WO2021241495A1 - Head-up display device - Google Patents

Head-up display device Download PDF

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Publication number
WO2021241495A1
WO2021241495A1 PCT/JP2021/019598 JP2021019598W WO2021241495A1 WO 2021241495 A1 WO2021241495 A1 WO 2021241495A1 JP 2021019598 W JP2021019598 W JP 2021019598W WO 2021241495 A1 WO2021241495 A1 WO 2021241495A1
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WO
WIPO (PCT)
Prior art keywords
unit
display
slider
display unit
position adjusting
Prior art date
Application number
PCT/JP2021/019598
Other languages
French (fr)
Japanese (ja)
Inventor
司 石黒
Original Assignee
日本精機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Priority to JP2022527027A priority Critical patent/JPWO2021241495A1/ja
Publication of WO2021241495A1 publication Critical patent/WO2021241495A1/en

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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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements

Definitions

  • the present invention relates to a head-up display device.
  • a head-up display (HUD) device that emits display light representing an image toward a translucent member (for example, a windshield of a vehicle) and displays a virtual image of the image.
  • a translucent member for example, a windshield of a vehicle
  • Patent Document 1 describes a HUD device including a liquid crystal panel that emits display light based on the light emitted by a light source as a display unit.
  • the HUD device described in Patent Document 1 is configured to be able to adjust the position of the display unit in the optical axis direction of the display light by moving the display unit in order to adjust the display position of the virtual image.
  • the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a head-up display device capable of adjusting the display position of a virtual image while suppressing changes in lighting specifications.
  • the head-up display device is A display unit having a light source, a display unit that emits display light based on the light emitted by the light source, and a first opening through which the display light passes, and having an accommodating unit for accommodating the light source and the display unit.
  • a housing having a second opening facing the first opening and accommodating a reflecting portion that reflects the display light incident inside from the second opening toward an external translucent member.
  • a position adjusting unit for adjusting a position of the display unit along a predetermined direction with respect to the housing is provided.
  • the position adjustment unit is A rail that is immovable with respect to the housing and extends in the predetermined direction, A slider portion that is immovable with respect to the accommodating portion, is fitted to the rail, and can slide along the rail.
  • a drive unit for moving the accommodating portion and the slider portion along the predetermined direction is provided.
  • the slider portion has a first slider and a second slider arranged so as to be spaced apart from each other in the predetermined direction.
  • the schematic diagram which shows the mode of the virtual image display of the head-up display (HUD) apparatus which concerns on one Embodiment of this invention.
  • the schematic perspective view of the HUD apparatus which concerns on the said embodiment.
  • the configuration diagram including the schematic cross-sectional view taken along line AA shown in FIG. 2 of the HUD apparatus which concerns on the said embodiment.
  • the enlarged perspective view of the vicinity of the 1st position adjustment part in the HUD apparatus which concerns on the said embodiment.
  • An enlarged perspective view of the vicinity of the first position adjusting portion according to the same embodiment, which is shown by omitting the housing.
  • the head-up display (HUD: Head-Up Display) device 100 is arranged, for example, in the dashboard 2 of the vehicle 1.
  • the HUD device 100 radiates the display light L toward the windshield 3.
  • the display light L reflected by the windshield 3 causes the user 4 (mainly the driver of the vehicle 1) to visually recognize the image represented by the display light L as a virtual image V.
  • the virtual image V is displayed in front of the vehicle 1 via the windshield 3.
  • the user 4 can visually recognize the virtual image V displayed superimposed on the landscape in front.
  • the virtual image V displays various information about the vehicle 1 (hereinafter referred to as vehicle information).
  • the vehicle information may include not only the information of the vehicle 1 itself but also the external information of the vehicle 1.
  • each configuration may be described using the left / right, up / down, and front / rear directions of the vehicle 1.
  • an X-axis along the left-right direction, a Y-axis along the up-down direction, and a Z-axis along the front-back direction are shown.
  • the direction of the arrow indicating each axis of X, Y, and Z may be referred to as a "+" direction, and the opposite side thereof may be referred to as a "-" direction.
  • the HUD device 100 includes a display unit 10, a reflecting unit 20, a housing 30, and an elastic unit 40, as shown in FIG. Further, as shown in FIG. 4, the HUD device 100 includes a position adjusting unit 50 and a limit switch 60. Further, the HUD device 100 includes a control unit 70 schematically shown in FIG.
  • FIG. 3 shows a schematic cross-sectional view taken along the line AA shown in FIG. 2 of the HUD device 100 and a block diagram of the control unit 70.
  • FIG. 3 shows a schematic cross-sectional view taken along the line AA shown in FIG. 2 of the HUD device 100 and a block diagram of the control unit 70.
  • hatching showing a cross section of the configuration is omitted in consideration of legibility.
  • FIG. 6 is an enlarged perspective view of the vicinity of the first position adjusting portion 50a, which will be described later, in which the housing 30 is omitted.
  • the display unit 10 includes a display unit 11, a lighting unit 12 that illuminates the display unit 11 from below, and an accommodating unit 13 that houses the display unit 11 and the lighting unit 12.
  • the display unit 11 is composed of, for example, a TFT (Thin Film Transistor) type liquid crystal panel.
  • the lighting unit 12 has, for example, a light source 12a made of an LED (Light Emitting Diode), a lens 12b, and a light box 12c.
  • the light emitted by the light source 12a is collected by, for example, a lens 12b made of a condenser lens, passes through the light box 12c, and illuminates the display unit 11.
  • the display unit 11 displays an image on the display surface 11a by being illuminated by the illumination unit 12. As a result, the display light L representing the image is emitted from the display unit 11.
  • the display operation of the display unit 11 is controlled by the control unit 70.
  • the light source 12a is mounted on the light source substrate 14, and the light emitting operation is controlled by the control unit 70.
  • the light emitted from the light source 12a and the central ray of the display light L emitted from the display unit 11 are set along the ⁇ -axis with the Y-axis tilted backward, as shown in FIG. ing. Then, in the display unit 11, the normal of the display surface 11a is set diagonally with respect to the ⁇ axis. As a result, it is possible to prevent the external light that has entered the inside of the display unit 10 from being reflected by the display surface 11a and becoming unnecessary light (hereinafter referred to as "stray light") for display by the HUD device 100. Can be done.
  • the representative light beam of the display light L is schematically shown in FIG.
  • the display light L is actually a light beam passing through the optical system in the HUD device 100, and the light beam of the light beam is the same. Includes rays of various angles with respect to the central ray.
  • the central ray of the display light L can be defined as a ray connecting the center of the display surface 11a and the center of the eye box defined by the user 4 as a visible range of the virtual image V.
  • the movement direction of the display unit 10 described later is set to a direction along the ⁇ axis (hereinafter, referred to as ⁇ direction).
  • the accommodating unit 13 is a housing of the display unit 10, and accommodates the display unit 11 and the lighting unit 12.
  • the accommodating portion 13 includes a main body portion 130 which is formed in a box shape and has an accommodating space for the display unit 11 and the lighting unit 12, and a pair of plate portions 131 and 132 as shown in FIG. , Have.
  • the main body 130 is formed with a first opening H1 that opens upward.
  • the display unit 10 radiates the display light L generated by the display unit 11 from the first opening H1 toward the mirror 21 described later.
  • the plate portion 131 is provided on one of the outer surfaces of the main body portion 130 facing the X direction, and the plate portion 132 is provided on the other side.
  • the plate portion 131 and the plate portion 132 face each other with the main body portion 130 interposed therebetween, and their main surfaces are provided in parallel with each other.
  • the main body 130 and the pair of plate 131, 132 may be integrated or separate.
  • the reflecting unit 20 has a mirror 21 made of a free curved mirror and a concave mirror 22.
  • the mirror 21 reflects the display light L from the display unit 10 toward the concave mirror 22.
  • the concave mirror 22 reflects the display light L from the mirror 21 toward the windshield 3 (an example of a translucent member outside the housing 30).
  • the virtual image V visually recognized by the user 4 due to the display light L reflected by the concave mirror 22 is magnified more than the image displayed on the display unit 11.
  • the mirror 21 may be a plane mirror.
  • the type and number of mirrors constituting the reflecting unit 20 can be arbitrarily changed according to the design.
  • the housing 30 has a main case 30a for accommodating the reflective portion 20 at an appropriate position satisfying the above functions, and as shown in FIG. 4, facing the plate portion 131 of the accommodating portion 13. It has a plate 31 and a facing plate 32 facing the plate portion 132 of the accommodating portion 13.
  • the main case 30a has a box shape that opens upward. As shown in FIG. 3, a second opening H2 is formed in the bottom portion 31b of the main case 30a. The second opening H2 is provided at a position facing the first opening H1 of the display unit 10 in the ⁇ direction. The display light L radiated from the first opening H1 of the display unit 10 passes through the second opening H2, reaches the inside of the housing 30, and is incident on the mirror 21.
  • the main case 30a is provided with an upper case (not shown) connected to the upper end thereof.
  • the upper case is formed with a third opening through which the display light L reflected by the concave mirror 22 passes through the windshield 3 shown in FIG. Further, the upper case is provided with a cover glass (not shown) that closes the third opening and has translucency.
  • the display light L reflected by the concave mirror 22 passes through the cover glass and heads toward the windshield 3.
  • the facing plate 31 is provided on one of the outer surfaces of the main case 30a facing the X direction, and the facing plate 32 is provided on the other side.
  • the facing plate 31 is located outside the plate portion 131, and is located at a distance from the plate portion 131 in the X direction.
  • the facing plate 32 is located outside the plate portion 132, and is located at a distance from the plate portion 132 in the X direction.
  • the elastic portion 40 is a tubular member that connects the first opening H1 and the second opening H2, and the hollow portion thereof has a first opening H1 to a second opening H2.
  • the optical path of the display light L passing through the light path is secured.
  • the elastic portion 40 is formed of, for example, urethane foam, and the outer periphery is formed in a rectangular tubular shape.
  • the elastic portion 40 is fixed to at least one of the accommodating portion 13 and the housing 30.
  • the elastic portion 40 is located between the housing 30 and the accommodating portion 13 in a state of being compressed in the ⁇ direction.
  • the elastic portion 40 maintains a state in which the first opening H1 and the second opening H2 are connected. As a result, it is possible to prevent the display light L from leaking from the gap generated between the display unit 10 and the housing 30 and causing stray light. Further, by maintaining the state in which the first opening H1 and the second opening H2 are connected to each other, the elastic portion 40 can suppress the intrusion of dust from the outside of the HUD device 100.
  • the position adjusting unit 50 shown in FIG. 4 is configured to adjust the position of the display unit 10 with respect to the housing 30.
  • the position adjusting unit 50 adjusts the position of the display unit 10 with respect to the housing 30 in the ⁇ direction. Specifically, the position adjusting unit 50 moves the display unit 10 with respect to the housing 30 within the movable range R (see FIG. 3) along the ⁇ direction. In the movable range R of the display unit 10 by the position adjusting unit 50, even when the display unit 10 is at the position closest to the housing 30 (hereinafter referred to as the closest position), the upper end of the display unit 10 is Does not touch the housing 30.
  • the position where the display unit 10 is most separated from the housing 30 (hereinafter referred to as the most separated position) is defined as a position separated from the closest position by a predetermined distance along the ⁇ direction.
