JP2011020539A - Rear-seat image display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an on-vehicle image display device which allows a rear seat occupant to recognize and predict current and next operations by the contents of a message image displayed according to a running situation, when the occupant rides on the rear seat and uses an on-vehicle rear-seat image display device. <P>SOLUTION: According to the running situation of a vehicle detected by a running situation detection means 12 for detecting the running situation of the vehicle, and a vehicle situation detected by a vehicle situation detection means 13 for detecting the state within the vehicle, an image control means 14 synthesizes the message images on an image created by an image creation means 11 for a certain time. This allows the rear seat occupant to simultaneously recognize and predict the current and next operations while reviewing television images or the like in the vehicle, thereby reducing loads and dangers imposed on the rear seat occupant. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a rear-seat video display device that is mounted for a rear seat of a passenger car and provides a video to a passenger on the rear seat of the vehicle.

In recent years, an increasing number of vehicles are equipped with displays for displaying images of televisions, VTRs, DVDs, games, and the like for rear seats.
On the other hand, in an automobile, vibrations caused by the engine of the vehicle and other driving mechanisms, road terrain, swells, road surface conditions, curbs, and other vibrations that the vehicle chassis receives from outside the vehicle, such as vibration, rocking, and impact Vibrations exist, and there are also vibrations and vibrations caused by automobile acceleration and braking.

  When humans are placed in a new movement environment such as riding a passenger car in this way, the actual sensory information pattern differs from the sensory information pattern stored in the central nervous system. It becomes confusing without being able to grasp (sense confusion). In this case, pattern recognition of new sensory information occurs in the central nervous system, but it is thought that motion sickness (motion sickness) develops in this adaptation process. Especially when you are reading a book in a car or gazing at the display, the line of sight is fixed, and the visual information does not match the vestibule information or somatosensory information from the movement of the car. It is supposed to occur. It is said that in a passenger car, it is better to close your eyes or look farther away in order to avoid confusion between the viewing angle and the vestibule. In addition, it is said that drivers are less likely to get sick than passengers because they actively take the position of the head with the least change in acceleration by predicting the tension associated with exercise and the movement of the vehicle. (For example, refer nonpatent literature 1).

  As countermeasures for the above-mentioned motion sickness, it has been practiced to prevent / reduce sickness with anti-motion sickness drugs such as antihistamines (for example, see Non-Patent Document 2).

  In addition, as a countermeasure against motion sickness, there is a headrest that can be swung so that the head of the occupant is swung according to the turning state when the vehicle is turning (see, for example, Patent Document 1).

  In addition, as a countermeasure against motion sickness, there is one in which an occupant other than the driver recognizes and predicts the current and next movements of the passenger car by using a display device for turning left / right, acceleration / deceleration and stop of the vehicle (see, for example, Patent Document 2). ).

  On the other hand, as a vehicle warning guidance to the driver, there is a driving warning guidance device that detects dangerous driving and warns the driver by voice (for example, see Patent Document 3).

  Furthermore, the use of seat belts in the rear seats is obligated by the Road Traffic Act. However, in many cases, they are not worn, and when a traffic accident occurs at that time, the passengers in the rear seats are regarded as issues of the release from the vehicle and the harm to the passengers in the front seats.

  In addition, there is no vehicle equipped with a display device that transmits information to the driver that the passenger in the rear seat is not wearing the seat belt.

  In many cases, the driver is driving without realizing that the door of the rear seat is a half-door or the window is left open.

  In addition, there are many cases where the passengers in the rear seat pass by the vehicle without being aware of the situation outside (the weather, scenery, and landmarks) because they are watching the video displayed on the rear seat display. .

Japanese Patent Laid-Open No. 7-252 (FIG. 1) JP 2002-154350 A (FIG. 1) JP 2002-251699 A (FIG. 1)

Takashi Matsunaga, Noriaki Takeda “Swaying Diseases and Space Sickness” Otolaryngology, Vol. 81, no. 8, P.I. 1095-1120, 1998 Junichi Toyokichi “Drug internal therapy” JOHNS, Vol. 6, no. 9, 1990-9

  However, the above-mentioned countermeasures against motion sickness are concerned about side effects such as causing drowsiness, and the headrest resting countermeasure against motion sickness cannot completely prevent shaking.

