Vehicle display device

Abstract

The present invention provides a vehicle display device capable of achieving three-dimensional expression. The vehicle display device (1) comprises: a box (2) mounted on a vehicle, having a light-shielding outer wall (20) forming a storage space (23), and a slit (24) formed on the outer wall; a three-dimensional display surface (40) arranged in the storage space and forming a real image (7) based on display light (DL); a projection unit (3) arranged in the box and projecting display light toward the display surface; and a reflection unit (5) arranged outside the box and having a reflection surface (51) reflecting the real image toward an eye point EP of the vehicle, the shape of the reflection surface being a concave shape so that the light (70) of the real image intersects in the optical path (6) from the display surface via the slit toward the reflection surface.

Description

Technical Field

[0001] The present invention relates to a display device for a vehicle. Background Art

[0002] Conventionally, there are display devices for vehicles. Patent Document 1 discloses a head-up display and a dimming mechanism that can improve the visibility of a displayed image.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2002-104017 Summary of the invention

[0006] Technical problem that the invention aims to solve

[0007] In vehicle display devices, it is desirable to realize three-dimensional expression. For example, if a passenger can visually recognize a virtual image having a three-dimensional sense based on a real image of a three-dimensional shape, the expression can be improved.

[0008] An object of the present invention is to provide a vehicle display device capable of realizing three-dimensional expression.

[0009] Technical solutions to the problem

[0010] The vehicle display device of the present invention is characterized in that it comprises: a box, which is mounted on a vehicle and has an outer wall with a light-shielding property that forms a storage space, and a slit is formed on the outer wall; a three-dimensional display surface, which is arranged in the storage space and forms a real image based on display light; a projection unit, which is arranged in the box and projects the display light onto the display surface; and a reflection unit, which is arranged outside the box and has a reflection surface that reflects the real image toward the eye point of the vehicle, and the shape of the reflection surface is a concave shape that makes the light of the real image intersect in the optical path from the display surface via the slit toward the reflection surface.

[0011] Effects of the Invention

[0012] In the vehicle display device of the present invention, the shape of the reflective surface of the reflective portion is a concave shape that allows the light of the real image to intersect in the optical path from the display surface to the reflective surface via the slit. Therefore, the opening width of the slit can be reduced to darken the storage space, allowing the user to visually recognize a three-dimensional and clear virtual image. According to the vehicle display device of the present invention, the effect of achieving a three-dimensional expression is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1It is a diagram showing the arrangement of a vehicle display device according to an embodiment.

[0014] Figure 2 It is a diagram showing a configuration of a vehicle display device according to an embodiment.

[0015] Figure 3 It is a top view of the vehicle display device according to the embodiment.

[0016] Figure 4 It is a diagram for explaining the optical path of the vehicle display device according to the embodiment.

[0017] Figure 5 It is a diagram for explaining the light shielding function of the reflection portion according to the embodiment.

[0018] Figure 6 It is a diagram for explaining the light shielding function of the reflection portion according to the embodiment.

[0019] Figure 7 It is a diagram of a vehicle display device according to a modified example of the embodiment.

[0020] Figure 8 It is a cross-sectional view of a slit according to a modification of the embodiment.

[0021] Fig. 9 It is a diagram of a vehicle display device according to a modified example of the embodiment.

[0022] Fig.10 It is a diagram of a vehicle display device according to a modified example of the embodiment.

[0023] Explanation of symbols

[0024] 1: Vehicle display device

[0025] 2: Cabinet

[0026] 3: Projection Department

[0027] 4: Screen

[0028] 5: Reflection part

[0029] 6: Light Path

[0030] 7: Real Image

[0031] 20: Outer wall

[0032] 21: main body, 21a: bottom wall, 21b: side wall, 21c: wall surface, 21d: front end wall

[0033] 21e: Opening

[0034] 22: cover, 23: storage space

[0035] 24: slit, 24b: left end, 24c: right end, 24f: front end, 24r: rear end

[0036] 30: box, 31: output part

[0037] 40: display surface, 40d: lower part, 40m: center part, 40u: upper part

[0038] 41: first display surface, 42: second display surface, 43: rotation axis, 44: first display surface

[0039] 45: Second display surface

[0040] 50: main body, 50a: concave surface, 50b: left end, 50c: right end

[0041] 50d: lower end, 50u: upper end,

[0042] 51: Reflection surface, 51d: Lower part, 51m: Center part, 51u: Upper part

[0043] 70: Light of real image, 71, 72, 73: Light

[0044] 100: Vehicles

[0045] 101: windshield, 101b: left end, 101c: right end

[0046] 101d: lower end, 101u: upper end

[0047] 102: instrument panel, 102a: upper surface

[0048] 200: Passengers

[0049] DL: Display Light, EP: Eye Point

[0050] L: front and rear direction of the vehicle, W: width direction of the vehicle, H: up and down direction of the vehicle

[0051] VLb: imaginary line on the left, VLc: imaginary line on the right

[0052] VLd: imaginary line on the lower side, VLu: imaginary line on the upper side

[0053] Wd1: opening width DETAILED DESCRIPTION

[0054] Hereinafter, the vehicle display device involved in the embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the present invention is not limited to the embodiment. In addition, the constituent elements of the following embodiment include elements that can be easily thought of by a person skilled in the art or substantially the same elements.

[0055] [Implementation Method]

[0056] Reference Figures 1 to 6 , an embodiment is described. This embodiment relates to a display device for a vehicle. Figure 1 is a diagram showing the configuration of a vehicle display device according to an embodiment, Figure 2 is a diagram showing a structure of a vehicle display device according to an embodiment, Figure 3 is a top view of a vehicle display device according to an embodiment, Figure 4 is a diagram for explaining an optical path of a vehicle display device according to an embodiment, Figure 5 and Figure 6 It is a diagram for explaining the light shielding function of the reflection portion according to the embodiment.

[0057] like Figure 1 and Figure 2 As shown, the vehicle display device 1 according to the present embodiment is mounted on a vehicle 100 such as a car. The vehicle 100 may be an electric vehicle (EV), a hybrid electric vehicle (HEV), or a plug-in hybrid electric vehicle (PHEV). The vehicle display device 1, for example, serves as an instrument device of the vehicle 100 to display the driving speed of the vehicle 100. The vehicle display device 1 may also be used as a part of an instrument device.

[0058] The vehicle display device 1 includes a housing 2, a projection unit 3, a screen 4, and a reflection unit 5. The housing 2 includes a light-shielding outer wall 20. The illustrated outer wall 20 includes a main body 21 and a cover 22. The main body 21 includes a bottom wall 21a and a side wall 21b. The shape of the bottom wall 21a is, for example, a flat plate shape. The side wall 21b is erected from the edge of the bottom wall 21a toward the upper side of the vehicle vertical direction H. The shape of the side wall 21b is cylindrical, for example, a square cylindrical shape. The side wall 21b is a peripheral wall that surrounds the bottom wall 21a throughout the entire circumference. The lower end of the side wall 21b is closed by the bottom wall 21a, and the upper end of the side wall 21b is open.

[0059] The cover 22 is a component that closes the upper end of the side wall 21b. The cover 22 is mounted on the main body 21 to form a storage space 23. The storage space 23 is a closed space, which is a dark room surrounded by the light-shielding outer wall 20. The shape of the cover 22 is, for example, a flat plate. A slit 24 is formed in the cover 22. The slit 24 penetrates the cover 22 along the thickness direction of the cover 22. The slit 24 is an elongated through hole that connects the space above the box body 2 with the storage space 23. Figure 3 As shown, the slit 24 of this embodiment extends along the vehicle width direction W. Figure 2 As shown, the opening width Wd1 of the slit 24 is the width of the slit 24 in the vehicle front-rear direction L.

[0060] like Figure 1As shown, the cover 22 constitutes the upper surface 102a of the instrument panel 102. In other words, the upper surface of the cover 22 is located on the same plane as the upper surface 102a of the instrument panel 102. For example, the cover 22 is configured to close an opening formed in the instrument panel 102. The main body 21 of the box 2 is accommodated in the space formed by the instrument panel 102.

[0061] The screen 4 is arranged in the storage space 23. The illustrated screen 4 is fixed to the inner surface of the side wall 21b. More specifically, the screen 4 is arranged on the wall surface 21c on the rear end side of the side wall 21b in the vehicle front-rear direction L. The wall surface 21c is an inclined surface inclined in an obliquely upward manner. The screen 4 has a three-dimensional display surface 40. The screen 4 is a reflective screen that diffuses light on the display surface 40. The illustrated display surface 40 is in a hemispherical shape. The display surface 40 faces the front side in the vehicle front-rear direction L. The illustrated display surface 40 is directly opposite to the slit 24.

[0062] The projection unit 3 is arranged in the box 2. The illustrated projection unit 3 is fixed to the side wall 21b. In more detail, the projection unit 3 is arranged on the wall 21d at the front end of the side wall 21b in the vehicle front-rear direction L. The projection unit 3 has a box 30 and an output unit 31. The box 30 is fixed to the outer side of the wall 21d at the front end. The wall 21d at the front end is provided with an opening 21e. The box 30 is fitted with the side wall 21b in a manner of closing the opening 21e, for example. The box 30 has a light-shielding property and closes the opening 21e in a manner that external light does not enter the storage space 23. In addition, the box 30 of the projection unit 3 can also be integrally formed with the main body 21.

[0063] The output unit 31 is a device that outputs the display light DL. The output unit 31 is, for example, a laser projector that scans a laser on the display surface 40. The output unit 31 may also be a liquid crystal display device that projects an image displayed on a liquid crystal panel onto the display surface 40. In addition, the method by which the output unit 31 outputs the display light DL is not limited to lasers and liquid crystal panels.

[0064] The output unit 31 projects the display light DL toward the display surface 40. The display light DL forms a real image 7 on the display surface 40. The real image 7 formed is an arbitrary image, for example, an image showing information related to the vehicle 100. The information related to the vehicle 100 includes, for example, the driving speed, driving mode, and driving distance of the vehicle 100. The real image 7 formed on the display surface 40 may also be an image that provides information, calls attention, or warns passengers from the vehicle 100. The real image 7 may also include a route guidance image for a car navigation system.

[0065] The reflecting unit 5 is arranged outside the housing 2. The reflecting unit 5 has a reflecting surface 51 that reflects the real image 7 formed on the display surface 40 toward the eye point EP of the vehicle 100. The eye point EP is a position assumed to be the eye position of the passenger 200, or the actual eye position of the passenger 200. The actual eye position is detected by a detection unit such as a camera mounted on the vehicle 100, for example.

[0066] The reflective portion 5 has a main body 50 with light-shielding properties. The main body 50 is, for example, a plate-shaped component molded from a black or dark-colored resin. The main body 50 is supported by, for example, the housing 2. The vehicle display device 1 may also have a mechanism for adjusting the inclination angle of the main body 50 according to the position of the eye point EP. The main body 50 has a concave surface 50a opposite to the eye point EP. The concave surface 50a faces the rear of the vehicle and faces the lower side of the vehicle up-down direction H. The cross-sectional shape of the illustrated main body 50 is a curved shape with a concave shape on the side opposite to the eye point EP. In addition, Figure 1 The cross section shown is a cross section perpendicular to the vehicle width direction W, for example.

[0067] The reflecting surface 51 is disposed on the concave surface 50a of the main body 50. The reflecting surface 51 is formed on the concave surface 50a by, for example, coating, vapor deposition, etc. The reflecting surface 51 may also be the surface of a component different from the main body 50. In other words, a reflector having the reflecting surface 51 may be mounted on the main body 50. The reflecting surface 51 is configured to have a high reflectivity.

[0068] like Figure 2 As shown in FIG. 1 , the reflecting surface 51 of the reflecting portion 5 is arranged on the optical path 6 connecting the display surface 40 and the slit 24. In addition, the reflecting surface 51 is arranged so as to reflect the real image 7 of the display surface 40 toward the eye point EP. The reflecting surface 51 shown in the example is inclined so that the upper portion 51u of the reflecting surface 51 is located behind the lower portion 51d of the reflecting surface 51 in the vehicle front-rear direction L. The inclination angle of the reflecting surface 51 is set according to the position of the display surface 40, the position of the slit 24, the position of the eye point EP, and the like.

[0069] like Figure 1 As shown, the shape of the reflecting surface 51 is a concave shape that is curved in such a manner that the light 70 of the real image 7 crosses the optical path 6. The optical path 6 is an optical path from the display surface 40 to the reflecting surface 51 via the slit 24. The display light DL projected onto the display surface 40 is diffused on the display surface 40 to form the real image 7. A portion of the diffused light passes through the slit 24 and is reflected toward the eye point EP by the reflecting surface 51. The user visually recognizes a virtual image based on the real image 7 of the three-dimensional shape by the reflected light reflected by the reflecting surface 51. The virtual image is formed at a position in front of the reflecting surface 51.

[0070] like Figure 4As shown, light 71 diffused at the lower portion 40d of the display surface 40 and passed through the slit 24 is reflected toward the eye point EP by the upper portion 51u of the reflective surface 51. On the other hand, light 72 diffused at the upper portion 40u of the display surface 40 and passed through the slit 24 is reflected toward the eye point EP by the lower portion 51d of the reflective surface 51. In addition, light 73 diffused at the central portion 40m of the display surface 40 and passed through the slit 24 is reflected toward the eye point EP by the central portion 51m of the reflective surface 51.

[0071] The reflecting surface 51 is designed so that the light 71, 72, and 73 intersect at the position XP. For example, the inclination angle of the upper portion 51u of the reflecting surface 51 is an angle at which the light 71 that passes through the slit 24 among the light diffused at the lower portion 40d of the display surface 40 is reflected toward the eye point EP. The inclination angle of the lower portion 51d of the reflecting surface 51 is an angle at which the light 72 that passes through the slit 24 among the light diffused at the upper portion 40u of the display surface 40 is reflected toward the eye point EP. Similarly, the inclination angle of the central portion 51m of the reflecting surface 51 is an angle at which the light 73 that passes through the slit 24 among the light diffused at the central portion 40m of the display surface 40 is reflected toward the eye point EP. The position XP at which the light 71, 72, and 73 intersect is determined by the shape of the reflecting surface 51, etc. In other words, the intersecting position XP can be adjusted according to the position and shape of the reflecting surface 51.

[0072] In this way, the shape of the reflecting surface 51 is such that the light 70 of the real image 7 intersects in the optical path 6 from the display surface 40 to the reflecting surface 51 via the slit 24. In the illustrated vehicle display device 1, the light 70 intersects in the vehicle vertical direction H. In other words, when viewed from the vehicle width direction W, the light 70 of the real image 7 intersects. By intersecting the light 70, the opening width Wd1 of the slit 24 can be reduced. In addition, the vehicle display device 1 of the present embodiment is configured so that the light 70 of the real image 7 does not intersect in the vehicle width direction W. In other words, in the optical path 6 from the display surface 40 to the reflecting surface 51, the light 70 advances in parallel without intersecting.

[0073] If the opening width Wd1 of the slit 24 is small, it is difficult for external light such as sunlight to enter the storage space 23. That is, the storage space 23 is kept dark. Therefore, the passenger can visually recognize a clear virtual image based on the real image 7 with high contrast. In addition, the real image 7 is a three-dimensional image displayed on the display surface 40 of a three-dimensional shape. Therefore, the vehicle display device 1 of this embodiment can perform a new image expression in three dimensions.

[0074] like Figure 4 As shown, the position XP where the light 70 crosses is the slit 24. That is, the light 70 of the real image 7 crosses in the space of the slit 24. Thus, by designing the reflection surface 51 so that the light 70 crosses at the slit 24, the opening width Wd1 of the slit 24 can be minimized.

[0075] In addition, as described below, the reflector 5 of this embodiment shields the slit 24 from the external light 80 that passes through the windshield 101. Figure 5 As shown in the figure, the light-shielding main body 50 is located between the windshield 101 and the slit 24, and shields the slit 24 from the windshield 101. More specifically, the upper end 50u of the main body 50 is located above the upper imaginary line VLu. The upper imaginary line VLu is a straight line connecting the rear end 24r of the slit 24 and the upper end 101u of the windshield 101. In addition, the lower end 50d of the main body 50 is located below the lower imaginary line VLd. The lower imaginary line VLd is a straight line connecting the front end 24f of the slit 24 and the lower end 101d of the windshield 101.

[0076] Therefore, the external light 80 passing through the windshield 101 toward the vehicle interior is shielded by the main body 50 of the reflector 5 and does not reach the slit 24. Therefore, the reflector 5 of this embodiment can suppress the external light 80 such as sunlight from entering the storage space 23.

[0077] In addition, if Figure 6 As shown, the reflecting portion 5 may shield the slit 24 in the vehicle width direction W. Figure 6 The left end 50b of the illustrated reflecting portion 5 is located to the left of the left imaginary line VLb. The left imaginary line VLb is a straight line connecting the left end 101b of the windshield 101 and the left end 24b of the slit 24. The right end 50c of the reflecting portion 5 is located to the right of the right imaginary line VLc. The right imaginary line VLc is a straight line connecting the right end 101c of the windshield 101 and the right end 24c of the slit 24.

[0078] As described above, the vehicle display device 1 according to the present embodiment includes a housing 2 mounted on a vehicle 100, a display surface 40, a projection unit 3, and a reflection unit 5. The housing 2 includes a light-shielding outer wall 20 that forms a storage space 23, and a slit 24 is formed in the outer wall 20. The display surface 40 is disposed in the storage space 23. The display surface 40 is a surface that forms a three-dimensional shape of a real image 7 based on the display light DL.

[0079] The projection unit 3 is disposed on the housing 2, and projects the display light DL toward the display surface 40. The reflection unit 5 is disposed outside the housing 2, and has a reflection surface 51 that reflects the real image 7 toward the eye point EP of the vehicle 100. The shape of the reflection surface 51 is a concave shape that allows the light 70 of the real image 7 to intersect in the optical path 6 from the display surface 40 to the reflection surface 51 via the slit 24. By making the light 70 intersect between the display surface 40 and the reflection surface 51, the opening width Wd1 of the slit 24 can be reduced. Therefore, it is possible to suppress the external light 80 from entering the storage space 23, and the user can visually recognize a three-dimensional and clear virtual image.

[0080] The shape of the reflecting surface 51 shown in the example is a shape that allows the light 70 of the real image 7 to intersect the slit 24. With such a structure, the opening width Wd1 of the slit 24 can be minimized.

[0081] The slit 24 of this embodiment extends in the vehicle width direction W. The shape of the reflecting surface 51 is such that the light 70 of the real image 7 crosses in the vehicle vertical direction H and does not cross in the vehicle width direction W. Therefore, the optical design of the reflecting surface 51 becomes easy.

[0082] The reflector 5 of this embodiment has light shielding properties and is located between the windshield 101 of the vehicle 100 and the slit 24. The reflector 5 shields the slit 24 from the external light 80 transmitted through the windshield 101. Therefore, the external light 80 can be effectively prevented from entering the storage space 23.

[0083] In the vehicle display device 1 according to the present embodiment, the surface of the outer wall 20 on which the slit 24 is formed constitutes the upper surface 102a of the instrument panel 102 of the vehicle 100. The reflecting portion 5 is arranged above the upper surface 102a. By locating the reflecting portion 5 above the instrument panel 102, the user can reduce the need to move his / her sight to view the instrument.

[0084] In the vehicle display device 1 of the present embodiment, there is only one reflecting portion 5 disposed on the optical path from the display surface 40 to the eye point EP. Therefore, compared with a configuration in which a plurality of reflecting portions are disposed, the number of components can be reduced. In addition, in the vehicle display device 1 of the present embodiment, it is easy to adjust the binocular parallax. For example, compared with a configuration in which the light 70 of the real image is reflected toward the eye point EP by the windshield 101, it is easier to adjust the binocular parallax.

[0085] [Modification of the embodiment]

[0086] The shape of the display surface 40 is not limited to the hemispherical shape illustrated in the embodiment. The shape of the display surface 40 is any three-dimensional shape. For example, the shape of the display surface 40 may be a shape that imitates the vehicle 100. In this case, the real image 7 may be a brake light or a turn indicator light displayed on the display surface 40 having the shape of the vehicle body. The real image 7 may also be an image showing the opening and closing status of the door. The shape of the display surface 40 is not limited to a convex shape. The shape of a part or the entirety of the display surface 40 may also be a concave shape.

[0087] The screen 4 may have a flat display surface in addition to a three-dimensional display surface. Figure 7As shown, the screen 4 may also have a three-dimensional first display surface 41 and a planar second display surface 42. In this case, the projection unit 3 projects the display light DL onto the first display surface 41 and the second display surface 42. The display light DL forms a real image 7 on the first display surface 41 and the second display surface 42, respectively.

[0088] The position XP where the light 70 of the real image 7 intersects is not limited to the inside of the slit 24. For example, the light 70 may intersect at a position closer to the display surface 40 than the slit 24, or at a position closer to the reflecting surface 51 than the slit 24.

[0089] like Figure 8 As shown, the opening width of the slit 24 may also be different on the side of the accommodation space 23 and the side of the external space. Figure 8 In the slit 24 shown, the opening width Wd2 on the exit side is narrower than the opening width Wd3 on the entrance side. In other words, the opening width Wd2 of the portion opening to the outside space is narrower than the opening width Wd3 of the portion opening to the storage space 23. Therefore, it is difficult for the external light 80 to enter the storage space 23. In the slit 24 shown in the example, the surface on the rear side of the vehicle is set as an inclined surface, so that the opening widths Wd2 and Wd3 are different. The thickness of the cover 22 is, for example, 5 [mm]. In this case, the opening width Wd2 on the upper side may be set to 6 [mm], and the opening width Wd3 on the lower side may be set to 10 [mm].

[0090] like Fig. 9 As shown, the screen 4 may also be disposed on the bottom wall 21 a. Fig. 9 The screen 4 is shown as an example and is disposed directly below the slit 24. However, the arrangement of the screen 4 is not limited to the position directly below the slit 24. For example, the screen 4 may be Fig. 9 The position shown is closer to the front or rear of the vehicle in the front-rear direction L. The reflecting unit 5 is arranged so as to be able to reflect the real image 7 formed on the screen 4 toward the eye point EP.

[0091] exist Fig. 9 In the illustrated vehicle display device 1, the output unit 31 of the projection unit 3 is disposed inside the housing 2. The output unit 31 is disposed above the screen 4, and projects the display light DL onto a display surface 40 located obliquely below.

[0092] The screen 4 may also change the shape of the display surface 40 according to the content of the projected image. Fig.10 As shown, the screen 4 may also be rotatable. Fig.10The screen 4 shown has a rotating shaft 43 connected to the display surface 40 and a motor 46 that rotates the rotating shaft 43. The rotating shaft 43 extends, for example, along the wall surface 21c. The motor 46 rotates the rotating shaft 43. The display surface 40 has a first display surface 44 and a second display surface 45. The motor 46 switches between a state in which the first display surface 44 faces the slit 24 and a state in which the second display surface 45 faces the slit 24 by rotating the rotating shaft 43.

[0093] Fig.10 The first display surface 44 and the second display surface 45 shown in the example are both convex shapes, for example, spherical shapes. The curvature of the first display surface 44 is different from the curvature of the second display surface 45. By switching the first display surface 44 and the second display surface 45 having different shapes, various image expressions can be performed. In addition, the shapes of the first display surface 44 and the second display surface 45 are arbitrary, and may be shapes different from spherical shapes, or may not be convex shapes.

[0094] The structure of the box body 2 is not limited to the structure illustrated in the embodiment. For example, the cover 22 of the above embodiment may be integral with the side wall 21b. In this case, for example, the bottom wall 21a and the side wall 21b are separate. The box body 2 may also be an upper and lower split type that is split in the middle portion in the vehicle up-down direction H.

[0095] The display surface 40 is not limited to the screen 4. In other words, the display surface 40 is not limited to a screen made for projecting an image. The display surface 40 may be, for example, the surface of a three-dimensional object. The display surface 40 may be any surface as long as it diffuses the display light DL on the display surface 40.

[0096] The contents disclosed in the above-mentioned embodiments and modifications can be implemented in combination as appropriate.

Claims

1. A vehicle display device, characterized in that: have: A box body, the box body being mounted on a vehicle and having an outer wall forming a storage space, the outer wall having a light shielding property and having a slit formed on the outer wall; A screen having a three-dimensional display surface, wherein the display surface is disposed in the accommodation space; a projection unit, the projection unit being disposed on the housing and projecting display light onto the display surface, the display light projected onto the display surface being diffused on the display surface to form a real image; as well as a reflecting portion, the reflecting portion being arranged outside the box and having a reflecting surface for reflecting the real image toward an eye point of the vehicle, The shape of the reflection surface is a concave shape that allows the light of the real image to intersect in an optical path from the display surface to the reflection surface via the slit.

2. The vehicle display device according to claim 1, wherein: The shape of the reflecting surface is such that light of the real image intersects at the slit.

3. The vehicle display device according to claim 1, wherein: The slit extends in the vehicle width direction, The shape of the reflecting surface is such that the light of the real image intersects in the vehicle vertical direction and does not intersect in the vehicle width direction.

4. The vehicle display device according to claim 2, wherein: The slit extends in the vehicle width direction, The shape of the reflecting surface is such that the light of the real image intersects in the vehicle vertical direction and does not intersect in the vehicle width direction.

5. The vehicle display device according to claim 1, wherein: The reflecting portion has a light shielding property and is located between a windshield of the vehicle and the slit to shield the slit from external light that passes through the windshield.

6. The vehicle display device according to claim 2, wherein: The reflecting portion has a light shielding property and is located between a windshield of the vehicle and the slit to shield the slit from external light that passes through the windshield.

7. The vehicle display device according to claim 3, wherein: The reflecting portion has a light shielding property and is located between a windshield of the vehicle and the slit to shield the slit from external light that passes through the windshield.

8. The vehicle display device according to claim 1, wherein: The surface of the outer wall on which the slit is formed constitutes an upper surface of an instrument panel of the vehicle. The reflecting portion is arranged on an upper side relative to the upper surface.

9. The vehicle display device according to claim 2, wherein: The surface of the outer wall on which the slit is formed constitutes an upper surface of an instrument panel of the vehicle. The reflecting portion is arranged on an upper side relative to the upper surface.

10. The vehicle display device according to claim 3, wherein: The surface of the outer wall on which the slit is formed constitutes an upper surface of an instrument panel of the vehicle. The reflecting portion is arranged on an upper side relative to the upper surface.

11. The vehicle display device according to claim 5, wherein: The surface of the outer wall on which the slit is formed constitutes an upper surface of an instrument panel of the vehicle. The reflecting portion is arranged on an upper side relative to the upper surface.

12. The vehicle display device according to claim 1, wherein: The projection unit generates an image indicating a traveling speed of the vehicle. The reflecting unit reflects the image indicating the traveling speed toward the eye point.

13. The vehicle display device according to claim 2, wherein: The projection unit generates an image indicating a traveling speed of the vehicle. The reflecting unit reflects the image indicating the traveling speed toward the eye point.

14. The vehicle display device according to claim 3, wherein: The projection unit generates an image indicating a traveling speed of the vehicle. The reflecting unit reflects the image indicating the traveling speed toward the eye point.

15. The vehicle display device according to claim 5, wherein: The projection unit generates an image indicating a traveling speed of the vehicle. The reflecting unit reflects the image indicating the traveling speed toward the eye point.

16. The vehicle display device according to claim 8, wherein: The projection unit generates an image indicating a traveling speed of the vehicle. The reflecting unit reflects the image indicating the traveling speed toward the eye point.

Images