Lighting apparatus and vehicle

Abstract

A lighting apparatus and a vehicle, wherein the lighting apparatus comprises a support, a light-transmitting cover plate, a light source assembly, and a light-scattering member. The light-transmitting cover plate is connected to the support, so that an accommodating cavity is formed between the light-transmitting cover plate and the support. The light source assembly is mounted on the support. The light-scattering member is arranged in the accommodating cavity. A plurality of first areas and a plurality of second areas are arranged on the light-scattering member. At least part of the first areas and at least part of the second areas are alternately distributed. The first areas and the second areas are each provided therein with a single or multiple crystal particles used for reflecting light in different directions, and the sizes of the crystal particles in the first areas are smaller than the sizes of the crystal particles in the second areas. According to the present application, the first areas and the second areas are arranged at different positions on the light-scattering member, and crystal particles having different sizes are arranged in the first areas and the second areas, so that different reflection effects can be presented by means of the reflection effects of the crystal particles in different areas on the light, thereby enabling visual effects differing in terms of light and darkness to be achieved when the lighting apparatus is observed at different visual angles.

Description

Lighting devices and vehicles

[0001] This invention claims priority to the Chinese patent application filed with the State Intellectual Property Office on December 8, 2023, with application number 202311690837.9 and application name “Lighting device and vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of lighting technology, and in particular to a lighting device and a vehicle. Background Art

[0003] Car headlights are a vehicle's most iconic components. Existing headlights primarily provide high and low beam illumination, as well as signaling to pedestrians during vehicle operation. Their design and visual effects are relatively monotonous. When operating, the headlights appear uniform from different angles, lacking in distinctiveness.

[0004] Summary of the Invention

[0005] In view of this, the present application provides a lighting device and a vehicle to solve the problem that the visual effects of the existing automobile headlights in different directions are relatively consistent and lack recognition.

[0006] In a first aspect, an embodiment of the present application provides a lighting device, which includes: a bracket, a light-transmitting cover plate, a light source assembly and a light scattering member. The light-transmitting cover plate is connected to the bracket so that a receiving cavity is formed between the light-transmitting cover plate and the bracket. The light source assembly is mounted on the bracket for irradiating a light beam into the receiving cavity. The light scattering member is arranged in the receiving cavity, and a plurality of first areas and a plurality of second areas are arranged on the light scattering member, at least part of the first areas and at least part of the second areas are alternately distributed, and a single or multiple crystal particles are arranged in the first area and the second area, and the size of the crystal particles in the first area is smaller than the size of the crystal particles in the second area. The crystal particles have a plurality of first reflection surfaces, and there is an angle between two adjacent first reflection surfaces.

[0007] The lighting device provided in the embodiment of the present application can present different reflection effects by setting the first zone and the second zone at different positions on the light scattering element, and setting crystal particles of different sizes in the first zone and the second zone. The reflection of light by the crystal particles in different areas can achieve different visual effects of light and dark when observing the lighting device from different viewing angles.

[0008] In one possible implementation, the crystal particles are arranged on one side of the light scattering member along the light emitting direction of the lighting device. In a specific embodiment, the crystal particles are arranged on the side of the light scattering member facing the light-transmitting cover plate, and the light generated by the light source assembly can be incident on the inside of the light scattering member from the side of the light scattering member facing the light source assembly, and then can be emitted from the first reflection surface of the crystal particles to the light-transmitting cover plate. The orientations of the various first reflection surfaces of the crystal particles are different, so that the light emitted by the light scattering member can be directed in different directions, and finally can be emitted to the outside of the lighting device through the light-transmitting cover plate, so that people can feel different light and dark effects when observing the lighting device from different orientations.

[0009] In one possible implementation, the crystal particles have a first size in a first direction and a second size in a second direction, the first direction being perpendicular to the second direction, and the second size being greater than or equal to the first size. The crystal particles include first particles and second particles, with the first size of the second particles being greater than the second size of the first particles. The maximum dimension of the first particles is smaller than the minimum dimension of the second particles, meaning that the overall size of the first particles is smaller than the overall size of the second particles. The first particles can be arranged in a first zone, and the second particles can be arranged in a second zone, so that the lighting device exhibits different light and dark effects at different viewing angles.

