JP2010127673A - Input device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an input device for vehicle, capable of accurately performing input operation to an operation part, attaining both safe driving and convenience. <P>SOLUTION: The input device for vehicle includes: a display part 2, installed at a position which is at least viewable from an occupant on a driver's seat 4; the operation part 7, which is associated with the display content of the display part 2 and to the operation part 7 the driver performs the input operation; an effective field of view detecting section 10e detecting the effective field of view of the driver; a vehicle speed detecting part 10g detecting the vehicle speed; and a control part 10 provided communicable with the display part 2, the operation part 7, the effective field of view detection part 10e, and the vehicle speed detection part 10g, and controlling the effectiveness and the ineffectiveness of the input operations to the operation part 7. The control part 10 invalidates the input operation to the operation part 7, when the vehicle speed detected by the vehicle speed detecting part 10g is not less than a prescribed speed, and when the effective field of view of the driver detected by the effective field of view detecting part 10e overlaps the display part 2 or the operation part 7. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle input device.

Conventionally, the technique of patent document 1 is known as an input device for vehicles.
According to the present invention, when the driver's face of the driver's seat faces the front, the input operation to the operation unit by the passenger in the passenger's seat is validated, and the driver's seat's face is removed from the front. Invalidates the input operation to the operation unit (see Patent Document 1).
JP 2007-17409 A

  However, in the conventional invention, since the input operation to the operation unit is invalidated / validated by the direction of the face of the driver's seat occupant, for example, the driver's seat occupant sideways for safety confirmation When viewing (for example, when confirming the rear of the vehicle with a side mirror), there is a problem that the input operation to the operation unit becomes invalid in spite of no problem in safe driving.

  The present invention has been made to solve the above-described problems, and the object of the present invention is to perform an input operation to the operation unit with high accuracy, and to achieve both safe driving and convenience. It is possible to provide an input device for a vehicle that can achieve both safe driving and convenience.

  In the first aspect of the present invention, the display unit installed at a position visible from the driver's seat passenger and the passenger in the front passenger seat, and the display content of the display unit, which is associated with the display content of the driver's seat and front passenger seat An operation unit that is operated by input, an effective visual field detection unit that detects an effective visual field of the driver's seat occupant, a vehicle speed detection unit that detects a vehicle speed, the display unit, an operation unit, an effective visual field detection unit, and a vehicle speed detection And a control unit that controls the validity and invalidity of the input operation to the operation unit, and the control unit has a vehicle speed detected by the vehicle speed detection unit equal to or higher than a predetermined speed, and When the effective visual field of the occupant in the driver's seat detected by the effective visual field detection unit overlaps the display unit or the operation unit, the input operation to the operation unit is invalidated.

In the first aspect of the present invention, the control unit is configured such that the vehicle speed detected by the vehicle speed detection unit is equal to or higher than a predetermined speed, and the effective field of view of the passenger in the driver's seat detected by the effective field detection unit When they overlap, the input operation to the operation unit is invalidated.
Thereby, the input operation to the operation unit can be performed with high accuracy, and both safe driving and convenience can be achieved.

  Embodiments of the present invention will be described below with reference to the drawings.

Example 1 will be described below.
In the first embodiment, an example in which the vehicle input device is applied to a navigation device will be described.
FIG. 1 is a front view of a vehicle interior in which the vehicular input device of the first embodiment is adopted, FIG. 2 is a system configuration diagram of a navigation apparatus in which the vehicular input device of the first embodiment is adopted, and FIG. It is a flowchart figure explaining the control processing by the control part.

First, the overall configuration will be described.
As shown in FIG. 1, in the navigation apparatus 1 in which the vehicle input device according to the first embodiment is adopted, a display unit (display screen) 2 is provided between the driver seat 4 side and the passenger seat 5 side of the instrument panel 3. It has been.
The display unit 2 has a predetermined area range X1 at a position that is visible from an occupant of the driver's seat 4 (hereinafter referred to as a driver) and an occupant of the passenger seat 5 (hereinafter referred to as a passenger). It is provided for.

Further, at a position close to the lower side of the display unit 2, an operation unit 7 including a plurality of operation switches and an operation dial 6 that are associated with the display contents of the display unit 2 and are operated to be input by the driver and the passenger is provided in a predetermined manner. It has an area range X2 and is provided toward the vehicle interior.
A camera 9 for detecting the driver's line of sight is provided on the steering column 8.

