JP2007216794A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a vehicle capable of displaying a rear visual field at low cost. <P>SOLUTION: This display device for the vehicle has a complex display device 2 furnished with a display 40 to output a composite image composed by accumulating a first image 500 and a second image 400 on a common screen region and an image separation part 41 to take out information of the first image 500 and information of the second image 400 accumulated and displayed on the display 40 and included in the composite image by separating them in the previously specified first outgoing direction B and second outgoing direction A and additionally has an image input part 30 to input the rear photographed image 500 as the first image 500 and to input a driving reference image different from the rear photographed image as the second image 400 to the complex display device 2, and a reflection member 50 to reflect the rear photographed image separated in the first outgoing direction B from the complex display device 2 in a direction visible from a seat 103 is provided on it. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle display device, and more particularly to a vehicle display device that displays a rear view of a vehicle.

  In conventional vehicles, it is common to use an inner mirror to check the rear field of view. However, in recent years, a display is used in place of the inner mirror, and images captured by a CCD camera for rear field imaging are displayed on the display. There is a rear visual field display device (rear monitoring device) that projects the image (Patent Document 1).

JP-A-8-207661

  However, the conventional rear-view display device has a problem of high cost because a dedicated display is used instead of the inner mirror. Recently, the conventional inner mirror attached to the upper center of the front windshield and the rear view display device of Patent Document 1 have been removed, and there is a demand for a wider front view. There is also a desire to improve the visibility of the driver by disposing it further away from the driver to increase the focal length.

  The present invention has been made in view of the above-described problems, and has a wider front field of view through the front windshield than conventional ones, and can be used for a vehicle capable of rear field display capable of improving the visibility of rear field images. An object is to provide a display device at low cost.

In order to solve the above problems, a vehicle display device according to the present invention includes:
A display that outputs a composite image obtained by superimposing and synthesizing a first video and a second video different from the first video on a common screen area, and a first video included in the composite video that is superimposed on the display. A composite display device comprising: a video separation unit that separates and extracts information and second video information into a predetermined first emission direction with respect to the display and a second emission direction different from the first emission direction; ,
The composite display device has a video input unit for inputting a driving reference video different from the rear shot video as a second video while inputting a rear shot video obtained by shooting the vehicle rear view as a first video,
A reflection member is provided that reflects a rear shot image separated from the composite display device in the first emission direction in a direction that can be viewed from the seat.

  According to the said structure, the display screen used for a navigation apparatus etc. is comprised by the composite display apparatus which outputs the synthetic | combination image | video which overlap | superposed and combined two images | videos. Then, a first image forming a rear shot image is optically separated and extracted using a reflecting member from the two images superimposed on the composite display device. In addition, an operation reference image such as an output screen of the navigation device is directly viewed as a second image from the display of the composite display device. As a result, the display of the composite display device can also be used as a display that outputs a rear shot video, and the rear shot video is displayed using reflection of a reflecting member such as a mirror. There is no need to provide a separate display for displaying the cost, and the cost can be reduced.

  The driving reference video is a generic term for images required for driving the vehicle other than the rear shot video. In addition to the navigation device video, the vehicle front shot video (in particular, an obstacle highlighting display). Etc.) or an air conditioner control image.

  In the vehicle display device of the present invention, the driving reference image on the composite display device can be directly viewed from the seat by matching the viewing direction of the composite display device from the seat with the second emission direction. The arrangement direction of the composite display device can be determined. According to this configuration, the driver in the front seat can visually recognize the first image from the reflecting member and directly recognize the second image from the display. The first image will be viewed using the reflection of the reflecting member, but the second image can be viewed directly from the display, so it can be configured simply with a minimum number of reflecting members, Cost can also be reduced.

