CN220996265U - Adaptive dimming rearview mirror - Google Patents

Abstract

The utility model discloses a self-adaptive dimming rearview mirror, which comprises: a dimming optic; the dimming lens is arranged on the shell component; a first photosensitive element disposed on the housing assembly, the first photosensitive element being at least partially within an interior cavity of the housing assembly; the dimming lens is provided with a first light transmission area and a second light transmission area, the light transmittance of the second light transmission area is higher than that of the first light transmission area, and the second light transmission area is opposite to the first photosensitive element; the main control circuit board is arranged in the shell assembly and is respectively electrically connected with the dimming lens and the first photosensitive element. The liquid crystal at the second light transmission area is controlled by the main control circuit board to always keep relatively high light transmittance, so that the first photosensitive element arranged between the dimming lens and the shell component can accurately identify the light intensity in the environment.

Description

Adaptive dimming rearview mirror

Technical Field

The utility model relates to the technical field of rearview mirrors, in particular to an adaptive dimming rearview mirror.

Background technique

With the popularization of automobiles, especially electric vehicles, driving safety has received more and more attention from people. As a vehicle safety auxiliary facility, the rearview mirror plays a very important role. It can reflect the situation behind the vehicle and expand the driver's field of vision. However, due to the strong light from the rear vehicle and other situations, the light intensity entering the driver's eyes is too high, which is easy to cause a large safety hazard due to the glare of the rearview mirror. Therefore, it is necessary to study the anti-glare rearview mirror. The traditional dimming rearview mirror has a frame, and the photosensitive device is usually set on the frame. Such a setting method will make the rearview mirror as a whole bloated and not beautiful. Therefore, the simple appearance of the frameless dimming rearview mirror on the market is becoming more and more popular with consumers, but the photosensitive device used by the frameless dimming rearview mirror to detect the ambient light behind the car is usually set between the dimming lens and the shell, so that the light and dark state changes of the dimming lens will affect the accuracy of the photosensitive device in detecting the ambient light.

Utility Model Content

The main purpose of the utility model is to provide an adaptive dimming rearview mirror with a wide dimming range and a fast response rate. The dimming lens does not need to be drilled and the dimming is relatively accurate.

To achieve the above-mentioned purpose, the utility model proposes an adaptive dimming rearview mirror, comprising: a dimming lens; a shell assembly, the dimming lens is arranged on the shell assembly; a first photosensitive element, the first photosensitive element is arranged on the shell assembly, and the first photosensitive element is at least partially located in the inner cavity of the shell assembly; the dimming lens comprises a liquid crystal box and a semi-transparent and semi-reflective mirror film, the semi-transparent and semi-reflective mirror film is arranged on a side of the dimming lens close to the shell assembly; the liquid crystal box has a first light-transmitting area and a second light-transmitting area, the transmittances of the second light-transmitting area and the first light-transmitting area can be adjusted respectively, and the second light-transmitting area is arranged opposite to the first photosensitive element; the semi-transparent and semi-reflective mirror film has a first area and a second area, the transmittance of the second area is higher than the transmittance of the first area, and the second area is arranged opposite to the first photosensitive element; a main control circuit board, the main control circuit board is arranged in the shell assembly, and the main control circuit board is electrically connected to the dimming lens and the first photosensitive element respectively.

Furthermore, the liquid crystal box includes a first substrate, a liquid crystal layer, two conductive layers and a second substrate, the first substrate, one of the conductive layers, the liquid crystal layer, the other conductive layer and the second substrate are stacked in sequence, and the conductive layer is electrically connected to the main control circuit board.

Furthermore, the two conductive layers are respectively a first conductive strip and a second conductive strip, a side of the first substrate close to the liquid crystal layer is provided with a plurality of the first conductive strips arranged at intervals, a side of the second substrate close to the liquid crystal layer is provided with a plurality of the second conductive strips arranged at intervals, the first conductive strips and the second conductive strips are arranged alternately, and the first conductive strips and the second conductive strips are electrically connected to the main control circuit board.

