JP5523749B2 - Rear seat display opening / closing control device and rear seat display opening / closing control method - Google Patents

Description

  The present invention relates to a rear-seat display opening / closing control device and a rear-seat display opening / closing control method, and more particularly to an opening / closing position of a rear-seat display attached to a ceiling surface in a vehicle compartment, with the display screen falling to the ceiling surface side. It is related with the technique controlled between the closed position which becomes invisible and the open position which opens to the rear seat side and becomes visible.

  In recent years, in a vehicle such as a minivan or an RV vehicle, a rear seat display is installed separately from the front seat display so that a passenger seated in the rear seat can enjoy TV programs and video software. The thing provided in the vehicle width direction center part in the surface is known. This is called a rear seat entertainment (RSE) system. Here, the rear seat display is configured to be openable and closable between a closed position in which the display screen falls to the ceiling surface side and becomes invisible and an open position in which the display screen opens to the rear seat side and becomes visible.

  As a technique for controlling the opening and closing of the rear seat display, there is known a technique for solving the problem that the user has to perform a switch operation when it is desired to use the rear seat display again after the door provided in the vehicle is opened and closed. (For example, refer to Patent Document 1). In the technique described in Patent Document 1, the open / close position of the rear seat display is controlled to be the open position based on the open / closed state of the door.

  In addition, a technique for preventing a user from colliding with a display device installed on the ceiling of a vehicle when the user unexpectedly stands up is known (see, for example, Patent Document 2). In the technique described in Patent Literature 2, when the display device is in the open state, the display device is automatically controlled from the open state to the closed state when the user approaches a predetermined distance from the display device. ing.

  In addition, although it is not a technique for controlling the opening and closing of the rear seat display, if the passenger seated in the rear seat is watching the image of the rear seat display provided on the ceiling, the rear seat display The occupant must manually adjust the position and orientation of the rear seat display each time depending on the problem that the field of view is obstructed and the safety check behind the vehicle cannot be performed sufficiently, and the occupant is seated. A technique for solving this problem is known (see, for example, Patent Document 3). In the technique described in Patent Document 3, the rear seat display is based on the current vehicle state (current position, speed, direction, brake state, etc. of the vehicle), the current seating state of the occupant, and the driver's rear view. The position and direction are changed to the optimum state.

  It also detects whether there are passengers in each seat in the vehicle cabin, and automatically adjusts the orientation of the monitor display mounted in the vehicle cabin to a direction that is easier for the passengers to see according to the detected result. A technique configured to do this is known (for example, see Patent Document 4).

JP 2008-1000062 A2 JP 2008-13063 A JP 2004-82835 A JP 2002-240641 A

  By the way, in the above-mentioned rear seat entertainment (RSE) system, when an occupant seated in the rear seat is watching a video on the rear seat display while the vehicle is traveling, the occupant is not wearing a seat belt. For example, when an accident occurs in the front and the occupant brakes suddenly, the occupant's body is thrown forward, causing the occupant's head to hit the rear seat display and causing injury. there were.

  The 2008 revision of the Road Traffic Law obliged passengers who were seated in the rear seats to wear seat belts. However, this does not lead to a complete solution to the above-mentioned problem for passengers who ignore these obligations. Further, in Japanese Patent Laid-Open No. 2002-212357, when a passenger does not wear a seat belt and the vehicle is in a running state, the passenger is prompted to wear the seat belt by voice or an image. Thus, although the technology for informing is disclosed, it does not lead to a complete solution of the above-described problem for a passenger who ignores the notification.

  There is also an idea that the technique described in Patent Document 2 is applied to the above-described problem. However, in this technique, the display device is switched from the open state to the closed state after detecting that the occupant has approached the predetermined distance from the display device. Therefore, when the driver's body suddenly brakes the vehicle and the body of the rear seat occupant approaches the display device at a rapid speed, the display device cannot be switched to the closed state in time, and the occupant's head May hit the rear seat display.

