Dimming front windshield glass assembly and vehicle

Abstract

The invention relates to the technical field of vehicle dimming glass, and particularly discloses a dimming front windshield glass assembly and a vehicle, and the dimming front windshield glass assembly comprises outer layer glass, inner layer glass, and a first film structure, a dimming film structure and a second film structure which are sequentially arranged from the outer layer glass to the inner layer glass. The dimming thin film assembly is located on the top of the outer layer glass, so that the light transmittance of the front windshield glass assembly is adjusted through the dimming thin film assembly, when a vehicle runs under strong sunlight, the top of the front windshield glass assembly is dimmed through the dimming thin film assembly, and irradiation of the sunlight is effectively blocked; according to the dimming front windshield glass assembly, when a vehicle runs under weak sunlight, the top of the front windshield glass assembly is brightened through the dimming thin film assembly, the light transmittance is improved, and a driver is prevented from feeling oppression; the problems that the wind resistance is increased and the light transmittance of the front windshield cannot be adjusted due to the fact that the front windshield in the prior art adopts a sunshade mode of a sunshade cover are effectively solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle dimming glass, and in particular to a dimming front windshield glass assembly and a vehicle. Background Art

[0002] At present, due to the small inclination angle of the front windshield of commercial vehicles, sunlight directly enters the cab from the front windshield, which has a great impact on the driver's vision. In the prior art, a sunshade is usually equipped on the front windshield to block part of the sunlight and reduce the amount of sunlight projection. In addition, in order to reduce fuel consumption, commercial vehicles are increasingly adapting to the trend of low wind resistance. However, the sunshade in the prior art has a great disturbance to the airflow, increases the wind resistance, and is difficult to adapt to the trend of low wind resistance. Moreover, once the position and light transmittance of the sunshade are determined, it will always exist with the vehicle. If the vehicle is driving without strong sunlight, it will affect the light transmittance of the upper part of the vehicle, causing a sense of depression to the driver. Summary of the invention

[0003] The purpose of the present invention is to provide a dimming windshield glass assembly and a vehicle to solve the problem that the sunshade method of the windshield in the prior art using a sunshade increases wind resistance and the light transmittance of the windshield cannot be adjusted.

[0004] On the one hand, the present invention provides a dimming front windshield glass assembly, which includes an outer layer of glass, an inner layer of glass, and a first film structure, a dimming film structure, and a second film structure arranged in sequence from the outer layer of glass to the inner layer of glass. The outer layer of glass and the inner layer of glass can both be connected to the front windshield of the cab. The dimming film structure includes a dimming film component and a third film structure spliced ​​together. The dimming film component is located on the top of the outer layer of glass and can adjust the light transmittance of the dimming front windshield glass assembly.

[0005] As an optional technical solution for the dimming front windshield glass assembly, the thickness of the dimming film component is 0.36mm-0.4mm, and the height of the dimming film component is 190mm-210mm.

[0006] As an optional technical solution for the dimming windshield glass assembly, the dimming film component is a PDLC film, and the PDLC film can adjust the light transmittance of the dimming windshield glass assembly by controlling the voltage.

[0007] As an optional technical solution for the dimming front windshield glass assembly, the dimming front windshield glass assembly has a dimming sunshade area and a transparent viewing area distributed from top to bottom, the dimming film component is located in the dimming sunshade area, and the third film structure is located in the transparent viewing area.

[0008] As an optional technical solution for the dimming windshield glass assembly, the third film structure is a PVB film, and the thickness of the third film structure is 0.36 mm-0.4 mm.

[0009] As an optional technical solution for the dimming windshield glass assembly, the first film structure is a PVB film, and the thickness of the first film structure is 0.36 mm-0.4 mm.

[0010] As an optional technical solution for the dimming front windshield glass assembly, the second film structure is a sound-insulating and heat-insulating PVB film, and the thickness of the second film structure is 0.74mm-0.78mm.

[0011] As an optional technical solution of the dimming front windshield glass assembly, the dimming front windshield glass assembly also includes a silver-plated film structure, which is arranged between the outer glass and the first film structure, and the silver-plated film structure can defrost the dimming front windshield glass assembly.

[0012] As an optional technical solution for the dimming front windshield glass assembly, the silver-plated film structure includes a silver-plated film body and a heating terminal connected to the bottom of the silver-plated film body, the silver-plated film body is arranged between the outer glass and the first film structure, and the heating terminal can be connected to the vehicle power supply.

[0013] As an optional technical solution for the dimming windshield glass assembly, the thickness of the outer layer of glass and the inner layer of glass are both 2mm-4mm.

