JP6353632B2 - Head-up display device - Google Patents

Description

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

  2. Description of the Related Art Head-up display devices (hereinafter sometimes referred to as HUD devices) that are devices for superimposing various types of information such as navigation information and outside scenes to be visually recognized by vehicle occupants are known in various configurations. (For example, refer to Patent Document 1 and Patent Document 2).

Japanese Patent Application Laid-Open No. 07-266925 JP 2011-209617 A

  In the HUD devices disclosed in Patent Document 1 and Patent Document 2, the display image projected from the projection unit is reflected by the reflecting mirror, and the reflected image from the reflecting mirror is projected onto the windshield (windshield). Thus, information is displayed in a display area provided on the windshield. A user visually recognizes the windshield and grasps the information. The position of the display area (display position) on the windshield is adjusted by appropriately changing the display adjustment angle (rotation angle) of the reflecting mirror.

  Further, in the HUD device, a translucent combiner (half mirror) that transmits the light from the front of the vehicle and reflects the display image projected from the projection unit to superimpose the scenery in front of the vehicle and the display image. ) With a combiner type. The user visually recognizes the display area formed on the combiner and grasps information included in the display image. The combiner is rotatably provided, and the position (display position) of the display area in the combiner is adjusted by changing the display adjustment angle of the combiner.

  In these HUD devices, it is necessary to adjust the display position for each user.

  Regarding the adjustment of the display position, some HUD devices have a function of manually adjusting the display position by using an operation button and an automatic adjustment function of automatically adjusting the display position by detecting the driver's line of sight. is there. However, since the cost increases, the number of HUD devices equipped with an automatic adjustment function is small, and HUD devices using operation buttons for adjustment are common.

  In the case of this manual HUD device, when the operation button is pressed, a motor for rotationally driving the reflecting mirror or the combiner is rotated, and the display adjustment angle of the reflecting mirror or the combiner is changed by the driving force of the motor. The user adjusts the display position to an appropriate position by appropriately pressing the operation buttons.

  In recent years, there has been a demand for a HUD device with improved operability in such display position adjustment operation.

  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a head-up display device with improved operability in a display position adjustment operation.

In order to achieve the above-described object, a head-up display device according to the present invention is characterized by the following (1) to ( 4 ).
(1) an input unit for receiving an adjustment input signal among various input signals;
A projection unit that projects a display image including various types of information;
A combiner that is rotationally driven according to the adjustment input signal and reflects the display image projected from the projection unit to form a display area;
Comprising a head-up display device mounted on a vehicle and used.
The display area includes a first area that displays angle information representing a current display adjustment angle of the combiner as a part of the display image,
The input unit further accepts a start input signal;
When the input unit receives the start input signal, transition to the adjustment mode, only during the period of the adjustment mode, the angle information is displayed in the first region ,
The angle information is displayed in the first area by a scale display by an adjustment range that is a scale and a bar that indicates a part of the adjustment range.
about.
(2) an input unit for receiving an adjustment input signal among various input signals;
A projection unit that projects a display image including various types of information;
A combiner that is rotationally driven according to the adjustment input signal and reflects the display image projected from the projection unit to form a display area;
Comprising a head-up display device mounted on a vehicle and used.
The display area includes a first area that displays angle information representing a current display adjustment angle of the combiner as a part of the display image,
The display area further includes a second area for displaying a numerical value as a part of the display image, and when the current speed of the vehicle is equal to or greater than a predetermined threshold, A numerical value representing the current speed is displayed, and when the current speed of the vehicle is less than the predetermined threshold, a numerical value representing the angle information displayed in the first area is displayed.
about.
( 3 ) The head-up display device according to (1) or (2 ) above,
Further provided with an alarm output unit capable of outputting an alarm,
The combiner is rotatable between a lower limit position and an upper limit position;
The warning output unit outputs the warning when the combiner reaches the vicinity of the lower limit position or the upper limit position.
about.
( 4 ) an input unit that receives an adjustment input signal among various input signals;
A projection unit that projects a display image including various types of information;
A reflection plate that is driven to rotate according to the adjustment input signal and reflects the display image projected by the projection unit to guide the display image;
A head-up display device in which the display image is displayed in a display area on the display surface,
The display area includes a first area for displaying angle information representing a position of the current display adjustment angle of the reflector in the adjustable range of the display adjustment angle of the reflector as a part of the display image. ,
The angle information is displayed in the first area by a scale display by an adjustment range that is a scale and a bar that indicates a part of the adjustment range.
about.

  By the way, in the conventional combiner-type HUD device, when the user adjusts the display position using the operation buttons, the upper limit position or the lower limit position where the display adjustment angle (rotation angle) of the combiner is the limit point of the rotatable range. Is reached, the rotation of the motor for rotating the combiner is stopped and mechanically locked, or the motor is stopped near the upper limit position or the lower limit position so that no load is applied to the mechanism section. It is common to do.

