Video display system

Abstract

To provide a video system capable of improving mountability of a display device by allowing laterally long arrangement and longitudinally long arrangement of the display device for displaying the rear video of a motorcycle.SOLUTION: A video display system includes an imaging device which images a rear side of the motorcycle, the display device which is attached to the motorcycle, so as to be positioned in front of a rider, configured so that a direction of the display device is changed and then, the display device can be attached or the direction of the display device can be changed in such a state that the display device is attached, and displays video on the basis of video data acquired by the imaging device, and a control device which controls the display device, so as to cut out an area determined according to an attachment state of the display device from an imaging range of imaged video imaged by the imaging device and display the video corresponding to the cut out area.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to a video display system.

Background Art

[0002] Conventionally, there has been known a technology that displays an image captured behind a two-wheeled motor vehicle on a display device to provide visual information of the area behind the two-wheeled motor vehicle to a rider. For example, Patent Document 1 discloses a rear image display device that displays a partial area of a captured image obtained by capturing an area behind a two-wheeled motor vehicle on a display device arranged near a handlebar.

Prior Art Literature

Patent Literature

[0003]

Patent Document 1

Summary of the Invention

Problem to be Solved by the Invention

[0004] However, in the case of motorcycles such as two-wheeled motor vehicles and three-wheeled motor vehicles, the installation space for the display device is limited compared to four-wheeled vehicles. For this reason, constraints such as being only able to arrange the display device in a portrait orientation or only being able to arrange it in a landscape orientation may occur.

[0005] The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a video display system that allows both landscape orientation arrangement and portrait orientation arrangement of a display device that displays a rear image of a motorcycle, and can improve the mountability of the display device.

Means for Solving the Problem

[0006] A video display system according to a first aspect of the present disclosure includes: an imaging device for imaging the area behind a motorcycle; a display device mounted on the motorcycle so as to be positioned in front of the rider, which can be mounted in a different orientation or can be mounted in a different orientation; which displays video data acquired from the imaging device; and a control device that controls the display device to cut out a region determined according to the mounting state of the display device from the imaging range of the image captured by the imaging device, and to display video corresponding to the cut-out region.

[0007] A video display system according to a second aspect of the present disclosure is, in the video display system according to a first aspect of the present disclosure, wherein the area is a horizontal area when the mounting state of the display device is horizontally oriented, and a vertical area when the mounting state of the display device is vertically oriented.

[0008] A third aspect of the present disclosure is a video display system in the first or second aspect of the present disclosure, wherein the display device includes a detection mechanism for detecting the orientation of the display device, and the control device cuts out the region determined according to the mounting state of the display device based on the detection result of the detection mechanism.

[0009] A video display system according to a fourth aspect of the present disclosure, in any one of the first to third aspects of the present disclosure, the control device cuts out the region determined according to the mounting state of the display device, such that the magnification of the image displayed on the display device remains constant, regardless of whether the display device is mounted horizontally or vertically.

[0010] A video display system according to a fifth aspect of the present disclosure, in any one of the video display systems according to the first to fourth aspects of the present disclosure, controls the display device such that, when the display device is mounted in either a horizontal or vertical orientation, it displays an additional screen together with the image extracted from the captured image, and when the display device is mounted in the other orientation, it displays the image extracted from the captured image without displaying the additional screen.

[0011] In the sixth aspect of the present disclosure, when an additional screen is displayed together with the rear view image in any one of the first to fifth aspects of the present disclosure, the control device controls the display device such that the image extracted from the captured image is positioned on the central side of the vehicle body relative to the additional screen. [Effects of the Invention]

[0012] According to the video display system of the first aspect of this disclosure, the display device for displaying rear-view video of the motorcycle can be mounted on the motorcycle in either a horizontal or vertical orientation, thereby improving the mountability of the display device.

[0013] According to the video display system of the second aspect of this disclosure, it is possible to display an image suitable for the mounting state of the display device.

[0014] According to the video display system of the third aspect of this disclosure, the orientation of the display device can be automatically determined.

[0015] According to the video display system of the fourth aspect of this disclosure, regardless of the mounting state of the display device, the range that the rider wants to see can be displayed at a magnification that makes it easy to grasp the sense of distance.

[0016] According to the video display system of the fifth aspect of this disclosure, it is possible to determine whether or not to display an additional screen depending on the mounting state of the display device.

[0017] According to the video display system of the sixth aspect of this disclosure, an additional screen can be displayed along with the video while reducing the amount of left-right offset of the rear video. [Brief explanation of the drawing]

[0018] [Figure 1] This is a schematic diagram showing an example of the configuration of a video display system according to the first embodiment of the present invention. [Figure 2] (A) to (D) are schematic diagrams showing an example of the arrangement of the display device. [Figure 3] It is a schematic diagram illustrating an example of a bracket for a display device. [Figure 4] It is a block diagram illustrating an example of the electrical configuration of a video display system according to an embodiment of the present invention. [Figure 5] It is a functional block diagram illustrating an example of the functional configuration of a control device. [Figure 6] It is a flowchart illustrating an example of the processing flow of a video display program according to the first embodiment of the present invention. [Figure 7] It is a flowchart illustrating an example of the flow of "display video data generation processing". [Figure 8] (A) to (C) are schematic diagrams for explaining the processing of video data according to the first embodiment of the present invention. [Figure 9] It is a schematic diagram illustrating an example of a setting screen used in a video display system according to the second embodiment of the present invention. [Figure 10] It is a schematic diagram illustrating an example of a display video that displays an additional screen and a rear video. [Figure 11] It is a flowchart illustrating an example of the flow of "display video data generation processing" according to the second embodiment of the present invention. [Figure 12] It is a schematic diagram illustrating an example of the layout of an additional screen when the display device is in a landscape orientation. [Figure 13] It is a schematic diagram illustrating another example of the layout of an additional screen when the display device is in a portrait orientation. [Figure 14] It is a schematic diagram illustrating an example of a display device and a bracket in a video display system according to the third embodiment of the present invention. [Figure 15] (A) to (D) are explanatory diagrams of a method for detecting the mounting state of a display device according to the third embodiment of the present invention. Mode for Carrying Out the Invention

[0019] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0020] <First Embodiment> The video display system disclosed herein is a video display system for motorcycles, which displays a video of the area behind the vehicle to the rider. Here, "motorcycle" refers to a two-wheeled, three-wheeled, or four-wheeled vehicle that a rider straddles and rides. Motorcycles include those powered by an engine and those powered by an electric motor. Examples of motorcycles include motorcycles, scooters, and electric scooters. The following description will focus on the case where the motorcycle is a two-wheeled vehicle.

[0021] (Configuration of the video display system) First, let me explain the configuration of the video display system. Figure 1 is a schematic diagram showing an example of the configuration of a video display system. As shown in Figure 1, the video display system 10 includes an imaging device 12, a display device 14, a control device 16, and an operating device 18. In Figure 1, one of each device is shown, but multiple imaging devices 12, display devices 14, and operating devices 18 may be provided.

[0022] The imaging device 12 is a device that captures images of the area behind the vehicle body 11. As the imaging device 12, for example, a digital video camera equipped with an image sensor such as a CCD image sensor or a CMOS image sensor can be used.

[0023] The display device 14 is a device that displays images of the area behind the vehicle to the rider. The display unit 40 of the display device 14 (see Figure 4) can be, for example, a liquid crystal display, an organic EL display, or a touch panel display with a touch panel superimposed on these displays. The display device 14 is installed in front of the rider in a position easily visible to the rider.

[0024] The display device 14 is an aftermarket display device that is different from the display installed on the instrument panel of the vehicle body 11. For example, as shown in Figure 2, if a meter display for displaying vehicle information is located in the center of the instrument panel, the display device 14 can be placed near the meter display. When placing the display device 14, making the distance from the rider to the instruments (e.g., the meter display) and the distance from the rider to the display device 14 approximately the same makes it easier for the rider to focus.

[0025] In Figure 2(A), the display device 14 is mounted horizontally to the left of the meter display, and in Figure 2(B), the display device 14 is mounted vertically to the left of the meter display. In Figure 2(C), the display device 14 is mounted horizontally to the right of the meter display, and in Figure 2(D), the display device 14 is mounted vertically to the right of the meter display. Here, "right side" and "left side" refer to the right and left sides relative to the direction of vehicle travel, and correspond to the right and left sides as seen from the rider's perspective.

[0026] The display device 14 is mounted on the vehicle body 11. The display device 14 may be mounted in a way that allows its orientation to be changed, for example, so that its orientation is fixed when mounted. Alternatively, the display device 14 may be mounted in a way that allows its orientation to be changed even after mounting.