[0010] In one possible implementation, the first size of the first particles is between 1 mm and 3 mm, and the second size of the first particles is between 1 mm and 4 mm. By ensuring that the first and second sizes of the first particles are within the aforementioned size ranges, the difference between the first and second sizes can be minimized, allowing the first particles to have a granular overall shape. When multiple such granular shapes are reflected in different directions by corresponding first reflective surfaces, a person observing the lighting device from different locations can receive light reflected from different crystal particles, thereby allowing the person to perceive changes in light brightness and light intensity, and to feel that the light emitted by the lighting device shines like stars, dazzling and brilliant.

[0011] In one possible implementation, the first size of the second particles is between 15 mm and 20 mm, and the second size of the second particles is between 30 mm and 40 mm. By ensuring that the first and second sizes of the second particles are within these size ranges, the difference between the first and second sizes can be minimized, allowing the overall shape of the second particles to appear granular. Furthermore, the overall size of the second particles is larger than that of the first particles, resulting in a different reflective effect from the second particles than from the first particles. This facilitates achieving different visual effects of brightness and darkness when viewing the lighting device from different directions.

[0012] In one possible implementation, the crystal particles are polyhedrons. When the crystal particles are regular polyhedrons, they can be regular polyhedrons, such as cubes or cuboids, and the first reflective surface has a regular shape. When the crystal particles are irregular polyhedrons, the first reflective surface has an irregular shape. Crystal particles with polyhedral shapes can reflect light in different directions.

[0013] In one possible implementation, the crystal particles are arranged on a side of the light scattering component that is away from the light source assembly, and a plurality of optical structures are arranged on a side of the light scattering component that faces the light source assembly, and at least two second reflecting surfaces are arranged on the optical structure, and an angle is formed between two adjacent second reflecting surfaces, and the plurality of optical structures are used for uniform light. In particular, before entering the light scattering component, at least part of the light emitted by the light source assembly can be reflected in the corresponding direction by the second reflecting surface of the optical structure, and the reflected light can be reflected again by the inner surface of the bracket, and this can be repeated to make the light evenly diffused inside the accommodating cavity. Therefore, by using only a small number of light sources such as LEDs, the optical structure can achieve uniform diffusion of light over a large area, which is beneficial to reducing the number of light sources, simplifying the structure of the lighting device, and saving costs.

[0014] In one possible implementation, the optical structure includes a columnar pattern or a leather grain. When the optical structure is a columnar pattern, the optical structure has a certain length. For example, the length can be between 4 mm and 8 mm, and the corresponding width can be between 1 mm and 2 mm. When the optical structure is a leather grain, the leather grain is not a regular structure, which can make the side of the light scattering element facing the light source assembly relatively rough, forming fine lines. Whether the optical structure is a columnar pattern or a leather grain, or a combination of a columnar pattern and leather grain, the effect of uniform light can be achieved.

[0015] In one possible implementation, the light scattering element is integrally formed, wherein the corresponding crystal particles and optical structures can be directly formed during the forming process of the light scattering element, thereby ensuring the reliability of the overall structure of the light scattering element, facilitating production, simplifying the process, and saving costs.

[0016] In one possible implementation, along the light emitting direction of the lighting device, the surface of the light-transmitting cover is provided with an anti-light-transmitting coating, and the anti-light-transmitting coating is provided with a plurality of hollow portions for light beam transmission. Among them, the hollow portion can be an area on the light-transmitting cover that is not covered by the anti-light-transmitting coating. In the specific molding process, the anti-light-transmitting coating can be first applied to the set area of ​​the light-transmitting cover by a process such as spraying, and then the anti-light-transmitting coating can be removed at the set position of the anti-light-transmitting coating by a laser engraving process, so that the area where the anti-light-transmitting coating is removed forms a hollow portion, and the hollow portion can prevent the light-transmitting cover from being covered by the anti-light-transmitting coating, so that light can be transmitted from the hollow portion.

[0017] In a possible implementation, the hollow portion is formed by a laser engraving process, which can improve the precision of removing the anti-light transmission coating and form a hollow portion with a preset pattern.

[0018] In one possible implementation, the anti-light transmission coating is a black coating. For example, the anti-light transmission coating can be made of a black polycarbonate material, which has the property of being opaque. When the light source assembly is not emitting light, the black anti-light transmission coating can make the exterior surface of the lighting device appear pitch black, creating a visual impact and improving recognition.

[0019] In one possible implementation, the side of the bracket facing the light scattering element is white. For example, the bracket can be made of white polycarbonate material, which has countless particles at the microscopic level and can reflect light. When the light emitted by the light source assembly is irradiated on the optical structure, at least part of the light can be reflected onto the bracket. The light reflected by the optical structure can enter the bracket and can be reflected in different directions by the particles in the bracket material, thereby achieving a uniform light effect. Therefore, only a few light sources such as LEDs need to be used, and the light can be evenly diffused over a large area through the cooperation of the optical structure and the bracket, which is conducive to reducing the number of light sources, simplifying the structure of the lighting device, and saving costs.

[0020] In one possible implementation, the light scattering member is connected to the bracket, and a distance is provided between a surface of the light scattering member facing away from the light source assembly and the light-transmitting cover plate. This allows light reflected from crystal particles over a larger area of ​​the light scattering member to be emitted from the same hollow portion of the light-transmitting cover plate, thereby enhancing the visual effect when viewing the lighting device from different angles.

[0021] In one possible implementation, the light source assembly includes a light source and a circuit board, the light source is electrically connected to the circuit board, and the circuit board is connected to the side of the bracket facing away from the light-transmitting cover plate, thereby avoiding the circuit board occupying the space of the accommodating cavity between the bracket and the light-transmitting cover plate, and at the same time, the inner surface of the bracket located in the accommodating cavity can be used for uniform light without causing the light to be blocked by the circuit board.

[0022] In a possible implementation, an opening is provided on the bracket, and the light source is aligned with the opening so that light generated by the light source can be irradiated into the accommodating cavity through the opening.

[0023] In a second aspect, the present application further provides a vehicle comprising the lighting device provided in the first aspect of the present application, wherein the vehicle has similar technical effects as the aforementioned lighting device, and no further details are given here.

[0024] It should be understood that the foregoing general description and the following detailed description are merely illustrative and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0026] FIG1 is a front view of a vehicle provided in an embodiment of the present application;

[0027] FIG2 is a front view of a lighting device provided in an embodiment of the present application;

[0028] FIG3 is a cross-sectional view taken along line AA in FIG2 ;

[0029] FIG4 is a front view of a bracket provided in an embodiment of the present application;

[0030] FIG5 is a front view of a light source assembly provided in an embodiment of the present application;

[0031] FIG6 is a schematic diagram of a light source assembly provided in an embodiment of the present application being installed on a bracket;

[0032] FIG7 is a schematic diagram of a light scattering member provided in an embodiment of the present application being installed on a bracket;

[0033] FIG8 is an enlarged view of point B in FIG7;

[0034] FIG9 is a cross-sectional view of a crystal particle provided in one embodiment of the present application;

[0035] FIG10 is a cross-sectional view of a crystal particle provided in another embodiment of the present application;

[0036] FIG11 is a side view of a light scattering member provided in an embodiment of the present application;

[0037] FIG12 is a schematic diagram of an anti-light transmission coating provided in an embodiment of the present application;

[0038] FIG13 is a schematic diagram of an anti-transmittance coating provided in an embodiment of the present application disposed on a light-transmitting cover plate.

[0039] Figure numerals: 1-bracket; 11-opening; 12-accommodating cavity; 2-transparent cover; 21-anti-transparent coating; 211-hollow portion; 3-light source assembly; 31-light source; 32-circuit board; 4-light scattering element; 41-crystal particles; 411-first reflecting surface; 42-optical structure; 421-second reflecting surface; α-angle; β-angle; 10-illumination device; X-first direction; Y-second direction; Z-light emitting direction; H1-first size; H2-second size; C1-first zone; C2-second zone. DETAILED DESCRIPTION

[0040] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0041] It should be clear that the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0042] The terms used in the embodiments of the present application are for the purpose of describing specific embodiments only and are not intended to limit the present application. The singular forms "a", "an", "the" and "the" used in the embodiments of the present application and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise.

[0043] It should be understood that the term "and / or" as used herein simply describes a relationship between associated objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A alone, A and B together, or B alone. Furthermore, the character " / " in this document generally indicates an "or" relationship between the associated objects.

[0044] In the description of this application, unless otherwise specified or limited, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0045] Car headlights are a vehicle's most iconic components. Existing headlights primarily provide high and low beam illumination, as well as signaling to pedestrians during vehicle operation, such as turning and braking. Their design and visual effects are relatively monotonous. When operating, the headlights appear uniform from different angles, lacking in distinctiveness.