  However, in the conventional HUD device, the user cannot grasp the current display adjustment angle of the combiner at the start of adjustment and during the adjustment operation. That is, the user cannot grasp how much the current display adjustment angle of the combiner corresponds to within the rotatable range. Therefore, when the combiner is stopped at the upper limit position or the lower limit position of the rotatable range and the user presses the button corresponding to the rotation of the combiner toward the limit point, the motor cannot rotate. The user may misrecognize that the HUD device is out of order.

  In addition, since a mechanical stopper is provided at the motor position corresponding to the limit point of the combiner's rotatable range, the user continues to press the button for rotating the combiner in the limit point direction. There is a possibility that vibration and abnormal noise may occur in the combiner.

On the other hand, according to the head-up display device having the above configuration (1), when the display adjustment angle of the combiner is adjusted while visually checking the combiner, the user can use the angle information displayed in the first area. You can grasp the current display adjustment angle of the combiner. Thereby, even if the combiner stops at the limit point of the rotatable range and becomes unable to rotate, the user can recognize that it is not in failure. In addition, it is possible to prevent the occurrence of vibrations and abnormal noise of the combiner due to the continued operation for rotating the combiner in the limit point direction. Therefore, according to the head-up display device having the configuration (1), it is possible to provide a head-up display device with improved operability in the display position adjustment operation.
Furthermore, in the head-up display device having the above configuration (1), when the input unit receives a start input signal input when the user presses the operation button, angle information indicating the display adjustment angle of the combiner is displayed. Displayed in the first area. Accordingly, since the angle information is not displayed when the user is in an adjustment mode other than the adjustment mode for adjusting the display position, unnecessary information can be prevented from being displayed in the display area.
Furthermore, according to the head-up display device having the above configuration (1), the angle information is presented by the scale display, so that the user can intuitively grasp the display adjustment angle of the combiner. Further, since the angle information is presented by a scale display, the user can grasp how much the current display adjustment angle corresponds to within the rotatable range. In addition, the user can easily grasp that the current display adjustment angle is approaching the limit point of the rotatable range.
According to the head-up display device having the configuration (2), since the angle information is also displayed as a numerical value, the user can accurately and immediately grasp the current display adjustment angle of the combiner.
According to the head-up display device having the above configuration ( 3 ), an alarm is output when the display adjustment angle of the combiner approaches the limit point. Therefore, the user is informed that the display adjustment angle of the combiner has approached the limit point. Is easy to notice.
According to the head-up display device having the above configuration ( 4 ), the display image projected from the projection unit is reflected by the reflecting plate (reflecting mirror), and the reflected image is projected onto the display surface (front glass, windshield). In the head-up display device that displays information in the display area formed on the display surface, as in the case of the combiner type, when adjusting the display position by changing the display adjustment angle of the reflector, The user can grasp the current display adjustment angle of the reflector from the angle information displayed in the first area. Thereby, even if the reflector stops at the limit point of the rotatable range and becomes unable to rotate, the user can recognize that it is not in failure.
Furthermore, according to the head-up display device having the above configuration (4), the angle information is presented by the scale display, so that the user can intuitively grasp the display adjustment angle of the combiner. Further, since the angle information is presented by a scale display, the user can grasp how much the current display adjustment angle corresponds to within the rotatable range. In addition, the user can easily grasp that the current display adjustment angle is approaching the limit point of the rotatable range.

  ADVANTAGE OF THE INVENTION According to this invention, the head-up display apparatus which improved the operativity in adjustment operation of a display position can be provided.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a diagram illustrating a hardware configuration of the HUD device 1 according to the first embodiment. FIG. 2A is a diagram illustrating an installation state of the HUD main body 10 in the vehicle interior, and FIG. 2B is a diagram illustrating an appearance of the HUD main body 10. 3A and 3B are views showing the appearance of the button operation unit 35. FIG. 3A shows a case where the button operation unit 35 has a vertically long shape, and FIG. 3B shows a shape where the button operation unit 35 has a horizontally long shape. Is shown. FIG. 4 is a diagram for explaining a display image displayed on the combiner 11. FIG. 4A shows a display image displayed on the combiner 11 at an appropriate position, and FIG. FIG. 4C shows a display image in a state where the display area 11a is shifted downward and a part thereof is missing. FIG. 5 is a flowchart showing an operation procedure of the HUD device 1. FIG. 6 is a diagram showing an adjustment mode notification screen 61 displayed on a display in the meter 41 installed on the dashboard 53. 7A and 7B are diagrams showing a display image in the display area 11a in the adjustment mode. FIG. 7A shows a case of simple display, and FIG. 7B shows a case of detailed display. FIG. 8 is a flowchart showing an operation procedure of the HUD device 1 in the second embodiment. FIG. 9 is a diagram showing a display image in the display area 11a when the limit point of the adjustment range is reached. FIG. 10 is a diagram for explaining another application example.

  Hereinafter, a head-up display device according to an embodiment will be described with reference to the drawings. The HUD device of this embodiment is applied to a combiner-type HUD device that is mounted on a vehicle and used.

(First embodiment)
FIG. 1 is a diagram illustrating a hardware configuration of the HUD device 1 according to the first embodiment. The HUD device 1 includes a HUD main unit 10, a microcomputer 21, a power supply unit 22, an adjustment switch (button) 24, a start switch (button) 25, an indicator 27, a sensor unit 31, a drive buffer 30, and various interfaces (I / F). 23, 26, 28, 29.

  The HUD main body 10 includes a combiner 11, a display unit 12, a backlight 14, a display circuit 15, a motor 16, a mechanism unit 17, proximity sensors 18, 19 and the like.

  The combiner 11 is a transparent or translucent reflector, and transmits a light from the vehicle front indicated by an arrow in FIG. 1 and displays a display image projected from the display unit 12 located on the rear side (driver side). By reflecting the included light, the front scene and the display image are superimposed and displayed. The combiner 11 is formed in a substantially trapezoidal plate shape, and is driven to rotate freely within a predetermined rotation range in the direction of arrow e in the drawing by the mechanism portion 17 as will be described later.

  The display unit 12 (projection unit) includes a plurality of display elements that form a display image including various types of information in accordance with signals from the display circuit 15, and receives the light from the backlight 14 and displays the display image on the combiner 11. Project.

  The mechanism portion 17 includes a motor 16 and a ball screw driven by the motor 16, and the nut portion 17a slides up and down along the screw shaft 17b as the screw shaft 17b of the ball screw rotates. Thereby, the combiner 11 fixed to the nut portion 17a slides in the vertical direction. The nut portion 17a has a storage position (the position of the nut portion 17a indicated by a dotted line in FIG. 1) where the combiner 11 is stored in the housing of the HUD main body portion 10, and the combiner 11 from the housing of the HUD main body portion 10. It is configured to be slidable between a protruding position (a position of the nut portion 17a indicated by a solid line in FIG. 1) in a protruding state.

The nut portion 17a is configured so as to be slidable further upward from the protruding position to a predetermined position, although the detailed mechanism is not shown. The nut portion 17a rotates rearward in accordance with the upward movement. Corresponding to the rearward rotation of the nut portion 17a, the combiner 11 fixed to the nut portion 17a rotates rearward. That is, the combiner 11 corresponds to the upward sliding movement from the protruding position of the nut portion 17a, and the combiner 11 indicated by the solid line in FIG. 1 and the combiner 11 indicated by the dotted line in FIG. It is comprised so that it can rotate between the lower limit positions which are the positions (rotatable range).
In the present embodiment, the configuration in which the combiner 11 is slid and rotationally driven by the driving force of one motor is illustrated, but other configurations may be used as long as the combiner 11 is rotatably driven. Absent.

The proximity sensors 18 and 19 are arranged in the vicinity of the upper end and the lower end of the screw shaft 17b, detect the position of the nut portion 17a screwed to the screw shaft 17b, and output a detection signal corresponding to the position to the sensor unit 31. To do. The sensor unit 31 detects the display adjustment angle (rotation angle) of the combiner 11 based on the detection signals output from the proximity sensors 18 and 19, and transmits it to the microcomputer 21.
In the present embodiment, the microcomputer 21 is configured to detect the display adjustment angle of the combiner 11 by the proximity sensors 18 and 19. However, for example, the current display of the combiner 11 based on the control signal input to the motor 16. It may be configured to calculate and grasp the adjustment angle.

  The microcomputer 21 (control unit) has a known CPU (Central Processing Unit), ROM (Read Only Memory), RAM (Random Access Memory), and the like, and controls the entire HUD device 1. The microcomputer 21 generates a signal for controlling the display content of the display image projected on the combiner 11 and outputs the signal to the display circuit 15. Further, the microcomputer 21 controls driving of the motor 16 via the driving buffer 30 based on the display adjustment angle of the combiner 11 detected by the sensor unit 31. The microcomputer 21 is connected to the meter 41 via the interface 28 (reception unit), receives a speed signal indicating the current traveling speed of the vehicle from the meter 41, and outputs information related to mode selection to the meter 41 as described later. To do.

  The adjustment switch 24 and the start switch 25 are button switches operated by a user such as a driver. When the start switch 25 is pressed, the start switch 25 outputs a start input signal for starting adjustment of the display adjustment angle of the combiner 11 to the microcomputer 21. The adjustment switch 24 outputs an adjustment input signal for changing the display adjustment angle of the combiner 11 to the microcomputer 21. That is, the microcomputer 21 has a function as an input unit that receives various input signals.

  The indicator 27 is composed of a light emitting diode (LED), and is turned on when the start switch 25 is pressed, as shown in FIG. 3, and displays the current stop position of the combiner 11 on a scale display. When the microcomputer 21 receives a start input signal from the start switch 25, the microcomputer 21 turns on the indicator 27. The start switch 25, the adjustment switch 24, and the indicator 27 are provided in the vicinity of the meter 41 of the dashboard 53 as a button operation unit 35 (see FIG. 3) separately from the HUD main body unit 10 (see FIG. 6). .)

  The power supply unit 22 converts the voltage of the battery 45 and supplies it to the microcomputer 21. The interface 23 is connected to a start switch 42 that starts the operation of the microcomputer 21.

  In the present embodiment, the microcomputer 21 is used as the control unit, but a GDC (Graphics Display Controller) may be used instead of the microcomputer 21. Further, a CAN (Control Area Network) may be connected to the interface 28 instead of the meter 41.

  FIG. 2A is a diagram illustrating an installation state of the HUD main body 10 in the vehicle interior, and FIG. 2B is a diagram illustrating an appearance of the HUD main body 10. As shown in FIGS. 2A and 2B, the HUD main body 10 has a shape that can be embedded in the dashboard 53. The HUD main body 10 is installed at a position where the combiner 11 and the windshield 51 can be visually recognized with the handle held by the user.

  FIG. 3 is a diagram illustrating an appearance of the button operation unit 35. FIG. 3A shows a case where the button operation unit 35 has a vertically long shape. As described above, the button operation unit 35 is installed in the vicinity of the meter 41 of the dashboard 53 (see FIG. 6). On the left side of the button operation unit 35, an indicator 27 that is a scale display with a plurality of LEDs arranged in a line in the vertical direction is arranged. Then, an LED indicating the current stop position lights up as a bar display. An adjustment switch 24 and a start switch 25 are arranged vertically from the center to the right side of the button operation unit 35.

  FIG. 3B shows a case where the button operation unit 35 has a horizontally long shape. As in the case of the portrait orientation, on the left side of the button operation unit 35, an indicator 27 for displaying a scale with a plurality of LEDs arranged in a line in the longitudinal direction is arranged. An adjustment switch 24 and a start switch 25 are arranged side by side on the right side from the center of the button operation unit 35.

  FIG. 4 is a diagram for explaining a display image displayed on the combiner 11. The combiner 11 reflects the display image projected by the display unit 12 to form a display area 11a (display area). The user visually recognizes the display area 11a (display area) formed on the combiner 11 and grasps information included in the display image. The position of the display area 11 a in the combiner 11 changes in the vertical direction according to the display adjustment angle of the combiner 11.

  FIG. 4A shows a display image displayed on the combiner 11 at an appropriate position. Near the center (second region) in the display area 11a of the combiner 11 is displayed a speedometer 11d that expresses the traveling speed of the vehicle (vehicle speed, 100 km / h in FIG. 4A) as a numerical value. Yes. A mark 11h indicating that the ACC (Adaptive Cruise Control) function is being used is displayed below the speedometer 11d.

  FIG. 4B shows a display image in the adjustment mode (simple display) that is a mode for adjusting the display adjustment angle of the combiner 11. In the adjustment mode, the angle information indicating the current display adjustment angle of the combiner 11 (the position of the display area 11a in the combiner 11) is scaled by the adjustment range 11b that is a scale and the bar 11c that indicates a part of the adjustment range 11b. Is displayed. The angle information is displayed in the left area (first area) in the display area 11a (display area) to the full width in the vertical direction in the display area 11a. In this embodiment, the bar 11c is longer than the other parts in the scale and is highlighted by making it a solid display. For example, the adjustment range 11 b is set so that the upper end and the lower end of the scale correspond to the upper end and the lower end in the rotatable range of the combiner 11. Although not shown, the scale of the adjustment range 11b is displayed darkly from the lower end to the bar 11c. Further, near the upper and lower ends of the scale of the adjustment range 11b, as a guide for improving operability, the letters “UP” with an upper triangle arrow corresponding to the display of the operation switch (adjustment switch 24), and the lower "DOWN" is displayed with a triangle arrow

  Thus, in the present embodiment, the length of the first area for displaying angle information in the vertical direction, which is the direction in which the display area 11a moves when the combiner 11 is rotated in the display area 11a, It is longer than the length of the area for displaying other information (information other than angle information).

  Further, near the center (second area) in the display area 11a, a speedometer 11d that displays the vehicle traveling speed (vehicle speed, 48 km / h in FIG. 4B) by a numerical value is displayed. As will be described later, in the second area, when the vehicle is running, a numerical value indicating the current vehicle speed is displayed (simple display), and when the vehicle is stopped, or the operation switch When an input is detected, a numerical value indicating angle information indicating the current display adjustment angle of the combiner 11 is displayed for a predetermined time (detailed display).

