CN114435092A

CN114435092A - Intelligent sun shield

Info

Publication number: CN114435092A
Application number: CN202011220914.0A
Authority: CN
Inventors: 李国文; 赵阳光; 钱宇晨; 王慧杰
Original assignee: Suzhou Cuiwei Intelligent Technology Co ltd
Current assignee: Suzhou Cuiwei Intelligent Technology Co ltd
Priority date: 2020-11-05
Filing date: 2020-11-05
Publication date: 2022-05-06

Abstract

The invention discloses an intelligent sun shield which comprises a sun shielding area, a mirror area and a control unit, wherein the sun shielding area comprises a first electric control dimming device, and the first electric control dimming device is electrically connected with the control unit. The intelligent sun shield can intelligently adjust light, comprises a mirror surface area, and is reasonable in structure and convenient and fast to use.

Description

Intelligent sun shield

Technical Field

The invention relates to the technical field of automobile accessories, in particular to an intelligent sun shield.

Background

At present, traditional car sun visor board adopts materials such as plastics, cloth, organic glass or aluminium foil preparation mostly, though can play the effect of sheltering from sunshine, nevertheless because its luminousness is fixed itself, can't still influence driver's field of vision under the external environment automatically regulated shading effect according to external environment, still can bring the potential safety hazard that can not predict under the condition a bit. In recent years, a sun visor manufactured by using a liquid crystal technology is gradually favored by people because ambient light can be automatically adjusted, but the sun visor in the market at present removes a small mirror originally embedded in the sun visor, loses partial functions such as appearance finishing and makeup, or has the problem that an ideal sun-shading effect cannot be achieved due to a low light transmittance adjusting range.

Disclosure of Invention

The invention aims to provide an intelligent sun visor capable of intelligently adjusting light and comprising a mirror surface area, which is reasonable in structure and convenient and fast to use, aiming at the technical problems in the prior art.

The invention adopts the following technical scheme:

the utility model provides an intelligence sunshading board, intelligence sunshading board includes that sunshade is regional, mirror surface region and the control unit, the sunshade is regional including first automatically controlled device of adjusting luminance, first automatically controlled device of adjusting luminance with the control unit electric connection and by its light transmittance is adjusted to the control unit automatically controlled.

Preferably, the mirror region is located inside or adjacent to the sunshade region.

Preferably, the mirror area is independently provided outside the sunshade area.

Preferably, the lighting device further comprises a light sensor electrically connected to the control unit, the light sensor detects the change of ambient light and feeds back information to the control unit, and the control unit electrically controls and adjusts the voltage applied to the first electrically-controlled dimming device according to the information.

Preferably, the first electrically controlled dimming device comprises a liquid crystal dimming layer or a suspended particle dimming layer.

Preferably, the mirror area is a glass-coated mirror.

Preferably, the mirror area includes a second electrically controlled dimming device electrically connected to the control unit, and the second electrically controlled dimming device is switchable between a mirror state and a non-mirror state.

Preferably, the second electronic control dimming device includes a suspended particle dimming layer, and the suspended particle dimming layer includes an upper substrate, an upper transparent electrode, a suspended particle layer, a lower transparent electrode, and a lower substrate, which are sequentially disposed.

Preferably, the second electrically controlled dimming device comprises a first polarizing layer, a liquid crystal dimming layer and a second polarizing layer in sequence along a direction away from a viewer.

Preferably, at least one of the first polarizing layer and the second polarizing layer is a reflective polarizing layer.

The intelligent sun shield can intelligently adjust light, comprises a mirror surface area, and is reasonable in structure and convenient and fast to use.

