JP2007057361A - Display device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device for a vehicle capable of achieving a stereoscopic and deep display without depending on a complicated graphic image by arranging a half mirror and a display along a numerical scale set in the curved state. <P>SOLUTION: This device is equipped with: a panel display 2 arranged in a meter case 1, for displaying the numerical scale; the display 4 for displaying a changed value of vehicle information on the display by moving it in a prescribed direction; and the half mirror 5 arranged on the surface of the panel display 2, for transmitting information on the panel display 2 and reflecting the changed value on the display 4. The device has a constitution wherein the numerical scale on the panel display 2 is displayed by a curve, and the half mirror 5 is arranged along the curve, and the changed value on the display 4 is reflected on the half mirror 5, and the stereoscopic display is achieved by overlapping a virtual image on the display 4 reflected by the half mirror 5 on a real image on the panel display 2. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a vehicle display device that is disposed in front of a driver's seat of a vehicle and displays a traveling speed and an engine speed of the vehicle.

Vehicles such as passenger cars are provided with a vehicle display device that displays information such as travel speed and engine speed. This vehicle display device has been used for a long time since mechanical analog display has been adopted. In recent years, however, mainly display devices such as LCD and VFD are combined with mirrors or half mirrors to improve visibility and display quality. Have been proposed.
These display effects are obtained by displaying one of the two display devices as a real image by the transmitted light of the half mirror and the other as a virtual image by the reflected light of the half mirror and superimposing them.
A technique described in Japanese Patent Application Laid-Open No. 9-66758 is known as a technique related to such a display device for a vehicle.
Japanese Patent Laid-Open No. 9-66758

However, in a panel display such as a liquid crystal display, a graphics image is expressed as a collection of points. If the resolution per unit area is low, a stepped jagged (jaggy) appears on an oblique line.
In order to make this jaggy inconspicuous, it is possible to mount a high-performance graphic accelerator, but there is a problem that the amount of data increases because a complicated program must be set. Further, when the graphic accelerator is not installed, it is necessary to previously store all rotation angle graphic data of the anti-aliasing-treated pointer as graphic data, which also causes a problem that the data amount increases.
Further, in the conventional method in which the pointer is expressed on the same plane as the dial, a display with a three-dimensional impact cannot be obtained.
The present invention has been made to solve such a conventional problem, and the object of the present invention is to arrange a half mirror and a display along a numerical scale set in a curvilinear manner. There is a need to provide a vehicle display device that realizes a three-dimensional and deep display without depending on a graphic image.

  As means for achieving the above object, in the present invention, a display panel arranged in a meter case in front of the vehicle driver's seat and displaying a numerical scale, and a change value of vehicle information on the display are translated in a predetermined direction. And a half mirror that is arranged on the surface of the display panel and transmits information on the display panel and reflects a change value on the display, and the numerical scale of the display panel is displayed with a curve. A half mirror is arranged along the curve, the change value on the display is projected on the half mirror, and the virtual image on the display reflected by the half mirror is superimposed on the real image on the display panel to create a three-dimensional image. It is characteristically displayed.

In the present invention, a display panel arranged in a meter case in front of the driver's seat and displaying a numerical scale, and arranged on the surface of the display panel to transmit information on the display panel and change values on the display The display panel and the change value on the display can be superimposed and displayed three-dimensionally.
Further, the numerical scale of the display panel is displayed with a curve, and the half mirror is arranged along the curve. Therefore, even if it is a curved scale display, a corresponding three-dimensional display is possible.
Furthermore, since a display for displaying the change value of the vehicle information by translating in a predetermined direction is adopted, the change value is displayed by the movement of the display band on the display, and there is no need to set a complicated graphic image. The display load can be reduced, and a simple and reliable display structure can be realized.

  Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic front view of the vehicular cooling apparatus according to the first embodiment.
First, the overall configuration of the first embodiment of the present invention will be described.
As shown in FIGS. 1 and 2, the vehicle display device of the present invention includes a meter case 1 disposed in front of the driver's seat, a panel display 2 housed in the meter case 1, and the panel display 2. The drum 3 disposed in the front, the display 4 disposed on the outer periphery of the drum 3, and the half mirror 5 disposed along the outer edge of the display 4 are main components.

  The meter case 1 is integrally disposed on an instrument panel that extends in front of a driver's seat in a vehicle, and accommodates each component attached to the meter body.

The said panel display 2 comprises a display panel, and is arrange | positioned facing the driver's seat front. In this embodiment, an LCD display is employed, and a speed scale or an engine speed scale is displayed on the panel display by liquid crystal display.
In the present embodiment, the speed scale is displayed on the panel display 2 in a circular shape. The circular display is the same as that employed in the conventional mechanical analog display. In the present invention, the speed change value is displayed on the half mirror 5 along the circular display.
Items such as an oil warning 6, an engine warning 7, a battery warning 8, and a side brake warning 9 are set in the central portion of the panel display 2. The panel display 2 has a fuel display section for displaying the remaining amount of fuel such as gasoline, a speed display section for displaying the traveling speed of the vehicle, a shift position display section for displaying the shift position of the automatic vehicle, and the engine speed. A rotation speed display section for displaying and a water temperature display section for displaying the temperature of cooling water for cooling the engine are set as necessary.

  A hollow cylinder (drum 3) is arranged on the front side of the panel display 2. The drum 3 is supported by the stand 10 and is disposed at the center portion of the panel display 2. Since the drum 3 is disposed with the hollow portion facing forward and backward, warnings 6 to 9 displayed on the panel display 2 behind the hollow portion can be confirmed from the driver's seat.

A thin film-like display 4 is pasted on the outer periphery of the drum 3 over the length of the upper 3/4. This display 4 is obtained by attaching a band-shaped organic EL display to the outer periphery of a drum so as to be circularly curved.
This organic EL display emits light and colors depending on the setting when a voltage is applied, and can obtain high brightness with low power, and is excellent in terms of visibility, response speed, life, and power consumption. Thus, it is possible to reduce the thickness and form a curved surface relatively easily.
On the display 4, continuous setting is performed in a state where light emission bands are stacked in the length direction. Based on the signal from the vehicle speed sensor, a specific band (hand 11) on the display emits light and displays the current speed.
That is, when the speed is slow, the band in the lower left part of FIG. 1 emits light, and the band moves from the upper direction to the right direction as the speed increases. When viewed on the display, the light emission band shifts in parallel, and the speed is displayed by the transition position.
This light emission band is reflected by a half mirror 5 described later and is recognized as a virtual image in the driver's seat.
As described above, in the present invention, the band (pointer 11) having the same shape is set adjacent to the display 4 and the pointer 11 is moved in parallel according to the speed. Therefore, it is necessary to set a complicated graphic image on the display. No simple and reliable display is realized.

A half mirror 5 is arranged on the outer edge of the drum 3 so as to surround the drum.
The half mirror 5 has a shape in which a cone is cut into a circle with a width in the horizontal direction, and a lower quarter of the ring is cut out. The half mirror 5 is arranged over the length of the upper 3/4 of the outer periphery of the drum so as to surround the outer periphery of the display 4.
Further, the half mirror 5 is arranged on the outer periphery of the display 4 so as to open a trumpet with a slight gap to form a collar so as to reflect the display 4 on the driver's seat side.
Thereby, the light emission band of the display 4 is reflected to the driver's seat by the half mirror 5.
The half mirror 5 transmits the display on the panel display 2 and transmits it to the driver's seat, and reflects the display 4 on the front driver side.