  • the movable range R of this embodiment is the moving range of the display unit 10 from the closest position to the farthest position in the ⁇ direction.
  • FIG. 4 there are a pair of position adjusting units 50, one of which is the first position adjusting unit 50a and the other of which is the second position adjusting unit 50b.
  • the first position adjusting unit 50a is located at the end on the ⁇ X side of the HUD device 100
  • the second position adjusting unit 50b is located at the end on the + X side. Since the configurations of the first position adjusting unit 50a and the second position adjusting unit 50b are the same, the configuration of the first position adjusting unit 50a will be mainly described below, and the description of the second position adjusting unit 50b will be omitted.
  • the first position adjusting unit 50a includes a rail 51a, a slider unit 52a, a driving unit 53a, a transmission unit 54a, and a ball joint 55a.
  • the rail 51a is immovable with respect to the housing 30, and extends in the ⁇ direction as shown in FIG. Specifically, the rail 51a is fixed to the surface of the facing plate 31 facing the accommodating portion 13 (plate portion 131).
  • each axis of ⁇ , ⁇ , and ⁇ may be used for description.
  • the direction in which the arrow indicating each axis of ⁇ , ⁇ , and ⁇ is directed may be referred to as a “+” direction, and the opposite side thereof may be referred to as a “ ⁇ ” direction.
  • the slider portion 52a is immovable with respect to the accommodating portion 13, and is fitted to the rail 51a and slidable along the rail 51a as shown in FIG.
  • the slider unit 52a has a first slider S1 and a second slider S2 arranged at intervals in the ⁇ direction.
  • the plate portion 131 is provided with pedestal portions 131a and 131b that project in the ⁇ direction and are arranged at intervals in the ⁇ direction.
  • the first slider S1 is fixed to the pedestal portion 131a, and the second slider S2 is fixed to the pedestal portion 131b.
  • the first slider S1 and the second slider S2 arranged at intervals in the ⁇ direction allow the rail 51a, which is immovable with respect to the housing 30, to be around the ⁇ axis of the accommodating portion 13 (that is, the display unit 10).
  • the movement that rotates in the direction of ⁇ and the movement in the ⁇ direction are suppressed.
  • the first slider S1 and the second slider S2 each have a shape that sandwiches the rail 51a in the ⁇ direction (that is, the width direction of the rail 51a).
  • the drive unit 53a has a configuration in which the accommodating unit 13 and the slider unit 52a are moved along the ⁇ direction, and has a motor M and a lead screw N.
  • the motor M is composed of, for example, a stepping motor, and is fixed to a motor fixing portion 31a provided on a surface of the facing plate 31 facing in the ⁇ direction, as shown in FIG.
  • the lead screw N extends in the ⁇ direction, and is linearly moved in the ⁇ direction according to the rotation of the motor M by the ball screw mechanism.
  • the lead screw N can reciprocate in the ⁇ -axis direction with respect to the motor M.
  • the lead screw N is supported by the motor M so as to be tilted by a predetermined angle (for example, about 5 °) with respect to the ⁇ axis. Further, the lead screw N is urged in the ⁇ direction by a spring (not shown) provided inside the motor M.
  • the transmission unit 54a is fixed to the plate unit 131 and transmits the power of the lead screw N to the plate unit 131.
  • the transmission portion 54a has a base portion 540 and a pair of leg portions 541 and 542 connected to the base portion 540, and is formed in a U shape.
  • the transmission portion 54a has a pair of leg portions 541 and 542 straddling the rail 51a and the first slider S1 and is fixed to the pedestal portion 131a of the plate portion 131.
  • the base portion 540 of the transmission portion 54a is located on the outer side ( ⁇ side) of the facing plate 31.
  • the legs 541 and 542 of the transmission portion 54a pass through the guide holes G1 and G2 provided in the facing plate 31 and reach the inside (+ ⁇ side) of the facing plate 31.
  • the guide holes G1 and G2 are elongated holes extending in the ⁇ direction while penetrating the facing plate 31 in the ⁇ direction, and guide the movement of the transmission portion 54a in the ⁇ direction.
  • the ball joint 55a has a ball stud and a socket that makes spherical contact with the ball of the ball stud, and connects the lead screw N and the transmission portion 54a as shown in FIG.
  • the ball of the ball stud can rotate around the point C shown in the figure.
  • the ball stud is fixed to the base portion 540 of the transmission portion 54a, and the socket is fixed to the tip of the lead screw N. With this configuration, it is possible to absorb the misalignment in the rotation direction centered on the point C while maintaining high rigidity in the ⁇ direction and connecting the lead screw N and the transmission portion 54a.
  • the ball joint 55a and the lead screw N that can be tilted by a predetermined angle with respect to the ⁇ axis and have elasticity in the ⁇ direction, as described above, provide good alignment of the position of the display unit 10 with respect to the housing 30. Can be adjusted to.
  • the second position adjusting section 50b includes a rail 51b, a driving section 53b, a transmission section 54b, a ball joint 55b, and a slider section (not shown) shown in FIG. I have.
  • the limit switch 60 defines a position where the display unit 10 is farthest from the housing 30 (the above-mentioned farthest position), and is provided in the first position adjusting unit 50a in this embodiment. Specifically, the limit switch 60 is fixed to the surface of the facing plate 31 facing the accommodating portion 13 (plate portion 131). Further, as shown in FIG. 6, the limit switch 60 is provided at a position facing the first slider S1 in the ⁇ direction, and when the slider 52a moves in the ⁇ direction, it contacts and contacts the first slider S1. A detection signal indicating that the operation has been performed is supplied to the control unit 70. The control unit 70 performs drive control of the display unit 10 with the position of the display unit 10 when the detection signal is acquired as the origin.
  • the limit switch 60 may be provided in either the first position adjusting unit 50a or the second position adjusting unit 50b, and may be provided only in the second position adjusting unit 50b. Although the example in which the limit switch 60 is a mechanical switch is shown, other elements may be applied.
  • the limit switch 60 may be composed of elements such as a photo interrupter, an encoder, and a magnetic switch, which are elements that can define the position where the display unit 10 is most distant from the housing 30. Further, the limit switch 60 may detect the position of the display unit based on the counter electromotive force generated in the motor M.
  • the control unit 70 schematically shown in FIG. 3 controls the overall operation of the HUD device 100, and is a microcomputer having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Consists of.
  • ROM Read Only Memory
  • RAM Random Access Memory
  • an operation program for controlling the overall operation of the HUD device 100 and image parts data necessary for configuring an image displayed by the display unit 11 that is, an image visually recognized as a virtual image V
  • the data is stored.
  • the control unit 70 controls the image display operation by the display unit 11 via a display drive circuit (not shown).
  • the control unit 70 may have a video memory dedicated to image storage. Further, the function of the control unit 70 may be realized by the cooperation of a plurality of microcomputers.
  • the control unit 70 is provided at an arbitrary position in, for example, the accommodating unit 13 or the housing 30.
  • control unit 70 drives the position adjustment unit 50 via a drive circuit for position adjustment (not shown), and adjusts the position of the display unit 10 with respect to the housing 30.
  • the virtual image V is displayed closer to the user 4 than when the display unit 10 is in the predetermined position.
  • the virtual image V is displayed farther from the user 4 than when the display unit 10 is at the predetermined position.
  • the control unit 70 drives each of the motor M included in the first position adjusting unit 50a and the motor (not shown) included in the second position adjusting unit 50b with the same drive signal. In this way, by driving the first position adjusting unit 50a and the second position adjusting unit 50b with a common drive signal, the alignment of the first position adjusting unit 50a and the second position adjusting unit 50b can be performed with simple control. (That is, the first position adjusting unit 50a and the second position adjusting unit 50b cooperate to drive the display unit 10 with stable operation).
  • the control unit 70 may drive each of the motor M included in the first position adjusting unit 50a and the motor (not shown) included in the second position adjusting unit 50b with drive signals synchronized with each other. ..
  • control unit 70 communicates with various systems (not shown) configured in the vehicle 1 such as an operation unit and an ECU (Electronic Control Unit) by a known method.
  • the operation unit includes an input device such as a button, a touch pad, and a touch panel.
  • the operation unit receives an operation by the user 4 and supplies a signal indicating the accepted content to the control unit 70.
  • the user 4 can input a command to the HUD device 100 via the operation unit.
  • the user 4 can perform a position adjustment operation of the display unit 10 in order to adjust the display position of the virtual image V that matches his / her viewpoint via the operation unit.
  • the ECU controls the operation of each part of the vehicle 1.
  • the control unit 70 acquires vehicle information indicating the state of the vehicle 1 including a measured amount such as a vehicle speed from the ECU. Then, the control unit 70 can display an image showing the vehicle information acquired from the ECU as a virtual image V.
  • the control unit 70 drives the first position adjustment unit 50a and the second position adjustment unit 50b in response to the position adjustment operation by the user 4. At this time, the control unit 70 uses the same drive signal for the motor M of the first position adjustment unit 50a and the motor (not shown) of the second position adjustment unit 50b, or a drive signal synchronized with each other. Drive.
  • the motor M of the first position adjusting unit 50a rotates according to the supplied drive signal
  • the lead screw N linearly moves along the ⁇ direction according to the rotation of the motor M.
  • the linear movement of the lead screw N is transmitted to the plate portion 131 via the ball joint 55a and the transmission portion 54.
  • the second position adjusting unit 50b operates in the same manner. As a result, the accommodating portion 13 (that is, the display unit 10) moves in the ⁇ direction with respect to the housing 30.
  • the control unit 70 adjusts the position of the display unit 10 with respect to the housing 30 by controlling the movement amount and the direction in the ⁇ direction.
  • the configuration of driving the drive units 53a and 53b provided in both the first position adjustment unit 50a and the second position adjustment unit 50b to move the display unit 10 is shown, but the position adjustment unit 50 is described.
  • the configuration is not limited to this.
  • a configuration may be adopted in which the drive unit is provided only on one of the first position adjustment unit 50a and the second position adjustment unit 50b.
  • the fixed portion of the transmission unit 54a is an intermediate position between the first slider S1 and the second slider S2 in the ⁇ direction.
  • the elastic portion 40 is formed of urethane foam, but even if the display unit 10 moves within the movable range R, the state in which the first opening H1 and the second opening H2 are connected is maintained.
  • the configuration of the elastic portion 40 is arbitrary as long as it can be maintained.
  • the tubular elastic portion 40 connecting the first opening H1 and the second opening H2 may be made of a sponge material other than urethane foam, a bellows member, an elastomer containing rubber, or the like.
  • the configuration of the optical system in the HUD device 100 is arbitrary as long as the display light L from the display unit 10 can be reflected by the reflecting unit 20 toward the windshield 3 which is an example of the external translucent member.
  • the position adjusting unit 50 moves the display unit 10 in the ⁇ direction with respect to the housing 30, but the moving direction of the display unit 10 by the position adjusting unit 50 is arbitrary. It is preferable that the moving direction of the display unit 10 coincides with the direction of the central light beam of the display light L toward the reflection unit 20 (mirror 21 in the example of the above embodiment) from the display unit 10. Further, the second opening H2 of the housing 30 and the first opening H1 of the display unit 10 may face each other in the moving direction of the display unit 10.
  • the display unit 11 of the display unit 10 is composed of a liquid crystal panel
  • the configuration of the display unit 11 and the display unit 10 is not limited and is arbitrary.
