Decorative plate structure, preparation method thereof and vehicle

Abstract

The invention relates to a plaque structure and a preparation method thereof and a vehicle, the plaque structure comprises a metal substrate, a light guide silk screen and a light emitting part, the metal substrate is provided with a diffraction slit, the metal substrate is used as a base material, good mechanical support is provided for the whole structure, and the texture of the plaque structure is improved. The light guide silk screen is arranged on one side of the metal substrate and corresponds to the diffraction slit, and the light emitting part is arranged on the other side of the metal substrate and used for emitting light beams towards the diffraction slit. In this way, the diffraction slit and the light guide screen printing are combined to allow the light beam to be diffracted when the light beam passes through, and a unique optical pattern or effect is generated. Besides, the light guide screen printing can accurately control the propagation direction and intensity distribution of the light, and the light guide screen printing is matched with the light beams emitted by the light emitting part, so that the decoration plate structure is lightened to show rich light and shadow changes at different visual angles, and the visual experience is greatly improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and particularly to a trim panel structure, a preparation method thereof, and a vehicle. Background Art

[0002] With the development of the exterior trim panel structure of automobiles, users have higher and higher requirements for the appearance and touch texture of the trim panel structure. The metallic texture has become one of the important elements of a high-class feeling. However, the current trim panel structure is usually made of a metal plate. However, the pattern on the metal plate has no lighting effect, resulting in a poor visual experience of the trim panel structure. Summary of the Invention

[0003] An embodiment of this application provides a trim panel structure, aiming to solve the problem that the pattern on the metal plate in the related art has no lighting effect, resulting in a poor visual experience of the trim panel structure.

[0004] To achieve the above object, according to the first aspect of this application, a trim panel structure is provided, including:

[0005] A metal substrate, on which diffraction slits are provided;

[0006] A light guide screen printing, provided on one side of the metal substrate and corresponding to the diffraction slits;

[0007] A light emitting part, provided on the other side of the metal substrate, and the light emitting part is used to emit a light beam towards the diffraction slits.

[0008] Optionally, it further includes a light transmissive part, the diffraction slits are filled with the light transmissive part, and the light transmissive part is used to seal the diffraction slits.

[0009] Optionally, it further includes a light homogenizing part, the light homogenizing part is located between the metal substrate and the light emitting part, and the light homogenizing part is used to make the light beam emitted by the light emitting part evenly irradiate the diffraction slits.

[0010] Optionally, the light homogenizing part is connected to the side surface of the metal substrate facing the light emitting part.

[0011] Optionally, along the direction from one side to the other side of the metal substrate, the distance between the light homogenizing part and the light emitting part is L1, where 3 mm ≤ L1 ≤ 10 mm.

[0012] Optionally, the material of the light homogenizing part includes at least one of polypropylene and polyamide.

[0013] Optionally, the light-emitting part includes a plurality of LED lights, and each LED light includes a first light source, a second light source, a third light source, and a fourth light source. The first light source is used to emit red light, the second light source is used to emit green light, the third light source is used to emit blue light, and the fourth light source is used to emit white light.

[0014] Optionally, the light guide screen printing is disposed adjacent to or covers a part of the corresponding diffraction slit.

[0015] Optionally, it further includes a housing, and the housing is connected to the metal substrate so that a cavity is formed between the housing and the metal substrate;

[0016] The light-emitting part is located in the cavity.

[0017] Optionally, a plurality of diffraction slits and a plurality of light guide screen printings are provided, and the plurality of diffraction slits and the plurality of light guide screen printings are arranged in one-to-one correspondence.

[0018] Optionally, the width of the diffraction slit is K1, where 0.05 mm ≤ K1 ≤ 0.2 mm.

[0019] Optionally, the thickness of the metal substrate is H1, where 0.4 mm ≤ H1 ≤ 1 mm.

[0020] According to the second aspect of the present application, a method for preparing a decorative panel structure is provided, including the following steps:

[0021] Obtain a metal plate, and process the metal plate to obtain a metal substrate with diffraction slits;

[0022] Perform pattern screen printing on one side of the metal substrate to obtain the light guide screen printing, and the light guide screen printing is arranged corresponding to the diffraction slit;

[0023] Obtain a light-emitting part, and dispose the light-emitting part on the other side of the metal substrate.

[0024] Optionally, after the step of obtaining a metal plate, processing the metal plate to obtain a metal substrate with diffraction slits, it further includes:

[0025] Obtain a light-transmitting part, and fill the light-transmitting part into the diffraction slit.

[0026] Optionally, after the step of performing pattern screen printing on the outside of the metal substrate to obtain a light guide screen printing, and the light guide screen printing is arranged corresponding to the diffraction slit, it further includes:

[0027] According to the vehicle surface requirement, perform stamping on the metal substrate with the light guide screen printing.

