WO2014171280A1 - Head-up display device - Google Patents

Head-up display device Download PDF

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Publication number
WO2014171280A1
WO2014171280A1 PCT/JP2014/058558 JP2014058558W WO2014171280A1 WO 2014171280 A1 WO2014171280 A1 WO 2014171280A1 JP 2014058558 W JP2014058558 W JP 2014058558W WO 2014171280 A1 WO2014171280 A1 WO 2014171280A1
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WIPO (PCT)
Prior art keywords
unit
opening
head
display
display device
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PCT/JP2014/058558
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French (fr)
Japanese (ja)
Inventor
宗史 沖田
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トヨタ自動車株式会社
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Publication of WO2014171280A1 publication Critical patent/WO2014171280A1/en

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    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/0101Head-up displays characterised by optical features
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/0101Head-up displays characterised by optical features
    • G02B2027/0123Head-up displays characterised by optical features comprising devices increasing the field of view
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01Head-up displays
    • G02B27/0179Display position adjusting means not related to the information to be displayed
    • G02B2027/0187Display position adjusting means not related to the information to be displayed slaved to motion of at least a part of the body of the user, e.g. head, eye

Definitions

  • the present invention relates to a head-up display device that displays information necessary for a driver using a front windshield (front glass) of a vehicle.
  • An indicator installed in the instrument panel of the vehicle irradiates an image on the reflection surface inside the front windshield through an opening provided in the instrument panel, and appropriately notifies the user based on the reflection of the reflection surface.
  • an object of the present invention is to provide a head-up display device capable of reducing the size of the opening or improving the appearance.
  • a head-up display device in a projection unit that projects a display image on a front windshield of a vehicle, a first adjustment unit that adjusts a projection direction of the projection unit, and the front windshield.
  • a control unit that performs control to move the lid according to the projection direction.
  • the head-up display device of the present invention by moving the opening according to the projection direction, the size of the opening can be reduced, and the appearance and design can be improved.
  • FIG. 1 is a block diagram illustrating a schematic configuration of a head-up display device of Example 1.
  • FIG. It is a schematic diagram which shows the aspect of the virtual image based on the irradiation aspect with respect to the windshield of the head-up display apparatus of Example 1, and the reflection by windshield glass.
  • It is a schematic cross section which shows the aspect of the opening comprised by the instrument panel and bezel of the head-up display apparatus of Example 1.
  • FIG. 3 is a flowchart illustrating a control process in the head-up display device according to the first embodiment.
  • It is a schematic diagram which shows the aspect of the opening of the prior art corresponding to the opening in the head-up display apparatus of Example 1.
  • FIG. 6 is a flowchart illustrating a modification of control processing in the head-up display device according to the first embodiment. It is a schematic block diagram which shows schematic structure of the head-up display apparatus of Example 2 which concerns on this invention. It is a schematic cross section which shows the aspect of the opening comprised by the instrument panel and bezel of the head-up display apparatus of Example 2.
  • FIG. 6 is a flowchart illustrating a control process in the head-up display device according to the second embodiment.
  • FIG. 1 is a schematic block diagram illustrating a schematic configuration of a head-up display device 1 according to the first embodiment.
  • FIG. 2 is a schematic diagram illustrating an aspect of the virtual image F based on the irradiation mode on the windshield 2 and the reflection by the windshield glass 2 of the head-up display device 1 of the first embodiment.
  • F indicates the front of the vehicle
  • U indicates the vertically upper side
  • R indicates the right side in the vehicle width direction.
  • the head-up display device 1 is provided on the front windshield 2 and the concave mirror 4 (projection unit) that projects the display image of the display 3 onto the front windshield 2 of the vehicle.
  • a reflection unit 2a that reflects a display image
  • an adjustment unit 6a first adjustment unit as a function of a HUD unit ECU 6 (Electronic Control Unit) that adjusts the projection direction of the concave mirror 4 by a concave mirror actuator 5 are included.
  • the head-up display device 1 is provided between the concave mirror 4 and the reflecting portion 2a, and has an opening 7a provided in the instrument panel 7 shown in FIG. 2, and the opening 7a is movable in the front-rear direction of the vehicle.
  • the panel which has the opening part 7a does not need to be the whole instrument panel 7,
  • the panel of the instrument panel 7 Only the periphery of the opening 7 a may be a panel separated from the main body of the instrument panel 7.
  • the front windshield 2 is glass on the front side of the vehicle, and the reflecting portion 2a is formed by appropriate means such as providing a combiner on the surface of the area where the display image on the indoor side is projected.
  • the reflecting portion 2 a is formed on the surface of the front windshield 2 on the vehicle interior side or inside the front windshield 2. Note that the display image projected on the reflecting portion 2a moves upward in the vertical direction means that the projection direction of the concave mirror 4 (projecting portion) is displaced clockwise when viewed from the left in the vehicle width direction of the vehicle. Point to.
  • the display 3 is constituted by, for example, an LED array including a plurality of LED elements and a TFT screen with a backlight, and irradiates the concave mirror 4 with a desired display image such as a vehicle speed or a night pedestrian image.
  • the concave mirror 4 has a function of enlarging and reflecting the projected display image, passing through the opening 8a, and projecting it onto the reflecting portion 2a of the front windshield 2.
  • the concave mirror actuator 5 is configured by, for example, a combination of a brushless motor and a known gear mechanism, and is drivingly connected to a rotating shaft (not shown) of the concave mirror 4, and the angle of the concave mirror 4 is determined based on an adjustment command from the adjustment unit 6 a of the HUD unit ECU 6. Adjust ⁇ .
  • the angle ⁇ is a clockwise angle with respect to the upper vertical direction in FIG. 2 and is synonymous with the projection direction. Of course, an angle based on the horizontal direction may be used.
  • the HUD unit ECU 6 includes, for example, a CPU, a ROM, a RAM, a data bus that interconnects them, an input / output interface, and the like, and the CPU performs predetermined processing described below in accordance with a program stored in the ROM.
  • the HUD unit ECU 6 constitutes the adjustment unit 6a and the control unit 6b described above.
  • the bezel 8 is a lid that is provided in the opening 7a of the instrument panel 7 so as to be slidable in the front-rear direction of the vehicle via a guide mechanism that extends in the front-rear direction (not shown).
  • the bezel 8 includes an opening 8 a that transmits a display image projected by the concave mirror 4.
  • the guide mechanism is constituted by a combination of a pair of left and right guides provided on the opening 7a side and a pair of left and right rails provided on the bezel 8 side, for example.
  • the left-right direction is the vehicle width direction.
  • the display height adjustment switch 9 (second adjustment unit) is provided, for example, near the meter in the driver's seat of the vehicle, and is based on the fact that the display image generated by the display 3 is projected by the concave mirror 4 and reflected by the reflection unit 2a. The display height of the virtual image formed in this way is adjusted based on the driver's selection.
  • the display height adjustment switch 9 outputs display height information including the display height of a virtual image, that is, a display image, as selection content to the HUD unit ECU 6.
  • the line-of-sight detection camera 10 (line-of-sight detection unit) is, for example, a CMOS camera provided rearwardly on the instrument panel 7 on the front side of the driver's seat or the lower part of the roof. Image data captured by the line-of-sight detection camera 10 is subjected to predetermined image processing such as well-known edge detection and pattern matching in a built-in microcomputer, and line-of-sight position information including the driver's line-of-sight position and line-of-sight direction is obtained. Detected. The microcomputer of the line-of-sight detection camera 10 outputs line-of-sight position information as a detection result to the HUD unit ECU 6.