  In the vehicular display device of the present invention, the rear shot image has an apparent aspect ratio different from the actual aspect ratio on the display when viewed as a reflection image from the reflecting member, and the rear image is taken on the display. An image can be output with its dimensions expanded in a corresponding direction in accordance with the difference ratio between the actual aspect ratio and the apparent aspect ratio. When the display is arranged so that the driver can directly view the second image, the first image from the display is reflected, and the reflective member is arranged so that the driver can visually recognize the reflected image. The reflecting surface of the member cannot be viewed directly, and the reflecting surface is viewed from an oblique direction. In this case, the driver sees the entire image as a size-compressed image rather than the image output on the display. According to the above configuration, the video output to the display is expanded and output in advance, so that the aspect ratio of the reflected video viewed by the driver approaches the actual aspect ratio of the captured video, and the rear video shot is viewed. And it becomes easier to grasp the contents.

  In the vehicle display device of the present invention, the reflective member is disposed adjacent to the upper edge side of the display, and the rear image viewed from the seat as a reflected image from the reflective member is apparently horizontally long from the display. Can be projected. According to the above configuration, the reflected image reflected on the reflecting surface of the reflecting member appears to be compressed in the vertical direction. As a result, the driver can visually recognize the rear shot image with a horizontally long shape similar to that of an inner mirror of a normal vehicle, and the discomfort is small. Moreover, the effect which a reflection member prevents the direct sunlight which hits a display by providing a reflection member in the display upper part can also be anticipated. Furthermore, when the reflecting member is composed of a magnifying mirror (concave mirror), the focal length is longer than that of a normal inner mirror provided in the upper center of the front windshield by disposing the display at the upper center of the instrument panel. There is also an advantage that can be.

  In the vehicular display device of the present invention, the rear shot image on the display can be output as a reflection image from the reflecting member in the vertical direction as compared with the rear shot image viewed from the seat. As a result, even a reflection image compressed in the vertical direction can be viewed with the same aspect ratio as the actually captured image, and is easy to see.

  In the vehicle display device of the present invention, the reflecting member can be arranged adjacent to one edge side in the width direction of the display. According to this configuration, since the reflecting member does not protrude upward, it is difficult for the reflecting member to obstruct the front view through the front windshield.

  In the vehicular display device of the present invention, the rear shot image can be displayed horizontally using only the upper partial area on the display screen. As a result, the driver can view the rear shot image with a horizontally long screen frame similar to the inner mirror of a normal vehicle, and outputs another video at the lower part of the display screen to provide other information (for example, It is also possible to acquire other driving reference images and the like.

In the vehicle display device of the present invention, it is possible to change the reflection direction of the rear shot image toward the seat of the reflecting member. According to this configuration, the reflection angle can be adjusted, and even when drivers with different sitting heights board, it is possible to arrange the reflection surface at an appropriate position by adjusting the angle. In this case, if the display is arranged at the center upper part of the instrument panel, it is possible to project the rear image directly from the reflecting surface of the reflecting member by adjusting the angle, and it is possible to cope with a display failure. .

  In the vehicle display device of the present invention, the reflecting member is coupled along one edge of the display of the composite display device via a hinge portion, and the angle of attachment of the reflecting member to the display can be changed by the hinge portion. As a result, the reflection angle can be adjusted manually.

  In the vehicle display device of the present invention, the reflecting member is disposed so as to be openable and closable between a closed position that covers the display surface of the composite display device and an open position where the reflected image of the rear shot image can be viewed from the seat. Yes. Thereby, it can function as a lid | cover which covers and protects a display by making a reflection member into the said closed position at the time of unused.

  In the vehicle display device of the present invention, it is possible to provide an opening / closing drive unit that drives the reflection member to open and close between the closed position and the open position. Accordingly, it is possible to configure to automatically open and close as described above according to the necessity of the rear shot image. For example, the reflection member can be configured to automatically open and close when the ignition switch is turned on / off with respect to the accessory position or turned on / off with respect to the ignition position.

