Light reflection laminated glass, preparation method and vehicle comprising light reflection laminated glass

Abstract

The invention discloses light reflection laminated glass, a preparation method and a vehicle comprising the light reflection laminated glass. The light-reflecting laminated glass comprises an inner-layer light guide glass plate, a light-reflecting micron film layer, a bonding layer and an outer-layer glass plate which are sequentially stacked, the light reflection micron thin film layer comprises a micron polymer thin film layer and a light reflection structure formed on the surface of one side of the micron polymer thin film layer, the light reflection structure is in direct contact with the inner layer light guide glass plate, and the light reflection effect of the light reflection structure is facilitated. The preparation method provided by the invention can realize separation of a light reflection tissue manufacturing process and an inner-layer light guide glass forming process, so that the two processing processes do not interfere with each other, and the difficulty of a production process is greatly reduced.

Description

Light-reflecting laminated glass, preparation method and vehicle containing the same

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on May 13, 2022, with application number 202210518739.6 and invention name “Light-reflecting laminated glass, preparation method and vehicle containing the same”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present invention relates to the field of glass, and in particular to a light-reflecting laminated glass, a preparation method and a vehicle comprising the same. Background Art

[0003] Conventional automotive laminated glass primarily serves practical functions, but by adding a light-reflecting function, light-reflective laminated glass not only fulfills practical functions but also enhances the luminous atmosphere and lighting effects of the laminated glass. Applications are not limited to skylights, windshields, partitions, and more.

[0004] Summary of the Invention

[0005] The present invention aims to provide a light-reflective laminated glass, a preparation method, and a vehicle incorporating the same. The light-reflective structure in the light-reflective laminated glass of the present invention is in direct contact with the inner light-guiding glass sheet. This allows the light-reflective structure to effectively reflect light propagating through the inner light-guiding glass sheet back into the vehicle, creating a visible luminous effect within the light-reflective structure area, thereby providing an ambient or lighting function. Furthermore, the preparation method of the present invention separates the light-reflective structure fabrication process from the inner light-guiding glass forming process, eliminating interference between the two processes and significantly reducing the complexity of the production process. The light-reflective structure is then combined with the inner light-guiding glass during the lamination process.

[0006] In order to achieve the above objectives, the present invention adopts the following technical solutions:

[0007] In one aspect, the present invention provides a light-reflecting laminated glass, which comprises an inner light-guiding glass plate, a light-reflecting micron film layer, an adhesive layer and an outer glass plate stacked in sequence;

[0008] The light-reflective micron film layer includes a micron polymer film layer and a light-reflective structure formed on one surface of the micron polymer film layer. The light-reflective structure contacts the inner light-guiding glass plate.

[0009] The light-reflecting tissue is used to reflect light and can be set to different thicknesses, preferably 1 to 15 microns; by setting different thicknesses, the light-reflecting tissue area can have different visible light transmittances (TL), thereby achieving different visible light transmittance (TL) states of the light-reflecting tissue. Preferably, the visible light transmittance TL of the area with the light-reflecting tissue in the light-reflecting micron film layer is 0 to 85%, preferably 0, at which time the light-reflecting tissue has the best reflective effect. The area without the light-reflecting tissue is a transparent micron polymer film layer with a visible light transmittance TL ≥ 70%, preferably ≥ 80%, and more preferably ≥ 90%.

[0010] In addition, the light reflecting tissue may be patterned to achieve different patterned reflected light.

[0011] According to the light-reflective laminated glass of the present invention, preferably, the material of the light-reflective structure is selected from one or a combination of two or more light-reflective particles such as titanium dioxide, zinc oxide, aluminum oxide, zirconium oxide, lead sulfate, barium sulfate, and calcium carbonate; and the light-reflective particles are mixed with a solvent when preparing the light-reflective structure.

[0012] The micron polymer film layer is formed by extrusion blow molding, extrusion casting, extrusion stretching, etc., and then quenched. The light reflective structure is prepared thereon by printing or other methods. The micron polymer film can be laminated with any curved glass.

