JP7415394B2 - vehicle display device - Google Patents

Description

The present invention relates to a display device for a vehicle.

Patent Document 1 describes a display device that inverts and displays charging information displayed on a head-up display during external charging.

Patent No. 4769779

However, in the display device described in Patent Document 1, the charging information is always displayed in reverse video during charging, so if the user wants to visually check the charging status while inside the vehicle, he or she must go outside the vehicle to check or display the reverse display. It is necessary to grasp the information in this state.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a display device for a vehicle that allows a user to easily grasp charging information regardless of whether the user is inside or outside the vehicle.

In order to solve the above problems, the present invention provides a display device for a vehicle equipped with a battery that is charged by an external power source, which has a display surface facing the interior of the vehicle and is transparent, and is capable of displaying images both inside the vehicle interior and outside the vehicle interior. a display section disposed in a position that is visible from either of the vehicle interiors, a display control section that displays an image that is a regular display on the display screen from either the interior of the vehicle interior or the exterior of the vehicle interior, and a display controller located near the vehicle outside the vehicle interior. an approach determination unit that determines whether or not a person is a user of the vehicle, and determines in which direction a person existing near the vehicle outside the vehicle interior is present with respect to the display unit, The display unit is disposed in front of a meter on an instrument panel of the vehicle or in a front window, and the display control unit is configured to display a display when the user is outside the vehicle near the vehicle when the battery is connected to the external power source. If the user does not exist, information regarding the charging state is displayed on the display section using a first image that is a regular display on the display screen, and if the user is a person who is present in front of the vehicle outside the passenger compartment. displays information regarding the state of charge on the display section using a second image that is a regular display on the back side of the display surface, and the user is a person who is present near the vehicle outside the passenger compartment, and the user is located on the side of the vehicle. If the first image exists, information regarding the state of charge is displayed on the display unit using the first image.

As described above, according to the present invention, the user can easily grasp charging information regardless of whether the user is inside or outside the vehicle.

FIG. 1 is a block diagram of a vehicle display device according to an embodiment of the present invention. FIG. 2 is a diagram showing an example of the arrangement of a display of a display device of a vehicle and a stereo camera according to an embodiment of the present invention. FIG. 3 is a diagram showing an example of a display image of a display device of a vehicle according to an embodiment of the present invention, in which FIG. 3(a) is an example of a first image, and FIG. 3(b) is an example of a second image. , FIG. 3(c) is an example of the third image. FIG. 4 is a diagram showing an example of the presence of a person near the vehicle outside the vehicle interior of the vehicle display device according to an embodiment of the present invention, and FIG. Fig. 4(b) shows a case where a person near the vehicle outside the cabin is in front of the vehicle, and Fig. 4(c) shows a case where a person near the vehicle outside the cabin is on the side of the vehicle. FIG. FIG. 5 is a diagram showing an example of the types of people who exist near the vehicle outside the vehicle interior of the vehicle display device according to an embodiment of the present invention, and FIG. 5(a) shows the types of people who exist near the vehicle outside the vehicle interior. FIG. 5(b) is a diagram showing a case where the person who is in the vehicle is a user of the vehicle who has a portable device, and FIG. . FIG. 6 is a flowchart illustrating a procedure for displaying the state of charge of a vehicle display device according to an embodiment of the present invention. FIG. 7 is a flowchart illustrating a procedure for determining a display image of a vehicle display device according to an embodiment of the present invention. FIG. 8 is a diagram showing a modified example of the display of the vehicle display device according to an embodiment of the present invention, FIG. 8(a) is a diagram showing a modified example of the arrangement of the display, and FIG. 8(b) is a diagram showing a modified example of the display arrangement. It is a figure which shows the modification which uses as a head-up display.

