WO2021010227A1 - ウィンドシールド表示装置 - Google Patents

ウィンドシールド表示装置 Download PDF

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Publication number
WO2021010227A1
WO2021010227A1 PCT/JP2020/026554 JP2020026554W WO2021010227A1 WO 2021010227 A1 WO2021010227 A1 WO 2021010227A1 JP 2020026554 W JP2020026554 W JP 2020026554W WO 2021010227 A1 WO2021010227 A1 WO 2021010227A1
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WO
WIPO (PCT)
Prior art keywords
windshield
projector
occupant
vehicle
display device
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/JP2020/026554
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English (en)
French (fr)
Japanese (ja)
Inventor
裕貴 小山
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
Publication of WO2021010227A1 publication Critical patent/WO2021010227A1/ja
Priority to US17/559,420 priority Critical patent/US20220113539A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B60K35/23—Head-up displays [HUD]
    • 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
    • B60K35/50—Instruments characterised by their means of attachment to or integration in the vehicle
    • 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
    • B60K35/60—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
    • B60K35/65—Instruments specially adapted for specific vehicle types or users, e.g. for left- or right-hand drive
    • B60K35/654—Instruments specially adapted for specific vehicle types or users, e.g. for left- or right-hand drive the user being the driver
    • 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
    • B60K35/65—Instruments specially adapted for specific vehicle types or users, e.g. for left- or right-hand drive
    • B60K35/656—Instruments specially adapted for specific vehicle types or users, e.g. for left- or right-hand drive the user being a passenger
    • 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
    • G02B27/0081—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for altering, e.g. enlarging, the entrance or exit pupil
    • 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
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/54—Accessories
    • G03B21/56—Projection 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
    • 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
    • B60K2360/33—Illumination features
    • B60K2360/334—Projection means
    • 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
    • B60K2360/77—Instrument locations other than the dashboard
    • B60K2360/785—Instrument locations other than the dashboard on or in relation to the windshield or windows
    • 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