[0028] Perform injection molding on the light homogenizing resin inside the stamped metal substrate to form a light homogenizing portion inside the metal substrate.

[0029] Optionally, the steps of obtaining the light emitting portion and disposing the light emitting portion on the other side of the metal substrate include:

[0030] Obtain a housing, and connect the housing to the metal substrate so that a cavity is formed between the housing and the metal substrate.

[0031] Place the light emitting portion in the cavity.

[0032] According to a third aspect of the present application, there is provided a vehicle, including:

[0033] The decorative panel structure as described above;

[0034] A control device, electrically connected to the light emitting portion of the decorative panel structure.

[0035] Optionally, it further includes a vehicle lamp, and the vehicle lamp is electrically connected to the control device.

[0036] In the technical solution of the present application, the presence of the diffraction slit and the combination with the light guiding screen printing allow the light beam to diffract when passing through, generating a unique optical pattern or effect. In addition, the light guiding screen printing can accurately control the propagation direction and intensity distribution of light, and cooperate with the light beam emitted by the light emitting portion to light up the decorative panel structure and show rich light and shadow changes from different perspectives, greatly enhancing the visual experience. The light guiding screen printing can effectively guide and control the light beam emitted from the light emitting portion, making it more concentrated or propagating along a predetermined path, thereby improving the light utilization rate and reducing the light energy loss. Using the metal substrate as the base material not only provides good mechanical support for the entire structure but also improves the texture of the decorative panel structure. In addition, the metal substrate also helps to dissipate the heat generated during the operation of the light emitting portion due to its excellent heat conduction performance, ensuring the stability of the decorative panel structure and extending the service life of the decorative panel structure.

[0037] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.

[0039] To more fully understand the present application and its beneficial effects, the following description will be made in conjunction with the accompanying drawings, where the same reference numerals in the following description represent the same parts.

[0040] Figure 1 is one of the schematic structural diagrams of the trim structure of the present disclosure;

[0041] Figure 2 is the second schematic structural diagram of the trim structure of the present disclosure;

[0042] Figure 3 is the cross-sectional view of the trim structure of the present disclosure;

[0043] Figure 4 is Figure 3 the enlarged partial view of the position A shown;

[0044] Figure 5 is one of the schematic flow diagrams of the preparation method of the trim structure of the present disclosure;

[0045] Figure 6 is the second schematic flow diagram of the preparation method of the trim structure of the present disclosure;

[0046] Figure 7 is the third schematic flow diagram of the preparation method of the trim structure of the present disclosure;

[0047] Figure 8 is the schematic flow diagram of the control method of the vehicle of the present disclosure.

[0048] Description of reference numerals:

[0049] 10. Trim structure; 11. Metal substrate; 111. Diffraction slit; 12. Light guide screen printing; 13. Light emitting part; 131. LED lamp; 14. Light transmitting part; 15. Light homogenizing part; 16. Housing; a. Cavity. Detailed embodiments

[0050] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present application.

[0051] The present application provides a trim structure. Please refer to Figures 1 to 4 , Figure 1 which is one of the schematic structural diagrams of the trim structure of the present disclosure; Figure 2 which is the second schematic structural diagram of the trim structure of the present disclosure; Figure 3 which is the cross-sectional view of the trim structure of the present disclosure; Figure 4 which isFigure 3 Partial enlarged schematic view at position A as shown

[0052] The trim structure 10 includes a metal substrate 11, a light guide screen printing 12, and a light emitting part 13

[0053] The metal substrate 11 is provided with diffraction slits 111

[0054] It should be noted that the material of the metal substrate 11 can be selected according to needs. For example, the material of the metal substrate 11 can include aluminum, aluminum alloy, aluminum magnesium alloy, iron, stainless steel, titanium alloy, etc. Specifically, this application does not limit this

[0055] The light guide screen printing 12 is arranged on one side of the metal substrate 11 and is correspondingly arranged with respect to the diffraction slits 111

[0056] It should be noted that the light guide screen printing 12 is usually formed by inks with high reflectivity or high transmittance into line or dot matrix patterns. The design and layout of these patterns are carefully calculated according to optical simulation and actual application requirements to achieve the best lighting effect. This application does not limit the specific structure of the light guide screen printing 12

[0057] The light emitting part 13 is arranged on the other side of the metal substrate 11, and the light emitting part 13 is used to emit a light beam towards the diffraction slits 111

[0058] It should be noted that the shape of the light emitting part 13 can be selected according to needs, and this application does not limit this

