WO2013063903A1 - 一种多功能汽车后视镜 - Google Patents

一种多功能汽车后视镜 Download PDF

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Publication number
WO2013063903A1
WO2013063903A1 PCT/CN2012/073986 CN2012073986W WO2013063903A1 WO 2013063903 A1 WO2013063903 A1 WO 2013063903A1 CN 2012073986 W CN2012073986 W CN 2012073986W WO 2013063903 A1 WO2013063903 A1 WO 2013063903A1
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WIPO (PCT)
Prior art keywords
module
display
size
video
small
Prior art date
Application number
PCT/CN2012/073986
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English (en)
French (fr)
Inventor
潘磊
Original Assignee
Pan Lei
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Pan Lei filed Critical Pan Lei
Priority to US13/878,736 priority Critical patent/US9290128B2/en
Publication of WO2013063903A1 publication Critical patent/WO2013063903A1/zh

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F23/00Advertising on or in specific articles, e.g. ashtrays, letter-boxes
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09FDISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/35Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being liquid crystals
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/12Mirror assemblies combined with other articles, e.g. clocks
    • B60R2001/1215Mirror assemblies combined with other articles, e.g. clocks with information displays
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/70Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by an event-triggered choice to display a specific image among a selection of captured images

Definitions

  • the utility model relates to the field of automobile accessories, and more particularly to a multifunctional automobile rearview mirror. Background technique
  • the existing car rearview mirror is embedded with a wireless video receiving module. If the wireless video receiving module is always on, it is easily interfered by other close frequencies and disturbs normal driving.
  • our rearview mirror also embeds an RF receiving module. The power of the video receiving module is controlled by this RF receiving module.
  • the rear of the car consists of three components: a camera, a wireless video transmitting module, and an RF signal receiving and transmitting module. There are two ways to connect the three components:
  • One method is that the power supply of the three components is connected to the backup light. When the reverse gear is hung, the reverse light will automatically have power. After the power of the reverse light is transmitted to the three components, the video transmitting module will transmit the video of the camera. Going out, the RF module sends a signal to the RF receiver module inside the car's rearview mirror, so that it energizes the video receiver module, and finally the image of the rear camera is displayed on the display of the rearview mirror; the disadvantage of this method is that the owner must hang After the reverse gear, you can see the situation behind. Sometimes you want to see the rear when you are on the highway at high speed, you can't switch the video to the back.
  • Another type of wiring is the ACC ignition line power supply and reverse power supply of the car. They are all connected to the control system of the RF receiving and transmitting module after the vehicle. When the reverse gear is hung, the system action is the same as the previous one; When the high-speed driving can't be reversed or the owner doesn't want to hang the reverse gear, but the owner wants to see the situation behind the car, the owner can start an RF transmitting and receiving module next to the camera by pressing an RF transmitting remote control at hand. Upon receipt, the RF module sends a signal to the rearview mirror RF receiver module to turn on the video receiving and display system inside the rearview mirror, while the RF transceiver module behind the car turns on the switch to power the camera and video transmitter module. Finally let the image of the camera show up to On the rearview mirror display.
  • the working principle of the display is that the display driver board provides a display signal to the display liquid crystal glass, and other light is irradiated onto the display liquid crystal glass, and the image is visually seen by the human eye to realize the display function; the light on the display liquid crystal glass can be It is sent from the display backlight module, or it can be sent from a small-sized backlight module.
  • the output window area has graphic information, and other non-window areas deliver black images.
  • the light emitted by the small-sized backlight is projected onto the display liquid crystal glass through a small window opened in the backlight area of the display, so that a small-sized image display area can be clearly seen by the driver.
  • a set of hardware uses two methods, which saves cost and maximizes the reflection area of the rearview mirror. Chemical.
  • a conventional multifunctional rearview mirror includes a casing 1 and a mirror 2 mounted in the casing, and a liquid crystal display 3 including a liquid crystal display 31 and a backlight (not shown).
  • the display screen 31 is provided with a small-sized display area 311.
  • the video such as the reversing camera or the DVD needs full-screen display
  • the backlight on the liquid crystal display is bright; when the car is driven forward, it needs to be behind.
  • the mirror has a small size area to display some graphic information, since the small size display area 311 does not cover the entire screen, according to the conventional method, in addition to the small size display area 311, other areas of the screen are also backlit.
  • the technical problem to be solved by the utility model is to provide a multifunctional rear-view mirror with simple structure, beautiful appearance and safe driving.
  • the utility model adopts the following technical solutions:
  • a multifunctional automobile rearview mirror comprising a face shell, a glass mirror surface disposed in the face shell, a large-size liquid crystal display, the large-size liquid crystal display comprising a large-size display screen and a large-size display driving board,
  • the large-sized display screen includes a large-size display liquid crystal glass and a large-size display backlight module, and the large-sized display is provided with a fixing frame of a large-sized display and a high-shading medium on the rear of the large-sized display, and the high-shading medium
  • a small window is opened, and a small-sized backlight module and a control circuit board are arranged behind the small window.
  • the backlight surface of the small-sized backlight module has a shape similar to that of a small window, and the light-emitting surface of the small-sized backlight module is closely attached to the rear of the large-sized display through a small window.
  • the front side of the small-sized backlight is provided with a dielectric layer having high unidirectional reflectivity and high unidirectional transmittance.
  • a rear light sensor is disposed on a side of the rear view mirror adjacent to the driver's eyes, and a front light sensor is disposed on a side of the rear windshield.
  • the glass mirror surface is internally filled with an LCD or made of a dyed liquid crystal material.
  • the rear view mirror is provided with an RF transceiver module, and the RF transceiver module in the rearview mirror performs RF wireless control and data transmission between the RF transceiver module and the RF transceiver module in the camera.
  • the rear view mirror is embedded with two cameras that can adjust the direction for DVR recording.
  • the rearview mirror is provided with a video control device, and the video control device comprises a lamp signal sensing module, a video switching module, an RF remote controller module, a body camera module, a panoramic reversing video synthesizing module, and a display screen.
  • the module and the control center module, the video control device automatically switch the video channel by sensing the high beam headlight, the left turn light, the right turn light, and the reverse light of the vehicle.
  • the utility model adds a small-sized backlight to the rear of the rear-view mirror, which realizes the effect of the small-size display and the large-size display in the rearview mirror.
  • the function of the mirror display is diversified, the driving safety is not affected, and it is convenient and usable.
  • the rear view mirror of the car looks more beautiful, and the problem of driving due to excessive backlight is avoided.
  • Figure 1 is a schematic view showing the structure of a conventional product
  • Figure 2 is an exploded perspective view of the utility model
  • FIG. 3 is a schematic diagram of a full screen display state of the present invention.
  • 4 is a schematic view showing the display state of the information presentation area of the present invention
  • 5 is an exploded perspective view of the liquid crystal display of the present invention
  • FIG. 6 is a schematic diagram of the connection of the video control device of the present invention.
  • Figure 7 is a schematic view of the operation of the RF wireless camera device of the present invention.
  • FIG. 8 is a second schematic view of the operation of the RF wireless camera device of the present invention.
  • FIG. 9 is a third schematic diagram of the operation of the RF wireless camera device of the present invention.
  • a multifunctional automobile rearview mirror includes a face shell 1, and a glass mirror surface 2 disposed in the face shell 1, and a large-size liquid crystal display 3, wherein the large-size liquid crystal display 3 includes a large size.
  • the backlight surface of the small-sized backlight module 7 has a shape similar to that of the small window 6.
  • the light-emitting surface of the small-sized backlight module 7 is closely attached to the rear of the large-sized display 3 through a small window
  • the working principle of the large-size liquid crystal display 3 is that the large-size display driving board 32 provides a display signal to the display liquid crystal glass 311, and other light is irradiated onto the display liquid crystal glass 311, and an image is visually seen by the human eye to realize the display function;
  • the light on the display liquid crystal glass 311 may be from the large-size display backlight module 312, or may be from the small-size backlight module 7; the small-size backlight module 7 is close to the large-size liquid crystal display 3
  • the high-shading medium 5 from the small-sized backlight light-emitting surface to the display liquid crystal glass 311 and the fixing frame outside the large-size liquid crystal display 3 are dug, while retaining this small area low-light-shielding medium, formed on the display A light-transmissive small window 6 similar in shape to a small-sized backlit surface.
  • the backlight of the display is turned off, but the large-size display driver board 32 still transmits a video signal to the display liquid crystal glass 311 to supply power to the small-sized backlight, and the light emitted by the small-sized backlight passes through the small window. , a specific area on the display liquid crystal glass 311 is irradiated, so that a small-sized image is formed in this specific area.
  • This small size image is achieved using the LCD glass of the display and an additional small size backlight.
  • This small size image can be used to display various image information such as compass, temperature, Bluetooth caller information, mobile radar information, in-vehicle information, etc. while the car is driving.
  • the portion where the small-sized window is opened has image information, and all other regions are pure black image signals, and all other regions are not illuminated by the backlight.
  • the other areas of the display and other areas of the mirrors of the mirrors are completely black, so that the entire rear view mirror has only a small area of the backlight corresponding to the image, and the other areas are completely normal mirror functions, so that To ensure that the driver can use the mirror surface of the interior rearview mirror to the maximum extent when driving, to ensure safe driving.
  • the LCD display glass When the car is reversing or when the rearview mirror is to play other video images such as DVD, the LCD display glass will display images such as camera or DVD, turn on the backlight of the LCD display, turn off or adjust the brightness of the small backlight, so that the entire LCD monitor Will work perfectly. But at this time, because the part corresponding to the small-sized backlight has removed some of the medium, when viewing this screen, it will be found that this small area is somewhat dim. To compensate for this defect, there are three ways to solve it. One is to fill in a small area.
  • the unidirectional high transmittance also has a medium with high unidirectional reflectivity, so that the light of the small backlight can be efficiently passed, and the light emitted by the large-sized backlight can be efficiently reflected.
  • This method can greatly reduce this small The dim condition of the area; the second is the closest small backlight layer of the large backlight, all using one-way high transmittance and one-way high reflectivity medium, which can improve the dim problem of small areas; A certain intensity of light is also emitted to compensate for the dimness of the area; the above three methods can be implemented separately or in combination or together, ultimately improving the bleak problem in this area.
  • the multifunctional rear view mirror of the present invention is respectively equipped with a light sensor in front of and behind the rear view mirror, and a light sensing device is mounted on the side of the rear view mirror near the eyes of the driver.
  • Light sensor 12 Install a light sensing device in the direction of the windshield of the car, which we call the front sensor 11; the camera module includes the lens and the associated servo circuit; the display module includes the display driver circuit board and the display liquid crystal screen .
  • the variable reflectivity lens consists of 3 layers. The side close to the driver is pure transparent glass. The layer near the inside of the rearview mirror is a glass with a high reflectivity reflective film. The two layers are filled with chemical colloid or Medium such as liquid crystal or dyed liquid crystal.
  • These media are highly transparent when they are not energized. Light can pass through and be reflected back. When energized, the transmittance of these media changes with the voltage or current or frequency. When the change occurs, the reflectivity of the entire mirror will change accordingly.
  • the current sensor senses that the light is strong, and it is the brightness of the daytime. No matter the value sensed by the rear light sensor, the reflectivity of the variable reflectivity lens in the rearview mirror does not change, and the maximum reflectance is maintained at all times; The current sensor senses that the light is very dark.
  • the rear light sensor senses that the headlights of other cars are behind the car, and the reflection of the variable reflectivity lens in the rearview mirror The rate changes inversely with the change of the light incident on the rear view mirror, and the higher the irradiation intensity, the lower the reflectance becomes, thereby achieving the effect of electronic anti-glare.
  • the car enters the reverse state because this time must absolutely see the situation behind, and the LCD screen behind the mirror of the mirror also shows the image of the reverse, so no matter what the front and rear light sensors are.