The navigation device 1 includes a control unit 10 that can control the validity and invalidity of the operation input of the operation unit 7.
As shown in FIG. 2, the control unit 10 includes a CPU 10a (Central Processing Unit), a ROM 10b (Read Only Memory), a RAM 10c (Random Access Memory), an input operation switching unit 10d, an effective visual field detection unit 10e, An occupant detection unit 10f, a vehicle speed detection unit 10g, and a timer T0 are provided.
The control unit 10 is electrically connected to the occupant detection sensor 10h, the vehicle speed sensor 10i (wheel speed sensor), and the parking brake ON / OFF state sensor 10j in addition to the display unit 2, the operation unit 7, and the camera 9 described above. Is configured to be communicable.

The occupant detection sensor 10h is a pressure sensor (not shown) provided in the passenger seat 5 and outputs a signal to the occupant detection unit 10f when pressure is detected by the passenger sitting in the passenger seat 5.
The vehicle speed sensor 10i (wheel speed sensor) detects the vehicle speed and outputs a signal to the vehicle speed detection unit 10g.
The parking brake ON / OFF state sensor 10j detects the ON / OFF state of the parking brake and outputs a signal to the control unit 10.

The input operation switching unit 10d switches between enabling and disabling the input operation to the operation unit 7 according to a command signal from the CPU 10a.
Thus, when the input operation to the operation unit 7 is invalidated by the control unit 10, the operation unit 7 does not accept the input operation even if the driver or the passenger inputs the operation unit 7.
As a supplement, when the input operation to the operation unit 7 becomes invalid, the map and the guide route that are being displayed on the display unit 2 do not disappear, and these continue to be displayed and operated.
At this time, a message that the input operation is invalid may be temporarily displayed on the display unit 2 or may be notified by voice.

The effective visual field detection unit 10e images the driver's face with the camera 9, detects the line of sight from the obtained image, and then detects the driver's effective visual field.
In addition, since the detection method of a driver | operator's eyes | visual_axis is the same as the technique of patent 397725 and patent 4032994, the description is abbreviate | omitted.

The effective visual field of the driver of the first embodiment is a range that can be utilized when the driver inputs the operation unit 7 and understands the contents of the display unit 2 mainly according to the vehicle speed.
Therefore, in Example 1, the effective visual field becomes narrower as the vehicle speed increases.
In addition to vehicle speed, driving environment (high speed, road environment such as urban area, weather, day and night, etc.), driver characteristics (man and woman, age, operation characteristics), display / operation section characteristics (display contents (characters / buttons), size, The effective visual field is changed according to the display color, brightness, contrast, and the like.
For example, when the display content is a sentence, the effective visual field is narrowed.
Moreover, the effective visual field detection part 10e makes the whole range the effective visual field, when a driver | operator's eyes | visual_axis cannot be detected.

  The occupant detection unit 10f detects the presence or absence of a passenger based on a signal from the occupant detection sensor 10h.

Next, the operation will be described.
<Control processing for enabling / disabling input operations by the control unit>
Next, based on the flowchart of FIG. 3, control processing for validating and invalidating the input operation by the control unit 10 according to the first embodiment will be described.
The control processing described below is processing that is repeatedly performed at predetermined time intervals while the vehicle is traveling, and it is determined that the vehicle is stopped based on the detection results of the vehicle speed sensor 10i and the parking brake ON / OFF state sensor 10j. If canceled, it will be canceled.

  In step S1 of FIG. 3, first, the control unit 10 validates the input operation to the operation unit 7, and proceeds to step S2.

Next, in step S2, the control unit 10 acquires the vehicle speed V from the vehicle speed detection unit 10g, determines whether or not the vehicle speed V is greater than the vehicle speed Va, and if so, proceeds to step S3, In the case of Va or less, the vehicle speed V is acquired again and this determination is repeated.
The reacquisition of the vehicle speed V may be performed after a predetermined time has elapsed.

  Next, in step S3, the control unit 10 invalidates the input operation to the operation unit 7, and proceeds to step S4.

  Next, in step S4, the control unit 10 acquires the presence / absence of a passenger from the passenger detection unit 10f. If there is a passenger, the control unit 10 proceeds to step S5, and if there is no passenger, the process ends. To do.

  Next, in step S5, the control part 10 acquires a driver | operator's effective visual field from the effective visual field detection part 10e, and transfers to step S6.

Next, in step S6, the control unit 10 determines whether or not the effective visual field overlaps the display unit 2 or the operation unit 7, and if not, the control unit 10 proceeds to step S7 and activates the timer T0. Thereafter, the process proceeds to step S8.
The timer T0 continues measuring until it is reset.

