JPH0710939Y2 - Vehicle display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vehicle display device, and more particularly to a vehicle display device for displaying various vehicle information by means of a display incorporated in a vehicle instrument panel.

[Prior Art] A vehicle instrument panel is provided with a display device for allowing a driver to recognize information such as a vehicle speed, a vehicle mileage, a remaining amount of fuel, an engine speed, and the like. A fluorescent display tube display system, a light emitting diode display system, a transmissive liquid crystal display system and the like are adopted.

Recently, unlike such ordinary devices, main meter display images have been provided at the conventional meter display positions in consideration of design, visibility, and expansion space due to diversification of display devices. An apparatus has been proposed in which projection display is performed on a reflective plate and stereoscopic display is performed. According to such a display device, for example, a half mirror is used as a reflection plate, and light emitted from a fluorescent display tube or the like is reflected by the half mirror and floats on the back side of the half mirror and can be viewed three-dimensionally.

Japanese Utility Model Laid-Open No. 60-99131 discloses a conventional example of such a stereoscopic meter display device. According to this conventional example, as shown in FIG.
The reflector plate 12 is arranged at an angle of a predetermined angle with respect to the first indicator 10 arranged in 200, and the light emitter 14 for giving the second meter display to the reflector plate 12, In 12, a transparent substrate 16 is provided with an optical interference film 18 on its surface.

Then, the optical interference film 18 makes the reflection spectrum of the reflection plate 12 approximate to the emission spectrum from the light emitter 14 to increase the reflectance at a specific wavelength, thereby making the image 14a appear to float. On the other hand, the reflection plate 12 prevents the light from the first display device 10 from being reflected and allows it to be transmitted as it is for clear display.

[Problems to be Solved by the Invention] Conventional Problems However, according to the above-mentioned conventional technology, as shown in FIG. 5, the light emitted from the light emitting body 14 has a specific wavelength due to the optical interference film 18 of the reflection plate 12. Is reflected, but on the other hand, the optical interference film
The light transmitted through 18 is reflected on the back surface of the transparent substrate 16 to cause a so-called double image. Therefore, the visibility is poor and it is difficult to instantly read the displayed contents.

DISCLOSURE OF THE INVENTION The present invention has been made to solve the above problems, and an object thereof is to provide a vehicular display device capable of preventing a double image from being generated and obtaining a clear display.

[Means and Actions for Solving Problems] In order to achieve the above object, the present invention provides a vehicle display device for displaying various vehicle information by a display incorporated in a vehicle instrument panel. The panel includes a filter plate inclined by a predetermined angle with respect to a first display provided on the panel, and a second display providing a second meter display to the filter plate via a reflection plate. The filter plate is made of a smoke-treated transparent plate.

With the above-described structure of the present invention, the driver can directly see the real image by the light from the first display through the filter plate, and the display image from the second display can be viewed by the reflection plate. It can be visually recognized by the virtual image projected on the filter plate through.

Here, most of the light projected on the filter plate is reflected on the surface of the filter plate, and part of it is reflected on the back surface of the filter plate. Therefore, strictly speaking, a double image is formed, but the filter plate is smoked and its transmittance is extremely low. For this reason, the light reflected on the back surface of the filter plate passes through the filter plate having a low transmissivity twice, and a clear image can be obtained with almost no visible light.

[Embodiment] A preferred embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic side sectional view of a vehicle display device according to the present invention.

In the figure, an instrument panel 20 provided at the front of the vehicle compartment includes a meter display section 22 and a meter hood 24, and the meter display section 22 displays predetermined vehicle information such as vehicle speed and mileage.

Here, the characteristic of the present invention is that the first display provided on the instrument panel is arranged at a predetermined angle with respect to the first display, and the second display is provided on the filter through the reflection plate. And a second indicator for giving a meter display, wherein the filter plate is a smoke-treated transparent plate.

In the present embodiment, the meter display unit 22 has a first display 26.
And the second display 28 are arranged in parallel on the same plane. Further, the filter plate 30 is inclined and arranged at a predetermined interval in front of the first display 26 (driver's side) so that only the light from the first display 26 is transmitted. The filter plate 30 is made of a smoke acrylic plate mixed with a dark semi-transparent color, and its optical characteristics have a reflectance of about 5% in the light of wavelength 400 to 800 nm as shown in FIG. It has characteristics of low reflectance and low transmittance with a transmittance of 4%. And the driver sees the real image from the first display 26
26a can be directly viewed through this filter plate 30.

The reflection plate 32 is arranged in front of the second display 28 and the filter plate 30 at a position parallel to the filter plate 30. As a result, the display image from the first display 26 is projected as it is on the display surface as the real image 26a, and the display image from the second display 28 is transmitted through the reflection plate 32 and the filter plate 30. It is projected as a virtual image 28a on the same angle line as the real image 26a.

That is, the first display 26 emits light or lights up and the real image 26
When a is projected, the filter plate 30 directly transmits this light without reflecting it. Therefore, the driver can visually recognize the real image 26a through the filter plate 30 as it is. On the other hand, when the second display 28 emits or lights up, this light first enters the reflecting plate 32 at a predetermined angle, and the reflected light enters the filter plate 30 at the same angle as the incident angle to the reflecting plate 32. To do. The filter plate 30 reflects the light from the reflection plate 32 at the same angle as the incident angle without transmitting the light.

At this time, as shown in FIG. 3, most of the light reflected by the reflector 32 is reflected by the surface of the filter plate 30, but the filter plate 30 has a low transmittance (about 4%) as described above. ). Therefore, a part of the light reflected by the back surface of the filter plate 30 passes through the filter plate twice,
The light emitted from the filter plate 30 is invisible. In this way, the filter plate 30 is a single filter plate and a reflection mirror,
And it will play the role of the front glass.

Therefore, according to the present embodiment, when the display images of both the first display 26 and the second display 28 are visually recognized, the double image due to the light reflected by the filter plate 30 is removed, so that it is clear. It is possible to obtain various displays. For this reason, the driver can remarkably reduce eye fatigue and quickly grasp the displayed image. Further, when the meter display is performed by a real image display, conventionally, at least two sheets of a front glass and a small acrylic were required for a normal meter, but according to this embodiment, one small acrylic is sufficient, and the structure is simplified as a whole. Can be realized.

[Advantages of the Invention] As described above, according to the present invention, the smoke-treated filter plate inclined with respect to the first display and the second meter on the filter plate via the reflector. By including the second display for providing a display, a double image due to reflection can be removed when a real image and a virtual image from different displays are obtained, and a clear display can be obtained.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a vehicle display device according to the present invention, FIG. 2 is a diagram showing the relationship between wavelength and transmittance and reflectance of a filter plate, and FIG. 3 is a detailed view at the time of reflection on the filter plate. FIG. 4 is a sectional view of a main part of a conventional vehicular display device, and FIG. 5 is a view showing details of the reflection. 20 ... Instrument panel 26 ... 1st display 28 ... 2nd display 30 ... Filter plate 32 ... Reflector

Claims (1)

[Scope of utility model registration request] 1. A vehicle display device for displaying various vehicle information by means of a display incorporated in a vehicle instrument panel, wherein the vehicle display is arranged at a predetermined angle with respect to a first display provided on the instrument panel. And a second indicator for providing a second meter display to the filter plate via a reflection plate, the filter plate being a smoke-treated transparent plate. Vehicle display device.