Lighting device and vehicle

Abstract

A light device and a vehicle. The light device comprises a light guide structure and a first light distribution element. The light guide structure comprises a first light exit surface for emitting light rays; the first light distribution element comprises a first light entrance surface and a light exit portion oppositely arranged along a first direction; the first light entrance surface is used for receiving the light rays emitted by the first light exit surface; the light exit portion comprises a surface structure formed by a plurality of facets, adjacent facets in the surface structure have an included angle and are in non-planar transition; the first light distribution element further comprises a first surface and a second surface oppositely arranged along a second direction, the first surface and the second surface are provided with a reflective layer, and the reflective layer is arranged close to the first light entrance surface; the light device further comprises a semi-transparent and semi-reflective layer arranged on the first light exit surface or the first light entrance surface. The embodiments of the present application can be applied to intelligent vehicles or new energy vehicles, and the light device can present a crystal-like brilliant effect.

Description

Technical Field

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

[0002] With the development of vehicle technology, in order to meet the requirements of vehicle lights to meet the functions of illumination / indication (such as turning and braking), vehicle manufacturers and users are paying more and more attention to the aesthetics and uniqueness of vehicle light designs, resulting in a greater diversity of vehicle light designs on the market.

[0003] The lighting effect of car headlights is an important aspect of evaluating their aesthetics. Currently, the design of car headlights often prioritizes meeting regulatory requirements and ensuring uniform light emission, resulting in a monotonous lighting effect that fails to reflect brand characteristics and individual needs. In some cases, the aesthetics of the headlights may even deteriorate after being illuminated. Utility Model Content

[0004] This application provides a lighting device and a vehicle, the lighting device being able to produce a crystal-like dazzling effect; moreover, the effect is more pronounced when the light is emitted.

[0005] In a first aspect, a lighting device is provided. The lighting device includes a light guide structure and a first light distribution element (140). The light guide structure includes a first light emitting surface for emitting light. The first light distribution element (140) includes a first light-incident surface (141) and a light-emitting portion (142) disposed opposite each other along a first direction; the first light-incident surface (141) is used to receive light emitted from the first light-incident surface; the light-emitting portion (142) includes a surface structure composed of multiple facets continuously joined together, wherein adjacent facets in the surface structure have an included angle and a non-planar transition. The first light distribution element (140) also includes a first surface (143) and a second surface (144) disposed opposite each other along a second direction, wherein a reflective layer is disposed on the first surface (143) and the second surface (144), the reflective layer being disposed close to the first light-incident surface (141). The lighting device also includes a semi-transparent, semi-reflective layer disposed on the first light-incident surface or the first light-emitting surface (141).

[0006] In this application, because the first light-emitting part has a surface structure composed of multiple facets continuously spliced ​​together, the lighting device can present a crystal-like dazzling effect; moreover, this effect is more pronounced when it emits light.

[0007] Furthermore, because the first light-emitting surface or the first light-receiving surface is provided with a semi-transparent and semi-reflective layer, and the first surface and the second surface are provided with reflective layers, in a non-emitting scenario, after external light enters the first light-distributing element from the light-emitting part, on the one hand, some light can be emitted again from the light-emitting part, thereby increasing the brightness of the first light-distributing element; on the other hand, although some light can be incident on the components located behind the first light-distributing element in the lighting device, after propagating in the components located behind the first light-distributing element, due to the presence of the semi-transparent and semi-reflective layer, only a portion of this light can pass through the first light-distributing element and be emitted to the outside of the lighting device. By setting the semi-transparent and semi-reflective layer and the reflective layer, it is difficult for the observer to perceive the components located behind the first light-distributing element in the lighting device, thereby improving the perceived quality of the lighting device.

[0008] In some implementations, the surface structure may include a first surface structure formed by continuously splicing facets with an angle of less than or equal to 60 degrees between the normal direction and the first vertical plane, wherein the first vertical plane is a vertical plane in a second direction; in the second direction, the ratio of the length of the first surface structure to the length of the first light distribution element (140) is greater than or equal to 1 / 3.

[0009] In this application, by setting the ratio of the length of the first surface structure to the length of the first light distribution element to be more than 1 / 3 in the second direction, other traffic participants can effectively identify the visual signals generated when the lighting device emits light.

[0010] In some implementations, the included angle between adjacent facets in the first surface structure is greater than or equal to 150 degrees.

[0011] For lighting devices, the included angle between adjacent facets directly affects the continuity of light emission. In this application, by setting the included angle between adjacent facets in the first surface structure to be greater than 150 degrees, the continuity of light emission of the lighting device at the first surface structure can be guaranteed.

[0012] In some implementations, the light guide structure may include a first light guide element (120) and a second light distribution element (160). The first light guide element (120) may be used to guide the light emitted by the light-emitting element to the second light-incident surface of the second light distribution element (160); the second light distribution element (160) may be disposed close to the first light distribution element (140), and the first light-emitting surface may belong to the second light distribution element (160).

[0013] In this application, by setting a second light distribution element in the light guide structure, the lighting device can adjust the distribution of light (e.g., light intensity distribution, divergence, uniformity, etc.) to the desired range using the second light distribution element before the light enters the first light distribution element.

[0014] In some implementations, the light guide structure may include a reflector (180) and a second light distribution element (160). The reflector (180) may be used to reflect the light emitted by the light-emitting element to the second light-incident surface of the second light distribution element (160); the second light distribution element (160) may be disposed close to the first light distribution element (140), and the first light-emitting surface may belong to the second light distribution element (160).

