Patent Publication Number: US-11657741-B2

Title: Vehicular display control device, vehicular display system, vehicle, display method, and non-transitory computer-readable medium

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims priority under 35 USC 119 from Japanese Patent Application No. 2021-151951, filed on Sep. 17, 2021, the disclosure of which is incorporated by reference herein. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a vehicular display control device, a vehicular display system, a vehicle, a display method, and a non-transitory computer-readable medium storing a program. 
     Related Art 
     Japanese Patent Application Laid-Open (JP-A) No. 2021-75157 discloses a configuration in which operation switches are provided on the left and right of a steering wheel. In JP-A No. 2021-75157, images of the operation switches are displayed on a display screen and different functions are allocated to the respective operation switches. 
     In JP-A No. 2021-75157, images of both the left and right operation switches (operation regions) are displayed on the display screen, and so a large display region needs to be secured. However, if an image of the operation switches on one side alone were to be displayed, it would be difficult to discern at a glance which operation switches were being displayed, and so there is room for improvement from the perspective of improving occupant usability. 
     SUMMARY 
     The present disclosure provides a vehicular display control device, a vehicular display system, a vehicle, a display method, and a non-transitory computer-readable medium storing a program that enable occupant usability to be improved in configurations capable of displaying an image of an operation region. 
     A first aspect of the present disclosure is a vehicular display control device including: memory; and a processor coupled to the memory, wherein the processor is configured to: detect when a right-side operation region provided on a right side of a steering wheel has been operated; detect when a left-side operation region provided on a left side of the steering wheel has been operated; in a case in which operation of the right-side operation region has been detected, display a right-side image corresponding to the right-side operation region in a right-side area of a display region set in front of a driving seat; and in a case in which operation of the left-side operation region has been detected, display a left-side image corresponding to the left-side operation region in a left-side area of the display region. 
     In the vehicular display control device according to the first aspect, the right-side image corresponding to the right-side operation region is displayed in the right-side area of the display region set in front of the driving seat in cases the right-side operation region provided on the right side of the steering wheel has been operated. Similarly, the left-side image corresponding to the left-side operation region is displayed in the left-side area of the display region in cases the left-side operation region provided on the left side of the steering wheel has been operated. This enables a wide area of the display region to be secured compared to cases in which both the right-side image and the left-side image are always displayed on the display region. 
     Moreover, since the right-side image is displayed in the right-side area of the display region whereas the left-side image is displayed in the left-side area of the display region, an occupant can intuitively ascertain which operation region the displayed image corresponds to out of the right-side operation region or the left-side operation region. Note that here, the “right side” indicates the right side in a state facing a direction of progress of the vehicle, and the “left side” indicates the left side in a state facing the direction of progress of the vehicle. 
     In a second aspect of the present disclosure, in the first aspect, the processor may be configured to: always display a central image indicating a vehicle state in a central area of the display region; and display the right-side image further toward the right side than the central image, and display the left-side image further toward the left side than the central image. 
     In the vehicular display control device according to the second aspect, the occupant may even more easily ascertain which operation region the displayed image corresponds to out of the right-side operation region or the left-side operation region. 
     In a third aspect of the present disclosure, in the second aspect, the processor may be configured to move the central image toward the left side when displaying the right-side image, and move the central image toward the right side when displaying the left-side image. 
     In the vehicular display control device according to the third aspect, since the central image is moved, the corresponding right-side image or left-side image may be displayed in a large size, even in cases in which the display region is relatively small. 
     In a fourth aspect of the present disclosure, in any one of the above aspects, the processor may be configured to: display the right-side image as an animation so as to move from a lower-right side end of the display region; and display the left-side image as an animation so as to move from a lower-left side end of the display region. 
     In the vehicular display control device according to the fourth aspect, since the display is an animation, the occupant may intuitively ascertain that the image (the right-side image or left-side image) displayed on the display region corresponds to an operation region (the left-side operation region or right-side operation region) provided on the steering wheel. 
     In a fifth aspect of the present disclosure, in any one of the above aspects, the processor may be configured to: display information relating to driving assistance in the right-side image and display information relating to onboard equipment in the left-side image; and display the right-side image in cases in which operation of both the right-side operation region and the left-side operation region has been detected. 
     In the vehicular display control device according to the fifth aspect, the right-side image including the driving assistance-related information is displayed in cases in which operation of both the right-side operation region and the left-side operation region has been detected. This enables the occupant to prioritize checking information relating to driving assistance. 
     In a sixth aspect of the present disclosure, in any one of the above aspects, the processor nay be configured to: display a right-side suggestion image that is selectable using the right-side operation region in the right-side area of the display region; and display a left-side suggestion image that is selectable using the left-side operation region in the left-side area of the display region. 
     In the vehicular display control device according to the sixth aspect, in cases in which a suggestion from a navigation system or the like is displayed using the right-side suggestion image or the left-side suggestion image, this suggestion is displayed at a position corresponding to the pertinent operation region, thereby enabling the occupant to intuitively ascertain the position of the operation region they should operate. 
     In a seventh aspect of the present disclosure, in any one of the above aspects, the processor may be configured to display the right-side image and the left-side image in the display region set on a windshield glass using a head-up display device installed to a vehicle. 
     In the vehicular display control device according to the seventh aspect, the contents of the corresponding right-side image or left-side image can be checked in a state in which the occupant is directing their gaze toward the front while driving. 
     An eighth aspect of the present disclosure is a vehicular display system including: the vehicular display control device of any one of above aspects; and an image display device configured to perform display in the display region. 
     A ninth aspect of the present disclosure is a vehicle including the vehicular display system of the eighth aspect. 
     A tenth aspect of the present disclosure is a display method including: detecting when a right-side operation region provided on a right side of a steering wheel has been operated; detecting when a left-side operation region provided on a left side of the steering wheel has been operated; in a case in which operation of the right-side operation region has been detected, display a right-side image corresponding to the right-side operation region in a right-side area of a display region set in front of a driving seat; and in a case in which operation of the left-side operation region has been detected, display a left-side image corresponding to the left-side operation region in a left-side area of the display region. 
     An eleventh aspect of the present disclosure is a non-transitory computer-readable medium storing a program for causing a computer to execute processing including: detecting when a right-side operation region provided on a right side of a steering wheel has been operated; detecting when a left-side operation region provided on a left side of the steering wheel has been operated; in a case in which operation of the right-side operation region has been detected, display a right-side image corresponding to the right-side operation region in a right-side area of a display region set in front of a driving seat; and in a case in which operation of the left-side operation region has been detected, display a left-side image corresponding to the left-side operation region in a left-side area of the display region. 
     In the above aspects, the vehicular display control device, the vehicular display system, the vehicle, the display method, and the non-transitory computer-readable medium storing a program according to the present disclosure enable occupant usability to be improved in configurations capable of displaying an image of an operation region. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Exemplary embodiments will be described in detail based on the following figures, wherein: 
         FIG.  1    is a schematic view of a front section inside a vehicle cabin of a vehicle applied with a vehicular display system according to an exemplary embodiment, as viewed from a vehicle rear side; 
         FIG.  2    is a block diagram illustrating a hardware configuration of a vehicular display system according to an exemplary embodiment; 
         FIG.  3    is a block diagram illustrating a functional configuration of a vehicular display control device according to an exemplary embodiment; 
         FIG.  4    is a diagram illustrating an example of a display on a display region in an exemplary embodiment, in a state in which right-side operation switches and left-side operation switches have not been touched; 
         FIG.  5    is an example of a display following on from the state in  FIG.  4   , illustrating a state in which a right-side operation switch has been touched; 
         FIG.  6    is an example of a display following on from the state in  FIG.  4   , illustrating a state in which a left-side operation switch has been touched; 
         FIG.  7    is an example of a display illustrating a state in which a left-side suggestion image is being displayed; and 
         FIG.  8    is a flowchart illustrating an example of a flow of display processing of an exemplary embodiment. 
     
    
    
     DETAILED DESCRIPTION 
     Explanation follows regarding a vehicular display system S according to an exemplary embodiment, with reference to the drawings. 
