JP5477158B2 - Vehicle display device - Google Patents

Vehicle display device Download PDF

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Publication number
JP5477158B2
JP5477158B2 JP2010112998A JP2010112998A JP5477158B2 JP 5477158 B2 JP5477158 B2 JP 5477158B2 JP 2010112998 A JP2010112998 A JP 2010112998A JP 2010112998 A JP2010112998 A JP 2010112998A JP 5477158 B2 JP5477158 B2 JP 5477158B2
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vehicle
display area
display
display unit
risk
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JP2011240766A (en
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則雄 小坂
和弘 竹藤
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日産自動車株式会社
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Description

  The present invention relates to a vehicle display device that displays a warning to an occupant by changing the display form of a display unit according to the vehicle state of the host vehicle, for example.

  For example, a warning lamp for warning a vehicle abnormality is provided on a meter panel of an automobile. The warning light is turned off when there is no abnormality, and is turned on when there is an abnormality to warn an occupant (driver) (for example, described in Patent Document 1).

JP-A-2005-43215

  Conventional vehicle display devices are designed to warn occupants by lighting a warning light when an abnormality occurs in the vehicle, so that the abnormality is an urgent matter or not urgent. It was not something to inform about.

  Therefore, when the vehicle information is information related to the vehicle that is to be actively notified to the occupant, the information is displayed so that the occupant can recognize it immediately, and if the information is not to be actively notified to the occupant, It is desirable to change the display method according to the information, such as not actively reporting so that the user can concentrate on driving.

  SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and informs the occupant by changing the display form of information that is not to be actively notified when it is information relating to the vehicle state to be actively notified to the occupant. An object of the present invention is to provide a display device for a vehicle that can be made to operate.

The vehicle display device of the present invention has detection means for detecting the degree of danger or urgency with respect to the host vehicle. Further, the device of the present invention expands and changes the display area of the display unit in a direction to alert the occupant according to the degree of risk or urgency detected by the detection means, and also changes the display area. There is provided a means for varying.

  According to the vehicle display device according to the present invention, the display area of the display unit changes and the change speed of the display area varies according to the degree of risk or urgency with respect to the host vehicle detected by the detection means. When the degree of danger or urgency is high, the display area is changed and the speed of changing the display area is changed so that the occupant can immediately recognize it. When the degree of danger or urgency is low, the display area of the display unit is changed. By changing the variable state and the variable state of the variable speed of the display area, the occupant can recognize the driver so that he can concentrate on driving.

FIG. 1 is a block diagram showing the system configuration of the vehicle display device of the present embodiment. FIG. 2 is a flowchart showing display operation processing in the vehicle display device of this embodiment. FIG. 3 is a view showing an example in which the vehicle display device of the present embodiment is provided in a meter of an instrument panel. FIG. 4 is a state change diagram when the display area of the display unit in the vehicle display device of the present embodiment is changed in the horizontal direction. FIG. 5 is a correlation diagram between the risk level and the display area when the display area of the display unit is changed in accordance with the risk level of the host vehicle in the vehicle display device of the present embodiment. FIG. 6 is a correlation diagram between the risk level and the display area change rate when the display area change rate of the display unit is changed according to the risk level of the host vehicle in the vehicle display device of the present embodiment. FIG. 7 shows another embodiment, and is a relationship diagram between the degree of risk, the display area, and the display area change speed when the display area of the display unit and the display area change speed are changed according to the risk of the host vehicle. . FIG. 8 shows another embodiment, and is a state change diagram when the display unit is changed in the circumferential direction. FIG. 9 shows another embodiment, and is a state change diagram when the display area change of the display unit is enlarged in a direction to alert the occupant.

  Embodiments of a vehicle display device to which the present invention is applied will be described below with reference to the drawings. FIG. 1 is a block diagram showing a system configuration of a vehicle display device, FIG. 2 is a flowchart showing display operation processing, and FIG. 3 is an example in which a display unit of the vehicle display device of the present embodiment is provided in a meter of an instrument panel. FIG. 4 is a state change diagram when the display area of the display unit is changed in the horizontal direction. FIG. 5 is a relationship between the risk level and the display area when the display area of the display unit is changed according to the risk level. FIG. 6 and FIG. 6 are relationship diagrams between the risk level and the area change speed when the display area change speed of the display unit is changed according to the risk level.

