JP2014021392A - Display control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a user interface of a display control device that displays information to a user in an appropriate vertical direction.SOLUTION: A display control device 1000 comprises: an image processing unit 1140 that generates image signals of a display image; and an image display unit 1200 that acquires the image signals of the display image generated by the image processing unit 1140, and projects image display light of the display image on an optical unit having a first attachment surface and a second attachment surface opposing to the first attachment surface, any one of which can be attached to an attachment member. The image processing unit 1140 generates a vertical setting image that includes a first image indicating a first option, and a second image inverted from the first image in a vertical direction and indicating a second option. The image display unit 1200, when the first attachment surface of the optical unit is attached to the attachment member, projects image display light of the vertical setting image, and when the second attachment surface of the optical unit is attached to the attachment member, projects image display light of an image inverted from the vertical setting image in a vertical direction.

Description

  The present invention relates to a display control apparatus.

  A vehicle display device called a head-up display is known. The head-up display transmits information that enters from outside the vehicle and displays information by superimposing it on the scenery outside the vehicle using an optical element called a combiner that reflects the image projected from the optical unit arranged inside the vehicle. It is a display device. A head-up display has recently been attracting attention as a display device for vehicles because a driver who is viewing the scenery outside the vehicle can recognize information on the image projected from the optical unit with almost no change in line of sight or focus. Collecting.

  Japanese Patent Application Laid-Open No. 2004-228561 discloses that a visible space is adjusted by using an X-axis stage, a Z-axis stage, and a rotary stage in a head-up display mounted on a dashboard of a vehicle.

Japanese Patent Laid-Open No. 10-278629

  Since the head-up display displays information superimposed on the scenery outside the vehicle, it is desirable to display information to the user in an appropriate vertical direction.

  The present invention has been made in view of such a situation, and an object thereof is to provide a user interface of a display control apparatus that displays information to a user in a suitable vertical direction.

  In order to solve the above problems, a display control device according to an aspect of the present invention acquires an image processing unit that generates an image signal of a display image, an image signal of the display image generated by the image processing unit, and a first attachment And an image display unit that projects image display light of a display image onto an optical unit that can be attached to either the attachment member or the second attachment surface opposite to the first attachment surface. The image processing unit generates a top and bottom setting image including a first image indicating the first option and a second image indicating the second option in which the first image and the top and bottom are reversed. Whether the first mounting surface of the unit is attached to the mounting member or the second mounting surface of the optical unit is attached to the mounting member, the first image or the second image constituting the top-and-bottom setting image. One of the images is upright To project the image display light.

  ADVANTAGE OF THE INVENTION According to this invention, the user interface of the display control apparatus which displays information to a user with a suitable top-and-bottom direction can be provided.

It is a figure which shows the structure of the head-up display which is an image display apparatus which concerns on this invention. It is a perspective view shown by the visual field from the windshield side about the head-up display of FIG. It is a figure which shows the internal structure of an optical unit with the path | route of light. It is a figure which shows the internal structure of an optical unit with the path | route of light. It is a figure shown about a part inside optical unit and a part inside board | substrate storage part. In FIG. 5, it is a figure shown about the mode at the time of removing a heat sink and a flexible cable. It is a side view of the head up display attached to the room mirror. It is a front view of the head up display attached to the room mirror. It is a figure shown about the visual recognition area of the image (virtual image) projected on a combiner. It is a figure shown about the visual recognition area of the image (virtual image) projected on a combiner. It is a figure which shows a mode when a projection part and a combiner are removed in the head-up display attached for right-hand drive vehicles. It is a figure which shows a mode when the board | substrate storage part is changed for left-hand drive vehicles. It is a figure which shows the head-up display changed for left-hand drive vehicles. It is a figure which shows the relationship between the display image modulated by an image display element, and the projection image shown to a combiner, when attaching for right-hand drive vehicles. It is a figure which shows the relationship between the display image modulated with an image display element, and the projection image shown to a combiner, when attaching for left-hand drive vehicles. It is a block diagram which shows the function structure of a display control apparatus. It is a figure which shows the remote control used as an operating device. It is a block diagram which shows the function structure of an image process part. It is a figure which shows the top and bottom setting image which an operation image generation part produces | generates. It is a figure which shows the top and bottom setting image of the state which can select a 1st choice. It is a figure which shows the top and bottom setting image of the state which can select a 2nd choice. It is a figure which shows the operation image which an operation image generation part produces | generates. It is a figure which shows the operation image after receiving the downward input operation during the production | generation of the operation image of FIG. It is a figure which shows the operation image after receiving the input operation of determination during the production | generation of the operation image of FIG. FIG. 25 is a diagram showing an operation image after receiving an upward input operation during generation of the operation image of FIG. 24. It is a figure which shows the acquisition image which an image acquisition part acquires from an external device. It is a figure which shows the synthesized image on which the operation image and the acquired image were superimposed. It is a flowchart which shows the flow of a process of a display control apparatus. It is a figure which shows the projection image after selecting a 1st option in the case of attaching for right-hand drive vehicles. It is a figure which shows the projection image after selecting a 2nd option, when attaching for right-hand drive vehicles. It is a figure which shows the projection image which presents the state which can select a 1st choice, when attaching for left-hand drive vehicles. It is a figure which shows the projection image which presents the state which can select a 2nd choice, when attaching for left-hand drive vehicles.

  Embodiments of the present invention will be described below with reference to the drawings. Specific numerical values and the like shown in the embodiment are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

[External Configuration of Display Device for Vehicle According to this Embodiment]
As a display device for a vehicle according to this embodiment, a head-up display that is used by being attached to a room mirror (rear mirror) provided in the vehicle is taken as an example, and an external configuration thereof is described with reference to FIGS. 1 and 2. To do. FIG. 1 shows an aspect in which a head-up display 10 according to the present embodiment is installed so as to be observed from a room mirror 600 to which the head-up display 10 is attached in a field of view toward a windshield (not shown) of the vehicle (front of the vehicle). FIG. FIG. 2 is a perspective view showing an aspect in which the head-up display 10 is observed with a field of view from the windshield (not shown) toward the room mirror 600. In the following description, the front, rear, left, right, top, and bottom directions are the front and rear of the vehicle, the left side direction of the vehicle, the right side direction, and the vehicle from the plane perpendicular to the road surface on which the vehicle is disposed. Means the side direction and the opposite direction.

  The head-up display 10 receives an image signal from the outside, generates an image signal related to an image displayed as a virtual image on the combiner 400, and an image generated in the image generation substrate storage unit 150. An image display substrate storage unit 100 in which an image display substrate that receives a signal via a cable 190 and outputs the received image signal to the optical unit 200 is stored. The head-up display 10 is attached to the room mirror 600 by holding the image display substrate storage unit 100 on the room mirror 600 via an attachment member (not shown).