  In addition, the above-mentioned countermeasure against motion sickness by the display device allows the occupant on the rear seat of the passenger car to check the right / left turn, acceleration / deceleration, and stop indications at the same time when the occupant is watching the video on the TV or the like. The problem was that it was difficult to prevent motion sickness.

  While allowing the rear seat occupant to view the video, it can simultaneously recognize and predict the current and next movements of the vehicle, vehicle information and outside information, and quickly convey the information to the rear seat occupants who are difficult to transmit information. An object of the present invention is to provide a rear seat video display device capable of reducing the above-mentioned problem and capable of alerting and warning.

In the rear seat video display device according to the present invention, the video control means generates a message video in accordance with the running situation of the vehicle detected by the running situation detecting means and the running situation in the vehicle detected by the vehicle situation detecting means. The message video is superimposed on the content video displayed by the display means.

  According to the present invention, it is possible to recognize and predict the current and next movement of a passenger car at the same time while allowing a passenger in the rear seat to view a video in the vehicle, and even a passenger in the rear seat that is difficult to transmit information is dangerous. It is possible to convey appropriate information appropriately and to ensure the safety of passengers. In addition, this configuration can prevent car sickness and the like and can significantly reduce the burden on the passenger.

The figure which shows the state which the passenger | crew of the backseat in the 1st Embodiment of this invention is using the video display device for vehicles. 1 is a block diagram of a vehicle video display device according to a first embodiment of the present invention. The flowchart figure of the video control by the video display apparatus for vehicles in the 1st Embodiment of this invention. The figure showing the example of a screen at the time of driving | running | working at the straight ahead and fixed speed of the video display apparatus for vehicles in the 1st Embodiment of this invention. The figure showing the example of a screen at the time of the left turn detection of the video display apparatus for vehicles in the 1st Embodiment of this invention The figure showing the example of a screen at the time of the right turn detection of the video display apparatus for vehicles in the 1st Embodiment of this invention The figure showing the example of a screen at the time of the rapid deceleration detection of the video display apparatus for vehicles in the 1st Embodiment of this invention The figure showing the example of a screen at the time of the rapid acceleration detection of the video display apparatus for vehicles in the 1st Embodiment of this invention The figure showing the example of a screen at the time of the seat belt non-wearing detection of the video display apparatus for vehicles in the 1st Embodiment of this invention The figure showing the example of a screen at the time of the door opening / closing detection of the video display apparatus for vehicles in the 1st Embodiment of this invention The figure showing the example of a screen at the time of the window opening / closing detection of the video display apparatus for vehicles in the 1st Embodiment of this invention The block diagram of the video display apparatus for vehicles in the 2nd Embodiment of this invention The block diagram of the video display device for vehicles in a 3rd embodiment of the present invention. The figure showing the example of a screen at the time of vehicle position detection (destination information) of the video display apparatus for vehicles in the 3rd Embodiment of this invention. The figure showing the example of a screen at the time of vehicle position detection (landscape information) of the video display apparatus for vehicles in the 3rd Embodiment of this invention. The figure showing the example of a screen at the time of vehicle position detection (landmark information) of the video display apparatus for vehicles in the 3rd Embodiment of this invention. The block diagram of the video display device for vehicles in a 4th embodiment of the present invention.

  Hereinafter, embodiments of the present invention will be described.

(First embodiment)
A rear seat video display apparatus according to a first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a diagram illustrating a state in which a passenger in a rear seat uses a rear seat video display device in the passenger car according to the first embodiment of the present invention.

  For passengers in the rear seats of passenger cars, the center console section next to the front seat and the video display device on the dashboard obstruct the front seat seat, making it difficult to check the images on the center console section and dashboard next to the front seat. The rear seat of a passenger car can be obtained by installing a video display device 100 of a suspended type on the ceiling of the vehicle, a video display device 101 of a seat back installation type of the front seat, and a console box type video display device 102 of the seat back of the front seat. Even so, it is possible to reliably check various images.

  The configuration of the rear seat image display apparatus according to the first embodiment of the present invention will be described with reference to FIG.

  FIG. 2 is a block diagram of the rear seat image display apparatus according to the first embodiment of the present invention.

The rear seat video display device 1 includes a video generation unit 11 that generates a video, a traveling state unit 12 that detects a traveling state of the vehicle, a vehicle state detection unit 13 that detects a vehicle state in the vehicle, and a video generation unit. 11 includes a video control unit 14 that controls the video generated by the video signal 11 and a video display unit 15 that displays the video synthesized by the video control unit 14.

  The video generation unit 11 generates a content video such as a television, a VTR, a DVD, and a game and outputs the content video to the video control unit 14.

  The driving condition detection means 12 turns the vehicle right or left using any of the vehicle operation states such as right / left turn by steering wheel operation, right / left turn by blinker operation, deceleration by brake operation, stop by hazard lamp operation, acceleration by accelerator operation, etc. Acceleration / deceleration is detected by a sensor. Alternatively, the vehicle acceleration may be detected by using acceleration / deceleration by a speed sensor, acceleration / deceleration by an acceleration sensor, angular velocity by an angular velocity sensor, vertical vibration by a vibration sensor, or the like. .

  The vehicle status detection means 13 detects vehicle information by a switch or the like using any of the in-vehicle states such as attachment / detachment of the seat belt of the rear seat, opening / closing of the door of the rear seat, opening / closing of the rear seat door.

  The video control unit 14 acquires data of the vehicle left / right turn, acceleration / deceleration, vertical / horizontal / front / rear acceleration, and vehicle safety status detected by the traveling status detection unit 12 and the vehicle status detection unit 13. The video control unit 14 causes the video generation unit 11 to generate a message video based on this data. The video control unit 14 superimposes the message video on the content video generated by the video generation unit 11. Then, the video control unit 14 outputs the superimposed video to the video display unit 15.

  The video display means 15 is composed of at least one of a liquid crystal display, a CRT (Cathode Ray Tube), an organic EL (Electro-Luminescence) display, a plasma display, and a head-up display. The video display means 15 displays the content video acquired from the video control means 14 and the video in which the message video is superimposed on the content video.

  Next, video control by the rear seat video display device in the first embodiment of the present invention will be described. FIG. 3 is a flowchart of video control by the rear seat video display device according to the first embodiment of the present invention.

  In FIG. 3, as shown in step S <b> 200, the display unit 15 of the rear seat video display device 1 displays a video such as a television, a VTR, a DVD, or a game generated by the video generation unit 11.

  As shown in step S <b> 201, the video control unit 14 determines whether the traveling state detection unit 12 has detected a traveling state such as a vehicle turning left / right, acceleration / deceleration, vertical / left / right, front / rear acceleration of the vehicle.

  If “YES” in the step S201, as shown in the step S202, the video control unit 14 causes the video generation unit 11 to generate a message video corresponding to the traveling situation.

  If “NO” in the step S201, as shown in the step S203, the video control means 14 uses the vehicle condition detecting means 13 to attach / detach the seat belt of the rear seat, open / close the door of the rear seat, open / close the rear seat door, etc. It is determined whether the in-vehicle state is detected.

  If “YES” in the step S203, the video control means 14 causes the video generation means 11 to generate a message video corresponding to the vehicle situation, as shown in step S204.

  Then, after step S202 or after step S204, as shown in step S205, the control unit 14 superimposes the message video generated by the video generation unit 11 on the video output by the video generation unit 11.

  After step S205, as shown in step S206, the video display means 15 displays a video in which the message video is superimposed on the content video generated by the video generation means 11, such as a television, a VTR, a DVD, or a game.

  If “NO” in the step S203, in other words, if the video control means 14 does not detect the traveling condition from the traveling condition detection means 12, and does not detect the vehicle condition from the vehicle condition detection means 13, in the step S206. The video display means 15 displays the video generated by the video generation means 11 such as a television, VTR, DVD, game or the like.

