JP2012228912A - Vehicular display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an art for improving users' floating feeling and a stereoscopic effect in a display device mounted on a vehicle.SOLUTION: The vehicular display device 10a includes an indicator 70, a reflector 40, and a magnifying mirror 30a in sequence from below. The light emitted upward from the indicator 70 penetrates the reflector 40, is reflected by the magnifying mirror 30a to be concentrated downward, and is reflected in the direction of an eye range ER by the reflector 40, lastly. A meter bottom surface 62 forms a surface continued to an instrument panel 80 when fitted to the instrument panel 80. An arrangement depth H is determined so that a designed light 72 cannot be seen straight from the eye range ER, and that reflection in a windshield 90 may be prevented. A rear position 68 of a display opening 71 is determined so that a wall surface may not be reflected in the windshield 90.

Description

  The present invention relates to a vehicle display device, for example, a vehicle display device mounted on a vehicle and displaying a speedometer and a warning light.

  In recent years, as a display device for vehicles (vehicle instrument), in order to realize a display mode that gives a sense of depth, instruments such as a speedometer, a fuel gauge, a distance meter, and the like that indicate information necessary for driving a vehicle are used as a background design. A configuration for displaying the image so as to float is used. By adopting such a configuration, the display mode of the display device is recognized three-dimensionally.

  In order to produce such a three-dimensional effect, the real image display means is, for example, a speedometer or a tachometer, and the design portion of the light guide plate is, for example, a scale, a number, or the like. A viewer such as a driver views the real image of the real image display means (for example, a speedometer) through the half mirror, and at the same time, visually recognizes the virtual image of the background design on the inner surface of the background display member formed on the half mirror.

  In addition, when the display device is applied to a vehicle instrument, when the driver turns on the ignition switch, first, a technique is proposed in which a virtual image of the background design becomes visible and the pointer instrument becomes visible after a while. (See Patent Document 1). In this technique, when a viewer looks at a vehicle instrument, a three-dimensional virtual image appears first. Here, since the viewer's eyes can easily and immediately focus on a solid having a certain depth in the viewing direction, the viewer immediately recognizes the solid. Next, after a predetermined time has elapsed, a pointer instrument appears. At this time, the eyes of the viewer recognize the pointer instrument position using the stereoscopic virtual image position as a clue. That is, since the viewer's eyes are already in focus on the stereoscopic virtual image, the pointer instrument appears as if it floats in the air on the viewer side relative to the stereoscopic virtual image. Thereby, it is possible to realize a display device with a rich stereoscopic effect and a novel appearance.

  Furthermore, there is a vehicle-mounted display device 110 shown in FIG. 13 as a technique for improving the floating feeling of the display. In this display device 110, the meter bottom surface 170 and the front portion 175 ′ of the instrument panel 180 constitute a continuous surface 175. Furthermore, the background of the virtual image display A100 projected on the transparent reflector 140 formed on the upper side of the meter bottom surface 170 is used as the instrument panel 180, thereby giving a floating feeling to the virtual image display A100.

JP 2005-308488 A

  By the way, although the display which gives the floating feeling of the above-mentioned display has been improved to some extent, there are still problems to be overcome. For example, in the display device 110 shown in FIG. 13 described above, since the virtual image display A100 forms an image in the vicinity of the reflector 140, it may be difficult to obtain a sense of display depth. In addition, since the virtual image display A100 is imaged between the reflector 140 and the instrument panel 180, the display is substantially the same as the configuration in which the display is actually arranged on the instrument panel 180, giving the user a strange feeling of display. There is a problem that it is difficult. Furthermore, since the display is expressed on the same plane (plane), there is a problem that it is difficult to obtain a stereoscopic effect.

  The present invention has been made in view of such a situation, and an object of the present invention is to provide a technique for improving a floating feeling and a three-dimensional feeling that a user feels in a display device mounted on a vehicle.

