Lighting device and vehicle

Abstract

The invention discloses a lighting device and a vehicle, and the lighting device comprises a support, a light-transmitting cover plate, a light source assembly and a light scattering part. The light-transmitting cover plate is connected to the support, so that a containing cavity is formed between the light-transmitting cover plate and the support. The light source assembly is installed on the support. The light scattering part is arranged in the containing cavity, a plurality of first areas and a plurality of second areas are arranged on the light scattering part, at least part of the first areas and at least part of the second areas are alternately distributed, and one or more crystal particles used for reflecting light in different directions are arranged in the first areas and the second areas. A size of the crystal particles in the first region is smaller than a size of the crystal particles in the second region. According to the invention, the first region and the second region are arranged at different positions on the light scattering part, and the crystal particles with different sizes are arranged in the first region and the second region, so that different reflection effects can be presented through the reflection effects of the crystal particles in different regions on light rays; the visual effect of different brightness can be achieved when the lighting device is observed at different visual angles.

Description

Technical Field

[0001] This application relates to the field of lighting technology, and particularly to a lighting device and a vehicle. Background Art

[0002] Automobile headlights are the most iconic components of a vehicle. Existing headlights focus on high and low beam lighting and signal transmission to surrounding pedestrians and vehicles during vehicle operation. The visual effects of headlight design and lighting are relatively single. When the headlights are in the working state, the visual effects at different angles are relatively consistent, lacking distinctiveness. Summary of the Invention

[0003] In view of this, this application provides a lighting device and a vehicle to solve the problem that the visual effects of existing automobile headlights are relatively consistent in different directions and lack distinctiveness.

[0004] In a first aspect, an embodiment of this 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 as to form a receiving cavity between the light-transmitting cover plate and the bracket. The light source assembly is installed on the bracket and is used to irradiate a light beam into the receiving cavity. The light scattering member is disposed in the receiving cavity. A plurality of first regions and a plurality of second regions are provided on the light scattering member, at least part of the first regions and at least part of the second regions are alternately distributed, single or multiple crystal particles are provided in the first regions and the second regions, and the size of the crystal particles in the first regions is smaller than the size of the crystal particles in the second regions. The crystal particles have a plurality of first reflection surfaces, and an included angle is formed between two adjacent first reflection surfaces.

[0005] For the lighting device provided by the embodiment of this application, by providing the first regions and the second regions at different positions on the light scattering member, and providing crystal particles with different sizes in the first regions and the second regions, different reflection effects can be presented through the reflection of the crystal particles on the light in different regions, realizing different bright and dark visual effects when observing the lighting device from different perspectives.

[0006] In a possible implementation manner, along the light-emitting direction of the lighting device, the crystal particles are disposed on one side of the light scattering member. In a specific embodiment, the crystal particles are disposed on the side of the light scattering member facing the light-transmitting cover plate. The light generated by the light source assembly can enter the light scattering member from the side of the light scattering member facing the light source assembly, and then can exit from the first reflection surfaces of the crystal particles to the light-transmitting cover plate. The orientations of the respective first reflection surfaces of the crystal particles are different, so that the light exiting from the light scattering member can be directed in various different directions, and finally can exit to the outside of the lighting device through the light-transmitting cover plate, making the bright and dark effects felt by people when observing the lighting device from different positions different.

[0007] In a possible implementation, the crystal particles have a first dimension in a first direction and a second dimension in a second direction, the first direction being perpendicular to the second direction, and the second dimension being greater than or equal to the first dimension. The crystal particles include a first particle and a second particle, and the first dimension of the second particle is greater than the second dimension of the first particle. Among them, the maximum dimension of the first particle is smaller than the minimum dimension of the second particle, that is, 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, and the second particle can be arranged in a second region, so that the lighting device has different light and dark effects at different viewing angles.

[0008] In a possible implementation, the first dimension of the first particle ranges from 1 mm to 3 mm, and the second dimension of the first particle ranges from 1 mm to 4 mm. By making the first dimension and the second dimension of the first particle fall within the above dimension range, the difference between the first dimension and the second dimension can be made smaller, and the overall shape of the first particle can be presented as a granular shape. When multiple such granular particles are reflected in various directions by the corresponding first reflecting surface, when a person moves between different positions to observe the lighting device, the person can receive the light reflected by different crystal particles, so that the person can feel the change of light and dark, and feel that the light emitted by the lighting device shines like stars, shining brightly.

[0009] In a possible implementation, the first dimension of the second particle ranges from 15 mm to 20 mm, and the second dimension of the second particle ranges from 30 mm to 40 mm. By making the first dimension and the second dimension of the second particle fall within the above dimension range, the difference between the first dimension and the second dimension can be made smaller, and the overall shape of the second particle can be presented as a granular shape, and the overall dimension of the second particle is greater than the overall dimension of the first particle, so that the reflection effect of the second particle is different from that of the first particle, which is beneficial to achieving different light and dark visual effects when observing the lighting device in different directions.

[0010] In a possible implementation, the crystal particles are polyhedrons. Among them, when the crystal particles are regular polyhedrons, the crystal particles can be regular polyhedrons, such as cubes, cuboids, etc., and the first reflecting surface is a regular shape. When the crystal particles are irregular polyhedrons, the shape of the first reflecting surface is an irregular shape. The crystal particles in the shape of polyhedrons can all achieve reflecting light in different directions.

[0011] In a possible implementation, the crystal particles are disposed on a surface of the light scattering member facing away from the light source assembly. A plurality of optical structures are disposed on a surface of the light scattering member facing the light source assembly. At least two second reflecting surfaces are disposed on the optical structures, and an included angle is formed between two adjacent second reflecting surfaces. The plurality of optical structures are used for light homogenization. Among them, before at least part of the light emitted by the light source assembly enters the light scattering member, it can be first reflected by the second reflecting surface of the optical structure to a corresponding direction, and the reflected light can be reflected again by the inner surface of the bracket. Repeating this process can make the light uniformly diffuse inside the accommodation cavity. Thus, 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.

[0012] In a possible implementation, the optical structure includes columnar patterns or leather grains. Among them, when the optical structure is columnar patterns, the optical structure has a certain length. Exemplarily, 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 leather grains, this kind of leather grains is not a regular structure, which can make the surface of the light scattering member facing the light source assembly relatively rough, forming fine patterns. Whether the optical structure is columnar patterns or leather grains, or a combination of columnar patterns and leather grains, can achieve the effect of light homogenization.

[0013] In a possible implementation, the light scattering member is integrally formed. During the forming process of the light scattering member, the corresponding crystal particles and optical structures can be directly formed, which can ensure the reliability of the overall structure of the light scattering member, facilitate production and manufacturing, simplify the process, and save costs.

[0014] In a possible implementation, along the light-emitting direction of the lighting device, an anti-transmission coating is disposed on the surface of the light-transmitting cover plate, and a plurality of hollow portions for beam transmission are disposed on the anti-transmission coating. Among them, the hollow portion can be an area on the light-transmitting cover plate not covered by the anti-transmission coating. In the specific forming process, the anti-transmission coating can be first coated on a set area of the light-transmitting cover plate through processes such as spraying, and then the anti-transmission coating can be removed at a set position of the anti-transmission coating through a laser engraving process, so that the area where the anti-transmission coating is removed forms a hollow portion. This hollow portion can make the light-transmitting cover plate not covered by the anti-transmission coating, and enable light to be transmitted through the hollow portion.

[0015] In a possible implementation, the hollow portion is formed by a laser engraving process. Through the laser engraving process, the accuracy of removing the anti-transmission coating can be improved, and a hollow portion with a preset pattern can be formed.

