JP6602104B2 - Head-up display device - Google Patents

Description

  The present invention relates to a head-up display device.

  Conventionally, a head-up display device that displays an image superimposed on a scene in front of the vehicle is known. Among these, the combiner-type head-up display device causes the user to visually recognize the image as a virtual image by reflecting the image on a combiner such as a concave half mirror.

  In this type of head-up display device, in order to prevent the combiner from entering the user's field of view when not in use, it is considered that the combiner is provided with a drive mechanism and the combiner is tilted and stored when not in use. Yes.

  Further, when the collapsed combiner is exposed to the outside, the combiner may be damaged, or sunlight may be reflected on the combiner and enter the user's field of view. Thus, a head-up display device has been proposed that includes a lid that covers the collapsed combiner from above (see, for example, Patent Document 1).

JP 2006-062501 A

  However, when it is set as the structure provided with a cover body, there exists a possibility that an apparatus may enlarge when the movable range and storage space of a cover body are ensured.

  This invention is made | formed in view of the above, Comprising: It aims at providing the head-up display apparatus which can cover a combiner with a cover body, suppressing the enlargement of an apparatus.

  In order to solve the above-described problems and achieve the object, a head-up display device according to the present invention includes a display unit, a combiner, a reflecting unit, and a lid. The display unit emits display light. The combiner is movable between a use state where the display surface is raised and a storage state where the display surface is tilted, and reflects a display light on the display surface to display a virtual image. The reflection part reflects the display light emitted from the display part and enters the combiner. The lid body is provided integrally with the reflecting portion, and includes an incident state in which the reflecting portion is disposed on the optical path of the display light and the display light is incident on the combiner in use, and a cover state that covers the combiner in the storage state. It can be moved between.

  ADVANTAGE OF THE INVENTION According to this invention, a combiner can be covered with a cover body, suppressing the enlargement of an apparatus.

FIG. 1 is a diagram illustrating an installation place of the head-up display device according to the first embodiment. FIG. 2 is a schematic cross-sectional view of the head-up display device according to the first embodiment in use. FIG. 3 is a diagram illustrating an optical path of display light in the usage state of the head-up display device according to the first embodiment. FIG. 4 is a schematic cross-sectional view of the head-up display device according to the first embodiment in the housed state. FIG. 5 is a diagram illustrating a configuration example of a head-up display device in which a lid and a reflection unit are configured separately. FIG. 6 is a diagram illustrating a configuration example of a head-up display device in which a lid and a reflection unit are configured separately. FIG. 7 is a diagram illustrating the configuration of the combiner and the drive unit of the lid. FIG. 8 is a diagram illustrating a configuration of a combiner and a lid drive unit according to a first modification of the first embodiment. FIG. 9 is a diagram illustrating a configuration of a combiner and a lid driving unit according to a second modification of the first embodiment. FIG. 10 is a diagram illustrating a configuration of a combiner and a lid driving unit according to a second modification of the first embodiment. FIG. 11 is a diagram illustrating a configuration of a combiner and a lid drive unit according to a second modification of the first embodiment. FIG. 12 is a diagram illustrating a configuration example of the detection unit. FIG. 13 is a schematic cross-sectional view of the head-up display device according to the second embodiment in use. FIG. 14 is a diagram illustrating an optical path of display light in a usage state of the head-up display device according to the second embodiment. FIG. 15 is a diagram illustrating a state in which the head-up display device according to the second embodiment shifts from a use state to a storage state. FIG. 16 is a schematic cross-sectional view of the head-up display device according to the second embodiment in the housed state. FIG. 17 is a perspective view of the head-up display device according to the second embodiment in use. FIG. 18 is a perspective view of the head-up display device according to the second embodiment in the housed state. FIG. 19 is a diagram illustrating a configuration example of a head-up display device including a lid body in which the lid body is not divided. FIG. 20 is a schematic cross-sectional view of the head-up display device according to a modification example of the second embodiment in use. FIG. 21 is a schematic cross-sectional view of the head-up display device according to the third embodiment in the housed state. FIG. 22 is a diagram illustrating a state in which the head-up display device according to the third embodiment shifts from the housed state to the used state. FIG. 23 is a schematic cross-sectional view of the head-up display device according to the third embodiment in use.

  Hereinafter, embodiments of a head-up display device according to the present invention will be described in detail with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

(First embodiment)
FIG. 1 is a diagram illustrating an installation place of the head-up display device according to the first embodiment. In the following, in order to clarify the positional relationship, the X-axis direction, the Y-axis direction, and the Z-axis direction that are orthogonal to each other are defined, and the positive direction of the Z-axis is the vertically upward direction. The Y axis positive direction is the front.

  As shown in FIG. 1, the head-up display device 1 according to the first embodiment includes a housing 10 and a combiner 20. The casing 10 is embedded in the dashboard D of the vehicle, and the combiner 20 is exposed at the upper part of the dashboard D when in use.

  The housing 10 contains a display unit that displays an image and emits display light, and a reflection unit that reflects the display light emitted from the display unit and enters the combiner 20.

