Front windshield and vehicle

Abstract

The invention relates to the technical field of vehicles, and provides a front windshield and a vehicle, the front windshield comprises a glass body and a light-transmitting layer structure, and the glass body comprises an outer-layer glass substrate and an inner-layer glass substrate which are oppositely arranged; the light-transmitting layer structure is clamped between the outer-layer glass substrate and the inner-layer glass substrate, and the cross sectional area of the light-transmitting layer structure is gradually reduced in the direction from the upper end to the lower end. According to the method, the ghosting phenomenon can be reduced or eliminated, the image information is clearer, the visual field effect of a driver is effectively improved, and therefore the driving safety and comfort are improved.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular provides a front windshield and a vehicle. Background Art

[0002] At present, drivers need to pay attention to road conditions, vehicle conditions, and the status of people in the car when driving. Traditional driving information mainly comes from the dashboard, which requires drivers to look down, increasing driving risks. With the integration of display technology and automotive technology, the front windshield has become an important carrier for displaying driving information. Driving information such as images and text is projected on the front windshield through projection equipment to meet the assisted driving function of smart cars.

[0003] However, the existing front windshield is generally a double-layer structure, and the refraction angle of the projected light is smaller than the incident angle each time. In this way, after two refractions through the double-layer glass, two images will appear on the glass. The two images are slightly different in position, resulting in a virtual image, i.e., ghosting. This not only affects the display effect, but also interferes with the driver's attention and judgment, resulting in lower driving safety and comfort. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a front windshield and a vehicle, aiming to solve the problem of double images occurring in the existing front windshield, resulting in low driving safety and comfort.

[0005] To achieve the above purpose, the technical solution adopted in this application is:

[0006] The present application provides a front windshield, comprising:

[0007] The glass body comprises an outer glass substrate and an inner glass substrate which are arranged opposite to each other;

[0008] The light-transmitting layer structure is sandwiched between the outer glass substrate and the inner glass substrate, and the cross-sectional area of ​​the light-transmitting layer structure gradually decreases from the upper end to the lower end.

[0009] The front windshield provided by the present application can ensure the projection imaging effect of the glass body by means of a light-transmitting layer structure sandwiched between the inner and outer glass substrates, thereby achieving the purpose of displaying information images; the light-transmitting layer structure gradually reduces its cross-sectional area from the upper end to the lower end, that is, it is a wedge-shaped structure that is thick at the top and thin at the bottom, which can change the refraction path of light when passing through the inner and outer glass substrates, so that the images of the light after the two refraction angle changes are overlapped as much as possible, reducing or eliminating the ghosting phenomenon, making the image information clearer, and effectively improving the driver's field of vision, thereby improving driving safety and comfort.

[0010] Optionally, the light-transmitting layer structure includes:

[0011] A liquid crystal color-changing film layer is provided between the outer glass substrate and the inner glass substrate;

[0012] A first adhesive layer is provided between the outer glass substrate and the liquid crystal color-changing film layer;

[0013] A second adhesive layer is provided between the inner glass substrate and the liquid crystal color-changing film layer;

[0014] Wherein, the cross-sectional area of ​​the first adhesive layer and / or the second adhesive layer gradually decreases from the upper end to the lower end.

[0015] Optionally, the glass body has a sunshade area and a display area;

[0016] The liquid crystal color-changing film layer includes a first liquid crystal color-changing film and a second liquid crystal color-changing film, wherein the first liquid crystal color-changing film corresponds to the sunshade area, and the second liquid crystal color-changing film corresponds to the display area.

[0017] Optionally, first bus bars are provided on both sides of the first liquid crystal color-changing film, and each of the first bus bars is provided with a first wire connector;

[0018] Second bus bars are provided on both sides of the second liquid crystal color-changing film, and each of the second bus bars is provided with a second wire connector;

[0019] The first wire connector and the second wire connector are both used to electrically connect to a vehicle-mounted controller, and the vehicle-mounted controller is used to control the on and off of the first liquid crystal color-changing film and the second liquid crystal color-changing film.