[0014] On the other hand, the present invention provides a vehicle, comprising the dimming front windshield glass assembly in any of the above solutions.

[0015] The beneficial effects of the present invention are:

[0016] The present invention provides a dimming windshield glass assembly, which comprises an outer layer of glass, an inner layer of glass, and a first film structure, a dimming film structure and a second film structure which are sequentially arranged from the outer layer of glass to the inner layer of glass. Among them, the dimming film structure includes a dimming film component and a third film structure spliced ​​together, and the dimming film component is located on the top of the outer glass, so that the dimming film component is used to adjust the transmittance of the windshield glass assembly, abandoning the method of using a sunshade to block sunlight from entering the cab in the prior art, while reducing wind resistance and adapting to the trend of low wind resistance; when the vehicle is traveling under strong sunlight, the dimming film component is used to dim the top of the windshield glass assembly to effectively block the sunlight; when the vehicle is traveling under weak sunlight, the dimming film component is used to brighten the top of the windshield glass assembly to improve the transmittance and avoid causing a sense of oppression to the driver. The dimming windshield glass assembly of the present invention effectively solves the problem that the sunshade method of the windshield in the prior art increases the wind resistance and the transmittance of the windshield cannot be adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a dimming front windshield glass assembly in an embodiment of the present invention;

[0018] Figure 2 4 is a cross-sectional view of a dimming front windshield glass assembly according to an embodiment of the present invention.

[0019] In the figure:

[0020] 1. Outer glass;

[0021] 2. Inner glass;

[0022] 3. The first film structure;

[0023] 4. dimming film structure; 41. dimming film assembly; 42. third film structure;

[0024] 5. Second film structure;

[0025] 61. Dimming and sunshade area; 62. Transparent viewing area;

[0026] 7. Silver-plated film structure; 71. Silver-plated film body; 72. Heating terminal. DETAILED DESCRIPTION

[0027] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Embodiments of the present invention are described in detail below, examples of which 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 only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] like Figure 1 to Figure 2 As shown, this embodiment provides a dimming windshield glass assembly, which includes an outer layer of glass 1, an inner layer of glass 2, and a first film structure 3, a dimming film structure 4, and a second film structure 5 sequentially arranged from the outer layer of glass 1 to the inner layer of glass 2. Among them, the outer layer of glass 1 and the inner layer of glass 2 can be connected to the front windshield of the cab, and the dimming film structure 4 includes a dimming film component 41 and a third film structure 42 spliced ​​together. The dimming film component 41 is located on the top of the outer layer of glass 1 and can adjust the light transmittance of the dimming windshield glass assembly.

[0032] The present invention can utilize the dimming film component 41 to adjust the light transmittance of the windshield glass assembly, abandoning the method of using a sunshade to block sunlight from entering the cab in the prior art, while reducing wind resistance and adapting to the trend of low wind resistance; when the vehicle is traveling under strong sunlight, the dimming film component 41 is utilized to dim the top of the windshield glass assembly to effectively block the sunlight; when the vehicle is traveling under weak sunlight, the dimming film component 41 is utilized to brighten the top of the windshield glass assembly to improve the light transmittance and avoid causing a sense of oppression to the driver. The dimming windshield glass assembly of the present invention effectively solves the problem that the sunshade method of the windshield in the prior art increases the wind resistance and the light transmittance of the windshield cannot be adjusted.

[0033] In some embodiments, the thickness of the dimming film assembly 41 is 0.36mm-0.4mm, and the height of the dimming film assembly 41 is 190mm-210mm. The thickness of the dimming film assembly 41 is limited to the above-mentioned numerical range, while ensuring the explosion-proof performance, taking into account the transmittance and fit, and avoiding the situation of stratification or blurred vision caused by excessive thickness. The thickness of the dimming film assembly 41 can be selected according to the actual situation. Specifically, the thickness of the dimming film assembly 41 can be selected as 0.36mm, 0.38mm or 0.4mm, etc. In this solution, the thickness of the dimming film assembly 41 is 0.38mm. Similarly, the height of the dimming film assembly 41 can be selected according to the specific situation of the vehicle. Specifically, the height of the dimming film assembly 41 can be selected as 190mm, 200mm or 210mm, etc. In this solution, the thickness of the dimming film assembly 41 is 200mm. Among them, the height of the dimming film assembly 41 refers to the distance between the bottom of the dimming film assembly 41 and the top of the outer glass 1.

[0034] Specifically, the dimming film assembly 41 includes but is not limited to a PDLC film, wherein the PDLC film can be used to adjust the light transmittance of the dimming front windshield glass assembly by controlling the voltage. The PDLC film can control the haze value of the PDLC film by controlling the voltage. Specifically, the voltage of 0-36V corresponds to a haze value of 95%-5%, and the higher the haze value, the lower the light transmittance.

[0035] It should be noted that PDLC film is a polymer dispersed liquid crystal film, which is an intelligent optoelectronic material composed of a high molecular polymer and liquid crystal droplets. It controls the arrangement state of liquid crystal molecules through an electric field to achieve transmittance switching.

[0036] In this embodiment, the dimming front windshield glass assembly has a dimming sunshade area 61 and a transparent viewing area 62 distributed from top to bottom. The dimming film assembly 41 is located in the dimming sunshade area 61, and the third film structure 42 is located in the transparent viewing area 62. In this way, the dimming film assembly 41 can adjust the light transmittance of the dimming sunshade area 61 to meet the driver's use requirements. At the same time, the third film structure 42 is arranged in the transparent viewing area 62 to ensure the driver's normal driving.

[0037] Specifically, the third film structure 42 includes but is not limited to a PVB film. The PVB film is used to bond two layers of glass under high temperature and high pressure. When impacted, it can adhere to glass fragments to prevent splashing and injuring people. The light transmittance of the PVB film is as high as 90% or more, ensuring a clear driving field of vision. Special coatings or materials can be added to achieve anti-glare, anti-ultraviolet (blocking rate ≥ 99%) and other functions. It is also highly weather-resistant and can adapt to extreme temperatures (-50°C to 100°C).

[0038] In this embodiment, the thickness of the third film structure 42 is 0.36 mm-0.4 mm. The thickness of the third film structure 42 is limited to the above numerical range, while ensuring the explosion-proof performance, taking into account the transmittance and weather resistance. The thickness of the third film structure 42 can be selected according to actual conditions. Specifically, the thickness of the third film structure 42 can be selected to be 0.36 mm, 0.38 mm or 0.4 mm, etc. In this solution, the thickness of the third film structure 42 is 0.38 mm.

[0039] Specifically, the first film structure 3 includes but is not limited to a PVB film. The properties and functions of the first film structure 3 and the third film structure 42 are the same, which will not be repeated here. The thickness of the first film structure 3 is 0.36mm-0.4mm. The thickness of the first film structure 3 is limited to the above numerical range, while ensuring the explosion-proof performance, taking into account the transmittance and weather resistance. The thickness of the first film structure 3 can be selected according to the actual situation. Specifically, the thickness of the first film structure 3 can be selected as 0.36mm, 0.38mm or 0.4mm, etc. In this solution, the thickness of the first film structure 3 is 0.38mm.

[0040] In some embodiments, the second film structure 5 includes but is not limited to a soundproof and heat-insulating PVB film, wherein the soundproof and heat-insulating PVB film can effectively improve the noise reduction effect and infrared blocking rate. At the same time, the sound insulation effect of the windshield glass assembly is improved by 2Db, and the total solar energy transmittance is reduced by 25%, which plays the role of sound insulation, UV isolation, and rear surround of the windshield assembly. Specifically, the thickness of the second film structure 5 is 0.74mm-0.78mm. Limiting the thickness of the second film structure 5 within the above numerical range can effectively improve the noise reduction effect, wherein the thickness of the second film structure 5 can be selected according to actual conditions. Specifically, the thickness of the second film structure 5 can be selected as 0.74mm, 0.76mm or 0.78mm, etc. In this solution, the thickness of the second film structure 5 is 0.76mm.

[0041] Specifically, the dimming windshield glass assembly further includes a silver-plated film structure 7. The silver-plated film structure 7 is disposed between the outer glass 1 and the first film structure 3, and the dimming windshield glass assembly can be defrosted by using the silver-plated film structure 7.

[0042] In some embodiments, the silver-plated film structure 7 includes a silver-plated film body 71 and a heating terminal 72 connected to the bottom of the silver-plated film body 71. The silver-plated film body 71 is arranged between the outer glass 1 and the first film structure 3, and can be connected to the vehicle power supply through the heating terminal 72. The thickness of the silver-plated film body 71 is between 100-300nm, and the heating terminal 72 is welded on the silver-plated film body 71 on both sides of the dimming front windshield glass assembly to connect to the vehicle power supply, and the power reaches 500W / m 2 , which has the effect of quickly defrosting the front windshield in winter. More than 80% of the front windshield can be defrosted within 15 minutes. The silver-plated film body 71 is arranged on the inner side of the outer glass 1, and the second film structure 5 can prevent heat from spreading into the cab, thereby increasing the defrosting efficiency on the outer glass 1.

