Sunshade components, laminated components and vehicles

Abstract

This application relates to a sunshade assembly, a stacked assembly, and a vehicle. The sunshade assembly includes a stacked dimming layer and a filter layer. The transmittance of the dimming layer is negatively correlated with the intensity of ultraviolet radiation in ambient light. The filter layer is used to scatter incident light. The dimming layer and filter layer are selected based on a combined sunshade index constraint to achieve the sunshade purpose. Compared to traditional physical sun visors: when this sunshade assembly is installed in a vehicle, sunshade can be achieved without manually flipping or rotating the visor, which helps drivers concentrate and improves driving safety; there is no need for edge sealing of the sunshade assembly, resulting in lower device and manufacturing costs; due to the atomizing function of the filter layer, there is no obvious physical boundary when the sunshade assembly is adjacent to non-sunshade components, therefore, black edge printing is unnecessary. Thus, when this sunshade assembly is applied to the windshield of a vehicle, it provides a wide field of vision, ensuring driving safety.

Description

Technical Field

[0001] This application relates to the field of vehicle sunshade technology, and in particular to a sunshade component, a stacked component, and a vehicle. Background Technology

[0002] Currently, many vehicles are equipped with sun visors. Sun visors block direct sunlight from entering the vehicle's interior, reducing glare and improving driving safety and comfort. For example, sun visors are typically located above the driver and front passenger seats. To block sunlight, the visor needs to be manually folded down or rotated. However, this traditional manual operation can compromise driving safety to some extent. Summary of the Invention

[0003] Therefore, it is necessary to provide a sunshade component, a stacked component, and a vehicle that can automatically adjust based on the intensity of ultraviolet light in ambient light.

[0004] In a first aspect, a sunshade component is provided, comprising: a stacked light-dimming layer and a light-filtering layer;

[0005] The transmittance of the dimming layer is negatively correlated with the intensity of ultraviolet rays in ambient light;

[0006] The filter layer is used to scatter incident light.

[0007] The transmittance of the dimming layer and the haze of the filter layer satisfy the following constraint expression:

[0008] ,

[0009] Where S is the combined shading index, T is the transmittance of the dimming layer, H is the haze of the filter layer, T0 is the maximum transmittance of the dimming layer, H0 is the maximum haze of the filter layer, a is the weighting coefficient of transmittance, b is the weighting coefficient of haze, and the sum of a and b is 1.

[0010] In one embodiment, the combined shading index of the dimming layer and the filter layer is ≥0.8.

[0011] In one embodiment, the transmittance of the light layer is ≥70%, and the haze of the filter layer is ≤3%.

[0012] In one embodiment, the transmittance of the dimming layer is ≤10%, and the haze of the filter layer is ≥70%.

[0013] In one embodiment, the filter layer is any one of a scattering film, a filter film, a reflective film, and PVB;

[0014] The filter film is used to filter out at least a portion of vertically polarized light, or at least a portion of vertically polarized light and at least a portion of parallel polarized light;

[0015] Reflective films are used to reflect visible light, or both visible and infrared light.

[0016] In one embodiment, when the filter layer is a scattering film or PVB, the filter layer has multiple haze regions, and the haze of each haze region is different.

[0017] In one embodiment, multiple haze regions of the filter layer are distributed sequentially along a preset direction, and the haze of the multiple haze regions gradually increases or decreases along the preset direction.

[0018] In a second aspect, a stacked component is provided, including the aforementioned sunshade component, a first substrate, and a second substrate;

[0019] The first substrate and the second substrate are disposed on both sides of the sunshade assembly;

[0020] or,

[0021] The first substrate and the second substrate are disposed on both sides of the dimming layer, and the filter layer is disposed on the side of the target substrate away from the ambient light; wherein, the target substrate is the substrate of the first substrate and the second substrate that is away from the ambient light.

[0022] In one embodiment, when the filter layer is a scattering film, the scattering film is printed on the side of the first substrate away from ambient light or on the side of the second substrate away from ambient light.

[0023] In one embodiment, when the laminated component is a windshield, the sunshade component is positioned near the upper edge of the windshield.

[0024] In one embodiment, multiple haze regions of the filter layer are distributed sequentially along a preset direction, and the haze of the multiple haze regions gradually decreases along the preset direction, which is the direction from the upper edge to the lower edge of the windshield.

[0025] In one embodiment, the projection of the shading component on the first substrate is located within the region of the first substrate, and the projection of the shading component on the second substrate is located within the region of the second substrate. The stacked component further includes:

[0026] The first adhesive layer is disposed at the edge of the dimming layer and is located between the first substrate and the second substrate;

[0027] The transmittance of the first adhesive layer is greater than or equal to the maximum transmittance of the dimming layer.

[0028] In one embodiment, where the first substrate and the second substrate are disposed on both sides of the dimming layer, the stacked assembly further includes: a second adhesive layer;

[0029] When the thickness of the first adhesive layer is equal to the thickness of the dimming layer, the projection of the second adhesive layer on the first substrate covers the projections of the first adhesive layer and the dimming layer on the first substrate.

[0030] When the thickness of the first adhesive layer is greater than the thickness of the dimming layer, the projection of the second adhesive layer on the first substrate overlaps with the projection of the dimming layer on the first substrate.

[0031] Thirdly, a vehicle is provided, including a vehicle body and the aforementioned stacked components, the stacked components being disposed at an installation location on the vehicle body.

[0032] In one embodiment, the aforementioned means of transport further includes:

[0033] Sensor assembly, installed inside the vehicle compartment, is used to collect signals from outside the vehicle through a collection window on a stacked assembly;

[0034] In cases where the acquisition window is located in the area of ​​the shading component, the area of ​​the shading component corresponding to the acquisition window is not equipped with a dimming layer or a filter layer.

[0035] The aforementioned sunshade components, laminated components, and vehicles have at least the following beneficial effects:

[0036] The sunshade component comprises a stacked dimming layer and a filter layer. The transmittance of the dimming layer is negatively correlated with the intensity of ultraviolet rays in the ambient light. The filter layer is used to scatter the incident light. The parameters of the dimming layer and the filter layer are designed based on constrained expressions to achieve the sunshade effect. In other words, the sunshade effect is achieved by designing appropriate transmittance for the dimming layer and the filter layer. Compared to traditional physical sunshades, when this sunshade component is installed on a vehicle, sunshade can be achieved without manually lowering or rotating the sunshade, thus improving driving safety. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 One of the structural block diagrams of a sunshade assembly according to an embodiment;

[0039] Figure 2 This is a second structural block diagram of a sunshade assembly according to one embodiment;

[0040] Figure 3 This is the third structural block diagram of a sunshade assembly according to one embodiment;

[0041] Figure 4 One of the structural block diagrams of a stacked component according to an embodiment;

[0042] Figure 5 A second structural block diagram of a stacked component according to one embodiment;

[0043] Figure 6 The third structural block diagram of a stacked component according to one embodiment;

[0044] Figure 7 The fourth structural block diagram of a stacked component according to one embodiment;

[0045] Figure 8 Fifth of the structural block diagrams of a stacked component according to one embodiment;

[0046] Figure 9 This is the sixth structural block diagram of a stacked component according to one embodiment. Detailed Implementation

[0047] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings, which illustrate embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this application will be thorough and complete.