  The image provided by the head-up display device 1 appears as a virtual image on the back side (front side of the vehicle) from the combiner 20 as viewed from the driver seated on the seat S. Thus, the driver can check the image appearing as a virtual image and obtain various information without moving the line of sight greatly while looking in front of the vehicle during driving. The head-up display device 1 can display information necessary for the driver, such as vehicle speed and route guidance.

  For example, the power of the head-up display device 1 is turned on in conjunction with turning on of the ACC switch of the vehicle, and the power is turned off in conjunction with turning off of the ACC switch of the vehicle.

  The combiner 20 is configured to be rotatable between a use state in which the display surface is raised and a storage state in which the display surface is tilted. The combiner 20 is displaced from the use state to the storage state in conjunction with the ACC switch being turned off, for example. Thereby, the combiner 20 can be prevented from entering the driver's field of view when not in use.

  Moreover, the head-up display device 1 according to the first embodiment includes a lid body 30 that covers the combiner 20 in the housed state. Thereby, it is possible to prevent the combiner 20 in the housed state from being damaged or sunlight from being reflected on the combiner 20 and entering the driver's field of view.

  However, when the combiner is configured to be covered with a lid, the apparatus may be increased in size by securing the movable range and storage location of the lid (details of this point will be described later).

  Therefore, in the head-up display device 1 according to the first embodiment, the reflection unit disposed inside the housing 10 is integrated with the lid body, and the lid body and the reflection unit are integrally rotated. Therefore, it was decided to suppress the enlargement of the apparatus. Below, the structure of the head-up display apparatus 1 which concerns on this 1st Embodiment is demonstrated concretely with reference to FIGS.

  FIG. 2 is a schematic cross-sectional view of the head-up display device 1 according to the first embodiment in use. FIG. 3 is a diagram illustrating an optical path of display light in the usage state of the head-up display device 1 according to the first embodiment. FIG. 4 is a schematic cross-sectional view of the head-up display device 1 according to the first embodiment in the housed state.

  As shown in FIG. 2, the head-up display device 1 includes a housing 10, a combiner 20, a lid 30, a display unit 40, and a reflection unit 50.

  The housing 10 is a box that houses the combiner 20, the lid 30, the display unit 40, and the reflection unit 50, and has an opening 11 at the top.

  The combiner 20 is disposed on the front side (Y-axis positive direction side) of the housing 10. The combiner 20 includes a combiner main body 21 and a combiner holder 22. The combiner main body 21 is a transparent member capable of reflecting light and has an image display surface 21a. As the combiner main body 21, for example, a concave half mirror can be used.

  The combiner holder 22 holds the combiner main body 21 rotatably. Specifically, the combiner holder 22 has a first rotating shaft 22a extending along the X-axis direction, and rotates the held combiner main body 21 around the first rotating shaft 22a. Thereby, the combiner main body 21 is displaced between the use state (refer FIG. 2) which raised the display surface 21a, and the accommodation state (refer FIG. 4) which fell the display surface 21a.

  The head-up display device 1 includes a driving unit that rotates the combiner holder 22 around the first rotation shaft 22a. Such driving means will be described later.

  The lid 30 is disposed on the rear side (Y-axis negative direction side) of the housing 10. Thus, the lid 30 is disposed on the opposite side of the housing 10 from the side on which the combiner 20 is disposed. The lid body 30 includes a lid body 31 and an arm 32.

  The lid main body 31 is a member that covers the combiner main body 21 in the housed state, and is supported by the arm 32 so as to be rotatable around the second rotation shaft 32a. A reflecting portion 50 is attached to the surface of the lid main body 31 on the second rotating shaft 32a side.

  The arm 32 has a second rotating shaft 32a extending along the X-axis direction, and rotates the lid main body 31 and the reflecting portion 50 around the second rotating shaft 32a. As a result, the lid body 31 has an incident state (see FIG. 2) in which display light is incident on the combiner 20 in use by disposing the reflecting unit 50 on the optical path of display light from the display unit 40 to be described later. It is displaced between a cover state (see FIG. 4) covering the upper portion of the combiner 20 in the stored state.

  The head-up display device 1 includes a driving unit that rotates the arm 32 around the second rotation shaft 32a. Such driving means will be described later.

  The lid body 31 has a first contact portion 31a and a second contact portion 31b at the distal end portion and the proximal end portion, respectively. The first contact portion 31 a and the second contact portion 31 b are in contact with a detection unit that detects the rotational position of the lid 30. This point will also be described later.

  The display unit 40 displays an image and emits image display light. As the display unit 40, for example, a display device such as a fluorescent display tube (VFD) or a liquid crystal display (LCD) can be used. In addition, a projector that emits display light such as a DLP (Digital Light Processing) method or an LCOS (Liquid Crystal On Silicon) method may be used as the display unit 40 in combination with a screen that projects an image.