[0046] FIG1 is a front view of a vehicle provided in an embodiment of the present application, and FIG2 is a front view of a lighting device provided in an embodiment of the present application. Referring to FIG1 and FIG2 , an embodiment of the present application provides a lighting device 10. The lighting device 10 can be used in vehicles such as automobiles, ships, and motorcycles, and can also be used in automobile interiors, such as atmosphere lighting. Furthermore, the lighting device 10 can also be used in home decoration, which is not limited in the present embodiment. The present embodiment of the application is described using the lighting device 10 shown in FIG1 as an example of a car headlight.

[0047] Figure 3 is a cross-sectional view taken along line AA in Figure 2. Referring to Figure 3, the lighting device comprises a bracket 1, a light-transmitting cover plate 2, a light source assembly 3, and a light-scattering element 4. The light-transmitting cover plate 2 is light-transmitting, allowing a light beam to radiate from one side of the light-transmitting cover plate 2 to the other. When the lighting device is used in a vehicle such as an automobile, the outer surface of the light-transmitting cover plate 2 is exposed to the exterior of the vehicle, thereby both transmitting light and protecting other components within the lighting device.

[0048] FIG4 is a front view of a bracket 1 provided in an embodiment of the present application. Referring to FIG4 , the bracket 1 is the main framework of the lighting device, used to support the numerous components within the lighting device, ensuring the reliability of the overall structure of the lighting device. Furthermore, the bracket 1 facilitates the overall installation and fixation of the lighting device to the vehicle, ensuring the reliability of the lighting device on the vehicle. The bracket 1 may be bowl-shaped, with a translucent cover plate 2 connected to the bracket 1 so that a receiving cavity 12 is formed between the translucent cover plate 2 and the bracket 1.

[0049] FIG5 is a front view of a light source assembly 3 provided in an embodiment of the present application. Referring to FIG5 , the light source assembly 3 is capable of generating a light beam that can penetrate the light-transmitting cover plate 2, enabling the vehicle to provide external light through the lighting device. In one embodiment, the light source assembly 3 includes a light source 31 and a circuit board 32, with the light source 31 electrically connected to the circuit board 32. The light source 31 may be a light-emitting diode (LED), and there may be multiple such LEDs, forming an LED array. The circuit board 32 may be a printed circuit board (PCB), having a wiring layer provided therein. The wiring layer can be electrically connected to the light source 31 via corresponding ports to provide power to the light source 31. Furthermore, the circuit board 32 may be provided with a plurality of functional modules, such as a microcontroller unit (MCU) and a power module. Some of these functional modules can be connected to the light source 31 via corresponding wiring layers in the circuit board 32 to control the light source 31. For example, the corresponding functional modules can be used to dim some of the LED diodes in the LED array, and the duration of dimming can also be controlled.

[0050] FIG6 is a schematic diagram of a light source assembly 3 provided in an embodiment of the present application being mounted on a bracket 1. Referring to FIG6 , a circuit board 32 can be mounted on the bracket 1. The support provided by the bracket 1 ensures the reliability of the mounting of the circuit board 32. In one embodiment, the circuit board 32 can be mounted on the side of the bracket 1 facing away from the light-transmitting cover plate 2. This prevents the circuit board 32 from occupying the space of the receiving cavity 12 between the bracket 1 and the light-transmitting cover plate 2. At the same time, the inner surface of the bracket 1 within the receiving cavity 12 can be used for light uniformity without causing light to be blocked by the circuit board 32. The bracket 1 can be provided with an opening 11. A light source 31, such as an LED diode, can be aligned with the opening 11 so that light generated by the light source 31 can pass through the opening 11 and irradiate the receiving cavity 12. For example, the light source 31, such as an LED diode, can be embedded in the opening 11. In another embodiment, the circuit board 32 and the light source 31 can also be disposed on the side of the bracket 1 facing the receiving cavity 12. This helps to improve the integration of the lighting device. At the same time, the circuit board 32 and the light source 31 can also be protected by the bracket 1 and the light-transmitting cover plate 2.

