WO2019130447A1 - Dispositif d'affichage pour véhicules - Google Patents

Dispositif d'affichage pour véhicules Download PDF

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Publication number
WO2019130447A1
WO2019130447A1 PCT/JP2017/046779 JP2017046779W WO2019130447A1 WO 2019130447 A1 WO2019130447 A1 WO 2019130447A1 JP 2017046779 W JP2017046779 W JP 2017046779W WO 2019130447 A1 WO2019130447 A1 WO 2019130447A1
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WO
WIPO (PCT)
Prior art keywords
vehicle
light
display device
image
light source
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Application number
PCT/JP2017/046779
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English (en)
Japanese (ja)
Inventor
柴山　恭之
平田　浩二
Original Assignee
マクセル株式会社
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.)
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Publication date
Application filed by マクセル株式会社 filed Critical マクセル株式会社
Priority to PCT/JP2017/046779 priority Critical patent/WO2019130447A1/fr
Priority to JP2019561448A priority patent/JP6987343B2/ja
Publication of WO2019130447A1 publication Critical patent/WO2019130447A1/fr

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    • 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

Definitions

  • the present invention relates to a display device for a vehicle.
  • the vehicle display device described in Patent Document 1 includes a scanning projector in a vehicle compartment, and operates the projector to change an area in which an image is displayed according to the driver's gaze direction.
  • the vehicle display device described in Patent Document 1 is disposed on a rail as described in paragraph [0046] of Patent Document 1 in order to display an image in any of a plurality of regions in a vehicle cabin.
  • a display drive means for displacing the position of the projector as described above is essential, or as described in the same paragraph, a drive system for moving the lens by an actuator for lens drive is essential. For this reason, since it is necessary to mechanically displace the projector main body or the lens, there is a problem that time response is slow and it is not possible to switch the projection image to a desired position instantaneously.
  • the drive system since the drive system has to electrically control the drive motors, it is disadvantageous in achieving energy saving, reduction in size and weight, space saving, and securing of electromagnetic resistance.
  • the present invention has been made in view of the above problems, and improves time response, realizes energy saving, size reduction, space saving of the device, secures safety and electromagnetic resistance, and improves the vehicle interior. It is an object of the present invention to provide a display device for a vehicle capable of displaying an image on the display.
  • the present invention comprises the configuration described in the claims.
  • the vehicle display device according to the present invention is provided in the vehicle compartment of the vehicle, and projects the light emitted from the light source device onto the non-transmissive member of the vehicle compartment to display an image.
  • a display device for a vehicle wherein the display device for a vehicle reflects and deflects light emitted from the light source device and emitted light from the light source device, and projects the light toward the vehicle compartment on a non-transmissive member in the vehicle interior.
  • the image forming apparatus includes: an image forming apparatus that forms an image in a projection area to which the emitted light is irradiated; and a main control apparatus that controls the operation of the light source device and the image forming apparatus.
  • Light scanning that reflects and deflects the emitted light in a first direction and a second direction orthogonal to the first direction, and includes a reflecting surface that reflects the light, and a reflecting surface drive unit that moves the reflecting surface back and forth.
  • a magnifying optical system for magnifying the deflection angle of light wherein the magnifying optical system is such that the deflection angle of the light emitted from the magnifying optical system is three times the deflection angle of the light reflected and deflected by the reflecting surface. It is characterized in that it is a wide-angle projection system including an optical element which is enlarged as described above.
  • a vehicle capable of improving time responsiveness, realizing energy saving, downsizing, space saving of the device, securing safety and electromagnetic resistance, and displaying an image in a vehicle interior
  • a display device can be provided.
  • FIG. 1 is a schematic view (plan view) in which a compartment of a vehicle 110 is viewed from the ceiling side.
  • FIG. 2 is a view for explaining a specific example of the projection area.
  • the vehicle display device 51 projects emitted light toward a non-transmissive member in the vehicle compartment, for example, various pillars and dashboards by one image forming apparatus 1, and the non-transmissive member It is an apparatus which displays an image on this projection area
  • a steering wheel 100, a driver's seat 101, a passenger's seat 102, and a rearview mirror 103 are provided in a cabin of the vehicle 110.
  • a right side mirror 104R is provided on the right side of the vehicle, and a left side mirror 104L is provided on the left side.
