JP2017124770A - Vehicular display device and control method for vehicular display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular display device that enables a driver to more surely recognize an intersection where the diver turns to the right and left.SOLUTION: A right light emitting portion 23R (a left light emitting portion 23L) is arranged at a right side (a left side) adjacent to a combiner 22 that a head-up display device 20 has. A right rear display portion 30R (a left rear display portion 30L) is arranged at a right side (a left side) of the combiner 22, away from the combiner 22. A light emitting control portion 13, when advancing-direction information shows right-turn (left-turn) and information on a distance from a current position of a vehicle to an intersection where a driver turns to the right or to the left shows that the distance is less than a prescribed distance, controls the right light emitting portion 23R (the left light emitting portion 23L) so that light is emitted at prescribed time intervals. A display control portion 15 controls the right rear display portion 30R (the left rear display portion 30L) so that the portion displays an attention image for attracting attention of a driver after prescribed delay time has elapsed since the right light emitting portion 23R (the left light emitting portion 23L) emitted light.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device for a vehicle including a head-up display device and a control method for the display device for a vehicle.

  2. Description of the Related Art In recent years, a head-up display device that projects a projection light from a projection unit onto a combiner configured by a half mirror and displays a predetermined image is becoming widespread. The driver recognizes a virtual image formed at a position ahead of the combiner in the traveling direction of the vehicle as a display image. The display image is information necessary at the time of driving such as an image indicating the traveling speed when the vehicle speed or route guidance is performed.

  Since the driver can visually recognize the display image superimposed on the scenery in front of the vehicle, the driver recognizes a display image such as an image showing the vehicle speed and the traveling direction without moving the line of sight while driving the vehicle. Can do.

JP 2014-75079 A

  During route guidance, a head-up display device generally displays a right arrow if the direction of travel at the intersection is a right turn, and a left arrow if the direction of travel at the intersection is a left turn. It is.

  The driver can recognize the intersection that turns right and left by the arrow displayed by the head-up display device. However, if you are concentrating on driving, you may not be aware of the arrow, and you will be required to make the driver recognize the intersection that turns right and left more reliably.

  An object of the present invention is to provide a display device for a vehicle and a control method for the display device for a vehicle that can make a driver recognize an intersection that turns right and left more reliably.

  In order to solve the above-described problems of the related art, the present invention provides a head-up display device having a combiner for presenting a virtual image in front of a driver of a vehicle with light indicating a predetermined image projected by a projection unit. A right light emitting unit and a left light emitting unit arranged on the right side and the left side of the combiner adjacent to the combiner, and a right side display arranged on the right side and the left side of the combiner apart from the combiner. And a left display, travel direction information indicating whether to make a right turn or a left turn at an intersection when the vehicle is route-guided, and distance information from the current position of the vehicle to an intersection that makes a right or left turn The traveling direction / distance information acquisition unit that performs and the traveling direction information acquired by the traveling direction / distance information acquisition unit indicate a right turn, and the distance information The traveling direction information acquired by the traveling direction / distance information acquisition unit by controlling the light emission of the right light emitting unit so that the right light emitting unit emits light at a predetermined time interval when indicating that the distance is less than a predetermined distance. Indicates a left turn, and when the distance information indicates that it is less than the predetermined distance, a light emission control unit that controls light emission of the left light emitting unit so that the left light emitting unit emits light at the predetermined time interval; When the traveling direction information acquired by the distance information acquisition unit indicates a right turn and the distance information indicates that the distance is less than the predetermined distance, the light emission from the right light emitting unit is shorter than the predetermined time interval. After a predetermined delay time, which is a time, control is performed to display a caution image for attracting the driver's attention on the right display unit, and the traveling direction information acquired by the traveling direction / distance information acquiring unit is left-turned. The When the distance information indicates that the distance is less than the predetermined distance, display control is performed to control the left display unit to display the attention image after the predetermined delay time from the light emission of the left light emitting unit. And a vehicle display device.

  In addition, in order to solve the above-described problems of the conventional technology, the present invention provides a traveling direction information indicating whether to make a right turn or a left turn at an intersection when the vehicle is being routed, and a right turn or a right turn from the current position of the vehicle. The distance information to the intersection to turn left is acquired, and when the traveling direction information indicates a right turn and the distance information indicates that it is less than a predetermined distance, the light of the driver of the vehicle is projected by the light projected by the projection unit A right light emitting unit disposed on the right side of the combiner adjacent to a combiner for presenting a virtual image in front is controlled to emit light at a predetermined time interval, the traveling direction information indicates a right turn, and the distance information is When indicating that the distance is less than the predetermined distance, the light emitting unit is separated from the combiner after a predetermined delay time which is shorter than the predetermined time interval from the light emission of the right light emitting unit. Control to display a caution image for attracting the driver's attention on the right display unit arranged on the right side of the combiner, the traveling direction information indicates a left turn, and the distance information is less than the predetermined distance. The left light emitting unit disposed on the left side of the combiner adjacent to the combiner is controlled to emit light at the predetermined time interval, the traveling direction information indicates a left turn, and the distance information Indicates that the distance is less than the predetermined distance, the left display unit disposed on the left side of the combiner is separated from the combiner after the predetermined delay time from the light emission of the left light emitting unit. Provided is a control method for a display device for a vehicle, wherein the control is performed so as to display an image.

  According to the display device for a vehicle and the control method for the display device for a vehicle of the present invention, it is possible to make the driver more surely recognize an intersection that makes a right or left turn.

It is a block diagram which shows the display apparatus for vehicles of one Embodiment. It is a top view which shows roughly the state where the driver looked ahead of vehicles. It is a top view which shows the 1st structural example of the right light emission part provided adjacent to the combiner, and the left light emission part. It is a fragmentary perspective view of the 1st example of composition. It is a fragmentary perspective view which shows the 2nd structural example of the right light emission part provided adjacent to the combiner, and the left light emission part. It is a side view of the 2nd example of composition. FIG. 3 is a diagram for explaining Example 1; It is a figure which shows the correspondence of the distance of the own vehicle and an intersection, the luminescent color, and the display color which are set in Example 1. FIG. FIG. 6 is a diagram for explaining the operation of the first embodiment. It is a flowchart which shows the operation | movement of the display apparatus for vehicles by Example 1, and the control method of the display apparatus for vehicles. FIG. 6 is a diagram for explaining a second embodiment. It is a figure which shows the correspondence of the distance of the own vehicle and an intersection, and delay time which are set in Example 1. FIG. It is a flowchart which shows the operation | movement of the display apparatus for vehicles by Example 2, and the control method of the display apparatus for vehicles. FIG. 10 is a diagram for explaining Example 3;

  Hereinafter, a display device for a vehicle and a control method for the display device for a vehicle according to an embodiment will be described with reference to the accompanying drawings.

  In FIG. 1, the vehicle display device 100 includes a control unit 10 that controls each unit in the vehicle display device 100. The control unit 10 includes a projection image generation unit 11, a projection control unit 12, a light emission control unit 13, a traveling direction / distance information acquisition unit 14, a display control unit 15, and a photographing control unit 16.

  The control unit 10 is, for example, a microprocessor or a microcomputer, and can be configured by an arbitrary computing device. When the control unit 10 is configured by a computing device, the projection image generation unit 11 to the imaging control unit 16 can be configured by software modules. The projection image generation unit 11 to the imaging control unit 16 may be configured by hardware such as an integrated circuit. Use of hardware and software is optional.

  In FIG. 1, the control unit 10 is described as one computing device. However, the control unit 10 is configured by a plurality of computing devices so that the plurality of computing devices cooperate with each other. It may be configured.

  The vehicle display device 100 includes a head-up display device (hereinafter referred to as a HUD device) 20. The HUD device 20 includes a projection unit 21, a combiner 22, and a light emitting unit 23. A portion including the projection image generation unit 11, the projection control unit 12, the light emission control unit 13, the projection unit 21, the combiner 22, and the light emission unit 23 constitutes the HUD device 20.

  The projection unit 21 projects light indicating a predetermined image onto the combiner 22 using, for example, a liquid crystal panel. The projection unit 21 may project light indicating a predetermined image onto the combiner 22 by a laser scanner, and the configuration of the projection unit 21 is arbitrary.

  The combiner 22 is constituted by a half mirror 220 (shown in FIGS. 3 to 6) formed in a concave shape when viewed from the driver. The combiner 22 presents a virtual image in front of the driver. As will be described later, a right light-emitting portion 23R and a left light-emitting portion 23L are provided adjacent to the combiner 22 on the right and left sides of the combiner 22, respectively.

  HUD display data corresponding to an image to be displayed by the HUD device 20 is supplied to the projection image generation unit 11 from a CAN (Controller Area Network) 40 mounted on the vehicle. The CAN 40 is a network that connects a plurality of electronic control units (ECUs) that control each part of the vehicle.

  The HUD display data supplied from the CAN 40 is data indicating the vehicle speed, for example.

  HUD display data corresponding to an image displayed by the HUD device 20 is supplied to the projection image generation unit 11 from the navigation device 50 mounted on the vehicle. The HUD display data supplied from the navigation device 50 is, for example, data indicating a traveling direction when the navigation device 50 sets a destination and provides route guidance.

  Only one of the HUD display data generated by the CAN 40 and the HUD display data generated by the navigation device 50 may be supplied to the projection image generation unit 11.

  The projection image generation unit 11 generates image data representing the input HUD display data and supplies it to the projection control unit 12. The projection control unit 12 controls the projection unit 21 to project light indicating an image corresponding to the input image data.

  When the navigation device 50 guides the route of the vehicle, the traveling direction / distance information acquisition unit 14 determines whether to go straight or turn right or left at the intersection, and from the current position of the vehicle, go straight or right or Distance information to the intersection to turn left is supplied. The traveling direction information may indicate at least whether to make a right turn or a left turn.

