Lamplight device and vehicle

Abstract

The invention discloses a lighting 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-emitting surface, and the first light-emitting surface is used for emitting light. The first light distribution element comprises a first light incident surface and a light emergent part which are oppositely arranged along a first direction; the first light incident surface is used for receiving light emitted from the first light emergent surface; the light emitting part comprises a surface structure formed by continuously splicing a plurality of facets, and an included angle is formed between every two adjacent facets in the surface structure and is in non-planar transition; the first light distribution element further comprises a first surface and a second surface which are oppositely arranged in the second direction, the first surface and the second surface are provided with reflecting layers, and the reflecting layers are arranged close to the first light incident face. The light device further comprises a semi-transparent and semi-reflective layer arranged on the first light emitting surface or the first light incident surface. The embodiment of the invention can be applied to an intelligent vehicle or a new energy vehicle, and the light device can present a crystal-like bright effect.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle lamps, and more particularly, to a lighting device and a vehicle. Background Art

[0002] With the development of vehicle technology, vehicle manufacturers and users are paying more and more attention to the aesthetics and uniqueness of headlight shapes, and the headlight shapes on the market are becoming more and more diverse, while headlights are required to meet lighting functions and indication functions (such as steering and braking).

[0003] The lighting effect of headlights is a key aspect of their aesthetics. Currently, headlight structures are often designed primarily to meet regulatory requirements and ensure uniform lighting. This results in a monotonous lighting effect, making it difficult to reflect brand characteristics and personalized needs. Even after lighting, the headlights' aesthetics may deteriorate. Summary of the Invention

[0004] The present application provides a lighting device and a vehicle, wherein the lighting device can present a crystal-like brilliant effect; moreover, when emitting light, the effect is more significant.

[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, which is used to emit light. The first light distribution element (140) includes a first light incident surface (141) and a light emitting portion (142) arranged relative to each other along a first direction; the first light incident surface (141) is used to receive light emitted by the first light emitting surface; the light emitting portion (142) includes a surface structure composed of a plurality of facets continuously spliced ​​together, wherein adjacent facets in the surface structure have an angle and present a non-planar transition. The first light distribution element (140) also includes a first surface (143) and a second surface (144) arranged relative to each other along a second direction, wherein the first surface (143) and the second surface (144) are provided with a reflective layer, which is arranged close to the first light incident surface (141). The lighting device also includes a semi-transparent and semi-reflective layer arranged on the first light emitting surface or the first light incident surface (141).

[0006] In the present application, since the first light-emitting portion has a surface structure composed of a plurality of facets continuously spliced ​​together, the lighting device can present a crystal-like brilliant effect; moreover, when it emits light, the effect is more significant.

[0007] Furthermore, because the first light-emitting surface or the first light-incident surface is provided with a semi-transparent and semi-reflective layer, and the first and second surfaces are provided with a reflective layer, in a non-luminous scene, after external light enters the first light distribution element through the light-emitting portion, on the one hand, some of the light can be emitted again through the light-emitting portion, thereby increasing the brightness of the first light distribution element; on the other hand, although some of the light can be incident on the components of the lighting device disposed behind the first light distribution element, after these light rays propagate through the components disposed behind the first light distribution element, due to the presence of the semi-transparent and semi-reflective layer, only some of the light rays can pass through the first light distribution element and be emitted outside the lighting device. By providing the semi-transparent and semi-reflective layers, the observer is less likely to perceive the components of the lighting device disposed behind the first light distribution element, thereby improving the quality of the lighting device.

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

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

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

[0011] For a lighting device, the angle between adjacent facets directly affects its light output continuity. In this application, by setting the angle between adjacent facets in the first surface structure to be greater than 150 degrees, the light output continuity 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 light emitted by the light emitting element to a second light incident surface of the second light distribution element (160); the second light distribution element (160) may be arranged close to the first light distribution element (140), and the first light exit surface may belong to the second light distribution element (160).

[0013] In the present application, by providing a second light distribution element in the light guide structure, the lighting device can use the second light distribution element to adjust the light distribution (eg, light intensity distribution, divergence, uniformity, etc.) to a desired range 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 light emitted by the light-emitting element to a 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 exit surface may belong to the second light distribution element (160).

