Light-emitting ornament for vehicle, and interior ornament for vehicle

Abstract

A light-emitting ornament for a vehicle, and an interior ornament for a vehicle. The light-emitting ornament comprises: a matrix (20), and a light guide film (30), which is attached to the matrix (20), wherein the light guide film (30) comprises a light emission surface (310) and a bottom surface (311) opposite the light emission surface (310), and the bottom surface (311) is close to the matrix (20); a plurality of optical micro-structures (312) are constructed in at least some regions of the light guide film (30), and the plurality of optical micro-structures (312) form a preset pattern (313); after light rays (301) propagating in the light guide film (30) pass through the plurality of optical micro-structures (312), the light rays (301) change the propagation directions thereof, and exit from the light emission surface (310), so as to present the preset pattern (313) on the light emission surface (310); and the light rays (301) which do not pass through the optical micro-structures (312) do not exit from the light emission surface (310). In this way, the pattern on the light emission surface is clear and sharp, such that the light-emitting ornament requires no shielding plate and light homogenizing film, thereby facilitating a reduction in the thickness of the light-emitting ornament, and thus facilitating the use of the light-emitting ornament in narrow spaces.

Description

Illuminated trim for a vehicle and interior trim for a vehicle Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to a luminous decorative part for a vehicle. The present application also relates to an interior decorative part for a vehicle comprising the luminous decorative part. Background Art

[0002] Currently, some vehicle interior parts (eg, door panels, dashboards, ceilings, etc.) are provided with luminous decorative parts to display patterns on the interior parts as needed.

[0003] In the prior art, luminous ornaments typically consist of multiple laminated sheets, including a substrate, a light guide plate, a light-diffusing film, and a transparent protective layer. Furthermore, these ornaments often include a shielding plate with a hollow pattern, positioned along the light path (for example, between the transparent protective layer and the light-diffusing film) to allow the ornament to display a pattern corresponding to the hollow pattern. These ornaments are also relatively thick, for example, reaching 9 to 10 mm, which makes them difficult to use in confined spaces.

[0004] Summary of the Invention

[0005] In response to the above technical problems, the first aspect of this application proposes a luminous decorative part for a vehicle. The luminous decorative part comprises: a substrate, and at least one light-guiding film attached to the substrate; the light-guiding film comprises a light-emitting surface and a bottom surface opposite the light-emitting surface, the bottom surface being adjacent to the substrate; and multiple optical microstructures are formed on at least a portion of the light-guiding film, the multiple optical microstructures forming a predetermined pattern. Light propagating within the light-guiding film, after passing through the multiple optical microstructures, changes its propagation direction and is emitted from the light-emitting surface, thereby presenting the predetermined pattern on the light-emitting surface.

[0006] In one embodiment, the thickness of the light guide film is less than or equal to 1 mm.

[0007] In one embodiment, there are multiple light guide films, and the multiple light guide films are stacked; the preset patterns on each light guide film are the same or different; the preset patterns on different light guide films deviate from each other or at least partially overlap.

[0008] In one embodiment, adjacent light guide films are tightly attached together.

[0009] In one embodiment, a first reflective layer is provided between the substrate and the light guide film; the first reflective layer at least reflects the light leakage toward the substrate generated at the optical microstructures into the light guide film.

[0010] In one embodiment, the luminous ornament further includes a translucent surface modification layer, and the surface modification layer is disposed above the light emitting surface of the light guide film.

[0011] In one embodiment, the surface modification layer is in close contact with the light emitting surface, or there is a gap between the surface modification layer and the light emitting surface.

[0012] In one embodiment, the surface modification layer includes a light-transmitting area and a non-light-transmitting area deviating from the light-transmitting area, and the light-transmitting area corresponds to the preset pattern.

[0013] In one embodiment, the luminous ornament further includes a bottom surface modification layer, and the bottom surface modification layer is located between the light guide film and the substrate.

[0014] In one embodiment, the luminous ornament further includes a transparent protective layer, which covers the light emitting surface of the light guide film.

[0015] In one embodiment, the luminous ornament further includes a light source; the light guide film includes an incident surface connected between the light emitting surface and the bottom surface, and the light source is arranged to correspond to the incident surface.

[0016] In one embodiment, the light source includes a light-emitting device and a concentrator; the concentrator includes an incident end, an exit end away from the incident end, and a side wall connected between the incident end and the exit end; the light-emitting device is arranged to correspond to the incident end and the size of the light-emitting device matches the size of the incident end, so that the light emitted by the light-emitting device enters the concentrator; the exit end corresponds to the incident surface of the light-guiding film, and the size of the exit end matches the size of the incident surface, so that the light in the concentrator enters the light-guiding film.

[0017] In one embodiment, the light source further includes: a lamp box having a housing cavity; a first end of the lamp box is configured with an assembly opening connected to the housing cavity, and a second end is configured with a light exit hole connected to the housing cavity; the light emitting device is located in the housing cavity and close to the assembly opening; a concentrator is arranged in the housing cavity, and the incident end of the concentrator corresponds to the light emitting device, and the emitting end corresponds to the light exit hole.

[0018] In one embodiment, a second reflective layer is provided on the inner surface of the accommodating cavity; the second reflective layer reflects the light emitted from the side wall of the concentrator into the concentrator.

[0019] In one embodiment, the light source further comprises an end cover, which is arranged at the second end of the lamp box and has a through hole corresponding to the light exit hole, and the size of the through hole matches the size of the incident surface of the light guide film.