[0059] In the technical solution of this application, the existence of the diffraction slits 111 and the combination with the light guide screen printing 12 allow the light beam to diffract when passing through, generating unique optical patterns or effects. In addition, the light guide screen printing 12 can accurately control the propagation direction and intensity distribution of light, cooperate with the light beam emitted by the light emitting part 13, and realize that the trim structure is lit to show rich light and shadow changes from different perspectives, greatly enhancing the visual experience. The light guide screen printing 12 can effectively guide and control the light beam emitted from the light emitting part 13, making it more concentrated or propagating along a predetermined path, thereby improving the light utilization rate and reducing light energy loss. Using the metal substrate 11 as the base material not only provides good mechanical support for the entire structure but also improves the texture of the trim structure 10. In addition, the metal substrate 11 also helps to dissipate the heat generated during the operation of the light emitting part 13 due to its excellent heat conduction performance, ensuring the stability of the trim structure 10 and extending the service life of the trim structure 10

[0060] Refer to Figure 2 and Figure 4, in some embodiments, the trim structure 10 further includes a light-transmitting portion 14. The diffraction slit 111 is filled with the light-transmitting portion 14, and the light-transmitting portion 14 is used to seal the diffraction slit 111. In this way, by using the light-transmitting portion 14 to seal the diffraction slit 111, the internal structure can be effectively protected from external factors such as dust and moisture, thereby improving the stability and durability of the entire trim structure 10. The setting of the light-transmitting portion 14 can make the trim surface smoother, which not only helps to improve the visual aesthetics but also enables smoother light propagation, avoiding abnormal scattering or reflection caused by surface unevenness.

[0061] It should be noted that the light-transmitting portion 14 is selected from materials with high transparency and appropriate refractive index to ensure that light can efficiently pass through the slit area and maintain the expected diffraction effect. The material for making the light-transmitting portion 14 can be selected according to needs. For example, the material for making the light-transmitting portion 14 can include optical-grade epoxy resin, polyurethane resin, epoxy resin, polycarbonate, silica gel, glass, acrylic, polycarbonate, calcium fluoride (CaF2), or fused quartz, etc. Specifically, this application does not limit this.

[0062] Refer to Figure 3 , in some embodiments, the trim structure 10 further includes a light homogenizing portion 15. The light homogenizing portion 15 is located between the metal substrate 11 and the light-emitting portion 13, and the light homogenizing portion 15 is used to make the light beam emitted by the light-emitting portion 13 uniformly irradiate the diffraction slit 111. In this way, the light homogenizing portion 15 reduces the brightness non-uniformity of the light-emitting portion 13 itself by scattering or diffusing light, which helps to ensure that the light beam emitted by the light-emitting portion 13 has reached a high degree of uniformity before reaching the diffraction slit 111, thereby improving the lighting consistency of the entire trim surface. The light after light homogenization treatment is softer and more uniform, reducing the glare and shadow problems that may be caused by direct light sources and providing a more comfortable visual experience.

[0063] Refer to Figure 3, in some embodiments, the light homogenizing part 15 is connected to the side surface of the metal substrate 11 facing the light emitting part 13. In this way, directly connecting the light homogenizing part 15 to the metal substrate 11 can make the entire decorative panel structure 10 more compact, which not only helps to reduce the overall thickness of the decorative panel structure 10, but also simplifies the assembly process and reduces production costs. Since the light homogenizing part 15 is arranged adjacent to the metal substrate 11, the loss of light in the propagation path is reduced, which means that the light emitted from the light emitting part 13 can more efficiently reach the light guiding silk screen 12 area after being processed by the light homogenizing part 15, and then achieve an ideal optical effect through the diffraction slit 111. The metal substrate 11 usually has good heat conduction performance. When the light homogenizing part 15 is directly connected to it, not only can the metal substrate 11 be used to help dissipate the heat generated by the light emitting part 13, but also the problems of material aging or light efficiency decline caused by local overheating can be prevented, thus extending the service life of the device. Compared with the design scheme that requires additional brackets or fixing devices, the direct connection method of the light homogenizing part 15 and the metal substrate 11 may simplify the manufacturing and assembly processes, reduce the process complexity, and may reduce the quantity of materials required.

[0064] Referring to Figure 3 , in some embodiments, along the direction from one side to the other side of the metal substrate 11, the distance between the light homogenizing part 15 and the light emitting part 13 is L1, where 3mm ≤ L1 ≤ 10mm. In this way, by limiting the distance between the light homogenizing part 15 and the light emitting part 13 within the range of 3mm to 10mm, enough space can be provided for the light beam to scatter sufficiently before entering the light homogenizing part 15, thereby improving the brightness non-uniformity and reducing phenomena such as "bright spots" and "dark areas". Additionally, if L1 < 3mm, the light beam enters the light homogenizing part 15 without sufficient diffusion, resulting in a phenomenon of bright edges and dark centers; if L1 > 10mm, although the light homogenizing effect may be further improved, the overall thickness will increase, which is not conducive to the thin and light design of the decorative panel structure 10. When the light emitting part 13 works, it generates heat. If it is too close to the light homogenizing part 15, it may cause material aging, deformation, and even a decline in optical performance. Limiting 3mm ≤ L1 ≤ 10mm can effectively isolate the heat source from sensitive optical components, improving the long-term stability and service life of the decorative panel structure 10.