Definitions

  • This disclosure relates to a windshield display device.
  • a head-up display device that projects image light onto a transparent plate-shaped member provided on a moving body such as an automobile so that an occupant can visually recognize an image by superimposing it on the scenery in front of the transparent plate-shaped member.
  • a head-up display device will be referred to as a "HUD device”.
  • the HUD device described in Patent Document 1 includes an image display unit, an illumination unit that illuminates the image display unit from the back side, a plane mirror that reflects light projected from the illumination unit via the image display unit, and a plane mirror. It is equipped with a concave mirror that reflects light and projects it onto the windshield.
  • This HUD device magnifies the image displayed on the image display unit with a concave mirror and projects it on the windshield, displays the magnified image as a virtual image in the space in front of the windshield, and displays the virtual image on the driver or the like. It is configured to be recognized by.
  • This HUD device is mounted in the dashboard and emits light from the dashboard toward the windshield. The light emitted from the HUD device is reflected by the windshield and then reaches the driver's eyebox.
  • the display area of the image to be visually recognized by the user is limited to a part of the windshield located in front of the user. If the HUD device is used to display an image in a predetermined or larger area of the windshield, which is wider than the conventional one, the light source and the concave mirror must be enlarged in order to widen the area for projecting the image light. The device itself becomes large.
  • an image is visually recognized by a driver or the like via a windshield, and the image can be visually recognized in a predetermined area or more of the windshield while suppressing an increase in the size of a light source.
  • the windshield display device Regarding the windshield display device.
  • the windshield display device is a windshield display device that allows an occupant to visually recognize an image through the windshield of a vehicle, and has a transparent screen arranged on the windshield and transparent.
  • a projector that projects image light onto a screen is provided, and the projector is arranged in an end adjacent portion of the vehicle interior adjacent to the end of the windshield in the vehicle width direction, and is a windshield vehicle.
  • the image light is projected over a predetermined area in the width direction, and the transparent screen transmits the outside light from the outside of the vehicle into the vehicle interior, and the image light is transmitted to the eye box of the first occupant sitting in the driver's seat of the vehicle.
  • it is configured to reflect on the eye box of the second occupant sitting in the passenger seat or both.
  • the windshield display device has a configuration in which image light is projected from a projector mounted on a transparent screen superposed on the windshield and adjacent to the end of the windshield in the vehicle width direction.
  • the transparent screen reflects the image light in the driver's seat and / or the passenger's seat so that the occupant sitting in the driver's seat and / or the occupant in the passenger seat can see the image. ing.
  • the projector By arranging the projector adjacent to the end of the vehicle, it is possible to project image light over a predetermined area of the transparent screen superimposed on the windshield, and it is possible to suppress the increase in size of the light source. Further, by adopting a transparent screen configuration that reflects the image light and allows the occupant to visually recognize the image, the occupant can visually recognize the image in a wider area than the conventional HUD device at the position of the windshield.
  • the windshield display device is capable of allowing the occupant to visually recognize the image in a wider range than the conventional HUD device among the windshields, while suppressing the increase in size of the light source.
  • FIG. 1 It is a top view which shows the structural example of the transparent screen in the windshield display device of FIG. It is a top view which shows the other configuration example of the transparent screen in the windshield display device of FIG. It is a top view which shows the arrangement example of the transparent screen in another embodiment. It is a top view which shows the other arrangement example of the transparent screen in another embodiment.
  • the windshield display device S1 of the first embodiment will be described with reference to FIGS. 1 to 4.
  • FIG. 1 the steering of the vehicle V and the like are omitted in order to make it easier to see the mounting locations of the projectors 1 and 2 described later.
  • FIG. 2 in order to make it easier to see and to assist understanding, the image light from the first projector 1 described later and its reflected light are shown by solid lines, and the image light from the second projector 2 described later and its reflected light are shown by a dashed line. Along with, arrows are attached to those directions.
  • the left-right direction of the paper surface indicated by the arrow in FIG. 1 is referred to as the "vehicle width direction" in the vehicle V.
  • the windshield display device S1 of the present embodiment is mounted on a vehicle V such as an automobile, projects light from projectors 1 and 2 toward the windshield V1, and passes through the windshield V1.
  • the configuration is such that the driver or the like can visually recognize various images.
  • visualizing an image through the windshield V1 means that the image light is projected onto the transparent screen 3 from the first projector 1 and / or the second projector 2 and the image light is reflected by the user. It means to visually recognize various images.
  • Projectors 1 and 2 are arbitrary light sources used for projecting image light onto the transparent screen 3 so that the user can visually recognize various images as real images at the position of the windshield V1.