Furthermore, the liquid crystal material used in the liquid crystal layer is one of GH, TN, ECB, and Pi-cells.

Furthermore, the conductive layer in the first light-transmitting area and the conductive layer in the second light-transmitting area are insulated from each other, and the main control circuit board is electrically connected to the conductive layers in the first light-transmitting area and the second light-transmitting area, respectively.

Furthermore, the adaptive dimming rearview mirror also includes a second photosensitive element, which is arranged on a side of the housing assembly away from the dimming lens, and the second photosensitive element is electrically connected to the main control circuit board.

Furthermore, the housing assembly comprises a front housing and a rear housing, the front housing is fixedly connected to the rear housing, a through hole is formed on the front housing, and the through hole is arranged opposite to the first photosensitive element.

Furthermore, the adaptive dimming rearview mirror also includes an adhesive layer, one side of the adhesive layer is bonded to the dimming lens, and the other side of the adhesive layer is bonded to the shell assembly.

Furthermore, the adaptive dimming rearview mirror also includes a movable bracket, one end of which is arranged on a side of the shell assembly away from the dimming lens, and the movable bracket is movably connected to the shell assembly.

Compared with the prior art, the beneficial effects of the technical solution of the utility model are:

The adaptive dimming rearview mirror proposed by the utility model uses a liquid crystal box as a dimming device of the rearview mirror, and the dimming range of the liquid crystal box is relatively wider, and the response speed of adjusting the transmittance is fast, which can meet the driver's anti-glare needs in different light intensity environments and improve driving safety; by arranging the first light-transmitting area and the second light-transmitting area on the liquid crystal box, the liquid crystal located in the second light-transmitting area can be controlled by the main control circuit board to always maintain a relatively high transmittance, so that the first photosensitive element arranged between the dimming lens and the shell assembly can accurately identify the light intensity in the environment, so that the liquid crystal in the first light-transmitting area can be adjusted to an appropriate transmittance in time; by arranging the first area and the second area on the semi-transmitting and semi-reflecting mirror film, the transmittance of the second area is higher than that of the first light-transmitting area, thereby reducing the influence of the semi-transmitting and semi-reflecting mirror film on the first photosensitive element identifying ambient light.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is an exploded view of the adaptive dimming rearview mirror of the present invention;

FIG2 is a side elevation view of the adaptive dimming rearview mirror of the present invention;

FIG3 is a cross-sectional view of the liquid crystal box of the present invention;

FIG4 is a schematic structural diagram of the first conductive strip, the liquid crystal layer and the second conductive strip of the present invention;

FIG. 5 is a side rear view of the adaptive rearview mirror of the present invention.

Description of Figure Numbers:

100 dimming lens, 110 first light-transmitting area, 120 second light-transmitting area, 130 first area, 140 second area, 101 liquid crystal box, 102 semi-transparent and semi-reflective mirror film, 1011 first substrate, 1012 liquid crystal layer, 1013 second substrate, 1014 first conductive strip, 1015 second conductive strip;

200 housing assembly, 210 front housing, 220 rear housing, 201 through hole;

300 first photosensitive element; 400 main control circuit board; 500 second photosensitive element; 600 adhesive layer; 700 movable bracket.

Detailed ways

The scheme in the embodiment of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

Please refer to Figures 1-5. The utility model proposes an adaptive dimming rearview mirror, including: a dimming lens 100; a shell assembly 200, the dimming lens 100 is arranged on the shell assembly 200; a first photosensitive element 300, the first photosensitive element 300 is arranged on the shell assembly 200, and the first photosensitive element 300 is at least partially located in the inner cavity of the shell assembly 200; the dimming lens 100 includes a liquid crystal box 101 and a semi-transparent and semi-reflective mirror film 102, the semi-transparent and semi-reflective mirror film 102 is arranged on the shell assembly 200. The dimming lens 100 is on a side close to the housing assembly 200; the liquid crystal box 101 has a first light-transmitting area 110 and a second light-transmitting area 120, the transmittances of the second light-transmitting area 120 and the first light-transmitting area 110 can be adjusted respectively, and the second light-transmitting area 120 is arranged opposite to the first photosensitive element 300; a main control circuit board 400, the main control circuit board 400 is arranged in the housing assembly 200, and the main control circuit board 400 is electrically connected to the dimming lens 100 and the first photosensitive element 300 respectively.

In this embodiment, the dimming lens 100 can change the transmittance of the lens according to the change of voltage, so that the lens switches between a transparent state and a dark state, thereby preventing the driver from not being able to see the road ahead clearly due to strong light reflected by the lens. A first photosensitive element 300 is arranged between the dimming lens 100 and the housing assembly 200, which can detect the ambient light intensity from the rear of the vehicle, and then adjust the transmittance of the dimming lens 100 according to the ambient light intensity behind the vehicle. Since the probe of the first photosensitive element 300 is located behind the dimming lens 100, the switching of the liquid crystal box 101 between the transparent state and the dark state and the semi-transparent and semi-reflective mirror film 102 will affect the accuracy of the first photosensitive element 300 in detecting the ambient light intensity. Therefore, a first light-transmitting area 110 and a second light-transmitting area 120 are arranged in the liquid crystal box 101. The first light-transmitting area 110 occupies the main area range of the dimming lens, and the second light-transmitting area 120 is arranged opposite to the first photosensitive element 300. The main control circuit board 400 can apply different voltages to the first light-transmitting area 110 and the second light-transmitting area 120 respectively, so as to respectively control the light and dark states of the first light-transmitting area 110 and the second light-transmitting area 120, so as to ensure the overall integrity of the dimming lens 100 without affecting the accuracy of the first photosensitive element 300 in detecting the ambient light intensity.

Further, the liquid crystal box 101 comprises a first substrate 1011, a liquid crystal layer 1012, two conductive layers and a second substrate 1013, the first substrate 1011 and the second substrate 1013 are PET films, the first substrate 1011, the first conductive strips 1014, the liquid crystal layer 1012, the second conductive strips 1015 and the second substrate 1013 are stacked in sequence, wherein a plurality of first conductive strips 1014 are arranged at intervals on a side of the first substrate 1011 close to the liquid crystal layer 1012, a plurality of second conductive strips 1015 are arranged at intervals on a side of the second substrate 1013 close to the liquid crystal layer 1012, the first conductive strips 1014 and the second conductive strips 1015 are arranged alternately, and the first conductive strips 1014 and the second conductive strips 1015 are respectively electrically connected to the main control circuit board 400. Preferably, the liquid crystal material used in the liquid crystal layer 1012 is GH.

In this embodiment, the first conductive strip 1014 and the second conductive strip 1015 are arranged vertically and staggered, and the first conductive strip 1014 on the first substrate 1011 and the second conductive strip 1015 on the second substrate 1013 are arranged at uniform intervals, so that the grid-shaped electrode pairs formed by the first conductive strip 1014 and the second conductive strip 1015 on both sides of the liquid crystal layer 1012 are evenly distributed; of course, in other embodiments, the first conductive strip 1014 and the second conductive strip 1015 can also be arranged in a non-vertical staggered manner, and the first conductive strip 1014 and the second conductive strip 1015 can also be arranged in a non-equidistant interval. It should be noted that the figure is only a schematic diagram of the first conductive strip 1014, the liquid crystal layer 1012 and the second conductive strip 1015. In practice, the number of the first conductive strip 1014 and the second conductive strip 1015 can be more, and the distribution density can be greater. Of course, the first conductive strip 1014 and the second conductive strip 1015 are formed of transparent conductive materials, such as indium tin oxide ITO or nano silver.

Among them, the liquid crystal box 101 has two dimming areas, which are respectively located in the first light-transmitting area 110 and the second light-transmitting area 120. The main control circuit board 400 always applies voltage to the corresponding first conductive strips 1014 and the second conductive strips 1015 located in the second light-transmitting area 120, so that the second light-transmitting area 120 always remains transparent, thereby improving the accuracy of the first photosensitive element 300 in detecting light intensity; the first photosensitive element 300 will input a corresponding signal to the main control circuit board 400 according to the detected ambient light intensity, and the main control circuit board 400 applies a corresponding voltage to the corresponding first conductive strips 1014 and the second conductive strips 1015 located in the first light-transmitting area 110 according to the signal given by the first photosensitive element 300, thereby realizing the adjustment of the light and dark state of the liquid crystal box 101.

Furthermore, the conductive layer of the first light-transmitting area 110 and the conductive layer of the second light-transmitting area 120 are insulated from each other, and the main control circuit board 400 is electrically connected to the conductive layers of the first light-transmitting area 110 and the second light-transmitting area 120 respectively.

In this embodiment, the conductive layer is different from the first conductive strip 1014 and the second conductive strip 1015 of the aforementioned embodiment. The conductive layer of this embodiment is in sheet form, and the liquid crystal box 101 is divided into a first light-transmitting area 110 and a second light-transmitting area 120 by laser etching or the like. The conductive layers of the first light-transmitting area 110 and the second light-transmitting area 120 are not electrically connected to each other after laser etching, and the conductive layers of the first light-transmitting area 110 and the second light-transmitting area 120 are electrically connected through the main control circuit board 400, so that the transmittance of the first light-transmitting area 110 and the second light-transmitting area 120 can be controlled separately.

Furthermore, the semi-transparent and semi-reflective mirror film 102 has a first region 130 and a second region 140 , the light transmittance of the second region 140 is higher than the light transmittance of the first region 130 , and the second region 140 is arranged opposite to the first photosensitive element 300 .

In this embodiment, by making the semi-transparent and semi-reflective mirror film 102 and the first photosensitive element 300 have a relatively high transmittance at the position corresponding to the first photosensitive element 300, the influence on the accuracy of the first photosensitive element 300 in detecting the ambient light can be further reduced.

Furthermore, the adaptive dimming rearview mirror further includes a second photosensitive element 500, which is disposed on a side of the housing assembly 200 away from the dimming lens 100, and is electrically connected to the main control circuit board 400. By disposing the second photosensitive element 500 on a side of the housing assembly 200 away from the dimming lens 100, the second photosensitive element 500 is used to detect the ambient light intensity from the front of the vehicle. The second photosensitive element 500 cooperates with the first photosensitive element 300, so that the adaptive dimming rearview mirror has a wider range of ambient light intensity detection, which can better meet the driver's anti-glare needs in different light intensity environments, thereby improving driving safety.

Furthermore, the dimming lens 100 and the housing assembly 200 are bonded together by an adhesive layer 600 , and the adhesive layer 600 is an OCA adhesive layer, so that the connection between the dimming lens 100 and the housing assembly 200 is more stable.

Furthermore, the housing assembly 200 includes a front housing 210 and a rear housing 220 . The front housing 210 is fixedly connected to the rear housing 220 . A through hole 201 is formed on the front housing 210 . The through hole 201 is arranged opposite to the first photosensitive element 300 .

In this embodiment, the front housing 210 and the rear housing 220 are connected to each other by means of buckles and slots, and the fixed connection is achieved immediately by pressing the front housing 210 onto the rear housing 220. Of course, according to actual conditions, screws or other methods can also be used to fix the rear mounting shell 500 and the front mounting shell 210. By opening a through hole 201 on the front housing 210, the first photosensitive element 300 can detect the ambient light intensity from the rear of the vehicle.

Furthermore, the adaptive dimming rearview mirror also includes a movable bracket 700 , one end of which is disposed on a side of the housing assembly 200 away from the dimming lens 100 , and the movable bracket 700 is movably connected to the housing assembly 200 .

In this embodiment, a movable bracket 700 is provided on the shell assembly 200, and the shell assembly 200 can rotate within a certain angle range relative to the bracket 700. With this arrangement, on the one hand, the adaptive dimming rearview mirror can be positioned on the front windshield or roof of the vehicle, and on the other hand, it is convenient for the driver to adjust the adaptive dimming rearview mirror to a suitable angle position according to his own needs.