[0013] According to the light-reflective laminated glass of the present invention, preferably, the thickness of the micron polymer film layer is less than or equal to 100 microns, more preferably 20 to 30 microns, so as to better control the flow rate of the micron polymer film layer during thermal processing.

[0014] According to the light-reflective laminated glass of the present invention, the polymer in the micron-sized polymer film layer preferably comprises polyvinyl butyral. Furthermore, preferably, the material of the micron-sized polymer film layer also includes a plasticizer, with the plasticizer content being less than or equal to 5%, to reduce the fluidity of the micron-sized polymer film during thermal processing and prevent damage to the light-reflective tissue layer caused by the fluidization of the micron-sized polymer film.

[0015] According to the light-reflective laminated glass of the present invention, preferably, the micron polymer film layer and the inner light-guiding glass plate have an adhesive function, and the adhesive force is greater than or equal to 6 MPa, as tested according to the TL957 glass dynamic adhesive force test method.

[0016] According to the light-reflective laminated glass of the present invention, preferably, the bonding force between the micron polymer film layer and the bonding layer is greater than or equal to 6 MPa, as tested using the TL957 glass dynamic bonding force test method.

[0017] According to the light-reflective laminated glass of the present invention, preferably, the material of the adhesive layer is PVB or EVA, preferably PVB.

[0018] According to the light-reflective laminated glass of the present invention, the refractive index of the inner light-guiding glass plate is n, the refractive index of the light-reflective tissue is n1, and the refractive index of the micron polymer film layer is n2.

[0019] Preferably, the refractive index n of the inner light-guiding glass sheet is greater than the refractive index n1 of the light-reflecting structure, i.e., n>n1; and the refractive index n of the inner light-guiding glass sheet is greater than the refractive index n2 of the micron-polymer film layer, i.e., n>n2. Because the propagation path of light propagating through the inner light-guiding glass is disordered, some non-linear light will pass through the surface of the inner light-guiding glass layer. When the transmitted light encounters the micron-polymer film, and when n>n2, the light transitions from a denser medium to a less dense medium. If the incident angle of the light passing through the surface is greater than the critical angle, it will be totally reflected back into the inner light-guiding glass, allowing it to continue propagating through the inner light-guiding glass, thereby reducing light loss.

[0020] Further preferably, the refractive index of the light-reflecting tissue is greater than that of the micronized polymer film layer, i.e., n1>n2. When propagating light encounters the light-reflecting tissue, due to its preferably low visible light transmittance (TL), the light-reflecting tissue achieves total reflection of the propagating light while also providing diffuse reflection, redirecting the light back into the vehicle. This enhances the luminous atmosphere and lighting effect of the patterned layer formed by the light-reflecting tissue, thereby achieving the objectives of the present invention.

[0021] According to the light-reflecting laminated glass of the present invention, preferably, the outer glass plate is a double-layer laminated glass plate or a single-layer glass plate. Further, the outer glass plate can be an organic or inorganic, flat or curved double-layer laminated glass plate or a single-layer glass plate.

[0022] The light-reflective laminated glass according to the present invention is preferably inorganic high-transmittance glass or organic high-transmittance glass, preferably inorganic high-transmittance glass. The thickness of the inner light-guiding glass plate can be 0.7 to 3 mm, preferably 1.5 to 2.1 mm.

[0023] The light-reflective laminated glass according to the present invention preferably further includes a light source. In this case, the light-reflective laminated glass also has an illumination function, becoming an illuminating glass. The light source is disposed at the end of the inner light-guiding glass sheet. Depending on specific needs, the light source can be disposed in a partial or full region of the inner light-guiding glass sheet end. Light emitted by the light source enters the inner light-guiding glass sheet. The light propagates in a disordered manner within the inner light-guiding glass sheet. Some of the light propagates along the inner light-guiding glass sheet, while some of the light propagates to a distant location, reaching the micron-sized polymer film layer and undergoing total internal reflection. Further, some of the light propagates to the light-reflecting tissue, resulting in diffuse reflection or total internal reflection.

[0024] According to the light-reflective laminated glass of the present invention, preferably, the light source is an LED light emitting diode.

[0025] Another aspect of the present invention provides a vehicle comprising the above light-reflective laminated glass.