  • the projectors 1 and 2 may be any projector such as a liquid crystal system, a DLP (registered trademark) system, or a laser light scanning system. DLP is an abbreviation for digital lighting processing.
  • the projectors 1 and 2 are connected to, for example, another vehicle-mounted device (not shown), and project the video light corresponding to the video signal based on the video signal corresponding to various images such as the display screen of the other vehicle-mounted device.
  • in-vehicle devices may be, for example, various other electronic devices such as a navigation device, an in-vehicle camera, and a car air conditioner, but are not limited thereto. Since this type of projector is known, detailed description thereof will be omitted in the present specification.
  • Projectors 1 and 2 are arranged at positions where image light can be projected on a predetermined area or more of the windshield V1. Specifically, the projectors 1 and 2 are arranged in the end adjacent portion V2, which is a part of the vehicle V adjacent to the end of the windshield V1 in the vehicle width direction.
  • the "region above a predetermined value of the windshield V1" refers to a region in which a virtual image is displayed by the conventional HUD device, that is, a region of the windshield V1 wider than a predetermined region located in front of the driver's seat. means. For example, as shown in FIG. 2, a wide range of the windshield V1 from a predetermined area located in front of the driver's seat of the vehicle V to a predetermined area located in front of the passenger seat of the vehicle V is wide. It corresponds to "a region equal to or larger than a predetermined area of the windshield V1".
  • end adjacent portion V2 for example, as shown in FIG. 1, a part of the dashboard including the end in the vehicle width direction and the like can be mentioned.
  • the end adjacent portion V2 is the region of the end portion of the dashboard in the vehicle direction as a typical example.
  • the occupant C1 seated in the driver's seat of the vehicle V will be referred to as the "first occupant C1", and the occupant C2 seated in the passenger seat of the vehicle V will be referred to as the "second occupant C2".
  • the eye box 4 of the first occupant C1 is referred to as a “first eye box 4"
  • the eye box 5 of the second occupant C2 is referred to as a "second eye box 5".
  • the direction from the driver's seat side to the passenger's seat side in the vehicle width direction of the vehicle V may be referred to as a "first direction”
  • the opposite direction may be referred to as a "second direction”.
  • the first projector 1 is mounted on a predetermined area of the end adjacent portion V2 of the vehicle V on the passenger seat side, that is, on the end on the first direction side of the dashboard.
  • the image light projected from the first projector 1 onto the transparent screen 3 is reflected in the first eye box 4, which is a rectangular area assumed as the position of the eyes of the first occupant C1 seated in the driver's seat of the vehicle V. It is visually recognized as various images in the driver's seat.
  • the first projector 1 is a projector for displaying an image on the first occupant C1 by projecting image light onto the transparent screen 3 from diagonally forward and allowing the first occupant C1 to visually recognize the image.
  • the second projector 2 is mounted in a predetermined area on the driver's seat side of the end adjacent portion V2 of the vehicle V, that is, at the end on the second direction side of the dashboard.
  • the image light projected from the second projector 2 onto the transparent screen 3 is reflected in the second eye box 5, which is a rectangular area assumed as the position of the eyes of the second occupant C2 seated in the passenger seat of the vehicle V. It is visually recognized as various images in the driver's seat. That is, the second projector 2 is a projector for displaying an image to the second occupant C2 by projecting the image light diagonally from the front onto the transparent screen 3 and causing the second occupant C1 to visually recognize the image.
  • the transparent screen 3 is superposed on a part or all of the windshield V1 via an arbitrary transparent adhesive such as PVB (polyvinyl butyral) resin. As shown in FIG. 2, for example, the transparent screen 3 reflects the image light projected from the first projector 1 on the first eye box 4, and the image light projected from the second projector 2 is reflected on the second eye box 5. It is configured to reflect.
  • PVB polyvinyl butyral
  • the transparent screen 3 may reflect only the light incident in a specific angle range at a specific reflection angle corresponding to the incident angle, and simply transmit or reflect the light incident at other angles. It is an optical member having a possible configuration.
  • the angle of the image light incident on the transparent screen 3 from the first projector 1 is defined as the incident angle ⁇ 1
  • the angle reflected toward the first occupant C1 is defined as the reflection angle ⁇ 2.
  • the incident angle ⁇ 1 is an angle formed by the normal line of the surface formed by the transparent screen 3 with respect to the surface at the point where the incident light is irradiated and the incident light.
  • the reflection angle ⁇ 2 is an angle formed by the normal line with respect to the surface at the point where the incident light incident at the incident angle ⁇ 1 is applied to the surface formed by the transparent screen 3 and the reflected light reflected from the incident light.
  • the reflection angles ⁇ 2 of the transparent screen 3 are 20 °, 35 °, 55 °, and 75 °, respectively. It is configured to reflect the incident light at a reflection angle ⁇ 2 according to the incident angle ⁇ 1.
  • the relationship between the incident angle ⁇ 1 and the reflection angle ⁇ 2 is appropriately changed depending on the arrangement of the image light projection ports of the projectors 1 and 2, the transparent screens 3 and the eyeboxes 4 and 5, the curvature of the windshield V1 and the like.