  The traveling direction information and the distance information acquired by the traveling direction / distance information acquisition unit 14 are supplied to the light emission control unit 13. The light emission control unit 13 controls light emission by the light emitting unit 23 according to the input traveling direction information and distance information. How the light emission control unit 13 specifically controls the light emission by the right light emission unit 23R or the left light emission unit 23L will be described in detail later.

  The vehicle includes a right rear camera 70R for photographing the right rear and a left rear camera 70L for photographing the left rear. The imaging control unit 16 controls the right rear camera 70R and the left rear camera 70L. The photographing control unit 16 may control photographing conditions such as a shutter speed and a diaphragm when the right rear camera 70R and the left rear camera 70L photograph right rear and left rear, respectively.

  Captured image data obtained by the right rear camera 70R and the left rear camera 70L photographing the right rear and the left rear is supplied to the photographing control unit 16, respectively. The imaging control unit 16 supplies the input captured image data to the display control unit 15.

  The vehicle display device 100 includes a right rear display unit 30R and a left rear display unit 30L. The right rear display unit 30R and the left rear display unit 30L are collectively referred to as the rear display unit 30. The right rear display unit 30R and the left rear display unit 30L are examples of a right display unit and a left display unit.

  The display control unit 15 controls the right rear display unit 30R to display an image based on the photographed image data obtained by photographing the right rear on the right rear display unit 30R, and displays an image based on the photographed image data obtained by photographing the left rear. The left rear display unit 30L is controlled to display on the display unit 30L.

  The traveling direction information and the distance information acquired by the traveling direction / distance information acquiring unit 14 are also supplied to the display control unit 15. The display control unit 15 is an image different from the image based on the captured image data according to the input traveling direction information and distance information, and displays a caution image for attracting the driver's attention on the right rear display unit 30R or The right rear display unit 30R or the left rear display unit 30L is controlled to display on the left rear display unit 30L.

  How the display control unit 15 specifically controls the display of the attention image by the right rear display unit 30R or the left rear display unit 30L will be described in detail later.

  The right rear display unit 30R and the left rear display unit 30L are composed of, for example, a liquid crystal panel. The right rear display unit 30R and the left rear display unit 30L may be arbitrary display devices.

  FIG. 2 schematically shows a state where the driver looks at the front of the vehicle. As shown in FIG. 2, the projection unit 21 is mounted in the dashboard 202 on the front side of the steering wheel 201. The combiner 22 is mounted on the dashboard 202 so that the center in the left-right direction coincides with the center in the left-right direction of the steering wheel 201.

  The right rear display unit 30R and the left rear display unit 30L are arranged separately from the combiner 22 so as to be on the right side and the left side of the driver, respectively. The right rear display unit 30R and the left rear display unit 30L are attached to the dashboard 202 so as to sandwich the steering wheel 201. The right rear display unit 30R and the left rear display unit 30L may be arranged so as to sandwich an instrument such as a speedometer.

  A configuration example of the right light emitting unit 23R and the left light emitting unit 23L will be described with reference to FIGS. 3 and 4 show a first configuration example, and FIGS. 5 and 6 show a second configuration example.

  As shown in FIG. 3, the combiner 22 includes a half mirror 220, and a right light emitting unit 23 </ b> R and a left light emitting unit 23 </ b> L are provided so as to sandwich the half mirror 220. In the first configuration example, the right light emitting unit 23R and the left light emitting unit 23L are configured by a light guide unit. A boundary surface 231 is formed between the half mirror 220 and the right light emitting unit 23R and the left light emitting unit 23L.

  Light emitters 23RD and 23LD, which are light emitting diodes (LEDs), for example, are attached to the lower ends of the right light emitter 23R and the left light emitter 23L. The light emitters 23RD and 23LD are preferably light emitters that emit light of any color by combining red (R) light, green (G) light, and blue (B) light.

  As shown in FIG. 4, the back surfaces of the right light emitting unit 23R and the left light emitting unit 23L are reflective surfaces 232. When the light emitter 23RD or 23LD emits light, the light is reflected from the reflecting surface 232 and guided from the lower end portions of the right light emitting portion 23R and the left light emitting portion 23L to the upper end portions as indicated by the dashed line arrows in FIG. Thus, the whole of the right light emitting unit 23R and the left light emitting unit 23L emits light.

  The light emitters 23RD and 23LD may not be embedded in the right light emitter 23R and the left light emitter 23L. The light emitters 23RD and 23LD may be attached to the upper ends of the right light emitter 23R and the left light emitter 23L.

  In the second configuration example shown in FIG. 5, triangular prism-shaped concave portions 233 are formed in the vertical direction on the back surfaces of the right light emitting portion 23 </ b> R and the left light emitting portion 23 </ b> L. As shown in FIG. 6, light emitters 23RD and 23LD are disposed below the lower ends of the right light emitting unit 23R and the left light emitting unit 23L, respectively. In FIG. 6, the right light emitting unit 23R and the light emitter 23RD are not visible.

When the light emitter 23RD or 23LD emits light, part of the light is directed upward, and part of the light is reflected in the direction of the driver by the reflecting surface 234 inclined at 45 degrees of the respective recesses 233. Thereby, the concave portion 233 of the right light emitting portion 23R or the left light emitting portion 23L emits light.

  An aluminum vapor deposition layer or the like may be provided on the reflective surface 234 to increase the amount of reflected light.

  Although not shown, as a third configuration example of the right light emitting unit 23R and the left light emitting unit 23L, on the right side and the left side of the combiner 22, a plurality of LEDs whose light emission direction is the driver's direction are arranged vertically. Also good.

  Next, a specific control method of the light emission of the right light emission unit 23R or the left light emission unit 23L by the light emission control unit 13 and the display of the caution image of the right rear display unit 30R or the left rear display unit 30L by the display control unit 15 will be described. To do.

  Examples 1 to 3 will be described by taking as an example the case where the traveling direction information acquired by the traveling direction / distance information acquisition unit 14 indicates a right turn.

  FIG. 7A shows an example of a change in the distance to the intersection when the host vehicle approaches the intersection where the vehicle turns to the right with the passage of time. The horizontal axis represents time, and the vertical axis represents the distance to the intersection.

  In the first embodiment, the light emission control unit 13 and the display control unit 15 include the light emission color of the right light emission unit 23R or the left light emission unit 23L and the right rear display unit according to the distance to the intersection as shown in FIG. The display color of the caution image displayed by 30R or the left rear display unit 30L is set.

  As an example, the emission color and the display color are set to blue if the distance to the intersection is 20 m or more and less than 50 m, set to yellow if it is 5 m or more and less than 20 m, and set red if it is less than 5 m. Yes.

  Here, the distance between the host vehicle and the intersection is divided into three groups, but the number of groups may be two or four or more. The emission color and the display color are not limited to blue, yellow and red, but it is preferable that the longer the distance, the colder the color, and the shorter the distance, the warmer the color.

  The emission color and the display color need not be the same color, but are preferably the same color. Even when the same color is used, the color expressed by the light emitting unit 23 and the color expressed by the rear display unit 30 may not be exactly the same color. The same color should just be a color close | similar to the grade which a person can recognize as the same color.

  In FIG. 7A, the distance between the host vehicle and the intersection exceeds 50 m before time t1, and the distance becomes 50 m at time t1. Since the distance exceeds 50 m before time t1, the light emission control unit 13 does not cause the right light emission unit 23R to emit light, and the display control unit 15 does not cause the right rear display unit 30R to display a caution image.

  As shown in FIG. 7B, the light emission control unit 13 causes the right light emission unit 23R to emit blue light at intervals of 1.5 seconds, for example, as a single light emission time after time t1. Lb in FIG. 7B indicates blue light emission.

  The display control unit 15 causes the right rear display unit 30R to display a display time of 0.5 second and 1.5 second intervals after a delay time of, for example, 0.4 seconds from the blue light emission Lb after time t1. A blue caution image is displayed. In FIG. 7B, Ib indicates a blue attention image.

  The light emission control unit 13 and the display control unit 15 continue to display the blue light emission Lb and the blue attention image Ib with an interval of 0.4 seconds until the distance between the host vehicle and the intersection reaches 20 m.

  In FIG. 7A, the distance is 20 m at time t2. As shown in FIG. 7B, the light emission control unit 13 causes the right light emission unit 23R to emit yellow light at intervals of 1.5 seconds for 0.5 seconds as a single light emission time after time t2. Ly in FIG. 7B indicates yellow light emission.

  The display control unit 15 causes the right rear display unit 30R to display a display time of 0.5 second and an interval of 1.5 seconds after a delay time of 0.4 seconds from the yellow light emission Ly after time t2. Display a yellow caution image. In FIG. 7B, Iy indicates a yellow caution image.

  The light emission control unit 13 and the display control unit 15 continue to display the yellow light emission Ly and the yellow caution image Iy with an interval of 0.4 seconds until the distance between the host vehicle and the intersection becomes 5 m.

  In FIG. 7A, the distance is 5 m at time t3. As shown in FIG. 7B, the light emission control unit 13 causes the right light emitting unit 23R to emit red light at intervals of 1.5 seconds for 0.5 seconds as a single light emission time after time t3. Lr in FIG. 7B indicates red light emission.

  The display control unit 15 causes the right rear display unit 30R to display a display time of 0.5 second and an interval of 1.5 seconds after a delay time of 0.4 seconds from the red light emission Lr after time t3. A red caution image is displayed. Ir in FIG. 7B indicates a red caution image.

  The light emission control unit 13 and the display control unit 15 continue to display the red light emission Lr and the red caution image Ir with an interval of 0.4 seconds until time t4 when the distance between the host vehicle and the intersection becomes 0 m. Let The distance of 0 m between the host vehicle and the intersection means that the host vehicle has entered the intersection.

  After time t4, the light emission control unit 13 and the display control unit 15 stop the display of the red light emission Lr and the red attention image Ir.