  • the bezel position control actuator 11 is configured by, for example, a combination of a brushless motor and a known gear mechanism, and is drivingly connected to, for example, a rack mechanism (not shown) of the bezel 8 and is based on a position control command of the control unit 6b of the HUD unit ECU 6.
  • the position P in the front-rear direction of the bezel 8 is controlled.
  • FIG. 2 shows the relative position of each component in the cross section perpendicular to the vehicle width direction including the opening 8a.
  • EYEBOX indicates an area where the driver can visually recognize a virtual image.
  • an ellipse A indicates a range in which, for example, 99% of human eyes are distributed statistically
  • EYEBOX1 indicates the highest EYEBOX in the range
  • EYEBOX2 indicates the lowest position in the range.
  • EYEBOX is shown.
  • 2 in FIG. 2 shows the outer shape of the HUD unit.
  • the display image irradiated from the display 3 to the front of the vehicle is projected toward the reflecting portion 2a of the windshield 2 by the concave mirror 4, and when forming the virtual image F1 corresponding to the high-position EYEBOX 1, the image shown in FIG. An optical path as indicated by a broken line is used.
  • the display image passes through the opening 8a (1) of the hatched area 7ar located on the rear side of the opening 7a, and the display image reaches the reflecting portion 2a. That is, the adjustment unit 6a controls the concave mirror actuator 5 so that the angle ⁇ is inclined toward the vehicle rear side with respect to the vertical direction, that is, the projection direction is laid behind the vehicle.
  • the control of the concave mirror actuator 5 by the adjusting unit 6a may be feedforward control or feedback control after detecting the angle ⁇ using a Hall element, for example.
  • an optical path indicated by a one-dot chain line in FIG. 2 is used.
  • the display image passes through the opening 8a (2) indicated by the hatched area 7af located on the front side of the opening 7a, and the display image reaches the reflecting portion 2a. That is, the adjustment unit 6a controls the concave mirror actuator 5 so that the angle ⁇ is inclined to the side along the vertical direction, that is, the projection direction is directed substantially upward in the vertical direction.
  • the length L in the front-rear direction of the opening 8a of the bezel 8 is set to the length Lr of the hatched area 7ar, which is the longer of the length Lf of the hatched area 7af and the length Lr of the hatched area 7ar.
  • the bezel 8 is included, and the bezel 8 is moved in the front-rear direction based on the control of the control unit 6b in accordance with the optical path, that is, the projection direction.
  • the control of the bezel position actuator 11 by the control unit 6b and feedforward control may be used, for example, feedback control after detecting the position P using a Hall element.
  • the movement form of the bezel 8 will be described in more detail.
  • FIG. 3 is a schematic cross-sectional view showing an aspect of the opening 8a configured by the instrument panel 7 and the bezel 8 of the head-up display device 1 of the first embodiment.
  • F indicates the front of the vehicle
  • U indicates the vertically upward direction
  • R indicates the right side in the vehicle width direction.
  • FIG. 3 shows the relative positional relationship between the bezel 8 and the opening 7 a of the instrument panel 7.
  • FIG. 3A shows the relative positional relationship when the bezel 8 is moved to the front F side of the vehicle
  • FIG. 3B is the relative positional relationship when the bezel 8 is moved to the rear side of the vehicle. Is shown. That is, the position of the bezel 8 shown in FIG. 3A indicates the position of the bezel 8 that realizes the opening 8a (2) shown in FIG. 2, and the position of the bezel 8 shown in FIG. ) Shows the position of the bezel 8.
  • the adjusting unit 6a adjusts the projection direction based on at least one of display height information from the display height adjustment switch 9 and line-of-sight position information from the line-of-sight detection camera 10 (line-of-sight detection unit).
  • the control unit 6b moves the bezel 8 to the rear side of the vehicle as the display image projected on the reflection unit 2a moves upward in the vertical direction, that is, as the projection direction tilts to the rear side of the vehicle. .
  • FIG. 4 is a flowchart illustrating a control process in the head-up display device 1 according to the first embodiment.
  • the adjustment unit 6a acquires line-of-sight position information from the line-of-sight detection camera 10, and performs virtual image position adjustment, that is, adjustment of the angle ⁇ of the concave mirror 4 in step S2.
  • step S3 the adjustment unit 6a determines whether or not the virtual image position matches the line-of-sight position. If the result is affirmative, the process proceeds to step S4. If the result is negative, step S2 is performed again. In step S4, the adjustment unit 6a determines whether or not the display height adjustment switch 9 is turned on by the driver. If the determination is affirmative, the process proceeds to step S5, and the display height information from the display height adjustment switch 9 is displayed. Based on this, the virtual image position is adjusted. If the result is negative, the virtual image position is not adjusted.
  • step S5 After the process of step S5 is completed, the process proceeds to step S6, and the control unit 6b determines the position P in the front-rear direction of the bezel 8 from the angle ⁇ of the concave mirror 4 after the process of step S5 is finished. Is calculated based on the first predetermined function determined from step S7, and the control proceeds to step S7 to move to the position P of the bezel 8.
  • step S4 After the negative process in step S4 is completed, the process proceeds to step S8, and the controller 6b determines the position P in the front-rear direction of the bezel 8 from the angle ⁇ of the concave mirror 4 after the negative process in step S4 is finished. Calculation is performed based on a first predetermined function determined from the target shape and the positional relationship between the windshield 2 and the concave mirror 4, and the control proceeds to step S9 to move to the position P of the bezel 8.
  • FIG. 5 is a schematic diagram showing an aspect of the prior art opening 108a corresponding to the opening 8a in the head-up display device 1 of the first embodiment.
  • the opening 8a can be made the minimum necessary size in accordance with the irradiation direction. That is, according to the prior art, the opening 108a of the bezel 108 corresponding to the opening 7a of the instrument panel 7 needs to transmit the display image in all the projection directions of the concave mirror 4, and therefore is almost the same as the opening 7a. In Example 1, it is necessary to make it the same size, and it is difficult to improve the designability because the inside of the instrument panel 7 can be seen from the opening 108a.
  • FIG. 6 is a flowchart showing a modification of the control process in the head-up display device of the first embodiment.
  • the virtual image position is adjusted using both the line-of-sight position information and the display height information.
  • the virtual image position can be adjusted based only on the display height information. .
  • FIG. 7 is a block diagram illustrating a configuration of the head-up display device 1 according to the second embodiment.
  • FIG. 8 is a cross-sectional view illustrating an aspect of an opening 80a configured by the instrument panel 7 and the bezels 81 and 82 of the head-up display device 1 according to the second embodiment.
  • the bezel 8 is divided into two in the front-rear direction and each is controlled independently to match the projection direction.
  • the length of the opening in the front-rear direction can also be controlled.
  • the head-up display device 1 of the second embodiment includes a pair of front and rear bezels 81 and 82, bezel position actuators 111 and 112 that can be controlled independently, and a control unit of the HUD unit ECU 6.
  • the point that 6b comprehensively controls the bezel position actuators 111 and 112 is different from the first embodiment.
  • a bezel 81 located on the rear side of the opening 80a and a bezel 82 located on the front side are included, and the positions of the bezel 81 and the bezel 82 in the front-rear direction are independent.
  • the length in the front-rear direction of the opening 80a is set to the length L2 at the front position shown in FIG. 8A, and the length L1 (at the rear position shown in FIG. 8B).
  • the opening amount is controlled as L1> L2).
  • the projection direction that is, the angle ⁇ of the concave mirror 4 has a second predetermined relationship
  • the display image projected on the reflecting portion 2a moves upward in the vertical direction, that is, the projection direction tilts toward the rear side of the vehicle. Accordingly, the opening amount is increased.
  • FIG. 9 is a flowchart illustrating a control process in the head-up display device 1 according to the second embodiment.
  • the processing from step S1 to step S5 is the same as that shown in FIG.
  • step S6-1 the control unit 6b determines the length of the opening 80a of the bezels 81 and 82, that is, the opening amount and the amount thereof from the angle ⁇ of the concave mirror 4 after the processing of step S5.
  • the positions P1 and P2 in the front-rear direction corresponding to the angle ⁇ of the concave mirror 4 that realize the opening amount are based on a second predetermined function that is determined from the geometric shape of the windshield 2, the positional relationship between the windshield 2 and the concave mirror 4, and the like.
  • the control unit 6b proceeds to step S7-1 and performs control to move the bezels 81 and 82 to the independent positions P1 and P2, respectively.
  • step S8-1 the control unit 6b determines the length of the opening 80a of the bezels 81 and 82, that is, the opening amount from the angle ⁇ of the concave mirror 4 after the negative process in step S4. And a position P1 and P2 in the front-rear direction corresponding to the angle ⁇ of the concave mirror 4 are determined from the geometric shape of the windshield 2, the positional relationship between the windshield 2 and the concave mirror 4, and the like. Calculation is performed based on a predetermined function, and control proceeds to step S9-1 to move the bezels 81 and 82 to the respective positions P1 and P2.
  • the opening 80a can be made the minimum necessary size in accordance with the irradiation direction. Further, in addition to the front and rear positions P1, P2 of the bezels 81, 82, the length of the opening 80a is increased toward the rear side, and the opening 80a in the case where the bezels 81, 82 are located on the front side is further increased. Can be small. That is, in Example 2, the design property can be further improved.
  • the projection unit that determines the projection direction is constituted by a concave mirror and a concave mirror actuator.
  • a combination with an actuator that controls the angle between the display and the display may be replaced with other means.
  • Other means may be used.
  • Head-up display (HUD) device 2 Front windshield (glass) 2a Reflector 3 Display 4 Concave mirror (projector) 5 Concave mirror actuator 6 HUD unit ECU 6a adjustment unit 6b control unit 7 instrument panel 7a opening 8 bezel 8a opening 9 display height adjustment switch 10 line of sight detection camera 11 bezel position control actuator 12 HUD unit 81 bezel (rear side) 82 Bezel (front side) 80a Opening 111 Bezel position control actuator (rear side) 112 Bezel position control actuator (front side)

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Abstract

The present invention addresses the problem of providing a head-up display device in which the size of an opening can be made smaller and appearance can be improved. The head-up display device includes: a projection unit for projecting a display image on the front windshield of a vehicle; a first adjustment unit for adjusting the projecting direction of the projection unit; a reflection unit provided to the front windshield, for reflecting the display image; a lid unit provided so as to be capable of movement in the vehicular front-back direction to an opening part positioned between the projection unit and the reflection unit, and having an opening for transmitting the display image; and a control unit for performing control for moving the lid unit in accordance with the projecting direction.

Description

ヘッドアップディスプレイ装置Head-up display device
 本発明は、車両のフロントウィンドシールド(フロントガラス)を用いて運転者に必要な情報を表示するヘッドアップディスプレイ装置に関する。 The present invention relates to a head-up display device that displays information necessary for a driver using a front windshield (front glass) of a vehicle.
 車両のインストルメントパネル内に設置された表示器が、インストルメントパネルに設けた開口部を介してフロントウィンドシールドの内側の反射面に画像を照射して、反射面の反射に基づいて適宜ユーザに対して情報を提供するヘッドアップディスプレイ装置がある。この場合、この開口部を介してインストルメントパネル内が外部から見えてしまうことは意匠性の観点から好ましくない。そこで、意匠性や見栄えを考慮して開口部を適宜遮蔽する技術として、例えば特許文献1に記載されるように、表示器の不使用時にこの開口部を閉塞するシャッター部を具備することが提案されている。 An indicator installed in the instrument panel of the vehicle irradiates an image on the reflection surface inside the front windshield through an opening provided in the instrument panel, and appropriately notifies the user based on the reflection of the reflection surface. There is a head-up display device that provides information to the user. In this case, it is not preferable from the viewpoint of design properties that the inside of the instrument panel can be seen from the outside through the opening. Therefore, as a technique for appropriately shielding the opening in consideration of design and appearance, for example, as described in Patent Document 1, it is proposed to include a shutter portion that closes the opening when the display is not used. Has been.
特開2003-237411号公報JP 2003-237411 A
 ところが、上述したヘッドアップディスプレイ装置においては、表示器の使用時においてはユーザの視線の高さや好みに合わせて画像の照射方向を調整することが必要で、開口部を全照射方向に対応可能な大きさとしているため、見栄え向上を図ることが依然として困難であるという問題があった。 However, in the above-described head-up display device, when the display is used, it is necessary to adjust the irradiation direction of the image according to the height and preference of the user's line of sight, and the opening can correspond to all irradiation directions. Due to the size, there was a problem that it was still difficult to improve the appearance.
 そこで本発明は、開口サイズの小型化、又は、見栄え向上を図ることができるヘッドアップディスプレイ装置を提供することを目的とする。 Therefore, an object of the present invention is to provide a head-up display device capable of reducing the size of the opening or improving the appearance.
 上記の問題を解決するため、ヘッドアップディスプレイ装置は、車両のフロントウィンドシールドに表示画像を投影する投影部と、前記投影部の投影方向を調整する第1調整部と、前記フロントウィンドシールドに設けられて前記表示画像を反射する反射部と、前記投影部と前記反射部との間に位置する開口部に前記車両の前後方向に移動可能に設けられて前記表示画像を透過する開口を有する蓋部と、当該蓋部を前記投影方向に応じて移動させる制御を行う制御部とを含む。 In order to solve the above problems, a head-up display device is provided in a projection unit that projects a display image on a front windshield of a vehicle, a first adjustment unit that adjusts a projection direction of the projection unit, and the front windshield. A lid that reflects the display image, and a lid that is provided in an opening located between the projection unit and the reflection unit so as to be movable in the front-rear direction of the vehicle and transmits the display image. And a control unit that performs control to move the lid according to the projection direction.
 本発明のヘッドアップディスプレイ装置によれば、投影方向に応じて開口を移動させることによって、開口の大きさを小さくして、見栄えや意匠性を高めることができる。 According to the head-up display device of the present invention, by moving the opening according to the projection direction, the size of the opening can be reduced, and the appearance and design can be improved.