[0026] The light-reflecting laminated glass of the present invention can be used as vehicle glass. The inner light-guiding glass plate is located inside the vehicle, while the outer glass plate is located outside the vehicle, thereby providing interior lighting for the vehicle. When the light-guiding glass plate is located outside the vehicle, it can provide outward-facing fixed information prompts, status displays, and other lighting functions.

[0027] Another aspect of the present invention provides a method for preparing at least one light-reflective laminated glass, the method comprising the following steps:

[0028] preparing a light-reflecting micron thin film layer and an inner light-guiding glass plate respectively;

[0029] The inner light-guiding glass plate, the light-reflecting micron film layer, the adhesive layer and the outer glass plate are sequentially stacked, wherein the light-reflecting structure on the micron polymer film is ensured to be in direct contact with the inner light-guiding glass plate;

[0030] Firstly, pre-processing is performed by vacuuming under negative pressure and heating, and then high-pressure processing is performed by high pressure and heating to obtain the light-reflecting laminated glass.

[0031] The preparation method of the present invention separates the light-reflecting structure production process from the inner light-guiding glass forming process, so that the two processing processes do not interfere with each other, greatly reducing the difficulty of the production process.

[0032] Since most vehicle glass is used in a curved form and the light-reflecting structure needs to be in contact with the inner light-guiding glass plate, the existing process requires the light-reflecting structure to be produced on the inner light-guiding glass plate. The existing production methods mainly include: Method 1, directly printing the inorganic light-reflecting structure on the flat glass plate, and then curing it through high-temperature sintering at 400-700°C or curved surface forming and curing. This method can easily cause the light-reflecting structure to be damaged during the curing process and is also limited by the production process capacity, which greatly affects the difficulty of product production; Method 2, if it is used on a curved surface, the light-reflecting structure needs to be printed on the surface after the curved surface is formed. The existing printing technology cannot achieve the printing of large curved glass, which limits its scope of application. The present invention produces the light-reflecting structure on a micron polymer film. The production of the inner light-guiding glass plate is completely unrestricted. It only needs to be combined in the lamination process.

[0033] According to the preparation method of the present invention, preferably, the preparation method further comprises arranging a light source after the high pressure processing, and the light source is arranged and packaged for protection as required.

[0034] According to the preparation method of the present invention, preferably, the negative pressure vacuuming in the pre-processing treatment is -0.1 MPa, and the heating temperature is 115°C; the high pressure in the high pressure processing treatment is 1.2 MPa, and the heating temperature is 145°C.

[0035] According to the preparation method of the present invention, preferably, the micron polymer film layer in the light-reflecting micron film layer is formed by extrusion blow molding, extrusion casting or extrusion stretching, and then quenched; and the light-reflecting tissue is prepared by a printing method on the micron polymer film layer.

[0036] According to the preparation method of the present invention, preferably, the inner light-guiding glass can be inorganic high-transmittance glass or organic high-transmittance glass, preferably inorganic high-transmittance glass; the thickness of the inner light-guiding glass can be 0.7-3 mm, preferably 1.5-2.1 mm.

[0037] The inner light-guiding glass plate is prepared by the following process:

[0038] Cutting and trimming the inner light-guiding glass plate according to the required size;

[0039] The inner light-guiding glass plate is formed using a pre-made mold.

[0040] According to the preparation method of the present invention, preferably, the visible light transmittance (TL) of the micron polymer film in the light-reflecting micron film layer after thermal processing is ≥70%, preferably ≥80%, more preferably ≥90%;

[0041] The point-to-point relative position change of the micron polymer film in the light-reflecting micron film layer before and after the finished product is made is less than or equal to 50 μm, which can avoid a large shape change of the preset light-reflecting structure.

[0042] The reflective structure in the reflective laminated glass of this invention is in direct contact with the inner light-guiding glass sheet, preserving its reflective properties. The manufacturing method of this invention separates the reflective structure fabrication process from the inner light-guiding glass forming process, eliminating interference between the two processes and significantly reducing the complexity of the production process. The reflective structure and the inner light-guiding glass are then combined during the lamination process. Furthermore, this invention significantly reduces the thickness and plasticizer content of the micronized polymer film, preventing the reflective structure from being damaged by fluidity and ensuring its integrity. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] FIG1 is a schematic diagram of a light-reflecting micron thin film layer in a preferred embodiment of the present invention.