  FIG. 4C shows a display image in a state where the display area 11a is shifted downward and a part thereof is missing. This is the display when the display adjustment angle of the combiner 11 is not adjusted properly. As indicated by the dotted line frame j, the mark 11h indicating that the vehicle is running and the characters indicating “DOWN” with the lower triangle arrow in the lower part of the display image are partially missing.

  The operation of the HUD device 1 having the above configuration will be described. FIG. 5 is a flowchart showing an operation procedure of the HUD device 1. This operation program is stored in the ROM in the microcomputer 21 and is executed by the CPU in the microcomputer 21.

  The microcomputer 21 is activated when the activation switch 42 is pressed, and waits for completion of the activation operation of the combiner-type HUD device 1 (step S1). The starting operation of the HUD device 1 is, for example, an operation in which the combiner 11 moves from the storage position to the protruding position. When the activation of the HUD device 1 is completed, the microcomputer 21 causes the display unit 12 to display a demonstration screen for confirming the current display adjustment angle of the combiner 11 for a predetermined time, and then displays the speedometer 11d as speed information. It is displayed (step S2). The demonstration screen is, for example, a display that lights up the entire display area 11a. On the demonstration screen, for example, an automobile manufacturer name or an arbitrary illustration can be displayed.

  Subsequently, the microcomputer 21 determines whether or not there is a start operation input received from the start switch 25 (step S3). When it is determined that the start operation input has not been received, the microcomputer 21 performs a normal display (see FIG. 4A) (step S12). After executing step S12, the microcomputer 21 executes the process of step S3 again. That is, in the present embodiment, when the microcomputer 21 serving as the input unit receives a start input signal, processing after step S4 described later is executed, and angle information is displayed in the display area 11a.

  On the other hand, if it is determined in step S3 that the start operation input has been received, the microcomputer 21 determines that the adjustment mode for adjusting the display adjustment angle of the combiner 11 has been selected, and the display in the meter 41 indicates that the adjustment mode has been selected. Notification is made on the (display) (step S4). FIG. 6 is a diagram showing an adjustment mode notification screen 61 displayed on a display in the meter 41 installed on the dashboard 53. In the present embodiment, characters “HUD adjustment mode” are displayed on the notification screen 61.

  Subsequently, the microcomputer 21 determines whether or not the vehicle is traveling based on the speed signal received from the meter 41 via the interface 28 (step S5). More specifically, the microcomputer 21 determines whether or not the current vehicle speed is equal to or higher than a predetermined threshold (for example, 2 km / h). If it is determined that the vehicle is traveling, the microcomputer 21 simply displays the angle information (step S6). On the other hand, when it is determined that the vehicle is not traveling (stopped), the microcomputer 21 displays the angle information in detail (step S7).

  Simple display and detailed display will be described. FIG. 7 is a diagram showing a display image in the display area 11a of the combiner 11 in the adjustment mode. FIG. 7A shows a simplified display of angle information. In the case of the simple display, in addition to the display of the vehicle speed in the second region at the normal time shown in FIG. 4 (A), as shown in FIG. 7 (A) (FIG. 4 (B)), the first Angle information is displayed in this area.

  Second region FIG. 7B shows a detailed display of angle information. In the case of the detailed display, the characters “UP” with the upper triangle arrow and “DOWN” with the lower triangle arrow that are guides are displayed larger than in the case of the simple display shown in FIG. . Further, when the start switch 25 is pressed, the range surrounding the characters “UP” and “DOWN” is turned on. In the case of simple display, the current stop position is displayed as a numerical value near the center (second area) in the display area 11a where the vehicle speed is displayed as the speedometer 11d. In FIG. 7B, in the second region, the current rotational position in the rotatable range of the combiner 11 is indicated by a ratio by a numerical value (here, “48”) in the range of 0 to 100. . That is, when the combiner 11 is positioned at the lower limit position in the rotatable range, “0” is set, and when the combiner 11 is positioned at the upper limit position is set to “100”, the current display adjustment angle of the combiner 11 is displayed. Is displayed.

  Subsequently, the microcomputer 21 drives the motor 16 according to the adjustment operation input received from the adjustment switch 24, and changes the display adjustment angle of the combiner 11 (step S8). More specifically, when the adjustment switch 24 on the UP side is pressed, the microcomputer 21 controls the motor 16 so that the display area 11a on the combiner 11 moves downward by a predetermined amount, and on the DOWN side. When the adjustment switch 24 is pressed, the motor 16 is controlled so that the display area 11a on the combiner 11 moves upward by a predetermined amount. That is, the combiner 11 is rotationally driven according to the adjustment operation input of the adjustment switch 24.

  Subsequently, the microcomputer 21 determines whether or not the combiner 11 detected by the sensor unit 31 has reached the vicinity of the upper limit position or the lower limit position of the rotatable range (step S9). More specifically, the microcomputer 21 determines that the combiner 11 can rotate when the display adjustment angle from the current stop position to the upper limit position or the lower limit position is equal to or less than a predetermined threshold (for example, 0.5 °). It is determined that the vicinity of the upper limit position or the vicinity of the lower limit position has been reached. As a result of the determination, if it is determined that it has not reached, the microcomputer 21 proceeds to the process of step S11 as it is.

  On the other hand, when reaching the vicinity of the upper limit position or the vicinity of the lower limit position, the microcomputer 21 notifies the notification screen 61 in the meter 41 that the limit point of the adjustment range has been reached (step S10). That is, the meter 41 also functions as an alarm output unit that outputs an alarm. In addition, in the case of a HUD device equipped with a speaker, notification may be given by voice instead of notification by display in the notification screen 61. In this case, the speaker functions as an alarm output unit.

  Subsequently, the microcomputer 21 determines whether or not a predetermined time (for example, 5 seconds) has elapsed since the completion of the adjustment operation, that is, after the adjustment switch 24 is not operated (step S11). If the predetermined time has not elapsed, the microcomputer 21 returns to the process of step S8. On the other hand, when the predetermined time has elapsed, the microcomputer 21 performs normal display in step S12.

  Through the series of processes described above, when the start switch 25 is pressed, the HUD device 1 transitions to the adjustment mode and displays angle information indicating the current display adjustment angle of the combiner 11 in the display area 11a. Thereby, the user can grasp | ascertain the present display adjustment angle of a combiner from the angle information displayed on the 1st area | region, when adjusting the display adjustment angle of the combiner 11 visually recognizing the combiner 11. FIG. In the second display area of the display area 11a, a numerical value indicating the current vehicle speed is displayed when the vehicle is running (simple display), and the current value of the combiner 11 is displayed when the vehicle is stopped. A numerical value indicating angle information indicating the display adjustment angle is displayed (detailed display). Thus, the vehicle speed and the angle information are switched and displayed in the second area.

(Second Embodiment)
In the first embodiment, an example is shown in which the angle information is displayed in the display area 11a of the combiner 11 when transitioning to the adjustment mode. However, in the second embodiment, the display adjustment angle of the combiner 11 is displayed. Shows an example in which angle information is displayed in the display area 11a when reaches the vicinity of the limit point of the rotatable range.

  Since the basic configuration of the HUD device 1 of the second embodiment is the same as that of the first embodiment described above, the same components are denoted by the same reference numerals and description thereof is omitted.

  FIG. 8 is a flowchart showing an operation procedure of the HUD device 1 in the second embodiment. About the same step process as 1st Embodiment mentioned above, the same step number may be attached | subjected and description may be abbreviate | omitted.

  After notifying that the adjustment mode has been selected on the display in the meter 41 (step S4), the microcomputer 21 changes the display adjustment angle of the combiner 11 in accordance with the adjustment operation input received from the adjustment switch 24 (step S8). .

  Subsequently, the microcomputer 21 determines whether or not the combiner 11 detected by the sensor unit 31 has reached the vicinity of the upper limit position or the lower limit position of the rotatable range (step S9). As a result of the determination, if it is determined that it has not reached, the microcomputer 21 proceeds directly to the process of step S12.

  On the other hand, if it is determined that the vicinity of the upper limit position or the lower limit position (limit point) has been reached, the microcomputer 21 simply displays the angle information in the display area 11a of the combiner 11 (step S10A).

  FIG. 9 is a diagram showing a display image in the display area 11a of the combiner 11 when the vicinity of the limit point of the adjustable range (near the upper limit position) is reached. The bar 11c is located at the upper end of the scale of the adjustment range 11b.

  Thereafter, the microcomputer 21 determines whether or not a predetermined time has elapsed since the completion of the adjustment operation (step S11A). If the predetermined time has not elapsed, the microcomputer 21 returns to the process of step S8. On the other hand, when the predetermined time has elapsed, the microcomputer 21 performs normal display in step S12.

  According to the HUD device 1 of the second embodiment, an alarm is output when the display adjustment angle of the combiner 11 approaches the limit point. Therefore, the user is aware that the display adjustment angle of the combiner 11 has approached the limit point. Is easy to notice. Further, since the angle information is displayed only when the display adjustment angle of the combiner 11 approaches the limit point, the display area 11a can be widely used even while the display adjustment angle is being adjusted.

  Below, the effect | action and effect of the HUD apparatus 1 which concern on embodiment are demonstrated.

The HUD device 1 according to the embodiment is in accordance with a microcomputer 21 (input unit) that receives an adjustment input signal among various input signals, a display unit 12 (projection unit) that projects a display image including various information, and an adjustment input signal. A combiner 11 that is driven to rotate and reflects a display image projected from the display unit 12 to form a display area 11a (display area) is used by being mounted on a vehicle. The display area 11a includes a first area for displaying angle information indicating the current display adjustment angle (rotation angle) of the combiner 11.
For this reason, when adjusting the display adjustment angle of the combiner 11 while visually recognizing the combiner 11, the user can grasp the current display adjustment angle of the combiner 11 from the angle information displayed in the first area. Thereby, even if the combiner 11 stops at the limit point of the rotatable range and becomes unable to rotate, the user can recognize that it is not in failure. Further, it is possible to prevent the combiner 11 from vibrating or generating abnormal noise due to the continued operation for rotating the combiner 11 in the limit point direction.
Therefore, according to the HUD device 1 according to the embodiment, it is possible to provide a HUD device with improved operability in the display position adjustment operation.

In the HUD device 1 according to the embodiment, when the microcomputer 21 further receives a start input signal and the microcomputer 21 receives the start input signal, the angle information is displayed in the first area.
Thereby, since the angle information is not displayed when the user is in an adjustment mode other than the adjustment mode for adjusting the display position, unnecessary information can be prevented from being displayed in the display area 11a.

Further, in the HUD device 1 according to the second embodiment, the combiner 11 is rotatable between the lower limit position and the upper limit position (rotatable range), and the combiner 11 is in the vicinity of the lower limit position or the upper limit position. If it is located in the vicinity, the angle information is displayed in the first area.
According to this configuration, since the angle information is displayed only when the combiner 11 reaches the vicinity of the limit point of the rotatable range, it is possible to avoid displaying unnecessary information in the display area 11a. For example, other information can be displayed in the display area 11a during the adjustment of the display position, and the display area can be widely used.

Further, in the HUD device 1 according to the embodiment, the angle information is displayed in the first area by the scale display.
For this reason, the user can grasp the display adjustment angle of the combiner 11 intuitively. Further, since the angle information is presented by a scale display, the user can grasp how much the current display adjustment angle corresponds to within the rotatable range. In addition, the user can easily grasp that the current display adjustment angle is approaching the limit point of the rotatable range.

The HUD device 1 according to the first embodiment further includes an alarm output unit that can output an alarm. Moreover, the combiner 11 can rotate between a lower limit position and an upper limit position. The alarm output unit outputs an alarm when the combiner 11 reaches the vicinity of the lower limit position or the vicinity of the upper limit position.
According to this configuration, since the alarm is output when the display adjustment angle of the combiner 11 approaches the limit point, the user can easily notice that the display adjustment angle of the combiner 11 has approached the limit point.

In the HUD device 1 according to the first embodiment, the display area 11a further includes a second area for displaying numerical values, and the angle information displayed in the first area is displayed in the second area. Is displayed (detailed display).
According to this configuration, since the angle information is also displayed as a numerical value, the user can accurately and immediately grasp the current display adjustment angle of the combiner 11.

The HUD device 1 according to the first embodiment further includes an interface 28 (reception unit) that receives a speed signal representing the current traveling speed of the vehicle. When it can be considered that the vehicle is traveling, a numerical value indicating the traveling speed of the vehicle is displayed in the second area, and when it can be regarded that the vehicle is stopped, the second area A numerical value representing angle information is displayed on the screen.
According to this configuration, since the traveling speed of the vehicle and the angle information are switched and displayed in the second area, the display area (second area) can be used effectively.

Further, in the HUD device 1 according to the embodiment, the length of the first area that displays angle information in the vertical direction, which is the direction in which the display area 11a moves when the combiner 11 is rotated in the display area 11a. However, it is longer than the length of the area where information other than the angle information is displayed.
For this reason, the user adjusts the display position so that the entire display image is displayed on the combiner 11 by performing an adjustment operation so that the entire first display area is displayed on the combiner 11. Can do. That is, when the adjustment operation is executed, the adjustment operation can be executed based on only the first display area without considering the display contents in the other display areas, so that the burden on the user for the adjustment operation can be reduced. .

  The technical scope of the present invention is not limited to the embodiment described above. The above-described embodiments can be accompanied by various modifications and improvements within the technical scope of the present invention.

  For example, in the HUD device 1 according to the embodiment, the angle information is configured to be displayed in the first area when the microcomputer 21 receives the start input signal, but is configured to be always displayed in the first area. It doesn't matter.

  In the HUD device 1 according to the embodiment, the angle information is displayed in the first area by the scale display. However, the angle information may be displayed by other display modes. For example, a numerical display may be used.

  In the HUD device 1 according to the embodiment, in the second area, when the vehicle is traveling, a numerical value representing the traveling speed of the vehicle is displayed. When the vehicle is stopped, the second area Although the numerical value indicating the angle information is displayed, the numerical value indicating either the traveling speed or the angle information may be displayed regardless of the traveling state of the vehicle. In particular, when a numerical value representing angle information is displayed, it is conceivable to use a design that is not similar to the display of the traveling speed, and display that is not erroneously recognized as the traveling speed.

  In the HUD device 1 according to the embodiment, the example in which the scale display displayed in the first region is used for displaying angle information has been described. However, the scale display is used for displaying information other than the angle information, for example, The remaining distance to the intersection, a FUEL (fuel) gauge, an eco indicator, etc. may be used for display. In this way, the display area can be effectively used by combining the scale display with other displays. In addition, since it is possible to save the trouble of creating a scale display design for each display element, the product cost can be reduced.