A display device for a vehicle according to an embodiment of the present invention is a display device for a vehicle equipped with a battery that is charged by an external power source, and has a display surface facing inside the vehicle interior and is transparent. a display unit disposed at a position that is visible from both inside and outside the vehicle; a display control unit that displays an image visible from either inside the vehicle or outside the vehicle on a display screen; an approach determination unit that determines whether or not there is a person in the vicinity; the display control unit determines whether or not there is a person in the vicinity of the vehicle when the battery is connected to an external power source; , the information regarding the charging state is displayed on the display section using the first image that becomes a visible regular display on the display surface, and when there is a person near the vehicle outside the vehicle interior, the information is displayed inverted and visible on the back side of the display surface. The second image serving as the display is configured to display information regarding the charging state on the display unit.

As a result, the vehicle display device according to the embodiment of the present invention allows the user to easily grasp charging information regardless of whether the user is inside or outside the vehicle.

Hereinafter, a vehicle display device according to an embodiment of the present invention will be described in detail with reference to the drawings.

In FIG. 1, a vehicle 1 equipped with a vehicle display device according to an embodiment of the present invention includes an engine 2 as an internal combustion engine, a motor 3, a generator 4, an inverter 5, and a high voltage battery as a battery. 6, a display ECU (Electronic Control Unit) 7 as a display control section, a hybrid ECU 8, an engine ECU 9, and a battery ECU 10.

The engine 2 is constituted by a four-cycle engine that performs a series of four strokes consisting of an intake stroke, a compression stroke, an expansion stroke, and an exhaust stroke while the piston makes two reciprocations between the cylinders.

The engine 2 includes a fuel supply device (not shown). The fuel supply device has an injector 21 corresponding to each cylinder. The injector 21 is connected to the engine ECU 9, and the fuel injection timing and fuel injection amount are controlled by the engine ECU 9.

The motor 3 is, for example, a synchronous motor including a rotor in which a plurality of permanent magnets are embedded and a stator around which a stator coil is wound. In the motor 3, a three-phase AC voltage is applied to the stator coil to form a rotating magnetic field in the stator, and this rotating magnetic field causes the rotor to rotate and generate driving force.

Further, the motor 3 is driven so as to utilize rotational resistance during power generation for braking the vehicle 1. Thereby, the motor 3 has a function of generating electricity through regeneration. In this way, the motor 3 also functions as a generator and can generate electric power for charging the high voltage battery 6.

The generator 4 is mechanically connected to the engine 2, generates electricity using the power of the engine 2, and charges the high voltage battery 6.

The inverter 5 includes a motor ECU 51, a motor switching element 52, a generator ECU 53, and a generator switching element 54.

The motor ECU 51 is composed of a computer unit including a CPU (Central Processing Unit), a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory, an input port, and an output port. .

The ROM of this computer unit stores various control constants, various maps, etc., as well as a program for causing the computer unit to function as the motor ECU 51. That is, when the CPU executes the program stored in the ROM, the computer unit functions as the motor ECU 51. The motor ECU 51 is connected to the hybrid ECU 8 and the generator ECU 53, and exchanges data with each of these ECUs.

Various control objects including a motor switching element 52 are connected to the output port of the motor ECU 51 .

The motor switching element 52 converts the DC power supplied from the high voltage battery 6 into three-phase AC power through a switching process, and supplies the converted three-phase AC power to the motor 3 . The motor switching element 52 is controlled by the motor ECU 51 so that the output torque of the motor 3 becomes a desired value.

The motor switching element 52 stops operating (turns off) in response to a motor switching element forced cutoff signal from the hybrid ECU 8.

The generator ECU 53 is constituted by a computer unit including a CPU, a RAM, a ROM, a flash memory, an input port, and an output port.

The ROM of this computer unit stores various control constants, various maps, etc., as well as a program for causing the computer unit to function as the generator ECU 53. That is, when the CPU executes a program stored in the ROM, the computer unit functions as the generator ECU 53. The generator ECU 53 is connected to the hybrid ECU 8 and the motor ECU 51, and exchanges data with each of these ECUs.

Various control objects including the generator switching element 54 are connected to the output port of the generator ECU 53.