[0044] FIG2 is a cross-sectional view of a light-reflective micron-thin film layer in a preferred embodiment of the present invention.

[0045] FIG3 is a schematic diagram of a light-reflecting laminated glass with a light source in a preferred embodiment of the present invention.

[0046] FIG4 is a schematic diagram of a light-reflecting laminated glass with a light source in another preferred embodiment of the present invention.

[0047] Description of reference numerals:

[0048] 11. Micron polymer film;

[0049] 11.1, Adhesive layer;

[0050] 22. Light reflecting tissue;

[0051] 33. Outer glass panel;

[0052] 33.1, is the inner light-guiding glass plate;

[0053] 55. LED light-emitting diode. DETAILED DESCRIPTION

[0054] In order to explain the present invention more clearly, the present invention is further described below in conjunction with preferred embodiments. Those skilled in the art should understand that the following specific description is illustrative rather than restrictive and should not be used to limit the scope of protection of the present invention.

[0055] The present invention provides a light-reflecting laminated glass, which comprises an inner light-guiding glass plate, a light-reflecting micron film layer, an adhesive layer and an outer glass plate stacked in sequence.

[0056] The light-reflective micron film layer is shown in FIG1 and FIG2 , and includes a micron polymer film layer 11 and a light-reflective structure 22 formed on one surface of the micron polymer film layer. The light-reflective structure 22 may have a pattern as shown in FIG1 .

[0057] In another preferred embodiment, the light-reflecting laminated glass is further provided with a light source to achieve an illumination function, and can be used as vehicle glass. The inner light-conducting glass plate is located inside the vehicle, while the outer glass plate is located outside the vehicle, providing interior illumination. As shown in Figure 3, the light-reflecting laminated glass comprises an inner light-conducting glass plate 33.1, a light-reflecting micron-thin film layer (11 and 22), an adhesive layer 11.1, and an outer glass plate 33, which are stacked in sequence. The light-reflecting structure 22 in the light-reflecting micron-thin film layer is in direct contact with the inner light-conducting glass plate 33.1, which enhances the light-reflecting effect of the light-reflecting structure. The light source is an LED 55, which is positioned at the end face of the inner light-conducting glass plate 33.1. Light entering the inner light-conducting glass plate is disordered during propagation. Some light propagates along the inner light-conducting glass plate, while some propagates to the micron-thin polymer film layer, resulting in total internal reflection. Further light propagates to the light-reflecting structure, resulting in diffuse reflection or total internal reflection. This diffuse reflection is then reflected back into the vehicle, where the human eye perceives the light-reflecting structure as luminous.

[0058] The light-reflecting tissue 22 is used to reflect light and can be set to different thicknesses, preferably 1 to 15 microns. By setting different thicknesses, the light-reflecting tissue area can have different visible light transmittances (TL), achieving different visible light transmittance (TL) states of the light-reflecting tissue. Preferably, the visible light transmittance TL of the area containing the light-reflecting tissue in the light-reflecting micron film layer is 0 to 85%, preferably 0, at which time the light-reflecting tissue has the best reflective effect. The area without the light-reflecting tissue is a transparent micron polymer film layer with a visible light transmittance TL ≥ 70%, preferably ≥ 80%, and more preferably ≥ 90%. The material of the light-reflecting tissue includes inorganic light-reflecting particles selected from one or more of titanium dioxide, zinc oxide, aluminum oxide, zirconium oxide, lead sulfate, barium sulfate, calcium carbonate, etc.; further, the material of the light-reflecting tissue is composed of inorganic light-reflecting particles and a solvent mixture.

