JP2019014285A - Display device and interior member unit - Google Patents

Abstract

To provide a display device which can properly project an image onto an interior member of a vehicle, and an interior member unit.SOLUTION: A display device 1 applied to an instrument panel unit 100 includes: a projection surface 2 which is provided on a surface of a cabin inner side IN of an interior member 101 provided so as to extend in a vehicle width direction Y crossing a vehicle longitudinal direction X on a front side in the vehicle longitudinal direction X on the cabin inner side IN of the vehicle V, and to face a previously assumed visual inspection position EP in the vehicle longitudinal direction X; and a projector 3 which projects projection light showing an image toward the projection surface 2 provided at a position between the visual inspection position EP and the projection surface 2 to the vehicle longitudinal direction X on the interior member 101.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device and an interior member unit.

  As a conventional display device applied to a vehicle, for example, Patent Document 1 discloses a vehicle display device that captures an image around a host vehicle and projects an image that is a blind spot from the vehicle interior into the vehicle interior from a projector. It is disclosed.

JP 2008-9654 A

  Incidentally, the vehicle display device described in Patent Document 1 described above has room for further improvement in terms of image projection onto an interior member of the vehicle, for example.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a display device and an interior member unit that can appropriately project an image onto an interior member of a vehicle.

  In order to achieve the above object, a display device according to the present invention is provided on the vehicle interior side and on the front side in the vehicle longitudinal direction so as to extend along the vehicle width direction intersecting with the vehicle longitudinal direction. A projection surface provided on a surface of the member on the vehicle interior side so as to face a visual position assumed in advance in the vehicle longitudinal direction; and the visual position on the interior member and in the vehicle longitudinal direction. And a projector for projecting projection light representing an image toward the projection plane, which is provided at a position between the projection plane and the projection plane.

  In the display device, the projector projects the projection light toward the opposite side of the projection surface along the vehicle front-rear direction, and the projection light projected from the body unit. A reflection part that reflects toward the projection surface may be included.

  Further, in the display device, the projection surface is recessed on the side opposite to the viewing position in the vehicle height direction viewed along the vehicle height direction intersecting the vehicle front-rear direction and the vehicle width direction. And a concave shape portion that is formed in a concave shape that converges the projection light toward the viewing position.

  In order to achieve the above object, the interior member unit according to the present invention is provided on the vehicle interior side and on the front side in the vehicle front-rear direction, extending along the vehicle width direction intersecting with the vehicle front-rear direction. An interior member, a projection surface provided on a surface of the interior member on the vehicle interior side so as to face a visual position assumed in advance with respect to the vehicle longitudinal direction, and on the interior member and in the vehicle longitudinal direction On the other hand, a projector is provided which is provided at a position between the viewing position and the projection plane and projects projection light representing an image toward the projection plane.

  In the display device and the interior member unit according to the present invention, projection light representing an image is projected from a projector toward a projection surface provided on the surface on the vehicle interior side of the interior member of the vehicle so as to face the viewing position. . In this case, the display device and the interior member unit are provided on the interior member and at a position between the viewing position and the projection plane. As a result, the display device and the interior member unit have an effect that an image can be appropriately projected onto the interior member of the vehicle.

FIG. 1 is a schematic cross-sectional perspective view showing a schematic configuration of a display device and an instrument panel unit according to the embodiment. FIG. 2 is a schematic diagram illustrating a schematic configuration of the display device and the instrument panel unit according to the embodiment. FIG. 3 is a schematic diagram illustrating a schematic configuration of the display device and the instrument panel unit according to the embodiment. FIG. 4 is a schematic diagram illustrating a concave shape portion of the projection surface of the display device according to the embodiment.

