Display device for vehicle

Abstract

A vehicle display device (1) is characterized by being provided with: a display (11) that displays a display image (Vi) in front of a driver (200) of a vehicle (100); an acquisition unit (12) that acquires the curvature of a curve on the travel road (RD); and a control unit (13) that, when the vehicle travels on a curved travel road, performs a display image movement process for moving and displaying a display image in the same direction as the direction in which the travel road (RD) is curved on the basis of the curvature of the curve acquired by the acquisition unit, and displays the display image in the same direction as the direction in which the travel road (RD) is curved on the basis of the curvature of the curve acquired by the acquisition unit. When the vehicle travels on a curved road, the curvature of the curve acquired by the acquisition unit is equal to or greater than a predetermined first threshold value. The control unit performs, together with the display image movement process, at least one of a first display image change process for displaying the display image while increasing the transmittance and a second display image change process for displaying the display image while reducing the transmittance.

Description

Technical Field

[0001] The present invention relates to a display device for a vehicle. Background Art

[0002] In the past, there was a device that displayed information related to the vehicle as a virtual image to the vehicle driver. Patent document 1 discloses a vehicle display device, which includes a display unit that can be visually confirmed by the vehicle occupants, and changes the image of the content displayed on the display unit in the same direction as the direction of the turn of the vehicle's driving road.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2020-16583 Summary of the invention

[0006] Technical problem that the invention aims to solve

[0007] In vehicle display devices, there is still room for improvement in appropriately displaying display images. For example, when a vehicle is traveling on a curve, depending on the curvature of the curve of the traveling road, it is sometimes difficult for the driver to visually confirm the display image displayed in front of the driver, or the speed difference between the static display image and the moving background makes the driver feel uncomfortable with the display image. Therefore, in a vehicle display device, it is desired to be able to appropriately display the display image according to the traveling road.

[0008] An object of the present invention is to provide a vehicle display device capable of appropriately displaying a display image in accordance with the shape of a traveling road.

[0009] Technical solutions to the problem

[0010] The vehicle display device of the present invention is characterized in that it includes: a display, which is mounted on the vehicle and displays a display image in front of a driver of the vehicle; an acquisition unit, which acquires the curvature of a curve on a driving road on which the vehicle is traveling; and a control unit, which controls the display, wherein the display image includes information related to the vehicle, and when the vehicle is traveling on a curved driving road, the control unit performs display image movement processing, wherein the display image is moved to the same direction as the curvature of the driving road relative to a display position of the display image displayed when the vehicle is traveling straight, according to the curvature of the curve acquired by the acquisition unit, and displayed, and when the vehicle is traveling on the curved driving road, when the curvature of the curve acquired by the acquisition unit is greater than a predetermined first threshold value, the control unit performs at least one of a first display image change processing and a second display image change processing together with the display image movement processing, wherein the first display image change processing displays the display image with a transmittance higher than that of the display image displayed when the vehicle is traveling straight, and the second display image change processing displays the display image in a smaller manner than that of the display image displayed when the vehicle is traveling straight.

[0011] Effects of the Invention

[0012] The vehicle display device of the present invention can improve the visual confirmation of the display image by moving the display image in the same direction as the curvature of the traveling road and displaying it according to the curvature of the curve. In addition, when the curvature of the curve is above the first threshold value (for example, a sharp curve), the display image can be made less conspicuous by increasing the transmittance of the display image or reducing the display image, and the driver's discomfort with the display image due to the speed difference between the moving background and the display image can be suppressed. That is, the vehicle display device of the present invention has the effect of being able to appropriately display the display image Vi according to the shape of the traveling road RD. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic structural diagram of a vehicle display device according to an embodiment.

[0014] Figure 2 It is a diagram showing an example of display image movement processing in the vehicle display device according to the embodiment.

[0015] Figure 3 (A) to (E) are diagrams showing the relationship between a display image displayed by the display image shift processing in the vehicle display device according to the embodiment and the steering wheel.

[0016] Figure 4 (A) is a diagram showing an example of a display image of a vehicle display device according to an embodiment, Figure 4 (B) to (E) are diagrams showing an example of display image change processing in the vehicle display device according to the embodiment.

[0017] Figure 5 (A) is a graph showing the correspondence between the coordinates of the driver's viewpoint and the direction of the driver's viewpoint in the second modification example, Figure 5 (B) is a graph showing the correspondence between the coordinates of the display position of the display image and the direction of the driver's viewpoint in the second modification example, Figure 5 (C) Figure 5 (D) is a graph showing the correspondence between the brightness of the display image and the direction of the driver's viewpoint in the second modification.

[0018] Figure 6 (A) to (C) are diagrams showing examples of display images of the vehicle display device according to the third modification.

[0019] Explanation of symbols

[0020] 1: Vehicle display device

[0021] 12: Get Department

[0022] 11: Display

[0023] 13: Control Department

[0024] 100: Vehicles

[0025] 120: Vehicle Sensors

[0026] 130: Vehicle navigation system

[0027] 140: ADAS

[0028] 150: Vehicle Control Department

[0029] 160: Driver Monitoring Device

[0030] 200: Driver

[0031] Vi, Vi1, Vi3~Vi5: Display image

[0032] RD: Driving Road

[0033] ST: Steering wheel DETAILED DESCRIPTION

[0034] Hereinafter, a vehicle display device according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In addition, the present invention is not limited to this embodiment. In addition, the constituent elements of the following embodiments include elements that can be easily conceived by a person skilled in the art, or substantially the same elements.

[0035] [Implementation Method]

[0036] Reference Figures 1 to 6, an embodiment is described. This embodiment relates to a display device for a vehicle. Figure 1 is a schematic structural diagram of a vehicle display device according to an embodiment, Figure 2 is an example of a display image movement process of a vehicle display device according to an embodiment. Figure 3 (A) to (E) are diagrams showing the relationship between a display image displayed by a display image shift process in a vehicle display device according to an embodiment and a steering wheel, Figure 4 (A) is a diagram showing an example of a display image of a vehicle display device according to an embodiment, Figure 4 (B) to (E) are diagrams showing an example of display image change processing in the vehicle display device according to the embodiment.

[0037] like Figure 1 As shown, the vehicle display device 1 is, for example, a head-up display device mounted on a vehicle 100 such as a car. The vehicle display device 1 displays the display image Vi as a virtual image to the driver 200. In the embodiment, the vehicle 100 is a right-hand drive vehicle. In addition, the vehicle display device 1 may also be an augmented reality head-up display device (AR-HUD) capable of changing the display distance of the display image seen by the driver 200.

[0038] The vehicle display device 1 of the embodiment includes a display 11, an acquisition unit 12, a control unit 13, and an optical component 13. The display 11, the acquisition unit 12, the control unit 13, and the optical component 13 are accommodated in a housing, and the housing is accommodated inside an instrument panel 110 of the vehicle 100. An opening is formed at a position of the instrument panel 110 that faces the windshield WS of the vehicle 100.

[0039] The display 11 is a device for displaying images, and includes, for example, a liquid crystal display unit 11a and an optical component 11b. The liquid crystal display unit 11a is, for example, a TFT-LCD (Thin Film Transistor-Liquid Crystal Display), and outputs display light of the display image Vi through the light of a backlight unit. The optical component 11b is, for example, a reflector, and reflects the display light from the liquid crystal display unit 11a toward the windshield WS. According to this structure, the display 11 displays various display images Vi in front of the driver 200 through the opening of the instrument panel 110. For example, Figure 1As shown in the upper left of the paper, the display 11 can display a circular display image Vi0 that surrounds the person walking in front of the vehicle 100 as viewed from the driver 200, in order to alert the driver 200 to the person walking in front of the vehicle 100. In addition, more specifically, by acquiring external information of the vehicle 100 (such as the coordinate value of the person walking in front of the vehicle 100) from the ADAS 140 and the vehicle control unit 150 described later, and based on the assembly position of the vehicle-mounted camera (the first vehicle-mounted camera 140a described later), the vehicle display device 1, etc., the control unit 13 displays the display image Vi0 in a manner overlapping the person, thereby displaying the display image Vi0.

[0040] When the vehicle 100 is traveling on a turning road RD, the acquisition unit 12 acquires information from the ADAS 140, the vehicle-mounted sensor 120, the vehicle navigation system 130, the vehicle control unit 150, and the driver monitoring system (DMS) 160 described later, thereby acquiring the curvature of the curve in the driving road RD on which the vehicle 100 is traveling.

[0041] Here, the curvature of the curve of the traveling road RD corresponds to the steepness of the curve in the traveling road RD. When the curvature of the curve is relatively large, it means a sharp curve, and when the curvature of the curve is relatively small, it means a gentle curve.

[0042] The control unit 13 controls the display 11 to display the display image Vi. The control unit 13 of the embodiment can change the type, size, etc. of the display image Vi by controlling the liquid crystal display unit 11a. In addition, the control unit 13 can change the transmittance when the display image Vi is displayed in front of the driver 200 by controlling the liquid crystal display unit 11a. Moreover, the control unit 13 can change the display position of the display image Vi displayed in front of the driver 200 by controlling the optical component 11b. In the embodiment, the control unit 13 changes the display position of the display image Vi displayed in front of the driver 200 by changing the angle of the reflector as the optical component 11b.

[0043] In the embodiment, the vehicle 100 is equipped with an in-vehicle sensor 120 , a vehicle navigation system 130 , an Advanced Driver-Assistance System (ADAS) 140 , a vehicle control unit 150 , and a driver monitoring system (DMS) 160 .

[0044] The vehicle-mounted sensor 120 includes, for example, an ambient light sensor, a three-axis gyro sensor, an illumination switch sensor, and an ambient temperature sensor. The ADAS 140 includes a first vehicle-mounted camera 140a and a radar 140b for photographing the scenery in front of the vehicle, and is connected to the vehicle display device 1 via a gateway 141. The ADAS 140 uses the first vehicle-mounted camera 140a and the radar 140b to grasp the conditions around the vehicle V and assist the driver's driving operation.

[0045] The vehicle control unit 150 is, for example, an ECU (Electronic Control Unit), which controls various components in the vehicle 100. The vehicle control unit 150 can send various information related to the vehicle, such as the steering angle of the steering wheel ST of the vehicle 100 and the speed of the vehicle 100, to the acquisition unit 12. The driver monitoring device 160 includes a second vehicle-mounted camera arranged in front of the driver, and acquires various information related to the driver from the image of the driver captured by the second vehicle-mounted camera. For example, the driver monitoring device 160 acquires the driver's state information, the driver's viewpoint position information, etc.

[0046] In the embodiment, the acquisition unit 12 acquires information on the steering angle of the steering wheel ST of the vehicle 100 from the vehicle control unit 150 , thereby acquiring the curvature of the curve of the road on which the vehicle 100 is traveling.

[0047] When the vehicle 100 is traveling on a straight road RD, that is, when the vehicle 100 is traveling straight, the acquisition unit 12 acquires information indicating that the steering wheel ST of the vehicle 100 is not substantially turned as information related to the steering angle of the steering wheel ST of the vehicle 100. Then, the control unit 13 determines that the vehicle 100 is traveling straight by acquiring information indicating that the steering wheel ST of the vehicle 100 is not substantially turned from the acquisition unit 12. When the control unit 13 determines that the vehicle 100 is traveling straight, it controls the display 11 to display the display image Vi1 in front of the driver (see Figure 2 ) In the embodiment, the vehicle 100 is a right-hand drive vehicle, and therefore the display image Vi1 is displayed below the windshield WS of the vehicle 100 and slightly to the right when viewed from the driver's seat side of the vehicle 100 .

[0048] Furthermore, when the vehicle 100 is traveling on a curved driving road RD, the acquisition unit 12 estimates and acquires the curvature of the curve of the driving road RD based on information related to the steering angle of the steering wheel ST of the vehicle 100. That is, the acquisition unit 12 estimates and acquires the curvature of the curve of the driving road RD based on information such as to which side of the left or right side the steering wheel ST of the vehicle 100 is turned and to what extent when viewed from the driver's seat of the vehicle 100. Then, the control unit 13 determines whether the vehicle 100 is traveling on the curved driving road RD based on the curvature of the curve acquired from the acquisition unit 12, and performs display image movement processing when it is determined that the vehicle 100 is traveling on the curved driving road RD. In the display image movement processing, the control unit 13 determines the curvature of the curve of the driving road RD based on the curvature of the curve, such as Figure 2 As shown, the display image Vi is moved to the same direction as the direction in which the travel road RD turns relative to the display position of the display image Vi displayed when the vehicle 100 is traveling straight, and is displayed. For example, the larger the curvature of the curve acquired by the acquisition unit 12 is, the greater the display position of the display image Vi is, the more the control unit 13 moves the display image Vi relative to the display position of the display image Vi displayed when the vehicle 100 is traveling straight.

[0049] exist Figure 2 In the case shown, when viewed from the driver's seat of the vehicle 100, the travel road RD turns left, and the control unit 13 causes the display image Vi to move from the position in front of the driver to the left side when viewed from the driver's seat of the vehicle 100. For example, the control unit 13 causes the display image Vi to slide from the position in front of the driver to the left side when viewed from the driver's seat of the vehicle 100.

[0050] use Figure 3 (A)~ Figure 3 (E) of FIG. 10 , the display image movement processing is described in detail. Figure 3 (A)~ Figure 3 In (E), in order to simplify the drawing, the display image Vi0 is simplified and recorded as the symbol "A". Figure 3 (A)~ Figure 3 The windshield WS in (E) is obtained by extracting a part of the lower part of the windshield WS of the vehicle 100 .

[0051] exist Figure 3 (A) shows the display position of the display image Vi0 when the steering angle of the steering wheel ST is substantially 0 and the vehicle 100 is traveling straight. At this time, the display position of the display image Vi0 is in front of the driver 200.

[0052] like Figure 3As shown in (B), when the steering wheel ST is turned to the right when viewed from the driver 200, the control unit 13 performs display image movement processing to cause the display 11 to move the display image Vi from the front position of the driver 200 to the right side when viewed from the driver's seat. The control unit 13 may also perform animation display such as sliding the display image Vi while displaying an afterimage of the display image Vi when moving and displaying the display image Vi.

[0053] In addition, in the display image movement processing, the control unit 13 may increase the transmittance of the display image Vi1 displayed in front of the driver without sliding the display image Vi and display it as an afterimage Vi2, and display the new display image Vi1 at a position to the right of the front of the driver when viewed from the driver's seat, and then make the afterimage Vi2 non-displayed (see Figure 3 (C)).

[0054] On the other hand, Figure 3 As shown in (D), when the steering wheel ST is turned to the left when viewed from the driver 200, the control unit 13 performs display image movement processing to cause the display 11 to slide the display image Vi from the front position of the driver toward the left when viewed from the driver's seat.

[0055] Furthermore, in the display image movement processing, when the display image Vi is moved from the front position of the driver to the left side when viewed from the driver's seat, the control unit 13 may increase the transmittance of the display image Vi1 displayed at the front position of the driver and display it as an afterimage Vi2 without sliding the display image Vi, and display the new display image Vi1 at a position on the left side relative to the front position of the driver when viewed from the driver's seat, and then set the afterimage Vi2 to non-display (refer to FIG. 1 ). Figure 3 (E)).

[0056] like Figure 4As shown in (A), the display image Vi1 of the embodiment includes a speed display FI1, a navigation display FI2, and a display FI3 indicating the legal speed as displays (images) indicating information related to the vehicle 100. The display image Vi0 is a group of images in which a plurality of displays (speed display FI1, navigation display FI2, and display FI3 indicating the legal speed) indicating information related to the vehicle 100 are surrounded by a frame-shaped display (image) FI4. In addition, the frame-shaped display FI4 may not be included in the display image Vi. In this case, the display image Vi0 is a group of images composed of a plurality of displays (displays FI1 to FI3) having a fixed relative position relationship. Here, among the plurality of displays FI1 to FI3, "the relative position relationship is fixed" means that even if the display position of the display image Vi0 is moved, the images composed of the displays FI1 to FI3 before and after the movement are displayed as being in a congruent relationship, and even if the display image Vi is displayed in a reduced or enlarged manner, the images composed of the displays FI1 to FI3 before and after the reduced display or before and after the enlarged display are displayed as being in a similar relationship. In addition, when a part of the displays FI1 to FI3 is omitted, the above-mentioned positional relationship is applied only to the displays that are not omitted.

[0057] exist Figure 4 In (A), the speed display FI1 indicates the travel speed of the vehicle 100 using bold letters, numbers and symbols. The navigation display FI2 is represented by a bird's-eye view of the road on which the vehicle 100 is traveling, and the guidance display for guiding the vehicle 100 is represented by arrows. The display indicating the legal speed is displayed as an icon simulating a speed mark.

[0058] The display image Vi1 is processed as a group of images in the display image movement process and the display image change process described later. For example, in the display image movement process, a plurality of displays (speed display FI1, navigation display FI2, and display FI3 indicating the legal speed) showing information related to the vehicle 100 and a frame-shaped display FI4 are moved and displayed in a state where the relative positional relationship between them is fixed.

[0059] When the vehicle 100 is traveling on a turning driving road RD, the control unit 13 performs a display image movement process and a display image change process at the same time when the curvature of the curve acquired by the acquisition unit 12 is above a predetermined first threshold value, and the display image change process makes the display of the display image Vi1 inconspicuous. In an embodiment, the first threshold value is a threshold value for determining whether the curve of the driving road RD is a sharp curve. For example, multiple first threshold values ​​can be set according to the driving speed of the vehicle 100. For example, when the driving speed of the vehicle 100 is 60 km / h, the first threshold value can be set to a curvature of 0.0067 (radius of curvature: 150 m), and when the driving speed of the vehicle 100 is 120 km / h, it can be set to a curvature of 0.001 (radius of curvature: 710 m).

[0060] As the display image changing process, the control unit 13 of the embodiment performs a first display image changing process (see Figure 4 (B) and Figure 4 (C)) and the second display image change process (refer to Figure 4 (D) and Figure 4 At least any one of (E)), the first display image change processing causes the display image Vi to be displayed with a transmittance higher than that of the display image Vi displayed when the vehicle 100 is moving straight, and the second display image change processing causes the display image Vi to be displayed smaller than that of the display image Vi displayed when the vehicle 100 is moving straight.

[0061] For example, when performing the first display image change processing, the control unit 13 adjusts the output of the backlight unit of the display 11 so that the brightness of the display light of the display image Vi1 emitted from the display 11 is smaller than the brightness of the display light of the display image Vi1 emitted from the display 11 when the vehicle 100 is moving straight, thereby improving the transmittance of the display image Vi.

[0062] In addition, when performing the second display image change process, the control unit 13 controls the liquid crystal display unit 11a of the display 11 so that the display image Vi1 is displayed smaller than the display image Vi1 when the vehicle 100 is moving straight. In addition, when performing the second display image change process, a part of the multiple displays showing information related to the vehicle 100 may be omitted and displayed. For example, Figure 4 As shown in (E) of FIG. 1 , the display image Vi1 may be displayed smaller by omitting the display FI3 indicating the legal speed among the speed display FI1 , the navigation display FI2 , and the display FI3 indicating the legal speed.

[0063] As described above, the vehicle display device 1 of the embodiment includes: a display 11, which is mounted on the vehicle 100 and displays a display image Vi in front of the driver 200 of the vehicle 100; an acquisition unit 12, which acquires the curvature of the curve in the driving road RD on which the vehicle 100 is traveling; and a control unit 13, which controls the display 11, the display image Vi includes information related to the vehicle 100, and when the vehicle 100 is traveling on the curved driving road RD, the control unit 13 performs a display image movement process, and the display image movement process makes the display image Vi relative to the display image displayed when the vehicle 100 is traveling straight according to the curvature of the curve acquired by the acquisition unit 12. The display position of the image Vi is moved to the side in the same direction as the direction in which the driving road RD turns, and when the vehicle 100 is traveling on the turning driving road RD, when the curvature of the curve acquired by the acquisition unit 12 is greater than a predetermined first threshold value, the control unit 13 performs at least one of a first display image change process and a second display image change process and a display image movement process. The first display image change process displays the display image Vi with a higher transmittance than the display image Vi displayed when the vehicle 100 is traveling straight, and the second display image change process displays the display image Vi smaller than the display image Vi displayed when the vehicle 100 is traveling straight.

[0064] In the vehicle display device 1 of the embodiment, the display image Vi is moved and displayed in the same direction as the direction in which the travel road RD turns according to the curvature of the curve, thereby improving the visual confirmation of the display image Vi. In addition, in the vehicle display device 1 of the embodiment, when the curvature of the curve is greater than the first threshold value (for example, a sharp curve), the transmittance of the display image Vi is increased or the display image Vi is reduced, so that the display image Vi is not conspicuous, and the discomfort of the driver 200 caused by the speed difference between the moving background and the display image Vi can be suppressed. That is, the vehicle display device 1 of the embodiment can appropriately display the display image Vi according to the shape of the travel road RD.

[0065] In the embodiment, the display image Vi is a set of images in which a plurality of displays FI1 to FI3 representing information on the vehicle 100 are surrounded by a frame-like display FI4, or a set of images consisting of a plurality of displays (displays FI1 to FI3) having a fixed relative positional relationship.

[0066] In the vehicle display device 1 of the embodiment, multiple displays FI1 to FI3 representing vehicle-related information are surrounded by a frame-shaped display FI4, or the relative position relationship of the multiple displays FI1 to FI3 is fixed, so that the multiple displays FI1 to FI3 are processed as a whole, so that, for example, before and after the display image movement processing, the driver can easily visually confirm a specific display representing vehicle-related information in the display image.

[0067] In the embodiment, when the control unit 13 displays the display image Vi smaller than the display image Vi displayed when the vehicle 100 is traveling straight, the control unit 13 displays the display image Vi by omitting a part of the plurality of displays FI1 to FI3 showing information related to the vehicle included in the display image Vi.

[0068] The vehicle display device 1 of the embodiment omits a portion of the information related to the vehicle 100 when displaying the display image Vi in a smaller size, thereby, for example, increasing the display range of particularly important information in the display image Vi, thereby preventing the driver 200 from missing particularly important information.

[0069] Furthermore, in the above-mentioned embodiment, an example is described in which the acquisition unit 12 acquires the curvature of the curve of the travel road RD by acquiring information related to the steering angle of the steering wheel ST from the vehicle control unit 150, but the present invention is not limited to this structure, and the acquisition unit 12 may acquire the curvature of the curve of the travel road RD by acquiring information from various electronic devices, vehicle-mounted systems, etc. mounted on the vehicle 100. In addition, the acquisition unit 12 may combine a plurality of information acquired from various electronic devices, vehicle-mounted systems, etc. mounted on the vehicle 100 to acquire the curvature of the curve of the travel road RD.

[0070] For example, the acquisition unit 12 may acquire information on the angular velocity of the vehicle 100 by using the three-axis gyro sensor of the vehicle-mounted sensor 120, thereby acquiring the curvature of the curve of the driving road RD on which the vehicle 100 is traveling. In addition, for example, the curvature of the curve of the driving road RD on which the vehicle 100 is traveling may be acquired by acquiring information related to the driving road RD of the vehicle 100 from the vehicle navigation system 130. Furthermore, the shape of the driving road RD may be acquired based on an image of the front of the vehicle 100 acquired from the ADAS 140, thereby acquiring the curvature of the curve of the driving road RD on which the vehicle 100 is traveling.

