3D foldover light-emitting structure, exterior trimming part and vehicle

Abstract

The utility model provides a three-dimensional (3D) foldover light-emitting structure, an exterior trimming part and a vehicle, and belongs to the technical field of automobile parts, the 3D foldover light-emitting structure comprises a light guide plate comprising a light guide A surface and a light guide B surface; the first light source is connected to the light guide plate, and the light-emitting surface of the first light source is opposite to the end surface of the light guide plate; the light shielding plate is located on one side of the light guide plate and comprises a light shielding face A and a light shielding face B, and the light shielding face B and the light guide face A are oppositely arranged; the outer mask is located on one side of the light shielding plate and comprises a mask face A and a mask face B, the mask face B and the light shielding face A are oppositely arranged, light rays can be reflected and transmitted between the mask face B and the light shielding face A for multiple times, and the intensity of the light rays transmitted every time is gradually reduced step by step, so that the intensity of the light rays is gradually reduced step by step. According to the utility model, the laser etching of 3D textures on the outer mask is not needed, the preparation process of the grille is reduced, no image is generated on the outer mask when the grille is not lightened, and the appearance of the grille is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile parts and relates to a luminous exterior decoration part, in particular to a 3D overlapping luminous structure, an exterior decoration part and a vehicle. Background Art

[0002] With the increasing popularity of new energy vehicles, exterior trims are increasingly demanding interactive functionality. Closed front grilles, for example, are becoming increasingly popular. From emerging car manufacturers to established brands, everyone is keen on design language, leading to significant homogeneity. Brand DNA lacks the high recognition and continuity of traditional grilles. The grille itself is not a key focus of brand building, and its presence is significantly weakened. Digital interactive grilles, a new trend in future automotive front grilles, combine the high brand recognition and detailed embellishment of traditional grilles with interactive dynamic lighting. They meet the interactive functionality requirements of future automotive exteriors while also satisfying the need for brand DNA continuity and personalized customization.

[0003] A Chinese patent (CN117087586A) discloses a digital interactive grille on the front of a car and a digital interactive method. A 3D texture is formed inside the transparent substrate of the grille or by laser engraving on black masking paint. After the masking process, the 3D texture is sprayed with white uniform light paint separately. When observed from the front, the grille can present a rich visual effect under different light and different observation angles, so that the grille body can see rich 3D visual details through the transparent substrate surface, while meeting the differentiated customization needs of different brands.

[0004] However, the 3D visual effect described above comes from the 3D texture on the grille, and this design has the following problems:

[0005] First, although this 3D vision can present different visual effects according to different light and different viewing angles, it cannot form a gradient pattern because it is a physical 3D structure;

[0006] Secondly, forming a 3D texture inside the transparent base of the grille or forming a 3D texture by laser engraving on black masking paint not only complicates the preparation process of the grille, but also when the grille is in an unlit state, the internal 3D texture can be seen from the outside with the naked eye, and the integrated black effect in the unlit state cannot be achieved, and a differentiated appearance effect cannot be formed, and the visual impact is poor. Utility Model Content

[0007] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a 3D overlapping luminous structure that can present optical 3D stereoscopic images and is invisible when not lit, and has a high aesthetic appeal.

[0008] The purpose of the utility model can be achieved through the following technical solutions: A 3D overlapping light-emitting structure, comprising:

[0009] A light guide plate having a light guide surface A and a light guide surface B opposite to each other;

[0010] a first light source connected to the light guide plate, with a light emitting surface of the first light source disposed opposite an end face of the light guide plate, wherein light emitted by the first light source enters the end face of the light guide plate at the end where the first light source is located, is totally reflected within the light guide plate, and is emitted horizontally from light guide surface A;

[0011] A light shielding plate is located on one side of the light guide plate and is provided with a light shielding surface A and a light shielding surface B facing each other. The light shielding surface B is arranged opposite to the light guide surface A. A light emitting area is formed on the light shielding surface A by a laser engraving process. Light emitted from the light guide surface A enters through the light shielding surface B and is emitted from the light emitting area.

[0012] The outer mask is located on one side of the sun visor, and is provided with a relative mask A surface and a mask B surface. The mask B surface is arranged opposite to the light-shielding surface A, wherein a part of the light emitted from the light-emitting area passes through the mask B surface and then passes through the mask A surface, and the other part of the light is reflected by the mask B surface to the light-shielding surface A and then reflected again to the mask B surface. Each time the light is reflected back and forth between the mask B surface and the light-shielding surface A, the light intensity when it passes through the mask A surface is lower than the light intensity when it passed through the mask A surface for the last time, thereby forming a 3D stereoscopic image with gradually decreasing light intensity on the mask A surface.

[0013] In the above-mentioned 3D overlapping luminous structure, part of the light emitted from the luminous area enters the mask surface B in a horizontal direction, and then passes through the mask surface A in a horizontal direction. The other part of the light is reflected horizontally by the mask surface B toward the shading surface A, and then reflected to the mask surface B, and passes through the mask surface A again in a horizontal direction. Among them, the light can form multiple reflections and transmissions between the mask surface B and the shading surface A, and the intensity of the light transmitted each time decreases step by step.

