JP2941434B2 - Display unit - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a display unit, in particular for use in motor vehicles, comprising a display plane oriented at a defined observer position and having a first display element, and a second display. And a display of the second display element, wherein a display of the second display element is disposed between the observer and the display plane and is inclined at a predetermined angle with respect to the observer's gaze direction. It is of the type that is able to reflect towards the observer through a screen.

[0002]

2. Description of the Related Art In a display unit of this type, it is possible, if necessary, to mirror the additional display so that it is visible to the observer in the area of the display plane. In this way, the space problem for housing the display elements in the area behind the display plane can be largely avoided.

However, in this known display unit, a part of the radiation of the display of the second display element impinging on the transparent screen penetrates into the screen or is completely transmitted through the screen. There is inconvenience. This means, firstly, that besides the primary specular reflection at the limiting surface of the screen in front of the observer, the secondary specular reflection at the limiting surface of the screen farther to the observer, i.e. It produces an image.

[0004] Second, radiation impinging on the display plane causes inconvenient images of the first display element.

[0005]

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a display unit of the type mentioned at the outset, which improves the display unit in such a way that all the display elements are operated in a convenient manner. is there.

[0006]

In order to solve this problem, according to the structure of the present invention, a transparent screen is provided with a large number of laminates having a small thickness and being parallel to each other, and the longitudinal length of the laminate is determined. The extension in the direction extends substantially transversely to the gaze direction of the observer, and the width extension of the laminate extends substantially in the gaze direction of the observer.

[0007]

According to the present invention, the observer can actually observe the display of the first display element with the laminated plate without any inconvenience, and the transmission component of the display, which is mirror-imaged on the screen, is the above-mentioned. It is at least sufficiently absorbed by the laminate. With respect to the display of the second display element visible on the screen, only the components reflected on the limiting surface on the near side of the screen will be visible to the observer.

To make the display sufficiently detectable over a larger width extension, it is advantageous if the longitudinal extension of the laminate is oriented substantially horizontally.

If the width of the laminate corresponds approximately to the distance between the two limiting surfaces of the screen when viewed in the viewing direction of the observer,
Transmission that reaches the display plane can be sufficiently prevented.

When the radiation of the display of the second display element impinges on the transparent screen at an angle such that the ray component transmitted through the screen impinges on the laminate surface, the transmission of the radiation of the second display on the display plane is achieved. Collisions are completely prevented.

In order to completely absorb the radiation impinging on the laminate, it is advantageous if the laminate is designed to be light absorbing.

[0012] The screen may be made of a rigid material or of a transparent film.
The transparent film allows for easier processing and assembly of the screen.

Since the motor vehicle is usually already provided with a hood, the second display element is arranged in the hood for shielding light rays incident on the display plane from above without significant additional space requirements. Good.

The second display element may be a warning light or a display displaying a variable display, in particular a transmissive liquid crystal display.

[0015] Advantageously, the first display element is a dashboard display instrument, in which case the display element may also be a liquid crystal display.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The display unit shown in FIGS. 1 and 2 has a casing 2 which is open towards a viewer 1 and which is integrated into the dashboard of a motor vehicle. In the area of the bottom 3 of the casing 2, an instrument forming a first display element 4 is arranged, the display plane 5 of which is facing the observer 1.

Behind the display plane 5 there are two light sources 6 to illuminate the first display element 4.
Is arranged.

A flat screen 7 is arranged between the display plane 5 and the observer 1 at an angle of 30 °. In this case, the upper edge of the screen 7 extends close to and parallel to the display plane 5, while the lower edge of the screen 7 is at a greater distance from the display plane 5. Is located.

On the side of the screen 7 remote from the display plane, the housing opening 8 in the upper casing wall 9
Two illuminable second display elements 1
0 is arranged, in which case the upper casing wall 9 is covered by a hood 11.

The radiation display of the second display element 10 impinges on the screen 7 at an angle of incidence α such that the reflection of the radiation display on the front limiting surface 12 of the screen 7 is directed towards the observer 1. Said reflection is caused by a second display element 10 on a predetermined plane, i.e. on the side of the screen 7 opposite the viewer 1.
Is recognized as a virtual image by the observer 1 in a plane where the distance from the position of the screen 7 where the radiation of the display collides corresponds to the distance from the position to each second display element 10.

On the transparent screen 7, a large number of laminated plates 13 having a small thickness and extending parallel to each other at small intervals are arranged. The longitudinal direction of the laminated plate 13 extends horizontally and horizontally with respect to the viewing direction 14 of the observer 1. Laminated board 1
The width 3 extends from the front restriction surface 12 of the screen 7 to the rear restriction surface 15 along the viewing direction 14. Therefore, the visibility of the display plane 5 to the observer 1 is not hindered by the laminate 13. This is clearly seen in FIG.

Further, in FIG. 3, some components of the radiation impinging on the screen 7 are not reflected by the restricting surface 12 toward the observer 1 but enter the screen and
It is recognized that there is a collision. The light-absorbing laminate 13 prevents the radiation component from reaching the rear limiting surface 15 and being reflected back there.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a display unit according to the present invention used in an automobile.

FIG. 2 is a cross-sectional view showing an optical path in the display unit shown in FIG.

FIG. 3 is an enlarged cross-sectional view showing a part of the screen shown in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Observer 2 Casing 3 Bottom part 4 Display element 5 Display plane 6 Light source 7 Screen 8 Housing opening 9 Casing wall 10 Display element 11 Hood 12 Restricted surface 13 Laminated plate 14 Viewing direction 15 Restricted surface α angle

──────────────────────────────────────────────────続 き Continuation of the front page (73) Patent holder 390009416 Kruppstrabe 105, Franckfurt Main, BRD (58) Fields investigated (Int. Cl. ⁶ , DB name) B60K 35/00

Claims (12)

(57) [Claims] 1. A display unit, comprising: a display plane oriented at a predetermined viewing position and having a first display element; and a second display element, wherein the second display element is provided. The display of the display element is reflective between the observer and the display plane and can be reflected toward the observer via a transparent screen which is inclined at a predetermined angle with respect to the observer's gaze direction. In one type, a transparent screen (7) is provided with a number of parallel laminates (13) of small thickness, the longitudinal extension of which is determined by the observer (1). A display unit extending transversely to the direction (14), wherein the width extension of the laminate extends substantially in the viewing direction of the observer (1). G. 2. The display unit according to claim 1, wherein the longitudinal extension of the laminate is oriented substantially horizontally. 3. The width of the laminate (13) substantially corresponds to the distance between the two limiting surfaces (12, 15) of the screen (7) viewed in the viewing direction (14) of the observer (1). , Claim 1
Or the display unit according to 2. 4. The display device of claim 2, wherein the display radiation of the second display element impinges on the transparent screen (7) at an angle (α) such that the ray component transmitted through the screen (7) impinges on the surface of the laminate. Claim 1
The display unit according to any one of claims 1 to 3. 5. The display unit according to claim 1, wherein the laminate is configured to be light absorbing. 6. The display unit according to claim 1, wherein the screen is a transparent film. 7. A second display element (10).
7. The display unit according to claim 1, wherein the display unit is arranged on a hood (11) that blocks light incident on the display plane (5) from above. 8. A second display element (10).
The display unit according to any one of claims 1 to 7, wherein is a warning light. 9. The display unit according to claim 1, wherein the second display element is a variable display. 10. The display unit according to claim 1, wherein the second display element is a transmissive liquid crystal display. 11. A first display element (4).
Is a dashboard display instrument.
11. The display unit according to any one of items 1 to 10. 12. The display unit according to claim 1, wherein the first display element is a liquid crystal display.