Display device

Abstract

To provide a display device capable of preventing a display from being seen while preventing a plurality of occupants from being hindered from visually recognizing a virtual image.SOLUTION: A display device 100 displays a virtual image that can be visually recognized by a plurality of occupants such as a driver Dv and a passenger Pg. The display device 100 includes: a display that displays a display image on a display surface; a reflecting mirror 30 that reflects light of the display image; a hood 40 that holds the display; and a shielding portion 50 that protrudes downward Si from an eaves portion 43 of the hood 40. A protrusion height h of the shielding portion 50 is defined with reference to one being located on the lower side Si, of a first virtual line VL1 connecting the lowermost point of a driver's eye point and a back-side edge of the display surface and a second virtual line VL2 connecting the lowermost point of a passenger's eye point and the back-side edge. Both the first virtual line VL1 and the second virtual line VL2 change in a widthwise direction WD so as to intersect the shielding portion 50.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The disclosure herein relates to a display device that is viewable by multiple occupants. [Background technology]

[0002] Patent Document 1 discloses a display device that displays a virtual image that is visible to a vehicle occupant by reflecting display light from multiple displays with a reflector. The multiple displays are fixed to the back surface of a meter hood that covers the upper part of the reflector, and are arranged along the extension direction of the meter hood. The virtual image displayed by such a display device can be seen not only by the driver but also by a passenger sitting in the passenger seat, for example. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-76713 Summary of the Invention [Problem to be solved by the invention]

[0004] In the display device of Patent Document 1, if the eye point of the driver or passenger is located low, the image displayed on the display may be visible. To prevent such visibility of the display image, it is conceivable to provide a shielding portion that hides the display on the back surface of the meter hood, for example. However, if the shielding portion that prevents the display from being visible to both the driver and passenger is provided at a certain height, there is a risk that it may interfere with the visibility of the virtual image displayed by the reflector.

[0005] The present disclosure aims to provide a display device that can make the display invisible to multiple occupants while not interfering with their ability to view a virtual image. [Means for solving the problem]

[0006] In order to achieve the above object, one disclosed aspect is a display device that displays a virtual image (Vi) visible to multiple occupants of a moving body (A), the display device comprising: at least one display (20) that displays a display image (Di) formed as a virtual image on a display surface (21); at least one reflective optical element (30) having a reflective surface (31) that reflects light of the display image toward the occupants and that forms a display area (DA) extending along a width direction (WD) of the moving body by the reflective surface; a hood (40) that is formed in a plate shape and covers the reflective surface above the reflective optical element (Ue), and holds the display by a back surface (41) that is located on the reflective optical element side; and a shielding portion (50) that protrudes downward (Si) from a tip portion (43) of the hood that is located closer to the occupants than the display and hides the display held on the back surface, and the iris (EL1) is assumed to be where the eye point (EP1) of the occupant, the driver (Dv), is located. The 90th percentile iris is used. The virtual line connecting the lowest point (LEP1) of the display surface and the farthest rear edge (BEd) from the shielding part of the display surface is defined as the first virtual line (VL1). Sit in the passenger seat The eye point (EP2) of the passenger (Pg) is assumed to be located at the iris (EL2). The iris uses the same 90th percentile iris as the driver's iris. If the virtual line connecting the lowest point (LEP2) and the rear edge is defined as the second virtual line (VL2), the protruding height (h) from the tip of the shielding part is determined based on one of the first and second virtual lines which is located lower, and the display device changes in the width direction so that both the first and second virtual lines intersect with the shielding part.

[0007] In this configuration, both the first and second virtual lines connecting the lowest point of each iris and the rear edge of the display surface intersect with the shielding portion, making it difficult for the driver and passengers to see the rear side of the display surface even when the eyepoint is lowered. In addition, by using the lower one of the first and second virtual lines as the reference, the protruding height of the shielding portion can be appropriately controlled. As a result, it is possible to make the display invisible to multiple occupants without interfering with their ability to view the virtual image.

[0008] Another disclosed aspect is a display device that displays a virtual image (Vi) visible to multiple occupants of a moving body (A), comprising at least one display (20) that displays a display image (Di) formed as a virtual image on a display surface (21), at least one reflective optical element (30) having a reflective surface (31) that reflects light of the display image toward the occupants and that forms a display area (DA) extending along the width direction (WD) of the moving body with the reflective surface, a hood (40) that is formed in a plate shape and covers the reflective surface above the reflective optical element (Ue), and that holds the display with a back surface (41) that is located on the reflective optical element side, and an iris (EL1) where the eye point (EP1) of the driver (Dv), who is an occupant, is assumed to be located. The 90th percentile iris is used. The imaginary line connecting the lowest point (LEP1) of the vehicle and the rear edge (BEd) of the display surface that is the furthest from the leading edge (44) of the hood is defined as the first imaginary line (VL1). Sit in the passenger seat The eye point (EP2) of the passenger (Pg) is assumed to be located at the iris (EL2). The iris uses the same 90th percentile iris as the driver's iris. If the virtual line connecting the lowest point (LEP2) and the rear edge is defined as the second virtual line (VL2), the display is a display device held by the hood with the display surface aligned along one of the first and second virtual lines, whichever is located lower (Si).

[0009] In this configuration, the display is held on the hood with the display surface aligned with the lower one of the first and second virtual lines, making it difficult for the driver and passengers to see the far side of the display surface even if the eye point is lowered. Furthermore, since a shielding portion is not required, it becomes easier to see the virtual image. As a result, it is possible to hide the display from multiple passengers without interfering with their ability to see the virtual image.

