Display system, camera monitoring system, display method, and display program

Abstract

An image acquisition unit (31) acquires an image from a camera unit (10) provided in a vehicle (1) and photographing the periphery of the vehicle (1). A display unit (21) is provided in the vehicle (1) and displays the image photographed by the camera unit (10). When it is predicted that a passenger of the vehicle (1) is about to get off, a control unit (32) switches the mode of a display system (20) to a mode that improves visibility of the passenger.

Description

Technical Field

[0001] The present disclosure relates to a display system, a camera monitoring system, a display method, and a display program mounted on a vehicle. Background Art

[0002] When a passenger opens the passenger door to get off the vehicle, there are many accidents where the passenger collides with a motorcycle or bicycle approaching from behind. Most of these collision accidents are caused by the passenger's negligence in checking safety. In existing vehicles, there is no rearview mirror for the driver, so passengers need to use their eyes to check safety when getting off the vehicle. It is expected that if rental bicycles become popular in urban areas in the future, the above collision accidents will increase further.

[0003] Among them, in recent years, camera monitoring systems (CMS) have gradually become practical, which install cameras instead of ordinary rearview mirrors, so that the images of the rear side of the vehicle captured by the cameras are displayed on a pair of left and right monitors installed in the vehicle compartment (for example, refer to Patent Document 1). In general camera monitoring systems, the installation angle of the monitor housing and the viewing angle or display range of the image displayed by the monitor are based on the driver's viewpoint and are adjusted in a way that is easy for the driver to observe. On the other hand, there is also a need to use a camera monitoring system when fellow passengers get off the vehicle.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Publication No. 2018-55075 Summary of the invention

[0007] The present disclosure has been made in view of such a situation, and an object of the present disclosure is to provide a technology for monitoring visibility when getting off a vehicle using a camera system.

[0008] Methods used to solve technical problems

[0009] In order to solve the above-mentioned technical problems, a display system of one scheme of the present invention includes: an image acquisition unit, which acquires images from a camera unit installed in a vehicle and captures the surroundings of the vehicle; a display unit, which is installed in the vehicle and displays the images captured by the camera unit; and a control unit, which switches the mode of the display system to a mode that improves the visibility of the passengers when it is predicted that a passenger of the vehicle is about to get off.

[0010] Furthermore, arbitrary combinations of the above-described constituting elements and embodiments in which the present disclosure is expressed in the form of methods, apparatuses, systems, computer programs, and the like may also be practiced as additional embodiments of the present disclosure.

[0011] Effects of the Invention

[0012] According to the present disclosure, the visibility of the camera monitoring system when getting out of the vehicle can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a diagram of a camera monitoring system for explaining an embodiment.

[0014] Figure 2 It is a diagram showing a system configuration example of a camera monitoring system according to an embodiment.

[0015] Figure 3 It is shown based on Figure 2 Flowchart of the flow of mode switching control of the mode control unit of Configuration Example 1 shown.

[0016] Figure 4 It is a diagram showing a configuration example of a display system according to an embodiment.

[0017] Figure 5 1 is a diagram showing a configuration example 1 of a display system corresponding to the vehicle getting off viewpoint mode.

[0018] Figure 6 It is a diagram showing a second configuration example of a display system corresponding to the vehicle getting off viewpoint mode.

[0019] Figure 7 This is a diagram showing the installation positions of an imaging unit and a display system of a camera monitoring system according to an embodiment as viewed from above a vehicle.

[0020] Figure 8 This is a diagram showing the camera monitoring system after the direction of the display system on the passenger seat side is adjusted.

[0021] Fig. 9 The figure shows a camera monitoring system including an imaging unit equipped with a standard lens and a wide-angle lens.

[0022] Fig.10 This is a diagram showing a camera monitoring system in which another imaging unit is provided in front of the passenger seat side of the hood.

[0023] Fig.11 FIG. 1 is a diagram showing an example of a range cut out from a frame of an image acquired by an imaging unit.

[0024] Fig.12 This is a diagram showing a second configuration example of a camera monitoring system according to an embodiment.

[0025] Fig.13 It is shown Fig.12 Flowchart of the flow of mode switching control by the mode control unit of the illustrated configuration example 2.

[0026] Fig.14 1 is a diagram showing an example of installation of a display unit for a right rear seat and a display unit for a left rear seat. DETAILED DESCRIPTION

[0027] Figure 1 This is a diagram of a camera monitoring system for explaining an embodiment. Figure 1 The camera monitoring system shown replaces the conventional optical rearview mirror with a camera monitoring system (electronic rearview mirror) including camera units 10R, 10L and display systems 20R, 20L. Figure 1 In the example shown, the imaging units 10R and 10L are provided at the positions of general optical rearview mirrors (reflecting mirrors). Figure 1 The shape of the mounting components 4R and 4L for fixing the camera units 10R and 10L to the outside of the vehicle is an example, and mounting components of any shape can be used. For example, the camera units 10R and 10L can be fixed at a position closer to the vehicle body. In this case, the mounting components 4R and 4L are miniaturized, thereby reducing air resistance and improving the fuel efficiency of the vehicle.

[0028] The right camera unit 10R captures the right rear side of the vehicle and sends the captured image to the right display system 20R. The left camera unit 10L captures the left rear side of the vehicle and sends the captured image to the left display system 20L. Figure 1 In the example shown, the right display system 20R is provided at the connection base of the right A-pillar 3R in the vehicle cabin, and the left display system 20L is provided at the connection base of the left A-pillar 3L.

[0029] In the case of an optical rearview mirror, the driver's line of sight focuses on the actual object existing behind the side. In contrast, in a conventional camera monitoring system, the driver's line of sight focuses on the screens of the display systems 20R and 20L. Therefore, when the driver switches from observing the front of the vehicle to observing the display system 20R on the right or the display system 20L on the left, the focal distance of the driver's eyes changes significantly.

[0030] Generally speaking, the driver drives while looking ahead at a distance of several tens of meters. Figure 1 In the example shown, the distance between the driver's viewpoint and the display system 20R on the right is about 50 cm to 60 cm. If the focus distance changes frequently and repeatedly, it will cause fatigue to the driver's eyes. In addition, for drivers with poor focus adjustment ability, such as the elderly, it takes time to focus on a new object after switching the line of sight. Figure 1, an example of a right-hand steering vehicle is shown, but in the case of a left-hand steering vehicle, the distance between the driver's viewpoint and the display system 20L on the left side is approximately 50 cm to 60 cm.