[0065] It should be noted that the distance between the light homogenizing part 15 and the light emitting part 13 can be selected as needed. For example, the distance between the light homogenizing part 15 and the light emitting part 13 can be 3mm, 4mm, 4.5mm, 6mm, 6.5mm, 7mm, 7.8mm, 8mm, 8.8mm, 9mm, or 10mm, etc. Specifically, the present application does not make any limitations in this regard.

[0066] In addition, the material used to make the light homogenizing part 15 can be selected as needed. For example, in some embodiments, the material used to make the light homogenizing part 15 includes at least one of polypropylene and polyamide. Specifically, this application does not limit this.

[0067] In some embodiments, the light emitting part 13 includes a plurality of LED lights. Each LED light includes a first light source, a second light source, a third light source, and a fourth light source. The first light source is used to emit red light, the second light source is used to emit green light, the third light source is used to emit blue light, and the fourth light source is used to emit white light. In this way, by combining red light, green light, and blue light, almost any color mixture can be achieved. After adding white light, not only can the brightness be enhanced, but also the color rendering can be improved. The four-color light sources of red light, green light, blue light, and white light can provide a wider color gamut coverage, making the colors more vivid and realistic. The addition of the fourth light source can significantly increase the overall brightness without increasing power consumption. Since the fourth light source is usually more efficient than the "pseudo-white light" generated by mixing the first light source, the second light source, and the third light source, using the configuration of the first light source, the second light source, the third light source, and the fourth light source helps to reduce energy consumption while maintaining or increasing the brightness level. The first light source, the second light source, the third light source, and the fourth light source can be individually controlled in terms of their brightness and on / off states, which makes it possible to achieve complex dynamic lighting effects, such as special effects like gradual change and flicker.

[0068] It should be noted that the ratio of different color light sources can be adjusted according to the actual ambient light conditions to achieve the best visual comfort and energy efficiency.

[0069] Refer to Figure 3 and Figure 4 As shown, the light guiding silk screen 12 is disposed adjacent to the corresponding diffraction slit 111 or covers a part of the corresponding diffraction slit 111. In this way, by disposing the light guiding silk screen 12 adjacent to or covering a part of the diffraction slit 111, the direction and distribution of light can be more precisely controlled. This design helps to ensure that the light emitted from the light emitting part 13 and passing through the diffraction slit 111 can propagate along the expected path, reducing unnecessary scattering or loss. The light guiding silk screen 12 being disposed adjacent to the corresponding diffraction slit 111 or covering a part of the corresponding diffraction slit 111 can effectively adjust the intensity and direction of light, improving the overall light efficiency utilization rate. By using the combination of the light guiding silk screen 12 and the diffraction slit 111, unique visual effects, such as dynamic light and shadow changes and color gradual changes, can be created on the surface of the metal substrate 11, increasing the decorative and visual effects.

[0070] It should be noted that the light guiding silk screen 12 can be designed with specific patterns or textures to meet the light effect requirements in different application scenarios.

[0071] Refer to Figure 3, in some embodiments, the trim structure 10 further includes a housing 16, which is connected to the metal substrate 11 such that a cavity a is formed between the housing 16 and the metal substrate 11, and the light-emitting portion 13 is located within the cavity a. In this way, the housing 16 can provide effective physical protection for the light-emitting portion 13, preventing external factors such as dust, moisture, and mechanical shock from damaging the internal components. The enclosed cavity a design helps to restrict the light to propagate only on a predetermined path, reducing unnecessary lateral scattering or leakage, thereby improving the overall light efficiency. The connection between the housing 16 and the metal substrate 11 makes the trim structure 10 form a stable whole, increasing the rigidity and durability of the trim structure 10.

[0072] Referring to Figures 1 to 3 , in some embodiments, a plurality of diffraction slits 111 and a plurality of light guide silk screens 12 are provided, and the plurality of diffraction slits 111 and the plurality of light guide silk screens 12 are arranged in one-to-one correspondence. In this way, each diffraction slit 111 corresponds to a specific light guide silk screen 12, which can achieve precise guidance and control of the light emitted from each slit. This helps to improve the overall light efficiency utilization rate and ensure that the light propagates along the designed path. By configuring a dedicated light guide silk screen 12 for each diffraction slit 111, the light intensity and distribution in each area can be adjusted more finely, thereby achieving higher brightness uniformity and avoiding bright spots or dark areas. The one-to-one setting reduces the possible interference or crosstalk phenomena between different light sources, ensures the independent operation of each part, and improves the stability and reliability of the system.