[0048] Traditional physical sun visors rely on manual adjustment, which is cumbersome and poses safety hazards when drivers adjust them while driving.

[0049] Based on this, in a specific embodiment, such as Figures 1-3 As shown, a sunshade assembly 10 is provided, including: a stacked dimming layer 102 and a filter layer 104.

[0050] The transmittance of the dimming layer 102 is negatively correlated with the intensity of ultraviolet rays in ambient light.

[0051] The transmittance of the dimming layer 102 can be achieved based on changes in the intensity of ultraviolet radiation in ambient light, which can be achieved using photochromic materials. Photochromic materials are materials that change color when excited by a light source. Under the influence of light of a certain wavelength and intensity, the molecular structure of the photochromic material changes, thereby altering its light absorption peak. This change in the light absorption peak corresponds to a change in the color of the photochromic material, and this color change is reversible. Therefore, the color of the photochromic material can change based on changes in the intensity of ultraviolet radiation. Photochromic materials can be added to the dimming layer 102, causing its transmittance to decrease as the intensity of ultraviolet radiation in ambient light increases, and to increase as the intensity of ultraviolet radiation in ambient light decreases. When the transmittance of the dimming layer 102 is high, the human eye can see objects in the environment clearly through it; when the transmittance is low, the dimming layer 102 will block ambient light to a certain extent, thus achieving a shading effect.

[0052] The filter layer 104 is used to scatter incident light. The filter layer 104 can weaken direct light in ambient light. Optionally, the filter layer 104 can also filter some of the scattered light in ambient light, thereby achieving a fogging effect. Thus, the human eye can observe soft ambient light through the filter layer 104.

[0053] Thus, by stacking the dimming layer 102 and the filter layer 104, a sunshade component 10 capable of automatic dimming and weakening the intensity of incident light can be obtained.

[0054] The transmittance of the dimming layer 102 and the haze of the filter layer 104 satisfy the following constraint expression:

[0055] ,

[0056] Where S is the combined shading index, T is the transmittance of the dimming layer 102, H is the haze of the filter layer 104, T0 is the maximum transmittance of the dimming layer 102, H0 is the maximum haze of the filter layer 104, a is the weighting coefficient of transmittance, and b is the weighting coefficient of haze. The sum of a and b is 1.

[0057] Given a defined application environment for the shading component 10, the combined shading index can be determined. Then, based on the light transmission requirements of that application environment, the weighting coefficients for transmittance and haze are determined, resulting in a dimming layer 102 and a filter layer 104 suitable for the shading requirements of that application environment. It should be understood that while the materials and structure of the dimming layer 102 and the filter layer 104 are fixed after product molding, during the design phase, the transmittance of the dimming layer 102 and the filter layer 104 can be differentiated according to the shading needs of different scenarios.

[0058] Based on the aforementioned sunshade component structure and the transmittance design of the dimming layer 102 and the filter layer 104 under the constraint of the combined sunshade index, the purpose of sunshade can be achieved. Compared with traditional physical sunshades, when this sunshade component 10 is installed on a vehicle, sunshade can be achieved without manually flipping down or rotating the sunshade, which helps the driver concentrate and ensures driving safety.

[0059] Furthermore, when the sunshade component 10 provided in this application embodiment is installed on a vehicle, compared to installing a sunshade strip with colored ribbons on the vehicle glass, the sunshade component 10 provided in this application embodiment can automatically adjust the light according to the intensity of ultraviolet rays in the ambient light. When the ambient light intensity is high, the overall transmittance of the sunshade component 10 is low, the sunshade effect is strong, and strong light is prevented from directly shining into the eyes, ensuring the driving safety of the driver in daytime driving scenarios. When the ambient light intensity is low, such as at night, the overall transmittance of the sunshade component 10 is high. While achieving the sunshade function, the characteristics of poor visibility at night are fully considered. With a higher transmittance than during the day, it provides the driver with a better field of vision, and the sunshade function is stronger.

[0060] The sunshade component 10 provided in this application embodiment, when installed on a vehicle, does not require the introduction of electronic control devices or edge sealing of the electronic sunshade component 10 compared to an electronic sunshade, resulting in lower device and process costs. Furthermore, due to the atomization function of the filter layer 104, there is no obvious physical boundary when the sunshade component 10 is adjacent to a non-sunshade component, thus eliminating the need for black edge printing and ensuring a larger light-receiving area and field of vision. When the sunshade component 10 is applied to the windshield of a vehicle, the wide field of vision helps ensure driving safety.

[0061] Regarding the selection of the transmittance of the dimming layer 102, the haze parameter of the filter layer 104, and the weights a and b in the sunshade component 10, the selection can be made according to the specific application scenario. An example is given below, but it should be emphasized that the example here does not limit the scope of protection of this application:

[0062] When the transmittance of the dimming layer 102 is in the range of T < 1%, it can be considered as ultra-low transmittance; when the transmittance of the dimming layer 102 is in the range of 1% ≤ T < 10%, it can be considered as low transmittance; when the transmittance of the dimming layer 102 is in the range of 10% ≤ T < 30%, it can be considered as low transmittance; when the transmittance of the dimming layer 102 is in the range of 30% ≤ T < 50%, it can be considered as high transmittance; when the transmittance of the dimming layer 102 is in the range of 50% ≤ T < 70%, it can be considered as relatively high transmittance; when the transmittance of the dimming layer 102 is in the range of 70% ≤ T ≤ 80%, it can be considered as ultra-high transmittance. When the haze of the filter layer 104 is in the range of 0%≤H<25%, it can be considered as low haze; when the haze of the filter layer 104 is in the range of 25%≤H<50%, it can be considered as low haze; when the haze of the filter layer 104 is in the range of 50%≤H<75%, it can be considered as medium haze; when the haze of the filter layer 104 is in the range of 75%≤H<95%, it can be considered as high haze; and when the haze of the filter layer 104 is in the range of 95%≤H≤100%, it can be considered as relatively high haze. As shown in Table 1 (Lookup table of shading effects of combinations of dimming layer 102 with different transmittance and filter layer 104 with different haze), the shading effects obtained after combining dimming layer 102 with different transmittance and filter layer 104 with different haze are different. These shading effects can be roughly divided into poor, medium and excellent.