  • the projection area is the right front pillar 3 beside the right side mirror 104R, the left front pillar 2 beside the left side mirror 104L, the dashboard 4, the right side pillar 5, the left side pillar 6, the right rear pillar 7, the left rear pillar 8 , And the rear seat 9 on a non-transmissive member which does not transmit light in the vehicle compartment.
  • the area to be projected may be formed by irradiating the non-transmissive member directly with light, or may be formed by sticking a sheet-like screen to the non-transmissive member.
  • a semi-transparent area may be provided on a part of the front glass, the door glass, and the rear glass to form a screen, or a screen separately provided in a vehicle compartment may be set as a projection area.
  • a right front projection region 73 is formed on the right front pillar 3
  • a left front projection region 72 is formed on the left front pillar 2
  • a center front projection region 74 is formed on the dashboard 4.
  • the display apparatus 51 for vehicles is provided with the 1st camera 53 which is an imaging device of in-vehicle exterior information.
  • the first camera 53 includes a front camera 53F that captures a front image of the vehicle 110, and a rear camera 53R that captures a rear image of the vehicle 110.
  • the front camera 53F may be provided at a position at which a front image can be captured through the windshield, for example, at a connecting portion between the ceiling of the vehicle 110 and the windshield and at the center of the left and right width of the windshield.
  • the rear camera 53R is provided at a position where a rear image of the vehicle 110 can be captured, for example, in a cabin or on the back of the vehicle 110.
  • the vehicle display device 51 further includes a second camera 54 which is a device for capturing a projection image.
  • the second camera 54 may be a wide-angle camera capable of capturing an image of the entire circumferential direction of the passenger compartment, or a plurality of cameras may be combined to image the omnidirectional direction of the passenger compartment.
  • the second camera 54 may be provided in the vicinity of the center of the ceiling of the passenger compartment, in the vicinity of the portion to which the image forming apparatus 1 is attached.
  • the display device 51 for vehicle includes a third camera 55 which is a device for acquiring a face image of the driver.
  • the third camera 55 is a position at which the movement of the eyes of the driver who got on the driver's seat 101 can be imaged, for example, a connecting portion between the ceiling of the vehicle 110 and the windshield and provided on the right side of the center of the windshield. Good.
  • FIG. 3A is a view of a vehicle provided with the image forming apparatus 1 of the display device for a vehicle 51 as viewed from the rear
  • FIG. 3B is a view of the vehicle as viewed from the right side
  • 4 is an enlarged view of the attachment portion of the image forming apparatus 1 in FIG. 3B.
  • the image forming apparatus 1 is fixed to the ceiling surface of the vehicle interior, but a recess for installing the image forming apparatus 1 may be provided on the ceiling and may be installed there.
  • the image forming apparatus 1 is installed near the center of the ceiling in the vehicle compartment, and the light scanning unit 11 and the magnifying optical system 21 (both not shown in FIG.
  • the light reflected and deflected by the light scanning unit 11 is broadened by the magnifying optical system 21 to expand it into a hemispherical area, and the vehicle interior is scanned and modulated to modulate the image forming apparatus 1 itself or the magnifying optical system 21.
  • the image is displayed on a single or a plurality of projected areas without displacing the optical elements that make up the image.
  • “reflection deflection” refers to changing the traveling direction of a light beam by interposing a reflecting surface in the traveling direction of the light beam.
  • FIG. 5A is a block diagram of the entire configuration of the display device 51 for a vehicle.
  • FIG. 5B is a view showing a configuration example of projection area data.
  • the display device 51 for vehicle includes an imaging device 52, a visual axis detection device 56, a main control device 57, an information device 62, a light source device 63, a projection area switching switch 64, the image forming device 1, and the communication I / F 68. Ru.
  • the imaging device 52 includes a first camera 53 (in-vehicle image pickup device), a second camera 54 (projected image pickup device), and a third camera 55 (face image pickup device).
  • the first camera 53 is an apparatus for capturing an external image obtained by capturing the inside and outside of the vehicle.
  • the peripheral situation of the vehicle 110 including the area where the driver's blind spot is included is acquired, and the acquired image is output to the main control device 57.
  • the main controller 57 projects and displays the acquired image itself or video information for supporting safe driving of the vehicle based on the acquired image.
  • the main control unit 57 may extract the left end area image and the right end area image from the front image captured by the front camera 53F, and project the left end area image to the left front projection area 72 and the right end area image to the right front projection area 73 . Thereby, the image of the area which becomes the dead angle of the left front pillar 2 and the right front pillar 3 when viewed from the driver is displayed on each of the left front projection area 72 and the right front projection area 73. Can be presented to the driver.