[0071] [First Modification of Embodiment]

[0072] A first modified example of the embodiment will be described.

[0073] In the first modified example, when the curvature of the curve acquired by the acquisition unit 12 is less than the first threshold value and the time that the vehicle 100 travels on the curved driving road RD is greater than or equal to a predetermined second threshold value, the control unit 13 performs the display image movement processing. For example, the acquisition unit 12 acquires the time that the vehicle 100 travels on the curved driving road RD based on the information related to the driving road RD acquired from the vehicle navigation system 130 and the information related to the driving speed of the vehicle 100 acquired from the vehicle control unit 150. In addition, the time that the vehicle 100 travels on the curved driving road RD may be acquired based on the information related to the driving speed of the vehicle 100 traveling on the curved driving road RD. In this case, the timing of performing the display movement processing is delayed by a certain time from when the vehicle 100 enters the curve, and the acquisition unit 12 starts the display movement processing from the moment when it is determined that the time that the vehicle 100 travels on the curved driving road RD is greater than or equal to the predetermined second threshold value.

[0074] The second threshold value is an indicator for determining whether the time during which the vehicle 100 travels on the curved driving road RD is a certain length of time. That is, in the first modification, when the driving road RD is a relatively gentle and long curve, the control unit 13 performs the display image movement process. The second threshold value may be set by the driver 200 himself considering the appearance of the display image Vi, or may be set in advance in the vehicle display device 1.

[0075] In addition, in the first modified example, when the curvature of the curve acquired by the acquisition unit 12 is greater than the first threshold value, or when the time that the vehicle 100 travels on the curved driving road RD is less than a predetermined second threshold value, the control unit 13 does not perform the display image movement process, but performs at least one of the first display image change process and the second display image change process. That is, in the first modified example, when the driving road RD is a relatively sharp curve or when the time that the vehicle 100 travels on the curved driving road RD is short, the display image movement process is not performed, but at least one of the first display image change process and the second display image change process is performed.

[0076] As described above, in the first variant, when the curvature of the curve acquired by the acquisition unit 12 is less than the first threshold value and the time that the vehicle 100 travels on the turning road RD is greater than the predetermined second threshold value, the control unit 13 performs display image movement processing. When the curvature of the curve acquired by the acquisition unit 12 is greater than the first threshold value, or the time that the vehicle 100 travels on the turning road RD is less than the predetermined second threshold value, the control unit 13 does not perform display image movement processing, but performs at least one of the first display image change processing and the second display image change processing.

[0077] In the vehicle display device 1 of the first modified example, when the curvature of the curve acquired by the acquisition unit 12 is greater than the first threshold value, or when the time for which the vehicle 100 travels on the curved driving road RD is less than a predetermined second threshold value, the control unit 13 does not perform the display image movement process, but performs at least one of the first display image change process and the second display image change process, thereby avoiding frequent display image movement processes on mountain roads with continuous small curves. The vehicle display device 1 of the first modified example can suppress the driver from getting bored with the display image by avoiding frequent display image movement processes.

[0078] [Second Modification of Embodiment]

[0079] A second variation of the embodiment will be described. In the second variation, the acquisition unit 12 acquires the viewpoint position information of the driver 200 from the driver monitoring device 160, and when the control unit 13 moves the display image, the display position of the display image Vi1 is changed according to the viewpoint position information of the driver 200. The other structures are the same as those of the vehicle display device 1 involved in the embodiment.

[0080] Figure 5 (A) is a graph showing the correspondence between the coordinates of the driver's viewpoint and the direction of the driver's viewpoint in the second modification example, Figure 5 (B) is a graph showing the correspondence between the coordinates of the display position of the display image and the direction of the driver's viewpoint in the second modification example, Figure 5 (C) Figure 5 (D) is a graph showing the correspondence between the brightness of the display image and the direction of the driver's viewpoint in the first modification example.

[0081] Figure 5 The horizontal axis in the graphs (A) to (D) corresponds to the direction of the viewpoint of the driver 200 . Figure 5 The vertical axis of (A) represents the coordinates of the viewpoint position of the driver 200 in the vehicle width direction. A larger value of the vertical axis means that the viewpoint position of the driver 200 is located further to the left relative to the front of the driver 200 when viewed from the driver 200.

[0082] The coordinates of the viewpoint position of the driver 200 correspond to the direction of the viewpoint of the driver 200, such as Figure 5 As shown in (A) of FIG. 1 , when viewed from the driver 200 , the coordinates of the viewpoint position of the driver 200 increase as the direction of the viewpoint of the driver 200 moves to the left.