[0059] The micronized polymer film layer 11 is formed from a polymer (preferably polyvinyl butyral) by extrusion blow molding, extrusion casting, or extrusion stretching, followed by quenching, and is then printed to form the light-reflecting tissue 22. The thickness of the micronized polymer film layer 11 is 100 microns or less, more preferably 20 to 30 microns. Furthermore, the plasticizer content in the micronized polymer film layer 11 is controlled to be 5% or less to reduce the fluidity of the micronized polymer film 11 during thermal processing, preventing damage to the light-reflecting tissue layer 22 caused by the flow of the micronized polymer film 11 and thus ensuring its integrity.

[0060] The outer glass plate 33 can be a double-layer laminated glass plate or a single-layer glass plate. The inner light-guiding glass plate 33.1 can be inorganic high-transmittance glass or organic high-transmittance glass, preferably inorganic high-transmittance glass. The thickness can be 0.7 to 3 mm, preferably 1.5 to 2.1 mm. The preparation process is as follows:

[0061] 1) Cut and trim the inner light guide glass plate according to the required size;

[0062] 2) Using a pre-made available mold, the inner light guide glass plate is molded.

[0063] The adhesive layer 11.1 is made of PVB or EVA material, preferably PVB.

[0064] The bonding strength between the micron polymer film layer 11 and the adhesive layer 11.1 is greater than or equal to 6 MPa. The micron polymer film layer 11 and the inner light-guiding glass plate 33.1 have a bonding function, and the bonding strength is greater than or equal to 6 MPa. Both are tested according to the TL957 glass dynamic bonding strength test method.

[0065] The refractive index of the inner light-guiding glass plate 33 . 1 is n, the refractive index of the light-reflecting structure 22 is n1 , and the refractive index of the micron polymer film layer 11 is n2 .

[0066] The refractive index n of the inner light-guiding glass plate 33.1 is greater than the refractive index n1 of the light-reflecting structure 22, i.e., n>n1. The refractive index n of the inner light-guiding glass plate 33.1 is greater than the refractive index n2 of the micron-sized polymer film layer 11, i.e., n>n2. The refractive index of the light-reflecting structure 22 is greater than the refractive index of the micron-sized polymer film layer 11, i.e., n1>n2.

[0067] The above light-reflecting laminated glass is prepared by the following steps:

[0068] 1) preparing a light-reflecting micron film and an inner light-guiding glass plate 33.1 respectively;

[0069] 2) sequentially laminating the inner light-guiding glass plate 33.1, the light-reflecting micronized film layer, the adhesive layer 11.1, and the outer glass plate 33, ensuring that the light-reflecting structure 22 on the micronized polymer film 11 is in direct contact with the inner light-guiding glass plate 33.1;

[0070] 3) Pre-processing is first performed by vacuuming at a negative pressure of -0.1 MPa and heating at 115° C., and then high-pressure processing is performed by high pressure of 1.2 MPa and heating at 145° C.; and the light-reflecting laminated glass is obtained.

[0071] 4) Arrange the LEDs 55 according to the desired vehicle glass structure.

[0072] The light-reflecting micron thin film layers (11 and 22) are prepared by the following process:

[0073] The micron polymer film layer 11 is formed by extrusion blow molding, extrusion casting or extrusion stretching, and then quenched; then the light reflective structure 22 is prepared on the micron polymer film layer 11 by printing or other methods.

[0074] The inner light-guiding glass plate 33.1 is prepared by the following process:

[0075] 1) Cut and trim the light guide glass according to the required size;

[0076] 2) Using a prefabricated mold, the light-guiding glass is molded to ultimately form the required inner light-guiding glass plate 33.1.

[0077] The visible light transmittance (TL) of the micron polymer film in the light-reflecting micron film layer after thermal processing is greater than or equal to 90%; the point-to-point relative position change of the micron polymer film in the light-reflecting micron film layer before and after thermal processing is less than or equal to 50μm.

[0078] As shown in FIG. 4 , in another preferred embodiment, the light source 55 is disposed and encapsulated in laminated glass as required.