  • the main control device 57 may project a rear image captured by the rear camera 53R onto the rear seat 9 to perform driving assistance when the vehicle 110 travels backward.
  • the main controller 57 is connected to a vehicle network (CAN: Control Area Network) 80, and data output from the various sensors 84 is acquired via an Engine Control Unit (ECU) 82 mounted on the vehicle 110. You may configure it.
  • This data may include traveling direction information of the vehicle 110 (for example, an operation position of a gear lever). Then, the main control device 57 may be configured to determine the traveling direction based on the acquired data, and to project the rear image on the rear seat 9 only when moving backward.
  • the second camera 54 is an apparatus for capturing a projection image projected on the projection area.
  • a distortion correction unit 61 of the main controller 57 in the subsequent stage generates a signal whose distortion is corrected, and the signal is used to drive the light source device 63 and the image forming apparatus 1 to generate distortion. An absent image is formed.
  • the third camera 55 is a device for capturing a face image of the driver
  • the gaze detection device 56 detects which direction the driver is looking at based on the captured face image, and is arranged in the driver's gaze direction
  • the projection image is displayed on the projected area.
  • the projection image is an amusement video information such as a television or DVD from the information device 62, a video outside the car acquired by the first camera 53, a video for supporting safe driving based on video information outside the car, a traffic situation display video and the like.
  • the main controller 57 controls the modulation signal of the projection image
  • the light amount control unit 59 controls the light amount of the light emitted from the light source device 63
  • the scan drive control controls the light scanning unit 11 described later.
  • a projection area data storage unit 67 for storing area data (see FIG. 5B).
  • the main control device 57 drives the light source device 63 and the image forming device 1 based on signals from the imaging device 52 and the information device 62 to form an image in a projected area in the vehicle interior.
  • the information device 62 is an information device having information such as an amusement video such as a television and a DVD and a map.
  • the projection area changeover switch 64 receives an operation from the driver or the passenger for specifying what kind of image is to be displayed in which projection area in the vehicle compartment.
  • the projection area changeover switch 64 is configured using a direction key or a touch panel.
  • FIG. 16 is a diagram showing an example of the configuration of the light source device 63. As shown in FIG.
  • the light source device 63 includes a laser light source 933R that generates R (red) light, a laser light source 933G that generates G (green) light, and a laser light source 933B that generates B (blue) light.
  • the bundle of rays 934R, 934B, 934B emitted from the light source is shaped by the lenses 935R, 935G, 935B into a bundle of substantially parallel rays 936R, 936G, 936B.
  • the distance between each of the laser light sources 933R, 933G, and 933B and the lenses 935R, 935G, and 935B is finely adjusted so that the difference in the focusing state of each laser beam on the projection area is reduced.
  • 937 is a mirror
  • 938 is a color combining element having a characteristic of transmitting red light and reflecting green light
  • 939 is a color combining element having a characteristic of transmitting red light and green light and reflecting blue light.
  • the light beam bundles 936R, 936G, 936B are coaxially combined into a light beam bundle 940 and emitted from the light source device 63.
  • the color combining elements 938 and 939 are formed of, for example, a combination of a prism and a dichroic mirror.
  • the size of the light flux 940 is set to ⁇ 1 to ⁇ 3.
  • the laser light source 933R is configured of, for example, a semiconductor laser that generates light of wavelength 630 nm.
  • the laser light source 933G is formed of, for example, a semiconductor-pumped solid-state laser that generates light of a wavelength of 532 nm using second harmonic generation.
  • the laser light source 933 B is configured of, for example, a semiconductor laser that generates light of wavelength 445 nm.
  • Each laser light source may be modulated by changing the injection current to the laser chip and the injection current to the excitation laser chip, or may be modulated using an external light modulator separately from the laser light source.
  • the external light modulator includes an acousto-optic modulator, an electro-optic modulator, and the like.
  • You may comprise the light source device 63 using one or more light sources each. Absent. A brighter projected image can be formed by increasing the number of light sources to be synthesized.
  • the light beam 940 emitted from the light source device 63 travels to the condenser lens 106.
  • a mirror may be disposed between the light source device 63 and the condenser lens 106 to fold the optical path to make the optical system compact. Further, an optical element may be added to shape the beam shape.
  • the image forming apparatus 1 is an apparatus for forming an image to be displayed in a vehicle compartment using a laser beam emitted from a light source device 63, and includes a light scanning unit 11 for scanning the laser beam and a lens unit for enlarging and projecting the laser beam. And a magnifying optical system 21.