[0015] In the present application, the reflector is used to guide the light to the second light distribution element, which can reduce the size of the light guide structure and is conducive to the lightweight and miniaturization of the lighting device.

[0016] In some implementations, the reflector (180) may include a concave structure, the inner surface of the concave structure may be provided with a reflective layer, and the opening of the concave structure may be provided toward the second light incident surface (161); the light-emitting element may be provided 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) may 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 entering the first light distribution element, so that the lighting device can have a better lighting effect, which is conducive to improving the quality of the lighting device.

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

[0020] In the present application, by setting the second light distribution element to milky white, it is helpful to reduce the perceptibility of the second light distribution element in a non-luminous scene.

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

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

[0023] In a second aspect, a vehicle is provided. The vehicle may include the lighting device according to the first aspect and any possible implementation thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural diagram of a lighting device provided in an embodiment of the present application;

[0025] Figure 2 is a schematic diagram illustrating the relative positional relationship of some components in the lighting device 100 provided in an embodiment of the present application;

[0026] Figure 3 is a schematic diagram of the appearance of the light distribution element 140 provided in an embodiment of the present application;

[0027] Figure 4 1 is a schematic diagram of a configuration of a translucent and transreflective layer in a lighting device 100 provided in an embodiment of the present application;

[0028] Figure 5 1 is a schematic diagram of another arrangement of the translucent and semi-reflective layers in the lighting device 100 provided in an embodiment of the present application;

[0029] Figure 6 This is another structural diagram of the lighting device provided in an embodiment of the present application;

[0030] Figure 7 is a schematic diagram of the working mode of the light distribution element 160 provided in an embodiment of the present application;

[0031] Figure 8 Schematic diagram of a configuration of a translucent and semi-reflective layer in the lighting device 200 provided in an embodiment of the present application;

[0032] Figure 9 This is another structural diagram of the lighting device provided in an embodiment of the present application;

[0033] Figure 10 is a schematic diagram illustrating the relative positional relationship of some components in the lighting device 300 provided in an embodiment of the present application;

[0034] Figure 11 Schematic diagram of the arrangement of the semi-transmissive and semi-reflective layers in the lighting device 300 provided in an embodiment of the present application;

[0035] Figure 12 1 is an exploded view of some components of the lighting device 200 provided in an embodiment of the present application;

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

[0037] Figure 14 Schematic diagram of the structure of the light distribution element 140 provided in an embodiment of the present application. DETAILED DESCRIPTION

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

[0039] The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0040] Unless the context requires otherwise, throughout the specification and claims, the term "comprise" and other forms such as the third person singular form "comprises" and the present participle form "comprising" are to be interpreted as open and inclusive, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" or "some examples" are intended to indicate that the specific features, structures, materials or characteristics associated with the embodiment or example are included in at least one embodiment or example of the present application. The schematic representation of the above terms does not necessarily refer to the same embodiment or example. In addition, the specific features, structures, materials or characteristics can be included in any one or more embodiments or examples in any appropriate manner.

[0041] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of this application, unless otherwise specified, the meaning of "plurality" refers to two or more.

[0042] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure in the embodiments of the present application. In the description of the embodiments of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0043] Reference to an "embodiment" in the embodiments of this application means that a particular feature, structure, or characteristic described in conjunction with the 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 does it refer to independent or alternative embodiments that are mutually exclusive with other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0044] The term "and / or" in this application simply describes an association between related objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0045] Additionally, the use of “based on” is meant to be open and inclusive, as a process, step, calculation, or other action “based on” one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0046] The terms "about," "approximately," or "approximately" as used in the examples of this application include the stated value and an average value that is within an acceptable range of deviation for the particular value, where the acceptable range of deviation is determined by one of ordinary skill in the art taking into account the measurement in question and the errors associated with the measurement of the particular quantity, i.e., the limitations of the measurement system.