[0020] Optionally, the sunshade area is provided with an accessory mounting bracket.

[0021] Optionally, the front windshield further includes:

[0022] The first ink layer is disposed on a side of the outer glass substrate adjacent to the first adhesive layer.

[0023] Optionally, the front windshield further includes:

[0024] The second ink layer is arranged on the side of the inner glass substrate facing away from the second adhesive layer.

[0025] Optionally, the front windshield further includes:

[0026] The heating layer is arranged on the side of the second ink layer facing away from the inner glass substrate, and the heating layer includes a first heating part corresponding to the vehicle wiper, the first heating part is electrically connected to a heating connector, and the heating connector is used to electrically connect to the vehicle controller.

[0027] Optionally, the first adhesive layer and / or the second adhesive layer is a polyvinyl butyral film layer.

[0028] The present application also provides a vehicle, comprising: a vehicle body and the above-mentioned front windshield, wherein the front windshield is arranged on the vehicle body.

[0029] The vehicle provided in the present application can reduce or eliminate the ghosting phenomenon through the above-mentioned front windshield, making the image information projected onto the glass clearer, effectively improving the driver's field of vision, thereby improving driving safety and comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 One of the structural schematic diagrams of the front windshield provided in the embodiment of the present application;

[0032] Figure 2 The second structural schematic diagram of the front windshield provided in the embodiment of the present application;

[0033] Figure 3 The third structural schematic diagram of the front windshield provided in the embodiment of the present application;

[0034] Figure 4 A schematic diagram of a light-transmitting layer structure provided in an embodiment of the present application;

[0035] Figure 5 A schematic diagram of the refraction principle of the front windshield provided in an embodiment of the present application.

[0036] Among them, the reference numerals in the figure are:

[0037] 1. Glass body; 2. Translucent layer structure; 3. Outer glass matrix; 4. Inner glass matrix;

[0038] 5. Liquid crystal color-changing film layer; 6. First adhesive layer; 7. Second adhesive layer; 8. Sunshade area;

[0039] 9. Display area; 10. First liquid crystal color-changing film; 11. Second liquid crystal color-changing film; 12. First bus bar;

[0040] 13. First wire connector; 14. Second bus bar; 15. Second wire connector;

[0041] 16. accessory mounting bracket; 17. first ink layer; 18. second ink layer; 19. heating layer;

[0042] 20. First heating part; 21. Heating joint; 22. Second heating part. DETAILED DESCRIPTION

[0043] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0044] In the description of the embodiments of the present application, it needs to be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0046] In the embodiments of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; 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. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0047] According to the embodiment of the first aspect of the present application, referring to Figure 1-Figure 5 As shown, the present application provides a front windshield, comprising: a glass body 1 and a light-transmitting layer structure 2. The glass body 1 comprises an outer glass substrate 3 and an inner glass substrate 4 arranged opposite to each other; the light-transmitting layer structure 2 is sandwiched between the outer glass substrate 3 and the inner glass substrate 4, and the cross-sectional area of ​​the light-transmitting layer structure 2 gradually decreases from the upper end to the lower end.

[0048] In this embodiment of the present application, the glass body 1 is composed of an outer glass substrate 3 and an inner glass substrate 4, which form the basic frame of the front windshield and provide necessary protection and transparency. It can be understood that the outer glass substrate 3 is the glass facing the outside of the vehicle, and the inner glass substrate 4 is the glass facing the inside of the vehicle. That is, the glass body 1 of the present application is a laminated glass.