[0015] In this application, the light is guided to the second light distribution element by a reflector, which can reduce the size of the light guide structure and is beneficial to the lightweighting and miniaturization of the lighting device.

[0016] In some implementations, the reflector (180) may include a concave structure, the inner surface of which may be provided with a reflective layer, and the opening of which may be disposed toward the second light-incident surface (161); the light-emitting element may be disposed between the concave structure and the second light-incident surface.

[0017] In some implementations, the half-value angle of the second light distribution element (160) can be greater than 3 degrees and less than or equal to 5 degrees.

[0018] In this application, by setting a smaller half-value angle for the second light distribution element, the light can have better uniformity before it enters the first light distribution element, which enables the lighting device to have a better lighting effect and helps to improve the quality of the lighting device.

[0019] In some implementations, the second light distribution element (160) can be milky white.

[0020] In this application, by setting the second light distribution element to milky white, it is beneficial to reduce the perceptibility of the second light distribution element in non-light-emitting scenarios.

[0021] In some implementations, the lighting device may also include a light-emitting element; a light guide structure may be used to guide the light emitted by the light-emitting element to the first light-emitting surface for emission.

[0022] In some implementations, the first light-incident surface (141) and the first light-exit surface can be set relative to each other.

[0023] In a second aspect, a vehicle is provided that may include the lighting device described in the first aspect and any possible implementation thereof. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a lighting device provided in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram showing the relative positional relationships of some components in the lighting device 100 provided in this application embodiment;

[0026] Figure 3 This is a schematic diagram of the appearance of the light distribution element 140 provided in the embodiments of this application;

[0027] Figure 4 This is a schematic diagram illustrating one configuration of the semi-transparent and semi-reflective layer in the lighting device 100 provided in this application embodiment;

[0028] Figure 5 This is a schematic diagram illustrating another configuration of the semi-transparent and semi-reflective layer in the lighting device 100 provided in this application embodiment;

[0029] Figure 6 This is another structural schematic diagram of the lighting device provided in the embodiments of this application;

[0030] Figure 7 This is a schematic diagram illustrating the operation of the light distribution element 160 provided in an embodiment of this application;

[0031] Figure 8 This is a schematic diagram of one arrangement of the semi-transparent and semi-reflective layer in the lighting device 200 provided in this application embodiment;

[0032] Figure 9 This is another structural schematic diagram of the lighting device provided in the embodiments of this application;

[0033] Figure 10 This is a schematic diagram showing the relative positional relationships of some components in the lighting device 300 provided in this application embodiment;

[0034] Figure 11 This is a schematic diagram of the arrangement of the semi-transparent and semi-reflective layer in the lighting device 300 provided in the embodiments of this application;

[0035] Figure 12 These are exploded views of some components in the lighting device 200 provided in the embodiments of this application;

[0036] Figure 13 This is a schematic diagram of the appearance of the lighting device provided in the embodiment of this application;

[0037] Figure 14 This is a schematic diagram of the structure of the light distribution element 140 provided in the embodiments of this application. Detailed Implementation

[0038] The technical solutions in this application will now be described with reference to the accompanying drawings.

[0039] The following detailed description and accompanying drawings of the embodiments are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0040] Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and other forms such as the third-person singular "comprises" and the present participle "comprising" are interpreted as open and inclusive, meaning "including, but not limited to." In the description, terms such as "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific example," or "some examples" are intended to indicate that a particular feature, structure, material, or characteristic associated with that embodiment or example is included in at least one embodiment or example of this application. The illustrative representations of the foregoing terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be included in any suitable manner in any of the embodiments or examples.

[0041] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this application, unless otherwise stated, "multiple" means two or more.

[0042] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structures in the embodiments of this application. It should also be noted in the description of the embodiments of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In this application, the term "embodiment" is used to mean that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application can be combined with other embodiments.

[0044] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0045] In addition, the use of “based on” implies openness and inclusivity, because a process, step, calculation or other action “based on” one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0046] The terms “about,” “approximately,” or “approximately” used in the embodiments of this application include the stated value and the average value within an acceptable deviation range of a particular value, wherein the acceptable deviation range is determined by a person skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the particular quantity, i.e., the limitations of the measurement system.

[0047] As mentioned above, with the development of vehicle technology, increasingly higher demands are being placed on the uniqueness and aesthetics of vehicle lights. Among these, the lighting effect of vehicle lights is an important aspect of evaluating their aesthetics. However, in the development of some vehicle lights, the design of the structure and lighting effect may be guided primarily by meeting regulatory requirements and ensuring uniform light emission. In such cases, the aesthetics of the vehicle lights may not be improved after being illuminated compared to when they are not illuminated, and may even deteriorate after being illuminated.

[0048] Therefore, embodiments of this application provide a lighting device that makes the lighting effect of vehicle lights more unique and beautiful, thereby enhancing the uniqueness and aesthetics of vehicle lights.

[0049] This application provides a lighting device that may include a light guide structure and a first light distribution element.

[0050] The light guide structure may include a first light-emitting surface, which can be used to emit light. The light guide structure can be used to guide the light emitted by a light-emitting element (such as a lamp bead or a light strip) to the first light-emitting surface for emission. More specifically, the light guide structure can receive the light emitted by the light-emitting element and can change the direction of light propagation through one or more methods such as refraction, reflection, and scattering, thereby guiding the light to the first light-emitting surface for emission.