  • the light scanning unit 11 includes a mirror 12 and a mirror driving unit 12a, the details of which will be described later.
  • FIG. 6 is a hardware configuration diagram of the entire vehicle display device according to the present embodiment.
  • the visual axis detection device 56 and the main control device 57 of the display device 51 for vehicle use the same hardware and execute the software for realizing the respective functions of the visual axis detection device 56 and the main control device 57 by hardware.
  • It consists of
  • the line-of-sight detection device 56 and the main control device 57 include a central processing unit (CPU) 301, a random access memory (RAM) 302, a read only memory (ROM) 303, a hard disk drive (HDD) 304, an input I / F 305, and an output. It includes an I / F 306, which are connected to one another via a bus 307.
  • CPU central processing unit
  • RAM random access memory
  • ROM read only memory
  • HDD hard disk drive
  • the first camera 53, the second camera 54, the third camera 55, the information device 62, and the projection area changeover switch 64 are connected to the input I / F 305, and data and signals from each member are detected by the visual axis detection device 56 It is input to the main controller 57.
  • the light source device 63 and the image forming apparatus 1 are connected to the output I / F 306.
  • the main control device 57 outputs control signals to each of the light source device 63 and the image forming device 1 to control the operation of the light source device 63 and the image forming device 1.
  • the hardware configuration of the vehicle display device 51 is not limited to the above, and may be a combination of a control circuit and a storage device.
  • FIG. 7 is a view for explaining the structure of the light scanning unit 11 (an enlarged view of the light scanning unit 11).
  • the light scanning unit 11 includes a mirror 12 for emitting light (laser light) emitted from the light source device 63, a first torsion spring 13 connected to the mirror 12, and a first holding member 14 connected to the first torsion spring 13. It comprises a second torsion spring 15 connected to the first holding member 14, a second holding member 16 connected to the second torsion spring 15, a permanent magnet and a coil.
  • the permanent magnets and coils are not shown in FIG. 7 for the sake of simplicity.
  • the size of the mirror 12 is 1 to 1.5 mm.
  • the coil of the light scanning unit 11 is formed substantially parallel to the mirror 12, and when the mirror 12 is in a stationary state, a magnetic field substantially parallel to the mirror 12 is generated.
  • Lorentz force substantially perpendicular to the mirror 12 is generated according to Fleming's left-hand rule.
  • the mirror 12 pivots to a position where the Lorentz force and the restoring force of the first torsion spring 13 and the second torsion spring 15 are balanced.
  • the mirror 12 By supplying an alternating current to the coil at a resonance frequency of the mirror 12, the mirror 12 performs a resonance operation and rotates about the first torsion spring 13 as a rotation axis ( ⁇ rotation).
  • the mirror 12, the first torsion spring 13 and the first holding member 14 perform a resonant operation by supplying an alternating current to the coil at a resonance frequency in which the mirror 12 and the first holding member 14 are combined, and a second torsion spring It turns around 15 as a rotation axis (beta rotation). In this way, resonant operation with different resonant frequencies is realized in two directions. Note that instead of the resonance operation at the resonance frequency, a drive that is not the resonance operation may be applied.
  • FIG. 8A is a diagram showing a drive waveform of the first torsion spring 13 of the light scanning unit 11.
  • FIG. 8B is a diagram showing a drive waveform of the second torsion spring 15 of the light scanning unit 11.
  • the light scanning unit 11 drives the mirror 12 in a sine wave direction in a direction in which the first torsion spring 13 in FIG. 7 is used as the rotation axis (effective deflection angle: ⁇ 12.9 degrees, cycle: 37.0 ⁇ sec) (See FIG. 8A), the mirror 12 is driven in a sawtooth shape (effective deflection angle: ⁇ 7.1 degrees, period: 16.7 msec) in a direction in which the second torsion spring 15 in FIG. See Figure 8B).
  • the effective deflection angle is the maximum angle at which the image formation is performed among the deflection angles of the mirror 12. 16.7 [msec] which is one cycle of the drive waveform shown to FIG. 8B is time required for drawing of one screen in the display apparatus 51 for vehicles which concerns on this embodiment.
  • FIG. 9 is a schematic view for explaining the details of light deflected and scanned by the mirror 12 of the light scanning unit 11.
  • the light beam incident on the mirror 12 is actually the light beam bundle 940 emitted from the light source device 63, but here only the light beam 19 of the chief ray of the light beam bundle 940 is shown to avoid complexity.