[0010] Note that the reference numbers in parentheses above and in the claims merely indicate an example of the correspondence with the specific configurations in the embodiments described below, and do not in any way limit the technical scope. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a diagram illustrating an outline of a mechanical configuration of a display device according to a first embodiment of the present disclosure and a mechanism for displaying a virtual image in a display area. [Figure 2] FIG. 2 is a diagram showing the overall configuration of the display device as seen from the driver's perspective. [Figure 3] FIG. 2 is a plan view showing the positional relationship between the driver and passenger and each component of the display device. [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Figure 5] FIG. 4 is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. [Figure 7] 7 is a view of the shielding portion as viewed in the direction of arrow VII in FIG. 3, illustrating the detailed shape of the central region of the shielding portion. FIG. [Figure 8] 10A and 10B are diagrams for explaining the detailed shape of an end region of a shielding portion. [Figure 9] FIG. 10 is a block diagram showing the electrical configuration of a display device according to a second embodiment. [Figure 10] 10A and 10B are diagrams for explaining brightness control when the eye point is below the iris. [Figure 11] 10A and 10B are diagrams for explaining display control when the eye point is off below the iris in the display device according to the third embodiment. [Figure 12] 10A and 10B are diagrams for explaining display control when the eye point moves to the upper part of the iris. [Figure 13] FIG. 10 is a block diagram showing the electrical configuration of a display device according to a fourth embodiment. [Figure 14] 10A and 10B are diagrams for explaining the operation of the extrusion mechanism. [Figure 15] FIG. 11 is a block diagram showing the electrical configuration of a display device according to a fifth embodiment. [Figure 16] FIG. 10 is a diagram illustrating the operation of the light control film. [Figure 17] FIG. 10 is a diagram showing the state of the light control film in private view mode. [Figure 18]FIG. 10 is a cross-sectional view showing the configuration of a display device according to a sixth embodiment. [Figure 19] 10 is a diagram showing a detailed shape of an end region of a shielding portion according to Modification 1. FIG. [Figure 20] 10 is a diagram showing a cross-sectional shape of a central portion of a shielding portion according to Modification 2. FIG. [Figure 21] 13 is a diagram showing the cross-sectional shape of a shielding portion according to Modification 3. FIG. [Figure 22] 13 is a diagram showing the cross-sectional shape of a shielding portion according to Modification 4. FIG. [Figure 23] 13 is a diagram showing the cross-sectional shape of a shielding portion according to Modification 5. FIG. [Figure 24] 13 is a diagram showing the cross-sectional shape of a shielding portion according to a sixth modification. FIG. [Figure 25] 13 is a diagram showing the cross-sectional shape of a shielding portion according to Modification 7. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, several embodiments will be described with reference to the drawings. Note that corresponding components in each embodiment are given the same reference numerals, and redundant description may be omitted. When only a portion of the configuration is described in each embodiment, the configuration of another embodiment described previously can be applied to the remaining portion of the configuration. Furthermore, in addition to the combinations of configurations explicitly stated in the description of each embodiment, configurations of several embodiments can also be partially combined together even if not explicitly stated, as long as there is no particular problem with the combination.

[0013] (First embodiment) A display device 100 according to a first embodiment of the present disclosure shown in FIGS. 1 and 2 is mounted on a vehicle (hereinafter, referred to as host vehicle A) as a moving body. The host vehicle A in the first embodiment is a left-hand drive vehicle in which the steering wheel is disposed on the left side of the traveling direction in the width direction WD. In the host vehicle A, a driver's seat in which a driver Dv is seated is disposed to the left of the center in the width direction WD with respect to the traveling direction. Meanwhile, a passenger seat in which a passenger (hereinafter, referred to as a passenger Pg) other than the driver Dv is seated is disposed to the right of the center in the width direction WD with respect to the traveling direction.

[0014] In the following description, the front-rear, left-right, and up-down directions are defined based on the host vehicle A being stationary on a horizontal plane. Specifically, the front-rear direction (forward Ze and backward Go) is defined along the longitudinal direction (direction of travel) of the host vehicle A. The left-right direction (width direction WD) is defined as a direction along the horizontal plane and perpendicular to the front-rear direction. Furthermore, the up-down direction (upward Ue and downward Si) is defined as a direction perpendicular to the horizontal plane.

[0015] The display device 100 is installed integrally with the instrument panel 10 in front of the driver Dv and passenger Pg Ze. The display device 100 has a horizontally long display area DA that displays information to multiple occupants including the driver Dv and passenger Pg. The display device 100 forms a pillar-to-pillar display area DA that extends along the width direction WD, for example, from the base of the left A-pillar to the base of the right A-pillar. The display area DA may be continuous in the width direction WD, or may be divided into multiple areas.

[0016] The display area DA displays a virtual image Vi that is visible to the driver Dv and passenger Pg. The virtual image Vi is actually formed further back than the display area DA when viewed from the driver Dv and passenger Pg. Displaying the virtual image Vi further back than the display area DA reduces the burden of adjusting the focal length when the viewpoint moves from the front to the display area DA and suppresses deterioration of the visibility of the display due to external light.

[0017] The display device 100 includes a plurality of displays 20, a reflector 30, a hood 40, and a shielding portion 50.

[0018] The display 20 is a self-luminous display device such as an organic EL (Electro Luminescence) display. The display 20 displays various images (hereinafter, display images Di) on the display surface 21 by emitting light from a large number of pixels arranged two-dimensionally along the display surface 21. The display surface 21 may be flat or slightly curved. The display 20 emits light of the display image Di, which is formed as a virtual image Vi, from the display surface 21 and causes it to be incident on the reflecting mirror 30.

[0019] The multiple displays 20 have a horizontally long rectangular shape. The displays 20 are arranged in the width direction WD of the vehicle A with the display surface 21 tilted slightly (for example, by about 10 degrees) relative to the horizontal plane. The display surfaces 21 are tilted upward Ue as they extend rearward Go. The tilt angle of each display surface 21 relative to the horizontal plane does not have to be constant, and may change continuously or stepwise in the width direction WD. As an example, the tilt angle of the display surface 21 relative to the horizontal plane is largest for the display 20 located at the center of the width direction WD, and decreases toward both ends of the width direction WD.

[0020] The reflecting mirror 30 is a reflective optical element in which a reflecting surface 31 is formed by vapor deposition of aluminum or the like on the surface of a substrate such as glass shaped into a horizontally long rectangular plate. The display device 100 is provided with a single reflecting mirror 30 arranged to face the multiple displays 20. The reflecting mirror 30 has a horizontally long shape and is arranged with its longitudinal direction aligned with the width direction WD of the vehicle A. The reflecting mirror 30 forms the display area DA of the display device 100 with the reflecting surface 31, and it is possible to make the display area DA consisting of the horizontally long reflecting surface 31 appear as a pseudo-large display.

[0021] The reflecting mirror 30 is inclined forward Ze as it extends upward Ue, with the reflecting surface 31 facing each display surface 21. The distance between the reflecting surface 31 and the display surface 21 increases as it extends backward Go. The reflecting surface 31 reflects light of the display image Di incident from the display surface 21 in the upward Ue toward the driver Dv and passenger Pg. The driver Dv and passenger Pg view a virtual image Vi of the display image Di displayed on the display surface 21 in front Ze (rear side) of each reflecting surface 31.

[0022] The display 20 arranged on the leftmost side of the plurality of displays causes the left end region of the display area DA to function as an electronic mirror substituting for the left side mirror by projecting an image captured of the left rear side of the vehicle A onto the reflector 30. Similarly, the display 20 arranged on the rightmost side causes the right end region of the display area DA to function as an electronic mirror substituting for the right side mirror by projecting an image captured of the right rear side of the vehicle A onto the reflector 30.

[0023] The second display 20 from the left reflects information indicating the driving status of the vehicle A, such as driving speed, driving mode, driving distance, and instantaneous fuel consumption (or instantaneous electric consumption), on the reflector 30, causing the area in front of the driver in the display area DA to function as a combination meter. The third display 20 from the left (in the center of the vehicle) displays, for example, images related to navigation in the center area of the vehicle in the display area DA. The fourth display 20 from the left displays video content, etc., intended for the passenger Pg, in the area in front of the passenger in the display area DA. The display positions of the above-mentioned display contents may be changed as appropriate based on user operations, etc. Furthermore, display contents different from those described above may be displayed in each area of the display area DA.

