Vehicle display system

Abstract

To enable a quick display of an image on a display device when a vehicular occupant performs an operation to display the image on the device.SOLUTION: A vehicular display system 12 includes: a display device 21F disposed in a vehicle; a display CTL 70 for supplying the display device with display data; a display device-power supply relay 40 for switching on-off of power feed to the display device: a CTL-power supply relay 50 for switching on-off of power feed to the display CTL; an instruction reception part 37; and a power supply controller 60 for controlling the display device-power supply relay and CTL-power supply relay. The power supply controller sets the display system at a display mode by turning on the display device-power supply relay and CTL-power supply relay, turns off, when receiving an off instruction from the instruction reception part in the display mode, the display device-power supply relay, and maintains an on-state of the CTL-power supply relay, thus setting the display system at a sleep mode in which a power feed to the display is shut off and power supply of the display CTL is maintained.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a display system for a vehicle, and more particularly to power control for a display device and a display controller mounted on the vehicle. [Background technology]

[0002] Vehicles such as route buses are operated with LED displays on the front, rear, and sides of the vehicle, which show route names, destinations, stops, etc. Some such vehicles also have a liquid crystal display (display) inside the vehicle that shows all stops, etc.

[0003] The display system of a vehicle such as a route bus is composed of a display device and a display controller that supplies display data to the display device. The power supply to the display system is controlled by a power switch installed inside the vehicle and the vehicle's ignition switch.

[0004] Patent Document 1 discloses a technique for preventing the battery from running down by cutting off the power supply from the ignition power source under certain conditions when the vehicle is left unattended with the ignition power source on. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-101778 Summary of the Invention [Problem to be solved by the invention]

[0006] If power supply to the display system is cut off, when power supply to the display system is started again by a vehicle occupant operating the display to display an image, a startup process is performed in the display controller, which causes a problem in that it takes time for the image to be displayed on the display.

[0007] An object of the present invention is to enable an image to be displayed on a display device promptly when a vehicle occupant performs an operation to display an image on the display device. [Means for solving the problem]

[0008] The display system for a vehicle according to the present invention includes a display device disposed on the exterior surface or inside the vehicle; Generate display data using route information relating to the route on which the vehicle is operated, and display the generated display data On the display supply a display controller for switching on and off a power supply to the display, a display / power supply relay for switching on and off a power supply to the display controller, a command receiving unit for receiving a command from an occupant of the vehicle to turn on and off the display / power supply relay, and a power supply controller for controlling the display / power supply relay and the controller / power supply relay. an unlock detection unit that detects unlocking of a door of the vehicle using a key; The power supply controller comprises: The unlock detection unit detects that the door is unlocked. Switch the controller power relay from off to on at the timing As a result, power supply to the display controller is started, and the display controller starts the process of generating the display data. After the power supply controller switches the controller power supply relay from off to on, By switching the display device power supply relay from OFF to ON at the timing when an ON instruction is received from the instruction receiving unit, power is supplied to both the display controller and the display device in the display system. and the generated display data is supplied to the display device. The display system is in a display mode, and when an off instruction is received from the instruction receiving unit in the display mode, the display unit / power supply relay is switched from on to off while the controller / power supply relay is maintained in an on state, thereby switching the display system to a sleep mode in which power supply to the display unit is cut off and power supply to the display controller is maintained.

[0009] In the vehicle display system of the present invention, the power supply controller may detect that the vehicle's ignition switch has been switched from on to off in the display mode, and then, when a predetermined time has elapsed since the detection, switch the display power supply relay from on to off, thereby putting the display system into the sleep mode.

[0010] In the vehicle display system of the present invention, when the power supply controller receives an on instruction from the instruction receiving unit in the sleep mode, it may switch the display device / power supply relay from off to on, thereby putting the display system back into the display mode.

[0011] The vehicle display system of the present invention may further include a lock detection unit that detects locking of the vehicle door using a key, and the power supply controller may switch the controller power supply relay from on to off when the lock detection unit detects that the door has been locked.