  The head-up display 10 includes an optical unit 200 to which an image signal output from the image display substrate 111 is input. The optical unit 200 includes an optical unit main body 210 and a projection unit 300. The optical unit main body 210 accommodates a light source 231, an image display element 240, and various optical lenses described later. The projection unit 300 houses various projection mirrors and an intermediate image screen 360 described later. The image signal output from the image display substrate 111 is projected as image display light from the projection port 301 to the combiner 400 having a concave shape through the devices of the optical unit main body 210 and the devices of the projection unit 300. . In the present embodiment, a case where a liquid crystal on silicon (LCOS) that is a reflective liquid crystal display panel is used as the image display element 240 is illustrated, but a DMD (Digital Micro-mirror Device) may be used as the image display element 240. Good. In that case, the optical system and the driving circuit according to the display element to be applied are used. Further, a laser display device using MEMS (Micro Electro Mechanical Systems) or the like may be used.

  A user who is a driver recognizes the projected image display light as a virtual image via the combiner 400. In FIG. 1, the projection unit 300 projects the image display light of the character “A” onto the combiner 400. By viewing the combiner 400, the user recognizes as if the letter “A” is displayed, for example, 1.7m to 2.0m ahead (front of the vehicle) from the user, that is, recognizes the virtual image 450. it can. Here, the central axis of the image display light projected from the projection unit 300 onto the combiner 400 is defined as a projection axis 320.

  Although details will be described later, the optical unit 200 is configured to be rotatable with respect to the image display substrate storage unit 100. Furthermore, in the head-up display 10 according to the present embodiment, the projection unit 300 and the combiner 400 have a configuration in which the mounting direction can be changed with respect to a predetermined surface of the optical unit main body 210 and can be detached.

[Internal Configuration of Display Device for Vehicle According to Present Embodiment: Optical System]
Next, the internal configuration of the head-up display 10 will be described. 3 and 4 are diagrams for describing the internal configuration of the optical unit 200 of the head-up display 10 described above. FIG. 3 is a diagram showing an internal configuration of the optical unit main body 210 and a part of the internal configuration of the projection unit 300 together with an optical path related to image display light. FIG. 4 is a diagram illustrating an internal configuration of the projection unit 300 and a part of the internal configuration of the optical unit main body 210 together with an optical path related to image display light projected to the combiner 400.

  First, an internal configuration of the optical unit main body 210 and an optical path related to image display light will be described with reference to FIG. The optical unit main body 210 includes a light source 231, a collimating lens 232, a UV-IR (Ultra Violet-Infrared Ray) cut filter 233, a polarizer 234, a fly-eye lens 235, a reflecting mirror 236, a field lens 237, and a wire grid deflection beam splitter 238. , A quarter-wave plate 239, an analyzer 241, a projection lens group 242, and a heat sink 243.

  The light source 231 includes a light emitting diode that emits light of three colors of white, blue, green, and red. The light source 231 is attached with a heat sink 243 for radiating heat generated with light emission. The light emitted from the light source 231 is converted into parallel light by the collimating lens 232. The UV-IR cut filter 233 absorbs and removes ultraviolet light and infrared light from the parallel light that has passed through the collimating lens 232. The polarizer 234 changes the light that has passed through the UV-IR cut filter 233 into unpolarized P-polarized light. The fly-eye lens 235 uniformly adjusts the brightness of the light that has passed through the polarizer 234.

  The reflecting mirror 236 changes the optical path of light that has passed through each cell of the fly-eye lens 235 by 90 degrees. The light reflected by the reflecting mirror 236 is collected by the field lens 237. The light collected by the field lens 237 is irradiated to the image display element 240 via the wire grid deflecting beam splitter 238 and the quarter wavelength plate 239 that transmit the P-polarized light.

  The image display element 240 includes red, green, and blue color filters for each pixel. The light applied to the image display element 240 has a color corresponding to each pixel, is modulated by the liquid crystal composition included in the image display element 240, and becomes S-polarized image display light, which is applied to the wire grid deflection beam splitter 238. It is emitted toward. The emitted S-polarized light is reflected by the wire grid deflection beam splitter 238, changes its optical path, passes through the analyzer 241, and then enters the projection lens group 242.

  The image display light transmitted through the projection lens group 242 exits the optical unit main body 210 and enters the projection unit 300. And the 1st projection mirror 351 with which the projection part 300 is provided changes the optical path of the image display light which entered.

  Next, an internal configuration of the projection unit 300 and an optical path related to image display light will be described with reference to FIG. The projection unit 300 includes a first projection mirror 351, a second projection mirror 352, and an intermediate image screen 360.

  As described above, the optical path of the image display light that has passed through the wire grid deflection beam splitter 238, the analyzer 241, and the projection lens group 242 included in the optical unit main body 210 is combined by the first projection mirror 351 and the second projection mirror 352. The optical path to 400 is changed. Meanwhile, a real image based on the image display light reflected by the second projection mirror 352 is formed on the intermediate image screen 360. The image display light related to the real image formed on the intermediate image screen 360 passes through the intermediate image screen 360 and is projected onto the combiner 400. As described above, the user recognizes the virtual image related to the projected image display light forward via the combiner 400.

  With the internal configuration as described above, the user can visually recognize the virtual image based on the image signal output from the image display substrate 111 by superimposing it on the actual landscape via the combiner 400.

[Internal Configuration of Display Device for Vehicle According to Present Embodiment: Details of Internal Configuration of Optical Unit 200]
The optical unit 200 is configured to be rotatable with respect to the image display substrate storage unit 100. Next, the internal configuration of the optical unit 200 and the image display substrate storage unit 100 will be described in detail with reference to FIG.

  FIG. 5 is a diagram illustrating a part of the inside of the optical unit 200 and a part of the inside of the image display substrate storage unit 100. In FIG. 5, the vicinity of the connection portion between the optical unit 200 and the image display substrate storage unit 100 is mainly shown. The optical system arrangement unit 245 included in the optical unit 200 accommodates various devices other than the heat sink 243 described above. In the optical unit 200, a heat sink 243 and a space 248 are provided in the vicinity of a connection point between the optical system arrangement unit 245 and the image display substrate storage unit 100 on the image display substrate storage unit 100 side.

  The image display substrate 111 electrically controls the image display element 240 and the light source 231 housed in the optical system arrangement unit 245. The image display substrate 111 and the image display element 240 accommodated in the optical system arrangement unit 245 are connected by a flexible cable 246 that is a wiring. Here, the flexible cable 246 is an example, and a flexible substrate or other wiring for transmitting an electrical signal can be used. The optical unit 200 has an optical unit side opening 247 formed on one surface of the housing, and the image display substrate storage portion 100 has a substrate storage portion side opening 112 formed on one surface of the housing. The flexible cable 246 connects the image display substrate 111 and the image display element 240 through the optical unit side opening 247 and the substrate storage unit side opening 112. The flexible cable 246 preferably has a length that allows the image display substrate storage unit 100 and the optical unit 200 to freely rotate.

