Vehicle display device

Abstract

To provide a display device for vehicle which can realize space saving.SOLUTION: A display device 1 for vehicle includes: a display device 100 that emits display light L2 to a display surface 410 of a vehicle 400; and a main housing 300. The display device 100 includes: a display 110 which includes a display screen 111; a backlight 120 which includes an LED board 121; and a device housing 130 to which the LED board 121 is assembled. The display screen 111 is arranged so as to be inclined with respect to an optical axis L1x of emission light L1. The LED board 121 is arranged so as to be opposed to the display screen 111. The multiple LED chips 121a are arranged by gradually deviating with respect to the optical axis direction L1d along the optical axis L1x according to the inclination of the display screen 111.SELECTED DRAWING: Figure 1

Description

[Technical field]

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

[0002] For example, Patent Document 1 discloses a vehicle display device including a display, a light source that illuminates the display, and a retardation plate (λ / 4 plate or λ / 2 plate) provided for the display light emitted by the display. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 6027727 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the vehicle display device described in the above-mentioned Patent Document 1, when external light enters the housing of the device, if the display surface of the display mounted in the housing is tilted with respect to the optical axis in order to prevent the light reflected by the display surface from returning to the eyes of the occupant, the housing of the display becomes larger according to the tilt, and there is a risk that the entire vehicle display device becomes larger. Therefore, there is room for further improvement in terms of mountability in a vehicle.

[0005] The present invention has been made in consideration of the above circumstances, and has an object to provide a vehicle display device that can achieve space saving. [Means for solving the problem]

[0006] In order to achieve the above object, a display device for a vehicle according to the present invention includes a display device that is mounted on a vehicle and emits, as display light, an image that is visually recognized as a virtual image by an occupant of the vehicle toward a display surface provided in the vehicle, and a main housing that houses the display device therein and has an opening through which the display light is emitted toward the display surface, the display device including a display including a display screen capable of displaying the display light, and an LED board having a plurality of LED chips mounted on a board, a backlight that irradiates the emitted light toward the display, and a device housing that houses the backlight therein, the display screen is disposed at an angle with respect to an optical axis of the emitted light, the LED board is disposed opposite the display screen, and the plurality of LED chips are disposed in a stepped manner with respect to an optical axis direction along the optical axis in accordance with the inclination of the display screen. The display device has the substrate made of a metal material or a heat sink made of a metal material and having the LED substrate attached to a surface on the display screen side, and the substrate is formed with an opposing portion that faces the display screen and a connecting portion that intersects with the opposing portion and connects the opposing portions to each other. It is characterized by: Effect of the Invention

[0007] The vehicle display device according to the present invention has an effect of realizing space saving. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of a display device for a vehicle according to an embodiment. [Diagram 2] FIG. 2 is a diagram showing a schematic configuration of a display device constituting the vehicle display device according to the embodiment. [Diagram 3] FIG. 3 is a diagram showing a schematic configuration of a display device constituting a vehicle display device according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to this embodiment. In addition, the components in the following embodiments include those that are replaceable and easy for a person skilled in the art, or those that are substantially the same.

[0010] [Embodiment] The vehicular display device 1 is applied to a vehicle 400 such as an automobile, and is a head-up display device mounted in an instrument panel (not shown) provided on the dashboard of the vehicle 400.

[0011] As shown in FIG. 1 and FIG. 2, the vehicular display device 1 includes a display 10 and a control unit (not shown), and the display 10 includes a display device 100, a mirror 200, and a main housing 300. The display device 100 includes a display 110 including a display screen 111 capable of displaying display light L2, a backlight 120 including an LED substrate 121 as a light source, and a device housing 130. The vehicular display device 1 reflects the display light L2 emitted by the display device 100 toward a display surface 410 provided at the front of the vehicle 400 toward an eye point (visual position) EP, thereby allowing the image reflected on the display surface 410 to be visually recognized as a virtual image Vi that is superimposed on the scenery seen from the eye point EP. The eye point EP for the vehicular display device 1 is the position of the viewpoint of a driver 500 who is an occupant of the vehicle 400, and is assumed in advance as a spatial region. Moreover, the display surface 410 on which the display light L2 emitted by the display device 100 is reflected is configured by a windshield WS provided at the front of the vehicle 400. However, the form of the display surface 410 is not particularly limited, and may be, for example, a transparent or semi-transparent panel (for example, a combiner) provided closer to the driver 500 than the windshield WS. Furthermore, in the vehicle display device 1, the connection method between the components for transmitting and receiving power supply, control signals, various information, etc. may be any of wired connection via wiring materials such as electric wires and optical fibers (including, for example, optical communication via optical fibers), wireless communication, wireless connection such as non-contact power supply, etc., unless otherwise specified.

[0012] The vehicle display device 1 of this embodiment achieves space saving by displacing the LED boards 121 stepwise along the inclination of the display screen 111. Hereinafter, each component of the vehicle display device 1 will be described in detail with reference to Figs. 1 and 2.

[0013] The width direction of the vehicle display device 1 typically corresponds to the vehicle width direction Y of the vehicle 400 to which the vehicle display device 1 is applied. The depth direction of the vehicle display device 1 typically corresponds to the front-rear direction X of the vehicle 400 to which the vehicle display device 1 is applied (in other words, the traveling direction of the vehicle 400). The front side of the vehicle display device 1 is the side facing the driver's seat of the vehicle 400, and typically corresponds to the side viewed by the driver 500 seated in the driver's seat. On the other hand, the rear side of the vehicle display device 1 is the opposite side to the front side in the depth direction, and typically corresponds to the side accommodated inside the instrument panel.

[0014] In the following description, in the fore-aft direction X of the vehicle 400, the side on which the vehicle 400 moves forward may be referred to as the "front" and the side on which the vehicle 400 moves backward may be referred to as the "rear". In the vehicle width direction Y of the vehicle 400, the left side facing forward in the fore-aft direction X may be referred to as the "left" and the right side facing forward in the fore-aft direction X may be referred to as the "right". In the height direction Z of the vehicle 400, the upper side in the vertical direction may be referred to as the "upper side" and the lower side in the vertical direction may be referred to as the "lower side". Unless otherwise specified, each direction used in the following description represents the direction when each part is assembled to each other.

[0015] In the following description, in the display device 100, light emitted from the display screen 111 of the display 110 is referred to as display light L2. Also, parallel light emitted from the field lens 123 of the backlight 120 is referred to as emitted light L1, and the axis of the emitted light L1 is referred to as optical axis L1x. Also, the extension direction of the optical axis L1x is referred to as optical axis direction L1d.

[0016] [Display] The display 10 is located between the windshield WS and the eye point EP in the front-rear direction X, and is a part that enables the driver 500 to recognize the situation of the vehicle 400 by projecting a virtual image Vi onto the windshield WS.

[0017] The display device 100 is a part that emits display light L2 toward the mirror 200. When the backlight 120 irradiates the display 110 with emitted light L1, the display device 100 can display an image on a display screen 111 of the display 110 and emit the image as display light L2. Details of the display device 100 will be described later.

[0018] The mirror 200 is a part that reflects the display light L2 toward the windshield WS. As shown in Fig. 1, the mirror 200 has a concave reflecting surface and can enlarge an image. The shape of the reflecting surface is, for example, a free curved surface, and can be a shape that can correct distortion and aberration of the image.

[0019] The main housing 300 is made of a resin material or the like, and is formed into a box shape, so that the display device 100, the mirror 200, etc. can be housed inside (internal space 300S). As shown in Fig. 1, the main housing 300 of this embodiment is formed by a wall portion 300K, and has an assembly opening 300a into which the display device 100 can be assembled, and an opening 300b from which the display light L2 can be emitted to the outside.

[0020] 1, the assembly opening 300a is located on the rear side of the main housing 300 and is formed to open along the front-rear direction X. The display device 100 is assembled such that the rear side of the device housing 130 is exposed to the outside of the main housing 300. Therefore, the display device 100 is assembled to the main housing 300 such that the display light L2 emitted from the display 110 is emitted toward the front side, and the periphery of the display 110 is covered by the wall portion 300K, thereby blocking the display light L2.

[0021] On the other hand, the opening 300b is provided in the wall 300Kb located on the upper side (the side where the display surface 410 is located) of the main housing 300 as shown in FIG. 1, and is formed to open along the height direction Z. Therefore, when the display light L2 emitted from the display 110 travels toward the opening 300b via the mirror 200 or the like, the main housing 300 can emit the display light L2 toward the outside. Therefore, the display device 10 can emit the display light L2 toward the display surface 410 located above the opening 300b while being mounted in the instrument panel. The opening 300b may be closed by a transparent cover that can transmit the display light L2.

[0022] [Control Unit] The control unit is configured as a microcomputer and is a part capable of controlling the display 10. The control unit can acquire the status of the vehicle 400 from devices mounted on the vehicle 400, a server, etc. The control unit can also execute a process of generating an image based on the acquired information and displaying the image on the display screen 111 of the display 110, thereby superimposing the virtual image Vi on the scenery visible from the eye point EP.

[0023] [Display device] Next, the display device 100 will be described in detail.

[0024] The display 110 is a part that transmits the emitted light L1 and emits the light as display light L2. The display screen 111 of the display 110 is a light-transmitting TFT liquid crystal (Thin Film Transistor Liquid It is composed of a 3.1-inch LCD, ...

[0025] The backlight 120 is a unit including an LED substrate 121 , a condenser lens 122 , and a field lens 123 .

[0026] The LED substrate 121 includes a plurality of LED chips 121a and a substrate 121b on which each of the LED chips 121a can be mounted. The substrate 121b is made of a metal material such as aluminum and formed in a flat plate shape, and is a member on one side of which the LED chips 121a can be fixed. On the other hand, the LED chips 121a are light sources made of light-emitting diodes, and are members that emit light when supplied with power from a power source (not shown) such as a secondary battery of the vehicle 400. The LED chips 121a are arranged in a lattice pattern on the substrate 121b, and are arranged to face the display screen 111 when the substrate 121b is assembled into the device housing 130, and can emit light toward the display screen 111.

[0027] The condenser lens 122 is a lens made of glass or transparent resin. The condenser lens 122 has an entrance surface made of a flat surface and an exit surface made of a convex curved surface, and is disposed so that the entrance surface faces the LED chip 121a. As shown in FIG. 2, the condenser lens 122 is provided on each of the LED chips 121a, thereby being able to condense the light emitted from each of the LED chips 121a.

[0028] Field lens 123 is a lens made of glass or transparent resin. Field lens 123 has an entrance surface and an exit surface, and is disposed so that the entrance surface faces condenser lens 122. As shown in FIG. 2, field lens 123 is provided between condenser lens 122 and display screen 111, and can adjust the traveling direction of the incident light beams from condenser lens 122 to a predetermined direction. Therefore, backlight 120 can emit parallel light toward display screen 111.

[0029] The device housing 130 is made of a resin material or the like, and is formed into a box shape, thereby accommodating the display 110, the backlight 120, etc. inside (internal space 130S). As shown in Fig. 1 and Fig. 2, the device housing 130 of this embodiment is formed by a wall portion 130K, and has an assembly opening 130a into which the display 110 can be attached, and an assembly opening 130b into which the LED board 121 constituting the backlight 120 can be attached.

[0030] 1 and 2, the mounting opening 130a is located on the front side of the device housing 130 and is formed to open along the front-rear direction X when the display device 100 is mounted in the main housing 300. The display screen 111 of the display 110 is mounted in the mounting opening 130a, and is arranged to be inclined in the inclination direction Z1 with respect to the optical axis L1x of the emitted light L1 when mounted in the instrument panel. More specifically, the display screen 111 of this embodiment is arranged to be inclined in the height direction Z so that an end P1 located on the opening 300b side (display surface 410 side) of the main housing 300 protrudes forward in the emission direction of the emitted light L1 (to the display screen 111 side in the optical axis direction L1d of the optical axis L1x). At this time, in the display device 100, the end P1 of the display screen 111 is disposed forward of the end P2 located on the opposite side to the opening 300b, so that when external light enters the main housing 300 through the opening 300b, the reflected light L3 reflected by the display screen 111 can be directed toward the end P2. Therefore, the display device 100 can change the path of the light so that the external light reflected by the display screen 111 does not retrace the incident path and exit from the opening 300b again to return to the eyes of the driver 500.

[0031] On the other hand, as shown in FIG. 2, the mounting opening 130b is formed to be located on the rear side of the device housing 130 and open along the front-rear direction X in a state in which the display device 100 is mounted in the main housing 300. The LED substrate 121 constituting the backlight 120 is mounted to a predetermined position of the wall portion 130K of the device housing 130 by a fastening member such as a screw, so as to close the mounting opening 130b. More specifically, as shown in FIG. 2, the backlight 120 of this embodiment is arranged in the order of the field lens 123, the condenser lens 122, and the LED substrate 121 from the display screen 111 side, and the LED substrate 121 is mounted at a position exposed to the outside of the main housing 300. In addition, the LED substrate 121 is formed so that an end Q1 located on the opening 300b side (display surface 410 side) of the main housing 300 in the height direction Z protrudes forward in the emission direction of the emitted light L1 from an end Q2 located on the opposite side to the opening 300b side.

[0032] In addition, as shown in FIG. 2, the LED board 121 of this embodiment has a board 121b formed in a stepped shape, and the board 121b has an opposing portion D facing the display screen 111 and a connecting portion E intersecting the opposing portion D and connecting the opposing portions D to each other, which are alternately formed. In addition, the LED board 121 is configured so that, when assembled in the assembly opening 130b, the distance X1 from the opposing portion D of the board 121b to the display screen 111 is a constant value. In addition, by arranging the LED chips 121a on the opposing portions D of the LED board 121, the LED chips 121a are arranged facing the display screen 111 and are arranged to be shifted in stages with respect to the emission direction of the emitted light L1. Therefore, the LED board 121 can arrange the LED chips 121a along the inclination of the display screen 111, and the distance from the LED chips 121a to the display screen 111 can be a constant value. The method for processing the substrate 121b is not particularly limited, and the substrate 121b may be formed into a stepped shape by bending or the like.

[0033] In the display device 100 of this embodiment, the LED substrate 121 configured as described above is assembled into the assembly opening 130b of the device housing 130, so that the height X2 of the backlight 120 accommodated in the internal space 130S can be reduced. Therefore, the size (volume) of the main housing 300 becomes smaller compared to when the substrate 121b is formed along the height direction Z based on the position of the end Q2 shown in FIG. 2, that is, when the substrate 121b is formed linearly.

[0034] Moreover, the LED board 121 can increase the surface area by forming the board 121b in a stepped shape. Compared to when the board 121b is formed in a straight line, the surface area of ​​the board 121b is increased by the connecting portion E located between the opposing portions D. Therefore, the LED board 121 can efficiently release heat generated when the LED chip 121a emits light. Moreover, the LED board 121 can efficiently release heat generated when the LED chip 121a emits light by assembling the board 121b in the opening of the device housing 130 and assembling one surface of the board 121b so as to be exposed from the main housing 300.

[0035] In addition, since the board 121b of the LED board 121 is formed in a stepped shape, the external space S formed on the opposite side to the display screen 111 side across the LED board 121 is formed in a stepped shape along the inclination of the display screen 111. In addition, since the end Q1 located on the upper side of the board 121b of the LED board 121 is formed to protrude forward in the emission direction of the emitted light L1 from the end Q2 located on the lower side, the external space S is positioned such that the part located on the end Q1 side of the board 121b protrudes toward the display screen 111 side in the optical axis direction L1d from the part located on the end Q2 side of the board 121b. Therefore, the external space S can release heat generated when the LED chip 121a emits light upward.

[0036] The above-described vehicular display device 1 includes a display device 100 mounted on a vehicle 400, which emits an image, which is visually recognized as a virtual image Vi by a driver 500, who is an occupant of the vehicle 400, as display light L2 toward a display surface 410 provided on the vehicle 400, and a main housing 300 which houses the display device 100 therein and has an opening 300b for emitting the display light L2 toward the display surface 410. The display device 100 also includes a display 110 including a display screen 111 capable of displaying the display light L2, a backlight 120 including an LED substrate 121 having a plurality of LED chips 121a mounted on a substrate 121b, which irradiates the display 110 with emitted light L1, and a device housing 130 which houses the LED substrate 121 therein. In addition, the display screen 111 is arranged at an incline with respect to the optical axis L1x of the emitted light L1, the LED substrate 121 is arranged opposite the display screen 111, and the multiple LED chips 121a are arranged in a stepwise shifted manner with respect to the optical axis direction L1d along the optical axis L1x, in line with the inclination of the display screen 111.

[0037] According to such a configuration, the display device 100 can reduce the height X2 of the backlight 120 housed therein by arranging the LED chips 121a of the LED substrate 121 in a stepwise shifted manner. Therefore, the display device 100 can reduce the volume compared to when the LED chips 121a are arranged in a straight line, and accordingly, the vehicular display device 1 can reduce the volume of the portion exposed to the outside of the main housing 300. Therefore, the vehicular display device 1 can achieve space saving.

[0038] Furthermore, the substrate 121b described above is made of a metal material and formed in a stepped shape along the inclination of the display screen 111, and each of the LED chips 121a is disposed on a surface (facing portion D) of the stepped substrate 121b that faces the display screen 111. With this configuration, the substrate 121b is formed in a stepped shape, so that the surface area can be increased compared to when the substrate 121b is formed in a straight line. Therefore, the LED substrate 121 can efficiently dissipate heat generated when the LED chips 121a emit light through the substrate 121b.

[0039] Furthermore, the display screen 111 of the display device for vehicle 1 described above is arranged at an incline with respect to the optical axis L1x of the emitted light L1 so that when external light is incident on the main housing 300 through the opening 300b, the reflected light L3 reflected by the display screen 111 is directed toward the opposite side to the side where the opening 300b is located. In addition, the external space portion S formed on the opposite side to the display screen 111 side across the LED substrate 121 is formed in a stepped shape along the inclination of the display screen 111, and the portion located on the opening 300b side is positioned to protrude toward the display screen 111 side in the optical axis direction L1d relative to the portion located on the opposite side to the opening 300b side. With this configuration, the display device 100 can reduce the volume of the portion located on the opening 300b side (the portion located on the upper side in the height direction Z) compared to when the LED chips 121a are arranged in a straight line. In addition, when the gas around the LED substrate 121 expands due to the heat generated when the LED chip 121a emits light and the gas tries to escape upward, the display device 100 can efficiently release the heat contained in the gas to the outside of the main housing 300 by efficiently releasing the gas.

[0040] The above-described vehicle display device 1 of the present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the claims.

[0041] For example, there is no particular limitation on the inclination direction Z1 of the display screen 111. As shown in Fig. 2, the display screen 111 has been described as being formed such that the end P1 located on the opening 300b side of the main housing 300 protrudes forward, but the end P2 located on the opposite side to the opening 300b side may be formed such that it protrudes forward.

[0042] Further, the method of assembling the LED board 121 to the device housing 130 is not particularly limited, and the shape of the board 121b of the LED board 121 is not particularly limited as long as the LED chips 121a are arranged along the inclination of the display screen 111 and are arranged with a stepwise shift with respect to the optical axis direction L1d along the optical axis L1x. As shown in FIG. 2, the LED board 121 has been described as being directly assembled to the assembly opening 130b of the device housing 130, but it may be indirectly assembled via another structural member that can be assembled to the assembly opening 130b.

[0043] 3 shows a display device 100A applied to a vehicle display device 1A according to a modified example. The display device 100A includes a display 110, a backlight 120A, and a device housing 130, and further includes a heat sink 600 that can be attached to an attachment opening 130b of the device housing 130.

[0044] The heat sink 600 is a so-called heat sink, and is made of a metal material. The heat sink 600 is formed in a stepped shape along the inclination of the display screen 111, and has an opposing portion DA facing the display screen 111 and a connecting portion EA intersecting the opposing portion DA, which are alternately formed. The heat sink 600 is formed so that an end R1 located on the opening 300b side (display surface 410 side) of the main housing 300 in the height direction Z protrudes forward in the emission direction of the emitted light L1 from an end R2 located on the opposite side to the opening 300b side.

[0045] The backlight 120A includes a plurality of LED substrates 121A, a condenser lens 122, and a field lens 123. The LED substrate 121A includes a substrate 121bA formed in a strip shape and a plurality of LED chips 121a arranged in a line on the substrate 121bA. The LED substrates 121A are attached to the opposing portions DA of the heat sink 600 by fastening members such as screws. The heat sink 600 to which the LED substrates 121A are attached is attached to a predetermined portion of the wall portion 130K of the device housing 130, so as to close the attachment opening 130b. Therefore, each of the LED chips 121a is disposed together with the substrate 121bA on the surface of the step-shaped heat sink 600 facing the display screen 111, and is disposed in a stepwise shifted manner with respect to the optical axis direction L1d along the optical axis L1x, along the inclination of the display screen 111.

[0046] In addition, the external space SA formed on the opposite side of the display screen 111 across the LED substrate 121A is formed in a stepped shape similar to the external space S described above, and the portion located on the opening 300b side is positioned to protrude forward in the emission direction of the emitted light L1 relative to the portion located on the opposite side of the opening 300b.

[0047] According to this configuration, the heat sink 600 is configured so that the distance from the facing portion DA to the display screen 111 is constant, similar to the substrate 121b described above, so that the distance from the LED chip 121a to the display screen 111 can be constant. Also, the LED substrate 121A is assembled to the heat sink 600 having high thermal conductivity, so that the heat generated when the LED chip 121a emits light can be efficiently dissipated through the heat sink 600. Also, the display device 100A can reduce the height of the backlight 120A housed therein, similar to the display device 100 described above, and therefore the vehicular display device 1A can reduce the volume of the part exposed to the outside of the main housing 300. Therefore, the vehicular display device 1A can achieve space saving. Furthermore, by forming the external space SA in a stepped manner in accordance with the slope of the display screen 111, similar to the external space S described above, the heat generated when the LED chip 121a emits light can be efficiently dissipated to the outside of the main housing 300.

[0048] The vehicle display device 1, 1A according to the present embodiment may be configured by appropriately combining the components of the embodiment and modified examples described above. [Explanation of symbols]

[0049] 1, 1A Vehicle display device 100, 100A display device 111 Display screen 110 Display 120, 120A Backlight 121, 121A LED board 121a LED Chip 121b, 121bA board 130 Device housing 200 Mirror 300 Main unit 300b Opening of main housing 400 vehicles 410 Display surface 500 Driver (passenger) L1 output light L1x optical axis L1d Optical axis direction L2 display light L3 reflected light S, SA External space section Vi Virtual Image X Anteroposterior direction Y Vehicle width direction Z height direction Z1 Tilt direction

Claims

1. a display device that is mounted on a vehicle and emits, as display light, an image that is visually recognized as a virtual image by an occupant of the vehicle toward a display surface provided in the vehicle; a main housing that houses the display device therein and has an opening through which the display light is emitted toward the display surface; the display device includes a display including a display screen capable of displaying the display light, a backlight including an LED board on which a plurality of LED chips are mounted, the backlight irradiating the display with emitted light, and a device housing accommodating the backlight therein; the display screen is disposed at an angle with respect to an optical axis of the emitted light, The LED board is disposed opposite the display screen, The plurality of LED chips are arranged so as to be shifted stepwise with respect to an optical axis direction along the optical axis in accordance with a tilt of the display screen, The display device has one of the substrates made of a metal material, or one of the heat sinks made of a metal material and having the LED substrate assembled on the surface on the display screen side, and the one of the substrates is formed with an opposing portion positioned opposite the display screen and a connecting portion positioned intersecting the opposing portion and connecting the opposing portions to each other, alternately. Vehicle display device.

2. the one is the substrate, the substrate is formed in a stepped shape in accordance with the inclination of the display screen, Each of the LED chips is disposed on a surface of the substrate that is formed in a stepped shape and faces the display screen. The display device for a vehicle according to claim 1 .

3. The one is the heat sink, the display device has the heat sink formed in a stepped shape along the inclination of the display screen, Each of the LED chips is disposed on a surface of the step-shaped heat sink facing the display screen together with the substrate. The display device for a vehicle according to claim 1 .

4. the display screen is disposed at an angle with respect to an optical axis of the emitted light such that, when external light is incident on the main housing through the opening, the reflected light reflected on the display screen travels toward an opposite side to a side on which the opening is located; The external space portion formed on the opposite side to the display screen side across the LED board is formed in a stepped shape along the inclination of the display screen, and a portion located on the opening side is positioned to protrude toward the display screen side in the optical axis direction relative to a portion located on the opposite side to the opening side. The display device for a vehicle according to any one of claims 1 to 3.

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