  On the other hand, when the effective visual field overlaps the display unit 2 or the operation unit 7, the process proceeds to step S10, the timer T0 is reset, and then the process returns to step S5.

Next, in step S8, the control unit 10 determines whether or not the timer T0 has reached the predetermined time t0 from the start of its operation. If the timer T0 has reached the predetermined time t0, the control unit 10 proceeds to step S9. Returns to step S5.
Here, the predetermined time t0 is a threshold value for determining that this state continues and the driver gazes ahead of the vehicle according to the driving situation, and this value (time) is It is set from a database based on vehicle speed, driving environment, driver characteristics, and the like. For example, the predetermined time t0 is preferably set to 1.5 seconds or less.

  Finally, in step S9, the control unit 10 validates the input operation to the operation unit 7 and ends the process.

Next, the operation of the first embodiment will be described.
In the navigation device 1 configured as described above, first, the input operation to the operation unit 7 is in an effective state as an initial state, and then the input operation to the operation unit 7 is invalidated when the vehicle speed V becomes higher than the vehicle speed Va. (Step S1 → Step S2 → Step S3).
Thereby, when the vehicle speed V is lower than the vehicle speed Va, an input operation to the operation unit 7 by a driver or a passenger is possible even during traveling.
It should be noted that possible input operations at this time may be limited to some extent.

When the vehicle speed V becomes higher than the vehicle speed Va, the presence / absence of a passenger is detected, and when there is no passenger, the invalidation of the input operation to the operation unit 7 is maintained (step S4 → step S1).
Thereby, when the vehicle speed V becomes higher than the vehicle speed Va, the driver cannot perform an input operation to the operation unit 7 unless there is a passenger.

On the other hand, when there is a passenger, it is determined whether the driver is viewing the display unit 2 (area range X1) or the operation unit 7 (area range X2), and the driver displays the display unit 2 or the operation unit 7. If not, the duration is measured by the timer T0 (step S5 → step S6 → step S7).
When the state where the driver does not look at the display unit 2 or the operation unit 7 continues for a predetermined time t0, the input operation to the operation unit 7 becomes valid (step S8 → step S9).
Further, the invalidation of the input operation to the operation unit 7 is maintained until the predetermined time t0 is reached (step S8 → step S5).
Thereby, the passenger can perform an input operation to the operation unit 7 after a predetermined time t0 has elapsed since it is determined that the driver is not viewing the display unit 2 or the operation unit 7.

  On the other hand, when the driver looks at the display unit 2 or the operation unit 7, the invalidity of the input operation is maintained (step S6 → step S10 → step S5).

Next, the effect of Example 1 will be described.
As described above, in the navigation device 1 according to the first embodiment, the input operation to the operation unit 7 performed when the driver's line of sight is in the normal driving state, when viewed rearward by the side mirror, or the like, 7 is determined to be an input operation to the operation unit 7, and the input operation to the operation unit 7 is validated.
Thereby, it is possible to prevent the input operation to the operation unit 7 from being invalidated due to the movement of the line of sight by the driver's safety confirmation.

  In addition, since the operation of the navigation device 1 usually has a hierarchical structure, it can be determined to some extent whether the driver is looking at the display unit 2 for operation or simply for obtaining information.

  Further, by changing the predetermined time t0 according to the driving situation and the driving load and characteristics of the driver, it is possible to achieve both operability, convenience and safety.

In addition, the operability, convenience, and safety can both be achieved by changing the effective visual field range of the driver according to the driving situation such as vehicle speed increase, driver load, characteristics, and display contents.
For example, in the first embodiment, the effective field of view is narrowed when the vehicle speed increases or when the display content is text. As a result, the range in which the effective field of view overlaps the display unit 2 or the operation unit 7 is reduced, so that the input operation to the operation unit 7 is not easily invalidated, and the input operation to the operation unit 7 by the passenger is unnecessarily invalidated. The number of cases to be reduced.

Furthermore, the effective visual field detection unit 10e makes the entire visual field effective when the driver's effective visual field cannot be detected. In this case, the effective visual field overlaps the display unit 2 or the operation unit 7. The invalidity of the input operation to the operation unit 7 is maintained (step S6 → step S10 → step S5).
Thereby, for example, when the driver wears sunglasses and the line of sight cannot be detected, that is, when the effective visual field cannot be detected, the input operation to the operation unit 7 becomes invalid, which leads to promoting safe driving. .