  Embodiments according to the present invention will be described below in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

[Embodiment]
The display device 1 of the present embodiment shown in FIGS. 1, 2, and 3 is applied to an instrument panel unit (hereinafter sometimes abbreviated as “instrument unit”) 100 as an interior member unit of the vehicle V. Various images are displayed. In the following description, in the vehicle V to which the display device 1 and the instrument panel unit 100 are applied, the “vehicle longitudinal direction X” typically corresponds to the full length direction of the vehicle V. Corresponds to the direction along the forward / backward direction. The “vehicle width direction Y” typically corresponds to the entire width direction of the vehicle V and corresponds to the left-right direction of the vehicle V. The “vehicle height direction Z” typically corresponds to the vehicle height direction of the vehicle V. The vehicle front-rear direction X, which is the first direction, the vehicle width direction Y, which is the second direction, and the vehicle height direction Z, which is the third direction, are perpendicular to each other and the vehicle V is positioned in the horizontal plane. The direction X and the vehicle width direction Y are along the horizontal direction, and the vehicle height direction Z is along the vertical direction. In the following description, in the vehicle longitudinal direction X, the side on which the vehicle V moves forward may be referred to as “front”, and the side on which the vehicle V moves backward may be referred to as “rear”. In the vehicle width direction Y, the left side toward the front in the vehicle front-rear direction X may be referred to as “left side”, and the right side toward the front in the vehicle front-rear direction X may be referred to as “right side”. In the vehicle height direction Z, the upper side in the vertical direction may be referred to as “upper side” and the lower side in the vertical direction may be referred to as “lower side”. Each direction used in the following description represents a direction in a state where the respective parts are assembled to each other unless otherwise specified.

  The instrument panel unit 100 includes an instrument panel (hereinafter may be abbreviated as “instrument panel”) 101 and a display device 1 that projects and displays various images on a projection surface 2 provided on the instrument panel 101. This is a unit with a display device that realizes proper image projection onto the instrument panel 101. The instrument panel 101 is a member that extends along the vehicle width direction Y intersecting the vehicle longitudinal direction X on the vehicle interior side IN where the driver's seat or the like is provided in the vehicle V and on the front side in the vehicle longitudinal direction X. is there. The instrument panel 101 extends from the right end to the left end along the vehicle width direction Y in the vicinity of a so-called windshield (so-called windshield) WS on the vehicle interior side IN. The instrument panel 101 is an interior member that is provided in the space portion on the vehicle interior side IN so as to be exposed in the vehicle interior side IN, and has various types between the front wall surface in the vehicle longitudinal direction X of the body of the vehicle V. It is also a partition member that partitions the storage space SP that stores the components. The parts accommodated in the accommodation space SP are, for example, a reinforcement provided in a position facing the driver's seat on the vehicle interior side IN and supporting a steering ST or the like operated by the driver on the body, and formed in a hollow shape. Structures such as air-conditioning ducts, various wire harnesses, electronic components and the like through which air can flow are cited. Hereinafter, the configuration of the display device 1 applied to the instrument panel unit 100 will be described in detail with reference to FIGS. 1, 2, and 3. In FIG. 1, the internal structure of the instrument panel 101 is not shown.

  Specifically, the display device 1 includes a projection surface 2, a projector 3, and a control device 4.

  The projection surface 2 is a screen provided on the projection surface installation surface 101 a of the instrument panel 101. The projection plane installation surface 101 a is configured by a surface on the vehicle interior side IN of the instrument panel 101 provided on the vehicle V, more specifically, a surface of the instrument panel 101 closest to the vehicle interior side IN. The projection plane installation surface 101 a constitutes an interior surface in the instrument panel 101. The projection plane 2 is an area where projection light representing an image is projected from the projector 3 on the projection plane installation plane 101a, and is set at an arbitrary position. Here, the projection surface 2 is provided on the side opposite to the driver seat side of the vehicle V with respect to the center C of the instrument panel 101 in the vehicle width direction Y, in other words, on the side opposite to the side where the steering ST is provided. The projection surface 2 of the present embodiment is provided on the left side of the instrument panel 101 in the vehicle width direction Y. Furthermore, the projection surface 2 of the present embodiment is a position that can be viewed from the expected visual position EP in the instrument panel 101, typically above the vehicle height direction Z (vertical direction). It is provided at a position facing the visual position EP with respect to the front-rear direction X. Here, the projection surface 2 is located on the front side in the vehicle front-rear direction X of the flat surface portion 101 b located on the rear side in the vehicle front-rear direction X on the projection surface installation surface 101 a. The flat surface portion 101b is formed as a substantially horizontal surface on the rear side in the vehicle front-rear direction X on the projection surface installation surface 101a, and extends along the vehicle width direction Y. The projection plane 2 is erected along the vehicle height direction Z with respect to the plane portion 101b on the projection plane installation plane 101a. Here, the projection plane 2 is formed so as to intersect with the plane portion 101b substantially perpendicularly. The projection surface 2 is formed as a horizontally long region extending along the vehicle width direction Y. Here, the visual position EP is typically assumed in advance as being typically located within a so-called eye range in the vehicle V to which the display device 1 and the instrument panel unit 100 are applied. Here, the eye range is an “automobile driver eye range” and corresponds to a region where the viewpoint of the driver determined in advance according to the vehicle V is located. The eye range is typically a statistical representation of the distribution of the driver's eyes in the vehicle V. For example, the eye range is a predetermined ratio (for example, 95%) with the driver sitting in the driver's seat. This corresponds to a region including the driver's eye position. Here, the visual position EP is assumed based on the driver of the vehicle V. However, the visual position EP is not limited to this and may be assumed based on another passenger of the vehicle V.

  The projection plane installation surface 101a including the projection plane 2 of the present embodiment is typically configured as a plane that does not transmit light. The projection surface 2 constitutes, for example, a diffusive or reflective screen on the projection surface installation surface 101a. When projection light representing an image from the projector 3 is incident on the projection surface 2, the projection surface 2 reflects the projection light toward the viewing position EP so that the driver or the like visually recognizes the image represented by the projection light. The projection surface 2 is subjected to, for example, surface processing such as fine processing, surface coating, or a resin sheet in order to properly reflect the projection light representing the image projected from the projector 3 on the projection surface installation surface 101a. ing. The projection surface 2 may be provided with an optical system surface layer such as a so-called microlens array.

  Moreover, the projection surface 2 of this embodiment has the concave shape part 2a formed in the concave shape as shown also in FIG. The concave shape portion 2a is curved in a concave shape on the opposite side to the viewing position EP in the vehicle height direction view of the projection surface 2 when the projection surface 2 is viewed along the vehicle height direction Z (see FIG. 4). The projection light from the projector 3 is a portion formed in a concave shape for condensing the projection light on the viewing position EP side. The concave surface portion 2a is provided on the projection surface 2 at a position relatively spaced from the viewing position EP with respect to the vehicle longitudinal direction X, here, on the left end in the vehicle width direction Y. Further, the projection plane 2 is an area relatively close to the viewing position EP with respect to the vehicle longitudinal direction X, typically an area in the vicinity of a position facing the viewing position EP in front of the vehicle longitudinal direction X. Constitutes the planar shape portion 2b. The planar shape portion 2b is a portion formed in a substantially planar shape along the vehicle longitudinal direction X on the projection plane 2. The curved concave shape of the concave shape portion 2a is obtained by, for example, projecting the projection light from the projector 3 according to the geometric positional relationship between the mirror 32a of the projector 3 and the visual position EP and the position of the concave shape portion 2a. It is determined so as to collect light toward the viewing position EP. In the concave shape portion 2a of the projection surface 2, typically, each reflection angle of the projection light projected and incident from the projector 3 is an angle at which the reflection light of the projection light is collected toward the viewing position EP. It is formed in the concave shape curved as such a curved surface. The projection surface 2 is further curved in a concave shape on the side opposite to the viewing position EP in the vehicle width direction viewed along the vehicle width direction Y, and the projection light from the projector 3 is directed to the viewing position EP side. A portion with a concave shape for condensing light may be provided.

  Here, in the display device 1, the hood portion 102 extends along the vehicle front-rear direction X to the upper side of the projection surface 2 in the vehicle height direction Z. The hood portion 102 is a flange member provided on the upper side of the instrument panel 101 in the vehicle height direction Z. The hood part 102 extends from the right end to the left end along the vehicle width direction Y in parallel with the instrument panel 101.

  The projector 3 projects an image, more specifically, projects projection light representing the image toward the projection plane 2 and projects an image based on the projection light onto the projection plane 2. The projector 3 includes a main body unit 31 and a reflection unit 32. The projector 3 may be unitized by the main body 31 and the reflection unit 32 being housed and assembled in a casing. Typically, the projector 3 is preferably a so-called short focus projector so that the projector 3 is arranged as close as possible to the projection plane installation surface 101a on which the projection plane 2 is provided, and the close projection onto the projection plane 2 is realized. . The projector 3 according to the present embodiment is configured to include a mirror 32 a as the reflection unit 32. Then, the projector 3 realizes a short focus by configuring the bending projection optical system with one reflection system by the mirror 32 a configuring the reflection unit 32 and a lens system such as a projection lens configuring the main body unit 31. doing.

  The main body 31 is a projector main body that emits projection light representing an image, a light source such as an LED element, a display panel such as a micro display that forms an original image of the image to be projected, a projection lens (projection lens, imaging lens). Etc., including a lens system. The main body 31 of the present embodiment is provided on the instrument panel 101 and at a position between the viewing position EP and the projection plane 2 with respect to the vehicle longitudinal direction X. Here, the main body 31 is provided on the flat surface portion 101 b of the projection surface installation surface 101 a of the instrument panel 101. The main body 31 is fixed on the plane part 101b of the instrument panel 101 in a positional relationship in which the emitting part 31a that emits the projection light faces the opposite side of the projection surface 2 along the vehicle longitudinal direction X, that is, the rear side. The main body portion 31 is installed on the flat surface portion 101b via a fastening member such as a bolt or an adhesive, for example. The main body 31 emits projection light representing an image toward the opposite side of the projection plane 2 along the vehicle longitudinal direction X, that is, toward the rear side. For example, as shown in FIGS. 1 and 3, the main body 31 is located on the front side in the vehicle longitudinal direction X of the design member 103 provided on the vehicle interior side IN of the vehicle V from the visual position EP of the design member 103. It is preferable to be provided at a position that becomes a blind spot.

  The reflection unit 32 constitutes a reflection system that reflects the projection light representing the image emitted from the main body unit 31 toward the projection plane 2, and includes the mirror 32a as described above. . The mirror 32 a totally reflects the projection light representing the image emitted from the emission part 31 a of the main body part 31 toward the projection surface 2. The mirror 32a of the present embodiment is a magnifying mirror that magnifies and reflects an image represented by the projection light, and is also a free-form surface mirror that reflects and corrects distortion of the image represented by the projection light. The mirror 32a functioning as a magnifying mirror is formed as a concave or convex mirror. The mirror 32a functioning as a magnifying mirror is such that the image represented by the projection light after being reflected by the mirror 32a is relatively larger than the image represented by the projection light before being reflected by the mirror 32a. Enlarges the image and reflects it. The mirror 32a that functions as a free-form surface mirror is formed as a mirror having an asymmetric shape with respect to the optical axis, unlike a spherical surface or a paraboloid, and is also called an aspherical mirror. That is, the mirror 32a is formed as a mirror having a concave surface or a convex surface and an asymmetric shape with respect to the optical axis. The mirror 32 a that functions as a free-form surface mirror is formed in a shape corresponding to the surface shape of the projection surface 2 and the geometric positional relationship of the mirror 32 a with respect to the projection surface 2, and reflects the projection light toward the projection surface 2. At this time, the distortion is optically corrected so that the image represented by the projection light projected on the projection surface 2 has a desired shape. Here, for example, as shown in FIGS. 1 and 3, the mirror 32 a is provided between the main body 31 and the design member 103 in the vehicle longitudinal direction X. The mirror 32a is preferably provided, for example, at a position where the design member 103 becomes a blind spot from the visual position EP on the front side in the vehicle longitudinal direction X of the design member 103. The mirror 32a is installed on the instrument panel 101 through a fastening member such as a bolt or an adhesive, for example.

  The control device 4 controls each part of the projector 3 and controls a display image by the projector 3. The control device 4 includes an electronic circuit mainly composed of a known microcomputer including a CPU, a ROM, a RAM, and an interface. The control device 4 is electrically connected to the projector 3 via an interface. The control device 4 may be connected to the projector 3 via the above-described wire harness or the like, or may be housed in the main body 31 of the projector 3 and configured integrally with the projector 3. The control device 4 may also be used as an ECU (Electronic Control Unit) that controls the entire vehicle V in an integrated manner, or is configured separately from the ECU, and detects, drives, and controls each other. It may be configured to exchange information such as commands. The control device 4 outputs a control signal to the projector 3 by executing a control program stored in a ROM, a RAM, or the like, controls the operation of the projector 3, and the image projected on the projection plane 2 by the projector 3 Various processes for controlling are performed. For example, the control device 4 is electrically connected to an imaging device 4A that images the outside of the vehicle V, that is, the outside of the passenger compartment, and controls the projector 3 based on the image captured by the imaging device 4A. An image including blind spot information on the passenger seat side viewed from the driver seat side, here, the left side in the vehicle width direction Y is projected on the projection plane 2. In addition to the blind spot information, the control device 4 controls the projector 3 as vehicle information such as vehicle speed, integrated travel distance, cooling water temperature, output rotational speed of the driving power source, fuel remaining amount, battery power storage, and the like. An image including a quantity, various warning lights (warning lamp, so-called tell tale), a shift position indicator, a direction indication symbol, navigation information, and the like may be projected on the projection plane 2.

  The display device 1 and the instrument panel unit 100 described above project the projection light representing an image from the projector 3 toward the projection surface 2 provided on the surface of the instrument panel 101 of the vehicle V on the vehicle interior side IN facing the viewing position EP. Is projected. In the display device 1, the projector 3 is provided on the instrument panel 101 and at a position between the visual position EP and the projection plane 2. With this configuration, the display device 1 can be configured such that an obstacle such as an occupant or a luggage of the vehicle V is unlikely to be interposed on the optical path of the projection light from the projector 3 to the projection plane 2. It can be set as the structure which is hard to be interrupted before reaching the surface 2. In addition, with this configuration, the display device 1 can also suppress an influence on the accommodation space SP side, which is a space inside the instrument panel 101, and can be mounted on the vehicle V. Further, by virtue of the configuration, the display device 1 can be provided, for example, as close as possible to the windshield WS in the vehicle interior IN, so that the mountability to the vehicle V can be improved in this respect as well. . In the display device 1, both the projection surface 2 and the projector 3 that projects an image on the projection surface 2 are provided in the instrument panel 101. With this configuration, for example, even when the vehicle V vibrates, the display device 1 vibrates both the projection surface 2 and the projector 3 together with the instrument panel 101, and the relative positional relationship between the projection surface 2 and the projector 3 varies. A difficult configuration can be obtained. With this configuration, the display device 1 can be configured such that the image projected on the projection plane 2 is less likely to be blurred. As a result, the display device 1 and the instrument panel unit 100 can appropriately project an image onto the instrument panel 101 of the vehicle V.

  Furthermore, since the display device 1 and the instrument panel unit 100 described above are configured so that the projector 3 includes the main body 31 and the reflection unit 32, the image is displayed while changing the optical path via the reflection unit 32. Projection light can be projected toward the projection plane 2. More specifically, the display device 1 can reflect the projection light emitted from the main body 31 to the rear side in the vehicle front-rear direction X by the mirror 32a and project it onto the projection surface 2 on the front side in the vehicle front-rear direction X. . As a result, the display device 1 can adjust the optical path of the projection light from the projector 3 to the projection surface 2, so that the optical axis direction (emission direction) of the projection light emitted from the main body 31 and the projection surface 2 Can be arbitrarily adjusted.

  In addition, the display device 1 and the instrument panel unit 100 described above include a mirror 32a in which the reflection unit 32 functions as a magnifying mirror. With this configuration, the display device 1 and the instrument panel unit 100 can enlarge the image represented by the projection light emitted from the main body 31 to a desired size and project it on the projection plane 2. An image can be appropriately projected onto the instrument panel 101.

  In addition, the display device 1 and the instrument panel unit 100 described above include a mirror 32a in which the reflecting unit 32 functions as a free-form surface mirror. With this configuration, the display device 1 and the instrument panel unit 100 can correct the distortion of the image represented by the projection light emitted from the main body 31 and project the image onto the projection surface 2. An image can be projected appropriately.