[0047] As mentioned above, with the advancement of vehicle technology, demands for uniqueness and aesthetics in headlights are becoming increasingly stringent. The lighting performance of headlights is a crucial aspect of evaluating their aesthetics. However, during the development of some headlights, the structure and lighting performance of the headlights may be designed with regulatory compliance and luminous uniformity as the primary considerations. In this case, the aesthetics of the headlights may not improve after lighting, or may even deteriorate.

[0048] In view of this, the embodiments of the present application provide a lighting device that can make the lighting effect of the vehicle lamp more unique and beautiful, thereby enhancing the uniqueness and beauty of the vehicle lamp.

[0049] An embodiment of the present application provides a lighting device, which may include a light guide structure and a first light distribution element.

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

[0051] For example, the light-guiding structure may include optical elements with light-guiding functions, such as thick-walled components and light guides. These components can guide light emitted by a light-emitting element to a specific location. For another example, in some implementations, the light-guiding structure may employ a reflector to guide light emitted by a light-emitting element to a specific location. For another example, in some implementations, the light-guiding structure may also include components with light distribution functions.

[0052] The first light distribution element may include a first light incident surface and a light exit portion disposed opposite each other along a first direction. The first light incident surface may be configured to receive light emitted by the first light exit surface. More specifically, the first light incident surface may be disposed on the optical path of light emitted by the first light exit surface; accordingly, light emitted by the first light exit surface may enter the first light distribution element through the light incident surface. For example, the first light incident surface and the first light exit surface may be disposed opposite each other. The first light incident surface and the first light exit surface may be parallel to each other or may have a certain angle therebetween.

[0053] The light-emitting portion of the first light distribution element may include a surface structure composed of a plurality of facets joined together in a continuous pattern. Adjacent facets in this surface structure may have an angle between each other and form a non-planar transition. For example, similar to objects such as diamonds and crystals, the light-emitting portion of the first light distribution element may have a surface structure composed of a plurality of facets. Light rays propagating through the first light distribution element along different paths may exit the light distribution element through different facets of the light-emitting portion.

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

[0055] The reflective layer can be used to reflect light. For example, light incident on the first surface from within the first light distribution element will be reflected back into the interior of the light distribution element by the reflective layer and continue to propagate within the light distribution element. For another example, light incident on the first surface from outside the light distribution element will be reflected back out of the light distribution element by the reflective layer and continue to propagate outside the light distribution element.

[0056] In one design, for the first surface and the second surface, all areas of the surface may be provided with a reflective layer. In another design, the reflective layer may be provided only on a portion of the surface close to the first light incident surface.

[0057] The lighting device may further include a semi-transmissive and semi-reflective layer provided on the first light emitting surface or the first light incident surface.

[0058] The first direction and the second direction are different directions. The two directions may be at an angle to each other, or even perpendicular to each other. For example, the first direction may be the thickness direction of the lighting device / first light distribution element, and the second direction may be the height direction of the lighting device / first light distribution element.

[0059] It should be noted that, in the present application, the “light incident surface” and the “light emitting surface / portion” are described in terms of the propagation process of the light emitted by the light-emitting elements of the lighting device (such as lamp beads, light strips and other light sources); that is, in the optical path of the light emitted by the light-emitting elements in the lighting device, these light rays will enter the corresponding component from the “light incident surface” and will be emitted from the component by the “light emitting surface / portion”. The light emitted by other light sources (such as the sun, other lighting devices) may enter a component from the surface corresponding to the “light emitting surface / portion”, or may be emitted from the component from the surface corresponding to the “light incident surface”. For example, light emitted by natural light sources such as the sun may be incident from the surface corresponding to the light emitting portion of the first light distribution element, and may be emitted from the surface corresponding to the light emitting portion of the first light distribution element under the action of the reflective layer and the semi-transparent and semi-reflective layer.

[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 portion, and the light guide structure are exemplarily described.

[0061] For example, Figure 1 This is a structural diagram of a lighting device provided in an embodiment of the present 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 light beads. The light-guiding element 120 may be configured to direct light along a predetermined path to its light-emitting surface. The light-guiding element 120 may be a thick-walled component, a light-guiding strip, or other optical element with a light-guiding effect. The light-distributing element 140 may be configured 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 set toward the light emitting element 101; its light emitting surface 121 can be set on the side of the light guide element 120, more specifically, it can be set on the side where the light distribution element 140 is located and set toward the light distribution element 140.