It should be noted that the technical solutions between the various embodiments of the present utility model can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct/indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims (8)

1. An adaptive dimming rearview mirror, characterized by comprising: Dimming lens (100); A housing assembly (200), the dimming lens (100) being arranged on the housing assembly (200); A first photosensitive element (300), wherein the first photosensitive element (300) is disposed on the housing component (200), and the first photosensitive element (300) is at least partially located in an inner cavity of the housing component (200); The dimming lens (100) comprises a liquid crystal box (101) and a semi-transparent and semi-reflective mirror film (102); the semi-transparent and semi-reflective mirror film (102) is arranged on a side of the dimming lens (100) close to the housing assembly (200); The liquid crystal box (101) comprises a first light-transmitting area (110) and a second light-transmitting area (120), the light transmittances of the second light-transmitting area (120) and the first light-transmitting area (110) can be adjusted respectively, and the second light-transmitting area (120) is arranged opposite to the first photosensitive element (300); The semi-transparent and semi-reflective mirror film (102) comprises a first region (130) and a second region (140), the light transmittance of the second region (140) is higher than the light transmittance of the first region (130), and the second region (140) is arranged opposite to the first photosensitive element (300); A main control circuit board (400), the main control circuit board (400) is arranged in the housing assembly (200), and the main control circuit board (400) is electrically connected to the liquid crystal box (101) and the first photosensitive element (300) respectively. 2. The adaptive dimming rearview mirror according to claim 1, characterized in that the liquid crystal box (101) comprises a first substrate (1011), a liquid crystal layer (1012), two conductive layers and a second substrate (1013), the first substrate (1011), one of the conductive layers, the liquid crystal layer (1012), the other conductive layer and the second substrate (1013) are stacked in sequence, and the conductive layer is electrically connected to the main control circuit board (400). 3. The adaptive dimming rearview mirror according to claim 2, characterized in that the two conductive layers are respectively a first conductive strip (1014) and a second conductive strip (1015); a side of the first substrate (1011) close to the liquid crystal layer (1012) is provided with a plurality of first conductive strips (1014) arranged at intervals; a side of the second substrate (1013) close to the liquid crystal layer (1012) is provided with a plurality of second conductive strips (1015) arranged at intervals; the first conductive strips (1014) and the second conductive strips (1015) are arranged in an alternating manner; and the first conductive strips (1014) and the second conductive strips (1015) are electrically connected to the main control circuit board (400). 4. The adaptive dimming rearview mirror according to claim 2, characterized in that the conductive layer of the first light-transmitting area (110) and the conductive layer of the second light-transmitting area (120) are insulated from each other, and the main control circuit board (400) is electrically connected to the conductive layers of the first light-transmitting area (110) and the second light-transmitting area (120), respectively. 5. The adaptive dimming rearview mirror according to any one of claims 1 to 4, characterized in that the adaptive dimming rearview mirror also includes a second photosensitive element (500), the second photosensitive element (500) is arranged on a side of the housing assembly (200) away from the dimming lens (100), and the second photosensitive element (500) is electrically connected to the main control circuit board (400). 6. The adaptive dimming rearview mirror according to claim 1 is characterized in that the housing assembly (200) comprises a front housing (210) and a rear housing (220), the front housing (210) is fixedly connected to the rear housing (220), a through hole (201) is provided on the front housing (210), and the through hole (201) is arranged opposite to the first photosensitive element (300). 7. The adaptive dimming rearview mirror according to claim 1, characterized in that the adaptive dimming rearview mirror further comprises an adhesive layer (600), one side of the adhesive layer (600) is bonded to the dimming lens (100), and the other side of the adhesive layer (600) is bonded to the housing assembly (200). 8. The adaptive dimming rearview mirror according to claim 1 is characterized in that the adaptive dimming rearview mirror also includes a movable bracket (700), one end of the movable bracket (700) is arranged on a side of the shell assembly (200) away from the dimming lens (100), and the movable bracket (700) is movably connected to the shell assembly (200).