JP2007320509A - Display unit for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display unit for a vehicle capable of eliminating waste of display and improving reduction of electric power consumption and visibility of the display to a driver. <P>SOLUTION: This display unit for the vehicle to display a display part 6b to show to the side of a driver's seat and a display part 6a to show to the side of an assistant driver's seat in dual view by dividing a field of view by a parallax barrier 22 by interlacing it by one LCD 21 is furnished with an occupant detection sensor to detect existence of an occupant at the assistant driver's seat and a control part 1 to put off the second display when there is no occupant at the assistant driver's seat. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention belongs to the technical field of a vehicular display device that displays an image in which a display image viewed from the driver's seat side is different from a display image viewed from the passenger seat side, or a dual view that is a video.

Conventionally, the first image along the first direction is displayed, and the second image along the second direction different from the first direction is displayed. It is adapted to display the first image and the second image so that the angle range of the second image differs from the angle range of the second image, navigation from the driver's seat side, TV, DVD, etc. video from the passenger seat (See, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2005-78076 (page 2-26, all figures)

  However, in the past, even when no passenger is in the passenger seat, a display that can be seen from the passenger seat is performed, which is useless.

  The present invention has been made paying attention to the above-mentioned problems, and the object of the present invention is for a vehicle capable of eliminating wasteful display, reducing power consumption and improving display visibility to a driver. It is to provide a display device.

  In order to achieve the above object, in the present invention, in a vehicle display device that displays a first display to be displayed on the driver's seat side and a second display to be viewed on the passenger seat side in a dual view performed on one display screen, An occupant detection means for detecting the presence or absence of a passenger in the passenger seat and a control means for turning off the second display when there is no passenger in the passenger seat are provided.

  Therefore, in the present invention, display waste can be eliminated, power consumption can be reduced, and display visibility to the driver can be improved.

  Hereinafter, an embodiment for realizing a vehicle display device of the present invention will be described based on Example 1 corresponding to the invention according to claim 1.

First, the configuration will be described.
FIG. 1 is a block diagram illustrating a main configuration of the vehicle display device according to the first embodiment.
The vehicle display device according to the first embodiment includes a control unit 1, a dual display 2, and an occupant detection sensor 5 as main components, and is connected to a navigation device 3 and a media playback device 4 provided in the vehicle.

  The control unit 1 is a control circuit including a microcomputer, and includes a CPU, a RAM, a ROM, and the like (not shown), and a VRAM 11 that temporarily stores image data for display. The control unit 1 performs input processing from the navigation device 3, media playback device 4, and occupant detection sensor 5, image processing, output to the dual display 2, and control processing.

The dual display 2 includes an LCD 21, a backlight 211, and a parallax barrier 22, and simultaneously displays different contents on the driver seat side and on the passenger seat side.
The LCD 21 is a liquid crystal display unit and displays image data in the VRAM 11 of the control unit 1.
The backlight 211 irradiates the LCD 21 with light from the back surface to give brightness to the display.

As will be described later, the parallax barrier 22 divides the display viewed from the driver seat side and the view viewed from the passenger seat side, and the function thereof will be described later.
The parallax barrier 22 may optically divide the field of view or mechanically divide the field of view.

The navigation device 3 displays the vehicle position on the map and guides to the destination from the built-in map data and the position of the vehicle detected by GPS or the like. Further, the display image of the navigation device 3 is output to the dual display 2 via the control unit 1.
The media playback device 4 is a device that plays back media such as a DVD in which video and the like are stored. The played back video is output to the dual display 2 via the control unit 1.

The occupant detection sensor 5 detects the presence or absence of a passenger in the passenger seat and outputs the detection result to the control unit 1.
The occupant detection sensor 5 includes one that detects the load and pressure of the occupant on the passenger seat, and one that detects from the heat, images, and the like.

Next, the operation will be described.
[Dual display effect]
An outline of the display operation in the dual display in the vehicle display device of the first embodiment will be described.
FIG. 2 is an explanatory diagram illustrating a display state of the vehicle display device according to the first embodiment.
In the vehicular display device of the first embodiment, the LCD 21 displays an image by alternately dividing the display portion 21b on the driver's seat side and the display portion 21a on the passenger seat side by an interlace method. That is, when a large number of display portions 21b are combined, a navigation image is obtained.

  When the parallax barrier 22 is arranged with a slight gap from the LCD 21, the large angle 6a on the front side from the part where the field of view of the parallax barrier 22 is opened as shown in FIG. 2 becomes the field of view for the passenger seat. As shown in FIG. 3, the view from the driver's seat is obtained at a small angle 6b.

As described above, the parallax barrier 22 obtains a navigation display from the driver's seat side by arranging a large number of interlaced display portions of the LCD 21 visible in the field of view 6b.
Further, from the passenger seat side, display of images such as a DVD can be obtained by arranging a large number of interlaced display portions of the LCD 21 visible in the field of view 6a.
In this case, the sound may be navigation only when necessary, and the DVD video may be always on.

[Occupant detection processing]
FIG. 3 is a flowchart showing the flow of an occupant detection process executed by the control unit of the vehicle display device according to the first embodiment. Each step will be described below.

  In step S1, processing is started.

  In step S2, it is determined from the detection result of the occupant detection sensor 5 whether there is no passenger in the passenger seat. If there is no passenger in the passenger seat, the process proceeds to step S3. If there is a passenger in the passenger seat, the process proceeds to step S2. Return.