[0051] For example, a light guide structure may include optical elements with light-guiding functions, such as thick-walled components or light guides; through these components, the light emitted by the light-emitting element can be guided to a specific position. As another example, in some implementations, the light guide structure may employ a reflector to guide the light emitted by the light-emitting element to a specific position. Furthermore, in some implementations, the light guide structure may also include components with light-distribution functions.

[0052] The first light-distributing element may include a first light-incident surface and a light-emitting portion disposed opposite to each other along a first direction. The first light-incident surface can be used to receive light rays emitted from the first light-emitting surface. More specifically, the first light-incident surface can be disposed in the optical path of the light rays emitted from the first light-emitting surface; correspondingly, the light rays emitted from the first light-emitting surface can enter the first light-distributing element through the light-incident surface. For example, the first light-incident surface and the first light-emitting surface can be disposed opposite to each other. The first light-incident surface and the first light-emitting surface can be parallel or have a certain angle between them.

[0053] The light-emitting portion of the first light-distributing element may include a surface structure composed of multiple facets joined together, wherein adjacent facets in the surface structure may have an included angle and transition in a non-planar manner. For example, similar to objects such as diamonds and crystals, the light-emitting portion of the first light-distributing element may have a surface structure composed of multiple facets joined together; light rays propagating in the first light-distributing element along different paths may exit the light-distributing element from different facets of the light-emitting portion.

[0054] The first light distribution element may further include a first surface and a second surface disposed opposite to each other along a second direction; the first surface and the second surface may be provided with a reflective layer, which may be disposed close to the incident light surface.

[0055] The reflective layer can be used to reflect light. For example, light incident on the first surface from inside the first light distribution element will be reflected back into the light distribution element and continue to propagate inside it under the action of the reflective layer. Similarly, light incident on the first surface from the outside will be reflected back to the outside of the light distribution element and continue to propagate outside it under the action of the reflective layer.

[0056] In one design approach, a reflective layer can be provided on all areas of both the first and second surfaces. In another design approach, a reflective layer can be provided only on a portion of the surface near the first light-incident surface.

[0057] The lighting device may also include a semi-transparent and semi-reflective layer disposed on the first light-emitting surface or the first light-incident surface.

[0058] The first direction and the second direction mentioned above are different directions. These two directions can have a certain angle between them, or even be perpendicular. For example, the first direction can be the thickness direction of the lighting device / first light distribution element, and the second direction can be the height direction of the lighting device / first light distribution element.

[0059] It should be noted that in this application, "light-incident surface" and "light-exiting surface / part" are described in terms of the propagation process of light emitted by the light-emitting elements (such as LED beads, LED strips, etc.) of a lighting device. That is, in the optical path of the light emitted by the light-emitting elements in the lighting device, these rays will enter the corresponding part through the "light-incident surface" and exit from that part through the "light-exiting surface / part". Light emitted from other light sources (such as the sun, other lighting devices) may enter a part through the surface corresponding to the "light-exiting surface / part" or may exit from that part through the surface corresponding to the "light-incident surface". For example, light emitted by natural light sources such as the sun can enter through the surface corresponding to the light-exiting part of the first light-distributing element, and under the action of the reflective layer and the semi-transparent layer, can exit through the surface corresponding to the light-exiting part of the first light-distributing element.

[0060] The following combination Figures 1 to 5 Taking the lighting device 100 as an example, the first light distribution element, the first light-incident surface, the light-emitting part, and the light guide structure will be described by way of example.

[0061] For example, Figure 1 This is a schematic diagram of a lighting device provided in an embodiment of this application. Figure 1 It can be understood as a cross-section of the lighting device 100 at a certain position in the y direction.

[0062] Reference Figure 1 The lighting device 100 may include a light-emitting element 101, a light-guiding element 120, and a light-distributing element 140. The light-emitting element 101 may include one or more LEDs. The light-guiding element 120 can be used to guide light along a preset path to its light-emitting surface; the light-guiding element 120 may be an optical element with a light-guiding effect, such as a thick-walled component or a light guide strip. The light-distributing element 140 can be used to control the distribution, direction, and intensity of the light.

[0063] Reference Figure 1 and Figure 2 For the light guide element 120, its light-incident surface can be arranged toward the light-emitting element 101; its light-emitting surface 121 can be arranged on the side of the light guide element 120, more specifically, it can be arranged on the side where the light distribution element 140 is located and arranged toward the light distribution element 140.

[0064] The light distribution element 140 may include an incident light surface 141 and an emitting light portion 142; the incident light surface 141 and the emitting light portion 142 may be arranged opposite to each other along the x-direction. For the light distribution element 140, this component may be arranged in the optical path of the light emitted from the emitting light surface 121, and its incident light surface 141 may face the emitting light surface 121; more specifically, the incident light surface 141 of the light distribution element 140 may be arranged opposite to the emitting light surface 121 of the light guide element 120.

[0065] The light-incident surface 141 can be a plane, a curved surface, or it can be composed of multiple surfaces joined together. The light-emitting section 142 can have a surface structure composed of multiple facets joined together continuously. In the light-emitting section 142, adjacent facets can have a certain angle between them; adjacent facets can be joined together by sharing edges, using curved surface bridging, or other non-planar transition methods. The facets in the light-emitting section 142 can have regular or irregular shapes.

[0066] For example, the light-emitting portion 142 can be a polygonal facet; the number of sides of different facets can be the same or different. For example, as Figure 3 As shown, facets 1421 and 1422 are adjacent facets in the light-emitting section 142; facet 1421 can be pentagonal, and facet 1422 can be heptagonal. For example, as... Figure 3 As shown, the other facets in the light-emitting section 142 can be triangular, quadrilateral, hexagonal, or other shapes.