[0016] In a possible implementation, the anti-light-transmitting coating is a black coating. For example, the anti-light-transmitting coating may be a coating made of a black polycarbonate material, which has a light-proof property. When the light source assembly does not emit light, the black anti-light-transmitting coating can make the appearance of the lighting device appear pitch black, which has a visual impact and improves recognition.

[0017] In a possible implementation, the side of the bracket facing the light scattering element is white. Exemplarily, 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 onto the optical structure, at least part of the light can be reflected onto the bracket, and 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 small number of light sources such as LEDs are needed, 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.

[0018] In a possible implementation, the light scattering member is connected to the bracket, and a distance is provided between a side of the light scattering member facing away from the light source assembly and the light-transmitting cover plate, thereby enabling light reflected by crystal particles on a larger area of ​​the light scattering member to be emitted from the hollow portion at the same point on the light-transmitting cover plate, thereby enhancing the visual effect when observing the lighting device from different angles.

[0019] 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 a side of the bracket that is away from the light-transmitting cover plate, thereby preventing the circuit board from occupying the space of the accommodating cavity between the bracket and the light-transmitting cover plate, and at the same time allowing the inner surface of the bracket located in the accommodating cavity to be used for uniform light without causing the light to be blocked by the circuit board.

[0020] In a possible implementation, an opening is provided on the bracket, and the light source is aligned with the opening so that the light generated by the light source can be irradiated into the accommodating cavity through the opening.

[0021] 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, which will not be described in detail here.

[0022] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0024] Figure 1 Front view of the vehicle provided by the embodiment of the present application;

[0025] Figure 2 Front view of the lighting device provided by the embodiment of the present application;

[0026] Figure 3 For Figure 2 Cross-sectional view at A-A in

[0027] Figure 4 Front view of the bracket provided by the embodiment of the present application;

[0028] Figure 5 Front view of the light source assembly provided by the embodiment of the present application;

[0029] Figure 6 Schematic diagram of the light source assembly provided by the embodiment of the present application mounted on the bracket;

[0030] Figure 7 Schematic diagram of the light scattering member provided by the embodiment of the present application mounted on the bracket;

[0031] Figure 8 For Figure 7 Enlarged view at B in

[0032] Figure 9 Cross-sectional view of the crystal grains provided by one embodiment of the present application;

[0033] Figure 10 Cross-sectional view of the crystal grains provided by another embodiment of the present application;

[0034] Figure 11 Side view of the light scattering member provided by the embodiment of the present application;

[0035] Figure 12 Schematic diagram of the anti-translucent coating provided by the embodiment of the present application;

[0036] Figure 13 Schematic diagram of the anti-translucent coating provided by the embodiment of the present application provided on the light-transmitting cover plate.

[0037] Reference numerals:

[0038] 1 - Bracket;

[0039] 11 - Opening;

[0040] 12 - Accommodating cavity;

[0041] 2 - Translucent cover plate;

[0042] 21 - Anti - light - transmission coating;

[0043] 211 - Hollowed - out part;

[0044] 3 - Light source assembly;

[0045] 31 - Light source;

[0046] 32 - Circuit board;

[0047] 4 - Light scattering element;

[0048] 41 - Crystal particles;

[0049] 411 - First reflecting surface;

[0050] 42 - Optical structure;

[0051] 421 - Second reflecting surface;

[0052] α - Angle;

[0053] β - Angle;

[0054] 10 - Lighting device;

[0055] X - First direction;

[0056] Y - Second direction;

[0057] Z - Light output direction;

[0058] H1 - First dimension;

[0059] H2 - Second dimension;

[0060] C1 - First region;

[0061] C2 - Second region. Detailed implementation mode

[0062] For a better understanding of the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0063] It should be clear that the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts belong to the scope of protection of this application.