  • the display unit 11 included in the display unit 10 may be composed of an OLED (Organic Light-Emitting Diode).
  • the display unit 10 may be configured to include a DMD (Digital Micromirror Device) and a display unit 11 including a transmissive screen that receives reflected light from the DMD and displays an image.
  • DMD Digital Micromirror Device
  • the translucent member that reflects the HUD device 100 toward the user 4 is not limited to the windshield 3 of the vehicle 1, and may be a combiner composed of a plate-shaped half mirror, a hologram element, or the like.
  • the type of vehicle 1 on which the HUD device 100 is mounted is not limited, and can be applied to various vehicles such as motorcycles and motorcycles. Further, the HUD device 100 may be mounted on a vehicle other than the vehicle 1, such as an aircraft, a ship, and a snowmobile.
  • the HUD device 100 described above includes a position adjusting unit 50 that adjusts a position of the display unit 10 with respect to the housing 30 along the ⁇ direction.
  • the position adjusting unit 50 is a driving unit that moves the rail 51a, which is immovable with respect to the housing 30, the slider unit 52a, which is immovable with respect to the accommodating unit 13, and the slider unit 52a along the ⁇ direction (an example in a predetermined direction). 53a and.
  • the slider portion 52a has a first slider S1 and a second slider S2 that are fitted to the rail 51a and arranged at intervals in the ⁇ direction.
  • the entire display unit 10 can be moved without changing the relative positions of the light source 12a and the display unit 11, so that the display position of the virtual image can be adjusted while suppressing the change in the lighting specifications.
  • the first slider S1 and the second slider S2 arranged at intervals in the ⁇ direction suppress the rotation direction of the display unit 10 with respect to the housing 30 around the ⁇ axis and the rattling in the ⁇ direction.
  • the display unit 10 can be moved stably.
  • first slider S1 and the second slider S2 each have a shape that sandwiches the rail 51a in the width direction ( ⁇ direction) of the rail 51a. According to this configuration, as described above, rattling of the display unit 10 in the ⁇ direction with respect to the housing 30 can be suppressed, and the display unit 10 can be moved more stably.
  • the drive unit 53a has a motor M for moving the lead screw N in the ⁇ direction, and the position adjusting unit 50 is fixed to the plate unit 131 of the accommodating unit 13 and of the lead screw N. Further, a transmission unit 54a for transmitting power to the plate unit 131 is provided. The lead screw N and the transmission portion 54a are connected to each other via a ball joint 55a. According to this configuration, as described above, it is possible to absorb the misalignment in the rotation direction centered on the point C while maintaining high rigidity in the ⁇ direction and connecting the lead screw N and the transmission portion 54a.
  • the motor M of the first position adjusting unit 50a and the second position adjusting unit 50a is driven by the same signal or a signal synchronized with each other. According to this configuration, as described above, the first position adjusting unit 50a and the second position adjusting unit 50b can be aligned with simple control.
  • the HUD device 100 further includes a limit switch 60 that defines a position where the display unit 10 is farthest from the housing 30.
  • the limit switch 60 is provided in either the first position adjusting unit 50a or the second position adjusting unit 50b. According to this configuration, the first position adjusting unit 50a and the second position adjusting unit 50b can be aligned with a simple configuration.
  • HUD Head-up display
  • 10 ... Display unit 11 ... Display unit 12 ... Lighting unit, 12a ... Light source, 12b ... Lens, 12c ... Light box 13 ... Housing unit, H1 ... First opening 130 ... Main body unit 131 , 132 ... Plate part, 131a, 131b ... Pedestal part 20 ... Reflection part 30 ... Housing 30a ... Main case, 30b ... Bottom, H2 ... Second opening 31, 32 ... Opposing plate, 31a ... Motor fixing part, G1, G2 ... Guide hole 40 ... Elastic part 50 ... Position adjustment part 50a ... First position adjustment part, 50b ... Second position adjustment part 51a ... Rail 52a ... Slider part, S1 ...

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Instrument Panels (AREA)

Abstract

Provided is a head-up display (HUD) device that is capable of adjusting a display position of a virtual image while inhibiting change in specification of illumination. The HUD device is provided with a display unit 10, a housing for accommodating a reflection part that reflects display light emitted by the display unit 10, and a position adjustment part 50 that adjusts the position of the display unit 10 along the β direction with respect to the housing. The display unit 10 has an accommodation part 13 for accommodating a display part for emitting display light. The position adjustment part 50 is provided with a rail 51a that is immobile with respect to the housing, a slider part 52a that is immobile with respect to the accommodation part 13, and a drive part 53a for moving the slider part 52a along the β direction. The slider part 52a is fitted to the rail 51a, and has a first slider S1 and a second slider S2 disposed apart from each other in the β direction.

Description

ヘッドアップディスプレイ装置Head-up display device
　本発明は、ヘッドアップディスプレイ装置に関する。 The present invention relates to a head-up display device.
　画像を表す表示光を透光部材（例えば、車両のウインドシールド等）に向けて放射し、当該画像の虚像を表示するヘッドアップディスプレイ（ＨＵＤ：Head-Up Display）装置が知られている。 A head-up display (HUD) device is known that emits display light representing an image toward a translucent member (for example, a windshield of a vehicle) and displays a virtual image of the image.
　例えば、特許文献１には、光源が発した光に基づいて表示光を放射する液晶パネルを表示部として備えるＨＵＤ装置が記載されている。特許文献１に記載のＨＵＤ装置は、虚像の表示位置を調整するために表示部を移動させ、表示光の光軸方向における表示部の位置を調整可能に構成されている。 For example, Patent Document 1 describes a HUD device including a liquid crystal panel that emits display light based on the light emitted by a light source as a display unit. The HUD device described in Patent Document 1 is configured to be able to adjust the position of the display unit in the optical axis direction of the display light by moving the display unit in order to adjust the display position of the virtual image.
特許第４９４１０７０号公報Japanese Patent No. 494170
　特許文献１に記載のＨＵＤ装置のように、虚像の表示位置を調整する際に表示部だけを移動させた場合、光源と表示部の相対位置が変化するため、表示部の位置によって照明仕様が変化してしまう。 When only the display unit is moved when adjusting the display position of the virtual image as in the HUD device described in Patent Document 1, the relative positions of the light source and the display unit change, so that the lighting specifications vary depending on the position of the display unit. It will change.
　本発明は、上記実情に鑑みてなされたものであり、照明仕様の変化を抑制しつつ虚像の表示位置を調整することができるヘッドアップディスプレイ装置を提供することを目的とする。 The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a head-up display device capable of adjusting the display position of a virtual image while suppressing changes in lighting specifications.
　上記目的を達成するため、本発明に係るヘッドアップディスプレイ装置は、
　光源、前記光源が発した光に基づいて表示光を放射する表示部、及び、前記表示光が通過する第１開口部が形成され、前記光源及び前記表示部を収容する収容部を有する表示ユニットと、
　前記第１開口部と対向する第２開口部を有し、前記第２開口部から内部に入射した前記表示光を外部の透光部材に向けて反射させる反射部を収容する筐体と、
　前記筐体に対する前記表示ユニットの所定方向に沿う位置を調整する位置調整部と、を備え、
　前記位置調整部は、
　前記筐体に対して不動であり、前記所定方向に延びるレールと、
　前記収容部に対して不動であり、前記レールに嵌め合わされるとともに、前記レールに沿ってスライド可能なスライダ部と、
　前記収容部及び前記スライダ部を前記所定方向に沿って移動させる駆動部と、を備え、
　前記スライダ部は、前記所定方向に互いに間隔を空けて配置された第１スライダ及び第２スライダを有する。 In order to achieve the above object, the head-up display device according to the present invention is
A display unit having a light source, a display unit that emits display light based on the light emitted by the light source, and a first opening through which the display light passes, and having an accommodating unit for accommodating the light source and the display unit. When,
A housing having a second opening facing the first opening and accommodating a reflecting portion that reflects the display light incident inside from the second opening toward an external translucent member.
A position adjusting unit for adjusting a position of the display unit along a predetermined direction with respect to the housing is provided.
The position adjustment unit is
A rail that is immovable with respect to the housing and extends in the predetermined direction,
A slider portion that is immovable with respect to the accommodating portion, is fitted to the rail, and can slide along the rail.
A drive unit for moving the accommodating portion and the slider portion along the predetermined direction is provided.
The slider portion has a first slider and a second slider arranged so as to be spaced apart from each other in the predetermined direction.
　本発明によれば、照明仕様の変化を抑制しつつ虚像の表示位置を調整することができる。 According to the present invention, it is possible to adjust the display position of the virtual image while suppressing the change in the lighting specifications.
本発明の一実施形態に係るヘッドアップディスプレイ（ＨＵＤ）装置の虚像表示の態様を示す模式図。The schematic diagram which shows the mode of the virtual image display of the head-up display (HUD) apparatus which concerns on one Embodiment of this invention. 同上実施形態に係るＨＵＤ装置の概略斜視図。The schematic perspective view of the HUD apparatus which concerns on the said embodiment. 同上実施形態に係るＨＵＤ装置の図２に示すＡ－Ａ線概略断面図を含む構成図。The configuration diagram including the schematic cross-sectional view taken along line AA shown in FIG. 2 of the HUD apparatus which concerns on the said embodiment. 同上実施形態に係るＨＵＤ装置をＺ方向から見た図。The figure which looked at the HUD apparatus which concerns on the said embodiment from the Z direction. 同上実施形態に係るＨＵＤ装置における第１位置調整部の近傍の拡大斜視図。The enlarged perspective view of the vicinity of the 1st position adjustment part in the HUD apparatus which concerns on the said embodiment. 筐体を省略して表した同上実施形態に係る第１位置調整部の近傍の拡大斜視図。An enlarged perspective view of the vicinity of the first position adjusting portion according to the same embodiment, which is shown by omitting the housing.
　本発明の一実施形態について図面を参照して説明する。 An embodiment of the present invention will be described with reference to the drawings.
　図１に示すように、本実施形態に係るヘッドアップディスプレイ（ＨＵＤ：Head-Up Display）装置１００は、例えば、車両１のダッシュボード２内に配設される。ＨＵＤ装置１００は、表示光Ｌをウインドシールド３に向けて放射する。ウインドシールド３で反射した表示光Ｌは、ユーザ４（主に車両１の運転者）に表示光Ｌが表す画像を虚像Ｖとして視認させる。虚像Ｖは、ウインドシールド３を介して車両１の前方に表示される。これにより、ユーザ４は、前方風景に重畳して表示される虚像Ｖを視認することができる。虚像Ｖは、車両１に関する各種情報（以下、車両情報と言う。）を表示する。なお、車両情報は、車両１自体の情報のみならず、車両１の外部情報も含んでいてもよい。 As shown in FIG. 1, the head-up display (HUD: Head-Up Display) device 100 according to the present embodiment is arranged, for example, in the dashboard 2 of the vehicle 1. The HUD device 100 radiates the display light L toward the windshield 3. The display light L reflected by the windshield 3 causes the user 4 (mainly the driver of the vehicle 1) to visually recognize the image represented by the display light L as a virtual image V. The virtual image V is displayed in front of the vehicle 1 via the windshield 3. As a result, the user 4 can visually recognize the virtual image V displayed superimposed on the landscape in front. The virtual image V displays various information about the vehicle 1 (hereinafter referred to as vehicle information). The vehicle information may include not only the information of the vehicle 1 itself but also the external information of the vehicle 1.
　以下では、車両１の左右、上下、及び前後方向を用いて各構成を説明する場合がある。適宜の図において、左右方向に沿うＸ軸、上下方向に沿うＹ軸、前後方向に沿うＺ軸を示した。また、Ｘ、Ｙ、Ｚの各軸を示す矢印の向く方向を「＋」方向、その反対側を「－」方向と呼ぶ場合がある。 In the following, each configuration may be described using the left / right, up / down, and front / rear directions of the vehicle 1. In an appropriate figure, an X-axis along the left-right direction, a Y-axis along the up-down direction, and a Z-axis along the front-back direction are shown. Further, the direction of the arrow indicating each axis of X, Y, and Z may be referred to as a "+" direction, and the opposite side thereof may be referred to as a "-" direction.
　ＨＵＤ装置１００は、図３に示す、表示ユニット１０、反射部２０、筐体３０及び弾性部４０を備える。また、ＨＵＤ装置１００は、図４に示すように、位置調整部５０及びリミットスイッチ６０を備える。また、ＨＵＤ装置１００は、図３に模式的に示す制御部７０を備える。 The HUD device 100 includes a display unit 10, a reflecting unit 20, a housing 30, and an elastic unit 40, as shown in FIG. Further, as shown in FIG. 4, the HUD device 100 includes a position adjusting unit 50 and a limit switch 60. Further, the HUD device 100 includes a control unit 70 schematically shown in FIG.
　なお、図３は、ＨＵＤ装置１００の図２に示すＡ－Ａ線での概略断面図と、制御部７０のブロック図とを表したものである。図３の概略断面図では、見易さを考慮して適宜構成の断面を示すハッチングを省略した。また、図６は、筐体３０を省略して表した、後述の第１位置調整部５０ａの近傍の拡大斜視図である。 Note that FIG. 3 shows a schematic cross-sectional view taken along the line AA shown in FIG. 2 of the HUD device 100 and a block diagram of the control unit 70. In the schematic cross-sectional view of FIG. 3, hatching showing a cross section of the configuration is omitted in consideration of legibility. Further, FIG. 6 is an enlarged perspective view of the vicinity of the first position adjusting portion 50a, which will be described later, in which the housing 30 is omitted.
　表示ユニット１０は、表示部１１と、表示部１１を下方から照明する照明部１２と、表示部１１及び照明部１２を収容する収容部１３と、を有する。 The display unit 10 includes a display unit 11, a lighting unit 12 that illuminates the display unit 11 from below, and an accommodating unit 13 that houses the display unit 11 and the lighting unit 12.
　表示部１１は、例えば、ＴＦＴ（Thin Film Transistor）型の液晶パネルから構成されている。照明部１２は、例えばＬＥＤ（Light Emitting Diode）からなる光源１２ａと、レンズ１２ｂと、ライトボックス１２ｃと、を有する。光源１２ａが発した光は、例えばコンデンサレンズからなるレンズ１２ｂに集光され、ライトボックス１２ｃを通過して表示部１１を照明する。表示部１１は、照明部１２によって照明されることで画像を表示面１１ａに表示する。これにより、画像を表す表示光Ｌが表示部１１から放射される。表示部１１は、制御部７０によって画像の表示動作が制御される。光源１２ａは、光源用基板１４に実装され、制御部７０によって発光動作が制御される。 The display unit 11 is composed of, for example, a TFT (Thin Film Transistor) type liquid crystal panel. The lighting unit 12 has, for example, a light source 12a made of an LED (Light Emitting Diode), a lens 12b, and a light box 12c. The light emitted by the light source 12a is collected by, for example, a lens 12b made of a condenser lens, passes through the light box 12c, and illuminates the display unit 11. The display unit 11 displays an image on the display surface 11a by being illuminated by the illumination unit 12. As a result, the display light L representing the image is emitted from the display unit 11. The display operation of the display unit 11 is controlled by the control unit 70. The light source 12a is mounted on the light source substrate 14, and the light emitting operation is controlled by the control unit 70.
　この実施形態では、光源１２ａから発せられる光、及び、表示部１１から放射される表示光Ｌの中心光線は、図３に示すように、Ｙ軸を後方に傾けたβ軸に沿って設定されている。そして、表示部１１は、表示面１１ａの法線がβ軸に対して斜めに設定されている。これにより、表示ユニット１０の内部へ入り込んだ外光が表示面１１ａで反射し、ＨＵＤ装置１００により表示を行う上で不要な光（以下、「迷光」と呼ぶ。）となることを抑制することができる。
　なお、図３等においては、表示光Ｌの代表的な光線を模式的に示しているが、実際には、表示光Ｌは、ＨＵＤ装置１００における光学系を通過する光束であり、当該光束の中心光線に対して様々な角度の光線を含む。表示光Ｌの中心光線は、表示面１１ａの中心と、ユーザ４が虚像Ｖを視認可能な範囲として規定されるアイボックスの中心とを結ぶ光線として定義することができる。また、この実施形態では、表示ユニット１０の後述の移動方向は、β軸に沿う方向（以下、β方向と言う。）に設定されている。 In this embodiment, the light emitted from the light source 12a and the central ray of the display light L emitted from the display unit 11 are set along the β-axis with the Y-axis tilted backward, as shown in FIG. ing. Then, in the display unit 11, the normal of the display surface 11a is set diagonally with respect to the β axis. As a result, it is possible to prevent the external light that has entered the inside of the display unit 10 from being reflected by the display surface 11a and becoming unnecessary light (hereinafter referred to as "stray light") for display by the HUD device 100. Can be done.
Although the representative light beam of the display light L is schematically shown in FIG. 3 and the like, the display light L is actually a light beam passing through the optical system in the HUD device 100, and the light beam of the light beam is the same. Includes rays of various angles with respect to the central ray. The central ray of the display light L can be defined as a ray connecting the center of the display surface 11a and the center of the eye box defined by the user 4 as a visible range of the virtual image V. Further, in this embodiment, the movement direction of the display unit 10 described later is set to a direction along the β axis (hereinafter, referred to as β direction).
　収容部１３は、表示ユニット１０の筐体であり、表示部１１及び照明部１２を収容する。収容部１３は、図３に示すように、箱状に形成されて表示部１１及び照明部１２の収容空間を有する本体部１３０と、図４に示すように、一対のプレート部１３１，１３２と、を有する。本体部１３０には、図３に示すように、上方に向かって開口した第１開口部Ｈ１が形成されている。表示ユニット１０は、表示部１１で生成された表示光Ｌを、第１開口部Ｈ１から後述の鏡２１に向けて放射する。 The accommodating unit 13 is a housing of the display unit 10, and accommodates the display unit 11 and the lighting unit 12. As shown in FIG. 3, the accommodating portion 13 includes a main body portion 130 which is formed in a box shape and has an accommodating space for the display unit 11 and the lighting unit 12, and a pair of plate portions 131 and 132 as shown in FIG. , Have. As shown in FIG. 3, the main body 130 is formed with a first opening H1 that opens upward. The display unit 10 radiates the display light L generated by the display unit 11 from the first opening H1 toward the mirror 21 described later.
　図４に示すように、本体部１３０のＸ方向に向く外側面の一方にプレート部１３１が設けられ、他方にプレート部１３２が設けられている。プレート部１３１及びプレート部１３２は、本体部１３０を挟んで互いに対向し、且つ、互いの主面が平行に設けられている。なお、本体部１３０と、一対のプレート部１３１，１３２とは、一体であっても別体であってもよい。 As shown in FIG. 4, the plate portion 131 is provided on one of the outer surfaces of the main body portion 130 facing the X direction, and the plate portion 132 is provided on the other side. The plate portion 131 and the plate portion 132 face each other with the main body portion 130 interposed therebetween, and their main surfaces are provided in parallel with each other. The main body 130 and the pair of plate 131, 132 may be integrated or separate.
　反射部２０は、図３に示すように、自由曲面鏡からなる鏡２１と、凹面鏡２２と、を有する。鏡２１は、表示ユニット１０からの表示光Ｌを凹面鏡２２に向けて反射させる。凹面鏡２２は、鏡２１からの表示光Ｌをウインドシールド３（筐体３０外部の透光部材の一例）に向けて反射させる。凹面鏡２２で反射した表示光Ｌにより、ユーザ４に視認される虚像Ｖは、表示部１１に表示されている画像よりも拡大されたものとなる。なお、鏡２１は、平面鏡であってもよい。反射部２０を構成する鏡の種類、枚数は、設計に応じて任意に変更可能である。 As shown in FIG. 3, the reflecting unit 20 has a mirror 21 made of a free curved mirror and a concave mirror 22. The mirror 21 reflects the display light L from the display unit 10 toward the concave mirror 22. The concave mirror 22 reflects the display light L from the mirror 21 toward the windshield 3 (an example of a translucent member outside the housing 30). The virtual image V visually recognized by the user 4 due to the display light L reflected by the concave mirror 22 is magnified more than the image displayed on the display unit 11. The mirror 21 may be a plane mirror. The type and number of mirrors constituting the reflecting unit 20 can be arbitrarily changed according to the design.
　筐体３０は、図３に示すように、反射部２０を上記の機能を満たす適宜の位置に収容するメインケース３０ａと、図４に示すように、収容部１３のプレート部１３１と対向する対向プレート３１、及び、収容部１３のプレート部１３２と対向する対向プレート３２と、を有する。 As shown in FIG. 3, the housing 30 has a main case 30a for accommodating the reflective portion 20 at an appropriate position satisfying the above functions, and as shown in FIG. 4, facing the plate portion 131 of the accommodating portion 13. It has a plate 31 and a facing plate 32 facing the plate portion 132 of the accommodating portion 13.
　メインケース３０ａは、上方に向かって開口した箱状をなしている。図３に示すように、メインケース３０ａの底部３１ｂには、第２開口部Ｈ２が形成されている。第２開口部Ｈ２は、β方向で表示ユニット１０の第１開口部Ｈ１と対向する位置に設けられている。表示ユニット１０の第１開口部Ｈ１から放射された表示光Ｌは、第２開口部Ｈ２を通過して筐体３０の内部に至り、鏡２１に入射する。
　メインケース３０ａには、その上端部と連結されるアッパーケース（図示せず）が設けられる。アッパーケースには、凹面鏡２２で反射した表示光Ｌを、図１に示すウインドシールド３へと通過させる第３開口部が形成される。また、アッパーケースには、第３開口部を塞ぐとともに透光性を有するカバーガラス（図示せず）が設けられる。凹面鏡２２で反射した表示光Ｌは、カバーガラスを透過してウインドシールド３に向かう。 The main case 30a has a box shape that opens upward. As shown in FIG. 3, a second opening H2 is formed in the bottom portion 31b of the main case 30a. The second opening H2 is provided at a position facing the first opening H1 of the display unit 10 in the β direction. The display light L radiated from the first opening H1 of the display unit 10 passes through the second opening H2, reaches the inside of the housing 30, and is incident on the mirror 21.
The main case 30a is provided with an upper case (not shown) connected to the upper end thereof. The upper case is formed with a third opening through which the display light L reflected by the concave mirror 22 passes through the windshield 3 shown in FIG. Further, the upper case is provided with a cover glass (not shown) that closes the third opening and has translucency. The display light L reflected by the concave mirror 22 passes through the cover glass and heads toward the windshield 3.