  • the variable reflectivity lens is the maximum reflectivity, and the intermediate layer medium in the lens is in the most transparent state to ensure that the image of the display can be clearly projected for the driver to see.
  • the image displayed on the LCD screen will appear too strong and difficult to see in the daytime; in the night, there will be a phenomenon in which the outside light is very dark and the LCD image is very blinking;
  • the control circuit inside the rearview mirror outputs an electrical signal to the camera module, and adjusts various parameters of the camera to adapt to the current external light condition. Get clear results.
  • the utility model rearview mirror of the utility model further comprises a video control device
  • the video control device comprises a lamp signal sensing module, a video switching module, an RF remote controller module, a body camera module, Panoramic reversing video synthesis module, display module, and control center module.
  • the body camera module includes a front camera, a front camera, a front left camera, a rear left camera, a front right camera, a rear right camera, a left camera, and a right camera.
  • the lamp signal sensing module is used to sense four signals: left turn flash, right turn flash, high beam headlight flash, and reverse light. These signals are converted into stable continuous high and low level signals to the control center module.
  • the two sets of flashing electric signals of the left turn flash and the right turn flash are processed by the lamp signal sensing module, and become a long-term stable high or low level signal sent to the control center module; the high beam headlights
  • the relevant signal sent by the lamp signal sensing module to the control center module generates a high-low level jump, that is, if the current control center module sends a continuous high level signal, if it is large
  • the lamp flashes once it will send a continuous low level signal. If the headlight flashes again, it will send a continuous high level signal to the control center module, and so on.
  • the video switching module performs the switching of the image in the front, the front left, the left rear, the right front, the right rear, the rear, and the panoramic reversing image according to the command sent by the control center module.
  • supply power to the corresponding camera or when any camera is working, supply power to all cameras, and when all cameras are not working, cut off power to all cameras.
  • the panoramic reversing video synthesizing module is a video of four cameras of a front camera, a front camera, a left camera, and a right camera, or a video of more cameras, and a video is processed to form a panoramic reversing image, which is displayed in On the display.
  • the left camera and the right camera can be replaced by a front left camera or a front right camera, and a rear left camera or a rear right camera, as appropriate.
  • the control center module after receiving the signal from the RF remote control module or the lamp signal sensor module, sends a command to the video switching module to switch the video and supply power to the relevant camera.
  • the display module functions as an image sent by the actual video switching module.
  • the implementation method is as follows: When reversing, when the lamp signal sensing module senses the reversing light signal, the lamp signal sensing module sends a signal to the control center module, and the control center module sends a command to the video switching module to switch the video to On the panoramic reversing image synthesized by the four-way camera, when this time, the car's high-beam headlights flash once, the control center module sends a command to the video switching module to cut the video to the camera behind the car, and the headlights flash again. Go back to the panoramic reversing image, flash again and cut to the camera on the rear of the car, and so on.
  • the control center module controls the video switching module to switch the video to the left.
  • the light signal sensor module senses that the left turn light is flashing
  • the control center module Receiving the left turn signal sent by the lamp signal sensing module, the control center module sends a command to the video switching module, and switches the video to the camera on the left side of the front of the car; if it is a right turn signal, it switches to the car.
  • the control center module On the front right camera; when the car hits the warning light, the left and right turn signals flash at the same time, and the control center module receives the two signals from the left and right turn signals at the same time, the control center module sends a command to the video switching mode. Group, switch the video to the camera directly in front of the car. When the video is in the front left or left, the car headlights flash once, then the car signal sensing module sends a command to the control center circuit, and the control center circuit sends a command to the video switching module, so that the video is in the front left and left. Change between people once.
  • the control center module sends a command to the video switching module to turn off all camera power and video channels.
  • the control circuit automatically supplies power to the corresponding camera; or to simplify the circuit design, when any camera is working, all the cameras are powered at the same time.
  • the multifunctional vehicle rearview mirror of the present invention is further provided with an RF-controlled wireless camera device, which includes two regions of a front part and a rear part.
  • the front part of the vehicle includes an RF remote control transmitting module, a display module, a front RF signal transceiver module, and a video wireless receiving module;
  • the rear part of the vehicle includes a rear RF signal transceiver module and a rear vehicle light signal sensing module. , wireless camera module.
  • wireless camera module In the first case, as shown in Fig.
  • the rear lamp signal sensing module senses that the reversing light is on, and starts to work, and the rear lamp signal sensing module sends a signal to the wireless camera.
  • the module, the rear lamp signal sensing module sends a signal to the rear RF signal transceiver module, and the wireless camera module starts to work after receiving the signal from the rear lamp signal sensing module.
  • the wireless camera module transmits the image to the video wireless receiving module, and the rear RF signal transmitting and receiving module receives the signal from the rear vehicle light signal sensing module, and then starts. jobs.
  • the rear RF signal transceiver module sends a signal to the front RF signal transceiver module.
  • the front RF signal transceiver module receives the signal from the rear RF signal transceiver module and starts to work.
  • the front RF signal transceiver module sends a signal to the video wireless receiving module, and the front RF signal transceiver module sends a signal to the display module.
  • the video wireless receiving module starts. jobs.
  • the video wireless receiving module starts working.
  • the video wireless receiving module transmits the image to the display module, and the display module starts to work after receiving the signal from the front RF signal transceiver module.
  • the display module receives the signal from the video wireless receiving module, it starts to work, and the display module displays the image.
  • the display module displays the image.
  • the display module displays the image. In the second case, as shown in Fig.
  • the RF remote control transmitting module sends a signal to the rear RF signal transceiver module, and the rear RF signal transceiver module receives the signal from the RF remote control transmitting module and starts to work.
  • the rear RF signal transceiver module sends a signal to the wireless camera module, and the rear RF signal transceiver module sends a signal to the front RF signal transceiver module.
  • After the wireless camera module receives the signal from the rear RF signal transceiver module. , start working.
  • the wireless camera module transmits the image to the video wireless receiving module, and the front RF signal transmitting and receiving module receives the signal sent by the rear RF signal transmitting and receiving module, and then starts working.
