JP2011020538A - Seatback display angle control device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a seatback display angle control device adjusting the display to an appropriate angle without a user operation. <P>SOLUTION: A control section 19 determines an adjustment angle corresponding to a slide position A detected by a front seat position detection section 11, a tilt angle B detected by a front seat tilt angle detection section 12, a slide position C detected by a rear seat position detection section 13, a tilt angle D detected by a rear seat tilt angle detection section 14, a slide position E detected by a headrest position detection section 15, and a tilt angle F detected by a headrest angle detection section 16 by referring to table information stored in a storage section 17. The control section 19 causes a display angle adjustment mechanism 20 to adjust the angle of the display according to the adjustment angle. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a seat back display angle control device that adjusts an angle of a display attached to a front seat back of an automobile to an angle at which a rear seat passenger can easily view an image.

  The conventional seat back display angle control device detects the tilt angle when the display mounting member (for example, the backrest of the front seat, the headrest, etc.) is tilted, and the tilt angle is set by the user's operation input. When the angle is different from the angle, the display is automatically adjusted to the initial setting angle (see, for example, Patent Document 1).

Japanese Patent Laying-Open No. 2007-253807 (FIG. 2)

  However, in the conventional seat back display angle control device, only the inclination angle of the front seat is taken into consideration, so that it is difficult for the passenger of the rear seat to see the image depending on the seat position of the front seat or the rear seat. There was a problem. Furthermore, in the conventional seat back display angle control device, no matter how the position of the front seat or the rear seat, the inclination angle, etc. change, it is always adjusted to the initial setting angle. Depending on the position and inclination angle of the seat, there was a problem that it was difficult for the passenger in the rear seat to see the image. In such a case, the user still has to manually adjust the angle of the display.

  The present invention has been made to solve the conventional problems, and an object thereof is to provide a seat back display angle control device capable of adjusting a display to an appropriate angle without a user's operation.

  In the seat back display angle control device of the present invention, the control unit controls the adjustment angle of the display angle adjustment mechanism based on the detection results of the front seat position detection unit and the front seat inclination angle detection unit.

  According to the present invention, even when the seat position and the seat inclination angle of the front seat are changed, the seat back display capable of setting the display angle to an angle at which the rear seat passenger can easily view the image without any user operation. An angle control device can be provided.

The block diagram of the seat back display angle control apparatus in the 1st Embodiment of this invention The flowchart figure explaining operation | movement of the seat back display angle control apparatus in the 1st Embodiment of this invention. The block diagram which shows the structure of the seat back display angle control apparatus in the 2nd Embodiment of this invention. The flowchart figure explaining operation | movement of the seat back display angle control apparatus in the 2nd Embodiment of this invention.

Embodiments of the present invention will be described.
(First embodiment)
A seat back display angle control apparatus according to a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram of a seat back display angle control device which is a main part in the first embodiment of the invention.

  As shown in FIG. 1, the seat back display angle control device 1 includes a front seat position detection unit 11, a front seat inclination angle detection unit 12, a rear seat position detection unit 13, and a rear seat inclination angle detection. Unit 14, headrest position detection unit 15, headrest inclination angle detection unit 16, storage unit 17, setting operation unit 18, control unit 19, and display angle adjustment mechanism 20.

  The front seat position detection unit 11 is configured by a sensor that detects a slide position A that indicates a distance moved back and forth from an initial position set in advance for the front seat. In the slide position A of the present embodiment, the position when sliding forward from a preset initial position is defined as a negative value, and the position when sliding backward is defined as a positive value. The front seat position detection unit 11 is connected to the control unit 19. The front seat position detection unit 11 outputs data of the detected slide position A of the front seat to the control unit 19.

  The front seat inclination angle detection unit 12 includes a sensor that detects an inclination angle B when the front seat is tilted backward from the initial position before the backrest of the front seat is tilted. The front seat inclination angle detection unit 12 is connected to the control unit 19. The front seat inclination angle detector 12 outputs data of the detected inclination angle B of the backrest of the front seat to the controller 19.

  The rear seat position detection unit 13 is configured by a sensor that detects a slide position C that indicates a movement distance of sliding backward and forward from an initial position set in advance for the rear seat. In the slide position C of the present embodiment, the position when sliding forward from a preset initial position is defined as a negative value, and the position when sliding backward is defined as a positive value. The rear seat position detection unit 13 is connected to the control unit 19. The rear seat position detection unit 13 outputs data of the detected slide position C of the rear seat to the control unit 19.

