WO2008050842A1 - Display device for vehicle - Google Patents

Abstract

A display device mounted on an instrument panel of a vehicle and having a display device section and a concave mirror section. The display device section has at least a display body for displaying vehicle body information in a display region having a substantially rectangular shape in a plan view. The concave mirror section is placed in the front of the vehicle so as to face the display device section and reflects light, which is displayed in the display region, to cause the reflected light to be displayed in an enlarged form for an occupant of the vehicle. The concave mirror and display body are arranged such that the display body is curved in the longitudinal direction of the display region so as to correspond to the shape of the reflection surface of the concave mirror and the curvature center of the concave mirror is at the curvature center of the display body.

Description

 Specification

 Vehicle display device

 Technical field

 [0001] The present invention relates to a reflection-type vehicle display device provided on an instrument panel of a vehicle.

 Background art

 Conventionally, a reflection-type vehicle display device provided on an instrument panel of a vehicle is known.

 In FIG. 1, 1 is an instrument panel of a vehicle, 2 is a vehicle information display section, 2a is a translucent cover of the vehicle information display section 2, and 3 is a vehicle for the conventional example constituting the vehicle information display section 2. It is a display device.

 [0004] The vehicle information display unit 2 displays information about the vehicle such as the speed of the vehicle and the rotational speed of the engine.

 [0005] The vehicle display device 3 is provided on the instrument panel 1 and is located on the back side of the translucent cover 2a.

[0006] The vehicular display device 3 is mainly formed of resin, and includes a housing 4, a display device unit 5, and a reflecting mirror unit 6, as shown in FIG. 2A.

[0007] The casing 4 has openings in the vehicle front-rear direction.

 [0008] A display device section 5 is provided on the lower wall 4a on the vehicle rear side of the casing 4, and a reflecting mirror section 6 is provided on the vehicle front side so as to close the opening.

[0009] The reflecting mirror section 6 has a shape that forms part of a concave mirror, and has a reflecting surface on the vehicle rear side.

 [0010] The reflecting mirror unit 6 is positioned on the front side of the vehicle so as to face the display device unit 5, and is disposed so that the display device unit 5 is positioned on the optical axis of the reflecting mirror unit 6! .

As shown in FIG. 2B, the display device section 5 has a substantially rectangular parallelepiped appearance.

[0012] A flat, substantially rectangular display body 7 is provided on the front side of the display device section 5 in the vehicle. Inside the display device section 5, a backlight for transmission illumination (on the back side of the display body 7 ( (Not shown) is provided. [0013] The display body 7 is composed of an LCD (Liquid Crystal Display), and the light emitted from the backlight is transmitted through the LCD!

[0014] The display body 7 has a substantially rectangular display area 7a. The display area 7a is based on a signal sent from a control unit (not shown)! Displays information about the vehicle.

 [0015] The light displayed in the display area 7a is reflected by the reflecting mirror unit 6 and enlarged and displayed as a virtual image for the vehicle occupant.

[0016] Therefore, the occupant can view the vehicle information such as the speed and the engine speed by looking at the vehicle information display unit 2.

In addition, a vehicle reflective display device that displays display information on a display body without using a half mirror or the like is known (see Japanese Patent Application Laid-Open No. 2000-52812).

 Disclosure of the invention

 Problems to be solved by the invention

[0018] However, when the rectangular display area 7a is enlarged and displayed by the reflecting mirror section 6, the image 7b of the display area 7a visually recognized by the passenger swells around the center as shown in FIG. 3D. There was a problem that it was distorted into a barrel shape.

[0019] Based on the conceptual diagrams of Figs. 3A to 3C, the cause of the barrel-shaped distortion will be described.

 In FIG. 3A or 3B, 6 ′ is a concave mirror corresponding to the reflecting mirror section 6, and 7a ′ is a display surface corresponding to the display area 7a.

[0021] L is the optical axis of the concave mirror 6 ', C is the center of curvature of the concave mirror 6', F is the focal point of the concave mirror 6 ', Q,

R, R 'and Q' are the corners of the display surface 7a ', and P represents the center point of the display surface 7a'.

In the vehicular display device 3 of the conventional example, as shown in FIG. 3B, the display surface 7a ′ is positioned on the concave mirror 6 ′ side of the focal point F, so that the display surface 7a ′ of the concave mirror 6 ′ The image becomes a virtual image.

[0023] Generally, if the radius of curvature of the concave mirror is R, the focal length f of the concave mirror is given by f = R / 2, where the distance between the object (light source) and the concave mirror is a, and the magnification of the image by the concave mirror is m. , M is known to be given by m = f / I a -f I.

[0024] That is, the closer the object (light source) is to the focal point, the greater the magnification of the image. In the surrounding area, the magnification of the image increases as the object (light source) moves away from the concave mirror.

[0025] Therefore, for each point on the display surface 7a ', the magnification increases as the distance between the point on the display surface 7a' and the concave mirror 6 'increases.

[0026] As shown in FIG. 3C, the distance a between each corner Q, R, R ', Q' of the display surface 7a 'and the concave mirror 6' is the center point P of the display surface 7a 'and the concave mirror 6'. Corners Q, R, R ', Q

 1

 The magnification m of the image of 'is smaller than the magnification m of the image of the center point P.

 twenty one

 For this reason, as shown in FIG. 3D, the image viewed from the occupant in the display area 7a is an image distorted in a barrel shape with a smaller magnification near the corner than the magnification near the center.

Therefore, an object of the present invention is to provide a reflection-type vehicle display device that does not cause distortion in display even when magnified by a concave mirror.

 Means for solving the problem

[0029] In order to achieve the above object, in one embodiment of the present invention, a display device unit having at least a display body for displaying information related to a vehicle in a display region having a substantially rectangular shape in plan view, and facing the display device unit. A concave mirror portion that is disposed on the front side of the vehicle and reflects the light displayed in the display area so as to be enlarged and displayed to an occupant of the vehicle, and the vehicle display provided on the instrument panel of the vehicle The display body is curved in a direction along the longitudinal direction of the display area corresponding to the shape of the reflecting surface of the concave mirror portion, and the center of curvature of the concave mirror portion is located on the center of curvature of the display body. Thus, the vehicle display device in which the concave mirror portion and the display body are arranged is characterized.

 The invention's effect

 [0030] In the vehicle display device of the present invention configured as described above, the display body is curved corresponding to the shape of the reflecting surface of the concave mirror portion, and the center of curvature of the concave mirror portion is on the center of curvature of the display body. The display area is curved along a concentric sphere centered on the center of curvature of the reflecting surface of the concave mirror, and the distance from each point on the display area to the concave mirror is almost constant. Therefore, the magnification of the image of each point on the display area is almost constant when viewed from the passenger.

For this reason, the shape of the display area enlarged and displayed for the occupant becomes a substantially rectangular shape. This Therefore, the appearance of the image of the display area viewed from the passenger is good.

Brief Description of Drawings

 FIG. 1 is a partial perspective view of a vehicle instrument panel according to a conventional example.

FIG. 2A is a perspective view of a conventional vehicle display device.

2B] is a partial perspective view of the display device section viewed from the direction of arrow A1 in FIG. 2A. 3A] It is a conceptual diagram for explaining the problems of the conventional example, and is a perspective view showing a concave mirror and a display surface.

 FIG. 3B is a side view as seen from the direction of arrow A2 in FIG. 3A.

 FIG. 3C is a top view seen from the direction of arrow A3 in FIG. 3A.

3D] is an image of the display area viewed from the passenger side.

 FIG. 4 is a partial perspective view of an instrument panel of a vehicle according to the present invention.

5A] is a perspective view of the vehicle display device of the present invention.

 FIG. 5B is a partial perspective view of the display unit viewed from the direction of arrow A4 in FIG. 5A.

 FIG. 6A is a conceptual diagram for explaining operational effects of the vehicle display device according to the first embodiment, and is a perspective view showing a concave mirror and a display surface.

 FIG. 6B is a top view seen from the direction of arrow A5 in FIG. 6A.

6C] is an image of the display area viewed from the passenger side.

 FIG. 7A is a conceptual diagram illustrating a vehicle display device according to Embodiment 2, and is a top view showing a concave mirror and a display surface.

Fig. 7B] A view of the image of the display area before correction from the passenger side.

7C] is a front view showing the shape of the display area.

FIG. 7D] is an image of the display area after correction viewed from the passenger side.

 FIG. 8A is a perspective view of a vehicle display device according to Embodiment 3 of the present invention.

 FIG. 8B is a partial perspective view of the display unit viewed from the direction of arrow A3 in FIG. 8A.

 FIG. 9 is an exploded perspective view showing an internal structure of a display device section according to Embodiment 3.

10] An exploded perspective view of the movable frame according to the third embodiment.

FIG. 11A] is a top view of the display unit according to the third embodiment.

[FIG. 11B] FIG. 11B is a diagram showing a state in which the movable frame is moved from the state of FIG. 11A in the direction of arrow A4. FIG. 12A is a conceptual diagram for explaining operational effects of the vehicle display device, and is a perspective view showing a concave mirror and a display surface.

 FIG. 12B is a top view at the time of standard magnification display as viewed from the direction of arrow A5 in FIG. 12A. Fig. 12C] is a top view when displaying a reduced magnification.

FIG. 12D is a top view when displaying an enlarged magnification.

13A] This is a view of the image in the display area as seen from the occupant side, and represents the image when the reduced magnification is displayed.

 FIG. 13B shows an image at the time of standard magnification display.

 FIG. 13C shows an image when the magnification is displayed.

Explanation of symbols

11 Instrument panel

 13 Vehicle display device

 15 Display unit

 16 Reflector (concave mirror)

 17 Indicator

 17a Display area

 19 Movable frame (display body movable frame)

 20 Indicator

 20a Display area

 20C Longitudinal center of the display

 20E Both ends of the display body in the longitudinal direction

 21 Cam part

 24 Cam follower

 30 housing

 30a Window

 31 lid

 C "center of curvature of display, reflector

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, the present invention will be described based on examples of embodiments according to the present invention. Example 1

[0035] <Configuration>

 In FIG. 4, 11 is an instrument panel of a vehicle, 12 is a vehicle information display section, 12a is a translucent cover of the vehicle information display section 12, and 13 is a vehicle display device of the present embodiment constituting the vehicle information display section 12. is there.

[0036] The vehicle information display unit 12 displays information about the vehicle such as the speed of the vehicle and the rotational speed of the engine.

 [0037] The vehicle display device 13 is provided on the instrument panel 11, and includes a translucent cover 1

Located on the back side of 2a.

[0038] The vehicle display device 13 is mainly made of resin, and as shown in FIG.

4, a display device section 15, and a reflecting mirror section 16.

The casing 14 has openings in the vehicle front-rear direction.

 [0040] A display device portion 15 is provided on the lower wall 14a on the vehicle rear side of the casing 14, and a reflecting mirror portion 16 is provided on the vehicle front side so as to close the opening.

 [0041] The reflecting mirror portion 16 has a shape that forms a part of a concave mirror, and has a reflecting surface on the vehicle rear side.

 The reflecting mirror unit 16 is positioned on the vehicle front side so as to face the display device unit 15, and is arranged so that the display device unit 15 is positioned on the optical axis of the reflecting mirror unit 16. .

As shown in FIG. 5B, the display device section 15 has a substantially rectangular parallelepiped appearance.

[0044] A display body 17 having a substantially rectangular shape in plan view is provided on the vehicle front side of the display unit 15.

The display body 17 is configured by a flexible organic EL display device, and the organic EL display device itself emits light.

[0046] The display body 17 has a substantially rectangular display area 17a. The display area 17a is based on a signal sent from a control unit (not shown)! Information about the vehicle is displayed.

[0047] The light displayed in the display area 17a is reflected by the reflecting mirror unit 16 and enlarged and displayed as a virtual image for the vehicle occupant. [0048] Therefore, the occupant can view the vehicle information such as the speed and the engine speed by looking at the vehicle information display unit 12.

The display body 17 of the present embodiment is curved in a direction along the longitudinal direction of the display area 17a corresponding to the shape of the reflecting surface of the reflecting mirror section 16.

In addition, the reflecting mirror section 16 and the display body 17 are arranged so that the center of curvature of the reflecting mirror section 16 is positioned on the center of curvature of the display body 17.

[0051] For this reason, the distance (shortest distance) from each point on the display region 17a to the reflecting mirror portion 16 is almost constant everywhere.

[0052] <Function and effect>

 Based on the conceptual diagram of FIG. 6A and FIG. 6B, the effect of the present embodiment will be described.

In FIG. 6A, 16 ′ is a concave mirror corresponding to the reflecting mirror section 16, and 17a ′ is a display surface corresponding to the display region 17a.

[0054] L 'is the optical axis of the concave mirror 16', C 'is the center of curvature of the concave mirror 16', F 'is the focal point of the concave mirror 16', and J, K, K ', J' are the angles of the display surface 17a '. P 'represents the center point of the display surface 17a'.

 In the vehicular display device 13 of the present embodiment, as shown in FIG. 6B, the display surface 17a ′ is located on the concave mirror 16 ′ side with respect to the focal point F ′, and therefore the display surface 17a by the concave mirror 16 ′. The image of 'becomes a virtual image.

 Further, in the vehicle display device 13 of the present embodiment, as shown in FIG. 6B, the distance a between each corner J, Κ, Κ ′, J ′ of the display surface 17a ′ and the concave mirror 16 ′ is It is approximately equal to the distance a between the center point P 'of the display surface 17a' and the concave mirror 16 ', and the magnification m of the image at the corners J, Κ, Κ', J 'is twice that of the image at the center point P.

 1 2

 It is almost equal to the rate m.

 1

 [0057] For this reason, as shown in FIG. 6C, the image 17b viewed from the occupant in the display area 17a has approximately the same magnification near the center and the magnification near the corner. The image is magnified evenly and the distortion is small!

In this way, the display body 17 is curved corresponding to the shape of the reflecting surface of the reflecting mirror section 16, and the center of curvature of the reflecting mirror section 16 is disposed on the center of curvature of the display body 17. Therefore, the display area 17a is curved along a concentric sphere centered on the center of curvature of the reflecting surface of the reflecting mirror part 16. In addition, the distance from each point on the display area 17a to the reflecting mirror part 16 is substantially constant.

Accordingly, the magnification of the image of each point on the display area 17a as viewed from the occupant is substantially constant, and an image of the substantially rectangular display area 17a with less distortion as viewed from the occupant can be obtained. On the other hand, the display area 17a enlarged and displayed has a substantially rectangular shape.

[0060] For this reason, the image of the display area 17a viewed from the occupant power is good.

 Example 2

 [0061] The second embodiment will be described with a focus on the differences from the first embodiment, and the description of the same or similar portions will be omitted. Also, with respect to the reference numerals, the same reference numerals are assigned to parts corresponding to those in the first embodiment.

<Configuration>

 In the vehicular display device 13 of the second embodiment, the display body 17 is curved in the direction along the longitudinal direction of the display area 17a corresponding to the shape of the reflecting surface of the reflecting mirror section 16, and the center of curvature of the display body 17 is The reflector part 16 is arranged so as to be located on the reflector part 16 side from the center of curvature of the reflector part 16.

 [0063] That is, as shown in the conceptual diagram of FIG. 7A, the display surface 17a 'is curved corresponding to the concave mirror 16', and the center of curvature C "of the display surface 17a 'is the center of curvature C of the concave mirror 16'. 'More concave mirror 16, arranged to be located on the side! /

 [0064] For this reason, the center point P 'force of the display area 17a is also displayed compared to the distance a to the reflector section 16.

 1

 Since the distance a from each corner J, Κ, Κ ', J' of the region 17a to the reflecting mirror 16 becomes longer, the corner J

 Three

 , Κ, Κ ', J's image magnification is larger than that near the central point P'

When 7a has a substantially rectangular shape, as shown in FIG. 7B, the shape of the image 17b of the display region 17a viewed from the passenger is a substantially pincushion shape.

Therefore, as shown in FIG. 7C, by forming the display region 17a in a substantially barrel shape, the image 17b of the display region 17a viewed from the occupant becomes a substantially rectangular shape as shown in FIG. 7D. Correct to.

<0066> <Effect>

The display body 17 is curved in a direction along the longitudinal direction of the display area 17a corresponding to the shape of the reflecting surface of the reflecting mirror section 16, and the center of curvature of the display body 17 is more reflective than the center of curvature of the reflecting mirror section 16. The display area 17a is formed in a substantially barrel shape in a state of being arranged on the 16 side. Therefore, as shown in FIG. 7D, the image 17b of the display area 17a viewed from the passenger is substantially rectangular.

[0067] For this reason, the image of the display area 17a viewed from the occupant power is good.

 As described above, the first embodiment and the second embodiment of the embodiment according to the present invention have been described in detail with reference to the drawings, but the specific configuration is not limited to this embodiment, and the present invention is not limited to this embodiment. Do not depart from the gist

Design changes of V and degree are included in the present invention.

[0069] In Example 1 and Example 2, an organic EL display is used as the display body 17, but the display body 17 is not limited to an organic EL display. For example, a plasma display may be used.

 [0070] In the first and second embodiments, the display of the combination meter is used as an example of the display of the display body 17, but the display is not limited to the combination meter. For example, a rear view monitor that displays the rear of the vehicle on the vehicle information display unit 12 may be used.

 Example 3

[0071] <Configuration>

 First, the configuration will be described. Since the configuration shown in FIG. 4 is the same as that of the first and second embodiments, the description thereof is omitted here.

As shown in FIG. 8B, the display device unit 15 according to Example 3 of the present invention includes a housing 30 and a lid 3.

1 and a window 30a is provided on the front side of the housing 30 of the vehicle.

As shown in FIG. 9, a movable frame body 19 is provided inside the display device section 15, and the movable frame body 19 is movable along the optical axis direction of the reflecting mirror section 16 shown in FIG. 8B. It has become.

A display body 20 is held on the movable frame body 19.

 [0075] The display body 20 is composed of a flexible organic EL display device, and the organic EL display device itself emits light.

As shown in FIG. 10, the display body 20 has a display area 20a having a substantially rectangular shape in plan view. The display area 20a is based on a signal sent from a control unit (not shown)! / Information about the vehicle such as speed and speed is displayed.

[0077] The light displayed in the display region 20a is reflected by the reflecting mirror unit 16 shown in FIG. It is enlarged and displayed as a virtual image for the vehicle occupant.

Therefore, the occupant can view the vehicle information such as the speed and the engine speed by looking at the vehicle information display unit 12.

[0079] As shown in FIG. 9, the housing 30 of the display device unit 15 includes a bottom wall 30b, a front side wall 30c, and side walls 30d and 30d.

[0080] The front side wall 30c is curved along the longitudinal direction corresponding to the reflecting surface of the reflecting mirror section 16.

[0081] Sliding grooves 30e and 30e are provided on the inner side surfaces of the side walls 30d and 30d so as to face each other at substantially the center position in the vertical direction.

[0082] Cam portions 21 and 21 extend inward and opposite to each other at the upper portions of the sliding grooves 30e and 30e.

[0083] Cam 21 (May! /, Has cam surfaces 21a, 21a facing each other so that the cam surfaces 21a, 2 la gradually approach each other as they move away from the front side wall 30c. It is a curved surface.

 As shown in FIG. 10, the movable frame body 19 is composed of a frame body 22 and a substantially arcuate support portion 23.

 The frame body 22 has a bottom wall 22a, a rear end wall 22b, side walls 22c, 22c, and a front end wall 22d.

 [0086] The front end wall 22d is provided with a notch 22e that exposes the display region 20a of the display body 20 so as to face the window 30a of the display unit 15.

[0087] The bottom wall 22a, the rear end wall 22b, the side walls 22c and 22c, and the front end wall 22d form a receiving space 22g for receiving the display body 20.

[0088] The rear end wall 22b and the front end wall 22d are curved along the longitudinal direction corresponding to the reflecting surface of the reflecting mirror portion 16, and the curvature radius of the rear end wall 22b is smaller than the curvature radius of the front end wall 22d. Have

Therefore, in the receiving space 22g, both end portions in the longitudinal direction of the frame body 22 are wider in the optical axis direction than the central portion in the longitudinal direction.

[0090] As shown in FIG. 11A or FIG. 11B, when the display body 20 is accommodated in the receiving space 22g of the frame body 22 and the support portion 23 is attached, the longitudinal central portion 20C of the display body 20 becomes the rear end wall. In 22b It is supported by the central portion 22bC and the central portion 23C of the support portion 23.

On the other hand, in the receiving space 22g, both longitudinal ends of the frame body 22 are wider in the optical axis direction than the central portion in the longitudinal direction. Therefore, both longitudinal ends 20E and 20E of the display body 20 are The ability to squeeze in the direction of the optical axis S

As shown in FIG. 10, on the side walls 22c and 22c of the frame body 22, sliding ribs 22f and 22f extend on the outer surface in the optical axis direction.

[0093] The sliding ribs 22f, 22f are slidably fitted in sliding grooves 30e, 30e provided on the inner side surfaces of the side walls 30d, 30d, respectively.

For this reason, the movable frame 19 is movable in the optical axis direction.

In the vicinity of both sides in the longitudinal direction of the front end surface of the support portion 23, bearing portions 23a and 23a are provided, respectively.

 [0096] Cam follower portions 24, 24 are rotatably attached to the bearing portions 23a, 23a, respectively.

 [0097] The cam follower portion 24 includes a plate portion 24a, a rotating shaft 24b, a display body pressing rod 24c, and a roller portion 24d.

[0098] The plate portion 24a is substantially L-shaped, and a rotating shaft 24b extends downward from a corner portion of the plate portion 24a.

 [0099] The display body pressing rod 24c extends downward from one end of the plate portion 24a, and the roller part 24d is provided on the upper end of the other end of the plate portion 24a.

[0100] The roller parts 24d, 24d abut against the cam surfaces 21a, 21a of the cam parts 21, 21 and the movable frame 1

When the 9 is moved in the optical axis direction, the roller portions 24d and 24d roll while being in contact with the cam surfaces 21a and 21a.

[0101] <Function and effect>

 Fig.1A and Fig. 示 す ΙΒί As shown, the rollers 24d, 24di, cams 21 are in contact with the cam surfaces 21a, 21a, and when the movable frame 19 is moved in the optical axis direction, the rollers The parts 24d and 24d roll while contacting the cam surfaces 21a and 21a, respectively.

[0102] When the movable frame 19 is moved away from the window 30a, the rollers 24d and 24d are respectively connected to the cam 21.

, 21 to follow the shape of the cam follower parts 24, 24 The display body pressing rods 24c and 24c of the first and second parts 24 and 24 press the longitudinal ends 20E and 20E of the display body 20 from the front end face side, respectively.

[0103] At this time, the receiving space 22g has both longitudinal ends of the display body 20 wider in the optical axis direction than the longitudinal central portion, and the central portion 20C of the display body 20 is the central portion 23C of the support portion 23. And the center portion 22bC of the rear end wall 22b, the both end portions 20E and 20E of the display body 20 are curved backward.

 [0104] The amount of curvature (the curvature of the reflector) is such that the movable frame body 19 moves away from the window 30a.

, And increases with the amount of movement.

[0105] When the movable frame 19 is brought closer to the window 30a, the pressure on the rollers 24d and 24d is gradually released, and the pressure on the both ends 20E and 20E of the display body 20 by the display body pressing rods 24c and 24c. Is gradually released, and the display body 20 returns to its pre-pressed shape due to the elasticity of the display body 20 itself.

[0106] By appropriately adjusting the shapes of the opposing cam surfaces 21a, 21a, the curvature of the display body 20 can be changed to a desired curvature according to the amount of movement of the movable frame body 19.

In the vehicle display device 13 according to the third embodiment of the present invention, the movable frame body is used to change the display magnification.

 The shapes of the opposing cam surfaces 21a and 21a are set so that the center of curvature of the display 20 always coincides with the center of curvature of the reflecting mirror 16 even when 19 is moved in the optical axis direction of the reflecting mirror 16. .

Based on the conceptual diagrams of FIGS. 12A to 12D, operational effects of the present embodiment will be described.

In FIGS. 12A to 12D, 16 ′ is a concave mirror corresponding to the reflecting mirror section 16, and 20a ′ is a display surface corresponding to the display area 20a.

[0110] L 'is the optical axis of the concave mirror 16', C '' is the center of curvature of the concave mirror 16 ', F' is the focal point of the concave mirror 16 ', and J, K, K' and J 'are the display surface 20a'. It is a corner, and P 'represents the center point of the display surface 20a'.

 [0111] In the vehicle display device 13 of the present embodiment, as shown in Figs. 12A to 12D, the display surface 20a 'is located on the concave mirror 16' side with respect to the focal point F '. The image of face 20a 'becomes a virtual image.

[0112] In the vehicle display device 13 of the present embodiment, the display surface 20a 'may be moved from the position of the standard magnification display shown in Fig. 12B to the position of the reduction magnification display shown in Fig. 12C, or the display surface 20a Even if 'is moved to the magnification display position shown in Fig. 12D, each corner J, Κ, K of display surface 20a' The distance a between ', J' and the concave mirror 16 'is the distance a between the center point P' of the display surface 20a 'and the concave mirror 16'

 2 1 It is almost equal, and the magnification of the image at the corners J, Κ, Κ ', J' is almost equal to the magnification of the image at the center point Ρ.

 [0113] For this reason, the standard magnification display image 20b shown in FIG. 13B, the reduced magnification display image 20b shown in FIG. 13A, and the enlarged magnification display image 20b shown in FIG. 13C are substantially rectangular. Become a statue.

 [0114] In this way, since the display body 20 has the display body movable mechanism that allows the display body 20 to move along the optical axis direction of the reflecting mirror section 16, the image 20b of the display area 20a viewed from the occupant. You can change the enlargement ratio.

 [0115] In addition, since the curvature adjusting mechanism that matches the center of curvature of the display body 20 and the center of curvature C "of the reflecting mirror section 16 is provided, the reflecting mirror section can be changed even if the enlargement ratio of the display area 20a is changed. The distance between the 16 reflecting surfaces and the display area 20a of the display body 20 is almost equal to each point on the display area 20a, and the magnification is almost equal to each point on the display area 20a. The image 20b in the display area 20a viewed from the side is less distorted and looks good.

 [0116] In general, the shape and size of the vehicle information display unit 12 differ depending on the vehicle type on which the vehicle display device 13 is mounted, and it is necessary to change the display magnification of the display body 20 for each vehicle type. If the vehicle display device 13 of the present invention is used, the device can be used in common regardless of the vehicle type.

[0117] Furthermore, since it is possible to reduce the size of the display body 20 with respect to the size of the display image that is actually displayed, it is possible to reduce the manufacturing cost of the display body 20, and This can save power.

 [0118] While the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to this embodiment and does not depart from the gist of the present invention. Some degree of design change is included in the present invention.

[0119] In Example 3, the force indicator 20 using an organic EL display as the display 20 is not limited to the organic EL display. For example, a plasma display may be used.

[0120] In the third embodiment, the display of the combination meter is used as an example of the display displayed by the display body 20, but the display is not limited to the combination meter. Example For example, a rear view monitor that displays the rear of the vehicle may be displayed.

 Claimed the priority of the present invention (based on the Japanese Patent Application No. 2006-292254 filed October 27, 2006 and the Japanese Patent Application No. 2006-292255 filed October 27, 2006) The contents of the application, including the specification, drawings and claims of the application, are hereby incorporated by reference in their entirety.

Claims

The scope of the claims  [1] A display device unit having at least a display body for displaying information on the vehicle in a display area having a substantially rectangular shape in plan view;  A concave mirror that is disposed on the front side of the vehicle facing the display device and reflects the light displayed in the display area so as to be enlarged and displayed to an occupant of the vehicle. A display device for a vehicle provided on a panel, wherein the display body is curved in a direction along a longitudinal direction of the display area corresponding to a reflection surface shape of the concave mirror portion, and a center of curvature of the concave mirror portion is the display body The vehicle display device, wherein the concave mirror portion and the display body are disposed so as to be positioned on the center of curvature of the vehicle.  [2] The display area has a substantially barrel shape with the concave mirror portion and the display body arranged such that the center of curvature of the display body is positioned closer to the concave mirror portion side than the center of curvature of the concave mirror portion. 2. The vehicular display device according to claim 1, wherein the vehicular display device is formed! /.  [3] A display body movable mechanism that enables the display body to move along the optical axis direction of the concave mirror part;  A curvature adjusting mechanism that matches the center of curvature of the display body with the center of curvature of the concave mirror portion by changing a curved shape of the display body as the display body moves. The vehicle display device according to claim 1. [4] A display body movable mechanism that enables the display body to move along the optical axis direction of the concave mirror portion;  A curvature adjusting mechanism that matches the center of curvature of the display body with the center of curvature of the concave mirror portion by changing a curved shape of the display body as the display body moves. The vehicle display device according to claim 2. [5] The curvature adjusting mechanism includes cam portions that extend in the optical axis direction of the concave mirror portion and that face each other across the optical axis;  A display body movable frame that holds the display body, supports a central portion in the longitudinal direction of the display body, and allows the display body to move in the optical axis direction; The display body movable frame is provided on both ends in the longitudinal direction, and follows the shape of the cam portion. The cam follower portion that changes the curvature of curvature of the display body by bending both ends in the longitudinal direction of the display body to bend the display body. Vehicle display device.  The curvature adjusting mechanism includes cam portions that extend in the optical axis direction of the concave mirror portion and are provided opposite to each other across the optical axis;  A display body movable frame that holds the display body, supports a central portion in the longitudinal direction of the display body, and allows the display body to move in the optical axis direction;  The curvature of the display body is provided by bending the display body by following the shape of the cam portion provided at both ends in the longitudinal direction of the display body movable frame and pressing the both ends in the longitudinal direction of the display body. 5. The vehicular display device according to claim 4, wherein the vehicular display device includes a cam follower portion to be changed.