  • the front RF signal transceiver module sends a signal to the video wireless receiving module, and the front RF signal transceiver module sends a signal to the display module.
  • the video wireless receiving module After receiving the signal from the front RF signal transceiver module, the video wireless receiving module starts. jobs. After receiving the image from the wireless camera module, the video wireless receiving module starts working. The video wireless receiving module transmits the image to the display module, and the display module starts to work after receiving the signal from the front RF signal transceiver module. After the display module receives the signal from the video wireless receiving module, it starts to work, and the display module displays the image. In the third case, as shown in Fig.
  • the RF remote control transmitting module sends a signal to the front RF signal transceiver module, and the front RF signal transceiver module receives the signal from the RF remote control transmitting module and starts to work.
  • the front RF signal transceiver module sends a signal to the rear RF signal transceiver module.
  • the front RF signal transceiver module sends a signal to the video wireless receiver module.
  • the front RF signal transceiver module sends a signal to the display module. After receiving the signal from the front-end RF signal transceiver module, the RF signal transceiver module starts to work.
  • the rear RF signal transceiver module sends a signal to the wireless camera module.
  • the wireless camera module After receiving the signal from the RF signal transceiver module, the wireless camera module starts to work.
  • the wireless camera module transmits the image to the video wireless receiving module.
  • the video wireless receiving module starts to work after receiving the signal from the front RF signal transceiver module.
  • the video wireless receiving module starts working.
  • the video wireless receiving module transmits the image to the display module, and the display module starts to work after receiving the signal from the front RF signal transceiver module.
  • the display module After the display module receives the signal from the video wireless receiving module, it starts to work, and the display module displays the image.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
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  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
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Abstract