[0020] In one embodiment, the section of the light guide film including the incident surface extends into the light box through the light exit hole.

[0021] In one embodiment, the optical microstructure is made by any one of micro-nano imprinting, screen printing, UV imprinting, etching, and engraving.

[0022] In one embodiment, the light guide film includes a film substrate and an optical adhesive layer attached to the film substrate; the optical adhesive layer has a plurality of pits as a plurality of optical microstructures, and the plurality of pits form a predetermined pattern.

[0023] A second aspect of the present application provides a luminous trim for a vehicle. The luminous trim comprises: a plurality of light-guiding films, each of which is stacked; a predetermined pattern consisting of a plurality of optical microstructures; and a plurality of light sources, each of which is arranged to correspond to the plurality of light-guiding films so that light emitted by each light source is incident upon the corresponding light-guiding film. The luminous trim is configured to illuminate only one light source, thereby displaying the predetermined pattern on the corresponding light-guiding film; or to illuminate multiple light sources simultaneously, thereby displaying a combination of the predetermined patterns on the corresponding light-guiding films.

[0024] In one embodiment, along a direction perpendicular to the multiple light-guiding films, the preset patterns on the multiple light-guiding films do not overlap or at least partially overlap with each other; the luminous ornament is configured to be suitable for causing one or more light sources to emit light to control the brightness and / or color of the pattern displayed by the luminous ornament.

[0025] In one embodiment, the luminous ornament is adapted to be configured to cause the multiple light sources to light up or go out cyclically, so as to cyclically inject light into the corresponding light-guiding films, so that the luminous ornament displays a dynamic luminous effect.

[0026] A third aspect of the present application provides an interior trim for a vehicle, wherein the interior trim comprises the luminous trim for a vehicle as described above, and the luminous trim is disposed on the interior trim.

[0027] The beneficial effects of this application are as follows: According to the luminous trim for a vehicle of this application, multiple optical microstructures are constructed in at least a portion of the light-guiding film, and the multiple optical microstructures form a preset pattern. When the luminous trim is in use, light propagating within the light-guiding film passes through the multiple optical microstructures, changes its propagation direction, and is emitted from the light-emitting surface to present the preset pattern on the light-emitting surface; light that has not passed through the optical microstructures does not exit from the light-emitting surface. This results in a clear and sharp pattern on the light-emitting surface, eliminating the need for the shielding plate and light-distributing film used in the prior art. This helps reduce the thickness of the luminous trim, making it easier to use in confined spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0029] FIG1 schematically shows the internal structure of a vehicle according to an embodiment of the present application.

[0030] FIG2 schematically shows a dashboard of a vehicle.

[0031] FIG3 schematically shows a light-emitting trim for a vehicle according to an embodiment of the present application.

[0032] FIG4 is an enlarged view of portion I in FIG3 .

[0033] FIG5 schematically shows a plurality of optical microstructures arranged in a predetermined pattern.

[0034] FIG6 is an enlarged view of part II in FIG5.

[0035] FIG. 7 schematically shows a first reflective layer disposed between a light guide film and a substrate.

[0036] FIG. 8 schematically shows a luminous decorative part including a surface modification layer.

[0037] FIG. 9 schematically shows a light-emitting decorative part including a bottom surface finishing layer.

[0038] FIG. 10 schematically shows a light-emitting decorative piece having a plurality of light-guiding films arranged in a stacked manner.

[0039] 11 a to 11 g schematically illustrate the display effects of the luminous ornament shown in FIG. 10 .

[0040] FIG12 a schematically shows a light-guiding film fabricated by micro-nanoimprinting.

[0041] FIG12 b schematically shows a light-guiding film manufactured by screen printing.

[0042] FIG12 c schematically shows a light-guiding film produced by UV embossing.

[0043] FIG13 schematically shows a first form of light source.

[0044] FIG14 schematically shows a second form of light source.

[0045] FIG15 schematically shows a combined light source.

[0046] Reference Signs List

[0047] 1 vehicle

[0048] 10 instrument panel 11 ceiling

[0049] 12 door panels

[0050] 2 Illuminated trim for vehicles

[0051] 20 base

[0052] 30 light guide film

[0053] 30a first film layer 30b second film layer

[0054] 30c third film layer

[0055] 301 light 302 first reflection layer

[0056] 303 light leakage 304a first pattern

[0057] 304b second pattern 304c third pattern

[0058] 305 adhesive

[0059] 310 light emitting surface 311 bottom surface

[0060] 312 Optical Microstructure 313 Preset Pattern

[0061] 314 incident surface

[0062] 321 diaphragm substrate 322 pit

[0063] 323 ink 324 UV adhesive layer

[0064] 40 surface modification layer

[0065] 50 bottom surface finishing layer

[0066] 60 light source 61 combined light source

[0067] 601 light emitting device 602 concentrator

[0068] 603 incident end 604 output end

[0069] 605 circuit board 606 side wall

[0070] 610 lamp box 611 receiving cavity

[0071] 612 assembly opening 613 light exit hole

[0072] 620 end cap 621 through hole DETAILED DESCRIPTION

[0073] To make the purpose, technical solutions, and advantages of this application more clear, the technical solutions of this application will be clearly and completely described below in conjunction with the specific embodiments of this application and the corresponding drawings. Obviously, the embodiments described are only part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0074] As shown in Figures 1 and 2, a vehicle 1 includes a plurality of interior trims, such as an instrument panel 10, a ceiling 11, and a door panel 12. A light-emitting trim 2 for the vehicle (hereinafter referred to as the light-emitting trim 2 for simplicity) is provided on any of these interior trims to enable the interior trim to display a specific lighting effect as desired.