[0013] In the vehicle display system of the present invention, the instruction receiving unit may be a push button located inside the vehicle, and when the power supply controller detects that the push button has been pressed while the display and power supply relay are in an off state, it may receive this as an instruction to turn on the display and power supply relay, and when the power supply controller detects that the push button has been pressed while the display and power supply relay are in an on state, it may receive this as an instruction to turn off the display and power supply relay.

[0014] In the vehicle display system of the present invention, the instruction receiving unit may be an ignition switch of the vehicle, and when the power supply controller detects a change of the ignition switch from off to on, it may receive this as an instruction to turn on the display and power supply relay, and when it detects a change of the ignition switch from on to off, it may receive this as an instruction to turn off the display and power supply relay. [Effects of the Invention]

[0015] According to the present invention, power supply to the display controller is maintained in the sleep mode of the display system, so that when the instruction receiving unit receives an instruction from a vehicle occupant to turn on the display / power relay (an instruction to display an image on the display) in that mode, the image is quickly displayed on the display. [Brief explanation of the drawings]

[0016] [Figure 1] 1 is a perspective view of a vehicle according to an embodiment; [Figure 2] 1 is a functional block diagram of a display system for a vehicle according to an embodiment; [Figure 3] FIG. 10 is a state transition diagram of the controller power supply. [Figure 4] FIG. 4 is a state transition diagram of the display power supply. [Figure 5] FIG. 2 is a state transition diagram of a display controller. [Figure 6A] 10 is a timing chart showing an example of state changes of a display controller and a display device. [Figure 6B] 10 is a timing chart showing another example of state changes of the display controller and the display device. [Figure 7] FIG. 10 is a state transition diagram of a display power supply in a display system for a vehicle according to another embodiment. [Figure 8] 10 is a timing chart showing an example of state changes of a display controller and a display device in a display system for a vehicle according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0017] Hereinafter, each embodiment of the present invention will be described with reference to the drawings. The configurations described below are examples for the purpose of explanation and can be modified as appropriate to suit the vehicle specifications, etc. Furthermore, when multiple embodiments or variations are included below, it is assumed from the beginning that their characteristic parts will be used in appropriate combination. The same elements will be assigned the same reference numerals in all drawings, and duplicated explanations will be omitted.

[0018] 1 is a perspective view of a vehicle 10 according to an embodiment. In the figure, the arrow FR indicates the front of the vehicle, the arrow UP indicates the upper side of the vehicle, and the arrow LH indicates the left side of the vehicle. In addition, the figure shows a display 21I disposed in the passenger compartment and a display 21R disposed on the rear of the vehicle, and their locations are indicated by dashed arrows.

[0019] The vehicle 10 has a substantially rectangular parallelepiped shape and is an autonomously driven automobile. Specifically, the vehicle 10 can be driven in a plurality of driving modes, including an autonomous driving mode and a manual driving mode. The vehicle 10 is an electric vehicle powered by a rotating electric machine (not shown). The vehicle 10 is equipped with a battery that supplies power to the rotating electric machine. In another embodiment, the vehicle 10 may be a vehicle powered by an internal combustion engine.

[0020] The vehicle 10 is used as a route bus for passengers of an unspecified number of passengers. A boarding / alighting opening 28 is provided on the side of the vehicle body of the vehicle 10. The boarding / alighting opening 28 is located approximately in the center of the vehicle in the fore-and-aft direction, and is closed by a door 30 when the vehicle is traveling. The door 30 is a sliding door, and the boarding / alighting opening 28 opens when the front door 30 moves forward and the rear door 30 moves rearward.

[0021] The vehicle 10 is provided with a door button 32 disposed on the outer surface of the door 30. When the door 30 is in a closed state, pressing the door button 32 causes the door 30 to open. When the door 30 is in an open state, pressing the door button 32 causes the door 30 to close.

[0022] 1, displays 21F, 21R, 21S, and 21I are disposed on the front, rear, and sides of the vehicle, and inside the vehicle cabin, respectively. Display 21F on the front of the vehicle is disposed below the windshield, display 21R on the rear of the vehicle is disposed below the rear window (not shown), display 21S on the side of the vehicle is disposed on the outer surface above sliding door 30, and display 21I inside the vehicle cabin is disposed on the inner wall near the ceiling on the right side of the vehicle.

[0023] The displays 21F, 21R, and 21S provided on the exterior of the vehicle are LED displays, and the display 21I provided inside the vehicle cabin is a liquid crystal display. An LED display is a display configured by arranging a large number of LED elements vertically and horizontally, and displays characters, symbols, etc. by selectively illuminating a plurality of the LED elements. The configuration of each of the displays 21F, 21R, 21S, and 21I is not limited to that described above, and each display can selectively employ an LED display, a liquid crystal display, an organic EL display, etc.

[0024] Displays 21F, 21R, and 21S provided on the exterior of the vehicle are configured to display the route number, route name, destination, major stops (bus stops), etc. of the route on which the vehicle 10 runs. Also, display 21I provided inside the vehicle is configured to display all stops (bus stops), etc.

[0025] 2 is a functional block diagram of a display system 12 for a vehicle according to an embodiment. The display system 12 includes displays 21F, 21R, 21S, and 21I, a display controller 70, a display / power relay 40, a controller (CTL) / power relay 50, a power controller 60, an unlock / lock detector 36, a push button 37 (instruction receiver), an IG switch 38 (ignition switch), and a battery 34. Hereinafter, when there is no need to distinguish between the displays 21F, 21R, 21S, and 21I, they will be referred to as display 21. Furthermore, the controller will be referred to as CTL where appropriate.

[0026] The display controller 70 supplies display data 76 to each display device 21. The display controller 70 includes a processor 71 having a CPU and a storage unit 72. The storage unit 72 is, for example, a RAM, a ROM, or a flash memory. The storage unit 72 stores a control program 73, control data 74, route information 75, and multiple pieces of display data 76. The route information 75 is information about the route on which the vehicle 10 operates, and includes, for example, the route number, route name, destination, and stops (bus stops). The processor 71 operates in accordance with the control program 73 and control data 74 stored in the storage unit 72. The processor 71 uses the route information 75 to generate multiple pieces of display data 76 and supplies them to each display device 21.

[0027] The display / power supply relay 40 is a mechanical relay. It includes a coil 42 and a switch 41 that is movable by the coil 42. Both terminals of the coil 42 are connected to the power supply controller 60. An input terminal 43 of the switch 41 is connected to the battery 34, and an output terminal 45 of the switch 41 is connected to each display 21 and the display controller 70. The output terminal 45 of the switch 41 functions as a display power supply 45 and supplies power to each display 21. Although the display power supply 45 is connected to the display controller 70, it does not supply power to the display controller 70; the display controller 70 monitors the on / off state of the display power supply 45 to control itself.

[0028] The CTL power supply relay 50 is a mechanical relay. The CTL power supply relay 50 includes a coil 52 and a switch 51 that is movable by the coil 52. Both terminals of the coil 52 are connected to a power supply controller 60. An input terminal 53 of the switch 51 is connected to the battery 34, and an output terminal 55 of the switch 51 is connected to a display controller 70. The output terminal 55 of the switch 51 functions as a CTL power supply 55 and supplies power to the display controller 70.

[0029] The power supply controller 60 controls the display / power supply relay 40 (switch 41) and the CTL / power supply relay 50 (switch 51). The power supply controller 60 controls the on / off of the switch 41 by controlling the current flowing through the coil 42 of the display / power supply relay 40, and controls the on / off of the switch 51 by controlling the current flowing through the coil 52 of the CTL / power supply relay 50. The power supply controller 60 includes a processor 61 having a CPU, and a storage unit 62. The storage unit 62 is, for example, a RAM, a ROM, or a flash memory. A control program 63 and control data 64 are stored in the storage unit 62. The processor 61 operates in accordance with the control program 63 and control data 64 stored in the storage unit 62.

