WO2015182026A1 - ヘッドアップディスプレイ装置 - Google Patents

ヘッドアップディスプレイ装置 Download PDF

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Publication number
WO2015182026A1
WO2015182026A1 PCT/JP2015/001759 JP2015001759W WO2015182026A1 WO 2015182026 A1 WO2015182026 A1 WO 2015182026A1 JP 2015001759 W JP2015001759 W JP 2015001759W WO 2015182026 A1 WO2015182026 A1 WO 2015182026A1
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WO
WIPO (PCT)
Prior art keywords
posture
optical member
eye
axis
visual recognition
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/JP2015/001759
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English (en)
French (fr)
Japanese (ja)
Inventor
亮 山岡
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Denso Corp
Original Assignee
Denso Corp
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 Denso Corp filed Critical Denso Corp
Priority to US15/108,807 priority Critical patent/US20160320624A1/en
Priority to DE112015002481.6T priority patent/DE112015002481T5/de
Publication of WO2015182026A1 publication Critical patent/WO2015182026A1/ja
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G02B27/01—Head-up displays
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/10—Input arrangements, i.e. from user to vehicle, associated with vehicle functions or specially adapted therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
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    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/60—Instruments characterised by their location or relative disposition in or on vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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    • G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
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    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/149—Instrument input by detecting viewing direction not otherwise provided for
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/20—Optical features of instruments
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    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
    • G—PHYSICS
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    • G02B2027/0145—Head-up displays characterised by optical features creating an intermediate image
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    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
    • G02B2027/0159—Head-up displays characterised by mechanical features with movable elements with mechanical means other than scaning means for positioning the whole image
    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0161—Head-up displays characterised by mechanical features characterised by the relative positioning of the constitutive elements
    • G02B2027/0163—Electric or electronic control thereof
    • G—PHYSICS
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    • G02B2027/0181—Adaptation to the pilot/driver
    • G—PHYSICS
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    • 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
    • G—PHYSICS
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    • G02B27/01—Head-up displays
    • G02B27/0149—Head-up displays characterised by mechanical features

Definitions

  • the present disclosure relates to a head-up display device (hereinafter referred to as a HUD device).
  • a HUD device head-up display device
  • a HUD device that is mounted on a moving body and displays a virtual image so as to be visually recognized by an occupant by projecting an image onto a projection member of the moving body.
  • Patent Document 1 in addition to the HUD device, an adjustment display, a mirror, and an object to be photographed are used.
  • the worker stops the vehicle at a predetermined position, and fixes the mirror and the object to be photographed at the predetermined position. Further, the operator adjusts the HUD device while viewing a display on which an image obtained by photographing the object to be photographed by the outside detection camera and an image obtained by photographing the mirror by the driver detection camera are displayed.
  • Patent Document 1 such a complicated adjustment as described above is necessary, and it is troublesome and difficult to adjust the display position according to the position of the occupant's eyes.
  • An object of the present disclosure is to provide a HUD device that can be automatically adjusted so that a virtual image is displayed at a display position in accordance with the position of an occupant's eye.
  • a head that is mounted on a moving body having an imaging unit that captures the eyes of an occupant and projects an image onto a projection member of the moving body so that a virtual image can be viewed by an occupant in a viewing area
  • the up-display device has an optical member that can be changed in posture.
  • the visual recognition area is moved according to the posture of the optical member.
  • the head-up display device includes an adjustment unit that automatically adjusts the posture of the optical member based on a relative position with respect to the visual recognition region of the eye photographed by the photographing unit.
  • FIG. 2nd Embodiment It is a schematic diagram which shows the optical system of the HUD apparatus in 2nd Embodiment. It is a schematic diagram explaining the relationship between the visual recognition area
  • the HUD device 100 As shown in FIG. 1, the HUD device 100 according to the first embodiment is mounted on a vehicle 1 that is a kind of moving body and is housed in an instrument panel 2.
  • the HUD device 100 projects an image on a windshield 3 as a projection member of the vehicle 1.