  • the incident angle ⁇ 1 in FIG. 4 is positive when the incident light is on the left side of the normal line, and the reflected light is on the paper surface of the normal line for the reflected angle ⁇ 2. This is the value when the case on the right side is positive. Therefore, the reflection angle ⁇ 2 can be a negative value in a part of the transparent screen 3. Specifically, for example, in the example of FIG. 3, when the image light from the first projector 1 is incident on the region on the right side of the paper surface of the transparent screen 3 in front of the first eye box 4. This is when the reflected light is incident on the first eye box 4.
  • the reflection angle ⁇ 2 is a negative value.
  • FIGS. 3 and 4 the case where the image light of the first projector 1 is reflected toward the first eye box 4 has been described as an example, but the image light from the second projector 2 is transferred to the second eye box 5.
  • the transparent screen 3 is designed based on the same idea when it is reflected toward the screen.
  • the transparent screen 3 is, for example, an optical film having a microlens array in which a plurality of microlenses having a convex elliptical hemisphere shape (not shown) are repeatedly arranged so as to be convex toward the passenger compartment side. As shown in FIG. 3, the transparent screen 3 reflects light incident from the vehicle interior side at a predetermined angle, while transmitting external light from the outside of the vehicle interior into the vehicle interior.
  • the transparent screen 3 reflects the image light from the first projector 1 to the first eye box 4 and the image light from the second projector 2 to the second eye box 5.
  • the transparent screen 3 functions as a screen for displaying a common real image of the projectors 1 and 2 in the present embodiment.
  • each microlens has, for example, a symmetrical shape and is arranged so that the symmetrical direction is along the vehicle width direction. Will be done.
  • the axis of symmetry overlaps with the axis of symmetry of the windshield V1 in the plane direction of the windshield V1 and in the direction orthogonal to the vehicle width direction. Arranged like this.
  • the transparent screen 3 has a distribution in which the optical characteristics of the incident angle ⁇ 1 and the reflection angle ⁇ 2 as shown in FIG. 4 are symmetrical in the vehicle width direction, and are projected from different positions as shown in FIG.
  • the structure is such that the image light can be reflected by different eye boxes 4 and 5.
  • the transparent screen 3 that reflects the image light incident from a predetermined angle to the first eye box 4 or the second eye box 5 while transmitting the outside light from the front of the windshield V1 is provided, and the field of view of the outside world is secured.
  • video display can be compatible.
  • a Lumisty (registered trademark) film manufactured by Sumitomo Chemical Co., Ltd. can be used.
  • the above is the basic configuration of the windshield display device S1 of the present embodiment. With such a configuration, the following effects can be obtained.
  • the projectors 1 and 2 By arranging the projectors 1 and 2 in the end adjacent portion V2 of the vehicle V adjacent to the end of the transparent screen 3 in the vehicle width direction, it is possible to project image light over a wider area than the conventional HUD device. It is possible to suppress the increase in size of the projectors 1 and 2. Further, by reflecting the image light projected on a wide area by the transparent screen 3 on the first eye box 4 or the second eye box 5, the occupants C1 and C2 can visually recognize the image in the windshield V1 in a wider range than before. it can.
  • the transparent screen 3 in which the reflection angle of the light incident in a specific angle range is adjusted, the reflectance with respect to the light incident from a predetermined angle is reflected when a commonly used transparent light diffusing plate is used. It will be higher than the rate.
  • the output of the light sources of the projectors 1 and 2 can be made lower than that in the case of using the normal transparent light diffusing plate, and the brightness of the image can be equal to or higher than that in the case of using the normal transparent light diffusing plate. Therefore, the windshield display device S1 has the effect of reducing the heat load of the projectors 1 and 2 while ensuring the brightness of the image.
  • the first occupant C1 and the second occupant C2 to visually recognize the image in a predetermined area or more of the windshield V1 while suppressing the increase in size of the light source for projecting the image light.
  • the windshield display device S2 of the second embodiment will be described with reference to FIG.
  • FIG. 5 similarly to FIG. 2, the image light from the first projector 1 and the reflected light thereof are shown by solid lines, and arrows are attached to their directions.
  • the windshield display device S2 of the present embodiment has only the first projector 1 as a projector for displaying a real image, and reflects the image light from the first projector 1 to the first eye box 4 of the first occupant C1. It differs from the first embodiment in that it is said to be. That is, the windshield display device S2 is configured so that only the first occupant C1 can visually recognize various images at the position of the windshield V1.
  • the windshield display device S2 capable of allowing the first occupant C1 to visually recognize the image in a predetermined area or more of the windshield V1 while suppressing the increase in size of the light source for projecting the image light. It becomes.
  • the windshield display device S3 of the third embodiment will be described with reference to FIG.
  • the image light from the second projector 2 and the reflected light thereof are shown by a alternate long and short dash line, and arrows are attached to their directions.
  • the windshield display device S3 of the present embodiment has only the second projector 2 as a projector for displaying a real image, and reflects the image light from the second projector 2 to the second eye box 5 of the second occupant C2. It differs from the first embodiment in that it is said to be. That is, the windshield display device S3 is configured to allow only the second occupant C2 to visually recognize various images at the position of the windshield V1.