[0063] Table 1

[0064]

[0065] Specifically, in applications where high light transmittance is prioritized, a transmittance and haze level corresponding to poor shading effect can be selected; in applications where strong shading effect is prioritized, a transmittance and haze level corresponding to excellent shading effect can be selected; and in applications that comprehensively consider both transmittance and shading effect, a transmittance and haze level with moderate shading effect can be selected. For example, when the shading component 10 is applied to a vehicle, if the vehicle frequently travels in open plains, a shading component 10 emphasizing strong shading effect can be selected as the windshield to improve the comfort of the occupants. If the vehicle frequently travels on complex forest roads, a shading component 10 emphasizing high light transmittance (i.e., poor shading effect) can be selected as the windshield to ensure the driver's visibility, where tall trees can provide some degree of shading. When the vehicle travels over a wide area, a shading component 10 with moderate shading effect can be selected as the windshield to balance transmittance and shading effect.

[0066] After selecting appropriate transmittance and haze levels for the desired shading effect based on the application environment, the design logic of the shading component 10 needs to be considered. This design logic includes the design of transmittance and haze ratios. The transmittance ratio is the weighting coefficient for transmittance, and the haze ratio is the weighting coefficient for haze. Since the sum of a and b is 1, a higher transmittance ratio corresponds to a lower haze ratio; conversely, a lower transmittance ratio corresponds to a lower haze ratio. A higher transmittance ratio results in better ambient light blocking, while a higher haze ratio results in better ambient light scattering. Therefore, as shown in Table 2 (Design Logic Lookup Table for Shading Component 10), the design logic of the shading component 10 can be determined based on the characteristics of the application environment. As the transmittance increases, the emitted light from the dimming layer 102 becomes stronger. If a shading effect is required, the fogging function of the filter layer 104 needs to be used to weaken these emitted light rays, so that the human eye can obtain light with good visual comfort.

[0067] Table 2

[0068]

[0069] In one embodiment, the transmittance adjustment range of the shading component 10 includes a bright-state transmittance adjustment range, or a bright-state transmittance adjustment range and a dark-state transmittance adjustment range. Specifically, the transmittance adjustment range of the shading component 10 refers to the transmittance adjustment range after the dimming layer 102 and the filter layer 104 are stacked; the bright-state transmittance adjustment range is ≥2%, and the dark-state transmittance adjustment range is ≤1%.

[0070] When the transmittance adjustment range of the sunshade assembly 10 includes the bright state transmittance adjustment range, the light emitted through the sunshade assembly 10 can maintain reliable brightness, thereby illuminating the interior space based on the emitted light. Preferably, when the transmittance of the sunshade assembly 10 is within the adjustment range of 5%-40%, both sunshade effect and interior space brightness performance can be balanced. Here, the interior space refers to the space illuminated by light from the external environment after passing through the sunshade assembly 10, as opposed to the external environment. When the sunshade assembly 10 is applied to a vehicle, such as a windshield, a sunshade assembly 10 with a transmittance adjustment range including the bright state transmittance adjustment range can always provide the driver with sufficient visual light, thereby ensuring driving safety.

[0071] When the transmittance adjustment range of the sunshade assembly 10 includes both a bright state transmittance adjustment range and a dark state transmittance adjustment range, the sunshade assembly 10 enables the interior space to switch between dark and bright states of brightness according to the intensity of ultraviolet rays in ambient light, thereby improving the adjustment flexibility of the sunshade assembly 10. Preferably, when the transmittance of the sunshade assembly 10 is within the adjustment range of 1%-10%, the brightness difference between the upper limit of the bright state brightness and the lower limit of the dark state brightness is more suitable. Even with frequent changes in ambient light, the changes in light in the interior environment can maintain a gentle level of variation, so that people inside the interior will not experience stimulating and intense light changes. Taking the application of the sunshade assembly 10 in a vehicle as an example, when the vehicle is traveling on a forest road, glaring sunlight will penetrate the leaves and irregularly shine directly into the driver's eyes through the windshield, affecting driving safety. If a sunshade assembly 10 with a transmittance adjustment range including both bright and dark transmittance adjustment ranges is installed on the windshield, the interior light under the shade of trees and the interior light under the sunlight can maintain a soft variation level, thereby reducing the stimulation of ambient light to the human eye and maintaining driving safety.

[0072] In one embodiment, the projection of the filter layer 104 onto the dimming layer 102 can be greater than the projection of the dimming layer 102 onto the filter layer 104. In this case, such as... Figure 2As shown, the filter layer 104 completely covers the dimming layer 102, and the area of ​​the filter layer 104 is larger than the area of ​​the dimming layer 102. In this case, when ambient light passes through the dimming layer 102 and the filter layer 104, the transmittance of the dimming layer 102 changes under the influence of the ultraviolet intensity of the ambient light. When the ultraviolet intensity is high, the transmittance of the dimming layer 102 decreases, and less ambient light passes through the dimming layer 102. The filter layer 104 scatters the light projected onto the filter layer 104 to obtain softer light. Therefore, the brightness and glare of the ambient light projected onto the dimming layer 102 and the filter layer 104 are greatly reduced after emission. Furthermore, since the area of ​​the filter layer 104 is larger than that of the dimming layer 102, some ambient light will not be projected onto the dimming layer 102, but only onto the filter layer 104. At this point, the light projected onto the filter layer 104 will be scattered, resulting in bright but low-glare emitted light. This causes the light from the dimming layer 102 to its outer perimeter to transition from low-brightness soft light to high-brightness soft light, weakening the visual appearance of the dimming layer 102's boundary. In addition, when the sunshade assembly 10 is applied to vehicles, such as windshields, the angle of incidence of sunlight onto the windshield changes due to the relative movement of the Earth and the Sun. For example, at noon, sunlight enters the vehicle from the upper edge near the windshield. At this time, the area where the dimming layer 102 of the sunshade assembly 10 is located adjusts and scatters the brightness of the incident light to prevent high-brightness light from directly hitting the eyes. In the afternoon, as the sun sets, sunlight enters from the front of the windshield, and the brightness of the sunlight decreases. At this time, the area where the dimming layer 102 of the sunshade assembly 10 is located adjusts and scatters the brightness of the incident light, and the filter layer 104 outside the dimming layer 102 of the sunshade assembly 10 scatters the incident light, ensuring that the light entering the eyes through this area is a soft, high-brightness light. This is beneficial for ensuring visibility under low ambient light conditions in the evening and improving driving safety while achieving the purpose of sun shading.

