Dimming glass and vehicle

Abstract

The dimming glass comprises a first area and a second area from bottom to top in the longitudinal direction, the first area comprises a main view area, the second area comprises a secondary view area and a functional area, and the lower edge of the secondary view area is lower than or flush with the lower edge of the functional area. And a first reflective dimming film is arranged in the secondary view area. According to the front windshield, the reflective dimming film is arranged in the secondary view area, so that the front windshield is kept in a transparent state in a normal state, the overall appearance of the front windshield is improved, and the influence on the optical effect or the induction effect of components is reduced. In addition, the utility model further provides a vehicle comprising the upper dimming glass.

Description

Technical Field

[0001] The present application relates to the field of automotive parts, and particularly to a dimming glass and a vehicle. Background Art

[0002] Vehicles such as private cars, buses, and trains all have front windshield glass. Moreover, in order to improve driving comfort and safety, a flip-up sun visor is provided above the front windshield inside the vehicle body, so as to avoid strong light directly shining into the eyes of people in the cockpit when the light intensity is relatively high.

[0003] However, the manually operated sun visor is not only inconvenient to use, but also has a poor shielding effect. Therefore, there is currently a front windshield glass with a dimming functional layer compounded in the glass, and the visible light transmittance of the window is adjusted in an electric control manner, effectively improving the safety performance.

[0004] However, in order not to affect the driver's line of sight, the dimming functional layer is only provided in the upper part of the front windshield glass for dimming and sunshading. Generally, a positive dimming film is used in the dimming functional layer. The positive dimming film is transparent when powered on and frosted when powered off, resulting in an obvious dimming dividing line on the front windshield glass, affecting the overall appearance of the front windshield; moreover, arranging dimming in the area of the front windshield bracket camera will affect the optical effect or sensing effect of components such as the camera. Summary of the Utility Model

[0005] To solve the above problems, the present application provides a dimming glass and a vehicle; a trans dimming film is provided in the upper region of the front windshield glass. The trans dimming film is transparent when powered off and frosted when powered on, thereby realizing that the front windshield glass remains transparent under normal conditions, improving the overall appearance of the front windshield, and not affecting the optical effect or sensing effect of components.

[0006] To achieve the above object, the first technical solution adopted by the present application is: a dimming glass, which includes a first region and a second region from bottom to top along the longitudinal direction. The first region includes a main vision area, and the second region includes a secondary vision area and a functional area. The lower edge of the secondary vision area is lower than or flush with the lower edge of the functional area, and a first trans dimming film is provided in the secondary vision area.

[0007] In some embodiments, the distance between the lower edge of the secondary vision area and the lower edge of the functional area is between 25 mm and 200 mm.

[0008] In some embodiments, the secondary vision area includes a transition area and a shading area arranged vertically up and down. The visible light transmittance of the transition area in the dark state is greater than that of the shading area in the dark state, and the transition area and the shading area are respectively dimmed.

[0009] In some embodiments, the upper edge of the transition region is lower than the lower edge of the functional region.

[0010] In some embodiments, the upper edge of the transition region is flush with the lower edge of the functional region.

[0011] In some embodiments, the first transmittive dimming film is disposed to avoid the functional region, or the first transmittive dimming film is disposed to avoid the main viewing region.

[0012] In some embodiments, the first transmittive dimming film is disposed to avoid the functional region, and the first transmittive dimming film is disposed to avoid the main viewing region.

[0013] In some embodiments, a second transmittive dimming film is disposed in the functional region, or a third transmittive dimming film is disposed in the main viewing region.

[0014] In some embodiments, a second transmittive dimming film is disposed in the functional region, and a third transmittive dimming film is disposed in the main viewing region.

[0015] In some embodiments, the second transmittive dimming film and the first transmittive dimming film are disposed in partitioned regions.

[0016] In some embodiments, the third transmittive dimming film and the first transmittive dimming film are disposed in partitioned regions.

[0017] In some embodiments, the dimming glass further includes a shielding region disposed at the outer peripheral edge of the dimming glass, and a fourth transmittive dimming film is disposed in the shielding region.

[0018] In some embodiments, the dimming glass further includes a shielding region disposed at the outer peripheral edge of the dimming glass, and a positive dimming film is disposed in the shielding region.

[0019] In some embodiments, the entire shielding region is dimmed together.

[0020] In some embodiments, the shielding region includes a first shielding unit and a second shielding unit. The shielding region extends downward from both ends in the transverse direction of the upper peripheral edge of the dimming glass to form the first shielding unit, and the shielding region extends upward from both ends in the transverse direction of the lower peripheral edge of the dimming glass to form the second shielding unit.

[0021] The second technical solution adopted by this application is: a vehicle, including the above-mentioned dimming glass.

[0022] Compared with the prior art, this application has at least the following beneficial effects:

[0023] (1) A transmittive dimming film is provided in the upper region of the dimming glass. The transmittive dimming film is transparent when powered off and frosted when powered on, so that the dimming glass remains transparent under normal conditions, improving the overall appearance of the dimming glass.

[0024] (2) Electronic devices such as cameras are arranged in the functional area. The transmittive dimming film is arranged to avoid the functional area, or a transmittive dimming film is also arranged in the functional area but does not participate in dimming, thereby reducing the influence on the optical effect or induction effect of the electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings are only used to illustrate the principles, implementation methods, applications, features, and effects of the specific embodiments of the present application and other related contents, and should not be considered as a limitation to the present application.

[0026] In the accompanying drawings of the specification:

[0027] Figure 1 is a schematic structural diagram of a dimming glass provided by the present application;

[0028] Figure 2 is a schematic structural diagram of a dimming glass with a functional area as another embodiment provided by the present application;

[0029] Figure 3 is Figure 1 a schematic cross-sectional view taken along the A-A direction in

[0030] Figure 4 is a schematic cross-sectional view of the transmittive dimming film provided by the present application;

[0031] Figure 5 is a schematic cross-sectional view of another transmittive dimming film provided by the present application;

[0032] Figure 6 is a schematic structural diagram of a dimming glass with a secondary viewing area as another embodiment provided by the present application;

[0033] Figure 7 is a schematic structural diagram of a dimming glass with a secondary viewing area as yet another embodiment provided by the present application;

[0034] Figure 8 is a schematic structural diagram of another dimming glass provided by the present application;

[0035] Figure 9 is a schematic structural diagram of yet another dimming glass provided by the present application;

[0036] Figure 10 is a schematic structural diagram of a dimming glass with a black edge provided by the present application;

[0037] Figure 11 is Figure 10Schematic cross-sectional view along line B-B

[0038] The reference numerals involved in the above-mentioned drawings are explained as follows:

[0039] 1. First glass plate; 2. Second glass plate; 3. Adhesive layer; 4. Functional element; 5. Transmissive dimming film; 51. First substrate layer; 52. First conductive layer; 53. Dimming material layer; 54. Second conductive layer; 55. Second substrate layer; 56. Edge sealing area; 57. Partition line; 6. Main viewing area; 7. Secondary viewing area; 8. Functional area; 9. Driver's viewing area; 10. Passenger's viewing area; 11. Transition area; 12. Sunshade area; 13. Shielding area; 131. First shielding unit; 132. Second shielding unit. Detailed implementation manners

[0040] In order to make the purpose and advantages of the present application clearer, the present application will be further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0041] It should be noted that in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, 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 a limitation to the present application. In addition, the terms "first", "second", "third", "fourth", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features.

[0042] As Figure 1 shown, the present application first provides a dimming glass, which can be applied to window positions such as the front windshield, left window, and right window of a vehicle, and is particularly suitable for the front windshield of a vehicle; the dimming glass can be a single-layer glass or a laminated glass. In this embodiment, the front windshield laminated glass is used for specific description. The dimming glass includes a first area and a second area longitudinally from bottom to top. The first area includes the main viewing area 6, and the second area includes the secondary viewing area 7 and the functional area 8. The range of the main viewing area 6 is set to ensure a safe viewing range for the driver during driving. The dimming glass provided by the present application can remain transparent in the power-off state and become dark and maintain a frosted state in the power-on state, solving the problem of an obvious dimming dividing line between the secondary viewing area 7 and the main viewing area 6 when shading is not required, and can also expand the driver's viewing range.

[0043] At present, most vehicles install devices such as cameras and radars above the front windshield for recording the driving environment of the vehicle or install electronic devices such as ETC for transmitting information. Therefore, the functional area 8 is mainly used for installing electronic devices. The functional area 8 is separated from the secondary vision area 7, ensuring the light transmittance of the functional area 8, thereby reducing the impact on the optical or induction effects of the components. To avoid blocking the driver's vision while ensuring the induction effect of the electronic device, the functional area 8 is preferably set in the middle above the dimming glass.

[0044] In one embodiment, as Figure 1 shown, in the middle of the side of the secondary vision area 7 on the dimming glass away from the main vision area 6, it is recessed towards the main vision area 6 to form the functional area 8; in another embodiment, as Figure 2 shown, an area can be isolated in the middle of the secondary vision area 7 to form the functional area 8.

[0045] It should be noted that, in one embodiment, the lower edge of the side of the secondary vision area 7 close to the main vision area 6 can be flush with the lower edge of the functional area 8. In another embodiment, since the area of the functional area 8 is generally small, the lower edge of the side of the secondary vision area 7 close to the main vision area 6 can be set lower than the lower edge of the functional area 8, so that the secondary vision area 7 can block the glaring strong light directly shining into the driver's eyes; and to meet the requirements of safe driving, the width dimension of the secondary vision area 7 along the longitudinal direction is preferably less than one-third of the width of the dimming glass. At the same time, the distance between the lower edge of the secondary vision area and the lower edge of the functional area is preferably between 25 mm and 200 mm.

[0046] As Figure 3 shown, the dimming glass is preferably laminated glass, including a first glass plate 1, a second glass plate 2, an adhesive layer 3, and a functional element 4 disposed between the first glass plate 1 and the second glass plate 2. The adhesive layer 3 can be an adhesive material such as PVB, EVA, TPU, etc., or a material with adhesive function such as liquid optical clear adhesive (LOCA). The functional element 4 is combined between the first glass plate 1 and the second glass plate 2 through the adhesive layer 3.

[0047] Among them, the functional element 4 includes a first trans dimming film 5, and the first trans dimming film 5 is disposed in the secondary vision area 7. As Figure 4 shown, the first trans dimming film 5 includes a first substrate layer 51, a first conductive layer 52, a dimming material layer 53, a second conductive layer 54, and a second substrate layer 55 stacked in sequence. The dimming material layer 53 can achieve reversible changes between a high light transmittance state and a low light transmittance state under the control of an electric field, so that the first trans dimming film 5 is transparent when powered off and frosted when powered on.

[0048] In some embodiments, as Figure 5As shown, the first trans-dimming film 5 is also provided with a sealing edge area 56 to improve the sealing performance. The sealing edge area 56 is arranged around the periphery of the first trans-dimming film 5, and the sealing edge area 56 is a transparent material selected from at least one of epoxy adhesives, acrylate adhesives, polyurethane adhesives, silicone adhesives, ethylene-vinyl acetate copolymer (EVA), polyethylene terephthalate (PET), and polyolefin elastomer (POE).

[0049] In the above-mentioned first trans-dimming film 5, the first substrate layer 51 and the second substrate layer 55 are transparent materials, and at least one of high molecular polymers such as polyvinyl chloride (PVC), polyethylene terephthalate (PET), and copolymerized olefin (APO) can be selected.

[0050] In the above-mentioned first trans-dimming film 5, the first conductive layer 52 and the second conductive layer 54 are also transparent materials, and at least one of indium tin oxide (ITO), fluorine-doped SnO2 (FTO), silver screen printing, conductive nanoparticles (carbon nanotubes and silver nanowires), and conductive polymers can be adopted.

[0051] In the above-mentioned first trans-dimming film 5, the material of the dimming material layer 53 includes but is not limited to one or a combination of two or more of polymer stabilized liquid crystal (PSLC), polymer dispersed liquid crystal (PDLC), polymer network liquid crystal (PNLC), etc., and the PSLC system is preferably adopted.

[0052] Since the secondary viewing area 7 has the first trans-dimming film 5, the secondary viewing area 7 has a bright state and a dark state.

[0053] In one embodiment, in the dark state, the visible light transmittance of the secondary viewing area 7 is 1-35%, and preferably 1-5%, so as to be able to substantially completely block strong sunlight or strong irradiation light.

[0054] In one embodiment, in the bright state, the visible light transmittance of the secondary viewing area 7 ≥ 70%, such as 70%, 75%, 78%, 80%, etc.

[0055] In one embodiment, in the dark state, the visible light transmittance of the secondary viewing area 7 is 1-35%, and in the bright state, the visible light transmittance ≥ 70%.

[0056] In some embodiments, as Figure 1 shown, only the first trans-dimming film 5 is provided within the range of the secondary viewing area 7, and the first trans-dimming film 5 is not provided in the functional area 8 and the main viewing area 6, that is, the positive projection of the first trans-dimming film 5 facing the secondary viewing area 7 can be completely located inside the secondary viewing area 7 or completely coincide with the secondary viewing area 7, so as to reduce costs and ensure the light-shielding effect of the secondary viewing area 7 and the high light transmittance of the functional area 8 and the main viewing area 6.

[0057] In one embodiment, as Figure 1 shown in FIG. 1 or FIG. 2, the secondary field of view area 7 is an entire connected area. Specifically, the width of the secondary field of view area 7 is 200 mm to 800 mm. For a small car, the width of the secondary field of view area 7 is preferably 200 mm to 400 mm. For a large car, the width of the secondary field of view area 7 is preferably 300 mm to 800 mm. To improve the aesthetics, at this time, the visible light transmittance of the secondary field of view area 7 when powered off and in the bright state can be preferably the same as that of the main field of view area 6, and it can clearly see the scene outside the vehicle without shading, improving driving safety and comfort.

[0058] In one embodiment, as Figure 6 shown in FIG. 3, when looking out from the inside of the vehicle, the secondary field of view area 7 includes a driver's view area 9 and a co-driver's view area 10 separated left and right along the transverse direction. The driver's view area 9 and the co-driver's view area 10 are respectively dimmed. That is, the first trans-dimming film 5 is provided with a partition line 57 at the adjacent boundary between the two to form electrical isolation, and the first conductive layer 52 and the second conductive layer 54 are respectively connected to a voltage source at positions corresponding to the driver's view area 9 and the co-driver's view area 10.

[0059] The wire diameter of the partition line 57 is 0.01 to 0.5 mm, preferably between 0.02 mm and 0.05 mm, so that the first trans-dimming film 5 can form stable electrical isolation and the partition line 57 is not obvious. The partition line 57 can be formed by screen printing and etching, or can be formed by laser etching or mechanical cutting.

[0060] In one embodiment, as Figure 7 shown in FIG. 4, since the secondary field of view area 7 is close to the main field of view area 6 below, when the visible light transmittance of the secondary field of view area 7 in the dark state is low, it may affect the driver's line of sight looking upward. Therefore, the secondary field of view area 7 can also be arranged with a sunshade area 12 and a transition area 11 up and down along the longitudinal direction. The visible light transmittance of the transition area 11 in the dark state is greater than that of the sunshade area 12 in the dark state, so that the transition area 11 can reduce the possibility of driver dizziness; when the secondary field of view area 7 is arranged as the driver's view area 9 and the co-driver's view area 10 left and right, the driver's view area 9 and the co-driver's view area 10 can also be divided up and down to form corresponding sunshade areas 12 and transition areas 11. For a small car, the width of the sunshade area 12 is preferably 100 mm to 300 mm, and the width of the transition area 11 is preferably 10 mm to 100 mm; for a large car, the width of the sunshade area 12 is preferably 200 mm to 500 mm, and the width of the transition area 11 is preferably 200 mm to 300 mm. The sunshade area 12 and the transition area 11 are separated by the partition line 57 and dimmed respectively. The visible light transmittance of the sunshade area 12 in the dark state is preferably 1 to 5%, and the visible light transmittance of the transition area 11 in the dark state is preferably 10 to 25%. The visible light transmittances of the sunshade area 12 and the transition area 11 in the bright state are the same.

[0061] As a preferred embodiment, the upper edge of the transition region 11 is lower than or flush with the lower edge of the functional region, further improving the transition effect of dimming.

[0062] In some embodiments, as Figure 8 shown, a second trans-dimming film 5' may be provided in the functional region 8. The structural layers of the second trans-dimming film 5' and the first trans-dimming film 5 are preferably the same, and the materials of each structural layer of the two may be the same or different. A partition line 57 is provided at the adjacent position of the first trans-dimming film 5 and the second trans-dimming film 5'. The first conductive layer 52 and the second conductive layer 54 of the second trans-dimming film 5' may not be connected to the voltage source and thus do not participate in dimming, and the visible light transmittance of the functional region 8 is always ≥70%; or it may be connected to the voltage source to be adjusted to a dark state when parked outdoors with strong ultraviolet rays.

[0063] In some embodiments, as Figure 9 shown, in order to further ensure that the visible light transmittance of the secondary viewing area 7 and the main viewing area 6 is the same in the bright state, thereby improving the aesthetics, a third trans-dimming film 5'' is provided in the main viewing area 6. The structural layers of the third trans-dimming film 5'' and the first trans-dimming film 5 are preferably the same. A partition line 57 is provided at the adjacent position of the first trans-dimming film 5 and the third trans-dimming film 5''. In some cases, the first conductive layer 52 and the second conductive layer 54 of the third trans-dimming film 5'' may not be connected to the voltage source and thus do not participate in dimming; in other cases, the third trans-dimming film 5'' may also be connected to the voltage source. If the ultraviolet rays are strong in the surrounding environment when parked, the main viewing area 6 can be adjusted to a dark state through the third trans-dimming film 5'' to avoid too high temperature inside the vehicle. It should be noted that the visible light transmittance of the main viewing area 6 in the bright state is ≥70%, preferably ≥75%.

[0064] In another embodiment, the functional element 4 further includes a positive dimming film, which is frosted when powered off and transparent when powered on. The dimming film covered in the main viewing area 6 can be a positive dimming film. When driving, the main viewing area 6 is powered on, and when parked outdoors at high temperature, the positive dimming film is powered off to become a frosted dark state.

[0065] Further, referring to Figure 10 , the four peripheral edge regions of the dimming glass are set as the shielding region 13, so that the dimming glass is more beautiful when used as a front windshield, and can also reduce the possibility of the adhesive of the laminated glass aging due to exposure to the sun. In other embodiments, the shielding region 13 can be formed by ink printing; in this embodiment, the functional element 4 can cover a fourth trans-dimming film 5''' or a positive dimming film at the edge of the dimming glass to form the shielding region 13. The shielding region 13 electrically controls the visible light transmittance, and the visible light transmittance of the shielding region 13 in the dark state is set to ≤5%.

[0066] In one embodiment, the shielding area 13 is a connected annular structure for overall common dimming.

[0067] In another embodiment, the shielding area 13 includes a first shielding unit 131 and a second shielding unit 132. The shielding area extends downward at both ends in the horizontal direction along the upper peripheral edge of the dimming glass to form the first shielding unit 131, and the shielding area extends upward at both ends in the horizontal direction along the lower peripheral edge of the dimming glass to form the second shielding unit 132. The demarcation line between the first shielding unit 131 and the second shielding unit 132 is preferably flush with or lower than the demarcation line between the secondary viewing area 7 and the viewing area 6. The second shielding unit 132 may not participate in dimming to always remain in a dark state.

[0068] The present application further provides a vehicle including the above dimming glass. The vehicle can be an automobile, a train, etc. Specifically, the first glass plate 1 or the second glass plate 2 of the dimming glass faces the interior of the vehicle, and the dimming glass is installed inside the vehicle as a vehicle glass through an adhesive for body sheet metal connection.

[0069] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art in the technical field, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A dimming glass, characterized in that, Comprising: It includes a first region and a second region from bottom to top in the longitudinal direction. The first region includes a main viewing area (6), and the second region includes a secondary viewing area (7) and a functional area (8). The lower edge of the secondary viewing area (7) is lower than or flush with the lower edge of the functional area (8). A first transmittive dimming film (5) is provided in the secondary viewing area (7).

2. A dimming glass according to claim 1, characterized in that, The distance between the lower edge of the secondary viewing area (7) and the lower edge of the functional area (8) is between 25 mm and 200 mm.

3. A dimming glass according to claim 1, wherein, The secondary viewing area (7) includes a transition area (11) and a shading area (12) arranged vertically up and down. The visible light transmittance of the transition area (11) in the dark state is greater than the visible light transmittance of the shading area (12) in the dark state. The transition area (11) and the shading area (12) are respectively dimmed.

4. A dimming glass according to claim 3, characterized in that, The upper edge of the transition area (11) is lower than or flush with the lower edge of the functional area (8).

5. A dimming glass according to claim 1, characterized in that, The first transmittive dimming film (5) is arranged to avoid the functional area (8), and / or the first transmittive dimming film (5) is arranged to avoid the main viewing area (6).

6. The dimming glass according to claim 1, characterized in that, A second transmittive dimming film (5') is provided in the functional area (8), and / or a third transmittive dimming film (5'') is provided in the main viewing area (6).

7. The dimming glass according to claim 6, wherein The second transmittive dimming film (5') or the third transmittive dimming film (5''), and the first transmittive dimming film (5) are arranged in separate zones.

8. A dimming glass as claimed in claim 1, wherein, It further includes a shielding area (13) provided at the outer peripheral edge of the dimming glass; a fourth transmittive dimming film (5''') is provided in the shielding area (13), or a positive dimming film is provided in the shielding area (13).

9. A dimming glass according to claim 8, characterized in that, The shielding area (13) includes a first shielding unit (131) and a second shielding unit (132). The shielding area (13) extends downward at both ends in the transverse direction along the upper peripheral edge of the dimming glass to form the first shielding unit (131), and the shielding area (13) extends upward at both ends in the transverse direction along the lower peripheral edge of the dimming glass to form the second shielding unit (132).

10. A vehicle, characterized in that: Adopting the dimming glass comprising any one of claims 1 - 9.

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