One embodiment of the present invention relates to a vehicle display device. When this vehicle display device is installed in an instrument panel of a vehicle, a bottom surface that constitutes a surface that is continuous with the instrument panel, and light is emitted from an opening provided in the bottom surface, A first display unit disposed at a predetermined depth from the bottom surface; a first reflection unit disposed so as to face the first display unit and reflecting light from the first display unit; An eye that is disposed between the first display means and the first reflection means, transmits light from the first display means, and transmits light from the first reflection means to the vehicle. A second reflecting means for reflecting toward the range, and a region where a virtual image is displayed by the first display means when the instrument panel is installed can visually recognize the instrument panel from the eye range. And the first display means is disposed at a position where the first display means cannot be directly viewed from the eye range and is not projected on the windshield when installed on the instrument panel. .
You may provide a 2nd display means on the path | route from the said 1st display means to the said 2nd reflection means.
Further, the second display means may be configured to emit light from a reflection surface of the first reflection means.
The second display means may be provided near the outside of the first reflecting means.
Further, the second display means is provided between the opening where the first display means is disposed and the first display means, and is not directly viewed from the eye range and does not appear on the windshield. May be arranged.

  ADVANTAGE OF THE INVENTION According to this invention, in the display apparatus mounted in a vehicle, the technique which improves the floating feeling and three-dimensional feeling which a user feels can be provided.

It is a figure which shows the display apparatus for vehicles based on 1st Embodiment. It is a figure which shows the display apparatus for vehicles of a window projection state based on 1st Embodiment. It is a figure which shows the display apparatus for vehicles based on the modification of 1st Embodiment. It is a figure which shows the display apparatus for vehicles based on 2nd Embodiment. It is a figure which shows the display apparatus for vehicles based on the modification of 2nd Embodiment. It is a figure which shows the display apparatus for vehicles based on the modification of 2nd Embodiment. It is a figure which shows the display apparatus for vehicles based on the modification of 2nd Embodiment. It is a figure which shows the expansion mirror and virtual image display mode which have a grid | lattice-shaped opening based on the modification of 2nd Embodiment. It is a figure which shows the display apparatus for vehicles based on 3rd Embodiment. It is a figure which shows the display apparatus for vehicles based on 4th Embodiment. It is a figure which shows the display apparatus for vehicles based on 5th Embodiment. It is a figure which shows the display apparatus for vehicles based on the modification of 5th Embodiment. It is a figure which shows the display apparatus for vehicles based on a prior art.

  Hereinafter, modes for carrying out the invention (hereinafter referred to as “embodiments”) will be described with reference to the drawings. The outline of the present embodiment is as follows. In the present embodiment, the meter bottom surface and the instrument panel are connected by a continuous surface. By making the background of the virtual image display projected on the reflective plate having selective transparency formed on the upper side of the surface an instrument panel, a floating feeling is given to the virtual image display. Then, a virtual image is formed in front of the vehicle with an opaque instrument panel skin to create a far viewpoint, thereby realizing a display that gives the user a “depth” and “wonder”. In addition, an expression with a stereoscopic effect is realized by adding displays with different viewing distances. This will be specifically described below.

<First Embodiment>
FIG. 1 is a diagram showing a vehicular display device 10a according to the present embodiment, and particularly shows a state in which the vehicular display device 10a is mounted on an instrument panel 80 of the vehicle with attention paid to the internal structure. FIG. 1A shows the relationship between the vehicle display device 10a and the eye range ER. Moreover, FIG.1 (b) has expanded and shown the instrument panel 80 vicinity of the display apparatus 10a for vehicles. Further, FIG. 2 additionally shows the vehicle display device 10a in a state where the window is virtually projected for the explanation of window projection with respect to FIG. In the drawing, the left side is assumed to be the front of the vehicle and the right side is assumed to be the rear of the vehicle.