[0014] In the above-mentioned 3D overlapping luminous structure, a layer of PVD reflective film is provided on the light-shielding surface A, and a layer of PVD semi-transparent and semi-reflective film is provided on the mask surface B. Part of the light incident on the mask surface B is transmitted through the mask surface A through the PVD semi-transparent and semi-reflective film, and the other part of the light is reflected onto the PVD reflective film on the light-shielding surface A, and then reflected again through the PVD reflective film onto the PVD semi-transparent and semi-reflective film on the mask surface B. Among them, the light can be reflected and transmitted multiple times between the PVD semi-transparent and semi-reflective film and the position on the PVD reflective film opposite to the luminous area, and the intensity of the light transmitted each time decreases step by step.

[0015] In the above-mentioned 3D overlapping light-emitting structure, a first gap is formed between the light-guiding surface A and the light-shielding surface B, and the range of the first gap is between 1-5 mm.

[0016] In the above-mentioned 3D overlapping light-emitting structure, a second gap is formed between the light-shielding surface A and the mask surface B, and the range of the second gap is between 3-5 mm.

[0017] In the above-mentioned 3D overlapping light-emitting structure, the horizontal height of the end surface of the light shielding plate close to the first light source is lower than the horizontal height of the lowest point of the installation position of the first light source on the light guide plate.

[0018] In the above-mentioned 3D overlapping light emitting structure, the angle between the incident light emitted by the first light source toward the end surface of the light guide plate and the end surface of the light guide plate is between 75° and 105°.

[0019] In the above-mentioned 3D overlapping light-emitting structure, the first light source is incident on the end face of the light guide plate, and part of the light is incident on the light guide surface A in an oblique direction inside, and then reflected to the light guide surface B, wherein the light is alternately incident and emitted between the light guide surface A and the light guide surface B, forming a zigzag light guide path, and the light emitted from the light guide surface A is emitted horizontally with the incident point of the light on the light guide surface A as the reference.

[0020] In the above-mentioned 3D overlapping light-emitting structure, an optical microstructure is set on the light guide surface B, and the optical microstructure includes multiple optical patterns, wherein the width of the light guide plate is proportional to the number of optical patterns on the current width, and wherein the optical pattern contains a concave-convex structure.

[0021] In the above-mentioned 3D overlapping light-emitting structure, the light guide plate is made of PC or PMMA, wherein the radius of each optical pattern is 0.1-0.4 mm. The size of the light guide plate is 550 mm * 230 mm * 140 mm, and the wall thickness is 3 mm.

[0022] In the above-mentioned 3D overlapping luminous structure, the shading plate is made of transparent PC or PMMA material, wherein the shading surface A is provided with a pinhole-free and opaque PVD aluminum plating, and the aluminum plating reflectivity is not less than 85%. The shading plate size is 1150mm*230mm*140mm, and the wall thickness is 2.5mm.

[0023] In the aforementioned 3D overlapping light-emitting structure, the outer cover is made of PC, with a hard coating or PUR coating on surface A and pinhole-free, light-transmitting PVD aluminum coating on surface B. The aluminum coating has a transmittance of 25%-35%. The outer cover measures 1200mm*300mm*162mm, with a wall thickness of 3.4mm.

[0024] The above-mentioned 3D overlapping light-emitting structure further includes:

[0025] The shadow-folding soft light board is connected to the light guide plate through a heat riveting process, and the first light source is arranged on the shadow-folding soft light board;

[0026] Multiple aluminum reinforcements are arranged in a U-shape, and the closed ends of the aluminum reinforcements are connected to the back of the double-shadow soft light panel through a bonding process;

[0027] The matrix chip board is connected to the light guide plate through a screw connection process.

[0028] In the above-mentioned 3D overlapping light-emitting structure, the aluminum reinforcement is made of ADC12 aluminum alloy and is made by a bending process. The size of the aluminum reinforcement is 19mm*18mm*16mm.

[0029] The above-mentioned 3D overlapping light-emitting structure further includes:

[0030] A housing is provided with a first mounting cavity, wherein the light guide plate and the light shielding plate are mounted in the first mounting cavity, and an outer cover is connected to the housing and seals the opening of the first mounting cavity through the outer cover;

[0031] A power control board is installed on the housing;

[0032] The heat sink is installed on the housing and fits the power control board.

[0033] In the above-mentioned 3D overlapping light-emitting structure, the heat sink is made of ADC12 aluminum alloy and is made by a casting process. It is polished after forming. The size of the heat sink is 120mm*120mm*40mm.

