JPH02193735A - Indicator for vehicle - Google Patents

Abstract

PURPOSE:To form a large display image on a display plate without increasing the width size of a device, by constituting a reflection plate with a curved surface mirror which is curved so that right and left both end portions in comparison with the center portion may come nearer to a display source side. CONSTITUTION:Light projected from a display source 7 is projected on a reflection plate 13 passing through light shielding filters 11, 12, and its reflected light is projected on the display plate 6 of a display panel portion 5, and a display image is projected. A reflection plate 13 is constituted with a curved surface mirror which is curved so that right and left both end portions in comparison with the center portion may come nearer to a display source side 7. Accordingly, the display image reflected on the reflection plate 13 is curved in opposition with the curvature of the reflection plate 13, and becomes a three dimensional virtual image whose image formation position continuously changes so that the right and left both end portions may be located on this side. The width size of its display image projected on the display plate 6 becomes larger than that of a display image formed at the display source 7. Accordingly, a large display image is projected on the display plate without making the width size of the device larger.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a display device for a vehicle that projects and displays a display image formed on a display source onto a display board of a display panel section.

(Prior Art) Conventionally, as shown in Japanese Utility Model Application Publication No. 61-119831, a first reflecting section consisting of a plane mirror disposed in the display section of an instrument, and a display image on the first reflecting section are disclosed. By interposing a second reflecting section between the display source for projecting and displaying the display image, the display image is double reflected.
It is known that the optical path length between the reflective section and the display source is increased so that a display image consisting of a virtual image is projected and displayed at a farther position in the depth direction of the display panel section.

[Problem to be solved by the invention]

In the vehicle display device having the above configuration, since the first reflecting section and the second reflecting section are formed by ordinary plane mirrors, the display image of the display source is projected and displayed on the display panel section in the same size. . Therefore, in a device that projects a display image at a far position in the depth direction of the display panel section as described above, in order to form a large and easy-to-see image on the display panel section, it is necessary to enlarge the display image formed on the display source. However, there is a problem in that the size of the device constituting the display source becomes large.

The present invention has been made in order to solve the above problems, and provides a display device for a vehicle that can form a large, easy-to-see display image on the display panel portion without increasing the dimensions of the device constituting the display source. is intended to provide.

[Means to solve the problem]

The present invention provides a display device for a vehicle in which a display image formed on a display source is projected and displayed on a display board of a display panel section provided on an instrument panel or the like via a reflective plate. At least one of the reflectors,
It is constructed of a curved mirror whose left and right end portions are curved closer to the display source side than the center portion.

[Function] According to the present invention having the above configuration, the horizontal dimension of the display image formed on the display source is expanded by the display board or the reflector of the display panel section, which is composed of a curved mirror whose left and right ends are curved toward the display source side. Therefore, a large and easy-to-see display image can be formed on the display panel without increasing the size of the device constituting the display source.

〔Example〕

FIG. 1 shows an embodiment of a vehicle display device according to the present invention provided on an instrument panel 1 of a vehicle.

A meter hood 4 including an outer hood 2 and an inner hood 3 located below the hood outer 2 is provided at the upper end of the instrument panel 1, and a display panel portion 5 located below the front end of the inner hood 3 is provided. A display board 6 made of a plane mirror is installed. Further, a control unit 8 for controlling a display source 7 provided below the meter hood 4 is attached to the back surface of the display panel 6, that is, the wall surface on the front side of the vehicle body.

The display 11i7 includes a meter display section 9 such as a speedometer, a fuel gauge, and a temperature gauge made of a fluorescent display tube, and various warning display sections 10 made of a warning lamp. The light irradiated from the hood is transmitted through light shielding filters 11 and 12 such as Belchampian blinds, and is projected onto a reflecting plate 13 attached to the lower surface of the hood inner 3. The light reflected by the reflecting plate 13 is projected onto the display board 6 of the display panel unit 5, so that various display images are projected and displayed on the display board 6, as shown in FIG. ing.

As shown in FIG. 3, the reflecting plate 13 is constituted by a curved mirror whose left and right end portions are curved closer to the display source 7 side than the center portion. Therefore, the displayed image a projected on the reflecting plate 13 is a three-dimensional virtual image that is curved in accordance with the curvature of the reflecting plate 13, and the image forming position changes continuously so that both left and right ends are located on the near side. The width dimension of the display image a is larger than the display image formed on the display source 7. Then, the display image a, which is three-dimensionally formed and has an enlarged width, is projected as it is on the display board 6 of the display panel section 5, and is visually recognized by the driver.