[0079] Application Example 1:

[0080] This application example is prepared according to the above method for preparing light-reflective laminated glass. The outer dimensions of the product are 1000mm×500mm, where:

[0081] The inner light-guiding glass plate 33.1 is made of 2.0 mm high-transparency glass with a visible light transmittance of ≥90% and a refractive index n=1.52;

[0082] The thickness of the micron polymer film 11 is 25 μm, the visible light transmittance in the light scattering tissue 22 region is (TL=84%), and the refractive index n1 is 1.48;

[0083] The adhesive layer 11.1 uses 0.76 mm PVB material;

[0084] The outer glass plate 33 is made of FG18 4.0 tempered glass;

[0085] During the above process of laminating the micron polymer film layers, the surface with the light-reflecting structure is brought into contact with the inner light-guiding glass plate 33.1.

[0086] The light source LED light emitting diodes 55 are arranged as shown in FIG. 4 .

[0087] The brightness of the light reflective tissue area was tested on one side of the inner light guide glass plate using a Konica Minolta point spectroradiometer. The brightness of the specified area was measured to be 8cd / m 2 ~25cd / m 2 At the same time, the brightness of the designated area of ​​the non-light-reflecting tissue was tested and the brightness value was 0.25cd / m 2 ~1.3cd / m 2 The brightness values ​​are obtained only from the test of this embodiment and are not intended to limit the content of this application. If any of the conditions are changed, the brightness values ​​will fluctuate.

[0088] Application Example 2:

[0089] This application example is prepared according to the above method for preparing light-reflective laminated glass. The outer dimensions of the product are 1000mm×500mm, where:

[0090] The inner light guide glass plate 33.1 is made of 1.8mm high-transparency glass with a visible light transmittance of ≥90% and a refractive index n=1.51;

[0091] The thickness of the micron polymer film 11 is 25 μm, the visible light transmittance of the light scattering tissue 22 region is (TL=80.5%), and the refractive index n1 is 1.48;

[0092] Adhesive layer 11.1, using 0.38mm PVB material;

[0093] The outer glass plate 33 is made of 2.1 gray double-layer laminated glass.

[0094] During the above process of laminating the micron polymer film layers, the surface with the light-reflecting structure is brought into contact with the inner light-guiding glass plate 33.1.

[0095] The light source LED light emitting diodes 55 are arranged as shown in FIG. 4 .

[0096] The brightness of the light reflective tissue area was tested on one side of the inner light guide glass plate using a Konica Minolta point spectroradiometer. The brightness of the specified area was measured to be 6.5 cd / m 2 ~22cd / m 2 interval, and at the same time, the brightness of the designated area of ​​the non-light-reflecting tissue was tested, and the brightness value was 0.2cd / m 2 ~1.2cd / m 2 The brightness values ​​are obtained only from the test of this embodiment and are not intended to limit the content of this application. If any of the conditions are changed, the brightness values ​​will fluctuate.

[0097] Comparative Example 1

[0098] According to the product size and structure of Application Example 1, the following comparative examples were made:

[0099] In this comparative example, the inner light-guiding glass plate 33.1 is made of 2.0 mm high-transparency glass with a visible light transmittance of ≥90% and a refractive index n of 1.52.

[0100] The thickness of the micron polymer film 11 is 25 μm, the visible light transmittance of the light scattering tissue 22 region is (TL=80.5%), and the refractive index n1 is 1.48;

[0101] The adhesive layer 11.1 uses 0.76 mm PVB material;

[0102] The outer glass plate 33 is made of FG18 4.0 tempered glass;

[0103] During the above lamination of the micron polymer film layers, the surface with the light reflective tissue is not in contact with the inner light guiding glass plate 33 . 1 , that is, the light reflective tissue 22 and the inner light guiding glass plate 33 . 1 are separated by the micron polymer film 11 .

[0104] The light source LED light emitting diodes 55 are arranged as shown in FIG. 4 .

[0105] The brightness of the light reflective tissue area was tested on one side of the inner light guide glass plate using a Konica Minolta point spectroradiometer. The brightness of the predetermined area was measured to be 0.45 cd / m 2 ~1.8cd / m 2 At the same time, the brightness of the designated area of ​​the non-light-reflecting tissue was tested and the brightness value was 0.25cd / m 2 ~1.3cd / m 2 From the above comparative structures, it can be concluded that during the lamination process of the product structure of the present invention, it is necessary to ensure that the prepared light-reflecting tissue is in contact with the inner light-guiding glass plate, so as to achieve the luminous atmosphere and lighting effect of the light-reflecting tissue and achieve the purpose of the present invention.