[0073] Referring to Figure 4 , in some embodiments, the width of the diffraction slit 111 is K1, where 0.05 mm ≤ K1 ≤ 0.2 mm. In this way, within this range, while ensuring the strongest diffraction light, the diffraction slit 111 can effectively "shape" the light source without losing too much light flux, making the light enter the light guide silk screen 12 area or the subsequent optical system more regularly. The slit width of 0.05 mm to 0.2 mm can produce soft and clear diffraction fringes or light and shadow patterns. In addition, the width of the diffraction slit 111 in the range of 0.05 mm to 0.2 mm is convenient for processing.

[0074] It should be noted that the width of the diffraction slit 111 can be selected as needed. For example, the width of the diffraction slit 111 can be 0.05 mm, 0.06 mm, 0.07 mm, 0.08 mm, 0.09 mm, 0.1 mm, 0.16 mm, 0.175 mm, 0.18 mm, 0.195 mm, or 0.2 mm, etc. Specifically, the present application does not limit this.

[0075] Referring to Figure 3, in some embodiments, the thickness of the metal substrate 11 is H1, where 0.4 mm ≤ H1 ≤ 1 mm. In this way, the thickness of the metal substrate 11 is in the range of 0.4 - 1 mm, enabling the metal substrate 11 to have good anti-bending and anti-deformation capabilities while meeting the lightweight design requirements. Additionally, this range enables the lightweight design of the metal substrate 11 while ensuring stamping, insert molding, and no deformation, thereby reducing costs and meeting pedestrian protection regulations in terms of safety.

[0076] It should be noted that the thickness of the metal substrate 11 can be selected as needed. For example, the thickness of the metal substrate 11 can be 0.4 mm, 0.45 mm, 0.56 mm, 0.65 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, etc. Specifically, the present application does not limit this.

[0077] In the embodiments of the present application, through the combination of the metal substrate 11 with diffraction slits 111, the light guide screen printing 12, the light-emitting part 13, the light-transmitting part 14, and the light homogenizing part 15, the trim structure 10 can create lighting effects with different patterns. Additionally, compared with traditional LED array lighting, this solution has a higher granularity, and through screen printing and laser engraving processes, a higher pixel light-emitting pattern can be created. This solution can greatly reduce the number of LED light sources, and at the same time, the metal substrate 11 improves the texture of the exterior trim and reduces the plastic feeling of conventional vehicle lights.

[0078] Refer to Figure 5 , Figure 5 is one of the schematic flowcharts of the preparation method of the trim structure of the present disclosure. Second, the present application also provides a preparation method of the trim structure 10 as described above, including the following steps:

[0079] Step S100: Obtain a metal plate and process the metal plate to obtain the metal substrate 11 with diffraction slits 111.

[0080] It should be noted that processing the metal plate includes cutting and slitting the metal plate. During cutting, it is necessary to ensure that the metal plate is accurately cut into the designed size without defects such as deformation, curling, or bulging. Additionally, laser slitting is used for slitting. During the slitting process, it is necessary to precisely control the laser energy, spot size, and scanning trajectory to ensure that the incision of the slit is flat and there is no material accumulation or yellowing oxidation at the edge. When slitting, it is necessary to simultaneously spray nitrogen or other inert gases around the workpiece as a protective gas.

[0081] Step S300: Perform pattern screen printing on one side of the metal substrate 11 to obtain the light guide screen printing 12, and the light guide screen printing 12 is arranged corresponding to the diffraction slits 111.

[0082] In this step, the design of the light guide screen printing 12 corresponds one-to-one with the diffraction slit 111, which can achieve precise control of the light propagation path. By adjusting parameters such as the density and direction of the screen printing pattern, the light distribution can be optimized, reducing unnecessary scattering or loss. This design method allows the creation of complex and unique light and shadow effects. Additionally, the screen printing technology can form a strong protective film on the metal surface, increasing its wear resistance and chemical corrosion resistance, and extending its service life.

[0083] It should be noted that in this step, it is required that the light guide screen printing 12 and the diffraction slit 111 are precisely matched to ensure that the diffracted light can smoothly enter the light guide screen printing 12.

[0084] Step S600: Obtain the light-emitting part 13 and arrange the light-emitting part 13 on the other side of the metal substrate 11.

[0085] It should be noted that the type of the light-emitting part 13 can be selected according to needs, and this application does not limit it.

[0086] In the technical solution of this application, a metal plate is obtained, the metal plate is processed to obtain the metal substrate 11 with the diffraction slit 111, pattern screen printing is performed on one side of the metal substrate 11 to obtain the light guide screen printing 12, the light guide screen printing 12 is arranged corresponding to the diffraction slit 111, the light-emitting part 13 is obtained, and the light-emitting part 13 is arranged on the other side of the metal substrate 11. In this way, the entire process flow starts from obtaining and processing the metal plate, goes through precisely manufacturing the diffraction slit 111, then specifically performs the light guide screen printing 12, and finally integrates the light-emitting part 13, forming a complete optical decorative panel manufacturing solution. The process is simple, ensuring that the finally manufactured decorative panel structure 10 has a metallic texture and can emit light, improving the visual effect and meeting the user experience.

[0087] Refer to Figure 6 , Figure 6 is the second flow schematic diagram of the preparation method of the decorative panel structure of the present disclosure. In some embodiments, after the step S100 of obtaining a metal plate and processing the metal plate to obtain the metal substrate 11 with the diffraction slit 111, the following steps are further included:

[0088] Step S200: Obtain the light-transmitting part 14 and fill the light-transmitting part 14 into the diffraction slit 111.

[0089] In this step, the light-transmitting part 14 is filled into the diffraction slit 111. The light-transmitting part 14 can effectively protect the diffraction slit 111 from the influence of external environmental factors, such as dust, moisture and other pollutants, and extend its service life. In addition, the light-transmitting part 14 can ensure that light can pass through these slits efficiently, reduce light loss, and improve the overall light efficiency. The light-transmitting part 14 provides additional support for the slit, enhances the mechanical strength of the entire metal substrate 11 structure, and reduces the risk of damage caused by vibration or other external forces. After filling the light-transmitting part 14, the surface of the decorative panel can be made smoother, which not only improves the appearance quality but also avoids reflection anomalies or shadow problems caused by surface unevenness.

[0090] It should be noted that the method of filling the light-transmitting part 14 into the diffraction slit 111 can be selected according to needs. For example, it can be filled by injecting glue into the diffraction slit 111. In this glue injection process, it is necessary to ensure the stable flow rate of the glue injection nozzle, so that the fusion consistency of the resin is stable and there is no phenomenon of light emission difference caused by different densities. At the same time, it is necessary to ensure that the filled light-transmitting part 14 is flush with the surface of the metal substrate 11 on the side away from the light-emitting part 13.

[0091] Refer to Figure 7 , Figure 7 is the third flow chart of the preparation method of the decorative panel structure of the present disclosure. In some embodiments, after the step S300 of performing pattern screen printing on the outside of the metal substrate 11 to obtain the light guide screen printing 12, which corresponds to the diffraction slit 111, the following steps are further included:

[0092] Step S400: According to the vehicle surface requirements, the metal substrate 11 with the light guide screen printing 12 is stamped and formed.

[0093] In this step, it should be noted that modern automotive interiors tend to have streamlined, curved or complex surface designs. By stamping and forming, the metal substrate 11 can be made to have the required three-dimensional shape, so that it perfectly fits the vehicle body structure. The light guide screen printing 12 also deforms together with the metal substrate 11 to ensure its optical function consistency on the curved surface.

[0094] Step S500: Perform injection molding on the uniform light resin on the inner side of the stamped metal substrate 11 to form a uniform light part 15 on the inner side of the metal substrate 11.

[0095] In this step, the light homogenizing resin is usually a transparent material with diffusing particles, which can effectively scatter the light emitted by the point light source into a uniformly distributed surface light source. Injection molding is performed on the inner side of the metal substrate 11 after stamping to ensure good light effect performance even in non-planar areas. The light homogenizing part 15 formed by injection molding closely adheres to the metal substrate 11, which helps to reduce the reflection loss caused by air gaps and improve the light transmission efficiency. The injection molding process can tightly combine the light homogenizing part 15 with the metal substrate 11 to form a stable integral structure, avoiding problems such as component loosening or displacement during later assembly. After the light homogenizing part 15 and the metal substrate 11 are integrally formed, there is no need to separately install a diffusion sheet or other optical elements, which simplifies the downstream assembly process, reduces labor costs and defect rates.

[0096] In some embodiments, the step S600 of obtaining the light emitting part 13 and arranging the light emitting part 13 on the other side of the metal substrate 11 includes:

[0097] Step S610, obtain a housing 16, and connect the housing 16 to the metal substrate 11 so that a cavity a is formed between the housing 16 and the metal substrate 11.

[0098] In this step, the formation of the cavity a after the housing 16 is connected to the metal substrate 11 helps the decorative plate structure 10 to improve its impact and vibration resistance.

[0099] It should be noted that the connection method between the housing 16 and the metal substrate 11 can be selected as needed. Specifically, the housing 16 and the metal substrate 11 can be fixed by screwing, welding, or snapped together by a snap structure, etc. Specifically, the present application does not limit this.

[0100] Step S620, place the light emitting part 13 in the cavity a.

[0101] The cavity a provides a physical isolation and protection space for the light emitting part 13, effectively preventing dust, moisture, and foreign objects from entering, improving the product's sealing performance and environmental adaptability. The design of the cavity a facilitates modular production and later maintenance. For example, the light emitting part 13 can be pre-assembled and tested as an independent module and then placed in the cavity a, improving production efficiency and the yield rate. The enclosed cavity a can reduce the escape of light in non-target directions, allowing more light to be output through a predetermined path (such as the light guiding silk screen 12, diffraction slit 111), thereby improving the overall light effect.