[0030] The unlock / lock detection unit 36 ​​(hereinafter simply referred to as the detection unit 36) detects the unlocking and locking of the door 30 using a key for the vehicle 10. For example, the door 30 is unlocked or locked when a key carried by a driver of the vehicle 10 is inserted into a keyhole (not shown) provided in the vehicle 10 and turned. The door 30 is unlocked or locked when a key radio wave receiver (not shown) mounted on the vehicle 10 receives radio waves from a smart key carried by the driver. Specifically, when an unlock button or lock button provided on the smart key is pressed, the key radio wave receiver receives radio waves output from the smart key, thereby unlocking or locking the door 30. The door 30 is unlocked when an operation to open the door 30 (pressing the door button 32) is performed while the key radio wave receiver is receiving radio waves from the smart key. Furthermore, after the door 30 is closed (the door button 32 is pressed) while the key radio wave receiver is receiving radio waves from the smart key, the door 30 is locked when a certain period of time has passed since the key radio wave receiver stopped receiving radio waves from the smart key. As described above, there are various ways to unlock and lock the door 30 using the key of the vehicle 10. The detection unit 36 ​​may be, for example, a sensor that detects the mechanical operation of the lock portion of the door 30, or a key radio wave receiver mounted on the vehicle 10. The detection unit 36 ​​may also be, for example, a detection system including the key radio wave receiver and the door button 32. The form of the detection unit 36 ​​is not limited as long as it can detect the unlocking and locking of the door 30 using the key. The detection unit 36 ​​is electrically connected to the power supply controller 60.

[0031] The push button 37 is an instruction receiving unit that receives an instruction to turn on / off the display / power supply relay 40 (switch 41). The push button 37 is provided near the driver's seat inside the vehicle and is operated by a crew member of the vehicle 10. The push button 37 may be a power button for the navigation system of the vehicle 10. That is, the push button 37 may be configured to switch on / off the display / power supply relay 40 (switch 41) in conjunction with pressing the power button for the navigation system (turning on the display power supply 45 when the navigation system is powered on, and turning off the display power supply 45 when the navigation system is powered off). The push button 37 is electrically connected to the power supply controller 60.

[0032] An ignition switch 38 (hereinafter referred to as the IG switch 38) of the vehicle 10 is electrically connected to a power supply controller 60. Information on whether the IG switch 38 is on or off is input to the power supply controller 60.

[0033] The battery 34 is mounted on the vehicle 10 and is electrically connected to the input terminal 43 of the display / power relay 40, the input terminal 53 of the CTL / power relay 51, and the power controller 60. The battery 34 supplies power to the display system 12.

[0034] 3 is a state transition diagram of the CTL power supply 55 (CTL power supply relay 50). When the CTL power supply 55 is in the off state (switch 51: open) and the unlock / lock detection unit 36 ​​detects that the door 30 is unlocked, the power supply controller 60 turns the CTL power supply 55 on (switch 51: closed). Also, when the CTL power supply 55 is in the on state (switch 51: closed) and the unlock / lock detection unit 36 ​​detects that the door 30 is locked, the power supply controller 60 turns the CTL power supply 55 off (switch 51: open).

[0035] FIG. 4 is a state transition diagram of the display power supply 45 (display power supply relay 40). When the display power supply 45 is in the off state (switch 41: open) and the power supply controller 60 detects that the push button 37 is pressed, the power supply controller 60 switches the display power supply 45 to the on state (switch 41: closed). When the display power supply 45 is in the on state (switch 41: closed) and the power supply controller 60 detects that the push button 37 is pressed, the power supply controller 60 switches the display power supply 45 to the off state (switch 41: open). When the display power supply 42 is in the on state and the power supply controller 60 detects that the IG switch 38 has switched from on to off, the power supply controller 60 switches the display power supply 45 to the off state after a predetermined time has elapsed since the detection. This control of the display power supply 45 by the IG switch 38 is intended to prevent the train crew from forgetting to turn off the display power supply 45, which could result in the battery running out.

[0036] 5 is a state transition diagram of the display controller 70. The states of the display controller 70 include a shutdown state (S1), an active state (S2), a sleep state (S3), and a display state (S4). When the CTL power supply 55 is off, the display controller 70 is in the shutdown state (S1). When the CTL power supply 55 is turned on in the shutdown state (S1), the display controller 70 transitions to the active state (S2). In the active state (S2), the display controller 70 reads a control program 73 and control data 74 to perform a startup process. The startup process includes, for example, a process of generating a plurality of display data 76 (bitmap data) using route information 75.