実施例1のヘッドアップディスプレイ装置の概略構成を示すブロック図である。1 is a block diagram illustrating a schematic configuration of a head-up display device of Example 1. FIG. 実施例1のヘッドアップディスプレイ装置のウィンドシールドに対する照射態様とウィンドシールドガラスによる反射に基づく虚像の態様を示す模式図である。It is a schematic diagram which shows the aspect of the virtual image based on the irradiation aspect with respect to the windshield of the head-up display apparatus of Example 1, and the reflection by windshield glass. 実施例1のヘッドアップディスプレイ装置のインストルメントパネルとベゼルにより構成される開口の態様を示す模式断面図である。It is a schematic cross section which shows the aspect of the opening comprised by the instrument panel and bezel of the head-up display apparatus of Example 1. FIG. 実施例1のヘッドアップディスプレイ装置における制御処理を示すフローチャートである。3 is a flowchart illustrating a control process in the head-up display device according to the first embodiment. 実施例1のヘッドアップディスプレイ装置における開口に対応する従来技術の開口の態様を示す模式図である。It is a schematic diagram which shows the aspect of the opening of the prior art corresponding to the opening in the head-up display apparatus of Example 1. FIG. 実施例1のヘッドアップディスプレイ装置における制御処理の変形例を示すフローチャートである。6 is a flowchart illustrating a modification of control processing in the head-up display device according to the first embodiment. 本発明に係る実施例2のヘッドアップディスプレイ装置の概略構成を示す模式ブロック図である。It is a schematic block diagram which shows schematic structure of the head-up display apparatus of Example 2 which concerns on this invention. 実施例2のヘッドアップディスプレイ装置のインストルメントパネルとベゼルにより構成される開口の態様を示す模式断面図である。It is a schematic cross section which shows the aspect of the opening comprised by the instrument panel and bezel of the head-up display apparatus of Example 2. FIG. 実施例2のヘッドアップディスプレイ装置における制御処理を示すフローチャートである。6 is a flowchart illustrating a control process in the head-up display device according to the second embodiment.
 以下、本発明を実施するための形態について、添付図面を参照しながら説明する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.
 <実施例1>
 図1は、実施例1のヘッドアップディスプレイ装置1の概略構成を示す模式ブロック図である。図2は、実施例1のヘッドアップディスプレイ装置1のウィンドシールド2に対する照射態様とウィンドシールドガラス2による反射に基づく虚像Fの態様を示す模式図である。なお、図2中におけるFは車両前方を、Uは鉛直上方を、Rは車幅方向の右方を示す。
<Example 1>
FIG. 1 is a schematic block diagram illustrating a schematic configuration of a head-up display device 1 according to the first embodiment. FIG. 2 is a schematic diagram illustrating an aspect of the virtual image F based on the irradiation mode on the windshield 2 and the reflection by the windshield glass 2 of the head-up display device 1 of the first embodiment. In FIG. 2, F indicates the front of the vehicle, U indicates the vertically upper side, and R indicates the right side in the vehicle width direction.
 実施例1のヘッドアップディスプレイ装置1は、図1に示すように、車両のフロントウィンドシールド2に表示器3の表示画像を投影する凹面鏡4(投影部)と、フロントウィンドシールド2に設けられて表示画像を反射する反射部2aと、凹面鏡4の投影方向を凹面鏡アクチュエータ5により調整するHUDユニットECU6(Electronic Control Unit)の機能としての調整部6a(第1調整部)を含む。 As shown in FIG. 1, the head-up display device 1 according to the first embodiment is provided on the front windshield 2 and the concave mirror 4 (projection unit) that projects the display image of the display 3 onto the front windshield 2 of the vehicle. A reflection unit 2a that reflects a display image and an adjustment unit 6a (first adjustment unit) as a function of a HUD unit ECU 6 (Electronic Control Unit) that adjusts the projection direction of the concave mirror 4 by a concave mirror actuator 5 are included.
 さらにヘッドアップディスプレイ装置1は、凹面鏡4と反射部2aとの間に位置する図2に示すインストルメントパネル7が具備する開口部7aと、開口部7aに車両の前後方向に移動可能に設けられて表示画像を透過する開口8aを有する枠状のベゼル8(蓋部)と、ベゼル8を投影方向に応じて移動させる制御を行うHUDユニットECU6の機能としての制御部6bを、含む。なお、ここでは、開口部7aを有するパネルがインストルメントパネル7である形態について説明するが、開口部7aを有するパネルはインストルメントパネル7の全体である必要はなく、例えば、インストルメントパネル7のうちの開口部7aの周囲だけがインストルメントパネル7の本体とは別体にされたパネルであってもよい。 Furthermore, the head-up display device 1 is provided between the concave mirror 4 and the reflecting portion 2a, and has an opening 7a provided in the instrument panel 7 shown in FIG. 2, and the opening 7a is movable in the front-rear direction of the vehicle. A frame-shaped bezel 8 (lid portion) having an opening 8a that transmits a display image, and a control unit 6b as a function of the HUD unit ECU 6 that performs control to move the bezel 8 in accordance with the projection direction. In addition, although the form which the panel which has the opening part 7a is the instrument panel 7 is demonstrated here, the panel which has the opening part 7a does not need to be the whole instrument panel 7, For example, the panel of the instrument panel 7 Only the periphery of the opening 7 a may be a panel separated from the main body of the instrument panel 7.
 フロントウィンドシールド2は車両の前方側のガラスであり、室内側の表示画像が投影される領域の面に例えばコンバイナを設ける等の適宜の手段により反射部2aが形成されている。反射部2aは、フロントウィンドシールド2の車室内側の表面、又は、フロントウィンドシールド2の内部に形成される。なお、反射部2aに投影された表示画像が鉛直方向の上方に移動するとは、凹面鏡4(投影部)の投影方向が車両の車幅方向左方から見た場合に時計回りに変位することを指す。 The front windshield 2 is glass on the front side of the vehicle, and the reflecting portion 2a is formed by appropriate means such as providing a combiner on the surface of the area where the display image on the indoor side is projected. The reflecting portion 2 a is formed on the surface of the front windshield 2 on the vehicle interior side or inside the front windshield 2. Note that the display image projected on the reflecting portion 2a moves upward in the vertical direction means that the projection direction of the concave mirror 4 (projecting portion) is displaced clockwise when viewed from the left in the vehicle width direction of the vehicle. Point to.
 表示器3は、例えばLED素子を複数含むLEDアレイやバックライト付きのTFT画面により構成され、例えば車速や夜間の歩行者像などの所望の表示画像を凹面鏡4に対して照射する。凹面鏡4は投射された表示画像を拡大反射して開口8aを通過させてフロントウィンドシールド2の反射部2aに投影する機能を有する。 The display 3 is constituted by, for example, an LED array including a plurality of LED elements and a TFT screen with a backlight, and irradiates the concave mirror 4 with a desired display image such as a vehicle speed or a night pedestrian image. The concave mirror 4 has a function of enlarging and reflecting the projected display image, passing through the opening 8a, and projecting it onto the reflecting portion 2a of the front windshield 2.
 凹面鏡アクチュエータ5は、例えばブラシレスモータと周知のギヤ機構の組合せにより構成され、凹面鏡4の図示しない回転軸に駆動連結されて、HUDユニットECU6の調整部6aの調整指令に基づいて、凹面鏡4の角度θを調整する。なお実施例1では角度θは図2において鉛直方向上方に対する時計回りの角度であり投影方向と同義としている。もちろん水平方向を基準とした角度を用いてもよい。 The concave mirror actuator 5 is configured by, for example, a combination of a brushless motor and a known gear mechanism, and is drivingly connected to a rotating shaft (not shown) of the concave mirror 4, and the angle of the concave mirror 4 is determined based on an adjustment command from the adjustment unit 6 a of the HUD unit ECU 6. Adjust θ. In the first embodiment, the angle θ is a clockwise angle with respect to the upper vertical direction in FIG. 2 and is synonymous with the projection direction. Of course, an angle based on the horizontal direction may be used.
 HUDユニットECU6は、例えば、CPU、ROM、RAMおよびそれらを相互に接続するデータバスと、入出力インターフェース等から構成され、ROMに格納されたプログラムに従い、CPUが以下に述べる所定の処理を行う。HUDユニットECU6は上述した調整部6aと、制御部6bを構成する。 The HUD unit ECU 6 includes, for example, a CPU, a ROM, a RAM, a data bus that interconnects them, an input / output interface, and the like, and the CPU performs predetermined processing described below in accordance with a program stored in the ROM. The HUD unit ECU 6 constitutes the adjustment unit 6a and the control unit 6b described above.
 ベゼル8は、インストルメントパネル7の開口部7aに図示しない前後方向に延びるガイド機構を介して車両の前後方向に摺動可能に設けられる蓋部である。ベゼル8は凹面鏡4により投影される表示画像を透過する開口8aを含む。なお、ガイド機構は例えば開口部7a側に設けられる左右一対のガイドとベゼル8側に設けられる左右一対のレールとの組合せにより構成される。なお左右方向は車幅方向である。 The bezel 8 is a lid that is provided in the opening 7a of the instrument panel 7 so as to be slidable in the front-rear direction of the vehicle via a guide mechanism that extends in the front-rear direction (not shown). The bezel 8 includes an opening 8 a that transmits a display image projected by the concave mirror 4. The guide mechanism is constituted by a combination of a pair of left and right guides provided on the opening 7a side and a pair of left and right rails provided on the bezel 8 side, for example. The left-right direction is the vehicle width direction.
 表示高さ調整スイッチ9(第2調整部)は例えば車両の運転席のメータ近傍に設けられて、表示器3の生成する表示画像が凹面鏡4により投影され反射部2aに反射されることに基づいて結像された虚像の表示高さを運転者の選択に基づいて調整するものである。表示高さ調整スイッチ9は、HUDユニットECU6に対して、選択内容としての虚像すなわち表示画像の表示高さを含む表示高さ情報を出力する。 The display height adjustment switch 9 (second adjustment unit) is provided, for example, near the meter in the driver's seat of the vehicle, and is based on the fact that the display image generated by the display 3 is projected by the concave mirror 4 and reflected by the reflection unit 2a. The display height of the virtual image formed in this way is adjusted based on the driver's selection. The display height adjustment switch 9 outputs display height information including the display height of a virtual image, that is, a display image, as selection content to the HUD unit ECU 6.
 視線検知カメラ10(視線検知部)は、例えば、運転席のフロント側のインストルメントパネル7やルーフ下部に後方に向けて設けられるCMOSカメラである。視線検知カメラ10により撮像された画像データは内蔵されたマイクロコンピュータにおいて、例えば周知のエッジ検出やパターンマッチング等の所定の画像処理が施され、運転者の視線位置及び視線方向を含む視線位置情報が検出される。視線検知カメラ10のマイクロコンピュータは、検出結果である視線位置情報をHUDユニットECU6に対して出力する。 The line-of-sight detection camera 10 (line-of-sight detection unit) is, for example, a CMOS camera provided rearwardly on the instrument panel 7 on the front side of the driver's seat or the lower part of the roof. Image data captured by the line-of-sight detection camera 10 is subjected to predetermined image processing such as well-known edge detection and pattern matching in a built-in microcomputer, and line-of-sight position information including the driver's line-of-sight position and line-of-sight direction is obtained. Detected. The microcomputer of the line-of-sight detection camera 10 outputs line-of-sight position information as a detection result to the HUD unit ECU 6.
 ベゼル位置制御アクチュエータ11は、例えばブラシレスモータと周知のギヤ機構の組合せにより構成され、ベゼル8の有する図示しない例えばラック機構に駆動連結されて、HUDユニットECU6の制御部6bの位置制御指令に基づいて、ベゼル8の前後方向の位置Pを制御する。 The bezel position control actuator 11 is configured by, for example, a combination of a brushless motor and a known gear mechanism, and is drivingly connected to, for example, a rack mechanism (not shown) of the bezel 8 and is based on a position control command of the control unit 6b of the HUD unit ECU 6. The position P in the front-rear direction of the bezel 8 is controlled.
 以下に図2を用いて、表示器3から運転者の眼EYEBOXに至る光路について詳細に説明する。図2は開口8aを含む車幅方向に垂直な断面における各構成要素の相対位置を示している。EYEBOXとは運転者が虚像を視認可能な領域を示す。図2中楕円Aは統計上の例えば99%の人の視線が分布する範囲を示し、EYEBOX1はその範囲の中で一番高い位置のEYEBOXを示し、EYEBOX2はその範囲の中で一番低い位置のEYEBOXを示す。図2中の12はHUDユニットの外形を示す。 Hereinafter, the optical path from the display 3 to the driver's eye EYEBOX will be described in detail with reference to FIG. FIG. 2 shows the relative position of each component in the cross section perpendicular to the vehicle width direction including the opening 8a. EYEBOX indicates an area where the driver can visually recognize a virtual image. In FIG. 2, an ellipse A indicates a range in which, for example, 99% of human eyes are distributed statistically, EYEBOX1 indicates the highest EYEBOX in the range, and EYEBOX2 indicates the lowest position in the range. EYEBOX is shown. 2 in FIG. 2 shows the outer shape of the HUD unit.
 表示器3から車両の前方に照射された表示画像は、凹面鏡4によりウィンドシールド2の反射部2aに向けて投影され、高い位置のEYEBOX1に対応する虚像F1を結像するにあたっては図2中の破線で示すような光路が用いられる。表示画像は開口部7aの後方側に位置する斜線領域7arの開口8a(1)を通過して、反射部2aに表示画像が到達させる。つまり、角度θを鉛直方向に対して車両後方側に傾斜させるつまり投影方向を車両の後方に寝かせるよう調整部6aは凹面鏡アクチュエータ5を制御する。調整部6aによる凹面鏡アクチュエータ5の制御はフィードフォワード制御でも例えばホール素子を用いて角度θを検出した上でのフィードバック制御でもよい。 The display image irradiated from the display 3 to the front of the vehicle is projected toward the reflecting portion 2a of the windshield 2 by the concave mirror 4, and when forming the virtual image F1 corresponding to the high-position EYEBOX 1, the image shown in FIG. An optical path as indicated by a broken line is used. The display image passes through the opening 8a (1) of the hatched area 7ar located on the rear side of the opening 7a, and the display image reaches the reflecting portion 2a. That is, the adjustment unit 6a controls the concave mirror actuator 5 so that the angle θ is inclined toward the vehicle rear side with respect to the vertical direction, that is, the projection direction is laid behind the vehicle. The control of the concave mirror actuator 5 by the adjusting unit 6a may be feedforward control or feedback control after detecting the angle θ using a Hall element, for example.
 また、低い位置のEYEBOX2に対応する虚像F2を結像するにあたっては図2中の一点鎖線で示す光路が用いられる。表示画像は開口部7aの前方側に位置する斜線領域7afで示す開口8a(2)を通過して、反射部2aに表示画像が到達させる。つまり、角度θを鉛直方向に沿う側に傾斜させるつまり投影方向をほぼ鉛直方向上方に指向させるよう調整部6aは凹面鏡アクチュエータ5を制御する。 Further, when forming the virtual image F2 corresponding to the EYEBOX 2 at a low position, an optical path indicated by a one-dot chain line in FIG. 2 is used. The display image passes through the opening 8a (2) indicated by the hatched area 7af located on the front side of the opening 7a, and the display image reaches the reflecting portion 2a. That is, the adjustment unit 6a controls the concave mirror actuator 5 so that the angle θ is inclined to the side along the vertical direction, that is, the projection direction is directed substantially upward in the vertical direction.
 ここで高い位置のEYEBOX1に対応する虚像F1を結像するための図2の破線で示す光路を選択する場合には、開口部7aの後方側の斜線領域7arのみを開口すればよく、低い位置のEYEBOX2に対応する虚像F2を結像するための図2の一点鎖線で示す光路を選択する場合には、開口部7aの前方側の斜線領域7afのみを開口すればよい。なお、後方側の斜線領域7arの前後方向長さLrはウィンドシールド2が鉛直方向に対して上部が車両後方に傾斜しているため、幾何学的な性質により前方側の車線領域7afよりも長くなる。虚像F1と虚像F2の間に位置する虚像については破線で示す光路と一点鎖線で示す光路の間に位置する光路が適宜用いられる。 Here, when the optical path indicated by the broken line in FIG. 2 for forming the virtual image F1 corresponding to the high position EYEBOX 1 is selected, it is only necessary to open the hatched area 7ar on the rear side of the opening 7a, and the low position When the optical path shown by the alternate long and short dash line in FIG. 2 for forming the virtual image F2 corresponding to EYEBOX2 is selected, only the hatched area 7af on the front side of the opening 7a needs to be opened. Note that the length Lr in the front-rear direction of the rear hatched area 7ar is longer than the front lane area 7af due to geometrical properties because the windshield 2 is inclined upward in the rear of the vehicle with respect to the vertical direction. Become. For the virtual image positioned between the virtual image F1 and the virtual image F2, an optical path positioned between the optical path indicated by the broken line and the optical path indicated by the alternate long and short dash line is appropriately used.
 そこで実施例1では、ベゼル8の開口8aの前後方向の長さLを斜線領域7afの長さLfと斜線領域7arの長さLrのうち長い方である斜線領域7arの長さLrにマージンを含めた長さとし、ベゼル8を前後方向に、光路つまり投影方向に合わせて制御部6bの制御に基づいて移動させるものとしている。制御部6bによるベゼル位置アクチュエータ11の制御もフィードフォワード制御でも例えばホール素子を用いて位置Pを検出した上でのフィードバック制御でもよい。以下ベゼル8の移動形態についてより詳細に説明する。 Therefore, in the first embodiment, the length L in the front-rear direction of the opening 8a of the bezel 8 is set to the length Lr of the hatched area 7ar, which is the longer of the length Lf of the hatched area 7af and the length Lr of the hatched area 7ar. The bezel 8 is included, and the bezel 8 is moved in the front-rear direction based on the control of the control unit 6b in accordance with the optical path, that is, the projection direction. The control of the bezel position actuator 11 by the control unit 6b and feedforward control may be used, for example, feedback control after detecting the position P using a Hall element. Hereinafter, the movement form of the bezel 8 will be described in more detail.
 図3は、実施例1のヘッドアップディスプレイ装置1のインストルメントパネル7とベゼル8により構成される開口8aの態様を示す模式断面図である。なお、図3中におけるFは車両前方を、Uは鉛直上方を、Rは車幅方向の右方を示す。図3は、ベゼル8とインストルメントパネル7の開口部7aとの相対位置関係を示している。図3(a)はベゼル8が車両の前方F側に移動された場合の相対位置関係を示しており、図3(b)はベゼル8が車両の後方側に移動された場合の相対位置関係を示している。つまり図3(a)に示すベゼル8の位置は、図2に示した開口8a(2)を実現するベゼル8の位置を示し、図3(b)に示すベゼル8の位置は開口8a(1)を実現するベゼル8の位置を示す。 FIG. 3 is a schematic cross-sectional view showing an aspect of the opening 8a configured by the instrument panel 7 and the bezel 8 of the head-up display device 1 of the first embodiment. In FIG. 3, F indicates the front of the vehicle, U indicates the vertically upward direction, and R indicates the right side in the vehicle width direction. FIG. 3 shows the relative positional relationship between the bezel 8 and the opening 7 a of the instrument panel 7. FIG. 3A shows the relative positional relationship when the bezel 8 is moved to the front F side of the vehicle, and FIG. 3B is the relative positional relationship when the bezel 8 is moved to the rear side of the vehicle. Is shown. That is, the position of the bezel 8 shown in FIG. 3A indicates the position of the bezel 8 that realizes the opening 8a (2) shown in FIG. 2, and the position of the bezel 8 shown in FIG. ) Shows the position of the bezel 8.
 また、実施例1の調整部6aは投影方向を表示高さ調整スイッチ9からの表示高さ情報と視線検知カメラ10(視線検知部)からの視線位置情報の少なくともいずれかに基づいて調整することとし、反射部2aに投影される表示画像が鉛直方向上方に移動する、つまり、投影方向が車両の後方側に傾斜するにつれて、制御部6bはベゼル8を車両の後方側に移動させることとしている。 The adjusting unit 6a according to the first embodiment adjusts the projection direction based on at least one of display height information from the display height adjustment switch 9 and line-of-sight position information from the line-of-sight detection camera 10 (line-of-sight detection unit). The control unit 6b moves the bezel 8 to the rear side of the vehicle as the display image projected on the reflection unit 2a moves upward in the vertical direction, that is, as the projection direction tilts to the rear side of the vehicle. .
 次に実施例1のHUDユニットECU6の制御内容について図4に示すフローチャートを用いて説明する。図4は、実施例1のヘッドアップディスプレイ装置1における制御処理を示すフローチャートである。ステップS1に示すように、調整部6aは、視線検知カメラ10から視線位置情報を取得し、ステップS2において、虚像位置調整つまり凹面鏡4の角度θの調整を行う。 Next, the control contents of the HUD unit ECU 6 according to the first embodiment will be described with reference to the flowchart shown in FIG. FIG. 4 is a flowchart illustrating a control process in the head-up display device 1 according to the first embodiment. As shown in step S1, the adjustment unit 6a acquires line-of-sight position information from the line-of-sight detection camera 10, and performs virtual image position adjustment, that is, adjustment of the angle θ of the concave mirror 4 in step S2.
 ステップS3において調整部6aは視線位置に虚像位置が合致したか否かを判定し、肯定であればステップS4にすすみ、否定であればステップS2を再度行う。ステップS4において、調整部6aは表示高さ調整スイッチ9が運転者によりオンとされたか否かを判定し肯定であればステップS5にすすんで、表示高さ調整スイッチ9からの表示高さ情報に基づいて虚像位置の調整を行い、否定であれば虚像位置の調整は行わない。 In step S3, the adjustment unit 6a determines whether or not the virtual image position matches the line-of-sight position. If the result is affirmative, the process proceeds to step S4. If the result is negative, step S2 is performed again. In step S4, the adjustment unit 6a determines whether or not the display height adjustment switch 9 is turned on by the driver. If the determination is affirmative, the process proceeds to step S5, and the display height information from the display height adjustment switch 9 is displayed. Based on this, the virtual image position is adjusted. If the result is negative, the virtual image position is not adjusted.
 ステップS5の処理が終了した後は、ステップS6にすすみ、制御部6bは、ステップS5の処理終了後の凹面鏡4の角度θからベゼル8の前後方向の位置Pをウィンドシールド2の幾何学的形状から定まる第一所定関数に基づいて演算し、ステップS7にすすんでベゼル8の位置Pに移動させる制御を行う。 After the process of step S5 is completed, the process proceeds to step S6, and the control unit 6b determines the position P in the front-rear direction of the bezel 8 from the angle θ of the concave mirror 4 after the process of step S5 is finished. Is calculated based on the first predetermined function determined from step S7, and the control proceeds to step S7 to move to the position P of the bezel 8.