[0024] The hood 40 is formed in the shape of a horizontally long plate made of a light-blocking resin material or the like. The hood 40 is positioned slightly inclined relative to the horizontal plane above Ue the multiple displays 20 and the ultra-wide reflector 30. The hood 40 is shaped to cover the reflecting surface 31 from above Ue, thereby blocking external light (e.g., sunlight) from directly entering the display area DA. At least a portion of the upper surface (front surface) of the hood 40 located in the forward direction Ze is covered by the instrument panel 10. This arrangement allows the hood 40 to be integrated with the instrument panel 10.

[0025] The hood 40 slopes upward Ue toward the rear Go. The inclination angle of the hood 40 is set so as to be approximately parallel to the line of sight from the eyepoint of the driver Dv (hereinafter referred to as eyepoint EP1) toward the hood 40, in order to make the thickness of the hood 40 appear thinner. Of both sides of the hood 40, a back surface 41 facing downward Si is provided with a holding portion 42. The holding portion 42 individually holds multiple displays 20. Each display 20 is held on the back surface 41 slightly forward Ze of the edge portion (hereinafter referred to as the eaves portion 43) of the rear Go of the hood 40. Each display 20 may be held to the holding portion 42 by adhesive, double-sided tape, or the like, or may be held to the holding portion 42 via an attachment member or the like.

[0026] Like the hood 40, the shielding portion 50 is formed of a light-blocking resin material or the like. The shielding portion 50 may be a member attached to the hood 40, or may be a part of the hood 40 molded integrally with the hood 40. The shielding portion 50 protrudes downward Si from an eaves portion 43 on the back surface 41 that is located closer to the occupant (rearward Go) than each display 20. The leading edge of the shielding portion 50 in the protruding direction (hereinafter referred to as the top edge 54) is located below Si below the display 20. By being positioned rearward Go of the display 20, the shielding portion 50 conceals the display 20 held on the back surface 41 of the hood 40 from the driver Dv, making it invisible.

[0027] Here, because the display device 100 forms a pillar-to-pillar display area DA, not only the driver Dv but also the passenger Pg can see the display area DA located in front of the driver Dv. Similarly, the driver Dv may also see the display area DA located in front of the passenger Pg. For these reasons, the shielding portion 50 is required to have a shape that hides the display surface 21 of all of the displays 20 from both the driver Dv and the passenger Pg. Details of the shape of the shielding portion 50 that hides all of the display surface 21 from the driver Dv and the passenger Pg will be further described below based on FIGS. 3 to 8 and with reference to FIGS. 1 and 2.

[0028] Iris for the driver Dv and the passenger Pg are set in the cabin of the host vehicle A. The iris is a virtual spatial region defined for each vehicle model, and is set in the shape of a virtual ellipsoid based on an eye range that statistically represents the spatial distribution of eye points. Specifically, a driver iris EL1 (see FIG. 4) is set as the spatial region where the driver's eye point EP1 is assumed to be located. Similarly, a passenger iris EL2 (see FIG. 5) is set as the spatial region where the passenger Pg's eye point (hereinafter referred to as passenger eye point EP2) is assumed to be located. Each of the irises EL1 and EL2 is located near the headrests of the driver's seat and the passenger seat. Generally, an iris between the 90th percentile and the 99th percentile is used for each of the irises EL1 and EL2. In the present disclosure, a 90th percentile iris is used for each of the irises EL1 and EL2.

[0029] A first imaginary line VL1 (see FIG. 4) and a second imaginary line VL2 (see FIG. 5) are defined based on each of the irises EL1 and EL2. The first imaginary line VL1 is an imaginary line connecting the lowest point LEP1 of the driver iris EL1 to the rear edge BEd of the display surface 21, which is the farthest from the shielding portion 50. The second imaginary line VL2 is an imaginary line connecting the lowest point LEP2 of the passenger iris EL2 to the rear edge BEd of the display surface 21. The rear edge BEd is the side that is along the width direction WD and closest to the reflecting surface 31, among the four sides that define the rectangular display surface 21.

[0030] The points where the first virtual line VL1 and the second virtual line VL2 intersect with the occlusion portion 50 are the driver visibility prevention point VP1 and the passenger visibility prevention point VP2, respectively. Here, an infinite number of first virtual lines VL1 and second virtual lines VL2 connecting the lowest points LEP1 and LEP2 with any point on the rear edge BEd can be defined. Therefore, a driver visibility prevention line SL1 (see FIG. 7) is defined in the space below the eaves portion 43 as a collection of countless driver visibility prevention points VP1, which are intersections between the first virtual line VL1 and the occlusion portion 50. Similarly, a passenger visibility prevention line SL2 (see FIG. 7) is defined in the space below the eaves portion 43 as a collection of countless passenger visibility prevention points VP2, which are intersections between the second virtual line VL2 and the occlusion portion 50. The driver visibility prevention line SL1 is closest to the back surface 41 of the hood 40 approximately in front of the driver Dv, and becomes farther away from the back surface 41 as it moves toward the front of the passenger Pg. The passenger visibility prevention line SL2 is closest to the back surface 41 of the hood 40 approximately in front of the passenger Pg, and becomes farther away from the back surface 41 as it moves toward the front of the driver Dv.

[0031] If the projection height h of the shielding portion 50 from the eaves portion 43 is constant (see the dashed line in FIG. 7), the shielding portion 50 extending in a strip shape along the width direction WD causes the entire hood 40 to be perceived as a thick member. This may result in a deterioration in the design of the display device 100. In addition, if the eyepoints EP1 and EP2 are located above the irises EL1 and EL2, the visibility of the display area DA (virtual image Vi) may be reduced due to the shielding portion 50 blocking the eyepoints.

[0032] To avoid such deterioration in design and visibility, the protruding height h of the shielding portion 50 varies continuously in the width direction WD. Specifically, the protruding height h is determined based on the lower one of the first imaginary line VL1 and the second imaginary line VL2, and increases or decreases so that both the first imaginary line VL1 and the second imaginary line VL2 intersect with the shielding portion 50. The protruding height h is lowest at the center of the width direction WD and gradually increases toward the outside in the width direction WD. In the left area located in front of the driver Dv, the protruding height h is determined based on the second imaginary line VL2, with the top edge 54 aligned with the passenger visibility prevention line SL2. Meanwhile, in the right area located in front of the passenger Pg, the protruding height h is determined based on the first imaginary line VL1, with the top edge 54 aligned with the driver visibility prevention line SL1.

[0033] The protruding height h can be reduced as the display 20 approaches horizontal, and increases as the display 20 becomes more inclined relative to the horizontal plane. Additionally, in the left and right end regions 56h, 56m of the shielding portion 50 in the width direction WD, the protruding height h gradually decreases toward the outside in the width direction WD (see FIG. 8 ). Each end region 56h, 56m is located outward of the driver Dv and passenger Pg in the width direction WD, and is a region where the display surface 21 is not visible from the irises EL1, EL2. The range of each end region 56h, 56m, which faces the left and right ends 47h, 47m of the hood 40, constitutes an invisible region 56a where the display 20 itself is not visible to the driver Dv and passenger Pg. The range inside each invisible region 56a constitutes a cut-off region 56b where only the side of the display 20 is visible to the driver Dv and passenger Pg. In each of the end regions 56h, 56m, the top edge 54 approaches the rear surface 41 of the hood 40 as it moves from the visible region 56b toward the invisible region 56a, and is connected to each of the ends 47h, 47m of the hood 40.

[0034] In the cross section of the hood 40 and the shielding portion 50, the length of the depth of the eaves portion 43 (hereinafter also referred to as the hood margin), in other words, the cross-sectional width of the shielding portion 50 along the front-to-rear direction (hereinafter referred to as the wall width w), varies continuously in the width direction WD (see FIG. 3). The wall width w of the shielding portion 50 is the dimension from the leading edge 44 (see FIGS. 4 to 6) of the hood 40 that protrudes furthest toward the occupant (rearward Go) to the position where the back surface 52 of the shielding portion 50 and the underside surface 41 of the hood 40 intersect. The wall width w is greatest at the center in the width direction WD (see FIG. 6) and gradually decreases toward each end region 56h, 56m. In this way, the wall width w increases as the inclination of the display 20 relative to the horizontal plane increases (the central portion).

[0035] The cross section of the shielding portion 50 (see FIG. 4 ) is triangular. Specifically, the cross section of the shielding portion 50 is a right-angled triangle in which the back surface 52 facing the display 20 is perpendicular to the back surface 41 of the hood 40. The top edge 54 of the shielding portion 50, which protrudes furthest downward Si, is closer to the front edge FEd of the display surface 21 than the tip edge 44 in the front-to-rear direction. The front edge FEd is the side of the four sides defining the rectangular display surface 21 that is along the width direction WD and is the side farthest from the reflecting surface 31. A viewing surface 53 is formed between the tip edge 44 and the top edge 54, which slopes forward Ze as it extends downward Si. The driver Dv and passenger Pg view the viewing surface 53, which slopes backward.

[0036] As described above, if the cross-sectional shape of the shielding portion 50 is a right triangle, the inclination of the viewing surface 53 relative to the back surface 41 can be made as gentle as possible within the limited hood space. In addition, the wall width w is ensured to be wider at positions where the inclination of the hood 40 is greater. Therefore, even if the inclination of the hood 40 increases or decreases in the width direction WD, the inclination of the viewing surface 53 remains generally constant overall, or becomes closer to horizontal at positions where the inclination of the hood 40 is greater. As a result, the shielding portion 50 is less visually noticeable. In addition, if the cross-sectional shape of the shielding portion 50 is a right triangle, the area of the back surface 52 facing the reflective surface 31 is minimized. Therefore, the phenomenon in which external light reflected by the reflective surface 31 or leaking light from the display 20 is re-reflected by the back surface 52 and reflected in the display area DA (whiteout) is less likely to occur.

[0037] In the first embodiment described above, both the first virtual line VL1 and the second virtual line VL2 connecting the lowest points LEP1, LEP2 of the irises EL1, L2 and the rear edge BEd of the display surface 21 intersect with the shielding portion 50. Therefore, even if the eye points EP1, EP2 are lowered, the driver Dv and the passenger Pg have difficulty viewing the rear side of the display surface 21. In addition, by using one of the first virtual line VL1 and the second virtual line VL2 located on the lower side Si as a reference, the protruding height h of the shielding portion 50 can be appropriately suppressed. As a result of the above, it is possible to make the display 20 invisible to multiple occupants without interfering with their visibility of the virtual image Vi.

[0038] Additionally, in the first embodiment, the inclination of the display 20 with respect to the horizontal plane varies in the width direction WD. The greater the inclination of the display 20, the greater the position where the shielding portion 50 is likely to require a protruding height h. By ensuring such wall width w, the shielding portion 50 is likely to have a shape that makes the protruding height h less noticeable. As a result, the display 20 can be prevented from being seen, while preventing deterioration in the design of the display device 100.

[0039] Furthermore, in the first embodiment, the top edge 54 of the shielding portion 50 that protrudes most downward Si is closer to the display 20 than the tip edge 44 of the hood 40 that protrudes most toward the occupant. Therefore, the shielding portion 50 allows the driver Dv and passenger Pg to view the viewing surface 53 that slopes forward Ze as it extends downward Si. With this inclined position of the viewing surface 53, the protruding height h of the shielding portion 50 is less noticeable than in a configuration in which the viewing surface 53 is provided perpendicular to the back surface 41 of the hood 40. Therefore, deterioration in the design of the display device 100 can be further suppressed.

[0040] Furthermore, in the first embodiment, the protrusion height h of the shielding portion 50 decreases toward the outside in the width direction WD in the end regions 56h, 56m. In this way, the shielding portion 50 having a shape in which the protrusion height h gradually decreases in the end regions 56h, 56m makes the thickness of the hood 40 less noticeable than a shape in which the protrusion height h is maintained in the end regions 56h, 56m. Therefore, the design of the display device 100 can be easily ensured while preventing the display 20 from being seen.

[0041] Additionally, in the first embodiment, the shielding portion 50 is a separate member from the hood 40, and therefore the shielding portion 50 is detachable from the hood 40. Therefore, it becomes possible to retrofit the shielding portion 50 with an appropriate protruding height h according to the body type of the occupant, such as the driver Dv.

[0042] In the first embodiment, the vehicle A corresponds to the "moving body," the reflecting mirror 30 corresponds to the "reflective optical element," and the eaves portion 43 corresponds to the "tip portion." Also, the driver iris EL1 and the passenger iris EL2 each correspond to the "iris," and the driver eyepoint EP1 and the passenger eyepoint EP2 each correspond to the "eyepoint."

[0043] Second Embodiment A second embodiment of the present disclosure shown in FIGS. 9 and 10 is a modified example of the first embodiment. A display device 100 according to the second embodiment is electrically connected to a driver monitor 27 and a passenger monitor 28. The driver monitor 27 and the passenger monitor 28 each include a near-infrared light source, a near-infrared camera, and a control unit for controlling them. The driver monitor 27 is installed on the top surface of the steering column with the near-infrared camera facing the headrest of the driver's seat (see FIGS. 1 and 2). The driver monitor 27 uses the near-infrared camera to capture an image of the head of the driver Dv illuminated with near-infrared light from the near-infrared light source. The passenger monitor 28 is installed on the top surface of the instrument panel 10 in front of the passenger Pg Ze. The passenger monitor 28 uses the near-infrared camera to capture an image of the head of the passenger Pg illuminated with near-infrared light from the near-infrared light source.

[0044] The control unit analyzes the images captured by the near-infrared cameras in the driver monitor 27 and the passenger monitor 28. The control unit extracts occupant status information, such as the positions and line-of-sight directions of the eye points EP1 and EP2 of the driver Dv and the passenger Pg, and the degree of eye opening, from the captured images and sequentially provides the information to the display device 100. The driver monitor 27 and the passenger monitor 28 may be provided integrally with the display device 100 and hidden by the reflecting mirror 30, the shielding unit 50, or the like.

[0045] The display device 100 includes a display ECU 60 that includes a processor, RAM, a storage unit, an input / output interface, and a bus connecting these. The processor is hardware for arithmetic processing that is coupled to the RAM. The processor includes at least one arithmetic core, such as a CPU (Central Processing Unit) and a GPU (Graphics Processing Unit). The display ECU 60 has functional units, such as an eyepoint grasping unit 61 and a display control unit 63, that are implemented by the processor executing a display control program stored in the storage unit.

[0046] The eye point grasping unit 61 acquires occupant status information from the driver monitor 27 and the passenger monitor 28. The eye point grasping unit 61 grasps the position of the driver's eye point EP1 based on the occupant status information acquired from the driver monitor 27. The eye point grasping unit 61 grasps the position of the passenger's eye point EP2 based on the occupant status information acquired from the passenger monitor 28.

[0047] The display control unit 63 controls the display of the display image Di by each display 20. The display control unit 63 adjusts the brightness of the display image Di by each display 20. When the positions of the eyepoints EP1 and EP2 grasped by the eyepoint grasping unit 61 deviate from the position Si below each of the irises EL1 and EL2, the display control unit 63 reduces the display brightness of the display image Di on the display surface 21.

[0048] The second embodiment described so far also achieves the same effect as the first embodiment, and the shielding portion 50 can prevent the display image Di on the display surface 21 from being cut off while not obstructing the visibility of the virtual image Vi (see Figure 1) for multiple occupants.

[0049] Additionally, in the second embodiment, when the positions of the eye points EP1, EP2 grasped by the eye point grasping unit 61 deviate from the position below Si of the irises EL1, EL2, the display control unit 63 reduces the display brightness of the display image Di. Therefore, even in a scene where the driver Dv or the passenger Pg loses their posture and the occupant's line of sight LS passes below Si of the top edge 54, it is possible to make the display image Di displayed on the display surface 21 less noticeable. As a result, it is not necessary to make the shielding portion 50 excessively large in consideration of the loss of posture, and the design of the display device 100 can be ensured without interfering with the visibility of the virtual image Vi.

[0050] In addition, if the reflectance of the reflective optical element can be controlled by the display ECU 60, control may be performed to increase the reflectance of the reflective optical element in accordance with a decrease in the display brightness of the display image Di so as to compensate for the decrease in brightness.

[0051] (Third embodiment) 9, 11, and 12 is a modification of the second embodiment. In the display device 100 according to the third embodiment, the display control unit 63 moves the position of the display image Di to be displayed as content on each display 20 along the display surface 21 in accordance with the positions of the eyepoints EP1 and EP2 grasped by the eyepoint grasping unit 61.

[0052] When the positions of the eye points EP1, EP2 deviate from the positions Si below the irises EL1, EL2 (see FIG. 11 ), the display control unit 63 moves the display position of the display image Di on the display surface 21 in a direction approaching the shielding portion 50 (rearward Go). The display image Di moves in a direction away from the rear edge BEd. For example, when the driver Dv loses a large amount of posture, the display control unit 63 identifies a range (see shielding range BA in FIG. 11 ) in which the occupant's line of sight LS from the driver's eye point EP1 toward the display surface 21 is blocked by the shielding portion 50. The display control unit 63 moves the display image Di within the shielding range BA. The display control unit 63 may move only a portion of the display images Di displayed on the display surface 21, or may move all of the display images Di displayed on the display surface 21 while maintaining their relative positions.

[0053] The display control unit 63 moves the display position of the display image Di on the display surface 21 in a direction approaching the shielding unit 50 (rearward Go) in accordance with the upward movement of the positions of the eye points EP1 and EP2. For example, when the head of the driver Dv moves upward Ue and the driver eye point EP1 is located at the top of the driver iris EL1, the display area DA shielded by the shielding unit 50 becomes larger. The display control unit 63 specifies a range (see hidden area HA in FIG. 12) in which the virtual image Vi (see FIG. 1) of the display image Di formed by the reflecting surface 31 becomes invisible due to the driver eye point EP1 moving upward Ue. The display control unit 63 moves the display image Di toward the occupant so as to move out of the hidden area HA.

[0054] The display control unit 63 provides a margin on the display surface 21 of each display 20 in advance, and shifts the entire display image Di out of the hidden area HA in accordance with the movement of the driver eye point EP1 and the passenger eye point EP2. When multiple display images Di (contents) are displayed on the display surface 21, the display control unit 63 defines a priority for each display image Di. The display control unit 63 sets display images Di such as legal indications and telltale warning lights as high-priority contents. When the display control unit 63 cannot shift the entire display image Di, it preferentially moves legal indications and telltale warning lights out of the hidden area HA to enable the driver Dv to view the virtual image Vi.

[0055] The third embodiment described so far also achieves the same effects as the first embodiment and can prevent the display image Di from being cut off while not interfering with the visibility of the virtual image Vi. Specifically, in the third embodiment, when the positions of the eye points EP1 and EP2 deviate from the positions below the irises EL1 and EL2, the display control unit 63 moves the display position of the display image Di on the display surface 21 toward the shielding portion 50. Therefore, even in a scene where the driver Dv or passenger Pg loses posture and the occupant's line of sight LS passes below the top edge 54, the shielding portion 50 can hide the display image Di. As a result, the shielding portion 50 does not need to be made excessively large in consideration of posture loss, and the design of the display device 100 is less likely to be impaired.

[0056] Additionally, in the third embodiment, in response to upward movement of the positions of the eye points EP1 and EP2, the display control unit 63 moves the display position of the display image Di on the display surface 21 in a direction closer to the shielding unit 50. This prevents the virtual image Vi of the display image Di from being obscured by the shielding unit 50.

[0057] (Fourth embodiment) The fourth embodiment of the present disclosure shown in FIGS. 13 and 14 is another modified example of the first embodiment. In a display device 100 according to the fourth embodiment, a shielding portion 50 is formed of a flexibly deformable material such as silicone. The shielding portion 50 is provided with a plurality of extrusion mechanisms 480. The extrusion mechanisms 480 are arranged at intervals from each other in the width direction WD. The extrusion mechanisms 480 extrude the top edge 54 downward Si at a plurality of locations on the shielding portion 50. The extrusion mechanisms 480 individually increase or decrease the protrusion height h of the shielding portion 50 at a plurality of locations (see dashed lines in FIG. 14). The extrusion mechanisms 480 may extrude the shielding portion 50 mechanically, or may extrude the shielding portion 50 using air pressure or the like.

[0058] The display ECU 60 further includes a shielding control unit 65 in addition to the eye point grasping unit 61 and the display control unit 63. The shielding control unit 65 controls the operation of each push-out mechanism 480 in accordance with the positions of the eye points EP1, EP2 (see FIGS. 4 and 5) grasped by the eye point grasping unit 61. The shielding control unit 65 adjusts the protrusion height h at each point so that the intersection state between the shielding unit 50 and both the first virtual line VL1 and the second virtual line VL2 (see FIGS. 4 and 5) is maintained.

[0059] In the fourth embodiment described above, the shape of the shielding portion 50 is changed depending on the positions of the driver's eye point EP1 and the passenger's eye point EP2. Therefore, the same effect as in the first embodiment can be achieved, and it is possible to make the display 20 invisible while not interfering with the visibility of the virtual image Vi (see FIG. 1). In the fourth embodiment, the push-out mechanism 480 corresponds to the "adjustment mechanism."

[0060] Fifth Embodiment 15 to 17 show a fifth embodiment of the present disclosure, which is yet another modification of the first embodiment. In a display device 100 according to the fifth embodiment, the entire display area DA is covered with a plate-shaped ornament 550. The ornament 550 protects the display 20 and the reflector 30 by covering the opening of the display device 100. A large number of light control films 580 are arranged in a matrix on the ornament 550 (see FIG. 16).

[0061] The light control film 580 switches between a transmissive state in which light passes through and a light-blocking state in which light is blocked (see the dotted areas in FIGS. 16 and 17) by changing the light transmittance. When the light control film 580 in the upper Ue viewed from the hood 40 is in the light-blocking state, a blocking portion 50 that prevents the display 20 from being seen is formed.

[0062] The shading control unit 65 controls the transmittance of each light control film 580 by controlling the application of voltage to each light control film 580. The shading control unit 65 can individually switch between the transmission state and the shading state of each light control film 580. The shading control unit 65 changes the transmittance of each light control film 580 according to the position of each eyepoint EP1, EP2 (see FIGS. 4 and 5) grasped by the eyepoint grasping unit 61. The shading control unit 65 increases or decreases the number of light control films 580 in the shading state so that the intersection state between the shading portion 50 and both the first virtual line VL1 and the second virtual line VL2 (see FIGS. 4 and 5) is maintained, thereby expanding or contracting the opaque range forming the shading portion 50. Based on such control by the shading control unit 65, each light control film 580 moves its top edge 54 upward Ue or downward Si in a stepwise manner, allowing the protruding height h of the shading portion 50 to be adjusted.

[0063] In addition, the shading control unit 65 changes the shape of the shading unit 50 depending on the content to be displayed in the display area DA. The shading control unit 65 enables a private view for the driver Dv or the passenger Pg. When video content is displayed in the area in front of the passenger Pg, the shading control unit 65 sets the private view mode (see FIG. 17) to a light-blocking state for all of the light control films 580 in the center of the width direction. As a result, the driver Dv cannot view the video content while driving. This viewing restriction allows the video content to be provided to the passenger Pg without interfering with the driver Dv's driving.

[0064] In the fifth embodiment described above, the opaque range forming the shielding portion 50 is expanded or contracted depending on the positions of the driver's eye point EP1 and the passenger's eye point EP2. Therefore, the same effect as in the first embodiment can be achieved, and it is possible to make the display 20 invisible while not interfering with the visibility of the virtual image Vi (see FIG. 1 ).

[0065] (Sixth embodiment) 18 is yet another modified example of the first embodiment. A display device 600 according to the sixth embodiment does not include a configuration corresponding to the shielding portion 50 (see FIG. 1) of the above-described embodiment. In the display device 600, each display 20 is held by the hood 40 with the display surface 21 aligned along one of the first virtual line VL1 (see FIG. 4) and the second virtual line VL2, whichever is located on the lower side Si.

[0066] Specifically, in the area in front of the driver Dv, the second virtual line VL2 is located below the first virtual line VL1 (see FIG. 7). Therefore, the display 20 disposed in the area in front of the driver Dv is held by the holding portion 42 of the hood 40 with the display surface 21 aligned along the second virtual line VL2. The back surface 41 forming the holding portion 42 is also inclined along (parallel to) the second virtual line VL2 in the front-to-rear direction, similar to the display surface 21. The rear edge BEd and the front edge FEd of the display surface 21 are both located on the second virtual line VL2. In the sixth embodiment, if the second virtual line VL2 connecting an arbitrary point on the rear edge BEd (for example, the midpoint in the width direction WD) and the lowest point LEP2 intersects with the front edge FEd, the display surface 21 of the display 20 is considered to be aligned with the second virtual line VL2.

[0067] According to the above-described arrangement of the display 20, when the driver's eye point EP1 is located at the lowest point LEP1 (see FIG. 4), the driver Dv cannot see the display surface 21 of the display 20 arranged in the area directly in front of him / her because it is blocked by the eaves portion 43.

[0068] On the other hand, in the area in front of the passenger Pg, the first imaginary line VL1 is located below the second imaginary line VL2 (see FIG. 7). Therefore, the display 20 disposed in the area in front of the passenger Pg is held by the holding portion 42 of the hood 40 with the display surface 21 aligned along the first imaginary line VL1. The rear edge BEd and the front edge FEd of the display surface 21 are both located on the first imaginary line VL1. Even in this case, if the first imaginary line VL1 connecting any point on the rear edge BEd and the lowest point LEP1 (see FIG. 4) intersects with the front edge FEd, the display 20 is considered to have its display surface 21 aligned with the first imaginary line VL1.

[0069] According to the above-described arrangement of the display 20, when the passenger eye point EP2 is located at the lowest point LEP2, the passenger Pg cannot see the display surface 21 of the display 20 arranged in the area in front of him / her because it is blocked by the eaves portion 43.

[0070] In the sixth embodiment described so far, the display 20 is held by the hood 40 with the display surface 21 aligned along one of the first virtual line VL1 and the second virtual line VL2, whichever is located below Si. Therefore, even if the driver Dv and the passenger Pg's eye points EP1 and EP2 are lowered, it is difficult for them to view the far side of the display surface 21. Furthermore, since the shielding portion 50 is not required, it is easy to view the virtual image Vi. As a result, it is possible to make the display 20 invisible to multiple occupants without interfering with their visibility of the virtual image Vi.

[0071] (Other embodiments) Although several embodiments of the present disclosure have been described above, the present disclosure should not be construed as being limited to the above-described embodiments, and can be applied to various embodiments and combinations within the scope that does not deviate from the gist of the present disclosure.

[0072] In the display device 100 according to the first modification of the first embodiment, as shown in FIG. 19 , the shape of the end regions 56h, 56m of the shielding portion 50 differs from that of the first embodiment. The left and right ends 57h, 57m of the shielding portion 50 are located inside the left and right ends 47h, 47m of the hood 40 in the width direction WD. More specifically, the shielding portion 50 is not provided in the invisible region 56a of each end region 56h. The ends 57h, 57m of the shielding portion 50 are located in the cut-off regions 56b. In each cut-off region 56b, the shielding portion 50 gradually decreases in protrusion height h toward the outside in the width direction, and each end 57h, 57m is connected to the rear surface 41 of the hood 40. In this way, by not providing the shielding portion 50 in the invisible region 56a where the display 20 is not visible, the overall thickness of the shielding portion 50 can be made to appear thinner. Additionally, in Modification 1, the inclination of the hood 40 with respect to the horizontal plane is greatest in each front range of the driver Dv and passenger Pg. The protruding height h of the shielding portion 50 is greatest in each front range. As in Modification 1 above, the protruding height h of the shielding portion 50 may be made greater as the inclination of the display 20 increases. By setting the protruding height h of the shielding portion 50 in this manner, it is possible to reliably prevent the display 20 from being seen.

[0073] In the display device 100 according to the second modification of the first embodiment, as shown in Fig. 20, the wall width w of the shielding portion 50 is smaller than the length of the hood margin. A margin portion 47 that is continuous with the rear surface 41 of the hood 40 is formed between the leading edge 44 and the shielding portion 50. If the length of the eave portion 43 in the front-to-rear direction can be sufficiently secured, as in the second modification, the wall width w of the shielding portion 50 can be made shorter than the margin length of the hood 40, and the margin portion 47 where the shielding portion 50 is not provided can be formed. Such a margin portion 47 has the effect of making the eave portion 43 appear thinner, thereby improving the appearance of the display device 100.

[0074] It is preferable that the wall width w is larger than the protrusion height h. However, in an area where the wall width w cannot be ensured, the protrusion height h may be larger than the wall width w. This maintains the visibility countermeasure effect of the display 20. On the other hand, the relationship (ratio) between the wall width w and the protrusion height h may be maintained throughout the entire shielding portion 50.

[0075] In the display device 100 according to Modification 3 of the first embodiment, as shown in FIG. 21 , the eaves portion 43 of the hood 40 curves downward Si as it extends rearward Go. The curved shape of the eaves portion 43 forms a shielding portion 50. The tip edge 44 of the eaves portion 43 corresponds to the top edge 54 of the shielding portion 50. The top edge 54 is located below the driver visibility prevention line SL1 and the passenger visibility prevention line SL2 so as to be able to block the first imaginary line VL1 and the second imaginary line VL2. Even in Modification 3, the overall thickness of the shielding portion 50 can be made to appear thinner. In addition, even with the shielding portion 50 integrated with the eaves portion 43, it is possible to prevent the display 20 from being seen from the lowest points LEP1 and LEP2.

[0076] In the display device 100 according to the fourth modification of the first embodiment, the hood 40 and the shielding portion 50 are integrally molded, as shown in Fig. 22. In the fourth modification, the shielding portion 50 also has a top edge 54 that protrudes below the first and second imaginary lines VL1 and VL2 so as to intersect with both the first and second imaginary lines VL1 and VL2. With this configuration, the boundary between the hood 40 and the shielding portion 50 becomes less noticeable, which can improve the appearance of the display device 100.

[0077] In the display device 100 according to the fifth modification of the first embodiment, as shown in Fig. 23, the cross section of the shielding portion 50 is formed into an isosceles triangle shape. That is, the surface width of the viewing surface 53 and the surface width of the back surface 52 are approximately the same. In the fifth modification, the shielding portion 50 also has an apex edge 54 positioned below the first and second imaginary lines VL1 and VL2 so as to intersect with both the first and second imaginary lines VL1 and VL2, thereby preventing the display 20 from being seen from the lowest points LEP1 and LEP2. Note that the back surface 52, which faces the reflective surface 31, may be provided with a coating or texture to suppress reflection of external light reflected by the reflective surface 31 and light leaking from the display 20.

[0078] In the display device 100 according to Modification 6 of the first embodiment, as shown in FIG. 24 , the shielding portion 50 has a hollow structure and includes an inclined plate portion 50a and a support wall 50b. This is desirable because light is absorbed in the hollow portion. The inclined plate portion 50a slopes forward Ze from the tip edge 44 toward the downward direction Si. The support wall 50b secures the inclined plate portion 50a to the back surface 52 of the eave portion 43. In Modification 6, the shielding portion 50 also has its top edge 54 positioned below the first and second imaginary lines VL1 and VL2 so as to intersect both lines, thereby preventing the display 20 from being seen from the lowest points LEP1 and LEP2. Additionally, in Modification 6, external light reflected by the reflective surface 31 and light leaking from the display 20 enter the space between the eave portion 43 and the inclined plate portion 50a. Therefore, re-reflection toward the reflecting surface 31 is suppressed, and the virtual image is less likely to appear whitish.

[0079] In the display device 100 according to the seventh modification of the first embodiment, the shielding portion 50 is formed in a flat plate shape, as shown in Fig. 25. The shielding portion 50 stands upright from the back surface 41 facing the leading edge 44 toward the downward Si. In the seventh modification, the top edge 54 of the shielding portion 50 is also positioned below Si below the first imaginary line VL1 and the second imaginary line VL2 so as to intersect with both these imaginary lines VL1 and VL2, thereby preventing the display 20 from being seen from each of the lowest points LEP1 and LEP2.

[0080] In the display device according to Modification 8 of the second and third embodiments, the eye point grasping unit is connected to the driver monitor but not to the passenger monitor. The display device performs control such as reducing the brightness or moving the display image depending on the position of the driver's eye point. As in Modification 8, control such as reducing the brightness or moving the display image may be performed for only one of the driver and the passenger.

[0081] The display supported on the back surface of the hood is not limited to an organic EL display as in the above embodiment. For example, a liquid crystal display with a backlight, a display consisting of multiple light-emitting diodes, etc. can be used as the display device. Furthermore, the display may be configured to display a full-color image, or may be configured to display only an image of a specific color.

[0082] The display device according to the ninth modification of the first embodiment has the same number of reflecting mirrors 30 as the number of displays 20 (for example, five). The reflecting mirrors 30 are arranged in the width direction WD of the vehicle A, similar to the multiple displays 20. A reflecting mirror 30 slightly larger in size than one display 20 is arranged below Si of the display 20. The multiple reflecting mirrors 30 form the left end region, the region in front of the driver, the vehicle center region, the region in front of the passenger, and the right end region of the display area DA with their respective reflective surfaces 31. By arranging the multiple reflecting mirrors 30, the seams between the reflective surfaces 31 are made less noticeable, and the display area DA consisting of the multiple reflective surfaces 31 can be made to look like a pseudo-large display.

[0083] The display area provided on the display device does not have to be pillar-to-pillar as long as it is visible to multiple occupants. For example, independent display areas may be provided in the area in front of the driver and in the central area in the width direction. Furthermore, independent display areas may be provided in the area in front of the driver, the central area in the width direction, and the area in front of the passenger. These display areas may be vertically elongated. Furthermore, one display and one reflector arranged across the area in front of the driver and the central area in the width direction may form a continuous display area. Furthermore, the target for which the shielding portion prevents the display from being seen is not limited to a passenger sitting in the front passenger seat. The protruding height of the shielding portion may be specified taking into account the eye points and irises of passengers sitting in the rear seats.

