Car sunshade

Abstract

This invention discloses a car sunshade device, comprising: a first light intensity acquisition unit, a dimming component, a camera, a second light intensity acquisition unit, and a processor; the first light intensity acquisition unit is connected to the processor and is used to acquire ambient light intensity and send the ambient light intensity to the processor; the processor is connected to the dimming component and is used to adjust the light transmittance of the dimming component according to the ambient light intensity; the camera and the second light intensity acquisition unit cooperate to determine the light intensity at the driver's eyes, so that the processor can determine the voltage value corresponding to the current ambient light intensity based on the eye light intensity. This device can automatically adjust the sunshade effect, avoiding manual adjustments by the driver that could affect driving safety; at the same time, it improves the final sunshade effect.

Description

Technical Field

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

[0002] During driving, there are often situations where the ambient light is too strong or the light shines directly into the eyes, resulting in poor lighting conditions. In such cases, sunshades are necessary to prevent these conditions from affecting the driver's ability to drive normally.

[0003] In related technologies, sun shading typically involves simply using an opaque sun visor to block light from the driver's eyes. When the shading effect is insufficient, the driver can only adjust the angle of the sun visor to improve its effectiveness. However, during driving, the driver's adjustments to the sun visor can affect driving safety; furthermore, due to factors such as the angle of light, the shading effect often remains poor even after adjustment. Summary of the Invention

[0004] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, one object of this invention is to provide a car sunshade device capable of automatically adjusting the sunshade effect, avoiding the need for manual adjustments by the driver that could affect driving safety; simultaneously, it improves the final sunshade effect.

[0005] According to an embodiment of the present invention, a car sunshade device includes: a first light intensity acquisition unit, a dimming component, and a processor; the first light intensity acquisition unit is connected to the processor, and the first light intensity acquisition unit is used to acquire ambient light intensity and send the ambient light intensity to the processor; the processor is connected to the dimming component, and the processor is used to adjust the light transmittance of the dimming component according to the ambient light intensity.

[0006] According to an embodiment of the present invention, a car sunshade device is provided by connecting a first light intensity acquisition unit to a processor, and the processor to a dimming component. The processor can then automatically adjust the light transmittance of the dimming component based on the ambient light intensity acquired by the first light intensity acquisition unit. This eliminates the need for manual adjustment of the sun visor by the driver, improving driving safety. Simultaneously, it enhances the final sunshade effect.

[0007] In some embodiments, a camera is also included, which is used to acquire a facial image of the driver and send the facial image to the processor; the processor is also used to extract facial features corresponding to the facial image to determine the driver's eye region based on the facial features.

[0008] In some embodiments, a second light intensity acquisition unit is further included, which is used to acquire light intensity data of the driver's face and send the light intensity data of the driver's face to the processor; the processor is also used to extract the eye light intensity corresponding to the driver's eye area based on the light intensity data of the driver's face and the driver's eye area.

[0009] In some embodiments, the processor adjusts the transmittance of the dimming component according to the ambient light intensity, including: the processor queries a light intensity-voltage lookup table according to the ambient light intensity to determine whether the light intensity-voltage lookup table stores a standard voltage value corresponding to the ambient light intensity; when the light intensity-voltage lookup table stores a standard voltage value corresponding to the ambient light intensity, the processor adjusts the operating voltage of the dimming component according to the standard voltage value to change the transmittance of the dimming component.

[0010] In some embodiments, when the standard voltage value corresponding to the ambient light intensity is not stored in the light intensity and voltage lookup table, it is determined whether the eye light intensity is greater than a preset light intensity threshold; when the eye light intensity is greater than the preset light intensity threshold, the operating voltage of the dimming component is adjusted so that the eye light intensity in the driver's eye area is equal to the preset light intensity threshold.

[0011] In some embodiments, when the operating voltage of the dimming component is adjusted and the light intensity in the driver's eye area is equal to the preset light intensity threshold, the current operating voltage of the dimming component is obtained, and the current operating voltage of the dimming component and the ambient light intensity are associated and stored in the light intensity and voltage lookup table.

[0012] In some embodiments, the system further includes a switch assembly connected to the processor, the switch assembly being used to acquire the driver's operation command; the dimming assembly is a dimmable transparent display assembly, the dimmable transparent display assembly including a dimming layer and a transparent display layer, the processor being further used to adjust the light transmittance of the dimming layer according to the operation command, and to display the driver's facial image acquired by the camera on the transparent display layer.