 ステップS4の否定処理が終了した後は、ステップS8にすすみ、制御部6bは、ステップS4の否定処理終了後の凹面鏡4の角度θからベゼル8の前後方向の位置Pをウィンドシールド2の幾何学的形状とウィンドシールド2と凹面鏡4との位置関係等から定まる第一所定関数に基づいて演算し、ステップS9にすすんでベゼル8の位置Pに移動させる制御を行う。 After the negative process in step S4 is completed, the process proceeds to step S8, and the controller 6b determines the position P in the front-rear direction of the bezel 8 from the angle θ of the concave mirror 4 after the negative process in step S4 is finished. Calculation is performed based on a first predetermined function determined from the target shape and the positional relationship between the windshield 2 and the concave mirror 4, and the control proceeds to step S9 to move to the position P of the bezel 8.
 以上述べた実施例1のヘッドアップディスプレイ装置1によれば以下に述べる作用効果を得ることができる。ここで、図5は、実施例1のヘッドアップディスプレイ装置1における開口8aに対応する従来技術の開口108aの態様を示す模式図である。実施例1であれば開口8aを照射方向に合わせて必要最小限の大きさとすることができる。すなわち、従来技術であれば、インストルメントパネル7の開口部7aに対応するベゼル108の開口108aは、凹面鏡4の投影方向の全てにおいて表示画像を透過させる必要があることから、開口部7aとほぼ同等の大きさとする必要があり、開口108aからインストルメントパネル7の内部が見えてしまい意匠性を高めることが難しいところを実施例1では意匠性を高めることができる。 According to the head-up display device 1 of the first embodiment described above, the following effects can be obtained. Here, FIG. 5 is a schematic diagram showing an aspect of the prior art opening 108a corresponding to the opening 8a in the head-up display device 1 of the first embodiment. In the first embodiment, the opening 8a can be made the minimum necessary size in accordance with the irradiation direction. That is, according to the prior art, the opening 108a of the bezel 108 corresponding to the opening 7a of the instrument panel 7 needs to transmit the display image in all the projection directions of the concave mirror 4, and therefore is almost the same as the opening 7a. In Example 1, it is necessary to make it the same size, and it is difficult to improve the designability because the inside of the instrument panel 7 can be seen from the opening 108a.
 なお、図6は、実施例1のヘッドアップディスプレイ装置における制御処理の変形例を示すフローチャートである。上述した実施例1では虚像位置の調整を視線位置情報と表示高さ情報の双方を用いて調整することとしたが、図6に示すように表示高さ情報のみに基づいて調整することもできる。 FIG. 6 is a flowchart showing a modification of the control process in the head-up display device of the first embodiment. In the first embodiment described above, the virtual image position is adjusted using both the line-of-sight position information and the display height information. However, as shown in FIG. 6, the virtual image position can be adjusted based only on the display height information. .
 <実施例2>
 図7は、実施例2のヘッドアップディスプレイ装置1の構成を示すブロック図である。図8は、実施例2のヘッドアップディスプレイ装置1のインストルメントパネル7とベゼル81、82により構成される開口80aの態様を示す断面図である。
<Example 2>
FIG. 7 is a block diagram illustrating a configuration of the head-up display device 1 according to the second embodiment. FIG. 8 is a cross-sectional view illustrating an aspect of an opening 80a configured by the instrument panel 7 and the bezels 81 and 82 of the head-up display device 1 according to the second embodiment.
 実施例1においては投影方向に合わせてベゼル8の前後方向の位置Pのみを制御するものとしたが、ベゼル8を前後方向に二分割してそれぞれを独立に制御することにより、投影方向に合わせて開口の前後方向の長さも併せて制御することもできる。以下それについての実施例2について述べる。 In the first embodiment, only the position P in the front-rear direction of the bezel 8 is controlled in accordance with the projection direction. However, the bezel 8 is divided into two in the front-rear direction and each is controlled independently to match the projection direction. Thus, the length of the opening in the front-rear direction can also be controlled. The second embodiment will be described below.
 実施例2のヘッドアップディスプレイ装置1は図7に示すように、前後一対のベゼル81、82を含み、それぞれを独立して制御可能なベゼル位置アクチュエータ111、112を含み、HUDユニットECU6の制御部6bがベゼル位置アクチュエータ111、112を統括的に制御する点が実施例1と相違する。 As shown in FIG. 7, the head-up display device 1 of the second embodiment includes a pair of front and rear bezels 81 and 82, bezel position actuators 111 and 112 that can be controlled independently, and a control unit of the HUD unit ECU 6. The point that 6b comprehensively controls the bezel position actuators 111 and 112 is different from the first embodiment.
 つまり実施例2では、図8に示すように、開口80aの後方側に位置するベゼル81と、前方側に位置するベゼル82を含んでおり、ベゼル81とベゼル82の前後方向の位置をそれぞれ独立して制御することにより、開口80aの前後方向の長さを、図8(a)に示す前方側の位置では長さL2とし、図8(b)に示す後方側の位置では長さL1(L1>L2)として開口量を制御することとしている。なお投影方向つまり凹面鏡4の角度θとは第二所定関係を有しており、反射部2aに投影される表示画像が鉛直方向上方に移動する、つまり、投影方向が車両の後方側に傾斜するにつれて、開口量を大きくするものとしている。 That is, in the second embodiment, as shown in FIG. 8, a bezel 81 located on the rear side of the opening 80a and a bezel 82 located on the front side are included, and the positions of the bezel 81 and the bezel 82 in the front-rear direction are independent. Thus, the length in the front-rear direction of the opening 80a is set to the length L2 at the front position shown in FIG. 8A, and the length L1 (at the rear position shown in FIG. 8B). The opening amount is controlled as L1> L2). Note that the projection direction, that is, the angle θ of the concave mirror 4 has a second predetermined relationship, and the display image projected on the reflecting portion 2a moves upward in the vertical direction, that is, the projection direction tilts toward the rear side of the vehicle. Accordingly, the opening amount is increased.
 次に実施例1のHUDユニットECU6の制御内容について図9に示すフローチャートを用いて説明する。図9は、実施例2のヘッドアップディスプレイ装置1における制御処理を示すフローチャートである。ステップS1~ステップS5までの処理は図4に示したものと同様である。 Next, the control contents of the HUD unit ECU 6 according to the first embodiment will be described with reference to the flowchart shown in FIG. FIG. 9 is a flowchart illustrating a control process in the head-up display device 1 according to the second embodiment. The processing from step S1 to step S5 is the same as that shown in FIG.
 ステップS5の処理が終了した後は、ステップS6-1にすすみ、制御部6bは、ステップS5の処理終了後の凹面鏡4の角度θからベゼル81、82の開口80aの長さつまり開口量とその開口量を実現しかつ凹面鏡4の角度θに対応する前後方向の位置P1、P2をウィンドシールド2の幾何学的形状とウィンドシールド2と凹面鏡4との位置関係等から定まる第二所定関数に基づいて演算し、制御部6bは、ステップS7-1にすすんでベゼル81、82のそれぞれ独立した位置P1、P2に移動させる制御を行う。 After the processing of step S5 is completed, the process proceeds to step S6-1, and the control unit 6b determines the length of the opening 80a of the bezels 81 and 82, that is, the opening amount and the amount thereof from the angle θ of the concave mirror 4 after the processing of step S5. The positions P1 and P2 in the front-rear direction corresponding to the angle θ of the concave mirror 4 that realize the opening amount are based on a second predetermined function that is determined from the geometric shape of the windshield 2, the positional relationship between the windshield 2 and the concave mirror 4, and the like. The control unit 6b proceeds to step S7-1 and performs control to move the bezels 81 and 82 to the independent positions P1 and P2, respectively.