[Description of configuration of vehicle display device]
First, the configuration of the vehicle display device of the present embodiment will be described. In the vehicle display device of the present embodiment, the vehicle speed sensor 1 shown in FIG. 1 detects the vehicle speed of the host vehicle (hereinafter simply referred to as the vehicle speed). The vehicle speed of the other vehicle is detected based on image information captured by the camera 2 mounted on the host vehicle. The camera 2 images the front, side, and rear of the host vehicle, and detects objects (objects including other vehicles) around the host vehicle. The steering angle sensor 3 detects that the driver who is a passenger turns the steering wheel of the own vehicle to the right or left.

  The vehicle status detection means 4 detects the degree of danger for the host vehicle. Specifically, the vehicle status detection means 4 is determined from information such as the speed of the host vehicle, the speed of the other vehicle, and the relative position between an object (for example, another vehicle) around the host vehicle and the host vehicle. The degree of danger to the vehicle is obtained from the vehicle speed sensor 1, the camera 2 and the steering angle sensor 3.

  The display area change calculation means 5 determines the risk S from the relative distance of the host vehicle to other vehicles, and calculates a value for changing the display area A of the display unit according to the risk S from the correlation diagram of FIG. . For example, when another vehicle approaches from behind the host vehicle, the risk S is high if the relative distance of the other vehicle to the host vehicle is short. On the other hand, another vehicle is approaching from behind the host vehicle. However, when the relative distance of the other vehicle to the host vehicle is long, the risk S is assumed to be low.

  In FIG. 5, a risk level S is determined for each range of relative distances of other vehicles with respect to the host vehicle (meaning each relative distance having an arbitrary range), and the display area A of the display unit is set for each risk level S. The number of risks is determined, and the risk S and the display area A are correlated. For example, when the risk level is S1, the display area is set as the display area A1, and when the risk level is higher than the risk level S1, the display area A2 is set to be wider than the display area A1. As the risk level S increases from low to high, the display area A is increased from small to large.

  The display area change speed calculation means 6 calculates a risk T that is different from the risk S shown in FIG. 5 and a display area change speed V that is a speed for changing the display area A of the display unit according to the risk T. It is calculated from the correlation diagram of FIG. The risk level T shown in FIG. 6 is a level of risk when the driver tries to change the right lane after detecting the relative distance and relative speed between the host vehicle and another vehicle traveling in the right lane, for example.

  For example, when the other vehicle is traveling in the lane adjacent to the host vehicle and the other vehicle is approaching at a higher speed than the host vehicle, the risk T is set by turning the steering wheel to the lane on which the other vehicle is traveling. When trying to change the lane, the risk level T is high. However, if the lane is not changed even in the same situation, the other vehicle only passes by passing the own vehicle, so the risk T is low. When the risk level T1 is low, the display area change speed V1 is slowed down, and when the risk level T2 is higher than that, the display area change speed V2 is set faster.

  The display device actuating means 7 changes the display area A of the display unit to a large or small size, or changes the display area change speed of the display unit to a high or low level.

  As shown in FIG. 3, the display unit 8 is incorporated in the meter 9 of the instrument panel. The display unit 8 is provided at the upper part of the meters 10, 11, and 12 that are visible to the driver. In addition, the display unit 8 is set at a position where the driver can easily recognize when actively notifying the driver during the vehicle driving operation.

  The display unit 8 is turned on when the ignition is turned on. The display unit 8 includes a plurality of LEDs 13, for example. In the normal state, the display unit 8 has an elliptical display area (lighting area of the LED 13) as shown in FIG. 4A, and the display area A is shown in FIG. As shown, it changes so as to spread in the long axis direction (lateral direction). In order to change the display area A of the display unit 8 so as to spread in the horizontal direction, the number of the plurality of LEDs 13 to be lit is increased so that the lighting state is a horizontally long elliptical shape.

  The display form of the display unit 8 is an elliptical shape, but is not limited to this shape. Further, the display unit 8 may be constituted by an assembly of light bulbs or a liquid crystal monitor in addition to the plurality of LEDs 13. In short, any display mechanism unit can be used as long as the display area of the display unit 8 can be changed in size and the display area change rate can be changed.

[Description of operation]
Next, the operation of the vehicle display device configured as described above will be described with reference to the flowchart of FIG. In the vehicle display device of the present embodiment, after detecting the danger to the host vehicle and the situation of the host vehicle, the risk level is calculated, and the display area change amount and the display area change speed of the display unit 8 are calculated according to the risk level. Is calculated and displayed on the display unit 8 on the basis thereof. The vehicle display device of the present embodiment is intended to allow the driver to grasp in detail the degree of danger approaching the host vehicle, based on the two parameters of the display area change and the display area change speed displayed on the display unit 8. It is.

  First, when the driver starts driving the host vehicle, the vehicle state detecting means 4 operates and the camera 2 mounted on the host vehicle uses the external information around the host vehicle (other vehicles, pedestrians or others around the host vehicle). (A dangerous object detection process in step S1). Further, the vehicle status detection means 4 detects the vehicle speed of the host vehicle from the vehicle speed sensor 1 and detects in which direction and how much the driver has turned the steering wheel from the steering angle sensor 3 (vehicle running state detection in step S2). processing). From the information obtained from the vehicle speed sensor 1, the camera 2, and the steering angle sensor 3, the relative distance and relative speed of the other vehicle with respect to the host vehicle are calculated.

  For example, when another vehicle approaches from the right lane or the left lane while the host vehicle is traveling in the center lane of three lanes, the risk S (step S3) determined for each range of the relative distance between the host vehicle and the other vehicle. The display area A corresponding to the risk S is displayed on the display unit 8 from the correlation diagram of FIG. 5 in which the correlation between the vehicle risk level calculation process) and the display area A of the display unit 8 is obtained. The display area change calculation means 5 calculates the display area A of the display unit 8 from the correlation diagram of FIG. 5 (display area calculation process in step S4). When the relative distance of the other vehicle with respect to the host vehicle is long, the display area A is set small (display area A1) as the risk S is low (for example, the risk S1). On the other hand, when the relative distance of the other vehicle with respect to the host vehicle is short, the display area A is set large (display area A2) with the risk S being high (for example, the risk S2).

  In the display unit 8 incorporated in the meter 9 in front of the driver, for example, the display area A of the small elliptical display unit 8 in FIG. As shown in FIG. 4 (B), it extends in the horizontal direction and becomes larger (control amount output process in step S6). The driver can recognize the danger of approaching the host vehicle by looking at the change in the display area A of the display unit 8. In addition, the driver recognizes that the vehicle is approaching danger as the display area A of the display unit 8 increases from small to large. On the other hand, if there is no change in the display area A of the display unit 8, the driver can recognize that the vehicle is not in danger and can concentrate on driving.

  Further, when the host vehicle tries to change the lane to the right lane while traveling in the center lane of the three lanes, when the steering angle sensor 3 detects that the driver has turned the steering wheel to the right side, The other vehicle traveling in the right lane is detected by the camera 2, and the vehicle condition detecting means 4 calculates the relative distance and relative speed of the other vehicle with respect to the own vehicle. The display area change calculation means 5 calculates the display area A of the display unit 8 from the correlation diagram of FIG. 5 (display area calculation process in step S4). The display area change speed calculation means 6 calculates the speed of the display area change of the display unit 8 from the correlation diagram of FIG. 6 (display area change speed calculation process in step S5).

  For example, when the driver changes the lane by turning the steering wheel to the lane in which the other vehicle travels, the display area A displayed on the display unit 8 is set to A2 with the risk S at that time being S2. In addition, the risk T is T2 and the display area change speed V of the display unit 8 is V2, and the display area 8 is displayed so as to change the display area from small to large, and the display area change speed is increased. Display (control amount output processing in step S6). For this reason, the driver recognizes whether or not danger is imminent with respect to the host vehicle by increasing or decreasing the display area of the display unit 8 and increasing or decreasing the display area change speed. The display area change speed is high when the risk level for the host vehicle is high, and is slower when the risk level is lower than the high risk level.

[Effect of the embodiment]
According to the vehicle display device of the present embodiment, depending on the degree of danger to the host vehicle detected by the detection means (for example, relative distance and / or relative speed between the host vehicle and an object around the host vehicle). Since the display area of the display section changes and the change speed of the display area is variable, when the degree of danger is high (for example, the relative distance is short or the relative speed is high), the display area is changed and When the variable speed of the display area is changed and the driver recognizes it immediately and the danger level is low (for example, the relative distance is long or the relative speed is slow), the display area variable state and the display area variable By changing the variable state of the speed, the driver can be made aware that he can concentrate on driving.

  Therefore, according to the vehicle display device of the present embodiment, when the information is information that the occupant wants to actively report (want to recognize) during traveling of the host vehicle, the information is displayed on the display unit so that the occupant can immediately recognize it. If the information does not want to be actively reported to the occupant (does not want to be recognized), change the display method according to the information so that the occupant does not actively notify so that the driver can concentrate on driving. Can do.

  In addition, according to the vehicle display device of the present embodiment, it becomes possible for the driver to recognize the situation of the host vehicle, and the degree of danger to the host vehicle is visually recognized by the display area change and the display area change speed of the display unit. can do.

  Further, according to the vehicle display device of the present embodiment, the degree of danger detected by the detecting means (for example, information on the relative distance and / or relative speed with respect to the object around the own vehicle) Since it is associated with the degree, the driver can visually recognize how much danger is approaching the host vehicle from the change in the display area of the display unit and the change state of the display area change speed.

  Further, according to the vehicle display device of the present embodiment, the display area change speed is increased when the risk level for the host vehicle is high, and when the risk level is lower than the risk level, the display area change speed is reduced visually. It is possible to cause the occupant to recognize the degree of danger with respect to the host vehicle at a high display area change speed, and it becomes easier for the occupant to notice the higher the degree of danger.

  In addition, in the vehicle status detection means 4 of above-described embodiment, although the danger level with respect to the own vehicle was detected, you may detect the emergency degree with respect to the own vehicle. The degree of urgency is urgent with respect to the danger of approaching the host vehicle determined from information such as the speed of the host vehicle, the speed of the other vehicle, and the relative position between an object (for example, another vehicle) around the host vehicle and the host vehicle It is a degree of whether it is a grade which informs a passenger | crew to a passenger | crew, or a grade which does not require urgent so much. In this case, the display area of the display unit is changed according to the degree of urgency detected by the detection means, and the speed at which the display area is changed is changed to allow the driver to recognize.

[Other Embodiments]
FIG. 7 is a correlation diagram between the risk level, the display area, and the display area change speed when the display area of the display unit 8 and the display area change speed are changed according to the risk level of the host vehicle. In FIG. 7, the risk S is determined only by the information of the relative distance from the own vehicle to the other vehicle (excluding the relative speed), and the display area change and the display area change speed of the display area A at the risk S are shown. calculate.

  As shown in FIG. 7, if the display area change of the display unit 8 and the display area change speed are calculated based only on the relative distance information of the other vehicle with respect to the own vehicle, the risk S and the risk T can be unified. It is possible to simplify the process until it is displayed on the display unit 8. In this embodiment, as in the previous embodiment, the degree of danger is visually determined from the change in the display area displayed on the display unit 8 and the speed of change in the display area, with respect to the host vehicle. The passenger can be recognized. The same applies to the following embodiments.