[0034] The utility model also provides a 3D overlapping light-emitting structure, comprising:

[0035] A light guide plate having a light guide surface A and a light guide surface B opposite to each other;

[0036] a first light source connected to the light guide plate, with a light emitting surface of the first light source disposed opposite an end face of the light guide plate, wherein light emitted by the first light source enters the end face of the light guide plate at the end where the first light source is located, is totally reflected within the light guide plate, and is emitted horizontally from light guide surface A;

[0037] A light shielding plate is located on one side of the light guide plate and is provided with a light shielding surface A and a light shielding surface B facing each other. The light shielding surface B is arranged opposite to the light guide surface A. A light emitting area is formed on the light shielding surface A by a laser engraving process. Light emitted from the light guide surface A enters through the light shielding surface B and is emitted from the light emitting area.

[0038] Second light source;

[0039] a light diffuser disposed opposite to the second light source, and comprising a light diffuser surface A and a light diffuser surface B, wherein the light emitted by the second light source is converted into a surface light source by the light diffuser;

[0040] The outer mask is located on one side of the visor, and is provided with a relative mask A surface and a mask B surface. The mask B surface is respectively arranged opposite to the shading surface A and the uniform light surface A. Part of the light emitted from the light-emitting area passes through the mask B surface and then passes through the mask A surface, and the other part of the light is reflected by the mask B surface to the shading surface A and then reflected again to the mask B surface. Each time the light travels back and forth between the mask B surface and the shading surface A, the light intensity when it passes through the mask A surface is lower than the light intensity when it passed through the mask A surface for the last time, thereby forming a 3D stereoscopic image with gradually decreasing light intensity on the mask A surface.

[0041] In the above-mentioned 3D overlapping light-emitting structure, a third gap is formed between the uniform light surface A and the mask surface B, and the range of the third gap is between 1-3 mm.

[0042] The above-mentioned 3D overlapping light-emitting structure further includes:

[0043] A housing is provided with a first mounting cavity and a second mounting cavity, wherein the light guide plate and the light shielding plate are mounted in the first mounting cavity, the second light source and the light diffuser are mounted in the second mounting cavity, and the cavity openings of the first mounting cavity and the second mounting cavity are sealed by an outer cover;

[0044] A power control board is installed on the housing;

[0045] The heat sink is installed on the housing and fits the power control board.

[0046] The present invention also provides an exterior trim comprising the 3D overlapping luminous structure, wherein the exterior trim may be a luminous grille, front and rear bumpers, side trims, front and rear through lights, and a smart B-pillar.

[0047] The utility model also provides a vehicle, comprising the exterior trim.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] (1) The utility model provides a 3D overlapping luminous structure, which forms a 3D stereoscopic image on the outer cover by multiple reflections and transmissions of light between the outer cover and the light shielding plate. On the one hand, there is no need to laser engrave 3D stereoscopic textures on the outer cover, which reduces the preparation process of the exterior decoration. On the other hand, when not lit, the outer cover presents an integrated black effect. In addition, by setting a light guide plate, the light is uniformed to avoid the formation of bright spots on the outer cover. By setting a light shielding plate, the width of the black edge at the edge of the outer cover is shortened.

[0050] (2) The light emitted from the light guide surface A is all arranged horizontally, which realizes the uniformity of the light. Moreover, the longer the distance the light is transmitted in the light guide plate, the better the uniform light effect. In addition, the light of the first light source is emitted from the end face of the light guide plate. Therefore, the bright spot will only exist on the end face of the light guide plate at most, and will not appear on the light guide surface A. In addition, the light shielding plate is located between the outer cover and the light guide plate, which can block the bright spot on the end face of the light guide plate to prevent the bright spot from appearing on the outer cover, thereby improving the aesthetics of the exterior decoration when displaying 3D images.

[0051] (3) By setting the first gap, the light shielding plate and the light guide plate are installed to avoid vibration grinding or interference between the two.

[0052] (4) The second gap is set mainly to control the distance between images and avoid intersection or misalignment between two adjacent images.

[0053] (5) By setting the first gap and the second gap, the airflow inside the exterior decoration is facilitated, the generated mist is prevented from condensing, and the reliability of the exterior decoration is improved.

[0054] (6) The reason why the angle between the incident light and the end face of the light guide plate is set between 75° and 105° is to ensure that more than 90% of the light is effectively utilized, that is, to improve the utilization rate of light. If it is greater than the preset angle, a lot of light will not be well utilized, reducing the efficiency of the entire optics.

[0055] (7) By setting an optical microstructure on the light guide surface B, the light is transmitted in a broken line manner in the light guide plate, so that uniform light is obtained on the light guide surface A. Moreover, as the distance of light transmission becomes longer, the uniform light effect is better.

[0056] (8) The third gap is also set to facilitate the installation of the light diffuser, to avoid vibration, friction and interference between the light diffuser and the outer cover, and to facilitate the flow of air inside the outer decoration to prevent fog condensation. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 This is an exploded view of a 3D overlapping luminous structure of the present invention, taking a grille as an example.

