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JP2002079857

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DESCRIPTION JP2002079857
[0001]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an
on-vehicle detachable seat such as a child seat mounted on a vehicle, particularly a passenger
car.
[0002]
2. Description of the Related Art A conventional child seat is disclosed, for example, in Japanese
Patent Application Laid-Open No. 2-85030. FIG. 7 is a block diagram of a child seat electric
apparatus having a conventional sound producing unit (speaker), in which 2 is a sound
reproducing device, 10 is a reproducing means, 9 is an operating means, 16 is an amplifying
unit, 3 is a amplifying unit. It is a sound generation unit (speaker) that generates the sound of the
output of the amplification unit. Reference numeral 20 denotes a detection unit that detects the
presence or absence of a child sitting.
[0003]
Next, the operation of FIG. 7 will be described. When a child is seated on the child seat, the
detection unit 20 detects the pressure, and the regeneration means 10 is activated. As a result,
music or the like set in advance from the sound generation unit 3 to the reproduction means 10
starts to flow.
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1
[0004]
In the conventional child safety seat as shown in FIG. 7, it is possible to pronounce pre-set music
etc., but according to the situation of an adult, for example, a parent, the content and volume of
the child. It was difficult to operate the adjustment from the driver's seat. In addition, when the
child seat is attached to the rear seat in the opposite direction to the traveling direction of the
passenger car, it may be uneasy because the child's condition can not be seen during driving.
Furthermore, in the case of an older child such as a preschooler, even in the age subject to child
restraint, there is a problem that although it is possible to select music to be played by oneself, it
is not possible to freely select music.
[0005]
The present invention has been made to solve such a problem, and it is an object of the present
invention to obtain an on-vehicle detachable sheet capable of selecting contents to be
pronounced in accordance with the preference of the user. Another object of the present
invention is to obtain a driver capable of stopping the speaker output and suppressing the
volume according to the state of the user. Another object of the present invention is to obtain a
driver that can monitor the condition of the user regardless of the state of attachment of the seat.
[0006]
According to the present invention, there is provided an on-vehicle detachable seat according to
the present invention, which receives an external signal for receiving an output signal of a first
sound source attached to a main body and a second sound source attached to a vehicle. A sound
source selecting means for selecting the output signal of the first sound source and the signal
received by the external signal receiving portion; a speaker for outputting the signal selected by
the sound source selecting means; selection operation of the sound source selecting means; It
comprises control means for controlling the speaker output.
[0007]
Further, the external signal receiving unit is configured such that a signal path for receiving the
output signal of the second sound source is formed by mounting the main body on a vehicle.
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2
[0008]
Further, when the external signal from the external signal receiving unit is interrupted for a
predetermined time or more, or a predetermined value or less for a predetermined time, a signal
for stopping or suppressing the speaker output is output to the control means.
[0009]
Further, an operation prohibiting switch for prohibiting the selection operation of the sound
source selecting means and the control of the speaker output in the control means is provided.
Also, a camera for monitoring a user, and a video signal transmission means for transmitting a
video signal of the camera to a monitor installed near the driver's seat of a car are provided.
[0010]
Furthermore, the on-vehicle removable seat is for a child seat.
[0011]
DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment
Hereinafter, preferred embodiments of the present invention will be described with reference to
the drawings.
FIG. 1 is a schematic perspective view of a child seat according to a first embodiment of the
present invention.
In FIG. 1, 1 denotes a child seat body, 2 denotes a sound reproduction device, and 3 denotes a
sound generator (speaker). The sound reproduction device 2 is attached to the side of the child
safety seat 1 so that an older child can operate it.
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3
[0012]
FIG. 2 is an external perspective view of the sound reproducing apparatus 2. In FIG. 2, 4 is an
operation unit, 5 is a cassette tape insertion port, and 6 is a lens unit of a camera directed to the
position of the face of the user (seated person). Further, on the front side of the device, a power
source and an audio device already installed in the vehicle (hereinafter, representatively referred
to as a car stereo). Connector 7 and an operation prohibition switch 8 for connecting the speaker
outputs of.
[0013]
FIG. 3 is an internal block diagram of the sound reproducing apparatus of FIG. In FIG. 3, 2 is a
sound reproduction device, 9 is an operation means, 10 is a cassette reproduction means (first
sound source), 11 is a car stereo (second sound source), 12 is a speaker output of the car stereo
11, and 13 is a car An external signal receiving unit that receives a stereo speaker signal, and is a
signal processing unit that processes an external signal. Reference numeral 14 denotes sound
source selection means for selecting the signal of the cassette reproduction means 10 and the
signal of the car stereo 11. Reference numeral 15 denotes volume adjustment means for the
signal selected by the sound source selection means 14, and 16 denotes an amplification unit,
which outputs a signal to the sound generation unit (speaker) 3. Reference numeral 17 denotes
control means for controlling the selection operation of the sound source selection means 14, the
volume adjustment means 15, and the amplification unit 16. The control means 17 is connected
to the operation means, the external signal reception unit 13 and the operation prohibition
switch 8.