  Screen examples of the rear seat video display device according to the first embodiment of the present invention will be described with reference to FIGS.

  FIG. 4 (a) is a diagram illustrating a screen example when the vehicle image display apparatus according to the first embodiment of the present invention travels straight and at a constant speed. FIG. 4A shows a state in which the vehicle is not subjected to lateral acceleration and longitudinal acceleration when the vehicle is traveling straight and at a constant speed. At this time, the video control unit 14 displays the video generated by the video generation unit 11 on the video display unit 15 as it is. At this time, the message displayed on the image display means 15 does not display any message image.

  FIG. 4B is a diagram illustrating a screen example when the left sudden turn is detected in the vehicular video display apparatus according to the first embodiment of the present invention. When the vehicle turns left or turns left, the traveling state detection means 12 detects leftward acceleration or leftward vehicle steering state, and the video control means 14 determines a reference value or more based on this detection result. If it is acceleration, a message video is generated for a predetermined time on the video generated by the video generation unit 11 and displayed on the video display unit 15. At this time, the video displayed on the video display means 15 is displayed as shown in FIG. 4 (b), alerting the passenger in the rear seat, and reducing the burden and danger to the passenger.

  FIG.4 (c) is a figure showing the example of a screen at the time of the right turn detection of the video display apparatus for vehicles in the 1st Embodiment of this invention. When the vehicle turns right or turns in the right direction, the traveling state detection unit 12 detects the acceleration in the right direction or the vehicle steering state in the right direction, and the video control unit 14 determines whether the vehicle is above the reference value based on the detection result. If it is acceleration, a message video is generated for a predetermined time on the video generated by the video generation unit 11 and displayed on the video display unit 15. At this time, the video displayed on the video display means 15 is displayed as shown in FIG. 4C, alerting the passenger in the rear seat, and reducing the burden and danger to the passenger.

  FIG.4 (d) is a figure showing the example of a screen at the time of the rapid deceleration detection of the video display apparatus for vehicles in the 1st Embodiment of this invention. When the vehicle accelerates, the traveling state detection means 12 detects the forward acceleration or acceleration vehicle steering state, and based on this result, the video control means 14 A message video is generated for a predetermined time on the video generated by the generating unit 11 and displayed on the video display unit 15. At this time, the video displayed on the video display means 15 is displayed as shown in FIG. 4 (d), alerting the passenger in the rear seat, and reducing the burden and danger to the passenger.

FIG. 4 (e) is a diagram illustrating a screen example at the time of rapid acceleration detection of the vehicle image display device according to the first embodiment of the present invention. When the vehicle decelerates, the traveling state detection means 12 detects the backward acceleration or the vehicle steering state of deceleration, and based on this result, the video control means 14 A message video is generated for a predetermined time on the video generated by the generating unit 11 and displayed on the video display unit 15. At this time, the video displayed on the video display means 15 is displayed as shown in FIG. 4 (e), alerting the passenger in the rear seat and reducing the burden and danger to the passenger.

  FIG. 4F is a diagram illustrating an example of a screen when the seat belt is not worn in the vehicular video display device according to the first embodiment of the present invention. When the vehicle starts without wearing the seat belt of the rear seat, the vehicle condition detecting means 13 detects the seat belt wearing condition of the rear seat, and the video control means 14 A message video is generated on the generated video for a predetermined time and displayed on the video display means 15. At this time, the video displayed on the video display means 15 is displayed as shown in FIG. 4 (f), which alerts the passenger in the rear seat and reduces the burden and danger to the passenger.

  FIG. 4 (g) is a diagram illustrating a screen example when door opening / closing is detected in the vehicular video display apparatus according to the first embodiment of the present invention. When the vehicle starts with the rear seat door in a half-door state, the vehicle status detection means 13 detects the status of the rear seat door, and the video control means 14 generates the video generation means 11 based on this result. A message video is generated on the video for a predetermined time and displayed on the video display means 15. At this time, the video displayed on the video display means 15 is displayed as shown in FIG. 4G, alerting the passenger in the rear seat, and reducing the burden and danger to the passenger.