The generator switching element 54 converts AC power supplied from the generator 4 into DC power and supplies the DC power to the high voltage battery 6 . The generator switching element 54 is controlled by the generator ECU 53 so that the output torque of the generator 4 becomes a desired value.

Hybrid ECU 8 transmits a torque command signal to motor ECU 51, and causes motor ECU 51 to control motor 3 so that the output torque of motor 3 becomes the command torque set in the torque command signal. Further, the hybrid ECU 8 transmits a power generation torque command signal to the generator ECU 53, and causes the generator ECU 53 to control the generator 4 so that the output torque of the generator 4 becomes the target power generation torque set in the power generation torque command signal. Let it be controlled.

A smoothing capacitor 55 is connected to the positive and negative electrodes of the inverter 5 on the high voltage battery 6 side.

The high voltage battery 6 is made of, for example, a nickel storage battery, a lithium storage battery, or the like, and is configured by connecting a plurality of cells in series. High voltage battery 6 supplies power to motor 3 and generator 4 via inverter 5 . The cell voltage, temperature, charging current, and discharging current of each cell of the high voltage battery 6 can be detected by the battery ECU 10.

A contactor 12 is connected between the high voltage battery 6 and the inverter 5. Contactor 12 is turned on or off under the control of battery ECU 10 to connect (on) or disconnect (off) high voltage battery 6 and inverter 5 .

A charging plug of a DC power source of a charging station (not shown) as an external power source installed outside the vehicle 1 is connected to the high voltage battery 6, so that the high voltage battery 6 is charged with power supplied from the DC power source. A charger 13 is provided.

The charger 13 can detect whether the charging plug is fitted. The charger 13 notifies the battery ECU 10 of whether or not the charging plug is fitted, and whether the fitted charging plug is for quick charging or normal charging.

The display ECU 7 is constituted by a computer unit including a CPU, a RAM, a ROM, a flash memory, an input port, and an output port.

The ROM of this computer unit stores various control constants, various maps, etc., as well as a program for causing the computer unit to function as the display ECU 7. That is, the computer unit functions as the display ECU 7 by the CPU executing a program stored in the ROM. The display ECU 7 is connected to a battery ECU 10, a stereo camera 15 as an approach determination section, and an on-vehicle device 16 as an approach determination section, and exchanges data with each of these components.

The stereo camera 15 captures an image in front of the vehicle 1, performs predetermined image processing on the captured image, and detects an object existing in front of the vehicle 1 and a distance to the object. The approach determination section is not limited to the stereo camera 15, and may include a plurality of cameras capable of capturing images of the vicinity of the vehicle 1. The position of an object existing in the vicinity of the vehicle 1 can be specified from the images captured by these plurality of cameras.

The on-vehicle device 16 and the portable device 17 constitute a keyless entry system. The on-vehicle device 16 periodically transmits a wireless signal from an antenna (not shown), and the unlocking and locking of the vehicle 1 is controlled by the portable device 17 held by the user who approaches the vehicle 1 responding to the wireless signal. Ru.

The vehicle-mounted device 16 can identify whether the portable device 17 is inside the vehicle or outside the vehicle by changing the arrangement of the antenna or the transmission direction of the wireless signal. The on-vehicle device 16 transmits information such as whether or not a response from the portable device 17 has been received and whether the portable device 17 is inside or outside the vehicle to the display ECU 7.

Various control objects including a display 14 as a display section are connected to the output port of the display ECU 7.

The display 14 is composed of a transmissive liquid crystal or a transmissive organic EL (Electro-Luminescence) display. The display 14 is disposed at a position where its display surface faces the interior of the vehicle and is visible from both inside and outside the vehicle. Since the display 14 is of a transmissive type, the image displayed on the display surface can be viewed as an inverted image from the back side of the display surface.

For example, as shown in FIG. 2, the display 14 is placed on the front window, the stereo camera 15 is placed above the front window facing forward of the vehicle 1, and the on-vehicle device 16 is placed inside the vehicle. .