[0084] The display device according to the present disclosure can be mounted on a right-hand drive vehicle. Furthermore, the display device according to the present disclosure can be mounted on a moving body other than a vehicle. For example, the display device according to the present disclosure can be mounted on a moving body such as heavy machinery, a railway vehicle, a tram, or an aircraft operated at a work site, or even on a simulated moving body such as a driving toy or a driving simulator arranged in an amusement facility or the like.

[0085] The controller and methods described herein may be implemented by a special-purpose computer comprising a processor programmed to perform one or more functions embodied in a computer program. Alternatively, the apparatus and methods described herein may be implemented by special-purpose hardware logic circuitry. Alternatively, the apparatus and methods described herein may be implemented by one or more special-purpose computers comprising a processor executing a computer program in combination with one or more hardware logic circuits. Furthermore, the computer program may be stored as instructions executed by a computer on a computer-readable non-transitory storage medium. [Explanation of symbols]

[0086] A: Vehicle (moving body), BEd: Rear edge, EL1: Driver iris, EL2: Passenger iris, EP1: Driver eye point, EP2: Passenger eye point, DA: Display area, Di: Display image, Dv: Driver, LEP1, LEP2: Lowest point, Pg: Passenger, Si: Downward, Ue: Upward, VL1: First virtual line, VL2: Second virtual line, Vi: Virtual image, WD: Width direction, h: Projection height, w: Wall width, 20: Display, 21: Display surface, 30: Reflector (reflective optical element), 31: Reflecting surface, 40: Hood, 41: Back surface, 43: Eaves portion (tip portion), 44: Tip edge, 47h, 47m: (Hood) edge, 50: Shielding portion, 54: Top edge, 56h, 56m (Shielding portion) edge region, 57h, 57m (shielding portion) edge, 61 eye point grasping portion, 63 display control portion, 480 extrusion mechanism (adjustment mechanism), 580 light control film, 100, 600 display device

Claims

1. A display device that displays a virtual image (Vi) visible to multiple occupants of a moving body (A), At least one display (20) that displays the display image (Di) formed as the virtual image on a display surface (21); At least one reflective optical element (30) having a reflective surface (31) that reflects light of the display image toward the occupant, and forming a display area (DA) extending along a width direction (WD) of the moving body by the reflective surface; a hood (40) formed in a plate shape that is positioned above the reflecting optical element (Ue) and covers the reflecting surface, and that holds the display by a back surface (41) that is positioned on the reflecting optical element side; a shielding portion (50) that protrudes downward (Si) from a tip portion (43) of the hood that is located closer to the occupant than the display and that conceals the display held on the back surface, a virtual line connecting the lowest point (LEP1) of an iris (EL1) where the eye point (EP1) of the driver (Dv) who is the occupant is assumed to be located, the lowest point (LEP1) of the iris employing a 90th percentile iris, and the farthest back edge (BEd) of the display surface from the shielding portion, is defined as a first virtual line (VL1); The iris (EL2) is assumed to be the iris where the eye point (EP2) of the passenger (Pg) sitting in the front passenger seat, who is another passenger than the driver, is located. The iris is the same 90th percentile iris as the driver's iris. If the imaginary line connecting the lowest point (LEP2) of the iris and the rear edge of the iris is a second imaginary line (VL2), A display device in which the protruding height (h) from the tip portion of the shielding portion is determined based on one of the first virtual line and the second virtual line that is located below, and varies in the width direction so that both the first virtual line and the second virtual line intersect with the shielding portion.

2. the inclination of the display relative to a horizontal plane, the inclination being upward as it goes toward the rear (Go) of the moving body, and varying in the width direction; The display device according to claim 1 , wherein the wall width (w) of the shielding portion along the front-rear direction of the moving body increases as the tilt of the display increases.

3. the inclination of the display relative to a horizontal plane varies in the width direction; The display device according to claim 1 or 2, wherein the protrusion height increases as the tilt of the display increases.

4. 4. The display device according to claim 1, further comprising an eye point grasping unit (61) for grasping the position of an eye point of at least one of the driver and the passenger.

5. and an adjustment mechanism (480) for individually increasing or decreasing the protrusion height at a plurality of locations of the shielding portion.

5. The display device according to claim 4, wherein the adjustment mechanism adjusts the protrusion height so that an intersection state between both the first virtual line and the second virtual line and the shielding portion is maintained according to the position of the eyepoint grasped by the eyepoint grasper.

6. A light control film (580) that forms the shielding portion by changing the transmittance, The display device described in claim 4, wherein the light control film expands or contracts the opaque range that forms the shielding portion so that the intersection state between both the first virtual line and the second virtual line and the shielding portion is maintained depending on the position of the eyepoint grasped by the eyepoint grasper.

7. The display device according to any one of claims 4 to 6, further comprising a display control unit (63) that reduces the display brightness of the display image on the display surface when the eyepoint position grasped by the eyepoint grasping unit deviates from the lower side of the iris.

8. The display device according to any one of claims 4 to 6, further comprising a display control unit (63) that moves the display position of the display image on the display surface in a direction closer to the shielding portion when the eyepoint position grasped by the eyepoint grasping unit deviates from the lower portion of the iris.

9. The display device according to claim 7 or 8, wherein the display control unit moves the display position of the display image on the display surface in a direction approaching the shielding portion in response to upward movement (Ue) of the eye point position.

10. The display device according to any one of claims 1 to 9, wherein a top edge (54) of the shielding portion is closer to the display than a leading edge (44) of the hood that protrudes toward the occupant.

11. 11. The display device according to claim 1, wherein the protrusion height decreases toward the outside in the width direction in end regions (56h, 56m) of the shielding portion in the width direction.

12. 12. The display device according to claim 11, wherein the ends (57h, 57m) of the shielding portion are located more inward than the ends (47h, 47m) of the hood in the width direction.

13. A display device that displays a virtual image (Vi) visible to multiple occupants of a moving body (A), At least one display (20) that displays the display image (Di) formed as the virtual image on a display surface (21); At least one reflective optical element (30) having a reflective surface (31) that reflects light of the display image toward the occupant, and forming a display area (DA) extending along a width direction (WD) of the moving body by the reflective surface; a hood (40) formed in a plate shape that is positioned above the reflecting optical element (Ue) and covers the reflecting surface, and that holds the display by a back surface (41) that is positioned on the reflecting optical element side; a first virtual line (VL1) connecting the lowest point (LEP1) of the iris (EL1) where the eye point (EP1) of the driver (Dv) who is the occupant is assumed to be located, the lowest point (LEP1) of the iris when a 90th percentile iris is adopted, and the farthest rear edge (BEd) of the display surface from the leading edge (44) of the hood; The iris (EL2) is assumed to be the iris where the eye point (EP2) of the passenger (Pg) sitting in the front passenger seat, who is another passenger than the driver, is located. The iris is the same 90th percentile iris as the driver's iris. If the imaginary line connecting the lowest point (LEP2) of the iris and the rear edge of the iris is a second imaginary line (VL2), The display device is held by the hood in a position where the display surface is aligned along one of the first virtual line and the second virtual line that is located lower (Si).

Images