  As described above, in the first embodiment, the light emission control unit 13 determines that the right light emission unit 23R is predetermined when the traveling direction information indicates a right turn and the distance information indicates less than a predetermined distance (for example, 50 m). The light emission of the right light emitting unit 23R is controlled so as to emit light periodically at a time interval of. In accordance with this, the display control unit 15 periodically displays a caution image on the right rear display unit 30R after a predetermined delay time that is shorter than a predetermined time interval from the light emission of the right light emitting unit 23R. Control as follows.

  Similarly, the light emission control unit 13 emits left light so that the left light emitting unit 23L periodically emits light at predetermined time intervals when the traveling direction information indicates a left turn and the distance information is less than a predetermined distance. The light emission of the unit 23L is controlled. In accordance with this, the display control unit 15 controls to periodically display a caution image on the left rear display unit 30L after a predetermined delay time from the light emission of the left light emission unit 23L.

  In the first embodiment, the light emission pattern of the right light emitting unit 23R and the display pattern of the attention image of the right rear display unit 30R, and the display pattern of the left light emission unit 23L light emission pattern and the left rear display unit 30L are The same regardless of the distance to the intersection. In the first embodiment, the emission color and the display color of the caution image are made different according to the distance between the host vehicle and the intersection.

  The state of the combiner 22 and the right rear display unit 30R when the light emission by the right light emitting unit 23R and the display of the caution image on the right rear display unit 30R are controlled as shown in FIG. Will be described in detail.

  As shown in FIG. 9, as an example, an image (character) 401 indicating the vehicle speed and an image 501 indicating the traveling direction when route guidance is displayed on the combiner 22.

  Here, if the distance between the host vehicle and the intersection is 20 m or more and less than 50 m, the light emission control unit 13 causes the right light emission unit 23R to emit blue light at a certain timing, as shown in FIG. .

  As shown in FIG. 9B, the display control unit 15 displays the blue attention image Ib on, for example, the left end of the right rear display unit 30R after 0.4 seconds have elapsed from the start of the blue light emission Lb. . Since the blue light emission Lb continues for 0.5 seconds, the display of the blue light emission Lb and the blue attention image Ib overlaps for 0.1 second.

  As shown in FIG. 9C, the light emission control unit 13 stops the blue light emission Lb after 0.5 seconds from the start of the blue light emission Lb, so that the blue caution image Ib for 0.4 seconds thereafter. Only displayed.

  Since the combiner 22 and the right rear display unit 30R repeat the operations of (a) to (c) in FIG. 9 at intervals of 1.5 seconds, it seems that the blue object moves from the combiner 22 to the right rear display unit 30R. Visible to. Therefore, the driver can recognize that he / she is approaching an intersection that turns right.

  In the first embodiment, since the emission color and the display color of the caution image change according to the distance between the host vehicle and the intersection, a rough distance can be recognized by the color. If the light emission color and the display color of the caution image are red, the driver can recognize that it is immediately before reaching the intersection that turns right (or left).

  The operation of the vehicle display device 100 and the control method of the vehicle display device 100 according to the first embodiment will be described with reference to the flowchart shown in FIG.

  In FIG. 10, when the process by the control unit 10 is started, the light emission control unit 13 and the display control unit 15 determine whether or not an intersection for turning right or left is within a predetermined distance in step S101. If it is not determined that the distance is within the predetermined distance (NO), the light emission control unit 13 and the display control unit 15 repeat the process of step S101. The predetermined distance here is the maximum distance to which the present technology is applied, and is 50 m in the first embodiment.

  If it is determined that the distance is within the predetermined distance (YES), in step S102, the light emission control unit 13 and the display control unit 15 determine whether or not the vehicle is passing the intersection where the vehicle turns right or left. If it is determined that the vehicle is passing the intersection (YES), the light emission control unit 13 and the display control unit 15 emit the right light emission unit 23R or the left light emission unit 23L and the right rear display unit in step S103. The display of the caution image by 30R or the left rear display unit 30L is stopped, and the process returns to step S101.

  If it is not determined that the vehicle is passing the intersection (NO), in step S104, the light emission control unit 13 and the display control unit 15 determine whether the distance to the intersection where the vehicle turns right or left is 20 m or more and less than 50 m. Determine. If it is determined that the distance is 20 m or more and less than 50 m (YES), the light emission control unit 13 and the display control unit 15 set the light emission color and the color of the caution image to blue in step S106.

  If it is not determined that the distance is 20 m or more and less than 50 m (NO), the light emission control unit 13 and the display control unit 15 determine in step S105 that the distance to the intersection that turns right or left is 5 m or more and less than 20 m. Determine whether or not. If it is determined that the distance is 5 m or more and less than 20 m (YES), the light emission control unit 13 and the display control unit 15 set the light emission color and the color of the caution image to yellow in step S107.

  If it is not determined that the distance is 5 m or more and less than 20 m (NO), the light emission control unit 13 and the display control unit 15 set the light emission color and the color of the caution image to red in step S108.