[0037] When the startup process is completed in the startup state (S2), the display controller 70 transitions to a sleep state (S3). In the sleep state (S3), the display controller 70 stops driving some or all of the clock signals in the processor 71, thereby reducing the power consumption of the display controller 70.

[0038] Then, in the sleep state (S3), when the train crew presses the push button 37 to turn on the display power supply 45, the display controller 70 transitions to the display state (S4). In the display state (S4), the display controller 70 resumes driving the clock signal that was stopped in the sleep state (S3), and supplies each of the multiple pieces of display data 76 stored in the storage unit 72 to each display 21. As a result, each display 21 receives the display data 76 and displays an image in accordance with the display data 76.

[0039] Then, when the display power supply 45 is turned off in the display state (S4), the display controller 70 transitions again to the sleep state (S3). The display controller 70 transitions between the sleep state (S3) and the display state (S4) by turning on and off the display power supply 45. Then, when the CTL power supply 55 is turned off in the sleep state (S3), the display controller 70 returns to the shutdown state (S1).

[0040] 6A is a timing chart showing an example of state changes of the display controller 70 and the display devices 21. As shown in Fig. 6A, at time t0, the vehicle 10 is parked in a parking lot or the like. At this time, the CTL power supply 55 and the display device power supply 45 are both off, the display controller 70 is in a shutdown state, and the displays of the display devices 21 are off.

[0041] At time t1, the driver of vehicle 10 unlocks door 30 of vehicle 10 with a key and gets into vehicle 10. At this time, unlock / lock detection unit 36 ​​detects the unlocking, and power supply controller 60 changes CTL power supply 55 (CTL power supply relay 50) from off to on. As a result, display controller 70 transitions from a shutdown state to a startup state, and startup processing is performed in display controller 70.

[0042] At time t2, the IG switch 38 is turned on. Then, at time t3, the startup process is completed in the display controller 70, and the display controller 70 goes into a sleep state.

[0043] At time t4, the crew member presses the push button 37. The power supply controller 60 detects that the push button 37 has been pressed, and switches the display power supply 45 (display power supply relay 40) from OFF to ON. This causes the display system 12 to enter a display mode in which power is supplied to both the display controller 70 and the display 21. The display controller 70 enters a display state, and each display 21 displays an image.

[0044] In this embodiment, when the unlocking of the door 30 of the vehicle 10 is detected (when the driver is detected getting into the vehicle 10, t1 in Figure 6A), the CTL power supply 55 (CTL power supply relay 50) is turned on and the startup process of the display controller 70 is started, so that when the driver presses the push button 37 (when the display power supply 45 is turned on), an image can be quickly displayed on each display 21.

[0045] The vehicle 10 operates during a period from t4 to t5. Then, at time t5, the driver presses the push button 37. The power supply controller 60 detects that the push button 37 has been pressed, and switches the display power supply 45 (display power supply relay 40) from on to off. This causes the display system 12 to enter a sleep mode in which power supply to the display 21 is cut off and power supply to the display controller 70 is maintained. The display controller 70 enters a sleep state, and the display of each display 21 is turned off.

[0046] In the sleep mode of the display system 12, power supply to the display controller 70 is maintained, so that when the flight attendant presses the push button 37 again (when the display power supply 45 is turned on), images can be quickly displayed on each display 21. When the display power supply 45 is turned on in the sleep mode, the display system 12 transitions again to the display mode. The display system 12 transitions between the sleep mode and the display mode by turning the display power supply 45 on and off.

[0047] At time t6, the IG switch 38 is turned off. Then, at time t7, the driver gets off the vehicle 10 and locks the door 30 using the vehicle 10 key. At this time, the unlock / lock detection unit 36 ​​detects that the door 30 is locked, and the power supply controller 60 changes the CTL power supply 55 (CTL power supply relay 50) from off to on. This causes the display controller 70 to transition from the sleep state to the shutdown state.