[0075] The luminous decorative element 2 will be described below with reference to FIG. 3 to FIG. 15 .

[0076] As shown in FIG. 3 , the luminous ornament 2 includes a base 20 and a light guide film 30 attached to the base 20 .

[0077] The substrate 20 may be a back plate of the light-emitting decorative component 2, used to carry and protect the light-guiding film 30. In one embodiment, the substrate 20 may also be the interior decorative component itself.

[0078] The light guide film 30 includes a light emitting surface 310 and a bottom surface 311 opposite the light emitting surface 310. The bottom surface 311 is close to the substrate 20. A plurality of optical microstructures 312 are formed in at least a portion of the light guide film 30. As shown in Figures 5 and 6, these optical microstructures 312 are arranged in a predetermined pattern 313.

[0079] When using the luminous ornament 2 of the present application, as shown in Figure 4, the light 301 propagating in the light guide film 30 will change its propagation direction and be emitted from the light emitting surface 310 after passing through these optical microstructures 312, thereby making the light guide film 30 present a preset pattern 313. The remaining light 301 still propagates in the light guide film 30 and will not be emitted from the light emitting surface 310. From the overall point of view, on the light emitting surface 310, except for the area corresponding to the preset pattern 313, there is almost no outgoing light in the remaining areas, which makes the pattern clear and sharp. In this way, the luminous ornament 2 does not need a baffle with a hollow pattern and a uniform light film as in the prior art, which reduces the number of laminated sheets used in the luminous ornament 2, thereby helping to reduce the thickness of the luminous ornament 2 (for example, the luminous ornament 2 can be constructed to have a thickness between 1.8 mm and 3.6 mm), so that the luminous ornament 2 can be used in a small space. Moreover, the structure of the luminous ornament 2 of the present application is simpler, which helps to reduce costs.

[0080] In addition, compared to conventional light guide plates, the light guide film 30 of the luminous decorative element 2 of the present application is thinner. For example, the thickness of a light guide plate is generally greater than or equal to 2 mm, while the thickness of the light guide film 30 of the present application is less than or equal to 1 mm, for example, 0.6 mm. This also helps reduce the thickness of the luminous decorative element 2.

[0081] It should be noted that the light-guiding film 30 is well known to those skilled in the art. The optical microstructure 312 refers to a structure that affects the light transmission performance at the scale of light wavelength or sub-light wavelength. In one embodiment, the optical microstructure 312 can be formed in the light-guiding film 30 and close to the bottom surface 311 in a variety of ways, for example, it can be formed by nanoimprinting or micro-nanoimprinting, or it can be formed by screen printing, etching, engraving, etc. In other embodiments, the optical microstructure 312 can also be formed at other positions in the light-guiding film 30, such as near the light-emitting surface 310. When the light-guiding film 30 is used, when the light does not encounter the optical microstructure 312, it will propagate in the light-guiding film 30 in a total reflection manner; after encountering the optical microstructure 312, the total reflection of the light is destroyed, and it is emitted from the light-emitting surface 310. These are all well known to those skilled in the art and will not be repeated here.

[0082] Figure 12a schematically illustrates a light-guiding film fabricated via micro-nanoimprinting. During the fabrication process, a film substrate 321 is first provided. Then, a plurality of recesses 322 are formed on at least a portion of the surface of the film substrate 321 via micro-nanoimprinting. Each recess 322 serves as the optical microstructure described above, and the plurality of recesses 322 form a predetermined pattern. The fabrication of a light-guiding film via etching or engraving is similar and will not be further described here.

[0083] Figure 12b schematically illustrates a light-guiding film fabricated by screen printing. During the fabrication process, a film substrate 321 is first provided. Then, ink 323 is printed on at least a portion of the surface of the film substrate 321 by screen printing. Ink 323 serves as the optical microstructure described above and forms a predetermined pattern.

[0084] Figure 12c schematically illustrates a light-guiding film manufactured by UV embossing. During the manufacturing process, a film substrate 321 is first provided. A UV adhesive layer 324 is then applied to at least a region of one surface of the film substrate 321, and the UV adhesive layer 324 is cured. Next, micro-nano embossing is performed on the cured UV adhesive layer 324 to form a plurality of pits 322 therein. Each pit 322 serves as the optical microstructure described above, and the plurality of pits 322 form a predetermined pattern. It should be noted that in the light-guiding film manufactured by UV embossing, the light-guiding film includes a film substrate 321 and a UV adhesive layer 324 attached to the film substrate 321, and the predetermined pattern is formed on the UV adhesive layer 324. It should be understood that, where appropriate, other types of optical adhesive layers may also be applied to the film substrate 321, and pits serving as optical microstructures may be formed on this optical adhesive layer.

[0085] In one embodiment, the light guide film 30 can be attached to the base 20 by insert molding, optical adhesive bonding, hot melt embedded screws, laser welding, etc. In insert molding, the light guide film 30 can be used as an insert, and the base 20 is formed by injection molding on the bottom surface 311 of the light guide film 30.

[0086] In one embodiment, the light guide film 30 is tightly attached to the substrate 20 (for example, by optical adhesive). In this way, the light guide film 30 and the substrate 20 form a single unit, thereby preventing the light guide film 30 from moving relative to the substrate 20, thereby preventing mutual wear between the light guide film 30 and the substrate 20 or abnormal noise from the light-emitting decorative element 2.