     As illustrated in  FIG.  1   , an instrument panel  14  is provided to a front section inside a vehicle cabin of a vehicle  12 . The instrument panel  14  extends along a vehicle width direction, and a steering wheel  16  is provided on a vehicle right side of the instrument panel  14 . Namely, in the present exemplary embodiment as an example, the vehicle is a right-hand drive vehicle in which the steering wheel  16  is provided on the right side, and a driving seat is set on the vehicle right side. A first right-side operation switch  34 R, a second right-side operation switch  36 R, a right-side function switchover switch  38 R, a first left-side operation switch  34 L, a second left-side operation switch  36 L, and a left-side function switchover switch  38 L are provided on the steering wheel  16 . Note that the first right-side operation switch  34 R, the second right-side operation switch  36 R, and the right-side function switchover switch  38 R correspond to a right-side operation region of the present disclosure. The first left-side operation switch  34 L, the second left-side operation switch  36 L, and the left-side function switchover switch  38 L correspond to a left-side operation region of the present disclosure. These switches are described later. 
     A windshield glass  17  is provided at a front end section of the instrument panel  14 . The windshield glass  17  extends along a vehicle vertical direction and the vehicle width direction so as to partition between the vehicle cabin interior and vehicle cabin exterior. 
     A vehicle right side end portion of the windshield glass  17  is fixed to a front pillar  18  on the vehicle right side. The front pillar  18  extends along the vehicle vertical direction. The windshield glass  17  is fixed to a vehicle width direction inside end portion of the front pillar  18 . A front end portion of a front side glass  19  is fixed to a vehicle width direction outside end portion of the front pillar  18 . Note that a vehicle left side end portion of the windshield glass  17  is fixed to a non-illustrated front pillar on a vehicle left side. 
     An image display region V 1  is provided on the instrument panel  14 . The display region V 1  is a meter display positioned on the vehicle right side of the instrument panel  14 , and displays predetermined information through a first image display device  40  (see  FIG.  2   ). The first image display device  40  is connected to various meter equipment installed to the vehicle  12 , and is provided at a position that enters the field of view of a driver in a state in which their gaze is directed toward the vehicle front. 
     An image display region V 2  is provided to the windshield glass  17 . The display region V 2  is set at a vehicle upper side of the display region V 1 , and is configured by a projection surface that a second image display device  42  (see  FIG.  2   ) projects onto. Note that the second image display device  42  is a head-up display device provided at a vehicle front side of the instrument panel  14 . Images are projected onto the display region V 2  of the windshield glass  17  from the second image display device  42  configured by the head-up display device. Namely, the display region V 2  configures a part of the windshield glass  17  that serves as the projection surface of the head-up display device. 
     Note that the steering wheel  16  includes a substantially circular ring-shaped rim  16 A. A hub  16 B configuring a central portion is provided at an inner circumferential side of the rim  16 A. The right side of the rim  16 A and the hub  16 B are coupled together by a spoke  16 C, and the left side of the rim  16 A and the hub  16 B are similarly coupled together by a spoke  16 C. The first right-side operation switch  34 R, the second right-side operation switch  36 R, and the right-side function switchover switch  38 R are provided on the right-side spoke  16 C. The first left-side operation switch  34 L, the second left-side operation switch  36 L, and the left-side function switchover switch  38 L are provided on the left-side spoke  16 C. 
     The first right-side operation switch  34 R is formed in a substantially rectangular shape, and is disposed at an upper-right portion of the right-side spoke  16 C. The first right-side operation switch  34 R is configured capable of receiving input on four sides, these being upper, lower, left, and right sides, and functions are allocated to each side. 
     Note that in the present exemplary embodiment as an example, a non-illustrated static sensor is installed to the first right-side operation switch  34 R, such that a touched function is selected when an occupant touches the first right-side operation switch  34 R. If the occupant then presses the first right-side operation switch  34 R in a state in which the function has been selected, the selected function is executed. Similar static sensors are installed to the second right-side operation switch  36 R, the right-side function switchover switch  38 R, the first left-side operation switch  34 L, the second left-side operation switch  36 L, and the left-side function switchover switch  38 L. 
     The second right-side operation switch  36 R is formed in a substantially elongated rectangular shape with its length direction along the vertical direction, and is disposed at the left side of the first right-side operation switch  34 R. The second right-side operation switch  36 R is configured capable of receiving input on two sides, these being upper and lower sides, and functions are allocated to each side. 
