WO2014171280A1 - Dispositif d'affichage tête haute - Google Patents

Dispositif d'affichage tête haute 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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WO
WIPO (PCT)
Prior art keywords
unit
opening
head
display
display device
Prior art date
Application number
PCT/JP2014/058558
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English (en)
Japanese (ja)
Inventor
宗史 沖田
Original Assignee
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by トヨタ自動車株式会社 filed Critical トヨタ自動車株式会社
Publication of WO2014171280A1 publication Critical patent/WO2014171280A1/fr

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0123—Head-up displays characterised by optical features comprising devices increasing the field of view
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0187—Display 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
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Abstract

La présente invention vise à proposer un dispositif d'affichage tête haute dans lequel la dimension d'une ouverture peut être plus petite et l'aspect peut être amélioré. Le dispositif d'affichage tête haute comprend : une unité de projection pour projeter une image d'affichage sur le pare-brise avant d'un véhicule ; une première unité d'ajustement pour ajuster la direction de projection de l'unité de projection ; une unité de réflexion placée sur le pare-brise avant pour réfléchir l'image d'affichage ; une unité couvercle placée de façon à pouvoir exécuter un mouvement dans la direction avant–arrière du véhicule vers une partie d'ouverture positionnée entre l'unité de projection et l'unité de réflexion, et ayant une ouverture pour transmettre l'image d'affichage ; et une unité de commande pour exécuter une commande de façon à déplacer l'unité couvercle selon la direction de projection.
PCT/JP2014/058558 2013-04-19 2014-03-26 Dispositif d'affichage tête haute WO2014171280A1 (fr)

Applications Claiming Priority (2)

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JP2013-088763 2013-04-19
JP2013088763A JP2014210537A (ja) 2013-04-19 2013-04-19 ヘッドアップディスプレイ装置

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11002964B2 (en) 2019-05-30 2021-05-11 Toyota Motor Engineering & Manufacturing North America, Inc. Heads up display unit assembly guide and protector
US11353701B2 (en) 2019-06-19 2022-06-07 Toyota Motor Engineering & Manufacturing North America. Inc. Multi-piece heads up display bezel with long chute
DE102021101432A1 (de) 2021-01-22 2022-07-28 Bayerische Motoren Werke Aktiengesellschaft Waveguide-basierte Projektionsanzeigevorrichtung mit einem dynamischen Streulichtabsorber für ein Fahrzeug

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Publication number Priority date Publication date Assignee Title
JP6443122B2 (ja) 2015-02-24 2018-12-26 日本精機株式会社 車両用表示装置
JP6512016B2 (ja) 2015-07-27 2019-05-15 日本精機株式会社 車両用表示装置
WO2017061026A1 (fr) * 2015-10-09 2017-04-13 日立マクセル株式会社 Dispositif d'affichage d'image
JP6414096B2 (ja) 2016-02-17 2018-10-31 トヨタ自動車株式会社 車載装置、車載装置の制御方法及び車載装置の制御プログラム
JP2018054845A (ja) * 2016-09-28 2018-04-05 京セラ株式会社 投影装置、移動体、及び投影方法
US20210116710A1 (en) 2017-03-28 2021-04-22 Nippon Seiki Co., Ltd. Vehicular display device
WO2019224922A1 (fr) * 2018-05-22 2019-11-28 三菱電機株式会社 Dispositif de commande d'affichage tête haute, système d'affichage tête haute et procédé de commande d'affichage tête haute
JP7052654B2 (ja) * 2018-09-11 2022-04-12 株式会社豊田自動織機 パネル構造
JP7367525B2 (ja) * 2019-12-26 2023-10-24 株式会社リコー 表示装置、表示システムおよび移動体

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JPH06199150A (ja) * 1992-12-28 1994-07-19 Nissan Motor Co Ltd 車両用表示装置
JP2002036909A (ja) * 2000-07-24 2002-02-06 Yazaki Corp 車両用表示装置
JP2002052955A (ja) * 2000-08-10 2002-02-19 Yazaki Corp 車両用表示装置
JP2003237411A (ja) * 2002-02-12 2003-08-27 Denso Corp ヘッドアップディスプレイ装置
JP2010097193A (ja) * 2008-09-17 2010-04-30 Toshiba Corp 表示装置及び移動体

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06199150A (ja) * 1992-12-28 1994-07-19 Nissan Motor Co Ltd 車両用表示装置
JP2002036909A (ja) * 2000-07-24 2002-02-06 Yazaki Corp 車両用表示装置
JP2002052955A (ja) * 2000-08-10 2002-02-19 Yazaki Corp 車両用表示装置
JP2003237411A (ja) * 2002-02-12 2003-08-27 Denso Corp ヘッドアップディスプレイ装置
JP2010097193A (ja) * 2008-09-17 2010-04-30 Toshiba Corp 表示装置及び移動体

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11002964B2 (en) 2019-05-30 2021-05-11 Toyota Motor Engineering & Manufacturing North America, Inc. Heads up display unit assembly guide and protector
US11353701B2 (en) 2019-06-19 2022-06-07 Toyota Motor Engineering & Manufacturing North America. Inc. Multi-piece heads up display bezel with long chute
DE102021101432A1 (de) 2021-01-22 2022-07-28 Bayerische Motoren Werke Aktiengesellschaft Waveguide-basierte Projektionsanzeigevorrichtung mit einem dynamischen Streulichtabsorber für ein Fahrzeug

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