Drawings

The invention may be better understood by reference to the following description of embodiments of the invention taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic plan view of a smart sun visor according to an embodiment of the present invention;

fig. 2 is a schematic cross-sectional view of a sunshade area in the smart sun visor according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a mirror area in a smart sun visor according to an embodiment of the present invention;

fig. 4 is a schematic diagram of an optical path when a sunshade area in the smart sun visor according to the embodiment of the present invention is in a state of the highest transmittance;

fig. 5 is a schematic diagram of an optical path of a sunshade region in an intelligent sunshade according to an embodiment of the present invention when the sunshade region is in a state of a middle transmittance;

fig. 6 is a schematic diagram of an optical path when a sunshade area in the smart sun visor according to the embodiment of the present invention is in a state of lowest transmittance;

fig. 7 is a schematic diagram of the optical path of the mirror area in the smart sun visor according to the embodiment of the present invention when the reflectivity is at the lowest state;

fig. 8 is a schematic diagram of the light path when the reflectivity of the mirror area in the intelligent sun visor is in the intermediate value state according to the embodiment of the present invention;

fig. 9 is a schematic diagram of the light path when the reflectivity of the mirror area in the intelligent sun visor is at the highest state according to the embodiment of the present invention;

fig. 10 is a schematic cross-sectional view of another mirror area in the smart sun visor according to the embodiment of the present invention;

fig. 11 is a schematic cross-sectional view of a mirror area in a smart sun visor according to an embodiment of the present invention;

fig. 12 is a schematic plan view of a smart visor including additional areas in accordance with an exemplary embodiment of the present invention;

fig. 13 is a schematic plan view of a mirror area outside a sunshade area in a smart sun visor according to an embodiment of the present invention.

Detailed Description

In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, it will be apparent to those skilled in the art that the present invention may be practiced without these specific details. The illustrated exemplary embodiments of the invention are provided for purposes of illustration only and are not intended to be limiting of the invention. Therefore, it is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto.

The smart sun visor according to the embodiment of the present invention will be described in detail with reference to the accompanying drawings.

Fig. 1 is a schematic plan view illustrating a smart sun visor according to an embodiment of the present invention, fig. 2 is a schematic sectional view illustrating a sun-shading area in the smart sun visor according to an embodiment of the present invention, which is shown in fig. 1 and 2, the smart sun visor according to an embodiment of the present invention includes a sun-shading area 1, mirror surface region 2 and the control unit (not shown), sunshade region 1 includes first automatically controlled light modulation device 10, first automatically controlled light modulation device and the control unit electric connection and by its light transmittance is adjusted in the control unit automatically controlled, the control unit is located the back region of sunshading board or outside other regions and through circuit and first automatically controlled light modulation device 10 electric connection, the control unit can be according to user operation or received ambient signal to first automatically controlled light modulation device control, realize that first automatically controlled light modulation device adjusts its light transmittance. As shown in fig. 1, in this embodiment, the mirror region 2 is located inside the sunshade region 1 and surrounded by the sunshade region 1, but this embodiment is not limited thereto, and the mirror region 2 may also be disposed adjacent to the sunshade region 1 and located at one side or any one edge of the sunshade region 1, which is not described again.

In the present invention, the first electrically controlled dimming device 10 may include a liquid crystal dimming layer or a suspended particle dimming layer, and in this embodiment, the first electrically controlled dimming device 10 is described by taking the liquid crystal dimming layer as an example. As shown in fig. 2, the first electrically controlled dimming device 10 in the sunshade region 1 sequentially includes an absorption-type polarizing layer 211, a liquid crystal dimming layer 4, and an absorption-type polarizing layer 212 in a direction away from the viewer, and further, as shown in fig. 2, the liquid crystal dimming layer 4 includes a first transparent substrate 13, a liquid crystal layer 14, and a second transparent substrate 15, and in this embodiment, more specifically, the liquid crystal dimming layer 4 includes a first transparent substrate 13, a first transparent electrode (not shown), a first alignment layer (not shown), a liquid crystal layer 14, a second alignment layer (not shown), a second transparent electrode (not shown), and a second transparent substrate 15, which are sequentially disposed, and a frame sealant (not shown) is further disposed around the liquid crystal layer 14 for sealing. In this embodiment, the first transparent electrode and the second transparent electrode are operatively connected to the control unit, and the arrangement structure of the liquid crystal molecules is adjusted by applying different voltages to the liquid crystal molecules in the liquid crystal layer 14 through the control unit, thereby adjusting the transmittance of the intelligent sun shade sheet.