  In step S109, the light emission control unit 13 causes the right light emitting unit 23R to emit light in the color set in any of steps S106 to S108 if it is an intersection that makes a right turn, and the left light emitting unit 23L that makes an intersection that makes a left turn.

  In step S110, the display control unit 15 adds the right rear display unit 30R to the right rear display unit 30R if it is a right turn intersection after the set delay time, and the left rear display unit 30L to any one of steps S106 to S108. The caution image Ib of the set color is displayed, and the process returns to step S101.

  The light emission control unit 13 and the display control unit 15 repeat the processing of steps S101 to S110 at a set time interval. Note that if the vehicle does not turn right or left at the intersection determined in step S101 while the light emission and the caution image are displayed by the processing of steps S106 to S110, the light emission and the caution A process for stopping the display of the image is executed.

  FIG. 11A is the same as FIG. 7A. In Example 2, the light emission control unit 13 and the display control unit 15 display the right rear display after the right light emission unit 23R or the left light emission unit 23L emits light according to the distance to the intersection as shown in FIG. The delay time until the part 30R or the left rear display part 30L displays the attention image is set. The delay time may be set only in the display control unit 15.

  As an example, if the distance to the intersection is less than 50 m and 20 m or more, the delay time is set to 0.8 seconds, if it is less than 20 m and 5 m or more, the delay time is set to 0.4 seconds, and if it is less than 5 m The delay time is set to 0 seconds (no delay).

  Here, the distance between the host vehicle and the intersection is divided into three groups, but the number of groups may be two or four or more. The shorter the distance to the intersection, the better the delay time. The shortest delay time may not be 0 seconds.

  In FIG. 11A, since the distance exceeds 50 m before time t1, the light emission control unit 13 does not cause the right light emission unit 23R to emit light, and the display control unit 15 displays a caution image on the right rear display unit 30R. Do not display.

  As shown in FIG. 11B, after the time t1, the light emission control unit 13 emits the right light emission unit 23R with a predetermined color at intervals of 1.5 seconds, for example, for 0.5 seconds as one light emission time. Let

  The display control unit 15 causes the right rear display unit 30R to display 0.5 seconds and 1.5 seconds as a single display time after a delay time of 0.8 seconds from light emission of a predetermined color after time t1. Then, a caution image of a predetermined color is displayed.

  The emission color of the right light emitting unit 23R and the display color of the caution image displayed by the right rear display unit 30R may be different, but the same color is preferable.

  The light emission control unit 13 and the display control unit 15 continue to emit light of a predetermined color and display a caution image of a predetermined color with an interval of 0.8 seconds until the distance between the host vehicle and the intersection reaches 20 m. Let

  A pattern in which the delay time from the light emission of the right light emitting unit 23R or the left light emitting unit 23L to the display of the attention image by the right rear display unit 30R or the left rear display unit 30L is 0.8 seconds is referred to as a 0.8 second delay pattern. I will do it.

  In FIG. 11A, the distance is 20 m at time t2. As shown in (b) of FIG. 11, the light emission control unit 13 performs a 0.8 second delay at intervals of 1.5 seconds and 0.5 seconds with the right light emission unit 23R as one light emission time after time t2. The light is emitted in the same color as the pattern.

  The display control unit 15 causes the right rear display unit 30R to display a display time of 0.5 seconds at intervals of 1.5 seconds after a delay time of 0.4 seconds from light emission of a predetermined color after time t2. The caution image of the same color as that of the 0.8 second delay pattern is displayed.

  A pattern in which the delay time from the light emission of the right light emitting unit 23R or the left light emitting unit 23L to the display of the caution image by the right rear display unit 30R or the left rear display unit 30L is 0.4 seconds is referred to as a 0.4 second delay pattern. I will do it.

  The light emission control unit 13 and the display control unit 15 continue to emit light of a predetermined color and display a caution image of a predetermined color with an interval of 0.4 seconds until the distance between the host vehicle and the intersection reaches 5 m. Let

  In FIG. 11A, the distance is 5 m at time t3. As shown in (b) of FIG. 11, the light emission control unit 13 performs a 0.4 second delay at intervals of 1.5 seconds for 0.5 seconds with the right light emission unit 23R as one light emission time after time t3. The light is emitted in the same color as the pattern.

  The display control unit 15 causes the right rear display unit 30R to display a 0.4 second delay pattern at intervals of 1.5 seconds and 0.5 seconds as a single display time simultaneously with light emission of a predetermined color after time t3. The caution image of the same color as the time is displayed.

  A pattern in which a caution image is displayed by the right rear display unit 30R or the left rear display unit 30L simultaneously with the light emission of the right light emission unit 23R or the left light emission unit 23L is referred to as a no-delay pattern.

  The light emission control unit 13 and the display control unit 15 emit light of a predetermined color and display a caution image of a predetermined color until time t4 when the distance between the vehicle and the intersection becomes 0 m (until the vehicle enters the intersection). And continue.

  After time t4, the light emission control unit 13 and the display control unit 15 stop the light emission of the predetermined color and the display of the caution image of the predetermined color.