  The present invention has been made in order to solve such a problem, and when the occupant seated in the rear seat does not wear a seat belt while the vehicle is running, the driver suddenly brakes the vehicle. It is an object of the present invention to avoid the possibility that the head of the passenger in the rear seat hits the rear seat display.

In order to solve the above-described problems, in the present invention, the opening / closing position of the rear seat display attached to the ceiling surface in the vehicle compartment is controlled based on the wearing state of the seat belt of the occupant seated in the rear seat of the vehicle. I am doing so. Specifically, only when the on-state of the accessory switch is detected and the wearing state of the seat belt is detected, the open / close position of the rear seat display is opened to the rear seat side. To be in an open position where it can be visually recognized .

  According to the present invention configured as described above, since the rear seat display is not in the open position unless the rear seat occupant wears a seat belt in the traveling vehicle, the traveling vehicle suddenly Even if the occupant's body in the rear seat is thrown forward by decelerating, the possibility of hitting the rear seat display with the occupant's head open can be avoided.

It is a block diagram which shows the structural example of the display opening / closing control apparatus for rear seats by 1st Embodiment. It is a flowchart which shows the operation example of the display opening / closing control apparatus for backseats by 1st Embodiment. It is a block diagram which shows the structural example of the display opening / closing control apparatus for backseats by 2nd Embodiment. It is a flowchart which shows the operation example of the display opening / closing control apparatus for backseats by 2nd Embodiment.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings. FIG. 1 is a block diagram illustrating a configuration example of a rear seat display opening / closing control device 100 according to the first embodiment. The rear-seat display opening / closing control device 100 sets the opening / closing position of the rear-seat display 120 attached to the ceiling surface in the vehicle interior to the closed position where the display screen falls to the ceiling surface side and becomes invisible and to the rear seat side. Control is performed between the open position and the visible position. As shown in FIG. 1, the rear seat display opening / closing control apparatus 100 includes an accessory switch state detection unit 200, a seat belt wearing state detection unit 220, an opening / closing position determination unit 240, and an opening / closing control unit 260.

  The accessory switch state detection unit 200 detects the state of an accessory switch (not shown) of the vehicle. When the accessory switch is in the OFF position, the accessory switch state detection unit 200 detects the accessory switch off state and notifies the opening / closing control unit 260 to that effect. Further, when the accessory switch is in the ON position, the accessory switch state detection unit 200 detects the accessory switch on state and notifies the opening / closing control unit 260 to that effect.

  The seat belt wearing state detection unit 220 detects the wearing state of the occupant's seat belt in the rear seat. When detecting that the occupant in the rear seat is wearing the seat belt (wearing state), the seat belt wearing state detection unit 220 notifies the opening / closing control unit 260 to that effect. In addition, when the seat belt wearing state detection unit 220 detects a state in which the occupant in the rear seat does not wear the seat belt (a non-wearing state), the seat belt wearing state detection unit 220 notifies the opening / closing control unit 260 to that effect.

  The opening / closing position determination unit 240 determines whether the opening / closing position of the rear seat display 120 is an open position or a closed position. In the present embodiment, the opening / closing position determination unit 240 counts the number of pulses output from a pulse encoder (not shown) that outputs a different number of pulses according to the opening / closing position of the rear seat display 120, thereby It is determined whether the open / close position of the display 120 is an open position or a closed position. When the open / close position determination unit 240 determines that the open / close position of the rear seat display 120 is the open position, the open / close position determination unit 240 notifies the open / close control unit 260 to that effect. In addition, when the opening / closing position determination unit 240 determines that the opening / closing position of the rear seat display 120 is the closed position, the opening / closing position determination unit 240 notifies the opening / closing control unit 260 to that effect.

  The opening / closing control unit 260 outputs a command signal for rotating an electric motor (not shown) built in the rear seat display 120, thereby changing the opening / closing position of the rear seat display 120 to the open position and the closed position. Control between. For example, the opening / closing control unit 260 receives a notification that the ON state of the accessory switch has been detected from the accessory switch state detection unit 200, and also notifies that the occupant of the rear seat is wearing the seat belt. When received from the state detection unit 220, when the notification that the open / close position of the rear seat display 120 is the closed position is received from the open / close position determination unit 240, the open / close position of the rear seat display 120 is set to the open position. Outputs a command signal for rotating the electric motor.