[0067] The light distribution element 140 may further include surfaces 143 and 144 disposed opposite to each other along the z-direction; surfaces 143 and 144 may be planar, curved, or composed of multiple surfaces joined together. Reflective layers may be provided on surfaces 143 and 144 in the light distribution element 140. Light incident on the reflective layer from the interior of the light distribution element 140 will be reflected back into the light distribution element and continue to propagate within it; light incident on the reflective layer from the exterior of the light distribution element 140 will be reflected back outside the light distribution element.

[0068] In some embodiments, the reflective layer can be a metal reflective layer; for example, an aluminum film or a silver film.

[0069] Reference Figure 1 and Figure 2In the lighting device 100, light emitted from the light-emitting element 101 can enter the light guide element 120 from the bottom; after being guided by the light guide element 120, the light can exit from the light-emitting surface 121; since the light-emitting surface 121 is arranged facing the light distribution element 140, the light guide element 120 can guide the light emitted from the light-emitting element 101 to the light distribution element 140 in this way. Furthermore, the light emitted from the light-emitting surface 121 can enter the light distribution element 140 from the light-incident surface 141; the light entering the light distribution element 140 can exit from the light-emitting section 142.

[0070] for Figure 1 In the light device shown, the light distribution element 140 can correspond to the first light distribution element, and its light incident surface 141 can correspond to the first light incident surface; correspondingly, the light guide structure of the light device only includes the light guide element 120, and the light emitting surface 121 can correspond to the first light emitting surface; the x direction can correspond to the first direction, and the z direction can correspond to the second direction.

[0071] In one example, in Figures 1 to 3 In this context, the x-direction can be the thickness direction of the lighting fixture, the y-direction can be the length direction of the lighting fixture, and the z-direction can be the height direction of the lighting fixture. Correspondingly, as... Figures 1 to 3 As shown, in the light distribution element 140, surface 143 can be located at the top end of the light distribution element, surface 144 can be located at the bottom end of the light distribution element, light incident surface 141 can be located at the rear end of the light distribution element, and light emitting part 142 can be located at the front end of the light distribution element.

[0072] In yet another example, in Figures 1 to 3 In this context, the z-direction can be vertical, while the x-direction and y-direction can be two different horizontal directions; correspondingly, the plane formed by the x-direction and y-direction (denoted as the xoy plane) is a horizontal plane.

[0073] The above combination Figures 1 to 3 The relative positional relationships between the components of the lighting device 100 are illustrated by way of example. The following description, in conjunction with... Figure 4 and Figure 5 The following is an example of how the semi-transparent and semi-reflective layer is set in the lighting device 100.

[0074] In some implementations, a semi-transparent, semi-reflective layer can be disposed on the light-incident surface 141 in the lighting device 100. The following is in conjunction with... Figure 4 As an example, Figure 4 Image (a) shows the relative positions of the reflective layer and the semi-transparent, semi-reflective layer. Figure 4 (b) and (c) in the figure show the propagation path of light in different scenarios.

[0075] Reference Figure 4In (a), the light-incident surface 141 is provided with a semi-transparent and semi-reflective layer; the areas of surfaces 143 and 144 near the light-incident surface 141 are provided with reflective layers.

[0076] When the lighting device 100 is not emitting light, external light (such as light emitted from natural light sources like the sun or light reflected / scattered by other objects) can enter the light distribution element 140 through the light emitting section 142; under the action of the reflective layer and the semi-transparent and semi-reflective layer, a portion of this light can be emitted through the light emitting section 142, such as... Figure 4 As shown in (b) of the diagram.

[0077] When the lighting device 100 emits light, a portion of the light emitted from the light-emitting surface 121 of the light guide element 120 can pass through the semi-transparent and semi-reflective film on the light-incident surface 141 and enter the light distribution element 140; then, under the action of the reflective layers on surfaces 143 and 144, the light can be emitted from the light-emitting part 142, such as... Figure 4 As shown in (c) in the figure.

[0078] In this embodiment, because surface 141 is provided with a semi-transparent and semi-reflective layer, in a non-emitting scenario, only a portion of the external light rays incident on the light distribution element 140 from the light emitting part 142 will pass through surface 141 and enter the component located behind the light distribution element 140 in the lighting device. Moreover, even if these rays propagate behind the light distribution element 140 and return to surface 141, only a portion will be able to re-enter the light distribution element 140 from surface 141 due to the semi-transparent and semi-reflective layer. In this way, it is difficult for the observer to perceive the structure located behind the light distribution element 140 in the lighting device, thereby enhancing the perceived quality of the lighting device.

[0079] In some implementations, a semi-transparent, semi-reflective layer can be placed on the light-emitting surface 121 in the lighting device 100. The following is in conjunction with... Figure 5 As an example, Figure 5 Image (a) shows the relative positions of the reflective layer and the semi-transparent, semi-reflective layer. Figure 5 (b) and (c) in the figure show the propagation path of light in different scenarios.

[0080] Reference Figure 5 (a) in the middle, and Figure 4 Similarly, the reflective layers on surfaces 143 and 144 can be positioned close to the incident surface 141; and Figure 4 The difference is that the light-emitting surface 121 is provided with a semi-transparent and semi-reflective layer, while the light-receiving surface 141 is not provided with a semi-transparent and semi-reflective layer.

[0081] Reference Figure 5 (b) in the middle, and Figure 4Similar to (b) in the above, when the lighting device 100 is not emitting light, external light can be incident on the light distribution element through the light emitting part 142; a portion of this light will be emitted from the light emitting part 142 under the action of the reflective layer and the semi-transparent and semi-reflective layer.

[0082] Reference Figure 5 In (c), when the lighting device 100 emits light, the light in the light guide element 120 can be emitted through the semi-transparent and semi-reflective layer on the emission surface 121 and incident on the light distribution element 140 through the light incident surface 141; under the action of the reflective layer, these light rays will be emitted from the light emission part 142.

[0083] In this embodiment, since a semi-transparent and semi-reflective layer is provided on the surface 121 opposite to the light-incident surface 141 in the lighting device 100, in a non-emitting scenario, after external light passes through the light distribution element 140, only a portion will pass through the surface 121 and enter the component located behind the light distribution element 140 in the lighting device. Moreover, even if this light propagates through the light guide structure or other components located behind the light distribution element 140 and returns to the surface 121, only a portion will be able to exit from the surface 121 and pass through the light distribution element 140 again due to the effect of the semi-transparent and semi-reflective layer. In this way, it is difficult for the observer to perceive the structure located behind the light distribution element 140 in the lighting device, thereby improving the perceived quality of the lighting device.

[0084] The above combination Figure 4 and Figure 5 The method of setting a semi-transparent and semi-reflective layer is illustrated by way of example. As for the lighting device 100, since the light-emitting part 142 has a surface structure composed of multiple facets continuously spliced ​​together, the lighting device can present a crystal-like brilliant effect; moreover, this effect is more pronounced when the lighting device 100 emits light.

[0085] The above combination Figures 1 to 5 The structure of the lighting device 100 is described by way of example. Figures 1 to 5 In one embodiment, the light guide structure of the lighting device includes only one component (i.e., light guide element 120). In other embodiments, the light guide structure of the lighting device may include multiple components.

[0086] For example, in one implementation, the light guide structure may include a first light guide element and a second light distribution element. The first light guide element can be used to guide the light emitted by the light-emitting element to the light-incident surface of the second light distribution element; the second light distribution element can be disposed close to the first light distribution element, and the first light-emitting surface can be the light-emitting surface of the second light distribution element.

[0087] For example, in another implementation, the light guide structure may include a reflector and a second light distribution element. The reflector can be used to reflect the light emitted by the light-emitting element to the second light-incident surface of the second light distribution element; the second light distribution element can be disposed close to the first light distribution element, and the first light-emitting surface can belong to the second light distribution element.

[0088] The following combination Figures 6 to 11 Taking lighting devices 200 and 300 as examples, these two implementation methods are illustrated. It should be noted that the embodiments of this application do not limit the number of components included in the light guide structure of the lighting device; in other implementation methods, the light guide structure may include more components, which will not be illustrated in detail here.

[0089] The following combination Figures 6 to 8 The structure of the lighting device 200 is described by way of example.

[0090] For example, Figure 6 This is another structural schematic diagram of the lighting device provided in the embodiments of this application. Figure 6 It can be understood as a cross-section of the lighting device 200 at a certain position in the y direction.

[0091] Reference Figure 6 Similar to the lighting device 100, the lighting device 200 may include a light guide element 120 and a light distribution element 140; however, unlike the lighting device 100, the light guide structure in this lighting device also includes a light distribution element 160.

[0092] Reference Figure 6 In the lighting device 200, the light guide element 120, the light distribution element 160, and the light distribution element 140 can be arranged sequentially along the x-direction; in the x-direction, the light distribution element 160 can be disposed between the light guide element 120 and the light distribution element 140. The light distribution element 160 may include a light incident surface 161 disposed opposite to the light emitting surface 121, and a light emitting surface 162 disposed opposite to the light incident surface 141.

[0093] Accordingly, the light emitted from the light-emitting surface 121 will enter the light distribution element 160 through the light-incident surface 161, and then exit the light distribution element 160 through the light-emitting surface 162; after passing through the light distribution element 160, the light can enter the light distribution element 140 through the light-incident surface 141, and then exit from the light-emitting section 142.

[0094] exist Figure 6In the lighting device shown, the light distribution element 140 can correspond to the first light distribution element, and its light incident surface 141 can correspond to the first light incident surface; correspondingly, the light guiding structure of the lighting device can include a light guide element 120 and a light distribution element 160, the light guide element 120 can correspond to the first light guide element, the light distribution element 160 can correspond to the second light distribution element, and the light emitting surface 162 of the light distribution element 160 can correspond to the first light emitting surface; the x direction can correspond to the first direction, and the z direction can correspond to the second direction.

[0095] Compared to the lighting device 100, the lighting device 200 adds a light distribution element 160 between the light guide element 120 and the light distribution element 140. This allows the lighting device 200 to adjust the light distribution before it enters the light distribution element 140 through the light distribution element 160. For example, by changing the design / process parameters of the light distribution element 160, parameters such as the degree of light divergence and light intensity variation can be adjusted to the desired range.

[0096] In some embodiments, the half-value angle of the light distribution element 160 may be greater than or equal to 3 degrees and less than or equal to 5 degrees.

[0097] The half-value angle describes the degree of light divergence and represents the angle between the direction where the luminous intensity is half of the axial intensity and the luminous axis. A larger half-value angle means fewer reflections of light in the light-distributing element, resulting in more uneven light emission; a smaller half-value angle means more reflections of light in the light-distributing element, resulting in more uniform light emission.

[0098] For example, refer to Figure 7 In the light guide element 120, a stepped structure can be provided, which can be positioned opposite to the light emitting surface 121 along the x-direction. This stepped structure can be used to guide the propagation direction of light to the x-direction. Light guided by different stepped surfaces in the stepped structure will be emitted from different positions on the light emitting surface 121, which will result in poor uniformity of the light emitted from the light emitting surface 121. By setting a small half-value angle for the light distribution element 160, the light can have better uniformity before it enters the light distribution element 140, so that the lighting device 200 can have a better lighting effect.

[0099] In some embodiments, the light-distributing element 160 can be milky white. For example, white microparticles can be uniformly disposed within the light-distributing element 160 to give it an overall milky white appearance. These particles can alter the propagation path of light, resulting in better uniformity of light after passing through the light-distributing element 160. Moreover, since the light-distributing element 160 is milky white, it helps to reduce its perceptibility in non-emitting scenarios.

[0100] In some implementations, a semi-transparent, semi-reflective layer can be disposed on the light-incident surface 141 of the light-distributing element 140 in the lighting device 200. Correspondingly, in non-emitting scenarios, the propagation path of external light can be... Figure 4 Similar to (b) in the above; in luminous scenarios, the propagation path of light can be similar to... Figure 4 Similar to (c) in the text.

[0101] In some implementations, a translucent layer can be disposed on the light distribution element 160 in the lighting device 200. More specifically, the translucent layer can be disposed on the surface 162 of the light distribution element 160, which is opposite to the light incident surface 141. The following is in conjunction with... Figure 8 As an example, Figure 8 Image (a) shows the relative positions of the reflective layer and the semi-transparent, semi-reflective layer. Figure 8 (b) and (c) in the figure show the propagation path of light in different scenarios.

[0102] Reference Figure 8 In (a), the light-emitting surface 162 of the light-distributing element 160 is provided with a semi-transparent and semi-reflective layer; correspondingly, surfaces 121, 161, and 141 do not need to be provided with a semi-transparent and semi-reflective film. Furthermore, with... Figure 4 and Figure 5 Similarly, in the light distribution element 140, a reflective layer may be provided on the areas of surfaces 143 and 144 near the light incident surface 141.

[0103] When the lighting device 200 is not emitting light, external light can enter the light distribution element 140 through the light-emitting part 142; under the action of the reflective layer and the semi-transparent and semi-reflective layer, a portion of this light can be emitted from the light-emitting part 142, such as... Figure 8 As shown in (b) of the diagram.

[0104] When the lighting device 200 emits light, the light emitted from the light-emitting surface 121 of the light guide element 120 enters the light distribution element 160 through the surface 161; a portion of the light passes through the semi-transparent and semi-reflective film on the surface 162 and exits the light distribution element 160, then enters the light distribution element 140 through the incident surface 141 and exits from the light-emitting part 142, such as... Figure 8 As shown in (c) in the figure.

[0105] As for the lighting device 200, since the light-emitting part 142 has a surface structure composed of multiple facets continuously spliced ​​together, the observer will feel a crystal-like brilliance when observing the lighting device; moreover, this effect is more pronounced when the lighting device 100 emits light.

[0106] The above combination Figures 6 to 8 The structure of the lighting device 200 is illustrated by way of example.

[0107] In the above embodiments, both lighting devices 100 and 200 use a light guide element 120 to guide the light emitted by the light-emitting element 101 to a specific position; the difference between lighting devices 100 and 200 is whether the light emitted from the light guide element 120 passes through the light distribution element 160.

[0108] In other embodiments, light can be guided to a specific location in other ways; for example, light emitted by the light-emitting element 101 can be guided to a specific location by reflection. The following is in conjunction with... Figures 9 to 11 Taking the lighting device 300 as an example, this will be illustrated by way of example.

[0109] For example, Figure 9 This is another structural schematic diagram of the lighting device provided in the embodiments of this application. Figure 9 It can be understood as a cross-section of the lighting device 300 at a certain position in the y direction.

[0110] Reference Figure 9 Similar to lighting devices 100 and 200, lighting device 300 may include a light distribution element 140. Unlike lighting devices 100 and 200, the light guiding structure in lighting device 300 includes a reflector 180 (also referred to as a reflector bowl, reflector plate, or reflector tile) and a light distribution element 160. The reflector 180 can be used to guide light from the light-emitting element 101 to the light-incident surface 161 of the light distribution element 160.

[0111] For example, refer to Figure 9 and Figure 10 The reflector 180 may have a concave structure, and a reflective layer may be provided on the inner surface of the concave structure; through the reflective layer, the reflector 180 can guide light to the opening of the concave structure. The opening of the concave structure may be oriented toward the light distribution element 140; the light-emitting element 101 may be disposed between the reflector 180 and the light distribution element 160, more specifically, the light-emitting element 101 may be disposed in the cavity formed by the concave structure.

[0112] In this case, even if light can be emitted from the light-emitting element 101 from multiple directions, under the action of the reflector 180, these light rays will be guided to the light-incident surface 161 of the light-distributing element 160, thereby improving the utilization rate of light.

[0113] exist Figure 9In the lighting device shown, the light distribution element 140 can correspond to the first light distribution element, and its light incident surface 141 can correspond to the first light incident surface; correspondingly, the light guide structure of the lighting device can include a reflector 180 and a light distribution element 160, the light distribution element 160 can correspond to the second light distribution element, and the light emitting surface 162 of the light distribution element 160 can correspond to the first light emitting surface; the x direction can correspond to the first direction, and the z direction can correspond to the second direction.

