JP2011207268A - Information display device for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an information display device for a vehicle, which enables a driver to start a vehicle with enhanced recognition of front conditions when contents including moving images are displayed while the vehicle is stopped.SOLUTION: When the vehicle is stopped following a traffic light, contents including moving images are displayed on a display screen 4. At a first predetermined time (five seconds, for example) before the traffic light turns green, the display of the contents is interrupted and front images taken by a front camera are displayed on the display screen 4. Instead of interrupting the display of the contents, the front images may be displayed while being superimposed on the display of the contents.

Description

  The present invention relates to a vehicle information display device.

  In vehicles, it has been proposed to provide content such as moving images to a driver using a display screen for navigation or the like. Patent Document 1 proposes that only a voice is provided during traveling while a highlight scene is displayed on a display screen while the vehicle is stopped. Patent Document 2 proposes that a fast-forward moving image is displayed on a display screen.

JP 2010-11312 A JP 2005-293168 A

  Displaying content including moving images on the display screen while stopping is preferable in terms of increasing enjoyment while driving and obtaining various information, but there is a consciousness of grasping the front situation while providing content. It will become thinner. For this reason, it is likely that the vehicle will start from a stopped state while the recognition of the front situation is sparse.

  The present invention has been made in consideration of the above circumstances, and its purpose is to be able to start with enhanced recognition of the front situation when displaying content including moving images on the display screen while the vehicle is stopped. Another object is to provide an information display device for a vehicle.

In order to achieve the above object, the following first solution is adopted in the present invention. That is, as described in claim 1 in the claims,
Stop determination means for determining that the vehicle is in a stopped state;
Content storage means for storing content including video,
A display unit that is provided at a position that is visible to the driver, and that displays content stored in the content storage unit when the stop determination unit determines that the vehicle is in a stopped state;
A traffic signal information acquisition means for acquiring information relating to a display state of a traffic signal installed on the course of the vehicle;
Display control means for predicting a future stop time based on the information acquired by the traffic signal information acquisition means, and stopping display of content on the display means when the remaining stop time is less than a first predetermined time; ,
It is supposed to be equipped with. According to the above solution, the driver can enjoy content including moving images displayed on the display screen and obtain various types of information while the vehicle is stopped. In addition, since the display of the content on the display screen is stopped when the traffic light is switched to the startable display state before the first predetermined time, the driver removes his line of sight from the display screen and prepares for the start. The front situation will be fully confirmed, and the vehicle will start after fully recognizing the front situation. Of course, the driver clearly recognizes that stopping the display of the content before the first predetermined time before the traffic signal is switched to the startable display state is a harbinger of the startable state. Be prepared to be aware of forward attention.

Preferred embodiments based on the first solution are as set forth in claims 2 and 4 in the claims. That is,
It further comprises a photographing means for photographing a video of the vehicle traveling direction,
The display control means, when the remaining stop time is less than the first predetermined time, causes the display means to display a front image taken by the photographing means instead of displaying the content;
(Corresponding to claim 2). In this case, since the front video is displayed on the display screen before the first predetermined time before the start, the driver can check the front situation even when the driver looks at the display screen. Is preferable for the driver to fully recognize the vehicle.

In order to achieve the above object, the following second solution is adopted in the present invention. That is, as described in claim 3 in the claims,
Photographing means for photographing an image of the vehicle traveling direction;
Stop determination means for determining that the vehicle is in a stopped state;
Content storage means for storing content including video,
A display unit that is provided at a position that is visible to the driver, and that displays content stored in the content storage unit when the stop determination unit determines that the vehicle is in a stopped state;
A traffic signal information acquisition means for acquiring information relating to a display state of a traffic signal installed on the course of the vehicle;
A future stop time is predicted based on the information acquired by the traffic signal information acquisition means, and when the remaining stop time is less than a first predetermined time, the display means superimposes the content display on the display means. Display control means for displaying a photographed front image;
It is supposed to be equipped with. According to the above solution, the driver can enjoy content including moving images displayed on the display screen and obtain various types of information while the vehicle is stopped. Further, since the front video is superimposed on the display screen in addition to the content before the first predetermined time before the signal is switched to the startable display state, the driver looks at the display screen. However, it will be possible to confirm the front situation, and start after fully understanding the front situation. Of course, the driver clearly recognizes that the display of the front image superimposed on the content before the first predetermined time before the traffic light is switched to the startable display state is a prelude to the startable state. As a result, he / she becomes strongly aware of forward attention in preparation for the start.

A preferred mode based on the second solution is as described in claim 4 and subsequent claims. That is,
The display control means ends display of the front video on the display means after a second predetermined time has elapsed from the display of the front video or when the brake pedal is operated to be released (Claim 4). Correspondence). In this case, it is preferable for prompting the user to return the line of sight after confirming the front situation through the front image displayed on the display screen.

  The focal length of the photographing means is changed so that a wide-angle image is obtained when there is no forward stop vehicle as compared to when it is present (corresponding to claim 5). In this case, when there is a front stop vehicle, the front vehicle is strongly recognized, while when there is no front vehicle, the front situation is widely recognized, which is more preferable for starting safely.

  The display control means highlights at least one of a pedestrian or a two-wheeled vehicle in the front image and displays it on the display means (corresponding to claim 6). In this case, a pedestrian or a two-wheeled vehicle that is a dangerous object can be strongly recognized.

A rear side photographing means for photographing the rear side of the vehicle,
When the winker is activated, the display control means causes the display means to display a rear side image corresponding to the direction indicated by the winker among the left and right rear sides photographed by the rear photographing means. Superimpose and display,
(Corresponding to claim 7). In this case, the situation on the rear side corresponding to the direction to bend is clearly recognized, and it is preferable to prevent a situation in which a dangerous material existing inside the turn is involved when starting. .

  ADVANTAGE OF THE INVENTION According to this invention, when displaying the content containing a moving image on a display screen during a stop, it can start in the state which heightened recognition of the front situation, and it becomes a safety preferable.

The side view which shows an example of the vehicle to which this invention was applied The figure which shows the example of a control system by this invention in a block diagram. The figure which shows the example by which the content was displayed on the display screen. The figure which shows the example in which the front vehicle was expanded and displayed on the display screen. The figure which shows the example by which the front condition was displayed on the display screen in the wide angle state. The figure which shows the example which highlighted the pedestrian in the example of FIG. The figure which shows the example which superimposed and displayed the image | video of the left rear side in the example of FIG. The figure which shows the example which superimposed and displayed the front image | video on the display of the content of FIG. The figure which shows the example which displayed the map for navigation on the display screen. The flowchart which shows the example of control of this invention.

  In FIG. 1, a vehicle V is a controller U which will be described later, a front camera 1 as a front photographing means for photographing the front, a radar 2 for detecting a front obstacle, and a rear photographing means for photographing the rear side. Left and right rear side cameras 3 (the right side rear camera is not shown). The front camera 1 can change (adjust) the focal length, and can take a zoom video or a wide-angle video by changing the focal length. The radar 2 is for detecting a dangerous object such as a pedestrian or a two-wheeled vehicle as a front obstacle. However, the dangerous object is extracted by a software process from an image captured by the front camera 1 instead of the radar 2. You can also do it.

  The vehicle V has a controller U configured using a microcomputer that performs control as described later. Information acquired by the cameras 1 and 3 and the radar 2 and other information to be described later are input to the controller U, and the display content displayed on the display screen 5 is appropriately changed. The display screen 4 is provided at a position that is easily visible from the driver, such as the center position of the instrument panel. In the embodiment, the display screen 4 is a display screen for navigation. However, a windshield monitor that projects an image in front of the front windscreen, an air conditioning and an operation unit for audio operation provided on an instrument panel, etc. It may be a monitor for displaying.

  The vehicle V has wireless communication means 4 and 5. Via this wireless communication means 4, wireless communication with the traffic control base station K1 is possible. In addition, wireless communication is possible with the content base station K2 that is a distribution destination of content including moving images via the wireless communication means 5. The base station K1 distributes information related to the switching time of the display state of each traffic light (so-called DSSS function), so that the display state of the vehicle V is switched at which time the traffic light in the traveling direction changes. It is possible to obtain information on whether or not For example, it is possible to obtain the time at which the traffic light immediately before the vehicle stops is switched from the stop display state (red light state) to the passable display state (green light state) where the vehicle can start. In addition, the base station K2 distributes various contents including moving images. The contents include entertainment, such as movies, sports, and dramas, news, traffic information, weather information, map information, and various nearby facilities. Various information such as information can be distributed. The controller U temporarily stores the delivered content in the storage means, and displays the content on the display screen 4 on the condition that the vehicle is stopped. The content is not limited to the content distributed from the base station K2, but may be content stored in various storage media such as a DVD brought in by the driver.

  FIG. 2 shows an example of a control system according to the present invention. In FIG. 2, the controller U receives information from the cameras 1, 3, radar 2, and wireless communication means 4, 5 described above, as well as vehicle speed signals from the vehicle speed sensor 11, brakes via the wireless LAN 10. A brake operation signal from the sensor 12 and a winker operation signal from the winker (direction indicator) sensor 13 are input.

  The traffic light information acquired using the wireless communication means 5 is the signal cycle information receiving unit 21 that selectively obtains the display state switching time only for the traffic light in the traveling direction of the vehicle V, and is scheduled to stop. It is output to the time calculation processing unit 21. When the stop determination unit 23 determines that the vehicle is to be stopped, the scheduled stop time calculation processing unit 21 calculates the remaining time until the next start, that is, the stop time of the current stop. The calculated stop time is output to the display processing unit 24 described later. In addition, content including a moving image acquired using the wireless communication unit 6 is input to the storage unit 25 and temporarily stored. The content stored in the storage unit 25 is output to the front video display processing unit 24. The output of the front video display processing unit 24 is input to the display control processing unit 26 that controls the display content of the display screen 4.

  On the other hand, the video showing the front situation obtained by the front camera 1 and the video showing the rear side situation obtained by the rear side camera 3 are respectively input to the front video creation processing unit 31. Further, the information acquired by the radar 2 is input to the obstacle detection unit 32, and dangerous objects such as pedestrians and two-wheeled vehicles are extracted in addition to the preceding vehicle, and information on the extracted dangerous objects is generated as a front image. Input to the processing unit 31. When the front vehicle is extracted by the obstacle detection unit 32, the vehicle is input to the focal length processing unit 34 of the front camera 1 via the front vehicle detection processing unit 33. When the front obstacle is detected by the front obstacle detection unit 32, the focal length processing unit 34 obtains a zoom image by increasing the focal length of the front camera 1, and the front vehicle is not extracted. Is a state in which the focal length of the front camera 1 is shortened to obtain a wide-angle image. The output from the front video creation processing unit 31 is input to the front video display processing unit 24.

  Next, various functions performed by the front video display processing unit 24, the front video creation processing unit 31, and the display control processing unit 26 will be described. First, the front video display processing unit 24 selects content corresponding to the stop time calculated by the planned stop time calculation processing unit 22 from the storage unit 25 (for example, within 30 seconds if the stop time is 30 seconds). Select content).

  The front image creation processing unit 31 outputs a zoom image of the front vehicle to the front image display processing unit 24 when the front vehicle exists, and displays a wide-angle image of the front situation when the front vehicle does not exist. The data is output to the processing unit 24. Further, when a pedestrian is present in the wide-angle video in the front situation, the front video creation processing unit 31 outputs the wide-angle video in the front situation in which the pedestrian is highlighted to the front video display processing unit 24. Further, when the winker is operated, the front video creation processing unit 31 superimposes the rear side video corresponding to the winker operating direction on the wide-angle video of the front situation and outputs it to the front video display processing unit 24. .

  The display control processing unit 26 also receives outputs from the stop determination unit 23 and the start determination unit 27. When it is determined that the vehicle is stopped by the stop determination unit 23, the display control processing unit 26 displays the content on the display screen 4 until the remaining stop time reaches a first predetermined time (for example, 3 to 5 seconds). Display. When the remaining stop time is less than the first predetermined time, the display on the display screen 4 is replaced with the content display, and the front video processed by the front video display processing unit 24 is displayed.

  An example of a video displayed on the display screen 4 will be described with reference to FIGS. First, FIG. 3 is a display example when the vehicle is stopped and the remaining stop time is equal to or longer than the first predetermined time. At this time, the content selected from the content stored in the storage unit 25 is displayed on the display screen 4. (In FIG. 3, two people N1 and N2 in the drama are displayed).