  • the mirror 12 takes the incident state 19i to the mirror 12, the first torsion spring 13 in FIG. 7 as the first rotation axis, and the second torsion spring 15 in FIG. 7 the second rotation axis.
  • incident state 19i to the mirror 12
  • first torsion spring 13 in FIG. 7 as the first rotation axis
  • second torsion spring 15 in FIG. 7 the second rotation axis.
  • “deflection” simply means that the direction of the mirror surface (or the normal to the mirror surface) changes, regardless of the presence or absence of a light beam and the light traveling direction.
  • the light reflected by the mirror 12 then enters the magnifying optical system 21.
  • the optical axis 18 of the magnifying optical system 21 coincides with the direction in which the reflected light 19r is directed when the mirror 12 is in the reference state.
  • 843 is a locus of a light beam reflected and deflected by the ⁇ rotation of the mirror 12
  • 844 is a locus of a light beam reflected and deflected by the ⁇ rotation of the mirror 12.
  • FIG. 10A is a view for explaining the entire optical system of the image forming apparatus 1 including the light scanning unit 11 and the magnifying optical system 21, and an explanatory view including the first rotation axis of the light scanning unit 11 (viewed from VZ plane) It is.
  • FIG. 10B is a view for explaining the entire optical system of the image forming apparatus 1 including the light scanning unit 11 and the magnifying optical system 21.
  • An explanatory view including the first rotation axis of the light scanning unit 11 HZ view It is.
  • the coordinate system is an HVZ coordinate system in which the optical axis of the magnifying optical system 21 is the Z axis, and the position of the mirror 12 is the origin.
  • the light (laser light) emitted from the light source device 63 described above is shaped into parallel light having a diameter of about 1 mm by the collimator lens, and then illuminates the mirror 12 of the light scanning unit 11 via the condenser lens 106.
  • the condensing lens 106 is a plano-convex lens with a convex shape on the light source side with a focal distance of 81 mm, and is disposed at a position 40 mm in front of the mirror 12.
  • the light reflected and deflected by the mirror 12 enters a magnifying optical system 21.
  • the magnifying optical system 21 is composed of five lenses of five lenses L1 to L5 in order from the mirror 12 side, and the lenses L1 to L4 have negative, positive, positive and negative refractive powers in both H and V directions, respectively.
  • the lens L1 has a concave shape on the mirror 12 side
  • the lens L5 has a convex shape on the emission side (image side).
  • the magnifying optical system 21 may have a configuration in which a part of the lens system is replaced by a system using a mirror or a prism.
  • the magnifying optical system 21 is configured by a combination lens shown in FIG.
  • the lenses L1 to L4 of the magnifying optical system 21 according to the present embodiment are symmetrical in the ⁇ H direction with respect to the VZ plane as the entrance and exit surfaces, and asymmetrical in the ⁇ V direction.
  • the entrance surface of the lens L5 is an aspheric surface with HV symmetry, and the exit surface is a spherical surface.
  • the amount of sag of each surface is represented by Z (H, V), and is an HV polynomial (the following equation 1) with Cj (m, n) as a coefficient.
  • the coefficients C j (m, n) of the polynomial (1) are shown in FIG.
  • the light emitted from the magnifying optical system 21 forms an image on a virtual image surface (spherical surface) disposed 500 mm from the exit surface of the lens L5 and scans it.
  • the deflection angles (half angle) 107 (V direction) and 108 (H direction) of the light deflected by the mirror 12 are each magnified three times or more by the magnification optical system 21 and the angle of view (half angle) 17 (V direction) Converted to 32 (H direction).
  • an image is formed on the image plane by light modulation.
  • the virtual image plane of the magnifying optical system 21 shown in FIGS. 10A and 10B is a spherical surface, and the shape of the projection area in the vehicle compartment differs depending on the vehicle type or the same vehicle type depending on the location.
  • a projection image is formed using the correction signal calculated from the shape of the projection area. Further, distortion and chromatic aberration which can not be completely corrected by the magnifying optical system 21 are also electrically corrected by the distortion correction unit 61 of the main control device 57.
  • the vehicle display device 51 is configured to display an image only when scanning the projection area among the entire scanning area. A process of displaying an image only in the projection area will be described with reference to FIGS. 13 to 15.
  • FIG. 13 is a flowchart showing the flow of the initial setting process.