  Furthermore, the display device 1 and the instrument panel unit 100 described above include the concave surface portion 2a in which the projection surface 2 is curved in a concave shape on the side opposite to the visual position EP when viewed in the vehicle height direction. Therefore, the projection light from the projector 3 can be condensed on the viewing position EP side. Here, the display device 1 is provided with the concave shape portion 2a on the projection plane 2 at a position relatively separated from the visual position EP with respect to the vehicle longitudinal direction X, while the visual position EP with respect to the vehicle longitudinal direction X is provided. A plane-shaped portion 2b is provided at a position relatively close to. With this configuration, for example, the display device 1 appropriately projects projection light on the projection plane installation surface 101a of the instrument panel 101 even at a position relatively separated from the viewing position EP with respect to the vehicle width direction Y. It can be. As a result, the display device 1 can ensure a relatively wide projection surface 2 on which an image by projection light is projected. In addition, with this configuration, the display device 1 can bring the line of sight from the viewing position EP and the projection plane 2 into an almost right angle on the entire projection plane 2. However, it is possible to make the entire projection plane 2 easily visible from the viewing position EP. Further, with this configuration, the display device 1 can relatively increase the component of the projection light that is reflected toward the viewing position EP on the entire projection surface 2, so that uneven brightness occurs in an image that can be viewed from the viewing position EP. Can be suppressed.

  In addition, the display apparatus and interior member unit which concern on embodiment of this invention mentioned above are not limited to embodiment mentioned above, A various change is possible in the range described in the claim.

  Although the projector 3 described above has been described as including the reflection unit 32, the projector 3 is not limited thereto, and the projector 3 does not include the reflection unit 32 and directly projects an image from the main body unit 31 onto the projection surface 2 without passing through the reflection member. But you can.

  Although the reflection part 32 demonstrated above was demonstrated as including the mirror 32a, it is not restricted to this, For example, multiple mirrors may interpose. Moreover, although the mirror 32a was demonstrated as a magnifying mirror and a free-form surface mirror, it is not restricted to this. For example, the projector 3 may cause the image shown on the projection plane 2 to have a desired shape by distorting the image itself represented by the projection light emitted from the main body 31 by image processing.

  Although the projection surface 2 described above is described as being provided on the side opposite to the driver seat side of the vehicle V with respect to the center C in the vehicle width direction Y of the instrument panel 101, the present invention is not limited to this. What is necessary is just to be provided in the surface of inner side IN.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Projection surface 2a Concave-surface part 3 Projector 31 Main body part 32 Reflection part 100 Instrument panel unit, instrument panel unit (interior member unit)
101 Instrument panel, instrument panel (interior material)
EP Visual position IN Vehicle interior side V Vehicle X Vehicle longitudinal direction Y Vehicle width direction Z Vehicle height direction

Claims (4)

A vehicle interior side surface of an interior member provided extending along a vehicle width direction intersecting the vehicle front-rear direction on the vehicle interior side and on the front side in the vehicle front-rear direction with respect to the vehicle front-rear direction A projection plane provided opposite to the visual position assumed in advance,
A projector that projects projection light that is provided on the interior member and at a position between the viewing position and the projection plane with respect to the vehicle front-rear direction and that represents an image toward the projection plane. To
Display device. The projector projects the projection light toward the opposite side of the projection surface along the vehicle front-rear direction, and reflects the projection light projected from the main body portion toward the projection surface. Including reflective parts to
The display device according to claim 1. The projection surface is curved in a concave shape on the side opposite to the viewing position when viewed in the vehicle height direction viewed along the vehicle height direction intersecting the vehicle longitudinal direction and the vehicle width direction. Having a concave shape portion formed in a concave shape for condensing the viewing position side,
The display device according to claim 1. An interior member provided to extend along the vehicle width direction intersecting the vehicle front-rear direction on the vehicle interior side and on the front side in the vehicle front-rear direction;
A projection surface provided on a surface on the vehicle interior side of the interior member so as to face a visual position assumed in advance with respect to the vehicle longitudinal direction;
A projector that projects projection light that is provided on the interior member and at a position between the viewing position and the projection plane with respect to the vehicle front-rear direction and that represents an image toward the projection plane. To
Interior member unit.

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