  In step S3, a process for erasing the display visible from the passenger seat is performed, and the process returns to step S2.

[Action to detect passengers and turn off display]
In the vehicle display device of the first embodiment, when it is determined that there is no passenger in the passenger seat by the passenger detection sensor 5 (step S2), the display visible from the passenger seat is turned off (step S3). That is, a large number of alternating strip-like display portions 21a in the interlace described in FIG. 2 are turned off.

  In this way, if the passenger seat is not occupied, turning off the display on the passenger seat can greatly reduce power consumption and continue to display the necessary driver seat. .

Next, the effect will be described.
In the vehicle display device according to the first embodiment, the effects listed below can be obtained.

  (1) In a vehicle display device in which a display portion 6b to be shown to the driver's seat side and a display portion 6a to be shown to the passenger seat side are interlaced on one LCD 21 and the view is divided by the parallax barrier 22 and displayed in a dual view. Since the occupant detection sensor 5 for detecting the presence or absence of a passenger in the passenger seat and the control unit 1 for turning off the second display when there is no passenger in the passenger seat, the display is not wasted and power consumption can be reduced. it can.

  Since this reduction in power consumption is performed by control, it can be handled without the driver's awareness, and is advantageous in that it can be done without increasing the operating load on the driver.

  The vehicle display device according to the second embodiment is an example in which navigation display to the driver's seat is performed when there is no passenger in the passenger seat.

Although the configuration is the same as that of the first embodiment, the parallax barrier 22 has a function capable of canceling the field-of-view restriction described with reference to FIG. The release of the field of view may be optical or mechanical. Further, the parallax barrier 22 may be moved from the display front of the LCD 21.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.

The operation will be described.
[Occupant detection processing]
FIG. 4 is a flowchart showing the flow of an occupant detection process executed by the control unit of the vehicle display device according to the second embodiment. Each step will be described below.

  In step S4, the process is started.

  In step S5, it is determined from the detection result of the occupant detection sensor 5 whether there is no passenger in the passenger seat. If there is no passenger in the passenger seat, the process proceeds to step S6. If there is a passenger in the passenger seat, the process proceeds to step S5. Return.

  In step S6, processing for invalidating the parallax barrier 22 is performed, and the process returns to step S5.

[Action to change display by occupant detection]
In the vehicle display device according to the second embodiment, when it is determined that there is no passenger in the passenger seat by the occupant detection sensor 5 (step S5), the parallax barrier 22 is invalidated and navigation is displayed (step S6). That is, the interlaced display described with reference to FIG. 2 is canceled, and the LCD 21 displays the navigation device 3 on the entire surface (display portion 6a + display portion 6b).

  Accordingly, a larger, more precise, and brighter display can be performed when no passenger is present in the passenger seat, and the visibility of the navigation display can be improved.

Next, the effect will be described.
In the vehicle display device according to the second embodiment, the following effects can be obtained.

  (2) In a vehicle display device in which a display portion 6b to be shown to the driver's seat side and a display portion 6a to be shown to the passenger seat side are interlaced on one LCD 21 and the view is divided by the parallax barrier 22 and displayed in a dual view. When there is no passenger in the passenger seat and the passenger detection sensor 5 for detecting the presence or absence of the passenger in the passenger seat, the parallax barrier 22 does not separate the field of view and the display portion 6b is displayed on the entire display screen. Since the control unit 1 is provided, the visibility of the driver's navigation can be improved.

  As mentioned above, although the display apparatus for vehicles of this invention has been demonstrated based on Example 1 and Example 2, it is not restricted to these Examples about concrete structure, Each claim of a claim Design changes and additions are permitted without departing from the spirit of the invention.

  For example, in the first and second embodiments, the interlaced band-like alternate display portions and the parallax barrier that can be seen through the belt are configured. It may be a configuration.

It is a block diagram which shows the main structures of the display apparatus for vehicles of Example 1. FIG. It is explanatory drawing which shows the display state of the display apparatus for vehicles of Example 1. FIG. 3 is a flowchart illustrating a flow of occupant detection processing executed by a control unit of the vehicle display device according to the first embodiment. It is a flowchart which shows the flow of the passenger | crew detection process performed by the control part of the display apparatus for vehicles of Example 2. FIG.

Explanation of symbols

1 Control unit 11 VRAM
2 Dual display 21 LCD
21a Display portion 21b (to the passenger's seat side) Display portion 211b (to the driver's seat side) 211 Backlight 22 Parallax barrier 3 Navigation device 4 Media playback device 5 Occupant detection sensor 6a Passenger seat side viewing angle 6b Driver seat side viewing angle

Claims (2)

In the vehicle display device that displays a first display to be displayed on the driver's seat side and a second display to be displayed on the passenger seat side in a dual view performed on one display screen,
Occupant detection means for detecting the presence or absence of a passenger in the passenger seat;
Control means for turning off the second display when there is no passenger in the passenger seat;
A vehicle display device comprising: In a vehicle display device that performs a first display to be displayed on the driver's seat side and a second display to be displayed on the passenger seat side on a single display screen, and separates the field of view with a field of view barrier and displays in a dual view.
Occupant detection means for detecting the presence or absence of a passenger in the passenger seat;
Control means for preventing a view from being divided by the view barrier and performing a first display on the entire display screen when there is no passenger in the passenger seat;
A vehicle display device comprising:

Images