  • the calibration image storage unit 66 of the main control device 57 stores in advance a calibration image including a pattern image and the like used to detect the projection area.
  • the projection area detection unit 65 reads the calibration image, drives the light source device 63 and the image forming apparatus 1, and projects the calibration image (S101).
  • the light amount control unit 59 of the main control device 57 maintains the light source switch of the light source device 63 turned on, and the scanning drive control unit 60 rotates the mirror 12 of the light scanning unit 11.
  • the second camera 54 captures a projection image (S102).
  • the projection area detection unit 65 extracts an image feature amount (for example, contrast or pattern) of the projection image, and compares it with an image feature amount of a known calibration image. Then, it is monitored whether the projected image includes a calibration image.
  • the control signal is a signal that indicates or can calculate the rotation angle of the mirror 12.
  • the identification information of the projection area is added with new identification information. Then, the new identification information and the rotation angle of the mirror 12 at that time (obtained from the control signal obtained in S104) are stacked.
  • the calibration image is also included in the projection image captured at time t + 1, and if the rotation angle of the mirror 12 at that time is an angle adjacent to (continuous with) the rotation angle of the mirror 12 at time t, the same object is The identification information of the projection area is used.
  • the rotation angle of the mirror 12 from time t to time t + n ⁇ 1 is projected toward the projection area specified by the new identification information.
  • the projection area data shown in FIG. 5B is generated and stored in the projection area data storage unit 67.
  • the scan drive control unit 60 rotates the mirror 12 in the entire circumferential direction of the vehicle compartment If not (S105 / No), the process returns to S101, and the scan drive control unit 60 rotates the mirror 12 to a different angle and repeats the process.
  • the data stacked in S104 is stored as the projection area data in the projection area data storage unit 67 of the main control unit 57 (S106). Then, the initialization process is ended.
  • FIG. 14 is a flowchart showing processing in the normal use mode and processing of the projection area selection mode.
  • the user turns on the main power supply of the vehicle display device 51.
  • the scanning drive control unit 60 performs light scanning at the rotation angle of the mirror 12 associated with the projection area selected in S201. While driving the unit 11, the light amount control unit 59 turns on the light source switch of the light source device 63 to emit a laser beam.
  • the scanning drive control unit 60 drives the light scanning unit 11 to the rotation angle of the mirror 12 associated with the projection area not selected in S201, the light amount control unit 59 turns off the light source switch of the light source device 63. And the laser light is not irradiated (S202).
  • the scanning drive control unit 60 When the user does not select a specific projection area by the projection area switching switch 64 (S201 / No), the scanning drive control unit 60 performs light scanning at the rotation angle of the mirror 12 described in the projection area data. While driving the unit 11, the light amount control unit 59 turns on the light source switch of the light source device 63 to emit a laser beam, and the scan drive control unit 60 sets the rotation angle of the mirror 12 not described in the projection area data. While driving the light scanning unit 11, the light amount control unit 59 turns off the light source switch of the light source device 63 (S203).
  • the display device 51 for vehicles can project an image only toward the projection area.
  • the process of FIG. 14 continues until the user turns off the main power supply of the vehicle display device 51.
  • FIG. 15 is a flow chart showing processing in the driver's eye-gaze switching mode, which is processing during normal use.
  • the user turns on the main power supply of the vehicle display device 51.
  • the third camera 55 captures a face image of the driver and outputs the image to the gaze detection device 56.
  • the sight line detection device 56 detects which of the three directions of the center, the left end and the right end corresponds to the sight line direction of the driver (S301), and outputs the result to the main control device 57.
  • Main controller 57 displays an image only in central front projection area 74 (see FIG. 2) if the driver's gaze direction is at the center. If the driver's gaze direction is in the left direction, an image is displayed in the left front projection area 72 (see FIG. 2) and in the right front projection area 73 (see FIG. 2) (S302). When the sight line direction changes, the projection area is switched accordingly.
  • an image can be formed in a plurality of projection areas in the vehicle compartment without driving the optical elements constituting the image forming apparatus 1 or the magnifying optical system 21. .
  • the time responsiveness to image projection can be improved.
  • the drive system is not required, energy saving and reduction in size and weight of the device can be achieved, and the vehicle display device 51 suitable for a car can be realized.
  • the interior of the vehicle compartment is longer in the front-rear direction than in the left-right direction of the vehicle. Therefore, as in the vehicle display device 51 according to the present embodiment, the first direction with a large deflection angle of the light scanning unit 11 is installed on the ceiling in a direction closer to the longitudinal axis than the lateral axis of the vehicle 110, The widening of the magnification optical system 21 is facilitated, and excellent optical performance can be achieved.
  • the aberrational correction of the expansion optical system 21 can be carried out, and the display apparatus for vehicles which has the outstanding optical performance is realizable.
  • the refractive optical element disposed closest to the image of the magnifying optical system 21 has positive refractive power in the first direction and negative refractive power in the second direction. This is advantageous for the design of asymmetric wide-angle lenses. Also, by making the exit surface of the refracting optical element closest to the image side convex on the light exit side, the reflected light is converged when external light such as sunlight or its reflected light illuminates the exit surface, for example. Since the light does not diverge, the light energy density becomes relatively small and safety improves even if the reflected light is incident on the eyes of the car occupant as compared to the case of the concave shape.
  • aberration correction It can be set as a preferred configuration.
  • the light scanning unit 11 can deflect and scan the mirror incident light in the first and second directions with a compact configuration by using the mirror 12. Contributing to reduction in size and weight.
  • the display device 51 for a vehicle of the present embodiment time response is improved, energy saving, size reduction, weight saving and space saving of the device are realized, safety and electromagnetic resistance are ensured, and Images can be displayed at multiple locations.
  • the type of projection image can be switched by the operation of the driver or the passenger, it may be set so as not to project amusement video information such as a television or DVD for safety while driving. Therefore, the main controller 57 is connected to the CAN 80, and information indicating that the vehicle 110 is traveling from various sensors 84 via the ECU 82 mounted on the vehicle 110 (for example, torque data, gasoline injection amount data, wheels When it is determined that the vehicle 110 is traveling, the amusement video information may be controlled to be non-displayed by acquiring the rotation speed data).
  • the first camera 53 does not have to be a single camera, and is additionally provided with a plurality of cameras for acquiring the situation outside the vehicle including the area which will be the blind spot of the driver, and additionally a camera for acquiring the situation inside the vehicle. Also good.
  • the projection area on which the image is projected may be switched automatically. good. For example, in the case where a passenger is riding between the image forming apparatus 1 and the projection area, or when luggage is placed, it becomes an obstacle of the projection image, and in this case it is in the shadow of the obstacle.
  • the projection area may be interlocked with the steering. For example, when the steering wheel is turned to the right, an image may be projected to the right pillar in the vehicle compartment, and when turned to the left, it may be projected to the left pillar.
  • the main control device 57 may be connected to the ECU, steering angle data may be acquired from the steering angle sensor, and the projection area may be switched.
  • Reference Signs List 1 image forming apparatus, 2 front pillars, 3 front pillars, 4 dashboards, 5 side pillars, 6 side pillars, 7 rear pillars, 8 rear pillars, 9 rear seats, 10 light emitted from the image forming apparatus, 11 light scanning units, 12 Mirror, 12a mirror drive portion, 13 first torsion spring, 14 holding member, 15 second torsion spring, 16 holding member, 17 half angle of view (V direction), 18 optical axis, 19 light incident on mirror 12, 20 mirror 12 normal, 21 magnifying optical system, 22 L1 incident surface, 23 L1 outgoing surface, 24 L2 incident surface, 25 L2 outgoing surface, 26 L3 incident surface, 27 L3 outgoing surface, 28 L4 incident surface, 29 L4 outgoing surface, 30 L5 entrance plane, 31 L5 exit plane, 32 half angle of view (H direction), 52 imaging device, 53 first camera La, 54 second camera, 55 third camera, 56 gaze detection device, 57 control device, 58 modulation signal control unit, 59 light amount control unit, 60 scanning drive control unit

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Mechanical Optical Scanning Systems (AREA)
  • Lenses (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Instrument Panels (AREA)
  • Closed-Circuit Television Systems (AREA)
  • Transforming Electric Information Into Light Information (AREA)

Abstract

L'invention concerne un dispositif d'affichage pour véhicules, disposé dans la cabine d'un véhicule et qui projette une lumière sortante, provenant d'un dispositif source de lumière, sur un élément non transparent de la cabine pour afficher une image. Le dispositif d'affichage pour véhicules selon l'invention comprend : un dispositif source de lumière ; un dispositif de formation d'image qui réfléchit, qui dévie et qui projette la lumière sortante vers la cabine et qui forme une image dans une région que doit éclairer la lumière sortante, sur un élément non transparent de la cabine ; et un dispositif principal de commande. Le dispositif de formation d'image comprend : une unité de balayage optique qui comprend une surface réfléchissante permettant de réfléchir la lumière sortante et une unité d'excitation de surface réfléchissante, permettant de faire tourner en va-et-vient la surface réfléchissante et qui effectue un balayage par réflexion et par déviation de la lumière sortante dans une première direction et dans une seconde direction, perpendiculaire à la première direction ; et un système optique de grossissement, qui agrandit l'angle de déviation de la lumière réfléchie et déviée par la surface réfléchissante. Le système optique de grossissement est un système de projection grand angle, qui comprend un élément optique qui agrandit l'angle de déviation de la lumière sortante provenant du système optique de grossissement jusqu'à au moins trois fois celui de la lumière réfléchie et déviée par la surface réfléchissante.