[0114] In some implementations, in the lighting device 300, a semi-transparent and semi-reflective layer can be disposed on the light-incident surface 141 of the light-distributing element 140, such as... Figure 11 As shown in (a) above. Accordingly, in a non-emitting scenario, the propagation path of external light can be compared with... Figure 4 Similar to (b) in the text.

[0115] In some implementations, in the lighting device 300, a semi-transparent and semi-reflective layer can be disposed on the light distribution element 160; more specifically, it can be disposed on the surface 162 of the light distribution element 160 opposite to the light incident surface 141, such as... Figure 11 As shown in (b) above. Accordingly, in a non-emitting scenario, the propagation path of external light can be... Figure 8 Similar to (b) in the text.

[0116] Compared to the lighting device 200, the lighting device 300 uses a reflector to guide light to the light-incident surface of the light distribution element 160, which can reduce the arrangement space required for the light guide structure and is conducive to the miniaturization and lightweight design of the lighting device.

[0117] The above combination Figures 9 to 11 The structure of the lighting device 300 has been illustrated by way of example. The above description of the lighting devices (100, 200, 300) only covers the light-emitting element, light guide structure, and light distribution element 140. In addition to these components, the lighting device may also include a lamp housing, lamp shade, and other components, as well as fixing / supporting structures for each component.

[0118] For example, refer to Figures 1 to 11 The lighting device (100, 200, 300) may include a lamp housing 111 and a lamp shade 112; the lamp housing 111 and the lamp shade 112 may be enclosed to form an accommodating space; the light-emitting element, light guide structure and light distribution element in the lighting device may be arranged in the accommodating space.

[0119] For example, refer to Figure 1The lampshade 112 can be fixedly connected to the lamp housing 111 via the support structure 113; the light source 101 can be fixed to the bottom of the light guide element 120 via the support structure 114; the light guide element 120 can be fixed via the support structures 115 and 116, and the light distribution element 140 can be fixed via the support structures 115 and 117. One or more of the above-mentioned support structures 113 to 117 can be coupled to the lamp housing, or they can be independent parts.

[0120] For example, refer to Figure 12 In the lighting device 200, the light guide element 120, the light distribution element 160, and the support structures 114 and 116 can be assembled along the dotted line to form component 106; further, the light distribution element 140, the support structures 115 and 117 can be assembled with component 106 along the dotted line to form component 107; then, component 107 can be placed in the cavity formed by lamp housing 111 and lamp shade 112.

[0121] For the lighting devices (100, 200, 300) provided in the embodiments of this application, when not emitting light, external light can enter the first light distribution element from the light-emitting part; then, under the action of the reflective layer and the semi-transparent and semi-reflective layer, the light can exit from the first light distribution element through the light-emitting part. When emitting light, the light emitted by the light-emitting element, after passing through the light guide structure and the first light distribution element, will exit from the first light distribution element through the light-emitting part. Since the light-emitting part of the first light distribution element has a surface structure similar to crystal / diamond, the lighting device can present a brilliant effect similar to crystal / diamond.

[0122] For example, under natural light, the appearance of the lighting device when it is not emitting light can be as follows: Figure 13 As shown in (a); the appearance of the lighting device when it is emitting light can be as follows: Figure 13 As shown in (b) of the diagram.

[0123] For example, the lighting device provided in this application embodiment can be installed in a vehicle. For instance, the lighting device can serve as a turn signal, brake light, daytime running light, or other signal light for a vehicle.

[0124] As a vehicle signal light, this lighting device can convey the vehicle's status or the driver's intentions to the outside world through the visual signals generated by emitting light, allowing other road users to anticipate the vehicle's movement. If the visibility of this visual signal is poor, it may endanger driving safety; for this lighting device, the structure of the light-emitting part of the first light-distributing element will directly affect the propagation effect of the visual signal.

[0125] In some implementations, the surface structure of the light-emitting part, which is formed by continuously splicing multiple facets, may include a first surface structure formed by continuously splicing facets with an angle of less than or equal to 60 degrees between the normal direction and the first vertical plane, wherein the first vertical plane is a vertical plane in the second direction; in the second direction, the ratio of the length of the first surface structure to the length of the first light-distributing element may be greater than or equal to 1 / 3.

[0126] The following combination Figure 14 The surface structure of the light-emitting part 142 will be described by way of example. Figure 14 This can be understood as the cross-section of the light distribution element 140 at a certain position in the y direction.

[0127] Reference Figure 14 Facet 1423 is a facet of the light-emitting part 142, and facet 1424 is a facet adjacent to facet 1423. Figure 14 In the diagram, angle A can be a schematic representation of the angle between adjacent facets (it should be noted that, given...) Figure 14 The structure of the light-distributing element 140 is explained using a cross-sectional view. Angle A does not actually refer to the angle between adjacent facets under this cross-section, but rather to the spatial angle formed by adjacent facets; angle B can represent the angle between the normal direction of the facet and the xoy plane; distance C can represent the length of the light-distributing element 140 in the z-direction (for example, when the z-direction is the height direction of the light-distributing element, distance C can represent its height). Figure 14 In this context, the x-direction can correspond to the first direction, and the z-direction can correspond to the second direction; the xoy plane, which is perpendicular to the z-direction, can correspond to the first perpendicular plane.

[0128] Assume the z-direction is vertical, the x and y-directions are horizontal, and the xoy plane is horizontal.

