JP2002163783A - Display device of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent judgment of a driver, to whom warning has been issued, from delaying, and to prevent giving sense of incongruity. SOLUTION: When a warning control timing T1 by an obstacle warning system is slower than a warning control timing T2 by a curve-proceeding warning system, the output of an obstacle warning system 7, whose warning control timing is faster, is controlled preferentially. When the warning control timing T1 by the obstacle warning system is slower than the control timing T2 by the curve access speed warning system 8, the output of the curve-proceeding speed warning system whose warning control timing is faster is controlled so as to be preferential.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a display device for a vehicle that outputs a warning to a driver when an obstacle or a curve exists in front of the vehicle and controls the warning according to the priority for displaying the warning.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 54-55923 discloses information on the permissible speed of a forward curve received from a transmitter provided on the road side and outputs an alarm to a driver when the vehicle speed exceeds a safe speed. A technology to do this has been proposed. Japanese Patent Application Laid-Open No. H11-143794 proposes a technology for detecting an inter-vehicle distance from a preceding vehicle and displaying the inter-vehicle distance on a display.

[0003]

However, in any of the prior arts, when the driver is warned of the presence of an obstacle or a curve ahead of the host vehicle, if the information provision timing of the obstacle and the curve overlaps, However, there is no disclosure of the technical idea of giving priority to the next warning timing information, and information that is considered unnecessary in the traveling state of the own vehicle is displayed with priority.
There are adverse effects such as a delay in the judgment of the driver receiving the alarm and a delay in displaying information with a high degree of urgency.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a driver with information on the presence of an obstacle or a curve ahead of a host vehicle when the information provision timing of the obstacle and the curve overlap. Provided is a vehicle display device that can remove the adverse effects of delaying the judgment of the driver receiving the alarm and delaying the display of information with a high degree of urgency by giving priority to the information with the next earlier warning timing. It is to be.

[0005]

In order to achieve the above object, a display device for a vehicle according to the present invention has a first configuration in which when an obstacle is detected in front of the vehicle, an obstacle is present in front of the vehicle.
An obstacle warning system that displays an information screen, calculates a value related to reachability to the obstacle, and outputs a warning when the value exceeds a predetermined value and the reachability is high; Is detected, a second information display screen indicating that there is a curve ahead is displayed, and the distance to the curve is determined from the vehicle speed and the vehicle speed appropriate for traveling on the curve. A curve approach speed warning system that outputs a warning to the driver when the distance becomes smaller than the first threshold, and when the obstacle and the curve are detected substantially simultaneously, a time until a warning of each system is output. Is displayed preferentially as the display screen corresponding to the shorter information.

Preferably, when the obstacle and the curve are detected at substantially the same time, only one piece of information having a short time until an alarm of each system is output is prioritized as a display screen corresponding to the information. Then, after the one information becomes unnecessary to be displayed, the other information is displayed.

[0007] Preferably, when it is detected that there is a stop line in front of the vehicle, information that there is a stop line in front of the vehicle is provided, and the distance to the stop line is set to a second distance.
A stop position warning system that outputs a warning to the driver when the distance becomes smaller than the threshold value is further provided, and when the obstacle and the pause line are detected substantially simultaneously, information on the obstacle is displayed with priority.

Preferably, when the obstacle is in the vicinity of the stop line and the obstacle does not stop at the stop line, the information display of the obstacle is stopped.

[0009]

As described above, according to the first aspect of the present invention, when information on the presence of an obstacle or a curve ahead of the host vehicle is provided to the driver, the information provision timing of the obstacle and the curve overlap. Then, by giving priority to the information with the next earlier warning timing, it is possible to eliminate the adverse effects such as delaying the judgment of the driver receiving the warning and delaying the display of information with high urgency.

According to the second aspect of the present invention, when an obstacle and a curve are detected at substantially the same time, only one piece of information that has a short time until an alarm is output from the obstacle warning system and the curve approach speed warning system is output. By displaying the information preferentially as a display screen corresponding to the information, and displaying the other information after one of the information becomes unnecessary, the remaining information with a low degree of urgency can be immediately displayed.