[0049] The light-transmitting layer structure 2 is the key part of the present application. It is sandwiched between the outer glass substrate 3 and the inner glass substrate 4, which can ensure the projection imaging effect of the glass body 1 and achieve the purpose of displaying information images. In addition, unlike the light-transmitting layer structure 2 that maintains a uniform thickness, the light-transmitting layer structure 2 in the embodiment of the present application gradually decreases in cross-sectional area from top to bottom, forming a wedge-shaped structure that is thick on the top and thin on the bottom. For example, the cross-sectional area of ​​the light-transmitting layer structure 2 can be a right-angled trapezoid, an isosceles trapezoid, a triangle, etc. The specific design can be adjusted according to actual needs.

[0050] like Figure 5 As shown, when light passes through different media, it will be refracted. In a traditional double-layer windshield, since the inner and outer glass substrates are parallel, the incident angle a is greater than the refraction angle b, the refraction angle b is equal to the incident angle c, and the incident angle c is greater than the refraction angle d. The refraction angle of the light is smaller than the incident angle each time. The light is refracted when it enters the glass substrate for the first time, and then refracted again when it leaves the glass substrate for the second time. These two refractions will cause the light path to change, and eventually cause the image to deviate. In this way, after two refractions, two images will appear on the glass substrate, forming a double image.

[0051] To this end, the light-transmitting layer structure 2 in the embodiment of the present application adopts a wedge-shaped design with a thick top and a thin bottom, which can change the refraction path of the light when passing through the inner and outer glass substrates. Specifically, this wedge-shaped structure can adjust the relative inclination angle between the inner and outer glass substrates, so that the refraction angle of the light when it first enters and finally leaves the glass substrate is properly compensated, making up for the deviation of the refracted light. This means that even if the light undergoes two refractions, due to the special design of the light-transmitting layer structure 2, the final direction of the light can be better aligned, so that the images of the light after the two refraction angle changes are as close as possible to each other, thereby reducing or eliminating the ghosting phenomenon.

[0052] Therefore, the windshield provided in the embodiment of the present application optimizes the refraction path of light by cleverly utilizing the wedge-shaped structure of the light-transmitting layer, effectively solving the ghosting problem existing in the traditional design, making the information projected on the windshield clearer and more stable, significantly improving the quality of displayed information, and not interfering with the driver's sight. This is of great significance for improving driving safety and comfort, especially in complex traffic environments, where clear information display can help drivers react faster and reduce the occurrence of traffic accidents.

[0053] According to one embodiment of the present application, referring to Figure 4 As shown, due to different installation angles of the vehicle's glass, the imaging angle is also different, so the light-transmitting layer structure 2 can be designed with different wedge angles α for matching, so as to reduce or eliminate the ghosting phenomenon and meet the use requirements. Specifically:

[0054] tanα=e / f;

[0055] Wherein, α is the wedge angle of the light-transmitting layer structure 2 , e is the thickness increase of the light-transmitting layer structure 2 , and f is the length of the light-transmitting layer structure 2 .

[0056] According to one embodiment of the present application, referring to Figure 2 and Figure 3 As shown, the light-transmitting layer structure 2 includes: a liquid crystal color-changing film layer 5, a first adhesive layer 6 and a second adhesive layer 7, the liquid crystal color-changing film layer 5 is arranged between the outer glass substrate 3 and the inner glass substrate 4; the first adhesive layer 6 is arranged between the outer glass substrate 3 and the liquid crystal color-changing film layer 5; the second adhesive layer 7 is arranged between the inner glass substrate 4 and the liquid crystal color-changing film layer 5; the cross-sectional area of ​​the first adhesive layer 6 and / or the second adhesive layer 7 gradually decreases from the upper end to the lower end.

[0057] In this embodiment of the present application, the liquid crystal color-changing film layer 5 is located between the outer glass substrate 3 and the inner glass substrate 4, and is a key component for realizing the color-changing function. The liquid crystal color-changing film layer 5 can control the arrangement of liquid crystal particles by applying an external voltage, thereby changing the light transmittance of the film layer.