　図４に示すように、メインケース３０ａのＸ方向に向く外側面の一方に対向プレート３１が設けられ、他方に対向プレート３２が設けられている。対向プレート３１は、プレート部１３１の外側に位置し、プレート部１３１とＸ方向に間隔を空けて位置する。対向プレート３２は、プレート部１３２の外側に位置し、プレート部１３２とＸ方向に間隔を空けて位置する。 As shown in FIG. 4, the facing plate 31 is provided on one of the outer surfaces of the main case 30a facing the X direction, and the facing plate 32 is provided on the other side. The facing plate 31 is located outside the plate portion 131, and is located at a distance from the plate portion 131 in the X direction. The facing plate 32 is located outside the plate portion 132, and is located at a distance from the plate portion 132 in the X direction.
　弾性部４０は、図３に示すように、第１開口部Ｈ１と第２開口部Ｈ２とを接続する筒状の部材であって、その中空部分において第１開口部Ｈ１から第２開口部Ｈ２へと通過する表示光Ｌの光路を確保する。弾性部４０は、例えば、発泡ウレタンから形成され、外周が四角形状の角筒状に形成されている。弾性部４０は、収容部１３と筐体３０の少なくともいずれかに固定される。弾性部４０は、筐体３０及び収容部１３の両者によってβ方向に圧縮された状態で当該両者の間に位置する。そして、弾性部４０は、表示ユニット１０がβ軸に沿う可動範囲Ｒ内で移動しても、第１開口部Ｈ１と第２開口部Ｈ２とを接続した状態を維持する。これにより、表示ユニット１０と筐体３０との間に生じる隙間から表示光Ｌが漏れ出し、迷光が生じることを抑制することができる。また、弾性部４０は、第１開口部Ｈ１と第２開口部Ｈ２とを接続した状態を維持していることにより、ＨＵＤ装置１００の外部からの塵埃の侵入を抑制することができる。 As shown in FIG. 3, the elastic portion 40 is a tubular member that connects the first opening H1 and the second opening H2, and the hollow portion thereof has a first opening H1 to a second opening H2. The optical path of the display light L passing through the light path is secured. The elastic portion 40 is formed of, for example, urethane foam, and the outer periphery is formed in a rectangular tubular shape. The elastic portion 40 is fixed to at least one of the accommodating portion 13 and the housing 30. The elastic portion 40 is located between the housing 30 and the accommodating portion 13 in a state of being compressed in the β direction. Then, even if the display unit 10 moves within the movable range R along the β axis, the elastic portion 40 maintains a state in which the first opening H1 and the second opening H2 are connected. As a result, it is possible to prevent the display light L from leaking from the gap generated between the display unit 10 and the housing 30 and causing stray light. Further, by maintaining the state in which the first opening H1 and the second opening H2 are connected to each other, the elastic portion 40 can suppress the intrusion of dust from the outside of the HUD device 100.
　図４に示す位置調整部５０は、筐体３０に対する表示ユニット１０の位置を調整するための構成である。この実施形態では、位置調整部５０は、筐体３０に対する表示ユニット１０のβ方向の位置を調整する。具体的に、位置調整部５０は、β方向に沿う可動範囲Ｒ（図３参照）内で、筐体３０に対して表示ユニット１０を移動させる。位置調整部５０による表示ユニット１０の可動範囲Ｒにおいて、表示ユニット１０が筐体３０と最も接近する位置（以下、最接近位置と言う。）にある場合であっても、表示ユニット１０の上端は筐体３０に接触しない。また、可動範囲Ｒにおいて、表示ユニット１０が筐体３０と最も離反する位置（以下、最離反位置と言う。）は、最接近位置からβ方向に沿って所定距離だけ離れた位置として定められている。つまり、この実施形態の可動範囲Ｒは、β方向における最接近位置から最離反位置までの表示ユニット１０の移動範囲である。 The position adjusting unit 50 shown in FIG. 4 is configured to adjust the position of the display unit 10 with respect to the housing 30. In this embodiment, the position adjusting unit 50 adjusts the position of the display unit 10 with respect to the housing 30 in the β direction. Specifically, the position adjusting unit 50 moves the display unit 10 with respect to the housing 30 within the movable range R (see FIG. 3) along the β direction. In the movable range R of the display unit 10 by the position adjusting unit 50, even when the display unit 10 is at the position closest to the housing 30 (hereinafter referred to as the closest position), the upper end of the display unit 10 is Does not touch the housing 30. Further, in the movable range R, the position where the display unit 10 is most separated from the housing 30 (hereinafter referred to as the most separated position) is defined as a position separated from the closest position by a predetermined distance along the β direction. There is. That is, the movable range R of this embodiment is the moving range of the display unit 10 from the closest position to the farthest position in the β direction.
　この実施形態では、図４に示すように、位置調整部５０は、一対あり、一方を第１位置調整部５０ａとし、他方を第２位置調整部５０ｂとする。ＨＵＤ装置１００における－Ｘ側の端部に第１位置調整部５０ａが位置し、＋Ｘ側の端部に第２位置調整部５０ｂが位置する。第１位置調整部５０ａと第２位置調整部５０ｂの構成は同様であるため、以下では、第１位置調整部５０ａの構成を主に説明し、第２位置調整部５０ｂの説明を省略する。 In this embodiment, as shown in FIG. 4, there are a pair of position adjusting units 50, one of which is the first position adjusting unit 50a and the other of which is the second position adjusting unit 50b. The first position adjusting unit 50a is located at the end on the −X side of the HUD device 100, and the second position adjusting unit 50b is located at the end on the + X side. Since the configurations of the first position adjusting unit 50a and the second position adjusting unit 50b are the same, the configuration of the first position adjusting unit 50a will be mainly described below, and the description of the second position adjusting unit 50b will be omitted.
　第１位置調整部５０ａは、図４に示すように、レール５１ａと、スライダ部５２ａと、駆動部５３ａと、伝達部５４ａと、ボールジョイント５５ａと、を備える。 As shown in FIG. 4, the first position adjusting unit 50a includes a rail 51a, a slider unit 52a, a driving unit 53a, a transmission unit 54a, and a ball joint 55a.
　レール５１ａは、筐体３０に対して不動であり、図４に示すように、β方向に延びている。具体的に、レール５１ａは、対向プレート３１の収容部１３（プレート部１３１）に向く面に固定されている。 The rail 51a is immovable with respect to the housing 30, and extends in the β direction as shown in FIG. Specifically, the rail 51a is fixed to the surface of the facing plate 31 facing the accommodating portion 13 (plate portion 131).
　ここで、図５、図６に示すように、β軸と直交し、レール５１ａの幅方向に延びる軸をγ軸とし、β及びγ軸と直交する軸をα軸とする。以下では、位置調整部５０の構成の理解を容易とするため、α、β、γの各軸を用いて説明する場合がある。また、α、β、γの各軸を示す矢印の向く方向を「＋」方向、その反対側を「－」方向と呼ぶ場合がある。 Here, as shown in FIGS. 5 and 6, the axis orthogonal to the β axis and extending in the width direction of the rail 51a is defined as the γ axis, and the axes orthogonal to the β and γ axes are defined as the α axis. In the following, in order to facilitate understanding of the configuration of the position adjusting unit 50, each axis of α, β, and γ may be used for description. Further, the direction in which the arrow indicating each axis of α, β, and γ is directed may be referred to as a “+” direction, and the opposite side thereof may be referred to as a “−” direction.
　スライダ部５２ａは、収容部１３に対して不動であり、図４に示すように、レール５１ａに嵌め合わされるとともに、レール５１ａに沿ってスライド可能な構成である。具体的に、スライダ部５２ａは、図６に示すように、β方向に互いに間隔を空けて配置された第１スライダＳ１及び第２スライダＳ２を有する。プレート部１３１には、－α方向に突出するとともに、β方向に互いに間隔を空けて配置された台座部１３１ａ，１３１ｂが設けられている。第１スライダＳ１は台座部１３１ａに固定され、第２スライダＳ２は台座部１３１ｂに固定されている。 The slider portion 52a is immovable with respect to the accommodating portion 13, and is fitted to the rail 51a and slidable along the rail 51a as shown in FIG. Specifically, as shown in FIG. 6, the slider unit 52a has a first slider S1 and a second slider S2 arranged at intervals in the β direction. The plate portion 131 is provided with pedestal portions 131a and 131b that project in the −α direction and are arranged at intervals in the β direction. The first slider S1 is fixed to the pedestal portion 131a, and the second slider S2 is fixed to the pedestal portion 131b.
　β方向に互いに間隔を空けて配置された第１スライダＳ１及び第２スライダＳ２により、筐体３０に対して不動なレール５１ａに対して、収容部１３（つまり、表示ユニット１０）のγ軸周りに回転する動きと、α方向の動きとが抑制される。これにより、筐体３０に対する表示ユニット１０のγ軸周りの回転方向、及び、α方向のガタつきを抑制することができる。
　また、第１スライダＳ１及び第２スライダＳ２は、各々、γ方向（つまり、レール５１ａの幅方向）においてレール５１ａを挟み込む形状を有する。この構成により、レール５１ａに対する、スライダ部５２ａのγ方向の動きを抑制することができる。結果として、筐体３０に対する表示ユニット１０のγ方向のガタつきを抑制することができる。
　以上により、レール５１ａに対するスライダ部５２ａのβ方向の動きを許容しつつ、他の方向のガタつきを抑制し、筐体３０に対して表示ユニット１０を安定して駆動することができる。 The first slider S1 and the second slider S2 arranged at intervals in the β direction allow the rail 51a, which is immovable with respect to the housing 30, to be around the γ axis of the accommodating portion 13 (that is, the display unit 10). The movement that rotates in the direction of α and the movement in the α direction are suppressed. As a result, it is possible to suppress rattling in the rotation direction and the α direction of the display unit 10 with respect to the housing 30 around the γ axis.
Further, the first slider S1 and the second slider S2 each have a shape that sandwiches the rail 51a in the γ direction (that is, the width direction of the rail 51a). With this configuration, it is possible to suppress the movement of the slider portion 52a in the γ direction with respect to the rail 51a. As a result, rattling of the display unit 10 with respect to the housing 30 in the γ direction can be suppressed.
As described above, it is possible to allow the slider portion 52a to move in the β direction with respect to the rail 51a, suppress rattling in other directions, and stably drive the display unit 10 with respect to the housing 30.
　駆動部５３ａは、収容部１３及びスライダ部５２ａをβ方向に沿って移動させる構成であり、モータＭと、リードスクリューＮと、を有する。モータＭは、例えばステッピングモータから構成され、図５に示すように、対向プレート３１の－α方向に向く面に設けられた、モータ固定部３１ａに固定されている。リードスクリューＮは、β方向に延びており、ボールねじ機構によってモータＭの回転に応じてβ方向に直線移動する。リードスクリューＮは、モータＭに対してβ軸方向に往復運動が可能である。リードスクリューＮは、β軸に対して所定角度（例えば５°程度）だけ傾倒可能にモータＭに支持されている。また、リードスクリューＮは、モータＭの内部に設けられたばね（図示せず）で、－β方向に付勢されている。 The drive unit 53a has a configuration in which the accommodating unit 13 and the slider unit 52a are moved along the β direction, and has a motor M and a lead screw N. The motor M is composed of, for example, a stepping motor, and is fixed to a motor fixing portion 31a provided on a surface of the facing plate 31 facing in the −α direction, as shown in FIG. The lead screw N extends in the β direction, and is linearly moved in the β direction according to the rotation of the motor M by the ball screw mechanism. The lead screw N can reciprocate in the β-axis direction with respect to the motor M. The lead screw N is supported by the motor M so as to be tilted by a predetermined angle (for example, about 5 °) with respect to the β axis. Further, the lead screw N is urged in the −β direction by a spring (not shown) provided inside the motor M.