[0058] Figure 2 This is a cross-sectional view of a 3D overlapping luminous structure of the present invention, taking a grille as an example.

[0059] Figure 3 It is a structural schematic diagram of a light guide plate in a preferred embodiment of the present invention.

[0060] Figure 4It is a structural schematic diagram of the light guide plate in another perspective in a preferred embodiment of the present invention.

[0061] Figure 5 It is an exploded view of a sunshade in a preferred embodiment of the present invention.

[0062] Figure 6 It is an exploded view of the outer cover in a preferred embodiment of the present invention.

[0063] Figure 7 This is a schematic diagram of the connection structure between the overlapping soft light panel and the aluminum reinforcement in a preferred embodiment of the present invention.

[0064] In the figure, 10, light guide plate; 11, light guide surface A; 12, light guide surface B; 13, optical pattern; 20, first light source; 30, light shielding plate; 31, light shielding surface A; 32, light shielding surface B; 33, light-emitting area; 34, PVD reflective film; 35, light shielding substrate; 40, outer mask; 41, mask surface A; 42, mask surface B; 43, PVD semi-transparent and semi-reflective film; 44, mask substrate; 45, coating; 50, overlapping soft light board; 60, aluminum reinforcement; 70, matrix chip board; 80, second light source; 90, light homogenizing plate; 91, light homogenizing surface A; 92, light homogenizing surface B; 100, shell; 110, first mounting cavity; 120, second mounting cavity; 200, power control board; 300, heat sink. DETAILED DESCRIPTION

[0065] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0066] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0067] In the prior art, there are generally two types of 3D image presentations. One is a physical 3D image, such as a digital interactive grille and a digital interactive method for the front face of a car disclosed in the background technology, which forms a 3D texture on the grille through a laser engraving process. However, this presentation method has the following problems: First, although the 3D vision can present different visual effects according to different light and different viewing angles, it cannot form a gradient pattern because it is a physical 3D structure; second, the 3D stereoscopic texture is set on the grille through the laser engraving process, which complicates the preparation process of the grille, and even if the grille is not lit, its 3D stereoscopic texture is still visible, affecting the appearance of the grille.

[0068] Another method also uses optical 3D image presentation, but it uses a method of setting up multiple LED light sources and multiple light surfaces to produce multi-level images. This results in high power consumption for the entire vehicle and cannot meet the needs of energy conservation and emission reduction. Alternatively, a single LED light source is set up and combined with multiple stepped reflective surfaces to form a multi-level image. However, this easily results in extremely wide black edges at the edges of the grille and an uneven light-emitting pattern.

[0069] Therefore, based on the above-mentioned problems, the present invention provides a 3D overlapping luminous structure, which can be applied to exterior trims, where the exterior trims can be luminous grilles, front and rear bumpers of the car, side trims, front and rear through lights and smart B-pillars. In this patent, the luminous grille is taken as an example.

[0070] like Figures 1 to 7 As shown, including:

[0071] A light guide plate 10 having a light guide surface A 11 and a light guide surface B 12 opposite to each other;

[0072] A first light source 20 is connected to the light guide plate 10, with the light emitting surface of the first light source 20 being arranged opposite the end surface of the light guide plate 10. Light emitted by the first light source 20 enters the end surface of the light guide plate 10 at the end where the first light source 20 is located, is totally reflected within the light guide plate 10, and is then emitted horizontally from the light guide surface A 11.

[0073] A light shielding plate 30 is located on one side of the light guide plate 10 and is provided with a light shielding surface A 31 and a light shielding surface B 32. The light shielding surface B 32 is arranged opposite the light guide surface A 11. A light emitting area 33 is formed on the light shielding surface A 31 by a laser engraving process. Light emitted from the light guide surface A 11 enters through the light shielding surface B 32 and is emitted from the light emitting area 33.

[0074] The outer mask 40 is located on one side of the visor 30, and is provided with a relative mask A surface 41 and a mask B surface 42 on the outer mask 40. The mask B surface 42 is arranged opposite to the shading A surface 31, wherein a part of the light emitted from the light-emitting area 33 passes through the mask B surface 42 and passes through the mask A surface 41, and the other part of the light is reflected by the mask B surface 42 to the shading A surface 31 and then reflected again to the mask B surface 42. Each time the light is reflected back and forth between the mask B surface 42 and the shading A surface 31, the light intensity when it passes through the mask A surface 41 is lower than the light intensity when it passed through the mask A surface 41 last time, thereby forming a 3D stereoscopic image with gradually decreasing light intensity on the mask A surface 41.

[0075] The present invention provides a 3D overlapping image luminous structure. A 3D stereoscopic image is formed on the outer cover 40 by multiple reflections and transmissions of light between the outer cover 40 and the light shielding plate 30. This eliminates the need for laser engraving a 3D stereoscopic texture on the outer cover 40, simplifying the grille manufacturing process. Furthermore, no image is produced on the outer cover 40 when the light is off, preserving the grille's appearance. Furthermore, the light guide plate 10 is provided to uniformly distribute light, preventing bright spots from forming on the outer cover 40. The light shielding plate 30 is provided to shorten the width of the black border at the edge of the outer cover 40.