     The right-side function switchover switch  38 R is formed in a substantially elongated rectangular shape with its length direction along a left-right direction, and is disposed at the lower side of the first right-side operation switch  34 R and the second right-side operation switch  36 R. The right-side function switchover switch  38 R is a switch for switching over functions. Specifically, by operating the right-side function switchover switch  38 R, the functions allocated to the first right-side operation switch  34 R and those allocated to the second right-side operation switch  36 R are switched over. In the present exemplary embodiment as an example, two functions are allocated to each of these operation switches, and these functions are switched over whenever the right-side function switchover switch  38 R is operated. 
     The first left-side operation switch  34 L is formed in a substantially rectangular shape that has left-right symmetry to the first right-side operation switch  34 R about a vertical center line of the steering wheel  16 , and is disposed at an upper-left portion of the left-side spoke  16 C. The first left-side operation switch  34 L is configured capable of receiving input on four sides, these being upper, lower, left, and right sides, and functions are allocated to each side. 
     The second left-side operation switch  36 L is formed in a substantially elongated rectangular shape that has left-right symmetry to the second right-side operation switch  36 R about a vertical center line of the steering wheel  16 , and is disposed at the right side of the first left-side operation switch  34 L. The second left-side operation switch  36 L is configured capable of receiving input on two sides, these being upper and lower sides, and functions are allocated to each side. 
     The left-side function switchover switch  38 L is formed in a substantially elongated rectangular shape that has left-right symmetry to the right-side function switchover switch  38 R about a vertical center line of the steering wheel  16 , and is disposed at the lower side of the first left-side operation switch  34 L and the second left-side operation switch  36 L. The left-side function switchover switch  38 L is a switch for switching over functions. Specifically, by operating the left-side function switchover switch  38 L, the functions allocated to the first left-side operation switch  34 L and those allocated to the second left-side operation switch  36 L are switched over. 
     Note that a vehicular display control device  10  is provided to the vehicle  12 . The vehicular display control device  10  of the present exemplary embodiment is for example a display electronic control unit (ECU) that performs various controls. 
     As illustrated in  FIG.  2   , the vehicular display system S is configured including the vehicular display control device  10 . 
     The vehicular display control device  10  is configured including a central processing unit (CPU; processor)  20 , read only memory (ROM)  22 , random access memory (RAM)  24 , storage  26 , a communication interface (communication I/F)  28 , and an input/output interface (input/output I/F)  30 . The respective configuration elements are connected so as to be capable of communicating with one another through an internal bus  32 . 
     The CPU  20  is a central processing unit that executes various programs and controls respective sections. Namely, the CPU  20  reads a program from the ROM  22  or the storage  26 , and executes the program using the RAM  24  as a workspace. The CPU  20  also controls the respective configuration elements and performs various arithmetic processing according to the programs recorded in the ROM  22  or the storage  26 . 
     The ROM  22  holds various programs and various data. The RAM  24  acts as a workspace to temporarily store programs or data. The storage  26  is configured by a hard disk drive (HDD) or a solid state drive (SSD), and is a non-transitory recording medium that holds various programs including an operating system, and various data. In the present exemplary embodiment, programs such as a program for performing display processing are held in the ROM  22  or the storage  26 . 
     The communication I/F  28  is an interface enabling the vehicular display control device  10  to communicate with an external server and other equipment, and a standard such as a Controller Area Network (CAN), Ethernet (registered trademark), Long Term Evolution (LTE), Fiber Distributed Data Interface (FDDI), or Wi-Fi (registered trademark) may be employed therefor. 
     The first right-side operation switch  34 R, the second right-side operation switch  36 R, the right-side function switchover switch  38 R, the first left-side operation switch  34 L, the second left-side operation switch  36 L, the left-side function switchover switch  38 L, the first image display device  40 , and the second image display device  42  are electrically connected to the input/output interface  30 . 
     The first image display device  40  is a device for performing a predetermined display on the display region V 1  of the meter display. The second image display device  42  is a device for performing a predetermined display on the display region V 2  of the head-up display. 
     The vehicular display control device  10  is electrically connected to a driving assistance ECU  44 . As an example, the driving assistance ECU  44  of the present exemplary embodiment performs control such as active cruise control (ACC) and lane tracing assist (LTA). The driving assistance ECU  44  is thereby configured so as to be capable of acquiring signals from various sensors that detect the surroundings of the vehicle  12 . 
     The vehicular display control device  10  implements various functionality using the above-described hardware resources. Explanation follows regarding functional configuration implemented by the vehicular display control device  10 , with reference to  FIG.  3   . 