[0058] Specifically, when there is no external voltage, the optical axis orientation of the liquid crystal particles of the liquid crystal color-changing film layer 5 is random and disordered, and the light transmittance of the glass is extremely low, which can achieve the purpose of shielding privacy. When there is an external voltage, the optical axis of the liquid crystal particles is arranged perpendicular to the surface of the film, that is, consistent with the direction of the electric field, the incident light will not be scattered, the film is transparent, and the light transmittance of the glass is extremely high, which can further improve the image clarity and avoid affecting the field of view.

[0059] The first adhesive layer 6 is located between the outer glass substrate 3 and the liquid crystal color-changing film layer 5, and is used to fix the liquid crystal color-changing film layer 5 and ensure its close combination with the outer glass substrate 3; the second adhesive layer 7 is located between the inner glass substrate 4 and the liquid crystal color-changing film layer 5, and is also used to fix the liquid crystal color-changing film layer 5 and ensure its close combination with the inner glass substrate 4. The adhesive layer structure can enhance the bonding strength between the two glass substrates, improve the overall impact resistance, and thus improve the safety of use.

[0060] The cross-sectional area of ​​the first adhesive layer 6 and / or the second adhesive layer 7 gradually decreases from the upper end to the lower end, so that the light-transmitting layer structure 2 can form a wedge-shaped structure as a whole. The wedge-shaped design can adjust the refraction path of light between the inner and outer glass substrates, reduce or eliminate ghosting, make the image clearer, and improve driving safety and comfort.

[0061] For example, the cross-sectional shape of the first adhesive layer 6 may be a rectangle, and the cross-sectional shape of the second adhesive layer 7 may be a right trapezoid or a right triangle; or, the cross-sectional shape of the first adhesive layer 6 may be a right trapezoid or a right triangle, and the cross-sectional shape of the second adhesive layer 7 may be a rectangle; or, the cross-sectional shape of the first adhesive layer 6 and the second adhesive layer 7 may both be right trapezoids or right triangles.

[0062] Therefore, the embodiment of the present application effectively solves the ghosting problem existing in the traditional front windshield by comprehensively using the liquid crystal color changing technology and the wedge-shaped adhesive layer, and adds the color changing function to improve the overall performance of the front windshield. These improvements not only improve the driving experience, but also significantly enhance the safety and comfort of driving, providing strong support for the development of smart cars.

[0063] According to one embodiment of the present application, referring to Figure 1-Figure 3 As shown, the glass body 1 has a sunshade area 8 and a display area 9; the liquid crystal color-changing film layer 5 includes a first liquid crystal color-changing film 10 and a second liquid crystal color-changing film 11, the first liquid crystal color-changing film 10 corresponds to the sunshade area 8, and the second liquid crystal color-changing film 11 corresponds to the display area 9.

[0064] In this embodiment of the present application, the sunshade area 8 is located at the upper part of the front windshield, mainly used to block the sunlight and prevent the sunlight from directly hitting the driver's eyes. The display area 9 is located at the lower part of the front windshield, mainly used to display driving information, such as navigation, speed, warnings, etc.

[0065] The first liquid crystal color-changing film 10 corresponds to the sunshade area 8. By controlling the on and off state of the first liquid crystal color-changing film 10, the light transmittance of the sunshade area 8 can be adjusted. Specifically, when the first liquid crystal color-changing film 10 is in the off state, the optical axis orientation of its liquid crystal particles is random, presenting a disordered state, extremely low light transmittance, darkening the color, and the light transmittance can be as low as 1%. This can effectively block the sunlight and prevent the sunlight from directly hitting the driver's eyes, achieving an efficient sunshade effect, directly replacing the traditional sun visor, avoiding the trouble of manually flipping the sun visor, and also avoiding the use of the sun visor to affect the driver's observation of road conditions and improve driving comfort.

[0066] The second liquid crystal color-changing film 11 corresponds to the display area 9. By controlling the on and off state of the second liquid crystal color-changing film 11, the transmittance of the display area 9 can be adjusted. Specifically, when the second liquid crystal color-changing film 11 is in the on state, the optical axis of its liquid crystal particles is arranged perpendicular to the film surface, consistent with the direction of the electric field, the transmittance is extremely high, the color becomes lighter, making the projection information clearer, and does not affect the observation of the surrounding driving environment. The driver can directly observe the corresponding driving information without lowering his head, improving driving safety.

[0067] Therefore, the embodiment of the present application realizes the partition control of the front windshield by dividing the liquid crystal color-changing film layer 5 into the upper first liquid crystal color-changing film 10 and the lower second liquid crystal color-changing film 11, thereby meeting the different usage requirements of users. These improvements provide new technical support for the development of smart cars and enhance the driving experience of users.

[0068] According to one embodiment of the present application, referring to Figure 1 and Figure 3 As shown, first bus bars 12 are provided on both sides of the first liquid crystal color-changing film 10, and each first bus bar 12 is provided with a first wire connector 13; second bus bars 14 are provided on both sides of the second liquid crystal color-changing film 11, and each second bus bar 14 is provided with a second wire connector 15; the first wire connector 13 and the second wire connector 15 are both used to electrically connect to a vehicle-mounted controller (not shown in the figure), and the vehicle-mounted controller is used to control the power on and off of the first liquid crystal color-changing film 10 and the second liquid crystal color-changing film 11.

[0069] Specifically, the busbar and the corresponding wire connector can be connected by welding, and the wire connector extends outside the glass substrate and is used to electrically connect the external vehicle controller. The user can send control instructions through the electronic button or voice function of the vehicle controller, and the control instructions are transmitted to the corresponding liquid crystal color-changing film through the corresponding wire connector and the busbar, thereby controlling the power-on and power-off state of the liquid crystal color-changing film, so that the glass presents different light transmittances and achieves the purpose of color change. With this design, the driver can easily adjust the state of the liquid crystal color-changing film, simplify the operation process, and improve the user experience.

[0070] According to one embodiment of the present application, referring to Figure 1 and Figure 3 As shown, the first bus bar 12 is provided on both sides of the first liquid crystal color-changing film 10, and the distance between the first bus bar 12 and the edge of the glass body 1 is controlled between 3 mm and 8 mm, preferably, the distance is 6 mm. Such a design can reduce the influence of the first bus bar 12 on the overall visual effect of the front windshield on the basis of ensuring the reliability of the electrical connection, and keep the front windshield neat and beautiful.

[0071] According to one embodiment of the present application, referring to Figure 1 and Figure 3As shown, the second bus bar 14 is provided on both sides of the left and right sides of the second liquid crystal color-changing film 11, and the distance between the second bus bar 14 and the edge of the glass body 1 is controlled between 3 mm and 8 mm, preferably, the distance is 6 mm. Such a design can reduce the influence of the second bus bar 14 on the overall visual effect of the front windshield on the basis of ensuring the reliability of the electrical connection, and keep the front windshield neat and beautiful.

[0072] According to one embodiment of the present application, referring to Figure 1 As shown, the sunshade area 8 of the glass body 1 is provided with an accessory mounting bracket 16 .

[0073] In this embodiment of the present application, the accessory mounting bracket 16 is arranged inside the sunshade area 8 on the upper part of the glass body 1, and is used to install various accessories, such as cameras, temperature and humidity sensors, rearview mirrors, etc. Integrating various accessories in the sunshade area 8 of the front windshield not only saves space, but also maintains the overall aesthetics of the front windshield.

[0074] The camera can monitor the road conditions in real time and provide image data to the onboard controller. This data can be used to implement a variety of road assisted driving functions, such as lane keeping, forward collision warning, pedestrian detection, etc. Through these functions, potential dangers can be discovered in advance, helping the driver to take timely measures and improve driving safety.

[0075] The temperature and humidity sensor can monitor the temperature and humidity information inside and outside the car in real time. These data can help the driver understand the current environmental conditions. For example, in high or low temperature conditions, the driver can be reminded to turn on the air conditioning system to improve driving comfort.

[0076] The rearview mirror can provide dynamic and static environmental information inside and behind the vehicle. Through the rearview mirror, the driver can better understand the situation around the vehicle, especially when reversing or changing lanes, it can provide additional visual support, reduce blind spots, and improve driving safety.

[0077] Therefore, the embodiment of the present application can integrate various sensors and auxiliary equipment through the accessory mounting bracket 16 to realize various functions such as road assisted driving, environmental monitoring and all-round observation, thereby improving driving safety and comfort.

[0078] According to one embodiment of the present application, referring to Figure 3 As shown, the front windshield further includes: a first ink layer 17 , and the first ink layer 17 is arranged on a side of the outer glass substrate 3 adjacent to the first adhesive layer 6 .

[0079] Specifically, the first ink layer 17 can be a ceramic ink layer with good shielding and weather resistance. The main function of the first ink layer 17 is to shield the bus bar from the outside of the glass to prevent the bus bar from forming obvious lines on the outside of the front windshield, thereby improving the overall aesthetics of the front windshield.

[0080] According to one embodiment of the present application, referring to Figure 3 As shown, the front windshield further includes: a second ink layer 18 , which is arranged on a side of the inner glass substrate 4 facing away from the second adhesive layer 7 .

[0081] Specifically, the second ink layer 18 can be a ceramic ink layer with good shielding and weather resistance. The main function of the second ink layer 18 is to shield the bus bar from the inside of the glass to prevent the bus bar from forming obvious lines on the inside of the windshield, thereby improving the overall aesthetics of the windshield.

[0082] In addition, the ceramic ink layer can be set to black or have patterns of different colors according to user needs. The pattern will not fall off or fade, which increases the strength of the glass body. At the same time, the ceramic ink layer can also enhance its wear resistance. Since the dust on the ceramic ink layer is easy to clean, the cleanliness of the glass body can be improved.

[0083] According to one embodiment of the present application, referring to Figure 1 and Figure 3 As shown, the front windshield also includes: a heating layer 19, the heating layer 19 is arranged on the side of the second ink layer 18 facing away from the inner glass substrate 4, and the heating layer 19 includes a first heating part 20 corresponding to a vehicle-mounted wiper (not shown in the figure), the first heating part 20 is electrically connected to a heating connector 21, and the heating connector 21 is used to electrically connect to the vehicle-mounted controller.

[0084] Specifically, the heating layer 19 can be a silver paste heating layer, which has good electrical conductivity and heating performance. The first heating portion 20 of the heating layer 19 is welded with a heating connector 21 by a wire, and the heating connector 21 is electrically connected to the vehicle controller.

[0085] By controlling the heating state of the first heating portion 20 of the heating layer 19 through the vehicle controller, the surface temperature of the contact position between the glass body 1 and the wiper can be increased to prevent the wiper from freezing in rainy and snowy weather. Therefore, the heating function can ensure that the wiper works normally in cold weather, avoid wiper failure caused by freezing, and improve driving safety.

[0086] According to one embodiment of the present application, referring to Figure 1 As shown, the heating layer 19 further includes a second heating portion 22 disposed at the edge of the inner glass substrate 4 , and the second heating portion 22 is connected to the first heating portion 20 .

[0087] Specifically, the second heating part 22 and the first heating part 20 form a complete heating network, which can further increase the temperature of the glass body 1, thereby removing rain and snow in rainy and snowy weather, preventing the glass from fogging or having water droplets, ensuring the driver's clear field of vision, and improving driving safety.

[0088] Furthermore, by arranging the second heating portion 22 at the edge of the inner glass substrate 4, the driver's field of vision and the aesthetics of the front windshield are not affected.

[0089] According to one embodiment of the present application, the first adhesive layer 6 and / or the second adhesive layer 7 is a polyvinyl butyral film layer.

[0090] Specifically, the polyvinyl butyral (PVB) film layer is a high-viscosity thin film material with the characteristics of high transparency, high adhesion, impact resistance, good durability, moisture resistance, water absorption and sound insulation. It can resist the influence of harsh environmental conditions such as high temperature, moisture, and ultraviolet rays, ensuring the stable performance of the front windshield in various environments.

[0091] The PVB film layer is colorless and transparent with high transparency and will not affect the clarity of the front windshield.

[0092] The PVB film layer has strong adhesion, which can ensure the close adhesion between the outer glass substrate 3, the liquid crystal color-changing film layer 5 and the inner glass substrate 4, prevent delamination or peeling, improve the overall structural stability, improve its impact resistance, and protect the safety of people in the car.

[0093] The PVB film layer has good impact resistance and can absorb energy when subjected to external impact, reducing the risk of debris splashing and improving the safety of the front windshield.

[0094] The PVB film layer can resist the influence of harsh environmental conditions such as high temperature, moisture, and ultraviolet rays, maintain stable performance for a long time, and is suitable for long-term outdoor use.

[0095] When stored at room temperature, the adhesion of the PVB film layer is not affected by humidity and water absorption, maintaining a stable bonding effect.

[0096] The PVB diaphragm layer has excellent sound insulation effect, especially for high-frequency noise. It can significantly reduce the noise inside the car and improve driving comfort.

[0097] Through the bonding effect of the PVB film layer, the liquid crystal color-changing film layer 5 can work more stably and achieve the effect of variable transmittance. Specifically, when the upper first liquid crystal color-changing film 10 is in the power-off state, it can effectively block the sunlight and prevent the sunlight from directly hitting the driver's eyes; when the lower second liquid crystal color-changing film 11 is in the power-on state, it can improve the transmittance, make the projection information clearer, and improve driving safety and comfort.

[0098] According to an embodiment of the present application, the thickness of the polyvinyl butyral film layer is between 380 μm and 1140 μm.

[0099] Specifically, by controlling the thickness of the PVB film layer between 380μm and 1140μm, this thickness range can provide sufficient bonding strength to ensure close adhesion between the liquid crystal color-changing film layer 5 and the inner and outer glass substrates, prevent delamination or peeling, improve the overall structural stability, and will not affect the transparency of the front windshield due to excessive thickness, thereby ensuring a clear field of vision for the driver.

[0100] According to an embodiment of the present application, the thickness of the liquid crystal color-changing film layer 5 is between 100 μm and 300 μm.

[0101] Specifically, by controlling the thickness of the liquid crystal color-changing film layer 5 to be between 100 μm and 300 μm, this thickness range can ensure that the liquid crystal color-changing film layer 5 can respond quickly in the on and off states, making the color-changing process faster and achieving an efficient color-changing effect.

[0102] According to an embodiment of the present application, the thickness of the outer glass substrate 3 and the inner glass substrate 4 are both between 1.5 mm and 3.5 mm.

[0103] Specifically, by controlling the thickness of the outer glass substrate 3 and the inner glass substrate 4 between 1.5 mm and 3.5 mm, it is ensured that the front windshield achieves a lightweight design while providing sufficient structural strength and optical performance. This design improves the impact resistance and field of view clarity of the front windshield.

[0104] Moreover, according to different production requirements, the outer glass substrate 3 and the inner glass substrate 4 can be set as a flat glass sheet, so that the finished glass is a flat glass product. Of course, the outer glass substrate 3 and the inner glass substrate 4 can also be designed as curved glass sheets with the same curvature, so that the glass becomes a glass product with a certain curvature shape to meet the customer's requirements for different shapes. In addition, according to requirements, the outer glass substrate 3 and the inner glass substrate 4 can be set into different shapes, and the setting method is flexible to meet different requirements. At the same time, in this embodiment, the outer glass substrate 3 and the inner glass substrate 4 are both float glasses with a thickness of 1.5 mm to 3.5 mm, with good structural performance and convenient material acquisition.

[0105] In one embodiment, when preparing the front windshield of the above embodiment, the outer glass substrate 3 and the inner glass substrate 4 are first cut according to the predetermined installation size, and then the ceramic ink layer is printed on the two glass substrates respectively using a special printing device. The ceramic ink can be a black or colored chemical raw material, and the main component is silicon dioxide. It can be well combined with the glass under high temperature, has a certain bonding strength and is not easy to fall off, and can be designed with a specific pattern as required; after drying, the glass substrate is subjected to hot bending and forming treatment, and then glued, and then vacuum high-pressure polymerization is performed.

[0106] According to an embodiment of the second aspect of the present application, the present application also provides a vehicle, comprising: a vehicle body and a front windshield of the above embodiment, wherein the front windshield is arranged on the vehicle body.

[0107] Since the vehicle provided in the embodiment of the present application includes the front windshield of the above embodiment, it has all the technical effects of the front windshield of the above embodiment, which will not be elaborated here.

[0108] The above are only preferred embodiments of the present application and are not intended to limit the embodiments of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the embodiments of the present application should be included in the protection scope of the embodiments of the present application.

Claims

1. A front windshield, characterized in that: include: The glass body comprises an outer glass substrate and an inner glass substrate which are arranged opposite to each other; The light-transmitting layer structure is sandwiched between the outer glass substrate and the inner glass substrate, and the cross-sectional area of ​​the light-transmitting layer structure gradually decreases from the upper end to the lower end.

2. The front windshield according to claim 1, characterized in that: The light-transmitting layer structure comprises: A liquid crystal color-changing film layer is provided between the outer glass substrate and the inner glass substrate; A first adhesive layer is provided between the outer glass substrate and the liquid crystal color-changing film layer; A second adhesive layer is provided between the inner glass substrate and the liquid crystal color-changing film layer; Wherein, the cross-sectional area of ​​the first adhesive layer and / or the second adhesive layer gradually decreases from the upper end to the lower end.

3. The front windshield according to claim 2, characterized in that: The glass body has a sunshade area and a display area; The liquid crystal color-changing film layer includes a first liquid crystal color-changing film and a second liquid crystal color-changing film, wherein the first liquid crystal color-changing film corresponds to the sunshade area, and the second liquid crystal color-changing film corresponds to the display area.

4. The front windshield according to claim 3, characterized in that: First bus bars are provided on both sides of the first liquid crystal color-changing film, and each of the first bus bars is provided with a first wire connector; Second bus bars are provided on both sides of the second liquid crystal color-changing film, and each of the second bus bars is provided with a second wire connector; The first wire connector and the second wire connector are both used to electrically connect to a vehicle-mounted controller, and the vehicle-mounted controller is used to control the on and off of the first liquid crystal color-changing film and the second liquid crystal color-changing film.

5. The front windshield according to claim 3, characterized in that: The sunshade area is provided with an accessory mounting bracket.

6. The front windshield according to claim 2, characterized in that: The front windshield also includes: The first ink layer is disposed on a side of the outer glass substrate adjacent to the first adhesive layer.

7. The front windshield according to claim 6, characterized in that: The front windshield also includes: The second ink layer is arranged on the side of the inner glass substrate facing away from the second adhesive layer.

8. The front windshield according to claim 7, characterized in that: The front windshield also includes: The heating layer is arranged on the side of the second ink layer facing away from the inner glass substrate, and the heating layer includes a first heating part corresponding to the vehicle wiper, the first heating part is electrically connected to a heating connector, and the heating connector is used to electrically connect to the vehicle controller.

9. The front windshield according to any one of claims 2 to 8, characterized in that: The first adhesive layer and / or the second adhesive layer is a polyvinyl butyral film layer.

10. A vehicle, characterized in that: include: A vehicle body and the front windshield according to any one of claims 1 to 9, wherein the front windshield is provided on the vehicle body.

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