  In addition, the opening / closing control unit 260 receives a notification from the accessory switch state detection unit 200 that the on-state of the accessory switch has been detected, and a notification that the occupant of the rear seat is not wearing the seat belt. When received from the state detection unit 220, when the notification that the opening / closing position of the rear seat display 120 is the open position is received from the opening / closing position determination unit 240, the opening / closing position of the rear seat display 120 is set to the closed position. Outputs a command signal for rotating the electric motor.

  In addition, when the opening / closing control unit 260 receives a notification that the accessory switch off state is detected from the accessory switch state detecting unit 200, the opening / closing control unit 260 notifies the opening / closing position that the opening / closing position of the rear seat display 120 is the open position. When received from the determination unit 240, it outputs a command signal for rotating the electric motor so that the opening / closing position of the rear seat display 120 is the closed position.

  Next, the operation of the rear seat display opening / closing control apparatus 100 according to the first embodiment will be described. FIG. 2 is a flowchart illustrating an operation example of the rear seat display opening / closing control apparatus 100 according to the first embodiment. The process of step S100 in FIG. 2 starts, for example, when the rear seat display opening / closing control device 100 is activated. It is assumed that the opening / closing position of the rear seat display 120 is a closed position at the stage where the process of step S100 is started.

  First, the open / close control unit 260 determines whether or not a notification indicating that the accessory switch ON state has been detected has been received from the accessory switch state detection unit 200 (step S100). If the open / close control unit 260 determines that the notification that the accessory switch ON state has been detected has not been received (NO in step S100), the process transitions to step S100.

  On the other hand, when opening / closing control unit 260 determines that the notification that the accessory switch ON state has been detected is received (YES in step S100), opening / closing control unit 260 allows the passenger in the rear seat to wear the seat belt. It is determined whether or not a notification to the effect is received from the seat belt wearing state detection unit 220 (step S120). If opening / closing control unit 260 determines that the passenger in the rear seat has received notification that the seat belt is being worn (YES in step S120), opening / closing control unit 260 opens / closes rear seat display 120. It is determined whether or not a notification that the position is the closed position has been received from the open / close position determination unit 240 (step S140).

  If the opening / closing control unit 260 determines that the notification that the opening / closing position of the rear seat display 120 is the closed position has not been received (NO in step S140), the process transitions to step S220. On the other hand, when the opening / closing control unit 260 determines that the notification that the opening / closing position of the rear seat display 120 is the closed position has been received (YES in step S140), the opening / closing control unit 260 Control is performed so that the open / close position becomes the open position (step S160). Thereafter, the process proceeds to step S220.

  In addition, the opening / closing control unit 260 determines that the occupant in the rear seat has not received a notification that the occupant is wearing a seat belt (that is, a notification that the occupant is not wearing a seat belt). In this case (NO in step S120), the opening / closing control unit 260 determines whether or not a notification that the opening / closing position of the rear seat display 120 is the open position has been received from the opening / closing position determination unit 240 (step S180). If opening / closing control section 260 determines that the notification that the opening / closing position of rear seat display 120 is the open position has not been received (NO in step S180), the process transitions to step S220.

  On the other hand, when the opening / closing control unit 260 determines that the notification that the opening / closing position of the rear seat display 120 is the open position has been received (YES in step S180), the opening / closing control unit 260 Control is performed so that the open / close position becomes the closed position (step S200). Thereafter, the process proceeds to step S220.

  In step S <b> 220, the opening / closing control unit 260 determines whether a notification indicating that the accessory switch off state has been detected has been received from the accessory switch state detection unit 200. If the opening / closing control unit 260 determines that the notification that the accessory switch OFF state has been detected has not been received (NO in step S220), the process transitions to step S120. On the other hand, when opening / closing control unit 260 determines that the notification that the accessory switch OFF state has been detected is received (YES in step S220), opening / closing control unit 260 determines that the opening / closing position of rear seat display 120 is the open position. It is determined whether a notification to the effect is received from the open / close position determination unit 240 (step S240).

  If the opening / closing control unit 260 determines that the notification that the opening / closing position of the rear seat display 120 is the open position has not been received (NO in step S240), the rear seat display opening / closing control device 100 is The process in 2 is terminated. On the other hand, when the opening / closing control unit 260 determines that the notification that the opening / closing position of the rear seat display 120 is the open position has been received (YES in step S240), the opening / closing control unit 260 Control is performed so that the open / close position becomes the closed position (step S260). After the process in step S260 is completed, the rear seat display opening / closing control apparatus 100 ends the process in FIG.

  As described above in detail, in the first embodiment, the opening / closing position of the rear seat display 120 is detected only when the ON state of the accessory switch is detected and the wearing state of the occupant's seat belt in the rear seat is detected. Is controlled to be in the open position. According to the first embodiment configured as described above, even when the accessory switch is turned on, the rear seat display 120 is opened when the passenger in the rear seat is not wearing the seat belt. Therefore, when the driver suddenly brakes the vehicle, the passenger's head may hit the rear seat display 120 even if the passenger's body in the rear seat may be thrown forward. It can be avoided.

  Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 3 is a block diagram illustrating a configuration example of the rear seat display opening / closing control device 100 ′ according to the second embodiment. The rear-seat display opening / closing control device 100 ′ according to the second embodiment includes an opening / closing control unit 260 ′ instead of the opening / closing control unit 260 of FIG. The rear seat display opening / closing control device 100 ′ further includes a traveling state determination unit 300. 3 that have the same reference numerals as those shown in FIG. 1 have the same functions, redundant description thereof will be omitted here.

  The traveling state determination unit 300 determines the current traveling state of the vehicle based on vehicle speed information obtained from a vehicle speed sensor (not shown). In the present embodiment, the traveling state determination unit 300 determines that the traveling state of the vehicle is traveling when the vehicle speed indicated by the speed information obtained from the speed sensor is not 0 [km / h]. When the traveling state determination unit 300 determines that the traveling state of the vehicle is traveling, the traveling state determination unit 300 notifies the opening / closing control unit 260 'to that effect. In addition, when the traveling state determination unit 300 does not determine that the traveling state of the vehicle is traveling, the traveling state determination unit 300 notifies the opening / closing control unit 260 ′ to that effect.

  Note that the traveling state determination unit 300 determines that the traveling state of the vehicle is traveling because the head of the passenger in the rear seat hits the rear seat display 120 when the driver suddenly brakes the vehicle. It is preferable to limit to the case where the possibility that the vehicle is likely to become high (for example, when the vehicle speed is 20 [km / h] or more). Moreover, you may make it the driving state determination part 300 determine the present driving state of a vehicle based on the positional information obtained from the GPS sensor (not shown) of a vehicle. In this case, the traveling state determination unit 300 determines that the traveling state of the vehicle is traveling when the position of the vehicle indicated by the position information obtained from the GPS sensor has changed by a predetermined distance or more.

  The opening / closing control unit 260 ′ outputs a command signal for rotating an electric motor (not shown) built in the rear seat display 120, thereby setting the opening / closing position of the rear seat display 120 to the open position and the closed position. And control between. For example, the opening / closing control unit 260 ′ receives a notification that the ON state of the accessory switch has been detected from the accessory switch state detection unit 200, and also notifies that the passenger in the rear seat is wearing the seat belt. When the notification is received from the wearing state detection unit 220, when the notification that the opening / closing position of the rear seat display 120 is the closed position is received from the opening / closing position determination unit 240, the opening / closing position of the rear seat display 120 becomes the open position. A command signal for rotating the electric motor is output as described above.