[0031] Therefore, in this embodiment, a far-viewpoint display is used as the display system 20R, 20L. In a far-viewpoint display, light emitted from the display in the housing is reflected by a plurality of reflection surfaces in the housing and emitted to the outside of the housing, thereby extending the visual distance from the observer to the display. Figure 1 In the example shown, the image represented by the display system 20R on the right side is viewed from the driver as a virtual image VIR at a position farther than the display system 20R. For example, the distance between the driver's viewpoint and the virtual image VIR on the right side is set in the range of 1m to 2m. Similarly, the image represented by the display system 20L on the left side is viewed from the driver as a virtual image VIL at a position farther than the display system 20L.

[0032] By using the far-view point display as the display system 20R, 20L, the change of the focal distance of the driver during driving can be reduced, and the focus adjustment can be reduced. Thus, the fatigue of the driver's eyes can be alleviated. In addition, it is also helpful to prevent accidents of elderly drivers. In addition, if the virtual images VIR, VIL of the rear image are displayed near the setting position of the conventional optical rearview mirror, it is possible to drive with the same vehicle width sense as before.

[0033] However, the telescopic display has a narrow viewing angle and needs to be viewed almost from the front. When the telescopic display is used as the display system 20R, 20L, the passenger in the front passenger seat needs to move his head to a position facing the front of the telescopic display in order to see the image displayed on the telescopic display. As described above, the passenger also needs to confirm the safety behind when getting off the vehicle, and it is also expected that the camera monitoring system is effectively used when the passenger gets off the vehicle.

[0034] Figure 2 1 is a diagram showing an example of a system configuration of a camera monitoring system according to an embodiment. The camera monitoring system includes an imaging unit 10 and a display system 20. The display system 20 includes a display unit 21 and a control unit 30. The display unit 21 includes a display 22 and an optical component 23. An example of the internal configuration of the display system 20 will be described later. The control unit 30 includes an image acquisition / processing unit 31 and a mode control unit 32. Figure 2 The camera monitoring system shown is a one-sided configuration, and both the right-side camera monitoring system and the left-side camera monitoring system are mounted on the vehicle 1. The camera unit 10 and the display system 20 are connected by a cable. Alternatively, wireless transmission may be used if the reliability of data transmission can be ensured.

[0035] The imaging unit 10 includes a solid-state imaging element and a processing unit. As the solid-state imaging element, for example, a CMOS (Complementary Metal Oxide Semiconductor) image sensor or a CCD (Charge Coupled Devices) image sensor can be used. The solid-state imaging element converts light incident through the lens into an electrical image signal and outputs it to the processing unit. The processing unit performs signal processing such as A / D conversion and noise removal on the image signal input from the solid-state imaging element. The processing unit can perform various image processing such as grayscale correction, color correction, and contour correction on the image signal after signal processing. The processing unit compresses the image signal after image processing according to a predetermined compression method, and sends the compressed image signal to the control unit 30 of the display system 20.

[0036] The control unit 30 can be implemented by the collaboration of hardware resources and software resources, or only by hardware resources. As hardware resources, CPU, ROM, RAM, GPU (Graphics Processing Unit), DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), and other LSIs can be used. As software resources, programs such as firmware can be used. Figure 2 In the example shown, the control substrate on which the control unit 30 is mounted is provided in the housing of the display system 20, but the control substrate on which the control unit 30 is mounted may be provided in another housing. That is, the display system 20 may be configured as a device in one housing, or may be configured to realize the functions of devices dispersed in a plurality of housings by combining them.

[0037] The image acquisition / processing unit 31 of the control unit 30 receives an image signal from the camera unit 10, and decompresses the received image signal in a decompression method corresponding to the above-mentioned compression method. The image acquisition / processing unit 31 cuts out an image of a range to be displayed on the display 22 from each frame of the image acquired by the camera unit 10. The image acquisition / processing unit 31 outputs the cut-out image to the display 22.

[0038] When the mode control unit 32 predicts that the passenger in the front passenger seat is about to get off the vehicle, the display mode of the display unit 21 is switched from the far viewpoint mode to the get-off viewpoint mode. The far viewpoint mode is a mode in which an image is seen farther than the physical setting position of the display unit 21, and is a mode that is easy for the driver to drive. The get-off viewpoint mode is a mode that improves the visibility when getting off the vehicle compared to the far viewpoint mode. Specific examples of the far viewpoint mode and the get-off viewpoint mode will be described later.

[0039] The mode control unit 32 predicts whether the passenger in the front passenger seat is going to get off the vehicle based on the signals from various sensors in the vehicle 1. For example, the mode control unit 32 predicts whether the passenger is going to get off the vehicle based on the detection signal from the seat belt sensor 51 for detecting whether the seat belt of the front passenger seat is buckled or unbuckled. Specifically, when the mode control unit 32 receives a detection signal from the seat belt sensor 51 indicating that the seat belt of the front passenger seat is unbuckled, it predicts that the passenger is going to get off the vehicle.

[0040] The mode control unit 32 can predict whether a fellow passenger is about to get off the vehicle based on a detection signal from the door sensor 52. For example, when the mode control unit 32 receives a detection signal indicating that the door lock is released from the door sensor 52 for detecting the state of the door lock, it can predict that the fellow passenger is about to get off the vehicle. Alternatively, the mode control unit 32 can predict that the fellow passenger is about to get off the vehicle when it receives a detection signal indicating that a hand has touched a door handle from the door sensor 52 for detecting that a hand has touched a door handle. Alternatively, the mode control unit 32 can predict that the fellow passenger is about to get off the vehicle when it receives a detection signal indicating that a door is open from the door sensor 52 for detecting the opening and closing of a door.

[0041] The mode switching control between the far viewpoint mode and the getting-off viewpoint mode does not need to be performed frequently, but is performed under predetermined conditions. For example, when there is no passenger on the front passenger seat, there is no need to perform the mode switching control. The mode control unit 32 receives a detection value from a weight sensor (not shown) disposed under the front passenger seat, and determines whether there is a passenger on the front passenger seat based on the received detection value. When there is no passenger on the front passenger seat, the mode control unit 32 does not initiate the mode switching control.

[0042] In addition, the mode control unit 32 may also determine whether a fellow passenger is sitting in the front passenger seat based on the image in the vehicle cabin captured by a camera (not shown) for capturing the interior of the vehicle cabin. Specifically, the mode control unit 32 or the image recognition engine in the camera applies a predetermined image recognition algorithm to the image in the vehicle cabin to determine whether a person is detected at the position of the front passenger seat in the image. When the image recognition engine in the camera makes the determination, the mode control unit 32 obtains the determination result from the camera.

[0043] The above-mentioned mode switching control is basically executed when the vehicle 1 is stopped. The vehicle 1 is fixed in the far view point mode while traveling. The mode control unit 32 can detect the driving state of the vehicle 1 by receiving the gear position signal from the vehicle ECU (Electronic Control Unit: electronic controller) 5. For example, when the gear is in the parking position, the mode control unit 32 determines that the vehicle 1 is stopped. When the gear is in the drive or reverse gear, the mode control unit 32 determines whether the vehicle 1 is in a temporary stop by receiving the detection value from at least one of the brake opening sensor, the accelerator opening sensor, and the vehicle speed sensor. The above-mentioned mode switching control is also executed during a temporary stop. In addition, even when the vehicle 1 is traveling slowly before stopping, the above-mentioned mode switching control can be executed when the passenger unfastens the seat belt in preparation for getting off the vehicle.

[0044] In addition, when the vehicle 1 is parked in a safe place such as a parking lot, the risk of collision with a motorcycle or bicycle approaching from the rear is low, so the above-mentioned mode switching control can be stopped. For example, the mode control unit 32 determines whether the vehicle 1 is parked in a safe place based on the detection values ​​from multiple sonars (not shown) arranged around the vehicle 1. For example, if there is a fixed object (e.g., a wall, a curb, another vehicle) on the left side of the vehicle 1, and the distance to the fixed object is less than a predetermined value, the motorcycle or bicycle cannot enter, and it is determined to be safe.

[0045] The mode control unit 32 receives an ignition signal from the vehicle ECU 5. When the driver turns on the ignition, the mode control unit 32 starts the display system 20 in the off-vehicle viewpoint mode. After the camera monitoring system is started, the advantage of the far viewpoint mode is less because it is before driving, and the advantage of the off-vehicle viewpoint mode, which is beneficial for confirming the safety of the vehicle's surroundings, is greater. When the driver starts driving the vehicle 1, the mode control unit 32 switches from the off-vehicle viewpoint mode to the far viewpoint mode.

[0046] When the driver turns off the ignition switch, the mode control unit 32 switches the display system 20 from the far viewpoint mode to the get-off viewpoint mode. After the mode control unit 32 confirms that all passengers have got off the vehicle, it turns off the camera monitoring system. For example, the mode control unit 32 determines whether all passengers have got off the vehicle based on the detection value from the weight sensor provided under each seat. In addition, it may be that when a signal indicating that the door lock is locked is received from the door sensor 52 of all the doors, it is determined that all passengers have got off the vehicle. In addition, it may be that the mode control unit 32 does not confirm that all passengers have got off the vehicle, and turns off the camera monitoring system after a specified time has passed after switching from the far viewpoint mode to the get-off viewpoint mode.

[0047] When the mode control unit 32 switches from the far viewpoint mode to the get-off viewpoint mode, it can notify the passenger in the front passenger seat to see the display system 20 on the front passenger seat side. Usually, the passenger in the front passenger seat has no habit of observing the image displayed by the display system 20 on the front passenger seat side monitored by the camera. Therefore, when getting off the vehicle, even if the rear image is displayed on the display system 20 on the front passenger seat side, the passenger usually does not see it.

[0048] For example, an LED light (not shown) is provided on the housing of the display system 20, and the mode control unit 32 can flash the LED light when switching from the far viewpoint mode to the get-off viewpoint mode. In addition, the mode control unit 32 can change the light color of the LED light to a striking color (for example, red) when switching from the far viewpoint mode to the get-off viewpoint mode.

[0049] Furthermore, for example, a speaker (not shown) may be provided in the display system 20 , and the mode control unit 32 may output a warning sound or warning information from the speaker when the mode is switched from the far viewpoint mode to the vehicle exit viewpoint mode.

[0050] In addition, when the mode control unit 32 switches from the far viewpoint mode to the get-off viewpoint mode, the image displayed by the display system 20 may include information to urge the passenger in the front passenger seat to pay attention. In addition, when the mode control unit 32 switches from the far viewpoint mode to the get-off viewpoint mode, the brightness of the image displayed by the display system 20 may also be increased.

[0051] In the above description, the mode control unit 32 can receive various signals from various sensors or ECU5 in the vehicle 1 via the vehicle network (for example, CAN (Controller Area Network) or LIN (Local Interconnect Network)). In addition, a specific sensor and the mode control unit 32 can be connected by a dedicated wiring. In addition, a system structure in which the function of the control unit 30 is integrated into the vehicle ECU5 is also possible.

[0052] Figure 3 Is based on Figure 2Flowchart of the process of mode switching control of the mode control unit 32 of the configuration example 1 shown. The mode control unit 32 determines whether there is a passenger sitting in the front passenger seat (S10). When there is no passenger (N of S10), the mode control unit 32 stops the mode switching control. When there is a passenger (Y of S10), the mode control unit 32 obtains sensor information for predicting that the passenger will get off the vehicle (S12). Based on the obtained sensor information, the mode control unit 32 predicts whether the passenger will get off the vehicle (S14). When it is not predicted that the passenger will get off the vehicle (N of S14), the mode control unit 32 selects the far viewpoint mode (S16). When it is predicted that the passenger will get off the vehicle (Y of S14), the mode control unit 32 selects the getting off viewpoint mode (S18). The above processing of steps S10 to S18 is performed during the startup of the camera monitoring system.

[0053] Figure 4 2 is a diagram showing a configuration example of a display system 20 according to an embodiment. The display system 20 includes a display 22, a first reflector 23a, a second reflector 23b, a third reflector 23c, and a control unit 30 in a housing. The first reflector 23a and the second reflector 23b are provided in an optical path between the display 22 and the third reflector 23c that reflects light emitted from the display 22 to the outside of the display system 20.

[0054] The display 22 is a display as a light source, and for example, a small liquid crystal display, an organic EL display, or a micro LED display can be used. The display 22 is arranged at the lower part of the housing with the display surface facing upward. The first reflector 23a is, for example, a plane mirror, and the reflective surface is arranged at the upper part of the housing with the reflective surface facing downward.