一种多功能汽车后视镜,其包括面壳(1),以及设于面壳(1)内的玻璃反射镜面(2)、大尺寸液晶显示器(3)。大尺寸液晶显示器(3)包括大尺寸显示屏(31)和大尺寸显示器驱动板(32)。大尺寸显示屏(31)包括大尺寸显示液晶玻璃(311)和大尺寸显示器背光模组(312)。大尺寸显示器(3)的后面设有大尺寸显示器的固定框(4)和高遮光率介质(5)。在所述固定框(4)和高遮光率介质(5)上开设一小窗口,所述小窗口(6)的后面设有小尺寸背光模组(7)以及控制电路板。同时该后视镜还可以用车灯信号实现对多个摄像头的自动切换控制,以及利用在后视镜和摄像头线路上嵌入小功耗的RF模块,来实现对整个系统的视频切换和信息传递。该后视镜的结构简单、外形美观,后视镜反射面积最大化,并且提高了驾驶视野,利于安全驾驶。

Description

一种多功能汽车后视镜 技术领域
本实用新型涉及汽车配件领域, 更具体地说, 涉及一种多功能汽车后视镜。 背景技术
驾驶员通过汽车后视镜, 有以下需求:
1、 希望可以通过后视镜内部的显示器, 看到车身外的各个方位, 车的前后左右, 实 现自由或自动地各个摄像头视频之间的切换; 这有几个问题难以解决, 一个是各个摄像头 的电源开启以及视频传送和接收端之间的配合问题; 还有就是无线视频发送和接收模块, 不可以长时间通电待机, 在需要某一路视频发射和接收模组开启的时候, 需要专门的车灯 信号对其进行开启。 而实际装车的时候, 部分汽车在车后部容易连接到倒车灯信号, 但是 在车前部却无法取得倒车灯信号, 只能很麻烦地从车后部引线, 为车前的后视镜显示器取 到倒车信号, 我们采用嵌入两个 RF收发模块的方式, 将车后的倒车灯信号发送给车前部 后视镜显示器, 成功地解决了这些问题。
现有的汽车后视镜内部嵌入一个无线视频接收模块,这个无线视频接收模块如果平时 一直处于开启状态, 则很容易受到其他接近频率的干扰, 扰乱正常的驾驶。 我们的后视镜 中除了视频无线接收模块以外, 还嵌入一个 RF接收模块, 视频接收模块的电源受到这个 RF接收模块的控制。 汽车的后方由摄像头、 无线视频发射模块、 RF信号接收发射模块三 个组件构成, 这三个组件的电源连接方式有两种:
一种方法是三个组件的电源都连接到倒车灯, 当挂了倒档的时候倒车灯会自动有电, 倒车灯的电传递给三个组件后, 视频发射模块会把摄像头的视频发射出去, RF 模块会发 送信号给汽车后视镜内部的 RF接收模块, 使得其给视频接收模块通电, 最终后面摄像头 的图像显示到后视镜的显示屏上; 这种方式的缺点是车主必须挂了倒档, 才可以看到后方 的情况, 有时候在高速公路上高速前行的时候想看后方, 无法切换视频到后面。
另外一种接线方式是汽车的 ACC点火线电源和倒车等电源,都接到车后 RF接收发射 模块的控制系统中, 当挂了倒档的时候, 系统动作情况跟前一种情况相同; 当车高速行 驶无法挂倒档或车主不想挂倒档的时候, 但是车主却想看到车后情况的时候, 车主可以通 过按动手边的一个 RF发射遥控器, 发车一个指令被摄像头旁边的 RF收发模块收到, 这个 RF模块会发信号给后视镜 RF接收模块去开启后视镜内部的视频接收和显示系统, 同时车 后的 RF收发模块打开开关, 给摄像头和视频发射模块供电。 最终让摄像头的图像显示到 后视镜显示屏上。
2、 汽车行驶的时候, 人们希望后视镜镜面上, 可以显示指南针, 温度, 蓝牙来电信 息等等信息, 而且显示的区域要尽量小, 显示面积小的原因是这个区域因为显示了图文信 息, 所以不可以作为后视镜来看车后面了, 而人们希望用来看车后部的反射镜面面积可以 最大化, 以增加后视的视角和视野, 提高行车的安全。 专门在后视镜中安装一个小尺寸的 显示器,成本会提高, 同时小尺寸而且高亮度的显示屏也很少有厂家生产,而且价格很高, 会增加产品成本。 很多车内后视镜中, 都有内嵌一个 2. 0寸到 10. 2寸之间的显示器, 用 来观看倒车时候的车后摄像头视频或其他 DVD等视频。这个显示器平时车不倒车的时候很 少开启使用。 显示器的工作原理是, 显示器驱动板给显示液晶玻璃提供显示信号, 同时有 其他光线照射到显示液晶玻璃上, 就会有图像被人肉眼看到实现显示功能; 射到显示液晶 玻璃上的光线, 可以是发自显示器背光模组, 也可以是发自小尺寸背光模组。 我们通过 在后视镜内的显示器后面开一个窗口, 增加一个小尺寸的背光, 关闭显示器的背光, 开启 显示器的显示液晶玻璃, 输出窗口区域有图文信息, 而其他非窗口区域输送黑色图像, 同 时让小尺寸背光发出的光, 透过在显示器背光区域开的小窗口投射到显示液晶玻璃上, 从 而一个小尺寸图像显示区域可以清晰被驾驶者看到。 达到了在行车的时候, 车内的后视 镜上, 有一个很小尺寸的屏幕在显示信息的效果。 一个显示器行车的时候可以做小尺寸显 示器使用, 倒车或显示 DVD等信号的时候可以做摄像头或 DVD等视频信号的显示器, 一套 硬件两种用法, 节省了成本, 而且使得后视镜反射面积最大化。
如图 1所示, 传统的多功能后视镜, 其包括外壳 1, 以及安装在外壳内的镜面 2, 液 晶显示器 3, 液晶显示器 3包括液晶显示屏 31和背光 (图中未示出), 显示屏 31上设有 小尺寸显示区域 311, 这种多功能后视镜, 在显示倒车摄像头或 DVD等视频需要全屏幕显 示的时候, 液晶显示器上的背光亮; 当车向前方行驶需要在后视镜有一个小尺寸区域显示 一些图文信息的时候, 因小尺寸显示区域 311—般不会覆盖整个屏幕, 依照传统的方法, 除了小尺寸显示区域 311发光外, 屏幕的其他区域也会背光发亮, 即使其他区域输出的是 黑色图像, 从后视镜外部也会看到其他区域发出微微光线, 不美观, 会影响驾驶。 我们的 解决方案是小尺寸区域要显示的时候,关闭显示器的背光,只开启增加的那个小尺寸背光, 这样显示器的其他区域失去了光源,就会彻底漆黑一片,不会有光透过玻璃被驾驶者看到。 实用新型内容
本实用新型所要解决的技术问题是提供一种结构简单、外形美观且益于安全驾驶的多 功能汽车后视镜。 为了解决上述技术问题, 本实用新型采用了以下技术方案:
一种多功能汽车后视镜, 其包括面壳, 以及设于面壳内的玻璃反射镜面、 大尺寸液晶 显示器, 所述大尺寸液晶显示器包括大尺寸显示屏和大尺寸显示器驱动板, 所述大尺寸显 示屏包括大尺寸显示液晶玻璃和大尺寸显示器背光模组,所述大尺寸显示器的后面设有大 尺寸显示器的固定框和高遮光率介质, 在所述固定框和高遮光率介质上开设一小窗口, 所 述小窗口的后面设有小尺寸背光模组以及控制电路板。
所述小尺寸背光模组的背光面形状大小与小窗口类似,所述小尺寸背光模组的发光面 透过小窗口紧贴在大尺寸显示器的后面。
所述小尺寸背光的前方设有高单向反射率和高单向透光率的介质层。
在所述后视镜上靠近驾驶员眼睛的一面设有后壳光线传感器、靠近车挡风玻璃的一面 设有前壳光线传感器。
所述玻璃反射镜面采用内部注入 LCD或采用染色液晶材料制成。
所述后视镜内设有 RF收发模块, 后视镜内的 RF收发模块通过 RF遥控器与汽车摄像 头内的 RF收发模块之间进行 RF无线控制和数据传输。
所述后视镜后部嵌入两个可以调整方向的摄像头, 可进行 DVR摄录。
所述后视镜内设有视频控制装置, 所述视频控制装置包括车灯信号感应模组、 视频切 换模组、 RF遥控器模组、 车身摄像头模组、 全景倒车视频合成模组、 显示屏模组、 控制 中心模组, 所述视频控制装置通过感应车的远光大灯、 左转灯、 右转灯、 倒车灯来自动切 换视频通道。
由于采用了上述结构, 本实用新在后视镜内部的显示器后面增加一个小尺寸的背光, 实现在后视镜中, 既有一个小尺寸显示器, 也有一个大尺寸显示器的效果, 即可实现后视 镜显示屏功能多样化的情况下不影响行车安全, 既方便又使用。 而且使汽车后视镜看起来 更美观, 同时避免了因背光过强而影响驾驶的问题。
在结合附图阅读本实用新型的实施方式的详细描述后, 本实用新型的特点和优点将变 得更加清楚。 附图说明
图 1是习用产品结构示意图;
图 2是本实用新型的分解示意图;
图 3是本实用新型的全屏显示状态示意图;
图 4是本实用新型的信息提示区显示状态示意图; 图 5是本实用新型的液晶显示器分解示意图;
图 6是本实用新型的视频控制装置连接示意图;
图 7是本实用新型的 RF无线摄像头装置的工作示意图一;
图 8是本实用新型的 RF无线摄像头装置的工作示意图二;
图 9是本实用新型的 RF无线摄像头装置的工作示意图三。
具体实施方式
下面以一个实施方式对本实用新型作进一步详细的说明, 但应当说明, 本实用新型的 保护范围不仅仅限于此。
参阅图 1-5, 一种多功能汽车后视镜, 其包括面壳 1, 以及设于面壳 1 内的玻璃反射 镜面 2、 大尺寸液晶显示器 3, 所述大尺寸液晶显示器 3包括大尺寸显示屏 31和大尺寸显 示器驱动板 32, 所述大尺寸显示屏 31包括大尺寸显示液晶玻璃 311和大尺寸显示器背光 模组 312, 所述大尺寸显示器 3的后面设有大尺寸显示器的固定框 4和高遮光率介质 5, 在所述固定框 4和高遮光率介质 5上开设一小窗口 6, 所述小窗口 6的后面设有小尺寸背 光模组 7以及控制电路板 8。 所述小尺寸背光模组 7的背光面形状大小与小窗口 6类似, 所述小尺寸背光模组 7的发光面透过小窗口紧贴在大尺寸显示器 3的后面。
大尺寸液晶显示器 3的工作原理是, 大尺寸显示器驱动板 32给显示液晶玻璃 311提 供显示信号, 同时有其他光线照射到显示液晶玻璃 311上, 就会有图像被人肉眼看到实现 显示功能; 射到显示液晶玻璃 311上的光线, 可以是发自大尺寸显示器背光模组 312, 也 可以是发自小尺寸背光模组 7; 小尺寸背光模组 7发光面紧贴在大尺寸液晶显示器 3的后 面某个区域,挖掉从小尺寸背光发光表面到显示器液晶玻璃 311之间的高遮光率介质 5和 大尺寸液晶显示器 3外部的固定框, 同时保留这个小区域低遮光率介质, 在显示器上形成 一个与小尺寸背光面形状类似的一个透光小窗口 6。 平时汽车正常行驶的时候, 关闭显示 器的背光灯, 但是大尺寸显示器驱动板 32仍然往显示器液晶玻璃 311上发射视频信号, 给小尺寸背光灯供电, 小尺寸背光发出的光透过小窗口 6部分, 照射到显示液晶玻璃 311 上的一个特定区域, 这样就在这个特定的区域形成了一个小尺寸的图像。 这个小尺寸的 图像是利用了显示器的液晶显示玻璃和外加的小尺寸背光来实现的。 这个小尺寸的图像 在汽车行驶的时候, 可以用来显示指南针, 温度, 蓝牙来电信息, 流动雷达信息, 车内信 息等等各种图像信息。从显示器输送过来的图像中, 只有开了小尺寸窗口的部分有图像信 息, 其他所有区域都是纯黑色的图像信号, 加上其他所有区域也没有背光灯的照射, 就 使得显示器其他区域和后视镜反光镜子的其他区域, 后部完全是漆黑的, 这样以来整个后 视镜只有小尺寸背光对应的区域有图像, 其他区域完全是正常的反光镜功能, 这样就可以 确保平时开车的时候,驾驶员可以最大面积地利用车内后视镜的反光镜面,确保行车安全。 当汽车倒车的时候或者后视镜要播放 DVD等其他视频图像的时候,显示器液晶显示玻璃会 显示摄像头或 DVD等图像, 开启液晶显示器的背光, 关闭或调节小尺寸背光亮度, 这样整 个液晶显示器就会完全正常工作。但是这个时候, 因为小尺寸背光对应的部分去掉了部分 介质, 观看这个屏幕的时候, 会发现这个小区域有些偏暗淡, 为了弥补这个缺陷, 有三个 方法解决, 一是在这个小区域补上一块单向高透光率同时还具有单向高反射率的介质, 这 样使得小背光的光线可以高效通过, 同时大尺寸背光灯发的光可以高效地反射出来, 这种 方法可以大大地降低这个小区域的暗淡状况; 二是整个大背光的最接近小背光一层, 全都 使用单向高透光率而且单向高反射率的介质, 这样可以改善小区域暗淡的问题; 三是让小 尺寸背光也发出一定强度的光, 来弥补这个区域的暗淡; 以上三个方法可以单独实施也 可以组合或一起实施, 最终使得这个区域的暗淡问题得到改善。
如图 2所示,本实用新型的多功能汽车后视镜,后视镜前方和后方分别安装光感应器, 后视镜上靠近驾驶员眼睛的一面安装一个光感应器件, 我们称之为后光感应器 12 ; 靠近 车挡风玻璃的方向安装一个光感应器件, 我们称之为前感应器 11 ; 摄像头模组包括镜头 和相关的伺服电路; 显示器模组包括显示器驱动电路板和显示液晶屏。 反射率可变镜片由 3层构成, 靠近驾驶员的一面是纯透明玻璃, 靠近后视镜内部的一层是度了一层高反射率 反射膜的玻璃, 两层的中间灌入化学胶体或液晶或染色液晶等介质, 这些介质在未通电的 时候都是高透明的, 光线可以穿过并且反射回去; 当通电的时候, 随着通电电压或电流或 频率的变化, 这些介质的透光率发生变化, 整个反光镜的反光率也会发生相应的变化。 当 前感应器感应到光线很强, 是白天的光亮度的时候, 无论后光感应器感应到任何值, 后视 镜内反射率可变镜片的反射率不发生变化, 一直保持最大的反射率; 当前感应器感应到光 线很暗, 汽车是在黑夜里的时候, 后光感应器感应到车后方有其他汽车的大灯照射到后视 镜上, 则后视镜内反射率可变镜片的反射率, 随着照射到后视镜上的光线变化而反比例变 化, 照射强度越高反射率变得越低, 以此, 达到电子防炫目的效果。 当汽车进入倒车状态 的时候, 因为这个时候必须要绝对看清楚后方的情况, 而且后视镜反光镜片后面的液晶屏 幕也要显示倒车的图像出来, 所以这个时候无论前后光感应器是怎样的状况, 反射率可变 镜片都是最大反射率, 镜片内的中间层介质处于最透明的状态, 以确保显示器的图像可以 清晰地投射出来让驾驶员看到。 液晶屏幕显示的图像, 在白天会出现外界光线太强, 难以 看清楚的现象; 而在夜里又会出现外界光线很暗, 液晶屏图像很剌眼的现象; 为此, 通过 前后两个光感应器感应到的光线强度, 输出电信号显示器模组, 让显示器模组白天则增加 液晶屏背光亮度、 调节对比度、 彩色度等参数, 使得图像容易被驾驶员看到; 夜间则降低 背光亮度, 同时改变其他参数, 使得图像不剌眼, 驾驶员可以在夜间看到清晰的图像。 根 据后视镜上前光感应器感应到的光线强度状况, 通过后视镜内部的控制电路, 输出电信号 给摄像头模组, 调节拍摄摄像头的各项参数, 使之适应当前的外界光线状况, 获得清晰的 拍摄效果。
如图 6所示, 本实用新型的多功能汽车后视镜还设有视频控制装置, 视频控制装置 包括车灯信号感应模组、 视频切换模组、 RF 遥控器模组、 车身摄像头模组、 全景倒车视 频合成模组、 显示屏模组、 控制中心模组。 其中车身摄像头模组包括车正前方摄像头、 正 后方摄像头、前左摄像头、后左摄像头、 前右摄像头、后右摄像头、左摄像头、右摄像头。 车灯信号感应模组用来感应左转闪灯、 右转闪灯、 远光大灯闪灯、 倒车灯四种信号。 将这些信号转换成稳定持续地高低电平信号给控制中心模组。左转闪灯、右转闪灯这两组 闪动电信号经过车灯信号感应模组处理后,变成了长期稳定的高或低电平信号发送给控制 中心模组;远光灯大灯每闪动一次,则车灯信号感应模组给控制中心模组发动的相关信号, 发生一次高低电平跳转, 即如果当前给控制中心模组发送的是持续的高电平信号, 如果大 灯闪动一次则改为输送持续的低电平信号,如果大灯再闪一次又变成输送持续高电平信号 给控制中心模组, 以此类推变化。 视频切换模组根据控制中心模组发来的命令, 来完成视 频在前方、 左前、 左后、 右前、 右后、 正后方、 全景倒车图像 7个图像或更多路图像的切 换。 同时切换到相应摄像头的时候, 给相应的摄像头供电; 或者任何一个摄像头要工作的 时候, 给所有摄像头都供电, 当所有摄像头都不工作的时候, 切断给所有摄像头的供电。
RF遥控器模组上, 有很多按键, 每个按键各对应车身四周的某个特定的摄像头, 当按下 遥控器上某个按键的时候, 视频自动切换到相应的通道上, 并且给相应的摄像头供电, 最 终相应的摄像头图像显示在显示屏上, 当按动新的按键或有车灯信号输入的时候, 退出当 前的摄像头显示状态并且关闭当前摄像头。全景倒车视频合成模组是将正前方摄像头、 正 后方摄像头、 左摄像头、 右摄像头四个摄像头的视频, 或更多摄像头的视频, 通过视频处 理叠合成一个画面形成一个全景倒车的图像, 显示在显示屏上。 其中的左摄像头和右摄像 头, 可以酌情用前左摄像头或前右摄像头, 和后左摄像头或后右摄像头代替。 控制中心模 组, 作用是接到 RF遥控器模组或车灯信号感应器模组传来的信号之后, 发送指令给视频 切换模组切换视频并且给相关的摄像头供电。显示屏模组作用是现实视频切换模组送来的 图像。
实现方法如下: 当倒车的时候, 车灯信号感应模组感应到倒车灯信号的时候, 车灯信号感应模组给 信号到控制中心模组, 控制中心模组发指令给视频切换模组, 将视频切换到四路摄像头合 成的全景倒车图像上, 当这个时候, 车远光大灯闪动一次, 控制中心模组发指令给视频切 换模组将视频切到车后方的摄像头上, 大灯再闪动一次切换回全景倒车图像上, 再闪动一 次又切到车后方摄像头上, 以此类推变换。 在倒车的时候, 如果打左转灯, 即车灯信号感 应模组同时发送倒车灯和左转灯信号给控制中心模组, 则控制中心模组控制视频切换模 组, 将视频切换到左后方的摄像头上; 如果是倒车时候同时打右转灯, 则切换到右后方的 摄像头上; 当车要左转, 车灯信号感应模组感应到左转灯闪动的时候, 控制中心模组收到 车灯信号感应模组发来的左转灯信号, 控制中心模组发指令给视频切换模组, 将视频切换 到车前左方的摄像头上; 如果是右转灯信号则切换到车前右方的摄像头上; 当汽车打警示 灯的时候, 左右两边的转向灯同时闪动, 控制中心模组同时收到左右转向灯两路信号的时 候, 控制中心模组发指令给视频切换模组, 将视频切换到车正前方的摄像头上。 当视频在 左前或左后的时候, 汽车大灯闪动一次则车灯信号感应模组发送一次指令给控制中心电 路, 控制中心电路发指令给视频切换模组, 使得视频在左前和左后二者之间变化一次。 即 如果当前是在左前摄像头视频显示状态, 如果感应到大灯闪动一次, 则视频变换为左后摄 像头; 如果再次感应到车大灯闪动则视频变换回到左前摄像头显示状态, 以此类推变换。 当相关的车灯信号消失的时候, 控制中心模组发指令给视频切换模组, 关闭所有摄像头电 源和视频通道。 以上切换方式, 灵活地运用的车上触手可及的倒车档、 左转向灯、 右转向 灯、 闪大灯四个控件, 实现了摄像头在前方、 左前、 左后、 右前、 右后、 正后方、 全景倒 车图像 7个图像的切换, 方便又人性化, 具有很好的以操控性。 因为摄像头长期通电工作 会发热, 容易损坏, 所以摄像头不可以长期通电。 上述所有状态下, 当视频要切换到某一 路摄像头的时候, 控制电路自动给相应的摄像头供电; 或者为了简化电路设计, 当任意一 个摄像头工作的时候, 给所有的摄像头都同时供电。