FIG. 3 is a block diagram of the vehicle display device.
The organic EL display display unit 12 is a display unit that reflects the display of the organic EL display 4 on the half mirror 5 and transmits it to the driver's seat as a virtual image.
Based on information input from the vehicle interface 15, the CPU 14 determines display contents on the organic display 4 and transmits data to the LCD display display unit 13. Further, the CPU 14 controls the backlight 16 of the LCD 2.
The graphic circuit 17 generates image data according to the determined display content.
The organic display 4 displays an image corresponding to the image data on the display surface.
The communication interface 18 communicates with the LCD display display unit 13.

The LCD display display unit 13 is a display unit that displays a scale, a warning, or the like on the display panel.
The CPU 19 determines display contents on the LCD 2 based on information input from the communication interface 20.
The graphic circuit 21 generates image data according to the determined display content.
The LCD 2 displays an image corresponding to the image data on the display surface.
The backlight 16 projects light from the back surface of the LCD 2 so that the image has sufficient luminance.

Next, the operation will be described.
The vehicle speed is detected by a vehicle speed sensor, and the detection signal is transmitted to the CPU 14 of the vehicle display device. Based on this signal, the CPU 14 emits a specific band (the pointer 11) on the display 4 corresponding to the vehicle speed.
This light emission band is reflected to the driver's seat by the half mirror 5. The half mirror 5 transmits the display on the rear panel display 2 and superimposes the light emission band as a virtual image and displays it on the driver's seat.
In the driver's seat, a band is three-dimensionally superimposed and recognized on a display panel that passes through the half mirror.
On the display 4, the light emission position of the band changes according to the speed, but since it is not a complicated graphic image change, the display load of the CPU is small.
Further, since the half mirror 5 is arranged along a curved scale display, the display on the display is clearly reflected and displayed.

Next, the effect will be described.
In the present embodiment, a panel display 2 disposed in a meter case in front of the driver's seat and displaying a numerical scale, and disposed on the surface of the panel display 2 to transmit information on the panel display 2 and display 4 is provided with the half mirror 5 that reflects the change value on the display 4, the change value on the display 4 can be superimposed on the scale on the panel display 2 and displayed three-dimensionally.
Further, the numerical scale of the panel display 2 is displayed in a circular shape, and the half mirror 5 is arranged along the circular curve, so that a three-dimensional display corresponding to the circular scale is possible.
Furthermore, since the change value of the vehicle information is displayed by causing a specific band (hand 11) to emit light, there is no need to set a complicated graphic image, the display load of the CPU 14 can be reduced, and simple and reliable display. A structure is realized.

Although the present embodiment has been described above, the present invention is not limited to the above-described embodiment, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, in the above embodiment, a specific light emitting hand is configured to emit light, but the same action and effect can be obtained even when light is emitted entirely below a specific light emission band.
In the above embodiment, the scale of the panel display 2 is a circular display. However, the scale is not limited to a circle and can be set with other curves.

It is a front view of the display apparatus for vehicles. It is AA sectional drawing. It is a block diagram which shows the structure of the display apparatus for vehicles.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Meter case 2 Panel display 3 Drum 4 Display 5 Half mirror 6 Oil warning 7 Engine warning 8 Battery warning 9 Side brake warning 10 Stand 11 Pointer 12 Organic EL display display part 13 LCD display display part 14 CPU
15 Vehicle Interface 16 Backlight 17 Graphic Circuit 18 Communication Interface 19 CPU
20 Communication interface 21 Graphic circuit

Claims (1)

A display panel arranged in a meter case in front of the driver's seat and displaying a numerical scale;
A display for displaying the vehicle information change value on the display by translating in a predetermined direction;
A half mirror that is disposed on the surface of the display panel and transmits information on the display panel and reflects a change value on the display,
The numerical scale of the display panel is displayed with a curve, a half mirror is arranged along the curve, the change value on the display is projected on the half mirror, and it is reflected by the half mirror on the real image on the display panel. A vehicle display device configured to display a three-dimensional image by superimposing virtual images on a display.

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