[0073] In one embodiment, the projection of the filter layer 104 onto the dimming layer 102 can be smaller than the projection of the dimming layer 102 onto the filter layer 104. In this case, such as Figure 3As shown, the dimming layer 102 completely covers the filter layer 104, and the area of ​​the dimming layer 102 is larger than the area of ​​the filter layer 104. In this case, after ambient light passes through the dimming layer 102 and the filter layer 104, it becomes low-brightness, high-scattering (low brightness and not glaring) outgoing light. However, when ambient light is only projected onto the dimming layer 102, it becomes low-brightness but glaring outgoing light, causing the light from the filter layer 104 to the outer area of ​​the filter layer 104 to transition from a blurred high-brightness field of vision area to a clear high-brightness field of vision area. Furthermore, when the sunshade assembly 10 is applied to vehicles, such as when it is applied to the windshield, if driving in an environment with low road visibility, the dimming layer 102 outside the filter layer 104 on the sunshade assembly 10 can adjust the brightness of the incident light without affecting the clarity of that area, allowing the driver to clearly see the road conditions from that area, thus ensuring driving safety while balancing driving visibility clarity and sunshade effect.

[0074] In one embodiment, the projection of the filter layer 104 onto the dimming layer 102 can be equal to the projection of the dimming layer 102 onto the filter layer 104, such as... Figure 1 As shown, the dimming layer 102 overlaps with the filter layer 104. When ambient light is projected onto the sunshade component 10, it must pass through the dimming layer 102 and the filter layer 104. At this time, the sunshade effect of the sunshade component 10 is optimal, and the light emitted after the sunshade component 10 has low brightness and low glare.

[0075] In one specific embodiment, the combined shading index of the dimming layer 102 and the filter layer 104 is ≥0.8.

[0076] The shading effect of the shading component 10 can be determined by the combined shading index. The higher the combined shading index, the better the shading effect of the shading component 10; the lower the combined shading index, the worse the shading effect. When ambient light of the same intensity is projected onto the shading component 10, the shading component 10 with a high combined shading index corresponds to a lower intensity of emitted light and a softer light, while the shading component 10 with a low combined shading index corresponds to a higher intensity of emitted light and a more glaring light.

[0077] When the sunshade component 10 is applied in the field of transportation vehicles, both its sunshade effect and visibility need to be considered. Better sunshade often means lower visibility, which affects driving safety. Conversely, poor sunshade means that in strong ambient light, intense light will shine directly into the eyes of occupants, affecting their riding or driving experience. If intense ambient light shines directly into the driver's eyes, it poses a driving hazard. Visibility refers to the brightness of the light emitted after passing through the sunshade component 10, which is observable to the human eye. Therefore, the combined sunshade index needs to comprehensively consider both sunshade effect and visibility.

[0078] With a combined shading index ≥ 0.8, the sunshade component 10 provides good shading while allowing the human eye to clearly observe the external environment. Specifically, taking the sunshade component 10 as a vehicle window as an example, during daytime driving, a combined shading index ≥ 0.8 emits soft, non-glaring light, preventing direct sunlight from interfering with the driver's driving behavior. During nighttime driving, a combined shading index ≥ 0.8 provides good transmittance, ensuring the driver's visibility at night, thus allowing them to clearly identify traffic signs on the road and reducing the risk of traffic accidents.

[0079] Preferably, when the sunshade assembly 10 is applied to the windshield of an automobile as a component of the windshield, the combined sunshade index of the dimming layer 102 and the filter layer 104 can be 0.85. A combined sunshade index of 0.85 can minimize the impact on the driver's vision while ensuring appropriate brightness in the vehicle interior environment.

[0080] In one specific embodiment, the transmittance of the dimming layer 102 is ≥70%, and the haze of the filter layer 104 is ≤3%.

[0081] As shown in Table 3 (Combined Shading Index Lookup Table), the combined shading index can be determined by specifying the transmittance of the dimming layer 102, the haze of the filter layer 104, the weighting coefficient of transmittance, and the weighting coefficient of haze. The accuracy of the combined shading index can be verified by conducting typical scenario verification on the finally determined shading component 10.

[0082] Table 3

[0083]

[0084] With a transmittance T ≥ 70% and haze H ≤ 3%, the sunshade component 10 exhibits ideal high transparency and low scattering. With a transmittance T = 70% and haze H = 3%, the combined shading index is approximately 0.068, meaning the shading effect of the sunshade component 10 is 6.8%. The high transparency and low scattering of the sunshade component 10 makes it suitable for applications requiring high brightness and high clarity. For example, when the sunshade component 10 is used as a windshield, if a vehicle is traveling on a complex and winding forest road, a high brightness and high clarity driving view is required. This high transparency and low scattering of the sunshade component 10 allows a large amount of ambient light to pass through it, and the corresponding emitted light is light-scattered to a low degree by the filter layer 104, thus enabling the human eye to observe complex road conditions clearly through the sunshade component 10, ensuring driving safety.

[0085] In one specific embodiment, the transmittance of the dimming layer 102 is ≤10%, and the haze of the filter layer 104 is ≥70%.

[0086] As shown in Table 3, when the transmittance T ≤ 10% and the haze H ≥ 70%, the shading component 10 exhibits ideal low transparency and high scattering. When the transmittance T = 10% and the haze H = 70%, the combined shading index is 0.82, meaning the shading effect of the shading component 10 is 82%. The shading component 10 with low transparency and high scattering is suitable for environments requiring soft, dim light. This shading component 10 allows a small amount of ambient light to pass through it, and the emitted light is highly scattered by the filter layer 104, thus enabling people to obtain soft, dim light through the shading component 10. For example, when the sunshade component 10 is used as the windshield, if the vehicle is traveling in an open plain area, a soft, dark driving vision is required to minimize the stimulation of the human eye by sunlight. Moreover, there are fewer obstacles in an open plain area, and the soft, dark environment can ensure driving safety while taking into account the sunshade effect.

[0087] When the transmittance T=0%, the dimming layer 102 does not allow ambient light to pass through, and the shading component 10 is completely opaque, achieving the ultimate shading effect. At this point, adjusting the haze of the filter layer 104 will not affect the shading effect, and the combined shading index corresponding to this shading effect remains constant at 1. When the haze H=100%, the filter layer 104 completely scatters all incident light. At this point, there is no direct light in the outgoing light after passing through the filter layer 104. Therefore, regardless of changes in transmittance, the combined shading index remains constant at 1. Thus, the shading effect of the shading component 10 can be improved by reducing the transmittance of the dimming layer 102 or increasing the haze of the filter layer 104.

[0088] In one specific embodiment, the filter layer 104 is any one of a scattering film, a filter film, a reflective film, and PVB (Polyvinyl Butyral).

[0089] The filter film is used to filter out at least a portion of vertically polarized light, or at least a portion of vertically polarized light and at least a portion of parallel polarized light.

[0090] Vertically polarized light is light whose electric field vector is perpendicular to the incident plane; parallel polarized light is light whose electric field vector is parallel to the incident plane. When the sunshade assembly 10 is applied to the windshield of an automobile as a component of the windshield, vertically polarized light is light perpendicular to the windshield, and parallel polarized light is light parallel to the windshield.