In FIG. 1, the hybrid ECU 8 is configured by a computer unit including a CPU, a RAM, a ROM, a flash memory, an input port, and an output port.

The ROM of this computer unit stores various control constants, various maps, etc., as well as a program for causing the computer unit to function as a hybrid ECU 8. That is, the computer unit functions as a hybrid ECU 8 by the CPU executing a program stored in the ROM. The hybrid ECU 8 is connected to an engine ECU 9, a battery ECU 10, a motor ECU 51, and a generator ECU 53, and exchanges data with each of these ECUs.

Various sensors including an accelerator opening sensor and a shift position sensor (not shown) are connected to the input port of the hybrid ECU 8.

Moreover, various control objects including the motor switching element 52 are connected to the output port of the hybrid ECU 8.

The engine ECU 9 is constituted by a computer unit including a CPU, a RAM, a ROM, a flash memory, an input port, and an output port.

The ROM of this computer unit stores various control constants, various maps, etc., as well as programs for causing the computer unit to function as the engine ECU 9. That is, the computer unit functions as the engine ECU 9 by the CPU executing a program stored in the ROM. Further, the engine ECU 9 is connected to the hybrid ECU 8 and exchanges data with each other.

Various sensors including an engine rotation speed sensor 22 are connected to an input port of the engine ECU 9. The engine rotation speed sensor 22 detects the engine rotation speed, which is the engine rotation speed of the engine 2 .

On the other hand, various control objects including the injector 21 are connected to the output port of the engine ECU 9.

The battery ECU 10 is constituted by a computer unit including a CPU, a RAM, a ROM, a flash memory, an input port, and an output port.

The ROM of this computer unit stores various control constants, various maps, etc., as well as a program for causing the computer unit to function as the battery ECU 10. That is, the computer unit functions as the battery ECU 10 by the CPU executing a program stored in the ROM. Further, the battery ECU 10 is connected to the display ECU 7, hybrid ECU 8, and charger 13, and exchanges data with each of these parts.

Various sensors of the high voltage battery 6 are connected to the input port of the battery ECU 10. On the other hand, various control objects including the contactor 12 are connected to the output port of the battery ECU 10.

The battery ECU 10 starts charging the high voltage battery 6 when the charging plug of the external power source is fitted into the charger 13 . The battery ECU 10 performs quick charging or normal charging depending on the type of charging plug fitted.

The battery ECU 10 calculates, based on the remaining charge of the high-voltage battery 6 and the amount of charge from an external power source, the time until charging is completed, the distance that can be traveled based on the current remaining charge of the high-voltage battery 6, and the like.

In such a vehicle 1, the hybrid ECU 8 controls various control objects based on information obtained from various sensors. For example, the hybrid ECU 8 calculates a target drive torque based on the accelerator opening and vehicle speed detected by the accelerator opening sensor, and controls the inverter 5 so that the motor 3 outputs the target drive torque to a drive shaft (not shown). Control.

Further, the hybrid ECU 8 calculates the power generation output required for the vehicle 1 based on the charging capacity of the high voltage battery 6, etc., and calculates the target engine rotation speed, target engine torque, and target power generation torque necessary to generate this power generation output. Calculate. The hybrid ECU 8 transmits the target engine speed and target engine torque to the engine ECU 9 to control the target engine speed and target engine torque, and also controls the inverter 5 to cause the generator 4 to output the target power generation torque. control.

In this embodiment, the display ECU 7 causes the display 14 to display information regarding the charging state of the high voltage battery 6 when the high voltage battery 6 is being charged by an external power source.

The display ECU 7 provides information regarding the charging state of the high-voltage battery 6, such as information regarding the charging time such as the remaining time until charging is completed and the scheduled charging completion time, information regarding the remaining amount of the high-voltage battery 6, and whether the charging is quick charging or normal charging. information regarding the charging mode, such as the charging mode, and information regarding the drivable distance, such as the drivable distance in the current state of charge of the high voltage battery 6, etc., are displayed.

