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JP2006056517

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Notice
This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
DESCRIPTION JP2006056517
An object of the present invention is to provide an audiovisual reproduction system capable of
comfortable viewing an image or the like. A video and audio reproduction system includes a
display (14), a home position where the monitor screen (14a) is substantially parallel to a ceiling
in a car, and a moving mechanism for moving the display (14) to a play position where the
monitor screen (14a) faces the rear of the car. Prepare. The moving mechanism includes a pivot
shaft 37 rotatably supporting the display 14, a pivoting means for rotationally driving the display
14 about the pivot shaft 37, a guide member 28, and a slide on the guide member 28. And linear
movement means for reciprocating the display 14 supported by the vehicle in the longitudinal
direction of the vehicle. [Selected figure] Figure 6
Image and sound reproduction system
[0001]
The present invention relates to a video and audio reproduction system which can be installed,
for example, in a passenger compartment (hereinafter referred to as an in-vehicle) of a mobile
unit such as a car.
[0002]
In recent years, displays for checking the operation of car navigation software, for example, or
for checking the rear when the vehicle is moving backward are often installed in automobiles.
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1
Such a display is generally disposed on a dashboard so that the driver can easily check the image
reproduced on the monitor screen. For example, a DVD (Digital Versatile Disc) driving device for
operating car navigation software is connected to this display, and is disposed close to the
driver's seat.
[0003]
By the way, when trying to appreciate a picture such as a movie using the display on the
dashboard from the rear seat, a part of the picture is blocked by the front seat and the figure of
the occupant seated on the front seat. I could not see calmly and appreciate it through the gap
between
[0004]
For this reason, there is known an example in which a display is provided in a car so as to be able
to be viewed from the rear seat.
FIG. 1 is a front view showing an example of a conventional display for watching a rear seat. In
the figure, 1 is a front seat, 2 is a headrest, and the headrest 2 is vertically movable by inserting
the pair of leg portions 3 into a pair of holes (not shown) in the upper portion of the front seat 1.
It is attached to the seat 1. A display 4 is mounted on a shoulder near the center of the front seat
1 in the vehicle, and the display 4 is fixed to the leg 3 of the headrest 2 by an arm 5.
[0005]
Such a display 4 is provided, for example, in a sedan type automobile, and provides a very high
visibility to the occupant seated on the rear seat. However, since the display 4 is disposed at the
shoulder of the front seat 1, the arrangement position is low, and the display 4 is a one box
provided with a three-row seat composed of, for example, a front seat, a middle seat and a rear
seat. When mounted on a car, the middle seat blocks the playback image of the display 4, so the
rear seat in the third row is also viewed through the gap between the middle seats, and it can not
be calmly viewed There was a problem.
[0006]
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FIG. 2 is a perspective view showing another example of a conventional display for rear seat
viewing. In the figure, 10 is a floor console, and 11 is an openable / closable lid attached to the
rear of the floor console 10 and capable of being vertically raised. A display 12 is disposed on
the back of the lid 11, and an operation unit 13 for the display 12 is provided at the rear of the
floor console 10 covered by the lid 11.
[0007]
However, since the display 12 is disposed on the floor console 10, the position of the display 12
is too low, and when the display 12 is mounted on, for example, a three-row sheet type one-box
car, the middle seat plays the display 12 Since the image is blocked, it is possible to look through
the gap between the middle sheets, and there is a problem that the playback image of the display
12 can not be viewed comfortably from the rear sheet.
[0008]
The present invention has been made to solve the above-mentioned problems, and it is an object
of the present invention to provide a video and audio reproduction system capable of
comfortably viewing an image etc. even from a rear seat in a car such as a three-row sheet type
one box type. Do.
[0009]
In the video and audio reproduction system according to the present invention, there is provided
a plate-like display for reproducing an image, a home position where the monitor screen of the
display is substantially parallel to a ceiling in the car, and a play of the monitor screen of the
display facing the back of the car A moving mechanism for moving the display to a position, an
audiovisual apparatus for providing audiovisual information to the display, and the moving
mechanism are included in the moving mechanism, attached to a ceiling in the car and extending
in a direction intersecting the front and rear direction of the car A pivoting means for pivoting
the display pivotally supported on the existing support shaft between the play position and the
home position, and the display at the play position when the transmission gear of the car is in the
back position Control mechanism to control the pivoting means to return to the home position
from Those were.
[0010]
A video and audio reproduction system according to the present invention comprises a guide
member attached to a ceiling in a car and extending in the longitudinal direction of the car, and a
linear movement means for reciprocating the display along the guide member. Is included.
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[0011]
A video and audio reproduction system according to the present invention includes a support
shaft attached to a ceiling in a car and extending in a direction intersecting the front-rear
direction of the car, and the support mechanism rotatably supported by the support shaft. And a
rotation lock mechanism for fixing the display at a home position.
[0012]
A video and audio reproduction system according to the present invention includes a support
plate supported by a guide member so as to be able to reciprocate and supporting a display, and
a reciprocation lock mechanism which regulates the reciprocation of the support plate with
respect to the guide member. The dynamic lock mechanism is provided along one longitudinal
direction of the vehicle on one of the engagement convex portion provided on one of the support
plate and the guide member and on the other of the support plate and the guide member And at
least two engagement recesses which engage with the portion, and biasing means which biases
the engagement protrusion to each of the engagement recesses.
[0013]
In the video and audio reproduction system according to the present invention, the moving
mechanism includes a horizontal sectional rotation mechanism which supports the display so as
to be able to swing in the lateral direction of the vehicle when the display is in the play position.
[0014]
In the video and audio reproduction system according to the present invention, an indicator for
displaying the operation state of the display is provided in the vicinity of the display.
[0015]
The video and audio reproduction system according to the present invention further includes a
wireless remote control unit that transmits an optical signal for controlling the operation of the
display, and the indicator includes a light receiving unit that receives the optical signal from the
wireless remote control unit. It is a thing.
[0016]
The video and audio reproduction system according to the present invention further includes a
wireless headphone that reproduces an audio related to an image reproduced by the display, and
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the indicator includes a transmitter configured to transmit audio information by an optical signal
to the wireless headphone.
[0017]
According to the present invention, since the display at the play position is held at a high position
in the car, it is possible to ensure sufficient visibility of the display reproduction image.
For this reason, the image reproduced on the display is not blocked by the front seat and the
occupant seated on it even when viewed from the rear seat, and there is no need to look from the
front seat, so that the viewer can calmly and comfortably watch. it can.
In addition, by returning the display to the home position by the movement mechanism when
unnecessary, it is possible to secure the rear view for the driver and improve the safety, and for
example, for the walk-through in the 3-row seat type one box car Aisle space can be secured.
Further, since the display can be freely opened and closed by the pivoting means, by opening the
display by the pivoting means as needed, the reproduced image of the display can be viewed on
the rear seat.
Furthermore, when putting the gear in the back and moving the car backward, the display does
not block the rear view through the rear window, so that sufficient safety can be ensured.
[0018]
According to the present invention, since the display can be reciprocated in the front-rear
direction of the vehicle, an optimal position can be appropriately selected by the linear
movement means when viewing a reproduced image of the display.
Therefore, for example, when mounted in a three-row sheet type one-box vehicle, it is possible to
provide an image to the occupant seated in the middle seat and the rear seat, or to provide an
image limited to the occupant seated in the rear seat only , It is possible to select various modes,
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and it is easy to use.
[0019]
According to the present invention, since the display can be fixed at the home position by the
manual lock mechanism, an inexpensive display unit can be provided.
Further, the display can be easily changed to the play position by releasing the lock mechanism
and suspending the display rotatably from the ceiling.
[0020]
According to the present invention, since the reciprocating lock mechanism is provided, the
position of the support plate can be appropriately selected with respect to the guide member,
and the display can be stopped stepwise at a desired position.
[0021]
According to the present invention, since the display can be manually oscillated in the left and
right direction of the car, it is possible to appropriately select the optimum position for viewing
the image reproduced on the display, and the usability is greatly improved. It becomes a thing.
Furthermore, when the front seat rotates to face the rear seat, the display can be substantially
directed to the front seat side in front of the car by changing the swing angle of the display so
that the display can be viewed from the front seat to the display. You can watch the playback
video of
[0022]
According to the present invention, even if the occupant is seated on the rear seat separated from
the display, the operating state of the display can be easily grasped.
[0023]
According to the present invention, even when the occupant is seated on the rear seat separated
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from the display, the display can be freely operated, and the usability is greatly improved.
[0024]
According to the present invention, even when the occupant is seated on the rear seat separated
from the display, the light signal from the transmission unit of the indicator can be freely
received, and the usability is greatly improved.
[0025]
Hereinafter, in order to explain the present invention in more detail, the best mode for carrying
out the present invention will be described according to the attached drawings.
[0026]
Embodiment 1
FIG. 3 is a block diagram showing an entire configuration of a video and audio reproduction
system according to Embodiment 1 of the present invention.
In the figure, 14 is a display, 15 is an indicator provided in the vicinity of the display 14 to
display the operation of the display 14, 16 is a light receiving unit, 17 is a wireless remote
controller, 18 is an external input terminal , 19 is a DVD player or a DVD changer, 20 is a head
unit, 21 is a speaker, 22 is a transmitter, 23 is a wireless headphone, and 24 is a media player.
[0027]
In such a video and audio reproduction system, operation control of the display 14 can be
performed by optical communication in which infrared light is emitted from the wireless remote
controller 17 to the light receiving unit 16 of the indicator 15.
The light receiving unit 16 may be provided on the display 14 itself instead of the indicator 15.
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[0028]
In addition, for example, a TV tuner or a game device body (not shown) can be connected to the
display 14 through the external input terminal 18, and video signals of game software etc. are
transmitted from such a game device body etc , And are output on the monitor screen of the
display 14.
Further, a DVD player or a DVD changer 19 is connected to the display 14 so that video software
or the like of a DVD is input as a video signal and output on a monitor screen of the display 14.
[0029]
The above-mentioned DVD player or DVD changer 19 is connected to the head unit 20, sound
software of DVD, etc. is inputted as an audio signal and outputted from the speaker 21.
Also, an audio signal from the head unit 20 is simultaneously sent to the plurality of wireless
headphones 23 by optical communication using infrared light through the transmitter 22.
Further, a media player 24 such as a CD player or an MD player is connected to the head unit 20,
and an audio signal from the media player 24 is also output from the speaker 21 or the wireless
headphone 23.
[0030]
The display 14 in such a video and audio reproduction system is a thin video reproduction
apparatus using, for example, a 10.4 inch size liquid crystal or plasma light emitting element as
shown in FIG. 4, and is fixed to a ceiling 25 in the car. A cover 26 is accommodated rotatably and
linearly movable in the front-rear direction of the vehicle.
Here, like a pendulum, the rotation of the display 14 is performed in the vertical cross section
and the longitudinal component of the car indicates one of the tangents of the circular arc
indicating the locus of the rotation, like a pendulum. We say thing to constitute.
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Further, in the rotation range of the display 14, the monitor screen 14 a is substantially parallel
to the ceiling 25 and completely accommodated in the cover 26 (home position), and the monitor
screen 14 a faces the rear of the car and the rear seat It is set between the state (play position)
where it is easy for the crew member to appreciate. Further, the linear movement range L of the
display 14 is appropriately determined in consideration of the size of the display 14, the size of a
car, and the like.
[0031]
The cover 26 is an elongated, substantially rectangular box so that it can be applied to, for
example, a one-box type or station wagon type car equipped with a three-row seat, as shown in
FIG. It is surrounded by a substantially U-shaped outer peripheral wall 26a formed in three
directions on the front side and both sides of the car, a notch 26b of the outer peripheral wall
26a formed on the rear side of the car, and the outer peripheral wall 26a It roughly comprises a
display 14 and a recess 26 c for receiving the indicator 15. An occupant of the rear seat can view
or confirm the image of the display 14 or the display of the indicator 15 through the notch 26b
of the cover 26.
[0032]
On the front of the indicator 15 (rear side of the car), as shown in FIG. 5, the operating condition
of the display 14 such as power on / off, the source of video and / or audio information to the
display 14 is DVD A display unit 15a is provided to indicate whether a player or a DVD changer
19, a media player 24 such as a CD player or an MD player, or a TV tuner (not shown) by turning
on or off a lamp. Further, on the front face of the indicator 15, a light receiving unit 16 for
receiving a signal from the wireless remote controller 17 and a transmitter 22 for transmitting a
signal to the wireless headphone 23 are also provided. From the wireless remote controller 17,
an instruction to forcibly close the display 14 and an instruction to adjust the position of the
display 14 can be issued.
[0033]
Next, the configuration of the moving mechanism of the display 14 will be described. As
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described above, the moving mechanism in this embodiment 1 includes the linear moving means
for reciprocating the display 14 in the longitudinal direction of the car, and the rotating means
for rotating the display 14 in the vertical cross section in the longitudinal direction of the car Is
included.
[0034]
1. Straight moving means A long base plate 27 is fixed to the lower surface of the ceiling 25 of
the vehicle as shown in FIGS. 6 and 7 and the lower surface of the base plate 27 extends in the
longitudinal direction of the vehicle A pair of guide rails (guide members) 28 which are parallel
to each other are attached. The guide rails 28 are C-shaped in cross section with lower portions
opened. Connecting posts 29 are attached to these guide rails 28 so as to be reciprocally
movable in the longitudinal direction of the vehicle. The upper end portion 29a of the connecting
post 29 has a shape corresponding to the sectional shape of the inner space of the guide rail 28
for reciprocating movement in the guide rail 28, and the lower end portion 29b is a substantially
rectangular sub plate The plate is fixed to 30). For this reason, the sub plate 30 is movable in the
longitudinal direction of the vehicle and in the horizontal direction with respect to the base plate
27 by the guide rails 28 and the connecting posts 29. A pair of holders 31 spaced apart in the
front-rear direction of the vehicle is attached to the upper surface of the sub plate 30, and a feed
screw 32 is disposed between the holders 31. One end of the feed screw 32 is rotatably fixed to a
substantially L-shaped holding plate 33 fixed to the lower surface of the base plate 27. Further, a
horizontal movement motor 34 for supplying a driving force to the feed screw 32 and a driving
force transmission mechanism 35 are attached to the base plate 27.
[0035]
The guide rail 28, the holder 31, the feed screw 32, the holding plate 33, the horizontal
movement motor 34, and the driving force transmission mechanism 35 as described above
constitute a linear movement means.
[0036]
Next, the operation of the linear moving means will be described.
First, as shown in FIGS. 6 and 7, when the display 14 is in the play position, when the horizontal
movement motor 34 is driven, the driving force is transmitted to the feed screw 32 through the
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driving force transmission mechanism 35. The sub plate 30 provided with the holder 31 in the
relation of the screw and the nut moves linearly to the front or rear of the car. At this time, the
sub plate 30 can be smoothly moved in the vicinity of the ceiling 25 in the vehicle by the guide
rail 28 and the connection post 29. In addition, the moving direction of the sub plate 30 is
changed by changing the rotation direction of the horizontal movement motor 34 or changing
the transmission path in the driving force transmission mechanism 35.
[0037]
When the display 14 is at the home position as shown in FIG. 7, since the movement distance
itself can not be taken large, it is basically not moved linearly. However, when the vehicle of the
moving image according to the present invention is applied to a long vehicle, for example, having
three or more rows of seats and linearly moving the display 14 from the front to the back of the
car or in the opposite direction, The linear movement in the position state narrows the rear view
of the driver through the rearview mirror and narrows the passage space for the walkthrough. In
such a case, it is desirable to linearly move the display 14 in the home position state.
[0038]
2. On the lower surface of the sub plate 30, a pair of hanging portions 36 extending in the
longitudinal direction of the vehicle with a separation dimension slightly larger than the width
dimension of the display 14 is formed. A pivoting shaft 37 rotatably supporting the upper side
surface of the display 14, a display pivoting gear 38 coaxially mounted on the pivoting shaft 37,
and a drive power transmission mechanism 39 drives the pivoting gear 38 Display opening and
closing motors 40 for supplying force are respectively attached. A photocoupler (not shown) for
detecting the rotational position of the display 14 is provided on one of the outer surface of the
hanging portion 36 of the sub plate 30 and the inner wall surface of the cover 22. (Not shown),
and the display rotation gear 38 is provided with a plurality of position detection holes 36a
formed in an arc centering on the rotation shaft 37 in the display rotation gear 38. It is possible
to detect (rotational angle).
[0039]
The rotation shaft 37, the display rotation gear 38, the driving force transmission mechanism 39,
and the display opening / closing motor 40 as described above constitute a rotation means.
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[0040]
Next, the operation of the turning means will be described.
First, when the display opening / closing motor 40 is driven when the display 14 is in the play
position as shown in FIGS. 6 and 7, the driving force is transmitted through the driving force
transmission mechanism 39 and the display rotation gear 38. The light is transmitted to the pivot
shaft 37 and the display 14 pivots. This pivoting continues until the home position where the
monitor screen 14a of the display 14 shown in FIG. 6 becomes substantially parallel to the
ceiling 25 in the car as shown in FIG. The rotation direction of the display 14 is changed by
changing the rotation direction of the display opening / closing motor 40 or changing the
transmission path in the driving force transmission mechanism 39. The tilt of the display 14 at
the play position can be appropriately determined in consideration of the position of the
occupant, the linear movement distance, and the like.
[0041]
In the video and audio reproduction system provided with the display 14 having such a
configuration, as shown in FIG. 8, a video and audio apparatus 41 such as a video player, a DVD
player, a TV tuner or a navigation unit is connected to the display 14. The audiovisual apparatus
41 provides video information and / or audio information (hereinafter referred to as audiovisual
information). The audiovisual apparatus 41 is connected in parallel to the front speaker 43 and
the rear speaker 44 of the speaker 21 via the amplifying device 42. The connection between the
amplification device 42 and the rear speaker 44 can be disconnected by the changeover switch
45 as necessary. Also, although the audiovisual apparatus 41 and the amplifying apparatus 42
can be disposed at any position in the vehicle, they may be dispersed or collectively disposed, for
example, in the space under each sheet in consideration of the effective use of space,
convenience and the like. it can.
[0042]
The controller (control mechanism) 46 is connected to the changeover switch 45 and to the
display opening / closing motor 40 via the motor driver 47. Therefore, when the controller 46
receives the open / close instruction signal instructing to open / close the display 14, the
controller 46 switches on / off of the rear speaker 44 via the switch 45 and the display 14 of the
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display 14 via the display open / close motor 40 or the like. It can control opening and closing.
That is, since the on / off of the rear speaker 44 can be switched according to the opening and
closing of the display 14, the sound field in the front seat and the rear seat can be controlled by
opening and closing the display 14.
[0043]
Also, when the transmission gear is in the back position, it is usually when the vehicle moves
backward, and the controller 46 closes the display 14 by the back gear switch signal to secure
the rear view and turns off the rear speaker 44. Thus, the safety during driving can be maximized
by considering the noise generated behind the vehicle.
[0044]
Further, when the cordless headphone 23 is used in the rear seat, by turning off the rear speaker
44, interference of sound between the rear speaker 44 and the cordless headphone 23 can be
prevented.
[0045]
Next, the operation of the video and audio reproduction system according to the first
embodiment will be described.
First, if the system is operating as shown in FIG. 9 (step ST1), it is determined whether the
information reproduced by the system is either video media or music media (step ST2).
If it is a video medium, it is determined whether a back gear switch signal has been issued (step
ST3). If there is no back gear switch signal (step ST4), the controller 46 controls the display
opening / closing motor 40 via the motor driver 47 to open the display 14 and place it in the
play position state (step ST4). ST5). In this state, linear movement of the display 14 is permitted.
Here, if the position adjustment switch is on (step ST6), the display 14 is linearly moved to adjust
the position (step ST7). Also, if the position adjustment switch is off, playback of the video is
started at that position.
[0046]
When the information reproduced by the system is music media (step ST2), when the switch
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signal is issued to the back gear (step ST3), or when the forced closing switch is on (step ST4),
the controller 46 Thus, the display opening / closing motor 40 is controlled via the motor driver
47 to close the display 14 and bring it into the home position state (step ST8).
[0047]
When the information reproduced by the system is neither video media nor music media (step
ST2), the home position is returned (step ST9), and the controller 46 controls the display opening
/ closing motor 40 via the motor driver 47. And the display 14 is closed (step ST10).
[0048]
As described above, according to the first embodiment, since the display 14 can be set to the
home position in addition to the play position by the pivoting means, the display 14 is
accommodated on the ceiling side when unnecessary or when the vehicle retreats. You can
ensure the walkthrough space and the rear view.
According to the first embodiment, it is possible to select the optimum position of the display 14
for the passenger sitting on the rear seat by the linear movement means, which is very
convenient.
[0049]
Second Embodiment
10 to 15 are diagrams showing the main part of a video and audio reproduction system
according to a second embodiment of the present invention, and FIG. 10 (a) is a front view of a
display, and FIG. b) is a top view of a display, FIG. 11 is sectional drawing in alignment with the
XI-XI line of FIG. 10 (b). Among the components of the second embodiment, the same
components as those of the first embodiment are designated by the same reference numerals,
and the description of those portions is omitted.
[0050]
A feature of the second embodiment is that the display 14 is manually rotatable and linearly
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movable.
[0051]
A moving mechanism related to the rotation of the display in the second embodiment will be
described.
The display 14 is pivotably attached to the lower surface of the sub plate 30 by a pivot shaft 37.
An engaging portion 48 is formed on the lower surface 14 c of the display 14, and an engaged
portion 49 is engaged with the inner surface of the outer peripheral wall 26 a of the cover 26
when the display 14 is returned to the home position. Is formed. The engaging portion 48 and
the engaged portion 49 constitute a rotation locking mechanism that fixes the display 14 at the
home position.
[0052]
As the engagement release means (not shown), for example, one which retracts or relatively
moves either one of the engaging portion 48 and the engaged portion 49 can be mentioned, but
it is not limited thereto. .
[0053]
When the engagement is released by such an engagement release means, the display 14 is swung
out and rotated rearward of the car by gravity around the pivot shaft 37, but the upper surface
14b of the display 14 is a sub plate In order to abut on the lower surface of 30, further pivoting
is restricted and finally suspended vertically.
[0054]
Next, a moving mechanism relating to the linear movement of the display in Embodiment 2 will
be described.
12 is a side view of the reciprocating lock mechanism (locked state) of the display shown in FIG.
11, FIG. 13 is a plan view of FIG. 12, and FIG. 14 is the display shown in FIG. 15 is a side view of
the reciprocation lock mechanism (unlocked state) of FIG. 14, and FIG. 15 is a plan view of FIG.
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[0055]
In the drawing, reference numeral 50 denotes a plurality of lock holes (engagement concave
portions) formed in the guide rail 28 at predetermined intervals along the reciprocation direction
(front and rear direction of the car) of the sub plate 30. And a lock pin (engagement convex
portion) engageable with the lock hole 50, 52 is a coil spring (biasing means) which always
biases the lock pin 51 upward to the lock hole 50, 53 Is a fixed pin erected on the sub plate 30,
54 is a long arm, 55 is a short arm that can be directly rotated by the knob 56, and 57 is a screw
58 between the arm 54 and the arm 55. 59 is a guide hole formed on the arm 54, into which the
fixing pin 53 is inserted to guide and guide the arm 54, and 60 is an arm 4 is an insertion hole
into which the lock pin 51 is inserted, and 61 is a spacer having a hole 61a interposed between
the sub plate 30 and the arm 54 and accommodating the lock pin 51 and the coil spring 52. .
[0056]
The lock pin 51 has a small diameter portion 51a which can be inserted into the lock hole 50 of
the guide rail 28, a large diameter portion 51b having an outer diameter larger than the small
diameter portion 51a, the large diameter portion 51b and the small diameter portion 51a And a
beveled shoulder 51c connecting the two.
The insertion hole 60 extends from the large diameter circular portion 60a to the base end of the
arm 54 and allows the large diameter portion 51b of the lock pin 51 to be inserted. Is an oval
formed of a small-diameter circular portion 60b which is impossible.
At a part of the edge of the large-diameter circular portion 60a of the insertion hole 60, an
inclined circumferential surface portion 60c whose diameter increases from the upper side to the
lower side is formed. The lock hole 50, the lock pin 51 and the coil spring 52 constitute a
reciprocating lock mechanism.
[0057]
Next, the operation will be described. First, as shown in FIGS. 12 and 13, when the knob 56 is in
the left-right direction of the car, the arm 54, the connecting arm 57 and the arm 55 are linearly
arranged along the front-rear direction of the car . At this time, the lock pin 51 constantly urged
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upward by the coil spring 52 ascends in the insertion hole 60 of the arm 54, but the small
diameter portion 51a of the lock pin 51 is inserted into and engaged with the lock hole 50 and
locked simultaneously. The sloped shoulder 51c of the pin 51 abuts on the inclined
circumferential surface 60c of the lock hole 50, thereby preventing the lock pin 51 from rising
against the biasing force of the coil spring 52. In this state, the subplate 30 becomes immovable
with respect to the guide rails 28, and linear movement of the display 14 fixed to the subplate 30
is also blocked. Further, the fixing pin 53 is in contact with the arm distal end side of the guide
hole 59 of the arm 54.