  • the windshield display device S3 capable of allowing the second occupant C2 to visually recognize the image in a predetermined area or more of the windshield V1 while suppressing an increase in the size of the light source for projecting the image light. It becomes.
  • FIGS. 7 and 8 The windshield display device S4 of the fourth embodiment will be described with reference to FIGS. 7 and 8.
  • FIG. 7 similarly to FIG. 2, the image light from the second projector 2 and the reflected light thereof toward the second eye box 5 are shown by a alternate long and short dash line, and the first eye box of the reflected light of the image light is shown.
  • Those heading for 4 are shown by solid lines, and arrows are attached to those directions.
  • the windshield display device S4 of the present embodiment has only the second projector 2 as a projector for displaying a real image.
  • the transparent screen 3 has a first reflecting unit 3a that reflects the image light from the second projector 2 to the first eye box 4, and the second eye. It has a second reflecting portion 3b that reflects on the box 5.
  • the windshield display device S4 differs from the first embodiment in these respects. In this embodiment, this difference will be mainly described.
  • the transparent screen 3 is arranged so as to be overlapped over the entire area of the windshield V1, and a part of the transparent screen 3 is a first reflecting portion 3a for presenting an image to the first occupant C1. Further, in the transparent screen 3, a portion different from the first reflecting portion 3a is a second reflecting portion 3b for presenting an image to the second occupant C2. That is, the transparent screen 3 is a single optical film having a first reflecting portion 3a and a second reflecting portion 3b, and in the present embodiment, the first occupant C1 and the second occupant are generated by the image light of the second projector 2. All of C2 are configured so that the image can be visually recognized.
  • the first reflecting portion 3a is surrounded by the second reflecting portion 3b, and its area is smaller than that of the second reflecting portion 3b.
  • the arrangement, area, and the like of the first reflecting portion 3a and the second reflecting portion 3b may be appropriately changed.
  • the present embodiment it is possible to suppress an increase in the size of the light source for projecting the image light, and while the second occupant C2 is made to visually recognize the image in the region equal to or larger than the predetermined area of the windshield V1, the first occupant C1 is also allowed to see the image.
  • This is a windshield display device S4 capable of visually recognizing. Further, in the present embodiment, it is possible for the first occupant C1 and the second occupant C2 to visually recognize different images by one projector.
  • the first reflecting portion 3a may have a larger area than the second reflecting portion 3b and may be arranged so as to surround the second reflecting portion 3b.
  • the transparent screen 3 is arranged in the entire area of the windshield V1
  • the present invention is not limited to this.
  • the transparent screen 3 may be arranged only in the lower half region of the windshield V1.
  • the image is not displayed in the area of the windshield V1 where the transparent screen 3 is not arranged, and the field of view of the outside world can be further secured. It is a windshield display device with a configuration.
  • the transparent screen 3 is preferably arranged along the direction connecting both ends in the vehicle width direction of the windshield V1, may be arranged only in the upper half of the windshield V1, or is arranged under the windshield V1. It may be arranged only within a predetermined range on the side. In this way, the transparent screen 3 can be arranged in any region of a part of the windshield V1.
  • the transparent screen 3 may be composed of two optical films, a first screen 31 and a second screen 32, as shown in FIG. 11, for example.
  • the first screen 31 reflects, for example, the image light from the first projector 1 to the first eye box 4.
  • the second screen 32 reflects, for example, the image light from the second projector 2 to the second eye box 5.
  • the transparent screen 3 may be composed of a portion corresponding to the first projector 1 and a portion corresponding to the second projector 2.
  • the shape and arrangement of the microlens arrays can be different between the first screen 31 and the second screen 32, and the relationship between the incident angle ⁇ 1 and the reflection angle ⁇ 2 of light, that is, the optical characteristics of the transparent screen 3
  • the degree of freedom can be improved.
  • the arrangement of the screens 31 and 32 may be reversed.
  • the projectors 1 and 2 have a predetermined area or more with respect to the windshield V1. It is not limited to the dashboard as long as it is a place where image light can be projected.
  • the end adjacent portion V2 may be, for example, a pillar adjacent to the end of the windshield V1 in the vehicle width direction of the vehicle V, that is, a so-called A pillar. In this case, the projectors 1 and 2 can project the image light over the entire area of the windshield V1.
  • the transparent screen 3 is arranged on the outer surface of the windshield V1 on the passenger compartment side of the vehicle V, but the image light is emitted from the eyeboxes 4 and 5.
  • the arrangement is not limited to this arrangement as long as it can reflect on one or both.
  • the transparent screen 3 may be arranged between the two glass substrates constituting the windshield V1 via a PVB resin or the like. That is, the term "transparent screen 3 is arranged so as to overlap the windshield V1" in the present specification includes not only the transparent screen 3 being arranged on the outer surface of the windshield V1 but also being arranged inside. ..

