JPH08115499A - On-vehicle information providing device - Google Patents

Abstract

PURPOSE: To call a driver's attention in accordance with the movement of an obstacle positioned in front of the vehicle when the driver is watching a monitor. CONSTITUTION: The on-vehicle information providing device which provides various pieces of information of media from the monitor and a speaker arranged in vehicle boading space is provided with a distance detecting part 1 which is arranged in the front part of the vehicle so as to detect relative distance from the vehicle to another vehicle positioned ahead at every prescribed time and a running state detecting part 2 which is arranged in a vehicle running system so as to detect the state of running and stopping. It is judged whether or not relative distance detected by the distance detecting part 1 has changed with time, 'the front vehicle is moved' is displayed on the display screen 3 of the monitor when inter-vehicle distance becomes larger, for example, or a voice from a speaker notifies it and requires the driver to visually recognize an object to be monitored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle-mounted information providing device for obtaining a plurality of media information in a vehicle.

[0002]

2. Description of the Related Art In recent years, with the progress of multimedia, an information providing apparatus having a monitor screen is often provided in a general automobile or the like.

This type of in-vehicle information providing device is arranged in a passenger space of a vehicle, for example, a dashboard or an instrumental panel, and a person in the passenger space, for example, a driver or a passenger seat. It is configured to provide a plurality of media information such as television broadcasting, map information, vehicle information, etc.

In the case of this device, the above media information is displayed on the monitor only when the vehicle is stopped from the viewpoint of traffic safety. When the vehicle shifts from the stopped state to the running state, the driver Since it is dangerous to keep watching TV broadcasts, a message such as "Running" is displayed on the monitor. Note that map information and vehicle information may be constantly displayed regardless of the state of the vehicle being stopped or running.

Here, for example, when the driver is alone in the vehicle, the driver can look at the map or the like displayed on the monitor by utilizing the time during which the red light is stopped.
The travel route from now on may be decided.

However, when the driver concentrates on the monitor, he or she tends to forget the time, and when he suddenly looks forward from the horn from behind, the car in front of him has already started.
You may be annoying the vehicle behind you.

[0007]

As described above, in the above-described conventional vehicle-mounted information providing apparatus, when the driver looks at the monitor while the signal is stopped, the driver does not notice even if the vehicle ahead starts.
There was a problem that it was not good for traffic safety because I sometimes panicked when I started to notice that the signal had switched due to a horn from the back and so on.

The present invention has been made to solve such a problem, and an in-vehicle information providing apparatus capable of improving safety during driving by calling attention to a driver watching a monitor. Is intended to provide.

[0009]

In order to achieve the above-mentioned object, an on-vehicle information providing apparatus according to claim 1 provides on-vehicle information for providing a person in a vehicle with information of a plurality of media. In the device, a traveling state detection means that is provided in a traveling system of the vehicle and detects traveling and stop states of the vehicle, and at least one of a frontmost portion and a rearmost portion of the vehicle, and a monitoring direction from the vehicle. A distance detecting means for detecting a relative distance to another vehicle located at a predetermined time interval, and a distance change determining means for determining whether or not the relative distance detected by the distance detecting means has changed with time, When the distance change determining means detects that the relative distance to another vehicle has changed, the person in the vehicle is monitored based on the vehicle state detected by the traveling state detecting means. It has and a notification means for notifying information which instructs to view the.

The on-vehicle information providing apparatus according to the present invention is a vehicle-mounted information providing apparatus for providing information of a plurality of media from a monitor and a speaker arranged in a boarding space of the vehicle. Provided, the traveling state detection means for detecting the state of traveling and stopping, and provided in at least one of the foremost part and the rearmost part of the vehicle,
Distance detecting means for detecting a distance from the vehicle to another vehicle located in the monitoring direction at predetermined time intervals, storage means for storing distance information detected by the distance detecting means at each detection time, and the distance Each time the detecting means detects new distance information, the immediately preceding distance information is fetched from the storing means and the comparing means compares and judges the magnitude of each other; and the running state detecting means may stop the vehicle. When it is detected, when the new distance information is determined to be larger by the comparison means, the monitor and the speaker are controlled to display the predetermined information so that the person in the vehicle can visually recognize the front or the rear. And a control means for outputting a voice.

