JP2001354074A - On-vehicle display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem of a conventional on-vehicle display device provided at the back of a headrest which causes concern about the safety of an occupant at a rear seat because a display member is always exposed. SOLUTION: A display member 11 is provided on a back 3a of the front-seat headrest 3. The display member 11 in no-use is covered with a cover member 12. Covering the surface of the cover member 12 with a cushion material produces an increase in safety. Although the display member 11 is exposed when the cover member 12 is rotationally moved upward, the existence of a projection in the backward direction can be eliminated by sliding the cover member 12 further frontward.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an in-vehicle display device having a display screen such as a liquid crystal display, and more particularly to an in-vehicle display device which is installed at a position easily viewable from a rear seat and is safe in an emergency.

[0002]

2. Description of the Related Art Recently, an in-vehicle display device installed in an automobile has been used. The in-vehicle display device has a flat display such as a color liquid crystal display, and can display a TV image, a video image, a game image, a navigation image, and the like.

[0003] This type of in-vehicle display device is often installed in front of a front seat of an automobile or on a ceiling in a vehicle compartment.
When installed on the ceiling, it is common to use a posture that follows the ceiling surface when not in use, rotate downward when in use, and view the screen from the rear seat.

[0004] Recently, an in-vehicle display device provided on the rear side of a headrest at a front seat in a vehicle compartment has also been proposed.

[0005]

However, when the in-vehicle display device is installed in front of the front seat as described above, there is a possibility that the front view of the vehicle may be obstructed. Further, in the case of the vehicle mounted on the ceiling, it is necessary to make the vehicle-mounted display device installable as a structure of the ceiling portion of the vehicle, and it is necessary to modify the vehicle body itself in order to mount the vehicle-mounted display device. In addition, it is necessary to wire a power supply line and an antenna line on the ceiling, and wiring inside the vehicle is complicated.

[0006] In addition, the screen installed on the back of the headrest has an advantage that the screen can be easily viewed from the rear seat. However, since the display screen is always exposed to the back of the headrest, there is a problem in safety in an emergency. Was.

The present invention has been made to solve the above-mentioned conventional problems, and has an object to provide an in-vehicle display device in which a display member is provided on the back surface of a headrest and which is excellent in safety in an emergency. I have.

[0008]

According to the present invention, there is provided a vehicle-mounted display device installed on a headrest above a seat in a vehicle, comprising a display member installed at a position behind the headrest and visible from a rear seat. A lid member that operates between a closed position that covers the display member and an open position where the display member is exposed, wherein the lid member has a cushion material on a surface when the display member is covered. It is characterized by having.

In the above-described display device for a vehicle, the display member is provided on the back of the headrest in the front seat, so that the occupant in the rear seat can easily see the screen of the display member. In addition, when not in use, the display member is covered with a cover member, and the surface of the cover member is covered with a cushion material, so that safety in an emergency can be secured.

The lid member has an upper pivot point and pivots upward to reach the open position. A slide mechanism is provided between the pivot point and the lid member. Preferably, the lid member in the open position is slidable forward.

In the above structure, when the display member is exposed, the lid member turned upward moves forward, so that the lid member does not protrude rearward, and the safety for the occupant of the rear seat is reduced. Can be enhanced.

Further, when the lid member is slidable forward when acceleration is applied to the front of the vehicle when the lid member is in the open position, the display member is kept rotating upward. Even if an impact is applied at this time, there is no projecting object that projects rearward from the headrest, so that the safety of the occupant in the rear seat can be improved.

The lid member has an upper pivot point and pivots upward to reach the open position. A lock means for locking the lid member in the open position, Acceleration detection means for detecting acceleration to release the lock by the lock means, and when the lock by the lock means is released, an urging force for rotating to the closed position acts on the lid member. preferable.

In this case, the urging force acts on the lid member by its own weight, or acts on the spring member for elastically pressing the lid member toward the closed position.

In the above means, when the lid member is rotated upward and the screen of the display member is exposed, when the impact from the front is given, the lid member is rotated to the closed position and the display member is moved. Cover, thereby increasing the impact safety of the occupant in the rear seat.

[0016]

FIG. 1 is a side view showing a front seat of an automobile provided with a vehicle-mounted display device of the present invention, and FIG. 2 is a side view of a vehicle-mounted display device of a first embodiment of the present invention. FIG. 3 is a side view of a vehicle-mounted display device according to a second embodiment of the present invention, and FIG. 4 is a cross-sectional view taken along line IV-IV of FIG.