[0087] In another embodiment, there may be a gap between the light-guiding film 30 and the substrate 20 , and the light-guiding film 30 is connected to the substrate 20 only at some preselected positions (for example, by laser welding), which helps to simplify the manufacture of the luminous ornament 2 .

[0088] Optionally, as shown in FIG7 , a first reflective layer 302 is disposed between the substrate 20 and the light guide film 30. The first reflective layer 302 reflects light leakage 303 generated at the optical microstructures 312 and directed toward the substrate 20 (or the first reflective layer 302) back into the light guide film 30, and this light is ultimately emitted from the light exit surface 310. This significantly increases the brightness of the pattern displayed by the light guide film 30, further enhancing the clarity of the pattern.

[0089] In one embodiment, the first reflective layer 302 can be formed on the bottom surface 311 of the light guide film 30 or on the corresponding surface of the substrate 20. Those skilled in the art can select an appropriate reflective material (for example, the reflective material can be a reflective ink) based on the desired final brightness of the pattern, and this is not limited here. In one embodiment, the reflective material can be formed on the bottom surface 311 of the light guide film 30 or on the corresponding surface of the substrate 20 by PVD (physical vapor deposition), spraying, or other appropriate processes, and this is not limited here.

[0090] It should be understood that, if the substrate 20 itself has good light reflective properties (for example, if the substrate 20 is white), the surface of the substrate 20 in contact with the light guide film 30 can also serve as the first reflective layer 302. In this case, the luminous decorative element 2 does not need to be additionally configured with a separate first reflective layer.

[0091] Optionally, as shown in FIG8 , the luminous ornament 2 further includes a translucent surface modification layer 40. The surface modification layer 40 is disposed above the light-emitting surface 310 of the light-guiding film 30. With this structure, the surface modification layer 40 protects the light-guiding film 30, preventing damage (e.g., scratches) to the light-guiding film 30 that could affect the quality of the displayed pattern.

[0092] In one embodiment, the surface modification layer 40 is translucent. This surface modification layer 40 shields the internal components of the luminous decorative element 2, preventing the user from viewing the internal components through the surface modification layer 40 from the outside, thereby improving the aesthetics of the luminous decorative element 2. It should be noted that the user can still recognize the pattern presented by the light guide film 30 through the surface modification layer 40.

[0093] In one embodiment, the surface modification layer 40 has a transmittance between 5% and 95%, and a haze between 0.5 and 90%. By ensuring that the surface modification layer 40 has appropriate transmittance and haze, the surface modification layer 40 can block the internal components of the luminous ornament 2 while still allowing the user to discern the pattern presented by the light-guiding film 30 through the surface modification layer 40, thereby rendering the surface modification layer 40 translucent. For example, the surface modification layer 40 can have a high transmittance but a high haze (e.g., 80% transmittance and 80% haze); or a low transmittance but a low haze (e.g., 20% transmittance and 1% haze); both of these surface modification layers 40 can achieve the aforementioned effects. It should be noted that, if desired, a translucent area corresponding to a predetermined pattern can be formed on the surface modification layer 40, while the remaining area can be masked to allow the user to clearly observe the pattern.

[0094] In one embodiment, the surface modification layer 40 is tightly attached to the light emitting surface 310. Thus, the pattern on the light emitting surface 310 seen by the user through the surface modification layer 40 is clearer and has sharper edges. This is preferable for the center console and instrument lights of the vehicle 1.

[0095] In another embodiment, there is a gap between the surface modification layer 40 and the light emitting surface 310. In this way, the pattern on the light emitting surface 310 that the user sees through the surface modification layer 40 will become larger, and the boundary will be soft. This is preferred for the atmosphere light in the vehicle 1. In one embodiment, the gap may be greater than 0 mm and less than or equal to 3 mm. Of course, the gap may also be set to other numerical values ​​according to actual conditions, which are not limited here. In addition, when there is a gap between the surface modification layer 40 and the light emitting surface 310, the surface modification layer 40 may be connected to the light guide film 30 only at some pre-selected points (for example, it may be connected by laser welding).

[0096] In one embodiment, the surface modification layer 40 can also be made of a translucent material with a specific tactile feel to impart a specific tactile feel to the luminous ornament 2. For example, the surface modification layer 40 can be made of translucent leather, which imparts a leather-like tactile feel to the luminous ornament 2. In another embodiment, the surface modification layer 40 can also be made of a patterned translucent material to impart a specific pattern to the luminous ornament 2. For example, the surface modification layer 40 can be made of translucent wood or a translucent film with a preset pattern. Of course, the surface modification layer 40 can also be made of any other appropriate translucent material as desired, without limitation herein.

[0097] In one embodiment, a highly translucent foam can be placed between the surface modification layer 40 and the light-emitting surface 310. This gives the luminous ornament 2 a soft touch. However, it should be noted that the foam may cause the observed pattern to be unclear. In this case, a translucent area corresponding to the preset pattern can be formed on the surface modification layer 40, while the remaining area is masked to ensure a clear view of the pattern.

[0098] Optionally, as shown in FIG9 , the luminous decorative element 2 further includes a bottom surface finishing layer 50 . The bottom surface finishing layer 50 is positioned between the light guide film 30 and the substrate 20 . With this structure, the bottom surface finishing layer 50 can be made of a material with a pattern and / or color (e.g., a film with a pattern and / or color). Because the light guide film 30 is transparent, the user can directly observe the pattern and / or color on the bottom surface finishing layer 50 from the outside of the luminous decorative element 2 , and the user may not even be aware of the presence of the light guide film 30, thereby effectively concealing the light guide film 30.