[0051] 3 , the light scattering member 4 has the characteristics of transmitting light and scattering light in different directions. The light scattering member 4 is disposed in the accommodating cavity 12, that is, the light source assembly 3 and the light-transmitting cover plate 2 are respectively located on opposite sides of the light scattering member 4. The light beam generated by the light source assembly 3 can first be scattered by the light scattering member 4 and then emitted to the outside through the light-transmitting cover plate 2. In one embodiment, the light scattering member 4 can be connected to the bracket 1. For example, the edge position of the light scattering member 4 can be fixed to the bracket 1 through an ultrasonic welding process. Of course, it can also be fixed to the bracket 1 using screws, rivets, snaps, etc.

[0052] FIG7 is a schematic diagram of a light scattering member 4 provided in an embodiment of the present application being mounted on a bracket 1, and FIG8 is an enlarged view at B in FIG7. Referring to FIG8, a plurality of first regions C1 and a plurality of second regions C2 are provided on the light scattering member 4. The first region C1 and the second region C2 are regions having a certain area on the light scattering member 4, at least part of the first region C1 and at least part of the second region C2 are alternately distributed, and a single or multiple crystal particles 41 are provided in the first region C1 and the second region C2. The crystal particles 41 are a particle structure having a relatively small overall volume and relatively close dimensions in all directions. For example, the crystal particles 41 can be regular or irregular polyhedrons, such as tetrahedrons, hexahedrons, etc. The crystal particles 41 have multiple first reflective surfaces 411, and the first reflective surfaces 411 have the function of reflecting light, and an angle α is formed between two adjacent first reflective surfaces 411. When the crystal particles 41 are regular polyhedrons, the crystal particles 41 can be regular polyhedrons, such as cubes, cuboids, etc., and the first reflective surfaces 411 are regular shapes. When the crystal particle 41 is an irregular polyhedron, the shape of the first reflective surface 411 is also irregular. In this embodiment, the irregularly shaped crystal particle 41 is used as an example for description. The irregularly shaped crystal particle 41 has different reflection effects on light in different directions.

[0053] As described above, each crystal particle 41 can have multiple first reflective surfaces 411, with a certain angle α between two adjacent first reflective surfaces 411. This allows each first reflective surface 411 to face different directions. When light generated by the light source assembly 3 strikes a first reflective surface 411, the light can be reflected by the first reflective surface 411 in the corresponding direction. For example, in a selected direction, only a portion of the light can be reflected by the corresponding reflective surface in the selected direction, while the remaining light can be reflected by other first reflective surfaces 411 in other corresponding directions. The size of the crystal particles 41 in the first region C1 is smaller than that of the crystal particles 41 in the second region C2. Crystal particles 41 of different sizes have different effects on light reflection. For example, in a selected first direction X, both the larger crystal particles 41 and the smaller crystal particles 41 have a reflective surface facing the selected first direction X. The larger crystal particles 41 reflect a larger light beam, appearing brighter, while the smaller crystal particles 41 reflect a smaller light beam, appearing relatively darker, thereby achieving a visual effect of varying brightness and darkness. Furthermore, by way of example, in another selected second direction Y, the second direction Y may have only a small angle with the first direction X. In this case, when observing the lighting device in the second direction Y, only the smaller crystal particles 41 may have a reflective surface oriented in the selected second direction Y, while the larger crystal particles 41 may not have a corresponding reflective surface oriented in the selected second direction Y. In this case, only the light reflected by the crystal particles 41 in the second region C2 can be observed. As a result, the lighting effect of the lighting device observed in the second direction Y changes compared to the lighting device observed in the first direction X. Furthermore, alternating at least a portion of the first region C1 and at least a portion of the second region C2 can make the lighting effect more pronounced when the lighting device is observed in different directions.

[0054] Therefore, the lighting device provided in the embodiment of the present application, by setting the first area C1 and the second area C2 at different positions on the light scattering element 4, and setting crystal particles 41 of different sizes in the first area C1 and the second area C2, can present different reflection effects through the reflection of light by the crystal particles 41 in different areas, thereby achieving visual effects of different brightness and darkness when observing the lighting device from different viewing angles.

[0055] In one embodiment, along the light emitting direction Z of the lighting device, the crystal particles 41 are arranged on one side of the light scattering member 4. In a specific embodiment, the crystal particles 41 are arranged on the side of the light scattering member 4 facing the transparent cover plate 2, and the light generated by the light source assembly 3 can be incident on the inside of the light scattering member 4 from the side of the light scattering member 4 facing the light source assembly 3, and then can be emitted from the first reflection surface 411 of the crystal particles 41 to the transparent cover plate 2. The orientations of the various first reflection surfaces 411 of the crystal particles 41 are different, so that the light emitted by the light scattering member 4 can be directed in different directions, and finally can be emitted to the outside of the lighting device through the transparent cover plate 2, so that people can feel different light and dark effects when observing the lighting device from different orientations.