  Hereinafter, the display apparatus for vehicles of the present invention is explained using a drawing. FIG.1 and FIG.2 is a figure which shows simply the inside of the vehicle 100 by which the display apparatus 1 for vehicles of this invention is mounted. As shown in FIG. 1, the vehicle display device 1 of the present invention includes a display 40 and a reflecting member 50 (for example, a concave mirror) provided so as to cover the display 40 from the upper side on the upper edge side. Are configured to include the display device 2 connected by the connecting unit 60, and the display surface of the display 40 and the reflecting surface of the reflecting member (mirror) 50 are opposed to each other. In the present embodiment, the display 40 is fixed at the upper center of an instrument panel (hereinafter, abbreviated as instrument panel) beside the steering wheel 101 of the vehicle, and the driver 90 can see the display surface of the display 40 facing almost directly. Placed in. On the other hand, the reflecting member 50 is disposed so as to be inclined with respect to the line-of-sight direction of the driver 90, and the reflected image of the display 40 is projected on the reflecting surface, and is displayed as a horizontally long image compressed in the vertical direction from the driver. appear. The display 40 is a two-screen display that displays different images in full screen from two different directions. As a result, different images are displayed on the display 40 and the reflecting member 50 visually recognized by the driver.

  The connecting portion 60 is configured as a hinge shaft in the present embodiment, and can hold an arbitrary angular position by sliding friction. Thereby, it is possible to open and close between the closed position that covers the entire display surface of the display 40 and the open position where the image projected on the reflecting member 50 from the driver's seat 103 can be visually recognized. Functions as a lid that covers and protects the display surface of the display 40.

  FIG. 3 shows a block diagram of the vehicle display device 1 of the present invention. The vehicle display device 1 shown in FIG. 3 mainly includes a control ECU 3 including image capturing units 10 and 20 and an image data generation unit (video input unit) 30 and the display device 2 described above. Yes. Each of the image capturing units 1 and 2 of the control ECU 3 includes frame memories 10a and 20a that temporarily store an input image. The image capturing unit 1 is connected to a well-known rear-view CCD camera 11 (rear-photographing means 201 in FIG. 4). : Is displayed as a rear image in FIG. A well-known car navigation device 12, a well-known air conditioner device 13, and a well-known front photographing CCD camera 14 (front photographing means 202 in FIG. 4) for photographing the front of the vehicle are connected to the image capturing unit 2. Display data to be displayed on the screen for navigation from the navigation device 12, display data to be used as an air conditioner operation screen from the air conditioner device 13, and a front shot image obtained by photographing the front of the vehicle from the CCD camera 14 for front shot (see FIG. 3, the front image and display) are input. In addition, the image capturing unit 2 includes a navigation screen priority switch 22 that preferentially displays a navigation screen, an air conditioner screen priority switch 23 that preferentially displays an air conditioner operation screen, a front screen priority switch 24 that preferentially displays a forward video image, and a screen OFF. The switches are connected, and these operation switches 22 to 25 can set which of the input images is preferentially inputted and stored in the frame memory 20a. The image data generation unit 30 stores the video data stored in the frame memories 10 a and 20 a of the image capturing units 1 and 2 in its own frame memory 30 a and outputs the video data to predetermined pixels of the display 40. The rear-facing CCD camera may be at least a position where the rear of the vehicle can be photographed, and a dedicated CCD camera may be installed near the rear window behind the rear seat. It may be in the form of using a camera.

  The display 40 is a two-screen display that displays different images in full screen from two different directions (composite display device). The display 40 is composed of a known color liquid crystal display, and includes a dot matrix LCD (Liquid Crystal Display) and a driver circuit for performing LCD display control. The driver circuit uses, for example, an active matrix driving method in which a transistor is attached to each pixel so that the target pixel can be reliably turned on and off, and is based on a display command and display screen data sent from the control circuit 8. To display. As the display 40, an organic EL (ElectroLuminescence) display, a plasma display, or the like can be used. The display 40 of this embodiment also functions as a well-known touch panel using a resistance film method, a capacitance method, or the like, and a function operation unit is provided on the screen.

  FIG. 5 simply shows a side cross-section of the display device 2 of the present invention and shows an example of the configuration. Here, a display using a known 3D display will be described as an example. FIG. 5 is a diagram schematically showing a side cross section of the display device 2. The 3D display uses a lenticular technique that uses parallax, which is a shift when the same thing is viewed from the same place with one eye, and makes a planar printed matter appear to be three-dimensional or moving. First, as shown in FIG. 5, among two different directions, an image 500 that can be viewed from the A direction (second emission direction of the present invention) and an image that can be viewed from the B direction (first emission direction of the present invention). 400 is divided into strips in the horizontal direction of the screen, and alternately combined and recombined into one image is created on the LCD of the display 40.