  The reflection unit 50 is, for example, a mirror, and is disposed on the optical path of the display light emitted from the display unit 40 in the incident state (see FIG. 2), and reflects the display light to enter the combiner 20 in the use state ( (See FIG. 3).

  As shown in FIG. 3, the display light of the image provided by the head-up display device 1 is reflected by the reflecting unit 50 and incident on the combiner 20, and then further reflected by the combiner 20 and incident on the eyes of the driver. .

  The driver can visually recognize an image appearing as a virtual image on the back side of the combiner 20. The length of the optical path of the display light from the display unit 40 to the combiner 20 defines the position of the virtual image reflected on the combiner 20. Therefore, by providing the reflection part 50 on the optical path of the display light, the length of the optical path can be adjusted and the virtual image can be arranged at an appropriate position. Further, in the incident state, the entire reflection unit 50 is disposed inside the housing 10, and display light emitted from the display unit 40 is incident on the reflection unit 50. For this reason, even if some abnormality occurs in the housing 10 or the like, the display light emitted from the display unit 40 does not leak directly to the outside of the housing 10, so that the driver visually recognizes the abnormal display light. Can be prevented.

  The head-up display device 1 is configured as described above. For example, when the ACC switch is turned off, the combiner 20 is displaced from the use state (see FIG. 2) to the housed state (see FIG. 4).

  Specifically, as shown in FIG. 4, the head-up display device 1 rotates the combiner holder 22 around the first rotation axis 22a in the first rotation direction (counterclockwise in FIG. 4), The combiner main body 21 is made to enter the inside of the housing 10 to be stored.

  Further, the head-up display device 1 displaces the lid body 30 from the incident state (see FIG. 2) to the cover lid state (see FIG. 4). Specifically, the head-up display device 1 rotates the arm 32 in a second rotation direction (clockwise in FIG. 4) opposite to the first rotation direction.

  As a result, the lid body 31 and the reflecting portion 50 supported by the arm 32 rotate around the second rotation shaft 32a, and the tip portion 31c of the lid body 31 comes into contact with the combiner holder 22 to cover the combiner body 21. The combiner holder 22 has a contact portion 22b that protrudes rearward in the first rotation direction from the combiner main body 21 and contacts the tip end portion 31c of the cover main body 31 in the cover state in the housed state.

  As described above, in the head-up display device 1 according to the first embodiment, the reflector 50 is integrated with the lid 30, and the lid 30 and the reflector 50 are rotationally displaced integrally to cover the combiner main body 21. Therefore, the increase in size of the apparatus can be suppressed. This point will be described with reference to FIGS.

  5 and 6 are diagrams illustrating a configuration example of a head-up display device as a comparative example in which a lid body and a reflection unit are configured separately. 5 shows a schematic cross-sectional view in the use state, and FIG. 6 shows a schematic cross-sectional view in the housed state.

  When the lid 30X and the reflection part 50X are configured separately as in the head-up display device 1X shown in FIGS. 5 and 6, it is necessary to rotate the lid 30X while avoiding the reflection part 50X. As a result, the lid 30X is enlarged (see H1 in FIGS. 5 and 6), and further, a large space is required to accommodate the enlarged lid 30X (see H2 in FIG. 6). The housing 10X is enlarged. As described above, if the lid 30X and the reflecting portion 50X are configured separately, the head-up display device 1X may be increased in size.

  On the other hand, the head-up display device 1 according to the first embodiment covers the combiner main body 21 by integrating the lid body 30 with the reflecting section 50 and rotating the lid body 30 and the reflecting section 50 together. It was. Thereby, when the lid 30 is rotated, it is not necessary to avoid the reflection part 50, and thus the enlargement of the lid 30 can be suppressed. Furthermore, since the enlargement of the lid body 30 is suppressed, the storage space of the lid body 30 is also prevented from being increased, so that the housing 10 is not increased in size.

  Therefore, according to the head-up display device 1 according to the first embodiment, the combiner main body 21 can be covered with the lid body 30 while suppressing an increase in size of the device.

  As shown in FIG. 4, the surface 22 c of the combiner holder 22 exposed to the outside in the housed state is arranged on the same plane as the outer edge part 11 a of the opening 11 of the housing 10 in the housed state. Similarly, the surface 31d of the lid body 31 exposed to the outside in the covered state is also disposed on the same plane as the outer edge portion 11a of the opening 11 of the housing 10 in the covered state. By setting it as such a structure, the designability of the head-up display apparatus 1 can be improved.

  Next, a configuration example of a drive unit that rotationally drives the combiner 20 and the lid body 30 will be described with reference to FIG. FIG. 7 is a diagram illustrating a configuration example of the drive unit of the combiner 20 and the lid 30.

  As shown in FIG. 7, the head-up display device 1 includes a first drive source 61, a second drive source 62, a first transmission mechanism 63, and a second transmission mechanism 64. The first drive source 61 and the second drive source 62 are, for example, motors that can rotate in both forward and reverse directions, and generate a rotational driving force.