  • the HUD device 100 causes the occupant's eyes 7 to visually recognize the image as the virtual image 10 in the visual recognition region 12 in the vehicle 1. That is, the light of the image reflected by the windshield 3 reaches the position of the occupant's eye 7, and the occupant perceives the light.
  • vehicle state values such as vehicle speed or fuel remaining amount, or vehicle information such as road information or visibility assistance information.
  • the surface on the indoor side forms a projection surface 3a on which an image is projected in a curved concave shape or a flat planar shape.
  • the windshield 3 may have an angle difference for overlapping virtual images formed by reflecting each surface between the indoor-side surface and the outdoor-side surface.
  • the windshield 3 may be provided with a vapor deposition film or a film in order to suppress the brightness of the virtual image due to the reflection of the outdoor surface.
  • a combiner separate from the vehicle 1 may be installed in the vehicle 1, and an image may be projected onto the combiner.
  • the vertical direction of the vehicle 1 on the horizontal plane is defined as the z direction.
  • the front-rear direction of the vehicle 1 that displays the virtual image 10 in front is defined as the x direction.
  • the left-right direction of the vehicle 1 that displays the virtual image 10 in front is defined as the y direction.
  • the HUD device 100 includes an optical system 20 and a control circuit 30 that controls the optical system 20.
  • the optical system 20 includes a projector 22, a plane mirror 24, a concave mirror 26, and a dustproof sheet 28.
  • the projector 22 is a liquid crystal projector, and forms an image by transmitting light from an internal light source (not shown) through the liquid crystal panel 22a on the surface, and the light of the image is incident on the plane mirror 24 as a light beam. Project toward.
  • a light emitting element composed of a light emitting diode is employed as a light source
  • a dot matrix type color TFT liquid crystal panel is employed as the liquid crystal panel 22a.
  • the projector 22 may have another configuration as long as it can project an image.
  • the projector 22 may be a MEMS scanner type projector using a laser or an organic EL type projector.
  • the plane mirror 24 is formed by vapor-depositing aluminum as the reflecting surface 24a on the surface of a base material made of synthetic resin or glass.
  • the reflection surface 24a is formed in a smooth flat shape. With this shape, the plane mirror 24 reflects the light of the image from the projector 22 toward the concave mirror 26.
  • the concave mirror 26 is formed by evaporating aluminum as the reflecting surface 26a on the surface of a base material made of synthetic resin or glass.
  • the reflecting surface 26a is formed in a smooth curved surface as a concave surface in which the center of the concave mirror 26 is recessed. More specifically, in order to suppress distortion generated in the virtual image of the image projected on the projection surface 3a of the windshield 3, it is formed in an aspherical shape corresponding to the shape of the projection surface 3a, more strictly, a free-form surface shape. ing.
  • Such an aspherical shape is set in consideration of the vertical movement of the virtual image 10 according to the posture of the concave mirror 26 by rotational driving around a first axis 26c described later. With this shape, the concave mirror 26 reflects the image light from the plane mirror 24 toward the windshield 3 of the vehicle 1 located above the HUD device 100 through the dustproof sheet 28.
  • the concave mirror 26 is disposed so as to pass through the center of the concave mirror 26 and has a first axis 26c along the y direction.
  • the concave mirror 26 is rotationally driven around the first shaft 26c by the stepping motor 26b in accordance with a drive signal from the control circuit 30 described later. That is, the concave mirror 26 is an optical member that can be changed in posture.
  • the stepping motor 26 b corresponds to a drive unit that drives the concave mirror 26.
  • the dustproof sheet 28 is formed in a plate shape having translucency by a synthetic resin such as polycarbonate resin.
  • the dustproof sheet 28 closes the opening of the housing 40 that accommodates the optical system 20, thereby transmitting the image light from the concave mirror 26 toward the windshield 3 of the vehicle 1, and dust or the like outside the HUD device 100 is Intrusion into the interior of 100 is prevented.