  4 to 8 show display examples when the vehicle is stopped but the remaining stop time is less than the first predetermined time. First, FIG. 4 shows a case where two front vehicles VX1 and VX2 are present in front of the vehicle V and are separated from each other in order to wait for a signal. In this case, the front vehicles VX1 and VX2 are displayed as zoom images.

  FIG. 5 is a display example in the case where there is no forward vehicle, and the front situation is displayed as a wide-angle image, so that the driver can recognize the front situation over a wide range. In FIG. 6, the front situation is the same as in FIG. 5, but the pedestrians H1 to H3 as dangerous objects are highlighted in a rectangular frame.

  FIG. 7 shows the case where the front situation is the same as in FIG. 6 but the winker is operated in the left turn direction. That is, in the lower left corner of the display screen 4, a left rear side image corresponding to the direction in which the blinker is operated is displayed so as to be superimposed on a video indicating the front situation (in the example of FIG. 7, as a rear side image). The state where the two-wheeled vehicle Z is displayed is shown). Although illustration is omitted, when the blinker is operated in the right turn direction, the image on the right rear side is superimposed on the lower right corner of the display screen 4. By displaying an image of the rear side corresponding to the turning direction (that is, the rear side that is the inside of the turn), it is preferable to prevent a situation in which a motorcycle or the like existing inside the turn is involved when starting. Become.

  In FIG. 8, the remaining stop time is less than the first predetermined time, but the content is displayed and the image of the front situation is displayed superimposed on the display of the content. In this case, it is possible to grasp the forward situation while enjoying the content. In the embodiment, the brake pedal is operated after a second predetermined time (for example, 3 seconds, a time equal to or shorter than the first predetermined time) has elapsed since the start of display as shown in FIGS. When it is detected that the opening operation has been performed, the display as shown in FIGS. 4 to 8 is stopped because the driver has sufficiently recognized the forward situation.

  FIG. 9 shows a display example on the display screen 4 after the vehicle has stopped and started. In the embodiment, the display screen 4 is used for navigation, so that the map is displayed. If the display screen 4 displays an operation unit for air conditioning or audio, for example, the screen for air conditioning or audio operation is displayed after the start.

  FIG. 10 is a flowchart showing the contents of control by the controller U. This flowchart will be described below. In the following description, S indicates a step. First, in S1, traffic signal information (information regarding the time at which the signal display state is switched) is acquired. Thereafter, when it is confirmed in S2 that the vehicle is currently stopped (when the determination in S2 is YES), a scheduled stop time TS is calculated in S3. This stop time TS is calculated by subtracting the current time t from the scheduled time TB when the traffic light immediately before the vehicle V switches from the red display state to the blue display state. Since the current time t gradually changes with the passage of time, the scheduled stop time TS is gradually changed (updated) to a smaller value as the stop continues.

  After S3, in S4, the appropriate content is acquired (selected) by playing during the scheduled stop time TS, and the acquired content is played in S5. After S5, in S6, it is determined whether or not the scheduled stop time TS is less than a first predetermined time α (for example, 5 seconds). If the determination in S6 is NO, the process returns to S5 and the content is continuously played back.

  If the determination in S6 is YES, it is determined in S7 whether there is a vehicle ahead. When the determination in S7 is YES, in S8, the image acquired by the front camera 1 is a zoom image. Then, in S9, an image of the front situation that is a zoom image is displayed (display as shown in FIG. 4). Thereafter, in S10, it is determined whether or not the brake pedal has been released, or whether or not a second predetermined time β (for example, 3 seconds) has elapsed since the start of display of the front video. If NO in this determination, the process returns to S9. Further, when the determination in S10 is YES, the process proceeds to S11 and is switched to normal display on the display screen 4 (in the embodiment, the display screen 4 is for navigation, so the map display as shown in FIG. 9). .

  If the determination in S7 is NO, in S12, the image acquired by the front camera 1 is switched to a wide-angle image. Thereafter, in S13, it is determined whether or not there is a pedestrian ahead. If the determination in S13 is YES, the pedestrian is highlighted in S14 (display as shown in FIG. 6). After this S14 or when the determination in S13 is NO, it is determined in S15 whether or not the winker is operating. When the determination in S15 is YES, in S16, a rear side image corresponding to the turn signal operating direction is displayed (display as shown in FIG. 7). After S16 or when NO is determined in SS15, the process proceeds to S9 to display a front image (display as shown in FIG. 6 or 7 depending on the situation).

  Although the embodiment has been described above, the present invention is not limited to the embodiment, and can be appropriately changed within the scope described in the scope of claims. For example, the invention includes the following cases. . As described with reference to FIG. 8, when the vehicle is stopped and the remaining stop time is less than the first predetermined time α, the front video may be displayed superimposed on the content display. The focal length of the front camera 1 may be always kept constant regardless of the presence or absence of the front vehicle. Acquisition of the content in S4 of FIG. 10 is obtained by delivery from the base station K2 according to the scheduled parking time TS, and the storage unit 25 only temporarily stores the delivered content. (Buffer function). When the vehicle is stopped and the remaining stop time is less than the first predetermined time α, the content display may be stopped and the forward video may not be displayed (return to a normal display mode such as a navigation map display). In this case, nothing may be displayed on the display screen 4 until the actual start is detected, and the driver's consciousness may be directed forward. The highlighting may be performed not only for pedestrians but also for two-wheeled vehicles, or only two-wheeled vehicles may be highlighted. The content to be played back may be played back every time the vehicle stops, assuming that the content is long enough to be played back only once. Of course, the object of the present invention is not limited to what is explicitly stated, but also implicitly includes providing what is substantially preferred or expressed as an advantage.

  The present invention is suitable as an information display device using a display screen mounted on a vehicle.

V: Vehicle K1: Base station (for signal information distribution)
K2: Base station (for content distribution)
U: Controller 1: Front camera 2: Front radar 3: Rear side camera 4: Monitor (display screen)
5, 6: Wireless communication means 11: Vehicle speed sensor 12: Brake sensor 13: Direction indicator sensor

Claims (7)

Stop determination means for determining that the vehicle is in a stopped state;
Content storage means for storing content including video,
A display unit that is provided at a position that is visible to the driver, and that displays content stored in the content storage unit when the stop determination unit determines that the vehicle is in a stopped state;
A traffic signal information acquisition means for acquiring information relating to a display state of a traffic signal installed on the course of the vehicle;
Display control means for predicting a future stop time based on the information acquired by the traffic signal information acquisition means, and stopping display of content on the display means when the remaining stop time is less than a first predetermined time; ,
A vehicle information display device comprising: In claim 1,
It further comprises a photographing means for photographing a video of the vehicle traveling direction,
The display control means, when the remaining stop time is less than the first predetermined time, causes the display means to display a front image taken by the photographing means instead of displaying the content;
A vehicle information display device characterized by the above. Photographing means for photographing an image of the vehicle traveling direction;
Stop determination means for determining that the vehicle is in a stopped state;
Content storage means for storing content including video,
A display unit that is provided at a position that is visible to the driver, and that displays content stored in the content storage unit when the stop determination unit determines that the vehicle is in a stopped state;
A traffic signal information acquisition means for acquiring information relating to a display state of a traffic signal installed on the course of the vehicle;
A future stop time is predicted based on the information acquired by the traffic signal information acquisition means, and when the remaining stop time is less than a first predetermined time, the display means superimposes the content display on the display means. Display control means for displaying a photographed front image;
A vehicle information display device comprising: In claim 2 or claim 3,
The display control means ends the display of the front video on the display means after a second predetermined time has elapsed from the display of the front video or when the brake pedal is released. Display device. In claim 2 or claim 3,
The information display device for a vehicle, wherein the focal length of the photographing means is changed so that a wide-angle image is obtained when there is no forward stop vehicle as compared to when the vehicle is stopped. In claim 2 or claim 3,
The vehicle information display device, wherein the display control means highlights at least one of a pedestrian or a two-wheeled vehicle in a front image and causes the display means to display it. In claim 2 or claim 3,
A rear side photographing means for photographing the rear side of the vehicle,
When the winker is activated, the display control means causes the display means to display a rear side image corresponding to the direction indicated by the winker among the left and right rear sides photographed by the rear photographing means. Superimpose and display,
A vehicle information display device characterized by the above.

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