[0056] In one embodiment, FIG9 is a cross-sectional view of a crystal particle 41 provided in one embodiment of the present application, and FIG10 is a cross-sectional view of a crystal particle 41 provided in another embodiment of the present application. Referring to FIG9 or FIG10 , the crystal particle 41 has a first dimension H1 in a first direction X and a second dimension H2 in a second direction Y. The first direction X is perpendicular to the second direction Y, and the second dimension H2 is greater than or equal to the first dimension H1. The crystal particle 41 includes a first particle and a second particle, wherein the first dimension H1 of the second particle is greater than the second dimension H2 of the first particle. The maximum dimension of the first particle is smaller than the minimum dimension of the second particle, i.e., the overall dimension of the first particle is smaller than the overall dimension of the second particle. The first particle can be arranged in a first region C1, and the second particle can be arranged in a second region C2, so that the lighting device has different light and dark effects at different viewing angles. In addition, in some other embodiments, only the first particles or the second particles may be provided in the first region C1 and the second region C2, or some of the first particles and the second particles may be mixed and provided in the first region C1 and / or the second region C2. By making the distribution sparseness of the crystal particles 41 in the first region C1 and the crystal particles 41 in the second region C2 different, different light and dark effects can also be achieved. For example, by making the distribution of the crystal particles 41 in the first region C1 relatively denser and the distribution of the crystal particles 41 in the second region C2 relatively more dispersed, when observing the first region C1 and the second region C2 in a selected direction, the light reflected by the first region C1 appears brighter, while the light reflected by the second region C2 appears dimmer.

[0057] In one embodiment, referring to FIG9 , FIG9 exemplarily illustrates a crystal particle 41 as a first particle, wherein a first size H1 of the first particle is between 1 mm and 3 mm, and a second size H2 of the first particle is between 1 mm and 4 mm. By ensuring that the first size H1 and the second size H2 of the first particle are within the aforementioned size ranges, the difference between the first size H1 and the second size H2 can be minimized, and the overall shape of the first particle can be granular. When multiple such particles are reflected in different directions by corresponding first reflective surfaces 411, a person observing the lighting device from different locations can receive light reflected from different crystal particles 41, thereby allowing the person to perceive changes in light brightness and the light emitted by the lighting device to shine like stars, dazzling and brilliant.

[0058] In one embodiment, referring to FIG. 10 , FIG. 10 exemplarily illustrates crystal particles 41 as second particles, wherein the first dimension H1 of the second particles is between 15 mm and 20 mm, and the second dimension H2 of the second particles is between 30 mm and 40 mm. By ensuring that the first dimension H1 and the second dimension H2 of the second particles are within the aforementioned size ranges, the difference between the first dimension H1 and the second dimension H2 can be minimized, and the overall shape of the second particles can be granular. Furthermore, the overall size of the second particles is larger than that of the first particles, resulting in a different reflective effect from the second particles than from the first particles, facilitating different visual effects of light and dark when viewing the lighting device from different directions.

[0059] In one embodiment, FIG11 is a side view of a light scattering member 4 provided in an embodiment of the present application. Referring to FIG11 , crystal particles 41 are arranged on a side of the light scattering member 4 facing away from the light source assembly 3. A plurality of optical structures 42 for uniform light are arranged on a side of the light scattering member 4 facing the light source assembly 3. The optical structure 42 is provided with at least two second reflective surfaces 421, and an angle β is formed between two adjacent second reflective surfaces 421. Before entering the light scattering member 4, at least part of the light emitted by the light source assembly 3 can be reflected in the corresponding direction by the second reflective surface 421 of the optical structure 42. The reflected light can be reflected again by the inner surface of the bracket 1. This can be repeated to make the light uniformly diffused inside the accommodating cavity 12. Thus, by using only a small number of light sources 31 such as LEDs, the optical structure 42 can achieve uniform diffusion of light over a large area, thereby reducing the number of light sources 31, simplifying the structure of the lighting device, and saving costs. Among them, the light reflected by the optical structure 42 can eventually enter the light scattering member 4 and pass through the crystal particles 41 and the transparent cover plate 2 to irradiate the outside of the lighting device.