  In addition, the opening / closing control unit 260 ′ receives a notification from the accessory switch state detection unit 200 that the on-state of the accessory switch has been detected, and a notification that the passenger in the rear seat does not wear the seat belt. When received from the wearing state detection unit 220, it is determined whether or not a notification indicating that the traveling state of the vehicle is traveling is received from the traveling state determination unit 300. If it is determined that the notification that the driving state of the vehicle has been determined to have been received is received from the opening / closing position determination unit 240 that the opening / closing position of the rear seat display 120 is the open position. The opening / closing control unit 260 ′ outputs a command signal for rotating the electric motor so that the opening / closing position of the rear seat display 120 becomes the closed position.

  In addition, when the opening / closing control unit 260 receives a notification that the accessory switch off state is detected from the accessory switch state detecting unit 200, the opening / closing control unit 260 notifies the opening / closing position that the opening / closing position of the rear seat display 120 is the open position. When received from the determination unit 240, it outputs a command signal for rotating the electric motor so that the opening / closing position of the rear seat display 120 is the closed position.

  Next, the operation of the rear seat display opening / closing control apparatus 100 ′ of the second embodiment will be described. FIG. 4 is a flowchart illustrating an operation example of the rear-seat display opening / closing control device 100 ′ according to the second embodiment. The process of step S300 in FIG. 4 starts, for example, when the rear seat display opening / closing control device 100 ′ is activated. It is assumed that the opening / closing position of the rear seat display 120 is the closed position at the stage where the process of step S300 is started.

  First, the opening / closing control unit 260 ′ determines whether or not a notification indicating that the accessory switch ON state has been detected has been received from the accessory switch state detection unit 200 (step S300). If the opening / closing control unit 260 ′ determines that the notification that the accessory switch ON state has been detected has not been received (NO in step S300), the process transitions to step S300.

  On the other hand, when the opening / closing control unit 260 ′ determines that the notification indicating that the accessory switch ON state has been detected (YES in step S300), the opening / closing control unit 260 ′ causes the passenger in the rear seat to wear the seat belt. It is determined whether or not a notification to the effect is received from the seat belt wearing state detection unit 220 (step S320). If the opening / closing control unit 260 ′ determines that a notification that the passenger in the rear seat is wearing the seat belt has been received (YES in step S320), the opening / closing control unit 260 ′ displays the display 120 for the rear seat. It is determined whether or not a notification to the effect that the open / close position is the closed position has been received from the open / close position determination unit 240 (step S340).

  If the opening / closing control unit 260 ′ determines that the notification that the opening / closing position of the rear seat display 120 is the closed position has not been received (NO in step S340), the process proceeds to step S440. On the other hand, when the opening / closing control unit 260 ′ determines that the notification that the opening / closing position of the rear seat display 120 is the closed position has been received (YES in step S340), the opening / closing control unit 260 ′ Control is performed so that the open / close position of 120 becomes the open position (step S360). Thereafter, the process proceeds to step S440.

  In addition, it is determined by the opening / closing control unit 260 ′ that the passenger in the rear seat has not been notified that the seat belt is being worn (that is, the passenger has been notified that the seat belt is being worn). If it is determined (NO in step S320), opening / closing control unit 260 ′ determines whether or not notification from driving state determination unit 300 that the driving state of the vehicle is determined to be driving has been received (step S380). . If the opening / closing control unit 260 ′ determines that the notification indicating that the traveling state of the vehicle is traveling is not received (NO in step S380), the process transitions to step S440.

  On the other hand, when the opening / closing control unit 260 ′ determines that the notification that it is determined that the traveling state of the vehicle is traveling (YES in step S380), the opening / closing control unit 260 ′ displays the rear seat display 120. It is determined whether or not a notification that the open / close position is the open position is received from the open / close position determination unit 240 (step S400). If the opening / closing control unit 260 ′ determines that the notification that the opening / closing position of the rear seat display 120 is the open position has not been received (NO in step S400), the process proceeds to step S440.

  On the other hand, when the opening / closing control unit 260 ′ determines that the notification that the opening / closing position of the rear seat display 120 is the open position has been received (YES in step S400), the opening / closing control unit 260 ′ Control is performed so that the opening / closing position of 120 becomes the closed position (step S420). Thereafter, the process proceeds to step S440.

  In step S440, the opening / closing control unit 260 ′ determines whether or not the accessory switch state detection unit 200 has received a notification that the accessory switch off state has been detected. If the opening / closing control unit 260 ′ determines that the notification that the accessory switch OFF state has been detected has not been received (NO in step S440), the process transitions to step S320. On the other hand, when the opening / closing control unit 260 ′ determines that the notification that the accessory switch OFF state has been detected is received (YES in step S440), the opening / closing control unit 260 ′ determines that the opening / closing position of the rear seat display 120 is It is determined whether or not a notification indicating the open position has been received from the open / close position determination unit 240 (step S460).

  If the opening / closing control unit 260 ′ determines that the notification that the opening / closing position of the rear seat display 120 is the open position has not been received (NO in step S460), the rear seat display opening / closing control device 100 ′. Ends the process in FIG. On the other hand, when the opening / closing control unit 260 ′ determines that the notification that the opening / closing position of the rear seat display 120 is the open position has been received (YES in step S460), the opening / closing control unit 260 ′ Control is performed so that the opening / closing position of 120 becomes the closed position (step S480). After the process in step S480 is completed, the rear seat display opening / closing control device 100 ′ ends the process in FIG.

  As described above in detail, in the second embodiment, when the occupant's seat belt is not worn in the rear seat and it is determined that the vehicle is traveling, the opening / closing position of the rear seat display 120 is determined. Is controlled to be in the closed position. According to the second embodiment configured as described above, when the occupant of the rear seat does not wear the seat belt, the opening / closing position of the rear seat display 120 is set to the closed position when the vehicle is traveling. Therefore, when the driver suddenly brakes the vehicle, the occupant's head may hit the rear seat display 120 even if the occupant's body in the rear seat may be thrown forward. Sex can be avoided.

  Further, according to the second embodiment, even when the passenger in the rear seat is not wearing the seat belt, the opening / closing position of the rear seat display 120 is the closed position unless the vehicle is running. Not controlled. Therefore, in a situation where the body of the passenger in the rear seat is not likely to be thrown forward (a situation where the vehicle is not traveling), the opening / closing position of the rear seat display 120 is not closed, and the passenger in the rear seat It can be avoided that viewing the video displayed on the display screen of the rear seat display 120 is unnecessarily limited.

  In the first and second embodiments, the example in which the open / close position of the rear seat display 120 is automatically controlled between the closed position and the open position has been described. However, the operation unit (not shown) is controlled. You may make it control via user operation. For example, a user operation (for example, remote control operation) for opening the rear seat display 120 is accepted only when the on state of the accessory switch is detected and the seat belt of the rear seat occupant is detected. You may control as follows.

  In addition, each of the first and second embodiments described above is merely an example of a specific example for carrying out the present invention, and the technical scope of the present invention should not be interpreted in a limited manner. It will not be. In other words, the present invention can be implemented in various forms without departing from the spirit or main features thereof.

100, 100 'Rear-seat display opening / closing control device 120 Rear-seat display 200 Accessory switch state detection unit 220 Seat belt wearing state detection unit 260, 260' Opening / closing control unit 300 Running state determination unit

Claims (2)

An accessory switch state detection unit for detecting the state of the accessory switch of the vehicle;
A seat belt wearing state detection unit for detecting the wearing state of the occupant's seat belt in the rear seat;
A rear seat attached to a ceiling surface in a vehicle compartment when the accessory switch state detecting unit detects the on state of the accessory switch and the seat belt wearing state detecting unit detects the wearing state of the seat belt. A rear seat display comprising: an opening / closing control unit that controls an open / close position of the rear display so that the display screen of the rear seat display is opened to the rear seat side and becomes visible Open / close control device. A first step of detecting a state of an accessory switch of the vehicle;
A second step of detecting the wearing state of the occupant's seat belt in the rear seat;
When the on state of the accessory switch is detected by the first step and the wearing state of the seat belt is detected by the second step, the rear seat display attached to the ceiling surface in the vehicle compartment And a third step of controlling the opening / closing position so that the display screen of the display for the rear seat opens to the rear seat side and becomes visible. .

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