     As illustrated in  FIG.  3   , the vehicular display control device  10  is configured including as functional configuration a right-side operation detection section  50 , a left-side operation detection section  52 , an operation image display section  54 , and a suggestion image display section  56 . Note that the respective functional configuration is implemented by the CPU  20  reading and executing a program stored in the ROM  22  or the storage  26 . 
     The right-side operation detection section  50  detects when the right-side operation region has been operated. Specifically, the right-side operation detection section  50  detects when any switch out of the first right-side operation switch  34 R, the second right-side operation switch  36 R, or the right-side function switchover switch  38 R has been operated. Note that here “operation” includes not only an action by the occupant to press a switch, but also includes an action by the occupant to touch a switch. Thus, for example, the right-side operation detection section  50  detects when the occupant has touched the first right-side operation switch  34 R using a signal from the corresponding static sensor. The right-side operation detection section  50  also detects when the occupant has pressed the first right-side operation switch  34 R using a signal or the like from a corresponding pressure sensor. 
     The left-side operation detection section  52  detects when the left-side operation region has been operated. Specifically, the left-side operation detection section  52  detects when any switch out of the first left-side operation switch  34 L, the second left-side operation switch  36 L, or the left-side function switchover switch  38 L has been operated. Thus, for example, the left-side operation detection section  52  detects when the occupant has touched the first left-side operation switch  34 L using a signal from the corresponding static sensor. The left-side operation detection section  52  also detects when the occupant has pressed the first left-side operation switch  34 L using a signal or the like from the corresponding pressure sensor. 
     In cases in operation of the right-side operation region has been detected, the operation image display section  54  displays a right-side image corresponding to the right-side operation region in a right-side area of the display region V 2 . In cases in which operation of the left-side operation region has been detected, the operation image display section  54  displays a left-side image corresponding to the left-side operation region in a left-side area of the display region V 2 . Explanation follows regarding this functionality of the operation image display section  54 , with reference to  FIG.  4    to  FIG.  6   . 
       FIG.  4    illustrates a state in which the occupant is not touching any operation switch. In this state, a central image  60 M indicating a vehicle state is always displayed in a central area of the display region V 2 . In the present exemplary embodiment, a current speed of the vehicle  12  is displayed as the central image  60 M. A substantially circular arc-shaped indicator is displayed above the speed. 
     In cases in which the occupant has touched any switch out of the first right-side operation switch  34 R, the second right-side operation switch  36 R, or the right-side function switchover switch  38 R following on from the state in  FIG.  4   , a transition is made to the state illustrated in  FIG.  5   . As illustrated in  FIG.  5   , a right-side image  62 M is displayed in a right-side end area of the display region V 2  using the functionality of the operation image display section  54 . 
     The right-side image  62 M is configured including a first right-side operation switch image  34 RM with a shape representing the first right-side operation switch  34 R, a second right-side operation switch image  36 RM with a shape representing the second right-side operation switch  36 R, and a right-side function switchover switch image  38 RM with a shape representing the right-side function switchover switch  38 R.  FIG.  5    illustrates a state in which the occupant is touching an upper portion of the second right-side operation switch  36 R, and so a mark at the upper side of the second right-side operation switch image  36 RM is displayed surrounded by a circle. 
     As an example, icons are not displayed at an upper portion and a right-side portion of the first right-side operation switch image  34 RM. Namely, the design is such that no icon is displayed at a location where no function has been allocated. 
     An icon relating to setting inter-vehicle distance is displayed at a left-side portion of the first right-side operation switch image  34 RM. When this icon is selected, the inter-vehicle distance can be set. Namely, an inter-vehicle distance setting function has been allocated to the left-side portion of the first right-side operation switch  34 R. 
     An icon relating to switching travel modes is displayed at a lower portion of the first right-side operation switch image  34 RM. When this icon is selected, the travel mode can be switched. Namely, a travel mode switchover function has been allocated to the lower portion of the first right-side operation switch  34 R. 
     An icon relating to switching a radar cruising mode ON and OFF is displayed at an upper portion of the second right-side operation switch image  36 RM. When this icon is selected, the radar cruising mode can be switched ON and OFF. An icon relating to switching LTA ON and OFF is displayed at a lower portion of the second right-side operation switch image  36 RM. When this icon is selected, LTA can be switched ON and OFF. Information relating to driving assistance is displayed in the right-side image  62 M in this manner. 
