JPH04101578U - Vehicle display device - Google Patents

Abstract

(57) [Summary] [Purpose] A vehicle that allows a display image displaying driving information such as traveling speed to be visually recognized as a virtual image by reflecting the display image of a display device onto an eye range on the driver's seat side with a first reflector. The purpose of this invention is to improve the display quality of displayed images and to improve visibility (improve contrast) with respect to display devices. [Configuration] Between the first reflector 31 and the eye range 51,
A virtual image X ₁₁ of the displayed image
The top plate 62 is arranged so that a virtual image X ₁₁ is formed outside the real image reflection area A _R2 for 1.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This idea reflects the display image on the driver's seat side eye range with a first reflector. By doing so, the display image that displays driving information such as driving speed can be visually perceived as a virtual image. This invention relates to a display device for a vehicle.

0002

[Conventional technology]

Conventionally, in vehicle display devices, reflective plates have been used to increase the viewing speed. There are some that display images at a distance. In this type of vehicle display device, the longer the optical path length due to reflection, the more effective it is for distant display. This reduces the space occupied by the optical path of the reflected light, making the whole compact, and A longer route has been proposed.

0003 FIG. 2 is a side view showing a schematic configuration of an example of the conventional vehicle display device described above. In Figure 2, 11 is the meter hood part of the dashboard, 21 is the dashboard A liquid crystal display or fluorescent display installed in the road that displays driving information such as driving speed. A self-luminous display such as a light display tube, 31 is the display surface side of the display 21 (display light emission side). A first reflecting plate having translucency provided on the side) is shown, and this first reflecting plate 3 1 is made of, for example, dark transparent smoked acrylic.

0004 Reference numeral 41 denotes a second reflecting plate facing the display 21 via the first reflecting plate 31. , the supplied display light is totally reflected by the first reflecting plate 31. 51 is an eye range on the driver's seat side that visually checks the display image on the display 21, and 51U is an eye range. 51C is the center of the eye range 51, 51D is the bottom of the eye range 51 Show the edge.

Reference numeral 61 indicates a concave surface plate on the eye range 51 side provided between the first reflector 31 and the eye range 61, and is made of, for example, dark-colored transparent smoked acrylic. Protection of the first and second reflecting plates 31 and 41 and dust adhering to the first and second reflecting plates 31 and 41 degrade the display quality of the displayed image and reduce visibility (decreased contrast). This is to prevent this from happening. The center O ₁ of the top plate 61 is located near the upper right corner of the meter hood portion 11 in order to satisfy the non-reflection condition.

A _R1 indicates a real image reflection area for the eye range 51, and only the range formed by light from the upper end 51U of the eye range 51 to the upper and lower ends of the top plate 61 being reflected by the top plate 61 is shown. . A _S indicates a viewing area, and a first line connecting the upper end 51U of the eye range 51 and the lower end of the second reflector 41 reflected on the first reflector 31, and the lower end 51D of the eye range 51 and the This is the range formed by the second line connecting the upper end of the second reflector 41 reflected on the first reflector 31 and the second reflector 41 reflected on the first reflector 31.

[0007]X represents a display image visually recognized from the eye range 51, and _X1 to _X4 represent virtual images. Note that 32a and 32b indicate light shielding members provided on the display 21 side of the first reflection plate 31, which direct the display light of the display 21 to the range of the second reflection plate 41 and from the eye range 51. This makes the display 21 invisible. Further, the top plate 61 is arranged so as to form a virtual image X ₁ in the real image reflection area A _R1 for the display image X eye range 51 of the display 21 .

[0008] Next, the operation will be explained. First, the display light of the display image emitted from the display 21 passes through the first reflection plate 31. Then, it is reflected by the second reflecting plate 41. Then, the reflected light that has been totally reflected by the second reflecting plate 41 is reflected again by the first reflecting plate 31. It is reflected toward the eye range 51.

[0009] Therefore, when the first reflecting plate 31 is viewed from the eye range 51, the display image X is visually recognized as a virtual image in the viewing area A _S behind the first reflecting plate 31. The display image X visually recognized in this way is displayed at a distant position corresponding to the optical path length within the range of the second reflection plate 41 reflected on the first reflection plate 31, so that the display image X has good visibility. I can do it.

0010

[Problem that the idea aims to solve]

Since the conventional vehicle display device is configured as described above, that is, since the display image X is formed as a virtual image _{X 1} by the front plate ₆₁ in the real image reflection area A It is reflected by the reflection plate 31 and becomes a virtual image X ₂ .

[0011] Then, this virtual image X ₂ is enlarged and reflected by the second reflection plate 41 to become a virtual image X ₃ , and this virtual image X ₃ is reflected by the first reflection plate 31 to form a virtual image X ₄ in the viewing area A _S. will be located.

[0012] Therefore, this image X ₄ becomes a ghost and is visually recognized from the eye range 51 together with the display image X, which is disadvantageous in that it lowers the display quality of the display image X and lowers the visibility (reduces the contrast). was there.

[0013] This idea was made to solve the above-mentioned problems, and the display image can improve display quality and improve visibility (improve contrast). The present invention provides a display device for a vehicle.

[0014]

[Means to solve the problem]

In order to achieve the above-mentioned purpose, the vehicle display device according to this invention has the following features: The display is equipped with a concave top plate on the eye range side between the reflector and the eye range. A virtual image of the display image is formed as a virtual image outside the real image reflection area for the eye range of the top plate. The top plate is arranged so that

[0015]

[Effect]

The vehicle display device in this invention is configured as described above, so the display A virtual image of the image is formed outside the real image reflection area for the eye range of the top plate. Therefore, the display image formed outside the real image reflection area for the eye range of the top plate Even if the virtual image is reflected by the first and second reflecting plates, it will not be formed as a virtual image in the visible area. I won't.