[0106] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. A light-reflecting laminated glass, characterized in that: The light-reflective laminated glass comprises an inner light-guiding glass plate, a light-reflective micron film layer, an adhesive layer and an outer glass plate stacked in sequence; The light-reflective micron film layer includes a micron polymer film layer and a light-reflective structure formed on one surface of the micron polymer film layer. The light-reflective structure contacts the inner light-guiding glass plate.

2. The light-reflecting laminated glass according to claim 1, characterized in that: The thickness of the light reflecting tissue is 1 to 15 microns.

3. The light-reflecting laminated glass according to claim 1, characterized in that: The visible light transmittance TL of the region having the light reflective tissue in the light reflective micron thin film layer is 0-85%, and the visible light transmittance TL of the region without the light reflective tissue is ≥70%.

4. The light-reflecting laminated glass according to claim 1, characterized in that: The light reflecting tissue has a pattern.

5. The light-reflecting laminated glass according to claim 1, characterized in that: The material of the light reflecting tissue is selected from one or a combination of two or more of titanium dioxide, zinc oxide, aluminum oxide, zirconium oxide, lead sulfate, barium sulfate, and calcium carbonate.

6. The light-reflecting laminated glass according to claim 1, characterized in that: The thickness of the micron polymer film layer is less than or equal to 100 microns.

7. The light-reflecting laminated glass according to claim 1, characterized in that: The polymer in the micron polymer film layer includes polyvinyl butyral.

8. The light-reflecting laminated glass according to claim 7, characterized in that: The material of the micron polymer film layer also includes a plasticizer, and the content of the plasticizer is less than or equal to 5%.

9. The light-reflecting laminated glass according to claim 1, wherein: The bonding force between the micron polymer film layer and the inner light-guiding glass plate is greater than or equal to 6 MPa.

10. The light-reflecting laminated glass according to claim 1, wherein: The bonding force between the micron polymer film layer and the bonding layer is greater than or equal to 6 MPa.

11. The light-reflecting laminated glass according to claim 1, wherein: The refractive index of the inner light-guiding glass plate is greater than the refractive index of the light-reflecting tissue.

12. The light-reflecting laminated glass according to claim 11, characterized in that: The refractive index of the inner light-guiding glass plate is greater than the refractive index of the micron polymer film layer.

13. The light-reflecting laminated glass according to claim 12, characterized in that: The refractive index of the light reflecting tissue is greater than the refractive index of the micron polymer film layer.

14. The light-reflecting laminated glass according to any one of claims 1 to 13, characterized in that: The light-reflecting laminated glass further includes a light source, which is disposed at the end of the inner light-guiding glass plate.

15. A vehicle, characterized in that: The vehicle comprises the light-reflective laminated glass according to any one of claims 1 to 14.

16. A method for preparing the light-reflective laminated glass according to any one of claims 1 to 14, characterized in that: The preparation method comprises the following steps: preparing a light-reflecting micron thin film layer and an inner light-guiding glass plate respectively; The inner light-guiding glass plate, the light-reflecting micron film layer, the adhesive layer and the outer glass plate are sequentially stacked, wherein the light-reflecting structure on the micron polymer film is ensured to be in direct contact with the inner light-guiding glass plate; Firstly, pre-processing is performed by vacuuming under negative pressure and heating, and then high-pressure processing is performed by high pressure and heating to obtain the light-reflecting laminated glass.

17. The preparation method according to claim 16, characterized in that The preparation method further comprises arranging a light source after the high pressure processing.

18. The preparation method according to claim 16, characterized in that The micron polymer film layer in the light-reflecting micron film layer is formed by extrusion blow molding, extrusion casting or extrusion stretching, and then quenched; the light-reflecting structure is prepared by a printing method on the micron polymer film layer.

19. The preparation method according to claim 16, characterized in that The point-to-point relative position change of the micron polymer film in the light-reflecting micron film layer before and after the finished product is made is less than or equal to 50 μm.

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