  Then, the image is displayed through a vertically long lenticular lens sheet (image separation unit) 41 attached to the entire surface of the LCD and having a bowl-like cross section. By adjusting the curvature of the lens of the lenticular lens sheet 41, only the first image 500 can be seen from the A direction (second emission direction) and only the second image 400 can be seen from the B direction (first emission direction). it can. Here, the curvature of the lens is adjusted so that the driver 90 in the driver's seat 103 can directly view the image 400 and the reflecting member 50 can see the reflected image 500 ′ of the image 500.

  In addition, the display 40 employ | adopted by a present Example makes the structure similar to the indicator 10 described in Japanese Patent Application No. 2005-180741. In addition to this method, a method of performing two-screen display by controlling the illumination direction of the backlight corresponding to the viewing angles in the A direction and the B direction may be used. As for the two-screen display, for example, Japanese Patent Laid-Open No. 6-186526 discloses the technology, and in the present invention, any of the two-screen display realized by any of these can be adopted. is there.

  As described above, the display device 2 of the vehicle display device 1 according to the present invention makes it possible to directly view one video (second video) 400 among the different videos visible from different directions, and the other video (second video). (One image) 500 is provided so as to be visible in the form of reflecting the reflection member 50 to the reflection member 50. As shown in FIG. 6, the first image 500 includes a reflection image 500 ′ reflected on the reflection member 50 by the driver because the reflection member 50 is arranged to be inclined downward toward the front side with respect to the driver's line of sight. When viewed, it appears to have an apparent aspect ratio different from the actual aspect ratio on the display 40. That is, as shown in FIG. 7, an image 500 output as a vertical width H on the display 40 has a vertical width H ′ that is compressed in the vertical direction when the driver views through the reflecting member 50. It appears as an image 500 'and is visually recognized by the driver as an apparently horizontally long image. For this reason, in the present invention, the first video 500 is preliminarily expanded in the vertical direction in the image data generation unit 30 (FIG. 3) so as to be visible to the driver close to the actual aspect ratio of the captured video. In addition, the image is inverted upside down in consideration of inversion due to reflection and output on the display 40. In this way, since the reflected image 500 ′ reflected on the reflecting member 50 is compressed in the vertical direction, it is possible to view the rear shot image with a horizontally long size similar to that of a normal inner mirror. In order for the driver to view the reflection image 500 ′ as described above, the installation angle of the reflection member is appropriately set based on the installation angle of the display 40, the installation angle of the reflection member 50, and the viewing angle from the driver. This can be finely adjusted by the connecting portion 60 described above.

  In the present invention, the first video 500 output from the display is a rear shot video shot by the rear shooting CCD camera 11 (FIG. 3), and the rear shot video is displayed on the reflecting member 50 (FIG. 7). reference). The rear shot image is shot by the CCD camera 11 (rear shooting means 201 in FIG. 4) provided on the rear side of the vehicle, so that it cannot be seen when a large load is placed on the rear seat or the like like an inner mirror. There is nothing, and it is possible to always visually confirm the back.

  Further, as the second image 400 that can be directly viewed by the driver 90 from the display 40, the air conditioner operation screen of the air conditioner of FIG. 8 (a), the front shot image of FIG. Driving reference images such as navigation screens can be output. The video output as the second video 400 can be switched by the operation switches 22 to 24, and the output video is determined based on the operation state of the switches 22 to 24. Among these output images, the air conditioner operation screen can be switched between set temperature, air volume, and blowing mode by touching the screen. The set temperature can be raised or lowered by operating the UP and DOWN touch switches. The air volume is repeatedly switched in the order of AUTO, low air volume, medium air volume, high air volume, AUTO,... By pressing a touch switch provided in a predetermined part of the figure. The blowing mode is repeatedly switched in the order of Face, Bi-level, Foot, Foot / Def, Def, Face,... By pressing a touch switch provided at a predetermined portion. When outputting a front shot image, it is possible to simply output an image taken with a CCD camera for front shot, but for example, detecting obstacles (pedestrians, etc.) during running that exist in the shooting screen Thus, the obstacle can be highlighted (for example, reference numeral 43 in FIG. 8B). In this case, it is possible to detect a traveling obstacle early by using this function particularly at night. In this case, it can be realized by mounting a known night vision photographing device (night vision). Note that these second videos may be either still images or moving images.

  As mentioned above, although the Example of this invention was described, these are only illustrations, this invention is not limited to these, A various change is possible unless it deviates from the meaning of a claim. . Hereinafter, the above embodiment will be referred to as a first embodiment, and another embodiment different from the above embodiment will be described.

  9 and 10 show a second embodiment of the present invention. Here, the reflecting member 50a constituting the display device 2a is separated from the display 40a and is provided above the center of the front windshield 102 in the same manner as a normal inner mirror. Visible. In consideration of visibility, it is desirable that the reflecting member 50a be located as far as possible from the driver in the front of the vehicle where the driver can easily see the vehicle. Therefore, the reflection member 50a can be provided below the center of the front windshield 102, and the display 40a can be arranged so that the first image (vehicle rear image) is displayed on the reflection member 50a. Thereby, it becomes difficult to feel a pressure feeling by being close to the reflecting member 50a, and the visibility is improved.

  11 and 12 show a third embodiment of the present invention. Here, the reflecting member 50b constituting the display device 2b is arranged adjacent to either the left or right side edge side (one edge side in the width direction) of the display 40b, and a part of the upper side on the screen of the display 40b. Only the area is used and reflected by the upper area 52 of the reflecting member 50b, and the rear shot image is displayed horizontally. In the case of the figure, the reflecting member 50b is provided on the passenger seat side of the display 40b. At this time, the rear shot image output on the display is output by being reversed left and right. The lower area 53 of the reflecting member 50b may output from the lower area of the display 40b so that the other driving reference image is displayed, or the rear area displayed on the upper area 52 of the reflecting member 50b. In order to further emphasize the captured image, the lower region 53 of the reflection member 50b may be hidden, or the reflection member 50b may be configured by excluding the lower region 53 portion.

  13 and 14 show a fourth embodiment of the present invention. The connecting part 62 is configured to be opened and closed by an opening / closing drive unit such as a motor 61, and the reflecting member 50 can be viewed in a closed position covering the display surface of the display 40 and a reflected image of a rear shot image from the driver's seat. It can be opened and closed between the open position. In this case, for example, when the ignition switch 70 is in the accessory-on position (or the ignition-on position), the reflecting member is moved to the open position, and the reflecting member is moved to the closed position by shifting from the on position to the off position. By operating the opening / closing drive unit in such a manner, it is possible to automatically open / close as described above according to the use / non-use state of the reflection member 50 and the like. A dedicated operation unit (switch) for opening and closing may be provided.

  In the above-described embodiment, the driver can directly view the second image. However, the second image is also reflected by a reflecting member different from the reflecting member used for reflecting the first image, like the first image. It may be configured to be visible to the driver. In addition, when the display is provided to be inclined with respect to the driver's line of sight, the output from the display may be expanded in advance in anticipation that the dimensions appear to be compressed. In addition, the display device of the vehicle display device of the present invention may output at least two or more images so that the driver can visually recognize the image other than the image in which the display can be directly viewed by the reflecting member. Can be configured. In this case, it is possible to adjust the video aspect ratio on the display in anticipation of projection compression due to reflection.

The 1st figure which shows arrangement | positioning of the display apparatus in the 1st Example of the display apparatus for vehicles of this invention. The 2nd figure which shows arrangement | positioning of the display apparatus in the 1st Example of the display apparatus for vehicles of this invention. The block diagram of the 1st Example of the display apparatus for vehicles of this invention. The figure explaining arrangement | positioning of the front-back imaging | photography means in the display apparatus for vehicles of this invention. The 1st figure explaining the display apparatus in the display apparatus for vehicles of this invention. The 2nd figure explaining the display apparatus in the display apparatus for vehicles of this invention. The figure which shows the 2nd image | video projected on the reflection member of this invention. The figure which shows the 1st image | video displayed on the display of this invention. The 1st figure explaining the display apparatus in the 2nd Example of the display apparatus for vehicles of this invention. The 2nd figure explaining the display apparatus in the 2nd Example of the display apparatus for vehicles of this invention. The 1st figure explaining the display apparatus in the 3rd Example of the display apparatus for vehicles of this invention. The 2nd figure explaining the display apparatus in the 3rd Example of the display apparatus for vehicles of this invention. The block diagram of 4th Example of the display apparatus for vehicles of this invention. The figure explaining the display apparatus in 4th Example of the display apparatus for vehicles of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus for vehicles 2, 2a, 2b Display apparatus 3 Control ECU
10 Image capture unit 1
10a, 20a, 30a Frame memory 11 CCD camera for rear photographing 12 Car navigation device 13 Air conditioner device 14 CCD camera for front photographing 20 Image capturing unit 2
22 Navigation image priority switch 23 Air-conditioner image priority switch 24 Front image priority switch 25 Screen OFF switch 30 Image data generation unit 40, 40a, 40b Display (composite display device)
41 Lenticular lens sheet (image separation part)
50, 50a, 50b Reflective member 52 Upper region of reflective member 53 Lower region of reflective member 60, 62 Connecting portion (hinge portion)
61 Motor (open / close drive)
90 Driver 100 Vehicle 101 Handle 102 Front windshield 103 Driver's seat (front seat)
400 Second image 500 First image 500 'Reflected image

Claims (11)

A display for outputting a composite image obtained by superimposing a first image and a second image different from the first image on a common screen area, and a display that is superimposed on the display and included in the composite image A composite comprising a video separation unit that separates and extracts the video information and the second video information into a predetermined first emission direction with respect to the display and a second emission direction different from the first emission direction A display device;
The composite display device has a video input unit that inputs a rear shot video obtained by shooting a rear view of the vehicle as the first video, and inputs a driving reference video different from the rear shot video as the second video. And
A vehicular display device, comprising: a reflection member configured to reflect the rear shot image separated from the composite display device in the first emission direction in a direction visible from the seat.   By matching the viewing direction of the composite display device from the seat with the second emission direction, the driving reference image on the composite display device can be directly viewed from the seat. The vehicle display device according to claim 1, wherein an arrangement direction is determined.   The rear shot image has an apparent aspect ratio different from the actual aspect ratio on the display when viewed as a reflection image from the reflecting member, and the rear shot image is displayed on the display. The vehicle display device according to claim 1 or 2, wherein the display device outputs a size-extended output in a corresponding direction according to a difference ratio between an actual aspect ratio and the apparent aspect ratio.   The rear photographing from the display is arranged such that the reflecting member is disposed adjacent to the upper edge side of the display, and the rear image seen from the seat is reflected horizontally as a reflected image from the reflecting member. The vehicle display device according to claim 3, wherein an image is projected.   The vehicular display device according to claim 4, wherein the rear shot image on the display is output as a reflected image from the reflecting member, extending in a vertical direction from the rear shot image viewed from the seat.   The vehicle display device according to claim 1, wherein the reflection member is disposed adjacent to one edge side in the width direction of the display.   The vehicular display device according to claim 6, wherein the rear shot video is displayed horizontally using only the upper partial area on the screen of the display.   The vehicle display device according to claim 1, wherein a reflection direction of the rear shot image toward the seat of the reflection member is changeable.   The said reflection member is couple | bonded through the hinge part along the edge of the said display of the said composite display apparatus, The attachment angle with respect to the said display of the said reflection member is changeable by this hinge part. Vehicle display device.   The said reflecting member is arrange | positioned so that opening and closing is possible between the closed position which covers the display surface of the said composite display apparatus, and the open position from which the reflected image of the said back picked-up image can be visually recognized from the said seat. The vehicle display device according to claim 9.   The vehicle display device according to claim 10, further comprising: an opening / closing drive unit configured to open / close the reflective member between the closed position and the open position.

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