  FIG. 4 (h) is a diagram illustrating a screen example when window opening / closing is detected in the vehicular video display device according to the first embodiment of the present invention. When the vehicle stops with the rear seat window open, the vehicle status detection means 13 detects the status of the rear seat door, and the video control means 14 generates the video generation means 11 based on this result. A message video is generated on the video for a predetermined time and displayed on the video display means 15. At this time, the video displayed on the video display means 15 is displayed as shown in FIG. 4 (h), alerting the passenger in the rear seat and reducing the burden and danger to the passenger.

  According to the rear seat image display device 1 of the first embodiment of the present invention, the vehicle traveling state and the state in the vehicle detected by the traveling state detecting means 12 for detecting the traveling state of the vehicle are detected. In response to the vehicle situation detected by the vehicle situation detection means 13, the video control means 14 synthesizes a message video on the video generated by the video generation means 11 for a certain period of time. While viewing the video, the current and next movements of the passenger car can be recognized and predicted at the same time, and the burden and danger of the passenger can be reduced.

  Thereby, the symptoms of car sickness can also be reduced. In particular, when the occupant of the rear seat, such as a child, concentrates on the image displayed on the image display means 15 and is not looking at the scenery outside the vehicle, the effects of acceleration / deceleration and right / left turn of the vehicle are great. Compared to watching, the effect is great.

(Second Embodiment)
A rear seat video display apparatus according to a second embodiment of the present invention will be described with reference to FIG. FIG. 5 is a block diagram of a rear seat video display apparatus according to the second embodiment of the present invention. Since the present embodiment is configured in substantially the same manner as the first embodiment described above, the same reference numerals are given to the same configurations, and only characteristic portions will be described.

The rear seat video display device 2 of the present embodiment is characterized by having setting means 22. The setting unit 22 includes a touch panel and buttons, and is provided on the video display unit 15. The setting means 22 sets the message video display method of the video synthesized by the video control means 21, the time for displaying the message video, and the presence / absence of the message video. The setting means 22 is used for acceleration / deceleration.
When turning, whether or not the detection of seat belt wearing, door opening and closing, and window opening and closing is set to be valid is set by a button or the like provided around the display screen.

(Third embodiment)
A rear seat video display apparatus according to a third embodiment of the present invention will be described with reference to FIG. FIG. 6 is a block diagram of a rear seat video display apparatus according to the third embodiment of the present invention. Since the present embodiment is configured in substantially the same manner as the first and second embodiments described above, the same reference numerals are given to the same configurations, and only the characteristic portions will be described.

  The rear seat video display device 3 of the present embodiment is characterized by having navigation means 32. The navigation means 32 includes a host vehicle position detection unit that detects the position of the host vehicle using GPS (Global Positioning System), a gyroscope, and the like, and a storage unit that stores map data. Route information to the destination is created based on the map data.

  The navigation means 32 creates a route information to the destination by searching for the route to the set destination, and provides guidance information for guiding the vehicle based on this route information (such as next turn left or turn right several meters). Output at any time.

  The traveling state detection unit 31 detects in advance a left or right turn of the vehicle from the guidance information output from the navigation unit 32 and notifies the video control unit 21 of the detected turn.

  Based on the detection result, the video control unit 21 causes the display unit 15 to display a video in which the message video is superimposed on the content video for a certain period of time. In this way, the display means 15 can display the message video before the vehicle turns right or left.

  The traveling state detection unit 31 detects point information (weather, landscape, landmark) outside the vehicle registered by the navigation unit 32 and notifies the video control unit 21 of the detected point information. Based on the detection result, the video control unit 21 causes the display unit 15 to display a video in which the message video is superimposed on the content video for a certain period of time.

  FIG. 7A is a diagram illustrating an example of a screen at the time of vehicle position detection (destination information) of the vehicle image display apparatus according to the third embodiment of the present invention. According to the display as shown in FIG. 7 (a), it is possible to guide the outside information to the passengers in the rear seat by approaching the vicinity of the destination by the video displayed on the video display means 15 and the outside weather situation. This alerts the rear seat occupant and reduces the burden and danger to the occupant.