 ステップS4の否定処理が終了した後は、ステップS8-1にすすみ、制御部6bは、ステップS4の否定処理終了後の凹面鏡4の角度θからベゼル81、82の開口80aの長さつまり開口量とその開口量を実現しかつ凹面鏡4の角度θに対応する前後方向のそれぞれの位置P1、P2をウィンドシールド2の幾何学的形状とウィンドシールド2と凹面鏡4との位置関係等から定まる第二所定関数に基づいて演算し、ステップS9-1にすすんでベゼル81、82をそれぞれの位置P1、P2に移動させる制御を行う。 After the negative process in step S4 is completed, the process proceeds to step S8-1, and the control unit 6b determines the length of the opening 80a of the bezels 81 and 82, that is, the opening amount from the angle θ of the concave mirror 4 after the negative process in step S4. And a position P1 and P2 in the front-rear direction corresponding to the angle θ of the concave mirror 4 are determined from the geometric shape of the windshield 2, the positional relationship between the windshield 2 and the concave mirror 4, and the like. Calculation is performed based on a predetermined function, and control proceeds to step S9-1 to move the bezels 81 and 82 to the respective positions P1 and P2.
 以上述べた実施例2のヘッドアップディスプレイ装置1によれば以下に述べる作用効果を得ることができる。つまり、実施例1と同様に開口80aを照射方向に合わせて必要最小限の大きさとすることができる。さらに、ベゼル81、82の前後方向の位置P1、P2に併せて、後方側に行くほど開口80aの長さを長くして、特にベゼル81、82が前方側に位置する場合の開口80aをより小さくすることができる。つまり、実施例2では意匠性をさらに高めることができる。 According to the head-up display device 1 of the second embodiment described above, the following effects can be obtained. That is, as in the first embodiment, the opening 80a can be made the minimum necessary size in accordance with the irradiation direction. Further, in addition to the front and rear positions P1, P2 of the bezels 81, 82, the length of the opening 80a is increased toward the rear side, and the opening 80a in the case where the bezels 81, 82 are located on the front side is further increased. Can be small. That is, in Example 2, the design property can be further improved.
 以上本発明の実施例について詳細に説明したが、本発明は上述した実施例に制限されることなく、本発明の範囲を逸脱することなく、上述した実施例に種々の変形および置換を加えることができる。 Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above-described embodiments, and various modifications and substitutions can be made to the above-described embodiments without departing from the scope of the present invention. Can do.
 例えば上述した実施例では投影方向を決定する投影部は凹面鏡と凹面鏡アクチュエータにより構成しているが例えば表示器と表示器の角度を制御するアクチュエータに組合せに置換してもよく、その他の手段があればその他の手段を用いてもよい。 For example, in the above-described embodiment, the projection unit that determines the projection direction is constituted by a concave mirror and a concave mirror actuator. However, for example, a combination with an actuator that controls the angle between the display and the display may be replaced with other means. Other means may be used.
 尚、本国際出願は、2013年4月19日に出願した日本国特許出願2013-088763号に基づく優先権を主張するものであり、その全内容は本国際出願にここでの参照により援用されるものとする。 Note that this international application claims priority based on Japanese Patent Application No. 2013-087763 filed on April 19, 2013, the entire contents of which are incorporated herein by reference. Shall.
 1   ヘッドアップディスプレイ(HUD)装置
 2   フロントウィンドシールド(ガラス)
 2a  反射部
 3   表示器
 4   凹面鏡(投影部)
 5   凹面鏡アクチュエータ
 6   HUDユニットECU
 6a  調整部
 6b  制御部
 7   インストルメントパネル
 7a  開口部
 8   ベゼル
 8a  開口
 9   表示高さ調整スイッチ
10   視線検知カメラ
11   ベゼル位置制御アクチュエータ
12   HUDユニット
 81  ベゼル(後方側)
 82  ベゼル(前方側)
 80a 開口
111  ベゼル位置制御アクチュエータ(後方側)
112  ベゼル位置制御アクチュエータ(前方側)
1 Head-up display (HUD) device 2 Front windshield (glass)
2a Reflector 3 Display 4 Concave mirror (projector)
5 Concave mirror actuator 6 HUD unit ECU
6a adjustment unit 6b control unit 7 instrument panel 7a opening 8 bezel 8a opening 9 display height adjustment switch 10 line of sight detection camera 11 bezel position control actuator 12 HUD unit 81 bezel (rear side)
82 Bezel (front side)
80a Opening 111 Bezel position control actuator (rear side)
112 Bezel position control actuator (front side)

Claims (5)

  1.  車両のフロントウィンドシールドに表示画像を投影する投影部と、
     前記投影部の投影方向を調整する第1調整部と、
     前記フロントウィンドシールドに設けられて前記表示画像を反射する反射部と、
     前記投影部と前記反射部との間に位置する開口部に前記車両の前後方向に移動可能に設けられて前記表示画像を透過する開口を有する蓋部と、
     当該蓋部を前記投影方向に応じて移動させる制御を行う制御部と
     を含む、ヘッドアップディスプレイ装置。
    A projection unit that projects a display image on a front windshield of the vehicle;
    A first adjustment unit for adjusting a projection direction of the projection unit;
    A reflective portion provided on the front windshield for reflecting the display image;
    A lid that is provided in an opening located between the projection unit and the reflection unit so as to be movable in the front-rear direction of the vehicle and has an opening that transmits the display image;
    A head-up display device, comprising: a control unit that performs control to move the lid unit according to the projection direction.
  2.  前記開口部を有するパネルをさらに含む、請求項1記載のヘッドアップディスプレイ装置。 The head-up display device according to claim 1, further comprising a panel having the opening.
  3.  前記表示画像の表示高さを調整する第2調整部と、
     運転者の視線位置を検知する視線検知部と
     をさらに含み、
     前記第1調整部は、前記投影方向を前記第2調整部からの表示高さ情報と前記視線検知部からの視線位置情報の少なくともいずれかに基づいて調整する、請求項1又は2に記載のヘッドアップディスプレイ装置。
    A second adjustment unit for adjusting a display height of the display image;
    And a line-of-sight detection unit that detects the position of the driver's line of sight,
    3. The first adjustment unit according to claim 1, wherein the first adjustment unit adjusts the projection direction based on at least one of display height information from the second adjustment unit and gaze position information from the gaze detection unit. Head-up display device.
  4.  前記反射部に投影された前記表示画像が鉛直方向の上方に移動するにつれて、前記制御部は前記蓋部を前記車両の後方側に移動させる、請求項3に記載のヘッドアップディスプレイ装置。 The head-up display device according to claim 3, wherein the control unit moves the lid to the rear side of the vehicle as the display image projected on the reflection unit moves upward in the vertical direction.
  5.  前記制御部が前記開口の開口量を制御するとともに、前記制御部は前記反射部に投影された前記表示画像が鉛直方向の上方に移動するにつれて、前記開口量を大きくする、請求項4に記載のヘッドアップディスプレイ装置。 The control unit controls the opening amount of the opening, and the control unit increases the opening amount as the display image projected on the reflecting unit moves upward in the vertical direction. Head up display device.
PCT/JP2014/058558 2013-04-19 2014-03-26 Head-up display device WO2014171280A1 (en)

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