[0043] Specifically, in this solution, the thickness of the outer glass 1 and the inner glass 2 is 2mm-4mm. The thickness of the outer glass 1 and the inner glass 2 can be selected according to actual needs; in this embodiment, the thickness of the outer glass 1 and the inner glass 2 can be selected to be 3mm.

[0044] This embodiment also provides a vehicle, including the dimming windshield glass assembly in the above scheme. The present invention can use the dimming film component 41 to adjust the light transmittance of the windshield glass assembly, abandoning the method of using a sunshade to block sunlight from entering the cab in the prior art, while reducing wind resistance and adapting to the trend of low wind resistance; when the vehicle is driving under strong sunlight, the dimming film component 41 is used to dim the top of the windshield glass assembly to effectively block the sunlight; when the vehicle is driving under weak sunlight, the dimming film component 41 is used to brighten the top of the windshield glass assembly to improve the light transmittance and avoid causing a sense of oppression to the driver. The vehicle using the present invention effectively solves the problem that the sunshade method of the windshield in the prior art increases the wind resistance and the light transmittance of the windshield cannot be adjusted.

[0045] The dimming windshield glass assembly provided by the present invention has the following advantages: it solves the problem that the wind resistance of the windshield sunshade of the vehicle is high and the light transmittance cannot be adjusted, which affects the light entering the vehicle. At the same time, it adopts the sound insulation and heat insulation PVB film and silver-plated film structure to realize the multifunctional windshield with integrated local dimming, sound insulation, heat insulation and electric heating functions.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A dimming front windshield glass assembly, characterized in that: The invention comprises an outer layer of glass (1), an inner layer of glass (2), and a first film structure (3), a dimming film structure (4), and a second film structure (5) which are sequentially arranged from the outer layer of glass (1) to the inner layer of glass (2); the outer layer of glass (1) and the inner layer of glass (2) can both be connected to the front windshield of the cab; the dimming film structure (4) comprises a dimming film assembly (41) and a third film structure (42) which are spliced ​​together; the dimming film assembly (41) is located on the top of the outer layer of glass (1) and can adjust the light transmittance of the dimming front windshield glass assembly.

2. The dimming front windshield glass assembly according to claim 1, characterized in that: The thickness of the dimming film assembly (41) is 0.36 mm-0.4 mm, and the height of the dimming film assembly (41) is 190 mm-210 mm.

3. The dimming front windshield glass assembly according to claim 2, characterized in that: The dimming film component (41) is a PDLC film, and the PDLC film can adjust the light transmittance of the dimming front windshield glass assembly by controlling the voltage.

4. The dimming front windshield glass assembly according to claim 3, characterized in that: The dimming front windshield glass assembly has a dimming sunshade area (61) and a transparent viewing area (62) distributed from top to bottom, the dimming film component (41) is located in the dimming sunshade area (61), and the third film structure (42) is located in the transparent viewing area (62).

5. The dimming front windshield glass assembly according to claim 1, characterized in that: The third film structure (42) is a PVB film, and the thickness of the third film structure (42) is 0.36 mm-0.4 mm.

6. The dimming front windshield glass assembly according to claim 1, characterized in that: The first film structure (3) is a PVB film, and the thickness of the first film structure (3) is 0.36 mm-0.4 mm.

7. The dimming front windshield glass assembly according to claim 1, characterized in that: The second film structure (5) is a sound-insulating and heat-insulating PVB film, and the thickness of the second film structure (5) is 0.74 mm-0.78 mm.

8. The dimming front windshield glass assembly according to claim 1, characterized in that: The dimming front windshield glass assembly further comprises a silver-plated film structure (7), wherein the silver-plated film structure (7) is arranged between the outer layer of glass (1) and the first film structure (3), and the silver-plated film structure (7) is capable of defrosting the dimming front windshield glass assembly.

9. The dimming front windshield glass assembly according to claim 8, characterized in that: The silver-plated film structure (7) comprises a silver-plated film body (71) and a heating terminal (72) connected to the bottom of the silver-plated film body (71); the silver-plated film body (71) is arranged between the outer layer of glass (1) and the first film structure (3); and the heating terminal (72) can be connected to a vehicle-mounted power supply.

10. The dimming front windshield glass assembly according to claim 1, characterized in that: The thickness of the outer layer of glass (1) and the inner layer of glass (2) are both 2 mm to 4 mm.

11. A vehicle, characterized in that: It comprises the dimming windshield glass assembly as described in any one of claims 1 to 10.

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