     A function switchover icon is displayed in the right-side function switchover switch image  38 RM. When this icon is selected, the functions allocated to the first right-side operation switch  34 R and those allocated to the second right-side operation switch  36 R are switched over. 
     Note that the operation image display section  54  is configured so as to move the central image  60 M toward the left side from its position in  FIG.  4   , and to display the right-side image  62 M further toward the right side than the central image  60 M. Although not illustrated in the drawings, the operation image display section  54  of the present exemplary embodiment displays the right-side image  62 M as an animation so as to move from a lower-right side end of the display region V 2 . Namely, the operation image display section  54  causes the right-side image  62 M to emerge into view in the display region V 2  from the lower-right side of where the right-side operation region is to be positioned. 
     Details of the function allocated to the switch that the occupant is touching are displayed further toward the left side than the right-side image  62 M. 
     On the other hand, in cases in which the occupant has touched any switch out of the first left-side operation switch  34 L, the second left-side operation switch  36 L, or the left-side function switchover switch  38 L following on from the state in  FIG.  4   , a transition is made to the state illustrated in  FIG.  6   . As illustrated in  FIG.  6   , a left-side image  64 M is displayed in a left-side end area of the display region V 2  using the functionality of the operation image display section  54 . 
     The left-side image  64 M is configured including a first left-side operation switch image  34 LM with a shape representing the first left-side operation switch  34 L, a second left-side operation switch image  36 LM with a shape representing the second left-side operation switch  36 L, and a left-side function switchover switch image  38 LM with a shape representing the left-side function switchover switch  38 L.  FIG.  6    illustrates a state in which the occupant is touching the left-side function switchover switch  38 L, and so the left-side function switchover switch image  38 LM is displayed surrounded by a circle. 
     A icon relating to an air conditioner function is displayed at a left-side portion of the first left-side operation switch image  34 LM. When this icon is selected, the air conditioner function can be switched ON and OFF. 
     An icon indicating airflow directions is displayed at a right-side portion of the first left-side operation switch image  34 LM. When this icon is selected, the airflow direction can be changed. Icons for changing the set temperature of the air conditioner are respectively displayed at upper and lower portions of the first left-side operation switch image  34 LM. 
     A volume up icon is displayed at an upper portion of the second left-side operation switch image  36 LM. When this icon is selected, the volume of music or the like being played inside the vehicle cabin is increased by a predetermined amount. A volume down icon is displayed at a lower portion of the second left-side operation switch image  36 LM. When this icon is selected, the volume is reduced by a predetermined amount. Information relating to onboard equipment is displayed in the left-side image  64 M in this manner. 
     A function switchover icon is displayed in the left-side function switchover switch image  38 LM. When this icon is selected, the functions allocated to the first left-side operation switch  34 L and those allocated to the second left-side operation switch  36 L are switched over. 
     Note that the operation image display section  54  is configured so as to move the central image  60 M toward the right side from its position in  FIG.  4   , and to display the left-side image  64 M further toward the left side than the central image  60 M. Although not illustrated in the drawings, the operation image display section  54  of the present exemplary embodiment displays the left-side image  64 M as an animation so as to move from a lower-left-side end of the display region V 2 . Namely, the operation image display section  54  causes the left-side image  64 M to emerge into view in the display region V 2  from the lower-left side of where the left-side operation region is to be positioned. 
     Details of the function allocated to the switch that the occupant is touching are displayed further toward the right side than the left-side image  64 M. 
     Furthermore, in cases in which the operation image display section  54  of the present exemplary embodiment has detected operation of both the right-side operation region and the left-side operation region by the occupant, the operation image display section  54  is set so as to display the right-side image  62 M alone. Namely, in cases in which the occupant is touching both the first right-side operation switch image  34 RM and the first left-side operation switch image  34 LM, the operation image display section  54  displays the right-side image  62 M on the display region V 2 . 
     The suggestion image display section  56  illustrated in  FIG.  3    displays a right-side suggestion image selectable using the right-side operation region, or a left-side suggestion image selectable using the left-side operation region, in the display region V 2 . Specifically, in cases in which a check item for the occupant or a suggestion item for the occupant has been received from the driving assistance ECU  44 , a navigation system, or the like, the suggestion image display section  56  displays the content of this check item or suggestion item on the display region V 2 . Explanation follows regarding this functionality of the suggestion image display section  56 , with reference to  FIG.  7   . 
     For example, in cases in which a suggestion for a new route has been received from the navigation system, a transition is made from the state in  FIG.  4    to the state in  FIG.  7   . In  FIG.  7   , a left-side suggestion image  66 M is displayed in the display region V 2  by the suggestion image display section  56 . 
     The left-side suggestion image  66 M is configured including the first left-side operation switch image  34 LM, the second left-side operation switch image  36 LM, and the left-side function switchover switch image  38 LM.  FIG.  7    illustrates a state in which the occupant is touching the upper portion of the first left-side operation switch image  34 LM, and so an icon at the upper portion of the first left-side operation switch image  34 LM is displayed surrounded by a circle. 
     There is no display performed in the left and right portions of the first left-side operation switch image  34 LM. An icon for accepting the suggestion is displayed at the upper portion of the first left-side operation switch image  34 LM. An icon for refusing the suggestion is displayed at the lower portion of the first left-side operation switch image  34 LM. 
     An icon to return to the previous display is displayed in the left-side function switchover switch image  38 LM. When this icon is selected, the display switches to the first left-side operation switch image  34 LM, the second left-side operation switch image  36 LM, and the left-side function switchover switch image  38 LM in the state prior to the suggestion being displayed. 
     Next, explanation follows regarding operation of the present exemplary embodiment. 
     Explanation follows regarding an example of display processing by the vehicular display control device  10 , with reference to the flowchart illustrated in  FIG.  8   . The display processing is executed by the CPU  20  reading a display program from the ROM  22  or the storage  26 , and deploying and executing the display program in the RAM  24 . 
     At step S 102 , the CPU  20  acquires an operation situation of each of the operation regions. Specifically, the CPU  20  acquires information from the non-illustrated static sensors that are respectively installed to the first right-side operation switch  34 R, the second right-side operation switch  36 R, the right-side function switchover switch  38 R, the first left-side operation switch  34 L, the second left-side operation switch  36 L, and the left-side function switchover switch  38 L. 
     At step S 104 , the CPU  20  determines whether or not the hand of the occupant is contacting the right-side operation region. Specifically, in cases in which the CPU  20  has detected using the functionality of the right-side operation detection section  50  that the hand of the occupant is contacting any switch out of the first right-side operation switch  34 R, the second right-side operation switch  36 R, or the right-side function switchover switch  38 R, step S 104  is affirmative and processing transitions to step S 106 . On the other hand, in cases in which the CPU  20  has not detected using the functionality of the right-side operation detection section  50  that the hand of the occupant has contacted any switch out of the first right-side operation switch  34 R, the second right-side operation switch  36 R, or the right-side function switchover switch  38 R, step S 104  is negative and processing transitions to step S 110 . The processing of step S 110  onward is described later. 
     At step S 106 , the CPU  20  uses the functionality of the operation image display section  54  to move the central image  60 M toward the left side. At step S 108 , the CPU  20  causes the right-side image  62 M to emerge into view in the display region V 2  (see  FIG.  5   ). 
     On the other hand, in cases in which the hand of the occupant has not contacted the right-side operation region, at step S 110 , the CPU  20  determines whether or not the hand of the occupant has contacted the left-side operation region. Specifically, in cases in which the CPU  20  has detected using the functionality of the left-side operation detection section  52  that the hand of the occupant is touching any switch out of the first left-side operation switch  34 L, the second left-side operation switch  36 L, or the left-side function switchover switch  38 L, step S 110  is affirmative and processing transitions to step S 112 . On the other hand, in cases in which the CPU  20  has not detected using the functionality of the left-side operation detection section  52  that the hand of the occupant has contacted any switch out of the first left-side operation switch  34 L, the second left-side operation switch  36 L, or the left-side function switchover switch  38 L, step S 110  is negative and the display processing is ended. 
     At step S 112 , the CPU  20  uses the functionality of the operation image display section  54  to move the central image  60 M toward the right side. At step S 114 , the CPU  20  causes the left-side image  64 M to emerge into view in the display region V 2  (see  FIG.  6   ). 
     As described above, in the vehicular display control device  10  according to the present exemplary embodiment, the right-side image  62 M corresponding to the right-side operation region is displayed in the right-side area of the display region V 2  set in front of the driving seat in cases in which the right-side operation region provided on the right side of the steering wheel  16  has been operated. Similarly, the left-side image  64 M corresponding to the left-side operation region is displayed in the left-side area of the display region V 2  in cases in which the left-side operation region provided on the left side of the steering wheel  16  has been operated. This enables a wide area of the display region V 2  to be secured compared to cases in which both the right-side image  62 M and the left-side image  64 M are always displayed on the display region V 2 . 
     In particular, in cases in which the display region V 2  is set as a part of the windshield glass  17  as in the present exemplary embodiment, the contents of the right-side image  62 M and those of the left-side image  64 M can be checked in a state in which the occupant is directing their gaze toward the front while driving. 
     Moreover, in the present exemplary embodiment, since the right-side image  62 M is displayed in the right-side area of the display region V 2  whereas the left-side image  64 M is displayed in the left-side area of the display region V 2 , the occupant can intuitively ascertain which operation region the displayed image corresponds to out of the right-side operation region or the left-side operation region. 
     Furthermore, in the present exemplary embodiment, since the right-side image  62 M is displayed on the right side of the central image  60 M whereas the left-side image  64 M is displayed on the left side of the central image  60 M, the occupant can even more easily ascertain which operation region the displayed image corresponds to out of the right-side operation region or the left-side operation region. 
     Furthermore, in the present exemplary embodiment, the central image  60 M is moved when the right-side image  62 M or the left-side image  64 M is to be displayed, thereby enabling the corresponding right-side image  62 M or left-side image  64 M to be displayed in a large size, even in cases in which the display region V 2  is relatively small. 
     Moreover, in the present exemplary embodiment, since the right-side image  62 M or the left-side image  64 M is displayed as an animation, the occupant can intuitively ascertain that the image (the right-side image or left-side image) displayed on the display region V 2  corresponds to an operation region (the left-side operation region or right-side operation region) provided on the steering wheel  16 . 
     Furthermore, in the present exemplary embodiment, in cases in which operation of both the right-side operation region and the left-side operation region has been detected, display of the right-side image  62 M is prioritized. This enables the occupant to prioritize checking information relating to driving assistance. 
     Furthermore, in the present exemplary embodiment, in cases in which a suggestion from the navigation system or the like is displayed using the right-side suggestion image or the left-side suggestion image, this suggestion is displayed at a position corresponding to the pertinent operation region, thereby enabling the occupant to intuitively ascertain the position of the operation region they should operate. 
     Although the vehicular display system S and the vehicular display control device  10  according to the present exemplary embodiment have been described above, obviously various modifications may be implemented within a range not departing from the spirit of the present disclosure. For example, although an example of display in the display region V 2  has been described in the above exemplary embodiment, there is no limitation thereto, and the corresponding right-side image or left-side image may be displayed in the display region V 1 . 
     Moreover, although a state has been illustrated and described in which the left-side suggestion image  66 M is displayed by the suggestion image display section  56  as illustrated in  FIG.  7    in the above exemplary embodiment, a right-side suggestion image may be displayed by the suggestion image display section  56 . Specifically, the suggestion image display section  56  may display a right-side suggestion image further toward the right side than the central image  60 M for an item selectable using the right-side operation region. 
     Furthermore, although a configuration has been illustrated and described in which the corresponding right-side image  62 M or left-side image  64 M emerges into view as an animation in the above exemplary embodiment, the image may also be made to retreat out of view when transitioning to a non-display state. For example, in cases in which the occupant has removed their hand from the right-side operation region while in the state illustrated in  FIG.  5   , the right-side image  62 M may be made to retreat out of view by the operation image display section  54  after a predetermined duration has elapsed. Namely, the operation image display section  54  may display the right-side image  62 M as an animation so as to move toward the lower-right side end. Furthermore, the operation image display section  54  may move the central image  60 M to the center of the display region V 2  after causing the right-side image  62 M to retreat out of view, or at the same time as causing the right-side image  62 M to retreat out of view. 
     Furthermore, there is no particular limitation to the number and shapes of the respective operation switches and respective function switchover switches, which may be modified as appropriate.