  FIG. 8 is a state change diagram when the display unit 8 is changed in the circumferential direction. In FIG. 8, the direction in which the display area of the display unit 8 is changed is changed in the circumferential direction. In the normal state, the display unit 8 has a small elliptical shape as shown in FIG. 8A. However, when the danger to the host vehicle approaches, the display unit 8 expands in the entire circumferential direction as shown in FIG. 8B. The display area changes.

  In this embodiment, if the display area of the display unit 8 is changed to be larger or smaller in the circumferential direction, the change rate in the circumferential direction is slower than the change in one direction. The display form is suitable when it is not desired to be displayed.

  FIG. 9 is a state change diagram when the change in the display area of the display unit is expanded in a direction to alert the occupant. In FIG. 9, the direction in which danger is approaching the host vehicle is the display area change direction of the display unit 8. For example, the display unit 8 is a small circle as shown in FIG. 8A in the normal state, but when the danger approaches the host vehicle from the front of the vehicle, the display unit 8 is shown in FIG. Thus, the display area changes upward. In addition, when the danger approaches from the right side of the host vehicle, the display unit 8 changes the display area to the right as shown in FIG.

  In this embodiment, by defining in which direction the danger approaches from the own vehicle in a direction that changes the display area of the display unit 8, the danger direction and the degree of danger approaching the own vehicle at a glance can be determined. It is possible to grasp in detail. At this time, the occupant can recognize that the degree of danger is high if the display area change speed of the display unit 8 is fast, and can recognize that the degree of danger is low if the display area change speed is slow.

  INDUSTRIAL APPLICABILITY The present invention can be used for a vehicle display device that allows a passenger to visually recognize a danger to the host vehicle.

1 ... Vehicle speed sensor (detection means)
2 ... Camera (detection means)
3. Steering angle sensor (detection means)
4 ... Vehicle status detection means (detection means)
5 ... Display area change calculating means 6 ... Display area change speed calculating means 7 ... Display device operating means 8 ... Display section

Claims (4)

  1. A display unit for visually displaying the occupant;
    Detection means for detecting the risk or urgency of the vehicle,
    A means for expanding and changing the display area of the display unit in a direction to be urged to the occupant in accordance with the degree of danger or urgency detected by the detection means, and for changing the speed of changing the display area; A vehicle display device comprising the vehicle.
  2. The vehicle display device according to claim 1,
    The risk level or the urgency level detected by the detection means is associated with the risk level or the urgency level for the host vehicle, and the display area of the display unit is changed according to the risk level or the urgency level. A vehicle display device characterized in that the speed is variable.
  3. The vehicle display device according to claim 1 or 2, wherein
    A display device for a vehicle, wherein a display area of the display unit is changed in a circumferential direction.
  4. The vehicle display device according to claim 3,
    The speed of the display area change is high when the risk or urgency for the host vehicle is high, and is slower when the risk or urgency is lower than the high risk or urgency. Display device for a vehicle.
JP2010112998A 2010-05-17 2010-05-17 Vehicle display device Active JP5477158B2 (en)

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Application Number Priority Date Filing Date Title
JP2010112998A JP5477158B2 (en) 2010-05-17 2010-05-17 Vehicle display device

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JP5951976B2 (en) * 2011-12-14 2016-07-13 トヨタ自動車株式会社 Vehicle display device

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JPH0687043U (en) * 1993-05-28 1994-12-20 旭硝子株式会社 The display device for a vehicle
JP2005141557A (en) * 2003-11-07 2005-06-02 Nissan Motor Co Ltd Display system for vehicle
AU2003300514A1 (en) * 2003-12-01 2005-06-24 Volvo Technology Corporation Perceptual enhancement displays based on knowledge of head and/or eye and/or gaze position
JP4274111B2 (en) * 2004-12-02 2009-06-03 株式会社デンソー Proper inter-vehicle distance display control device
JP2006284458A (en) * 2005-04-01 2006-10-19 Denso Corp System for displaying drive support information
JP4650349B2 (en) * 2005-10-31 2011-03-16 株式会社デンソー Vehicle display system
JP5136773B2 (en) * 2008-03-28 2013-02-06 日本精機株式会社 Vehicle display device

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