  The rear seat inclination angle detector 14 includes a sensor that detects an inclination angle D when the rear seat is tilted backward from the initial position before the backrest of the seat is tilted. The rear seat inclination angle detection unit 14 is connected to the control unit 19. The rear seat inclination angle detector 14 outputs data of the detected inclination angle D of the backrest of the rear seat to the controller 19.

  The headrest position detection unit 15 is configured by a sensor that detects a slide position E that indicates a moving distance of sliding the headrest of the front seat back and forth from a preset initial position. In the slide position E of the present embodiment, the position when sliding forward from a preset initial position is defined as a negative value, and the position when sliding backward is defined as a positive value. The headrest position detection unit 15 is connected to the control unit 19. The headrest position detection unit 15 outputs data of the detected slide position E of the headrest headrest of the front seat to the control unit 19.

  The headrest inclination angle detection unit 16 includes a sensor that detects an inclination angle F when the headrest is tilted back and forth from the initial position before the headrest is tilted. In the tilt angle F of the present embodiment, the tilt angle when tilted forward from a preset initial position is defined as a negative value, and the tilt angle when tilted backward is defined as a positive value. The rear seat inclination angle detection unit 14 is connected to the control unit 19. The rear seat inclination angle detector 14 outputs data of the detected inclination angle D of the backrest of the rear seat to the controller 19.

The storage unit 17 includes an HDD (Hard Disk Drive) and a DVD (Digital
(Versatile Disk) or a non-volatile memory. The storage unit 17 includes a front seat position detection unit 11, a front seat inclination angle detection unit 12, a rear seat position detection unit 13, a rear seat inclination angle detection unit 14, and a headrest position detection unit 15. A table in which the correspondence between the headrest inclination angle detection unit 16 and the display angle adjustment is defined in advance is stored. The storage unit 17 is connected to the control unit 19. The storage unit 17 outputs this table information to the control unit 19 in accordance with an instruction from the control unit 19. The storage unit 17 may store a plurality of tables for each user and each vehicle type.

  The setting operation unit 18 includes a touch panel and operation buttons. The setting operation unit 18 is connected to the control unit 19. The setting operation unit 18 outputs personal information such as the user's caution to the control unit 19 in accordance with the user's operation input.

  The control unit 19 includes a CPU and a RAM. The control unit 19 includes a front seat position detection unit 11, a front seat inclination angle detection unit 12, a rear seat position detection unit 13, a rear seat inclination angle detection unit 14, a headrest position detection unit 15, The headrest inclination angle detection unit 16, the storage unit 17, the setting operation unit 18, and the display angle adjustment mechanism 20 are connected. The control unit 19 determines which table information to use from the storage unit 17 in accordance with the user's personal information input by the setting operation unit 18. And the control part 19 refers to this table information, the front seat seat position detection part 11, the front seat seat inclination angle detection part 12, the rear seat seat position detection part 13, and the rear seat seat inclination angle detection part 14, the display adjustment angle is determined from information input from the headrest position detection unit 15 and the headrest inclination angle detection unit 16.

  The display angle adjustment mechanism 20 is composed of a drive motor. The display angle adjustment mechanism 20 is connected to the control unit 19. The display angle adjustment mechanism 20 adjusts the inclination of the display mounted on the rear part of the front seat in accordance with the display adjustment angle information input from the control unit 19. This inclination means an inclination with the same axis as the central axis when the backrest of the front seat is inclined as the central axis.

  Next, the operation of the seat back display angle control device will be described.

  FIG. 2 is a flowchart for explaining the operation of the seat back display angle control device, which is the main part of the first embodiment of the invention.

  First, as shown in step S11, the front seat position detector 11 detects the slide position A, the front seat inclination angle detector 12 detects the inclination angle B, and the rear seat position detector 13 detects the slide position. C is detected, the rear seat inclination angle detector 14 detects the inclination angle B, the headrest position detector 15 detects the slide position E, and the headrest inclination angle detector 16 detects the inclination angle F.

  Next, as shown in step S <b> 12, the control unit 19 refers to the table information stored in the storage unit 17.

  Next, as shown in step S13, the control unit 19 reads information on the adjustment angles associated with the slide positions A, C, and E and the inclination angles B, D, and F from the table information and adjusts the display. Determine the angle.

  Then, as shown in step S <b> 14, the control unit 19 outputs information on the determined adjustment angle to the display angle adjustment mechanism 20. Then, the display angle adjustment mechanism 20 adjusts the display angle in accordance with the input adjustment angle information.

  As described above, based on the detection information of the seat position and the seat inclination angle of the front and rear seats, the position of the headrest of the front seat and the inclination angle, the control unit 19 refers to the table information associated with the detection information and displays it. By determining the adjustment angle and controlling the display angle adjustment mechanism 20, the rear seat can be operated without the user's operation even when the seat position and seat inclination angle of the front and rear seats and the position and inclination angle of the headrest of the front seat are changed. The angle of the display can be adjusted to make it easier for the passengers to see the video. Further, the angle of the display can be adjusted so that it is easy to view the video even for passengers (for example, adults and children) having different viewpoint positions when seated on the rear seat.

  In the present embodiment, an example in which a plurality of table information is stored in the storage unit 17 and the user can select the table information by the setting operation unit 18 has been described, but the table information stored in the storage unit 17 is one. One may be sufficient. And the seat back display angle control apparatus 1 of this embodiment does not need to have the setting operation part 18. FIG. In this case, it is possible to make the angle of the display easy for the passenger in the rear seat to see the image without having to perform an operation for selecting the table information stored in the storage unit 17.

  In the present embodiment, the table information stored in the storage unit 17 is used to improve the processing speed of the control unit 19, but the slide positions A, C, E, the inclination angle B, The display adjustment angle may be calculated by substituting the information of D and F. In this case, the adjustment angle can be made more accurate.

Further, in the present embodiment, the seat back display angle control device 1 serves as a detection unit for detecting a parameter for determining the display control angle as a front seat position detection unit 11 and a front seat inclination angle detection unit. 12, the rear seat position detection unit 13, the rear seat inclination angle detection unit 14, the headrest position detection unit 15, and the headrest angle detection unit 16 have been described. It is not necessary to have this detection part. For example, when the seat back display angle control device 1 has only the front seat position detection unit 11 and the front seat inclination angle detection unit 12, or the front seat position detection unit 11, the front seat inclination angle detection unit 12, When only the rear seat position detector 13 and the rear seat inclination angle detector 14 are provided, or the front seat position detector 11, the front seat inclination angle detector 12, the headrest position detector 15, and the headrest angle detector 16 It may be a case having only.
(Second Embodiment)
Next, a seat back display angle control device according to a second embodiment of the present invention will be described with reference to the drawings. In the second embodiment, detailed description of the same configuration as that of the first embodiment is omitted.

FIG. 3 is a block diagram showing a configuration of a seat back display angle control apparatus which is a main part in the second embodiment of the invention. The seat back display angle control device 2 in FIG. 3 includes a parking brake signal detection unit 21 and a seat belt wearing detection unit in addition to the configuration of the seat back display angle control device 1 shown in FIG. 1 of the first embodiment described above. 22,
A display unit 23 and a display power source 24 are provided.

  The parking brake signal detection unit 21 includes a sensor, and detects a parking brake signal in conjunction with a side brake provided on the front seat side. The parking brake signal detection unit 21 is connected to the control unit 19 and outputs the detected parking brake signal to the control unit 19.

  The seat belt wearing detection unit 22 is configured by a sensor and detects whether or not the rear seat belt of the user on the rear seat side is worn. The seat belt wearing detection unit 22 is connected to the control unit 19, and outputs information on the presence / absence of wearing of the rear seat belt of the rear seat user detected by the control unit 19.

  The display 23 is composed of a liquid crystal display, and displays video and various information. The display 23 is connected to the control unit 19 and the display angle adjustment mechanism 20. The display 23 switches display contents in accordance with a command from the control unit 19, and the angle is adjusted by the display angle adjustment mechanism 20.

  The display power supply 24 is composed of a power supply such as a battery. The display power supply 24 is connected to the control unit 19 and the display 23, and supplies power to the display 23 according to a command from the control unit 19.

  Next, the operation of the seat back display angle control device will be described.

  FIG. 4 is a flowchart for explaining the operation of the seat back display angle control device, which is the main part of the second embodiment of the invention. First, as shown in step S21, the display power supply 24 is turned ON.

  Next, as shown in step S22, the display power supply 24 is turned on.

  Next, as shown in step S <b> 23, the control unit 19 determines whether the parking brake is operating based on the parking brake signal input from the parking brake detection unit 21.

  In the case of NO in step S23, in other words, when the control unit 19 determines that the parking brake is not operated, as shown in step S24, the detection of the rear seat belt usage detected from the seat belt wearing detection unit 22 is performed. It is determined whether or not the rear seat belt is worn based on the signal.

  Next, in the case of NO in step S24, in other words, when it is determined that the rear seat belt is not worn, the control unit 19 indicates that the seat belt is not worn on the display 23 as shown in step S25. A warning is displayed.

  Next, as shown in step S26, after a predetermined time has elapsed (for example, after several seconds), the display power supply 24 is turned off.

  And as shown to step S27, the control part 19 makes the display angle adjustment mechanism 20 return the angle of the display 23 to an initial state.

In addition, in the case of YES in step S23 or in the case of YES in step S24, in other words, when the control unit 19 determines that the parking brake is operating or determines that the rear seat belt is worn, As shown in step S28, the display 23 is based on the slide positions A, C, E, the inclination angles B, D, F and the table information selected from the storage unit 17.
The adjustment angle is determined, and the display angle adjustment mechanism 20 adjusts the display 23 at this adjustment angle.

  As described above, according to the seat back display angle control device 2 in the second embodiment of the present invention, the control unit 19 performs display based on the rear seat belt use detection signal detected by the seat belt detection unit 22. Since the angle adjustment mechanism 20 and the display power supply 24 are controlled, the safety of the rear seat occupant can be improved. Specifically, when it is determined that the rear seat occupant is not wearing a seat belt while the vehicle is traveling, the control unit 19 displays on the display 23 that the seat belt is not worn and wears the seat belt. Urges the rear seat occupant to improve the safety of the rear seat occupant. In addition, the control unit 19 turns off the display power supply 24 after a predetermined time and causes the display angle adjustment mechanism 20 to return the display 23 to the initial angle, so that the display 23 does not protrude from the rear part of the front seat, and the rear part It is possible to prevent the seat occupant from colliding with the display 23 protruding by sudden braking while the seat belt is not worn.

  As described above, the seat back display angle control device according to the present invention is useful as a seat back display angle control device or the like that adjusts a display attached to the rear part of the front seat of an automobile so that the rear seat occupant can easily see.

DESCRIPTION OF SYMBOLS 1 Seat back display angle control apparatus 11 Front seat seat position detection part 12 Front seat seat inclination angle detection part 19 Control part 20 Display angle adjustment mechanism

Claims (6)

A front seat position detector that detects the seat position of the front seat;
A front seat inclination angle detector for detecting a front seat inclination angle;
A display angle adjustment mechanism for adjusting the angle of the display provided at the rear of the front seat;
A control unit that automatically controls the adjustment angle of the display angle adjustment mechanism,
The control unit controls the adjustment angle of the display angle adjustment mechanism based on detection results of the front seat position detection unit and the front seat inclination angle detection unit. A rear seat position detection unit for detecting the seat position of the rear seat;
A rear seat inclination angle detection unit for detecting a rear seat inclination angle;
2. The seat according to claim 1, wherein the control unit further controls an adjustment angle of the display angle adjustment mechanism based on detection results of the rear seat position detection unit and the rear seat inclination angle detection unit. Back display angle control device. A headrest position detector for detecting the position of the headrest of the front seat;
A headrest angle detection unit that detects an inclination angle of the headrest of the front seat,
The seat back display angle control device according to claim 2, wherein the control unit further controls an adjustment angle of the display angle adjustment mechanism based on detection results of the headrest position detection unit and the headrest angle detection unit. . It further comprises a seat belt wearing detection unit for detecting whether or not the rear seat belt is worn,
The seat back display angle control device according to claim 1, wherein the control unit controls the display angle adjustment mechanism based on a detection result of the seat belt wearing detection unit. A parking brake detecting unit for detecting an operating state of the parking brake;
The seat back display angle control device according to claim 4, wherein the control unit further controls the display angle adjustment mechanism based on a detection result of the parking brake detection unit. When the parking brake detection unit detects the release of the parking brake, and the seat belt wearing detection unit detects non-wearing of the rear seat belt,
6. The seat back display angle control device according to claim 5, wherein the control unit cuts off power supply to a display whose angle is adjusted by the display angle adjustment mechanism after a predetermined period of time has elapsed.