As shown in fig. 2, in the present embodiment, the first electrically controlled dimming device 10 further includes a protection layer 11 located outside the absorption type polarizing layer 211 and a protection layer 17 located outside the absorption type polarizing layer 212, and the protection layer plays a role in protecting the absorption type polarizing layer from being contaminated or scratched. As shown in fig. 2, further, an adhesive 12 is further included between the protective layer 11 and the absorbing polarizing layer 211, and an adhesive layer 16 is also included between the protective layer 17 and the absorbing polarizing layer 212, the adhesive layer 12 and the adhesive layer 16 perform an adhesive fixing function, and the adhesive layer 12 and the adhesive layer 16 are, for example, OCA, OCR, SCA, EVA, PVB, transparent double-sided tape, and the like.

In this embodiment, the absorption-type polarization layer 211 can absorb the polarized light parallel to its absorption axis and can transmit the polarized light perpendicular to its absorption axis, the liquid crystal layer 14 can change the polarization direction of the polarized light entering it, so as to adjust the polarization direction of the polarized light to rotate and change the polarization direction, the absorption-type polarization layer 212 can absorb the polarized light parallel to its absorption axis and can transmit the polarized light perpendicular to its absorption axis, in this embodiment, according to the different types of liquid crystal materials in the selected liquid crystal layer 14, the absorption axis polarization direction of the absorption-type polarization layer 211 and the absorption axis polarization direction of the absorption-type polarization layer 212 can be set to be parallel to each other or perpendicular to each other.

Fig. 3 is a schematic cross-sectional structure diagram of a mirror area in an intelligent sun visor according to an embodiment of the present invention, in this embodiment, the mirror area 2 includes a second electrically controlled dimming device 20 electrically connected to a control unit, and the second electrically controlled dimming device 20 is switchable between a mirror state and a non-mirror state. In this embodiment, the second electrically controlled dimming device 20 is described by taking a liquid crystal dimming device as an example. The second electrically controlled dimming device 20 sequentially includes a first polarizing layer, a liquid crystal dimming layer, and a second polarizing layer in a direction away from the viewer, and at least one of the first polarizing layer and the second polarizing layer is a reflective polarizing layer. For example, the second electrically controlled dimming device 20 includes a reflective polarizing layer 311, a liquid crystal dimming layer 4, and a reflective polarizing layer 312 in sequence along a direction away from the viewer, and further, as shown in fig. 3, the liquid crystal dimming layer 4 includes a first transparent substrate 13, a liquid crystal layer 14, and a second transparent substrate 15, in this embodiment, more specifically, the liquid crystal dimming layer 4 includes a first transparent substrate 13, a first transparent electrode (not shown), a first alignment layer (not shown), a liquid crystal layer 14, a second alignment layer (not shown), a second transparent electrode (not shown), and a second transparent substrate 15 in sequence, and the liquid crystal layer 14 is sealed by a sealant (not shown) around the liquid crystal layer 14. In the present embodiment, the first transparent electrode and the second transparent electrode are operatively connected to the control unit, and the arrangement structure of the liquid crystal molecules is adjusted by applying different voltages to the liquid crystal molecules in the liquid crystal layer 14 by the control unit, thereby adjusting the transmittance and reflectance of the mirror surface region.

In this embodiment, the reflective polarizing layer 311 and the reflective polarizing layer 312 can reflect the polarized light parallel to the reflection axis thereof and transmit the polarized light perpendicular to the reflection axis thereof, and the liquid crystal layer 14 can change the polarization direction of the polarized light entering the liquid crystal layer, so as to adjust the polarization direction of the polarized light to rotate and change the polarization direction.

Fig. 4 is a schematic optical path diagram of a sunshade area in an intelligent sun visor according to an embodiment of the present invention when the transmittance of the sunshade area is the highest, as shown in fig. 4, when the external natural light is low in intensity, the external natural light passes through the protective layer 11 and the adhesive layer 12 and becomes polarized light a after passing through the absorption type polarization layer 211, and the polarized light a changes its polarization direction after passing through the liquid crystal layer 14 and becomes polarized light b.