  • the light of the image projected on the windshield 3 reaches the visual recognition area 12 behind the windshield 3 as a light flux. If the position PE of the occupant's eye 7 is within the visual recognition area 12, the light of the image can be visually recognized as the front virtual image 10, and if it is outside the visual recognition area 12, the light of the image is sufficiently visible as the virtual image 10. I can't.
  • the change in the posture of the concave mirror 26 in the optical system 20 will be described below with reference to FIGS.
  • the reflection angle of the image light is changed by changing the posture of the concave mirror 26, that is, the angle of the reflecting surface 26a.
  • the projection location and incident angle in the windshield 3 of the light of the image in which the reflection angle is changed are also changed, and the range in which the light of the image as a light beam reaches is changed accordingly.
  • the posture of the concave mirror 26 is changed, the visual recognition area 12 moves according to the posture of the concave mirror 26.
  • the viewing area 12 is in the z direction and is relative to the vehicle 1.
  • the display position of the virtual image 10 displayed in front of the vehicle 1 is, for example, in the z direction and moves downward with respect to the vehicle 1.
  • the concave mirror 26 is driven to rotate to the other side around the first shaft 26 c, for example, the visual recognition region 12 moves in the z direction and downward with respect to the vehicle 1.
  • the display position of the virtual image 10 is, for example, in the z direction and moves upward with respect to the vehicle 1.
  • the optical system 20 moves the visual recognition area 12 in the z direction by changing the posture of the concave mirror 26 by rotational driving around the first axis 26c.
  • a range in which the visual recognition area 12 moves in the z direction according to the posture of the concave mirror 26 by the optical system 20 is defined as a movable area 14.
  • the relationship between the visual recognition area 12 and the movable area 14 becomes clear from FIG.
  • the direction perpendicular to the longitudinal direction of the vehicle 1 on the plane perpendicular to the z direction is the y direction.
  • the control circuit 30 is an electronic circuit formed mainly of a microcomputer (not shown), for example. As shown in FIG. 6, the control circuit 30 is electrically connected to the projector 22 and the stepping motor 26 b of the concave mirror 26.
  • the control circuit 30 can communicate with the in-vehicle camera 6 a, the meter 4, the seat sensor 5 a that detects the position of the seat 5 on which the occupant is seated, and the like via the in-vehicle LAN 9.
  • the control circuit 30 controls the display state of the projector 22 and the attitude of the concave mirror 26 based on signals input from the in-vehicle camera 6a, the meter 4, and the seat sensor 5a, and outputs a signal to the meter 4. It is possible.
  • the meter 4 displays, for example, a vehicle state value by instructing a scale as an index by a pointer, and also displays vehicle information, a warning, and the like by image display using a liquid crystal display or the like. Display device.
  • the in-vehicle camera 6a is, for example, a CCD camera that can detect infrared light, and is disposed above the windshield 3 as shown in FIGS. 1 and 4, and is close to the optical axis of the camera 6a.
  • An infrared light source (not shown) is provided at the position.
  • the in-vehicle camera 6a is an occupant because it is used in the monitoring system 6 that generates an alarm sound for a driver who is predicted to feel drowsy, for example, by photographing the facial expression of the driver who is the occupant.
  • the driver's eye 7 can be photographed.
  • step S10 the passenger's eye 7 is photographed. Specifically, the in-vehicle camera 6 a captures an expression including the occupant's eyes 7, and the captured image data is input to the control circuit 30. After the process of step S10, the process proceeds to step S20.
  • step S20 the position PE of the occupant's eye 7 is calculated.
  • a cornea reflection image of the occupant's eye 7 using an infrared light source is extracted from the captured image data obtained in step S10.
  • the position PE of the eye 7 is calculated from the position of the corneal reflection image in the captured image data in consideration of the arrangement of the in-vehicle camera 6a and the infrared light source. Note that the position of the eye 7 may be calculated by other methods.
  • step S30 it is determined whether or not the position PE of the eye 7 is within the movable region 14 in the z direction.
  • a memory (not shown) of the control circuit 30 stores a range in the z direction of the movable region 14 in advance, and the position PE of the eye 7 calculated in step S20 is within the range in the z direction. It is determined whether or not. In particular, in the present embodiment, the right eye 7 and the left eye 7 are determined, and if both eyes 7 are not within the range, a negative determination is made. If one eye 7 is within the range, an affirmative determination may be made. If an affirmation judging is made at Step S30, it will move to Step S40. On the other hand, if a negative determination is made in step S30, the process proceeds to step S32.
  • step S40 the ideal posture of the concave mirror 26 is calculated. Specifically, the ideal posture of the concave mirror 26 associated with the position PE of the eye 7 calculated in step S20 is calculated. Then, based on the relative position of the eye 7 with respect to the current visual recognition area 12 calculated in step S20, the rotational driving amount of the first shaft 26c so that the concave mirror 26 assumes an ideal posture is calculated.
  • the ideal posture in the present embodiment indicates the posture of the concave mirror 26 such that the position PE of the eye 7 calculated in step S20 is the center of the range of the visual recognition area 12 in the z direction.
  • the first shaft 26c can be rotated to approach the center because the eye 7 cannot be moved so as to be centered.
  • the posture at the limit of driving is the ideal posture.
  • step S50 the posture of the concave mirror 26 is adjusted. Based on the rotation driving amount of the first shaft 26c calculated in step S40, the stepping motor 26b to which the drive signal is input rotates the concave mirror 26 around the first shaft 26c, and the posture is changed. . A series of processing is complete
  • step S30 if it is determined in step S30 that the position PE of the occupant's eye 7 is out of the movable region 14 in the z direction, a warning is given to the occupant. Specifically, when the control circuit 30 outputs a warning signal to the meter 4, a warning message is displayed on the liquid crystal display of the meter 4. In particular, in the present embodiment, a warning is given to change the height HS of the seat 5 on which the occupant is seated. After a predetermined time of the process in step S32, the process proceeds to step S34.
  • step S34 it is determined whether or not the height HS of the sheet 5 has been changed. Specifically, the seat sensor 5 a detects that the height HS of the seat 5 has been changed by an occupant, and determines whether or not a detection signal from the seat sensor 5 a is input to the control circuit 30. If an affirmative determination is made in step S34, the imaging in step S10 is started again. That is, an operation for automatically adjusting the posture is started.
  • the control circuit 30 determines the posture of the concave mirror 26 so that the ideal posture associated with the relative position is obtained based on the relative position of the occupant's eye 7 taken by the in-vehicle camera 6a with respect to the visual recognition region 12. Adjust automatically.
  • the automatic adjustment means that the control circuit 30 changes the posture of the concave mirror 26 based on a signal or the like input from the vehicle camera 6a or the like.
  • the in-vehicle camera 6a constitutes an “imaging unit”
  • the control circuit 30 that executes step S50 constitutes an “adjustment unit”
  • the control circuit 30 that executes step S30 is a “determination unit”.
  • the control circuit 30 that executes step S32 constitutes a “warning unit”.
  • the optical system 20 moves the visual recognition area 12 of the image according to the posture of the concave mirror 26. According to this, it is possible to display the virtual image 10 according to the position PE of the occupant's eye 7 by moving the visual recognition area 12 by changing the posture of the concave mirror 26. Then, the posture of the concave mirror 26 is automatically adjusted based on the relative position of the photographed occupant's eye 7 with respect to the visual recognition area 12 so as to be the posture associated with the relative position. According to this, the position PE of the occupant's eye 7 is actually photographed and the posture of the concave mirror 26 is automatically adjusted, so that the display conforming to the position PE of the occupant's eye 7 is not required to perform complicated adjustment work.
  • the HUD device 100 that can automatically adjust the position can be provided.
  • the control circuit 30 determines that the position PE of the occupant's eye 7 is within the movable region in the z direction, the control circuit 30 changes the posture of the concave mirror by rotational driving around the first axis 26c. Adjust automatically. According to this, even when the position PE of the occupant's eye 7 is outside the visual recognition area 12 in the z direction, the display position can be automatically adjusted to the position PE of the occupant's eye 7.
  • the control circuit 30 when the control circuit 30 determines that the position PE of the occupant's eye 7 is out of the movable region 14 in the z direction, the control circuit 30 changes the height HS of the seat 5 on which the occupant is seated. So warn the occupant. According to this, since the height HS of the seat 5 is changed by the occupant and the position PE of the occupant's eye 7 is prompted to enter the movable region 14 in the z direction, the HUD device 100 is out of order. An occupant can recognize that the virtual image 10 is not invisible.
  • the control circuit 30 starts the automatic adjustment of the attitude of the concave mirror 26 when the occupant changes the height HS of the seat 5. According to this, the occupant can automatically adjust the position PE of the occupant's eye 7 within the movable region by changing the height HS of the seat 5.
  • the second embodiment is a modification of the first embodiment.
  • the second embodiment will be described with a focus on differences from the first embodiment.
  • the concave mirror 226 of the HUD device 200 of the second embodiment is the same as the first embodiment in the shape of the reflection surface 26a. However, as shown in FIG. 8, the concave mirror 226 is disposed so as to pass through the center of the concave mirror 226, intersects the first axis 26c at the center of the concave mirror 226 in addition to the first axis 26c, and is perpendicular to the first axis 26c.
  • a second shaft 226d is provided.
  • the concave mirror 226 is driven to rotate around the first axis by a stepping motor 26b in accordance with a drive signal from a control circuit 30 described later. Further, the concave mirror 226 is driven to rotate around the second shaft 226d by another stepping motor 226e. That is, the concave mirror 226 is an optical member that can be changed in posture.
  • the change of the posture of the concave mirror 226 is the same as that of the first embodiment depending on the rotational drive around the first axis 26c. On the other hand, even if the posture of the concave mirror 226 is changed by the rotational drive around the second shaft 226d, the visual recognition area 12 moves according to the posture of the concave mirror 226.
  • the visual recognition area 12 moves in the y direction and in the left-right direction with respect to the vehicle 1. That is, the optical system 20 moves the visual recognition area 12 in the y direction by changing the posture of the concave mirror 226 by rotating around the second axis 226d.
  • the display position of the virtual image 10 is the y direction and moves in the left-right direction with respect to the vehicle 1.
  • the second shaft 226d is used as an auxiliary shaft when the occupant cannot sufficiently view the light of the image as the virtual image 10 only by the rotational drive around the first shaft 26c.
  • the concave mirror 226 corresponding to the position of the visual recognition area 12 where the difference in magnification of the virtual image 10 is minimized between the left and right sides of the center of the virtual image 10
  • the posture is the initial posture.
  • the movable region 214 in the second embodiment is defined as a range in which the visual recognition region 12 moves in the z direction according to the posture of the concave mirror 26 by the optical system 20 as in the first embodiment.
  • the range in which z moves in the z direction is defined as a movable region 214.
  • the visual recognition area 12 is shifted in the y direction from the movable area in accordance with the rotational driving around the second axis 226d, but the range in which the visual recognition area 12 moves in the y direction from the movable area 214 is referred to as the expansion area 216.
  • the first shaft 26c in a state along the y direction, and the visual recognition region 12 is located in the middle of the expansion region 216 in the y direction.
  • the visual recognition area 12 corresponding to the initial posture is indicated by a solid line
  • the movable area 214 including the visual recognition area 12 corresponding to the initial posture is also indicated by a solid line
  • the extended area 216 is indicated by a broken line.
  • releasing the parking state of the vehicle 1 means releasing both the parking brake and the parking range of the shift lever.
  • Steps S210 to S220 perform the same processing as steps S10 to S20 of the first embodiment. After the process of step S220, the process proceeds to step S235.
  • Step S230 performs the same determination as Step S30 of the first embodiment. If a positive determination is made in step S230, the process proceeds to step S236. If a negative determination is made in step S230, the process proceeds to step S232. Steps S232 and S234 perform the same processing as steps S32 and S34 of the first embodiment.
  • step S236 when it is determined in step S230 that the position PE of the occupant's eye 7 is within the movable region 214 in the z direction, whether or not the position PE of the eye 7 is within the movable region 214 in the y direction. Determine whether. Specifically, a memory (not shown) of the control circuit 30 stores a range in the y direction of the movable region 214 in advance, and the position PE of the eye 7 calculated in step S220 is within the range in the y direction. It is determined whether or not. In particular, in this embodiment, a negative determination is made if both eyes 7 are not within the range, but an affirmative determination may be made if one eye 7 is within the range. If a positive determination is made in step S236, the process proceeds to step S237. On the other hand, if a negative determination is made in step S236, the process proceeds to step S244.
  • step S237 it is determined whether or not the viewing area 12 is within the movable area 214. Specifically, if the concave mirror 226 is in the initial posture, the visual recognition region 12 is in the movable region 214, and thus an affirmative determination is made. On the other hand, if the current second shaft 226d is rotating with respect to the second shaft 226d in the initial posture, the viewing area 12 is shifted from the movable area 214 in the y direction. Judgment will be made. If an affirmation judging is made at Step S237, it will move to Step S240. On the other hand, if a negative determination is made in step S237, the process proceeds to step S242.
  • step S240 when it is determined that the position PE of the eye 7 is in the movable region 214 in the y direction and the z direction and the visual recognition region 12 is in the movable region 214 in the y direction, the position around the first axis 26c is determined.
  • the ideal posture of the concave mirror 226 is calculated by rotational driving. Specifically, the ideal posture of the concave mirror 226 associated with the position PE of the eye 7 calculated in step S220 on the premise that the rotational drive around the second axis 226d is stopped and the initial posture is maintained. Is calculated.
  • step S240 a rotation driving amount of the first shaft 26c is calculated so that the concave mirror 226 assumes an ideal posture.
  • step S250 the posture of the concave mirror 226 is adjusted by rotational driving around the first shaft 26c. Based on the rotation driving amount of the first shaft 26c calculated in step S240, the stepping motor 26b to which the drive signal is input rotates the concave mirror 226 around the first shaft 26c, and the posture is changed. . A series of processing is complete
  • step S242 when it is determined that the position PE of the eye 7 is within the movable region 214 in the y direction and the z direction and the visual recognition region 12 is displaced from the movable region 214 in the y direction, the first axis
  • the ideal posture of the concave mirror 226 is calculated by rotational driving around 26c and rotational driving around the second axis 226d. Specifically, the ideal posture of the concave mirror 226 associated with the position PE of the eye 7 calculated in step S220 is calculated on the assumption that the posture of the concave mirror 226 is the initial posture.
  • step S242 based on the relative position of the eye 7 with respect to the current visual recognition area 12 calculated in step S220, the rotational drive amount of the first shaft 26c and the second shaft 226d so that the concave mirror 226 assumes an ideal posture is calculated. To do. After the process of step S242, the process proceeds to step S252.
  • step S252 the posture of the concave mirror 226 is adjusted by rotational driving around the first axis 26c and rotational driving around the second axis 226d.
  • the stepping motors 26b and 226e to which the drive signals are input based on the rotational drive amounts of the first shaft 26c and the second shaft 226d calculated in step S240 cause the concave mirror 226 to move around the first shaft 26c and the second shaft.
  • the posture is changed by rotating around 226d. That is, the visual recognition area 12 is moved into the movable area 214 by step S252. A series of processing is complete
  • step S244 when it is determined in step S230 that the position PE of the occupant's eye 7 is out of the movable region 214 in the y direction, the rotation drive around the first axis 26c and the rotation around the second axis 226d are performed.
  • the ideal posture of the concave mirror 226 is calculated by rotational driving. Specifically, the concave mirror associated with the position PE of the eye 7 calculated in step S220 on the premise that both the rotational driving around the first axis 26c and the rotational driving around the second axis 226d are performed. 226 ideal posture is calculated.
  • step S244 based on the relative position of the eye 7 with respect to the current visual recognition area 12 calculated in step S220, the rotational drive amount of the first shaft 26c and the second shaft 226d so that the concave mirror 226 assumes an ideal posture is calculated. To do. After the process of step S244, the process proceeds to step S254.
  • step S254 the posture of the concave mirror 226 is adjusted by rotational driving around the first axis 26c and rotational driving around the second axis 226d.
  • the stepping motors 26b and 226e to which the drive signals are input based on the rotational drive amounts of the first shaft 26c and the second shaft 226d calculated in step S240 cause the concave mirror 226 to move around the first shaft 26c and the second shaft.
  • the posture is changed by rotating around 226d. That is, by step S254, the viewing area 12 is shifted from the movable area 214 in the y direction. A series of processing is complete
  • the ideal posture in the second embodiment the same concept as in the first embodiment is applied to the rotational drive of the first shaft 26c.
  • the position PE of the eye 7 calculated in step S220 with respect to the initial posture is used as a reference around the minimum second shaft 226d for being in the visual recognition region 12.
  • the posture by the rotation drive is an ideal posture.
  • control circuit 30 determines the attitude of the concave mirror 226 so that the attitude associated with the relative position is based on the relative position of the occupant's eye 7 taken by the in-vehicle camera 6a with respect to the visual recognition area 12. Adjust automatically. Therefore, also according to the second embodiment, it is possible to achieve the operational effects according to the first embodiment.
  • the virtual image 10 displayed with a width in the left-right direction that is the y-direction has a difference in distortion between the left and right sides of the center of the virtual image 10 by the rotational drive around the second axis 226d of the concave mirror 226. May occur. Therefore, when it is determined that the photographed position PE of the occupant's eye 7 is within the movable region 214 in the y direction and the z direction, and the visual recognition region 12 is within the movable region 214 in the y direction, the second axis The rotation drive around 226d is stopped, and the attitude of the concave mirror 226 is automatically adjusted by the rotation drive around the first shaft 26c. According to this, it is possible to automatically adjust the virtual image 10 while suppressing the difference between the left and right distortions.
  • the posture of the concave mirror 226 is automatically adjusted by the rotational drive around the first axis 26c and the rotational drive around the second axis 226d. According to this, it is possible to automatically adjust the virtual image 10 while suppressing the difference between the left and right distortions.
  • the rotation drive around the first axis 26c and the second axis The posture of the concave mirror 226 is automatically adjusted by rotational driving around 226d. According to this, it is possible to display the virtual image 10 in a visually recognizable manner for an occupant who is out of the visual recognition area 12 in the y direction.
  • the second embodiment when the parking state of the vehicle 1 is released, an operation for automatically adjusting the posture of the concave mirror 226 is started. According to this, since the posture of the concave mirror 226 can be automatically adjusted while the occupant is in the driving posture, the HUD that can be automatically adjusted to the display position according to the position PE of the occupant's eye 7 during driving. An apparatus 200 can be provided.
  • the in-vehicle camera 6a constitutes an “imaging unit”
  • the control circuit 30 that executes steps S250, S252, and S254 constitutes an “adjustment unit”, and executes steps S230, S236, and S237.
  • the control circuit 30 forms a “determination unit”
  • the control circuit 30 that executes step S232 forms a “warning unit”.
  • the third embodiment is a modification of the first embodiment.
  • the third embodiment will be described with a focus on differences from the first embodiment.
  • the control circuit 30 of the third embodiment is electrically connected to the manual adjustment switch 308 shown in FIG. 11 in addition to the block diagram of FIG.
  • the manual adjustment switch 308 is formed so as to be tiltable up and down.
  • the control circuit 30 permits the input of the manual adjustment switch 308, when the manual adjustment switch 308 is pushed upward, the posture of the concave mirror 26 is driven to rotate around the first axis 26c, and the virtual image 10
  • the display position is in the z direction and moves upward with respect to the vehicle 1.
  • the manual adjustment switch 308 is driven to rotate in the direction opposite to the previous direction, and the display position of the virtual image 10 is in the z direction and moves downward with respect to the vehicle 1. Yes.
  • the control circuit 30 is electrically connected to the brightness adjustment switch. When the brightness adjustment switch is operated in the manual adjustment mode, the brightness of the virtual image can be adjusted by manually adjusting the output of the light source of the projector.
  • Steps S310 to S330 perform the same control as steps S10 to S30 of the first embodiment. Further, when it is determined in step S330 that the position PE of the occupant's eye 7 is within the movable region 14 in the z direction, the same control as steps S40 to S50 of the first embodiment is performed. . After the process of step S350, that is, after automatically adjusting the posture of the concave mirror 26, the process proceeds to step S360.
  • step S360 a transition to the manual adjustment mode is performed. That is, when the control circuit 30 permits input of the manual adjustment switch 308, the occupant can manually adjust the posture of the concave mirror 26 by the manual adjustment switch 308. A series of processes are complete
  • step S330 when it is determined in step S330 that the position PE of the occupant's eye 7 is out of the movable region 14 in the z direction, the same control as in steps S32 to 34 of the first embodiment is performed in steps S332 to S334. Do. However, if a negative determination is made in step S334, the process proceeds to step S360.
  • control circuit 30 determines the posture of the concave mirror 26 so that the posture associated with the relative position is based on the relative position of the occupant's eye 7 taken by the in-vehicle camera 6a with respect to the visual recognition area 12. Adjust automatically. Therefore, also according to the third embodiment, it is possible to achieve the operational effects according to the first embodiment.
  • the occupant can manually adjust the posture of the concave mirror 26. According to this, even if the occupant is difficult to adjust from the state where the virtual image 10 is not visually recognized, the control circuit 30 of the HUD device 300 automatically adjusts the posture of the concave mirror 26 where the virtual image 10 is visible, and then suits the occupant's preference. It is possible to make manual adjustments such as fine adjustments to the appearance.
  • the in-vehicle camera 6a constitutes a “photographing unit”
  • the control circuit 30 that executes step S350 constitutes an “adjusting unit”
  • the control circuit 30 that executes step S330 is a “determination unit”.
  • the control circuit 30 that executes step S332 forms a “warning unit”.
  • the optical member provided so that the posture can be changed may be a plane mirror 24 other than the concave mirror 26, for example.
  • the ideal posture may be calculated based on another way of thinking. For example, regarding the rotational drive of the first shaft 26c, the minimum rotational drive around the first shaft 26c for the position PE of the eye 7 calculated in steps S20, S220, and S320 to be within the visual recognition region 12 is performed.
  • the posture of the concave mirror 26 may be an ideal posture.
  • steps S20, S30, S32, S34, S40, S220, S230, S232, S234, S236, S237, S240, S242, S320, S330, S332, S334, and S340 are included.
  • the meter 4 other than the control circuit 30 may perform the processing.
  • the warning in steps S32, S232, and S332 may be a warning message displayed on the navigation screen of the vehicle 1, or may be warned by voice.
  • a process corresponding to S360 may be added in which the posture of the concave mirror 226 can be manually adjusted by the occupant after the posture of the concave mirror 226 is automatically adjusted.
  • step S210 an operation for automatically adjusting the attitude of the concave mirror 226, that is, step S210 is started when the engine switch is turned on. Good.
  • the time point when at least one of the parking range of the parking brake and the shift lever is released may be set as the time point when the parking state is released.
  • the posture of the concave mirror 26 is automatically adjusted when the occupant presses the automatic adjustment button provided on the vehicle 1. For example, steps S10, S210, and S310 may be started.
  • the HUD device 100 may be applied to various moving bodies (transportation equipment) such as ships other than vehicles or airplanes.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
PCT/JP2015/001759 2014-05-26 2015-03-26 ヘッドアップディスプレイ装置 Ceased WO2015182026A1 (ja)

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US15/108,807 US20160320624A1 (en) 2014-05-26 2015-03-26 Head-up display device
DE112015002481.6T DE112015002481T5 (de) 2014-05-26 2015-03-26 Head-up-Display-Vorrichtung

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JP2014-108315 2014-05-26

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