[0016]

【Example】

Hereinafter, an embodiment of this invention will be described based on the drawings. FIG. 1 is a side view showing the configuration of a vehicle display device according to an embodiment of this invention. Components that are the same as or corresponding to those in FIG. 2 are given the same reference numerals and their explanations will be omitted.

[0017] In FIG. 1, 12 is a predetermined length from the lower end of the top plate 62 to the eye range 51 side, which will be described later. 6 shows a light absorption plate that absorbs light from the top plate 62. 62 is an eye range 5 provided between the first reflector 31 and the eye range 51. A concave top plate is shown on the first side, and is made of, for example, dark-colored transparent smoked acrylic. protection of the first and second reflection plates 31 and 41, and protection of the first and second reflection plates. Dust attached to 31 and 41 deteriorates the display quality of the displayed image and makes it difficult to see. This is to prevent deterioration in quality (reduction in contrast). The top plate 62 receives light from the eye range 51 in order to satisfy the non-reflection condition. The light is directed downward and absorbed by the light absorption plate 12.

A _R2 indicates a real image reflection area for the eye range 51, which is the area formed by the light from the upper end 51U of the eye range 51 to the upper and lower ends of the top plate 62 being reflected by the top plate 62, and the area of the eye range 51. The range formed by light reflected from the top plate 62 from the bottom end 51D to the top and bottom ends of the top plate 62 is illustrated.

X ₁₁ to X ₄₁ represent virtual images. Note that the top plate 62 is arranged so that the display image X of the display 21 is focused on the real image reflection area A _R1 with respect to the eye range 51 as a virtual image X ₁₁ .

[0020] Next, the operation will be explained. First, the display light of the display image emitted from the display 21 passes through the first reflection plate 31. Then, it is reflected by the second reflecting plate 41. Then, the reflected light that has been totally reflected by the second reflecting plate 41 is reflected again by the first reflecting plate 31. It is reflected toward the eye range 51.

Therefore, when looking at the first reflecting plate 31 from the eye range 51, the display image X is visible as a virtual image in the viewing area A _S behind the first reflecting plate 31, and the display image Since the image is displayed at a distant position corresponding to the optical path length within the range of the second reflection plate 41 reflected on the reflection plate 31, a display with good visibility can be achieved.

[0022] At this time, since the display image X is formed outside the real image reflection area A _R2 as a virtual image X ₁₁ by the front plate 62, this virtual image X ₁₁ is reflected by the first reflecting plate 31 and becomes a virtual image X ₂₁ . . Then, this virtual image X ₂₁ is enlarged and reflected by the second reflection plate 41 to become a virtual image X ₃₁ , and this virtual image X ₃₁ is reflected by the first reflection plate 31, and a virtual image X ₄₁ is located outside the visible area A _S. It turns out. Further, when viewing the display image X from the eye range 51, the light from the eye range 51 is reflected by the light absorption plate 12 at the top plate 62 and absorbed.

[0023] Therefore, when viewing the display image X, the virtual image X ₄₁ that becomes a ghost is no longer visible, so that the display quality of the display image X is improved and visibility is improved (contrast is improved). Further, since the light from the eye range 51 is reflected by the light absorption plate 12 at the front plate 62 and absorbed, the display quality of the displayed image X is further improved, and visibility is improved (contrast is improved).

[0024] In addition, in the above embodiment, an example in which the light absorption plate 12 was provided was explained, but the light absorption plate 12 was provided. Similar effects can be obtained even without providing 12.

[0025]

[Effect of the idea]

As described above, according to this invention, there is a gap between the first reflector and the eye range. A virtual image of the displayed image on the display is created by the top plate having a concave shape on the front side. Since the top plate is arranged so that a virtual image is formed outside the real image reflection area, the Virtual images other than the displayed image to be recognized will no longer appear in the visible area.

[0026] Therefore, since no virtual image is generated within the viewing area, the display quality of the displayed image is improved. visibility (improved contrast). In addition, a light absorption plate that absorbs light from the top plate is installed from the bottom of the top plate to the eye range side. Since the length is long, the display quality of the display image is further improved and visibility is improved (contrast This has the effect of improving performance.

[Brief explanation of drawings]

FIG. 1 is a side view showing a schematic configuration of a vehicle display device according to an embodiment of the invention.

FIG. 2 is a side view showing a schematic configuration of an example of a conventional vehicle display device.

[Explanation of symbols]

11 Meter hood portion 12 Light absorption plate 21 Display 31 First reflecting plate 41 Second reflecting plate 51 Eye range 51U Upper end 51D Lower end 62 Top plate A _R2 Real image reflection area A _S Visible area X Display image X ₁₁ to X ₄₁ virtual image

Claims (2)

[Scope of utility model registration request] 1. Display light emitted from a display device and transmitted through a first reflective plate having transparency is reflected by a second reflective plate.
By reflecting the reflected light from the second reflecting plate to the eye range by the first reflecting plate, the display image of the display device is transferred from the eye range to the first reflecting plate. In the vehicle display device, the vehicle display device is provided with a top plate having a concave shape on the eye range side between the first reflecting plate and the eye range, the display being made visible as a virtual image within a display range of A display device for a vehicle, characterized in that the reflection plate is arranged so that a virtual image of the display image is formed as a virtual image outside a real image reflection area of the front plate with respect to the eye range. 2. A top plate is arranged so that the light from the eye range is directed downward, and a light absorption plate of a predetermined length is provided from the lower end of the top plate to the eye range side to absorb the light from the top plate. The vehicle display device according to claim 1, characterized in that: