JP4039793B2 - In-vehicle display device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicle-mounted display device having a display screen such as a liquid crystal display, and more particularly to a vehicle-mounted display device that is installed at a position that is easy to see from a rear seat and is safe in an emergency.
[0002]
[Prior art]
Recently, in-vehicle display devices installed in automobiles have been used. The in-vehicle display device includes 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 interior. When installed on the ceiling, it is common to have a posture along the ceiling when not in use, and to rotate downward when in use so that the screen can be seen from the rear seat.
[0004]
Recently, an in-vehicle display device provided on the back side of the headrest of the front seat in the passenger compartment has also been proposed.
[0005]
[Problems to be solved by the invention]
However, in the case where the in-vehicle display device is installed in front of the front seat as described above, there is a possibility that the front vision of the vehicle is obstructed. In addition, in the case where the vehicle is installed on the ceiling, it is necessary to make it possible to install a vehicle-mounted display device as a structure of the ceiling portion of the vehicle, and it is necessary to modify the vehicle body itself in order to attach the vehicle-mounted display device. In addition, it is necessary to wire the power line and the antenna line on the ceiling, and wiring in the vehicle is complicated.
[0006]
Moreover, although it has the advantage that it is easy to see the screen from the rear seat, the one installed on the back of the headrest has a problem in safety in an emergency because the display screen is always exposed on the back of the headrest.
[0007]
The present invention solves the above-described conventional problems, and has an object of providing a vehicle-mounted display device that is provided with a display member on the back surface of a headrest and has excellent safety in an emergency.
[0008]
[Means for Solving the Problems]
The first aspect of the present invention is an in-vehicle display device installed on a headrest on a seat in a vehicle.
A display member installed at a position visible from the rear seat on the back surface of the headrest, and a lid member that rotates between a closed position that covers the display member and an open position where the display member is exposed ; The lid member in the open position is slidable forward in the upper part of the headrest,
Said lid member, when in Tsu covering the display member, possess a surface facing backward, a first end surface facing upward, a second end surface facing downward, and a cushion material on each of both sides ,
When the lid member in the open position slides forward, the first end surface does not protrude forward than the headrest, and the second end surface does not protrude rearward than the headrest. Is.
[0009]
In the on-vehicle display device, since the display member is installed on the back surface of the headrest of the front seat, the passenger 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 lid member, and the surface of the lid member is covered with a cushioning material, so that it is possible to ensure impact safety in an emergency.
[0011]
In the above structure, when the display member is exposed, the lid member rotated upward is moved forward, so that the lid member does not protrude rearward, and safety for the passenger in the rear seat can be improved. it can.
[0012]
Further, when acceleration to the front of the vehicle is applied to the lid member when in the open position, if the lid member is slidable forward, the display member is visually observed while the lid member is rotated upward. Even if an impact is applied at this time, there is no protrusion protruding backward from the headrest, and the safety of the passenger in the rear seat can be improved.
[0013]
A second aspect of the present invention is an in-vehicle display device installed on a headrest on a seat in a vehicle,
A display member installed at a position visible from the rear seat on the back surface of the headrest, and a lid member that rotates between a closed position that covers the display member and an open position where the display member is exposed is provided. And
The lid member has a cushion material on each of a surface facing backward, a first end surface facing upward, a second end surface facing downward, and both side surfaces when covering the display member,
A lock unit that locks the lid member in the open position; and an acceleration detection unit that detects acceleration forward of the vehicle and releases the lock by the lock unit, and when the lock by the lock unit is released, A biasing force that rotates to the closed position acts on the lid member .
[0014]
In this case, the urging force acts by the weight of the lid member, or acts by a spring member that presses the lid member toward the closed position.
[0015]
In the above means, when the lid member is rotated upward and the screen of the display member is exposed, when an impact from the front is applied, the lid member is rotated to the closed position so as to cover the display member. Thus, the impact safety of the rear seat occupant can be enhanced.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is a side view showing a front seat of an automobile provided with the in-vehicle display device of the present invention, FIG. 2 is a side view of the in-vehicle display device according to the first embodiment of the present invention, and FIG. The side view of the vehicle-mounted display apparatus of 2nd Embodiment, FIG. 4 is sectional drawing of the IV-IV line of FIG.
[0017]
FIG. 1 shows a front seat (passenger seat) 1 of an automobile from the side. The front seat 1 includes a seating seat 2, a back seat 4, and a headrest 3 provided on the back seat 4. The surfaces of the seating seat 2, the back seat 4 and the headrest 3 are formed of a cushion material (impact absorber).
[0018]
The in-vehicle display device 10 of the present invention is provided on the back of the headrest 3. As shown in FIG. 2, in the in-vehicle display device 10, the display member 11 is embedded in the back portion of the headrest 3, and the display screen appears on the back surface 3 a of the headrest 3.
[0019]
The display member 11 is a flat display such as a color liquid crystal display, and can display TV images, video images, game images, navigation images, and the like.
[0020]
Further, a lid member 12 that covers the display member 11 is provided. The lid member 12 is provided with a rotation support member 13, and the rotation support member 13 is rotatably supported by a support shaft 14 provided inside the upper end of the headrest 3.
[0021]
A reverse spring (torsion spring) 16 is attached between the rotation support member 13 and the headrest 3, and when the lid member 12 is in the closed position (i) covering the display member 11, the reverse spring 16 when the lid member 12 is urged and stabilized in the closing direction (clockwise) at the closed position, and the lid member 12 is rotated upward to reach the open position (ii) where the display member 11 is exposed. A biasing force in the opening direction (counterclockwise direction) is applied to the lid member 12 by the reversing spring 16 to stabilize the lid member 12.
[0022]
Further, a stopper 17 is provided in the headrest 3, and when the lid member 12 is in a substantially horizontal posture at the open position (ii), the rotation support member 13 hits the stopper 17, and the lid member 12 is counteracted. The clockwise rotation is restricted.
[0023]
A guide portion (guide rail) 18 extending in the longitudinal direction of the lid member 12 is provided inside the lid member 12, and the rotation support member 13 moves in the guide portion 18 via a plurality of rollers 19. It is free. In this embodiment, the guide portion 18, the roller 19, and the rotation support member 13 constitute a slide mechanism.
[0024]
When the lid member 12 in the open position (ii) shown in FIG. 2 is pushed in the F direction, the guide portion 18 and the roller 19 roll, and the lid member 12 moves forward on the headrest 3. The lid member 12 moves forward most when the rotation support member 13 hits the stopper 18a at the back end of the guide portion 18, but the front end 12a of the lid member 12 in this advanced state (iii) It does not protrude forward and does not hit the head of an occupant seated in the front seat 1. Further, when the lid member 12 moves forward, the rear end 12b does not protrude from the back surface 3a of the headrest 3 or only slightly protrudes.
[0025]
Further, the lid member 12 is covered with a cushioning material (impact absorbing material) on the surface 12c, the front end 12a, the rear end 12b, and both side surfaces opposed to each other in a direction orthogonal to the paper surface.
[0026]
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 12 is rotated to the closed position (i). At this time, the surface 12c and the like of the lid member 12 are covered with a cushioning material, so that the safety of the passenger sitting on the rear seat can be improved.
[0027]
When the display member 11 is used, the lid member 12 is rotated about the support shaft 14 and installed at the open position (ii). 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 urging force of the reversing spring 16.
[0028]
Further, when the lid member 12 in the open position (ii) is pushed forward, the guide portion 18 and the roller 19 roll, the lid member 12 slides forward to enter a forward state (iii), and the lid member 12 It does not protrude backward or the amount of protrusion is small. Therefore, the safety | security of the passenger | crew of a backseat can be improved.
[0029]
In this embodiment, the roller 19 rolls the guide portion 18 as a slide mechanism so that the lid member 12 at the open position (ii) can be advanced with a slight force. Therefore, even if the lid member 12 is in the open position (ii) and is used without being pushed forward as it is, even if an impact is applied to the vehicle body from the front, the lid member 12 moves forward due to acceleration applied to the front. , Can automatically reach the forward state (iii). Therefore, even when the lid member 12 is used in the open position (ii), safety is high.
[0030]
Next, the structure of the in-vehicle display device 10A according to the embodiment shown in FIG. 3 will be described.
Also in this embodiment, the display member 11 is embedded in the headrest 3 and the screen appears on the back surface 3 a of the headrest 3. The lid member 12 covering the display member 3 has a surface covered with a cushion material, similar to that shown in FIG.
[0031]
The lid member 12 is provided with a rotation support member 13 fixed thereto, and is not provided with a slide mechanism such as the guide portion 18 and the roller 19 shown in FIG. The rotation support member 13 is rotatably supported by the support shaft 14, but a spring member 21 is attached to the support shaft 14, and the lid member 12 always rotates in the direction of the closed position (i). It is energized to do.
[0032]
In the headrest 3, a lock unit 25 and an acceleration detection unit 26 are provided as a mechanism constituting a part of the in-vehicle display device 10A.
[0033]
The acceleration detecting means 26 comprises an arm 28 that freely swings about 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 is restricted so as to hit the stopper 31 and not rotate further counterclockwise. It is preferable that an urging means 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 is provided.
[0034]
The locking means 25 is provided at the upper end portion of the arm 28. As shown in FIG. 4, an upper portion of the arm 28 is provided with a lock pin 33 having a spherical surface or a curved surface close to a spherical surface, and a lock spring 34 for urging the lock pin 33 in the protruding direction. On the other hand, the rotation support member 13 has a lock hole 13 a that fits into the lock pin 33.
[0035]
In the case shown in FIG. 3, when the lid member 12 is in the closed position (i) covering the display member 11, the lid member 12 is stable in the closed position (i) by the urging force of the spring member 21 in the clockwise direction. .
[0036]
When viewing the display member 11, the lid member 12 is rotated upward to the open position (ii). In the open position (ii), the lock hole 13a of the rotation support member 13 is engaged with the lock pin 33, and the lid member 12 is locked in the open position (ii).
[0037]
At this time, when a large forward acceleration acts on the headrest 3 due to an impact from the front, the arm 28 having the weight 29 is rotated clockwise (G direction), and the lock pin 33 at the upper end of the arm 28 is moved. The lock means 25 is released from the lock hole 13a of the rotation support member 13 and unlocked.
[0038]
At that moment, the cover member 12 is rotated clockwise by the urging force of the spring member 21 and the weight of the cover member 12, and is rotated to the closed position (i) covering the display member 11. Therefore, the safety | security of the passenger | crew of a backseat can be improved. In addition, when the lock | rock by the said locking means 25 is cancelled | released, the cover member 12 may rotate to a closed position (i) only with dead weight.
[0039]
【The invention's effect】
As described above, in the present invention, since the display member is provided on the back portion of the headrest, the display member is installed at a height that is easy to see for the passenger in the rear seat. Moreover, since the surface of the cover material which covers the said display member is covered with the cushion material, a display member is not exposed at the time of non-use, and can improve the safety | security of the passenger | crew of a rear seat.
[0040]
Further, when the lid member in the open state slides forward or rotates to the closed position when subjected to acceleration, safety can be further improved.
[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 on-vehicle display device according to the second embodiment of the present invention;
4 is a cross-sectional view taken along line IV-IV in FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Front seat 3 Headrest 10, 10A In-vehicle display apparatus 11 Display member 12 Cover material 13 Rotation support member 13a Lock hole 14 Support shaft 16 Reversing spring 18 Guide part 19 Roller 21 Spring member 25 Lock means 26 Acceleration detection means 28 Arm 29 Weight 33 Lock pin

Claims (4)

In a vehicle-mounted display device installed on a headrest on a seat in a vehicle,
A display member installed at a position visible from the rear seat on the back surface of the headrest, and a lid member that rotates between a closed position that covers the display member and an open position where the display member is exposed ; The lid member in the open position is slidable forward in the upper part of the headrest,
Said lid member, when in Tsu covering the display member, possess a surface facing backward, a first end surface facing upward, a second end surface facing downward, and a cushion material on each of both sides ,
When the lid member in the open position slides forward, the first end surface does not protrude forward than the headrest, and the second end surface does not protrude rearward than the headrest. In-vehicle display device. When the acceleration of the vehicle front to the lid member when in the open position is applied, the lid member is vehicle display device according to claim 1, wherein the slidable forward. In a vehicle-mounted display device installed on a headrest on a seat in a vehicle,
A display member installed at a position visible from the rear seat on the back surface of the headrest, and a lid member that rotates between a closed position that covers the display member and an open position where the display member is exposed is provided. And
The lid member has a cushion material on each of a surface facing backward, a first end surface facing upward, a second end surface facing downward, and both side surfaces when covering the display member,
A lock unit that locks the lid member in the open position; and an acceleration detection unit that detects acceleration forward of the vehicle and releases the lock by the lock unit, and when the lock by the lock unit is released, An in- vehicle display device, wherein a biasing force that rotates to the closed position acts on the lid member. The in-vehicle display device according to claim 3 , wherein the urging force acts by a dead weight of the lid member or acts by a spring member that presses the lid member toward the closed position.

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