JP6579169B2 - Display device - Google Patents

Description

  The present invention relates to a display device.

  Conventionally, there is a disclosure of a driving support device that displays an image for supporting a driver of a vehicle (see, for example, Patent Document 1). Patent Document 1 describes that image data (foreground image data) of a vehicle front scene photographed by a camera is displayed as a moving image or a still image on a head-up display device.

JP 2013-218671 A

  By the way, in recent years, an expression with a depth may be required as a display of a display device, but the current depth expression is only a pseudo one such as an expression imitating three-dimensional graphics.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a display device capable of displaying with a sense of depth.

Is been inventions disclosed in order to solve the above problems,
A light emitting section (3A, 3B) that emits light of a display image (39A, 39B) ;
An optical path forming section (120, 101) for guiding light from the light emitting section to form a display optical path (143), and a display device mounted on the host vehicle,
A first light emitting unit as a light emitting unit that emits light of a first display image as a display image;
A second light emitting unit (7) that emits light of a second display image (70) different from the first display image,
The optical path forming unit guides light from the first light emitting unit to form a first display optical path as a display optical path, guides light from the second light emitting unit to form a second display optical path (147),
The virtual image forming members (2, 105) disposed in the visual field of the viewer (200) and on the first display optical path and the second display optical path allow light from the first light emitting unit and the second light emitting unit to be viewed by the viewer. of by reflecting on the side, the first display image of the virtual image (35A, 35B) forward and is imaged virtual image (71) of the second display image,
The virtual image of the first display image is formed in the depth direction viewed from the viewer to form an oblique image surface (145) that is inclined with respect to the optical axis (144) of the display optical path ,
The depth of the image plane on which the virtual image of the second display image is formed is smaller than the depth of the image plane on which the virtual image of the first display image is formed,
The first display image is a marking figure representing a road marking that divides the traveling lane of the host vehicle.
The second display image is a vehicle figure representing the host vehicle or another vehicle,
A real image display unit (4A, 4B) for displaying a real image (45A, 45B) arranged in the visual field of the viewer and having a length in the depth direction;
The real image display unit is a display device that displays a real image of a sign figure having continuity with the virtual image on the near side of the virtual image of the first display image viewed from the viewer in the host vehicle .

According to such inventions, rather than as a virtual image display viewed from the front shape of the display image, a virtual image display of the display image by the imaging to lay in the depth direction, with respect to the optical axis of the display optical path from the light emitting portion Will be tilted diagonally. That is, since a virtual image display having a length in the depth direction of the real space can be performed, a sense of depth can be obtained as compared with the conventional pseudo depth expression.

It is the front view which looked at the display apparatus from the driver's seat in 1st Embodiment. It is the top view which looked at the display apparatus from the upper direction of the instrument panel in 1st Embodiment. It is sectional drawing from the side of the display apparatus in 1st Embodiment. It is an expanded sectional view from the side of the display apparatus in a 1st embodiment. It is a front view of a virtual image light source unit. It is a figure for demonstrating the arrangement angle of a virtual image light source unit, and is a schematic diagram which shows the state which looked at the virtual image light source unit, the combiner, and the virtual image from the side. It is the perspective view which looked at the food | hood and combiner which hide a virtual image light source unit from diagonally forward. It is the block diagram which showed the electrical structure of the display apparatus and the lane maintenance assistance system. It is sectional drawing from the side of the display apparatus in 2nd Embodiment. It is sectional drawing from the side of the display apparatus in 3rd Embodiment. It is sectional drawing from the side of the display apparatus in 4th Embodiment. It is the front view which looked at the display apparatus from the driver's seat in 5th Embodiment. It is the top view which looked at the display apparatus from the upper direction of the instrument panel in 5th Embodiment. It is the top view which looked at the display apparatus from the upper direction of the instrument panel in 6th Embodiment. It is the top view which looked at the display apparatus from the upper direction of the instrument panel in 7th Embodiment. It is the top view which looked at the display apparatus from the upper part of the instrument panel in 8th Embodiment. It is the front view which looked at the display apparatus from the driver's seat in 9th Embodiment. It is the perspective view which looked at the display apparatus from diagonally forward in 9th Embodiment. FIG. 18 is a cross-sectional view taken along line XIX-XIX in FIG. 17 and is a cross-sectional view of a real image display unit. It is sectional drawing when a meter and a combiner are cut in the left-right center plane. It is the front view which looked at the display apparatus from the driver's seat in 10th Embodiment. It is the top view which looked at the display apparatus from the upper direction of an instrument panel in 10th Embodiment. It is an expanded sectional view from the side of a display in a 10th embodiment. It is the front view which looked at the display apparatus from the driver's seat in 11th Embodiment. It is the top view which looked at the display apparatus from the upper direction of an instrument panel in 11th Embodiment. It is an expanded sectional view from the side of a display in an 11th embodiment. It is an expanded sectional view from the side of a display in a 12th embodiment. It is an expanded sectional view from the side of a display in a 12th embodiment.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings. The display device 1 shown in FIGS. 1 to 4 is a device that is mounted on a vehicle and performs display in the front view of the driver 200.

  An instrument panel 100 is provided in front of the driver's seat in the vehicle. The instrument panel 100 has an upper surface portion (hereinafter referred to as an instrument panel upper surface portion) 101 facing upward of the vehicle and a front surface portion 102 facing the driver's seat. The instrument panel upper surface portion 101 includes a front side portion 101a located on the near side as viewed from the driver 200 and a back side portion 101b located on the back side. Here, when the line extending in the front-rear direction of the vehicle is a front-rear direction line, and the direction parallel to the front-rear direction line and facing the front of the vehicle is the depth direction, the front side portion 101a is on the far side in the depth direction. It is slightly inclined so that it gradually increases as you go. The back side portion 101b is slightly inclined so that one end on the near side in the depth direction is connected to the near side portion 101a and gradually decreases from the connection portion toward the back side in the depth direction. The front face 102 is provided from the end on the near side (that is, the driver's seat side) in the depth direction of the instrument panel upper face 101 to the lower side.

  The instrument panel 100 is provided with a meter (not shown) that displays information such as vehicle speed and engine speed. Further, a steering column 111 is provided so as to protrude slightly diagonally upward from the front surface portion 102 of the instrument panel 100 toward the driver's seat. The steering column 111 includes a steering shaft (not shown), and is provided with lights (for example, a headlight, a taillight, etc.) and a wiper operation lever (not shown). A steering 110 for steering the vehicle is provided at the tip of the steering column 111.

  The lower end of the front window 105 of the vehicle is connected to the end on the back side in the depth direction of the back side 101b of the instrument panel upper surface 101. The front window 105 is inclined so as to gradually approach the rear of the vehicle as it goes from the lower end to the upper end. As a result, the space above the instrument panel upper surface 101 is covered with the front window 105. In other words, the instrument panel upper surface portion 101 and the front window 105 are in a positional relationship facing each other with the upper space interposed therebetween. The front window 105 may be provided at approximately 90 ° with respect to the instrument panel upper surface portion 101 as in a large vehicle.

  The display device 1 includes a combiner 2, a virtual image light source unit 3, a real image display unit 4, and a control unit 5 (see FIG. 8). The combiner 2 reflects the light 140 (see FIGS. 3 and 4) from the virtual image light source unit 3 toward the driver 200 of the vehicle as a viewer so that the virtual image 35 of the display image 39 is displayed in front of the combiner 2. A virtual image forming member that forms an image. That is, the combiner 2 is an optical member that allows the driver 200 to visually recognize the virtual image 35 through the combiner 2. Therefore, the combiner 2 of the present embodiment is disposed on the optical path that is the path of the light 140 from the virtual image light source unit 3 within the driver's 200 front view. At the same time, the combiner 2 is configured so that the front scenery of the combiner 2 can be seen through the combiner 2.

  Specifically, the combiner 2 is configured as a half mirror that reflects a part of the light 140 from the virtual image light source unit 3 and transmits a part of the light from the front of the combiner 2 to reach the eyes 201 of the driver 200. Has been. In such a combiner 2, for example, a transparent resin such as acrylic or polycarbonate is used as a base material, and the incident surface 21 defined on the virtual image light source unit 3 side of the base material is covered with a half mirror coat (in other words, a beam splitter coat). Formed into a structure.

  The combiner 2 is provided in the vicinity of the boundary between the front side portion 101a and the back side portion 101b in the instrument panel upper surface portion 101. In the present embodiment, the combiner 2 has a mounting portion 22 (see FIG. 7) attached to the instrument panel upper surface portion 101 in a state where it always stands up. The attachment part 22 and the instrument panel upper surface part 101 may be attached by any method such as screwing or claw fitting. Note that the combiner 2 may be provided so that it can be stored in the instrument panel 100 or can be moved so as to be faced down on the instrument panel upper surface 101 when not in use.

  The combiner 2 is formed in a rectangular plate shape, for example. The combiner 2 is arranged such that one rectangular surface faces the vehicle rear (that is, the driver 200 side and the virtual image light source unit 3 side), and the other rectangular surface faces the vehicle front. At this time, the longitudinal direction of the rectangular surface of the combiner 2 is directed to the vehicle left-right direction. When viewed from the front of FIG. 1 or the top surface of FIG. 2, the center in the longitudinal direction of the combiner 2 (hereinafter referred to as the combiner center) is aligned with the center in the left-right direction of the driver's seat or the steering 110, and The normal line at is located on a plane (hereinafter referred to as a left-right central plane) 130 facing the left-right direction of the vehicle. That is, the amount of deviation in the vehicle left-right direction between the combiner center and the left-right center plane 130 is zero.

  Further, the rising angle θ1 (see FIG. 4) from the instrument panel upper surface portion 101 of the combiner 2 allows the light 140 from the virtual image light source unit 3 to be incident on the incident surface 21 of the combiner 2 facing the driver 200 side. In addition, the incident light 140 is adjusted so as to be reflected toward the eyes 201 of the driver 200.

  The combiner 2 of the present embodiment is configured to form a virtual image 35 having the same size as the display image 39 (see FIG. 4) of the virtual image light source unit 3. That is, the ratio of the size of the virtual image 35 to the display image 39 is 1.0. In the combiner 2 that does not have an enlargement function, for example, the incident surface 21 of the combiner 2 and the opposite surface thereof are flat, and the plate thickness between the incident surface 21 and the opposite surface is at any part. It is the same value.

  The virtual image light source unit 3 emits light 140 of a display image 39 for displaying the virtual image 35. As shown in FIG. 4, the virtual image light source unit 3 is provided so as to cover a plurality of light sources 31, a substrate 32 on which the light sources 31 are mounted, a housing portion 33 that houses the light sources 31 and the substrate 32, and the light source 31. And a diffusion plate 34 that diffuses and emits light from the light source 31. The light source 31 is, for example, an LED (Light Emitting Diode). The light emission color of the light source 31 is, for example, white, but may be a color other than white. Each light source 31 is arranged on a straight line as shown in FIG.

  The accommodating portion 33 is formed of a light-shielding material (for example, opaque resin) and is provided so as to surround the periphery of the light source 31 and the substrate 32 other than the upper portion. The accommodating portion 33 includes a bottom portion 33a to which the substrate 32 on which the light source 31 is mounted is attached, an opening portion 33b at a position facing the bottom portion 33a, and a side wall portion 33c that surrounds a space between the bottom portion 33a and the opening portion 33b. Have. As shown in FIGS. 4 and 5, the opening 33 b is formed in an elongated rectangular shape whose longitudinal direction is the arrangement direction of the plurality of light sources 31, that is, in a linear shape.

  The diffusion plate 34 is formed in the same shape as the opening 33b and is fitted in the opening 33b. The diffusion plate 34 is formed of a material that can transmit light from the light source 31 while diffusing the light (for example, milky white translucent resin).

  As described above, the virtual image light source unit 3 is a light emitting unit that emits the light 140 of the display image 39 by using the emission surface 34 a of the diffusion plate 34 as the formation surface of the display image 39. The display image 39 has an elongated rectangular shape when viewed from the front.

  As shown in FIGS. 2 to 4, the virtual image light source unit 3 is arranged on the instrument panel upper surface portion 101. Specifically, the virtual image light source unit 3 emits light 140 toward the combiner 2 on the front side of the combiner 2 and the real image display unit 4 when viewed from the driver 200, that is, on the driver 200 side, in the instrument panel upper surface portion 101. To be arranged. In other words, the virtual image light source unit 3 is disposed at a position higher than the real image display unit 4 and the steering column 111 in the vehicle height direction, which is a direction perpendicular to the grounding surface of the vehicle, on the instrument panel upper surface portion 101. ing. Further, the virtual image light source unit 3 is disposed on the back side (that is, the vehicle front side) from the steering 110 as viewed from the driver 200. As described above, the virtual image light source unit 3 is disposed around the upper portion of the root portion of the steering column 111.

  The instrument panel 100 is provided with a support portion 103 (see FIG. 4) that supports the virtual image light source unit 3. In the present embodiment, the support portion 103 is provided at a position higher than the instrument panel upper surface portion 101 that is the installation surface of the real image display portion 4, but may be provided at a position lower than the instrument panel upper surface portion 101. The support portion 103 is formed with a recess serving as the housing portion 33 of the virtual image light source unit 3.

  As shown in FIGS. 2 and 5, the virtual image light source unit 3 is arranged at the position of the left and right central plane 130. That is, the amount of deviation between the virtual image light source unit 3 (the light source 31 and the diffuser plate 34) and the left and right center plane 130 in the vehicle left-right direction is zero. The angle formed between the display image 39 and the left and right central plane 130 is 0 °.

  Furthermore, the virtual image light source unit 3 is disposed so as to be tilted so that a virtual image 35 in which the display image 39 is laid in the depth direction as viewed from the driver 200 is formed. Hereinafter, the details of the arrangement angle of the virtual image light source unit 3 will be described with reference to FIG. Light 140 from the virtual image light source unit 3 is reflected on the incident surface 21 of the combiner 2. At this time, the reflection angle θ3 of the light 140 on the incident surface 21 is equal to the incident angle θ2 of the light 140 on the incident surface 21. When the light 141 reflected at the reflection angle θ3 reaches the eyes 201 of the driver 200, a virtual image 35 is formed in front of the combiner 2 and is visually recognized. The imaging position of the virtual image 35 depends on the optical distance (the optical path length of the light 140) from the virtual image light source unit 3 to the incident surface 21 on a line 142 obtained by extending the reflected light 141 on the opposite side with respect to the combiner 2. It becomes the position. At this time, the virtual image 35 is formed at a position farther from the combiner 2 as the optical distance from the virtual image light source unit 3 to the incident surface 21 is larger.

  Here, when the virtual image light source unit 3 is disposed at a position (hereinafter referred to as an equidistant position) 30 where the optical distances to the combiner 2 are equal between the parts of the display image 39, that is, the display image 39 of the virtual image light source unit 3 is displayed. Consider a case where the exit surface 34 a to be formed is arranged in parallel to the entrance surface 21 of the combiner 2. In this case, since the optical distance to the combiner 2 is equal between the respective parts of the display image 39, the virtual image 350 is formed at a position where the distance from the combiner 2 is substantially the same between the respective parts. At this time, the virtual image 350 does not have a length in the depth direction when viewed from the driver 200. In other words, the front view shape (see FIG. 5) of the display image 39 is displayed as it is as the virtual image 350.

  Therefore, in the virtual image light source unit 3 of the present embodiment, the emission surface 34a that forms the display image 39 is formed with respect to the equidistant position 30 so that a virtual image 35 having a shape in which the display image 39 is laid in the depth direction is formed. Tilt and arranged. Specifically, the virtual image light source unit 3 maintains the angle formed by the display image 39 and the left and right center plane 130 at 0 ° (see FIG. 5), and moves from one end of the elongated rectangular display image 39 toward the other end. The optical distance to the combiner 2 is gradually inclined with respect to the equidistant position 30 in the direction opposite to the depth direction. At this time, out of the light 140 of the display image 39, the light incident on the incident surface 21 at a position where the height from the instrument panel upper surface portion 101 is higher is increased. In the example of FIG. 6, the emission surface 34 a is inclined toward the driver 200 with the lower end of the emission surface 34 a when the virtual image light source unit 3 is disposed at the equidistant position 30 as a base point.

  Assuming that the virtual image light source unit 3 is tilted by an angle θ4 with respect to the equidistant position 30, the virtual image 35 is at an angle θ4 with respect to the imaging position of the virtual image 350 when the virtual image light source unit 3 is disposed at the equidistant position 30. It tilts in the depth direction by a corresponding angle θ5. Here, as shown in FIGS. 1 to 4, in this embodiment, the inclination of the virtual image light source unit 3 so that the virtual image 35 is formed on the extension line 131 of the real image 45 displayed by the real image display unit 4. The angle θ4 is set. Note that the front side portion 101a of the instrument panel upper surface portion 101 on which the real image display unit 4 is arranged is slightly inclined so as to gradually increase toward the back side, so that it is displayed by the real image display unit 4. The extension line 131 of the real image 45 also has a slight inclination with respect to the ground contact surface of the vehicle. Therefore, the virtual image 35 formed on the extension line 131 also has a slight inclination with respect to the ground contact surface of the vehicle.

  Note that when the driver 200 changes, the height of the eye 201 changes, so that the imaging position of the virtual image 35 changes slightly. Therefore, an image forming position of the virtual image 35 may be finely adjusted by providing an adjustment mechanism for finely adjusting the position of the virtual image light source unit 3 and the rising angle θ1 of the combiner 2 based on the operation of the driver 200.

  The virtual image 35 of the present embodiment has a length in the depth direction extending linearly along the extension line 131 of the real image 45. Here, the longer the length of the virtual image light source unit 3 (display image 39) in the longitudinal direction, the longer the length of the virtual image 35 in the depth direction. The longer the virtual image 35 is in the depth direction, the closer the end 35d (see FIGS. 1 and 4) of the virtual image 35 is to the frontal scenery where the virtual image 35 can be seen. Visibility is improved. On the other hand, when the virtual image light source unit 3 is large, it is difficult to secure a space for installing the virtual image light source unit 3. Therefore, the size of the virtual image light source unit 3 is determined from the viewpoint of the visibility of the virtual image 35 and the installation space of the virtual image light source unit 3.

  The virtual image light source unit 3 and the support portion 103 that supports the virtual image light source unit 3 are arranged so that they cannot be seen by the driver 200 by the hood 120. The hood 120 is made of, for example, a resin having a light shielding property. The hood 120 is formed in a shape surrounding the virtual image light source unit 3 by the respective parts 121 to 123 as light shielding walls except for the direction of the combiner 2. Specifically, as shown in FIGS. 3 and 4, the hood 120 includes a front surface portion 121 facing the driver 200 and an upper surface portion 122 provided to cover the virtual image light source unit 3. The front part 121 and the upper surface part 122 are formed in a plate shape.

  The front part 121 is formed integrally with the front part 102 of the instrument panel 100 and extends upward from the upper end of the central part (the part where the left and right central planes 130 intersect) of the front part 102 in the left-right direction. Yes. The front part 121 is formed in a shape in which the lateral width gradually decreases as it goes upward, that is, in a trapezoidal shape.

  The upper surface part 122 is provided so as to protrude in the depth direction from the upper end of the front part 121. The amount of protrusion of the upper surface part 122 from the front part 121 is set so that the virtual image light source unit 3 cannot be seen from the driver 200 and the real image display part 4 can be seen. As a result, the front end 122a of the upper surface portion 122 is positioned on the back side of the virtual image light source unit 3 as shown in FIGS. 4 and 7, but is positioned on the near side of the real image display unit 4. The upper surface portion 122 is formed in a substantially rectangular shape when viewed from above. The front portion 121 and the upper surface portion 122 described above are formed integrally with the front surface portion 102 of the instrument panel 100, but may be formed separately.

  Furthermore, as shown in FIG. 7, the hood 120 includes two side surface portions 123 that are arranged at intervals in the left-right direction of the vehicle in a space surrounded by the front surface portion 121 and the upper surface portion 122. The side surface portion 123 is formed in a plate shape. In the side surface portion 123, one end in the height direction is connected to the upper surface portion 122, and the other end is connected to the instrument panel upper surface portion 101. One end of the side surface portion 123 in the front-rear direction is connected to the front surface portion 121. In addition, the hood 120 is not provided with a light shielding wall in the direction of the combiner 2, and has an opening in the direction of the combiner 2.

  As described above, the hood 120 has an opening in the direction of the combiner 2 in the instrument panel upper surface portion 101, and has a shape closed in directions other than the direction of the combiner 2. As shown in FIG. 4, the virtual image light source unit 3 and the support portion 103 thereof are disposed in a space 124 surrounded by a front surface portion 121, an upper surface portion 122, and two side surface portions 123. This space 124 is a space that is not visible when viewed from the driver 200, but is an open space when viewed from the combiner 2. Accordingly, the driver 200 cannot see the virtual image light source unit 3, but the light 140 from the virtual image light source unit 3 can reach the combiner 2.

  Here, in the virtual image light source unit 3, the exit surface 34 a is arranged on the driver 200 side of the combiner 2 so as to face the combiner 2, and the light 140 from the exit surface 34 a is directly connected to the combiner 2 without passing through a reflecting mirror. To reach. That is, between the virtual image light source unit 3 and the combiner 2, a reflecting mirror that changes the direction of the light 140 from the virtual image light source unit 3 and guides the display image 39 to the combiner 2 is interposed as shown in FIGS. Not.

  As shown in FIGS. 1, 3, 4, and 7, the real image display unit 4 displays a linear real image 45 extending in the depth direction of the instrument panel upper surface 101 that is the vehicle front-rear direction. The real image display unit 4 has the same structure as the virtual image light source unit 3. Specifically, as shown in FIG. 4, the real image display unit 4 includes a plurality of light sources 41, a substrate 42 on which the light sources 41 are mounted, a light-shielding accommodation unit 43 that accommodates the light sources 41 and the substrate 42, and a light source 41. And a diffusing plate 44 that diffuses and emits the light from the light source 41. The light source 41 is, for example, an LED. The emission color of the light source 41 is, for example, the same color (for example, white) as the emission color of the virtual image light source unit 3. Each light source 41 is arranged in a straight line on the substrate 42.

  The accommodating portion 43 and the diffusing plate 44 are formed in the same manner as the accommodating portion 33 and the diffusing plate 34 of the virtual image light source unit 3. The exit surface 44 a of the diffusion plate 44 forms a real image 45 that is displayed on the real image display unit 4.

  The real image display unit 4 is disposed at a position where the driver 200 can see the real image display unit 4. Specifically, the real image display unit 4 is disposed on the front side portion 101 a of the instrument panel upper surface portion 101 that is in the front visual field of the driver 200. Specifically, the front side portion 101a is formed with a concave portion constituting the accommodating portion 43 of the real image display portion 4, and the light source 41, the substrate 42 and the diffusion plate 44 are fitted into the concave portion. The exit surface 44a that forms the real image 45 in the real image display unit 4 is provided on the same plane as the front side portion 101a of the instrument panel upper surface portion 101, but is provided at a position slightly recessed or slightly protruding from the front side portion 101a. May be.

  As shown in FIGS. 1 and 2, the real image display unit 4 is arranged at the position of the left and right central plane 130. That is, the angle formed between the elongated rectangular real image 45 displayed by the real image display unit 4 and the left and right central plane 130 is 0 °.

  As shown in FIGS. 1 and 4, the rear end 44 b of the real image display unit 4 (real image 45) is disposed on the front side of the combiner 2, but the virtual image 35 and the real image 45 are combined into one linear image. In order to make it visually recognizable, it is preferable to arrange it as close to the combiner 2 as possible. When the distance between the front end 35 c of the virtual image 35 and the combiner 2 is large, the end 44 b of the real image display unit 4 extends to the same position as the combiner 2 or to a position behind the combiner 2. May be. This makes it easy to ensure the integrity and continuity between the real image 45 and the virtual image 35.

  The control unit 5 shown in FIG. 8 includes a CPU that executes various processes, a ROM that stores programs and the like of processes executed by the CPU, and a RAM that temporarily stores various information during the processing of the CPU. . The control unit 5 controls lighting of the light source 31 (virtual image light source) of the virtual image light source unit 3 and the light source 41 (real image light source) of the real image display unit 4. Specifically, as shown in FIG. 8, the vehicle is equipped with a lane keeping support system 6, and the control unit 5 lights both the light sources 31 and 41 when the system 6 operates, and both the light sources 31 when the system 6 is stopped. , 41 are turned off. The control unit 5 is provided in the instrument panel 100, for example.

  Here, the lane keeping support system 6 will be described. The lane keeping support system 6 is a system that automatically keeps the lane even when the driver 200 does not operate the steering 110 while the vehicle is traveling at a high speed. The lane keeping support system 6 electrically operates a switch 62 that switches on and off the system 6 by an operation of the driver 200, a camera 63 that captures a landscape in front of the vehicle, a vehicle speed sensor 64 that detects a vehicle speed, and a vehicle steering mechanism. A steering device 65, a warning device 66 that warns the driver 200 when it is difficult to maintain an automatic lane, and a control unit 61 and the like connected thereto are configured.

  The control unit 61 captures the camera 63 when the lane keeping support system 6 is turned on by the operation of the switch 62 by the driver 200 and the vehicle speed detected by the vehicle speed sensor 64 is equal to or higher than a predetermined value (for example, 65 km / h). A road marking such as a white line on the road is recognized from the image, and an automatic steering control is commanded to the steering device 65 so as not to deviate from the lane delimited by the road marking. Further, the control unit 61 causes the warning device 66 to output a warning such as stopping the operation of the lane keeping support system 6 when automatic lane keeping is difficult, such as when the lane curve radius is steep.

  In the lane keeping support system 6 of the present embodiment, the driver 200 performs the acceleration / deceleration operation of the vehicle when the system 6 is operated. However, the acceleration / deceleration of the vehicle may be automatically performed. good. In this case, the vehicle is equipped with a sensor (for example, a camera, a radar, or the like) that detects the distance from the preceding vehicle, and a vehicle driving device (for example, an engine or a motor) according to the distance from the preceding vehicle detected by the sensor. Etc.) and deceleration by the vehicle brake device are controlled.

  The control unit 5 of the display device 1 and the control unit 61 of the lane keeping support system 6 are connected to be communicable. The control unit 5 receives information on the operation and stop of the system 6 from the control unit 61 of the lane keeping support system 6 and switches on and off the light sources 31 and 41 based on the received information.

  Hereinafter, the effect of this embodiment will be described. According to this embodiment, the front view shape of the display image 39 is not shown to the driver 200 as it is, but the shape is laid down in the depth direction and a virtual image is displayed. That is, since a display having a length in the actual space in the depth direction is performed, it is possible to give a sense of depth compared to the conventional pseudo depth expression.

  In addition, the real image 45 by the real image display unit 4 and the virtual image 35 by the virtual image light source unit 3 and the combiner 2 are displayed when the lane keeping support system 6 is operated, and are displayed linearly in the forward depth direction of the driver 200. . Therefore, the driver 200 can be reminded of the real image 45 and the virtual image 35 as road markings representing the lanes of the road, and it is easy for the driver 200 that the lane maintenance is automatically performed by the lane maintenance support system 6. It can be grasped.

  Since the real image 45 and the virtual image 35 are displayed on the same straight line, the driver 200 can recognize the real image 45 and the virtual image 35 as images having continuity and integrity. Here, the terms “continuity” and “integration” are used to include a case where there is a slight gap between the real image 45 and the virtual image 35.

  In addition, since both the real image 45 and the virtual image 35 have a length in the actual depth space, it is possible to give a sense of depth as compared to a pseudo depth expression imitating a three-dimensional graphic. The driver 200 can easily recognize that the vehicle is traveling along the road.

  Further, since the depth representation is performed by combining the real image 45 and the virtual image 35, it is possible to display longer in the depth direction than only one of the real image 45 and the virtual image 35. In other words, if the depth is expressed only by the real image 45, it is not possible to display a length longer than the depth of the instrument panel upper surface 101. On the other hand, if an attempt is made to express the depth only with the virtual image 35, the virtual image light source unit 3 and the combiner 2 become large in order to form a longer virtual image 35 in the depth direction. Furthermore, if the depth is expressed only by the virtual image 35, the depth on the near side of the combiner 2 cannot be expressed. On the other hand, in the present embodiment, by combining the real image 45 and the virtual image 35, it is possible to perform a long display in the depth direction without enlarging the virtual image light source unit 3 and the combiner 2.

  In addition, since the light 140 from the virtual image light source unit 3 is directly incident on the combiner 2 without passing through a reflecting mirror, the configuration of the display device 1 can be simplified and the display device 1 is enlarged because there is no reflecting mirror. Can be suppressed.

  Further, since the virtual image light source unit 3 is disposed on the instrument panel upper surface portion 101, the configuration in the instrument panel 100 can be simplified. Furthermore, in the configuration in which the virtual image light source unit 3 is arranged in the instrument panel 100, it is necessary to provide a hole for emitting light from the unit 3 in the instrument panel upper surface portion 101. In the present embodiment, the virtual image light source unit 3 Is disposed outside the instrument panel upper surface portion 101, so that it is not necessary to make a hole in the instrument panel upper surface portion 101, and the design of the instrument panel 100, that is, the appearance can be improved.

  The real image 45 and the virtual image 35 are displayed at a position lower than the front window 105, but the display positions of the real image 45 and the virtual image 35 gradually increase toward the back side, so that the real image can be obtained without moving the line of sight down so much. 45 and the virtual image 35 can be visually recognized. Therefore, the visibility of the real image 45 and the virtual image 35 can be improved.

  Further, since the real image 45 and the virtual image 35 are displayed outside the instrument panel 100, the driver 200 when viewing the real image 45 and the virtual image 35 is compared with the case where the real image 45 and the virtual image 35 are displayed. The movement of the line of sight can be reduced, whereby the visibility of the straight line image by the real image 45 and the virtual image 35 can be improved.

  Moreover, according to the visual recognition of the forward scenery through the combiner 2, it is possible to suppress the visibility of the forward scenery associated with the installation of the combiner 2 from being lowered.

  Moreover, since the virtual image light source unit 3 is surrounded by the respective parts 121 to 123 as light shielding walls except for the direction of the combiner 2, it is possible to suppress the light 140 from the virtual image light source unit 3 from leaking in the direction other than the combiner 2. The light 140 can be efficiently applied to the combiner 2. Furthermore, since the virtual image light source unit 3 is disposed by the hood 120 so that it cannot be seen by the driver 200, the appearance of the instrument panel 100 can be improved.

(Second Embodiment)
Next, a second embodiment of the present invention will be described focusing on differences from the above embodiment. The combiner 2 of this embodiment shown in FIG. 9 has a lens function that enlarges the display image 39 of the virtual image light source unit 3. Specifically, the entire incident surface 21 of the combiner 2 is formed in a concave curved surface. That is, as the combiner 2 approaches the center along the height direction, the plate thickness between the incident surface 21 and the opposite surface gradually decreases, and the plate gradually increases as it approaches the center along the left-right direction of the combiner 2. It is formed in a shape with a reduced thickness.

  The combiner 2 having the concave incident surface 21 has a lens function and forms a virtual image 35 in which the display image 39 is enlarged. Thereby, the length in the depth direction of the virtual image 35 in FIG. 9 is longer than the length in the depth direction of the virtual image 35 in FIG. 4 of the first embodiment. Further, the near end 35c of the virtual image 35 in FIG. 9 (that is, the driver 200 side) is formed at a position closer to the combiner 2 than the near end 35c in the virtual image 35 in FIG. Become. At the same time, the back end 35d of the virtual image 35 in FIG. 9 is imaged at a position farther from the combiner 2 than the back end 35d in the virtual image 35 in FIGS.

  Here, the larger the curvature of the combiner 2 (incident surface 21) is, the larger the magnification of the display image 39 is. Therefore, the curvature of the combiner 2 is appropriately set based on how large the virtual image 35 is displayed. The configuration other than the curvature of the combiner 2 is the same as that of the first embodiment.

  According to the present embodiment, in addition to obtaining the same effect as the first embodiment, the virtual image 35 obtained by enlarging the display image 39 is displayed, so that the rear side of the real image 45 displayed by the real image display unit 4 is displayed. A gap between the end 44b and the end 35c on the near side of the virtual image 35 can be reduced. According to this, the real image 45 and the virtual image 35 can be made easier to visually recognize as a continuous integrated image.

  Moreover, since the end portion 35d on the back side of the virtual image 35 can be displayed at a deeper position, a sense of depth of display can be further increased.

  Further, the length of the virtual image 35 in the depth direction can be secured without increasing the size of the virtual image light source unit 3 and the combiner 2. Therefore, the virtual image light source unit 3 and the combiner 2 can be reduced in size.

(Third embodiment)
Next, a third embodiment of the present invention will be described focusing on the differences from the above embodiment. In the second embodiment, an example in which the entire combiner 2 has a lens function is shown. However, in this embodiment, only a part of the combiner 2 has a lens function. As shown in FIG. 10, in the entrance surface 21 of the combiner 2 of this embodiment, a part is formed in a concave curved surface, and the remainder part is formed in the flat surface.

  A portion (hereinafter referred to as a concave curved surface portion) 21a formed on the concave curved surface is formed at a position where light forming a part of the front side of the virtual image 35 of the light 140 from the virtual image light source unit 3 is incident. . On the other hand, the concave curved surface portion 21a is formed at a position where light forming the remaining portion (that is, the back side portion of the virtual image 35) excluding a portion of the light 140 from the virtual image light source unit 3 on the front side of the virtual image 35 is incident. The flat surface 21b is formed.

  In the combiner 2, only the concave curved surface portion 21a has a lens function. Therefore, among the light 140 incident on the incident surface 21, only the image formed by the light incident on the concave curved surface portion 21a is enlarged, and the image formed by the remaining light is displayed at the same magnification. Therefore, as shown in FIG. 10, the near end 35 c of the virtual image 35 can be brought closer to the combiner 2. The configuration other than the concave curved surface portion 21a is the same as that in the above embodiment.

  According to this embodiment, in addition to obtaining the same effect as the above embodiment, the front end 35c of the virtual image 35 is brought closer to the combiner 2 without enlarging the virtual image light source unit 3 and the combiner 2. be able to. Therefore, the gap between the end portion 35c and the end portion 44b on the deep side of the real image 45 can be reduced. According to this, the real image 45 and the virtual image 35 can be made easier to visually recognize as a continuous integral image.

  Moreover, since the display image 39 of the virtual image light source unit 3 is displayed at an equal magnification in the back side portion of the virtual image 35, the virtual image 35 can be prevented from being distorted by enlargement.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described focusing on the differences from the above embodiment. In the present embodiment, the concave curved surface portion 21a is formed on only a part of the incident surface 21 of the combiner 2 as in the third embodiment, but the formation position of the concave curved surface portion 21a is different from the third embodiment. . That is, as shown in FIG. 11, the concave curved surface portion 21 a of the present embodiment is formed at a position where light that forms a part of the back side of the virtual image 35 out of the light 140 from the virtual image light source unit 3 is incident. . The other configuration is the same as that of the third embodiment.

  According to this embodiment, in addition to obtaining the same effect as the above embodiment, the end portion 35d on the back side of the virtual image 35 can be placed on the back side without increasing the size of the virtual image light source unit 3 or the combiner 2. Can be displayed in the position. According to this, a sense of depth of display can be further increased.

  In addition, the portion on the near side of the virtual image 35 displays the display image 39 of the virtual image light source unit 3 at the same magnification, so that the virtual image 35 can be prevented from being distorted by being enlarged.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described focusing on the differences from the above embodiment. 12 and 13 show the display device of this embodiment. In the present embodiment, the arrangement positions of the virtual image light source unit 3 and the real image display unit 4 are different from those in the above embodiment. Moreover, it is different from the said embodiment also in the point by which the liquid crystal display 7 is provided. Other configurations are the same as those in the above embodiment.

  As shown in FIGS. 12 and 13, the real image display unit 4 of the present embodiment is disposed at a position offset in the vehicle left-right direction from the left-right center plane 130. 12 and 13 show an example in which the real image display unit 4 is offset to the left side when viewed from the driver 200, but the real image display unit 4 may be offset to the right side when viewed from the driver 200. Further, the offset amount d1 from the left and right central plane 130 of the real image display unit 4 can be set to an appropriate value as long as it is within the front visual field of the driver 200. Further, the real image display unit 4 is arranged in parallel with the left and right central plane 130. The configuration of the real image display unit 4 other than the arrangement position is the same as that of the first embodiment.

  The virtual image light source unit 3 is arranged so as to form a virtual image 35 having a length in the depth direction on an extension line 131 of the real image 45 displayed by the real image display unit 4. That is, the virtual image light source unit 3 is also arranged at a position offset from the left and right central plane 130 in the same direction as the real image display unit 4. An offset amount d2 (see FIG. 13) of the virtual image light source unit 3 from the left and right center plane 130 is the same as the offset amount d1 of the real image display unit 4. The virtual image light source unit 3 is arranged so that a virtual image 35 extending parallel to the left and right central plane 130 is formed. Specifically, the virtual image light source unit 3 is arranged so that the display image 39 of the virtual image light source unit 3 is parallel to the left and right central plane 130. Further, the virtual image light source unit 3 is disposed in the hood 120. Thus, the virtual image light source unit 3 is arranged at the offset position, so that the virtual image 35 is also formed at a position offset from the left and right central plane 130. The configuration of the virtual image light source unit 3 other than the arrangement position is the same as that in the above embodiment.

  The display device 1 of this embodiment includes a liquid crystal display 7. The liquid crystal display 7 is a device that emits light of various images using a liquid crystal screen. The liquid crystal display 7 is disposed next to the virtual image light source unit 3 in the hood 120. Specifically, the liquid crystal display 7 is disposed so as to emit image light toward the combiner 2 at a position where the left and right central planes 130 intersect. The liquid crystal display 7 is provided substantially parallel to the combiner 2. That is, the optical distance to the combiner 2 is substantially the same between the parts of the image displayed on the liquid crystal screen by the liquid crystal display 7. The liquid crystal display 7 displays information such as the vehicle speed, for example, under the control of the control unit 5 (see FIG. 8).

  The image light emitted from the liquid crystal display 7 is reflected by the combiner 2 to the driver 200 side. Thereby, the virtual image 71 of the image displayed on the liquid crystal display 7 is formed in front of the combiner 2. This virtual image 71 is an image having substantially no length in the depth direction.

  In the present embodiment, in addition to obtaining the same effect as the above embodiment, the virtual image 71 by the liquid crystal display 7 is also displayed, so that more information can be presented to the driver 200.

(Sixth embodiment)
Next, a sixth embodiment of the present invention will be described with a focus on differences from the above embodiment. As shown in FIG. 14, in the present embodiment, two real image display units and two virtual image light source units are provided. If it demonstrates from a real image display part, the right side real image display part 4A which displays the right side real image 45A will be arrange | positioned in the position offset to the right side from the left-right center plane 130 seeing from the driver | operator 200. FIG. The right real image display unit 4A is provided in parallel to the left and right central plane 130. The left side real image display unit 4B that displays the left side real image 45B is disposed at a position offset to the left side from the left and right center plane 130 when viewed from the driver 200. The left real image display unit 4B is provided in parallel to the left and right central plane 130.

  The offset amounts from the left and right center planes 130 of these real image display units 4A and 4B are the same. That is, the two real image display portions 4A and 4B are arranged at symmetrical positions with respect to the left and right central plane 130. The configuration of the real image display units 4A and 4B other than the arrangement position is the same as that of the real image display unit 4 of the first embodiment.

  Next, the virtual image light source unit will be described. The right virtual image light source unit 3A is arranged so as to form a right virtual image 35A having a length in the depth direction on an extension line 131A of the right real image 45A displayed by the right real image display unit 4A. That is, the right virtual image light source unit 3A is also arranged at a position offset from the left and right central plane 130 in the same direction as the right real image display unit 4A. The offset amount from the left and right central plane 130 of the right virtual image light source unit 3A is the same as the offset amount of the right real image display unit 4A. The right virtual image light source unit 3 </ b> A is arranged so that a right virtual image 35 </ b> A extending parallel to the left and right central plane 130 is formed. Specifically, the right virtual image light source unit 3 </ b> A is disposed so that the display image 39 </ b> A of the right virtual image light source unit 3 </ b> A is parallel to the left and right central plane 130.

  The left virtual image light source unit 3B is arranged so as to form a left virtual image 35B having a length in the depth direction on an extension line 131B of the left real image 45B displayed by the left real image display unit 4B. That is, the left virtual image light source unit 3B is also arranged at a position offset from the left and right central plane 130 in the same direction as the left real image display unit 4B. The offset amount from the left and right central plane 130 of the left virtual image light source unit 3B is the same as the offset amount of the left real image display unit 4B. The left virtual image light source unit 3B is arranged so that a left virtual image 35B extending in parallel with the left and right central plane 130 is formed. Specifically, the left virtual image light source unit 3B is arranged so that the display image 39B of the left virtual image light source unit 3B is parallel to the left and right central plane 130.

  As described above, the left and right virtual image light source units 3 </ b> A and 3 </ b> B are arranged at positions offset from the left and right central plane 130, so that the left and right virtual images 35 </ b> A and 35 </ b> B are also formed at positions offset from the left and right central plane 130. Further, the virtual image light source units 3A and 3B are arranged in the hood 120 so that they cannot be seen by the driver 200. The configuration of the virtual image light source units 3A and 3B other than the arrangement position is the same as that of the virtual image light source unit 3 of the first embodiment. That is, the virtual image light source units 3 </ b> A and 3 </ b> B are tilted so that the virtual images 35 </ b> A and 35 </ b> B are formed in a shape in which the display images 39 </ b> A and 39 </ b> B are laid down in the depth direction of the instrument panel upper surface portion 101.

  According to this embodiment, the same effect as the first embodiment can be obtained. In addition, according to the present embodiment, linear images composed of real images 45A and 45B and virtual images 35A and 35B are displayed on the left and right sides of the left and right center plane 130, respectively, according to the first embodiment. Therefore, it is easy to recall the road markings representing the boundary lines on both sides on the road, and it is possible to make it easier for the driver 200 to grasp that the lane keeping is automatically performed by the lane keeping support system 6 (see FIG. 8). .

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described focusing on the differences from the above embodiment. In the present embodiment shown in FIG. 15, linear images 45A, 45B, 35A, and 35B are displayed on both the left and right sides of the left and right central plane 130 as in the sixth embodiment, but these images 45A, 45B, 35A, and 35B are displayed. The display is not parallel to the left and right center plane 130, and gradually approaches the left and right center plane 130 toward the front.

  Specifically, the right real image display unit 4A is disposed at a position offset to the right side of the left and right central plane 130 when viewed from the driver 200 on the front side of the combiner 2. The left real image display unit 4 </ b> B is arranged at a position offset to the left side of the left and right central plane 130 when viewed from the driver 200 on the front side of the combiner 2. These real image display units 4A and 4B are arranged at a slightly oblique angle with respect to the left and right central plane 130. Specifically, the real image display sections 4A and 4B are arranged so as to gradually approach the left and right central plane 130 toward the front. . Further, the offset amounts from the left and right central planes 130 of the real image display units 4A and 4B are symmetrical. The configurations of the real image display units 4A and 4B other than the arrangement positions are the same as those in the first embodiment.

  The right virtual image light source unit 3A is provided so as to form a right virtual image 35A having a length in the depth direction on an extension line 131A of the right real image 45A displayed by the right real image display unit 4A. The left virtual image light source unit 3B is provided so as to form a left virtual image 35B having a length in the depth direction on an extension line 131B of the left real image 45B displayed by the left real image display unit 4B. The left and right virtual images 35 </ b> A and 35 </ b> B are displayed so as to gradually approach the left and right center plane 130 toward the front as described above.

  The left and right virtual image light source units 3A and 3B form virtual image portions close to the combiner 2 in the display images 39A and 39B of the virtual image light source units 3A and 3B in order to form virtual images 35A and 35B having a length in the depth direction. It arrange | positions so that the optical distance to the combiner 2 may become short, so that the part (part with a low height from the installation surface of virtual image light source unit 3A, 3B) to form. In addition, the virtual image light source units 3 </ b> A and 3 </ b> B form virtual image portions close to the combiner 2 in the display images 39 </ b> A and 39 </ b> B of the virtual image light source units 3 </ b> A and 3 </ b> B in order to form oblique virtual images 35 </ b> A and 35 </ b> B with respect to the left and right center plane 130. It arrange | positions so that the distance with the left-right center plane 130 may become large, so that the part to form. In short, in the virtual image light source units 3A and 3B, the portion that forms the virtual image portion close to the combiner 2 in the respective display images 39A and 39B (the portion whose height from the installation surface of the virtual image light source units 3A and 3B is lower) The optical distance is short and the distance from the left and right center plane 130 is large. The configurations of the virtual image light source units 3A and 3B other than the arrangement positions are the same as those in the first embodiment.

  According to the present embodiment, the right straight image composed of the right real image 45A and the right virtual image 35A and the left straight image composed of the left real image 45B and the left virtual image 35B are spread as a whole (having a square shape). ), The road extending ahead of the vehicle can be easily recalled. This makes it easier for the driver 200 to grasp that the lane is maintained automatically.

(Eighth embodiment)
Next, an eighth embodiment of the present invention will be described focusing on the differences from the above embodiment. In the above embodiment, an example in which a linear image is displayed has been described. However, in the present embodiment, as shown in FIG. 16, a real image 47 and a virtual image 37 in which a plurality of arc images 46 and 38 are arranged at intervals in the depth direction. Is displayed.

  Specifically, a real image display unit 4 </ b> C is provided on the instrument panel upper surface portion 101 in front of the combiner 2 so that the driver 200 can see the real image display unit 4 </ b> C. The real image display unit 4 </ b> C displays a plurality of arc images 46 that are arranged at intervals in the depth direction as real images 47. Each arc image 46 is symmetric with respect to the left and right central plane 130 at a point that bisects the arc image 46 in the left and right direction on the left and right central plane 130. Each arc image 46 is displayed such that the inside of the arc faces the driver 200 side. Each arc image 46 has a longer arc length as the arc image 46 on the back side as viewed from the driver 200.

  For example, according to the first embodiment, the real image display unit 4C is provided so as to cover a plurality of light sources, a substrate on which the light sources are mounted, a light source and a housing unit that accommodates the substrate, and the light source. And a diffusing plate that diffuses and emits light. The shape of the diffuser plate is a shape in which a plurality of arcs are connected at intervals in the depth direction so as to correspond to the plurality of arc images 46.

  In the hood 120, a virtual image light source unit 3C that forms a virtual image 37 in which a plurality of arc images 38 are arranged at intervals in the depth direction in front of the combiner 2 is provided. Here, each arc image 38 constituting the virtual image 37 is located on the left and right center plane 130 at the point that bisects the arc image 38 in the left-right direction, like the arc image 46 of the real image display unit 4C. It is symmetrical with respect to the plane 130. Each arc image 38 is displayed so that the inside of the arc faces the driver 200 side. Each arc image 38 has a longer arc length as the arc image 38 on the back side as viewed from the driver 200. The arc length of each arc image 38 is longer than the arc length of the arc image 46 of the real image display portion 4C.

  The virtual image light source unit 3C is configured so as to emit light of a display image 39C in which a plurality of arc images 38 are arranged at intervals. For example, according to the first embodiment, the virtual image light source unit 3C is provided so as to cover a plurality of light sources, a substrate on which the light sources are mounted, a light source and a housing portion that accommodates the substrate, and an upper portion of the light source. And a diffusing plate that diffuses and emits light. The shape of the diffusing plate is a shape in which a plurality of arcs are connected at intervals to correspond to the plurality of arc images 38.

  The virtual image light source unit 3 </ b> C is disposed so as to be inclined so that a virtual image 37 in which a display image 39 </ b> C composed of a plurality of arc images 38 is laid in the depth direction of the instrument panel upper surface 101 is formed.

  The vehicle is equipped with a radar (not shown) that transmits a wave (millimeter wave or the like) for measuring the inter-vehicle distance from the preceding vehicle to the front of the vehicle. The control unit 5 (see FIG. 8) turns on the real image display unit 4 and the virtual image light source unit 3 when the radar is operated.

  According to the present embodiment, when the radar is activated, a plurality of arc images 46 and 38 that gradually increase in arc length as they go in the depth direction are displayed in succession, so that the driver 200 is operating the radar. Easy to grasp.

(Ninth embodiment)
Next, 9th Embodiment of this invention is described centering on a different part from the said embodiment. As shown in FIGS. 17 and 18, a bottomed recess 104 is formed in the instrument panel upper surface portion 101. The recess 104 is formed at the front position of the driver's seat. Specifically, the left and right center plane 130 is located at the center of the recess 104 in the left-right direction. The right and left sides of the recess 104 are symmetric with respect to the left and right center plane 130 with respect to the left and right center plane 130. Moreover, the recessed part 104 is formed in the shape where the left-right width | variety becomes narrow gradually as it goes to the depth side of the depth direction of the instrument panel upper surface part 101. As shown in FIG.

  As shown in FIG. 19, the concave portion 104 has a bottom surface portion 104a and a side surface portion 104b. In the bottom surface portion 104a, one end in the depth direction is connected to the upper end of the front surface portion 102 of the instrument panel 100, and the other end is connected to the lower end of the meter 8 described later.

  The side surface portion 104b is provided at each of the left and right ends of the bottom surface portion 104a, and is provided so as to rise upward from the bottom surface portion 104a. In the side surface portion 104 b, one end in the depth direction is connected to the front surface portion 102 of the instrument panel 100 and the other end is connected to the left and right ends of the meter 8. The lower end of the side surface portion 104b is connected to the bottom surface portion 104a. A space portion 108 is formed in the side surface portion 104b. Specifically, the upper end of the side surface portion 104 b does not reach the position of the instrument panel upper surface portion 101, and is disposed at a position lower than the instrument panel upper surface portion 101 and spaced from the instrument panel upper surface portion 101. Further, an extension portion 106 is provided below the left and right end upper surface portions 101e of the instrument panel upper surface portion 101 so as to protrude from the side surface portion 104b with a space from the left and right end upper surface portions 101e. The bottom surface portion 104a, the side surface portion 104b, and the overhang portion 106 are formed of the same plate material.

  A back plate portion 112 is provided on the back side of the left and right end side top surface portion 101e. The back plate portion 112 is provided so as to contact the back surface of the left and right end side upper surface portion 101e. In addition, a bottom plate portion 107 is provided so as to bridge between the overhang portion 106 and the back plate portion 112 at a position recessed from the side surface portion 104b.

  A space portion 108 is formed by the left and right end side upper surface portions 101 e, the overhang portions 106, the back plate portion 112, and the bottom plate portion 107. That is, the left and right end upper surface portions 101 e, the overhang portions 106, the back plate portion 112, and the bottom plate portion 107 constitute a wall portion of the space portion 108. Each part 101e, 106, 112, 107 which becomes the wall part of the space part 108 is formed of a light-shielding material. The space portion 108 has an opening 109 on the left and right center plane 130 side, and the space other than the opening 109 is a space surrounded by the light shielding portions 101e, 106, 112, and 107. Here, the opening 109 is visible to the driver 200. Further, the width of the space 108 in the direction orthogonal to the paper surface of FIG. 19 (that is, the depth direction of the instrument panel upper surface portion 101) is equal to the width of the recess 104 in the depth direction.

  As shown in FIGS. 17 and 18, real image display portions 4 </ b> A and 4 </ b> B are provided in the space portions 108 formed in the right and left side portions 104 b in the concave portion 104, respectively. The real image display unit 4A arranged on the right side when viewed from the driver 200 is provided as shown in FIG. Specifically, the real image display unit 4A includes a plurality of light sources 41, a substrate 42 on which the light sources 41 are mounted, and a diffusion plate 44 that is provided so as to cover the light emission direction of the light sources 41 and diffuses and emits light from the light sources 41. And having. The light source 41 is, for example, an LED. The substrate 42 is formed in an elongated rectangular shape. The substrate 42 is arranged such that the longitudinal direction is in the depth direction of the instrument panel upper surface portion 101 (that is, the direction orthogonal to the paper surface of FIG. 19), and the mounting surface of the light source 41 is directed to the opening 109 of the space portion 108. The substrate 42 is fixed to the bottom plate portion 107 with screws or the like, for example.

  The plurality of light sources 41 are mounted on a straight line along the longitudinal direction of the substrate 42. The light source 41 is provided so as to emit light toward the opening 109 of the space 108.

  The diffuser plate 44 is formed in a shape equivalent to the opening 109 of the space portion 108, that is, an elongated rectangular shape. The diffusion plate 44 is provided so as to close the opening 109. In FIG. 19, the diffusion plate 44 is provided at a position slightly retracted from the side surface portion 104b. However, the diffusion plate 44 may be provided so as to form the same plane as the side surface portion 104b. A concave portion 150 for installing the diffusion plate 44 is formed in the overhanging portion 106. The lower end of the diffusion plate 44 is fitted in the recess 150. Further, the upper end of the diffusion plate 44 is fixed to the back plate portion 112 or the left and right end side upper surface portion 101e.

  The light from the light source 41 is emitted from the opening 109 via the diffusion plate 44, so that the opening 109 is illuminated. This illumination image is a linear image having a length in the depth direction of the instrument panel upper surface portion 101.

  The configuration of the other real image display unit 4B shown in FIG. 17 is the same as the configuration of the real image display unit 4A.

  The real image display units 4A and 4B are provided according to the seventh embodiment at an oblique angle with respect to the left and right central plane 130. Specifically, the real image display units 4A and 4B are provided so as to gradually approach the left and right center plane 130 as they go to the depth side in the depth direction. Therefore, the real images 45A and 45B displayed by the real image display units 4A and 4B gradually approach the left and right center plane 130 as they go in the depth direction.

  The virtual image light source units 3A and 3B (see FIG. 18) are provided so that the virtual images 35A and 35B are formed on the extension lines 131A and 131B of the real images 45A and 45B by the real image display units 4A and 4B, respectively. As shown in FIG. 18, the virtual image light source units 3A and 3B are disposed in the recess 104, and the rest is the same as in the seventh embodiment. If the concave portion 104 is also considered as a part of the instrument panel upper surface portion 101, it can be said that the virtual image light source unit 3 is also disposed on the instrument panel upper surface portion 101 in this embodiment.

  As shown in FIG. 17, a meter 8 that displays, for example, a vehicle speed, an engine speed, and the like is disposed at the end of the recess 104 in the depth direction. As shown in FIG. 20, the meter 8 includes a cover 81, a dial plate 82, a pointer 83, a substrate 84, an LED 85, a motor 86, a case 87, and a support portion 88.

  The cover 81 is a member disposed on the forefront of the meter 8 and is formed in a substantially rectangular plate shape with a transparent resin such as polycarbonate. The cover 81 constitutes a front surface facing the driver's seat side of the recess 104 and is provided to stand upward from the bottom surface portion 104 a of the recess 104. Specifically, when the portion located on the inner side of the recess 104 in the instrument panel upper surface portion 101 is the inner instrument panel upper surface portion 101c (see FIG. 18), the cover 81 is connected to the rear end and the inner side of the bottom surface portion 104a. It is provided in a form that spans between the front end portion of the instrument panel upper surface portion 101c. The lower end of the cover 81 is fixed to the case 87. The upper end of the cover 81 is fixed to the front end of the back instrument panel upper surface 101c. Specifically, a back member 113 is provided on the back side of the front end of the back instrument panel top surface 101 c, and the upper end of the cover 81 is fixed to the back member 113.

  The dial plate 82 is disposed behind the cover 81. The dial plate 82 has a base material formed of a transparent resin such as polycarbonate, and a light-shielding print layer formed on the front surface or the back surface of the base material. The dial 82 includes a portion where the light-shielding print layer is not partially formed. The portion where the light-shielding print layer is not formed constitutes the illumination portion of the dial plate 82. The illuminating portion of the dial 82 transmits light, and the other portions (portions where the light-shielding print layer is formed) are shielded from light. The illumination part includes a scale part indicated by the pointer 83. The surface of the dial plate 82 constitutes the display surface of the meter 8, and an image by an illumination unit such as a scale unit is displayed.

  The dial 82 is arranged in a state of being inclined in the depth direction. That is, the upper end 82b is located on the back side of the lower end 82a of the dial plate 82. The upper end 82b is positioned higher than the lower end 82a.

  The pointer 83 is provided to be rotatable along the surface of the dial plate 82. Specifically, the pointer 83 has a protrusion 83c that protrudes from the base 83a to the back side. A hole 82c is formed in the dial plate 82 at a position where the protruding portion 83c is provided, and the protruding portion 83c is provided in a state of being inserted into the hole 82c. The protruding portion 83 c is connected to one end of a rotating shaft 831 provided at a right angle to the dial plate 82. The protruding portion 83c and the base portion 83a are disposed at a position closer to the lower end 82a than the upper end 82b of the dial plate 82. When the base 83a rotates around the center line of the rotation shaft 831, the tip 83b of the pointer 83 moves along a semicircular locus (see also FIG. 17). A scale portion is formed along the movement locus of the pointer 83. The scale portion is formed in a semicircular shape like the movement locus of the pointer 83. The pointer 83 is formed of a light guide such as acrylic, and is configured to be illuminable.

  The substrate 84 is disposed behind the dial plate 82 in parallel with the dial plate 82. An LED 85 is mounted on the surface of the board 84 on the dial plate 82 side so as to emit light toward the illuminating portion (scale unit or the like) of the dial plate 82 and the base 83 a of the pointer 83. A motor 86 for driving the pointer 83 is disposed on the back side of the substrate 84. The motor 86 is connected to the end of the rotating shaft 831 opposite to the side to which the hands 83 are connected, and rotates the rotating shaft 831.

  The case 87 is disposed on the lower side of the back instrument panel upper surface portion 101 c and accommodates or supports each portion constituting the meter 8. The case 87 is made of a light-shielding resin such as PP (polypropylene) resin or ABS resin.

  The support portion 88 is a portion that supports the dial plate 82 and the substrate 84. The support portion 88 is made of a light-shielding resin such as PP (polypropylene) resin or ABS resin.

  The meter 8 has a control unit that controls the LED 85 and the motor 86. This control unit may be the same as the control unit 5 (see FIG. 8) that controls the real image display units 4A and 4B and the virtual image light source units 3A and 3B, or may be provided separately from the control unit 5. . The control unit may be mounted on the substrate 84 or may be provided in a portion other than the substrate 84.

  When operating the meter 8, the control unit of the meter 8 turns on the LED 85 to illuminate the illumination unit of the dial 82 and the pointer 83. In addition, the control unit acquires a detection value of a sensor that detects, for example, the vehicle speed, the engine speed, and the like, and rotates the motor 86 so that the pointer 83 indicates the detection value.

  The combiner 2 is provided so as to stand upward from an end on the near side of the back-side instrument panel upper surface 101c. That is, the combiner 2 is provided at a position in the depth direction equivalent to the cover 81 of the meter 8. As a result, the cover 81 is disposed below the combiner 2.

  The combiner 2 has an attachment portion 22 at the lower portion, and the attachment portion 22 is attached to the back instrument panel upper surface portion 101c. Specifically, the attachment portion 22 is formed so as to protrude substantially perpendicular to the incident surface 21 of the combiner 2 in the direction of the back side of the combiner 2. The attachment portion 22 is attached so as to be sandwiched between the back instrument panel upper surface portion 101 c and the back surface member 113. Thus, the combiner 2 is attached in the state which always stood up with respect to the back | inner instrument panel upper surface part 101c.

  Hereinafter, the effect of this embodiment will be described. According to the present embodiment, in addition to the effects of the above-described embodiment, the right straight image formed by the right real image 45A and the right virtual image 35A and the left straight image formed by the left real image 45B and the left virtual image 35B are as follows: Since, as a whole, an end-spread (C-shaped) image is formed, a road extending in front of the vehicle can be easily recalled. This makes it easier for the driver 200 to grasp that the lane is maintained automatically.

  Further, the real image display portions 4A and 4B are provided on the side surface portion 104b of the concave portion 104, that is, provided so as to emit the light of the real images 45A and 45B in the left-right direction of the vehicle. Since it is covered with the left and right end side upper surface portions 101e, it is possible to suppress the light from the real image display portions 4A and 4B from traveling in the direction of the front window 105. According to this, it can suppress that the real images 45A and 45B which the real image display parts 4A and 4B display are reflected on the front window 105.

  Further, since the meter 8 is disposed on the back side of the instrument panel 100 in the instrument panel upper surface portion 101 from the front surface portion 102, the driver when viewing the meter 8 as compared with the case where the meter 8 is disposed on the front surface portion 102. The line-of-sight movement of 200 can be reduced, and the visibility of the meter 8 can be improved. Furthermore, by arranging the meter 8 on the back side, it is possible to easily secure a space for arranging the virtual image light source unit 3 around the front surface portion 102 of the instrument panel 100.

  In addition, since the dial plate 82 of the meter 8 is disposed in a tilted state in the depth direction, the dial plate 82 having a larger display surface can be employed as compared with the case where the dial plate 82 is not tilted. According to this, the display of the meter 8 can be shown large.

  In addition, since the cover 81 of the meter 8 is disposed under the combiner 2, a sense of unity between the combiner 2 and the meter 8 can be obtained.

(10th Embodiment)
Next, a tenth embodiment of the present invention will be described with a focus on portions different from the above embodiments and portions supplementing the above embodiments. Hereinafter, the vehicle on which the display device 1 is mounted is referred to as the host vehicle.

  In the present embodiment shown in FIGS. 21 and 22, linear images 35A, 35B, 45A, and 45B displayed on the left and right sides of the left and right center plane 130 in accordance with the seventh embodiment are the traveling of the vehicle on the road. It becomes a marking figure representing a road marking (for example, a white line) that divides the lane. At this time, on the front side of the right virtual image 35A viewed from the driver 200 in the host vehicle, a right real image 45A of a marking figure having continuity with the virtual image 35A on the extension line 131A is displayed on the instrument panel upper surface 101. Is displayed in a straight line by the real image display unit 4A, and in front of the left virtual image 35B viewed from the driver 200 in the host vehicle, an indication having continuity with the virtual image 35B on the extension line 131B The left real image 45B of the figure is displayed linearly by the real image display unit 4B on the instrument panel upper surface 101.

  Here, in particular, FIGS. 21 and 22 illustrate a plurality of linearly displayed virtual images 35A and 35B according to FIG. 17 of the ninth embodiment, but in FIG. 15 of the seventh embodiment. Accordingly, the virtual images 35A and 35B may be displayed in a single continuous straight line (not shown). As shown in FIG. 23, these left and right virtual images 35A and 35B are displayed on the display image 39A and 39B of the corresponding virtual image light source units 3A and 3B, respectively. By being laid in the depth direction as viewed from 200, an image is formed in a shape having a length in the same direction.

  Specifically, a part of the upper space 101f of the instrument panel upper surface 101 including the space 124 of the hood 120 emits the light 140 of the display images 39A and 39B from the virtual image light source units 3A and 3B as the light emitting units to the combiner 2. A display optical path 143 to be guided is configured. That is, the hood 120 and the instrument panel upper surface portion 101 as an optical path forming portion form a display optical path 143 that allows the light 140 from the virtual image light source units 3A and 3B to enter the combiner 2 directly. Here, the display optical path 143 is formed in front of the combiner 2 disposed on the near side of the front window 105 when viewed from the driver 200.

  The virtual images 35A and 35B of the display images 39A and 39B are imaged in the depth direction viewed from the driver 200 by the light guiding action (that is, the light guide action) through the display light path 143, thereby displaying the image. An oblique image plane 145 that is inclined with respect to the optical axis 144 of the optical path 143 is formed. Thereby, the image plane (namely, imaging plane) 145 on which the virtual images 35 </ b> A and 35 </ b> B are formed is inclined in the depth direction (that is, the back side) away from the driver 200 as it goes upward.

  Such laying and tilting is performed with respect to the equidistant position 30 where the optical distance from the exit surface 34a forming the display images 39A and 39B of the virtual image light source units 3A and 3B to the entrance surface 21 of the combiner 2 is equal. It relies on 34a being inclined and arranged according to the first to ninth embodiments. Note that the above-described laying and tilting are not only established when the adjustment mechanism described in the first embodiment is not provided, but also when the adjustment mechanism is provided, fine adjustment of the imaging positions of the virtual images 35A and 35B. It is established within the range.

  Hereinafter, the effect of this embodiment will be described. According to the present embodiment, the front-view shape of the display images 39A and 39B is not displayed as it is, but the virtual images of the display images 39A and 39B are displayed from the virtual image light source units 3A and 3B by image formation laid down in the depth direction. The optical axis 144 of the display optical path 143 is tilted obliquely. That is, since a virtual image display having a length in the depth direction of the real space can be performed, a sense of depth can be obtained as compared with the conventional pseudo depth expression.

  Further, the display images 39A and 39B are reflected by the combiner 2 on the nearer side than the front window 105 of the host vehicle as viewed from the driver 200, so that virtual images 35A and 35B laid down in the depth direction can be formed. According to this, even when the combiner 2 whose physique is limited is a virtual image forming member, it is possible to realize a virtual image display that gives a sense of depth. Moreover, according to the virtual image light source units 3A and 3B tilted with respect to the equidistant position 30 where the optical distances to the combiner 2 are equal, it is possible to surely lay the virtual image display in the depth direction and give a sense of depth.

  In addition, the real images 45A and 45B of the marking graphic having continuity with the virtual images 35A and 35B are displayed on the near side of the virtual images 35A and 35B of the display images 39A and 39B, which are the marking graphics representing road markings, respectively. According to this, the sense of depth of these virtual images 35A and 35B can be emphasized. In addition, the effect of the above this embodiment can be exhibited similarly also in the 1st-9th embodiment demonstrated previously.

(Eleventh embodiment)
Next, an eleventh embodiment of the present invention will be described centering on differences from the above embodiment. In this embodiment shown in FIGS. 24 and 25, in addition to the display configuration of the tenth embodiment, the liquid crystal display 7 of the fifth embodiment that displays a virtual image 71 is added.

  The liquid crystal display 7 as the second light emitting unit shown in FIG. 25 is disposed between the virtual image light source units 3A and 3B as the first light emitting units that display the left and right virtual images 35A and 35B in the hood 120. As shown in FIG. 26, the liquid crystal display 7 converts the light of the image displayed on the liquid crystal screen 72 as the light 146 of the display image 70 that is different from the display figures 39A and 39B of the virtual image light source units 3A and 3B. Exit toward The emitted light 146 from the liquid crystal display 7 is reflected by the combiner 2 toward the driver 200, so that a virtual image 71 of the display image 70 is formed in front of the combiner 2.

  As a result, as shown in FIG. 24, in the present embodiment, a vehicle figure representing the host vehicle with a schematic picture or a photograph is displayed as a virtual image 71 of the display image 70. At this time, as long as the virtual image 71 is on the left and right center plane 130 of the real image display units 4A and 4B as shown in FIGS. 24 and 25, the virtual image 71 corresponds to the left and right positions of the host vehicle in the traveling lane among the virtual images 35A and 35B. It is displayed at the location. At the same time, as shown in FIG. 26, the virtual image 71 is substantially the same as the virtual image 71 in the depth direction when viewed from the driver 200, as shown in FIG. The image is formed into a shape having no substantial length in the direction.

  Specifically, a part of the upper space 101 f of the instrument panel upper surface portion 101 including the space 124 of the hood 120 constitutes a display optical path 147 for guiding the light 146 of the display image 70 from the liquid crystal display 7 to the combiner 2. . In other words, the hood 120 and the instrument panel upper surface portion 101 as the optical path forming unit transmit the light 146 from the liquid crystal display 7 to the combiner 2 in addition to the first display optical path 143 similar to the display optical path 143 described in the tenth embodiment. A second display optical path 147 for direct incidence is formed. Here, the combiner 2 is disposed not only on the first display light path 143 from each of the virtual image light source units 3A and 3B but also on the second display light path 147 from the liquid crystal display 7 in the front view of the driver 200. ing.

  The virtual image 71 of the display image 70 is formed by the light guiding action (that is, the light guiding action) through the second display light path 147 as described above so that the laying state in the depth direction viewed from the driver 200 is substantially zero. Thus, an image plane 149 substantially perpendicular to the optical axis 148 of the second display optical path 147 is configured. As a result, the laying state in the depth direction of the image plane (that is, the imaging plane) 149 on which the virtual image 71 of the display image 70 to be the second display image is formed is the same as that of the display images 39A and 39B to be the first display images. The virtual images 35 </ b> A and 35 </ b> B are smaller than the degree of laying in the depth direction of the image plane 145 formed in the same manner as in the tenth embodiment (see FIG. 23).

  Such a laying condition is such that the screen 72 is incident according to the fifth embodiment at an equal distance position where the optical distance from the liquid crystal screen 72 forming the display image 70 of the liquid crystal display 7 to the incident surface 21 of the combiner 2 becomes equal. Rely on being arranged substantially parallel to the surface 21. Note that the above-described laying condition is established when the adjustment mechanism described in the first embodiment is not provided, and of course, when the adjustment mechanism is provided, the imaging positions of the virtual images 35A, 35B, and 71 are fine. It is established within the adjustment range.

  Hereinafter, the effect of this embodiment will be described. According to the present embodiment, the depth of the image plane 149 in which the virtual image 71 of the display image 70 is formed in the depth direction is the depth of the image plane 145 in which the virtual images 35A and 35B of the display images 39A and 39B are formed. Smaller than laying in the direction. Therefore, the sense of depth of the virtual images 35A and 35B can be enhanced with the virtual image 71 as a reference.

  Here, the virtual images 35A and 35B of the display images 39A and 39B, which are the marking figures representing the road markings, are laid down in the depth direction with respect to the virtual image 71 of the display image 70 which is the vehicle figure representing the host vehicle. Can be displayed. As a result, the driver 200 can intuitively recall the positional relationship between the host vehicle and the lane extending in the front-rear direction, and can recognize the operating state of the lane keeping function. Moreover, the real images 45A and 45B of the sign graphic having continuity with the virtual images 35A and 35B are displayed on the front side of the virtual images 35A and 35B of the sign graphic lying in the depth direction, as in the tenth embodiment. Thus, the road marking can be easily recalled intuitively, and the operation state recognizability of the lane keeping function can be enhanced.

  For example, by displaying a virtual image 71 of the display image 70 that is a vehicle figure representing another vehicle such as a preceding vehicle, the operating state of the acceleration / deceleration function for the other vehicle described in the first embodiment can be determined by the driver. 200 may be recognized.

(Twelfth embodiment)
Next, a twelfth embodiment of the present invention will be described focusing on differences from the above embodiment. In the present embodiment shown in FIGS. 27 and 28, the front window 105 of the vehicle functions as a virtual image forming member instead of providing the combiner 2 in the eleventh embodiment.

  Specifically, the front window 105 reflects the light 140 from the virtual image light source units 3A and 3B toward the driver 200, thereby forming the virtual images 35A and 35B of the display images 39A and 39B in front of the front window 105. . Further, the front window 105 reflects the light 146 from the liquid crystal display 7 toward the driver 200, thereby forming a virtual image 71 of the display image 70 in front of the front window 105.

  Therefore, the front window 105 of the present embodiment is disposed on the first display light path 143 from each of the virtual image light source units 3A and 3B and on the second display light path 147 from the liquid crystal display 7 in the front view of the driver 200. Yes. At the same time, the front window 105 is configured so that a front scenery of the vehicle can be visually recognized. However, the first and second display optical paths 143 and 147 of the present embodiment are respectively configured by a part of the internal space 100 a that opens to the instrument panel upper surface portion 101 in the instrument panel 100.

  On the first display light path 143 from each of the virtual image light source units 3A and 3B, a magnifying reflector 90 is provided that enlarges the display images 39A and 39B and guides them to the front window 105 while changing the direction of the light 140. Yes. Further, on the second display optical path 147 from the light 146 from the liquid crystal display 7, an enlargement reflecting mirror 91 is arranged to enlarge the display image 70 and guide it to the front window 105 while changing the direction of the light 146. Yes. The magnifying reflectors 90 and 91 described above may be configured so as to be drivable so as to change the reflection direction of the light 140 and 146, thereby constituting the adjustment mechanism described in the first embodiment.

  Under such a configuration, the virtual images 35A and 35B of the display images 39A and 39B are formed in the depth direction as described in the tenth embodiment by the light guiding action through the first display optical path 143. An oblique image plane 145 that is inclined with respect to the optical axis 144 of the first display optical path 143 is formed. Further, the virtual image 71 of the display image 70 is formed by the light guiding action through the second display optical path 147 so that the laying state in the depth direction becomes substantially 0 as described in the eleventh embodiment, so that the first An image plane 149 substantially perpendicular to the optical axis 148 of the two display optical path 147 is formed.

  Accordingly, also in the present embodiment, the depth of the image plane 149 on which the virtual image 71 is formed in the depth direction is smaller than the depth of the image plane 145 on which the virtual images 35A and 35B are formed in the depth direction. . Such a laying condition is established when the adjusting mechanism constituted by the magnifying reflecting mirrors 90, 91, etc. is not provided. Of course, when the adjusting mechanism is provided, the imaging positions of the virtual images 35A, 35B, 71 are provided. It is established within the fine adjustment range.

  According to the present embodiment, the display images 39A, 39B, and 70 are reflected by the front window 105 of the host vehicle as viewed from the driver 200, whereby virtual images 35A, 35B, and 71 laid in the depth direction can be formed. . According to this, even if the combiner 2 is omitted as a virtual image forming member, it is possible to realize a virtual image display that gives a sense of depth by utilizing the front window 105 of the host vehicle.

(Other embodiments)
In addition, this invention is not limited to the said embodiment, A various change is possible to the limit which does not deviate from description of a claim.

  For example, in the first to eleventh embodiments, the virtual image light source units 3, 3 </ b> A, 3 </ b> B, and 3 </ b> C may be disposed in the instrument panel 100. In this case, a hole for emitting light from the virtual image light source units 3, 3A, 3B, 3C is formed in the instrument panel upper surface portion 101. Further, in this case, the light from the virtual image light source units 3, 3A, 3B, 3C is reflected toward the combiner 2 between the virtual image light source units 3, 3A, 3B, 3C and the combiner 2 according to the twelfth embodiment. A reflecting mirror may be provided.

  In the first to tenth embodiments, the virtual image display may be realized by reflecting the light 140 from the virtual image light source units 3, 3 </ b> A, 3 </ b> B, and 3 </ b> C by the front window 105 according to the twelfth embodiment. In the fifth embodiment, the virtual image display may be realized by reflecting the light 146 from the liquid crystal display 7 by the front window 105 according to the twelfth embodiment.

  In the twelfth embodiment, the liquid crystal display 7 for displaying the display image 70 as the virtual image 71 may not be provided according to the first to fourth and sixth to eleventh embodiments. In the twelfth embodiment, the virtual image light source units 3 </ b> A and 3 </ b> B may be disposed on the instrument panel upper surface portion 101.

  In the first to twelfth embodiments, the real image display units 4, 4A, 4B, and 4C and the virtual image light source units 3, 3A, 3B, and 3C may be configured to be able to change the color of the emitted light according to the situation. . In this case, as the light source of the real image display units 4, 4A, 4B, and 4C and the virtual image light source units 3, 3A, 3B, and 3C, a multicolor LED that can emit light of a plurality of colors with one LED may be employed. A plurality of single-color LEDs that emit different colors may be employed. This makes it easier for the driver 200 to grasp each situation. For example, white light is emitted during normal times, and red light is emitted during alerts, so that the driver 200 can easily grasp that the current situation is a situation to be noted.

  In the first to twelfth embodiments, the real image display units 4, 4A, 4B, and 4C and the virtual image light source units 3, 3A, 3B, and 3C may be configured by an image display such as a liquid crystal display or an organic EL display, for example. For example, it may be configured by an image projector using a micro electro mechanical system (MEMS) or a digital mirror device (DMD). In the seventh and twelfth embodiments, other types of displays or projectors may be employed instead of the liquid crystal display 7. In these cases, for example, a linear image as in the first to seventh and ninth to twelfth embodiments is displayed in a certain situation, and an arc-shaped image as in the eighth embodiment is displayed in another situation. The real images 45, 45A, 45B, and 47 and the virtual images 35, 35A, 35B, 37, and 71 to be displayed may be changed depending on the situation.

  In the first to seventh and ninth to twelfth embodiments, the linear images, and the real images 45, 45A, 45B, and 47 and the virtual images 35, 35A, 35B, and 37 that are displayed as arc-shaped images in the eighth embodiment. As long as the real image and the virtual image have continuity in the depth direction, an image having a shape other than a linear shape and an arc shape may be displayed.

  In the first to twelfth embodiments, real image display and virtual image display may be realized at a place other than the instrument panel upper surface 101 (for example, in a combination meter). In the first to twelfth embodiments, virtual image display without real image display may be realized by not providing the real image display units 4, 4 </ b> A, 4 </ b> B, and 4 </ b> C.

In the first to twelfth embodiments, the example of realizing the real image display and the virtual image display in the front visual field of the driver 200 has been described. However, the real image display and the virtual image display are performed in the front visual field of an occupant other than the driver 200. It may be realized. In the first to twelfth embodiments, real image display and virtual image display may be realized in a field of view other than the front field of view of the driver 200 (for example, a side field of view and a rear field of view).

  In the depth direction of the eleventh and twelfth embodiments, the image plane 149 on which the virtual image 71 is imaged is laid in the depth direction within a range that is smaller than the level of the image plane 145 on which the virtual images 35A and 35B are imaged. May be. In the depth direction of the eleventh and twelfth embodiments, the degree of laying of the image plane 145 on which the virtual images 35A and 35B are formed may be smaller than the degree of laying of the image plane 149 on which the virtual image 71 is formed. In this case, the liquid crystal display 7 corresponds to the first light emitting unit, and the virtual image light source units 3A and 3B correspond to the second light emitting unit.

  In the first to eleventh embodiments, a total reflection mirror that totally reflects light from the virtual image light source units 3, 3A, 3B, and 3C toward the driver 200 and blocks light from the front scenery is adopted as the combiner 2. May be. According to this, the visibility of the virtual images 35, 35A, 35B, 37, 71 can be improved. In the fifth to eleventh embodiments, a combiner 2 according to any one of the second to fourth embodiments may be employed. In the ninth embodiment, the cover 81 of the meter 8 and the combiner 2 may be integrally formed of the same member.

  In addition to the above, the present invention provides a combiner disposed on the front side of the vehicle rear window as viewed from the viewer (that is, the vehicle front side), or a display device that realizes virtual image display using the rear window. May be applied. The present invention may also be applied to a display device mounted other than a vehicle, such as an aircraft or a ship.

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Combiner (virtual image imaging member)
3, 3A, 3B, 3C Virtual image light source unit (light emitting unit / first light emitting unit)
7 Liquid crystal display (second light emitting part)
39, 39A, 39B, 39C, 70 Display image 35, 35A, 35B, 37, 71 Virtual image 4, 4A, 4B, 4C Real image display unit 45, 45A, 45B, 47 Real image 105 Front window (virtual image imaging member)
200 Driver (viewer)

Claims (6)

A light emitting section (3A, 3B) that emits light of a display image (39A, 39B) ;
An optical path forming unit (120, 101) for guiding light from the light emitting unit to form a display optical path (143), and a display device mounted on the host vehicle,
A first light emitting unit as the light emitting unit that emits light of a first display image as the display image;
A second light emitting unit (7) that emits light of a second display image (70) different from the first display image;
A real image display unit (4A, 4B) arranged in the visual field of the viewer and displaying a real image (45A, 45B) having a length in the depth direction,
The optical path forming unit guides light from the first light emitting unit to form a first display optical path as the display optical path, and guides light from the second light emitting unit to provide a second display optical path (147). Form the
A virtual image forming member (2, 105) disposed in the visual field of the viewer (200) and on the first display optical path and the second display optical path from the first light emitting part and the second light emitting part . By reflecting light to the viewer side, a virtual image (35A, 35B) of the first display image and a virtual image (71) of the second display image are formed in front ,
Virtual image of the first display image by being imaged laid in a depth direction as viewed from the viewer, to construct an image plane oblique inclined with respect to the optical axis (144) of the display optical path (145) ,
The depth of the image plane on which the virtual image of the second display image is formed is smaller than the depth of the image plane on which the virtual image of the first display image is formed in the depth direction. ,
The first display image is a marking figure representing a road marking that divides a traveling lane of the host vehicle,
The second display image is a vehicle graphic representing the host vehicle or another vehicle,
The real image display unit displays the real image of the marking graphic having continuity with the virtual image on the near side of the virtual image of the first display image viewed from the viewer in the host vehicle . The combiner (2) as the virtual imaging member wherein it is disposed on the front side of the window (105) of the vehicle when viewed from the front SL viewer, the display device according to claim 1, further comprising. The display device according to claim 2 , wherein the light emitting unit is disposed to be inclined with respect to an equidistant position (30) at which an optical distance to the combiner is equal. The said real image display part is a display apparatus of any one of Claims 1-3 arrange | positioned in the upper surface part (101) of the instrument panel (100) ahead of a driver's seat in the said own vehicle. A light-shielding hood (120) that is provided so as to cover the light-emitting part on the upper surface part, has an opening in the direction of the virtual image forming member, and closes a direction other than the direction of the virtual image forming member , Prepare,
The display device according to claim 4 , wherein the light emitting unit is disposed closer to the viewer than the real image display unit in the upper surface unit. The virtual imaging member is in a shape that forms the enlarged virtual the display image, the display device according to any one of claims 1 to 5, which is formed.

Images