[0013] In some embodiments, the dimming layer includes a first substrate, a first electrode layer, a dimming material layer, a second electrode layer, and a second substrate disposed in sequence.

[0014] In some embodiments, the transparent display layer includes a first adhesive film layer, glass, a display layer, and a second adhesive film layer arranged in sequence; or, the transparent display layer includes a first adhesive film layer, glass, a display layer, glass, and a second adhesive film layer arranged in sequence.

[0015] In some embodiments, the device further includes a rotating shaft, which is vertically mounted so that the dimming assembly can rotate circumferentially about the rotating shaft.

[0016] In some embodiments, the processor is further configured to directly adjust the transmittance of the dimming component to a transparent state when it is determined from the ambient light intensity that the ambient light in which the car is currently located changes abruptly from bright to dark.

[0017] In some embodiments, the processor is further configured to directly adjust the transmittance of the dimming component to a completely opaque state when it is determined from the ambient light intensity that the current ambient light of the car changes abruptly from dark to bright.

[0018] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a block diagram of a car sunshade device according to an embodiment of the present invention;

[0020] Figure 2 This is a block diagram of a car sunshade device according to another embodiment of the present invention;

[0021] Figure 3 This is a flowchart illustrating the control method of an automotive sunshade device according to an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of an automobile sunshade device according to an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of a dimming component according to an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the structure of a dimming assembly according to another embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the transmittance adjustment relationship according to an embodiment of the present invention. Detailed Implementation

[0026] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0027] The following description of an embodiment of the automotive sunshade device of the present invention is based on the accompanying drawings. Figure 1 As shown, the car sunshade device includes: a first light intensity acquisition unit 10, a dimming component 20, and a processor 30.

[0028] The first light intensity acquisition unit 10 is connected to the processor 30. The first light intensity acquisition unit 10 is used to acquire the ambient light intensity and send the ambient light intensity to the processor 30. The processor 30 is connected to the dimming component 20. The processor 30 is used to adjust the transmittance of the dimming component 20 according to the ambient light intensity.

[0029] As an example, the ambient light intensity is collected by the first light intensity acquisition unit 10, and the collected ambient light intensity is converted into a digital signal value and sent to the processor 30. The processor 30 determines whether the current ambient light intensity is too strong. If so, the transmittance of the dimming component 20 is adjusted to prevent the light intensity from affecting the driver's normal driving.

[0030] In some embodiments, such as Figure 2 As shown, the car sunshade device also includes a camera 40, which is used to acquire an image of the driver's face and send the image to a processor 30; the processor 30 is also used to extract facial features corresponding to the facial image to determine the driver's eye area based on the facial features.

[0031] In some embodiments, the car sunshade device further includes: a second light intensity acquisition unit 50, which is used to acquire light intensity data of the driver's face and send the light intensity data of the driver's face to the processor 30; the processor 30 is also used to extract the eye light intensity corresponding to the driver's eye area based on the light intensity data of the driver's face and the driver's eye area.

[0032] In other words, the second light intensity acquisition unit 50 can acquire light intensity data of the driver's face. Specifically, this facial light intensity data can include the light intensity corresponding to multiple regions. After determining the driver's eye region (i.e., the current location of the driver's eyes) based on the facial image, the corresponding eye light intensity can be determined based on the driver's eye region and the facial light intensity data. This enhances the accuracy of subsequent sun shading adjustments. It is understandable that when blocking light with the sun visor, the eyes may be partially blocked, resulting in lower light intensity, while the cheeks and chin may remain unblocked, resulting in higher light intensity. In this case, broadly using facial light intensity data to adjust the sun visor's transmittance may lead to unsatisfactory results, with the driver's eye light intensity still being too high after adjustment.

[0033] In some embodiments, the processor 30 adjusts the transmittance of the dimming component 20 according to the ambient light intensity, including: the processor 30 queries a light intensity-voltage lookup table according to the ambient light intensity to determine whether a standard voltage value corresponding to the ambient light intensity is stored in the light intensity-voltage lookup table; when a standard voltage value corresponding to the ambient light intensity is stored in the light intensity-voltage lookup table, the processor 30 adjusts the operating voltage of the dimming component 20 according to the standard voltage value to change the transmittance of the dimming component 20.

[0034] As an example, when the light intensity and voltage lookup table stores the standard voltage value corresponding to the current ambient light intensity, the operating voltage of the dimming component 20 is linearly increased until the operating voltage of the dimming component 20 reaches the standard voltage value; thus, when the voltage is increased, the material in the dimming layer moves, reducing the light transmittance of the dimming component 20.

[0035] In some embodiments, when the standard voltage value corresponding to the ambient light intensity is not stored in the light intensity and voltage lookup table, it is determined whether the eye light intensity is greater than a preset light intensity threshold; when the eye light intensity is greater than the preset light intensity threshold, the operating voltage of the dimming component 20 is adjusted so that the eye light intensity in the driver's eye area is equal to the preset light intensity threshold.

[0036] As an example, assuming the acquired light intensity to the eye is R1, R1 is compared with a preset light intensity threshold R0 (which can be understood as the comfortable light intensity for the eyes). If R1 is greater than R0, it is considered that the eyes are currently being stimulated by light. The processor 30 adjusts the transmittance of the dimming component 20. Then, the voltage is gradually increased according to a preset method (e.g., a linear increase in voltage; or an increase in voltage according to a preset curve, etc.). Simultaneously, during the gradual increase in voltage, R1 is continuously acquired (that is, R1 is acquired in real time during the voltage increase). It is determined in real time whether R1 is greater than R0. If it is, the voltage increase continues; if not, it indicates that the current light intensity to the eye is at the comfortable light intensity for the eyes, and the voltage increase is stopped.

[0037] In some embodiments, when the operating voltage of the dimming component 20 is adjusted and the light intensity in the driver's eye area is equal to a preset light intensity threshold, the current operating voltage of the dimming component 20 is obtained, and the current operating voltage of the dimming component 20 and the ambient light intensity are associated and stored in a light intensity and voltage lookup table.

[0038] In other words, when R1 equals R0, the operating voltage of the current dimming component 20 is obtained; and the operating voltage of the current dimming component 20 and the ambient light intensity are associated and stored in the light intensity and voltage lookup table; thus, when the ambient light intensity is obtained later, the transmittance can be adjusted directly according to the ambient light intensity and the light intensity and voltage lookup table; there is no need to obtain R1.

[0039] As a specific embodiment of the present invention, the car sunshade device includes a first light intensity acquisition unit, a dimming component, a processor, a camera, and a second light intensity acquisition unit; such as Figure 3 As shown, the control method for this car sunshade includes the following steps:

[0040] S301 acquires ambient light intensity through the first light intensity acquisition unit.

[0041] S302, determine whether the light intensity and voltage lookup table stores the standard voltage value corresponding to the ambient light intensity; if yes, proceed to step S303; if no, proceed to step S304.

[0042] S303 adjusts the operating voltage of the dimming component according to the standard voltage value to change the light transmittance of the dimming component.

[0043] S304 acquires a facial image of the driver through a camera, extracts the facial features corresponding to the facial image, and determines the driver's eye area based on the facial features.

[0044] S305: The driver's face light intensity data is acquired through the second light intensity acquisition unit, and the eye light intensity corresponding to the driver's eye area is extracted based on the driver's face light intensity data and the driver's eye area.

[0045] S306, determine whether the light intensity at the eye is greater than the preset light intensity threshold; if so, proceed to step S307.

[0046] S307 adjusts the operating voltage of the dimming component so that the light intensity in the driver's eye area is equal to the preset light intensity threshold.

[0047] S308, obtain the current operating voltage of the dimming component, and associate the current operating voltage of the dimming component with the ambient light intensity and store it in the light intensity-voltage lookup table.

[0048] In some embodiments, such as Figure 2 , Figure 4 and Figure 5As shown, the car sunshade also includes a switch assembly 60, which is connected to the processor 30. The switch assembly 60 is used to acquire the driver's operation commands. The dimming assembly 20 is a dimmable transparent display assembly 500, which includes a dimming layer 501 and a transparent display layer 502. The processor 30 is also used to adjust the light transmittance of the dimming layer 501 according to the operation commands and display the driver's facial image acquired by the camera 40 on the transparent display layer 502.

[0049] It should be noted that the switch assembly 60 can acquire the driver's operation commands in various ways; for example, the switch assembly 60 may include two buttons, one button representing an increase in light transmittance and the other button representing a decrease in light transmittance, thereby acquiring the driver's adjustment command for light transmittance; or, it may also include a third button, which indicates that the dimming assembly is directly put into an opaque mode; or, the switch assembly 60 may be a multi-functional touch switch, so as to acquire the driver's operation commands through the multi-functional touch switch.

[0050] As an example, when the driver's operation command is received through the switch component 60, it indicates that the driver needs to use the "makeup mirror" function. At this time, the transmittance of the dimming layer 501 is adjusted according to the operation command so that the dimming layer 501 is in a dark state and opaque. Then, the driver's facial image is acquired through the camera 40 and displayed through the transparent display layer 502 to realize the "makeup mirror" function.

[0051] In some embodiments, such as Figure 5 As shown, the dimming layer 501 includes a first substrate 503, a first electrode layer 504, a dimming material layer 505, a second electrode layer 506, and a second substrate 507 arranged in sequence.

[0052] In some embodiments, such as Figure 5 and Figure 6 As shown, the transparent display layer 502 includes a first adhesive film layer 508, a glass 509, a display layer 510, and a second adhesive film layer 511 arranged in sequence; or, the transparent display layer 502 includes a first adhesive film layer 508, a glass 509, a display layer 510, a glass 509, and a second adhesive film layer 511 arranged in sequence.

[0053] As an example, a protective glass layer is also provided on the outside of the dimming component 20. Preferably, the thickness of the protective glass layer can be selected from 0.7mm, 1.6mm, or 2.1mm. Specifically, an adhesive film layer can also be provided between the dimming layer 501 and the protective layer to further protect the dimming layer 501.

[0054] As an example, a plate-shaped electrode (i.e., a first electrode layer 504) is coated on the side of the first substrate 503 facing the dimming material layer 505, and a plate-shaped electrode (i.e., a second electrode layer 506) is coated on the side of the second substrate 507 facing the dimming material layer 505. The material within the dimming material layer 505 moves under the influence of an electric field 1-2 between the first electrode layer 504 and the second electrode layer 506, controlling the light transmittance. Under normal conditions, there is no electric field between the first substrate 503 and the second substrate 507, the dimming material layer 505 is transparent, the transparent display layer 502 is inactive (does not display images), and the dimming assembly 20 is transparent.

[0055] In some embodiments, such as Figure 4 As shown, the car sunshade also includes a rotating shaft 70; the rotating shaft 70 is mounted vertically so that the dimming assembly 20 can rotate circumferentially around the rotating shaft 70.

[0056] It is understandable that by rotating the axis 70, when the dimming component 20 rotates circumferentially around the axis 70 and rotates to the side of the driver, it can block the light from the side and prevent the light from irritating the driver's eyes.

[0057] As an example, when it is necessary to block side light, the driver can rotate the dimming assembly 20 to the left. The rotation shaft 70 has a built-in rotation signaler that outputs a rotation electrical signal to the processor 30. The processor 30 will issue an execution command to the dimming assembly 20, and the voltage between electric fields 1-2 will increase to its maximum value, so that the dimming layer 501 is in a dark state and opaque.

[0058] When blocking side light, if the driver needs to increase the light transmittance of the dimming component 20, they can operate the switch component 60 (for example, a multi-function touch switch). The processor 30 sends an execution command to the dimming component 20 based on the duration of the driver's touch, reducing the voltage V2 between electric fields 1 and 2. A shorter touch time results in a smaller voltage V2 value; a longer touch time results in a larger voltage V2 value. A schematic diagram showing the relationship between the light transmittance of the dimming layer 501 and the touch time is shown below. Figure 7 .

[0059] In some embodiments, the processor 30 is further configured to directly adjust the transmittance of the dimming component 20 to a transparent state when it is determined from the ambient light intensity that the ambient light in which the car is currently located changes abruptly from bright to dark.

[0060] In some embodiments, the processor 30 is further configured to directly adjust the transmittance of the dimming component 20 to a completely opaque state when it is determined from the ambient light intensity that the current ambient light of the car changes abruptly from dark to bright.

[0061] There are several ways to determine whether the ambient light around a car changes abruptly from bright to dark or from dark to bright.

[0062] As an example, determine whether the difference in ambient light intensity between two moments is greater than a preset threshold; if so, consider the current ambient light to have changed abruptly from bright to dark; or, determine whether the difference in ambient light intensity between two moments is less than a preset threshold; if so, consider the current ambient light to have changed abruptly from dark to bright; or, generate an ambient light intensity change curve in real time to determine whether the current ambient light has changed abruptly from bright to dark / from dark to bright.

[0063] Thus, when ambient light abruptly changes from bright to dark (for example, when a vehicle enters a tunnel or other space obstructed by objects), the light transmittance of the dimming component is directly adjusted to a transparent state. This greatly improves the efficiency of responding to special situations, prevents the driver's vision from being obstructed, and enhances driving safety. Conversely, when ambient light abruptly changes from dark to bright (for example, when a vehicle exits a tunnel or other space obstructed by objects), the light transmittance of the dimming component is directly adjusted to a completely opaque state, preventing sudden excessive light from affecting the driver's vision.

[0064] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0065] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0066] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0067] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0069] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0070] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0071] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A car sunshade device, characterized in that, include: First light intensity acquisition unit, dimming component and processor; The first light intensity acquisition unit is connected to the processor. The first light intensity acquisition unit is used to acquire the ambient light intensity and send the ambient light intensity to the processor. The processor is connected to the dimming component and is used to adjust the transmittance of the dimming component according to the ambient light intensity; it also includes a camera used to acquire a facial image of the driver and send the facial image to the processor. The processor is further configured to extract facial features corresponding to the facial image to determine the driver's eye region based on the facial features; it also includes a switch component connected to the processor, the switch component being configured to acquire the driver's operation commands; the dimming component is a dimmable transparent display component, the dimmable transparent display component including a dimming layer and a transparent display layer, the processor being further configured to adjust the light transmittance of the dimming layer according to the operation commands, and display the driver's facial image acquired by the camera on the transparent display layer.

2. The car sunshade device as described in claim 1, characterized in that, It also includes a second light intensity acquisition unit, which is used to acquire light intensity data of the driver's face and send the light intensity data of the driver's face to the processor; The processor is also used to extract the eye light intensity corresponding to the driver's eye area based on the driver's facial light intensity data and the driver's eye area.

3. The car sunshade device as described in claim 2, characterized in that, The processor adjusts the transmittance of the dimming component according to the ambient light intensity, including: The processor queries the light intensity and voltage lookup table based on the ambient light intensity to determine whether the light intensity and voltage lookup table stores the standard voltage value corresponding to the ambient light intensity; When the light intensity and voltage lookup table stores the standard voltage value corresponding to the ambient light intensity, the operating voltage of the dimming component is adjusted according to the standard voltage value to change the light transmittance of the dimming component.

4. The car sunshade device as described in claim 3, characterized in that, If the standard voltage value corresponding to the ambient light intensity is not stored in the light intensity and voltage comparison table, determine whether the light intensity at the eye is greater than a preset light intensity threshold. When the light intensity in the eye area is greater than a preset light intensity threshold, the operating voltage of the dimming component is adjusted so that the light intensity in the driver's eye area is equal to the preset light intensity threshold.

5. The car sunshade device as described in claim 4, characterized in that, When the operating voltage of the dimming component is adjusted and the light intensity in the driver's eye area is equal to the preset light intensity threshold, the current operating voltage of the dimming component is obtained, and the current operating voltage of the dimming component and the ambient light intensity are associated and stored in the light intensity and voltage lookup table.

6. The car sunshade device as described in claim 1, characterized in that, The dimming layer includes a first substrate, a first electrode layer, a dimming material layer, a second electrode layer, and a second substrate arranged in sequence.

7. The car sunshade device as described in claim 1, characterized in that, The transparent display layer includes a first adhesive film layer, glass, a display layer, and a second adhesive film layer arranged in sequence. Alternatively, the transparent display layer may include a first adhesive film layer, glass, a display layer, glass, and a second adhesive film layer arranged in sequence.

8. The car sunshade device as described in claim 1, characterized in that, Also includes: A rotating shaft is mounted vertically so that the dimming assembly can rotate circumferentially around the rotating shaft.

9. The car sunshade device as described in claim 1, characterized in that, The processor is also used to directly adjust the transmittance of the dimming component to a transparent state when it is determined that the ambient light around the car changes abruptly from bright to dark based on the intensity of the ambient light.

10. The car sunshade device as claimed in claim 1, characterized in that, The processor is also used to directly adjust the transmittance of the dimming component to a completely opaque state when it determines that the ambient light around the car changes abruptly from dark to bright based on the ambient light intensity.

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