[0091] When sunlight shines on reflective surfaces such as the ground, water, snow, or metal parts of a vehicle, vertically polarized light is generated. Therefore, when the sunshade assembly 10 is applied to a vehicle, the filter layer 104 can filter out vertically polarized light, significantly reducing glare reflected from reflective surfaces such as the ground, water, snow, or metal parts of a vehicle, thereby reducing visual interference while driving, improving the clarity of the driving field of vision, and ensuring driving safety.

[0092] Simultaneously generated with vertically polarized light is parallel polarized light, which is produced by the oblique incidence differentiation of sunlight and its reflected light. Parallel polarized light in the infrared band of sunlight is more likely to penetrate glass and enter the vehicle interior when incident obliquely, thus generating additional heat. Therefore, when the sunshade assembly 10 is applied to a vehicle, the filter layer 104 can filter out parallel polarized light to improve the infrared light blocking rate, thereby indirectly reducing the load on the vehicle's air conditioning system and reducing vehicle energy consumption.

[0093] Modern vehicles typically feature in-vehicle display systems. The light emitted from these systems, after oblique incidence, is polarized into parallel polarized light. This parallel polarized light undergoes multiple reflections within the multi-layered structure of the windshield, resulting in multiple reflections. Because the reflection intensity of this parallel polarized light differs between the inner and outer surfaces of the windshield, ghosting of the displayed image occurs after reflection. Therefore, the filter layer 104 filters out this parallel polarized light, significantly reducing the ghosting rate, thereby minimizing visual interference while driving, improving visibility, and ensuring driving safety.

[0094] In one embodiment, when the sunshade assembly 10 is applied to the windshield of a vehicle as a component of the windshield, the filter film filters out more than 85% of vertically polarized light.

[0095] Since vertically polarized light is the main cause of driving glare, filtering out more than 85% of vertically polarized light can remove most of it, thereby reducing visual interference while driving.

[0096] Furthermore, when the filter film removes more than 95% of vertically polarized light, glare interference from vehicles can be minimized. However, when the filter film removes more than 95% of vertically polarized light, the brightness of colors that rely on vertically polarized light propagation decreases, causing color distortion in the image observed by the human eye through the sunshade component 10, which can lead to misjudgment of traffic light colors and road marking colors. Therefore, considering color balance and glare reduction, the filter film can be set to remove more than 90% of vertically polarized light to reduce color distortion interference.

[0097] In one embodiment, when the sunshade assembly 10 is applied to the windshield of a vehicle as a component of the windshield, the filter film filters out more than 5% of parallel polarized light.

[0098] Since parallel polarized light is the main cause of ghosting in the displayed images of the vehicle display system on the sunshade assembly 10, when the proportion of parallel polarized light filtered out by the filter film is greater than 5%, the ghosting rate of the displayed images can be reduced, thereby reducing visual interference while driving.

[0099] Furthermore, when the filter film filters out more than 20% of parallel polarized light, the ghosting rate of the displayed image can be reduced to the greatest extent. However, when implementing a head-up display in a vehicle based on an in-vehicle display system, this head-up display relies on light, mainly parallel polarized light, being projected onto the sunshade component 10 and reflected by the sunshade component 10 to the driver's eyes. Excessive filtering of parallel polarized light will reduce the clarity of the head-up display image. Therefore, the filter film can be set to filter out more than 15% and less than 20% of parallel polarized light to improve the clarity of the head-up display image.

[0100] Furthermore, parallel polarized light is also related to the propagation of infrared light. Excessive filtering of parallel polarized light will excessively block infrared light from reaching the vehicle interior. In winter, infrared light can help warm the vehicle interior. Therefore, considering the use of infrared light to assist in warming and reduce ghosting of displayed images, the proportion of parallel polarized light filtered out by the filter film can be set to a value greater than 10% and less than 20%.

[0101] In one embodiment, when the sunshade assembly 10 is applied to the windshield of a vehicle as a component of the windshield, the transmittance of the filter film is ≥5%.

[0102] The light filter reduces its transmittance when it filters out at least a portion of vertically polarized light, or at least a portion of both vertically polarized and parallel-polarized light. By ensuring that the transmittance of the light filter is ≥5%, the driver can observe the road conditions outside the vehicle through the sunshade assembly 10, thereby ensuring driving safety.

[0103] Furthermore, when the transmittance of the filter film is ≥50%, the clarity of the driving view can be guaranteed to the greatest extent. However, as the transmittance of the filter film increases, the filtering effect of the filter film will decrease. Therefore, considering both the filtering effect and the light transmission effect, the transmittance of the filter film can be set to a value of ≥10% and ≤50%. Preferably, when considering both the filtering effect and the light transmission effect, the transmittance of the filter film can be set to 30%.

[0104] Reflective films are used to reflect visible light, or both visible and infrared light.

[0105] Visible light is fundamental to human visual perception. When the sunshade assembly 10 is applied to the windshield of a car as a component of the windshield, excessive visible light intensity or improper reflection direction can directly interfere with the driver's vision. Specifically, when excessively intense or improperly reflected visible light enters the passenger compartment directly through the sunshade assembly 10, it causes the driver's pupils to constrict, thus interfering with the driver's vision and posing a driving safety hazard. The reflective film reflects visible light, reducing direct glare during driving, thereby reducing visual interference while driving, improving the clarity of the driving field of vision, and ensuring driving safety. Excessively intense or improperly reflected visible light includes midday sunlight and its reflected light, as well as oncoming high beams when meeting other vehicles at night.

[0106] Infrared light generates additional heat when it penetrates glass and enters the interior of a vehicle. Therefore, reflective films reflect infrared light, increasing its blocking rate and indirectly reducing the load on the vehicle's air conditioning system, thereby reducing energy consumption.

[0107] In one embodiment, when the sunshade assembly 10 is applied to the windshield of a vehicle as a component of the windshield, the UV (ultraviolet) transmittance of the reflective layer is greater than 85%.

[0108] UV transmittance refers to the ability of ultraviolet rays to pass through the sunshade assembly 10. Vehicles are typically equipped with UV intensity sensors to detect UV intensity, triggering sunshade and ventilation operations in the event of strong UV radiation to maintain a suitable environment inside the vehicle. If the UV transmittance of the sunshade assembly 10 is too low, the UV intensity sensor will receive a weakened UV signal, leading to misjudgment of UV intensity. Therefore, a UV transmittance greater than 85% ensures accurate acquisition of UV intensity sensor data.

[0109] Furthermore, vehicles are typically equipped with in-vehicle UV germicidal lamps to disinfect frequently touched surfaces such as steering wheels, seat surfaces, and armrests. With a UV transmittance greater than 85%, reliable in-vehicle sterilization can be achieved without turning on the UV germicidal lamps. Based on this, the design of vehicles could consider eliminating the in-vehicle UV germicidal lamps, thereby reducing production costs.

[0110] In one specific embodiment, when the filter layer 104 is a scattering film or PVB, the filter layer 104 has multiple haze regions, and the haze of each haze region is different.

[0111] Light undergoes refraction, reflection, or diffraction in media with different refractive indices. Therefore, when light propagates through a medium containing numerous randomly distributed, non-uniform regions, its propagation direction changes multiple times, resulting in scattering. Generally, the greater the difference in refractive index between the scattering region and the substrate material, the stronger the scattering intensity. Thus, the scattering film is determined based on the substrate material and the scattering particles distributed on it. The stronger the scattering intensity of the scattering film, the stronger its fogging capability, i.e., the higher the haze. Multiple haze regions on the scattering film can be determined by the distribution of the scattering particles. Specifically, in high-haze regions, the scattering particles are more numerous and denser; in low-haze regions, the scattering particles are fewer and sparser. Therefore, multiple haze regions with different haze levels are determined based on regions with different scattering particle densities.

[0112] In one embodiment, the scattering microparticle material of the scattering film can be scattering ink. Compared with traditional scattering microparticle materials, scattering ink can be applied by printing without relying on the cutting and bonding processes in traditional processes, thereby avoiding problems such as bubbles and wrinkles generated in the bonding steps of traditional processes and improving the quality of the sunshade component 10.

[0113] When the filter layer 104 is PVB, the filter layer 104 can be spliced ​​together from multiple PVB substrates with different haze, thereby obtaining a filter layer 104 with multiple different haze regions.

[0114] In one embodiment, when the sunshade assembly 10 is applied to the windshield of a car as a component of the windshield, the haze in each haze area is greater than 50% to ensure that after sunlight passes through the sunshade assembly 10, it can emit soft light and reduce light stimulation to the driver.

[0115] In one specific embodiment, multiple haze regions of the filter layer 104 are distributed sequentially along a preset direction, and the haze of the multiple haze regions gradually increases or decreases along the preset direction.

[0116] Gradually increasing or decreasing haze will produce a gradual haze effect. Specifically, the haze of the filter layer 104 can gradually decrease from the center of the filter layer 104 to the periphery to fog up the main area of ​​the field of vision and obtain soft light; or it can gradually increase from the center of the filter layer 104 to the periphery to reserve the main area of ​​the field of vision so that the human eye can observe the external environment clearly through the sunshade component 10; or it can gradually decrease or increase from one edge of the filter layer 104 to the other edge to reserve a part of the clearer field of vision and a part of the area that can transmit soft light.

[0117] When the haze in each haze area is greater than 50%, the light directly hitting the shading component 10 can be atomized to obtain soft emitted light.

[0118] Furthermore, when the haze level in each haze region is greater than 90%, the softest light with the best fogging effect can be obtained. However, as the haze level increases, the visibility of the sunshade component 10 decreases. Therefore, considering both fogging effect and visibility, the haze level in each haze region can be set to a value that falls within the range of 60% to 90%. Further, to achieve a better balance between fogging effect and visibility, the haze regions can be divided into haze levels. For example, the haze level in areas requiring high fogging can be set to ≥80% and <90% to obtain soft emitted light after passing through the sunshade component 10; the haze level in areas requiring medium fogging can be set to ≥70% and <80% to balance fogging effect and visibility; and the haze level in areas requiring low fogging can be set to ≥60% and <70% to obtain a clear field of vision.

[0119] In a specific embodiment, such as Figures 4-6 As shown, a stacked component 20 includes the aforementioned sunshade component 10, a first substrate 202, and a second substrate 204.

[0120] The first substrate 202 and the second substrate 204 are disposed on both sides of the sunshade assembly 10.

[0121] When the first substrate 202 and the second substrate 204 are disposed on both sides of the sunshade assembly 10, they can protect the dimming layer 102 and the filter layer 104, thereby preventing the dimming layer 102 and the filter layer 104 from being scratched by sharp objects or corroded by corrosive substances, so as to ensure the normal use of the sunshade function and extend the life of the stacked assembly 20.

[0122] The first substrate 202 and the second substrate 204 are disposed on both sides of the dimming layer 102, and the filter layer 104 is disposed on the side of the target substrate away from the ambient light; wherein, the target substrate is the substrate of the first substrate 202 and the second substrate 204 that is away from the ambient light.

[0123] Since the filter layer 104 is located on the side of the target substrate away from ambient light, various items in the external environment will not directly contact the filter layer 104. The first substrate 202 and the second substrate 204 can also protect the filter layer 104 and the dimming layer 102.

[0124] In one embodiment, the projection of the dimming layer 102 on the first substrate 202 is less than or equal to the projection of the second substrate 204 on the first substrate 202, and the projection of the dimming layer 102 on the second substrate 204 is less than or equal to the projection of the first substrate 202 on the second substrate 204. That is, the stacked assembly 20 includes a sun-shading area where the sun-shading assembly 10 is disposed and the remaining non-sun-shading area. When the stacked assembly 20 is used as the windshield of a vehicle, the combined design of the sun-shading area and the non-sun-shading area allows the stacked assembly 20 to simultaneously possess both sun-shading effect and unobstructed light transmission effect, thereby balancing sun-shading function and driving visibility.

[0125] In one specific embodiment, when the filter layer 104 is a scattering film, the scattering film is printed on the side of the first substrate 202 away from ambient light or on the side of the second substrate 204 away from ambient light.

[0126] When the filter layer 104 is a film, its thickness is generally the same as that of the dimming layer 102 to avoid interference fringes caused by the optical path difference between the filter layer 104 and the dimming layer 102, thereby ensuring uniform light transmission. The optical path is determined based on the film's thickness and refractive index; therefore, the optical path difference is determined based on the difference between the optical path of the filter layer 104 and the optical path of the dimming layer 102.

[0127] Compared to a film-type filter layer 104, a printed filter layer 104 can avoid optical path difference, thereby ensuring uniform light transmission. Furthermore, the printed filter layer 104 can reduce the thickness of the stacked component 20, thereby obtaining a thin and light stacked component 20.

[0128] In one embodiment, when the thickness of the dimming layer 102 is 0.76 mm and the thickness of the film-type filter layer 104 is 0.76 mm, the total thickness of the sunshade assembly 10 is 1.14 mm.

[0129] In one embodiment, when the laminated component 20 is a windshield, the thickness of the dimming layer 102 can be less than 0.76 mm. Without changing the material and area, a dimming layer 102 with a thickness of less than 0.76 mm is lighter, resulting in lower material costs and energy consumption for vehicles equipped with a lighter dimming layer 102.

[0130] In one specific embodiment, when the laminated component 20 is a windshield, the sunshade component 10 is located near the upper edge of the windshield.

[0131] Generally, drivers primarily view the area near the lower edge and the center of the windshield while driving. Therefore, positioning the sunshade 10 near the upper edge of the windshield does not directly obstruct the driver's view. Furthermore, positioning the sunshade 10 near the upper edge of the windshield can block sunlight from the sky, thus providing sun protection. At the same time, the driver can observe road conditions through the lower edge area of ​​the windshield, thereby ensuring driving safety.

[0132] In one specific embodiment, multiple haze regions of the filter layer 104 are distributed sequentially along a preset direction, and the haze of the multiple haze regions gradually decreases along the preset direction, which is the direction from the upper edge to the lower edge of the windshield.

[0133] When the laminated component 20 is the windshield, the gradually decreasing haze from top to bottom can weaken the boundary between the sunshade area with the sunshade component 10 and the other non-sunshade areas, so as to reduce the obstruction of the driving field of vision while ensuring the sunshade effect and ensuring driving safety.

[0134] In a specific embodiment, such as Figure 7 and Figure 8 As shown, the projection of the sunshade component 10 on the first substrate 202 is located within the region of the first substrate 202, and the projection of the sunshade component 10 on the second substrate 204 is located within the region of the second substrate 204. The stacked component 20 also includes: a first adhesive layer 206.

[0135] The first adhesive layer 206 is disposed at the edge of the dimming layer 102 and is located between the first substrate 202 and the second substrate 204.

[0136] The transmittance of the first adhesive layer 206 is greater than or equal to the maximum transmittance of the dimming layer 102.

[0137] Since the projection of the sunshade component 10 on the first substrate 202 is located within the area of ​​the first substrate 202, and the projection of the sunshade component 10 on the second substrate 204 is located within the area of ​​the second substrate 204, and the first adhesive layer 206 is disposed at the edge of the dimming layer 102 and between the first substrate 202 and the second substrate 204, the stacked assembly 20 necessarily includes a sunshade area where the sunshade component 10 is disposed and a non-shade area where the first adhesive layer 206 is disposed. When the transmittance of the first adhesive layer 206 is greater than or equal to the maximum transmittance of the dimming layer 102, it can be ensured that the human eye can clearly observe the external environment through the first adhesive layer 206 in the stacked assembly 20. Preferably, when the human eye is within the transmission range of the sunshade provided by the sunshade component 10, the external environment can be observed under soft light.

[0138] Furthermore, the first adhesive layer 206 is a layer with high adhesion. When the first substrate 202 and / or the second substrate 204 are broken by impact, the first adhesive layer 206 can stick the substrate particles of the broken first substrate 202 and / or the second substrate 204 together, thereby forming a stacked assembly 20 that is broken as a whole but does not scatter, reducing the risk of substrate particles splashing to the user and improving the safety and reliability of the stacked assembly 20.

[0139] In one embodiment, the transmittance of the first adhesive layer 206 is greater than 85%, and the haze of the first adhesive layer 206 is ≤1%. Compared with a first adhesive layer 206 with 100% transmittance and / or 0% haze, setting the transmittance and haze of the first adhesive layer 206 allows for slight filtering and scattering of ambient light, resulting in softer emitted light. Preferably, when the laminated component 20 is a windshield, a haze of ≤0.4% for the first adhesive layer 206 ensures that the human eye can clearly observe the road surface conditions through the first adhesive layer 206, thereby ensuring driving safety.

[0140] In a specific embodiment, such as Figure 7 As shown, when the filter layer 104 is printed on the side of the first substrate 202 away from ambient light or the side of the second substrate 204 away from ambient light, the stacked assembly 20 further includes a second adhesive layer 208.

[0141] When the thickness of the first adhesive layer 206 is equal to the thickness of the dimming layer 102, the projection of the second adhesive layer 208 on the first substrate 202 covers the projections of the first adhesive layer 206 and the dimming layer 102 on the first substrate 202, thereby ensuring that the thickness of each region between the first substrate 202 and the second substrate 204 is consistent, avoiding the generation of air bubbles during the lamination process of the stacked assembly 20, thereby improving the production quality of the stacked assembly 20.

[0142] Furthermore, similar to the first adhesive layer 206, the second adhesive layer 208 is a layer with high adhesion. Since the projection of the second adhesive layer 208 onto the first substrate 202 covers the dimming layer 102, when the dimming layer 102 is impacted and broken, the second adhesive layer 208 can bond the film particles of the broken dimming layer 102 that are in contact with it. This avoids secondary impacts on the first substrate 202 and the second substrate 204 caused by the bursting impact force of the broken film particles, thereby reducing the risk of substrate particles splashing towards the user under secondary impact force and further improving the safety and reliability of the stacked component 20.

[0143] When the thickness of the first adhesive layer 206 is greater than the thickness of the dimming layer 102, the projection of the second adhesive layer 208 on the first substrate 202 overlaps with the projection of the dimming layer 102 on the first substrate 202. Preferably, the sum of the thickness of the second adhesive layer 208 and the thickness of the dimming layer 102 is equal to the thickness of the first adhesive layer 206, thereby ensuring that the thickness of each region between the first substrate 202 and the second substrate 204 is consistent, avoiding the generation of air bubbles during the lamination process of the stacked assembly 20, and thus improving the production quality of the stacked assembly 20.

[0144] In one embodiment, when the thickness of the first adhesive layer 206 is greater than the thickness of the dimming layer 102, the filter layer 104 can be disposed between the dimming layer 102 and the second adhesive layer 208, and the projections of the filter layer 104, the dimming layer 102, and the second adhesive layer 208 on the first substrate 202 overlap. Preferably, the sum of the thickness of the second adhesive layer 208, the thickness of the dimming layer 102, and the thickness of the filter layer 104 is equal to the thickness of the first adhesive layer 206, to ensure that the thickness of each region between the first substrate 202 and the second substrate 204 is consistent.

[0145] In one embodiment, if the thickness of the first adhesive layer 206 is greater than the thickness of the dimming layer 102, the filter layer 104 can be integrated into the second adhesive layer 208. Therefore, when designing the film thickness of the stacked component 20, the thickness of the filter layer 104 does not need to be considered, thereby reducing the process difficulty of the stacked component 20 and improving the manufacturing efficiency of the stacked component 20.

[0146] Therefore, the setting of the second adhesive layer 208 can be determined based on the thickness of the dimming layer 102 and the thickness of the first adhesive layer 206, thereby reducing the production material of the laminated component 20 while reducing the thickness deviation of the intermediate layer of the laminated component, thus balancing material cost and structural optimization of the laminated component 20.

[0147] In one specific embodiment, a vehicle is provided, including a vehicle body and the aforementioned stacked component 20, the stacked component 20 being disposed at an installation position on the vehicle body.