[0064] 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", "the", and "said" used in the embodiments of the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0065] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0066] In the description of the present application, unless otherwise clearly specified and limited, the terms "first" and "second" are only used for the purpose of description and cannot be understood as indicating or implying relative importance; unless otherwise specified or stated, the term "plural" means two or more; the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0067] Automobile headlights are the most iconic components of a vehicle. Existing headlights focus on high and low beam lighting and signal transmission to surrounding pedestrians and vehicles during vehicle operation, such as turning and braking. The visual effects of headlight design and lighting are relatively single. When the headlights are in the working state, the visual effects at different angles are relatively consistent, lacking distinctiveness.

[0068] Figure 1 This is the front view of the vehicle provided by the embodiment of the present application. Figure 2 This is the front view of the lighting device provided by the embodiment of the present application. Referring to Figure 1 and Figure 2 , the embodiment of the present application provides a lighting device 10. The lighting device 10 can be applied to vehicles such as automobiles, ships, and motorcycles, and can also be applied to automotive interiors, such as ambient lights. In addition, the lighting device 10 can also be applied to home decoration, and the embodiments of the present application do not limit this. The embodiments of the present application take the lighting device 10 shown in Figure 1 as an example of being applied to the headlights of an automobile for illustration.

[0069] Figure 3 This is Figure 2 the sectional view at A-A in Figure 3, the lighting device includes a bracket 1, a light-transmitting cover plate 2, a light source assembly 3, and a light scattering member 4. Among them, the light-transmitting cover plate 2 has the property of transmitting light, enabling the light beam to irradiate from one side of the light-transmitting cover plate 2 to the other side. When the lighting device is applied to vehicles such as cars, the outer surface of the light-transmitting cover plate 2 is exposed to the outside of the car, which can not only achieve light transmission but also protect other components inside the lighting device.

[0070] Figure 4 This is the front view of the bracket 1 provided by the embodiment of the present application. Refer to Figure 4 , the bracket 1 is the main framework of the lighting device, used to support numerous components inside the lighting device, which can ensure the reliability of the overall structure of the lighting device. At the same time, the bracket 1 can facilitate the overall installation and fixation of the lighting device to the car, ensuring the reliability of the installation of the lighting device on the car. Among them, the shape of the bracket 1 can be bowl-shaped, and the light-transmitting cover plate 2 is connected to the bracket 1, so that an accommodation cavity 12 can be formed between the light-transmitting cover plate 2 and the bracket 1.

[0071] Figure 5 This is the front view of the light source assembly 3 provided by the embodiment of the present application. Refer to Figure 5 , the light source assembly 3 can generate a light beam, and the generated light beam can penetrate the light-transmitting cover plate 2, enabling the car to provide light outside through the lighting device. In one embodiment, the light source assembly 3 includes a light source 31 and a circuit board 32, and the light source 31 is electrically connected to the circuit board 32. Among them, the light source 31 can be a light-emitting diode (LED), and there can be multiple such LEDs, which can form an LED array. The circuit board 32 can be a printed circuit board (PCB). There is a wiring layer in the circuit board 32, and the wiring layer can be electrically connected to the light source 31 through corresponding ports to provide electrical energy for the light source 31. At the same time, numerous functional modules can be provided on the circuit board 32. For example, a micro control unit (MCU), a power module, etc. Some of the functional modules can be connected to the light source 31 through the corresponding wiring layers in the circuit board 32 to achieve the control of the light source 31. Exemplarily, the brightness and darkness of some LED diodes in the LED array can be controlled through the corresponding functional modules, and the time of brightness and darkness can also be controlled.

[0072] Among them, Figure 6 This is a schematic diagram of the installation of the light source assembly 3 provided by the embodiment of the present application on the bracket 1. Refer to Figure 6, the circuit board 32 can be installed on the bracket 1, and the reliability of the installation of the circuit board 32 can be guaranteed by the support of the bracket 1. In one embodiment, the circuit board 32 can be installed on the side of the bracket 1 away from the transparent cover plate 2, so that the circuit board 32 can be prevented from occupying the space of the accommodating cavity 12 between the bracket 1 and the transparent cover plate 2, and the inner surface of the bracket 1 located in the accommodating cavity 12 can be used for uniform light, and the light will not be blocked by the circuit board 32. Among them, the bracket 1 can be provided with an opening 11, and a light source 31 such as an LED diode can be aligned with the opening 11, so that the light generated by the light source 31 can be irradiated into the accommodating cavity 12 through the opening 11. Exemplarily, 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 arranged on the side of the bracket 1 facing the accommodating cavity 12, which is conducive to improving the integration of the lighting device, and the circuit board 32 and the light source 31 can also be protected by the bracket 1 and the transparent cover plate 2.

[0073] Reference Figure 3 The light scattering member 4 has the characteristics of transmitting light and scattering light in different directions. The light scattering member 4 is arranged 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 be first scattered by the light scattering member 4, and then irradiated 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 by ultrasonic welding process. Of course, it can also be fixed to the bracket 1 by screws, rivets, buckles and other connecting parts.

[0074] Figure 7 This is a schematic diagram of the light scattering member 4 provided in the embodiment of the present application being installed on the bracket 1. Figure 8 for Figure 7 The enlarged view at B in Figure 2 shows the Figure 8, 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 with 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 single or multiple crystal grains 41 are provided in the first region C1 and the second region C2. The crystal grain 41 has a relatively small overall volume and a particle structure with dimensions relatively close in all directions. Exemplarily, the crystal grain 41 can be a regular or irregular polyhedron, such as a tetrahedron, a hexahedron, etc. The crystal grain 41 has a plurality of first reflecting surfaces 411, and the first reflecting surfaces 411 have the function of reflecting light, and there is an included angle α between two adjacent first reflecting surfaces 411. When the crystal grain 41 is a regular polyhedron, the crystal grain 41 can be a regular polyhedron, such as a cube, a cuboid, etc., and the first reflecting surface 411 is a regular shape. When the crystal grain 41 is an irregular polyhedron, the shape of the first reflecting surface 411 is an irregular shape. In this embodiment, taking the crystal grain 41 as an irregular polyhedron as an example for illustration, the irregularly shaped crystal grain 41 has different light reflection effects in different directions.

[0075] Among them, as described above, there may be multiple first reflecting surfaces 411 on each crystal particle 41, and there is a certain angle α between two adjacent first reflecting surfaces 411, so that each first reflecting surface 411 faces different directions. When the light generated by the light source assembly 3 irradiates on the first reflecting surface 411, the light can be reflected by the first reflecting surface 411 to the corresponding direction. Exemplarily, in a selected direction, only a part of the light can be reflected by the corresponding reflecting surface to the selected direction, while the remaining light can be reflected by other first reflecting surfaces 411 to other corresponding directions. Among them, the size of the crystal particles 41 in the first region C1 is smaller than the size of the crystal particles 41 in the second region C2. Crystal particles 41 with different sizes have different light reflection effects. Exemplarily, in a selected first direction X, both the larger-sized crystal particles 41 and the smaller-sized crystal particles 41 have a reflecting surface facing the selected first direction X. The beam diameter reflected by the larger-sized crystal particles 41 is larger and appears brighter, while the beam diameter reflected by the smaller-sized crystal particles 41 is smaller and appears relatively darker, thereby obtaining a visual effect with different brightness and darkness. In addition, exemparily, in another selected second direction Y, there may be only a small angle between the second direction Y and the first direction X. At this time, when observing the lighting device in the second direction Y, perhaps only the smaller-sized crystal particles 41 have a reflecting surface facing the selected second direction Y, while the larger-sized crystal particles 41 do not have a corresponding reflecting surface facing the selected second direction Y. At this time, only the light reflected by the crystal particles 41 in the second region C2 can be observed. Thus, compared with observing the lighting device in the first direction X, the brightness and darkness effect of observing the lighting device in the second direction Y has changed. In addition, arranging at least part of the first region C1 and at least part of the second region C2 alternately can make the brightness and darkness effect more significant when observing the lighting device in different directions.

