shielding grilles, adding multiple layers of grilles in front of the light-emitting port of the lamp holder. The grille spacing is calculated based on the angle of incidence of light. For example, the grille spacing is typically 2mm to 5mm, and the ratio of grille depth to spacing is greater than 3:1, effectively blocking stray light deviating at angles greater than 30°. Low-reflectivity materials can be selected, such as polycarbonate or acrylonitrile butadiene styrene copolymer. The material surface can also be micro-textured to reduce reflectivity.

[0133] The handrail design in this application utilizes the handrail's own structure as a light-shielding barrier. Through ergonomic analysis, the lower contour of the handrail extends above the light fixture, forming a natural light-shielding eave. For example, the eave should be at least 50mm wide and have a downward angle of 15° to 25° to ensure that there is no direct light source exposure within the passenger's line of sight while seated.

[0134] Regarding the repositioning of the light-emitting unit, embodiments of this application move the light-emitting unit from the top down to the lower part of the armrest or to a hidden side position.

[0135] This embodiment employs low-position side lighting, with the LED module installed in a recess below the armrest, emitting light towards the door panel rather than the passenger. The installation height is recommended to be below the passenger's eye level while seated, utilizing the armrest itself to block upward-scattered light.

[0136] This application utilizes indirect lighting technology, employing a reflective lighting scheme. Light first shines onto the inner side of the door panel or a light-colored ceiling panel, and after diffuse reflection, softly covers the functional area. The reflective surface can be made of a high diffuse reflection material to ensure that the secondary light emission efficiency loss is less than 20%. For example, the high diffuse reflection material can be white PET or a microporous foam layer, ensuring that the secondary light emission efficiency loss is less than 20%.

[0137] The intelligent ambient light sensing and dimming system of this application introduces a closed-loop control mechanism to adapt to different ambient lighting conditions. It employs multi-sensor fusion, integrating an ambient light sensor (ALS) and an infrared sensor. The ALS monitors ambient illuminance and automatically triggers lighting based on day / night cycles. The infrared sensor detects the user's presence, avoiding idle power consumption.

[0138] A multi-level dimming algorithm is employed, utilizing LED drivers to support PWM dimming (frequency > 1kHz to avoid flicker), with no fewer than 256 dimming levels. The algorithm dynamically adjusts the output based on ambient illuminance, ensuring that the illuminance in the functional areas remains stable within the range of 18Lx to 23Lx.

[0139] For example, in Night mode, if the ambient illuminance is <5Lx, the LED outputs 100% power. In Dusk mode, if the ambient illuminance is between 5Lx and 50Lx, the LED outputs 50% to 70% power. In Daylight mode, if the ambient illuminance is >50Lx, the LED output power is turned off or maintained at 10%, i.e., only the outline function is used.

[0140] The light source selection and optical performance parameters in this application embodiment are as follows: For example, the LED light source characteristics can be selected from surface-mount LEDs with low color temperature (2700 Kelvin to 3000 Kelvin) and high color rendering index (CRI) greater than 90, ensuring soft light and true color reproduction. The single-lumen luminous flux is set to 30 to 50 lumens, and the power consumption is less than 1 watt.

[0141] The thermal management design uses an aluminum or ceramic substrate for the LED. For example, since the thermal resistance of the LED aluminum or ceramic substrate is less than 5K / W, it can be combined with the heat dissipation of the handrail metal structure to ensure a junction temperature of <80℃ and a light decay rate of less than 5%.

[0142] A feasibility and cost analysis of production is conducted. Asymmetrical lamp holders can be manufactured using injection molding; for example, polymethyl methacrylate (PMMA) can be used, with a light transmittance greater than 92%. An anti-reflective coating with a refractive index of 1.23 can be selected for the surface optical coating to improve luminous efficacy. Compared to traditional solutions, the unit cost is higher, but through integrated design, the number of independent lamp body structures can be reduced, thus offsetting some of the increased cost, although the overall material cost is higher.

[0143] The embodiments of this application utilize an integrated armrest lighting fixture with a reflector technology. This integrated armrest lighting achieves the goal of separating pedestrian and glare areas, thus eliminating glare while meeting functional area illuminance standards. This solution not only improves visual comfort and practicality but also embodies user-centric design, providing a widely applicable technological paradigm for in-vehicle lighting. It should be noted that the user information (including but not limited to user device information and personal user information) and data (including but not limited to data used for analysis, stored data, and displayed data) involved in this application are all information and data authorized by the user or fully authorized by all parties. Furthermore, the collection, use, and processing of this data must comply with the relevant laws, regulations, and standards of the relevant countries and regions, and corresponding operation entry points are provided for users to choose to authorize or refuse.

[0144] According to an embodiment of this application, an embodiment of a vehicle interior lighting device is provided. Figure 6This is a schematic diagram of a vehicle interior lighting device according to an embodiment of this application, such as... Figure 6 As shown, it should be noted that this device can be used to perform the aforementioned vehicle interior lighting method, and the device includes:

[0145] The control module 602 is used to control the light output of the light source module, wherein the light source module is set at a preset position on the armrest component; the forming module 604 is used to reflect light to form a first beam using an asymmetrical curved lamp holder, wherein the interior of the asymmetrical curved lamp holder has an asymmetrical curved surface structure; the reflection module 606 is used to block the scattered beam in the first beam using a light-shielding grille structure, so that a second beam in the first beam is output to a first area along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam; the reflection module 608 is used to diffusely reflect the second beam to a preset area of ​​the vehicle using a reflection structure.

[0146] Embodiments of this application also provide a vehicle, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods described in various embodiments of this application when it runs.

[0147] The aforementioned memory can refer to devices inside a computer used to store data and programs, including RAM, hard disks, etc. RAM can be used to temporarily store running programs and data, while hard disks can be used to store programs and data long-term. Memory enables the computer to read and write data and execute programs. The aforementioned processor is responsible for executing instructions in computer programs and performing data processing. It can also be responsible for controlling and executing various operations, including arithmetic operations, logical operations, and data transmission.

[0148] Embodiments of this application also provide a computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of this application.

[0149] The aforementioned computer storage media can refer to the media used in computer memory to store certain discontinuous physical quantities. Computer storage media mainly include semiconductors, magnetic cores, magnetic drums, magnetic tapes, laser discs, etc. Computer-readable storage media include stored programs, which can be a set of instructions that a computer can recognize and execute, running on an electronic computer to meet certain information needs.

[0150] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of this application.

[0151] The aforementioned computer program products can refer to software programs that have been written, tested, and released, and can run on computers or other devices. Computer program products can include application programs, operating systems, utility software, etc., used to achieve specific functions or solve specific problems.

[0152] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program that, when executed by a processor, implements the methods in various embodiments of this application.

[0153] The aforementioned non-volatile computer-readable storage medium can refer to a medium for storing data. Non-volatile computer-readable storage media can retain data without loss when power is off and can be used to store long-term data, such as operating systems, applications, and user files. Non-volatile storage media can include hard disk drives, solid-state drives, optical disks, and flash memory storage devices, etc.

[0154] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of this application.

[0155] The aforementioned computer program can refer to a set of instructions used to tell the computer to perform specific tasks or operations. Computer programs can be written by programmers using specific programming languages ​​and can include algorithms, data structures, logic, and control flow. Computer programs can be used for a variety of purposes, including application software, operating systems, etc.

[0156] In the above embodiments of this application, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0157] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0158] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0159] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0160] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard drive, magnetic disk, or optical disk.

[0161] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A lighting device for the interior of a vehicle, characterized in that, include: A light source module is installed at a preset position on the armrest component in the vehicle and is used to output light. An asymmetrical curved lamp bowl covers the light source module. The inner wall of the asymmetrical curved lamp bowl has an asymmetrical curved surface structure, which is used to reflect the light to form a first beam. A light-shielding grid structure is disposed in the light-emitting area of ​​the asymmetric curved lamp bowl. The light-shielding grid structure is used to block the scattered beam in the first beam so that the second beam in the first beam is output to the first area along a preset path. The second beam is the remaining beam in the first beam excluding the scattered beam. A reflective structure, disposed in the first region, is used to diffusely reflect the second light beam to a predetermined region of the vehicle.

2. The apparatus according to claim 1, characterized in that, The light-shielding grille structure includes: Multiple light-absorbing structures are arranged at preset distance intervals to absorb the scattered light beam, so that the second beam in the first beam is output to the first region along the preset path.

3. The apparatus according to claim 1, characterized in that, The asymmetric curved surface structure has a gradient curvature distribution on the first axis in the preset spatial coordinate system, so that the light beam is reflected to form the first beam with a preset angle to the second axis; The preset spatial coordinate system is constructed with an origin, a first axis, a second axis, and a third axis. The preset spatial coordinate system has the light-emitting center of the light source module as the origin, the direction of the vehicle's front as the first axis, the direction parallel to the vehicle's chassis and perpendicular to the first axis as the third axis, and the plane perpendicular to the first axis and the third axis as the second axis.

4. The apparatus according to any one of claims 1 to 3, characterized in that, The device further includes: A light detection device is used to detect the ambient light intensity inside the vehicle; A control device, connected to the light detection device and the light source module, is used to activate the light source module when the ambient light intensity is detected to be less than a preset light intensity.

5. The apparatus according to any one of claims 1 to 3, characterized in that, The device further includes: An object detection device is used to detect whether a target object exists inside the vehicle; A control device, connected to the object detection device and the light source module, is used to activate the light source module when the target object is detected inside the vehicle.

6. The apparatus according to any one of claims 1 to 3, characterized in that, The device further includes: A light intensity adjustment device, connected to a light detection device, is used to generate light intensity time-series control parameters based on ambient light intensity, wherein the light intensity time-series control parameters are used to represent control parameters that change over time; A control device, connected to the light intensity adjustment device, is used to adjust the light intensity of the light output by the light source module according to the light intensity timing control parameters after the light source module is started.

7. The apparatus according to any one of claims 1 to 3, characterized in that, The device further includes: A heat dissipation substrate is attached to the bottom surface of the light source module to conduct the heat generated by the light source module during operation to the metal structure of the handrail component.

8. A method for lighting the interior of a vehicle, characterized in that, Applied to the apparatus according to any one of claims 1 to 7, comprising: The light source module is controlled to output light, wherein the light source module is disposed at the preset position of the handrail component; The light is reflected to form a first beam by using an asymmetric curved surface lamp bowl, wherein the interior of the asymmetric curved surface lamp bowl has an asymmetric curved surface structure; A light-shielding grid structure is used to block the scattered beam in the first beam so that the second beam in the first beam is output to the first region along a preset path, wherein the second beam is the remaining beam in the first beam excluding the scattered beam; The second beam is diffusely reflected onto a predetermined area of ​​the vehicle using a reflective structure.

9. A vehicle, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method of claim 8.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored executable program, wherein, when the executable program is executed, it controls the device on which the storage medium is located to perform the method of claim 8.

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