Next, the effect of Example 1 is described with (1)-(6) corresponding to Claims 1-3 and 5-7.
(1) Display unit 2 installed at a position visible from the driver of driver's seat 4 and the passenger of passenger's seat 5 and the display content of display unit 2, and input operation is performed by the driver and passengers. An operation unit 7, an effective visual field detection unit 10e for detecting the driver's effective visual field, a vehicle speed detection unit 10g for detecting the vehicle speed, a display unit 2, an operation unit 7, an effective visual field detection unit 10e, and a vehicle speed detection unit 10g; The control unit 10 is provided so as to be communicable, and controls the validity and invalidity of the input operation to the operation unit 7. The control unit 10 has a vehicle speed detected by the vehicle speed detection unit 10g equal to or higher than a predetermined speed and an effective field of view. When the effective visual field of the driver detected by the detection unit 10e overlaps the display unit 2 or the operation unit 7, the input operation to the operation unit 7 is invalidated.
Thereby, the input operation to the operation unit 7 can be performed with high accuracy, and both safe driving and convenience can be achieved.

(2) The occupant detection unit 10f capable of detecting the presence or absence of a passenger is provided, and the control unit 10 has a vehicle speed detected by the vehicle speed detection unit 10g equal to or higher than a predetermined speed, and no passenger is detected by the occupant detection unit 10f. In this case, the input operation to the operation unit 7 is invalidated.
As a result, when the vehicle speed is equal to or higher than the predetermined speed and there is no passenger, the input operation to the operation unit 7 becomes invalid, and safe driving can be improved.

(3) When the passenger is detected by the occupant detection unit 10f, the control unit 10 detects the driver's effective field of view with the effective field detection unit 10e, and the display unit 2 or the operation unit detects the effective field of view. If the display unit 2 or the operation unit 7 does not overlap the detected effective field of view, this state is maintained for a first predetermined time (predetermined time t0). The input operation to the operation unit 7 is made valid only when the operation is continued for a).
Thereby, in addition to the effect | action and effect similar to (1) and (2), safety | security can be improved further.

(4) The effective visual field detection unit 10e sets, as the effective visual field, a range that can be utilized when the driver inputs the operation unit 7 and understands the contents of the display unit 2 according to the traveling state.
Thereby, an effective visual field can be changed according to a driving | running | working condition, and both safety and convenience can be aimed at.

(5) When the effective visual field detection unit 10e cannot detect the effective visual field, the control unit 10 invalidates the input operation to the operation unit 7.
Thereby, safety can be further improved.

(6) The display unit 2 is a display screen of the navigation device 1, and the operation unit 7 is an operation switch of the navigation device 1.
Thereby, it becomes particularly suitable for use in the navigation device 1 where the driver is particularly easy to gaze at the time of traveling.

Example 2 will be described below.
In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, the description thereof will be omitted, and only the differences will be described in detail.

  FIG. 4 is a flowchart for explaining a control process during an input operation to the operation unit according to the second embodiment.

In the second embodiment, when the input operation to the operation unit 7 is validated in step S9 of the first embodiment, the control process when the input operation to the operation unit described below is valid is performed according to the first embodiment. And different.
In addition, the control unit 10 includes timers T1 to T3 described later.

  As shown in FIG. 4, in step S20 of the process when the input operation to the operation unit is valid, first, the control unit 10 acquires the driver's effective visual field from the effective visual field detection unit 10e, and proceeds to step S21.

  Next, in step S21, the control unit 10 determines whether or not the effective visual field overlaps the display unit 2 or the operation unit 7. If the effective visual field overlaps, the control unit 10 proceeds to step S22.

Next, in step S22, the control unit 10 activates the timer T1 and the timer T2, respectively, resets the timer T3, and then proceeds to step S23.
The timers T1 to T3 continue to measure until they are reset or temporarily stopped.

Next, in step S23, the control unit 10 determines whether or not the timer T1 has reached the predetermined time t1 from the start of its operation, and when it has reached the predetermined time t1, the process proceeds to step S24.
Here, the predetermined time t1 is a threshold value for determining that the driver keeps observing the front of the vehicle according to the traveling situation and this state continues, and this value (time) is It is set from a database based on vehicle speed, driving environment, driver characteristics, and the like.

  Next, in step S24, after invalidating the input operation to the operation unit 7, the control unit 10 returns to step S3 described in FIG. 3 of the first embodiment. Of course, at this time, the timers T1 to T3 are reset.