[0076] Thus, the lighting device provided by the embodiment of the present application, by setting the first region C1 and the second region C2 at different positions on the light scattering member 4, and arranging crystal particles 41 with different sizes in the first region C1 and the second region C2, can present different reflection effects through the reflection of light by the crystal particles 41 in different regions, achieving a visual effect with different brightness and darkness when observing the lighting device from different perspectives.

[0077] In one embodiment, along the light-emitting direction Z of the lighting device, the crystal particles 41 are disposed on one side of the light-scattering member 4. In a specific embodiment, the crystal particles 41 are disposed on the side of the light-scattering member 4 facing the light-transmitting cover plate 2. The light generated by the light source assembly 3 can enter the interior of the light-scattering member 4 from one side of the light-scattering member 4 facing the light source assembly 3, and then can exit from the first reflecting surface 411 of the crystal particles 41 to the light-transmitting cover plate 2. The orientations of the respective first reflecting surfaces 411 of the crystal particles 41 are different, so that the light emitted from the light-scattering member 4 can be directed in various different directions, and finally can exit to the outside of the lighting device through the light-transmitting cover plate 2, making the light and dark effects felt by a person when observing the lighting device from different orientations different.

[0078] In one embodiment, Figure 9 is a cross-sectional view of the crystal particles 41 provided in one embodiment of the present application, Figure 10 is a cross-sectional view of the crystal particles 41 provided in another embodiment of the present application. Referring to Figure 9 or Figure 10 , the crystal particles 41 have 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 particles 41 include a first particle and a second particle. The first dimension H1 of the second particle is greater than the second dimension H2 of the first particle. Among them, the maximum dimension of the first particle is smaller than the minimum dimension of the second particle, that is, the overall dimension of the first particle is smaller than the overall dimension of the second particle. The first particle can be disposed in the first region C1, and the second particle can be disposed in the 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 particle or the second particle can be disposed in the first region C1 and the second region C2, or, some of the first particles and the second particles can be mixed and disposed in the first region C1 and / or the second region C2. By making the distribution density 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 obtained. Exemplarily, 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, thus, when observing the first region C1 and the second region C2 in a selected direction, the light reflected by the first region C1 is visually felt brighter, while the light reflected by the second region C2 is visually felt dimmer.

[0079] In one embodiment, referring to Figure 9 , Figure 9Exemplarily, the crystal particle 41 is shown as the first particle. The first dimension H1 of the first particle is between 1 mm and 3 mm, and the second dimension H2 of the first particle is between 1 mm and 4 mm. By making the first dimension H1 and the second dimension H2 of the first particle fall within the above dimension range, the difference between the first dimension H1 and the second dimension H2 can be made relatively small, and the overall shape of the first particle can be presented as a granular shape. When multiple such granular particles are reflected in various different directions through the corresponding first reflecting surface 411, when a person moves between different positions to observe the lighting device, the person can receive the light reflected by different crystal particles 41, so that the person can feel the change of light and darkness, and feel that the light emitted by the lighting device shines like a star, shining brightly.

[0080] In one embodiment, referring to Figure 10 , Figure 10 Exemplarily, the crystal particle 41 is shown as the second particle. The first dimension H1 of the second particle is between 15 mm and 20 mm, and the second dimension H2 of the second particle is between 30 mm and 40 mm. By making the first dimension H1 and the second dimension H2 of the second particle fall within the above dimension range, the difference between the first dimension H1 and the second dimension H2 can be made relatively small, and the overall shape of the second particle can be presented as a granular shape, and the overall size of the second particle is larger than the overall size of the first particle, so that the reflection effect of the second particle is different from that of the first particle, which is beneficial to achieving different visual effects of light and darkness when observing the lighting device in different directions.

[0081] In one embodiment, Figure 11 is a side view of the light scattering member 4 provided in the embodiment of the present application. Referring to Figure 11 , the crystal particle 41 is disposed on the surface of the light scattering member 4 facing away from the light source assembly 3. A plurality of optical structures 42 for light homogenization are disposed on the surface of the light scattering member 4 facing the light source assembly 3. At least two second reflecting surfaces 421 are disposed on the optical structure 42, and an included angle β exists between two adjacent second reflecting surfaces 421. Before at least part of the light emitted by the light source assembly 3 enters the light scattering member 4, it can be first reflected by the second reflecting surface 421 of the optical structure 42 to the corresponding direction, and the reflected light can be reflected again by the inner surface of the bracket 1. In this way, the light can be uniformly diffused inside the accommodation cavity 12. Therefore, only a small number of light sources 31 such as LEDs can be used to achieve uniform diffusion of light in a large area through the optical structure 42, which is beneficial to 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 finally enter the light scattering member 4, and irradiate to the outside of the lighting device through the crystal particle 41 and the light-transmitting cover plate 2.

[0082] In one embodiment, the optical structure 42 may include columnar patterns or leather grains. Among them, when the optical structure 42 is columnar patterns, the optical structure 42 has a certain length. Exemplarily, 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 leather grains, such leather grains are not regular structures, which can make the surface of the light scattering member 4 facing the light source assembly 3 relatively rough, forming fine patterns. Whether the optical structure 42 is columnar patterns, leather grains, or a combination of columnar patterns and leather grains, the function of light homogenization can be achieved.

[0083] In one embodiment, the light scattering member 4 is an integrally formed structure. Exemplarily, the light scattering member 4 may be integrally injection molded. During the molding process of the light scattering member 4, the corresponding crystal grains 41 and the optical structure 42 can be directly molded, so as to ensure the reliability of the overall structure of the light scattering member 4, and at the same time facilitate production and manufacturing, simplify the process, and save costs.

[0084] In one embodiment, the surface of the bracket 1 facing the light scattering member 4 is white. Exemplarily, the bracket 1 may be made of white polycarbonate material, which has countless particles microscopically and can reflect light. When the light emitted by the light source assembly 3 irradiates the optical structure 42, at least part of the light can be reflected to the bracket 1, and 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, so as to achieve the effect of light homogenization. Thus, only a small number of light sources 31 such as LEDs are needed, and the cooperation of the optical structure 42 and the bracket 1 can realize the uniform diffusion of light in a large area, which is beneficial to reducing the number of light sources 31, simplifying the structure of the lighting device, and saving costs.

[0085] In one embodiment, Figure 12 is a schematic diagram of the anti-light-transmission coating 21 provided by the embodiment of the present application. Figure 13 is a schematic diagram of the anti-light-transmission coating 21 provided by the embodiment of the present application disposed on the light-transmitting cover plate 2. At the same time, referring to Figure 12 and Figure 13 , along the light-emitting direction Z of the lighting device, an anti-light-transmission coating 21 is provided on the surface of the light-transmitting cover plate 2, and a plurality of hollow portions 211 for beam transmission are provided on the anti-light-transmission coating 21. In one embodiment, the anti-light-transmission coating 21 is disposed on the 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 light-blocking coating 21. Exemplarily, the hollow portion 211 can be formed by a laser engraving process. In the specific forming process, the light-blocking coating 21 can be coated on a set area of the light-transmitting cover plate 2 through processes such as spraying, and then the light-blocking coating 21 can be removed at a set position of the light-blocking coating 21 through the laser engraving process, so that the area where the light-blocking coating 21 is removed forms the hollow portion 211. The hollow portion 211 can make the light-transmitting cover plate 2 not covered by the light-blocking coating 21, and can enable light to be transmitted through the hollow portion 211.