Fig. 5 is a schematic diagram of an optical path when a sunshade area in the smart sun visor is in a state of a middle transmittance, as shown in fig. 5, after the external light intensity is gradually increased and the external natural light enters the sunshade area, the external natural light passes through the protective layer 11 and the adhesive layer 12 and becomes polarized light a after passing through the absorption type polarization layer 211, the polarized light a is changed in polarization direction to a certain extent after passing through the liquid crystal layer 14, and can be decomposed into polarized light a ' and polarized light b ', since the absorption axis polarization direction of the absorption type polarization layer 211 is perpendicular to the absorption axis polarization direction of the absorption type polarization layer 212, the polarized light b ' can pass through the absorption type polarization layer 212, the polarized light a ' is absorbed by the absorption type polarization layer 212, and the polarized light b ' passes through the adhesive layer 16 and the protective layer 17 and then exits from the smart sun visor. The stronger the external light intensity is, the larger the ratio of the polarized light a 'to the polarized light b' is adjusted by the control unit, at the moment, the transmittance is gradually reduced from more than 35%, and the minimum transmittance can be reduced to within 3%.

Fig. 6 is a schematic diagram of an optical path when a sunshade area in an intelligent sun visor according to an embodiment of the present invention is in a state of lowest transmittance, as shown in fig. 6, after an external light intensity exceeds a certain set threshold value, and after the external natural light enters the sunshade area, the external natural light passes through the protective layer 11 and the adhesive layer 12, and passes through the absorption type polarization layer 211 to become a polarized light a, and a polarization direction of the polarized light a passes through the liquid crystal layer 14, and the polarization direction of the polarized light a is not changed, because an absorption axis polarization direction of the absorption type polarization layer 211 is perpendicular to an absorption axis polarization direction of the absorption type polarization layer 212, the polarized light a is absorbed by the absorption type polarization layer 212, and almost no light is emitted from the sunshade area, at this time, the transmittance of the external natural light is the lowest, and the lowest transmittance may be within 3%.

Fig. 7 is a schematic diagram of the optical path when the mirror surface area in the smart sun visor according to the embodiment of the present invention is in the lowest reflectivity state, as shown in fig. 7, specifically, when the external light intensity is low, the natural light in the vehicle passes through the protective layer 17 and the adhesive layer 16 and enters the reflective polarizing layer 312, the light B1 with the polarization direction parallel to the reflection axis of the reflective polarizing layer 312 is reflected back, the light with the polarization direction perpendicular to the reflection axis of the reflective polarizing layer 312 passes through the reflective polarizing layer 312 and becomes the polarized light a, the polarization direction of the polarized light a is changed after passing through the liquid crystal layer 14 and becomes the polarized light B, in this embodiment, the polarization direction of the reflection axis of the reflective polarizing layer 311 and the polarization direction of the reflection axis of the reflective polarizing layer 312 are perpendicular to each other, the polarized light B can pass through the reflective polarizing layer 311, the polarized light B then passes through the adhesive layer 12 and the protective layer 11 and exits from the mirror surface area, at the moment, the mirror surface area is in a state that the light transmittance of the external natural light is highest and the reflectivity is lowest, the reflectivity of the mirror surface area is about 40% -60%, and the mirror surface area has a semi-transparent mirror surface effect.

Fig. 8 is a schematic diagram of the optical path when the reflectivity of the mirror region in the smart sun visor is in the intermediate state according to the embodiment of the present invention, as shown in fig. 8, when the external light intensity is gradually increased, the natural light in the vehicle passes through the protective layer 17 and the adhesive layer 16, and enters the reflective polarizing layer 312, the light B1 with the polarization direction parallel to the reflection axis of the reflective polarizing layer 312 is reflected back, the light with the polarization direction perpendicular to the reflection axis of the reflective polarizing layer 312 passes through the reflective polarizing layer 312 and becomes the polarized light a, the polarization direction of the polarized light a after passing through the liquid crystal layer 14 is changed to a certain extent and can be decomposed into the polarized light a 'and the polarized light B', in this embodiment, the polarization direction of the reflection axis of the reflective polarizing layer 311 is perpendicular to the reflection axis of the reflective polarizing layer 312, the polarized light B 'can pass through the reflective polarizing layer 311, and the polarized light a' is reflected back, after the polarized light a 'passes through the liquid crystal layer 14, the polarization direction is changed to a certain extent again, and the polarized light a'1 and the polarized light B '1 can be decomposed, because the polarization direction of the reflection axis of the reflection-type polarization layer 311 is perpendicular to the polarization direction of the reflection axis of the reflection-type polarization layer 312, the polarized light B'1 is reflected back to the liquid crystal layer 14, the polarized light a '1 can pass through the reflection-type polarization layer 312 and then is emitted from the mirror surface area after passing through the adhesive layer 12 and the protective layer 11, the stronger the external light intensity is, the larger the reflected light a'1 is, the higher the reflectivity of the mirror surface area is, the reflectivity of the mirror surface area can be gradually increased from about 40% -60% to more than 70%, and the mirror surface effect is brighter and clearer.