  FIG. 6 is a diagram illustrating a state in which the heat sink 243 and the flexible cable 246 described above are removed from a part of the optical unit 200 in FIG. 5 and a part of the image display substrate storage unit 100.

  Each of the optical unit side opening 247 and the substrate storage unit side opening 112 is formed in a shape having two opposing sides that spread at a predetermined angle, for example, a substantially fan shape having a predetermined angle. As a result, when the optical unit 200 is rotated with respect to the image display substrate storage unit 100 as will be described later, the casing or the image display substrate related to the surface on which the optical unit side opening 247 of the optical unit 200 is provided. It is possible to reduce the force applied to the flexible cable 246 by the housing according to the surface on which the board storage unit side opening 112 of the storage unit 100 is provided. Therefore, it is possible to prevent the flexible cable 246 from being damaged or cut by the respective housings as it rotates.

  Further, as described above, the space portion 248 is provided in the vicinity of the connection portion of the image display substrate storage portion 100 in the optical unit 200, and the flexible cable 246 is mainly stored in the space portion 248 in the optical unit 200. Is done. By providing the space 248, the length of the flexible cable can be secured with a margin. Therefore, the tension applied to the flexible cable 246 can be reduced when the optical unit 200 is rotated with respect to the image display substrate storage unit 100. Therefore, it is possible to prevent the flexible cable 246 from being damaged or cut by the tension accompanying the rotation.

  The optical unit 200 and the image display substrate storage unit 100 are connected to each other by a hinge 113 that is a rotation member that serves as a rotation axis of the rotation and a rotation stop mechanism 114 that limits a rotation angle range. Yes. The optical unit 200 rotates with respect to the image display substrate storage unit 100 by a predetermined angle around the hinge 113. Here, although the hinge 113 is used in the present embodiment, other rotating members can be used.

  The substrate storage portion side opening 112 of the image display substrate storage portion 100 and the optical unit side opening 247 of the optical unit 200 are substantially fan-shaped as described above. When the image display substrate storage unit 100 rotates with respect to the optical unit 200, the opening for passing the flexible cable 246 formed by both the substrate storage unit side opening 112 and the optical unit side opening 247 is narrowed. However, since the substrate housing side opening 112 and the optical unit side opening 247 are substantially fan-shaped, the flexible cable 246 can be passed through the rotation stopping mechanism 114 within a limited angle range. Sufficient opening is maintained.

  Note that the shapes of the above-described substrate storage unit side opening 112 and optical unit side opening 247 are merely examples, and any shape may be used as long as the flexible cable 246 is not damaged by rotation. For example, only one of the substrate housing side opening 112 and the optical unit side opening 247 may be formed in a shape having two opposing sides that spread at a predetermined angle so that the load is not applied to the flexible cable 246.

  As described above, the head-up display 10 is configured such that the optical unit 200 and the image display substrate storage unit 100 can rotate about the hinge 113. The combiner 400 is provided in the optical unit 200, and the image display substrate storage unit 100 is attached to the room mirror 600 by an attachment member 500. As described above, the user can independently adjust the observation angle of the room mirror and the adjustment of the observation angle of the combiner 400. Therefore, the user can adjust the room mirror 600 to an angle at which the rear of the vehicle can be properly confirmed, and adjust the viewing angle of the combiner 400 to recognize an appropriate image (virtual image) without distortion.

  Further, since the space unit 248 for storing the flexible cable 246 having a sufficient length is provided in the optical unit 200, the optical unit 200 can freely rotate with respect to the image display substrate storage unit 100. Can appropriately adjust each of the above observation angles, and can prevent the tension generated by the rotation from damaging or cutting the flexible cable 246.

  Furthermore, the optical unit 200 is rotated by rotating the optical unit 200 with respect to the image display substrate storage unit 100 by forming the substrate storage unit side opening 112 and the optical unit side opening 247 of the optical unit 200 into the above-described substantially fan shape. In addition, it is possible to prevent each casing outer wall of the image display substrate storage unit 100 from being damaged or cut the flexible cable 246, and the user can appropriately adjust each observation angle.

  Further, as shown in FIG. 3, in this embodiment, the optical path of the image display light is bent twice in the 90 degree direction by using the reflecting mirror 236 and the wire grid deflection beam splitter 238. Then, the image display light is emitted to the projection unit 300 in a direction opposite to the light emission direction of the light source 231. Thus, by making the path of the image display light U-shaped, the flexible cable 246 can be wired so as not to be close to the light source 231 (see FIG. 5). Thereby, noise due to electromagnetic waves generated from the light source 231 can be prevented from being mixed into the image signal, and the flexible cable 246 can also be prevented from being damaged by heat generated by the light source 231. Furthermore, since the heat sink 243 installed in the vicinity of the light source 231 is also arranged away from the flexible cable 246, a space portion 248 for storing the flexible cable 246 can be provided.

[Angle adjustment using hinges]
Next, the rotation of the optical unit 200 with respect to the image display substrate storage unit 100 will be described in detail. FIG. 7 is a side view of the head-up display 10 attached to the room mirror 600. As shown in this figure, the room mirror 600 is normally directed toward the driver so that the driver can visually recognize the rear of the vehicle. That is, it is rare for the driver to drive with the mirror surface 602 of the room mirror 600 perpendicular to the vehicle bottom surface or the traveling road surface. Usually, the driver uses the mirror surface 602 of the room mirror 600 as the vehicle bottom surface or the like. The direction of the rearview mirror 600 is tilted so as to have an angle with respect to the vertical plane. For this reason, when the head-up display 10 is attached to the rearview mirror 600, the image display substrate storage portion 100 also has an angle with respect to a plane parallel to the vehicle bottom surface or the like as the rearview mirror 600 is tilted.

  The inventor of the present application conducted an experiment for recognizing a virtual image presented by the combiner 400 for many vehicles and various users. As a result, the longitudinal direction of the room mirror 600 and the longitudinal direction of the image display substrate storage unit 100 are the same. When the angle of the combiner 400 and the optical unit 200 is adjusted so that the user recognizes the virtual image without distortion when the head-up display 10 is installed so as to be in the direction, in many cases, the mirror surface 602 and the optical unit It was confirmed by an experiment that the angle formed by the reference surface 212 of the main body 210 is about 100 degrees.

  Here, the “reference plane” of the optical unit body 210 is an angle measurement reference plane used as a reference for measuring the inclination of the optical unit body 210 with respect to the mirror surface 602 of the rearview mirror 600. An example of the reference surface 212 is a plane including the optical axis of the optical unit main body 210 or a plane parallel thereto. As another example of the reference surface 212, the first main body surface 221 that is the lower surface when the head-up display 10 is mounted for a right-hand drive vehicle or the second main body that is a surface facing the first main body surface 221 is used. The surface 222 or a plane parallel to these surfaces. The “reference surface” of the optical unit main body 210 may be a reference surface of the optical unit 200.

  In view of the above experimental results, the head-up display 10 according to the embodiment includes the mounting member 500 and the mounting plate so that the longitudinal direction of the rearview mirror 600 and the longitudinal direction of the image display substrate storage unit 100 are the same. When the head-up display 10 is attached to the rearview mirror 600 using 571, 581, etc., an optimal image without distortion can be presented when the angle formed by the mirror surface 602 and the reference surface 212 becomes a predetermined reference angle. Designed to be Specifically, the optical unit constituting the optical system of the head-up display 10 is designed so that an optimal video can be presented under the above-described conditions.

  Here, the “optical unit constituting the optical system of the head-up display 10” generates and projects image display light based on the image signal output from the image display substrate 111 housed in the image display substrate housing unit 100. It is a system. More specifically, the light source 231, collimator lens 232, UV-IR cut filter 233, polarizer 234, fly-eye lens 235, reflector 236, field lens 237, wire grid deflection beam splitter 238 in the optical unit main body 210. , Quarter-wave plate 239, analyzer 241, and projection lens group 242, first projection mirror 351, second projection mirror 352, intermediate image screen 360 in projection unit 300, and combiner 400 all or predetermined It is a part.

  The “predetermined reference angle” is an angle formed between the mirror surface 602 and the reference surface 212 and is an angle assumed as a design reference when the head-up display 10 is optically designed. The “predetermined reference angle” may be determined by experiments so that an optimal video without distortion can be presented to many vehicles and various users. An example of the predetermined reference angle is an obtuse angle, more specifically 100 degrees. The “predetermined reference angle” is indicated by using φ in FIG.

  As described above, since the head-up display 10 according to the embodiment is designed with an optical unit that forms an optical system based on the angle formed by the mirror surface 602 and the reference surface 212 being a predetermined reference angle, Thus, the optical design is optimally adapted to the inclination of the room mirror 600 assumed in the usage state. When the head-up display 10 according to many vehicles and various user embodiments is mounted so that an optimal image without distortion can be presented, the optical unit 200 is often kept near horizontal. Since the optical unit 200 does not face the user, it is possible to reduce the feeling of pressure received by the user who is the driver.

  In FIG. 7, the image display substrate storage portion 100 attached via the attachment member 500 (not shown) is fixedly installed on the room mirror 600 directed toward the user as described above. For this reason, the image display substrate storage unit 100 can be changed in orientation similar to the orientation change applied to the room mirror 600. On the other hand, as described above, the optical unit 200 including the projection unit 300 and the combiner 400 can be integrally rotated with the hinge 113 with respect to the image display substrate storage unit 100. Therefore, regardless of the adjustment angle of the room mirror 600, the driver can adjust the image (virtual image) projected on the combiner 400 to a visible position without causing distortion.

  FIG. 8 is a view from the view of the mirror surface 602 side of the room mirror 600 of the head-up display 10 attached to the room mirror 600. As shown in this figure, the rotation surface of the hinge 113 which is a boundary surface between the image display substrate storage unit 100 and the optical unit 200 formed by the rotation of the hinge 113 is perpendicular to the mirror surface 602 and is the projection axis 320. Since the surface is parallel to the rear surface mirror 600, the rear surface mirror 600 is not crossed. Therefore, the optical unit 200 and the combiner 400 can be integrally rotated without contacting the room mirror 600 while the image display substrate storage unit 100 is fixed to the room mirror 600.

  FIGS. 9 and 10 are diagrams showing a space in which an image (virtual image) projected on the combiner 400 can be visually recognized. The optical unit 200 rotated by the above-described hinge 113 and the observation direction of the driver of the combiner 400 are illustrated. It is a figure for demonstrating a change. For example, when both the driver B with a higher eye position than the driver A uses the head-up display 10 attached to the same vehicle, the adjustment angle by the hinge 113 when the driver A uses is shown in FIG. As shown, the angle φ1. At this angle, the driver A can visually recognize the image (virtual image) projected on the combiner 400 without distortion. On the other hand, the adjustment angle by the hinge 113 when the driver B is used is an angle φ2 larger than the angle φ1 as shown in FIG. 10, and an image (virtual image) projected on the combiner 400 to the driver B at this angle φ2. ) Can be viewed without distortion. The rotation of the hinge 113 from the angle φ1 to the angle φ2 is a straight line formed mainly by the rotation surface and the mirror surface 602 of the room mirror 600 at a position where an image displayed as a virtual image is recognized by the combiner 400. Change in a direction parallel to.

  Therefore, even if the head-up display 10 of this embodiment is installed in a narrow space in the vehicle, the combiner 400 in which the projection direction of the image display light from the projection unit 300 and the image display light are projected in a space-saving manner. Can be adjusted. Moreover, since only the optical unit 200 and the combiner 400 can be moved integrally without moving the entire head-up display 10, a space in which a display image can be easily viewed can be adjusted.

[Rotation and removal of combiner and projection unit]
FIGS. 11, 12, and 13 are diagrams for explaining a case where the head-up display 10 is attached to an attachment position corresponding to a right-hand drive vehicle and an attachment position corresponding to a left-hand drive vehicle. FIG. 11 shows a state where the projection unit 300 and the combiner 400 are removed from the optical unit main body 210 in the head-up display 10 attached to the right-hand drive vehicle. In the head-up display 10 attached for a right-hand drive vehicle, the optical unit main body 210 and the combiner 400 are arranged on the right side, which is the driver side of the rearview mirror 600, when viewed from the driver side. The image display substrate storage unit 100 includes a first mounting surface 115 and a second mounting surface 117 that faces the first mounting surface 115. In FIG. 11, the first mounting surface 115 is an mounting member (not shown). It is attached to the room mirror 600 in a direction in contact with 500. The optical unit main body 210 has a first main body surface 221 on the same side as the first mounting surface 115 of the image display substrate storage unit 100. The surface of the optical unit main body 210 that faces the first main body surface 221 is referred to as a second main body surface 222.

  In the head-up display 10 shown in FIG. 11, the first mounting surface 115 of the image display substrate storage unit 100 and the first main body surface 221 of the optical unit main body 210 face downward, and the projection port 301 and the combiner of the projection unit 300. 400 is attached to the rearview mirror 600 with the lower end 404 of the 400 located on the first main body surface 221 side. Therefore, the projection axis 320 is on the first body surface 221 side (see FIG. 1).

  FIG. 12 shows a head-up display 10 attached to a left-hand drive vehicle. As shown in this figure, when mounting for a left-hand drive vehicle, the second mounting surface 117 of the image display board housing portion 100 is on the lower side, and the second mounting surface 117 is in contact with the mounting member 500 (not shown). It is attached to the room mirror 600. In this case, the optical unit main body 210 and the combiner 400 are arranged on the left side which is the driver side of the rearview mirror 600 when viewed from the driver side.

  FIG. 13 is a diagram showing the head-up display 10 attached for a left-hand drive vehicle. The second mounting surface 117 of the image display substrate storage unit 100 and the second main body surface 222 of the optical unit main body 210 are on the same side, and the projection port 301 of the projection unit 300 and the lower end 404 of the combiner 400 are The head-up display 10 is attached to the room mirror 600 in the arrangement state on the two main body surface 222 side.

  As shown in FIGS. 11 and 13, in the projection unit 300 and the combiner 400, the projection port 301 and the lower end 404 are on either the first main body surface 221 side or the second main body surface 222 side of the optical unit main body 210. Even in the state, the optical unit main body 210 can be arranged. 11 and 12, it is possible to remove the projection unit 300 and the combiner 400 from the optical unit main body 210 and change their mounting directions. Although not shown, the optical unit main body 210 and the projection unit are omitted. 300 and the combiner 400 are connected by a rotating member, and the mounting direction of each can be changed via the rotating member. That is, in the head-up display 10, the projection unit 300 and the combiner 400 can be attached to the optical unit main body 210 by changing the mounting direction, and the combiner can be changed from the projection unit 300 by changing the mounting direction. The projection axis 320 relating to the arrangement of the projection ports 301 that emit the image display light projected onto 400 and the projection direction of the image display light can be on the first main body surface 221 side or on the second main body surface 222 side. .

  As shown in FIG. 13, even when the second mounting surface 117 is on the lower side, the projection unit 301 is in a state where the projection port 301 of the projection unit 300 is on the second body surface 222 side of the optical unit body 210. Since 300 can be disposed, image display light is projected downward from the optical unit main body 210. Therefore, the projection axis 320 is on the second body surface 222 side.

  As described above, the projection unit 300 and the combiner 400 can be used even when the projection port 301 and the lower end 404 are located on either the first body surface 221 side or the second body surface 222 side of the optical unit body 210. The main body 210 can be arranged. That is, at the position where the projection port 301 of the projection unit 300 and the lower end 404 of the combiner 400 are rotated 180 ° with respect to one surface of the optical unit main body 210 (the first main body surface 221 or the second main body surface 222). The projection unit 300 and the combiner 400 can be attached. The mounting positions of the projection unit 300 and the combiner 400 with respect to the optical unit main body 210 can be changed, and the mounting positions of the projection unit 300 and the combiner 400 with respect to the first mounting surface 115 (or the second mounting surface 117) of the image display substrate storage unit 100 are also changed. it can.

[Display control device]
When the projection unit 300 and the combiner 400 are each rotated by 180 ° with respect to the optical unit main body 210 and attached, the image (virtual image) visually recognized by the combiner 400 is oriented as compared with before the attachment is changed. The top and bottom will be reversed. Therefore, in the head-up display 10, the image display board 111 outputs an image signal obtained by inverting the top and bottom of the image from that before the attachment change, by the driver setting via an operation device such as a remote controller (FIG. 17 described later). .

  Hereinafter, “upside down” of the image means to invert both the vertical direction and the horizontal direction of the original image. In other words, the original image is rotated 180 °.

  FIG. 14 is a diagram showing a relationship between a display image 700 modulated by the image display element and a projection image 760 presented to the combiner when mounted for a right-hand drive vehicle. As shown in FIG. 11, when the head-up display 10 is attached to a right-hand drive vehicle, the first main body surface 221 is on the lower side. At this time, the letter “A” that is the display image 700 modulated by the image display element 240 is inverted upside down by the projection unit 300 and projected onto the combiner 400 as a projection image 760. For this reason, in the example of FIG. 14, the display image “A” to be displayed by the image display element 240 is inverted in advance and the light from the light source is modulated to display an appropriate image on the combiner 400.

  FIG. 15 is a diagram showing a relationship between a display image 700 modulated by the image display element and a projection image 760 presented to the combiner when mounted for a left-hand drive vehicle. As shown in FIG. 13, when the head-up display 10 is attached to a left-hand drive vehicle, the second main body surface 222 is on the lower side. At this time, similarly to FIG. 14, when the display image “A” is inverted in advance and the light from the light source is modulated, the projection unit 300 inverts the image, and the projection image 760 is projected onto the combiner 400 in a state of being inverted upside down. Is done. Therefore, depending on how the optical unit 200 is attached, control for making the top and bottom of the projection image appropriate is necessary. Hereinafter, the control will be described.

  FIG. 16 is a block diagram illustrating a configuration of the display control apparatus 1000. The display control apparatus 1000 includes an image generation unit 1100 and an image display unit 1200, and performs control related to a display image presented by the head-up display 10.

  The image generation unit 1100 receives an image signal output from an external device 1600 such as a navigation system or a smartphone, and generates an image signal of an image to be projected on the combiner 400. The image generation unit 1100 acquires an operation signal from the operation device 1400 such as a remote controller and vehicle information from the in-vehicle sensor group 1500 and controls an image signal to be generated.

  The image display unit 1200 receives an image signal and a control signal output from the image generation unit 1100, and drives a light source and an image display element included in the optical unit 200. In addition, the image display unit 1200 acquires detection information from the optical unit sensor group 1300 provided in the image display substrate storage unit 100 or the optical unit 200 and controls image display light to be projected on the optical unit 200.

  In the present embodiment, the image generation unit 1100 is realized by an image generation substrate included in the image generation substrate storage unit 150, and the image display unit 1200 is realized by an image display substrate included in the image display substrate storage unit 100. It will be described as a functional block. The display control apparatus 1000 including the image generation unit 1100 and the image display unit 1200 may be a functional block that is distributed and arranged in both the image display substrate storage unit 100 and the image generation substrate storage unit 150, or may be integrated. It may be arranged in one storage part.

  Hereinafter, each block shown in the block diagram of the present specification can be realized in hardware by an element such as a CPU of a computer or a mechanical device, and in software by a computer program or the like. Then, the functional block realized by those cooperation is drawn. Therefore, those skilled in the art will understand that these functional blocks can be realized in various forms by a combination of hardware and software.

  The image generation unit 1100 is an information processing unit 1140 that generates an image using an input signal from the external device 1600, an operation reception unit 1170 that receives an operation from a user, and information that acquires vehicle information from the in-vehicle sensor group 1500. An acquisition unit 1180 and an image control unit 1110 that controls processing of the image processing unit 1140 are included.

  The information acquisition unit 1180 acquires vehicle information from the in-vehicle sensor group 1500 and transmits the acquired vehicle information to the image control unit 1110. Specific examples of vehicle information acquired from the in-vehicle sensor group 1500 include vehicle speed information, snake angle information, GPS signals, and parking brake status information.

  The operation reception unit 1170 receives an operation signal from the operation device 1400 such as the remote controller 1410 and transmits the received signal to the image control unit 1110. The operation receiving unit 1170 has an infrared light receiving unit (not shown) in order to receive an operation signal from the remote controller 1410. Note that an operation button (not shown) may be provided in the display control apparatus 1000 as a device for operation input by the user, and a signal from the operation button may be received.

  FIG. 17 is a diagram showing a remote controller 1410 used as the operating device 1400. The remote controller 1410 includes a cross key 1415 for inputting a direction operation, a determination key 1416 for inputting a selection operation, and an infrared transmission unit 1418 that transmits the key input to the operation reception unit 1170 as an infrared signal. The cross key 1415 includes direction keys 1411 to 1414 that respectively represent the up, down, left, and right directions.

  FIG. 18 is a block diagram illustrating a functional configuration of the image processing unit 1140. The image processing unit 1140 includes an operation image generation unit 1142, an image acquisition unit 1144, an image composition unit 1146, and an image transmission unit 1148.

  The operation image generation unit 1142 generates an operation image called an on-screen display with reference to image information held in a memory (not shown) included in the image generation unit 1100. The operation image generation unit 1142 transmits the generated image signal to the image transmission unit 1148.

  FIG. 19 is a diagram illustrating the top-and-bottom setting image 730 generated by the operation image generation unit 1142. The top-and-bottom setting image 730 includes a first image 710 indicating the first option and a second image 720 obtained by inverting the image indicating the second option. For example, the first image 710 is a display of “Right”, and the first option corresponding to the first image 710 indicates that setting for a right-hand drive vehicle is performed. The second image 720 is obtained by reversing the display of “Left”, and the second option corresponding to the second image 720 indicates that setting for a left-hand drive vehicle is performed.

  The operation image generation unit 1142 switches the image to be generated according to the operation signal received by the operation reception unit 1170. FIG. 20 is a diagram showing a top and bottom setting image 730 showing a state where the first option can be selected, and FIG. 21 is a diagram showing a top and bottom setting image 730 showing a state where the second option can be selected. When the operation reception unit 1170 receives a selection operation of the first option by the user operating the remote controller 1410, the operation image generation unit 1142 displays the top and bottom setting image 730 of FIG. 20 with the first image 710 highlighted. Generate. On the other hand, when the operation reception unit 1170 receives the selection operation of the second option, the operation image generation unit 1142 generates the top and bottom setting image 730 of FIG. 21 with the second image 720 highlighted.

  Further, the operation image generation unit 1142 generates an operation image in accordance with the operation signal received by the operation reception unit 1170. FIG. 22 is a diagram illustrating an operation image 731 generated by the operation image generation unit 1142. FIG. 22 shows an operation image 731 for selecting a language included in the display image projected by the head-up display 10. In FIG. 22, the display of “Language” is highlighted as the selection image 735 so that it can be seen that the operation image 731 is for language selection. Note that a direction image 739 indicating that the user can operate in the vertical direction may be included above and below the selection image 735.

  The operation image generation unit 1142 changes the operation image to be generated according to the operation signal received by the operation reception unit 1170. FIG. 23 is a diagram illustrating the operation image 732 after the downward input operation is received while the operation image 731 of FIG. 22 is being displayed. If the user presses down key 1412 on remote controller 1410 while operation image 731 in FIG. 22 is displayed, operation reception unit 1170 receives an operation signal, and operation image generation unit 1142 displays the operation image shown in FIG. 732 is generated. For example, the highlighted selection image 735 is switched to a selection image 736 that is a display of “Brightness”. Thereby, it can show to the user that the illumination intensity adjustment of the display image light which the head-up display 10 projects is possible.

  FIG. 24 is a diagram showing the operation image 733 after accepting a determination input operation while the operation image 731 of FIG. 23 is being displayed. When the user presses the enter key 1416 of the remote controller 1410 while the operation image 731 of FIG. 23 is displayed, the operation reception unit 1170 receives an operation signal, and the operation image generation unit 1142 displays the operation image 733 shown in FIG. Is generated. For example, the highlighted selection image 735 is switched to a selection image 737 that is a display of “25”. Further, the display position of the direction image 739 is switched to the vertical position of the selection image 737. Thereby, it can show to a user that the numerical value of illumination intensity can be changed.

  FIG. 25 is a diagram showing the operation image 734 after receiving an upward input operation while the operation image 733 of FIG. 24 is being displayed. 25, the selection image 737 is switched to the selection image 738 in which “26” is displayed with respect to the operation image 733 of FIG. Thereby, it can be shown to a user that the numerical value of illumination intensity can be set high. When the user further performs an input operation in the vertical direction, the numerical value of illuminance changes according to the input operation.

  The image acquisition unit 1144 acquires an image signal output from an external device 1600 such as a navigation system or a smartphone based on an instruction from the image control unit 1110. FIG. 26 is a diagram illustrating an acquired image 740 acquired by the image acquisition unit 1144 from the external device 1600. The image acquisition unit 1144 acquires the navigation image shown in FIG. 22 generated by the navigation system and transmits it to the image composition unit 1146.

  The image acquisition unit 1144 acquires an analog image signal through a composite video terminal (RCA terminal) or a separate video terminal (S terminal) (not shown) provided in the display control apparatus 1000. In addition, a digital image signal may be acquired through a USB (universal serial bus) terminal or an HDMI (High Definition Multimedia Interface) terminal.

  Based on an instruction from the image control unit 1110, the image composition unit 1146 synthesizes a composite image signal in which the image generated by the operation image generation unit 1142 and the image acquired by the image acquisition unit 1144 are superimposed. The image synthesis unit 1146 transmits the synthesized image signal to the image transmission unit 1148.

  FIG. 27 is a diagram illustrating a composite image in which an operation image and an acquired image are superimposed. In the composite image 750 of FIG. 27, the operation image 732 shown in FIG. 23 generated by the operation image generation unit 1142 is superimposed on the acquisition image 740 shown in FIG. 26 acquired by the image acquisition unit 1144. The composite image shown in FIG. 27 is an example, and the composite image superimposed by the image composition unit 1146 changes according to the acquired image and the operation image acquired at that time.

  The image transmission unit 1148 receives the image signal generated by the operation image generation unit 1142 and the image signal combined by the image combination unit 1146 and transmits them to the image display unit 1200. At this time, the image signal to be transmitted to the image display unit 1200 is switched based on an instruction from the image control unit 1110.

Returning to FIG. 16, the image controller 1110 will be described.
The image control unit 1110 transmits a control signal to the image processing unit 1140 and the image display unit 1200 based on signals acquired from the operation reception unit 1170 and the information acquisition unit 1180. For example, when the operation receiving unit 1170 receives an input operation from the user via the remote controller 1410, the image control unit 1110 generates an image signal according to the content of the input operation from the user to the image processing unit 1140. Instruct. Specifically, it instructs generation of an image signal for displaying the images of FIGS.

  At this time, before and after the first option or the second option is selected, the method of instructing the image processing unit 1140 for the input operation from the user is changed. Before the first option or the second option is selected, the image control unit 1110 generates an image signal generated for the image processing unit 1140 regardless of which of the cross keys 1411 to 1414 of the remote controller 1410 is input. Is switched between FIG. 20 and FIG. On the other hand, after the first option or the second option is selected, the image processing unit 1140 is instructed to generate an operation image corresponding to the corresponding input direction according to the direction key input by the user.

  In response to an input operation from the user, the image control unit 1110 instructs the image display unit 1200 to adjust the illuminance, color, and contrast, and instructs the image processing unit 1140 to change the language included in the operation image. To do.

  Further, the image control unit 1110 controls the image signal that the image display unit 1200 acquires from the image transmission unit 1148. For example, before the first option or the second option is selected, the image display unit 1200 acquires the image signal generated by the operation image generation unit 1142, and after the first option or the second option is selected, The image display unit 1200 acquires the image signal synthesized by the image synthesis unit 1146.

  Further, the image control unit 1110 instructs the image display unit 1200 to invert the display image to be projected on the optical unit 200. The image control unit 1110 does not instruct the image display unit 1200 to turn the display image upside down when the top and bottom setting image 730 shown in FIG. After that, when the first option corresponding to the first image 710 shown in FIG. 20 is selected and determined by an input operation from the user, the instruction to invert the display image to the top and bottom is not given to the image display unit 1200. To do. On the other hand, when the second option corresponding to the second image 720 shown in FIG. 21 is selected and determined, the image display unit 1200 is instructed to invert the display image.

  Note that the image control unit 1110 holds information about which one of the first option and the second option is selected and determined in a memory (not shown) included in the image generation unit 1100. When the display control apparatus 1000 is activated, if the selection result of the first option or the second option is not held in the memory, the image processing unit 1140 is instructed to generate the top and bottom setting image 730 shown in FIG. On the other hand, when the display control apparatus 1000 is activated, when the selection result of the first option or the second option is held in the memory, the display image is inverted to the image display unit 1200 according to the selection result. Instruct whether or not. In this case, the image processing unit 1140 is not instructed to generate the top and bottom setting image 730 shown in FIG.

  The image display unit 1200 includes a drive unit 1270 that drives elements included in the optical unit 200, a display adjustment unit 1240 that adjusts an image signal acquired from the image generation unit 1100, and a display control unit 1210 that controls them. .

  The display adjustment unit 1240 acquires an image signal from the image processing unit 1140 based on an instruction from the display control unit 1210, and performs brightness adjustment and top / bottom inversion processing of the acquired image. The display adjustment unit 1240 transmits a control signal to the drive unit 1270 based on the image signal that has been subjected to the brightness adjustment and the upside down process.

  The display control unit 1210 controls the display adjustment unit 1240 and the drive unit 1270 based on instructions acquired from the image generation unit 1100 and information acquired from the optical unit sensor group 1300. The optical unit sensor group 1300 includes an illuminance sensor 1310 that detects the brightness around the combiner 400 and a temperature sensor 1350 that detects the temperature of the light source.

  For example, the display control unit 1210 instructs the display adjustment unit 1240 to adjust the brightness based on the illuminance detected by the illuminance sensor 1310. When the illuminance of outside light is high on a sunny day, the display adjustment unit 1240 is instructed to increase the brightness of the image display light projected by the optical unit 200 in order to increase the visibility of the user. On the other hand, when the illuminance of outside light is low during rainy weather or at night, the user instructs to reduce the brightness of the image display light so that the image display light does not feel dazzling. In addition, when the temperature of the light source detected by the temperature sensor 1350 is high, the display adjustment unit 1240 may be instructed to decrease the brightness of the light source in order to decrease the temperature of the light source.

  The display control unit 1210 instructs the display adjustment unit 1240 to invert the display image based on an instruction from the image generation unit 1100. When the user determines the first option, the display image is not inverted based on an instruction from the image generation unit 1100. However, when the user determines the second option, the display image is inverted. Instruct.

  The driving unit 1270 drives the light source and the image display element included in the optical unit 200 based on the control signals acquired from the display control unit 1210 and the display adjustment unit 1240. For example, when an image signal that is not upside down is acquired from the display adjustment unit 1240, a display image that is not upside down is projected onto the optical unit 200. On the other hand, when an image signal that has been upside down is acquired from the display adjustment unit 1240, the display image that has been upside down is projected onto the optical unit 200. Based on the brightness adjustment instruction from the display control unit 1210, the output of the light source is adjusted and the control signal to the image display element is adjusted.

The operation of the display control apparatus 1000 having the above configuration will be described.
FIG. 28 is a flowchart showing the flow of processing of the display control apparatus 1000. First, the case where the head-up display 10 is attached for a right-hand drive vehicle will be described.

  When the head-up display 10 is activated, the image control unit 1110 determines whether initial setting is necessary (S10). When the selection result of the first option or the second option is not held in the memory of the image generation unit 1100, the image control unit 1110 determines that initial setting is necessary (Y in S10). The image processing unit 1140 generates the top and bottom setting image 730 shown in FIG. 20, and the image display unit 1200 causes the optical unit 200 to project the image display light of the top and bottom setting image 730 (S12). At this time, since the head-up display 10 is attached to a right-hand drive vehicle, the top-and-bottom setting image 730 shown in FIG.

  When the user operates the cross key 1415 of the remote controller 1410 (Y in S14), the top and bottom setting image 730 in FIG. 20 is switched, and the image display light of the top and bottom setting image 730 shown in FIG. 21 is projected (S16). At this time, no matter which direction of the cross keys 1411 to 1414 is input, FIG. 20 and FIG. 21 are alternately switched. When the cross key 1415 is not operated, the top-and-bottom setting image 730 is not switched (N in S14).

  When the user operates the enter key 1416 of the remote controller 1410 (Y in S18), the image control unit 1110 determines whether the first option or the second option is selected (S20). As shown in FIG. 20, when the determination key 1416 is operated in a state where the first image 710 corresponding to the first option is selected, it is determined that the first option has been selected (Y in S20). On the other hand, as shown in FIG. 21, when the determination key 1416 is operated in a state where the second image 720 corresponding to the second option is selected, it is determined that the second option is selected (N in S20). If the enter key 1416 is not operated (N in S18), the input operation of the cross key 1415 is awaited (S14).

  When the first option is selected (Y in S20), the image control unit 1110 does not instruct the image display unit 1200 to invert the display image, so that a projection image with an appropriate vertical direction is projected (S22). ). FIG. 29 is a diagram showing a projected image 760 after the first option is selected in the case of attachment for a right-hand drive vehicle. The projection image 760 at this time is based on the image signal synthesized by the image synthesis unit 1146. A user attached for a right-hand drive vehicle can visually recognize a projection image 760 projected in an appropriate top-and-bottom direction by selecting the first option in the initial setting.

  When the second option is selected (N in S20), the image control unit 1110 instructs the image display unit 1200 to invert the display image so that the display image with the inverted image is projected. FIG. 30 is a diagram illustrating a projection image 760 after the second option is selected when the vehicle is mounted for a right-hand drive vehicle. When a user attached for a right-hand drive vehicle selects the second option in the initial setting, the projection image 760 is inverted upside down, and the projection image 760 in an appropriate vertical direction cannot be visually recognized.

  If the initial setting has already been performed, the image control unit 1110 determines that the initial setting is unnecessary (N in S10), and confirms the contents of the options stored in the memory (S26). At this time, if the first option is held (Y in S20), the display image is projected without upside down, and if the second option is held (N in S20), the top and bottom are projected. Invert and project the display image. Thus, once the initial setting is performed, it is not necessary to perform the setting every time the head-up display 10 is activated, and the projection image is always projected in an appropriate top-and-bottom direction.

  Further, after the first option or the second option is selected, an operation image corresponding to the input direction is displayed according to the input direction of the cross key from the user (S26). Thereby, the direction of the user's input operation and the change direction of the highlight display position can be matched, and the user can operate the operation image without a sense of incongruity.

  Next, the case where the head-up display 10 is attached for a left-hand drive vehicle will be described. The following description will focus on differences from the right-hand drive vehicle.

  FIG. 31 is a diagram showing a projected image that presents a state in which the first option can be selected when it is mounted for a left-hand drive vehicle. When mounted for a left-hand drive vehicle, the mounting surface of the optical unit 200 is reversed, so that the top-and-bottom setting image 730 projected in S12 is a reverse of FIG. 20 as shown in FIG. Accordingly, the first image 710 showing the first option is projected upside down after being inverted, and the second image 720 showing the second option is projected upside down without being inverted.

  FIG. 32 is a diagram showing a projection image that presents a state in which the second option can be selected when it is mounted for a left-hand drive vehicle. When the user operates the cross key 1415 (Y in S14), the top and bottom setting image 730 in FIG. 32 is projected (S16).

  At this time, since the projected image is projected upside down, the up / down / left / right directions recognized by the user with respect to the projected image and the up / down / left / right directions received by the operation accepting unit 1170 are reversed. However, no matter which direction of the cross keys 1411 to 1414 is input, FIG. 31 and FIG. 32 are alternately switched, so that the user can operate without a sense of incongruity and select the second option.

  Thereafter, when the enter key 1416 is operated (Y in S18), it is determined that the second option has been selected (N in S20), and the display image is inverted upside down (S24). Then, as shown in FIG. 29, a projected image 760 projected in the correct top-and-bottom direction can be visually recognized.

  Further, after the second option is selected, an operation image corresponding to the input direction is displayed according to the input direction of the cross key from the user (S26). At this time, since the projected image is projected without being upside down, the up / down / left / right directions recognized by the user with respect to the projected image coincide with the up / down / left / right directions received by the operation accepting unit 1170. Accordingly, the direction of the user's input operation and the change in the operation image can be matched, and the user can operate the operation image without a sense of incongruity.

  A user attached for a right-hand drive vehicle can visually recognize a projection image 760 projected in an appropriate vertical direction by selecting a first image 710 having an appropriate vertical direction shown in FIG. Moreover, the user attached for the left-hand drive vehicle can visually recognize the projection image 760 projected in the appropriate top-and-bottom direction by selecting the second image 720 having the appropriate top-and-bottom direction shown in FIG. Therefore, regardless of the direction of attachment, the initial setting can be appropriately performed by selecting an image in which the vertical direction is appropriate, which is very easy for the user to understand.

  In addition, in the top and bottom setting image for selecting the first option or the second option, the top and bottom setting image is alternately switched regardless of which direction of the cross keys 1411 to 1414 is input, so that the user performs an input operation without feeling uncomfortable. The first option or the second option can be selected. Then, after selecting the first option or the second option, both when attached to the right-hand drive vehicle and when attached to the left-hand drive vehicle, the up / down / left / right directions recognized by the user with respect to the projection image, Since the up, down, left, and right directions received by the operation receiving unit 1170 match, the user can perform an input operation without a sense of incongruity.

  Note that the first image and the second image generated by the operation image generation unit 1142 are not limited to the images shown in FIG. For example, “right” and “left” display in Japanese may be employed, and display of characters indicating left and right in other languages may be employed. Also, a display showing left and right arrows may be adopted. In addition, depending on the image adopted as the first image, the contents meant by the first option corresponding to the first image may be appropriately changed according to the environment in which the head-up display 10 is used.

  Further, the direction of the input operation accepted by the operation accepting unit 1170 is not limited to the cross direction. Only two upper and lower directions may be accepted, or an oblique direction input may be accepted.

    Further, in the above-described embodiment, the room mirror 600 may be a mirror used for confirming the rear side of the vehicle, and the position of the mirror in the vehicle is not limited. The head-up display 10 is attached to the rearview mirror 600, but may be used on the dashboard. Further, a display device such as a liquid crystal display device or an organic EL display device may be disposed at the position of the combiner 400 to form a vehicle display device.

  10 head-up display, 200 optical unit, 700 display image, 710 first image, 720 second image, 730 top and bottom setting image, 731, 732, 733, 734 operation image, 1000 display control device, 1100 image generation unit, 1110 image Control unit, 1140 Image processing unit, 1142 Operation image generation unit, 1144 Image acquisition unit, 1146 Image composition unit, 1170 Operation reception unit, 1200 Image display unit, 1210 Display control unit, 1240 Display adjustment unit, 1270 Drive unit, 1600 External machine.

Claims (5)

An image processing unit for generating an image signal of a display image;
An image signal of a display image generated by the image processing unit is acquired, and the display is provided on the optical unit capable of attaching either the first attachment surface or the second attachment surface opposite to the first attachment surface to the attachment member. An image display unit for projecting image display light of the image;
A display control device comprising:
The image processing unit generates a top and bottom setting image including a first image indicating a first option and a second image indicating a second option obtained by reversing the first image and the top and bottom,
The image display unit
The top-and-bottom setting image is formed regardless of whether the first attachment surface of the optical unit is attached to the attachment member or the second attachment surface of the optical unit is attached to the attachment member. A display control apparatus that projects image display light of an image in which either the first image or the second image is upright. An operation receiving unit that receives a selection operation of the first option or the second option from a user;
A control unit that instructs the image display unit to turn the display image upside down when the operation receiving unit receives a selection operation of the second option;
Further comprising
When the control unit is instructed to invert the display image, the image display unit performs an upside-down inversion process on the image signal of the display image acquired from the image processing unit. The display control apparatus according to claim 1, wherein image display light is projected. The image processing unit
An image acquisition unit for acquiring an image signal from an external device;
An operation image generation unit that generates an image according to the operation received by the operation reception unit;
An image synthesis unit that synthesizes an image signal in which the image generated by the operation image generation unit and the image acquired by the image acquisition unit from an external device are superimposed;
With
The controller is
Before the operation accepting unit accepts the selection operation of the first option or the second option, the image display unit acquires the image signal generated by the operation image generating unit,
The image display unit causes the image display unit to acquire an image signal combined by the image combining unit after the operation receiving unit receives the selection operation of the first option or the second option. The display control apparatus described.   The display control apparatus according to claim 1, wherein the first image and the second image include information indicating a specific direction.   The display control apparatus according to claim 4, wherein the first image and the second image include information indicating left and right.

Images