[0060] In one embodiment, the optical structure 42 may include a columnar pattern or a leather grain. When the optical structure 42 is a columnar pattern, the optical structure 42 has a certain length. For example, the length may be between 4 mm and 8 mm, and the corresponding width may be between 1 mm and 2 mm. When the optical structure 42 is a leather grain, the leather grain is irregular, which can make the side of the light scattering element 4 facing the light source assembly 3 relatively rough, forming fine lines. Whether the optical structure 42 is a columnar pattern or a leather grain, or a combination of a columnar pattern and leather grain, uniform light can be achieved.

[0061] In one embodiment, the light scattering element 4 is an integrally formed structure. For example, the light scattering element 4 can be integrally injection molded. During the molding process, the corresponding crystal particles 41 and the optical structure 42 can be directly formed into the light scattering element 4, thereby ensuring the reliability of the overall structure of the light scattering element 4, while facilitating manufacturing, simplifying the process, and saving costs.

[0062] In one embodiment, the side of the bracket 1 facing the light scattering member 4 is white. For example, the bracket 1 can be made of white polycarbonate material, which has countless particles at the microscopic level and can reflect light. When the light emitted by the light source component 3 is irradiated on the optical structure 42, at least part of the light can be reflected onto the bracket 1. The light reflected by the optical structure 42 can enter the bracket 1 and can be reflected in different directions by the particles in the bracket 1 material, thereby achieving a uniform light effect. Therefore, only a few light sources 31 such as LEDs need to be used, and the light can be evenly diffused over a large area through the cooperation of the optical structure 42 and the bracket 1, which is conducive to reducing the number of light sources 31, simplifying the structure of the lighting device, and saving costs.

[0063] In one embodiment, Figure 12 is a schematic diagram of the anti-light transmission coating 21 provided in an embodiment of the present application, and Figure 13 is a schematic diagram of the anti-light transmission coating 21 provided in an embodiment of the present application provided on the light-transmitting cover plate 2. Referring to Figures 12 and 13 simultaneously, along the light-emitting direction Z of the lighting device, the surface of the light-transmitting cover plate 2 is provided with an anti-light transmission coating 21, and the anti-light transmission coating 21 is provided with a plurality of hollow portions 211 for light beam transmission. In one embodiment, the anti-light transmission coating 21 is provided on a side of the light-transmitting cover plate 2 away from the light source assembly 3. Referring to Figure 12, the hollow portion 211 can be an area on the light-transmitting cover plate 2 that is not covered by the anti-light transmission coating 21. Exemplarily, the hollow portion 211 can be formed by a laser engraving process. During the specific molding process, the anti-light-transmitting coating 21 can be first coated on the set area of ​​the light-transmitting cover 2 by spraying or other processes, and then the anti-light-transmitting coating 21 can be removed at the set position of the anti-light-transmitting coating 21 by laser engraving, so that the area where the anti-light-transmitting coating 21 is removed forms a hollow portion 211. The hollow portion 211 can prevent the light-transmitting cover 2 from being covered by the anti-light-transmitting coating 21, and can allow light to be transmitted through the hollow portion 211.

[0064] Among them, the hollow portion 211 can be formed into a preset pattern, such as an array distribution or discrete distribution of points, a wavy line shape, a closed or semi-closed ring shape, a regular or irregular pattern, etc. The light generated by the light source assembly 3 can pass through the light scattering member 4 and then be incident on the transparent cover plate 2. The transparent cover plate 2 has a light-transmitting property, and the light can pass through the transparent cover plate 2 to emit to the outside. In the area with the anti-transmittance coating 21, the light is blocked by the anti-transmittance coating 21 and cannot be emitted. In the area with the hollow portion 211, the light can be emitted to the outside through the hollow portion 211. Since the hollow portion 211 has a preset pattern, the light emitted from the hollow portion 211 can visually present a corresponding pattern, which is beautiful and recognizable. In addition, since the light emitted by the light source assembly 3 will be scattered in different directions by the crystal particles 41 on the light scattering member 4, when the lighting device is observed from different angles, the light passing through the hollow portion 211 also has different light and dark effects, making the lighting device more enjoyable.