The display ECU 7 can cause the display 14 to display a first image that is a regular display that is visible or legible on the display surface of the display 14 facing into the vehicle interior, as shown in FIG. 3(a), for example. .

The display ECU 7 can cause the display 14 to display, for example, a second image that is visible or readable in reverse on the back surface of the display 14 facing outside the vehicle interior, as shown in FIG. 3(b).

The display ECU 7, for example, is charging information to be displayed among the second images that are visible or readable and inverted on the back side of the display 14 facing outside the vehicle interior, as shown in FIG. 3(c). A third image limited to only information indicating a certain fact can be displayed on the display 14.

Note that FIG. 3 shows an image viewed from the display surface of the display 14, and when viewed from the back surface of the display 14, the image is reversed.

For example, as shown in FIG. 4A, the display ECU 7 displays the first image when it is determined by the stereo camera 15 or the onboard device 16 that there is no person near the vehicle 1 outside the vehicle interior. It is displayed on the display 14.

For example, the display ECU 7 causes the display 14 to display the second image when it is determined by the stereo camera 15 or the vehicle-mounted device 16 that there is a person near the vehicle 1 outside the vehicle interior.

For example, as shown in FIG. 4(b), the display ECU 7 uses the stereo camera 15 and the on-vehicle device 16 to detect whether a person A who is present near the vehicle 1 outside the vehicle interior is detected by the vehicle 1 on the back side of the display 14. If it is determined that the user is in front of the user, the second image is displayed on the display 14.

For example, as shown in FIG. 4(c), the display ECU 7 uses the stereo camera 15 and the on-vehicle device 16 to detect whether a person A who is present near the vehicle 1 outside the vehicle is in the vehicle on the display surface side of the display 14. If it is determined that the person is on the side or behind the person 1, the first image is displayed on the display 14.

For example, as shown in FIG. 5(a), the display ECU 7 uses the stereo camera 15 and the on-vehicle device 16 to detect whether a person B who is present near the vehicle 1 outside the vehicle is holding the portable device 17 in the vehicle 1. If it is determined that the user is in front of the vehicle 1 on the back side of the display 14, the second image is displayed on the display 14.

For example, the display ECU 7 detects from the stereo camera 15 or the in-vehicle device 16 that a person present near the vehicle 1 outside the cabin is a user of the vehicle 1 who has the portable device 17, and the display side of the display 14 If it is determined that the vehicle 1 is on the side or rear of the vehicle 1, the first image is displayed on the display 14.

For example, as shown in FIG. 5B, the display ECU 7 uses the stereo camera 15 and the on-vehicle device 16 to detect whether a person C who is outside the vehicle near the vehicle 1 is in the vehicle 1 without the portable device 17. If it is determined that the user is not the user of , and is located in front of the vehicle 1 on the back side of the display 14, the third image is displayed on the display 14.

In addition, if the person C who is present near the vehicle 1 outside the cabin is a person who is not a user of the vehicle 1 and does not have the portable device 17, in addition to the display indicating that charging is in progress, the person C who is present in the vicinity of the vehicle 1 may display a message indicating that the person is holding the portable device 17. The status of the person present may be displayed, for example, ``I am at a distance of XX meters,'' ``I will be back in XX minutes,'' or ``I won't be back for a while.''

Further, if it is determined that a person who is present near the vehicle 1 outside the vehicle interior is present in front of the vehicle 1, the second image is displayed on the condition that there is no user of the vehicle 1 inside the vehicle interior. You can do it like this.

As a result, when the user of vehicle 1 is inside the vehicle, the first image is displayed, so while giving priority to the display to the user of vehicle 1, the person outside the vehicle can easily check information regarding the charging status. I can do it.

The charging state display process by the vehicle display device according to the present embodiment configured as described above will be explained with reference to FIG. 6. Note that the charging state display process described below is started when the ignition key is turned off, executed at preset time intervals, and stopped when the ignition key is turned on.

In step S1, the display ECU 7 determines whether the charging plug of the external power source is fitted into the charger 13.