[0027] For example, by mounting the display device 14 via a bracket 15 as shown in Figure 3, the orientation of the display device 14 can be changed even after installation. The bracket 15 comprises a flat plate-shaped holding portion 100 for holding the display device 14, a fixing portion 102 for fixing the display device 14 to the holding portion 100, a cylindrical support portion 104 for supporting the holding portion 100, and an attachment portion 106 for fixing the support portion 104. The attachment portion 106 can be attached, for example, to a handle or the like.

[0028] A circular hole is provided in the center of the holding portion 100. The end of the support portion 104 is fitted into this circular hole. As a result, the holding portion 100 is rotatably supported by the support portion 104. The end face of the support portion 104 is exposed from the holding surface of the holding portion 100. The display device 14 is attached to the vehicle body 11 together with the bracket 15 by the mounting portion 106. With such a bracket 15, even after the display device 14 is attached to the vehicle body 11, the orientation of the display device 14 can be changed by rotating the holding portion 100.

[0029] The control device 16 is the control function unit of an electronic control unit (ECU) provided for controlling the display device 14. The control device 16 is installed inside the vehicle body 11, for example, embedded inside the seat.

[0030] The operating device 18 is a device for the rider to input controls. The operating device 18 can be a handlebar switch or the like, mounted near the handlebars. With a handlebar switch, controls can be input even while riding. The operating device 18 can be mounted, for example, on the left grip.

[0031] (Electrical configuration of the video display system) Next, the electrical configuration of the video display system 10 will be described. Figure 4 is a block diagram showing an example of the electrical configuration of the video display system 10. The control device 16 includes a CPU (Central Processing Unit) 30, ROM (Read Only Memory) 32, RAM (Random Access Memory) 34, and non-volatile memory 36. The ROM 32 or non-volatile memory 36 pre-stores a "video display program," which will be described later. The CPU 30 reads the pre-stored program and executes it using the RAM 34 as the work area.

[0032] The control device 16 is connected to the imaging device 12, the display device 14, and the operating device 18 by wired or wireless connections so that data can be exchanged with the control device 16. In addition, various sensors 20, the communication unit 22, and the storage unit 24 are also connected to the control device 16 by wired or wireless connections so that data can be exchanged with the control device 16. The control device 16 exchanges information with each unit and controls each unit.

[0033] Sensor 20 includes a tilt sensor and an acceleration sensor for detecting the tilt of the vehicle body 11. Communication unit 22 is an interface for communicating with external devices 28. Storage unit 24 is an external storage device such as an HDD (Hard Disk Drive) or a memory card (e.g., an SD card). The storage unit 24 stores image data of various screens, which will be described later. The control device 16 is housed in a case together with the communication unit 22 and the storage unit 24 and is installed inside the vehicle body 11 as an ECU.

[0034] The display device 14 includes a display unit 40, an operation unit 42, a sensor 44, and a speaker 46. The display unit 40 is a display for displaying images based on video data. The operation unit 42 consists of switches and buttons for inputting operations. The sensor 44 is, for example, an accelerometer. An accelerometer is an example of a "detection mechanism for detecting the orientation of the display device." The speaker 46 is a device that outputs sound based on audio data.

[0035] The configuration described above is just one example; other components can be added, and some components can be omitted. For example, the video display system 10 may be equipped with a microphone 26 for collecting sounds from around the vehicle. The microphone 26 may be, for example, a microphone built into the imaging device 12 as shown in the figure.

[0036] Here, we will briefly explain the operation of the video display system 10. The imaging device 12 captures an image of the area behind the vehicle, and the obtained image data is output to the control device 16. The control device 16 processes the obtained image data according to the mounting status of the display device 14 (for example, orientation and left / right orientation) and outputs it to the display device 14. The display device 14 displays an image based on the obtained image data.

[0037] The mounting status of the display device 14 may be automatically determined based on detection data from the accelerometer of the display device 14, or it may be set manually by the lidar. Operation input by the lidar can be performed via the operating device 18, via the operating section 42 of the display device 14, or via the operation screen displayed on the display section 40 of the display device 14.

[0038] (Functional configuration of the control device) Next, the functional configuration of the control device 16 will be described. Figure 5 is a functional block diagram showing an example of the functional configuration of the control device 16. The control device 16 includes an installation status acquisition unit 60, an image capture data acquisition unit 62, a display image data generation unit 64, and a display control unit 66. Each of these functional units is realized when the "image display program," which will be described later, is executed by the CPU 30 of the control device 16.

[0039] (Video display program) Next, I will explain the video display program. Figure 6 is a flowchart showing an example of the processing flow of the "video display program". The video display program is executed by the CPU 30 of the control device 16 and starts when an instruction is given to display a video. The instruction to display a video may be given, for example, by operating the operating device 18. Here, except for step S108, the operation of the CPU 30 will be described as the operation of each functional unit shown in Figure 5.

[0040] First, in step S100, the mounting status acquisition unit 60 acquires the mounting status based on the detection data from the sensor 20 (accelerometer) of the display device 14. Since the detection data from the sensor 20 does not allow for determination of whether the display device 14 is located on the left or right side of the meter display, it is assumed here that the left or right orientation is already known. Therefore, the detection data from the acceleration sensor automatically determines whether the display device 14 is positioned vertically or horizontally.

[0041] Next, in step S102, the image data acquisition unit 62 acquires image data from the imaging device 12. Here, the unprocessed image data obtained from the imaging device 12 is referred to as "image data".

[0042] Next, in step S104, the display video data generation unit 64 performs the "display video data generation process". Here, the video data to be displayed on the display device 14 is referred to as "display video data".

[0043] As shown in Figure 7, in the display video data generation process, the display video data generation unit 64 processes the captured video data in step S200 to extract a portion of the imaging range as the display range, according to the mounting state of the display device. In the subsequent step S202, it processes the obtained video data to horizontally invert the image of the display range, thereby generating the display video data. The reason for displaying the inverted image is that it is easier for the rider to grasp the situation behind them if the image is in the same orientation as the mirror image reflected in the optical mirror used for rearward confirmation. Alternatively, the order of steps S200 and S202 may be reversed, and the extraction of a portion of the range may be performed after the image has been inverted.

[0044] Figure 8(A) shows the captured image 70 based on the captured image data. As shown in Figure 8(B), when the display device 14 is mounted in a horizontal orientation, a horizontally elongated region 72 is cut out from the imaging range of the captured image 70 to create the display range. The imaging device 12 captures a wide area behind the vehicle, but what the rider wants to see is the blind spot directly behind the rider. The captured image is captured so that the blind spot is in the center of the imaging range. Therefore, a region 72 is cut out to create the display range while preserving the central part of the imaging range. By cutting out and displaying a portion of the region 72, the area the rider wants to see can be displayed in a larger size.

[0045] On the other hand, as shown in Figure 8(C), when the display device 14 is mounted in a vertical orientation, a vertically shaped region 74 is cut out from the imaging range of the captured image 70 to create the display range. By cutting out and displaying a portion of the region 74, the area that the LiDAR user wants to see can be displayed in a larger size. Although region 74 has a different shape from region 72, it is cut out in the same way as region 72 to preserve the central part of the imaging range. Furthermore, it is preferable that region 72 and region 74 are cut out so that the displayed image has approximately the same magnification. For example, this magnification can be set so that the displayed image is the same size as the mirror image of the optical mirror, making it easier for the LiDAR user to grasp the sense of distance.

[0046] In the example above, the display area was cropped to maintain the center of the imaging range. However, it is also possible to detect objects in blind spots (such as following vehicles) and crop the display area so that these objects are displayed in the center. Furthermore, other image processing such as rotation correction, distortion correction, color correction, and noise reduction can be performed during the display video data generation process.

[0047] Returning to the explanation of Figure 6, in step S106, the display control unit 56 outputs the display video data to the display device 14, causing the display device 14 to display an image based on the display video data.

[0048] Next, in step S108, the CPU 30 determines whether or not to terminate the video display. For example, if the operation of the control device 18 instructs the CPU 30 to terminate the video display, the CPU 30 makes a positive determination in step S108 and terminates the routine. For example, if the rider instructs the CPU 30 to terminate the video display while riding, the video display is terminated and the routine is also terminated. On the other hand, if the CPU 30 does not intend to terminate the video display, the CPU 30 makes a negative determination in step S108 and returns to step S100. Therefore, the processing from steps S100 to S108 is repeatedly executed until the CPU 30 instructs the CPU 30 to terminate the video display.

[0049] As described above, the video display system according to the first embodiment can provide various effects as shown below.

[0050] (1) The imaging device captures a wide area behind the vehicle, but the image of the area the rider wants to see is cropped from the captured area and displayed on a display device positioned in front of the rider while riding, so the area the rider wants to see is displayed larger and visibility is improved. In addition, the rider will be able to check the blind spot directly behind them, making it easier to check behind them. Furthermore, because it is easier to check behind them, the rider's head movements can be reduced, which is expected to improve safety.

[0051] (2) The display area is cropped from the imaging range according to the mounting state of the display device, but regardless of the mounting state, the display area is cropped in such a way that the central part of the imaging range is retained. As a result, the blind spot directly behind the rider that the rider wants to see is displayed, and whether the display device is mounted in a horizontal or vertical orientation, an image suitable for rearward confirmation can be displayed.

[0052] <Second Embodiment> In the first embodiment, an example was described in which only the rear view is displayed on the display device, but in the second embodiment, an example is described in which an additional screen is displayed along with the rear view. Also, in the first embodiment, the mounting state of the display device was determined automatically, but in the second embodiment, the rider manually sets the mounting state of the display device.

[0053] Examples of additional screens include screens that display specific information, such as navigation screens, and screens that accept user input, such as menu screens. Here, a menu screen is the screen that is initially displayed to select items to operate or set. It is also conceivable that the video display system 10 (see Figure 4) may be linked with an external information processing device such as a smartphone. In such cases, screens of various application programs, such as map apps and calling apps, may be displayed as additional screens.

[0054] In the second embodiment, the video displayed on the display device 14, the flow of the "display video data generation process" executed as a subroutine of the video display program, and the method for setting the mounting status of the display device differ from those of the first embodiment. For this reason, the parts that are the same as in the first embodiment will be omitted from the explanation, and only the differences will be explained.

[0055] (Manual setting of installation status) The mounting status of the display device 14 may be set, for example, by operating the setting screen 84 shown in Figure 9, which is displayed on the display unit 40 of the display device 14. Selecting "Mounting Settings" on the menu screen 80 will take you to the setting screen 84. The setting screen 84 includes a selection unit 86 for selecting the mounting status, various instruction buttons 88, etc. For example, as shown in Figure 2(C), if the display device 14 is to be mounted horizontally to the right of the meter display, select "Right Horizontal Layout" and press the setting button to complete the setting of the mounting status.

[0056] (Layout of additional screens) The additional screen may be arranged by dividing the display area 90 of the display device 14 into two sections, as shown in Figure 10, and displaying a video display screen 92 for displaying video and an additional screen 94 such as a menu screen side by side, either vertically or horizontally. In this embodiment, the arrangement layout of the additional screen 94 is determined according to the mounting state of the display device.

[0057] (Process for generating display video data) Next, with reference to Figure 11, the flow of the "display video data generation process" according to the second embodiment will be described. This process is executed in step S104 of the video display program shown in Figure 6.

[0058] First, in step S300, the display video data generation unit 64 determines the arrangement layout of the additional screen according to the mounting status of the display device.

[0059] In the example shown in Figure 12, the display device 14 is mounted in a horizontal orientation, and the rider's hands 96 (right hand 96R and left hand 96L) are shown together. For example, if the display device 14 is mounted on the left side of the central panel, the additional screen will be located on the left side closer to the grip (area A enclosed by a solid line). Also, if the display device 14 is mounted on the right side of the central panel, the additional screen will be located on the right side closer to the grip (area B enclosed by a solid line).

[0060] Since the imaging device 12 is located in the center of the vehicle, placing the display device 14 in the center of the vehicle would provide the rider with images that feel natural. However, in reality, as shown in the figure, the display device 14 is positioned slightly outward from the center of the vehicle. By placing the additional screen closer to the grip and the image display area towards the center of the vehicle, the amount of left-right offset between the imaging device 12 and the displayed image can be reduced.

[0061] Furthermore, if the additional screen is an operation screen, positioning it closer to the grip reduces the amount of hand movement required by the rider, improving operability. Conversely, if the additional screen is positioned far from the grip, the image may be obscured by the rider's hand during operation.

[0062] In the example shown in Figure 13, the display device 14 is mounted in a vertical orientation. In this case as well, for the same reasons as in the horizontal orientation, the additional screen is positioned on the lower side closer to the grip (area C enclosed by a solid line).