  As described above, the second embodiment employs a pattern in which the light emission color and the display color of the attention image are constant regardless of the distance to the intersection, and the delay time is different depending on the distance to the intersection.

  Also in the second embodiment, an object of a predetermined color is visually recognized as if it moves from the combiner 22 to the right rear display unit 30R. Therefore, the driver can recognize that he / she is approaching an intersection that turns right.

  In the second embodiment, since the delay time changes according to the distance between the host vehicle and the intersection, a rough distance can be recognized depending on the degree of delay. If the driver emits light and displays a caution image at the same time (or if the time interval from light emission to display of the caution image is minimized), the driver must be right before reaching the intersection that makes a right turn (or a left turn). Can be recognized.

  The operation of the vehicle display device 100 and the control method of the vehicle display device 100 according to the second embodiment will be described with reference to the flowchart shown in FIG.

  In FIG. 13, when the processing by the control unit 10 is started, the light emission control unit 13 and the display control unit 15 determine whether or not an intersection that turns right and left is within a predetermined distance in step S201. If it is not determined that the distance is within the predetermined distance (NO), the light emission control unit 13 and the display control unit 15 repeat the process of step S201. The predetermined distance here is the maximum distance to which the present technology is applied, and is 50 m in the second embodiment.

  If it is determined that the distance is within the predetermined distance (YES), in step S202, the light emission control unit 13 and the display control unit 15 determine whether or not the vehicle is passing the intersection where the vehicle turns right or left. If it is determined that the vehicle is passing the intersection (YES), the light emission control unit 13 and the display control unit 15 emit the right light emission unit 23R or the left light emission unit 23L and the right rear display unit in step S203. The display of the caution image by 30R or the left rear display unit 30L is stopped, and the process returns to step S201.

  If it is not determined that the vehicle is passing through the intersection (NO), in step S204, the light emission control unit 13 and the display control unit 15 determine whether the distance to the intersection that turns right or left is 20 m or more and less than 50 m. Determine. If it is determined that the distance is 20 m or more and less than 50 m (YES), the light emission control unit 13 and the display control unit 15 set a 0.8-second delay pattern in step S206.

  If it is not determined that the distance is 20 m or more and less than 50 m (NO), the light emission control unit 13 and the display control unit 15 have determined whether the distance to the intersection at which the vehicle turns right or left is 5 m or more and less than 20 m in step S205. Determine whether or not. If it is determined that the distance is 5 m or more and less than 20 m (YES), the light emission control unit 13 and the display control unit 15 set a 0.4 second delay pattern in step S207.

  If it is not determined that the distance is 5 m or more and less than 20 m (NO), the light emission control unit 13 and the display control unit 15 set a no-delay pattern in step S208.

  The light emission control unit 13 and the display control unit 15 shift the processing to step S209 after step S206 or S207, and shift the processing to step S211 after S208.

  In step S209, the light emission control unit 13 causes the right light emitting unit 23R to emit light if it is an intersection that makes a right turn, and causes the left light emitting unit 23L to emit light if it is an intersection that makes a left turn. In step S210, the display control unit 15 pays attention to the right rear display unit 30R if it is a right turn intersection and the left rear display unit 30L if it is a right turn intersection in the delay pattern set in either step S206 or S207. The image is displayed in a predetermined color, and the process returns to step S201.

  In step S211, the light emission control unit 13 causes the right light emission unit 23R to emit light if it is an intersection that makes a right turn, and causes the left light emission unit 23L to emit light if it is an intersection that makes a left turn. In step S212, the display control unit 15 displays a caution image on the right rear display unit 30R if it is a right turn intersection at the same time as the right light emission unit 23R or the left light emission unit 23L emits light, and on the left rear display unit 30L if it is a left turn intersection. Is displayed in a predetermined color, and the process returns to step S201.

  The light emission control unit 13 and the display control unit 15 repeat the processing of steps S201 to S212 at a set time interval. Note that if the vehicle does not turn right or left at the intersection determined in step S201 while the light emission and caution image are displayed by the processing of steps S206 to S212, the light emission and caution A process for stopping the display of the image is executed.

  In the third embodiment, the light emission color and the display color of the caution image are changed according to the distance between the host vehicle and the intersection, and the right rear display unit 30R or the right light emission unit 23R or the left light emission unit 23L emits light after the light emission. The delay time until the left rear display unit 30L displays the attention image is configured to be different.

  FIG. 14A is the same as FIG. 7A. As shown in FIG. 14B, the light emission control unit 13 and the display control unit 15 execute a 0.8-second delay pattern in blue during the period from time t1 to t2. The light emission control unit 13 and the display control unit 15 execute a 0.4 second delay pattern in yellow for the period of time t2 to t3. The light emission control unit 13 and the display control unit 15 execute a no-delay pattern in red during the period from time t3 to time t4.

  According to the third embodiment, there is an effect obtained by combining the effects of both the first embodiment and the second embodiment.