[0065] In some other embodiments, the anti-light-transmitting coating 21 may also be provided on the side of the light-transmitting cover plate 2 facing the light source assembly 3 , which can also produce the above-mentioned effect brought by the anti-light-transmitting coating 21 , which will not be described in detail in this embodiment.

[0066] In one embodiment, the anti-light transmission coating 21 can be made of a black coating. For example, the anti-light transmission coating 21 can be made of a black polycarbonate material, which has the property of being opaque. When the light source assembly 3 is not emitting light, the black anti-light transmission coating 21 can make the surface of the lighting device appear pitch black, which has a visual impact and improves recognition.

[0067] In one embodiment, a side of the light scattering member 4 facing away from the light source assembly 3 can have a distance from the transparent cover plate 2, so that the light reflected by the crystal particles 41 on a larger area of ​​the light scattering member 4 can be emitted from the hollow portion 211 at the same point on the transparent cover plate 2, thereby enhancing the visual effect when observing the lighting device from different angles.

[0068] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A lighting device, characterized in that: include: Bracket; A light-transmitting cover plate, the light-transmitting cover plate is connected to the bracket, so that a receiving cavity is formed between the light-transmitting cover plate and the bracket; A light source assembly, mounted on the bracket, for irradiating a light beam into the accommodating cavity; A light scattering member is arranged in the accommodating cavity, and a plurality of first areas and a plurality of second areas are arranged on the light scattering member, at least part of the first areas and at least part of the second areas are alternately distributed, a single or multiple crystal particles are arranged in the first areas and the second areas, and the size of the crystal particles in the first areas is smaller than the size of the crystal particles in the second areas; the crystal particles have a plurality of first reflection surfaces, and an angle is formed between two adjacent first reflection surfaces.

2. The lighting device according to claim 1, characterized in that: Along the light emitting direction of the lighting device, the crystal particles are arranged on one side of the light scattering element.

3. The lighting device according to claim 1 or 2, characterized in that: The crystal grain has a first size in a first direction and a second size in a second direction, the first direction is perpendicular to the second direction, and the second size is greater than or equal to the first size; The crystal particles include first particles and second particles, and the first size of the second particles is larger than the second size of the first particles.

4. The lighting device according to claim 3, characterized in that: The first size of the first particles is between 1 mm and 3 mm, and the second size of the first particles is between 1 mm and 4 mm.

5. The lighting device according to claim 3 or 4, characterized in that: The first size of the second particles is between 15 mm and 20 mm, and the second size of the second particles is between 30 mm and 40 mm.

6. The lighting device according to any one of claims 1 to 5, characterized in that: The crystal particles are polyhedrons.

7. The lighting device according to any one of claims 1 to 6, characterized in that: The crystal particles are arranged on a side of the light scattering component facing away from the light source component, and a plurality of optical structures are arranged on a side of the light scattering component facing the light source component. At least two second reflecting surfaces are arranged on the optical structure, and an angle is formed between two adjacent second reflecting surfaces. The plurality of optical structures are used for uniform light.

8. The lighting device according to claim 7, characterized in that: The optical structure includes columnar patterns or leather grains.

9. The lighting device according to any one of claims 1 to 8, characterized in that: The light scattering element is integrally formed.

10. The lighting device according to any one of claims 1 to 9, characterized in that: Along the light emitting direction of the lighting device, the surface of the light-transmitting cover plate is provided with an anti-light-transmitting coating, and the anti-light-transmitting coating is provided with a plurality of hollow parts for light beam transmission.

11. The lighting device according to claim 10, characterized in that: The hollow portion is formed by laser engraving technology.

12. The lighting device according to any one of claims 1 to 11, characterized in that: The anti-light transmission coating is a black coating.

13. The lighting device according to any one of claims 1 to 12, characterized in that: A surface of the bracket facing the light scattering element is white.

14. The lighting device according to any one of claims 1 to 13, characterized in that: The light scattering member is connected to the bracket, and a distance is provided between a surface of the light scattering member that is away from the light source assembly and the light-transmitting cover plate.

15. The lighting device according to any one of claims 1 to 14, characterized in that: The light source assembly comprises a light source and a circuit board. The light source is electrically connected to the circuit board. The circuit board is connected to a side of the bracket away from the light-transmitting cover plate.

16. The lighting device according to claim 15, characterized in that: The bracket is provided with an opening, and the light source is aligned with the opening.

17. A means of transport, characterized in that: A lighting device comprising any one of claims 1-16.

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