[0048] Fig. 6B is a timing chart showing another example of state changes of the display controller 70 and the display 21. Fig. 6B shows the same operations as Fig. 6A from t0 to t4, but the operations after t4 are different from those in Fig. 6A. Fig. 6B shows a case where the driver forgets to turn off the display power supply 45 using the push button 37 after the vehicle 10 has started operating.

[0049] 6B, at time t4, the crew member presses push button 37, switching display power supply 45 from off to on. This switches display system 12 into the display mode, display controller 70 into the display state, and each display 21 displays an image.

[0050] Then, after the vehicle 10 has been in operation, the driver forgets to turn off the display power supply 45, and at time t6, the IG switch 38 is turned from on to off. The power supply controller 60 detects the turning of the IG switch 38 from on to off and measures the elapsed time from the point in time when this was detected (t6 in FIG. 6B) using a timer. Then, when the elapsed time reaches a predetermined time TP (time t61 in FIG. 6B), the power supply controller 60 turns the display power supply 45 (display / power supply relay 40) from on to off. This causes the display system 12 to enter sleep mode, the display controller 70 to enter a sleep state, and the display of each display 21 is turned off. Note that this predetermined time TP may be stored in advance in the memory unit 62 of the power supply controller 60.

[0051] In this way, the power supply controller 60 automatically turns off the display power supply 45, thereby preventing the battery from running out even if the crew forgets to turn off the display power supply 45. The operation of the display system after time t61 in Figure 6B is the same as the operation of the display system after time t6 in Figure 6A.

[0052] Next, a vehicle display system according to another embodiment will be described. Fig. 7 is a state transition diagram of the display power supply 45 in another embodiment, and Fig. 8 is a timing chart showing an example of state changes of the display controller 70 and the display 21 in this embodiment. This embodiment differs from the embodiment described above in the control of the display power supply 45 by the power supply controller 60; otherwise, the two have the same configuration. This embodiment uses an IG switch 38 as an instruction receiving unit that receives an instruction to turn on or off the display power supply 45 (display / power supply relay 40).

[0053] 7, when the power supply controller 60 detects a change from off to on of the IG switch 38 while the display power supply 45 is in the off state (switch 41: open), the power supply controller 60 switches the display power supply 45 to the on state (switch 41: closed). Also, when the power supply controller 60 detects a change from on to off of the IG switch 38 while the display power supply 45 is in the on state (switch 41: closed), the power supply controller 60 switches the display power supply 45 to the off state (switch 41: open).

[0054] In Figure 8, the operation from t0 to t1 is the same as in Figure 6A, but the operation after t1 differs from Figure 6A. As shown in Figure 8, at time t1, the unlock / lock detection unit 36 ​​detects that the door 30 is unlocked, and the power supply controller 60 changes the CTL power supply 55 (CTL power supply relay 50) from off to on. This causes the display controller 70 to transition from the shutdown state to the startup state, and the display controller 70 performs startup processing.

[0055] At time t2, the startup process is completed in the display controller 70, and the display controller 70 goes into a sleep state.

[0056] At time t3, the IG switch 38 is turned on by the flight crew. The power supply controller 60 detects that the IG switch 38 has been turned on, and changes the display power supply 45 (display power supply relay 40) from off to on. This causes the display system 12 to enter a display mode in which power is supplied to both the display controller 70 and the display 21. The display controller 70 enters a display state, and each display 21 displays an image.

[0057] The vehicle 10 is in operation between periods t3 and t4. Then, at time t4, the IG switch 38 is turned from on to off by the crew. The power supply controller 60 detects that the IG switch 38 has been turned off, and transitions the display power supply 45 (display power supply relay 40) from on to off. This causes the display system 12 to enter a sleep mode in which power supply to the display 21 is cut off and power supply to the display controller 70 is maintained. The display controller 70 enters a sleep state, and the display of each display 21 is turned off. The operation of the display system from time t4 onwards in FIG. 8 is the same as the operation of the display system from time t6 onwards in FIG. 6A.

[0058] According to the other embodiment described above, the on / off state of the display power supply 45 is changed in conjunction with the on / off state of the IG switch 38, which reduces the effort required for the crew to operate the display system compared to a configuration in which the display power supply 45 is switched on / off by the push button 37 in addition to operating the IG switch 38.