[0063] Now, let's return to the explanation of Figure 11. Next, in step S302, the display video data generation unit 64 processes the captured video data to extract a portion of the imaging range as the display range, according to the mounting state of the display device and the shape of the video display area. In the following step S304, the obtained video data is processed to horizontally invert the image of the display range. Note that the order of steps S302 and S304 may be reversed.

[0064] The method of cropping the display area to preserve the central portion of the imaging range is the same as in the first embodiment. In the second embodiment, since the shape of the video display area changes as a result of displaying the additional screen, the display area is cropped to preserve the central portion of the imaging range according to the shape of the video display area. Also, as in the first embodiment, an object in a blind spot (such as a following vehicle) may be detected, and the display area may be cropped so that the object is displayed in the center.

[0065] Next, in step S306, the video data after the inversion process and the image data of the additional screen are combined to generate display video data, and the routine ends. As shown in Figure 10, the video display screen 92 and the additional screen 95 are displayed side by side, that is, the video data and the image data of the additional screen are combined so that a composite image of the video within the display range and the additional screen is displayed.

[0066] In the above description, an example was given in which the additional screen 94 is displayed regardless of whether the display device 14 is mounted in a vertical or horizontal orientation. However, for example, when the display device 14 is mounted in a horizontal orientation, the video display screen 92 and the additional screen 94 may be displayed, and when the display device 14 is mounted in a vertical orientation, only the video display screen 92 may be displayed without the additional screen 94. Conversely, the video display screen 92 and the additional screen 94 may be displayed only when the display device 14 is mounted in a vertical orientation.

[0067] Furthermore, although the above describes an example in which the video display screen 92 and the additional screen 94 are displayed side by side in the display area 90 of the display device 14, the video may be displayed across the entire display area 90 of the display device 14, and the additional screen 94 may be superimposed on the video. In this case as well, the arrangement layout of the additional screen 94, that is, whether the additional screen 94 is superimposed on the video (above / below or left / right), is determined according to the mounting state of the display device.

[0068] As described above, the video display system according to the second embodiment provides the same effects as the first embodiment, and in addition, it can display additional screens along with the video while displaying video suitable for rearward confirmation. Furthermore, the mounting state of the display device can be set manually. When set manually, the mounting state of the display device can be set in detail, including whether it is on the left or right side. Moreover, the mounting state of the display device can be set even if the display device does not have an acceleration sensor or the like.

[0069] <Third Embodiment> In the first embodiment, an example was described in which the mounting state of the display device is automatically determined based on detection data from the accelerometer of the display device. In the third embodiment, an example is described in which the display device and bracket are equipped with a mechanism for detecting the mounting state of the display device. This mechanism is also an example of a "detection mechanism for detecting the orientation of the display device".

[0070] In the third embodiment, the method for detecting the mounting status of the display device differs from that of the first embodiment. Therefore, the parts that are the same as in the first embodiment will be omitted from the explanation, and only the differences will be explained.

[0071] As shown in Figure 14, the bracket 15A has two protrusions 108 at the end of the support portion 104 that is exposed through the circular hole of the holding portion 100, and is configured so that once the display device 14 is fixed to the holding portion 100, the rotation of the holding portion 100 is prohibited. Therefore, the display device 14 cannot be rotated after installation. Except for these two points, the bracket 15A has the same configuration as the bracket 15 shown in Figure 3. The same reference numerals are used for the same components and their descriptions are omitted. In the third embodiment, four switch buttons 110A to 110D are provided on the back surface of the display device 14.

[0072] In this detection mechanism, when the display device 14 is attached to the bracket 15A, two of the four switch buttons 110A to 110D located on the back of the display device 14 are pressed by the two protrusions 108. The switch buttons that are pressed change depending on the mounting state of the display device 14, so the mounting state of the display device 14 can be detected by determining which switch button is pressed.

[0073] Furthermore, since the back surface of the display device 14 needs to be in contact with the holding surface of the holding portion 100 of the bracket 15A, it is preferable that the wiring of the display device 14 be routed from the side of the display device 14 toward the center of the vehicle body.

[0074] As shown in Figure 15, a triangular mark is placed on the switch button that is pressed by the two protrusions 108. Here, we focus on switch buttons 110A and 110B, defining the state where the switch button is pressed as "on" and the state where the switch button is not pressed as "off".

[0075] In Figure 15(A), the display device 14 is positioned horizontally to the left of the meter display (see Figure 2(A)). In this case, both switch buttons 110A and 110B are in the "on" state. In Figure 15(B), the display device 14 is positioned vertically to the left of the meter display (see Figure 2(B)). In this case, switch button 110A is in the "off" state, and switch button 110B is in the "on" state.

[0076] In Figure 15(C), the display device 14 is positioned horizontally to the right of the meter display (see Figure 2(C)). In this case, both switch buttons 110A and 110B are in the "off" state. In Figure 15(D), the display device 14 is positioned vertically to the right of the meter display (see Figure 2(D)). In this case, switch button 110A is in the "on" state, and switch button 110B is in the "off" state.

[0077] In other words, the control device 16 can acquire information on the on / off state of the two switch buttons 110A and 110B, and determine which of the four mounting states it is based on the acquired information. That is, the mounting state is uniquely determined by how the display device is mounted.

[0078] Note that the combination of the number of protrusions 108 and the number of switch buttons 110 is not limited to the examples given. For example, if there is only one protrusion 108, four mounting states can be distinguished from the on / off states of each of the four switch buttons 110A to 110D.

[0079] As described above, the video display system according to the third embodiment provides the same effects as the first embodiment, and also allows for the mechanical detection of the mounting state of the display device when it is installed. For example, even if the display device does not have an acceleration sensor or the like, the mounting state of the display device can be automatically determined.

[0080] <Variation> It goes without saying that the configuration of the video display system described in each of the above embodiments is merely an example, and its configuration may be modified without departing from the spirit of the present invention.

[0081] In the above embodiment, examples were described in which the display device is installed to the right or left of the meter display on the instrument panel. However, the display device can be installed in a position that is easily visible to the rider in front of the rider, regardless of whether or not there is a meter display. For example, it may be installed on the handlebars, on the mirror mounting part, on top of the fuel tank, inside the cowl, or above the meter display.

[0082] In the above embodiment, an example of providing a dedicated display device was described, but a portable information processing device such as a smartphone or tablet may be used as the display device. In this case, the portable information processing device performs various processes in cooperation with the ECU, which is the control unit, using a dedicated application program that is installed on it. For example, a smartphone can be wirelessly connected to the communication unit 22 via Bluetooth® and display images on the screen based on image data stored in the storage unit 24 (see Figure 4). [Explanation of Symbols]

[0083] 10...Video display system, 11...Vehicle body, 12...Imaging device, 14...Display device, 16...Control device, 18...Operating device

Claims

1. An imaging device that captures images of the rear of a motorcycle, A display device that is mounted on the motorcycle so as to be positioned in front of the rider, and is either mounted in a changeable orientation or can be mounted in a changeable orientation, and displays images based on image data acquired from the imaging device, A control device that controls the display device to cut out a region determined according to the mounting state of the display device from the imaging range of the image captured by the imaging device, and to display an image corresponding to the cut-out region. A detection mechanism for detecting the orientation of the display device after the display device has been installed, Equipped with, The control device extracts the region determined according to the mounting state of the display device based on the detection result of the detection mechanism. Video display system.

2. The video display system according to claim 1, wherein the region is a horizontal region when the display device is mounted in a horizontal orientation, and a vertical region when the display device is mounted in a vertical orientation.

3. The video display system according to claim 1, wherein the detection mechanism comprises a plurality of switches provided on the back surface of the display device and at least one protrusion provided on a bracket that holds the display device, and when the display device is attached to the bracket, the orientation of the display device is detected by pressing the switch opposite the at least one protrusion according to the mounting state of the display device.

4. The video display system according to claim 1, wherein the control device cuts out the region determined according to the mounting state of the display device so that the magnification of the image displayed on the display device remains constant, regardless of whether the display device is mounted horizontally or vertically.

5. The video display system according to claim 1, wherein the control device controls the display device to display an additional screen that accepts operation input along with the image extracted from the captured image when the display device is mounted in either a horizontal or vertical orientation, and to display the image extracted from the captured image without displaying the additional screen when the display device is mounted in the other orientation.

6. The aforementioned display device is positioned to the right or left of the fixed display unit located in the center of the vehicle body. When displaying an additional screen that accepts operation input along with the rear video, The video display system according to claim 1, wherein the control device controls the display device such that the image extracted from the captured image is positioned on the central side of the vehicle body relative to the additional screen.

Images