[0102] In a third aspect, the present application further provides a vehicle, including the trim panel structure 10 and the control device as described above. The structure of the trim panel structure 10 is as described above. Since this vehicle adopts all the technical solutions of the above-mentioned embodiments, it at least has the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be elaborated here one by one. The control device is electrically connected to the light-emitting part 13 of the trim panel structure 10. The light-emitting part 13 can be controlled to emit light through the control device, improving the visual effect. In addition, the control device realizes the intelligent light-emitting part 13, with simple operation and improved user experience.

[0103] It should be noted that the control device may include: a processor, such as a central processing unit (CPU), a communication bus, a user interface, a network interface, and a memory. Among them, the communication bus is used to realize the connection and communication between these components. The user interface may include a display screen (Display) and an input unit such as a keyboard (Keyboard). Optionally, the user interface may further include a standard wired interface and a wireless interface. The network interface may optionally include a standard wired interface and a wireless interface (such as a wireless-fidelity (Wi-Fi) interface). The memory may be a high-speed random access memory (Random Access Memory, RAM) or a stable non-volatile memory (Non-Volatile Memory, NVM), such as a disk memory. Optionally, the memory may also be a storage device independent of the aforementioned processor.

[0104] Specifically, the network interface is mainly used for data communication with a network server; the user interface is mainly used for data interaction with a user; the processor and the memory may be arranged in the charging device. The control program of the charging device stored in the memory is called by the processor, and the control method of the charging device provided by the embodiments of the present invention is executed.

[0105] Those skilled in the art can understand that the above structure does not constitute a limitation on the control device, and it may include more or fewer components, or combine some components, or have different component arrangements.

[0106] This vehicle may be a fuel vehicle, a plug-in hybrid vehicle, a new energy vehicle, etc. The present application does not make specific limitations on this.

[0107] In some embodiments, the vehicle further includes vehicle lights, and the vehicle lights are electrically connected to the control device. In this way, the control device, as the core controller, simultaneously controls the vehicle lights and the light-emitting part 13 in the trim panel structure 10, realizing that the vehicle lights and the light-emitting part 13 can perform scene-based linkage, improving the visual effect.

[0108] Refer to Figure 8 ,Figure 8 It is a schematic flow chart of the control method of the vehicle of the present disclosure. In a fourth aspect, the present application also provides a control method for a vehicle, including the following steps:

[0109] Step S1000: Obtain an operation instruction.

[0110] It should be noted that the operation instruction can come from multiple input sources, such as: manual input by the user (buttons, knobs, touch panels), in-vehicle voice assistants, remote control by a mobile phone APP, or automatic triggering of a scenario mode (such as a welcome mode, a night mode).

[0111] Step S2000: Control the light-emitting part 13 to work according to the operation instruction.

[0112] In this step, according to the operation instruction, the user can freely adjust the brightness, color, dynamic effect, etc. of the light-emitting part 13 according to personal preferences or usage scenarios, enhancing the personalized experience.

[0113] It should be noted that according to different operation instructions, the light-emitting part 13 can achieve: single-color static lighting, colorful gradient or dynamic flow effects. These effects, combined with optical structures such as light guide silk printing 12 and diffraction slits 111, can create an immersive visual experience.

[0114] In some embodiments, the light-emitting part 13 includes a plurality of LED lights, and each LED light includes a first light source, a second light source, a third light source, and a fourth light source. The first light source is used to emit red light, the second light source is used to emit green light, the third light source is used to emit blue light, and the fourth light source is used to emit white light; the step of step S2000 controlling the light-emitting part 13 to work according to the operation instruction includes:

[0115] Step S2100: Control at least one of the first light source, the second light source, the third light source, and the fourth light source to work according to the operation instruction.

[0116] It should be noted that since the combination of red, green, and blue light can achieve almost the entire color gamut of color mixing, after adding white light, the overall brightness can be increased, the white light purity can be improved, and the color cast of "false white light" synthesized by red, green, and blue light can be avoided. The design of the fourth light source emitting white light can reduce power consumption compared with the first light source, the second light source, and the third light source mixing to emit false white light.

[0117] In this step, only the required light sources are started according to the operation instruction, avoiding unnecessary energy consumption. In addition, when at least one of the first light source, the second light source, the third light source, and the fourth light source is turned on, different lights can be emitted, bringing different visual experiences to the user and meeting the user's usage requirements.

[0118] In some embodiments, the first light source, the second light source, the third light source, and the fourth light source can achieve non-polar light color. At the same time, white or red recognized by regulations can emit light on the front and rear faces, and the light-emitting trim structure 10 can be certified as a position light. Other colored lights can be activated in the welcome mode, the vehicle-leaving mode, or the parking mode. Since the power system is not engaged in these modes, the lights can emit light freely. In addition, the trim structure 10 is electrically connected to the control device, and can be linked with the vehicle lights to jointly form a light dance in the welcome mode, or a customized light dance, such as festival, Say, Hi modes, etc. Specifically, the present application does not limit this.