  In step S21, if the effective visual field does not overlap the display unit 2 or the operation unit 7, the control unit 10 proceeds to step S25, resets the timer T1, pauses the timer T2, and activates the timer T3. Then, the process proceeds to step S26.

Next, in step S26, the control unit 10 determines whether or not the timer T3 has reached a predetermined time t3 from the start of its operation. If the predetermined time t3 has been reached, the control unit 10 proceeds to step S27 and has not reached it. If so, the process returns to step S20.
Here, the predetermined time t3 is a threshold value for determining that this state continues and the driver gazes ahead of the vehicle according to the traveling state, and this value (time) is It is set from a database based on vehicle speed, driving environment, driver characteristics, and the like.

  Next, in step S27, the control unit 10 resets the timer T2 and returns to step S20.

  In step S23, if the timer T1 has not reached the predetermined time t1 from the start of its operation, the process proceeds to step S28 to determine whether the timer T2 has reached the predetermined time t2, and has reached the predetermined time t2. If so, the process proceeds to step S24, and if not, the process returns to step S20.

Next, the operation of the second embodiment will be described.
As described above, in the navigation device 1 according to the second embodiment, when the operation input becomes valid, it is determined whether or not the driver is viewing the display unit 2 or the operation unit 7. It is measured at T1 (step S20 → step S21 → step S22).

When the state where the driver is viewing the display unit 2 or the operation unit 7 continues for a predetermined time t1, the input operation to the operation unit 7 becomes invalid (step S22 → step S23 → step S24).
On the other hand, when the driver looks at the display unit 2 or the operation unit 7 and does not reach the predetermined time t1, the time that the driver has viewed the display unit 2 or the operation unit 7 at that time is the timer T2. Accumulated (step S23 → step S28).
When the accumulated timer T2 reaches a predetermined time t2, that is, when the driver continues to watch the display unit 2 or the operation unit 7 intermittently, and the total time of viewing is the predetermined time t2, the operation is performed. The input operation to the unit 7 becomes invalid (step S28 → step S24). This total time is, for example, around 8 seconds.
As a result, the driver can intentionally continue to view the display unit 2 or the operation unit 7 intermittently within a short period of time equal to or less than the predetermined time t1, thereby maintaining the effectiveness of the input operation to the operation unit 7. Can be prevented, leading to improved safe driving.

On the other hand, when the driver does not look at the display unit 2 or the operation unit 7, the continuation time during which the driver is not looking is measured by the timer T3 (step S21 → step S25).
When the timer T3 reaches a predetermined time t3, that is, when the state where the driver does not look at the display unit 2 or the operation unit 7 continues for the predetermined time t3, the timer T2 is reset and the input operation to the operation unit 7 is performed. Effectiveness is maintained. (Step S26 → Step S27 → Step S20).
Further, until the predetermined time t3 is reached, the validity of the input operation to the operation unit 7 is maintained while the timer T3 is activated. (Step S26 → Step S20).

Next, the effect of Example 2 will be described.
In the navigation device 1 according to the second embodiment configured as described above, when the input operation to the operation unit 7 is valid, when the driver's line of sight stops on the display unit 2 or the operation unit 7 for a predetermined time t1 or more, or When the total time reaches the predetermined time t2, the driver's attention concentrates on the navigation device 1 even if the passenger inputs the operation to the operation unit 7. The input operation to 7 is disabled.
Thereby, even if the input operation is performed by the passenger, it is possible to prevent the driver from gazing at the operation result of the display unit.
In particular, it is possible to prevent the driver from paying attention to the passenger's input operation, and the situation where the gaze time for one time is short, but it is repeated many times in a short time, preventing the driver from looking aside. Therefore, safety can be improved.

  In addition, even if the driver performs an input operation to the operation unit 7 while traveling, the operation unit 7 is used in the case of a simple operation with a short gaze stop time on the display unit 2 or the operation unit 7 by the driver's line of sight. Therefore, for example, the scale of the map can be changed and the convenience can be ensured.

  In addition, by changing the predetermined times t1 to t3 according to the driving situation and the driving load and characteristics of the driver, both operability, convenience and safety can be achieved.

Finally, the effect of the second embodiment will be described together with (7) corresponding to claim 4.
(7) When the state in which the display unit 2 or the operation unit 7 overlaps the detected effective visual field continues intermittently, only the time when the effective visual field is entered is accumulated, and the operation unit 7 When the input operation is validated and the accumulated time reaches the second predetermined time (predetermined time t2), the input operation to the operation unit 7 is invalidated.
As a result, when the driver intentionally continuously displays the display unit 2 or the operation unit 7, it is possible to prevent the validity of the input operation to the operation unit 7 from being maintained, leading to an improvement in safe driving. .