[0099] Optionally, in the technical solution shown in Figure 9, the luminous ornament 2 also includes a transparent protective layer (not shown in the figure). The protective layer covers the light-emitting surface 310 of the light-guiding film 30. The protective layer is used to prevent the light-guiding film 30 from being damaged. For example, when the light-guiding film 30 is made of PC (polycarbonate), its hardness is HB level. When the light-emitting surface 310 of the light-guiding film 30 is used as the surface of the luminous ornament 2, this hardness level may not meet the requirements. In this case, a protective layer needs to be applied to the light-emitting surface 310. In one embodiment, the protective layer can be a transparent hardened coating, or a transparent PC sheet, etc.

[0100] It should be noted that if the hardness level of the light guide film 30 meets the requirements, it is not necessary to apply a protective layer on the light emitting surface 310. This can prevent the pattern formed on the light emitting surface 310 from color cast and light loss, thereby helping to further improve the brightness and clarity of the pattern.

[0101] 10 schematically shows another structure of a luminous decorative piece 2, wherein the luminous decorative piece 2 has a multilayer light-guiding film (eg, a first film layer 30a, a second film layer 30b, and a third film layer 30c). The first film layer 30a, the second film layer 30b, and the third film layer 30c are stacked.

[0102] In one embodiment, the preset patterns on the first film layer 30a, the second film layer 30b and the third film layer 30c may be different from each other. In this way, according to different needs, one or more of these film layers can be selected to inject light, so that the luminous ornament 2 can display different patterns, which is convenient for the user. In addition, by cyclically injecting light into each film layer, the luminous ornament 2 can display a dynamic luminous effect to meet the needs of the user. It should be understood that, according to actual conditions, the luminous ornament 2 can also be constructed to have only two layers of light-guiding film or more than three layers of light-guiding film, which will not be repeated here. Optionally, as shown in Figure 10, the first film layer 30a, the second film layer 30b and the third film layer 30c are arranged along a direction perpendicular to these film layers (direction Z as shown in Figure 10), and the preset pattern formed by the optical microstructure 312 on each film layer deviates from the preset pattern formed by the optical microstructure 312 on the remaining film layers (that is, they do not overlap with each other). According to this structure, when light is incident on any two or all of the first film layer 30a, the second film layer 30b and the third film layer 30c, the patterns on the light-emitting surface of each film layer will not overlap and can be combined into different patterns, which makes it convenient for users to use the luminous ornament 2.

[0103] In another embodiment, the preset patterns on the first, second, and third film layers 30a, 30b, and 30c are identical. In this case, the first, second, and third film layers 30a, 30b, 30c can be arranged in a direction perpendicular to these layers (direction Z as shown in FIG. 10 ), so that the preset patterns formed by the optical microstructures 312 on these layers overlap. This allows light to be directed into one or more of these layers, depending on specific needs, thereby controlling the brightness of the pattern ultimately displayed by the luminous decorative element 2.

[0104] In another embodiment, the colors of the light incident on different film layers are different. Thus, by selectively injecting light into one or more of these film layers, the color of the pattern ultimately presented by the luminous ornament 2 can be controlled.

[0105] Furthermore, regardless of whether the preset patterns on the first, second, and third film layers 30a, 30b, and 30c are the same or different, the first, second, and third film layers 30a, 30b, and 30c can be arranged in a direction perpendicular to these layers (direction Z as shown in FIG. 10 ), so that the preset pattern formed by the optical microstructures 312 on each layer deviates from the preset patterns formed by the optical microstructures 312 on the remaining layers. In this way, when light is incident on any two or all of the first, second, and third film layers 30a, 30b, and 30c, the light emitted from the light-emitting surfaces of each layer does not overlap and can be combined to form different patterns. In other embodiments, the first, second, and third film layers 30a, 30b, and 30c can also be arranged in a direction perpendicular to these layers (direction Z as shown in FIG. 10 ), so that the preset pattern formed by the optical microstructures 312 on each layer at least partially overlaps with the preset patterns formed by the optical microstructures 312 on the remaining layers. In this way, when light is incident on any two or all of the first film layer 30a, the second film layer 30b and the third film layer 30c, the patterns on the light-emitting surfaces of these film layers will overlap with each other, thereby combining into more different patterns, which further facilitates the user to use the luminous ornament 2.

[0106] Figures 11a to 11g illustrate the display effects of the luminous ornament 2 shown in Figure 10. When light is incident only on the first film layer 30a, the light is guided by the optical microstructures 312 of the first film layer 30a and then emitted from the light-emitting surface, causing the luminous ornament 2 to display a first pattern 304a (as shown in Figure 11a). When light is incident only on the second film layer 30b, the light is guided by the optical microstructures 312 of the second film layer 30b and then emitted from the light-emitting surface, passing through the first film layer 30a (and deviating from the optical microstructures 312 of the first film layer 30a), causing the luminous ornament 2 to display a second pattern 304b (as shown in Figure 11b). Similarly, when light is incident only on the third film layer 30c, the luminous ornament 2 displays a third pattern 304c (as shown in Figure 11c). When light is simultaneously incident on the first film layer 30a and the second film layer 30b, the luminous ornament 2 simultaneously displays the first pattern 304a and the second pattern 304b (as shown in FIG11d ); when light is simultaneously incident on the first film layer 30a and the third film layer 30c, the luminous ornament 2 simultaneously displays the first pattern 304a and the third pattern 304c (as shown in FIG11e ); when light is simultaneously incident on the second film layer 30b and the third film layer 30c, the luminous ornament 2 simultaneously displays the second pattern 304b and the third pattern 304c (as shown in FIG11f ); when light is simultaneously incident on the first film layer 30a, the second film layer 30b and the third film layer 30c, the luminous ornament 2 simultaneously displays the first pattern 304a, the second pattern 304b and the third pattern 304c (as shown in FIG11g ). When light is cyclically injected into the first film layer 30a, the second film layer 30b, and the third film layer 30c, the luminous decorative element 2 cyclically displays the first pattern 304a, the second pattern 304b, and the third pattern 304c. Overall, the luminous decorative element 2 exhibits a dynamic luminous effect. Of course, depending on actual circumstances, light can be injected into any one or more of the first film layer 30a, the second film layer 30b, and the third film layer 30c to cause the luminous decorative element 2 to display a desired pattern. This will not be further explained here.

[0107] In one embodiment, as also shown in FIG10 , a transparent adhesive 305 is filled between the first film layer 30a and the second film layer 30b, and between the second film layer 30b and the third film layer 30c. In this way, the first film layer 30a, the second film layer 30b, and the third film layer 30c are bonded together into a whole by the adhesive 305 so that these film layers do not move relative to each other. This prevents the film layers from accidentally misaligning with each other, thereby preventing the pattern displayed by the luminous ornament 2 from being deformed or displaying an incorrect pattern. In addition, the bonding of these film layers into a whole also prevents the film layers from wearing each other or the luminous ornament 2 from making abnormal noises. It should be noted that the adhesive 305 does not affect the propagation of light within the film layer, and allows light that changes its propagation direction after passing through the optical microstructure 312 to pass through. In one embodiment, the adhesive 305 can be any one of optical adhesive (i.e., OCA adhesive), hot melt adhesive, and water-based adhesive, all of which are well known to those skilled in the art and will not be described in detail here. Of course, those skilled in the art may also use other methods to closely bond these film layers together according to actual conditions, such as laser welding, which is not limited here.

[0108] In another embodiment, gaps may exist between adjacent film layers, and the layers are only connected to each other at some preselected positions (for example, they may be connected by laser welding). This helps to simplify the manufacture of the luminous decorative element 2 .

[0109] Optionally, the luminous ornament 2 further includes a light source 60 (as shown in FIG13 ). The light guide film 30 further includes an incident surface 314 connected between the light emitting surface 310 and the bottom surface 311. The light source 60 is positioned to correspond to the incident surface 314. Thus, light emitted by the light source 60 illuminates the light guide film 30, causing the luminous ornament 2 to display a pattern corresponding to the preset pattern 313 on the light guide film 30.

[0110] In one embodiment, when multiple light guide films 30 are present, an independent light source 60 is provided for each light guide film 30. For example, as shown in FIG10 , an independent light source 60 is provided for each of the first film layer 30a, the second film layer 30b, and the third film layer 30c. In this way, each light source 60 can be controlled to illuminate or extinguish as needed, so that the luminous decorative element 2 displays a desired pattern.

[0111] In one embodiment, the light source 60 can emit colored light, which helps the luminous ornament 2 to further present a special pattern effect.

[0112] 13 schematically shows a first form of a light source 60. The light source 60 comprises a light emitting device 601 and a light concentrator 602.

[0113] In one embodiment, the light-emitting device 601 is an LED lamp bead. LED lamp beads are compact, making them suitable for use in thin, light-emitting decorative pieces 2. Furthermore, the LED lamp bead's lighting and extinguishing can be easily controlled, allowing the light-emitting decorative piece 2 to display a desired pattern. In other embodiments, the light-emitting device 601 can also be a laser source.

[0114] The light concentrator 602 includes an incident end 603, an exit end 604 remote from the incident end 603, and a sidewall 606 connected between the incident end 603 and the exit end 604. The light-emitting device 601 is positioned to correspond to the incident end 603 of the light concentrator 602, and the dimensions of the light-emitting device 601 match those of the incident end 603, so that light emitted by the light-emitting device 601 can enter the light concentrator 602. The exit end 604 of the light concentrator 602 corresponds to the incident surface 314 of the light guide film 30, and the dimensions of the exit end 604 match those of the incident surface 614, so that light within the light concentrator 602 can enter the light guide film 30. In this way, the light concentrator 602 can maximize the amount of light emitted by the light-emitting device 601 entering the light guide film 30. The provision of the light concentrator 302 is particularly advantageous when the dimensions of the light-emitting device 601 do not match those of the incident surface 314 of the light guide film 30. For example, if the size of the light-emitting device 601 is larger than the size of the incident surface 314 of the light-guiding film 30, the light concentrator 602 is generally conical, with the larger end facing the light-emitting device 601 and the smaller end facing the light-guiding film 30, so as to guide the light emitted by the light-emitting device 601 into the light-guiding film 30 as much as possible. It should be understood that if the size of the light-emitting device 601 matches the size of the incident surface 314 of the light-guiding film 30, the light concentrator 602 may not be provided.