  The first transmission mechanism 63 and the second transmission mechanism 64 are constituted by a gear train, for example. The rotational driving force generated by the first drive source 61 is transmitted to the combiner holder 22. The first transmission mechanism 63 includes at least a gear 63a that rotates around the rotation axis of the first drive source 61 and a gear 63b that rotates around the first rotation shaft 22a.

  The second transmission mechanism 64 transmits the rotational driving force generated by the second driving source 62 to the arm 32. The second transmission mechanism 64 includes at least a gear 64a that rotates around the rotation axis of the second drive source 62 and a gear 64b that rotates around the second rotation axis 32a.

  As described above, the head-up display device 1 transmits the rotational driving force generated by the first driving source 61 to the combiner holder 22 by the first transmission mechanism 63, thereby using the combiner 20 in a use state (see FIG. 2). ) And the storage state (see FIG. 4). Similarly, the head-up display device 1 transmits the rotational driving force generated by the second driving source 62 to the arm 32 by the second transmission mechanism 64, so that the lid body 30 and the reflecting unit 50 are in the incident state ( It can be rotationally displaced between the cover state (see FIG. 2) and the cover state (see FIG. 4).

  In the above example, the head-up display device 1 is provided with two drive sources. However, the head-up display device 1 rotates both the combiner 20 and the lid 30 using one drive source. It may be configured. Below, the modification in such a case is demonstrated with reference to FIGS.

  First, a first modification will be described with reference to FIG. FIG. 8 is a diagram illustrating a configuration of the drive unit of the combiner 20 and the lid 30 according to the first modification example of the first embodiment.

  As shown in FIG. 8, the head-up display device 1 may be configured to include one drive source 65, a first transmission mechanism 66, and a second transmission mechanism 67.

  The first transmission mechanism 66 transmits the rotational driving force generated by the driving source 65 to the combiner holder 22 in the same direction as the rotational direction of the driving source 65. On the other hand, the second transmission mechanism 67 transmits the rotational driving force generated by the driving source 65 to the arm 32 in the direction opposite to the rotational direction of the driving source 65. Thereby, the combiner 20 and the cover body 30 can be rotated in the reverse direction using one drive source 65.

  Next, a second modification will be described with reference to FIGS. FIGS. 9-11 is a figure which shows the structure of the drive part of the combiner 20 and the cover body 30 which concern on the 2nd modification in 1st Embodiment. 9 to 11 show the movement until the combiner 20 shifts from the use state to the storage state.

  As shown in FIG. 9, the head-up display device 1 includes one drive source 71, a first transmission mechanism 72, a second transmission mechanism 73, a first conversion unit 74, and a third transmission mechanism 75. The structure provided with these may be sufficient.

  The drive source 71 is disposed on the front side (Y-axis positive direction side) of the housing 10, for example, on the lower part of the combiner 20.

  The third transmission mechanism 75 transmits the rotational driving force of the driving source 71 to the first conversion unit 74. The third transmission mechanism 75 is, for example, a worm gear, and includes a cylindrical worm 75a provided on the rotation shaft of the drive source 71, a worm wheel 75b that contacts the cylindrical worm 75a, and a gear 75c that contacts the worm wheel 75b. . The gear 75 c is in contact with a first tooth row 74 a of the first conversion unit 74 described later, and transmits the rotational driving force from the drive source 71 to the first conversion unit 74.

  The 1st conversion part 74 is a rack gear, for example, and is provided with the 1st tooth row 74a and the 2nd tooth row 74b which are extended in the front-back direction of the housing | casing 10. As shown in FIG. The first tooth row 74a is in contact with the gear 75c of the third transmission mechanism 75, converts the rotational driving force from the driving source 71 into a straight driving force, and moves the first conversion unit 74 straight. The second tooth row 74b is in contact with a second conversion portion 72a of the first transmission mechanism 72 described later, and transmits a straight driving force to the second conversion portion 72a.

  The first transmission mechanism 72 is composed of, for example, a gear train, and at least a second conversion unit 72a that is a gear disposed at a position in contact with the first conversion unit 74 in a use state of the combiner 20, and a first rotation And a gear 72b rotating around the shaft 22a. The first transmission mechanism 72 converts the straight driving force of the first converter 74 into a driving force for moving the combiner 20. In other words, the first transmission mechanism 72 converts the linear driving force of the first conversion unit 74 into a rotational driving force by the second conversion unit 72a and transmits it to the gear 72b, thereby transmitting the combiner 20 to the first rotating shaft 22a. Rotate around.

  The 2nd transmission mechanism 73 has the 3rd conversion part 73a which is a gearwheel rotated around the 2nd rotating shaft 32a. The third conversion unit 73a is disposed at a position away from the first conversion unit 74 when the combiner 20 is in use, and comes into contact with the first conversion unit 74 that has traveled straight, so that the first conversion unit 74 is driven straight. The force is converted into a driving force for moving the lid 30. That is, the third conversion unit 73a converts the rectilinear driving force of the first conversion unit 74 into a rotational driving force to rotate the lid body 30 around the second rotation shaft 32a.

  Note that the second transmission mechanism 73 may be configured by a gear train having a plurality of gears including the third conversion unit 73a.

  When the drive source 71 is rotationally driven in the use state of the combiner 20 shown in FIG. 9, the rotational driving force generated by the drive source 71 is transmitted to the first conversion unit 74 via the third transmission mechanism 75, and The first conversion unit 74 converts the driving force into a straight driving force. The first conversion unit 74 moves straight to the rear side (Y-axis negative direction side) of the housing 10 by the straight drive force, and transmits the straight drive force to the second conversion unit 72a of the first transmission mechanism 72. Then, the second converter 72a converts the straight driving force into the rotational driving force and transmits it to the gear 72b, whereby the combiner 20 rotates around the first rotating shaft 22a (see FIG. 10).

  Subsequently, as shown in FIG. 10, when the first conversion unit 74 approaching by the straight movement moves into contact with the third conversion unit 73 a of the second transmission mechanism 73, the third conversion unit 73 a becomes the first conversion unit. The straight drive force 74 is converted into a rotational drive force. Thereby, as shown in FIG. 11, the cover body 30 rotates around the second rotation axis 32a.

  As described above, in the head-up display device 1, the third conversion unit 73a of the second transmission mechanism 73 is disposed at a position away from the first conversion unit 74 in the use state of the combiner 20, and the combiner 20 is moved from the use state. After the displacement to the storage state is started, the linear conversion driving force of the first conversion unit 74 may be converted into the rotational driving force by coming into contact with the first conversion unit 74 approaching by the linear movement.

  With such a configuration, the operation of starting the rotation of the lid 30 after the combiner 20 starts to rotate can be easily realized by using one drive source 71.

  Next, a configuration example of a detection unit that detects the rotational positions of the combiner 20 and the lid 30 will be described with reference to FIG. FIG. 12 is a diagram illustrating a configuration example of the detection unit.

  As illustrated in FIG. 12, the head-up display device 1 includes a first detection unit 81 and a second detection unit 82 as detection units that detect the rotational position of the lid 30. The first detection unit 81 and the second detection unit 82 are, for example, switches, the first detection unit 81 is in contact with the first contact unit 31a of the combiner 20 in the housed state, and the second detection unit 82 is in use. In contact with the second contact portion 31b of the combiner 20.

  The head-up display device 1 detects that the lid 30 is in the incident state (see FIG. 2) or the cover state (see FIG. 4) based on the detection results of the first detection unit 81 and the second detection unit 82. Thus, the rotation of the lid 30 can be stopped.

  In addition, the head-up display device 1 includes a third detection unit 83 as a detection unit that detects the rotational position of the combiner 20. The 3rd detection part 83 is a rotary sensor, for example, and is provided in the 1st rotating shaft 22a.

  The head-up display device 1 stops the rotation of the combiner 20 by detecting that the combiner 20 is in a use state (see FIG. 2) or a storage state (see FIG. 4) based on the detection result of the third detection unit 83. Can be made. The head-up display device 1 can also adjust the tilt of the combiner 20 using the third detection unit 83 that is a rotary sensor.

  The configuration of the detection unit is not limited to the above example, and a rotary sensor may be used as the detection unit that detects the rotational position of the lid 30, and a switch is used as the detection unit that detects the rotational position of the combiner 20. May be.

  The drive unit described with reference to FIGS. 7 to 11 and the detection unit described with reference to FIG. 12 are also applied to the head-up display device according to the second and third embodiments described later. Is possible.

  As described above, the head-up display device 1 according to the first embodiment includes the display unit 40, the combiner 20, the reflection unit 50, and the lid 30. The display unit 40 emits display light. The combiner 20 can be rotated between a use state in which the display surface 21a is raised and a storage state in which the display surface 21a is tilted, and displays a virtual image by reflecting display light on the display surface 21a. The reflection unit 50 reflects the display light emitted from the display unit 40 and enters the combiner 20. The lid body 30 is provided integrally with the reflection unit 50, and includes an incident state in which the reflection unit 50 is disposed on the optical path of the display light from the display unit 40 and the display light is incident on the combiner 20 in use, and a storage state It is possible to rotate between the cover cover state covering the upper part of the combiner 20.

  Therefore, according to the head-up display device 1 according to the first embodiment, the combiner 20 can be covered with the lid body 30 while suppressing an increase in size of the device.

(Second Embodiment)
Next, the configuration of the head-up display device according to the second embodiment will be described with reference to FIGS. In the following description, parts that are the same as those already described are given the same reference numerals as those already described, and redundant descriptions are omitted.

  FIG. 13 is a schematic cross-sectional view of the head-up display device according to the second embodiment in use. FIG. 14 is a diagram illustrating an optical path of display light in a usage state of the head-up display device according to the second embodiment. FIG. 15 is a diagram illustrating a state in which the head-up display device according to the second embodiment shifts from a use state to a storage state. FIG. 16 is a schematic cross-sectional view of the head-up display device according to the second embodiment in the housed state. FIG. 17 is a perspective view of the head-up display device according to the second embodiment in use. FIG. 18 is a perspective view of the head-up display device according to the second embodiment in the housed state.

  As shown in FIG. 13, the head-up display device 1A according to the second embodiment includes a housing 10A, a combiner 20A, a lid 30A, a display unit 40, a second reflection unit 50A, and a first reflection. Part 90.

  The housing 10A is a box that houses the combiner 20A, the lid 30A, the display unit 40, the second reflecting unit 50A, and the first reflecting unit 90, and has an opening 11A at the top. The combiner 20A and the first reflecting unit 90 are arranged on the front side (Y-axis positive direction side) of the housing 10A, and the lid 30A, the display unit 40, and the second reflecting unit 50A are on the rear side of the housing 10A. (Y-axis negative direction side)

  Further, the housing 10A includes a guide portion 12 that guides a second lid portion 312 described later of the lid 30A. The guide part 12 is a groove part formed on the side surface of the housing 10A, for example.

  The combiner 20A includes a combiner main body 21 and a combiner holder 22A. The combiner holder 22A holds the combiner main body 21 and rotates the held combiner main body 21 around the first rotation shaft 22Aa. Thereby, the combiner main body 21 is displaced between the use state (see FIG. 13) and the storage state (see FIG. 16).

  The combiner holder 22A includes a contact portion 22Ab, a first surface 22Ac, a second surface 22Ad, and a space 22Ae.

  The contact portion 22Ab protrudes rearward from the combiner body 21 in the first rotation direction (counterclockwise in FIG. 13), and contacts the distal end portion 311b of the cover body 31A in the cover state in the housed state (see FIG. 16).

  The first surface 22Ac is a surface exposed in the use state of the combiner 20A. The first surface 22Ac is disposed on the same plane as the inclined surface 13 provided inside the housing 10A when the combiner 20 is in use (see FIG. 17). Thereby, the designability of the head-up display device 1A at the time of use can be improved.

  The second surface 22Ad is a surface exposed when the combiner 20A is stored. The second surface 22Ad is disposed on the same plane as the outer edge portion 11Aa of the opening portion 11A of the housing 10A in the storage state of the combiner 20 (see FIGS. 16 and 18). Thereby, the designability of the head-up display device 1A when not in use can be improved.

  The space 22Ae is a space formed inside the first surface 22Ac and the second surface 22Ad (on the first rotation shaft 22Aa side). The first reflecting unit 90 is disposed in the space 22Ae. As described above, by arranging the first reflecting portion 90 in the space 22Ae that is an empty space of the combiner holder 22A, it is possible to further suppress the increase in size of the housing 10A.

  The lid body 30A includes a lid body 31A and an arm 32A. The lid main body 31 </ b> A includes a first lid part 311 and a second lid part 312.

  The first lid portion 311 is supported by the arm 32A so as to be rotatable around the second rotation shaft 32Aa. The second reflecting portion 50A is attached to the surface of the first lid portion 311 on the second rotating shaft 32Aa side. The first lid portion 311 has a third rotating shaft 311a at the base end, and pivotally supports the second lid portion 312 on the third rotating shaft 311a.

  The second lid portion 312 is rotatably supported on the third rotation shaft 311 a of the first lid portion 311. The second lid portion 312 is displaced along the guide 12 of the housing 10A when the first lid portion 311 rotates.

  As shown in FIGS. 16 and 18, the surfaces 311c and 312a of the first lid portion 311 and the second lid portion 312 exposed to the outside in the covered state are the openings 11A of the housing 10A in the covered state. The outer edge portion 11Aa and the second surface 22Ad of the combiner holder 22A are disposed on the same plane. By setting it as this structure, the designability of 1 A of head-up display apparatuses can be improved.

  The arm 32A rotates the first lid portion 311 and the second reflecting portion 50A around the second rotation axis 32Aa. Accordingly, the lid main body 31A is displaced between the incident state (see FIG. 13) and the cover state (see FIG. 16).

  As shown in FIG. 14, after the display light of the image provided by the head-up display device 1A according to the second embodiment is emitted from the display unit 40, the first reflection unit 90 and the second reflection unit 50A sequentially The light is reflected and enters the combiner 20A, is further reflected by the combiner 20A, and enters the eyes of the driver.

  In the head-up display device 1A configured as described above, as shown in FIG. 15, the second lid portion 312 has a rotation center of the first lid portion 311 with respect to the first lid portion 311. It is guided by the guide part 12 so as to be displaced in a state where it is bent to the side (that is, the second rotating shaft 32Aa side). Thereby, the head-up display device 1A according to the second embodiment can further suppress the enlargement of the housing 10A.

  This point will be described with reference to FIG. FIG. 19 is a diagram illustrating a configuration example of a head-up display device as a comparative example including a lid body in which the lid body is not divided.

  When the lid 30AX is not divided like the head-up display device 1AX shown in FIG. 19, it is necessary to provide a relatively wide space in the casing 10AX in order to avoid interference between the lid 30AX and the casing 10AX. There is. This may increase the size of the head-up display device 1AX (see H3 in FIG. 19).

  In contrast, in the head-up display device 1 </ b> A according to the second embodiment, when the lid body 30 </ b> A is displaced, the second lid body portion 312 has a second rotational axis with respect to the first lid body portion 311. By bending to the 32Aa side, the radius of rotation of the lid 30A can be kept small. Thereby, since the space in housing | casing 10A required in order to avoid interference with cover body 30A and housing | casing 10A can be made small, the enlargement of housing | casing 10A can be suppressed.

  As described above, the head-up display device 1A according to the second embodiment includes the lid body 31A divided into the first lid portion 311 and the second lid portion 312. Can be further suppressed.

  Next, a modification of the head-up display device 1A according to the second embodiment will be described with reference to FIG. FIG. 20 is a schematic cross-sectional view of the head-up display device according to a modification example of the second embodiment in use.

  As shown in FIG. 20, the head-up display device 1 </ b> A ′ according to the modification includes a guide unit 12 </ b> A ′. In the incident state shown in FIG. 20, the guide portion 12A ′ is in the second state so that the second lid portion 312 is bent toward the second rotation shaft 32Aa with respect to the first lid portion 311. The lid body portion 312 is guided.

  Compared to the head-up display device 1A (see FIG. 13) configured so that the first lid part 311 and the second lid part 312 are in a straight line in the incident state by being configured in this way. The housing 10A ′ can be further reduced in size (see H4 in FIG. 20).

(Third embodiment)
Next, the configuration of the head-up display device according to the third embodiment will be described with reference to FIGS. FIG. 21 is a schematic cross-sectional view of the head-up display device according to the third embodiment in the housed state. FIG. 22 is a diagram illustrating a state where the head-up display device according to the third embodiment shifts from the housed state to the used state. FIG. 23 is a schematic cross-sectional view of the head-up display device according to the third embodiment in use.

  As shown in FIG. 21, the head-up display device 1B according to the third embodiment includes a housing 10B, a separate lid 35, a combiner 20B, a lid 30B, a display unit 40, and a second reflecting unit 50B. And a first reflecting portion 90B.

  The housing 10B is a box that houses the combiner 20B, the separate lid 35, the lid 30B, the display unit 40, the second reflecting unit 50B, and the first reflecting unit 90B, and has an opening 11B at the top.

  The separate lid 35 is disposed at the upper rear end of the housing 10B. The separate lid 35 has a fourth rotation shaft 35a extending along the X-axis direction, and is pivotally supported around the fourth rotation shaft 35a with respect to the housing 10B. Further, the separate lid 35 is biased in a direction to close the opening 11B of the housing 10B by a spring or the like, and is maintained in a state of covering the opening 11B behind the housing 10B in the cover state.

  The combiner 20B is disposed on the front side (Y-axis positive direction side) of the housing 10B. The combiner 20B includes a combiner main body 21 and a combiner holder 22B. The combiner holder 22B holds the combiner main body 21 and rotates the held combiner main body 21 around the first rotation shaft 22Ba. Thereby, the combiner main body 21 is displaced between the housed state (see FIG. 21) and the used state (see FIG. 23).

  The lid body 30B includes a lid body 31B and an arm 32B. The lid body 31B is supported by the arm 32B so as to be rotatable around the second rotation shaft 32Ba. The second reflecting portion 50B is attached to the surface of the lid main body 31B on the second rotation shaft 32Ba side.

  The lid body 30 </ b> B is disposed between the separate lid 35 and the combiner 20. Specifically, the lid body 30B is arranged at a position where the base end portion of the lid main body 31B overlaps the distal end portion of the separate lid 35 in the cover state shown in FIG.

  The lid body 31B and the surfaces 31Ba and 35b of the separate lid 35 exposed to the outside in the covered state are arranged on the same plane as the outer edge portion 11Ba of the opening 11B of the housing 10B in the covered state. By setting it as this structure, the designability of the head-up display apparatus 1B can be improved.

  The arm 32B rotates the lid main body 31B and the second reflecting portion 50B around the second rotation axis 32Ba. Thereby, the lid body 31B is displaced between the cover state (see FIG. 21) and the incident state (see FIG. 23).

  As shown in FIG. 22, in the head-up display device 1 </ b> B according to the third embodiment, the lid body 30 </ b> B is moved in conjunction with the separate lid 35 to be displaced from the lid state to the incident state. That is, the lid 30B is displaced from the cover-covered state to the incident state while pushing down the separate lid 35 at the base end portion of the lid body 31B. Thereby, the separate lid 35 is displaced in the direction of opening the opening 11B of the housing 10B against the urging force. In the incident state shown in FIG. 23, the separate lid 35 is accommodated in the housing 10B in a state of being sandwiched between the housing 10B and the lid body 31B.

  As described above, in the head-up display device 1B according to the third embodiment, the lid body 30B is provided with the separate lid 35B. When the lid body 30B is displaced from the cover state to the incident state, The separate lid 35 is pushed down at the base end. Thereby, since the rotation radius of the cover body 30B can be suppressed small, the enlargement of the housing | casing 10B can be suppressed.

  As shown in FIG. 23, after the display light of the image provided by the head-up display device 1B according to the third embodiment is emitted from the display unit 40, the first reflection unit 90B and the second reflection unit 50B sequentially The light is reflected and enters the combiner 20B, and is further reflected by the combiner 20B and enters the eyes of the driver.

  In the above description, it has been described that the lid body 30B pushes down the separate lid 35 at the base end portion of the lid body 31B. However, a separate moving mechanism moves both the lid body and the separate lid, thereby The separate lid may be interlocked.

  As mentioned above, some of the embodiments of the head-up display device according to the present application have been described in detail with reference to the drawings. It is possible to carry out the present invention.

  For example, in the above embodiment, the combiner and the lid have been described as moving by rotating, but may be moved by a moving method other than rotation, such as sliding. Further, the combiner and the lid may be moved by a moving method that combines sliding and rotation.

  In addition, in the first embodiment, a part of the lid body 30 that has entered the incident state protrudes outside the housing 10, but as in the second and third embodiments, the lid that has entered the incident state. The entire body 30 may enter the inside of the housing 10. As described above, it is desirable that the entire lid body in the incident state enters the inside of the housing. However, if more than half of the lid that is in the incident state enters the inside of the housing as in the first embodiment, the lid is in the view of the driver in the usage state of the head-up display device 1. You can prevent it from getting in the way.

  Moreover, you may further provide the locking mechanism for hold | maintaining the position of the cover body which became the incident state. Thereby, since the position of the reflection part integrated with the cover body is maintained, the optical path of the display light from the display part can be stabilized. As a result, the position of the virtual image reflected on the combiner is stabilized, and the visibility of the virtual image can be improved. Even when such a lock mechanism is not provided, as in the first embodiment, the position of the lid body and the reflecting portion can be adjusted by bringing at least a part of the lid body in the incident state into contact with the housing. Can be held.

DESCRIPTION OF SYMBOLS 1 Head-up display apparatus 10 Case 20 Combiner 30 Lid 40 Display part 50 Reflection part

Claims (9)

A display unit that emits display light;
A combiner that is movable between a use state in which the display surface is raised and a storage state in which the display surface is tilted, and that reflects the display light on the display surface to display a virtual image;
A reflection unit that reflects display light emitted from the display unit and enters the combiner;
Provided integrally with the reflecting portion, the reflecting portion is arranged on an optical path of the display light, and covers the combiner in the housed state and an incident state in which the display light is incident on the combiner in the use state A lid that is movable between a covered state ,
A head-up display device comprising: a casing that supports the combiner so as to be rotatable around a first rotation axis, and a casing that supports the lid so as to be rotatable around a second rotation axis . The lid is
A first lid portion for holding the reflecting portion;
The head according to claim 1, further comprising: a second lid part that is rotatably supported by the first lid part and is displaced in accordance with the rotation of the first lid part. Up display device. The housing is
Head-up display device according to claim 2, characterized in that it comprises a guide portion for guiding said second lid portion. The guide part is
Guiding the second lid portion so that the second lid portion is displaced with respect to the first lid portion while being bent toward the rotation center side of the first lid portion. The head-up display device according to claim 3. Wherein the housing, have a opening at the top,
The base end portion is rotatably supported with respect to the housing, and further includes another cover that covers a part of the opening,
The lid is
The base cover part is arrange | positioned in the position which overlaps with the front-end | tip part of the said separate cover in the said cover state, and it moves to the said incident state from the said cover state by moving in conjunction with the said separate cover. The head-up display device described in 1. The head-up display device according to claim 5, wherein the lid body is displaced from the cover-covered state to the incident state while pushing down the separate lid at the base end portion. The combiner is
A combiner body having the display surface;
A combiner holder for rotatably holding the combiner body,
The combiner holder is
5. The head-up display device according to claim 1, further comprising: a contact portion that contacts a front end portion of the lid body in the cover state in the storage state. A drive source for generating a rotational drive force;
A first transmission mechanism for transmitting the rotational driving force to the combiner;
The head-up display device according to claim 1, further comprising: a second transmission mechanism that transmits the rotational driving force to the lid. A first converter that converts the rotational drive force generated by the drive source into a straight drive force and moves straight;
The first transmission mechanism includes:
A second conversion unit that is disposed at a position in contact with the first conversion unit in the use state, and converts a straight driving force of the first conversion unit into a driving force for movement of the combiner;
The second transmission mechanism is
It is arranged at a position away from the first conversion unit in the use state, and after the combiner starts to move from the use state to the storage state, it comes into contact with the first conversion unit that has approached by a straight movement. The head-up display device according to claim 8, further comprising a third conversion unit that converts a straight driving force of the first conversion unit into a driving force for moving the lid.

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