Further, the on-vehicle information providing apparatus according to the present invention is a vehicle-mounted information providing apparatus for providing information of a plurality of media from a monitor and a speaker arranged in a boarding space of the vehicle. Provided, the traveling state detection means for detecting the state of traveling and stopping, and provided in at least one of the foremost part and the rearmost part of the vehicle,
Distance detecting means for detecting a relative distance from the vehicle to another vehicle located in the monitoring direction at predetermined time intervals, and it is determined whether or not the relative distance detected by the distance detecting means changes with time. The monitor and the speaker are controlled according to the change state of the relative distance between the own vehicle and the other vehicle, which is detected / determined by the distance change determining means, the traveling state detecting means and the distance change determining means, and the predetermined information is displayed. And a control means for performing display and voice output.

An on-vehicle information providing apparatus according to a fourth aspect of the present invention is an in-vehicle information providing apparatus for providing information of a plurality of media from a monitor arranged in a boarding space of a vehicle, the vehicle-mounted information providing apparatus being provided in a traveling system of the vehicle. A traveling state detecting means for detecting a traveling state and a stopping state of the vehicle, and a relative distance from the vehicle to another vehicle positioned in the monitoring direction, the relative distance being provided in at least one of a frontmost portion and a rearmost portion of the vehicle for a predetermined time. Provided at least one of a front portion and a rear portion of the vehicle, distance detecting means for detecting each, a distance change determining means for determining whether or not the relative distance detected by the distance detecting means changes with time. An image pickup means for picking up an image of another vehicle located in the monitoring direction from the vehicle, and a vehicle detected / determined by the traveling state detection means and the distance change determination means The image of the other vehicle obtained by the image pickup means in a form of being superimposed on the media information currently displayed on at least a partial area on the display screen of the monitor by controlling the monitor according to the change state of the assumed distance from the other vehicle. And hop-up display control means.

[0013]

According to the first aspect of the invention, when the relative distance between the own vehicle and another vehicle changes, the information for instructing to visually recognize the monitoring direction is notified by the notification means. With such a notification, etc., the surrounding situation can be immediately judged, and each situation can be dealt with.

According to the second aspect of the present invention, when the distance detecting means detects the distance information from the own vehicle to another vehicle at every predetermined time, the distance information is stored at each time. Then, when new distance information is detected, the distance information stored immediately before is extracted by the comparison means, and the magnitudes of the distance information are compared / determined.

When it is determined by the traveling state detecting means that the vehicle is stopped, if the new distance information is determined to be larger, the control means controls the monitor and the speaker to control the predetermined information. For example, even if the driver is distracted by the monitor, the notification is displayed on the monitor or the speaker, for example, by displaying a message such as "the vehicle in front is moving" or outputting a sound to alert the person in the vehicle. You can learn about it, notice the situation around you, and respond immediately.

Further, according to the third aspect of the invention, when the relative distance between the own vehicle and the other vehicle changes, the monitor and the speaker are controlled by the control means to instruct a person in the vehicle to visually recognize the monitoring direction. Since information is displayed and voice output is performed, for example, a driver looking at a monitor,
By the display and voice, the surrounding situation can be immediately judged and each situation can be dealt with.

Further, in the invention according to claim 4, since the image of the other vehicle imaged by the image pickup means is displayed in a hop-up manner, the driver or the like who is distracted by the monitor sees the other image. You can check the status of the vehicle and immediately respond to it.

As a result, driving safety can be improved.

[0019]

Embodiments of the present invention will now be described in detail with reference to the drawings.

FIG. 1 is a block diagram showing a schematic configuration of a liquid crystal television according to an embodiment of an in-vehicle information providing apparatus of the present invention, and FIG. 2 is a diagram for explaining setting contents of respective distance information in a vehicle. .

In the figure, reference numeral 1 is a distance detecting section. The distance detection unit 1 is, for example, an ultrasonic sensor, and is arranged at the frontmost portion of the vehicle, such as a bumper.

The ultrasonic sensor is composed of a transmitter and a receiver. The transmitter and the receiver are ultrasonic microphones using a piezoelectric element such as PZT (lead diglycolic acid titanate), and are structured only with different characteristics. Are the same. This ultrasonic sensor is configured such that, for example, the transmitting unit transmits ultrasonic waves toward the front and the like, and the receiving unit receives the ultrasonic waves reflected by an obstacle existing in the front, such as a vehicle. There is. In the case of rearward monitoring, the ultrasonic sensor is installed in the rear bumper of the vehicle. Reference numeral 2 denotes a traveling state detection unit, which is provided in a traveling measurement system of the vehicle, such as a distance meter, and detects a traveling state or a stopped state of the vehicle. The running state detection unit 2 may be provided at a position other than the distance meter, for example, at a position where the states of the parking brake, the foot brake, the tire, the drive shaft, and the like can be detected.
A notification unit 3 includes, for example, a monitor having a liquid crystal display screen, an amplifier for outputting sound, and a speaker. Reference numeral 4 denotes a TV tuner which detects TV radio waves received by the antenna 5 and outputs the video information and audio information for each channel. Reference numeral 6 denotes a navigation system, which outputs map information and information for displaying the information indicating the vehicle position therein, if desired. A vehicle information storage unit 7 outputs vehicle information as desired. A control unit 8 is, for example, a microcomputer or the like to which the above-mentioned units are connected. The control unit 8 executes a plurality of functions, for example, a distance determination function and a notification control function (a video information superimposing function, a voice synthesizing function, etc.) based on the information input from each of the above units. The notification unit 3 is also used for displaying and outputting information of a plurality of media such as the television tuner 4, the navigation system 6, the vehicle information storage unit 7, and the like.

As shown in FIG. 2, inside the control unit 8,
As a reference value for determining the distance between vehicles, the position of the distance detection unit 1 attached to the front of the vehicle is set to 0 m,
The distance from here to the position X is set to 2 to 3 meters, the distance to the position Y is set to 5 meters, and the distance to the position Z is set to 100 meters, for example.

The operation of this on-vehicle information providing device will be described below.

First, referring to FIG. 3, the general operation of the vehicle-mounted information providing apparatus will be described.

In the case of this vehicle-mounted information providing device, the distance detecting unit 1 detects the distance to another vehicle existing ahead at a predetermined time interval regardless of whether the vehicle is stopped or running, and the distance data is controlled. Taken into the part 8.

In the control unit 8, the captured distance data is
The range of each of the distance set values X, Y, and Z shown in FIG. 2 is determined, and the distance data is stored together with the data.

At this time, the control unit 8 reads the immediately preceding data and compares it with the latest data every time each data is stored.

As a result of this comparison, when the data are different from each other, that is, when the relative distance between the own vehicle and the other vehicle (inter-vehicle distance) is changed as shown in FIG. Based on the relationship and the difference in distance (which vehicle has moved in which direction and by how much), it is determined whether or not there is a distance change from a certain set distance range within the monitoring range to another range.

As a result of this judgment, when there is a change in the distance from a certain set distance range within the monitoring range to another range, that is, when the own vehicle or another vehicle moves to another set range (step 302), each medium The message data corresponding to each situation is superimposed on the video signal which is input from the above and is output to the monitor of the notification unit 3 (step 303).

As a result, the image on which the message is superimposed is displayed on the display screen of the monitor (step 304).

When a predetermined time (several seconds) elapses after the message is displayed (step 305), the control unit 8 stops the superimposition of the message data (step 306), whereby the monitor display screen displays the original image. It returns to the state of only (step 307).

The operation in each situation will be described with reference to FIGS. 4 to 9.

As shown in FIG. 4, for example, when the own vehicle 31 is stopped and another vehicle 32 is present in the rear and is being monitored from the rear, the distance L between the stopped own vehicle 31 and the other vehicle 32 before moving is L. From
As shown in FIG. 5, the other vehicle 32 moves forward, the relative distance between the own vehicle 31 and the other vehicle 32 becomes shorter to the inter-vehicle distance L ′, and moreover, the range from the set distance 0 to Y shown in FIG. 6) when another vehicle enters within the set distance from 0 to X (within a distance of 5 meters or more) (within a dangerous distance: within 2 to 3 meters)
As shown in FIG. 5, the control unit 8 determines that the inter-vehicle distance L has changed to L '(step 401), and since the inter-vehicle distance has decreased by a predetermined value or more (step 402), the rear of the vehicle is displayed on the display screen of the monitor. Information indicating that the vehicle is approaching, that is, a message such as "rear attention" is displayed in a hop-up manner in a form superimposed on the original image to notify the person in the vehicle (step 403).

Further, as shown in FIG. 7, when the own vehicle 31 is stopped and the other vehicle 32 is present in the front and is in the front monitoring state, the inter-vehicle distance between the stopped own vehicle 31 and the other vehicle 32 before moving. From L,
As shown in FIG. 8, the other vehicle 32 moves forward, the relative distance between the own vehicle 31 and the other vehicle 32 becomes longer than the inter-vehicle distance L ′, and moreover, within the set distance 0 to Y shown in FIG. 2 ( Within 5 meters) and when there is a change in distance of a predetermined distance (about 1 meter), that is, when the inter-vehicle distance has expanded by a predetermined distance or more, as shown in FIG. It is determined that it has changed to L '(step 501),
Moreover, the inter-vehicle distance has increased by more than the specified value (step 50
2) As shown in FIG. 10, on the original image 31 displayed on the display screen 30 of the monitor, information indicating that the vehicle ahead is moving forward, that is, a message 32 such as "the vehicle ahead is moving" is superimposed. It is displayed on-screen in the displayed form to notify the person in the vehicle (step 503).

Next, the detailed operation of the vehicle-mounted information providing apparatus will be described with reference to FIG. FIG. 11 is a flow chart showing details of the control operation of the control unit.

As shown in the figure, the control unit of this vehicle-mounted information providing apparatus performs branching processing from pattern (1) to pattern (18). Each pattern will be described below.

Pattern (1): Step 101 → 102 → 10
3 → 109 → 110 In case of this pattern (1), first, in step 101,
The obstacle obtained from the distance detection unit 1, that is, the latest distance data to the vehicle ahead is stored in the register A. In step 102, it is determined from the data obtained from the running state detection unit 2 whether the vehicle is currently running or stopped, and in this case, the process proceeds to step 103 (running). In step 103, it is determined whether or not the vehicle was stopped last time, and in this case, the process proceeds to step 109 (driving from the stop). In step 109, "front caution" is displayed on the display device (in this case, since the vehicle has changed from the stop to the running, the driver will concentrate on the front for safety). Step 11
At 0, the data of the register A is stored in the register B, and this process ends.

Pattern (2): 101 → 102 → 103 → 104
→ 110 Since steps 101 → 102 are the same as the pattern (1), the description thereof will be omitted. In step 103, it is determined whether the vehicle was stopped last time, and in this case, the process proceeds to step 104 (running to running). In step 104, the data in register A and the data in register Z are compared, and in this case, the process proceeds to step 110 (register A ≧ register Z). In Step 110, register B
The data of the register A is stored in and the process is completed.

Pattern (3): 101 → 102 → 103 → 104
→ 105 → 109 → 110 Steps 101 → 102 → 103 are the same as the pattern (2), so the explanation is omitted.

In step 104, the data in the register A is compared with the data in the in-vehicle information providing device. In this case, the process proceeds to step 105 (register A <register Z). In step 105, the data in register B and the data in register Z are compared,
In this case, go to step 109 (register B ≧ register Z). In step 109, "Attention in front" is displayed on the display device (in this case, an obstacle is detected for the first time in the monitoring area (while running), so that the driver concentrates on the area in consideration of safety).
At step 110, the data of the register A is stored in the register B, and this processing is ended.

Pattern (4): 101 → 102 → 103 → 104
→ 105 → 106 → 109 → 110 Step 101 → 102 → 103 → 104 is pattern (3)
Since it is the same as, the explanation is omitted.

In step 105, the data in the register B and the data in the register Z are compared, and in this case, the process proceeds to step 106 (register B <register Z). In step 106, the data in register A and the data in register Y are compared, and in this case, the process proceeds to step 109 (register A <register Y). In step 109, "Attention ahead" is displayed on the display device (in this case, an obstacle was detected within the dangerous distance (during traveling), so that the driver should concentrate in front in consideration of safety). In step 110, the data of A is stored in B, and this processing is ended. Pattern (5): 101 → 102 → 103 → 104 → 105 → 106
→ 107 → 118 Steps 101 → 102 → 103 → 104 → 105 are the same as the pattern (4), so the description thereof is omitted.

In step 106, the data in the register A and the data in the register Y are compared, and in this case, the process proceeds to step 107 (register A ≧ register Y). In step 107, the data in register A and the data in register B are compared, and in this case, the process proceeds to step 118 (A ≧ B). In step 118, the data of (register A-register B) and the data of α (predetermined value) are compared, and in this case, the process ends ((register A-register B) ≦ α). Pattern (6): 101 →
102 → 103 → 104 → 105 → 106 → 107 → 118 → 110 Steps 101 → 102 → 103 → 104 → 105 → 106 → 107 are the same as the pattern (5), so the explanation is omitted. In step 118, the data of (register A-register B) and α
The data of (predetermined value) are compared, and in this case, the process proceeds to step 110 ((register A-register B)> α). At step 110, the data of the register A is stored in the register B, and this processing is ended.

Pattern (7): 101 → 102 → 103 → 104
→ 105 → 106 → 107 → 108 Steps 101 → 102 → 103 → 104 → 105 → 106 are the same as the pattern (6), so the explanation is omitted.

In step 107, the data in register A and the data in register B are compared, and in this case, the process proceeds to step 108 (register A <register B). In step 108, the data of (register B-register A) and the data of α (predetermined value) are compared, and in this case, the process ends ((register B-register A) ≦) α). Pattern (8): 101
→ 102 → 103 → 104 → 105 → 106 → 107 → 108 → 109 →
110 Steps 101 → 102 → 103 → 104 → 105 → 106 → 10
Since 7 is the same as pattern (7), its explanation is omitted.

In step 108, the data of (register B-register A) and the data of α (predetermined value) are compared, and in this case, the process proceeds to step 109 ((register B-register A)> α). In step 109, “Attention in front” is displayed on the display device (in this case, the obstacle is closer than α since the last time, so that the driver should concentrate on the front for safety). At step 110, the data of the register A is stored in the register B, and this processing is ended.

Pattern (9): 101 → 102 → 111 → 119
→ 110 At step 101, the distance (latest data) to the obstacle is stored in the register A based on the data obtained from the obstacle detection device. In step 102, it is determined whether the vehicle is currently traveling or is stopped based on the data obtained from the traveling state detection device. In this case, the process proceeds to step 111 (stopped). Step
In 111, determine whether you were driving last time, in this case 11
Go to 9 (run to stop). In step 119, the data in register A and the data in register Y are compared, and in this case, the process proceeds to step 110 (register A <register Y). Step 110
Then, the data of the register A is stored in the register B, and this processing ends.

Pattern (10): 101 → 102 → 111 → 11
9 → 120 → 110 Steps 101 → 102 → 111 are the same as the pattern (9), so the description thereof is omitted.

In step 119, the data in register A and the data in register Y are compared. In this case, step 120
To (register A ≧ register Y). In step 120, "outside the monitoring area" is displayed on the display device (in this case, since the area is outside the monitoring area (stopped), it is notified that the monitoring is not performed). At step 110, the data of the register A is stored in the register B, and this processing is ended.

Pattern (11): 101 → 102 → 111 → 11
2 → 117 → 120 → 110 Since steps 101 → 102 are the same as the pattern (10), the description thereof will be omitted. In step 111, it is determined whether the vehicle was running last time, and in this case, the process proceeds to step 112 (stop to stop). In step 112, the data in register A and the data in register Y are compared, and in this case, the process proceeds to step 117 (register A ≧ register Y). In step 117, the data in register B and the data in register Y are compared, and in this case, the process proceeds to step 120 (register B <register Y). In step 120, "outside the monitoring area" is displayed on the display device. (In this case, it informs that it is not monitoring because it has changed from the monitoring range (while stopped) to the outside of the monitoring range (while stopped)). Step 11
At 0, the data in the register A of the register B is stored, and this processing ends.

Pattern (12): 101 → 102 → 111 → 11
2 → 117 → 110 Steps 101 → 102 → 111 → 112 are patterns (1
Since it is the same as 1), its explanation is omitted.

At 117, the data of the register B and the register Y
Of the data, and in this case, go to 110 (register B ≧ register Y). In step 110, register A is registered in register B
Data is stored and this process ends.

Pattern (13): 101 → 102 → 111 → 11
2 → 113 → 109 → 110 Steps 101 → 102 → 111 are the same as the pattern (12), so the description thereof is omitted.

In step 112, the data in register A and the data in register Y are compared, and in this case, the process proceeds to step 113 (register A <register Y). In step 113, the data in the register B and the data in the register Y are compared, and in this case, the process proceeds to step 109 (register B ≧ register Y). In step 109, “Attention ahead” is displayed on the display device (in this case, the outside of the monitoring area (while the vehicle is stopped) is changed to the monitoring area (while the vehicle is stopped). get}. In step 110, register A is registered in register B
Data is stored and this process ends.

Pattern (14): 101 → 102 → 111 → 11
2 → 113 → 114 → 121 Steps 101 → 102 → 111 → 112 are patterns (1
Since it is the same as 3), its explanation is omitted.

In step 113, the data in the register B and the data in the register Y are compared, and in this case, the process proceeds to 114 (register B <register Y). In step 114, the data in the register A and the data in the register B are compared, and in this case, the process proceeds to step 121 (register A ≧ register B). In step 121, the data of (register A-register B) and the data of β (predetermined value) are compared, and in this case, the process ends ((register A-register B) ≦ β).

Pattern (15): 101 → 102 → 111 → 11
2 → 113 → 114 → 121 → 122 → 110 Steps 101 → 102 → 111 → 112 → 113 → 114 are the same as the pattern (14), so the explanation is omitted. At step 121, the data of (register A-register B) and β
The data of (predetermined value) is compared, and in this case, the process proceeds to step 122 ((register A-register B) <β). In step 122, "confirm front" is displayed on the display device (in this case, the obstacle is more than β away from the previous time, so the front is confirmed). At step 110, the data of the register A is stored in the register B, and this processing is ended.

Pattern (16): 101 → 102 → 111 → 11
2 → 113 → 114 → 115 → 109 → 110 Steps 101 → 102 → 111 → 112 → 113 are patterns
Since it is the same as 115, its explanation is omitted.

In step 114, the data in the register A and the data in the register B are compared, and in this case, the processing proceeds to 115 (A <
B). In step 115, the data of (register B-register A) and the data of β (predetermined value) are compared, and in this case, the process proceeds to step 109 ((register B-register A)).
> Β). In step 109, "Attention in front" is displayed on the display device (in this case, the obstacle is closer than β since the previous time, so that the driver should concentrate on the front for safety). Step 110
Then, the data of the register A is stored in the register B, and this processing ends.

Pattern (17): 101 → 102 → 111 → 11
2 → 113 → 114 → 115 → 116 Steps 101 → 102 → 111 → 112 → 113 → 114 are the same as the pattern (16), and the description thereof is omitted.

In step 115, the data of (register B-register A) and the data of β (predetermined value) are compared, and in this case, the process proceeds to step 116 ((BA) ≦ β). In step 116, the data in the register A and the data in the register X are compared, and in this case, the process ends (register A ≧ register X).

Pattern (18): 101 → 102 → 111 → 11
2 → 113 → 114 → 115 → 116 → 109 → 110 Steps 101 → 102 → 111 → 112 → 113 → 114 → 11
Since 5 is the same as pattern (17), its explanation is omitted.

In step 116, the data in the register A is compared with the data in the register X, and in this case, the process proceeds to 109 (register A <register X). In step 109, “Attention in front” is displayed on the display device (in this case, the obstacle is closer than before and within the danger distance (while the vehicle is stopped), so that the driver concentrates on the front for safety). Then, in step 110, the data of A is stored in B, and this processing ends. The above process is performed at regular intervals.

As described above, according to the vehicle-mounted information providing apparatus of the present embodiment, when the driver is distracted by the monitor while the vehicle is stopped due to waiting for a signal or the like, the vehicle ahead of the own vehicle 31 (another vehicle). Three
When 2 starts and goes away, another vehicle 3 behind the own vehicle 31
When the distance between the vehicle 2 and the vehicle 2 is rapidly narrowed, the control unit 8 determines the distance change with the other vehicle 32 based on the distance information detected by the distance detection unit 1 at every predetermined time, and moves in the monitoring direction. The notification unit 3 is controlled to prompt the user to visually recognize the predetermined information from the monitor or the speaker.

For example, when the vehicle is stopped due to waiting for a signal or the like, and the distance between the vehicle and the preceding vehicle is long, an on-screen display is displayed on the display screen 30 of the monitor, such as "the preceding vehicle is moving", and the sound is output from the speaker. The driver who is distracted by the monitor can immediately recognize the front and confirm that the preceding vehicle has moved, and can start the vehicle without hassle.

Further, when the distance between the vehicle and the vehicle behind becomes shorter, an on-screen display such as "rear attention" is displayed on the display screen 30 and a sound is output from the speaker to notify the driver. Immediately check the back and drive your vehicle away from the vehicle behind you without panicking,
You can avoid the danger.

As a result, with respect to changes in the state of other vehicles,
It becomes possible to deal with the situation without panicking and inconvenience others, and it is possible to improve driving safety.

Next, another embodiment of the on-vehicle information providing apparatus according to the present invention will be described.

FIG. 12 is a schematic block diagram of a vehicle-mounted information providing apparatus of another embodiment, and FIG. 13 is a diagram showing an example of a video displayed on the monitor of the vehicle-mounted information providing apparatus.

The same components as those in the above embodiment are designated by the same reference numerals and the description thereof will be omitted. As shown in FIG. 12, an image pickup unit such as a CCD camera as an image pickup unit is connected to the control unit 8. In the case of rearward monitoring, the image capturing unit 70 is provided at the rear of the vehicle, for example, at the top of the trunk, and captures images of other vehicles located in the monitoring direction from the vehicle. In the case of forward monitoring, the image pickup unit 7
0 is provided at the front of the vehicle.

In this case, when the control unit 8 determines that the notice is given, as shown in FIG. 13, the normal image 31 on the display screen 30 of the monitor is replaced by the image 71 captured by the image capturing unit 70.
Is displayed in a predetermined position with the picture-in-picture function (hop-up display).

As described above, according to the vehicle-mounted information providing apparatus of this embodiment, when a person in the vehicle is looking at the monitor, another vehicle behind the vehicle suddenly increases the traveling speed and approaches the vehicle. In some cases, when the driver is looking at the monitor while the vehicle is stopped, when another vehicle in front of the driver's own vehicle has left away, that is, when the driver has started, the monitor is displayed on the display screen 30 of the monitor. Since the actual image 71 of another vehicle existing in the direction is displayed in a hop-up manner, the driver can confirm the approaching state of the actual other vehicle and immediately perform a driving operation to separate the vehicle from the other vehicle. Driving safety can be improved.

Also in this case, video display and audio output may be used together, and a message may be displayed in accordance with the importance (urgent level and risk level) of notification.

[0075]

As described above, according to the present invention, even when a person in the boarding space is looking at the monitor, the change in distance between the front and rear vehicles is detected, and the visual confirmation of the monitoring direction is promoted based on the change. Predetermined information is displayed on the monitor or announced by a speaker through a voice, which allows people inside the vehicle to notice changes in the status of other vehicles and take immediate action to respond to them, which may cause a collision with another vehicle. It is possible to avoid nuisance to other vehicles and improve driving safety.

[Brief description of drawings]

FIG. 1 is a block diagram showing a configuration of an in-vehicle information providing device according to an embodiment of the present invention.

FIG. 2 is a diagram showing setting of each distance information X, Y, Z when the position where the distance detection unit of this vehicle-mounted information providing device is attached to the vehicle is set to 0.

FIG. 3 is a flowchart showing a schematic operation of the in-vehicle information providing device.

FIG. 4 is a diagram showing an initial inter-vehicle distance between the own vehicle and another vehicle in the state of rearward monitoring.

FIG. 5 is a diagram showing a case where another vehicle approaches the own vehicle in the state of rearward monitoring.

FIG. 6 is a flowchart showing an operation of the in-vehicle information providing device when the state changes from FIG. 4 to FIG.

FIG. 7 is a diagram showing an initial inter-vehicle distance between the own vehicle and another vehicle in the front monitoring state.

FIG. 8 is a diagram showing a case where another vehicle separates from the own vehicle in the front monitoring state.