  In the vehicle display device 100 shown in FIG. 1, a right rear display unit 30 </ b> R and a left rear display unit 30 </ b> L that display captured image data of the right rear and the left rear are arranged on the right side and the left side of the combiner 22, respectively. ing.

  You may use the right side display part and left side display part which display image data other than the picked-up image data which image | photographed right back and left back. A dedicated right display unit and left display unit may be used to display the attention image.

  When the right display unit and the left display unit are the right rear display unit 30R and the left rear display unit 30L, the attention image may be displayed on the inner end portion or the outer end portion. If the caution image is displayed at the inner end portion or the outer end portion, the image of the rear vehicle or the like displayed on the right rear display portion 30R and the left rear display portion 30L is hardly affected.

  When the dedicated right display unit and left display unit are used for displaying the caution image, the position where the caution image is displayed may be the inner end, the outer end, or the center.

  The present invention is not limited to the present embodiment and Examples 1 to 3 described above, and various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 13 Light emission control part 14 Traveling direction and distance information acquisition part 15 Display control part 21 Projection part 22 Combiner 23L Left light emission part 23R Right light emission part 30L Left rear display part (left side display part)
30R Right rear display (right display)
100 Display device for vehicle

Claims (6)

A head-up display device having a combiner for presenting a virtual image in front of the driver of the vehicle by light indicating a predetermined image projected by the projection unit;
Adjacent to the combiner, a right light emitting part and a left light emitting part respectively disposed on the right side and the left side of the combiner;
A right side display unit and a left side display unit arranged on the right side and the left side of the combiner, apart from the combiner;
Traveling direction / distance information acquisition for acquiring traveling direction information indicating whether to make a right turn or a left turn at an intersection when the vehicle is being routed, and distance information from the current position of the vehicle to an intersection that makes a right turn or a left turn And
When the traveling direction information acquired by the traveling direction / distance information acquisition unit indicates a right turn and indicates that the distance information is less than a predetermined distance, the right light emitting unit emits light at a predetermined time interval. The left light emitting unit controls light emission of the right light emitting unit, and the traveling direction information acquired by the traveling direction / distance information acquiring unit indicates a left turn, and indicates that the distance information is less than the predetermined distance. A light emission control unit for controlling the light emission of the left light emitting unit so as to emit light at the predetermined time interval;
When the traveling direction information acquired by the traveling direction / distance information acquisition unit indicates a right turn and the distance information indicates that the distance is less than the predetermined distance, the predetermined time interval from the light emission of the right light emitting unit The traveling direction obtained by the traveling direction / distance information acquisition unit is controlled to display a caution image for attracting the driver's attention on the right display unit after a predetermined delay time that is shorter than the predetermined time. When the information indicates a left turn and the distance information is less than the predetermined distance, the attention image is displayed on the left display unit after the predetermined delay time from light emission of the left light emitting unit. A display control unit to control;
A vehicle display device comprising: The light emission control unit controls the right light emission unit or the left light emission unit to emit light in a predetermined color,
The vehicle display device according to claim 1, wherein the display control unit controls the caution image to be displayed in the predetermined color on the right display unit or the left display unit. The light emission control unit and the display control unit divide a distance less than the predetermined distance into a plurality of groups,
The light emission control unit controls the right light emission unit or the left light emission unit to emit light in different colors for each of the plurality of groups,
The vehicle display device according to claim 1, wherein the display control unit controls the right display unit or the left display unit to display the caution image in a different color for each of the plurality of groups. . The display control unit divides a distance less than the predetermined distance into a plurality of groups,
The vehicle display device according to claim 1, wherein the display control unit shortens the predetermined delay time as the group has a shorter distance.   The vehicle display device according to claim 4, wherein the display control unit sets the predetermined delay time in the group with the shortest distance to zero. When the vehicle is being routed, obtain direction information indicating whether to make at least a right turn or a left turn at the intersection, and distance information from the current position of the vehicle to the intersection to turn right or left,
When the traveling direction information indicates a right turn and the distance information is less than a predetermined distance, the light projected by the projection unit is adjacent to a combiner for presenting a virtual image in front of the driver of the vehicle. Control the right light emitting unit arranged on the right side of the combiner to emit light at a predetermined time interval,
When the traveling direction information indicates a right turn and the distance information indicates that the distance information is less than the predetermined distance, a predetermined delay time that is shorter than the predetermined time interval from the light emission of the right light emitting unit. Later, control is performed to display a caution image for attracting the driver's attention on the right side display unit arranged on the right side of the combiner apart from the combiner,
When the traveling direction information indicates a left turn and the distance information indicates that the distance is less than the predetermined distance, a left light emitting unit disposed on the left side of the combiner adjacent to the combiner is set at the predetermined time interval. Control to emit light,
When the traveling direction information indicates a left turn and the distance information indicates less than the predetermined distance, the combiner is separated from the combiner after the predetermined delay time from light emission of the left light emitting unit. A control method for a vehicular display device, comprising: controlling the caution image to be displayed on a left display unit disposed on the left side of the vehicle.

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