[0129] In the light-emitting section 142, the normal direction of the facets affects the direction of light emission. Specifically, when the angle between the normal direction of the facet and the horizontal direction (i.e., angle B) decreases, the light emitted from that facet is more easily perceived by an observer in the horizontal direction. If the proportion of facets with smaller angle B in the light-emitting section 142 is higher, the light emitted by the device is more easily and effectively identified by other road users.

[0130] For example, the angle between the normal direction of the facets within the distance D in the light-emitting section 142 and the xoy plane is less than or equal to 60 degrees; in some implementations, the ratio between the distance D and the distance C can be greater than or equal to a certain threshold (e.g., 1 / 3).

[0131] In this example, the surface structure within a distance D in the light-emitting section 142 can correspond to the first surface structure; the distance D can correspond to the length of the first surface structure in the second direction.

[0132] In the light-emitting section 142, the included angle between adjacent facets directly affects the light emission continuity of the lighting device; the closer the included angle between adjacent facets is to 180 degrees, the more similar the surface structure of the light-emitting section 142 is to a continuous curved surface, and the better the light emission continuity.

[0133] For example, within a distance D in the light-emitting section 142, the included angle between adjacent facets can be greater than or equal to 150 degrees to ensure the continuity of light emission from the lighting device.

[0134] The above combination Figures 1 to 14 This application describes the lighting device provided in the embodiments of this application.

[0135] This application also provides a vehicle. The vehicle may include any of the above-described possible lighting devices.

[0136] The term "vehicle" in this application embodiment is used in a broad sense, and can refer to transportation vehicles (such as commercial vehicles, passenger cars, motorcycles, flying cars, trains, etc.), industrial vehicles (such as forklifts, trailers, tractors, etc.), engineering vehicles (such as excavators, bulldozers, cranes, etc.), agricultural equipment (such as lawnmowers, harvesters, etc.), amusement equipment, toy vehicles, etc. This application embodiment does not specifically limit the type of vehicle. For example, the vehicles in this application may include pure electric vehicles (pure EV / battery EV), hybrid electric vehicles (HEV), range-extended electric vehicles (REEV), plug-in hybrid electric vehicles (PHEV), or new energy vehicles (NEV), etc.

[0137] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0138] In the several embodiments provided in this application, it should be understood that the disclosed systems and devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of the light guide structure is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple components or parts may be combined or integrated into another system, or some features may be ignored.

[0139] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A lighting device, characterized in that, The lighting device includes a light guide structure and a first light distribution element (140); The light guide structure includes a first light-emitting surface, which is used to emit light rays; The first light distribution element (140) includes a first light-incident surface (141) and a light-emitting part (142) disposed opposite to each other along a first direction. The first light-incident surface (141) is used to receive light emitted from the first light-emitting surface. The light-emitting part (142) includes a surface structure composed of multiple facets continuously spliced ​​together. Adjacent facets in the surface structure have an included angle and a non-planar transition. The first light distribution element (140) further includes a first surface (143) and a second surface (144) disposed opposite to each other along a second direction. The first surface (143) and the second surface (144) are provided with reflective layers, which are disposed close to the first light incident surface (141). The lighting device also includes a semi-transparent and semi-reflective layer disposed on the first light-emitting surface or the first light-incident surface.

2. The lighting device according to claim 1, characterized in that, The surface structure includes a first surface structure formed by continuously splicing facets with an angle of less than or equal to 60 degrees between the normal direction and the first perpendicular plane, wherein the first perpendicular plane is the perpendicular plane of the second direction. In the second direction, the ratio of the length of the first surface structure to the length of the first light distribution element (140) is greater than or equal to 1 / 3.

3. The lighting device according to claim 2, characterized in that, In the first surface structure, the included angle between adjacent facets is greater than or equal to 150 degrees.

4. The lighting device according to claim 1, characterized in that, The light guide structure includes a first light guide element (120) and a second light distribution element (160). The first light guide element (120) is used to guide the light emitted by the light-emitting element to the second light-incident surface (161) of the second light distribution element (160). The second light distribution element (160) is disposed close to the first light distribution element (140), and the first light-emitting surface belongs to the second light distribution element (160).

5. The lighting device according to claim 1, characterized in that, The light guide structure includes a reflector (180) and a second light distribution element (160). The reflector (180) is used to reflect the light emitted by the light-emitting element to the second light-incident surface (161) of the second light distribution element (160). The second light distribution element (160) is disposed close to the first light distribution element (140), and the first light-emitting surface belongs to the second light distribution element (160).

6. The lighting device according to claim 5, characterized in that, The reflector includes a concave structure, the inner surface of which is provided with a reflective layer, and the opening of the concave structure is oriented toward the second light-incident surface (161). The light-emitting element is disposed between the concave structure and the second light-incident surface (161).

7. The lighting device according to claim 4 or 5, characterized in that, The half-value angle of the second light distribution element (160) is greater than 3 degrees and less than or equal to 5 degrees.

8. The lighting device according to claim 7, characterized in that, The second light distribution element (160) is milky white.

9. The lighting device according to any one of claims 1 to 6, characterized in that, The lighting device also includes a light-emitting element, and the light guide structure is used to guide the light emitted by the light-emitting element to the first light-emitting surface for emission.

10. The lighting device according to any one of claims 1 to 6, characterized in that, The first light-incident surface and the first light-exit surface are arranged opposite to each other.

11. A vehicle, characterized in that, The vehicle includes a lighting device as described in any one of claims 1 to 10.

Images