　伝達部５４ａは、プレ－ト部１３１に固定されるとともに、リードスクリューＮの動力をプレート部１３１に伝達する。具体的に、伝達部５４ａは、図６に示すように、台部５４０と、台部５４０と連結された一対の脚部５４１，５４２と、を有してＵ字状に形成されている。伝達部５４ａは、一対の脚部５４１，５４２がレール５１ａ及び第１スライダＳ１を跨ぐ格好で、プレート部１３１の台座部１３１ａに固定されている。図５に示すように、伝達部５４ａの台部５４０は、対向プレート３１の外側（－α側）に位置する。伝達部５４ａの脚部５４１，５４２は、対向プレート３１に設けられたガイド孔Ｇ１，Ｇ２を通って、対向プレート３１の内側（＋α側）に至っている。ガイド孔Ｇ１，Ｇ２は、対向プレート３１をα方向に貫通するとともに、β方向に延びる長孔であり、伝達部５４ａのβ方向の移動を案内する。 The transmission unit 54a is fixed to the plate unit 131 and transmits the power of the lead screw N to the plate unit 131. Specifically, as shown in FIG. 6, the transmission portion 54a has a base portion 540 and a pair of leg portions 541 and 542 connected to the base portion 540, and is formed in a U shape. The transmission portion 54a has a pair of leg portions 541 and 542 straddling the rail 51a and the first slider S1 and is fixed to the pedestal portion 131a of the plate portion 131. As shown in FIG. 5, the base portion 540 of the transmission portion 54a is located on the outer side (−α side) of the facing plate 31. The legs 541 and 542 of the transmission portion 54a pass through the guide holes G1 and G2 provided in the facing plate 31 and reach the inside (+ α side) of the facing plate 31. The guide holes G1 and G2 are elongated holes extending in the β direction while penetrating the facing plate 31 in the α direction, and guide the movement of the transmission portion 54a in the β direction.
　ボールジョイント５５ａは、ボールスタッドと、ボールスタッドのボールと球面接触するソケットとを有し、図６に示すように、リードスクリューＮと伝達部５４ａを連結する。例えば、ボールスタッドのボールは、同図に示す点Ｃを中心に回転可能となっている。そして、ボールジョイント５５ａは、ボールスタッドが伝達部５４ａの台部５４０に固定され、ソケットがリードスクリューＮの先端に固定されている。この構成により、β方向に高い剛性を保ちリードスクリューＮと伝達部５４ａを連結しつつ、点Ｃを中心とした回転方向のアライメントずれを吸収することができる。 The ball joint 55a has a ball stud and a socket that makes spherical contact with the ball of the ball stud, and connects the lead screw N and the transmission portion 54a as shown in FIG. For example, the ball of the ball stud can rotate around the point C shown in the figure. In the ball joint 55a, the ball stud is fixed to the base portion 540 of the transmission portion 54a, and the socket is fixed to the tip of the lead screw N. With this configuration, it is possible to absorb the misalignment in the rotation direction centered on the point C while maintaining high rigidity in the β direction and connecting the lead screw N and the transmission portion 54a.
　ここで、前述したスライダ部５２ａの構成により、筐体３０に対する表示ユニット１０のガタつきを良好に抑制したぶん、部品間のクリアランスが保てなくなる可能性がある。しかしながら、ボールジョイント５５ａと、前述のように、β軸に対して所定角度だけ傾倒可能、且つ、β方向に弾性を有するリードスクリューＮとによって、筐体３０に対する表示ユニット１０の位置のアライメントを良好に調整することができる。 Here, due to the configuration of the slider portion 52a described above, there is a possibility that the clearance between the parts cannot be maintained because the rattling of the display unit 10 with respect to the housing 30 is satisfactorily suppressed. However, the ball joint 55a and the lead screw N that can be tilted by a predetermined angle with respect to the β axis and have elasticity in the β direction, as described above, provide good alignment of the position of the display unit 10 with respect to the housing 30. Can be adjusted to.
　以上の構成からなる第１位置調整部５０ａと同様に、第２位置調整部５０ｂは、図４に示すレール５１ｂ、駆動部５３ｂ、伝達部５４ｂ及びボールジョイント５５ｂと、図示しないスライダ部と、を備えている。 Similar to the first position adjusting section 50a having the above configuration, the second position adjusting section 50b includes a rail 51b, a driving section 53b, a transmission section 54b, a ball joint 55b, and a slider section (not shown) shown in FIG. I have.
　リミットスイッチ６０は、筐体３０に対して表示ユニット１０が最も離れる位置（前述の最離反位置）を規定するものであり、この実施形態では、第１位置調整部５０ａに設けられている。具体的に、リミットスイッチ６０は、対向プレート３１の収容部１３（プレート部１３１）に向く面に固定されている。また、リミットスイッチ６０は、図６に示すように、β方向において第１スライダＳ１と対向する位置に設けられ、スライダ５２ａが－β方向に移動していくと第１スライダＳ１に接触し、接触したことを示す検出信号を制御部７０に供給する。制御部７０は、当該検出信号を取得した際の表示ユニット１０の位置を原点とし、表示ユニット１０の駆動制御を行う。なお、リミットスイッチ６０は、第１位置調整部５０ａと第２位置調整部５０ｂのいずれかに設けられていればよく、第２位置調整部５０ｂにのみ設けられていてもよい。
　なお、リミットスイッチ６０が機械スイッチである例を示したが、他の要素が適用されてもよい。リミットスイッチ６０は、筐体３０に対して表示ユニット１０が最も離れる位置を規定できる要素である、フォトインタラプタ，エンコーダ，磁気スイッチ等の要素で構成されていても良い。また，リミットスイッチ６０は、モータＭに生じる逆起電力に基づいて、表示ユニットの位置を検出しても良い。 The limit switch 60 defines a position where the display unit 10 is farthest from the housing 30 (the above-mentioned farthest position), and is provided in the first position adjusting unit 50a in this embodiment. Specifically, the limit switch 60 is fixed to the surface of the facing plate 31 facing the accommodating portion 13 (plate portion 131). Further, as shown in FIG. 6, the limit switch 60 is provided at a position facing the first slider S1 in the β direction, and when the slider 52a moves in the −β direction, it contacts and contacts the first slider S1. A detection signal indicating that the operation has been performed is supplied to the control unit 70. The control unit 70 performs drive control of the display unit 10 with the position of the display unit 10 when the detection signal is acquired as the origin. The limit switch 60 may be provided in either the first position adjusting unit 50a or the second position adjusting unit 50b, and may be provided only in the second position adjusting unit 50b.
Although the example in which the limit switch 60 is a mechanical switch is shown, other elements may be applied. The limit switch 60 may be composed of elements such as a photo interrupter, an encoder, and a magnetic switch, which are elements that can define the position where the display unit 10 is most distant from the housing 30. Further, the limit switch 60 may detect the position of the display unit based on the counter electromotive force generated in the motor M.
　図３に模式的に示す制御部７０は、ＨＵＤ装置１００の全体動作を制御するものであり、ＣＰＵ（Central Processing Unit）、ＲＯＭ（Read Only Memory）、ＲＡＭ（Random Access Memory）等を有するマイクロコンピュータから構成される。ＲＯＭには、ＨＵＤ装置１００の全体動作を制御するための動作プログラムや、表示部１１が表示する画像（つまり、虚像Ｖとして視認される画像）を構成するために必要な画像パーツデータ等の固定データが記憶されている。制御部７０は、図示しない表示用の駆動回路を介して、表示部１１による画像の表示動作を制御する。なお、制御部７０は、画像記憶専用のビデオメモリを有していてもよい。また、制御部７０の機能は、複数のマイクロコンピュータが協働することで実現されてもよい。制御部７０は、例えば、収容部１３又は筐体３０における任意の位置に設けられている。 The control unit 70 schematically shown in FIG. 3 controls the overall operation of the HUD device 100, and is a microcomputer having a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), and the like. Consists of. In the ROM, an operation program for controlling the overall operation of the HUD device 100 and image parts data necessary for configuring an image displayed by the display unit 11 (that is, an image visually recognized as a virtual image V) are fixed. The data is stored. The control unit 70 controls the image display operation by the display unit 11 via a display drive circuit (not shown). The control unit 70 may have a video memory dedicated to image storage. Further, the function of the control unit 70 may be realized by the cooperation of a plurality of microcomputers. The control unit 70 is provided at an arbitrary position in, for example, the accommodating unit 13 or the housing 30.
　また、制御部７０は、図示しない位置調整用の駆動回路を介して位置調整部５０を駆動し、筐体３０に対する表示ユニット１０の位置を調整する。所定位置にある表示ユニット１０が筐体３０に近づくと、虚像Ｖは、表示ユニット１０が当該所定位置にあった場合よりもユーザ４の近くに表示される。一方、所定位置にある表示ユニット１０が筐体３０から遠ざかると、虚像Ｖは、表示ユニット１０が当該所定位置にあった場合よりもユーザ４から遠くに表示される。 Further, the control unit 70 drives the position adjustment unit 50 via a drive circuit for position adjustment (not shown), and adjusts the position of the display unit 10 with respect to the housing 30. When the display unit 10 in the predetermined position approaches the housing 30, the virtual image V is displayed closer to the user 4 than when the display unit 10 is in the predetermined position. On the other hand, when the display unit 10 at the predetermined position moves away from the housing 30, the virtual image V is displayed farther from the user 4 than when the display unit 10 is at the predetermined position.
　この実施形態では、制御部７０は、第１位置調整部５０ａが有するモータＭ、及び、第２位置調整部５０ｂが有するモータ（図示せず）の各々を同一の駆動信号で駆動する。このように、第１位置調整部５０ａ及び第２位置調整部５０ｂを、共通の駆動信号で駆動することで、簡潔な制御で、第１位置調整部５０ａ及び第２位置調整部５０ｂのアライメントをとること（つまり、第１位置調整部５０ａ及び第２位置調整部５０ｂが協調し、安定した動作で表示ユニット１０を駆動すること）ができる。なお、制御部７０は、第１位置調整部５０ａが有するモータＭ、及び、第２位置調整部５０ｂが有するモータ（図示せず）の各々を、互いに同期された駆動信号で駆動してもよい。 In this embodiment, the control unit 70 drives each of the motor M included in the first position adjusting unit 50a and the motor (not shown) included in the second position adjusting unit 50b with the same drive signal. In this way, by driving the first position adjusting unit 50a and the second position adjusting unit 50b with a common drive signal, the alignment of the first position adjusting unit 50a and the second position adjusting unit 50b can be performed with simple control. (That is, the first position adjusting unit 50a and the second position adjusting unit 50b cooperate to drive the display unit 10 with stable operation). The control unit 70 may drive each of the motor M included in the first position adjusting unit 50a and the motor (not shown) included in the second position adjusting unit 50b with drive signals synchronized with each other. ..
　また、制御部７０は、操作部、ＥＣＵ（Electronic Control Unit）等の車両１内で構成される図示しない各種のシステムと公知の手法により通信を行う。操作部は、ボタン、タッチパッド、タッチパネル等の入力装置からなる。操作部は、ユーザ４による操作を受け付け、受け付けた内容を示す信号を制御部７０に供給する。ユーザ４は、操作部を介して、ＨＵＤ装置１００に対する指令を入力することができる。例えば、ユーザ４は、操作部を介して、自身の視点に合った虚像Ｖの表示位置を調整すべく、表示ユニット１０の位置調整操作が可能である。ＥＣＵは、車両１の各部の動作を制御するものである。例えば、制御部７０は、ＥＣＵから、車速等の計測量を含む車両１の状態を示す車両情報を取得する。そして、制御部７０は、ＥＣＵから取得した車両情報を示す画像を虚像Ｖとして表示させることが可能となっている。 Further, the control unit 70 communicates with various systems (not shown) configured in the vehicle 1 such as an operation unit and an ECU (Electronic Control Unit) by a known method. The operation unit includes an input device such as a button, a touch pad, and a touch panel. The operation unit receives an operation by the user 4 and supplies a signal indicating the accepted content to the control unit 70. The user 4 can input a command to the HUD device 100 via the operation unit. For example, the user 4 can perform a position adjustment operation of the display unit 10 in order to adjust the display position of the virtual image V that matches his / her viewpoint via the operation unit. The ECU controls the operation of each part of the vehicle 1. For example, the control unit 70 acquires vehicle information indicating the state of the vehicle 1 including a measured amount such as a vehicle speed from the ECU. Then, the control unit 70 can display an image showing the vehicle information acquired from the ECU as a virtual image V.
　以上の構成からなるＨＵＤ装置１００が、表示ユニット１０を駆動する際の動作を以下に簡潔に説明する。制御部７０は、ユーザ４による位置調整操作に応じて、第１位置調整部５０ａ及び第２位置調整部５０ｂを駆動する。この際、制御部７０は、第１位置調整部５０ａが有するモータＭ、及び、第２位置調整部５０ｂが有するモータ（図示せず）を同一の駆動信号、又は、互いに同期された駆動信号で駆動する。供給された駆動信号に応じて第１位置調整部５０ａのモータＭが回転すると、モータＭの回転に応じて、リードスクリューＮがβ方向に沿って直線移動する。リードスクリューＮの直線移動は、ボールジョイント５５ａ及び伝達部５４を介して、プレート部１３１に伝達される。第２位置調整部５０ｂも同様に動作する。これにより、筐体３０に対して収容部１３（つまり、表示ユニット１０）がβ方向に移動する。制御部７０は、β方向の移動量及び向きを制御することにより、筐体３０に対する表示ユニット１０の位置を調整する。 The operation when the HUD device 100 having the above configuration drives the display unit 10 will be briefly described below. The control unit 70 drives the first position adjustment unit 50a and the second position adjustment unit 50b in response to the position adjustment operation by the user 4. At this time, the control unit 70 uses the same drive signal for the motor M of the first position adjustment unit 50a and the motor (not shown) of the second position adjustment unit 50b, or a drive signal synchronized with each other. Drive. When the motor M of the first position adjusting unit 50a rotates according to the supplied drive signal, the lead screw N linearly moves along the β direction according to the rotation of the motor M. The linear movement of the lead screw N is transmitted to the plate portion 131 via the ball joint 55a and the transmission portion 54. The second position adjusting unit 50b operates in the same manner. As a result, the accommodating portion 13 (that is, the display unit 10) moves in the β direction with respect to the housing 30. The control unit 70 adjusts the position of the display unit 10 with respect to the housing 30 by controlling the movement amount and the direction in the β direction.
　なお、本発明は以上の実施形態及び図面によって限定されるものではない。本発明の要旨を変更しない範囲で、適宜、変更（構成要素の削除も含む）を加えることが可能である。 The present invention is not limited to the above embodiments and drawings. Changes (including deletion of components) can be made as appropriate without changing the gist of the present invention.
　以上の説明では、第１位置調整部５０ａ及び第２位置調整部５０ｂの双方に設けた駆動部５３ａ，５３ｂを駆動して、表示ユニット１０を移動させる構成を示したが、位置調整部５０の構成はこれに限られない。例えば、第１位置調整部５０ａ及び第２位置調整部５０ｂの一方にのみ駆動部を設ける構成を採用してもよい。 In the above description, the configuration of driving the drive units 53a and 53b provided in both the first position adjustment unit 50a and the second position adjustment unit 50b to move the display unit 10 is shown, but the position adjustment unit 50 is described. The configuration is not limited to this. For example, a configuration may be adopted in which the drive unit is provided only on one of the first position adjustment unit 50a and the second position adjustment unit 50b.
　以上の説明では、設計上の理由により、図６に示すように、伝達部５４ａを、第１スライダＳ１が固定される台座部１３１ａに固定する例を示したが、伝達部５４ａの固定箇所は、これに限られない。表示ユニット１０を安定して駆動する観点からは、伝達部５４ａの固定箇所は、β方向における第１スライダＳ１と第２スライダＳ２の中間位置であることが好ましい。 In the above description, for design reasons, as shown in FIG. 6, an example of fixing the transmission portion 54a to the pedestal portion 131a to which the first slider S1 is fixed is shown, but the fixing location of the transmission portion 54a is shown. , Not limited to this. From the viewpoint of stably driving the display unit 10, it is preferable that the fixed portion of the transmission unit 54a is an intermediate position between the first slider S1 and the second slider S2 in the β direction.
　以上では、弾性部４０が発泡ウレタンから形成された例を示したが、表示ユニット１０が可動範囲Ｒ内で移動しても、第１開口部Ｈ１と第２開口部Ｈ２とを接続した状態を維持することができる限りにおいては、弾性部４０の構成は任意である。例えば、第１開口部Ｈ１と第２開口部Ｈ２とを接続する筒状の弾性部４０は、発泡ウレタン以外のスポンジ材、蛇腹部材、ゴムを含むエラストマー等から構成されていてもよい。 In the above, an example in which the elastic portion 40 is formed of urethane foam is shown, but even if the display unit 10 moves within the movable range R, the state in which the first opening H1 and the second opening H2 are connected is maintained. The configuration of the elastic portion 40 is arbitrary as long as it can be maintained. For example, the tubular elastic portion 40 connecting the first opening H1 and the second opening H2 may be made of a sponge material other than urethane foam, a bellows member, an elastomer containing rubber, or the like.
　ＨＵＤ装置１００内における光学系の構成は、表示ユニット１０からの表示光Ｌを反射部２０によって、外部の透光部材の一例であるウインドシールド３に向けて反射させることができれば任意である。以上の説明では、位置調整部５０が表示ユニット１０を筐体３０に対してβ方向に移動させる例を示したが、位置調整部５０による表示ユニット１０の移動方向は任意である。なお、表示ユニット１０の移動方向は、表示ユニット１０から反射部２０（上記実施形態の例では鏡２１）へ向かう表示光Ｌの中心光線の向きと一致していることが好ましい。また、筐体３０の第２開口部Ｈ２と表示ユニット１０の第１開口部Ｈ１は、表示ユニット１０の移動方向において互いに対向していればよい。 The configuration of the optical system in the HUD device 100 is arbitrary as long as the display light L from the display unit 10 can be reflected by the reflecting unit 20 toward the windshield 3 which is an example of the external translucent member. In the above description, the position adjusting unit 50 moves the display unit 10 in the β direction with respect to the housing 30, but the moving direction of the display unit 10 by the position adjusting unit 50 is arbitrary. It is preferable that the moving direction of the display unit 10 coincides with the direction of the central light beam of the display light L toward the reflection unit 20 (mirror 21 in the example of the above embodiment) from the display unit 10. Further, the second opening H2 of the housing 30 and the first opening H1 of the display unit 10 may face each other in the moving direction of the display unit 10.
　以上では、表示ユニット１０の表示部１１が液晶パネルからなる例を示したが、表示部１１及び表示ユニット１０の構成は限定されるものでなく任意である。例えば、表示ユニット１０が備える表示部１１は、ＯＬＥＤ（Organic Light-Emitting Diode）から構成されていてもよい。また、表示ユニット１０は、ＤＭＤ（Digital Micromirror Device）と、ＤＭＤによる反射光を受けて画像を表示する透過型スクリーンからなる表示部１１と、を備えて構成されていてもよい。 In the above, the example in which the display unit 11 of the display unit 10 is composed of a liquid crystal panel is shown, but the configuration of the display unit 11 and the display unit 10 is not limited and is arbitrary. For example, the display unit 11 included in the display unit 10 may be composed of an OLED (Organic Light-Emitting Diode). Further, the display unit 10 may be configured to include a DMD (Digital Micromirror Device) and a display unit 11 including a transmissive screen that receives reflected light from the DMD and displays an image.
　ＨＵＤ装置１００をユーザ４に向けて反射する透光部材は、車両１のウインドシールド３に限定されず、板状のハーフミラー、ホログラム素子等により構成されるコンバイナであってもよい。 The translucent member that reflects the HUD device 100 toward the user 4 is not limited to the windshield 3 of the vehicle 1, and may be a combiner composed of a plate-shaped half mirror, a hologram element, or the like.
　ＨＵＤ装置１００が搭載される車両１の種類は限定されず、自動四輪車や、自動二輪車など様々な車両に適用可能である。また、ＨＵＤ装置１００は、航空機、船舶、スノーモービル等、車両１以外の乗り物に搭載されてもよい。 The type of vehicle 1 on which the HUD device 100 is mounted is not limited, and can be applied to various vehicles such as motorcycles and motorcycles. Further, the HUD device 100 may be mounted on a vehicle other than the vehicle 1, such as an aircraft, a ship, and a snowmobile.
（１）以上に説明したＨＵＤ装置１００は、筐体３０に対する表示ユニット１０のβ方向に沿う位置を調整する位置調整部５０を備える。位置調整部５０は、筐体３０に対して不動なレール５１ａと、収容部１３に対して不動なスライダ部５２ａと、スライダ部５２ａをβ方向（所定方向の一例）に沿って移動させる駆動部５３ａと、を備える。スライダ部５２ａは、レール５１ａに嵌め合わされ、β方向に互いに間隔を空けて配置された第１スライダＳ１及び第２スライダＳ２を有する。この構成によれば、光源１２ａと表示部１１の相対位置を変化させずに、表示ユニット１０全体を移動させることができるため、照明仕様の変化を抑制しつつ虚像の表示位置を調整することができる。また、β方向に互いに間隔を空けて配置された第１スライダＳ１及び第２スライダＳ２により、筐体３０に対する表示ユニット１０のγ軸周りの回転方向、及び、α方向のガタつきを抑制し、安定して表示ユニット１０を移動させることができる。 (1) The HUD device 100 described above includes a position adjusting unit 50 that adjusts a position of the display unit 10 with respect to the housing 30 along the β direction. The position adjusting unit 50 is a driving unit that moves the rail 51a, which is immovable with respect to the housing 30, the slider unit 52a, which is immovable with respect to the accommodating unit 13, and the slider unit 52a along the β direction (an example in a predetermined direction). 53a and. The slider portion 52a has a first slider S1 and a second slider S2 that are fitted to the rail 51a and arranged at intervals in the β direction. According to this configuration, the entire display unit 10 can be moved without changing the relative positions of the light source 12a and the display unit 11, so that the display position of the virtual image can be adjusted while suppressing the change in the lighting specifications. can. Further, the first slider S1 and the second slider S2 arranged at intervals in the β direction suppress the rotation direction of the display unit 10 with respect to the housing 30 around the γ axis and the rattling in the α direction. The display unit 10 can be moved stably.