In the vehicle display device in which the display image formed on the display source 7 is projected and displayed on the display board 6 of the display panel section 5 via the reflector 13 as described above, the reflector 13 is placed in the center. In comparison, it is constructed of a curved mirror whose left and right ends are curved so as to be close to the display 5!7 side, so that the display image formed on the display source 7 is projected onto the display board 6 in an enlarged width dimension. Because of this, the display is 1t! A large, easy-to-see display image can be formed on the display board 6 of the display panel section 5 without increasing the width dimension of the device constituting the display panel section 7. In addition, the display image projected on the display board 6 is formed by a three-dimensional virtual image whose imaging position changes continuously so that both the left and right ends are located on the front side. At the same time, all the displayed images from the center to both left and right ends can be clearly seen without adjusting the focal length of the eyes when viewing the displayed images.

In the above embodiment, two reflecting mirrors, the display plate 6 and the reflection plate 13, are provided to double reflect the display image of the display source 7 and project it on the display plate 6. By increasing the optical path length with respect to the source 7, a display image can be projected at a far position in the depth direction of the display panel section 5. Therefore, there is an advantage that the focus adjustment operation of the eyes can be performed easily and quickly when the driver's viewpoint is shifted from the outside front to the display panel section 5. Roughly, the display image that has been horizontally reversed once on the reflecting plate 13 is further horizontally reversed on the display board 6, so that the display image 7 is not formed into a horizontally reversed character, but is displayed as an erect image on the display board 6. can be displayed.

Further, in the above embodiment, as shown in FIG. 1, the light-shielding filter 11 located above the meter display section 9 is installed with the front portion inclined.

There is an advantage that disturbance light incident from the rear of the meter hood section 4 is suppressed from being projected onto the surface of the light-shielding filter 11, and it is possible to effectively prevent the contrast of the displayed image from deteriorating. Furthermore, a warning display section 10 is installed using the space formed by tilting the light shielding filter 11, and the rear part of the meter display section 9 and the front part of the warning display section 10 are overlapped. Since both display portions 9 and 10 can be disposed, the front and rear dimensions of the device constituting the display source 7 can be reduced.

In the above embodiment, the display board 6 of the display panel section 5 is made up of a plane mirror, and the reflection plate 13 is made up of a curved mirror, but both the display board 6 and the reflection plate 13 are made of a curved mirror, Alternatively, only the display board 6 may be formed of a curved mirror.

However, when the display board 6 is constructed of a curved mirror, the display image formed on the display board 6 is likely to be distorted due to the distortion of the display board 6.
It is preferable that only one part be constructed by a curved mirror.

Further, in the above embodiment, the reflecting plate 13 is constituted by a curved mirror whose surface is curved only in the left-right direction, but instead of this, the front-back and left-right ends of the surface are each more visible than the center. A so-called concave mirror curved so as to be close to the source 7 side may be used. In this case, both the vertical and horizontal dimensions of the display image formed on the display source 7 can be enlarged and displayed on the display board 6 of the display panel section 5 due to the image magnification effect of the concave mirror. , since a virtual image can be formed further into the back of the display panel section 5, there is an advantage that a more easily viewable display image can be formed.

〔Effect of the invention〕

As explained above, in the vehicle display device according to the present invention, at least one of the display board of the display panel section or the reflector that reflects the display image of the display source toward the display board is arranged at both the left and right ends of the display panel, compared to the center part. Since the mirror is formed of a curved mirror whose portion is curved so as to be close to the display source side, the display image formed on the display source is projected onto the display board in an enlarged width dimension. Therefore, by increasing the optical path length between the display source and the display board by providing the above-mentioned reflector,
In a vehicle display device in which a display image is projected at a far position in the depth direction of a display panel part, it is possible to form a large and easy-to-see display image on a display board without increasing the width dimension of a device constituting a display source. It has the advantage of being possible.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of a vehicle display device according to the present invention, FIG. 2 is an If-It contraction view of FIG. 1, and FIG. 3 is an explanatory diagram showing an image forming state on a reflector. It is. DESCRIPTION OF SYMBOLS 1... Instrument panel, 5... Display panel part, 6... Display board, 7... Display source.

Claims (1)

[Claims] 1. A display device for a vehicle in which a display image formed on a display source is projected and displayed on a display board of a display panel section provided on an instrument panel or the like via a reflective plate,
A display device for a vehicle, characterized in that at least one of the display plate and the reflection plate is constituted by a curved mirror whose left and right end portions are curved so that they are closer to the display source side than the center portion.