  The eye range ER is based on the provisions of “Automobile Driver Eye Range” of JIS D 0021. In designing the cab of an automobile, the eye position changes up and down and back and forth depending on the driver's body shape so that the majority of drivers can drive with good upper and lower visibility. The design is performed based on the eye range defined by the above JIS including the movement range. As a result, when the average body type driver is seated in the driver's seat of the vehicle, the eye height is maintained within the range of the eye range ER, and the upper view and the lower view are secured. It is possible to drive in a good forward direct view.

  The vehicle display device 10a includes a display 70, a magnifying mirror 30a, and a reflection plate 40. Although details will be described later in this embodiment, the display 70, the reflector 40, and the magnifying mirror 30a are arranged in this order from the bottom. The light output upward from the display device 70 is transmitted through the reflection plate 40 and reflected by the magnifying mirror 30a so as to be condensed downward, and finally reflected by the reflection plate 40 in the direction of the eye range ER. The curvature of the reflecting surface of the magnifying mirror 30a is set so as to have a focus on the eye range ER. That is, when the light reflected by the magnifying mirror 30a and further reflected by the reflecting plate 40 reaches the eye range ER, the light is condensed at one point in the center of the eye range ER.

  The vehicle display device 10a includes a meter bottom surface portion 62, a case front wall surface 63, a meter hood 20, and a display housing 65 as a casing. The case front wall surface 63 is formed of a transparent material such as a transparent acrylic resin plate. Therefore, the instrument panel 80 on the front side of the vehicular display device 10a can be visually recognized from the eye range ER side.

  The meter bottom surface portion 62 is configured to form a surface continuous with the instrument panel 80 when the vehicular display device 10a is attached to the instrument panel 80. In particular, a continuous surface with the front and rear instrument panels 80 is formed.

  Further, a display opening 71 is formed at a predetermined position on the meter bottom surface portion 62. A display housing 65 extending downward from the display opening 71 is provided. The display housing 65 is set to a predetermined depth H (hereinafter referred to as “arrangement depth H”). A display 70 is provided at the bottom. A design lamp 72 is provided on the upper surface portion of the display device 70, and light of a predetermined design is output from the design lamp 72 upward. For convenience, the wall surface of the display housing 65 on the vehicle front side (left side in the figure) is called a display housing front part 65a, and the wall surface on the vehicle rear side (right side in the figure) is called a display housing rear part 65b.

  The magnifying mirror 30a is housed in a mirror case 22 that is open on the lower side, and is disposed at a predetermined distance from the display unit 70 with the reflecting surface facing downward to face the display unit 70. Further, the meter hood 20 is arranged so as to cover the upper side of the mirror case 22, that is, the windshield 90 side. And the last part 45 of the reflecting plate 40 is arrange | positioned so that it may become before the last part of the meter hood 20. FIG. That is, the reflecting plate 40 is configured not to be exposed to the outside (rear side) from the meter hood 20.

  The reflection plate 40 is arranged in an inclined shape that goes downward from the front side (left side) to the rear side (right side). More specifically, the rearmost portion 45 is fixed near the rear end portion of the meter bottom surface portion 62, and the foremost portion 46 is fixed near the lower front end portion of the mirror case 22.

  The reflection plate 40 has been subjected to half mirror processing or wavelength selection mirror processing, and transmits light incident from the lower side in the figure to the upper side and reflects light incident from the upper side. That is, the light emitted from the design lamp 72 passes through the reflecting plate 40 and travels toward the magnifying mirror 30a. Light traveling downward from the magnifying mirror 30a is reflected by the reflecting plate 40 and travels toward the eye range ER. Therefore, the light emitted from the design lamp 72 reaches the eye range ER after being folded twice along the optical path. At this time, the virtual image V of the design lamp 72 is present in front of the instrument panel 80 (on the left side in the drawing).

  By the way, if the design lamp 72 can be directly visually recognized from the user viewpoint E located in the eye range ER, or if the design lamp 72 is reflected on the windshield 90, a good forward direct view cannot be secured. Therefore, as measures against them, it is necessary to consider the arrangement of the design lamp 72 and the like. Specifically, the arrangement depth H is set so that the design lamp 72 cannot be directly viewed from the user viewpoint E of the eye range ER and does not appear on the windshield 90. Further, the rear position 68 of the display opening 71, that is, the position where the display housing rear portion 65b extends is set so that the wall surface does not appear on the windshield 90. As a result, the distance L from the rear position 68 of the display opening 71 to the front end portion of the reflecting plate 40 is defined.

  The direct view of the design lamp 72 from the eye range ER and the avoidance of window reflection on the windshield 90 will be further described. For example, for direct viewing from the eye range ER, the optical path A12 closest to the display 70 shown when the user viewpoint E is located at the position E2 extending outward from the eye range ER (see FIG. 2) is just the display opening 71. The display housing front 65a is reached through the rear position 68. That is, it does not reach the display device 70. Therefore, the display device 70 cannot be viewed directly regardless of the position of the eye range ER where the user viewpoint E is present. As for the window projection, the light (light path B11) which is emitted from the rearmost side and reflected by the windshield 90 through the rear position 68 of the display opening 71 from the design lamp 72 is reflected from the eye range ER. It only has to be off. Other light passes through a position further away from the eye range ER as shown in the optical path B12 due to the arrangement of the meter hood 20 and the like.

  As described above, according to the present embodiment, when the ignition is turned off, the driver can see the meter display range as an open space with the instrument panel 80 in the background. Then, a display having a floating feeling, a sense of depth, a mysterious feeling, and a three-dimensional feeling is displayed in the space opened by the ignition on. As shown in the vehicle display device 10b of FIG. 3, a flat mirror 30b may be used instead of the magnifying mirror 30a. However, since the virtual image position V is a position moved rearward (right side in the figure), the sense of depth is reduced according to the amount of movement.

<Second Embodiment>
The present embodiment is a modification of the first embodiment and improves the stereoscopic effect. The configuration of the above-described magnifying mirror 30a is partially changed.

  FIG. 4A shows the vehicle display device 10c of the present embodiment. FIG. 4B shows a magnifying mirror 30c having an illumination hole 31c. Further, FIG. 4C shows a display visually recognized from the user viewpoint E.

  In the mirror case 22, an magnifying mirror 30c, an illumination LED 23c that functions as a backlight, and a light guide plate 24c are arranged. The reflecting surface of the magnifying mirror 30c is subjected to mirror vapor deposition and is provided with an opening 31c for illumination.

  The light guide plate 24c has a light diffusing function and is disposed on the back surface (the upper side in the drawing) of the magnifying mirror 30c. Moreover, LED23c for illumination is arrange | positioned so that the front side edge part and rear side edge part of the light-guide plate 24c may be opposed. Light from the illumination LED 23c passes through the light guide plate 24c and exits from the illumination aperture 31c of the magnifying mirror 30c. That is, point group light is emitted from the magnifying mirror 30c.

  At this time, the 1st virtual image V1 by the light radiate | emitted from the design lamp 72 of the indicator 70 is located ahead (illustration left side) from the instrument panel 80 similarly to 1st Embodiment. On the other hand, a point group-like second virtual image V2 is generated at the front position by the distance between the magnifying mirror 30c and the reflector 40 by the light emitted from the illumination aperture 31c of the magnifying mirror 30c. Here, the second virtual image V <b> 2 is located on the rear side (right side in the drawing) from the case front wall surface 63. That is, from the user viewpoint E, the first virtual image V1 is visually recognized in a manner having a difference in viewing distance so that the second virtual image V2 is positioned in the front (near). As a result, it is possible to express a virtual image with a more stereoscopic effect to the user.