  Further, a message for prompting the user to adjust the display adjustment angle of the combiner 11 may be displayed on the display (display) in the meter 41 during the process of step S1 in FIG. For example, if the text “Adjust before driving so that there is no missing display” is displayed, the user can be prompted to adjust the display position. At this time, if the characters “Adjust so that all bars for adjustment are displayed” are displayed together, an operation that the entire display image is displayed on the combiner 11 is used. Can be encouraged.

In the embodiment, the example applied to the combiner-type HUD device 1 has been described. However, each configuration described in the embodiment is shown in FIG. 10 (prior art document: FIG. 1 of Japanese Patent Laid-Open No. 2008-40091), for example. As illustrated, a display image projected from the projection unit is reflected by a reflecting mirror, and the reflected image of the reflecting mirror is projected onto a windshield (windshield), thereby providing a display region ( You may apply to the HUD apparatus of the structure which displays information on the area | region E) in FIG. In addition, each code | symbol in FIG. 10 is a reference code in the said literature, and does not respond | correspond with the thing of this application.
That is, an input unit (for example, the microcomputer 21) that receives an adjustment input signal among various input signals, a projection unit (for example, the display unit 12) that projects a display image including various types of information, and the adjustment input signal. A reflection plate (reflecting mirror) that is driven to rotate and reflects the display image projected by the projection unit and guides the display image to a display surface (front glass, windshield), and the display image on the display area of the display surface The display area may include a first area that displays angle information indicating a display adjustment angle of the reflector. In addition, the configuration of the above-described embodiment can be applied as it is to other display modes.
With such a configuration, as in the case of the combiner type, when changing the display adjustment angle of the reflector and adjusting the display position, the user can use the reflector from the angle information displayed in the first area. The current display adjustment angle can be grasped. Thereby, even if the reflector stops at the limit point of the rotatable range and becomes unable to rotate, the user can recognize that it is not in failure.

DESCRIPTION OF SYMBOLS 1 Head-up display (HUD) apparatus 10 HUD main body 11 Combiner 11a Display area (display range)
11b Adjustment range 11c Bar 11d Speedometer 12 Display unit (projection unit)
16 Motor 17 Mechanism part 18, 19 Proximity switch 21 Microcomputer (input part)
24 Adjustment switch 25 Start switch 28 Interface (receiver)
31 Sensor part 35 Button operation part 41 Meter (alarm output part)
51 Windshield 53 Dashboard

Claims (4)

An input unit for receiving an adjustment input signal among various input signals;
A projection unit that projects a display image including various types of information;
A combiner that is rotationally driven according to the adjustment input signal and reflects the display image projected from the projection unit to form a display area;
Comprising a head-up display device mounted on a vehicle and used.
The display area includes a first area that displays angle information representing a current display adjustment angle of the combiner as a part of the display image,
The input unit further accepts a start input signal;
When the input unit receives the start input signal, transition to the adjustment mode, only during the period of the adjustment mode, the angle information is displayed in the first region ,
The angle information is displayed in the first area by a scale display by an adjustment range that is a scale and a bar that indicates a part of the adjustment range.
A head-up display device. An input unit for receiving an adjustment input signal among various input signals;
A projection unit that projects a display image including various types of information;
A combiner that is rotationally driven according to the adjustment input signal and reflects the display image projected from the projection unit to form a display area;
Comprising a head-up display device mounted on a vehicle and used.
The display area includes a first area that displays angle information representing a current display adjustment angle of the combiner as a part of the display image,
The display area further includes a second area for displaying a numerical value as a part of the display image, and when the current speed of the vehicle is equal to or greater than a predetermined threshold, A numerical value representing the current speed is displayed, and when the current speed of the vehicle is less than the predetermined threshold, a numerical value representing the angle information displayed in the first area is displayed.
A head-up display device. Further provided with an alarm output unit capable of outputting an alarm,
The combiner is rotatable between a lower limit position and an upper limit position;
The warning output unit outputs the warning when the combiner reaches the vicinity of the lower limit position or the upper limit position.
The head-up display device according to claim 1 , wherein the head-up display device is a head-up display device. An input unit for receiving an adjustment input signal among various input signals;
A projection unit that projects a display image including various types of information;
A reflection plate that is driven to rotate according to the adjustment input signal and reflects the display image projected by the projection unit to guide the display image;
A head-up display device in which the display image is displayed in a display area on the display surface,
The display area includes a first area for displaying angle information representing a position of the current display adjustment angle of the reflector in the adjustable range of the display adjustment angle of the reflector as a part of the display image. ,
The angle information is displayed in the first area by a scale display by an adjustment range that is a scale and a bar that indicates a part of the adjustment range.
A head-up display device.

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