如图 7-9所示, 本实用新型的多功能汽车后视镜, 还设置有 RF控制的无线摄像头装 置, 包括车前部分和车后部分两个区域。 其中车前部分包括 RF遥控器发射模组、 显示器 模组、 车前 RF信号收发模组、 视频无线接收模组; 车后部分包括车后 RF信号收发模组、 车后车灯信号感应模组、 无线摄像头模组。 第一种情况, 如图 8, 倒车时, 倒车灯发亮, 车后车灯信号感应模组感应到倒车灯发亮, 开始工作, 车后车灯信号感应模组发出信号给 无线摄像头模组, 车后车灯信号感应模组发出信号给车后 RF信号收发模组, 无线摄像头 模组收到车后车灯信号感应模组发出的信号后, 开始工作。无线摄像头模组将图像传给视 频无线接收模组, 车后 RF信号收发模组收到车后车灯信号感应模组发出的信号后, 开始 工作。 车后 RF信号收发模组发出信号给车前 RF信号收发模组, 车前 RF信号收发模组收 到车后 RF信号收发模组发出的信号后, 开始工作。车前 RF信号收发模组发出信号给视频 无线接收模组, 车前 RF信号收发模组发出信号给显示器模组, 视频无线接收模组收到车 前 RF信号收发模组发出的信号后, 开始工作。 视频无线接收模组收到无线摄像头模组发 出的图像后, 开始工作。 视频无线接收模组将图像传给显示器模组, 显示器模组收到车前 RF信号收发模组发出的信号后, 开始工作。 显示器模组收到视频无线接收模组发出的信 号后, 开始工作, 显示器模组显示图像。 第二种情况, 如图 9, RF遥控器发射模组发出信 号给车后 RF信号收发模组,车后 RF信号收发模组收到 RF遥控器发射模组发出的信号后, 开始工作。车后 RF信号收发模组发出信号给无线摄像头模组, 车后 RF信号收发模组发出 信号给车前 RF信号收发模组, 无线摄像头模组收到车后 RF信号收发模组发出的信号后, 开始工作。 无线摄像头模组将图像传给视频无线接收模组, 车前 RF信号收发模组收到车 后 RF信号收发模组发出的信号后, 开始工作。车前 RF信号收发模组发出信号给视频无线 接收模组, 车前 RF信号收发模组发出信号给显示器模组, 视频无线接收模组收到车前 RF 信号收发模组发出的信号后, 开始工作。视频无线接收模组收到无线摄像头模组发出的图 像后, 开始工作。 视频无线接收模组将图像传给显示器模组, 显示器模组收到车前 RF信 号收发模组发出的信号后, 开始工作。 显示器模组收到视频无线接收模组发出的信号后, 开始工作, 显示器模组显示图像。 第三种情况, 如图 10, RF遥控器发射模组发出信号给 车前 RF信号收发模组, 车前 RF信号收发模组收到 RF遥控器发射模组发出的信号后, 开 始工作。 车前 RF信号收发模组发出信号给车后 RF信号收发模组, 车前 RF信号收发模组 发出信号给视频无线接收模组, 车前 RF信号收发模组发出信号给显示器模组, 车后 RF信 号收发模组收到车前 RF信号收发模组发出的信号后, 开始工作。 车后 RF信号收发模组发 出信号给无线摄像头模组, 无线摄像头模组收到车后 RF信号收发模组发出的信号后, 开 始工作。 无线摄像头模组将图像传给视频无线接收模组。 视频无线接收模组收到车前 RF 信号收发模组发出的信号后, 开始工作。视频无线接收模组收到无线摄像头模组发出的图 像后, 开始工作。 视频无线接收模组将图像传给显示器模组, 显示器模组收到车前 RF信 号收发模组发出的信号后, 开始工作。 显示器模组收到视频无线接收模组发出的信号后, 开始工作, 显示器模组显示图像。 虽然结合附图描述了本实用新型的实施方式,但是本领域的技术人员可以在所附权利 要求的范围之内作出各种变形或修改,只要不超过本实用新型的权利要求所描述的保护范 围, 都应当在本实用新型的保护范围之内。

Claims

权 利 要 求 书
U 一种多功能汽车后视镜, 其包括面壳, 以及设于面壳内的玻璃反射镜面、 大尺寸 液晶显示器, 所述大尺寸液晶显示器包括大尺寸显示屏和大尺寸显示器驱动板, 所述大尺 寸显示屏包括大尺寸显示液晶玻璃和大尺寸显示器背光模组, 其特征在于: 所述大尺寸显 示器的后面设有大尺寸显示器的固定框和高遮光率介质,在所述固定框和高遮光率介质上 开设一小窗口, 所述小窗口的后面设有小尺寸背光模组以及控制电路板。
2、 如权利要求 1所述的一种多功能汽车后视镜, 其特征在于: 所述小尺寸背光模组 的背光面形状大小与小窗口类似,所述小尺寸背光模组的发光面透过小窗口紧贴在大尺寸 显示器的后面。
3、 如权利要求 1所述的一种多功能汽车后视镜, 其特征在于: 所述小尺寸背光的前 方设有高单向反射率和高单向透光率的介质层。
4、 如权利要求 1所述的一种多功能汽车后视镜, 其特征在于: 在所述后视镜上靠近 驾驶员眼睛的一面设有后壳光线传感器、 靠近车挡风玻璃的一面设有前壳光线传感器。
5、 如权利要求 1所述的一种多功能汽车后视镜, 其特征在于: 所述玻璃反射镜面采 用内部注入 LCD或采用染色液晶材料制成。
6、 如权利要求 1所述的一种多功能汽车后视镜, 其特征在于: 所述后视镜内设有 RF 收发模块, 后视镜内的 RF收发模块通过 RF遥控器与汽车摄像头内的 RF收发模块之间进 行 RF无线控制和数据传输。
7、 如权利要求 1所述的一种多功能汽车后视镜, 其特征在于: 所述后视镜后部嵌入 两个可以调整方向的摄像头, 可进行 DVR摄录。
8、 如权利要求 1所述的一种多功能汽车后视镜, 其特征在于: 所述后视镜内设有视 频控制装置, 所述视频控制装置包括车灯信号感应模组、 视频切换模组、 RF遥控器模组、 车身摄像头模组、 全景倒车视频合成模组、 显示屏模组、 控制中心模组, 所述视频控制装 置通过感应车的远光大灯、 左转灯、 右转灯、 倒车灯来自动切换视频通道。
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