[0055] The second reflector 23b is composed of a planar beam splitter and has light transmittance. The second reflector 23b has the function of transmitting a part of the incident light and reflecting a part. Figure 4 In the example shown, a semi-transparent mirror with a light transmittance and a light reflectance of 50% is used. The second reflector 23b is installed in the opening of the housing and is arranged at a position adjacent to the display surface of the display 22 and the reflection surface of the first reflector 23a. The second reflector 23b is arranged so as to be incident on the first reflector 23a with respect to the incident direction (in Figure 4 , a direction parallel to the optical path A12), and an incident direction of the reflected light from the third reflector 23c (in Figure 4 In the direction parallel to the optical path A14), the normal directions of the reflecting surfaces are respectively obliquely crossed.

[0056] The third reflector 23c is, for example, a concave mirror, and is disposed in the housing at positions adjacent to the display surface of the display 22 and the reflective surface of the first reflector 23a. The third reflector 23c is disposed in the housing so that the reflective surface of the third reflector 23c faces the reflective surface of the second reflector 23b.

[0057] The first reflector 23a reflects the light emitted from the display 22 toward the second reflector 23b. The second reflector 23b reflects the reflected light from the first reflector 23a toward the third reflector 23c. That is, the light emitted from the display 22 is reflected by the first reflector 23a and the second reflector 23b in sequence, and then enters the third reflector 23c. The third reflector 23c reflects the reflected light from the second reflector 23b toward the second reflector 23b. The reflected light from the third reflector 23c passes through the second reflector 23b and is output to the outside of the display system 20.

[0058] When the display 22 displays an image, the image reflected by the third reflector 23c passes through the beam splitter constituting the second reflector 23b and is seen as a virtual image by an observer (e.g., a driver). The observer sees the images reflected by the first reflector 23a, the second reflector 23b, and the third reflector 23c. The observer appears to see an image at a position farther than the third reflector 23c in the direction of the third reflector 23c viewed through the second reflector 23b.

[0059] exist Figure 4 In the structure shown, before the light emitted from the display 22 reaches the third reflector 23c, the optical path A11 of the light from the display 22 to the first reflector 23a intersects with the optical path A13 of the light from the second reflector 23b to the third reflector 23c. In this way, the optical path A11 and the optical path A13 intersect, thereby increasing the optical path length from the display 22 to the third reflector 23c and shortening the distance from the second reflector 23b to the third reflector 23c. That is, the visual distance to the virtual image can be increased while miniaturizing the housing of the display system 20.

[0060] The control unit 30 mounted on the control substrate supplies the image signal acquired from the imaging unit 10 to the display 22. In addition, the control substrate may be provided outside the housing of the display system 20.

[0061] Below, the specific control content executed in the get-off viewpoint mode is described. As in the common camera monitoring system, when the display system 20 uses a normal monitor, the screen can be identified even if the screen of the monitor is observed from an oblique direction. For example, even if the monitor on the passenger seat side is set at an angle that is easy for the driver to see, the passenger on the passenger seat can also identify the screen of the monitor on the passenger seat side. In particular, when using a display with a wide field of view, even from the passenger on the passenger seat, the screen of the monitor on the passenger seat side can be clearly identified. Therefore, in this embodiment, if the far-viewpoint display used in the display system 20 is close to the state of the normal display, even from the passenger on the passenger seat, the screen of the display system 20 on the passenger seat side can be clearly identified. Therefore, considering that in the get-off viewpoint mode, the sight distance from the passenger on the passenger seat to the display 22 is set to be shorter than that in the far-viewpoint mode.

[0062] Figure 5 FIG. 1 is a diagram showing a configuration example 1 of a display system 20 corresponding to a vehicle exiting viewpoint mode. Figure 5 In the configuration example 1 shown, the lower surface of the housing of the display system 20 is open, and a mechanism is provided to expose the display 22 to the outside of the housing. Figure 5 In the configuration example 1 shown, when the lower surface of the housing of the display system 20 is open, the display 22 is rotated 90° downward in the direction opposite to the display surface and the observer (e.g., a fellow passenger), and is exposed to the lower side of the housing. In this state, the observer directly sees the image displayed by the display 22. As a result, the visual distance from the observer to the display 22 becomes shorter, and a large and bright image can be seen compared to the case where the image reflected by the first reflector 23a, the second reflector 23b, and the third reflector 23c is observed as a virtual image. In addition, the recognizable field of view becomes wider, and the image displayed by the display 22 can also be recognized from an inclined direction.

[0063] The display 22 exposed to the outside can also play a role as a notification function, which prompts the passenger in the front passenger seat to watch the display system 20 on the front passenger seat side. If the display 22 is exposed to the outside from the housing of the display system 20 on the front passenger seat side, the passenger's attention can be attracted to the display system 20 on the front passenger seat side.

[0064] In addition, the upper and lower opposite Figure 5 In the display system 20 shown, the upper surface of the housing of the display system 20 is open, and the display 22 is rotated 90° upward in the direction opposite to the viewer, and exposed to the upper side of the housing. Figure 5 The configuration of the display system 20 shown is an example, and any configuration may be adopted as long as the viewing distance between the observer and the display 22 can be adjusted.

[0065] Figure 6 FIG. 2 is a diagram showing a second configuration example of the display system 20 corresponding to the vehicle exit viewpoint mode. Figure 6 In the configuration example 2 shown, the display 22 is erected in the housing in a direction in which the display surface is opposed to the second reflector 23b. Figure 6 In the example shown, the display 22 may also be raised to a position parallel to the second reflector 23b and rotated 90° upward. In addition, the display 22 may also be rotated to a position parallel to the second reflector 23b. Thus, the visual distance from the observer to the display 22 is shortened. In addition, the recognizable viewing angle is also expanded.

[0066] Furthermore, the visual distance from the observer to the display 22 can be shortened by switching the internal mechanism other than the display 22. For example, the first reflector 23a is moved to the position of the optical path A14, and the angle of the first reflector 23a is adjusted so that the light emitted from the display 22 is reflected toward the second reflector 23b. Thus, the visual distance from the observer to the display 22 is shortened by reducing the number of reflections.

