CN201400132Y - An anti-glare car rearview mirror - Google Patents

Abstract

The utility model discloses an anti-glare automobile rearview mirror, which comprises a first base plate, a second base plate and a third base plate arranged in sequence; A transparent conductive layer and a first alignment layer and a second transparent conductive layer and a second alignment layer, a sealant is sandwiched between the outer edges of the first substrate and the second substrate to form a first cavity, and in the The first cavity is filled with the first guest-host liquid crystal; the layout between the second substrate and the third substrate is similar to the above, and a reflective layer is also coated on the inner side wall or the outer side wall of the third substrate . Compared with the rearview mirror made of ordinary glass in the prior art, the anti-glare automobile rearview mirror can change the reflection intensity of the incident light, so that the eyes of the driver and the passenger will not be affected to a certain extent. The interference of external light can achieve the purpose of anti-glare, thereby improving the safety of driving.

Description

An anti-glare car rearview mirror

【Technical field】

The utility model relates to an automobile rearview mirror, in particular to an anti-glare automobile rearview mirror.

【Background technique】

At present, in the field of automobile production, many companies still use ordinary glass as the main material for automobile rearview mirrors. But this kind of car rearview mirror with glass as material has relatively strong light reflectivity, and the driver's eyes are prone to fatigue, and traffic accidents are easy to occur, causing accidental injuries to drivers and passengers.

The anti-glare rearview mirror has been accepted by many people as a high-end part of the car. The mirror glass of the rearview mirror of some middle and high-end cars is coated with a sol product coating such as titanium dioxide to achieve the purpose of anti-glare, but this coating The process is more complicated, and the stability of chromatic aberration is difficult to control. In addition, there are also technologies that use electrochemical rearview mirrors to achieve anti-glare. The main principle is to incorporate a chemical colloid into the rearview mirror, which will produce glare when it is strongly irradiated by the rear headlights. Electrochemical substances, thereby automatically reducing the intensity of incident light, but this electrochemical rearview mirror is not only expensive, but also when the headlights of the rear car shine on the interior rearview mirror, the speed of light changes as long as one to three seconds, Therefore this rearview mirror still can't effectively solve automobile night driving safety problem.

【Content of utility model】

The utility model provides an anti-glare automobile rearview mirror in order to solve the disadvantage of poor anti-glare ability of the automobile rearview mirror in the prior art.

The specific technical solution of the anti-glare automobile rearview mirror is: an anti-glare automobile rearview mirror, comprising a first substrate, a second substrate, and a third substrate arranged in sequence, and the first substrate and the second substrate A first transparent conductive layer, a first alignment layer, a second transparent conductive layer, and a second alignment layer are arranged in sequence on the opposite inner walls, and a sealant is sandwiched between the outer edges of the first substrate and the second substrate to form a first cavity, and the first cavity is filled with a first guest-host liquid crystal; a third transparent conductive layer, a third alignment layer and The fourth transparent conductive layer and the fourth alignment layer, the outer edges of the second substrate and the third substrate are sandwiched by a sealing gel to form a second cavity, and the second cavity is filled with a second guest-host liquid crystal ; A reflective layer is also coated on the inner sidewall or the outer sidewall of the third substrate.

Compared with the rearview mirror made of ordinary glass in the prior art, the anti-glare automobile rearview mirror can change the reflection intensity of the incident light, so that the driver's eyes will not be affected by the glare to a certain extent. Interference of external light, thereby achieving the purpose of anti-glare, thereby improving the safety of driving.

The features and advantages of the utility model will be described in detail through embodiments in conjunction with the accompanying drawings.

【Description of drawings】

Fig. 1 is the structural representation of the anti-glare automobile rearview mirror that the utility model provides;

Fig. 2 is a schematic diagram of a working state of the anti-glare automobile rearview mirror provided by the utility model;

Fig. 3 is a schematic diagram of another working state of the anti-glare automobile rearview mirror provided by the utility model.

【Detailed ways】

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model, and are not intended to limit the utility model.

A kind of anti-glare automobile rearview mirror that the utility model provides, as shown in Figure 1, comprises a first substrate 6, a second substrate 8, a third substrate 2 arranged in sequence, in the utility model, described The first substrate 6, the second substrate 8, and the third substrate 2 are ITO glass substrates, and the first transparent conductive layer 12 and the first alignment layer are respectively arranged in sequence on the inner walls facing the first substrate 6 and the second substrate 8. 7 and the second transparent conductive layer 14 and the second alignment layer 13, a sealant 4 is sandwiched between the outer edges of the first substrate 6 and the second substrate 8 to form a first cavity, and in the first cavity The body is filled with the first guest-host type liquid crystal 5; the third transparent conductive layer 15, the third alignment layer 16, the fourth transparent conductive layer 19 and the The fourth alignment layer 18, the second substrate 8 and the outer edge of the third substrate 2 are interposed with a sealant 4 to form a second cavity, and the second cavity is filled with a second guest-host liquid crystal 3; A reflective layer is also coated on the inner sidewall or the outer sidewall of the third substrate 2 .

Among them, the guest-host liquid crystal is formed by adding dye to the nematic liquid crystal, in which the nematic liquid crystal is the host, the dye is the guest, and the arrangement of the dye changes with the arrangement of the nematic liquid crystal, so it is called the guest-host liquid crystal. Moreover, dye molecules are generally rod-shaped molecules, and the long-axis and short-axis directions of the rod-shaped molecules absorb light differently. Generally, one direction can absorb light, and the other direction cannot absorb light.