If it is determined that the charging plug is fitted into the charger 13, in step S2, the display ECU 7 determines whether or not charging has started. If it is determined that charging has not started, the display ECU 7 returns the process to step S1 and repeats the process.

If it is determined that charging has started, the display ECU 7 activates the display 14 in step S3.
In step S4, the display ECU 7 operates the stereo camera 15.

In step S5, the display ECU 7 determines a display image through processing to be described later.

In step S6, the display ECU 7 displays the determined image on the display 14, and ends the process.

If it is determined in step S1 that the charging plug is not fitted to the charger 13, the display ECU 7 prohibits the operation of the display 14 and the stereo camera 15 in step S7, and ends the process.

The display image determination process in step S5 in FIG. 6 will be described with reference to FIG. 7.
In step S11, the display ECU 7 uses the stereo camera 15 and the on-vehicle device 16 to determine whether or not there is a person near the vehicle 1 outside the cabin.

If it is determined that there is no person near the vehicle 1, in step S16, the display ECU 7 uses the first image as the display image and ends the process.

If it is determined that there is a person in the vicinity of the vehicle 1, the display ECU 7 determines whether or not there is a person in the vicinity of the vehicle 1 in front of the vehicle 1 in step S12.

If it is determined that there is no person in front of the vehicle 1, in step S16, the display ECU 7 uses the first image as the display image and ends the process.

If it is determined that a person is present in front of the vehicle 1, the display ECU 7 determines whether the portable device 17 has been detected by the on-vehicle device 16 in step S13.

If it is determined that the portable device 17 has been detected, in step S14, the display ECU 7 uses the second image as the display image and ends the process.

If it is determined that the portable device 17 is not detected, in step S15, the display ECU 7 uses the third image as the display image and ends the process.

As described above, in this embodiment, when the high-voltage battery 6 is being charged by an external power source and there is a person near the vehicle 1 outside the vehicle interior, the display ECU 7 displays a display that is visible from outside the vehicle interior. Information regarding the charging state is displayed on a display 14 using two images, and when there is no person near the outside of the vehicle 1, information regarding the charging state is displayed on the display 14 in a first image that is visible from inside the vehicle.

When a person outside the vehicle is approaching the vehicle 1, information regarding the charging state is displayed in reverse on the transparent display 14 so that it can be viewed from outside the vehicle, and when a person outside the vehicle is not approaching the vehicle 1. Since the image is displayed normally on the transparent display 14, it is possible to prevent an image directed toward the outside of the vehicle from being displayed even though a person is not near the vehicle 1 outside the vehicle. This allows users inside the vehicle to easily check information regarding the state of charge while preventing unnecessary displays from being displayed outside the vehicle.

Further, if it is determined that a person who is outside the vehicle interior and near the vehicle 1 is on the back side of the display 14, the second image is displayed on the display 14.

As a result, the second image is displayed on the condition that a person outside the vehicle is on the back side of the display 14, so the user outside the vehicle can check information regarding the charging state from various directions.

In addition, the display 14 is arranged in the front window, and when it is determined that a person who is outside the vehicle 1 is present in the front of the vehicle 1 on the back side of the display 14, a second image is displayed on the display 14. The first image is displayed on the display 14 when it is determined that a person existing near the vehicle 1 outside the cabin is on the side or rear of the vehicle 1 on the display surface side of the display 14.

A display 14 is arranged in front of the front seat, and when a person is present in front of the vehicle 1 during external charging, information regarding the charging state is displayed in reverse on a second image, and a person is present on the side or rear of the vehicle 1. In this case, the information regarding the state of charge is displayed normally in the first image, so that a person outside the vehicle can easily check the information regarding the state of charge no matter where he or she is near the vehicle 1.

Further, the display regarding the charging state on the display 14 is changed depending on whether or not a person existing near the outside of the vehicle 1 is a user of the vehicle 1.

Since the required charging status information is different for the user of vehicle 1 who is charging outside the vehicle and other people outside the vehicle, appropriate information is displayed in reverse video depending on the type of person outside the vehicle. By doing so, it is possible for people outside the vehicle to easily confirm appropriate information.