[0064] The light distribution element 140 may include a light incident surface 141 and a light exit portion 142. The light incident surface 141 and the light exit portion 142 may be arranged opposite each other along the x-direction. The light distribution element 140 may be positioned on the optical path of light emitted from the light exit surface 121, with the light incident surface 141 facing the light exit surface 121. More specifically, the light incident surface 141 of the light distribution element 140 may be arranged opposite the light exit surface 121 of the light guide element 120.

[0065] The light incident surface 141 can be flat or curved, or it can be composed of multiple facets. The light exit portion 142 can have a surface structure composed of multiple facets connected in a continuous pattern. Adjacent facets in the light exit portion 142 can have a certain angle between them, and can be joined together using non-planar transitions such as shared edges or curved bridges. The facets in the light exit portion 142 can have regular or irregular shapes.

[0066] For example, the light emitting portion 142 may be polygonal facets; the number of edges of different facets may be the same or different. Figure 3 As shown, facets 1421 and 1422 are adjacent facets in the light-emitting portion 142; facet 1421 may be a pentagon, and facet 1422 may be a heptagon. Figure 3 As shown, other facets in the light exit portion 142 may be in the shape of a triangle, a quadrilateral, a hexagon, or the like.

[0067] Light distribution element 140 may further include surfaces 143 and 144 disposed opposite each other along the z-direction. Surfaces 143 and 144 may be flat, curved, or composed of multiple surfaces. Light distribution element 140 may include a reflective layer on surfaces 143 and 144. Light entering this reflective layer from within light distribution element 140 will be reflected back into the interior of the light distribution element and continue to propagate within it. Light entering this reflective layer from outside the light distribution element 140 will be reflected back out of the element.

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

[0069] Reference Figure 1 and Figure 2In lighting device 100, light emitted from light-emitting element 101 can enter light-guiding element 120 from the bottom. Light entering light-guiding element 120, after being guided by light-guiding element 120, can be emitted from light-emitting surface 121. Because light-emitting surface 121 is positioned toward light distribution element 140, light-guiding element 120 can guide light emitted from light-emitting element 101 to light distribution element 140. Furthermore, light emitted from light-emitting surface 121 can enter light distribution element 140 from light-incident surface 141. Light entering light distribution element 140 can be emitted from light-emitting portion 142.

[0070] for Figure 1 For 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; accordingly, the light guiding structure of the lighting device only includes the light guiding 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, Figures 1 to 3 In the figure, the x direction can be the thickness direction of the lighting device, the y direction can be the length direction of the lighting device, and the z direction can be the height direction of the lighting device. Figures 1 to 3 As shown, in the light distribution element 140, the surface 143 can be located at the top of the light distribution element, the surface 144 can be located at the bottom of the light distribution element, the light incident surface 141 can be located at the rear end of the light distribution element, and the light output portion 142 can be located at the front end of the light distribution element.

[0072] In another example, Figures 1 to 3 , the z direction may be a vertical direction, and the x direction and the y direction may be two different horizontal directions; accordingly, the plane formed by the x direction and the y direction (denoted as the xoy plane) is a horizontal plane.

[0073] Combination of the above Figures 1 to 3 The relative position relationship between the components in the lighting device 100 is exemplarily described. Figure 4 and Figure 5 , an exemplary description is given of the arrangement of the semi-transmissive and semi-reflective layers in the lighting device 100.

[0074] In some implementations, in the lighting device 100, a semi-transmissive and semi-reflective layer may be provided on the light incident surface 141. Figure 4 For example, Figure 4 (a) shows the relative position relationship between the reflective layer and the semi-transmissive and semi-reflective layer. Figure 4 (b) and (c) show the propagation paths of light in different scenarios.

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

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

[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 the surfaces 143 and 144, the light can be emitted from the light emitting portion 142, as shown in FIG. Figure 4 As shown in (c) in .

[0078] In this embodiment, because surface 141 is provided with a translucent, semi-reflective layer, in a non-illuminating scenario, only a portion of the external light entering the light distribution element 140 through the light-emitting portion 142 will pass through surface 141 and enter the components of the lighting device located behind the light distribution element 140. Furthermore, even if this light propagates behind the light distribution element 140 and then returns to surface 141, only a portion will be able to re-enter the light distribution element 140 through surface 141 due to the effect of the translucent, semi-reflective layer. This makes it difficult for the observer to perceive the structures of the lighting device located behind the light distribution element 140, thereby improving the quality of the lighting device.

[0079] In some other implementations, in the lighting device 100, the semi-transmissive and semi-reflective layer can be provided on the light emitting surface 121. Figure 5 For example, Figure 5 (a) shows the relative position relationship between the reflective layer and the semi-transmissive and semi-reflective layer. Figure 5 (b) and (c) show the propagation paths of light in different scenarios.

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

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

[0083] In this embodiment, because the surface 121 of the lighting device 100, opposite the light-entering surface 141, is provided with a translucent and semi-reflective layer, in a non-illuminating scenario, after passing through the light distribution element 140, only a portion of the external light will pass through the surface 121 and enter the components of the lighting device disposed behind the light distribution element 140. Furthermore, even if this light propagates through components disposed behind the light distribution element 140, such as the light guide structure, and then returns to the surface 121, due to the effect of the translucent and semi-reflective layer, only a portion will be able to exit from the surface 121 and pass through the light distribution element 140 again. This approach makes it difficult for the observer to perceive the structures disposed behind the light distribution element 140 in the lighting device, thereby improving the lighting device's perceived quality.

[0084] Combination of the above Figure 4 and Figure 5 , which exemplifies the arrangement of the transflective layer. Regarding lighting device 100, because light-emitting portion 142 has a surface structure composed of a plurality of continuously connected facets, the lighting device can produce a crystal-like brilliance effect; and this effect is even more pronounced when lighting device 100 emits light.

[0085] Combination of the above Figures 1 to 5 , the structure of the lighting device 100 is exemplarily described. Figures 1 to 5 In the embodiment of the present invention, the light guide structure of the lighting device includes only one component (ie, the 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 may be used to guide light emitted by the light-emitting element to a light incident surface of the second light distribution element; the second light distribution element may be disposed adjacent to the first light distribution element, and the first light exit surface may be the light exit surface of the second light distribution element.

[0087] For example, in another implementation, the light-guiding structure may include a reflector and a second light distribution element. The reflector may be configured to reflect light emitted by the light-emitting element toward a second light-incident surface of the second light distribution element. The second light distribution element may be disposed adjacent to the first light distribution element, and the first light-exiting surface may 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 implementations are exemplified. 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 implementations, the light guide structure may also include more components, which will not be illustrated one by one in this application.

[0089] The following combination Figures 6 to 8 , the structure of the lighting device 200 is exemplarily described.

[0090] For example, Figure 6 This is another structural schematic diagram of the lighting device provided in an embodiment of the present 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 ; ​​different from the lighting device 100 , the light guide structure in the lighting device further 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 arranged between the light guide element 120 and the light distribution element 140. The light distribution element 160 can include a light incident surface 161 disposed opposite the light exit surface 121, and a light exit surface 162 disposed opposite 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 exit from the light emitting portion 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; accordingly, the light guiding structure of the lighting device can include a light guiding element 120 and a light distribution element 160, the light guiding element 120 can correspond to the first light guiding 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 lighting device 100, lighting device 200 incorporates a light distribution element 160 between light guide element 120 and light distribution element 140. This allows lighting device 200 to adjust the light distribution before entering light distribution element 140 through light distribution element 160. For example, by changing the design and process parameters of light distribution element 160, parameters such as light divergence and light intensity can be adjusted to a 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 (HVH) describes the divergence of light and represents the angle between the direction where the luminous intensity is half the axial intensity and the luminous axis. A larger HVH indicates fewer reflections in the light distribution element, resulting in a less uniform light distribution. A smaller HVH indicates more reflections in the light distribution element, resulting in a more uniform light distribution.

[0098] For example, refer to Figure 7 The light guide element 120 may include a stepped structure, which may be arranged opposite the light emitting surface 121 along the x-direction. This stepped structure can be used to direct the propagation direction of light in the x-direction. Light guided by different steps of the stepped structure will be emitted from different positions on the light emitting surface 121, resulting in poor uniformity of the light emitted from the light emitting surface 121. By setting a smaller half-value angle for the light distribution element 160, the light can be more uniform before entering the light distribution element 140, resulting in a better lighting effect of the lighting device 200.

[0099] In some other embodiments, the light distribution element 160 can be milky white. For example, white microparticles can be evenly distributed throughout the light distribution element 160, giving it a milky white appearance. These particles can alter the light's propagation path, resulting in more uniform light distribution after passing through the light distribution element 160. Furthermore, the milky white color of the light distribution element 160 can help reduce its perceptibility in dark environments.

[0100] In some implementations, in the lighting device 200, the semi-transmissive and semi-reflective layer can be provided on the light incident surface 141 of the light distribution element 140. Accordingly, in the non-luminous scene, the propagation path of the external light can be the same as Figure 4 Similar to (b) in the figure; in a luminous scene, the propagation path of light can be Figure 4 Similar to (c) in .

[0101] In some other implementations, in the lighting device 200, the semi-transparent and semi-reflective layer can be provided on the light distribution element 160. More specifically, the semi-transparent and semi-reflective layer can be provided on the surface 162 of the light distribution element 160 that is opposite to the light incident surface 141. Figure 8 For example, Figure 8 (a) shows the relative position relationship between the reflective layer and the semi-transmissive and semi-reflective layer. Figure 8 (b) and (c) show the propagation paths of light in different scenarios.

[0102] Reference Figure 8 In (a), the light emitting surface 162 of the light distribution element 160 is provided with a semi-transparent and semi-reflective layer; accordingly, the surfaces 121, 161 and 141 do not need to be provided with a semi-transparent and semi-reflective film. Figure 4 and Figure 5 Similarly, in the light distribution element 140 , a reflective layer may be provided on the areas of the surfaces 143 and 144 close to 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 portion 142; under the action of the reflective layer and the semi-transmissive and semi-reflective layer, a portion of the light can be emitted from the light emitting portion 142, such as Figure 8 As shown in (b) in .

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

[0105] For the lighting device 200, since the light emitting portion 142 has a surface structure composed of multiple continuously connected facets, an observer will feel a crystal-like brilliance when observing the lighting device; and this effect is more significant when the lighting device 100 emits light.

[0106] Combination of the above Figures 6 to 8 , the structure of the lighting device 200 is exemplarily described.

[0107] In the above embodiments, both lighting devices 100 and 200 use the 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 lies in whether the light passes through the light distribution element 160 after being emitted by the light guide element 120.

[0108] In other embodiments, other methods may be used to guide the light to a specific location; for example, the light emitted by the light emitting element 101 may be guided to a specific location by reflection. Figures 9 to 11 , taking the lighting device 300 as an example, this is explained illustratively.

[0109] For example, Figure 9 This is another structural diagram of the lighting device provided in an embodiment of the present 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 known as a reflective bowl, reflective bowl, or reflective tile) and a light distribution element 160. Reflector 180 is used to guide light from light-emitting element 101 to light-incident surface 161 of light distribution element 160.

[0111] For example, refer to Figure 9 and Figure 10 The reflector 180 can be provided with a concave structure, and the inner surface of the concave structure can be provided with a reflective layer. Through the reflective layer, the reflector 180 can guide light to the opening of the concave structure. The opening of the concave structure can be positioned toward the light distribution element 140. The light-emitting element 101 can be positioned between the reflector 180 and the light distribution element 160. More specifically, the light-emitting element 101 can be positioned in the cavity formed by the concave structure.

[0112] In this case, even if light can be emitted from the light emitting element 101 in multiple directions, these light rays will be guided to the light incident surface 161 of the light distribution element 160 by the reflector 180 , thereby improving the utilization efficiency 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; accordingly, the light guiding 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 output surface 162 of the light distribution element 160 can correspond to the first light output 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, the semi-transmissive and semi-reflective layer can be disposed on the light incident surface 141 of the light distribution element 140, such as Figure 11 As shown in (a) in the figure. Accordingly, in the non-luminous scene, the propagation path of the external light can be Figure 4 Similar to (b) in .

[0115] In some other implementations, in the lighting device 300, the semi-transmissive and semi-reflective layer can be provided on the light distribution element 160; more specifically, it can be provided on a surface 162 of the light distribution element 160 that is opposite to the light incident surface 141, such as Figure 11 As shown in (b) in the figure. Correspondingly, in the non-luminous scene, the propagation path of the external light can be Figure 8 Similar to (b) in .

[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 layout space required for the light guide structure and is conducive to the miniaturization and lightweight design of the lighting device.

[0117] Combination of the above Figures 9 to 11 , exemplifying the structure of lighting device 300. The above descriptions of lighting devices (100, 200, 300) only describe the light-emitting element, light-guiding structure, and light distribution element 140 within the lighting devices. In addition to these components, a lighting device may also include components such as a lamp housing, a lampshade, and structures for securing and supporting these components.

[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 combined to form a receiving space; the light-emitting element, the light-guiding structure, and the light-distributing element in the lighting device may be arranged in the receiving space.

[0119] For example, refer to Figure 1The lampshade 112 can be fixedly connected to the lamp housing 111 via a support structure 113; the light source 101 can be fixed to the bottom of the light guide element 120 via a support structure 114; the light guide element 120 can be fixed via support structures 115 and 116, and the light distribution element 140 can be fixed via support structures 115 and 117. One or more of the above support structures 113 to 117 can be coupled to the lamp housing, or 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 supporting structures 114 and 116 can be assembled along the dotted line to form the component 106; further, the light distribution element 140, the supporting structures 115 and 117 can be assembled with the component 106 along the dotted line to form the component 107; then, the component 107 can be set in the cavity formed by the lamp housing 111 and the lampshade 112.

[0121] For the lighting devices (100, 200, 300) provided in the embodiments of the present application, when not emitting light, external light can enter the first light distribution element from the light-emitting portion; then, under the action of the reflective layer and the semi-transmissive and semi-reflective layer, the light can be emitted from the first light distribution element from the light-emitting portion. When emitting light, light emitted by the light-emitting element, after passing through the light-guiding structure and the first light distribution element, will be emitted from the first light distribution element from the light-emitting portion. Because the light-emitting portion of the first light distribution element has a surface structure similar to that of crystal or diamond, the lighting device can produce a dazzling effect similar to that of crystal or diamond.

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

[0123] For example, the lighting device provided in the embodiments of the present application can be provided on a vehicle. For example, the lighting device can be used as a vehicle's turn signal, brake light, daytime running light, or other signal light.

[0124] As a vehicle signal light, this lighting device generates visual signals through light, conveying the vehicle's status or the driver's intentions to the outside world, allowing other traffic participants to predict the vehicle's movements. Poor legibility of this visual signal can endanger driving safety. The structure of the light-emitting portion of the first light distribution element of this lighting device directly affects the effectiveness of this visual signal transmission.

[0125] In some implementations, the surface structure formed by continuously splicing multiple facets included in the light-emitting portion may include a first surface structure formed by continuously splicing facets whose angle between the normal direction and the first vertical plane is less than or equal to 60 degrees, and 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 distribution element may be greater than or equal to 1 / 3.

[0126] The following combination Figure 14 , an exemplary description is given of the surface structure of the light-emitting portion 142. Figure 14 It can be understood as a 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 portion 142, and facet 1424 is a facet adjacent to facet 1423. Figure 14 In the figure, the angle A can be a schematic representation of the angle between adjacent facets (it should be noted that, given the Figure 14 The structure of the light distribution element 140 is described in a cross-sectional view. Angle A does not actually refer to the angle between adjacent facets in the cross-section, but refers 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 distribution element 140 in the z direction (for example, when the z direction is the height direction of the light distribution element, distance C can represent its height). Figure 14 , the x direction may correspond to the first direction, the z direction may correspond to the second direction; and the xoy plane perpendicular to the z direction may correspond to the first vertical plane.

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

[0129] In light-emitting portion 142, the normal direction of the facets affects the direction of light emission. Specifically, as the angle between the facet normal and the horizontal (i.e., angle B) decreases, the light emitted by that facet becomes more easily perceived by a horizontal observer. A higher proportion of facets with a smaller angle B in light-emitting portion 142 makes the light emitted by the device more effectively visible to other road users.

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

[0131] In this example, the surface structure within the distance D of the light exit portion 142 may correspond to the first surface structure; and the distance D may correspond to the length of the first surface structure in the second direction.

[0132] In the light emitting portion 142 , the angle between adjacent facets directly affects the light emission continuity of the lighting device. The closer the angle between adjacent facets is to 180 degrees, the more similar the surface structure of the light emitting portion 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 portion 142 , the angle between adjacent facets may be greater than or equal to 150 degrees to ensure the continuity of light emission of the lighting device.

[0134] Combination of the above Figures 1 to 14 , introduces the lighting device provided in the embodiment of the present application.

[0135] The embodiment of the present application further provides a vehicle that can include any one of the possible lighting devices described above.

[0136] The vehicles involved in the embodiments of the present application are vehicles in a broad sense, and may be 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 mowers, harvesters, etc.), amusement equipment, toy vehicles, etc. The embodiments of the present application do not specifically limit the type of vehicle. For example, the vehicles in the present application may include pure electric vehicles (pure electric vehicle / battery electric vehicle, pure EV / battery EV), hybrid electric vehicles (hybrid electric vehicle, HEV), range extended electric vehicles (range extended electric vehicle, REEV), plug-in hybrid electric vehicles (plug-in hybrid electric vehicle, PHEV) or new energy vehicles (new energy vehicle, NEV), etc.

[0137] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned 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 example, the division of the light guide structure is merely a logical functional division. In actual implementation, other division methods may be used, such as combining or integrating multiple components or assemblies into another system, or omitting some features.

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

Claims

1. A lighting device, characterized in that: The lighting device comprises a light guide structure and a first light distribution element (140); The light guide structure includes a first light emitting surface, and the first light emitting surface is used to emit light; The first light distribution element (140) comprises a first light incident surface (141) and a light exit portion (142) arranged opposite to each other along a first direction, the first light incident surface (141) being used to receive light emitted by the first light exit surface, the light exit portion (142) comprising a surface structure formed by continuously splicing a plurality of facets, adjacent facets in the surface structure having an included angle and presenting a non-planar transition; The first light distribution element (140) further includes a first surface (143) and a second surface (144) arranged opposite to each other along a second direction, the first surface (143) and the second surface (144) are provided with a reflective layer, and the reflective layer is arranged close to the first light incident surface (141); The lighting device further includes a semi-transmissive and semi-reflective layer arranged 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 whose angle between the normal direction and the first perpendicular plane is less than or equal to 60 degrees, and the first perpendicular plane is a perpendicular plane to 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 angle between adjacent facets is greater than or equal to 150 degrees.

4. The lighting device according to any one of claims 1 to 3, characterized in that: The light guide structure comprises a first light guide element (120) and a second light distribution element (160), wherein the first light guide element (120) is used to guide the light emitted by the light emitting element to a second light incident surface (161) of the second light distribution element (160), the second light distribution element (160) is arranged close to the first light distribution element (140), and the first light exit surface belongs to the second light distribution element (160).

5. The lighting device according to any one of claims 1 to 3, characterized in that: The light-guiding structure comprises a reflector (180) and a second light distribution element (160), wherein the reflector (180) is used to reflect light emitted by the light-emitting element to a second light incident surface (161) of the second light distribution element (160), the second light distribution element (160) is arranged close to the first light distribution element (140), and the first light exit surface belongs to the second light distribution element (160).

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

7. The lighting device according to any one of claims 4 to 6, 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 8, characterized in that: The lighting device further includes a light emitting element, and the light guiding 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 9, characterized in that: The first light incident surface and the first light emitting surface are arranged opposite to each other.

11. A vehicle, characterized in that: The vehicle comprises the lighting device according to any one of claims 1 to 10.

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