In addition, in the anti-dazzling automobile rearview mirror provided by the utility model, a first controllable voltage source is arranged between the first transparent conductive layer 12 and the second transparent conductive layer 14, and the third transparent conductive layer 15 A second controllable voltage source is provided between the fourth transparent conductive layer 19 . In order to realize the automatic control of the present invention, the anti-glare automobile rearview mirror further includes a controller, and the controller is respectively connected with the first controllable voltage source and the second controllable voltage source.

The first controllable voltage source and the second controllable voltage source are mainly used to selectively change the arrangement of molecules in the guest-host liquid crystal. Generally speaking, the voltage source is controlled by the controller, and the controller It is not mentioned in this article, and the installation method of the controller and other related content can be easily imagined by ordinary technical personnel, and will not be repeated here.

In the utility model, the material of the reflective layer is a metal material or a non-metal material, and its main function is to make the anti-glare automobile rearview mirror provided by the utility model into a mirror surface capable of reflecting light. The material is a metal material, such as aluminum or silver. Certainly, according to those skilled in the art, it is not difficult to imagine that there are more alternatives that can replace this type of material, which also belong to the protection scope of the present invention.

Now, how the anti-dazzling automobile rearview mirror provided by the utility model can achieve the purpose of anti-dazzling is done a brief overview, summarized as follows:

Cars generally run in two natural states, day and night. When the car is driving in the daytime, because other cars driving at the rear of the car do not light up the headlights, the light shining on the rearview mirror of the car is not strong. At this time, the controller can control the first controllable voltage source and the second controllable voltage source not to work. At this time, the guest-host type liquid crystal molecules are parallel to the first substrate 6, the second substrate 8 and the third substrate. 2 arrangement, no light absorption.

When the car is driving in the dark environment, because the rear of the car lights up the headlights, it is likely to shoot its strong light into the car and reflect it through the rearview mirror. If you don't pay attention, it will affect the The driver's line of sight, when serious, can produce serious traffic accident, therefore, must do a processing to described light at this moment.

As shown in Figure 2, it is a schematic diagram of the working state of the anti-glare automobile rearview mirror provided by the utility model, which is the second controllable voltage source working conduction, and the second guest-host type liquid crystal is arranged perpendicular to the initial state under the action of the electric field, When external light irradiates the rearview mirror, the second guest-host type liquid crystal will absorb light of a certain wavelength, and the rearview mirror will display complementary colors, and the reflectivity of light will decrease at the same time, achieving the anti-glare effect.

As shown in Figure 3, another kind of working state schematic diagram of the anti-glare automobile rearview mirror that the utility model provides, it is that the first controllable voltage source work conduction, the first guest-host type liquid crystal 5 is perpendicular to under the action of electric field Arranged in the initial state, when external light irradiates the rearview mirror, the first guest-host liquid crystal 5 will absorb light of a certain wavelength, and the rearview mirror will display complementary colors, and the reflectivity of light will decrease at the same time, achieving the anti-glare effect .

Since the first guest-host type liquid crystal 5 and the second guest-host type liquid crystal are made of different dyes and liquid crystals, their light absorption capabilities are also different. Therefore, when to close the first controllable voltage source, when to close The second controllable voltage source needs to be carried out according to the specific situation. Of course, the controller can also automatically analyze and take corresponding measures according to the intensity of the incident light, so that the reflectivity of the incident light can be reduced to an appropriate level. Of course, In some cases, the first controllable voltage source and the second controllable voltage source can work simultaneously, and their working modes are not limited here.

Compared with the rearview mirror made of ordinary glass in the prior art, the anti-glare automobile rearview mirror can change the emission intensity of incident light, so that the eyes of drivers and passengers will not receive Interference of external light, thereby achieving the purpose of anti-glare, thereby improving the safety of driving.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. An anti-dazzling automotive rearview mirror, characterized in that it comprises a first substrate, a second substrate, and a third substrate arranged in sequence, and the inner walls facing the first substrate and the second substrate are sequentially provided with The first transparent conductive layer and the first alignment layer, as well as the second transparent conductive layer and the second alignment layer, a sealant is sandwiched between the outer edges of the first substrate and the second substrate to form a first cavity, and in the The first cavity is filled with the first guest-host liquid crystal; the third transparent conductive layer and the third alignment layer and the fourth transparent conductive layer and the fourth Alignment layer, the second substrate and the outer edge of the third substrate are sandwiched by a sealant to form a second cavity, and the second cavity is filled with a second guest-host type liquid crystal; on the third substrate A reflective layer is also coated on the inner side wall or the outer side wall. 2. The anti-glare automobile rearview mirror according to claim 1, characterized in that a first controllable voltage source is arranged between the first transparent conductive layer and the second transparent conductive layer, A second controllable voltage source is arranged between the third transparent conductive layer and the fourth transparent conductive layer. 3. The anti-glare automobile rearview mirror according to claim 2, further comprising a controller connected to the first controllable voltage source and the second controllable voltage source respectively. 4. The anti-glare automobile rearview mirror according to claim 1, characterized in that, the material of the reflective layer is metal material or non-metal material. 5. The anti-glare automobile rearview mirror according to claim 4, characterized in that the material of the reflective layer is aluminum or silver.

Images