In addition, if the person present near the vehicle 1 outside the cabin is the user of the vehicle 1, the information regarding the charging state includes information regarding the charging time, information regarding the remaining amount of the high-voltage battery 6, information regarding the charging mode, and information regarding the ability to drive. Information regarding the distance, etc. is displayed, and if a person existing in the vicinity outside the cabin of the vehicle 1 is not the user of the vehicle 1, only information indicating that charging is in progress is displayed as information regarding the charging state.

If the user of vehicle 1 is in the vicinity of vehicle 1, the information required when using vehicle 1, such as charging time, remaining battery level, charging mode, and drivable distance, will be displayed in reverse video and other users of vehicle 1 will be able to see it. When a person is near the vehicle 1, only the fact that charging is in progress is displayed in reverse video, so that the person near the vehicle 1 can easily confirm necessary information.

Although the present embodiment shows the case where the display 14 is placed in the front window, it may be placed in front of the meter on the instrument panel as shown in FIG. 8(a).

Alternatively, as shown in FIG. 8(b), a HUD (Head-Up Display) may be used in which an image is projected from a projector 102 onto a combiner 101 placed in a front window. Furthermore, instead of projecting onto the combiner 101, it may be possible to project onto a front window. Further, a diffuser plate or a magnifying glass may be provided between the projector 102 and the combiner 101 or the front window.

In this embodiment, an example has been described in which the display ECU 7 performs various determinations and calculations based on various sensor information, but the present invention is not limited to this. Various judgments and calculations are made by devices outside the vehicle based on the detection information of various sensors sent from the communication section, the judgment results and calculation results are received by the communication section, and the received judgment and calculation results are used. Various controls may be performed.

Although embodiments of the invention have been disclosed, it will be apparent that modifications may be made by one skilled in the art without departing from the scope of the invention. All such modifications and equivalents are intended to be included in the following claims.

1 Vehicle 6 High voltage battery (battery)
7 Display ECU (display control unit)
13 Charger 14 Display (display section)
15 Stereo camera (approach determination section)
16 On-vehicle device (approach determination unit)
17 Portable device 101 Combiner 102 Projector

Claims (3)

A display device for a vehicle equipped with a battery that is charged by an external power source,
a display section that has a display surface facing the interior of the vehicle, is transparent, and is arranged at a position that is visible from both inside and outside the vehicle;
a display control unit that displays on the display screen an image that is a regular display from either the vehicle interior or the vehicle exterior;
An approach method that determines whether or not a person present near the vehicle outside the vehicle is a user of the vehicle, and determines in which direction the person present near the vehicle outside the vehicle is present with respect to the display unit. A determination section;
The display unit is arranged in the front part of the meter of the instrument panel of the vehicle or in the front window,
When the battery is connected to the external power source and the user is not present near the vehicle outside the vehicle, the display control unit charges the battery using a first image that is a normal display on the display screen. If information regarding the state is displayed on the display section, and the user is a person present in front of the vehicle outside the passenger compartment, the information regarding the charging state is displayed on the back side of the display surface using a second image that is a regular display. If the user is a person who is present near the vehicle outside the vehicle and is present on the side of the vehicle, information regarding the charging state is displayed on the display unit using the first image. Vehicle display device to display. 2. The display device for a vehicle according to claim 1, wherein the display control unit changes the display on the display unit depending on whether a person present near the vehicle outside the vehicle is a user of the vehicle. When it is determined that a person present near the vehicle outside the vehicle is a user of the vehicle, the display control unit displays information regarding the charging time, information regarding the remaining amount of the battery, and charging mode as the information regarding the charging state. information regarding the vehicle, and information regarding the drivable distance on the display section, and when it is determined that a person present near the vehicle outside the vehicle is not the user of the vehicle, information regarding the state of charge. The display device for a vehicle according to claim 2, wherein information indicating that the battery is being charged is displayed on the display unit.

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