[0119] In the description of the present application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of the present application, "a plurality" means two or more, unless otherwise specifically defined.

[0120] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0121] The embodiments, implementation manners, and related technical features of the present application can be combined and replaced with each other without conflict.

[0122] The above are only the preferred embodiments of the present application, and do not impose any form of limitation on the present application. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application still fall within the scope of the technical solution of the present application.

Claims

1. A decorative panel structure, characterized in that, Comprising: A metal substrate provided with diffraction slits; A light - guiding silk - screen disposed on one side of the metal substrate and corresponding to the diffraction slits; A light - emitting part disposed on the other side of the metal substrate, and the light - emitting part is used to emit a light beam towards the diffraction slits.

2. The veneer structure according to claim 1, characterized in that, It further includes a light - transmitting part, the diffraction slits are filled with the light - transmitting part, and the light - transmitting part is used to seal the diffraction slits.

3. The trim panel structure according to claim 1, wherein, It further includes a light - homogenizing part, the light - homogenizing part is located between the metal substrate and the light - emitting part, and the light - homogenizing part is used to make the light beam emitted by the light - emitting part uniformly irradiate the diffraction slits.

4. The trim panel structure according to claim 3, characterized in that, The light - homogenizing part is connected to the side surface of the metal substrate facing the light - emitting part.

5. The trim structure according to claim 4, wherein, Along the direction from one side to the other side of the metal substrate, the distance between the light - homogenizing part and the light - emitting part is L1, where 3mm ≤ L1 ≤ 10mm.

6. The trim panel structure according to claim 3, wherein, The material of the light - homogenizing part includes at least one of polypropylene and polyamide.

7. The trim panel structure according to any one of claims 1 to 6, characterized in that, The light - emitting part includes a plurality of LED lamps, and each LED lamp includes a first light source, a second light source, a third light source, and a fourth light source. The first light source is used to emit red light, the second light source is used to emit green light, the third light source is used to emit blue light, and the fourth light source is used to emit white light.

8. The veneer structure according to any one of claims 1 to 6, characterized in that The light - guiding silk - screen is disposed adjacent to or covers a part of the corresponding diffraction slit.

9. The trim panel structure according to any one of claims 1 to 6, characterized in that, It further includes a housing, the housing is connected to the metal substrate so that a cavity is formed between the housing and the metal substrate; The light - emitting part is located in the cavity.

10. The trim panel structure according to any one of claims 1 to 6, characterized in that, A plurality of diffraction slits and a plurality of light - guiding silk - screens are provided, and the plurality of diffraction slits and the plurality of light - guiding silk - screens are arranged in one - to - one correspondence.

11. The veneer structure according to any one of claims 1 to 6, characterized in that, The width of the diffraction slit is K1, where 0.05mm ≤ K1 ≤ 0.2mm.

12. The trim panel structure according to any one of claims 1 to 6, characterized in that, The thickness of the metal substrate is H1, where 0.4mm ≤ H1 ≤ 1mm.

13. A method for preparing a decorative panel structure according to any one of claims 1 to 12, characterized in that, Including the following steps: Obtain a metal plate, process the metal plate to obtain a metal substrate with diffraction slits; Perform pattern silk - screening on one side of the metal substrate to obtain the light - guiding silk - screen, and the light - guiding silk - screen corresponds to the diffraction slits; Obtain a light - emitting part and dispose the light - emitting part on the other side of the metal substrate.

14. The preparation method of the trim structure according to claim 13, characterized in that, After the step of obtaining a metal plate, processing the metal plate to obtain a metal substrate with diffraction slits, it further includes: Obtain a light - transmitting part and fill the light - transmitting part into the diffraction slits.

15. The preparation method of the decorative panel structure according to claim 13 or 14, characterized in that, After the step of performing pattern silk - screening on the outside of the metal substrate to obtain a light - guiding silk - screen corresponding to the diffraction slits, it further includes: According to the vehicle surface curvature requirements, stamp - form the metal substrate with the light - guiding silk - screen; Perform injection molding on the inner side of the stamped metal substrate with a light - homogenizing resin to form a light - homogenizing part on the inner side of the metal substrate.

16. The preparation method of the decorative panel structure according to claim 13 or 14, characterized in that, The step of obtaining a light - emitting part and disposing the light - emitting part on the other side of the metal substrate includes: Obtain a housing, connect the housing to the metal substrate so that a cavity is formed between the housing and the metal substrate; Place the light - emitting part in the cavity.

17. A vehicle, characterized in that, Including: The trim structure according to any one of claims 1 to 12; The control device is electrically connected to the light-emitting part of the trim structure.

18. The vehicle according to claim 17, characterized in that, It further includes a vehicle lamp, and the vehicle lamp is electrically connected to the control device.

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