[0076] It is worth mentioning that the width of the black surface in the prior art is generally about 35 mm, while the width of the black edge in this embodiment is about 10 mm, which is reduced to 30% of the original width.

[0077] It is further pointed out that part of the light emitted from the light-emitting area 33 enters the mask B surface 42 in a horizontal direction, and then passes through the mask A surface 41 in a horizontal direction, and the other part is emitted toward the shading A surface 31 in a horizontal direction, and then reflected to the mask B surface 42, and passes through the mask A surface 41 again in a horizontal direction, wherein the light can form multiple reflections and transmissions between the mask B surface 42 and the shading A surface 31, and the intensity of the light transmitted each time decreases step by step.

[0078] In this embodiment, the light emitted from the light guide surface A 11 is all arranged horizontally, thereby achieving light uniformity. Moreover, the longer the distance the light is transmitted within the light guide plate 10, the better the light uniformity effect. In addition, the light from the first light source 20 is emitted from the end face of the light guide plate 10. Therefore, bright spots will only exist on the end face of the light guide plate 10 at most, and will not appear on the light guide surface A 11. In addition, the light shielding plate 30 is located between the outer cover 40 and the light guide plate 10, which can block the bright spots on the end face of the light guide plate 10 and prevent the bright spots from appearing on the outer cover 40, thereby improving the aesthetics of the grille when displaying 3D images.

[0079] Preferably, a layer of PVD reflective film 34 is provided on the shading surface A 31, and a layer of PVD semi-transparent and semi-reflective film 43 is provided on the mask B surface 42. Part of the light incident on the mask B surface 42 is transmitted through the mask A surface 41 by the PVD semi-transparent and semi-reflective film 43, and the other part of the light is reflected onto the PVD reflective film 34 of the shading surface A 31, and then reflected again by the PVD reflective film 34 onto the PVD semi-transparent and semi-reflective film 43 of the mask B surface 42. The light can be reflected and transmitted multiple times between the PVD semi-transparent and semi-reflective film 43 and the position on the PVD reflective film 34 opposite to the light-emitting area 33, and the intensity of the light transmitted each time decreases step by step.

[0080] It is worth mentioning that the outer mask 40 includes a mask substrate 44, and the A surface of the mask substrate 44, that is, the mask A surface 41, is provided with a hard coating 45, or a PUR coating 45, and the B surface of the mask substrate 44, that is, the mask B surface 42, is provided with a PVD semi-transparent and semi-reflective film 43, wherein the PVD semi-transparent and semi-reflective film 43 is a pinhole-free, light-transmitting PVD aluminum-plated. Regarding the sunshade 30, the sunshade 30 includes a sunshade substrate 35, and the A surface of the sunshade substrate 35, that is, the light-shielding A surface 31, is provided with a PVD reflective film 34, which is a pinhole-free, light-opaque PVD aluminum-plated. Then, a luminous area 33 is formed on the PVD reflective film 34 and the sunshade 30 by a laser engraving process. The pattern of the luminous area 33 can be a variety of patterns.

[0081] In addition, in this embodiment, the PVD semi-transmissive and semi-reflective film 43 and the mask substrate 44, and the PVD reflective film 34 and the light-shielding substrate 35 are generally connected by bonding or heat sealing.

[0082] In this embodiment, the principle of the semi-transparent and semi-reflective film refers to a film material with special reflection and transmission properties. It can be translucent on one side of the film and reflective on the other side. This film material is usually composed of multiple layers of metal film and non-metallic film materials alternately stacked. Under the irradiation of light, the surrounding structure and thickness of the film material will produce a resonance effect, causing interference between the reflected and transmitted light, thereby achieving the special optical effect of semi-transmission and semi-reflection.

[0083] It is further pointed out that the size of the shading plate 30 is 1150mm*230mm*140mm, and its material is transparent PC material or PMMA material. In this embodiment, PC material is preferred, and the wall thickness is 2.5mm. Among them, pinhole-free and opaque PVD aluminum plating is provided on the shading A surface 31, and the reflectivity of the aluminum plating is not less than 85%.

[0084] It is further pointed out that the size of the outer mask 40 is 1200mm*300mm*162mm, and its material is transparent PC material or PMMA material with a wall thickness of 3.4mm. In this embodiment, PC material is preferably provided. A hard layer or PUR layer is provided on the mask A surface 41, and a pinhole-free and light-transmitting PVD aluminum coating is provided on the mask B surface 42, and the aluminum coating transmittance is 25%-35%.

[0085] Preferably, a first gap L1 is formed between the light-guiding surface A 11 and the light-shielding surface B 32 , and the first gap L1 is in the range of 1-5 mm.

[0086] In this embodiment, the first gap L1 is provided to facilitate installation of the light shielding plate 30 and the light guide plate 10 , thereby avoiding problems such as vibration grinding or interference between the two.

[0087] Preferably, a second gap L2 is formed between the light-shielding surface A 31 and the mask surface B 42 , and the second gap L2 is in the range of 3-5 mm.

[0088] In this embodiment, the second gap L2 is provided mainly to control the distance between images and to avoid intersection or misalignment between two adjacent images.

[0089] In addition, in addition to the functions described above, the first gap L1 and the second gap L2 are provided to facilitate the flow of air inside the grille, prevent the generated mist from condensing, and improve the reliability of the grille.

[0090] Preferably, the horizontal height of the end surface of the light shielding plate 30 close to the first light source 20 is lower than the horizontal height of the lowest point of the installation position of the first light source 20 on the light guide plate 10 .

[0091] It's worth noting that the lower end of the light shield 30 is located at a lower level than the lowest point of the first light source 20's installation. That is, when the first light source 20 is vertically projected onto the light shielding surface B 32, the projection area of ​​the first light source 20 lies within the light shielding surface B 32. In other words, when a user looks from the light shielding surface A 31 toward the light shielding surface B 32, the first light source 20 is completely hidden behind the light shield 30. This further prevents bright spots generated by the light emitted by the first light source 20 from being projected onto the outer cover 40, thereby enhancing the aesthetic quality of the outer cover 40 when developing 3D light and shadows.

[0092] It is further pointed out that the angle between the incident light from the first light source 20 toward the end surface of the light guide plate 10 and the end surface of the light guide plate 10 is between 75° and 105°, with 90° being the best.

[0093] In this embodiment, the angle between the incident light and the end face of the light guide plate 10 is set between 75° and 105° so as to ensure that more than 90% of the light is effectively utilized, that is, to improve the utilization rate of the light. If it is greater than the preset angle, a lot of light will not be well utilized, thereby reducing the efficiency of the entire optics.

[0094] Preferably, the first light source 20 is incident on the end face of the light guide plate 10, and part of the light is incident on the light guide surface A 11 in an oblique direction, and then reflected to the light guide surface B 12, wherein the light is alternately incident and emitted between the light guide surface A 11 and the light guide surface B 12, forming a zigzag light guide path, and the light emitted from the light guide surface A 11 is emitted horizontally with the incident point of the light on the light guide surface A 11 as the reference.

[0095] It is further pointed out that an optical microstructure is provided on the light guide B surface 12, and the optical microstructure includes a plurality of optical patterns 13, wherein the optical pattern includes a concave-convex structure. The width of the light guide plate 10 is proportional to the number of the optical patterns 13 on the current width.

[0096] In this embodiment, an optical microstructure is provided on the light guide B surface 12 so that light is conducted in a zigzag manner within the light guide plate 10, thereby obtaining uniform light on the light guide A surface 11. Moreover, as the light conduction distance becomes longer, the uniform light effect obtained becomes better.

[0097] It is further pointed out that the size of the light guide plate 10 is 550mm*230mm*140mm, its material is PC, and the wall thickness is 3mm. The radius of each optical pattern 13 is 0.1-0.4mm. The radius of the optical pattern 13 used in this embodiment is 0.2mm, and the mold at the optical pattern 13 requires high-precision machine tools to high-speed milling processing, and polishing is prohibited.

[0098] Preferably, the 3D overlapping light-emitting structure further includes:

[0099] The shadow soft light board 50 is connected to the light guide plate 10 by a heat riveting process, and the first light source 20 is arranged on the shadow soft light board 50;

[0100] A plurality of aluminum reinforcements 60 are arranged in a U-shape, and the closed ends of the aluminum reinforcements 60 are connected to the back of the shadow soft light panel 50 by a bonding process;

[0101] The matrix chip board 70 is connected to the light guide plate 10 by screwing.

[0102] It is worth mentioning that the aluminum reinforcement 60 is the back of the true surplus shadow soft light board 50, which is mainly used for heat dissipation of the first light source 20, and the number of aluminum reinforcements 60 is 32, among which the maximum size of a single one is 19mm*18mm*16mm, and the weight is 1g / piece. The material is ADC12 aluminum alloy and is made of bending process.

[0103] Preferably, the 3D overlapping light-emitting structure further includes:

[0104] a second light source 80;

[0105] The light diffuser 90 is disposed opposite to the second light source 80 and includes a light diffuser A surface 91 and a light diffuser B surface 92 . The light diffuser 90 converts the light emitted from the second light source 80 into a surface light source.

[0106] In this embodiment, the first light source 20 is an LED lamp, and the second light source 80 is a LOGO light board, wherein the LOGO light board is used to display the car logo, and the point light source or line light source emitted by the LOGO light board is converted into a surface light source through the light homogenizing plate 90, so that the image presented will be clearer, and the light will be more uniform and softer.

[0107] Further preferably, a third gap L3 is formed between the light homogenizing surface A 91 and the mask surface B 42 , and the range of the third gap L3 is between 1-3 mm.