FIG. 1 shows a front seat (passenger seat) 1 of an automobile from the side. The front seat 1 has a seat 2, a back seat 4, and a headrest 3 provided on the back seat 4. The surfaces of the seat 2, the back seat 4, and the headrest 3 are made of a cushion material (impact absorbing material).

On the back of the headrest 3, a vehicle-mounted display device 10 of the present invention is provided. As shown in FIG.
In the in-vehicle display device 10, a display member 11 is embedded at the back of the headrest 3, and a display screen thereof appears on a back surface 3 a of the headrest 3.

The display member 11 is a flat display such as a color liquid crystal display, and can display a TV image, a video image, a game image, a navigation image, and the like.

A cover member 12 for covering the display member 11 is provided. The cover member 12 includes a rotation support member 13.
The rotation support member 13 is rotatably supported by a support shaft 14 provided inside the upper end of the headrest 3.

A reversing spring (torsion spring) 16 is mounted between the rotation support member 13 and the headrest 3, and when the lid member 12 is at the closed position (i) covering the display member 11, The cover member 12 is urged in the closing position (clockwise) by the reversing spring 16 in the closing position (clockwise) to be stable, and the cover member 12 is turned upward to reach the open position (ii) where the display member 11 is exposed. At this time, the biasing force in the opening direction (counterclockwise) is applied to the lid member 12 by the reversing spring 16, and the lid member 12 is stabilized.

A stopper 17 is provided in the headrest 3, and the lid member 12 is opened (ii).
When the rotation support member 13 comes into contact with the stopper 17 at the time when the cover member 12 assumes a substantially horizontal posture, the rotation of the lid member 12 in the counterclockwise direction is restricted.

A guide portion (guide rail) 18 extending in the longitudinal direction of the cover member 12 is provided inside the cover member 12, and the rotating support member 13 is connected to the guide portion 18 via a plurality of rollers 19. It is movable inside. In this embodiment, a slide mechanism is configured by the guide portion 18, the roller 19, and the rotation support member 13.

When the cover member 12 at the open position (ii) shown in FIG. 2 is pushed in the direction F, the guide portion 18 and the roller 19 roll, and the cover member 12 moves forward on the headrest 3. I do. When the rotation support member 13 hits the stopper 18a at the back end of the guide portion 18, the lid member 12 moves forward most, but the lid member 12 in this advanced state (iii).
Of the occupant sitting on the front seat 1 without projecting forward of the headrest 3. Further, when the lid member 12 advances, the rear end 12b does not project from the back surface 3a of the headrest 3, or even slightly if it projects.

The cover member 12 is covered with a cushioning material (impact absorbing material) on the front surface 12c, the front end 12a, the rear end 12b, and both sides facing in a direction perpendicular to the plane of the drawing.

The operation of the in-vehicle display device 10 shown in FIG. 2 will be described. When the display member 11 is not used, the lid member 1
2 is turned to the closed position (i). At this time, since the surface 12c and the like of the lid member 12 are covered with the cushion material, the safety of the occupant sitting on the rear seat can be enhanced.

When the display member 11 is used, the cover member 12 is rotated about the support shaft 14 to open the position (i).
Install in i). The rotation support member 13 and the lid member 12 can be stabilized at both the closed position (i) and the open position (ii) by the biasing force of the reversing spring 16.

Further, the lid member 12 in the open position (ii)
Is pushed forward, the guide portion 18 and the roller 19 roll, and the lid member 12 slides forward to advance (ii).
i), the lid member 12 does not protrude rearward, or the amount of protrusion is small. Therefore, the safety of the occupant in the rear seat can be improved.

In this embodiment, the roller 19 is used as a slide mechanism for the guide portion 18 so that the cover member 12 at the open position (ii) can be advanced with a small force. ing. Therefore, even if the lid member 12 is set to the open position (ii) and is used without being pushed forward, even if an impact acts on the vehicle body from the front, the lid member 12 moves forward due to the acceleration given to the front. , Can automatically reach the forward state (iii). Therefore, the safety is high even when the lid member 12 is used in the open position (ii).

Next, the structure of the in-vehicle display device 10A of the embodiment shown in FIG. 3 will be described. Also in this embodiment, the display member 11 is embedded in the headrest 3, and a screen thereof appears on the back surface 3 a of the headrest 3. The cover member 12 that covers the display member 3 has a surface or the like covered with a cushion material, similarly to the cover member 12 shown in FIG.

A rotation support member 13 is fixedly provided on the lid member 12, and a slide mechanism such as the guide portion 18 and the roller 19 shown in FIG. 2 is not provided. The rotation support member 13 is rotatably supported by a support shaft 14, but a spring member 21 is attached to the support shaft 14, and the cover member 12 always rotates in the direction of the closed position (i). You are being biased to.

In the headrest 3, a lock means 2 is provided as a mechanism constituting a part of the vehicle-mounted display device 10A.
5 and acceleration detection means 26 are provided.

The acceleration detecting means 26 comprises an arm 28 which freely swings around a shaft 27 and a weight 29 provided at the lower end of the arm. When the arm 28 extends in the direction of gravity by the weight 29, the arm 28 hits the stopper 31 and is regulated so as not to rotate further in the counterclockwise direction. It is preferable that an urging means is provided for urging the arm 28 in a direction in which the arm 28 is pressed against the stopper 31 with a relatively weak elastic force.

The lock means 25 is provided at the upper end of the arm 28. As shown in FIG. 4, a lock pin 33 having a spherical end or a curved surface close to a spherical surface and a lock spring 34 for urging the lock pin 33 in a protruding direction are provided on an upper portion of the arm 28. On the other hand, the rotation support member 13 has a lock hole 13a that is fitted to the lock pin 33.

In the embodiment shown in FIG. 3, when the cover member 12 is in the closed position (i) covering the display member 11, the spring member 21 is closed.
The lid member 12 is stabilized at the closed position (i) by the urging force in the clockwise direction.

When viewing the display member 11, the cover member 12 is turned upward to the open position (ii). In this open position (ii), the lock hole 1
3a is fitted with the lock pin 33, and the lid member 12 is locked at the open position (ii).

At this time, if a large forward acceleration acts on the headrest 3 due to a front impact or the like, the weight 29
Is rotated clockwise (G direction), the lock pin 33 at the upper end of the arm 28 is disengaged from the lock hole 13a of the rotation support member 13, and the lock of the lock means 25 is released.

At that moment, the lid member 12 rotates clockwise due to the urging force of the spring member 21 and the weight of the lid member 12, and rotates to the closed position (i) covering the display member 11. Therefore, the safety of the occupant in the rear seat can be improved. When the lock by the lock means 25 is released, the lid member 12 may rotate to the closed position (i) only by its own weight.

[0039]

As described above, in the present invention, since the display member is provided on the back of the headrest, the display member is installed at a height that is easy to see for the occupant of the rear seat. Further, since the surface of the lid member that covers the display member is covered with the cushion material, the display member is not exposed when not in use, so that the safety of the occupant of the rear seat can be improved.

Further, when the open lid member is configured to slide forward or rotate to the closed position when subjected to acceleration, the safety can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a side view showing a front seat on which an in-vehicle display device of the present invention is installed;

FIG. 2 is a side view showing the on-vehicle display device according to the first embodiment of the present invention;

FIG. 3 is a side view showing the in-vehicle display device according to the second embodiment of the present invention;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front seat 3 Headrest 10, 10A In-vehicle display device 11 Display member 12 Cover material 13 Rotation support member 13a Lock hole 14 Support shaft 16 Inversion spring 18 Guide part 19 Roller 21 Spring member 25 Lock means 26 Acceleration detection means 28 Arm 29 Weight 33 Lock pin

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) G09F 9/00 362 G09F 9/00 362

Claims (5)

[Claims] 1. An in-vehicle display device installed on a headrest above a seat in a vehicle, a display member installed at a position behind the headrest that can be seen from a rear seat, and a closed position covering the display member. And a lid member that operates between an open position where the display member is exposed, wherein the lid member has a cushion material on a surface when the display member is covered. On-board display device. 2. The lid member has an upper pivot point and pivots upward to reach the open position, and a slide mechanism is provided between the pivot point and the lid member. 2. The in-vehicle display device according to claim 1, wherein the lid member at the open position is slidable forward. 3. The in-vehicle display device according to claim 2, wherein the lid member is slidable forward when acceleration toward the front of the vehicle acts on the lid member in the open position. 4. The lid member has an upper pivot point and pivots upward to reach the open position, and a lock means for locking the lid member in the open position, and An acceleration detecting means for detecting an acceleration to release a lock by the lock means, wherein an urging force for rotating the lid member to the closed position is applied to the lid member when the lock by the lock means is released. 2. The in-vehicle display device according to 1. 5. The in-vehicle display device according to claim 4, wherein the urging force acts by the weight of the lid member or a spring member that elastically presses the lid member toward the closed position.