JP6136884B2 - Vehicle display device - Google Patents

Description

  The present invention relates to a vehicle display device mounted in an instrument panel in a vehicle having a front windshield and an instrument panel.

  2. Description of the Related Art Conventionally, a vehicular display device including a display device having a first display area and a second display area is known. For example, in the vehicle display device described in Patent Document 1, one of the display images displayed on the two display surfaces is projected onto the front windshield of the vehicle, and the other is projected onto the half mirror that is a display in the instrument panel. . This half mirror is displayed superimposed on the transmitted light from the meter display board as the background, but as a modification, a simple mirror that does not transmit on both sides, that is, a mirror that restricts transmission of the background is disclosed.

JP 2006-103589 A

  Now, the present inventors project the second display image displayed in the second display area of the two display surfaces onto the front windshield of the vehicle, and display the first virtual image so as to be visible from inside the vehicle. At the same time, the inventors have arrived at a technique for projecting a first display image displayed in the first display area onto a combiner and displaying the first virtual image so as to be visible from within the vehicle.

  However, each virtual image is made visible from the inside of the vehicle by the vehicle display device mounted in the instrument panel having only a limited space. For this purpose, since the angle to be projected onto the front windshield or combiner from the display side is determined by the positional relationship between the viewing area and the front windshield or combiner, it is difficult to lay out so that the two optical systems do not interfere with each other. And in this layout, about the 1st display image and the 2nd display image on a display surface, as shown by the arrow in patent documents 1, if the up direction is the same, each virtual image which can be visually recognized from a vehicle occupant will be, There is a high probability that the upward direction is different. As a result, it is difficult to visually recognize the virtual image, and the user feels uncomfortable.

  The present invention has been made in view of the problems described above, and an object of the present invention is to provide a vehicle display device in which a virtual image can be easily viewed.

One of the disclosed inventions is a vehicle display device mounted on an instrument panel in a vehicle having a front windshield and an instrument panel, and is divided into a first display area and a second display area. By projecting a display device having a display surface, a combiner disposed in the vehicle, and a first display image displayed in the first display area onto the combiner, the first virtual image is displayed so as to be visible from within the vehicle. a first optical system, the second display image displayed on the second display area, by projecting the front windshield, and a second optical system for visibly displaying a second virtual image from the vehicle, indicator in the same display surface, comprising: a direction on the second display image, and control means for the direction on the first display image to display the first display image and the second display image differently, a con Ina is disposed in an instrument panel, a second optical system, the second display image, characterized that you projected upward position than combiner in the windshield.

  According to such an invention, at least one of the front windshield on which the second virtual image displayed so as to be visible from inside the vehicle is projected and the combiner on which the first virtual image displayed so as to be visible from inside the vehicle is projected. Two types of virtual images can be displayed. According to this, by controlling the display state utilizing the features of the front windshield and the combiner, it is possible to display a virtual image that is easy to visually recognize in various situations. Further, the first display image in the first display area and the second display image in the second display area are different in the upward direction. According to this, even if it is the display apparatus for vehicles mounted in an instrument panel, it becomes possible to match | combine the upper direction of two types of virtual images visually recognized by a vehicle passenger. As described above, it is possible to provide a vehicle display device in which a virtual image is easily visible.

  In addition, in another one of the disclosed inventions, the combiner regulates the transmission of the background that is visible from within the vehicle.

  According to such an invention, the first virtual image can be displayed with high contrast because the transmission of the background visible from the vehicle by the combiner is restricted. On the other hand, the second virtual image can be displayed overlapping the background. From the above, it is possible to display a virtual image that is easy to visually recognize in various situations by utilizing the features of the front windshield and the combiner.

  In addition, in another one of the disclosed inventions, the control unit matches the upper direction of the first display image with the longitudinal direction or the short direction of the display surface, and the upper direction of the second display image is changed to the display surface. It is possible to control in an oblique direction with respect to the longitudinal direction.

  According to such an invention, on the display surface, the first display image whose upper direction coincides with the longitudinal direction or the short direction which is the pixel arrangement direction is projected onto the combiner with high image quality. Therefore, since the contrast is high by restricting the transmission of the background, the vehicle occupant can visually recognize the high-quality first virtual image in the combiner where the quality of the image is conspicuous. On the other hand, on the display surface, the second display image whose upper direction is oblique with respect to the longitudinal direction is projected onto the front windshield. Therefore, in the front windshield where the image quality is less noticeable because the contrast is lowered by overlapping with the background, the vehicle occupant has a lower image quality than the first virtual image, but the upper direction is aligned with the first virtual image. The second virtual image can be visually recognized. As described above, it is possible to provide a vehicle display device in which a virtual image is easily visible.

It is a schematic diagram which shows the mounting state to the vehicle of the display apparatus for vehicles in 1st Embodiment. It is a side view which shows a part of display apparatus for vehicles in 1st Embodiment, and a front windshield. It is a perspective view which shows a part of display apparatus for vehicles in 1st Embodiment. It is a top view which shows a part of display apparatus for vehicles in a 1st embodiment. It is a front view which shows a display surface for demonstrating the 1st display image and 2nd display image in 1st Embodiment. It is a perspective view which shows the indicator in 1st Embodiment, a hood, etc. It is a perspective view which shows the combiner in 1st Embodiment. It is a perspective view for demonstrating rotation of the combiner in 1st Embodiment. It is a figure which shows the example of the 1st virtual image displayed in 1st Embodiment, and a 2nd virtual image. It is a block diagram for demonstrating the control circuit in 1st Embodiment. It is a flowchart which shows operation | movement of the control circuit in 1st Embodiment. It is a figure which shows the example of the 1st virtual image displayed in 2nd Embodiment, and a 2nd virtual image. It is a front view which shows a display surface for demonstrating the 1st display image in 2nd Embodiment, a 2nd display image, etc. FIG. It is a figure which shows the example of the 1st virtual image displayed in 3rd Embodiment, and a 2nd virtual image. It is a flowchart which shows operation | movement of the control circuit in 4th Embodiment. It is a figure which shows the example of the 1st virtual image displayed in 4th Embodiment, and a 2nd virtual image. It is a flowchart which shows operation | movement of the control circuit in 5th Embodiment. It is a figure which shows the example of the virtual image displayed in 5th Embodiment, Comprising: It is a case where (a) a 1st virtual image is displayed and (b) a 2nd virtual image is displayed.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the drawings. In addition, the overlapping description may be abbreviate | omitted by attaching | subjecting the same code | symbol to the corresponding component in each embodiment. When only a part of the configuration is described in each embodiment, the configuration of the other embodiment described above can be applied to the other part of the configuration. In addition, not only combinations of configurations explicitly described in the description of each embodiment, but also the configurations of a plurality of embodiments can be partially combined even if they are not explicitly specified unless there is a problem with the combination. .

(First embodiment)
As shown in FIG. 1, a vehicle display device 100 according to a first embodiment of the present invention is mounted in an instrument panel 4 in a vehicle 2 having a front windshield 3 and an instrument panel 4. The vehicle display device 100 allows the vehicle occupant who has the eye point 6 in the visual recognition area 5 to visually recognize the virtual images 7 and 8 from the inside of the vehicle 2, so that the vehicle occupant is able to Or vehicle information images, such as road information, safety information, or visual field auxiliary information, can be recognized.

  The front windshield 3 of the vehicle 2 is formed in a plate shape made of a translucent glass substrate or the like, and is held integrally with the vehicle 2. A surface on the vehicle rear side of the front windshield 3 forms a projection surface 3a on which the display images 14 and 16 projected from the vehicle display device 100 are projected as light, such as a curved concave surface or a flat flat surface. ing. The front windshield 3 may have an angle difference for suppressing the optical path difference between the projection surface 3a on the vehicle rear side and the surface on the vehicle front side, or a vapor deposition film or a film may be used. It may be provided on the projection surface 3a. In addition, the instrument panel 4 of the vehicle 2 is attached to the lower side of the vehicle with respect to the front windshield 3 in the vehicle 2, and an exterior is formed by a light-shielding member such as a synthetic resin.

  In the vehicle display device 100, two types of virtual images, the first virtual image 7 and the second virtual image 8, are displayed so as to be visible from within the vehicle 2. The first virtual image 7 is projected in the vehicle 2 by the first display image 14 displayed in the first display area 12b of the display 10 being projected onto the combiner 20 of the vehicle display device 100 by the first optical system 30. It is a virtual image visually recognized from If it supplements, the 1st virtual image 7 imaged ahead of the vehicle with respect to the combiner 20 will be displayed with respect to the combiner 20 from the visual recognition area 5 behind the vehicle. The second virtual image 8 is visually recognized from inside the vehicle 2 when the second display image 16 displayed in the second display area 12c of the display 10 is projected onto the front windshield 3 by the second optical system 40. It is a virtual image. If it supplements, the 2nd virtual image 8 imaged ahead of the vehicle with respect to the front windshield 3 will be displayed with respect to the front windshield 3 from the visual recognition area 5 behind the vehicle. In FIG. 1, the upward direction of the first virtual image 7 and the upward direction of the second virtual image 8 are shown as arrows (vectors).

  The visual recognition area 5 is an area in which the virtual images 7 and 8 can be visually recognized in the vehicle 2. The visual recognition area 5 is designed in consideration of an eyelip which is a space area in which the eye point 6 of the vehicle occupant seated in the seat 9 can exist.

  Here, the front of the vehicle in the present embodiment indicates a direction in which a vehicle occupant seated in the seat 9 faces. The vehicle rear indicates the opposite direction of the vehicle front. The downward direction of the vehicle indicates a direction in which gravity is generated when the vehicle 2 is on a flat ground. The upper side of the vehicle indicates the opposite direction of the lower side of the vehicle. The left side of the vehicle indicates the left direction viewed from the vehicle occupant facing the front of the vehicle, and the right side of the vehicle indicates the right direction viewed from the vehicle occupant facing the front of the vehicle.

  Further, the upward direction of the image in the present embodiment indicates a direction in which the viewer of the image can visually recognize the image with the least discomfort when the viewer's head is aligned with the upward direction of the image.

  Hereinafter, a specific configuration of the vehicle display device 100 will be described in detail. The vehicle display device 100 includes a display 10, a combiner 20, a first optical system 30, a second optical system 40, a control circuit 50, and the like.

  As shown in FIGS. 2 to 6, the display device 10 projects light source light from an internal light source (not shown) toward a liquid crystal panel 12 provided on the display surface. As shown in FIG. 5, the liquid crystal panel 12 has a rectangular display surface 12a in which liquid crystal pixels (not shown in detail) are arranged in a two-dimensional direction. The liquid crystal panel 12 is electrically connected to a control circuit 50 described later, and can form display images 14 and 16 by controlling each liquid crystal pixel. The display surface 12a is divided into a first display area 12b and a second display area 12c. That is, the first display area 12b and the second display area 12c are set by virtually dividing the area of the display surface 12a in the longitudinal direction, and the first display area 12b displays the first display image 14. The second display area 12c displays the second display image 16. In this manner, two display images 14 and 16 are displayed on the same display surface 12a of one display device 10. Here, the size of the display surface 12a of the liquid crystal panel 12 in the present embodiment is, for example, 92.16 mm × 34.56 mm (3.9 inches), and the number of liquid crystal pixels is, for example, 1280 dots × 480 dots.

  For example, 46.08 mm × 34.56 mm including one end in the longitudinal direction of the display surface 12 a is set in the first display area 12 b. For example, a position P1 of 10.00 mm from one end to the other end in the longitudinal direction corresponds to the central part of the reflecting surface of the combiner described in detail later. The first display image 14 is displayed, for example, with the position P1 at the center of the image and the upward direction U1 of the image toward one end in the longitudinal direction. Furthermore, when the display surface 12a is viewed from the outside of the display device 10 as shown in FIG. 5, the first display image 14 is displayed by inverting the left-right direction of the image.

  On the other hand, for example, 46.08 mm × 34.56 mm including the other end in the longitudinal direction, which is a portion excluding the first display area 12b on the display surface 12a, is set as the second display area 12c. For example, a position P2 of 27.04 mm from the other end in the longitudinal direction toward the one end is a position corresponding to the center of the projection location on the front windshield 3. The second display image 16 is displayed with the position P2 as the center of the image, for example. Under the control of the control circuit 50, the upward direction U2 of the second display image 16 is different from the upward direction U1 of the first display image 14. The angle formed by U1 and U2 is, for example, 94.95 °. In FIG. 5, the upward directions U1 and U2 of the display images 14 and 16 are virtually shown as arrows (vectors).

  And the indicator 10 is arrange | positioned so that the longitudinal direction of the display surface 12a may be provided in the vehicle front and the vehicle rear, and the inclination is provided above the vehicle. In addition, one end in the longitudinal direction including the first display area 12b is located on the vehicle rear side, and the other end including the second display area 12c is located on the vehicle front side.

  Thus, the 1st display image 14 displayed by the indicator 10 is projected toward the 1st optical system 30 as light, and the 2nd display image 16 is projected toward the 2nd optical system 40 as light. It is like that.

  The first optical system 30 projects the first virtual image 7 from the vehicle 2 by projecting the first display image 14 displayed in the first display area 12b onto the combiner 20, as shown in FIGS. It is an optical system for displaying in a visible manner. The first optical system 30 includes a single mirror 32 and a hood 34.

  The mirror 32 is formed by depositing aluminum as the reflecting surface 32a on the surface of a base material made of synthetic resin or glass. The reflection surface 32a is formed in a smooth flat shape. With this shape, the mirror 32 reflects the first display image 14 from the first display area 12b as light toward the reflecting surface 22a of the combiner 20.

  As shown in FIG. 6, the hood 34 is disposed between the first display area 12b and the mirror 32, and is formed of a synthetic resin or the like. The hood 34 fixes the mirror 32 to the display 10 and prevents the light from the first display area 12b from traveling in a direction other than the mirror 32, in other words, to avoid interference with the second optical system 40. Can be shaded and absorbed.

  As shown in FIGS. 2, 4, 7, and 8, the combiner 20 is disposed on the instrument panel 4 and restricts the transmission of a background that is visible from the vehicle 2. In particular, as shown in FIG. 7, the combiner 20 of the first embodiment includes a translucent part 22 having a reflective surface 22a that reflects light from the first optical system 30, and an opposite side of the reflective surface 22a in the translucent part 22. And a dark color portion that shields a background visible from the inside of the vehicle 2.

  Specifically, the translucent part 22 is a translucent member formed in a plate shape with translucent synthetic resin or glass or the like, and on the side facing the mirror 32 and the viewing area 5, the reflective surface 22a. Is formed. The reflection surface 22a is formed in a smooth curved surface as a concave surface in which the central portion of the light transmitting portion 22 is recessed. With this shape, the light transmitting part 22 reflects the light from the first optical system 30 toward the viewing area 5. The reflective surface 22a may be coated with a dielectric multilayer film or the like that adjusts the reflectance of light.

  The dark color portion 24 is a light-shielding member formed in a plate shape with dark synthetic resin or the like, and is integrated with the light transmitting portion 22 on the opposite side of the reflecting surface 22a so as to be in close contact with the entire surface of the light transmitting portion 22. Is formed. The dark color portion 24 is displayed in front of the combiner 20 as viewed from the vehicle occupant by blocking the background light incident on the combiner 20 from the front of the vehicle through the front windshield 3 from the outside of the vehicle toward the rear of the vehicle. The contrast of the first virtual image 7 is increased. In addition, the dark color portion 24 absorbs light that is transmitted through the reflection surface 22a without being reflected. In particular, the dark color portion of the first embodiment is formed in black of the same color as the instrument panel 4, for example.

  The instrument panel 4 of the vehicle 2 has a through hole 4 a for allowing light to pass between the mirror 32 or 42 in the instrument panel 4 and the combiner 20 on the instrument panel 4. And the combiner 20 has the rotation mechanism 26 electrically connected with the control circuit 50 on the base side, and can be rotated to the instrument panel 4 side. For example, when the engine switch 61 of the vehicle 2 is off, as shown in FIG. 8, when the combiner 20 blocks the through hole of the instrument panel 4 by such rotation, the dark color portion 24 functions as a cover. Further, when the engine switch 61 is turned on, the combiner 20 that has blocked the hole of the instrument panel 4 when the engine switch 61 is turned off is turned to the front windshield 3 side by the turning mechanism 26 and is raised.

  2 to 4 and 6, the second optical system 40 projects the second virtual image 8 on the vehicle 2 by projecting the second display image 16 displayed in the second display area 12 c onto the front windshield 3. It is an optical system for displaying in a visible manner from the inside. The second optical system 40 has a plurality of mirrors 42, 44, 46 and a hood 48.

  The mirror 42 is formed by evaporating aluminum as the reflecting surface 42a on the surface of a base material made of synthetic resin or glass. The reflection surface 42a is formed in a smooth flat shape. With this shape, the mirror 42 reflects the second display image 16 from the second display area 12 c as light toward the mirror 44. Here, the mirror 42 is arranged facing the left side of the vehicle, the lower side of the vehicle, and the rear side of the vehicle. The reflection direction of the mirror 42 is oblique to the left side of the vehicle in order to avoid blocking the light path from the mirror 32 of the first optical system 30 to the combiner 20.

  As shown in FIG. 6, the hood 48 is disposed between the second display area 12c and the mirror 42, and is formed of a synthetic resin or the like. The hood 48 fixes the mirror 42 to the display and prevents the light from the second display area 12c from traveling in a direction other than the mirror 42, in other words, to avoid interference with the first optical system 30. Shading and absorption are possible.

  The mirror 44 is formed by evaporating aluminum as the reflecting surface 44a on the surface of a base material made of synthetic resin or glass. The reflection surface 44a is formed in a smooth flat shape. With this shape, the mirror 44 reflects the light from the mirror 42 toward the mirror 46. Here, the mirror 44 is arranged on the right side of the vehicle, the lower side of the vehicle, and the front side of the vehicle. The reflection direction of the mirror 44 is an oblique direction on the right side of the vehicle.

  The mirror 46 is formed by evaporating aluminum as the reflecting surface 46a on the surface of a base material made of synthetic resin or glass. The reflection surface 46a is formed in a smooth curved surface as a concave surface in which the center portion of the mirror 46 is recessed. With this shape, the mirror 46 reflects the light from the mirror 44 toward a position above the combiner 20 in the front windshield 3 and adjusts the imaging state of the second virtual image 8. Here, the mirror 46 is arranged on the left side of the vehicle, the upper side of the vehicle, and the rear side of the vehicle. Further, the center of the mirror 46 is shifted to the right of the vehicle with respect to the center of the combiner 20.

Thus, the 1st optical system 30 and the 2nd optical system 40 are arrange | positioned in the instrument panel 4 so that mutual interference may be avoided. Then, depending on a plurality of mirrors 42, 44, 46, the left-right direction of the vehicle 2 (i.e., left of the vehicle and the vehicle right side), the second optical system 40 path of light to are formed, each mirror facing oblique direction The upward direction of the virtual image is rotated by reflection in the oblique direction at 42, 44 and 46. However, by controlling the upward direction U2 of the second display image 16 in an oblique direction with respect to the front of the vehicle, the amount of rotation due to reflection by each mirror 42, 44, 46 is canceled out, and the upward direction of the second virtual image 8 Prevents the vehicle from leaning to the left and right of the vehicle.

  In FIG. 2, the light path reflected from the display surface 12 a via the first optical system 30 to the combiner 20 and the light reflected from the display surface 12 a via the second optical system 40 to the front windshield 3. This path is indicated by a broken line. In FIG. 3, the light path from the display surface 12 a to the combiner 20 via the first optical system 30 is indicated by a broken line. Furthermore, in FIG. 4, the light path from the display surface 12a to the mirror 46 of the second optical system 40 is indicated by a broken line.

  Further, the distance from the visual recognition area 5 to the first virtual image 7 is different from the distance from the visual recognition area 5 to the second virtual image. For example, in the case of the vehicle occupant shown in FIG. 1, the distance L1 from the eye point 6 in the visual recognition area 5 to the first virtual image 7 is 170 cm, and the distance L2 to the second virtual image 8 is 230 cm. The distances to the virtual images 7 and 8 can be set by appropriately designing the optical path lengths of the optical systems 30 and 40 or the shapes of the reflecting surfaces 22a, 32a, 42a, 44a, and 46a.

  In the first embodiment, for example, as shown in FIG. 9, the first virtual image 7 is a character, and the vehicle speed as the vehicle state value is displayed in real time. Further, the second virtual image 8 is a figure, and an arrow of car navigation as vehicle information is displayed so as to overlap with a background visually recognized through the front windshield.

  Here, in the first embodiment, the luminance of the first virtual image 7 is higher than the luminance of the second virtual image 8.

  The control circuit 50 is an electronic circuit formed mainly of a microcomputer (not shown) as a control unit, for example. As shown in FIG. 10, the control circuit 50 is electrically connected to the display device 10, the rotation mechanism 26, and the like. The control circuit is electrically connected to various sensors 60 that detect and acquire vehicle state values or vehicle information, and to an engine switch 61. And a control circuit controls the display state in the indicator 10, the rotation mechanism 26, etc. based on the electrical signal input from the various sensors 60 and the engine switch 61. FIG.

  Hereinafter, a flowchart executed by the control circuit 50 according to the first embodiment by executing the computer program will be described in detail with reference to FIG.

  First, in step S10, it is determined whether or not the engine switch 61 of the vehicle 2 is turned on. Specifically, when the engine switch 61 is turned on, an electrical signal is input to the control circuit 50, and determination is made by obtaining this signal. If an affirmation judging is made at Step S10, it will move to Step S20.

  In step S20, the combiner 20 is rotated. Specifically, the combiner 20 that outputs an electrical signal to the rotation mechanism 26 and blocks the through hole 4a of the instrument panel 4 when the engine switch 61 is turned off is rotated by the rotation mechanism 26 toward the front windshield 3 side. Move and get up. After the process of step S20, the process proceeds to step S30.

  In step S30, at least one of the projection of the first display image 14 and the projection of the second display image 16 is selected. Here, both the projection of the first display image 14 and the projection of the second display image 16 are selected. After the process of step S30, the process proceeds to step S40.

  In step S40, projection of the display image selected in step S30 is started. With this projection, two types of virtual images, a first virtual image 7 and a second virtual image 8 as shown in FIG. After the process of step S40, the process proceeds to step S50.

  In step S50, it is determined whether or not the engine switch 61 is turned off. Specifically, when the engine switch 61 is turned off, an electric signal is input to the control circuit 50, and determination is performed by obtaining this signal. If an affirmation judging is made at Step S50, it will move to Step S60. If a negative determination is made in step S50, the determination in step S50 is performed again after a predetermined time.

  In step S60, the projection of the display image started in step S40 is stopped. Here, both the projection of the first display image 14 and the projection of the second display image 16 are stopped. By this stop, the first virtual image 7 and the second virtual image 8 become invisible. After the process of step S60, the process proceeds to step S70.

  In step S70, the combiner 20 is rotated. Specifically, an electrical signal is output to the turning mechanism 26, and the combiner 20 that has been turned up and turned to the front windshield 3 side by the turning mechanism 26 when the engine switch 61 is turned on is installed in the instrument by the turning mechanism 26. Rotate to the ment panel 4 side and close the through hole again. The series of operations of the control circuit is finished with step S70.

(Function and effect)
The operational effects of the first embodiment described above will be described.

  According to the first embodiment, the front windshield 3 on which the second virtual image 8 displayed so as to be visible from inside the vehicle 2 is projected, and the combiner on which the first virtual image 7 displayed so as to be visible from inside the vehicle 2 is projected. Two types of virtual images 7 and 8 can be displayed on at least one of 20. According to this, by controlling the display state utilizing the characteristics of the front windshield 3 and the combiner 20, it is possible to display a virtual image that is easy to visually recognize in various situations. Further, the first display image 14 in the first display area 12b and the second display image 16 in the second display area 12c are different in the upward direction. According to this, even if it is the display apparatus 100 for vehicles mounted in the instrument panel 4, it becomes possible to match | combine the upper direction of two types of virtual images 7 and 8 visually recognized by the vehicle passenger. From the above, it is possible to provide the vehicle display device 100 in which a virtual image can be easily viewed.

  In addition, according to the first embodiment, the first virtual image 7 can be displayed with high contrast because the transmission of the background visible from the vehicle 2 by the combiner 20 is restricted. On the other hand, the second virtual image 8 can be displayed so as to overlap the background. As described above, it is possible to display easily visible virtual images in various situations by utilizing the characteristics of the front windshield 3 and the combiner 20.

  Moreover, according to 1st Embodiment, the display images 14 and 16 are large in the display 10 with the rectangular display surface 12a which has the 1st display area 12b and the 2nd display area 12c divided | segmented to a longitudinal direction, A virtual image Can be provided.

  Further, according to the first embodiment, on the display surface 12a, the first display image 14 in which the upper direction U1 coincides with the longitudinal direction that is the pixel arrangement direction is projected onto the combiner 20 with high image quality. Therefore, since the contrast is high by restricting the transmission of the background, the vehicle occupant can visually recognize the high-quality first virtual image 7 in the combiner 20 where the quality of the image is conspicuous. On the other hand, on the display surface 12a, the second display image 16 in which the upward direction U2 is oblique with respect to the longitudinal direction is projected onto the front windshield 3. Accordingly, the vehicle occupant has a lower image quality than the first virtual image 7 in the front windshield 3 where the image quality is inconspicuous because the contrast is lowered by overlapping with the background. It becomes possible to visually recognize the second virtual image 8 combined with From the above, it is possible to provide the vehicle display device 100 in which a virtual image can be easily viewed.

  Further, according to the first embodiment, in the second optical system 40 in which the light path is formed in the left-right direction of the vehicle 2 by the plurality of mirrors 42, 44, 46, the degree of freedom of mirror arrangement is improved, which is easy. In addition, interference with the first optical system 30 can be avoided. From the above, it is possible to provide the vehicle display device 100 in which a virtual image can be easily viewed.

  Further, in the modification of the vehicle display device described in the prior document 1, since it is a simple mirror that does not transmit on both sides, the vehicle occupant looks through the mirror when the first virtual image is not displayed. Can be done. However, the combiner 20 of 1st Embodiment is formed in the translucent part 22 which forms the reflective surface 22a which reflects the light from the 1st optical system 30, and the other side of the reflective surface 22a in the translucent part 22, and background The dark color part 24 which shields light. According to this, of the light incident on the combiner 20, the light that does not reflect the reflecting surface 22 a is transmitted through the light transmitting part 22 and further absorbed by the dark color part 24. For this reason, it is suppressed that the indicator 10 and its peripheral member which are not light-emitting are visually recognized.

  Further, according to the first embodiment, when the combiner 20 is turned to the instrument panel 4 side having the through hole 4a when the engine switch 61 is turned off, the dark color portion 24 functions as a cover when the through hole 4a is closed. To do. According to this, it is possible to prevent the vehicle occupant from visually recognizing the inside of the vehicle display device 100 and to suppress the entry of external light when not in use. Moreover, since the dark color part 24 is integrated with the instrument panel 4 when not in use, the appearance is improved.

  Moreover, according to 1st Embodiment, since it is the 2nd display image 16 projected on the upper location rather than the combiner 20 in the instrument panel 4 and the combiner 20 in the front windshield 3, it is line-of-sight movement Easy to do.

  In addition, according to the first embodiment, a character that is difficult to see unless the vehicle occupant gazes is the first virtual image 7 of the combiner 20 that restricts the transmission of the background, and a figure such as an arrow that is easy to understand by overlapping the background. Is the second virtual image 8 of the front windshield 3. Therefore, it is possible to provide the vehicular display device 100 in which a virtual image can be easily viewed.

  Moreover, according to 1st Embodiment, since the distance from the visual recognition area 5 to the 1st virtual image 7 differs from the distance from the visual recognition area 5 to the 2nd virtual image 8, two types of virtual images 7 and 8 move back and forth. A stereoscopic effect can be produced.

(Second Embodiment)
As shown in FIG. 12, the second embodiment of the present invention is a modification of the first embodiment. The second embodiment will be described with a focus on differences from the first embodiment.

  By projecting the first display image 214 and the second display image 216, two types of virtual images, a first virtual image 207 and a second virtual image 208, are displayed so as to be visible from inside the vehicle 2. In the second embodiment, for example, as shown in FIG. 12, the first virtual image 207 and the second virtual image 208 are characters, and the vehicle speed as the vehicle state value is displayed in real time. The font size of the second virtual image 208 is larger than the font size of the first virtual image 207.

  In FIG. 12, the corresponding ones are schematically indicated by broken-line arrows in order to show the correspondence between the display images 214 and 216 and the virtual images 207 and 208, but the broken lines do not indicate the light path.

  According to the second embodiment, since the second virtual image 208 has a larger font size than the first virtual image 207, the second virtual image 208 having a small contrast due to the transmission of the background is easily visible.

(Third embodiment)
As shown in FIGS. 13-14, 3rd Embodiment of this invention is a modification of 1st Embodiment. The third embodiment will be described with a focus on differences from the first embodiment.

  In the third embodiment, as shown in FIG. 13, a part 362a of the common index 362 is displayed as the first display image 314 in the first display area 12b, and the remaining part 362b of the common index 362 is displayed as the second display image 316. It is displayed in the second display area 12c. As a result, the common index 362 is displayed as a joint of the first virtual image 307 and the second virtual image 308. In the example of FIG. 14, a graphic for guiding a lane is displayed as the common index 362.

  In the third embodiment, the brightness of the second virtual image 308 is higher than the brightness of the first virtual image 307.

  According to the third embodiment, the first display image 314 displays the part 362a of the common index 362, the second display image 316 displays the remaining part 362b of the common index 362, and the first virtual image 307. The common indicator 362 is displayed jointly with the second virtual image 308. According to this, even if the display surface 12a is partitioned, the common index 362 can be displayed largely. Thus, the vehicle occupant's attention can be drawn.

  Further, according to the third embodiment, even if the second virtual image 308 overlaps the background due to the brightness of the second virtual image 308 that is larger than the brightness of the first virtual image 307 of the combiner 20 that restricts the transmission of the background, the first Both the virtual image 307 and the second virtual image 308 can be viewed with high contrast.

(Fourth embodiment)
As shown in FIGS. 15-16, 4th Embodiment of this invention is a modification of 1st Embodiment. The fourth embodiment will be described with a focus on differences from the first embodiment.

  A flowchart according to the fourth embodiment will be described in detail with reference to FIG.

  Steps S410 to S430 perform the same control as steps S10 to S30 of the first embodiment. After the process of step S430, the process proceeds to step S440.

  In step S440, it is determined whether the inter-vehicle distance is greater than or equal to a predetermined value. Specifically, it is determined whether or not the inter-vehicle distance as the vehicle information input from the various sensors 60 as an electrical signal is a predetermined value or more. The predetermined value of the inter-vehicle distance is set from the viewpoint of preventing rear-end collision, for example. If an affirmation judging is made at Step S440, it will move to Step S450. On the other hand, if a negative determination is made in step S440, the process proceeds to step S451.

  In step S450, projection of the selected display images 414 and 416 is started or continued. Here, both the projection of the first display image 414 and the projection of the second display image 416 are started. Then, two types of virtual images of the first virtual image 7 and the second virtual image 8 similar to those in the first embodiment as shown in FIG. 9 are displayed so as to be visible from the vehicle. After the process of step S450, the process proceeds to step S460.

  In step S451, projection of the selected display images 414 and 416 is started or continued. Here, both the projection of the first display image 414 and the projection of the second display image 416 are started. Specifically, a part 462a of the common index 462 is displayed on the display as the first display image 414, and the remaining part 462b of the common index 462 is displayed on the display as the second display image 416. As a result, the common index 462 is displayed as a joint of the first virtual image 407 and the second virtual image 408. Furthermore, a part 462a of the common index 462 displayed as the first display image 414 is increased or decreased with time. In other words, the remaining portion 462b of the common index 462 displayed as the second display image 416 decreases when the portion 462a in the first display image 414 increases, and the portion 462a in the first display image 414 decreases. When you do, it will increase accordingly. As a result, the vehicle occupant visually recognizes that the common index 462 moves between the first virtual image 407 and the second virtual image 408 with time. For example, as shown in FIG. 16, the common index 462 that prompts the vehicle 2 to stop is displayed while moving between the first virtual image 407 and the second virtual image 408 with time. After the process of step S451, the process proceeds to step S460.

  In step S460, it is determined whether the engine switch 61 is turned off while continuing to update the display switched in step S450 or S451. If an affirmation judging is made in Step S460, it will move to Step S470. On the other hand, if a negative determination is made in step S460, the determination in step S440 is performed again after a predetermined time while continuing to update the display switched in step S450 or S451.

  Steps S470 to S480 perform the same control as steps S60 to S70 of the first embodiment.

  According to the fourth embodiment, a part 462a of the common index 462 displayed as the first display image 414 is increased or decreased with time. The remaining portion 462b of the common indicator 462 displayed as the second display image 416 decreases when the portion 462a in the first display image 414 increases, and decreases when the portion 462a in the first display image 414 decreases. Increase by that amount. According to this, since the vehicle occupant visually recognizes that the common index 462 moves between the first virtual image 407 and the second virtual image 408 with time, the vehicle occupant can draw attention.

(Fifth embodiment)
As shown in FIGS. 17-18, 5th Embodiment of this invention is a modification of 1st Embodiment. The fifth embodiment will be described with a focus on differences from the first embodiment.

  A flowchart according to the fifth embodiment will be described in detail with reference to FIG.

  Steps S510 to S520 perform the same control as steps S510 to S520 of the first embodiment. After the process of step S520, the process proceeds to step S530.

  In step S530, it is determined whether the brightness outside the vehicle 2 is greater than or equal to a predetermined value. Specifically, the brightness of the background that can be visually recognized by the various sensors 60 is detected, and an illuminance electrical signal as vehicle information is input to determine whether the illuminance is equal to or greater than a predetermined value. If an affirmation judging is made at Step S530, it will move to Step S540. On the other hand, if a negative determination is made in step S530, the process proceeds to step S541.

  In step S540, the projection of the first display image 514 is selected. In other words, the projection of the second display image 516 is not selected. Then, the projection of the first display image 514 is started, continued, or switched. With this projection, the first virtual image 507 is displayed so as to be visible from within the vehicle 2. For example, as shown to Fig.18 (a), the 1st virtual image 507 is a character, and the vehicle speed as a vehicle state value is displayed in real time. After the process of step S540, the process proceeds to step S550.

  In step S541, the projection of the second display image 516 is selected. In other words, the projection of the first display image 514 is not selected. Then, the projection of the second display image 516 is started, continued, or switched. By this projection, the second virtual image 508 is displayed so as to be visible from the inside of the vehicle 2. For example, as shown in FIG. 18B, the second virtual image 508 is a character, and the vehicle speed as the vehicle state value is displayed in real time. After the process of step S540, the process proceeds to step S550.

  In step S550, it is determined whether the engine switch 61 is turned off while continuing the projection selected in step S540 or S541. If a positive determination is made in step S550, the process proceeds to step S560. On the other hand, if a negative determination is made in step S550, the determination in step S530 is performed again after a predetermined time while continuing the projection selected in step S540 or S541.

  Steps S560 to S570 perform the same control as steps S60 to S70 of the first embodiment.

    In FIGS. 18A and 18B, the corresponding ones are schematically indicated by broken-line arrows in order to show the correspondence between the display images 514 and 516 and the virtual images 507 and 508. It does not indicate a route.

  According to the fifth embodiment, the front windshield 3 is selected by selecting one of the projection of the first display image 514 and the projection of the second display image 516 based on the detection result of the background brightness. By utilizing the features of the combiner 20, it is possible to display a virtual image that is easy to view in various situations. For example, the virtual images 507 and 508 can be easily visually recognized with appropriate contrast.

(Other embodiments)
Although a plurality of embodiments of the present invention have been described above, the present invention is not construed as being limited to these embodiments, and various embodiments and combinations can be made without departing from the scope of the present invention. Can be applied.

  Specifically, as a first modification regarding the first to fifth embodiments, the display surface 12a may have the longitudinal direction aligned with the left side and the right side of the vehicle, and the first display area 12b and the second display area 12c. The dividing direction is not limited to the longitudinal direction.

  Moreover, as the modification 2 regarding 1st-5th embodiment, if it can control so that the upper direction U1 and the upper direction U2 may differ, both the upper direction U1 and the upper direction U2 of the display surface 12a. It may be controlled in an oblique direction with respect to the longitudinal direction. Alternatively, the upward direction U1 may coincide with the short direction of the display surface 12a, and the upward direction U2 may be controlled in an oblique direction with respect to the short direction of the display surface 12a.

  Further, as a third modification example related to the first to fifth embodiments, for example, instead of the second optical system 40, the first optical system 30 is composed of a plurality of mirrors, and the plurality of mirrors moves in the left-right direction of the vehicle. A light path may be formed. In addition, the first optical system 30 and the second optical system 40 may include additional mirrors, lenses, prisms, and the like.

  Moreover, as the modification 4 regarding 1st-5th embodiment, the combiner 20 should just restrict | limit the permeation | transmission of a background. In other words, the light-transmitting portion 22 that forms a reflecting surface that reflects light from the first optical system 30 and the dark-colored portion 24 that is formed on the opposite side of the reflecting surface 22a in the light-transmitting portion 22 and shields the background. Not necessarily. As an example of this, for example, the transmission of the background can be restricted by a semi-transparent combiner colored in gray.

  Moreover, as the modification 5 regarding 1st-5th embodiment, the instrument panel 4 does not need to have the through-hole 4a. Further, the combiner 20 may not have the rotation mechanism 26.

  Further, as a sixth modified example related to the first to fifth embodiments, the second optical system 40 projects the second display image 16 to a location other than the location above the combiner 20 in the front windshield 3. Good.

  Moreover, as the modification 7 regarding 1st-5th embodiment, it is possible to combine the display target in each embodiment based on operation of a vehicle occupant and various sensors 60. Further, the display as characters is not limited to the vehicle speed, but may be a vehicle state value such as an odd value or a remaining fuel amount.

  Moreover, as the modification 8 regarding 1st-5th embodiment, the distance from the visual recognition area 5 to the 1st virtual image 7 and the distance from the visual recognition area 5 to the 2nd virtual image 8 may be the same. According to this, when the line of sight is moved between the first virtual image 7 and the second virtual image 8, it is not necessary to adjust the focus of the eye each time. Alternatively, in the first embodiment, the distance from the visual recognition region 5 to the first virtual image 7 is smaller than the distance from the visual recognition virtual image to the second virtual image 8, but may be larger.

  Moreover, as the modification 9 regarding 1st-5th embodiment, the backlight of the display surface 12a may be divided | segmented into the 1st display area 12b and the 2nd display area 12c, and you may make it project independently.

  As a tenth modification related to the fifth embodiment, when the brightness outside the vehicle 2 is a predetermined value or less, both the projection of the first display image 514 and the projection of the second display image 516 are selected. You may control.

  100 vehicle display device, 2 vehicle, 3 front windshield, 4 instrument panel, 4a through hole, 5 viewing area, 7, 207, 307, 407, 507 first virtual image, 8, 208, 308, 408, 508 first 2 virtual images, 10 display, 12a display surface, 12b first display area, 12c second display area, 14, 214, 314, 414, 514 first display image, 16, 216, 316, 416, 516 second display image , 20 Combiner, 22 Translucent part, 22a Reflecting surface, 24 Dark part, 26 Rotating mechanism, 30 First optical system, 40 Second optical system, 42, 44, 46 Mirror, 50 Control circuit, 60 Various sensors, 61 Engine switch, 362, 462 Common indicator, 362a, 362b part, 362b, 462b rest, U1, U2 Above image Direction, L1, L2 distance

Claims (14)

In a vehicle (2) having a front windshield (3) and an instrument panel (4), the vehicle display device mounted on the instrument panel,
A display (10) having a display surface (12a) partitioned into a first display area (12b) and a second display area (12c);
A combiner (20) disposed in the vehicle;
By projecting the first display image (14, 214, 314, 414, 514) displayed in the first display area onto the combiner, the first virtual image (7, 207, 307, 407, 507) is projected onto the vehicle. A first optical system (30) that is visible from the inside,
A second virtual image (8, 208, 308, 408, 508) is projected onto the front windshield by projecting the second display image (16, 216, 316, 416, 516) displayed in the second display area. A second optical system (40) for displaying in a visible manner from within the vehicle;
On the same display surface of the display, the second display image and the second display image and the second display image are different from each other so that an upward direction (U2) of the second display image is different from an upward direction (U1) of the first display image . Control means for displaying one display image ;
Equipped with a,
The combiner is disposed on the instrument panel;
It said second optical system, the second display image, the display device for a vehicle characterized that you projected upward position than the combiner in the front windshield.   The vehicle display device according to claim 1, wherein the combiner regulates transmission of a background that is visible from the inside of the vehicle. The display surface is rectangular;
The control means matches the upward direction of the first display image with the longitudinal direction or the short direction of the display surface, and the upward direction of the second display image is oblique with respect to the longitudinal direction of the display surface. The vehicle display device according to claim 2, wherein the vehicle display device can be controlled as follows.   The combiner is formed on the opposite side of the reflection surface in the light transmission portion to form a reflection surface (22a) for reflecting light from the first optical system, and shields the background. The vehicle display device according to claim 2, further comprising a dark color portion (24). The instrument panel has a through hole (4a),
The vehicular display device according to claim 4, wherein the combiner closes the through hole by rotating toward the instrument panel when the engine switch (61) of the vehicle is turned off.   The vehicular display device according to any one of claims 2 to 5, wherein the brightness of the second virtual image (308) is higher than the brightness of the first virtual image (307). The first virtual image (7) is a character,
The vehicular display device according to any one of claims 2 to 6, wherein the second virtual image (8) is a figure. The first virtual image (207) and the second virtual image (208) are characters,
The vehicle display device according to any one of claims 2 to 6, wherein a font size of the second virtual image is larger than a font size of the first virtual image.   The control means displays a part (362a, 462a) of the common index (362, 462) in the first display area as the first display image (314, 414), and the second display image (316, 416). 7. The vehicle display device according to claim 1, wherein a remaining part (362 b, 462 b) of the common indicator is displayed in the second display area.   The vehicle display device according to claim 9, wherein the part (462a) of the common index (462) is increased or decreased with time. The display surface is rectangular;
The vehicle display device according to claim 1, wherein the first display area and the second display area are divided in a longitudinal direction. The second optical system includes a plurality of mirrors (42, 44, 46),
The vehicle display device according to claim 1, wherein a path of light is formed in the left-right direction of the vehicle by the plurality of mirrors. A detection means (60) for detecting the brightness of the background visible from within the vehicle;
The control means selects at least one of the projection of the first display image (514) and the projection of the second display image (516) based on the result of the detection means. vehicle display device according to any one of 1 2 from. In the vehicle, a distance (L1) from the visual recognition area (5), which is an area where each virtual image can be visually recognized, to the first virtual image, and a distance (L2) from the visual recognition area to the second virtual image. vehicle display device according to any one of claims 1 to 3, wherein different.

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