  Modifications of the present embodiment are shown in FIGS. In the vehicle display device 10d of the modified example of FIG. 5, the rear surface (upper side in the drawing) of the magnifying mirror 30d has a prism shape 33d, and the light of the illumination LED 23d is irradiated from the edge portion of the magnifying mirror 30d. The light incident from the edge portion of the magnifying mirror 30d is reflected to the front side (illustrated side) by the prism shape 33d and is emitted from the illumination aperture 31d. With such a structure, the light guide plate 24c of FIG. 4 can be omitted, and the number of components can be reduced.

  The vehicular display device 10e of the modification of FIG. 6 employs a magnifying mirror 30e in a form in which the magnifying mirror 30d of FIG. The magnifying mirror 30e includes a painted surface 33e whose back surface is subjected to a diffusion treatment such as white coating. An opening 31e for illumination is formed on the surface side (lower side in the figure), and the light reflected and diffused by the coating surface 33e is emitted from the opening 31e for illumination and displays the second virtual image V2. With this configuration, the cost of the magnifying mirror 30e can be reduced.

  In the vehicle display device 10f of the modification of FIG. 7, instead of the illumination LED 23c and the light guide plate 24c having the configuration shown in FIG. 4, a plurality of illumination LEDs 23f attached to the substrate 24f are arranged on the back surface of the magnifying mirror 30f. To do. The light from the illumination LED 23f is emitted directly from the illumination aperture 31f without being reflected inside the magnifying mirror 30f. With such a configuration, adjustment of the light emitted from the illumination aperture 31f is facilitated.

  FIG. 8 shows an illumination aperture 31g provided in the magnifying mirror 30g, which is deformed into a lattice shape. Here, a grid-like second virtual image V2 is displayed so as to cover the first virtual image V1. In addition to the lattice shape, various patterns can be adopted as the illumination aperture 31g.

<Third Embodiment>
FIG. 9 shows a display mode visually recognized by the vehicle display device 10i of this embodiment and the user. Fig.9 (a) shows the structure of the display apparatus 10i for vehicles. As shown in the figure, a second display 25i is provided around the magnifying mirror 30i. For the display of the second indicator 25i, an illumination LED 23i is provided on the substrate 24i on the back side (upper side in the drawing). The second indicator 25i displays a telltale (warning light) or a display frame that is always lit.

  Specifically, the second display 25i emits light corresponding to the second virtual image V2. And since the 2nd indicator 25i is arrange | positioned around the expansion mirror 30i, it does not overlap with the 1st virtual image V1, and also in a virtual image display, the 1st virtual image V1 corresponding to a meter display is displayed. It is visually recognized that the second virtual image V2 corresponding to the tell tale or the like exists around. By adopting such a configuration, it is possible to express a virtual image with a three-dimensional effect, as in the above-described embodiment. Further, by displaying the tell tale or the like so as to be on the front side of the user, the user's attention can be further enhanced.

<Fourth Embodiment>
FIG. 10A shows the vehicle display device 10j of the present embodiment, and FIG. 10B shows an enlarged configuration of the region X (second display 25j) of FIG. 10A. FIG. 10C shows a virtual image display mode.

  In the present embodiment, in order to give depth to the second virtual image V2, an aluminum mirror 27j and a half mirror 28j are arranged as mirrors on the second display 25j, and the light from the illumination LED 23j is linearly discrete. The reflected light is emitted. Specifically, as shown in FIG. 10B, a substrate 24j is provided on the back side of the magnifying mirror 30j.

  An aluminum mirror 27j is provided at a predetermined distance from the substrate 24j side to the lower side. Further, a half mirror 28j is provided at a predetermined distance from the aluminum mirror 27j. The illumination LED 23j is disposed outside the aluminum mirror 27j, and the half mirror 28j is disposed so as to cover the illumination LED 23j.

  A part of the light emitted from the illumination LED 23j is first transmitted through the half mirror 28j (going straight in the downward direction in the figure) and partially reflected in the direction of the aluminum mirror 27j. Next, a part of the light reflected by the aluminum mirror 27j is transmitted by the half mirror 28j, and a part of the light is reflected again toward the aluminum mirror 27j. This phenomenon is repeated, and as shown in FIG. 10 (b), there is a feeling of depth such that the reflected virtual images V11 to V1n by the aluminum mirror 27j corresponding to the reflected virtual images V21 to V2n by the half mirror 28j become farther toward the inside. Configure. As a result, light corresponding to the same display as that displayed by the matching mirror is emitted from the second display 25j. The orientations of the aluminum mirror 27j and the half mirror 28j are determined depending on the interval between the virtual images when displayed as a mating mirror.

  And since the light radiate | emitted from the 2nd indicator 25j contains the virtual image display with a depth, the 2nd virtual image V2 also becomes far away and the 1st virtual image V1 approaches as shown in the figure. Is displayed.

<Fifth Embodiment>
FIG. 11 shows the vehicular display device 10k and the virtual image display mode of the present embodiment. In the vehicle display device 10k of the fifth embodiment, a part of the display housing 65 of the first embodiment is used as the second display 69. As shown in FIG. 11B, during the virtual image display, the second virtual image V2 is displayed so as to extend outward from the four corners of the rectangular first virtual image V1. For this display, the second indicator 69 includes a light guide portion 69b disposed at the four corners of the display housing 65, and an LED 69b that supplies light from the edge portion to the light guide portion 69b. . Since the light guide part 69b is formed so as to extend in the vertical direction, a sense of depth can be obtained even in the second virtual image V2. Note that the light guide portion 69b that is actually bright needs to be disposed at a height that cannot be directly visually recognized from the eye range ER.

  As a modification of the present embodiment, as shown in the vehicle display device 10m of FIG. 12A, as a configuration of the second indicator 69 arranged in the indicator housing 65, a plurality of LEDs are vertically arranged. An LED array 79 configured side by side may be employed. In this case, the second virtual image V2 is displayed discretely in a dot shape.

  The present invention has been described based on the embodiments. This embodiment is an exemplification, and it is understood by those skilled in the art that various modifications can be made to each of those components and combinations thereof, and such modifications are also within the scope of the present invention.

10a to 10f, 10i to 10k, 10m Display device for vehicle 20 Meter hood 22 Mirror case 23c, 23d, 23f, 23i LED for illumination
24c Light guide plate 25i Second display device 30a, 30c-30g, 30i-30k, 30m Magnifying mirror 30b Flat plate mirror 31c, 31d, 31e, 31f, 31g Opening for illumination 33d Prism shape 40 Reflector plate 62 Meter bottom surface portion 63 Case Front wall 65 Display housing 69 Second display 70 Display 71 Display opening 72 Design lamp 79 LED array 90 Windshield 80 Instrument panel

Claims (5)

A bottom surface that forms a surface that is continuous with the instrument panel when installed on the instrument panel of the vehicle;
First display means disposed at a predetermined depth from the bottom so as to emit light from an opening provided in the bottom;
A first reflecting means arranged to face the first display means and reflecting light from the first display means;
An eye that is disposed between the first display means and the first reflection means, transmits light from the first display means, and transmits light from the first reflection means to the vehicle. A second reflecting means for reflecting toward the range;
When installed on the instrument panel, a housing in which a virtual image displayed by the first display means can be viewed from the eye range,
With
When the first display means is installed on the instrument panel, the first display means is disposed at a position where the first display means cannot be directly viewed from the eye range and does not appear on the windshield. .   The vehicle display device according to claim 1, further comprising a second display unit on a path from the first display unit to the second reflection unit.   The vehicle display device according to claim 2, wherein the second display unit is configured to emit light from a reflection surface of the first reflection unit.   The vehicle display device according to claim 2, wherein the second display means is provided in the vicinity of the outside of the first reflecting means.   The second display means is provided between the opening where the first display means is disposed and the first display means, and is not directly viewed from the eye range and is disposed at a position where the window shield does not project. The vehicle display device according to claim 2, wherein the vehicle display device is provided.

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