[0059] In the above-described embodiments, only the display power supply 45 is input to each display 21. However, a configuration may also be adopted in which the controller power supply 55 is input to each display 21 in addition to the display power supply 45, and power is supplied from the controller power supply 55 to a part of the display 21 (for example, a memory in the display 21 that temporarily stores the display data 76). [Explanation of symbols]

[0060] 10 vehicle, 12 display system, 21, 21F, 21R, 21S, 21I display, 28 entrance / exit, 30 door (sliding door), 32 door button, 34 battery, 36 unlock / lock detection unit (detection unit), 37 push button, 38 ignition switch (IG switch), 40 display / power relay, 41 switch (display / power switch), 42 coil, 43 input terminal, 45 display power supply (output terminal), 50 controller / power relay (CTL / power relay), 51 switch (CTL / power switch), 52 coil, 53 input terminal, 55 controller power supply (CTL power supply, output terminal), 60 power supply controller, 61 processor, 62 memory unit, 63 control program, 64 control data, 70 display controller (display CTL), 71 processor, 72 memory unit, 73 control program, 74 Control data, 75 route information, 76 display data.

Claims

1. 1. A vehicle display system, comprising: a display disposed on the exterior or interior of the vehicle; a display controller that generates display data using route information related to the route on which the vehicle operates and supplies the display data to the display device; a display / power relay that switches on / off the power supply to the display; a controller / power relay that switches on / off the power supply to the display controller; an instruction receiving unit that receives an instruction to turn on / off the display and power supply relay from an occupant of the vehicle; a power supply controller that controls the display / power supply relay and the controller / power supply relay; an unlock detection unit that detects unlocking of a door of the vehicle using a key, The power supply controller when the unlock detection unit detects that the door has been unlocked, the controller power supply relay is switched from off to on, thereby starting power supply to the display controller and starting a process of generating the display data by the display controller; The power supply controller after switching the controller / power supply relay from OFF to ON, by switching the display / power supply relay from OFF to ON at a timing when an ON instruction is received from the instruction receiving unit, the display system is set to a display mode in which power is supplied to both the display controller and the display and the generated display data is supplied to the display; When an OFF instruction is received from the instruction receiving unit in the display mode, the display / power supply relay is switched from ON to OFF, while the controller / power supply relay is maintained in an ON state, thereby putting the display system into a sleep mode in which power supply to the display is cut off and power supply to the display controller is maintained. A vehicle display system comprising:

2. 2. The vehicle display system according to claim 1, The power supply controller and after detecting that an ignition switch of the vehicle has been switched from on to off in the display mode, switching the display power supply relay from on to off when a predetermined time has elapsed since the detection, thereby putting the display system into the sleep mode. A vehicle display system comprising:

3. 3. The vehicle display system according to claim 1, The power supply controller When an ON instruction is received from the instruction receiving unit in the sleep mode, the display device / power supply relay is switched from OFF to ON, thereby putting the display system back into the display mode. A vehicle display system comprising:

4. The vehicle display system according to any one of claims 1 to 3, a lock detection unit that detects locking of a door by a key of the vehicle; The power supply controller when the lock detection unit detects that the door is locked, the controller power relay is switched from on to off. A vehicle display system comprising:

5. The vehicle display system according to any one of claims 1 to 4, the instruction receiving unit is a push button disposed inside the vehicle, The power supply controller When the display and power supply relay are in an off state and the push button is pressed, the push button is detected as an instruction to turn on the display and power supply relay; When the display and power supply relay are in an on state and pressing of the push button is detected, the detection is accepted as an instruction to turn off the display and power supply relay. A vehicle display system comprising:

6. The vehicle display system according to any one of claims 1 to 4, the instruction receiving unit is an ignition switch of the vehicle, The power supply controller When detecting a change from off to on of the ignition switch, the change is accepted as an instruction to turn on the display / power relay; When a change of the ignition switch from on to off is detected, the change is accepted as an instruction to turn off the display / power relay. A vehicle display system comprising:

Images