PCT/JP2017/046779 2017-12-26 2017-12-26 Dispositif d'affichage pour véhicules WO2019130447A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP2017/046779 WO2019130447A1 (fr) 2017-12-26 2017-12-26 Dispositif d'affichage pour véhicules
JP2019561448A JP6987343B2 (ja) 2017-12-26 2017-12-26 車両用表示装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2017/046779 WO2019130447A1 (fr) 2017-12-26 2017-12-26 Dispositif d'affichage pour véhicules

Publications (1)

Publication Number Publication Date
WO2019130447A1 true WO2019130447A1 (fr) 2019-07-04

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Country Status (2)

Country Link
JP (1) JP6987343B2 (fr)
WO (1) WO2019130447A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107223A1 (fr) * 2020-02-19 2021-08-20 Valeo Vision Méthode de projection de la lumière à l'intérieur d'un véhicule automobile et assemblage de projecteurs automobiles
WO2021165138A1 (fr) * 2020-02-19 2021-08-26 Valeo Vision Procédé de projection de la lumière à l'intérieur d'un véhicule automobile et ensemble de projecteur automobile
JP2021157337A (ja) * 2020-03-25 2021-10-07 トヨタ自動車株式会社 表示制御装置、画像補正方法及びプログラム

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Publication number Priority date Publication date Assignee Title
JPS63227431A (ja) * 1987-03-17 1988-09-21 Yazaki Corp 車両用表示装置
EP2441635A1 (fr) * 2010-10-06 2012-04-18 Harman Becker Automotive Systems GmbH Système d'interface d'utilisateur de véhicule
JP2012192791A (ja) * 2011-03-15 2012-10-11 Sumitomo Electric Ind Ltd 車載表示装置
JP2013029855A (ja) * 2012-10-03 2013-02-07 Denso Corp 車両用表示装置
JP2015129955A (ja) * 2004-01-06 2015-07-16 セイコーエプソン株式会社 プロジェクタ
JP2016021070A (ja) * 2015-08-19 2016-02-04 日立マクセル株式会社 投写型映像表示装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63227431A (ja) * 1987-03-17 1988-09-21 Yazaki Corp 車両用表示装置
JP2015129955A (ja) * 2004-01-06 2015-07-16 セイコーエプソン株式会社 プロジェクタ
EP2441635A1 (fr) * 2010-10-06 2012-04-18 Harman Becker Automotive Systems GmbH Système d'interface d'utilisateur de véhicule
JP2012192791A (ja) * 2011-03-15 2012-10-11 Sumitomo Electric Ind Ltd 車載表示装置
JP2013029855A (ja) * 2012-10-03 2013-02-07 Denso Corp 車両用表示装置
JP2016021070A (ja) * 2015-08-19 2016-02-04 日立マクセル株式会社 投写型映像表示装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3107223A1 (fr) * 2020-02-19 2021-08-20 Valeo Vision Méthode de projection de la lumière à l'intérieur d'un véhicule automobile et assemblage de projecteurs automobiles
WO2021165138A1 (fr) * 2020-02-19 2021-08-26 Valeo Vision Procédé de projection de la lumière à l'intérieur d'un véhicule automobile et ensemble de projecteur automobile
CN115004693A (zh) * 2020-02-19 2022-09-02 法雷奥照明公司 在机动车辆内部的光投射的方法和机动车投射器组件
JP2021157337A (ja) * 2020-03-25 2021-10-07 トヨタ自動車株式会社 表示制御装置、画像補正方法及びプログラム
JP7314848B2 (ja) 2020-03-25 2023-07-26 トヨタ自動車株式会社 表示制御装置、画像補正方法及びプログラム

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