[0148] The laminated assembly 20 can be installed in the window position of a vehicle. Taking a vehicle as an example, the laminated assembly 20 serves as the windshield, side windows, sunroof, and rear windshield, among other vehicle-mounted glass. The size and placement of the sunshade assembly 10 within the laminated assembly 20 can be determined based on the function of the vehicle-mounted glass. For example, such as... Figure 9 As shown, when the laminated assembly 20 serves as both the windshield and rear windshield, the sunshade assembly 10 can be positioned at the upper edge of the laminated assembly 20 to adjust and weaken the brightness of light incident into the vehicle. When the laminated assembly 20 serves as both the side window and sunroof, the sunshade assembly 10 can be positioned across the entire laminated assembly 20 to provide all-around brightness adjustment and light weakening.

[0149] In one specific embodiment, the aforementioned vehicle further includes a sensor assembly.

[0150] The sensor assembly is installed inside the vehicle compartment and is used to collect signals from outside the vehicle through the acquisition window 302 on the stacked assembly 20.

[0151] In the case where the acquisition window 302 is located in the area where the shading component 10 is located, the acquisition window 302 area is not provided with a dimming layer 102 and a filter layer 104.

[0152] like Figure 7 As shown, when both the dimming layer 102 and the filter layer 104 are located between the first substrate 202 and the second substrate 204, the sunshade assembly 10 has a collection window 302 that is not coated with dimming material and filter material. Figure 8As shown, with the first substrate 202 and the second substrate 204 disposed on both sides of the dimming layer 102, and the filter layer 104 disposed on the side of the target substrate away from ambient light, the sunshade assembly 10 has a first acquisition window 302a without dimming material coating, and a second acquisition window 302b without filter material coating is reserved in the projection area on the target substrate. The first acquisition window 302a and the second acquisition window 302b can ensure the correct acquisition of the acquisition signal. The acquisition window 302 includes the first acquisition window 302a and the second acquisition window 302b.

[0153] When the windshield of a vehicle is a multi-layered component, the sensor component is that of an ADAS (Advanced Driver Assistance Systems), and the acquisition window is the FOV (Field of View) of the ADAS. The acquisition window area without a dimming layer has high transmittance. High transmittance ensures the normal acquisition of camera light signals in the ADAS, enabling the vehicle to obtain clear images even in low-light environments such as cloudy days or tunnels, thus ensuring driving safety. The acquisition window area without a filter layer has low haze. Low haze ensures normal light incidence and avoids blurred, scattered light interfering with the camera, thereby ensuring the normal recognition of the camera light signal. Therefore, by designing a physically recessed acquisition window, the normal operation of the sensor components in the vehicle can be guaranteed.

[0154] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0155] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A sunshade component, characterized in that, include: Layered dimming and filter layers; The transmittance of the dimming layer is negatively correlated with the intensity of ultraviolet rays in ambient light; The filter layer is used to scatter the incident light. The combined shading index of the dimming layer and the filter layer satisfies the following constraint expression: ， Wherein, S is the combined shading index, T is the transmittance of the dimming layer, H is the haze of the filter layer, T0 is the maximum transmittance of the dimming layer, H0 is the maximum haze of the filter layer, a is the weighting coefficient of the transmittance, b is the weighting coefficient of the haze, and the sum of a and b is 1.

2. The sunshade assembly according to claim 1, characterized in that, The combined shading index of the dimming layer and the filter layer is ≥0.

8.

3. The sunshade assembly according to claim 1, characterized in that, The transmittance of the dimming layer is ≥70%, and the haze of the filter layer is ≤3%.

4. The sunshade assembly according to claim 1, characterized in that, The transmittance of the dimming layer is ≤10%, and the haze of the filter layer is ≥70%.

5. The sunshade assembly according to claim 1, characterized in that, The filter layer is any one of a scattering film, a filter film, a reflective film, and a PVB substrate; The filter film is used to filter out at least a portion of vertically polarized light, or at least a portion of vertically polarized light and at least a portion of parallel polarized light; The reflective film is used to reflect visible light, or visible light and infrared light.

6. The sunshade assembly according to any one of claims 1-5, characterized in that, When the filter layer is a scattering film or a PVB substrate, the filter layer has multiple haze regions, and the haze of each haze region is different.

7. The sunshade assembly according to claim 6, characterized in that, The multiple haze regions of the filter layer are distributed sequentially along a preset direction, and the haze of the multiple haze regions gradually increases or decreases along the preset direction.

8. A stacked component, characterized in that, Includes the sunshade assembly, the first substrate, and the second substrate as described in any one of claims 1-7; The first substrate and the second substrate are disposed on both sides of the sunshade assembly; or, The first substrate and the second substrate are disposed on both sides of the dimming layer, and the filter layer is disposed on the side of the target substrate away from the ambient light; wherein, the target substrate is the substrate of the first substrate and the second substrate that is away from the ambient light.

9. The stacked component according to claim 8, characterized in that, When the filter layer is a scattering film, the scattering film is printed on the side of the first substrate away from ambient light or on the side of the second substrate away from the ambient light.

10. The stacked component according to claim 8, characterized in that, When the laminated assembly is a windshield, the sunshade assembly is located near the upper edge of the windshield.

11. The stacked assembly according to claim 10, characterized in that, The multiple haze regions of the filter layer are distributed sequentially along a preset direction, and the haze of the multiple haze regions gradually decreases along the preset direction, which is the direction from the upper edge to the lower edge of the windshield.

12. The stacked component according to claim 8, characterized in that, The projection of the sunshade component onto the first substrate is located within the region of the first substrate, and the projection of the sunshade component onto the second substrate is located within the region of the second substrate. The stacked component further includes: A first adhesive layer is disposed at the edge of the dimming layer and located between the first substrate and the second substrate; Wherein, the transmittance of the first adhesive layer is greater than or equal to the maximum transmittance of the dimming layer.

13. The stacked component according to claim 12, characterized in that, When the first substrate and the second substrate are disposed on both sides of the dimming layer, the stacked assembly further includes: a second adhesive layer; When the thickness of the first adhesive layer is equal to the thickness of the dimming layer, the projection of the second adhesive layer on the first substrate covers the projections of the first adhesive layer and the dimming layer on the first substrate; When the thickness of the first adhesive layer is greater than the thickness of the dimming layer, the projection of the second adhesive layer on the first substrate overlaps with the projection of the dimming layer on the first substrate.

14. A means of transportation, characterized in that, The invention includes a vehicle body and a stacked assembly as described in any one of claims 8-13, the stacked assembly being disposed at a mounting position on the vehicle body.

15. The means of transport according to claim 14, characterized in that, The means of transport also includes: A sensor assembly installed inside the passenger compartment of a vehicle, the sensor assembly being used to acquire signals from outside the vehicle through a acquisition window on the stacked assembly; Wherein, when the acquisition window is located in the area where the shading component is located, the area on the shading component corresponding to the acquisition window is not provided with the dimming layer and the filter layer.

Images