Fig. 9 is a schematic diagram of an optical path when the reflectivity of the mirror region in the smart sun visor is at the highest state according to an embodiment of the present invention, as shown in fig. 9, when the external light intensity exceeds a certain threshold, the natural light in the vehicle passes through the protective layer 17 and the adhesive layer 16, and enters the reflective polarizing layer 312, the light B1 with the polarization direction parallel to the reflection axis of the reflective polarizing layer 312 is reflected back, the light with the polarization direction perpendicular to the reflection axis of the reflective polarizing layer 312 passes through the reflective polarizing layer 312 and becomes the polarized light a, the polarization direction of the polarized light a does not change after passing through the liquid crystal layer 14, in this embodiment, the polarization direction of the reflection axis of the reflective polarizing layer 311 is perpendicular to the polarization direction of the reflection axis of the reflective polarizing layer 312, the polarized light a is reflected back by the reflective polarizing layer 311, and the polarization direction of the reflected polarized light a does not change after passing through the liquid crystal layer 14, because the polarization direction of the reflection axis of the reflection-type polarizing layer 311 is perpendicular to the polarization direction of the reflection axis of the reflection-type polarizing layer 312, the polarized light a can pass through the polarizing layer 312, and can be emitted from the mirror surface area after passing through the adhesive layer 16 and the protective layer 17, the transmittance of the external natural light in the mirror surface area is the lowest, the reflectance is the highest, at this time, the reflectance is more than 70%, and the mirror surface imaging effect is bright and clear.

In an embodiment of the present invention, the lighting device further includes a light sensor (not shown) electrically connected to the control unit, the light sensor detects a change of the ambient light and feeds back information to the control unit, and the control unit electrically controls and adjusts the voltage applied to the first electrically controlled dimming device 10 according to the fed-back information. Preferably, in this embodiment, the second light modulation device 20 is also electrically connected to the control unit, and details are not repeated.

In the present invention, when the mirror area adopts the liquid crystal dimming layer, the structure is not limited to the above structure, fig. 10 is another schematic cross-sectional structure diagram of the mirror area in the intelligent sun visor according to the specific embodiment of the present invention, as shown in fig. 10, the second electrically controlled dimming device of the mirror area sequentially includes the absorption type polarizing layer 211, the liquid crystal dimming layer 4, and the reflection type polarizing layer 312 along the direction away from the observer, and other portions are substantially the same as the above structure, and are not repeated, and the purpose of adjusting the transmittance and reflectance of the mirror area by the control unit can also be achieved by adopting the structure of the second dimming device, so that the direct control conversion of the high transmittance or the high reflectance can be achieved. Fig. 11 is a schematic cross-sectional structure diagram of a mirror surface region in an intelligent sun visor according to a specific embodiment of the present invention, as shown in fig. 11, the second electrically controlled dimming device in the mirror surface region may further include a reflective polarizing layer 311, a liquid crystal dimming layer 4, and an absorptive polarizing layer 212 in sequence along a direction away from an observer, and other portions are substantially the same as the above structure, and are not repeated here, and the second dimming device with this structure may also achieve the purpose of adjusting the transmittance and the reflectance of the mirror surface region through the control unit, and achieve direct control conversion of high transmittance or high reflectance. The intelligent sun shield can respectively control the sun-shading area and the reflection area, realizes various combined effects such as integral sun-shading, integral perspective, synchronous realization of sun-shading and mirror surfaces, synchronous realization of perspective and mirror surfaces and the like, has various sun-shading modes, can integrate the mirror surface area and the sun-shading area, and is attractive, elegant and convenient to use.

In the present invention, the sunshade area and the mirror area are not limited to the liquid crystal light modulation layer, for example, the light transmittance can be adjusted by using a suspended particle light modulation layer instead of the liquid crystal light modulation layer, the suspended particle light modulation layer includes, for example, an upper substrate, an upper transparent electrode, a suspended particle layer, a lower transparent electrode, and a lower substrate, which are sequentially disposed, and the upper transparent electrode and the lower transparent electrode are both electrically connected to the control unit, and are used for controlling the voltage applied to the two sides of the suspended particle layer to adjust the light transmittance thereof, which is not described in detail. The mirror surface area may be formed by adding a reflective coating, a reflective film or a reflective dielectric film on the basis of a liquid crystal dimming layer or a suspended particle dimming layer, and the structure is not described in detail as long as the mirror surface reflection function of the mirror surface area can be achieved.

Fig. 12 is a schematic plan view illustrating that the intelligent sun visor further includes other regions in the intelligent sun visor according to the specific embodiment of the present invention, as shown in fig. 12, in addition to the sun shading region 1 and the mirror region 2, the intelligent sun visor of the present invention may further include other regions 3, where the other regions 3 may be light transmission regions or non-light transmission regions, and the material may be made of a high polymer material, a metal material or other non-metal material according to actual aesthetics or installation needs, and is not described again.

As shown in fig. 10, in the intelligent sun visor of the present invention, the mirror area may be located at any position of the whole intelligent sun visor, but is not limited thereto, fig. 13 is a schematic plane structure in which the mirror area is located outside the sun-shading area and is independently set, as shown in fig. 13, the mirror area may also be located outside the sun-shading area and is independently set, and the mirror area is located at a partial position of the other area 3 in fig. 13, but is not limited thereto, or other areas may not be set, the mirror area and the sun-shading area may be independently and separately set, and the independently set mirror area may be a liquid crystal dimming layer structure or a suspended particle dimming layer structure electrically connected to the control unit, or may be a conventional glass-coated mirror, and is not particularly limited. The shape of the mirror surface area can be square, rectangular, circular, oval or other polygonal shapes, and the mirror surface area is attractive and elegant.

The intelligent sun visor disclosed by the invention not only can realize the function of automatically and intelligently or manually adjusting the transmittance of the sun visor according to the intensity of ambient light, but also has a mirror surface function, and is reasonable in structure and convenient and fast to use.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. The intelligent sun shield is characterized by comprising a sun shielding area, a mirror surface area and a control unit, wherein the sun shielding area comprises a first electric control dimming device, and the first electric control dimming device is electrically connected with the control unit and electrically controls the control unit to adjust the light transmittance of the control unit.

2. The smart visor of claim 1, wherein the mirror area is located inside or adjacent to the sun shading area.

3. The smart visor of claim 1 wherein the mirror area is independently located outside the visor area.

4. The intelligent sun visor of claim 1, further comprising a light sensor electrically connected to the control unit, wherein the light sensor detects a change in ambient light and feeds back information to the control unit, and the control unit electrically controls the voltage applied to the first electrically controlled dimming device according to the information.

5. The smart visor of claim 1, wherein the first electrically controlled dimming device comprises a liquid crystal dimming layer or a suspended particle dimming layer.

6. The smart sun visor of claim 1 wherein the mirror area is a glass coated mirror.

7. The smart sun visor of claim 1 wherein the mirror area comprises a second electrically controlled dimming device electrically connected to the control unit, the second electrically controlled dimming device being switchable between a mirror state and a non-mirror state.

8. The smart sun of claim 7 wherein said second electrically controlled dimming device comprises a suspended particle dimming layer comprising an upper substrate, an upper transparent electrode, a suspended particle layer, a lower transparent electrode and a lower substrate arranged in sequence.

9. The smart sun visor of claim 7 wherein the second electrically controlled dimming device comprises a first polarizing layer, a liquid crystal dimming layer, and a second polarizing layer in that order in a direction away from the viewer.

10. The smart visor of claim 9 wherein at least one of the first polarizing layer and the second polarizing layer is a reflective polarizing layer.