  FIG. 7B is a diagram illustrating a screen example at the time of vehicle position detection (landscape information) of the vehicle image display apparatus according to the third embodiment of the present invention. According to the display as shown in FIG. 7B, information outside the vehicle can be guided to the passenger in the rear seat through the scenery. This alerts the rear seat occupant and reduces the burden and danger to the occupant.

FIG.7 (c) is a figure showing the example of a screen at the time of vehicle position detection (landmark information) of the video display apparatus for vehicles in the 3rd Embodiment of this invention. According to the display as shown in FIG. 7C, information on the outside of the vehicle can be guided to the passenger in the rear seat using the landmark. This alerts the rear seat occupant and reduces the burden and danger to the occupant.
(Fourth embodiment)
A rear seat video display apparatus according to a fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is a block diagram of a rear seat video display apparatus according to the fourth embodiment of the present invention. Since the present embodiment is configured in substantially the same manner as the first to third embodiments described above, the same reference numerals are given to the same configurations, and only the characteristic portions will be described.

  The rear seat video display device 4 of the present embodiment is characterized by having camera means 42 for photographing the front in the traveling direction of the vehicle.

  The camera unit 42 shoots a scene in front of the vehicle and outputs shooting information to the traveling state detection unit 41. The traveling state detection unit 41 acquires information from the outside such as detection of a lane, a center line, a sidewalk, and the like from the video imaged by the camera unit 42. Thus, the traveling state detection means 41 detects left and right curves of the road ahead of the vehicle and detection of up and down hills.

  The traveling state detection unit 41 can detect vehicle information in advance by using the imaging information of the camera unit 42. For this reason, the video control means 21 can superimpose and display the message video on the content video of the display means 15 in advance. And it can call attention to the passenger | crew of a backseat and can reduce the burden and danger to a passenger | crew.

  As described above, the rear seat video display device according to the present invention allows the passenger in the rear seat to view and view the video in the vehicle, and simultaneously recognize and predict the current and next movements of the passenger car. This has the effect of reducing the burden, and is useful as an in-vehicle video display device for providing video to passengers in the rear seats of the vehicle.

1, 2, 3, 4 Rear seat image display device 11 Image generation means 12, 31, 41 Travel condition detection means 13 Vehicle condition detection means 14, 21 Image control means 15 Image display means

Claims (7)

Generating means for generating content video;
Display means for displaying the content video generated by the generating means;
A driving condition detecting means for detecting a driving condition of the vehicle;
Vehicle status detection means for detecting the vehicle status in the vehicle;
Video control means for controlling the display means,
The video control means generates a message video according to the vehicle running situation detected by the running situation detecting means and the running situation in the vehicle detected by the vehicle situation detecting means, and the message means displays the message video. A rear-seat video display device, wherein the video is superimposed and displayed on a content video.   2. The rear seat video display device according to claim 1, wherein the traveling state detection means detects at least one acceleration among a left-right direction, a vertical direction, and a front-rear direction of the vehicle.   3. The driving condition detecting means detects acceleration based on at least one signal among acceleration / deceleration of a speed sensor of a vehicle, acceleration of an acceleration sensor, angular velocity of an angular velocity sensor, and shaking frequency of a shaking sensor. The rear seat video display device described.   2. The rear seat video display device according to claim 1, wherein the traveling state detection unit detects at least one vehicle steering state among right and left turn and acceleration / deceleration of the vehicle.   5. The rear seat according to claim 4, wherein the traveling state detection means detects the vehicle steering state by at least one of a steering operation, an accelerator operation, a brake operation, a winker operation, and a hazard operation of a vehicle. Video display device. A navigation means for performing route guidance;
2. The rear seat image display device according to claim 1, wherein the traveling state detection unit detects a traveling state based on guidance information of the navigation unit. Camera means for capturing images outside the vehicle;
2. The rear seat video display device according to claim 1, wherein the traveling state detection unit detects the traveling state based on imaging information in the vicinity of the vehicle position or in front of the vehicle position of the camera unit.