[0086] Among them, the hollow portion 211 can be formed into a preset pattern, such as dot-shaped, wavy line-shaped, closed or semi-closed ring-shaped, regular or irregular graphic, etc. distributed in an array or discretely. The light generated by the light source assembly 3 can be incident on the light-transmitting cover plate 2 after passing through the light scattering member 4. The light-transmitting cover plate 2 has a light-transmitting property, and the light can be emitted to the outside through the light-transmitting cover plate 2. In the area with the light-blocking coating 21, the light is blocked by the light-blocking coating 21 and cannot be emitted, while 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 is scattered to different directions by the crystal particles 41 on the light scattering member 4, when observing the lighting device from different angles, the light transmitted through the hollow portion 211 also has different brightness and darkness effects, making the lighting device more appreciable.

[0087] In some other embodiments, the light-blocking coating 21 can also be provided on the side surface of the light-transmitting cover plate 2 facing the light source assembly 3, and can also produce the above effects brought by the light-blocking coating 21, which will not be elaborated in this embodiment.

[0088] In one embodiment, the material of the light-blocking coating 21 can be a black coating. Exemplarily, the light-blocking coating 21 can be a coating made of black polycarbonate material and has the property of not transmitting light. When the light source assembly 3 does not emit light, the black light-blocking coating 21 can make the appearance surface of the lighting device present a pitch-black effect, which has an impact on vision and improves the recognition.

[0089] In one embodiment, there can be a distance between the side of the light scattering member 4 facing away from the light source assembly 3 and the light-transmitting 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 light-transmitting cover plate 2, thereby enhancing the visual effect when observing the lighting device from different angles.

[0090] The above are only the preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations can be made to the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A lighting device, characterized in that, Comprising: A bracket; A light-transmitting cover plate, which is connected to the bracket, so as to form a receiving cavity between the light-transmitting cover plate and the bracket; A light source assembly, which is installed on the bracket and is used for irradiating a light beam into the receiving cavity; A light scattering member, which is arranged in the receiving cavity. Multiple first regions and multiple second regions are arranged on the light scattering member, at least part of the first regions and at least part of the second regions are alternately distributed, and single or multiple crystal particles are arranged in the first regions and the second regions. The size of the crystal particles in the first regions is smaller than the size of the crystal particles in the second regions; the crystal particles have multiple first reflecting surfaces, and an included angle exists between two adjacent first reflecting 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 member.

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

4. The lighting device according to claim 3, characterized in that, The first dimension of the first particles ranges from 1 mm to 3 mm, and the second dimension of the first particles ranges from 1 mm to 4 mm.

5. The lighting device according to claim 3 or 4, characterized in that, The first dimension of the second particles ranges from 15 mm to 20 mm, and the second dimension of the second particles ranges from 30 mm to 40 mm.

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

7. The lighting device according to any one of claims 1-6, characterized in that, The crystal particles are arranged on the surface of the light scattering member facing away from the light source assembly. Multiple optical structures are arranged on the surface of the light scattering member facing the light source assembly. At least two second reflecting surfaces are arranged on the optical structures, and an included angle exists between two adjacent second reflecting surfaces. The multiple optical structures are used for light homogenization.

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

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

10. The lighting device according to any one of claims 1-9, characterized in that, Along the light-emitting direction of the lighting device, an anti-light-transmitting coating is arranged on the surface of the light-transmitting cover plate, and multiple hollow portions for light beam transmission are arranged on the anti-light-transmitting coating.

11. The lighting device according to claim 10, characterized in that, The hollow portions are formed by a laser engraving process.

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

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

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

15. The lighting device according to any one of claims 1-14, characterized in that, 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.

16. The lighting device according to claim 15, characterized in that, An opening is arranged on the bracket, and the light source is aligned with the opening.

17. A vehicle, characterized in that, Including the lighting device according to any one of claims 1-16.

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