Although the embodiments have been described above, the present invention is not limited to the above-described embodiments, and design changes and the like within the scope not departing from the gist of the present invention are included in the present invention.
For example, since the operation unit 7 is generally composed of a plurality of operation switches and operation dials, it is possible to control the validity and invalidity of input operations of only some of the operation units 7.
Further, when the input operation is validated, it may be validated only for the input operation with a small number of times. That is, when the display content of the display unit has a hierarchical structure, only the display content arranged in a relatively shallow hierarchy can be displayed by an input operation.

  Also, it is of course possible to display various information such as air conditioning, audio, television, Internet, etc. on the display unit 2 of the navigation device 1 of the first embodiment, and to set / change these by an input operation to the operation unit. In this case, the same actions and effects as those of the present invention can be obtained.

It is a figure which shows the vehicle interior front where the input device for vehicles of Example 1 was adopted. 1 is a system configuration diagram of a navigation device that employs an input device for a vehicle. FIG. 5 is a flowchart illustrating a control process performed by a control unit according to the first embodiment. FIG. 10 is a flowchart illustrating a control process when an input operation is performed on the operation unit according to the second embodiment.

Explanation of symbols

T0, T1, T2, T3 Timer 1 Navigation device 2 Display unit 3 Instrument panel 4 Driver's seat 5 Passenger's seat 6 Operation switch and operation dial 7 Operation unit 8 Steering column 9 Camera 10 Control unit 10a CPU
10b ROM
10c RAM
10d Input operation switching unit 10e Effective visual field detection unit 10f Occupant detection unit 10g Vehicle speed detection unit 10h Occupant detection sensor 10i Vehicle speed sensor 10j Parking brake ON / OFF state sensor

Claims (7)

A display unit installed at a position visible from the driver's occupant and passenger in the passenger seat;
An operation unit that is associated with the display content of the display unit and is operated to be input by a driver seat passenger and a passenger seat passenger;
An effective visual field detector for detecting an effective visual field of the driver's occupant;
A vehicle speed detector for detecting the vehicle speed;
The display unit, the operation unit, the effective visual field detection unit, and a vehicle speed detection unit are provided to be communicable, and includes a control unit that controls the validity and invalidity of the input operation to the operation unit,
When the vehicle speed detected by the vehicle speed detection unit is equal to or higher than a predetermined speed, and the effective visual field of the driver's seat occupant detected by the effective visual field detection unit overlaps the display unit or the operation unit. An input device for a vehicle, wherein an input operation to the operation unit is invalidated. The vehicle input device according to claim 1,
Equipped with an occupant detector that can detect the presence or absence of a passenger in the passenger seat,
The control unit invalidates an input operation to the operation unit when the vehicle speed detected by the vehicle speed detection unit is equal to or higher than a predetermined speed and the passenger detection unit does not detect the passenger in the passenger seat. A vehicle input device. The vehicle input device according to claim 2,
When the occupant detection unit detects the passenger in the passenger seat, the control unit detects the effective field of view of the occupant in the driver seat with the effective visual field detection unit, and the display unit or the operation unit overlaps the detected effective visual field. If this happens, disable the input operation to the operation unit,
When the display unit or the operation unit does not overlap with the detected effective visual field, the input operation to the operation unit is validated only when this state continues for the first predetermined time. Input device. The vehicle input device according to claim 3,
When the state where the display unit or the operation unit overlaps the detected effective visual field continues intermittently, the control unit accumulates only the time when the control unit is in the effective visual field and Enable input operation,
When the accumulated time reaches a second predetermined time, an input operation to the operation unit is invalidated. In the vehicle input device according to any one of claims 1 to 4,
The effective visual field detection unit sets an effective visual field as a range that can be utilized when a passenger in the driver's seat inputs and operates the operation unit to understand the contents of the display unit according to a driving situation. Input device. In the vehicle input device according to any one of claims 1 to 5,
The control unit invalidates an input operation to the operation unit when the effective visual field detection unit cannot detect the effective visual field. In the vehicle input device according to any one of claims 1 to 6,
The display unit is a display screen of a navigation device,
An input device for a vehicle, wherein the operation unit is an operation switch of the navigation device.

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