According to the third aspect of the present invention, when it is detected that there is a stop line in front of the vehicle, information that a stop line is present in front is provided, and the distance to the stop line is set to the second distance. The system further includes a stop position alarm system that outputs an alarm to the driver when the distance becomes smaller than the threshold value, and when an obstacle and a pause line are detected substantially simultaneously, the information of the obstacle is displayed with priority to display an alarm. It is possible to eliminate the adverse effects such as a delay in the determination of the driver receiving the information and a delay in the display of information having a high degree of urgency.

According to the present invention, when the obstacle is not stopped at the stop line while the obstacle is near the stop line, the information display of the obstacle is stopped. Unnecessary information display during driving can be eliminated.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an example in which a display device for a vehicle according to the present invention is mounted on a typical automobile will be described in detail with reference to the accompanying drawings.

The embodiment described below is an example of a means for realizing the present invention, and the present invention can be applied to a modified or modified embodiment of the following embodiment without departing from the gist of the invention. .

FIG. 1 is a diagram showing a system configuration of an automobile equipped with a vehicle display device of the present embodiment.

As shown in FIG. 1, a display device for a vehicle according to the present embodiment includes a radar device 1 for detecting an obstacle ahead of the vehicle by a laser radar, a millimeter wave radar, or the like, and a transmitter provided on a road surface. A road-to-vehicle communication device 2 that obtains traffic information such as traffic congestion by communication, and a magnetic marker buried on a road surface is detected to obtain position information and road surface information (curves, pause lines, intersections, etc.). A lane marker sensor 3, a vehicle speed sensor 4 for detecting the vehicle speed of the host vehicle, a brake actuator 5 for performing automatic deceleration control, and obstacle information, a curve approach speed alarm, and a stop position alarm system information, which will be described later, are displayed. A display device 6 composed of a liquid crystal display or the like, a speaker 11 for notifying each information by an alarm sound, an obstacle alarm system 7, and a curve approach speed alarm system. And Temu 8, the stop position alarm system 9
And a display control device 10 for controlling the information display of each of the systems 7 to 9.

The obstacle warning system 7 includes information on obstacles detected by the radar device 1 and the road-vehicle communication device 2.
Obstacles, such as a preceding vehicle or a pedestrian, existing in front of the host vehicle based on the traffic information obtained from the vehicle, the position information and road surface information detected by the lane marker sensor 3, and the vehicle speed detected by the vehicle speed sensor 4. Executing information provision control for displaying information indicating that an obstacle is present ahead on the display device 6, and calculating a relative value relating to reachability to the obstacle, such as a distance or a relative speed to the obstacle, When the relative value exceeds the first threshold value of the obstacle and is highly likely to be reached, an alarm control for outputting an alarm to the display device 6 is executed. When the relative value exceeds the second threshold value of the obstacle and is highly likely to be reached, the brake actuator 5 executes the automatic deceleration control.

FIG. 12 to FIG. 14 show examples of a display screen at the time of information provision control and a display screen at the time of alarm control when a preceding vehicle is detected ahead of the own vehicle in the obstacle warning system 7.
It is a figure showing the example of a display screen at the time of automatic deceleration control. In addition, in the information provision control, a single artificial sound is output from a speaker or the like simultaneously with the display screen, and in the alarm control and the automatic deceleration control, a continuous artificial sound is output from the speaker 11 or the like to further alert the driver.

As shown in FIGS. 12 to 14, on a display screen 16 of the display device 6, text information indicating a danger target is displayed on a first display unit 18, and a preceding vehicle β is displayed on a second display unit 19. Is displayed on the third display unit 2.
In 0, a symbol mark m relating to the display content is displayed. Β is another vehicle (other vehicle figure) such as the displayed preceding vehicle.

As shown in FIG. 2, the obstacle warning system 7
When the preceding vehicle β traveling at the vehicle speed Vβ is present as an obstacle ahead of the host vehicle α traveling at the vehicle speed Vα, the time T1 until the alarm control is executed is a distance Xn to the obstacle β, X is the alarm output start point based on β
Assuming that w is calculated by the following equation 1.

T1 = (Xn−Xw) / (Vα−Vβ) (1) Further, the curve approach speed warning system 8 is detected by the traffic information obtained from the road-vehicle communication device 2 and the lane marker sensor 3. Based on the position information, the road surface information, and the vehicle speed detected by the vehicle speed sensor 4, information indicating that the traveling path ahead of the host vehicle is a curve is displayed, and information indicating that there is a curve ahead is displayed on the display device 6. Along with executing the provision control, when the distance to the curve becomes smaller than the first threshold value of the curve determined from the vehicle speed and the vehicle speed appropriate for traveling on the curve, an alarm is output to the display device 6. Execute alarm control. When the distance to the curve becomes smaller than the second threshold value of the curve, the brake actuator 5 executes automatic deceleration control.