FIG. 9 is a flowchart showing the operation of this in-vehicle information providing device when the state changes from FIG. 7 to FIG.

FIG. 10 is a diagram showing an example of an on-screen display in this vehicle-mounted information providing device.

FIG. 11 is a flowchart showing a detailed operation of the in-vehicle information providing device.

FIG. 12 is a block diagram showing a configuration of an in-vehicle information providing device according to another embodiment.

13 is a diagram showing an example of a hop-up display in the vehicle-mounted information providing apparatus of FIG.

[Explanation of symbols]

1 ... Distance detection unit, 2 ... Running state detection unit, 3 ... Notification unit, 4
... TV tuner, 5 ... Antenna, 6 ... Navigation system, 7 ... Vehicle information storage section, 8 ... Control section.

Claims (4)

[Claims] 1. An in-vehicle information providing device for providing information of a plurality of media to a person in a vehicle, the traveling state being provided in a traveling system of the vehicle and detecting a traveling state and a stopped state of the vehicle. A detection unit, a distance detection unit that is provided in at least one of the forefront portion and the rearmost portion of the vehicle, and that detects the relative distance from the vehicle to another vehicle located in the monitoring direction thereof at predetermined time intervals; Distance change determining means for determining whether the relative distance detected by the means has changed with time, and if the distance change determining means detects that the relative distance to another vehicle has changed, An in-vehicle device, characterized by including notification means for notifying information instructing a person in the vehicle to visually recognize a monitoring direction based on the vehicle state detected by the state detection means. The information providing apparatus. 2. An in-vehicle information providing device for providing information of a plurality of media from a monitor and a speaker arranged in a passenger space of the vehicle, wherein the in-vehicle information providing device is provided in a traveling system of the vehicle and detects a traveling state and a stopped state thereof. A traveling state detecting means, and a distance detecting means which is provided in at least one of the frontmost part and the rearmost part of the vehicle, and which detects the distance from the vehicle to another vehicle located in the monitoring direction at predetermined time intervals, A storage unit that stores the distance information detected by the distance detection unit at each detection time, and a previous distance information is extracted from the storage unit each time new distance information is detected by the distance detection unit, and the magnitudes of them are compared with each other. The comparing means for judging and the traveling state detecting means detects that the distance information of the vehicle is new when the vehicle is stopped. And a control means for controlling the monitor and the speaker to display predetermined information and output a voice so that a person in the vehicle can visually recognize the monitoring direction. In-vehicle information providing device. 3. An in-vehicle information providing device for providing information of a plurality of media from a monitor and a speaker arranged in a vehicle passenger space, the vehicle-provided information providing device being provided in a running system of the vehicle and detecting the running and stopped states thereof. Running state detecting means, which is provided in at least one of the foremost part and the rearmost part of the vehicle, distance detecting means for detecting a relative distance from the vehicle to another vehicle located in the monitoring direction thereof at predetermined time intervals, Distance change determination means for determining whether or not the relative distance detected by the distance detection means has changed with time, and the own vehicle and another vehicle detected / determined by the traveling state detection means and the distance change determination means. And a control means for controlling the monitor and the speaker to display predetermined information and output a voice according to a changing state of a relative distance between the monitor and the speaker. Vehicle information providing apparatus that. 4. An in-vehicle information providing device for providing information of a plurality of media from a monitor arranged in a boarding space of a vehicle, the traveling system being provided in a traveling system of the vehicle and detecting a traveling state and a stopped state thereof. State detecting means, distance detecting means provided at least at one of the foremost part and the rearmost part of the vehicle, for detecting a relative distance from the vehicle to another vehicle located in the monitoring direction at predetermined time intervals, and the distance. Distance change determination means for determining whether or not the relative distance detected by the detection means has changed with time, and at least one of a front portion and a rear portion of the vehicle, which is located in the monitoring direction from the vehicle Image pickup means for picking up an image of the vehicle, and the change state of the estimated distance between the own vehicle and another vehicle detected / determined by the traveling state detection means and the distance change determination means. Control means for controlling the monitor and for displaying, in at least a part of the display screen thereof, the image of another vehicle obtained by the image pickup means in a hop-up manner so as to be superimposed on the currently displayed media information. An in-vehicle information providing device characterized by: