JP2019142305A - On-vehicle transmission display device - Google Patents

Abstract

To provide an on-vehicle transmission display device which covers a visual field of a crewman in a wide range with a simple configuration, and of which convenience is improved.SOLUTION: In an on-vehicle transmission display device, a screen 2, which is formed in a planer shape having flexibility and light permeability, and displays in such a manner that a virtual image is overlapped on a transparent scene, is provided. A slide mechanism 3, which drives the screen 2 in a vehicle longitudinal direction, is provided along a ceiling plane of a cabin of a vehicle. A rotating mechanism 4, which rotationally drives the screen 2 around a rotary shaft which extends in a vehicle width direction, is provided. A bending deformation mechanism 5, which is fitted to one end side of the screen 2 along the rotary shaft, and of which vehicle width direction both ends perform bending deformation of the screen 2 in a direction in which a crewman approaches, is provided.SELECTED DRAWING: Figure 4

Description

  The present invention relates to an in-vehicle transmission display device provided in a vehicle interior of a vehicle.

  Conventionally, there is a technique for displaying various information by attaching a display device to a vehicle sun visor. For example, a technique is known in which an image of a blind spot area blocked by a sun visor is captured by a camera and the captured image is displayed on a display device. With such a technique, it is possible to give the occupant the feeling of seeing the scenery in front of the vehicle through the sun visor. A head-up display that superimposes and displays a landscape and a virtual image in front of the vehicle using a half mirror has also been proposed. The head-up display can display a virtual image that appears to exist farther than the actual display (see Patent Documents 1 and 2).

Japanese Unexamined Patent Publication No. 2017-034615 Japanese Unexamined Patent Publication No. 2015-045690

  The existing display device as described above is basically formed in a shape that covers only the front range that is the traveling direction of the vehicle in the field of view of the occupant. Therefore, the area for displaying various information is narrow, and it is difficult to increase the amount of information and the information density displayed on the screen. In addition, in order to introduce digital environment expression technologies such as VR (Virtual Reality), AR (Augmented Reality), and MR (Mixed Reality) in the future, It is desirable to provide a display device that covers a wide area. On the other hand, such a display device is easily increased in size and difficult to be provided in the passenger compartment.

  One of the objects of the present invention was devised in view of the above problems, and provides an in-vehicle transmissive display device that can cover the occupant's field of view with a simple configuration and can improve convenience. It is to be. It should be noted that the present invention is not limited to this purpose, and is an operational effect that is derived from each configuration shown in “Mode for Carrying Out the Invention” to be described later. Can be positioned as a purpose.

  (1) The disclosed in-vehicle transmission display device is an in-vehicle transmission display device provided in a vehicle interior of a vehicle, and is formed in a planar shape having flexibility and light transmission, and a virtual image is superimposed on a transmitting scene. Provide a screen to display. In addition, a slide mechanism that drives the screen in the vehicle front-rear direction along the ceiling surface in the vehicle interior, and a rotation mechanism that rotates the screen about a rotation shaft extending in the vehicle width direction are provided. Furthermore, a bending deformation mechanism is provided that is attached to one end side of the screen along the rotation axis and that bends and deforms the screen in a direction in which both end portions in the vehicle width direction approach the occupant.

(2) The bending deformation mechanism is fixed to one end side of the screen, and a plurality of units connected in a swingable manner to each other; an elastic member interposed between the adjacent units; and the vehicle width It is preferable to have a wire member that pulls the unit located at both ends in the direction toward the center of the screen.
(3) The screen is a light-shielding panel, and a light-shielding panel is provided for identifying the occupant's viewpoint position and light source position relative to the screen, and at least a portion corresponding to the light source position on the screen as seen from the occupant. It is preferable to include a display unit that displays a virtual image of
(4) It is preferable to provide a storage portion formed between a headlining that forms a ceiling surface in the vehicle interior and a roof panel that covers the headlining.

  By providing three mechanisms for changing the position and shape of the screen, it becomes easy to store the screen according to the situation and to arrange it so as to cover the field of view of the occupant. In addition, by covering and deforming both ends of the screen in the vehicle width direction so as to approach the occupant, the coverage range of the field of view can be expanded, and convenience can be improved. For example, it is possible to enhance the real image feeling and the realistic sensation of the virtual image superimposed on the screen, and to improve the adaptability to display technologies such as VR, AR, and MR.

It is a figure which shows the vehicle interior of the vehicle to which the vehicle-mounted transmissive display apparatus of this embodiment was applied. It is a figure for demonstrating the function of a vehicle-mounted transparent display apparatus. It is a figure which shows the relationship between a screen and a passenger | crew's visual field. It is a perspective view which shows the structure of a vehicle-mounted transmissive display apparatus. It is a top view (at the time of use) of a vehicle-mounted transmissive display device. It is a top view (at the time of accommodation) of a vehicle-mounted transmissive display apparatus. It is a perspective view which shows the upper end side of a screen. It is a figure which shows the structure of a snake part. (A), (B) is a perspective view of a unit. (A), (B) is a figure for demonstrating operation | movement of a serpentine part.

  Hereinafter, an in-vehicle transmission display device 1 as an embodiment will be described with reference to the drawings. The embodiment described below is merely an example, and there is no intention of excluding various modifications and technical applications that are not explicitly described in the following embodiment. Each configuration of the present embodiment can be implemented with various modifications without departing from the spirit thereof. Further, they can be selected as necessary, or can be appropriately combined.

[1. Device configuration]
FIG. 1 is a diagram showing an in-vehicle transmission display device 1 provided in a vehicle interior of the vehicle 10, and FIG. 2 is a longitudinal sectional view of the vehicle 10. The in-vehicle transmissive display device 1 is a display device including at least a light-transmissive screen 2, and a background on the other side of the screen 2 and images (CG images, characters, patterns, etc.) displayed on the screen 2 are displayed. It is displayed in a superimposed manner. In general, the in-vehicle transmissive display device 1 can draw a virtual object on the screen 2 at a position and size suitable for the scenery seen by the passenger by grasping the viewpoint position of the passenger with respect to the screen 2. . By matching the rendered image to the coordinate system in the occupant's field of view, the sense of presence of the superimposed display is improved.

  As shown in FIG. 2, the in-vehicle transmission display device 1 is stored in a storage unit 19 between a head lining 16 that forms a ceiling surface in a vehicle compartment and a roof panel 17 that covers the head lining 16. Inside the storage portion 19, a plurality of roof cross members 18 extending in the vehicle width direction are arranged at intervals in the vehicle front-rear direction. The in-vehicle transmission display device 1 is attached to these roof cross members 18. When the in-vehicle transmissive display device 1 is not used, the entire in-vehicle transmissive display device 1 is accommodated in the storage unit 19 and is not visible to the passenger. On the other hand, when the in-vehicle transmissive display device 1 is used, the screen 2 moves to the front of the occupant's field of view and is developed so as to cover a wide range of the field of view. As shown in FIG. 3, the range occupied by the screen 2 in the occupant's field of view is a range that covers not only the front (front) of the occupant but also the left side and the right side.

  The structure of the in-vehicle transmission display device 1 is illustrated in FIGS. The in-vehicle transmissive display device 1 is provided with a screen 2, a slide mechanism 3, a rotation mechanism 4, and a bending deformation mechanism 5. The screen 2 is formed in a planar shape having flexibility and light transmission, and has a function of superimposing and displaying a virtual image on a transmitted scene. Specific examples of the screen 2 include a light emitting panel (transparent organic EL (Electro-Luminescence) panel, transparent inorganic EL panel), a light-shielding panel (liquid crystal panel, light control resin panel, electrochromic panel) and the like.

  The slide mechanism 3 is a mechanism for driving the screen 2 in the vehicle front-rear direction along the ceiling surface in the vehicle interior. The slide mechanism 3 has a function of sliding the screen 2 in the front-rear direction with the screen 2 being substantially parallel to the ceiling surface. The rotation mechanism 4 is a mechanism for driving the screen 2 to rotate. The screen 2 is driven to rotate about a rotating shaft extending in the vehicle width direction. In the present embodiment, the shaft 6 extending in the vehicle width direction along the upper end side of the screen 2 serves as the rotation axis. The bending deformation mechanism 5 is a mechanism for bending and deforming the screen 2. The screen 2 is bent in a direction in which both end portions (left and right end portions) in the vehicle width direction approach the occupant. The bending deformation mechanism 5 of the present embodiment is attached to the upper end side of the screen 2 along the rotation axis.

  As shown in FIGS. 4 and 7, the shaft 6 is provided with a snake-like portion 7 and a shaft-like portion 8. The shaft-shaped portion 8 is a shaft-shaped portion (central portion) adjacent to the front end side of the base 30. Moreover, the snake-like part 7 is a part at the left and right ends excluding the shaft-like part 8, and is a part formed so as to be bendable. In the screen 2, the vicinity of the central portion where the upper end side is supported by the shaft-shaped portion 8 is a portion that is always kept flat. On the other hand, the left and right end portions of the screen 2 whose upper end side is supported by the snake-like portion 7 are portions that can be bent and deformed in accordance with the bending deformation of the snake-like portion 7. End shafts 20 are attached to both left and right sides of the screen 2.

  The shaft-like portion 8 of the shaft 6 is pivotally supported by a pair of supports 33 fixed to the front end portion of the flat base 30. Rollers 31 are rotatably attached to the left and right ends of the base 30. Below each roller 31, the rail 21 extended in the vehicle front-back direction is arrange | positioned. The roller 31 is movable along the rail 21 in the vehicle front-rear direction. A bracket 22 for attaching the rail 21 to the roof cross member 18 is fixed to a position in the rail 21 that does not interfere with the roller 31. A rail connecting portion 23 connects between the pair of left and right rails 21. 4 and 5 show only one rail connecting portion 23, a plurality of rail connecting portions 23 may be provided to connect the rails 21 in a ladder shape.

  In FIG. 4, the cross-sectional structure of the roller 31 and the rail 21 is illustrated. In this structure, a cavity extending in the vehicle front-rear direction is provided inside the rail 21, and the roller 31 slides in the cavity. That is, the periphery of the roller 31 is surrounded by the rail 21. With such a structure, even if an unreasonable load is applied to the screen 2, the roller 31 is prevented from being derailed or dropped from the rail 21.

  The slide mechanism 3 includes a slide motor 24, gears 25 and 26, a worm 27, a worm wheel 28, a rod screw 29, and a rotation receiving nut 32. The slide motor 24 is a small electric motor for driving the base 30 in the vehicle longitudinal direction. The sliding motor 24 is fixed on the rail connecting portion 23 and has a function of rotating a pair of worms 27 via gears 25 and 26 when energized. The gears 25 and 26 are speed reducers for increasing the torque of the slide motor 24. The worm 27 and the worm wheel 28 are speed reducers that function as worm gears, and have a function of changing the rotation direction while increasing torque.

  Since the worm wheel 28 is fixed coaxially to the rod screw 29, the rotation of the worm 27 is converted into the rotation of the rod screw 29. At this time, the pair of left and right bar screws 29 rotate at the same speed. On the outer peripheral surface of the bar screw 29, a thread that is screwed with the inner peripheral surface of the rotation receiving nut 32 is formed. The rotation receiving nut 32 is fixed to the upper surface of the base 30 in a state where the rotation receiving nut 32 is screwed with the rod screw 29. By rotating the slide motor 24, the pair of bar screws 29 rotate, and the relative position of the rotation receiving nut 32 with respect to the bar screws 29 changes. As a result, the base 30 supporting the screen 2 slides in the vehicle front-rear direction. FIG. 5 shows a state where the base 30 is separated from the worm wheel 28 (during use, when sliding), and FIG. 6 shows a state where the base 30 is close to the worm wheel 28 (when stored). In order to reverse the direction of movement of the base 30, the direction of rotation of the slide motor 24 may be reversed.

  The rotation mechanism 4 includes a rotation motor 34 and gears 35 and 36. The rotation motor 34 is a small electric motor for driving the screen 2 to rotate. The rotation motor 34 is fixed on the base 30 and has a function of rotating the gears 35 and 36 when energized. The gears 35 and 36 are speed reducers for increasing the torque of the rotation motor 34. The rotation shaft of the gear 35 is coaxial with the rotation motor 34. On the other hand, the gear 36 is fixed to the shaft 6, and the rotation axis of the gear 36 is arranged coaxially with the shaft 6. By rotating the rotation motor 34, the screen 2 rotates, and the rotation angle (elevation angle) of the screen 2 with respect to the base 30 varies. In order to reverse the rotation direction of the screen 2, the rotation direction of the rotation motor 34 may be reversed.

  The bending deformation mechanism 5 includes a bending motor 37, a gear 38, and a toothed belt 39. The bending motor 37 is a small electric motor for bending and deforming the screen 2. The bending motor 37 is fixed on the base 30 and has a function of pulling (or loosening) the toothed belt 39 by rotating the gear 38 when energized. Further, one end of a wire member 42 inserted into the inside of the snake-like portion 7 is fixed to the front end portion of the toothed belt 39. By pulling the toothed belt 39, the wire member 42 is drawn toward the base 30, and the screen 2 is curved and deformed together with the snake 7.

  8 and 9 are diagrams showing the structure of the serpentine portion 7 in a simplified manner. The snake-like portion 7 includes a plurality of units 40, an elastic member 41, and a wire member 42. The unit 40 is a member fixed to the upper end side (one end side) of the screen 2, and each unit 40 is connected to the adjacent unit 40 so as to be able to swing with respect to each other. Each unit 40 has an upper connection hole 44 and a lower connection hole 45 into which a shaft-like pin 46 is loosely fitted, and is provided so as to be swingable about the pin 46 as a rotation shaft. The elastic member 41 is a member (spring, rubber, etc.) that is interposed between adjacent units 40 and elastically connects the units 40.

  A screen support portion 47 that supports the screen 2 is provided on the lower surface of the unit 40. The upper end side of the screen 2 is fitted into the screen support portion 47 and fixed. Each unit 40 is formed with a wire passage 43 through which the wire member 42 passes. The wire passage 43 is provided at a position inside the curve when the screen 2 is bent and deformed. In a state where the wire member 42 is not drawn into the base 30 side, the unit 40 is linearly arranged by the restoring force of the elastic member 41 as shown in FIG. 10A, and the screen 2 becomes flat. On the other hand, when the wire member 42 is drawn to the base 30 side, each unit 40 moves in the rotation direction around the pin 46 due to the tension of the wire member 42. As a result, as shown in FIG. 10B, the unit 40 is arranged in a curved shape, and the screen 2 is curved and deformed into a curved shape.

[2. Control configuration]
As a control example using the in-vehicle transmissive display device 1, control for blocking sunlight and headlight light of other vehicles will be described in detail. This control can be performed when the screen 2 constituted by a light shielding panel (liquid crystal panel, light control resin panel, electrochromic panel) is used. As shown in FIG. 2, the vehicle 10 is provided with an outer camera 14 for grasping a light source position outside the vehicle and an inner camera 15 for grasping a passenger's viewpoint position. Images taken by the outer camera 14 and the inner camera 15 are input to the control device 11.

  The control device 11 is an electronic control device (computer) for controlling display contents on the screen 2. The control device 11 includes a processor (central processing unit), a memory (main memory), a storage device (storage), an interface device, and the like, and is connected to each other via an internal bus. The control device 11 is provided with a specifying unit 12 and a display unit 13. These elements are classified functions of the control device 11 for the sake of convenience. Each element may be described as an independent program, or may be described as a composite program having these functions. Also good.

  The specifying unit 12 specifies the viewpoint position of the passenger with respect to the screen 2 and the light source position with respect to the screen 2. The viewpoint position of the occupant can be specified by recognizing the occupant's face, iris, corneal reflection, and the like from the captured image of the inner camera 15. In addition, the light source position can be specified based on a portion with extremely high luminance (portion where whiteout occurs) in the photographed image of the outer camera 14. Note that the position of the sun can be specified based on the season, time, the position and orientation of the vehicle 10, and the like. Information regarding the viewpoint position and the light source position specified here is transmitted to the display unit 13.

  The display unit 13 displays a light-shielding virtual image at least at a position corresponding to the light source position on the screen 2 when viewed from the passenger. The virtual image here may be a pattern such as a mesh pattern or a hatching pattern, for example, or may be a dimmed image (black rectangular pattern) for reducing the actual amount of light transmitted through the screen 2. . For example, when a headlight of an oncoming vehicle is detected, as shown in FIG. 1, the light of the headlight reaching the passenger's eyes is shielded so that the periphery of the headlight becomes darker (that is, as shown in FIG. 1). ), A virtual image is superimposed and displayed.

[3. Action, effect]
(1) The above-described in-vehicle transmissive display device 1 is provided with three mechanisms (slide mechanism 3, rotation mechanism 4, and bending deformation mechanism 5) for changing the position and shape of the screen 2. Thereby, it becomes easy to store the screen 2 according to a situation, and to arrange | position so that a passenger | crew's visual field may be covered. Moreover, by curving and deforming both ends of the screen 2 in the vehicle width direction so as to approach the occupant, the coverage range of the field of view can be expanded, and convenience can be improved. For example, it is possible to increase the real image feeling, the realistic feeling, and the immersive feeling of the virtual image superimposed and displayed on the screen 2, and to improve the adaptability to the display technology such as VR / AR / MR. Therefore, the sight of the occupant can be covered over a wide range with a simple configuration, and convenience can be improved.

  (2) In the above-described in-vehicle transmissive display device 1, as shown in FIGS. 8 to 10, a plurality of units 40 are connected with the elastic member 41 interposed therebetween, and the wire member 42 inserted through these units 40 is pulled. By doing so, curved deformation is realized. With such a structure, the screen 2 can be easily curved and deformed, and the screen 2 can be disposed so as to reliably cover the field of view of the occupant.

  (3) In the above-described in-vehicle transmissive display device 1, as shown in FIGS. Therefore, when the shading control by the control device 11 as shown in FIG. 2 is performed, the anti-glare effect on the headlights of other vehicles as well as the sun's sunshine can be improved, and the convenience is further improved. Can do.

  (4) The above-described in-vehicle transmission display device 1 can be stored in a storage portion 19 formed between the headlining 16 and the roof panel 17 as shown in FIG. On the other hand, when the screen 2 is used, the screen 2 can be unfolded so as to cover the front and left and right sides of the occupant by sliding and moving the screen 2 in the vehicle front-rear direction and then rotating and bending the screen. Therefore, it is possible to improve the aesthetics of the passenger compartment while improving convenience.

DESCRIPTION OF SYMBOLS 1 Vehicle-mounted transparent display apparatus 2 Screen 3 Slide mechanism 4 Rotating mechanism 5 Bending deformation mechanism 7 Snake-shaped part 10 Vehicle 11 Controller 12 Identification part 13 Display part 14 Outer camera 15 Inner camera 16 Headlining 17 Roof panel 18 Roof cross member 19 Storage Part 24 motor for slide 34 motor for rotation 37 motor for bending 40 unit 41 elastic member 42 wire member

Claims (4)

An in-vehicle transmission display device provided in a vehicle cabin,
A screen that is formed into a flexible and light-transmitting surface and displays a virtual image superimposed on a transparent scene;
A slide mechanism for driving the screen in the vehicle front-rear direction along the ceiling surface in the vehicle interior;
A rotation mechanism for rotating the screen around a rotation axis extending in the vehicle width direction;
A bending deformation mechanism that is attached to one end side of the screen along the rotation axis, and that bends and deforms the screen in a direction in which both end portions in the vehicle width direction approach an occupant;
An in-vehicle transmissive display device comprising: The bending deformation mechanism is
A plurality of units fixed to one end of the screen and connected in a swingable manner to each other;
An elastic member interposed between adjacent units;
The in-vehicle transmissive display device according to claim 1, further comprising: a wire member that pulls the units located at both ends in the vehicle width direction toward a center side of the screen. The screen is a shading panel;
A specifying unit that specifies a viewpoint position and a light source position of the occupant with respect to the screen;
The in-vehicle transmission display device according to claim 1, further comprising: a display unit that displays a light-shielding virtual image at a location corresponding to the light source position on the screen at least when viewed from the occupant. The in-vehicle transmission display according to any one of claims 1 to 3, further comprising a storage portion formed between a head lining forming a ceiling surface in the vehicle interior and a roof panel covering the head lining. apparatus.

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