[0067] Figure 7 1 is a diagram showing the installation positions of the imaging unit 10 and the display system 20 of the camera monitoring system according to the embodiment as viewed from above the vehicle 1. Figure 1 As shown in , the right camera unit 10R and the left camera unit 10L are set at the same position as the setting position of a general optical reflector. The right display system 20R is set at the connecting root of the right A-pillar in the vehicle compartment, and the left display system 20L is set at the connecting root of the left A-pillar. The right display system 20R and the left display system 20L are adjusted to an angle that is easy to observe from the driver's viewpoint EP1. In this state, it is difficult for the passenger in the front passenger seat to observe the image displayed by the display system 20L on the left. Therefore, in the get-off viewpoint mode, the direction of the display system 20L on the front passenger seat side is adjusted to an angle corresponding to the viewpoint position of the passenger sitting in the front passenger seat.

[0068] Figure 8 2 is a diagram showing the camera monitoring system after adjusting the orientation of the display system 20L on the passenger seat side. Figure 8 As shown, in the exit viewpoint mode, the mode control unit 32 can rotate the left display system 20L toward the passenger seat by a predetermined angle. Thus, the display surface of the left display system 20L can be directly opposite to the passenger sitting in the passenger seat, and the visibility of the image displayed by the left display system 20L from the passenger's viewpoint EP2 can be improved.

[0069] Preferably, in the getting-off viewpoint mode, a wider-angle image is displayed on the display system 20L on the passenger seat side so that the passenger who is about to get off the vehicle can confirm the safety of the rear in a wider range. In order to display a wide-angle image, it is effective to shoot a wide-angle image. For example, the camera unit 10L on the passenger seat side is equipped with a standard lens and a wide-angle lens, and in the getting-off viewpoint mode, the display system 20L on the passenger seat side displays the image shot through the wide-angle lens.

[0070] Fig. 9 FIG. 1 is a diagram showing a camera monitoring system including an imaging unit 10L equipped with a standard lens and a wide-angle lens. Fig. 9 , the first viewing angle range Vs of the camera unit 10L on the passenger seat side represents the viewing angle range that can be photographed via a standard lens, and the second viewing angle range Vw represents the viewing angle range that can be photographed via a wide-angle lens. In the get-off viewpoint mode, the mode control unit 32 rotates the camera unit 10L on the passenger seat side at a predetermined angle toward the outside of the vehicle 1, and uses the wide-angle lens to photograph the camera unit 10L on the passenger seat side.

[0071] In order to allow a fellow passenger who is about to get off the vehicle to check the safety of the rear in a wider range, it is also effective to display the image captured by the imaging unit 10 provided at a position in front of the vehicle 1 .

[0072] Fig.10 1 is a diagram showing a camera monitoring system in which another camera unit 10La is provided in front of the front passenger seat side of the hood. Fig.10 In the vehicle exiting viewpoint mode, the mode control unit 32 causes the camera unit 10La disposed in the front to capture the rear image of the vehicle 1, and transmits the captured image to the display system 20L of the passenger seat. Thus, the passengers who are exiting the vehicle can see a wider range of images, and the safety when exiting the vehicle is improved.

[0073] In the getting-off viewpoint mode, the image acquisition / processing unit 31 may enlarge the range captured from each frame of the image acquired by the imaging unit 10L so that a fellow passenger who is about to get off the vehicle can check the safety behind in a wider range.

[0074] Fig.11: is a diagram showing an example of a range captured from the frame of an image acquired by the imaging unit 10L. The range of the frame F1 of the image acquired by the imaging unit 10L by the image acquisition / processing unit 31 may be a range corresponding to the imaging range of the solid-state imaging element, or a range narrower than the imaging range. In the far viewpoint mode, the image acquisition / processing unit 31 captures an image of a prescribed capture range Rc from the range of the frame F1 of the acquired image, adjusts the size of the captured image, and outputs it to the display 22. In the get-off viewpoint mode, the image acquisition / processing unit 31 captures an image of a range wider than the capture range Rc, adjusts the size of the captured image, and outputs it to the display 22. In addition, in the get-off viewpoint mode, the image acquisition / processing unit 31 may output the image acquired by the imaging unit 10L to the display 22 as it is. Fig.11 In the example shown, by enlarging the clipped range Rc, the bicycle O1 approaching from behind is entirely included in the image.

[0075] Furthermore, in the getting-off viewpoint mode, the image acquisition / processing unit 31 may shift the interception range Rc toward the outside of the vehicle 1. Furthermore, in the getting-off viewpoint mode, the image acquisition / processing unit 31 may shift the interception range Rc toward the bottom of the vehicle 1. Furthermore, in the getting-off viewpoint mode, the image acquisition / processing unit 31 may shift the interception range Rc toward the outside and bottom of the vehicle 1. In either case, the blind spot of the image seen by the fellow passengers who are about to get off the vehicle can be reduced, and the safety when getting off the vehicle can be improved.

[0076] When the mode control unit 32 switches from the far viewpoint mode to the get-off viewpoint mode, it performs at least one of the above-mentioned control of adjusting the orientation of the display system 20, the control of shortening the sight distance between the passenger and the display 22, the control of switching the display image to a wide angle, and the control of changing the clipping range Rc. All or part of these controls may be performed.

[0077] Fig.12 FIG. 2 is a diagram showing a second configuration example of a camera monitoring system according to an embodiment of the present invention. Figure 2 The display system 20 shown in the figure has an audio output unit 40 added thereto, and an image analysis unit 33 added thereto in the control unit 30. The audio output unit 40 includes a speaker, and the image analysis unit 33 includes an image recognition engine.

[0078] The image analysis unit 33 applies a predetermined image recognition algorithm to the image acquired from the camera unit 10 to detect an object (e.g., another vehicle, a bicycle, or a motorcycle) that exists behind the vehicle 1. When the image analysis unit 33 detects an object that exists behind the vehicle 1 from the image acquired from the camera unit 10, it estimates the distance between the vehicle 1 and the object that exists behind the vehicle 1. When the estimated distance is less than a predetermined value, the mode control unit 32 causes the sound output unit 40 to output an alarm sound or alarm information for notifying the driver of the existence of the object and urging the driver to pay attention. This can improve driving safety.

[0079] Fig.13 It is shown Fig.12 Flowchart of the process of mode switching control performed by the mode control unit 32 of the configuration example 2 shown. The mode control unit 32 determines whether there is a fellow passenger sitting in the front passenger seat (S10). When there is no fellow passenger (N of S10), the mode control unit 32 stops the mode switching control. When there is a fellow passenger (Y of S10), the mode control unit 32 obtains sensor information for predicting that the fellow passenger is about to get off the vehicle (S12). The image analysis unit 33 detects the presence or absence of an object approaching from the rear of the vehicle 1 in the image obtained by the camera unit 10 (S13). The mode control unit 32 predicts whether the fellow passenger is about to get off the vehicle based on the obtained sensor information (S14). When getting off is not predicted (N of S14), the mode control unit 32 selects the far view point mode (S16).

[0080] When getting off the vehicle is predicted (Y in S14), the mode control unit 32 determines whether there is an object approaching the vehicle 1 from the rear based on the analysis results of the image analysis unit 33 (S15). Whether the object is approaching the vehicle 1 can be determined based on the motion vector of the object. When there is no object approaching from the rear (N in S15), the mode control unit 32 selects the far viewpoint mode (S16). When there is an object approaching from the rear (Y in S15), the mode control unit 32 causes the sound output unit 40 to output an alarm sound or alarm information for notifying the passenger in the front passenger seat of the approach of the object and prompting attention (S17). The mode control unit 32 selects the getting off viewpoint mode (S18). The above-mentioned processing of steps S10 to S18 is performed during the startup of the camera monitoring system.

[0081] Thus, in the second configuration example of the camera monitoring system, when there is no object approaching the vehicle 1 from behind, even when it is predicted that the passenger in the front passenger seat is about to get off, the mode of getting off is not switched, and the mode of far viewpoint is maintained. When there is no object approaching from behind, the risk of collision with a motorcycle or bicycle approaching from behind is low, so it is allowed to omit the switching to the mode of getting off.

[0082] As described above, according to this embodiment, when a passenger in the front passenger seat wants to get off the vehicle, the display system 20 is switched from the far viewpoint mode to the get-off viewpoint mode, thereby improving the visibility of the passenger. This can improve the safety of the passenger when getting off the vehicle.

[0083] The present disclosure has been described above based on the embodiments. The embodiments are for illustration only, and those skilled in the art should understand that various modifications can be formed for the combination of their components or processing steps, and such modifications also fall within the scope of the present disclosure.

[0084] In the above embodiment, the visibility of the display system 20 on the passenger seat side is improved when the passenger gets off the vehicle, thereby improving the safety when getting off the vehicle. In this regard, the present disclosure can also be applied to improve the safety of the passenger in the rear seat when getting off the vehicle.

[0085] Fig.14 21RR and the left rear seat display unit 21RL are shown in FIG. 21RR and the left rear seat display unit 21RL are shown in FIG. 21RL. Fig.14 In the illustrated example, as RSE, a display unit 21RR for the right rear seat is provided behind the backrest of the driver's seat, and a display unit 21RL for the left rear seat is provided behind the backrest of the passenger seat.

[0086] When the mode control unit 32 predicts that the passenger in the right rear seat is about to get off the vehicle, the display unit 21RR for the right rear seat displays the image captured by the right camera unit 10R. In addition, when the mode control unit 32 predicts that the passenger in the left rear seat is about to get off the vehicle, the display unit 21RL for the left rear seat displays the image captured by the left camera unit 10L. This can improve the safety of the passengers in the rear seats when getting off the vehicle.

[0087] In the above embodiment, the control of switching the display system 20 on the passenger seat side from the far viewpoint mode to the get-off viewpoint mode when the passenger on the passenger seat is about to get off the vehicle is described. In this case, the display system 20 on the driver's seat side can also be switched from the far viewpoint mode to the get-off viewpoint mode when the driver is about to get off the vehicle. Figure 8 The control of the orientation of the display system 20 shown is not targeted, but the control of shortening the sight distance from the driver to the display 22, the control of switching the display image to a wide angle, and the control of changing the clipping range Rc are targeted.

[0088] In the above-mentioned embodiment, an example of using a far-viewpoint display as the display system 20 is described. This can also be achieved by using a HUD (Head-up Display) as the display system 20. When a combiner-type HUD is used, the visibility of the virtual image observed from the passenger or the driver can be adjusted by adjusting the position and angle of the combiner. For example, in the get-off viewpoint mode, the mode control unit 32 can improve the visibility of the virtual image seen from the passenger or the driver by making the position of the combiner close to the passenger or the driver. In addition, in the get-off viewpoint mode, the mode control unit 32 can make the combiner on the passenger seat side face the passenger on the passenger seat by rotating the combiner on the passenger seat side by a predetermined angle toward the passenger seat, thereby improving the visibility of the virtual image observed from the passenger. In the case of using a HUD as the display system 20, the mode control unit 32 can also perform control to switch the display image to a wide angle, and control to change the interception range Rc.

[0089] In the above-mentioned embodiment, an example of using a far-viewing point display as the display system 20 is described. This does not exclude the case of using a normal monitor as the display system 20. Even if a normal monitor is used, the mode control unit 32 can perform control to adjust the orientation of the display system 20, control to switch the display image to a wide angle, and control to change the interception range Rc when a fellow passenger is about to get off the vehicle. In addition, the mode control unit 32 can perform control to switch the display image to a wide angle, and control to change the interception range Rc when the driver is about to get off the vehicle.

[0090] In addition, the implementation mode can also be determined by the following items.

[0091] [Project 1]

[0092] A display system (20) comprising:

[0093] An image acquisition unit (31) acquires an image from a camera unit (10) provided on the vehicle (1) and capturing images of the periphery of the vehicle (1);

[0094] A display unit (21) is provided on the vehicle (1) and displays the image captured by the camera unit (10);

[0095] The control unit (32) switches the mode of the display system (20) to a mode that improves visibility for the passenger when predicting that the passenger of the vehicle (1) is about to get off.

[0096] This can improve the safety of passengers when getting off the vehicle.

[0097] [Project 2]

[0098] The display system (20) according to item 1,

[0099] The display unit (21) has a display (22) and a plurality of reflection surfaces (23) in the housing.

[0100] Light emitted from the display (22) is reflected by the plurality of reflection surfaces (23) and emitted to the outside of the housing, thereby extending the visual distance from the passenger to the display (22).

[0101] This can reduce the change in the driver's focal distance while driving.

[0102] [Item 3]

[0103] The display system (20) according to item 2,

[0104] When predicting that the passenger is about to get off the vehicle, the control unit (32) switches to a mode in which the sight distance between the passenger and the display (22) is short as a mode for improving visibility.

[0105] This can improve visibility for passengers getting off the vehicle.

[0106] [Item 4]

[0107] The display system (20) according to item 3,

[0108] When predicting that the passenger is about to get off the vehicle, the control unit (32) causes the display (22) in the housing to be exposed outside the housing.

[0109] Thus, the sight distance from the passenger to the display (22) can be shortened. In addition, the visual angle can be expanded.

[0110] [Item 5]

[0111] The display system (20) according to item 3,

[0112] When predicting that the passenger is about to get off the vehicle, the control unit (32) moves the arrangement of the display (22) in the housing so that the visual distance from the passenger to the display (22) becomes shorter.

[0113] Thus, the visual distance from the passenger to the display (22) can be shortened.

[0114] [Item 6]

[0115] The display system (20) according to any one of items 1 to 5,

[0116] When predicting that the passenger is about to get off the vehicle, the control unit (32) switches the image displayed by the display unit (21) to a wide-angle image.

[0117] This can improve visibility for passengers getting off the vehicle.

[0118] [Item 7]

[0119] The display system (20) according to any one of items 1 to 6,

[0120] The display unit (21) of the display system (20) is respectively arranged on the driver's seat side and the passenger seat side.

[0121] The orientation of the display system (20L) on the passenger seat side is adjusted to an angle corresponding to the viewpoint position of the driver sitting in the driver's seat,

[0122] The passenger is a fellow passenger sitting in the front passenger seat of the vehicle (1),

[0123] When predicting that the passenger is about to get off the vehicle, the control unit (32) adjusts the orientation of the display system (20L) on the passenger seat side to an angle corresponding to the viewpoint position of the passenger sitting on the passenger seat.

[0124] This can improve the visibility of a fellow passenger getting off the vehicle from the front passenger seat.

[0125] [Item 8]

[0126] The display system (20) according to any one of items 1 to 7,

[0127] The control unit (32) predicts that the passenger is about to get off the vehicle when receiving a detection signal indicating that the seat belt worn by the passenger has been removed.

[0128] Thus, the passengers' getting off the bus can be accurately predicted.

[0129] [Item 9]

[0130] The display system (20) according to any one of items 1 to 8,

[0131] It also includes an image analysis unit (33) for analyzing the image captured by the camera unit (10).

[0132] The control unit (32) determines whether there is an object approaching the vehicle (1) from the rear based on the analysis result of the image, and when there is no object approaching the vehicle (1) from the rear, the mode of the display system (20) is not switched even if it is predicted that the passenger is about to get off the vehicle.

[0133] Thereby, safety can be ensured while reducing the frequency of mode switching.

[0134] [Item 10]

[0135] The display system (20) according to item 1,

[0136] The passenger is a fellow passenger sitting in the rear seat of the vehicle (1),

[0137] The display unit (21) is a display unit (21) for rear seats.

[0138] When predicting that the passenger is about to get off the vehicle, the control unit (32) displays the image captured by the camera unit (10) on the display unit (21) for the rear seat.

[0139] This can improve the safety of passengers getting off the rear seats.

[0140] [Item 11]

[0141] A camera monitoring system comprising:

[0142] A camera unit (10) is provided on the vehicle (1) and captures the surroundings of the vehicle (1);

[0143] a display unit (21) provided on the vehicle (1) and displaying the image captured by the camera unit (10); and

[0144] When predicting that a passenger of the vehicle (1) is about to get off, the control unit (32) switches the mode of the display system (20) to a mode that improves visibility for the passenger.

[0145] This can improve the safety of passengers when getting off the vehicle.

[0146] [Item 12]

[0147] A display method, comprising:

[0148] A step of acquiring an image from a camera unit (10) disposed on a vehicle (1) and capturing the periphery of the vehicle (1);

[0149] A step of displaying the image captured by the camera unit (10) on a display unit (21) provided in the vehicle (1); and

[0150] When it is predicted that a passenger of the vehicle (1) gets off, the mode of the display system (20) is switched to a mode that improves visibility of the passenger.

[0151] This can improve the safety of passengers when getting off the vehicle.

[0152] [Item 13]

[0153] A display program that enables a computer to execute

[0154] Processing of acquiring images from a camera unit (10) provided on a vehicle (1) for photographing the periphery of the vehicle (1);

[0155] Processing of displaying the image captured by the camera unit (10) on a display unit (21) provided in the vehicle (1); and

[0156] When it is predicted that a passenger of the vehicle (1) is about to get off, a mode of a display system (20) is switched to a mode that improves visibility for the passenger.

[0157] This can improve the safety of passengers when getting off the vehicle.

[0158] Industrial Applicability

[0159] The present disclosure can be utilized in a camera monitoring system that displays an image of the rear side of a vehicle captured by a camera on a display.

[0160] Description of Reference Numerals

[0161] 1 vehicle, 3 A-pillar, 4 mounting component, 5 vehicle ECU, 10 camera unit, 20 display system, 21 display unit, 22 display, 23 optical component, 23a first reflector, 23b second reflector, 23c third reflector, 30 control unit, 31 image acquisition / processing unit, 32 mode control unit, 33 image analysis unit, 40 sound output unit, 50 vehicle ECU, 51 seat belt sensor, 52 door sensor, EP1 driver viewpoint, EP2 passenger viewpoint, VI virtual image.

Claims

1. A display system comprising: An image acquisition unit acquires an image from a camera unit provided in the vehicle and capturing the surroundings of the vehicle; A display unit is provided in the vehicle and displays the image captured by the camera unit; and The control unit switches the mode of the display system to a mode that improves visibility of the passenger when it is predicted that the passenger of the vehicle is about to get off the vehicle. The display unit has a display and a plurality of reflective surfaces in the housing. The light emitted from the display is reflected by the plurality of reflection surfaces and emitted to the outside of the housing, thereby extending the sight distance from the passenger to the display. The control unit exposes the display in the housing to the outside of the housing when it is predicted that the passenger will get off the vehicle.

2. The display system according to claim 1, When it is predicted that the passenger is about to get off the vehicle, the control unit switches the mode to a mode in which the visual distance from the passenger to the display is short as a mode for improving the visibility.

3. The display system according to claim 1, The control unit switches the image displayed by the display unit to a wide-angle image when it is predicted that the passenger is about to get off the vehicle.

4. The display system according to claim 1, The display unit of the display system is respectively arranged on the driver's seat side and the passenger seat side. The orientation of the display system on the passenger seat side is adjusted to an angle corresponding to the viewpoint position of the driver sitting in the driver's seat. The passenger is a fellow passenger sitting in the front passenger seat of the vehicle, When it is predicted that the passenger is about to get off the vehicle, the control unit adjusts the orientation of the display system on the passenger seat side to an angle corresponding to a viewpoint position of a fellow passenger sitting on the passenger seat.

5. The display system according to claim 1, The control unit predicts that the passenger is about to get off the vehicle when receiving a detection signal indicating that the seat belt being worn by the passenger has been removed.

6. The display system according to claim 1, It also includes an image analysis unit, which analyzes the image captured by the camera unit. The control unit determines whether there is an object approaching the vehicle from behind based on the analysis result of the image, and when there is no object approaching the vehicle from behind, the mode of the display system is not switched even when it is predicted that the passenger is about to get off the vehicle.

7. The display system according to claim 1, The passenger is a fellow passenger sitting in the rear seat of the vehicle, The display unit is a display unit for rear seats, The control unit displays the image captured by the camera unit on the display unit for the rear seat when it is predicted that the passenger is about to get off the vehicle.

8. A display system comprising: An image acquisition unit acquires an image from a camera unit provided in the vehicle and capturing the surroundings of the vehicle; A display unit is provided in the vehicle and displays the image captured by the camera unit; and The control unit switches the mode of the display system to a mode that improves visibility of the passenger when it is predicted that the passenger of the vehicle is about to get off the vehicle. The display unit has a display and a plurality of reflective surfaces in the housing. The light emitted from the display is reflected by the plurality of reflection surfaces and emitted to the outside of the housing, thereby extending the sight distance from the passenger to the display. The display unit includes a reflector mounted on the opening of the housing, wherein the reflector transmits a portion of incident light and reflects another portion of incident light. The plurality of reflective surfaces include a reflective surface of the reflector, When it is predicted that the passenger is about to get off the vehicle, the control unit rotates the orientation of the display in the housing so that the display surface of the display faces a direction opposite to the reflective mirror.

9. The display system according to claim 8, When it is predicted that the passenger is about to get off the vehicle, the control unit switches the mode to a mode in which the visual distance from the passenger to the display is short as a mode for improving the visibility.

10. The display system according to claim 8, The control unit switches the image displayed by the display unit to a wide-angle image when it is predicted that the passenger is about to get off the vehicle.

11. The display system according to claim 8, The display unit of the display system is respectively arranged on the driver's seat side and the passenger seat side. The orientation of the display system on the passenger seat side is adjusted to an angle corresponding to the viewpoint position of the driver sitting in the driver's seat. The passenger is a fellow passenger sitting in the front passenger seat of the vehicle, When it is predicted that the passenger is about to get off the vehicle, the control unit adjusts the orientation of the display system on the passenger seat side to an angle corresponding to a viewpoint position of a fellow passenger sitting on the passenger seat.

12. The display system according to claim 8, The control unit predicts that the passenger is about to get off the vehicle when receiving a detection signal indicating that the seat belt being worn by the passenger has been removed.

13. The display system according to claim 8, It also includes an image analysis unit, which analyzes the image captured by the camera unit. The control unit determines whether there is an object approaching the vehicle from behind based on the analysis result of the image, and when there is no object approaching the vehicle from behind, the mode of the display system is not switched even when it is predicted that the passenger is about to get off the vehicle.

14. A camera monitoring system comprising: A camera unit is provided in the vehicle and captures the surroundings of the vehicle; A display unit is provided in the vehicle and displays the image captured by the camera unit; as well as The control unit switches the mode of the display system to a mode that improves visibility of the passenger when predicting that the passenger of the vehicle is about to get off the vehicle. The display unit has a display and a plurality of reflective surfaces in the housing. The light emitted from the display is reflected by the plurality of reflection surfaces and emitted to the outside of the housing, thereby extending the sight distance from the passenger to the display. The control unit exposes the display in the housing to the outside of the housing when predicting that the passenger is about to get off the vehicle.

15. A camera monitoring system comprising: A camera unit is provided in the vehicle and captures the surroundings of the vehicle; A display unit is provided in the vehicle and displays the image captured by the camera unit; as well as The control unit switches the mode of the display system to a mode that improves visibility of the passenger when predicting that the passenger of the vehicle is about to get off the vehicle. The display unit has a display and a plurality of reflective surfaces in the housing. The light emitted from the display is reflected by the plurality of reflection surfaces and emitted to the outside of the housing, thereby extending the sight distance from the passenger to the display. The display unit includes a reflector mounted on the opening of the housing, wherein the reflector transmits a portion of incident light and reflects another portion of incident light. The plurality of reflective surfaces include a reflective surface of the reflector, When predicting that the passenger is about to get off the vehicle, the control unit rotates the orientation of the display in the housing so that the display surface of the display faces a direction opposite to the reflective mirror.

16. A display method, comprising: A step of acquiring an image from a camera unit provided in the vehicle and capturing the periphery of the vehicle; A step of displaying the image captured by the camera unit on a display unit provided in the vehicle; and When it is predicted that a passenger of the vehicle is about to get off, the mode of the display system is switched to a mode that improves visibility for the passenger, The display unit has a display and a plurality of reflective surfaces in the housing. The light emitted from the display is reflected by the plurality of reflection surfaces and emitted to the outside of the housing, thereby extending the sight distance from the passenger to the display. In the step of switching the mode of the display system to a mode that improves visibility for the passenger, when it is predicted that the passenger of the vehicle will get off, the display in the housing is exposed to the outside of the housing.

17. A display method, comprising: A step of acquiring an image from a camera unit provided in the vehicle and capturing the periphery of the vehicle; A step of displaying the image captured by the camera unit on a display unit provided in the vehicle; and When it is predicted that a passenger of the vehicle is about to get off, the mode of the display system is switched to a mode that improves visibility for the passenger, The display unit has a display and a plurality of reflective surfaces in the housing. The light emitted from the display is reflected by the plurality of reflection surfaces and emitted to the outside of the housing, thereby extending the sight distance from the passenger to the display. The display unit includes a reflector mounted on the opening of the housing, wherein the reflector transmits a portion of incident light and reflects another portion of incident light. The plurality of reflective surfaces include a reflective surface of the reflector, In the step of switching the mode of the display system to a mode that improves visibility for the passenger, when it is predicted that a passenger of the vehicle is about to get off, the orientation of the display is rotated within the housing so that the display surface of the display faces a direction opposite to the reflector.

18. A computer-readable storage medium storing a display program, wherein the display program causes a computer to execute the display method according to claim 16 or 17.

19. A computer program product comprising a display program, the display program causing a computer to execute the display method according to claim 16 or 17.

Images