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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)
  • Projection Apparatus (AREA)
PCT/JP2020/026554 2019-07-18 2020-07-07 ウィンドシールド表示装置 Ceased WO2021010227A1 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/559,420 US20220113539A1 (en) 2019-07-18 2021-12-22 Windshield display device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-133113 2019-07-18
JP2019133113A JP7059986B2 (ja) 2019-07-18 2019-07-18 ウィンドシールド表示装置

Related Child Applications (1)

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US17/559,420 Continuation US20220113539A1 (en) 2019-07-18 2021-12-22 Windshield display device

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WO2021010227A1 true WO2021010227A1 (ja) 2021-01-21

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JP7534181B2 (ja) * 2020-10-13 2024-08-14 株式会社Subaru 車両の表示装置
US12472815B2 (en) * 2023-07-12 2025-11-18 Infineon Technologies Austria Ag Driver and passenger aware content projection
US20260084529A1 (en) * 2024-09-25 2026-03-26 GM Global Technology Operations LLC Detecting and mitigating vehicle instrument cluster display obstructions

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014203534A1 (ja) * 2013-06-20 2014-12-24 株式会社デンソー ヘッドアップディスプレイ装置、およびヘッドアップディスプレイ装置に用いられる照明装置
JP2016101805A (ja) * 2014-11-27 2016-06-02 パイオニア株式会社 表示装置、制御方法、プログラム、及び記憶媒体
US20180172993A1 (en) * 2016-12-20 2018-06-21 Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America Side view safety display in a motor vehicle

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Publication number Priority date Publication date Assignee Title
EP0946893B1 (de) * 1996-12-20 2002-04-17 Siemens Aktiengesellschaft Informationsanzeigesystem für mindestens eine person
JP6244500B2 (ja) * 2015-08-26 2017-12-06 富士フイルム株式会社 投写型表示装置、投写表示方法、及び投写表示プログラム
JP7117066B2 (ja) * 2019-02-15 2022-08-12 マクセル株式会社 車両情報表示装置および車両用情報表示システム

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2014203534A1 (ja) * 2013-06-20 2014-12-24 株式会社デンソー ヘッドアップディスプレイ装置、およびヘッドアップディスプレイ装置に用いられる照明装置
JP2016101805A (ja) * 2014-11-27 2016-06-02 パイオニア株式会社 表示装置、制御方法、プログラム、及び記憶媒体
US20180172993A1 (en) * 2016-12-20 2018-06-21 Panasonic Automotive Systems Company Of America, Division Of Panasonic Corporation Of North America Side view safety display in a motor vehicle

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