[0083] Figure 5 The vertical axis of (B) represents the coordinates of the display position of the display image Vi1 in the vehicle width direction. Figure 5The dotted line L1 between (A) and (D) indicates the position (display limit position) where the display 11 can display the display image Vi1 to the maximum extent on the left side when viewed from the driver 200. Figure 5 As shown in FIG. 2 (B), the control unit 13 may change the coordinates of the display image Vi1 in accordance with the direction of the viewpoint of the driver 200 .

[0084] When the viewpoint of the driver 200 moves to the left beyond the position indicated by the dotted line L1 , the display image Vi1 is displayed at a position where the display 11 can display the display image Vi1 to the left at the maximum.

[0085] Figure 5 The vertical axis of (C) corresponds to Figure 5 The height of the brightness of the display image Vi1 shown in (B). Figure 5 (C) shows an example in which the viewpoint of the driver 200 moves from the front side of the driver 200 to the left side in the direction of arrow Y1.

[0086] exist Figure 5 In (C), when the viewpoint of the driver 200 is within the range where the display image Vi1 can be displayed by the display 11, that is, when the viewpoint of the driver 200 is located on the front side of the dotted line L1, the control unit 13 displays the display image Vi1 at normal brightness (normal transmittance). Figure 5 In (C), when the viewpoint of the driver 200 is located at a position to the left of the dotted line L1, the control unit 13 makes the brightness of the display image Vi1 lower than the normal brightness (increases the transmittance) and displays it. At this time, the further the viewpoint of the driver 200 moves to the left from the dotted line L1, the lower the brightness of the display image Vi1 is displayed by the control unit 13. Then, when the brightness of the display image Vi1 reaches or falls below a certain value, even if the viewpoint of the driver 200 moves to a position to the left of the position L2, the display image Vi1 is displayed while maintaining the brightness. At this time, the brightness of the display image Vi1 is maintained at a brightness such that the driver 200 cannot fully visually confirm the display image Vi1, for example.

[0087] Figure 5 (D) shows the change in brightness of the display image Vi1 when the driver's viewpoint moves from the left side to the front side. Figure 5 The brightness of the display image Vi1 changes when the image moves in the direction opposite to the direction of the arrow Y1 in (C).

[0088] Figure 5 The vertical axis of (D) is Figure 5 (C) also corresponds to the height of the brightness of the displayed image Vi1. Figure 5As described above, (C) shows an example in which the viewpoint of the driver 200 moves from the left side to the front side in the direction of the arrow Y2.

[0089] exist Figure 5 In (D), when the viewpoint of the driver 200 is located to the left of the position indicated by the dotted line L1, the display image Vi1 is displayed at a position on the left where the display 11 can display the display image Vi1 to the maximum extent with a brightness lower than the normal brightness. Then, the closer the viewpoint of the driver 200 is to the dotted line L1, the higher the brightness of the display image Vi1 is displayed. At this time, the control unit 13 increases the brightness of the display image Vi1. Figure 5 When the brightness of the display image Vi1 in (C) stops decreasing (L2), the brightness of the display image Vi1 starts to increase at a position L3 on the side of the dotted line L1. And when the viewpoint of the driver 200 moves to the front side of the position shown by the dotted line L1, the display image Vi1 is displayed at a normal brightness at a position L4 slightly on the front side of the position of the dotted line L1.

[0090] As described above, in the second variant, the acquisition unit 12 acquires the position information of the viewpoint of the driver 200, and the control unit 13 displays the display image Vi1 corresponding to the position of the viewpoint of the driver 200 in the vehicle width direction of the vehicle 100 in the display image movement processing. In the case where the position of the viewpoint of the driver 200 moves in the vehicle width direction beyond the display limit position L1 which is the limit position that enables the display 11 to display the display image Vi1 corresponding to the position of the viewpoint of the driver 200, the control unit 13 displays the display image Vi1 at the display limit position L1, and the farther the position of the viewpoint of the driver 200 that moves beyond the display limit position L1 is from the display limit position L1, the control unit 13 increases the transmittance of the display image Vi1 for display.

[0091] In the vehicle display device 1 of the second variant, the transmittance of the display image Vi1 is increased and displayed as the position of the viewpoint of the driver 200 that moves beyond the display limit position L1 is farther away from the display limit position L1, thereby preventing the driver 200 from being annoyed by the display image Vi displayed at a position slightly away from the viewpoint.

[0092] [Third Modification of Embodiment]

[0093] Next, a third modification example of the embodiment will be described. Figure 6 (A) to (C) are diagrams showing examples of display images of the vehicle display device according to the third modification.

[0094] Figure 6The display image Vi3 shown in (A) is a display image in which the speed display FI1, the navigation display FI2, and the display FI3 indicating the legal speed are surrounded by a semi-transparent background color such as pink. Figure 6 The display image Vi4 shown in (B) has a bar-shaped display extending in the vehicle width direction arranged below the speed display FI1, the navigation display FI2, and the display FI3 indicating the legal speed arranged in the vehicle width direction, as a set of images. Figure 6 In the display image Vi5 shown in (C), the four corners of the area where the speed display FI1, the navigation display FI2, and the display FI3 indicating the legal speed are arranged are surrounded by four dots as a set of images.

[0095] In the third modification, the vehicle display device 1 displays any one of the display images Vi3 to Vi5 instead of the display image Vi1. The other configurations are the same as those of the above-described embodiment.

[0096] Furthermore, in the above-described embodiment and modified examples, the vehicle 100 is described as a right-hand drive vehicle, but the vehicle 100 may be a left-hand drive vehicle.

[0097] The contents disclosed in the above-mentioned embodiment and each modification example can be executed in combination as appropriate.

Claims

1. A vehicle display device, characterized in that: have: a display mounted on a vehicle so that a display image is displayed in front of a driver of the vehicle; an acquisition unit, the acquisition unit acquiring a curvature of a curve in a road on which the vehicle is traveling; as well as a control unit, the control unit controlling the display, The displayed image includes information related to the vehicle, When the vehicle is traveling on the curved road, the control unit performs display image movement processing, wherein the display image movement processing moves the display image to the same direction as the direction in which the road is curved, relative to a display position of the display image displayed when the vehicle is traveling straight, based on the curvature of the curved road acquired by the acquisition unit, and displays the display image. In the case where the vehicle is traveling on the curved driving road, when the curvature of the curve acquired by the acquisition unit is above a predetermined first threshold value, the control unit performs at least one of a first display image change process and a second display image change process together with the display image movement process, wherein the first display image change process displays the display image with a transmittance increased compared to the transmittance of the display image displayed when the vehicle is traveling straight, and the second display image change process displays the display image in a smaller size than the display image displayed when the vehicle is traveling straight.

2. The vehicle display device according to claim 1, wherein: When the curvature of the curve acquired by the acquisition unit is smaller than the first threshold value and the time for which the vehicle travels on the curved road is greater than or equal to a predetermined second threshold value, the control unit performs the display image movement processing, When the curvature of the curve acquired by the acquisition unit is greater than the first threshold value, or when the time the vehicle travels on the curved driving road is less than a predetermined second threshold value, the control unit does not perform the display image movement processing, but performs at least either the first display image change processing or the second display image change processing.

3. The vehicle display device according to claim 1 or 2, wherein: The display image is a set of images in which a plurality of displays indicating information related to the vehicle are surrounded by a frame-shaped display, or a set of images consisting of the plurality of displays having a fixed relative positional relationship.

4. The vehicle display device according to claim 3, wherein: The control unit displays the display image by omitting a part of the plurality of displays showing the information related to the vehicle included in the display image, when displaying the display image smaller than the display image displayed when the vehicle is traveling straight.

5. The vehicle display device according to claim 1 or 2, wherein: The acquiring unit acquires the position information of the driver's viewpoint, In the display image moving process, the control unit displays the display image corresponding to the position of the driver's viewpoint in the vehicle width direction of the vehicle, When the position of the driver's viewpoint moves in the vehicle width direction beyond a limit position at which the display can display the display image corresponding to the position of the driver's viewpoint, that is, a display limit position, the control unit displays the display image at the display limit position, The control unit displays the display image with a higher transmittance as the position of the driver's viewpoint that has moved beyond the display limit becomes farther away from the display limit.

6. The vehicle display device according to claim 3, wherein: have: The acquiring unit acquires the position information of the driver's viewpoint, In the display image moving process, the control unit displays the display image in correspondence with the position of the driver's viewpoint in the vehicle width direction of the vehicle, When the position of the driver's viewpoint moves in the vehicle width direction beyond a limit position at which the display can display the display image corresponding to the position of the driver's viewpoint, that is, a display limit position, the control unit displays the display image at the display limit position, The control unit displays the display image with a higher transmittance as the position of the driver's viewpoint that has moved beyond the display limit becomes farther away from the display limit.

7. The vehicle display device according to claim 4, wherein: The acquiring unit acquires the position information of the driver's viewpoint, In the display image moving process, the control unit displays the display image in correspondence with the position of the driver's viewpoint in the vehicle width direction of the vehicle, When the position of the driver's viewpoint moves in the vehicle width direction beyond a limit position at which the display can display the display image corresponding to the position of the driver's viewpoint, that is, a display limit position, the control unit displays the display image at the display limit position, The control unit displays the display image with a higher transmittance as the position of the driver's viewpoint that has moved beyond the display limit becomes farther away from the display limit.

Images