[0108] In this embodiment, the third gap L3 is provided to facilitate the installation of the light diffuser 90 and avoid vibration, friction and interference between the light diffuser 90 and the outer cover 40. At the same time, it is beneficial to the flow of air inside the grille and prevents fog condensation.

[0109] Preferably, the 3D overlapping light-emitting structure further includes:

[0110] The housing 100 is provided with a first mounting cavity 110 and a second mounting cavity 120. The light guide plate 10 and the light shielding plate 30 are mounted in the first mounting cavity 110, and the second light source 80 and the light diffuser 90 are mounted in the second mounting cavity 120. The outer cover 40 seals the openings of the first mounting cavity 110 and the second mounting cavity 120.

[0111] The power control board 200 is mounted on the housing 100 and is electrically connected to the shadow soft light board 50, the matrix chip board 70 and the LOGO light board;

[0112] The heat dissipation plate 300 is mounted on the housing 100 and is attached to the power control board 200 .

[0113] It is further pointed out that the size of the heat sink 300 is 120mm*120mm*40mm, and its material is ADC12 aluminum alloy. It is made by a casting process and polished after forming. The weight of the heat sink 300 is 400g. The heat sink 300 is used to achieve heat dissipation and cooling of the power control board 200. The power control board 200 is used to provide power and signals to control the on and off timing of the first light source 20 and the second light source 80.

[0114] It should be noted that, in the present utility model, descriptions such as "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly defined. The terms "connected", "fixed", etc. should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0115] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in this field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0116] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope defined by the appended claims.

Claims

1. A 3D overlapping light-emitting structure, characterized in that: include: A light guide plate having a light guide surface A and a light guide surface B opposite to each other; a first light source connected to the light guide plate, with a light emitting surface of the first light source disposed opposite an end face of the light guide plate, wherein light emitted by the first light source enters the end face of the light guide plate at the end where the first light source is located, is totally reflected within the light guide plate, and is emitted horizontally from light guide surface A; A light shielding plate is located on one side of the light guide plate and is provided with a light shielding surface A and a light shielding surface B facing each other. The light shielding surface B is arranged opposite to the light guide surface A. A light emitting area is formed on the light shielding surface A by a laser engraving process. Light emitted from the light guide surface A enters through the light shielding surface B and is emitted from the light emitting area. The outer mask is located on one side of the sun visor, and is provided with a relative mask A surface and a mask B surface. The mask B surface is arranged opposite to the light-shielding surface A, wherein a part of the light emitted from the light-emitting area passes through the mask B surface and passes through the mask A surface, and the other part of the light is reflected by the mask B surface to the light-shielding surface A, and then reflected again to the mask B surface and passes through the mask A surface. Each time the light is reflected back and forth between the mask B surface and the light-shielding surface A, the light intensity when it passes through the mask A surface is lower than the light intensity when it passed through the mask A surface for the last time, thereby forming a 3D stereoscopic image with gradually decreasing light intensity on the mask A surface.

2. The 3D overlapping light-emitting structure according to claim 1, characterized in that: Part of the light emitted from the light-emitting area enters the mask surface B in a horizontal direction, and then passes through the mask surface A in a horizontal direction. Another part of the light is reflected horizontally by the mask surface B toward the shading surface A, and then reflected to the mask surface B, and passes through the mask surface A again in a horizontal direction. Among them, the light can form multiple reflections and transmissions between the mask surface B and the shading surface A, and the intensity of the light transmitted each time decreases step by step.

3. The 3D overlapping light-emitting structure according to claim 2, characterized in that: A layer of PVD reflective film is provided on the light-shielding surface A, and a layer of PVD semi-transparent and semi-reflective film is provided on the mask surface B. Part of the light incident on the mask surface B is transmitted through the mask surface A through the PVD semi-transparent and semi-reflective film, and the other part of the light is reflected onto the PVD reflective film on the light-shielding surface A, and then reflected again through the PVD reflective film onto the PVD semi-transparent and semi-reflective film on the mask surface B. Among them, the light can be reflected and transmitted multiple times between the PVD semi-transparent and semi-reflective film and the position on the PVD reflective film opposite to the light-emitting area, and the intensity of the light transmitted each time decreases step by step.

4. The 3D overlapping light-emitting structure according to claim 1, wherein: A first gap is formed between the light-guiding surface A and the light-shielding surface B, and the range of the first gap is between 1-5 mm.

5. The 3D overlapping light-emitting structure according to claim 1, characterized in that: A second gap is formed between the light-shielding surface A and the mask surface B, and the range of the second gap is between 3-5 mm.

6. The 3D overlapping light-emitting structure according to claim 1, characterized in that: The horizontal height of the end surface of the light shielding plate close to the first light source is lower than the horizontal height of the lowest point of the installation position of the first light source on the light guide plate.

7. The 3D overlapping light-emitting structure according to claim 1, characterized in that: The angle between the incident light from the first light source toward the end face of the light guide plate and the end face of the light guide plate is between 75° and 105°.

8. The 3D overlapping light-emitting structure according to claim 1, characterized in that: The first light source is incident on the end face of the light guide plate, and part of the light is incident on the light guide surface A in an oblique direction inside, and then reflected to the light guide surface B. The light is alternately incident and emitted between the light guide surface A and the light guide surface B, forming a zigzag light guide path, and the light emitted from the light guide surface A is emitted horizontally with the incident point of the light on the light guide surface A as the reference.

9. The 3D overlapping light-emitting structure according to claim 8, characterized in that: An optical microstructure is provided on the light guide surface B. The optical microstructure includes a plurality of optical patterns, wherein the optical pattern includes a concave-convex structure.

10. The 3D overlapping light-emitting structure according to claim 1, characterized in that: The light guide plate is made of PC or PMMA, and the radius of each optical pattern is 0.1-0.4 mm.

11. The 3D overlapping light-emitting structure according to claim 1, characterized in that: The material of the shading plate is PC or PMMA, wherein the shading surface A is provided with pinhole-free and light-proof PVD aluminum plating, and the aluminum plating reflectivity is not less than 85%.

12. The 3D overlapping light-emitting structure according to claim 1, wherein: The outer mask is made of PC material, wherein a hard layer or a PUR layer is set on the A side of the mask, and a pinhole-free and light-transmitting PVD aluminum plating is set on the B side of the mask, and the aluminum plating transmittance is 25%-35%.

13. The 3D overlapping light-emitting structure according to claim 1, wherein: Also includes: The shadow-folding soft light board is connected to the light guide plate through a heat riveting process, and the first light source is arranged on the shadow-folding soft light board; Multiple aluminum reinforcements are arranged in a U-shape, and the closed ends of the aluminum reinforcements are connected to the back of the double-shadow soft light panel through a bonding process; The matrix chip board is connected to the light guide plate through a screw connection process.

14. The 3D overlapping light-emitting structure according to claim 1, wherein: Also includes: A housing is provided with a first mounting cavity, wherein the light guide plate and the light shielding plate are mounted in the first mounting cavity, and an outer cover is connected to the housing and seals the opening of the first mounting cavity through the outer cover; A power control board is installed on the housing; The heat sink is installed on the housing and fits the power control board.

15. A 3D overlapping light-emitting structure, characterized in that: include: A light guide plate having a light guide surface A and a light guide surface B opposite to each other; a first light source connected to the light guide plate, with a light emitting surface of the first light source disposed opposite an end face of the light guide plate, wherein light emitted by the first light source enters the end face of the light guide plate at the end where the first light source is located, is totally reflected within the light guide plate, and is emitted horizontally from light guide surface A; A light shielding plate is located on one side of the light guide plate and is provided with a light shielding surface A and a light shielding surface B facing each other. The light shielding surface B is arranged opposite to the light guide surface A. A light emitting area is formed on the light shielding surface A by a laser engraving process. Light emitted from the light guide surface A enters through the light shielding surface B and is emitted from the light emitting area. Second light source; a light diffuser disposed opposite to the second light source, and comprising a light diffuser surface A and a light diffuser surface B, wherein the light emitted by the second light source is converted into a surface light source by the light diffuser; The outer mask is located on one side of the visor, and is provided with a relative mask A surface and a mask B surface. The mask B surface is respectively arranged opposite to the shading surface A and the uniform light surface A. Part of the light emitted from the light-emitting area passes through the mask B surface and then passes through the mask A surface, and the other part of the light is reflected by the mask B surface to the shading surface A and then reflected again to the mask B surface. Each time the light travels back and forth between the mask B surface and the shading surface A, the light intensity when it passes through the mask A surface is lower than the light intensity when it passed through the mask A surface for the last time, thereby forming a 3D stereoscopic image with gradually decreasing light intensity on the mask A surface.

16. The 3D overlapping light-emitting structure according to claim 15, characterized in that: A third gap is formed between the light-homogenizing surface A and the mask surface B, and the range of the third gap is between 1-3 mm.

17. The 3D overlapping light-emitting structure according to claim 15, wherein: Also includes: A housing is provided with a first mounting cavity and a second mounting cavity, wherein the light guide plate and the light shielding plate are mounted in the first mounting cavity, the second light source and the light diffuser are mounted in the second mounting cavity, and the cavity openings of the first mounting cavity and the second mounting cavity are sealed by an outer cover; A power control board is installed on the housing; The heat sink is installed on the housing and fits the power control board.

18. An exterior trim comprising the 3D overlapping luminous structure according to any one of claims 1 or 17.

19. The exterior trim according to claim 18, wherein: The exterior trim is one of a light-emitting grille, front and rear bumpers, side trims, front and rear through-lights, or a smart B-pillar.

20. A vehicle, characterized in that: Including the exterior trim described in claim 18.

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