[0058]
Next, in order to release the engagement between the lock hole 50 and the lock pin 51 to free
the sub plate 30 with respect to the guide rail 28, as shown in FIG. 14 and FIG. When the arm 56
is rotated about 90 ° in the direction of arrow A (see FIG. 13) by rotating the knob 56 clockwise
until the arm abuts on the arm proximal end side of the guide hole 59 of the arm 54, the
connecting arm 57 The connected arms 54 move linearly in the direction of arrow B (see FIG.
15). The lock pin 51 is lowered relative to the insertion hole 60 along with the linear movement
of the arm 54 since the sloped shoulder 51 c is in contact with the edge of the insertion hole 60
of the arm 54. At the same time as the engagement between the small diameter portion 51a and
the lock hole 50 is released, the sloped shoulder 51c of the lock pin 51 abuts on the lower edge
portion of the small diameter circular portion 60b of the insertion hole 60, thereby raising the
lock pin 51 To stop. As described above, when the sub plate 30 is in the free state movable with
respect to the guide rail 28, the sub plate 30 is moved by pulling or pushing the knob 56 along
the guide rail 28, and the lock pin 51 is It can be engaged with another lock hole 50 different
from the lock hole 50 to fix the display 14 at that position.
[0059]
As described above, according to the second embodiment, since the display 14 can be manually
rotated or moved linearly, there is no need to use an electric component such as a drive motor,
and an inexpensive system configuration can be provided. Can.
[0060]
Third Embodiment
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FIG. 16 is a front view showing a display in the video and audio reproduction apparatus
according to Embodiment 3 of the present invention. The components of the third embodiment
which are the same as the components of the first embodiment are designated by the same
reference numerals, and the description thereof will be omitted.
[0061]
The feature of this embodiment 3 is that it has a horizontal section rotation mechanism for
swinging the display 14 in the left and right direction of the vehicle. That is, a pivoting plate 62 is
disposed rotatably between the pair of hanging portions 36 of the sub-plate 30, and the pivoting
plate 62 and the display 14 are connected by a ball bearing (horizontal section pivoting
mechanism) 63. The display 14 is configured to be able to swing in the left and right direction of
the car. In the third embodiment, a mechanism for causing the display 14 to swing manually is
adopted, but it is also possible to achieve automation by adopting an electric component such as
a drive motor for the mechanism.
[0062]
As described above, in the third embodiment, the display 14 at the play position is set to face the
rear of the car. However, depending on the seat on which the occupants sit, the display 14 may
be swung left and right as necessary. It is easy to do.
[0063]
FIG. 1 is a front view showing an example of a conventional display for watching a rear seat.
FIG. 2 is a perspective view showing another example of a conventional display for rear seat
viewing. FIG. 3 is a block diagram showing an entire configuration of a video and audio
reproduction system according to Embodiment 1 of the present invention. FIG. 4 is a perspective
view showing a display in the video and audio reproduction system shown in FIG. FIG. 5 is a front
view showing the indicator in the video and audio reproduction system shown in FIG. FIG. 6 is a
perspective view showing a moving mechanism when the display in the video and audio
reproduction system shown in FIG. 3 is opened. FIG. 7 is a perspective view showing a moving
mechanism when the display is closed in the video and audio reproduction system shown in FIG.
FIG. 8 is a circuit diagram for explaining the separation of the front speaker and the rear speaker
interlocked with the opening and closing of the display in the video and audio reproduction
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18
system shown in FIG. 3. FIG. 9 is a flow chart for explaining the operation associated with the
audiovisual reproduction system shown in FIG. FIG. 10 is a view showing a display in the video
and audio reproduction system according to Embodiment 2 of the present invention, wherein (a)
is a front view of the display and (b) is a plan view of the display. FIG. 11 is a cross-sectional view
taken along the line XI-XI in FIG. 10 (b). FIG. 12 is a side view showing the lock mechanism
(locked state) of the display shown in FIG. FIG. 13 is a plan view of FIG. FIG. 14 is a side view of
the lock mechanism (unlocked state) of the display shown in FIG. FIG. 15 is a plan view of FIG.
FIG. 16 is a front view showing a display in the video and audio reproduction system according
to Embodiment 3 of the present invention.
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19
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