（２）また、第１スライダＳ１及び第２スライダＳ２は、各々、レール５１ａの幅方向（γ方向）においてレール５１ａを挟み込む形状を有する。この構成によれば、前述の通り、筐体３０に対する表示ユニット１０のγ方向のガタつきを抑制することができ、より安定して表示ユニット１０を移動させることができる。 (2) Further, the first slider S1 and the second slider S2 each have a shape that sandwiches the rail 51a in the width direction (γ direction) of the rail 51a. According to this configuration, as described above, rattling of the display unit 10 in the γ direction with respect to the housing 30 can be suppressed, and the display unit 10 can be moved more stably.
（３）また、駆動部５３ａは、リードスクリューＮをβ方向に移動させるモータＭを有し、位置調整部５０は、収容部１３のプレ－ト部１３１に固定されるとともに、リードスクリューＮの動力をプレート部１３１に伝達する伝達部５４ａをさらに備える。そして、リードスクリューＮと伝達部５４ａとは、ボールジョイント５５ａを介して連結されている。この構成によれば、前述の通り、β方向に高い剛性を保ちリードスクリューＮと伝達部５４ａを連結しつつ、点Ｃを中心とした回転方向のアライメントずれを吸収することができる。 (3) Further, the drive unit 53a has a motor M for moving the lead screw N in the β direction, and the position adjusting unit 50 is fixed to the plate unit 131 of the accommodating unit 13 and of the lead screw N. Further, a transmission unit 54a for transmitting power to the plate unit 131 is provided. The lead screw N and the transmission portion 54a are connected to each other via a ball joint 55a. According to this configuration, as described above, it is possible to absorb the misalignment in the rotation direction centered on the point C while maintaining high rigidity in the β direction and connecting the lead screw N and the transmission portion 54a.
（４）また、位置調整部５０は、一対あり、一方を第１位置調整部５０ａとし、他方を第２位置調整部５０ｂとすると、第１位置調整部５０ａが有するモータＭ、及び、第２位置調整部５０ｂが有するモータは、同一の信号、又は、互いに同期された信号で駆動される。この構成によれば、前述の通り、簡潔な制御で、第１位置調整部５０ａ及び第２位置調整部５０ｂのアライメントをとることができる。 (4) Further, if there is a pair of position adjusting units 50, one of which is the first position adjusting unit 50a and the other of which is the second position adjusting unit 50b, the motor M of the first position adjusting unit 50a and the second position adjusting unit 50a. The motor included in the position adjusting unit 50b is driven by the same signal or a signal synchronized with each other. According to this configuration, as described above, the first position adjusting unit 50a and the second position adjusting unit 50b can be aligned with simple control.
（５）また、ＨＵＤ装置１００は、筐体３０に対して表示ユニット１０が最も離れる位置を規定するリミットスイッチ６０をさらに備える。リミットスイッチ６０は、第１位置調整部５０ａと第２位置調整部５０ｂのいずれかに設けられている。この構成によれば、簡潔な構成で、第１位置調整部５０ａ及び第２位置調整部５０ｂのアライメントをとることができる。 (5) Further, the HUD device 100 further includes a limit switch 60 that defines a position where the display unit 10 is farthest from the housing 30. The limit switch 60 is provided in either the first position adjusting unit 50a or the second position adjusting unit 50b. According to this configuration, the first position adjusting unit 50a and the second position adjusting unit 50b can be aligned with a simple configuration.
　以上の説明では、本発明の理解を容易にするために、公知の技術的事項の説明を適宜省略した。 In the above description, in order to facilitate the understanding of the present invention, the description of known technical matters has been omitted as appropriate.
　１００…ヘッドアップディスプレイ（ＨＵＤ）装置
　１０…表示ユニット
　１１…表示部
　１２…照明部、１２ａ…光源、１２ｂ…レンズ、１２ｃ…ライトボックス
　１３…収容部、Ｈ１…第１開口部
　１３０…本体部
　１３１，１３２…プレート部、１３１ａ，１３１ｂ…台座部
　２０…反射部
　３０…筐体
　３０ａ…メインケース、３０ｂ…底部、Ｈ２…第２開口部
　３１，３２…対向プレート、３１ａ…モータ固定部、Ｇ１，Ｇ２…ガイド孔
　４０…弾性部
　５０…位置調整部
　５０ａ…第１位置調整部，５０ｂ…第２位置調整部
　５１ａ…レール
　５２ａ…スライダ部、Ｓ１…第１スライダ、Ｓ２…第２スライダ
　５３ａ…駆動部、Ｍ…モータ、Ｎ…リードスクリュー
　５４ａ…伝達部、５４０…台部、５４１，５４２…脚部
　５５ａ…ボールジョイント
　６０…リミットスイッチ
　７０…制御部
　１…車両、２…ダッシュボード、３…ウインドシールド、４…ユーザ
　Ｌ…表示光、Ｖ…虚像 100 ... Head-up display (HUD) device 10 ... Display unit 11 ... Display unit 12 ... Lighting unit, 12a ... Light source, 12b ... Lens, 12c ... Light box 13 ... Housing unit, H1 ... First opening 130 ... Main body unit 131 , 132 ... Plate part, 131a, 131b ... Pedestal part 20 ... Reflection part 30 ... Housing 30a ... Main case, 30b ... Bottom, H2 ... Second opening 31, 32 ... Opposing plate, 31a ... Motor fixing part, G1, G2 ... Guide hole 40 ... Elastic part 50 ... Position adjustment part 50a ... First position adjustment part, 50b ... Second position adjustment part 51a ... Rail 52a ... Slider part, S1 ... First slider, S2 ... Second slider 53a ... Drive Section, M ... Motor, N ... Lead screw 54a ... Transmission section, 540 ... Base section, 541,542 ... Leg section 55a ... Ball joint 60 ... Limit switch 70 ... Control section 1 ... Vehicle, 2 ... Dashboard, 3 ... Wind Shield, 4 ... User L ... Display light, V ... Virtual image

Claims (5)

  1. 　光源、前記光源が発した光に基づいて表示光を放射する表示部、及び、前記表示光が通過する第１開口部が形成され、前記光源及び前記表示部を収容する収容部を有する表示ユニットと、
    　前記第１開口部と対向する第２開口部を有し、前記第２開口部から内部に入射した前記表示光を外部の透光部材に向けて反射させる反射部を収容する筐体と、
    　前記筐体に対する前記表示ユニットの所定方向に沿う位置を調整する位置調整部と、を備え、
    　前記位置調整部は、
    　前記筐体に対して不動であり、前記所定方向に延びるレールと、
    　前記収容部に対して不動であり、前記レールに嵌め合わされるとともに、前記レールに沿ってスライド可能なスライダ部と、
    　前記収容部及び前記スライダ部を前記所定方向に沿って移動させる駆動部と、を備え、
    　前記スライダ部は、前記所定方向に互いに間隔を空けて配置された第１スライダ及び第２スライダを有する、
    　ヘッドアップディスプレイ装置。     A display unit having a light source, a display unit that emits display light based on the light emitted by the light source, and a first opening through which the display light passes, and having an accommodating unit for accommodating the light source and the display unit. When,
    A housing having a second opening facing the first opening and accommodating a reflecting portion that reflects the display light incident inside from the second opening toward an external translucent member.
    A position adjusting unit for adjusting a position of the display unit along a predetermined direction with respect to the housing is provided.
    The position adjustment unit is
    A rail that is immovable with respect to the housing and extends in the predetermined direction,
    A slider portion that is immovable with respect to the accommodating portion, is fitted to the rail, and can slide along the rail.
    A drive unit for moving the accommodating portion and the slider portion along the predetermined direction is provided.
    The slider portion has a first slider and a second slider arranged so as to be spaced apart from each other in the predetermined direction.
    Head-up display device.
  2. 　前記第１スライダ及び前記第２スライダは、各々、前記レールの幅方向において前記レールを挟み込む形状を有する、
    　請求項１に記載のヘッドアップディスプレイ装置。     The first slider and the second slider each have a shape that sandwiches the rail in the width direction of the rail.
    The head-up display device according to claim 1.
  3. 　前記収容部は、前記スライダ部が固定されるプレート部を有し、
    　前記駆動部は、リードスクリューを前記所定方向に移動させるモータを有し、
    　前記位置調整部は、前記プレ－ト部に固定されるとともに、前記リードスクリューの動力を前記プレート部に伝達する伝達部をさらに備え、
    　前記リードスクリューと前記伝達部とは、ボールジョイントを介して連結されている、
    　請求項１又は２に記載のヘッドアップディスプレイ装置。     The accommodating portion has a plate portion to which the slider portion is fixed.
    The drive unit has a motor that moves the lead screw in the predetermined direction.
    The position adjusting portion is fixed to the plate portion and further includes a transmission portion that transmits the power of the lead screw to the plate portion.
    The lead screw and the transmission portion are connected via a ball joint.
    The head-up display device according to claim 1 or 2.
  4. 　前記位置調整部は、一対あり、一方を第１位置調整部とし、他方を第２位置調整部とすると、
    　前記第１位置調整部が有する前記モータ、及び、前記第２位置調整部が有する前記モータは、同一の信号、又は、互いに同期された信号で駆動される、
    　請求項３に記載のヘッドアップディスプレイ装置。     It is assumed that there is a pair of the position adjusting portions, one of which is the first position adjusting portion and the other of which is the second position adjusting portion.
    The motor included in the first position adjusting unit and the motor included in the second position adjusting unit are driven by the same signal or a signal synchronized with each other.
    The head-up display device according to claim 3.
  5. 　前記筐体に対して前記表示ユニットが最も離れる位置を規定するリミットスイッチをさらに備え、
    　前記リミットスイッチは、前記第１位置調整部と前記第２位置調整部のいずれかに設けられている、
    　請求項４に記載のヘッドアップディスプレイ装置。     Further, a limit switch for defining the position where the display unit is farthest from the housing is provided.
    The limit switch is provided in either the first position adjusting section or the second position adjusting section.
    The head-up display device according to claim 4.
PCT/JP2021/019598 2020-05-25 2021-05-24 Head-up display device WO2021241495A1 (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05147456A (en) * 1991-11-27 1993-06-15 Nippon Seiki Co Ltd Display device for vehicle
JP2003175744A (en) * 2001-12-12 2003-06-24 Denso Corp Head up display
WO2016117312A1 (en) * 2015-01-22 2016-07-28 株式会社デンソー Head-up display device
JP2019203528A (en) * 2018-05-22 2019-11-28 アルパイン株式会社 Guide drive device and display device using guide drive device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05147456A (en) * 1991-11-27 1993-06-15 Nippon Seiki Co Ltd Display device for vehicle
JP2003175744A (en) * 2001-12-12 2003-06-24 Denso Corp Head up display
WO2016117312A1 (en) * 2015-01-22 2016-07-28 株式会社デンソー Head-up display device
JP2019203528A (en) * 2018-05-22 2019-11-28 アルパイン株式会社 Guide drive device and display device using guide drive device

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