[0115] Optionally, as also shown in FIG13 , the light source 60 further includes a lamp box 610. The lamp box 610 has a receiving cavity 611. A first end of the lamp box 610 is configured with an assembly opening 612 communicating with the receiving cavity 611, and a second end of the lamp box 610 is configured with a light exit hole 613 communicating with the receiving cavity 611. The light emitting device 601 is located within the receiving cavity 611 and adjacent to the assembly opening 612. The light concentrator 602 is disposed within the receiving cavity 611, with the incident end 603 of the light concentrator 602 corresponding to the light emitting device 612, and the exit end 604 of the light concentrator 602 corresponding to the light exit hole 613.

[0116] In one embodiment, the light-emitting ornament 2 may further include a circuit board 605 for supplying power to the light-emitting device 601 . Thus, when the light-emitting ornament 2 is assembled, the assembly opening 612 is aligned with the circuit board 605 to accommodate the light-emitting device 601 in the accommodation cavity 611 .

[0117] In one embodiment, a second reflective layer (not shown) is provided on the inner surface of the accommodating cavity 611. The second reflective layer reflects light emitted from the sidewall 606 of the concentrator 602 into the concentrator 602, which helps to increase the amount of light entering the light guide film 30 and thus helps to increase the brightness of the pattern presented by the luminous ornament 2.

[0118] Optionally, as also shown in FIG13 , the light source 60 further includes an end cap 620. The end cap 620 is disposed at the second end of the light box 610. A through hole 621 is formed in the end cap 620, corresponding to the light exit hole 613. The size of the through hole 621 matches the size of the incident surface 314 of the light guide film 30, so that the incident surface 314 of the light guide film 30 is aligned with the through hole 621, thereby facilitating the light emitted from the exit end 604 of the light concentrator 604 to enter the light guide film 30.

[0119] Overall, the lamp box 610 and the end cover 620 protect the condenser 602 and the light emitting device 601 and also facilitate the assembly of the condenser 602 and the light emitting device 601 .

[0120] Figure 14 schematically illustrates a second type of light source 60. As shown in Figure 14 , similar to the first type of light source, the second type of light source 60 also includes a light-emitting device 601, a concentrator 602, and a lamp box 610. The main difference is that the lamp box 610 of the second type of light source 60 is longer than the concentrator 602. The section of the light guide film 30 including the incident surface 314 extends into the lamp box 610. As a result, the second type of light source 60 does not require end caps.

[0121] FIG15 schematically illustrates a combined light source 61. The combined light source 61 is compatible with a plurality of stacked light guide films 30. Specifically, the combined light source 61 includes a plurality of second-type light sources 60. These second-type light sources 60 are arranged side by side and aligned with corresponding light guide films 30, respectively, to provide light to each light guide film 30 individually.

[0122] In the combined light source 61 , adjacent light sources 60 of the second type are separated by light boxes 610 to avoid cross-lighting.

[0123] It should be understood that the combined light source 61 may also use a plurality of light sources 60 of the first type, which will not be described in detail here.

[0124] It should be noted that the present invention (e.g., the inventive concepts, etc.) has been described in the specification and / or illustrated in the drawings of this patent document based on exemplary embodiments; the embodiments of the present invention are presented by way of example only and are not intended to limit the scope of the present invention. The structure and / or arrangement of the elements of the inventive concepts embodied in the present invention as described in the specification and / or illustrated in the drawings is illustrative only. Although exemplary embodiments of the present invention have been described in detail in this patent document, those skilled in the art will readily appreciate that equivalents, modifications, variations, and the like of the subject matter of the exemplary embodiments and alternative embodiments are possible and are considered to be within the scope of the present invention; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. It should also be noted that various modifications, variations, substitutions, equivalents, changes, omissions, and the like may be made in the configuration and / or arrangement of the exemplary embodiments (e.g., in terms of concept, design, structure, apparatus, form, assembly, construction, means, function, system, process / method, steps, order of process / method steps, operation, operating conditions, performance, materials, composition, combination, etc.). ) without departing from the scope of the present invention; all such subject matter (e.g., modifications, variations, embodiments, combinations, equivalents, etc.) are intended to be included within the scope of the present invention. The scope of the present invention is not intended to be limited to the subject matter (e.g., details, structures, functions, materials, behaviors, steps, sequences, systems, results, etc.) described in the specification and / or drawings of this patent document. Considering that the claims of this patent document will be appropriately interpreted to cover the full scope of the subject matter of the present invention (e.g., including any and all such modifications, variations, embodiments, combinations, equivalents, etc.); it should be understood that the terminology used in this patent document is intended to provide a description of the subject matter of exemplary embodiments, and not as a limitation on the scope of the present invention.

[0125] It should also be noted that, depending on the exemplary embodiments, the present invention may include conventional technologies (such as those implemented and / or integrated in the exemplary embodiments, modifications, variations, combinations, equivalents), or may include any other applicable technologies (present and / or future) that have the ability to perform the functions and processes / operations described in the specification and / or illustrated in the figures. All of these technologies (such as those implemented in embodiments, modifications, variations, combinations, equivalents, etc.) are considered to be within the scope of the present invention of this patent document.

Claims

1. A luminous decorative part for a vehicle, characterized in that: The luminous ornament comprises: substrate, and At least one light-guiding film is attached to the substrate; the light-guiding film comprises a light-emitting surface and a bottom surface opposite to the light-emitting surface, and the bottom surface is close to the substrate; a plurality of optical microstructures are constructed in at least a portion of the light-guiding film, and the plurality of optical microstructures form a preset pattern, so that light propagating in the light-guiding film changes its propagation direction and is emitted from the light-emitting surface after passing through the plurality of optical microstructures, so that the light-guiding film presents the preset pattern.

2. The luminous ornament according to claim 1, characterized in that: The thickness of the light guide film is less than or equal to 1 mm.

3. The luminous ornament according to claim 1, characterized in that: There are multiple light guide films, and the multiple light guide films are stacked; the preset patterns on each light guide film are the same as or different from each other; the preset patterns on different light guide films deviate from each other or at least partially overlap.

4. The luminous ornament according to claim 3, characterized in that: The adjacent light guide films are tightly attached together.

5. The luminous ornament according to claim 1, characterized in that: A first reflective layer is arranged between the substrate and the light-guiding film; the first reflective layer at least reflects the leakage light generated at the optical microstructure toward the substrate into the light-guiding film.

6. The luminous ornament according to claim 1, characterized in that: The luminous ornament also includes a translucent surface modification layer, and the surface modification layer is arranged above the light emitting surface of the light guide film.

7. The luminous ornament according to claim 6, characterized in that: The surface modification layer is closely attached to the light emitting surface, or there is a gap between the surface modification layer and the light emitting surface.

8. The luminous ornament according to claim 6, characterized in that: The surface modification layer includes a light-transmitting area and a non-light-transmitting area deviating from the light-transmitting area, and the light-transmitting area corresponds to the preset pattern.

9. The luminous ornament according to claim 1, characterized in that: The luminous ornament further comprises a bottom surface modification layer, and the bottom surface modification layer is located between the light guide film and the substrate.

10. The luminous ornament according to claim 9, characterized in that: The luminous ornament also includes a transparent protective layer, and the protective layer covers the light emitting surface of the light guide film.

11. The luminous ornament according to claim 1, characterized in that: The luminous ornament also includes a light source; The light guide film includes an incident surface connected between the light emitting surface and the bottom surface, and the light source is arranged to correspond to the incident surface.

12. The luminous ornament according to claim 11, characterized in that: The light source includes a light emitting device and a concentrator; the concentrator includes an incident end, an exit end away from the incident end, and a side wall connected between the incident end and the exit end; The light emitting device is arranged to correspond to the incident end and the size of the light emitting device matches the size of the incident end, so that the light emitted by the light emitting device is incident into the concentrator; the exit end corresponds to the incident surface of the light guiding film, and the size of the exit end matches the size of the incident surface, so that the light in the concentrator is incident into the light guiding film.

13. The luminous ornament according to claim 12, characterized in that: The light source also includes: A lamp box, the lamp box having a accommodating cavity; the first end of the lamp box is configured with an assembly opening connected to the accommodating cavity, and the second end is configured with a light exit hole connected to the accommodating cavity; the light emitting device is located in the accommodating cavity and close to the assembly opening; the condenser is arranged in the accommodating cavity, and the incident end of the condenser corresponds to the light emitting device, and the emitting end corresponds to the light exit hole.

14. The luminous ornament according to claim 13, characterized in that: A second reflection layer is disposed on the inner surface of the accommodating cavity; the second reflection layer reflects the light emitted from the side wall of the concentrator into the concentrator.

15. The luminous ornament according to claim 13, characterized in that: The light source further includes an end cover, which is arranged at the second end of the lamp box and is provided with a through hole corresponding to the light exit hole, wherein the size of the through hole matches the size of the incident surface of the light guide film.

16. The luminous ornament according to claim 13, characterized in that: The section of the light guide film including the incident surface extends into the lamp box through the light exit hole.

17. The luminous ornament according to claim 1, characterized in that: The optical microstructure is made by any one of micro-nano imprinting, screen printing, UV imprinting, etching and engraving.

18. The luminous ornament according to claim 1, characterized in that: The light-guiding film comprises a film substrate and an optical adhesive layer attached to the film substrate; the optical adhesive layer is provided with a plurality of pits as a plurality of the optical microstructures, and the plurality of the pits form the preset pattern.

19. A luminous ornament for a vehicle, characterized in that: The luminous ornament comprises: A plurality of light guide films, wherein the plurality of light guide films are stacked and arranged; a preset pattern consisting of a plurality of optical microstructures is arranged on each of the light guide films; and A plurality of light sources, wherein the plurality of light sources are arranged to correspond to the plurality of light guide films respectively, so that the light emitted by each of the light sources is suitable for being incident into the corresponding light guide film; Wherein, the luminous ornament is configured to enable only one of the light sources to emit light so that the luminous ornament displays a corresponding preset pattern on the light-guiding film; or to enable multiple light sources to emit light at the same time so that the luminous ornament displays a combination of multiple preset patterns on the light-guiding films.

20. The luminous ornament according to claim 19, characterized in that: Along a direction perpendicular to the plurality of light guide films, the preset patterns on the plurality of light guide films do not overlap or at least partially overlap with each other; The luminous ornament is configured to enable one or more of the light sources to emit light to control the brightness and / or color of a pattern displayed by the luminous ornament.

21. The luminous ornament according to claim 19, characterized in that: The luminous ornament is suitable for being configured to make the multiple light sources light up or go out cyclically so as to cyclically inject light into the corresponding light-guiding films, so that the luminous ornament displays a dynamic luminous effect.

22. An interior trim for a vehicle, characterized in that: The invention comprises the luminous trim for a vehicle according to any one of claims 1 to 18, or the luminous trim for a vehicle according to any one of claims 19 to 21, wherein the luminous trim is arranged on the interior trim.

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