FIGS. 15 and 16 are diagrams showing examples of a display screen at the time of information provision control and an example of a display screen at the time of alarm control when the curve approaching speed warning system 8 detects a curve ahead of the vehicle. The example of the display screen at the time of the automatic deceleration control is the same as that in FIG. In the information provision control, a single-shot artificial sound is output from a speaker or the like at the same time as the display screen.
In the alarm control and the automatic deceleration control, a continuous artificial sound is output from a speaker or the like to further draw the driver's attention.

As shown in FIG. 3, a time T2 until the alarm control is executed in the curve approach speed alarm system 8 is performed.
When a curve exists in front of the vehicle α traveling at the vehicle speed Vα, the distance to the curve entrance (the current position of the vehicle α) Xn, and the alarm output start point is Xw with the curve entrance as a base point. 2 is calculated.

T2 = (Xn-Xw) / Vα (2) Further, the stop position warning system 9 includes the traffic information obtained from the road-vehicle communication device 2, the position information detected by the lane marker sensor 3, and the road surface. Based on the information and the vehicle speed detected by the vehicle speed sensor 4, the distance to the temporary stop line ahead of the host vehicle, vehicle information on the priority road side, the road shape, the road surface state, etc. are detected, and the vehicle is temporarily moved forward as approach control. An information providing control for displaying information indicating that a stop line exists on the display device 6 is executed, and an alarm is output to the display device 6 when the distance to the pause line becomes smaller than a first threshold value of the pause line. Execute alarm control.

FIGS. 17 and 18 show an example of a display screen at the time of information provision control and an example of a display screen at the time of alarm control in the stop position alarm system 9 in the case of approach support control in which a pause line is detected ahead of the vehicle. FIG. In the information provision control, a single artificial sound is output from a speaker or the like simultaneously with the display screen, and in the alarm control, a continuous artificial sound is output from a speaker or the like to further alert the driver.

As shown in FIG. 17, on a display screen 16 of the display device 6, text information indicating a danger target is displayed on a first display section 18, and a traveling state of the own vehicle is displayed on a second display section 9. Graphic information and numerical information indicating a numerical value related to the degree of urgency (numerical information indicating the distance Da to the temporary stop intersection = 40 m) are displayed together, and this numerical information is closer to the driver than the graphic information ( It is displayed on the right side for a right-hand drive car). As shown in FIG. 18, the first display unit 18 displays character information indicating a danger target, and the second display unit 9 displays graphic information indicating the traveling state of the own vehicle and numerical values related to the degree of urgency. Numeric information
(Numerical information indicating the distance Da to the temporary stop intersection = 10 m) is also displayed, but this numerical information is displayed closer to the driver than the graphic information.

When the own vehicle is stopped at the stop line, the position of the other vehicle ahead of the own vehicle, the traveling lane,
The vehicle speed and the like are detected, and as start support control, information provision control for displaying information such as the presence of another vehicle at the intersection ahead or on the priority road and the vehicle speed on the display device 6 is executed. An alarm control for outputting an alarm to the display device 6 to prompt the user is executed. Note that the start support control is configured not to be performed when the host vehicle passes through the stop line without stopping.

FIGS. 19 and 20 show examples of a display screen at the time of information provision control and an example of a display screen at the time of alarm control in the stop position alarm system 9 in the case of start support control in which the host vehicle is stopped at a temporary stop line. FIG. In the information provision control, a single artificial sound is output from a speaker or the like simultaneously with the display screen, and in the alarm control, a continuous artificial sound is output from a speaker or the like to further alert the driver.

As shown in FIG. 19, on the display screen 16 of the display device 6, character information indicating a danger target is displayed on the first display section 18, and the traveling state of the own vehicle is displayed on the second display section 9. Graphic information and numerical information indicating numerical values relating to the degree of urgency (numerical information such as the speed of another vehicle traveling on the priority road with respect to the own vehicle) are displayed together. As shown in FIG. 20, the first display unit 18 displays character information indicating a danger target, and the second display unit 9 displays graphic information indicating the traveling state of the vehicle and numerical values related to the degree of urgency. Numerical information is also displayed.

The display control device 10 includes the above-described systems 7 to
9 is switched on the display device 6 in accordance with the urgency of each information.

Next, the control procedure of the controller 2 will be described with reference to FIG.
6 to FIG. 6 and the flowcharts of FIG. 7 and FIG.

FIGS. 4 to 7 are time charts showing control procedures of the display device of the vehicle according to the present embodiment.

As shown in FIG. 4, the obstacle alarm system 7
When the alarm control timing T1 is later than the alarm control timing T2 by the curve approach speed alarm system 8, the output of the obstacle alarm system 7 with the earlier alarm control timing is controlled so as to be prioritized.

As shown in FIG. 5, when the alarm control timing T1 by the obstacle alarm system 7 is later than the alarm control timing T2 by the curve approach speed alarm system 8, when the alarm control timing of the curve entry alarm system 8 is earlier. Control to give priority to output.

Further, as shown in FIG. 6, when the alarm control timing T1 by the obstacle alarm system 7 is later than the alarm control timing T2 by the curve entry speed alarm system 8, the output of the curve entry alarm system 8 is prioritized. However, when the vehicle enters a curve or the like and the output of the curve entry warning system 8 ends or becomes unnecessary, control is performed so that the output of the obstacle warning system 7 which has not been prioritized is executed.

As shown in FIG. 7, the output timing of the stop position alarm system 9 and the obstacle alarm system 7
The output of the obstacle alarm system 7 is prioritized when the output timing of the obstacle alarm system overlaps with the output timing of the obstacle alarm. However, when the output of the obstacle alarm system 7 ends or becomes unnecessary after the obstacle disappears, the priority is not given. The output of the stopped position alarm system 9 is controlled to be executed.

With this configuration, when providing the driver with information on the existence of an obstacle or a curve ahead of the host vehicle, if the information providing timing of the obstacle and the information providing timing of the curve overlap, the next alarm timing is set. Since the earlier display is prioritized, it is possible to eliminate the adverse effects such as a delay in the judgment of the driver receiving the warning and a delay in the display of information with a high degree of urgency.

FIGS. 8 to 11 are flowcharts showing the control procedure of the display device of the vehicle according to the present embodiment.

As shown in FIG. 8, in step S1, the systems 7 to 9 update the input of the detection results from the radar device 1, the roadside-to-vehicle communication device 2, and various sensors. sets a flag S ₁ to zero. Incidentally, the flag S ₁ is set to zero, the display control unit 10 the information provision control obstacle warning system 7,
Stop each display during alarm control and automatic deceleration control.

In step S3, it is determined whether or not an obstacle is present ahead. If the determination in step S3 is YES and an obstacle is present, the process proceeds to step S4 to shift to the output control of the obstacle warning system 7. If the determination is NO and there is no obstacle, the display is unnecessary and the process proceeds to the output control of the curve approach speed warning system 8 in step S10.
Proceed to.

In step S4, it is determined whether to intervene in the information provision control for an obstacle detected ahead. If the determination in step S4 is YES and the information is provided, the process proceeds to step S5, and if the determination is NO. If no information is provided, the process proceeds to step S10.

In step S5, the obstacle warning system 7
Calculates the alarm control timing T1 by sets a flag S ₁ to 1. Incidentally, the flag S ₁ is set to 1, the display control unit 10 obstacle warning system 7
The information provision control is executed.

In step S6, it is determined whether or not the obstacle detected ahead is to be intervened in the alarm control.
If the determination in step 6 is YES and the alarm is issued, the process proceeds to step S7. If the determination is NO and the alarm is not issued, the process proceeds to step S10.

[0044] To set in step S7, the flag S ₁ to 2. When the flag S ₁ is set to 2, the display control device 10 executes the alarm control of the obstacle alarm system 7.

In step S8, it is determined whether or not the obstacle detected ahead should intervene in the automatic deceleration control. If the determination in step S8 is YES, the process proceeds to step S9, where the determination is made. If NO is determined and the automatic deceleration control does not intervene, the process proceeds to step S10 in FIG.

[0046] Set In step S9, the flag S ₁ to 3. Incidentally, the flag S ₁ is set for 3, the display control unit 10 executes the automatic deceleration control of the obstacle warning system 7.

As shown in FIG. 9, in step S10,
Sets the flag S ₂ to zero. Incidentally, the flag S ₂ is set to zero, the display control unit 10 information provision control curve approach speed alarm system 8, alarm control, to stop the display when the automatic deceleration control.

In step S11, it is determined whether or not the front of the traveling path is a curve. If the determination in step S11 is YES and the vehicle is on a curve, the process proceeds to step S12 to shift to the output control of the curve entry speed warning system 8, Judgment is N
If it is not a curve at O, no display is required, and the process proceeds to step S in FIG.
Proceed to 18.

In step S12, it is determined whether or not to intervene in the information provision control for the curve ahead of the traveling path. If the determination in step S12 is YES and the information is provided, the process proceeds to step S13, and if the determination is NO, the information is provided. If not, the process proceeds to step S18.

[0050] In step S13, to calculate the alarm control timing T2 by curve approach speed alarm system 8 sets a flag S ₂ to 1. Note that the flag S ₂ is 1
, The display control device 10 executes the information provision control of the curve approach speed warning system 8.

In step S14, it is determined whether or not to intervene in the warning control for the curve ahead of the traveling path, and step S1 is executed.
If the determination in step 4 is YES and an alarm is issued, step S15
If the determination is NO and no alarm is issued, step S18
Proceed to.

[0052] To set in step S15, the flag S ₂ to 2. By setting the flag S ₂ to 2,
The display control device 10 executes an alarm control of the curve approach speed alarm system 8.

In step S16, it is determined whether or not to intervene in the automatic deceleration control for the curve ahead of the traveling road. If the determination in step S16 is YES and the automatic deceleration control is intervened, the process proceeds to step S17, and the determination is NO. If the control does not intervene in the automatic deceleration control, the process proceeds to step S18 in FIG.

[0054] is set in step S17, the flag S ₂ to 3. By setting the flag S ₂ to 3,
The display control device 10 executes automatic deceleration control of the curve approach speed warning system 8.

[0055] As shown in FIG. 10, in step S18, it sets the flag S ₃ to zero. Incidentally, the flag S ₃ is set to zero, the display control unit 10 stops the respective display in the information provision control and alarm control of the stop position alarm system 9.

In step S19, it is determined whether or not there is a stop line ahead of the traveling path, and the determination in step S19 is YES.
If there is a stop line, the process proceeds to step S20 to shift to the output control of the stop position alarm system 9. If the determination is NO and there is no stop line, the display of the approach support is unnecessary, so the start support control is performed. Step S to determine whether to execute
Proceed to 24.

In step S20, it is determined whether or not to intervene in the information provision control for the temporary stop line ahead of the traveling path. If the determination in step S20 is YES and the information is provided, the process proceeds to step S21, and the determination is NO If no information is provided, the process proceeds to step S22.

[0058] In step S21, sets the flag S ₃ to 1. By setting the flag S ₃ to 1,
The display control device 10 executes information provision control of the stop position alarm system 9.

In step S22, it is determined whether or not to intervene in the alarm control with respect to the temporary stop line ahead of the traveling path. If the determination in step S22 is YES, an alarm is issued.
Proceeding to step S23, if the determination is NO and no alarm is issued, step S
Proceed to 24.

[0060] To set in step S23, the flag S ₃ to 2. By setting the flag S ₃ to 2,
The display control device 10 executes the alarm control of the stop position alarm system 9.

In step S24, it is determined whether or not the vehicle is stopped at the temporary stop line. If the determination in step S24 is YES, the process from step S20 is performed to execute the start support control. If NO is not stopped, the process proceeds to step S25 shown in FIG.

Next, display switching control among the obstacle warning system 7, the curve approach speed warning system 8, and the stop position warning system 9 will be described with reference to the flowchart of FIG.

[0063] As shown in FIG. 11, in step S25, the flag S _1, S _2, S ₃ is determined whether it is set to zero, the flag S ₁ is YES determination at step S25, S _2, S ₃ If is zero, the process proceeds to step S26,
If the determination is NO and the flags S ₁ , S ₂ , and S ₃ are not zero, the process proceeds to step S27.

In step S26, the display control flag D is set to zero. When the flag D is set to zero, the display control device 10 controls the obstacle warning system 7, the curve approach speed warning system 8, and the stop position warning system 9.
Display of both stops.

At step S27, flags S ₁ and S ₂ are set to 1
Is determined, and if the determination in step S27 is YES and the flags S ₁ and S ₂ are 1, then step S28
If the determination is NO and the flags S ₁ and S ₂ are not 1, the flow proceeds to step S31.

In step S28, it is determined whether the alarm control timing T1 by the obstacle alarm system 7 calculated in step S5 is earlier than the alarm control timing T2 by the curve entry speed alarm system 8 calculated in step S13 (step S13). T1 <T2). If the determination is YES in step S28 and the alarm control timing T1 by the obstacle alarm system 7 is earlier than the alarm control timing T2 by the curve approach speed alarm system 8, step S29.
When the determination is NO, the alarm control timing T1 by the obstacle alarm system 7 is changed to the curve approach speed alarm system 8
If it is later than the alarm control timing T2, the process proceeds to step S30.

In step S29, the display control flag D is set to 1 so that the output of the obstacle warning system 7 is prioritized, and the flow advances to step S31. When the flag D is set to 1, the display control device 10 executes the display of the obstacle alarm system 7.

In step S30, the display control flag D is set to 2 so that the output of the curve entry speed warning system 8 is prioritized, and the flow advances to step S31. When the flag D is set to 2, the display control device 10 executes the display of the curve approach speed warning system 8.

In step S31, the flags S ₁ and S ₃ are set to 1
Is determined, and if the determination in step S31 is YES and the flags S ₁ and S ₃ are 1, then step S32
If the determination is NO and the flags S ₁ and S ₃ are not 1, the flow proceeds to step S33.

In step S32, the display control flag D is set to 1 so that the output of the obstacle warning system 7 is given priority over the stop position warning system 9, and the process proceeds to step S32.
Proceed to 39.

[0071] In step S33, it is determined whether the flag S ₁ is set to non-zero, if the flag S ₁ is nonzero YES determination at step S33, step S
Proceeds to 34, the flag S ₁ determined by the NO If zero, the process proceeds to step S35.

In step S34, the display control flag D is set to 1, and the flow advances to step S39.

[0073] At step S35, it is determined whether the flag S ₂ is set to non-zero, if the flag S ₁ is nonzero YES determination at step S35, step S
Proceeds to 36, if the determination flag S ₂ is zero NO, a process proceeds to step S37.

In step S36, the display control flag D is set to 2, and the flow advances to step S39.

[0075] At step S37, it is determined whether the flag S ₃ is set to non-zero, if the flag S ₃ except zero in YES determination at step S37, step S
38 proceeds, if the determination flag S ₃ is zero NO, a process proceeds to step S39.

In step S36, the display control flag D is set to 3, and the flow advances to step S39.

In step S39, it is determined whether the display control flag D is set to zero. If the determination in step S39 is YES and the flag D is zero, step S40
If the determination is NO and the flag D is not zero, the process proceeds to step S41.

In step S40, the display controller 10 stops displaying any of the obstacle warning system 7, the curve approach speed warning system 8, and the stop position warning system 9.

In step S41, it is determined whether or not the display control flag D is set to 1. If the determination in step S41 is YES and the flag D is 1, the process proceeds to step S42, and the determination is NO and the flag D is not 1. If so, the process proceeds to step S43.

In step S42, the display control device 10 displays a screen for information provision control, alarm control, or automatic deceleration control of the obstacle alarm system 7 on the display device 6, and returns.

In step S43, it is determined whether or not the display control flag D is set to 2. If the determination in step S43 is YES and the flag D is 2, the process proceeds to step S44, where the determination is NO and the flag D is not 2. If so, the process proceeds to step S45.

In step S44, the display control device 10 displays a screen for information provision control, warning control, or automatic deceleration control of the curve approach speed warning system 8 on the display device 6, and returns.

In step S45, it is determined whether the display control flag D is set to 3. If the determination in step S45 is YES and the flag D is 3, the process proceeds to step S46, where the determination is NO and the flag D is not 3. Then return.

In step S46, the display control device 10 displays a screen for information provision control of the stop position alarm system 9 or an alarm control on the display device 6, and returns.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a system configuration of an automobile equipped with a vehicle display device according to an embodiment.

FIG. 2 is a diagram illustrating a method of calculating a time T1 until alarm control is performed in the obstacle alarm system.

FIG. 3 is a diagram illustrating a method of calculating a time T2 until the alarm control in the curve approach speed alarm system is executed.

FIG. 4 is a time chart illustrating a control procedure of the display device of the vehicle according to the embodiment.

FIG. 5 is a time chart showing a control procedure of the display device of the vehicle according to the embodiment.

FIG. 6 is a time chart showing a control procedure of the display device of the vehicle according to the embodiment.

FIG. 7 is a time chart illustrating a control procedure of the display device of the vehicle according to the embodiment.

FIG. 8 is a flowchart showing a control procedure of the vehicle display device of the embodiment.

FIG. 9 is a flowchart illustrating a control procedure of the display device of the vehicle according to the embodiment.

FIG. 10 is a flowchart illustrating a control procedure of the display device of the vehicle according to the embodiment.

FIG. 11 is a flowchart illustrating a control procedure of the display device of the vehicle according to the embodiment.

FIG. 12 is a diagram showing an example of a display screen at the time of information provision control when a vehicle is detected ahead of the own vehicle in the obstacle warning system.

FIG. 13 is a diagram showing an example of a display screen at the time of alarm control when a vehicle is detected ahead of the own vehicle in the obstacle alarm system.

FIG. 14 is a diagram showing an example of a display screen at the time of automatic deceleration control when a vehicle is detected ahead of the own vehicle in the obstacle warning system.

FIG. 15 is a diagram showing an example of a display screen at the time of information provision control when a curve is detected ahead of the host vehicle in the curve approach speed warning system.

FIG. 16 is a diagram showing an example of a display screen at the time of alarm control when a curve is detected ahead of the vehicle in the curve approach speed alarm system.

FIG. 17 is a diagram showing an example of a display screen at the time of information provision control in the case of approach support control in which a stop line is detected ahead of the host vehicle in the stop position warning system.

FIG. 18 is a diagram showing an example of a display screen at the time of alarm control in the case of approach support control in which a stop line is detected ahead of the host vehicle in the stop position alarm system.

FIG. 19 is a diagram showing an example of a display screen at the time of information provision control in the case of start support control in which the host vehicle stops at a temporary stop line in the stop position warning system.

FIG. 20 is a diagram showing an example of a display screen at the time of alarm control in the case of start support control in which the host vehicle stops at a temporary stop line in the stop position alarm system.

[Explanation of symbols]

 Reference Signs List 1 radar device 2 road-to-vehicle communication device 3 lane marker sensor 4 vehicle speed sensor 5 brake actuator 6 display device 7 obstacle warning system 8 curve approach speed warning system 9 stop position warning system

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) B60R 21/00 626 B60R 21/00 626B 626F 626G 627 627 (72) Inventor Koichi Kojima Fuchu-cho, Aki-gun, Hiroshima Prefecture Shinchi No.3-1 Mazda Motor Corporation F-term (reference) 5H180 AA01 BB04 CC03 CC12 CC14 CC19 FF12 FF13 LL01 LL04 LL07 LL08 LL09 LL15

Claims (4)

[Claims] When an obstacle is detected in front of a vehicle, a first information screen indicating that an obstacle is present ahead is displayed, a value relating to reachability to the obstacle is calculated, and the value is determined to be a predetermined value. Displays an obstacle warning system that outputs a warning when the vehicle is more likely to reach the vehicle than the value, and displays a second information display screen indicating that there is a curve ahead when it detects that the front of the vehicle is a curve. And a curve approach speed warning system that outputs a warning to a driver when a distance to the curve is smaller than a first threshold value determined from a vehicle speed and a vehicle speed appropriate for traveling on the curve. When the obstacle and the curve are detected substantially simultaneously, the information with the shorter time until the alarm of each system is output is preferentially displayed as a display screen corresponding to the information. Do Both of the display device. 2. When the obstacle and the curve are detected at substantially the same time, only one of the information that has a short time until an alarm of each of the systems is output is preferentially displayed as a display screen corresponding to the information. 2. The vehicle display device according to claim 1, wherein, after the display of the one information becomes unnecessary, the other information is displayed. 3. When the presence of a stop line in front of the vehicle is detected, information indicating that there is a stop line in front is provided, and when the distance to the stop line becomes smaller than the second threshold value. And a stop position warning system that outputs a warning to a driver, wherein when the obstacle and the pause line are detected substantially simultaneously, information on the obstacle is displayed with priority. A display device for a vehicle according to the above. 4. The information display of the obstacle is stopped when the obstacle is not stopped at the stop line while the obstacle is near the stop line. The vehicle display device according to claim 3.