CN213594180U - Streaming media rearview mirror - Google Patents
Streaming media rearview mirror Download PDFInfo
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- CN213594180U CN213594180U CN202022460293.5U CN202022460293U CN213594180U CN 213594180 U CN213594180 U CN 213594180U CN 202022460293 U CN202022460293 U CN 202022460293U CN 213594180 U CN213594180 U CN 213594180U
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- streaming media
- rearview mirror
- display screen
- polaroid
- media rearview
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Abstract
The utility model provides a streaming media rear-view mirror, it includes: a display screen; the LCD light valve comprises a first polaroid, a liquid crystal box and a second polaroid which are sequentially arranged, wherein the second polaroid is a semi-permeable and semi-reflective polaroid, and is arranged between the liquid crystal box and the display screen; and the controller is electrically connected with the display screen and the LCD light valve, and sends a working signal to the LCD light valve when the display screen is opened so as to enable the LCD light valve to transmit light. The utility model discloses a streaming media rear-view mirror is through setting up the reflection or the display effect of rear-view mirror are realized to the second polaroid. The image on the display screen is displayed by changing the light transmittance of the LCD light valve, and the LCD light valve is high in definition and convenient to use.
Description
Technical Field
The utility model relates to a liquid crystal display field, in particular to streaming media rear-view mirror.
Background
The automobile rearview mirror is mainly used for reflecting the scene behind the automobile so as to assist the driver in driving. However, as the functions of automobiles increase, some automobiles combine a backing image system and a driving recorder system on a rearview mirror in order to meet the development requirements of the automobile industry. Some rearview mirrors with image functions display images in a mode of directly projecting on mirror glass, and have the problem of unclear images. Particularly, when a driver wears the polarized sunglasses to drive, the image on the rearview mirror is not clearly seen.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a streaming media rear-view mirror, it can solve one of foretell technical problem at least.
The technical scheme of the utility model is realized like this:
a streaming media rearview mirror, comprising:
a display screen;
the LCD light valve comprises a first polaroid, a liquid crystal box and a second polaroid which are sequentially arranged, wherein the second polaroid is a semi-permeable and semi-reflective polaroid, and is arranged between the liquid crystal box and the display screen;
and the controller is electrically connected with the display screen and the LCD light valve, and sends a working signal to the LCD light valve when the display screen is opened so as to enable the LCD light valve to transmit light.
The utility model discloses a
Further, the first polarizer is provided with an optical elliptical polarization conversion layer, and the elliptical polarization conversion layer is used for converting linearly polarized light passing through the first polarizer into elliptical polarized light.
Further, the elliptical polarized light conversion layer is a quarter-wave plate layer or an SRF optical film.
Further, the first polarizer is an absorption polarizer and is provided with a first light transmission axis;
the second polarizer is provided with a second transmission axis and a reflection axis;
the first light transmission shaft and the second light transmission shaft are arranged in parallel, and the twist angle of liquid crystal in the liquid crystal box is 90 degrees in a power-off state.
Furthermore, the display screen is provided with a third polaroid, the third polaroid is provided with a second light transmission shaft, and the second light transmission shaft and the first light transmission shaft are arranged in parallel.
Furthermore, the streaming media rearview mirror also comprises a photosensitive module electrically connected with the controller;
the photosensitive module is arranged on the front side of the streaming media rearview mirror and is used for detecting the illumination intensity of the incident streaming media rearview mirror and outputting voltage signals with different sizes according to the change of the illumination intensity;
and the controller outputs an adjusting signal to the LCD light valve according to the voltage signal so as to adjust the light transmittance of the LCD light valve.
Further, the display screen is an IPS color display screen.
Furthermore, the streaming media rearview mirror also comprises a cover plate, wherein the cover plate is arranged in front of the LCD light valve and covers the LCD light valve.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:
fig. 1 is a schematic structural view of the streaming media rearview mirror of the present invention;
fig. 2 is a schematic structural diagram of a first polarizer of the present invention;
fig. 3 is a schematic diagram of the optical path of the rear-view mirror using the new streaming media.
The display device comprises a display screen 1, a display screen 2, an LCD light valve 3, a controller 4, a photosensitive module 5, a cover plate 11, a third polarizer 21, a first polarizer 22, a liquid crystal box 23, a second polarizer 111, a third light transmission shaft 211, an elliptical polarized light conversion layer 212, a first light transmission shaft 222, liquid crystal 231, a second light transmission shaft 232 and a reflection shaft.
Detailed Description
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 3.
As shown in fig. 1, the present invention provides a rear-view mirror for streaming media, which includes:
a display screen 1;
the LCD light valve 2 comprises a first polarizer 21, a liquid crystal box 22 and a second polarizer 23 which are sequentially arranged, wherein the second polarizer 23 is a semi-permeable and semi-reflective polarizer, and the second polarizer 23 is arranged between the liquid crystal box 22 and the display screen 1;
and the controller 3 is electrically connected with the display screen 1 and the LCD light valve 2, and the controller 3 sends a working signal to the LCD light valve 2 when the display screen 1 is opened so as to enable the LCD light valve 2 to transmit light.
The utility model discloses a streaming media rear-view mirror is through setting up the reflection or the display effect of rear-view mirror are realized to the second polaroid. When the display screen is closed, the LCD light valve is opaque, and light entering the LCD light valve is reflected by the second polarizer, so that the streaming media rearview mirror can reflect scenes behind an automobile. When the display screen is opened, the LCD light valve transmits light, and the streaming media rearview mirror can be used as a screen for displaying images. The utility model discloses a flow media rear-view mirror is through the image on the luminousness display screen who changes the LCD light valve, and its definition is high, facilitate the use.
Wherein the second polarizer 23 is preferably an RPM film. The liquid crystal cell includes an incident surface substrate glass, an ITO conductive layer, a transparent insulating layer, an alignment layer, a liquid crystal layer, a sealing glue, a glue bead powder, and an exit surface substrate glass.
The controller 3 may be a PCB circuit board, which may be disposed behind the display screen 1.
It should be noted that, the display screen 1 may be controlled to be turned on and off by a separate switch, and the switch is electrically connected to the controller. The display screen can be connected with other modules in the automobile, such as a reversing system, a vehicle event data recorder and the like, through a circuit. For example, when the display screen is connected with a reversing system, the display screen is automatically opened after a driver enters a reversing mode, and the use is more convenient.
Because the light that display screen 1 jetted out is the linear polarization light, has the polaroid on polarisation sunglasses, the liquid crystal sunglasses, when the user wears these sunglasses in the car, in case sunglasses with when the streaming media rear-view mirror becomes certain angle, the user will be unable to see through sunglasses the image that shows on the streaming media rear-view mirror is inconvenient to use. In order to solve the problem that a driver cannot see images on a rearview mirror at certain angles after wearing the polarized sunglasses, the first polarizer is provided with an elliptical polarized light conversion layer along light, and the elliptical polarized light conversion layer is used for converting linearly polarized light passing through the first polarizer into elliptical polarized light.
Specifically, when a driver wears polarized sunglasses to watch the streaming media rearview mirror, as shown in fig. 2, linearly polarized light emitted by the display 1 in the streaming media rearview mirror is emitted through the LCD light valve 2, and passes through the elliptically polarized light conversion layer 211 on the first polarizer 21, no matter the polarization direction of the linearly polarized light is horizontal direction, vertical direction or other directions, the linearly polarized light is converted into elliptically polarized light by the elliptically polarized light conversion layer 211, and the elliptically polarized light can penetrate through the polarizer on the polarized sunglasses, so that the driver wearing the polarized sunglasses can clearly see images on the streaming media rearview mirror at any angle. The direction a in fig. 2 is the direction of linearly polarized light emitted by the display screen.
The elliptically polarized light conversion layer 211 may be one of a quarter-wave plate layer and an SRF optical film.
Because the service life of the streaming media rearview mirror for reflecting the scene behind the automobile is far longer than that of the streaming media rearview mirror for displaying the image, the streaming media rearview mirror for reflecting the scene behind the automobile is beneficial to saving the power supply when the LCD light valve is powered off.
Specifically, as shown in fig. 3, the first polarizer 21 is an absorption polarizer having a first transmission axis 212; the second polarizer 23 has a second transmission axis 231 and a reflection axis 232; the first light transmission axis 212 is parallel to the second light transmission axis 231. In the power-off state, the twist angle of the liquid crystal 222 in the liquid crystal cell 22 is 90 °, and at this time, the liquid crystal has a swirling effect on light, and the light passes through the first polarizer 21, and is twisted by the liquid crystal 222 by 90 ° when passing through the liquid crystal cell 22, so that the light passing through the first polarizer and the liquid crystal cell cannot pass through the second light transmission shaft 231 and is reflected by the reflection shaft 232, and passes through the liquid crystal cell and the first polarizer again, so that the streaming media rearview mirror can reflect a scene behind an automobile.
In the power-on state, the liquid crystal 222 deflects to different degrees according to the voltage applied to the LCD light valve 2, thereby generating optical rotation effects to different degrees. When the twist angle of the liquid crystal 222 reaches 0 °, light having a polarization direction in accordance with the direction of the first transmission axis 212 can pass through the second transmission axis 231.
Meanwhile, the light (parallel to the transmission axis 231) emitted from the display screen 1 passes through the second polarizer 23, and then passes through the liquid crystal cell 22 and the first polarizer 21, so that the driver can see the image on the display screen on the flow media rearview mirror.
In fig. 3, the direction B is a direction in which ambient light enters the streaming media rearview mirror, and the direction C is a direction in which light of the display screen exits the streaming media rearview mirror.
The display screen 1 is provided with a third polaroid 11, light emitted by the third polaroid is linearly polarized light, and in order to ensure that the light emitted by the display screen can pass through the second polaroid 23, the light transmission axis of the third polaroid must be consistent with the light transmission axis of the second polaroid in direction. Specifically, the transmission axis of the second polarizer 23 is a second transmission axis 231, the transmission axis of the third polarizer 11 is a third transmission axis 111, and the second transmission axis 231 and the third transmission axis 111 are arranged in parallel.
As a preferred scheme, the streaming media rearview mirror further comprises a photosensitive module 4 electrically connected with the controller; the photosensitive module 4 is arranged at the front side of the streaming media rearview mirror and is used for detecting the illumination intensity of the incident streaming media rearview mirror and outputting voltage signals with different sizes according to the change of the illumination intensity;
the controller 3 outputs an adjusting signal to the LCD light valve 2 according to the voltage signal to adjust the light transmittance of the LCD light valve 2.
Specifically, the controller 3 adjusts the voltage applied to the LCD light valve 2 according to the voltage signals with different magnitudes output by the light sensing module 4, so as to deflect the liquid crystal 222 in the liquid crystal cell 22 at different angles, and further twist the light passing through the liquid crystal cell 22 at different angles, thereby adjusting the proportion of the light reflected or transmitted by the second polarizer 23. When the intensity of the light incident to the streaming media rearview mirror is high, the voltage applied to the LCD light valve 2 is increased so as to reduce the reflected light and achieve the anti-dazzle effect.
In the present embodiment, the display panel 1 is preferably an IPS color display panel.
In order to protect the LCD light valve 2 from being scratched and polluted, the streaming media rearview mirror further includes a cover plate 5, and the cover plate 5 is disposed in front of the LCD light valve 2 and covers the LCD light valve 2. The cover plate 5 can be made of PMMA, glass and other materials with high transparency, wear resistance and scratch resistance.
In the description of the present invention, it is to be understood that the terms "center", "left", "right", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and simplification of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.
If the terms "first," "second," etc. are used herein to define parts, those skilled in the art will recognize that: the use of "first" and "second" is merely for convenience in describing the invention and to simplify the description, and the words are not intended to have a special meaning unless otherwise stated.
The present invention is not limited to the above embodiment, and if various modifications or variations of the present invention do not depart from the spirit and scope of the present invention, they are intended to be covered if they fall within the scope of the claims and the equivalent technology of the present invention.
Claims (8)
1. A streaming media rearview mirror, comprising:
a display screen;
the LCD light valve comprises a first polaroid, a liquid crystal box and a second polaroid which are sequentially arranged, wherein the second polaroid is a semi-permeable and semi-reflective polaroid, and is arranged between the liquid crystal box and the display screen;
and the controller is electrically connected with the display screen and the LCD light valve, and sends a working signal to the LCD light valve when the display screen is opened so as to enable the LCD light valve to transmit light.
2. The streaming media rearview mirror according to claim 1, wherein:
the first polarizer is provided with an optical elliptical polarization conversion layer, and the elliptical polarization conversion layer is used for converting linearly polarized light passing through the first polarizer into elliptical polarized light.
3. The streaming media rearview mirror according to claim 2, wherein:
the elliptical polarized light conversion layer is a quarter-wave plate layer or an SRF optical film.
4. The streaming media rearview mirror according to claim 1, wherein:
the first polaroid is an absorption polaroid and is provided with a first light transmission shaft;
the second polarizer is provided with a second transmission axis and a reflection axis;
the first light transmission shaft and the second light transmission shaft are arranged in parallel, and the twist angle of liquid crystal in the liquid crystal box is 90 degrees in a power-off state.
5. The streaming media rearview mirror according to claim 4, wherein:
the second polarizer is provided with a second light transmission shaft;
the display screen is provided with a third polaroid, and the third polaroid is provided with a third light transmission shaft;
the second light transmission shaft and the third light transmission shaft are arranged in parallel.
6. The streaming media rearview mirror according to claim 1, wherein:
the streaming media rearview mirror also comprises a photosensitive module electrically connected with the controller;
the photosensitive module is arranged on the front side of the streaming media rearview mirror and is used for detecting the illumination intensity of the incident streaming media rearview mirror and outputting voltage signals with different sizes according to the change of the illumination intensity;
and the controller outputs an adjusting signal to the LCD light valve according to the voltage signal so as to adjust the light transmittance of the LCD light valve.
7. The streaming media rearview mirror according to claim 1, wherein:
the display screen is an IPS color display screen.
8. The streaming media rearview mirror according to claim 1, wherein:
the streaming media rearview mirror further comprises a cover plate, and the cover plate is arranged in front of the LCD light valve and covers the LCD light valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022460293.5U CN213594180U (en) | 2020-10-29 | 2020-10-29 | Streaming media rearview mirror |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022460293.5U CN213594180U (en) | 2020-10-29 | 2020-10-29 | Streaming media rearview mirror |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213594180U true CN213594180U (en) | 2021-07-02 |
Family
ID=76594408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022460293.5U Active CN213594180U (en) | 2020-10-29 | 2020-10-29 | Streaming media rearview mirror |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213594180U (en) |
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2020
- 2020-10-29 CN CN202022460293.5U patent/CN213594180U/en active Active
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