[0014]
Next, the operation of the first embodiment of the present invention will be described with
reference to FIG. The audio signal input from the speaker output 12 of the car stereo is converted
to an appropriate volume by the signal processing means which is the external signal receiving
unit 13 and is input to the sound source selecting means 14. The plurality of sound source
signals input to the sound source selection means 14 are selected by the output of the control
means 17 by the operation of the operation means 9. Then, the volume adjustment means 15
and the amplification unit 16 are adjusted by the output of the control means 17 by the
operation of the operation means 9, and the sound source signal is adjusted in volume, amplified
and output to the sound generation unit 3. The operation prohibition switch 8 operates so that
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4
the control means 17 does not respond to the operation signal of the operation means 9 when
the switch is on.
[0015]
Although the reproduction means 10 incorporated in the main body has been described as
reproduction of a cassette tape, this may be a reproduction means of a recording medium such as
a CD (compact disc), an MD (mini disc) or a semiconductor memory recording music or the like.
good. Moreover, you may use these together.
[0016]
In order to operate as described above, when the child using the child seat can not operate by
himself like the baby, the driver selects the car stereo 11 by the operation means 9, and the car
stereo 11 is selected. For example, it is possible to listen to the child by attaching a cassette tape
or the like of music preferred by the child. In this case, even while the driver is driving, it is
possible to arbitrarily change the tune or adjust the volume by operating the car stereo 11 at the
driver's seat.
[0017]
FIG. 4 is an internal block diagram of the external signal receiving unit 13, and FIG. 5 is a flow
chart for explaining the operation. Reference numeral 21 denotes volume adjustment means,
which receives the speaker output from the car stereo 11, adjusts the volume, and outputs it to
the sound source selection means 14. 22 is a speaker output presence / absence detection
means, and 23 is a clocking means. The speaker output from the car stereo 11 is input not only
to the volume adjustment means 21 but also to the presence / absence detection means 22 of the
speaker output. After powering on the in-vehicle removable sheet (st1), when the speaker output
is interrupted (st2), the output from the presence / absence detection means 22 is outputted to
the clock means 23 and the judgment means 24. The time measuring means 23 measures the
time by the output (st3), and when the interruption of the speaker output continues for a
predetermined time, the output is outputted to the judging means 24. The judging means 24
judges that the speaker output has been interrupted for a predetermined time by both outputs of
the presence / absence detection means 22 and the clocking means 23, and causes the control
means 17 to stop or suppress the operation of the amplification unit 16 (that is, the speaker
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5
output). Output the signal of If the car stereo 11 is being selected (st4), the control means 17
stops or suppresses the operation of the amplification unit 16 (st5), and stops or suppresses the
output of the speaker 3 (st6).
[0018]
When the interruption of the speaker output does not continue for a predetermined time, the
output of the presence / absence detection means 22 disappears, so the time measurement of the
clock means 23 is reset. Further, although the speaker output presence / absence detection
means 22 is configured to output by interrupting the speaker output, the speaker output may be
output at a predetermined value or less.
[0019]
In this way, when the child falls asleep, the operation or volume of the car stereo 11 is
interrupted or minimized for a certain period of time without operating the sound reproduction
device 2 of the child seat. Thus, the operation (that is, the speaker output) of the amplification
unit 16 can be stopped or suppressed. Furthermore, by turning on the operation prohibition
switch 8, it is possible to prevent an abnormality such as an increase in volume caused by a child
carelessly touching the operation means. When the child is an elder, such as a kindergarten child,
by turning off the operation prohibit switch 8, the child can select the sound source by the
operation means or adjust the volume.
[0020]
Although connection between the car stereo 11 and the external signal receiver 13 may be made
by connecting a signal line of the speaker output of the car stereo 11 to the connector 7 with a
cord, The signal line is wired to the socket provided at the mounting position of the in-vehicle
detachable sheet, while the in-vehicle detachable sheet is provided with a plug connected to the
input portion of the external signal receiving unit 13 If the plug is connected to the socket and a
signal path is formed at the same time when the detachable sheet is attached and fixed to the
mounting position of the vehicle, it is possible to easily connect the both, which is convenient.
[0021]
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6
Embodiment 2 FIG.
Second Embodiment A second embodiment will now be described with reference to FIGS. 2 and
6. In FIG. 2, the camera lens 6 is mounted as shown. FIG. 6 is an internal block diagram of the
sound reproducing apparatus, but the monitor 19 is added to the configuration of the first
embodiment through the camera 18 and the video signal transmission means. The operation
relating to the reproduction of the audio signal is exactly the same as that of the first
embodiment. The camera lens 6 is attached to the child seat body so as to capture the
appearance of a child sitting in the child seat, and a video signal from the camera 18 is sent to
the monitor 19. The monitor 19 is installed at a position near the driver's seat where the driver
can easily see.
[0022]
With the above construction, for example, even if the child seat is attached to the rear seat in the
opposite direction to the traveling direction, the situation of the child can be easily grasped from
the driver's seat. Although this embodiment has been described as a dedicated monitor 19, when
the car stereo 11 has a video display function, the output signal of the camera 18 is used as the
video input of a car stereo having the above video display function. By inputting to the terminal,
it is possible to easily obtain the same purpose. Moreover, the monitor of a car navigation
apparatus can also be combined as a monitor. Although the present invention has been described
above as being applied to a child seat, the present invention may be applied to a vehicle-mounted
detachable seat, for example, a mobile seat for disabled persons.
[0023]
As described above, according to the on-vehicle removable sheet of the present invention, the
first sound source mounted on the main body and the output signal of the second sound source
mounted on the vehicle are received. An external signal receiving unit; a sound source selecting
means for selecting an output signal of the first sound source and a signal received by the
external signal receiving unit; a speaker for outputting the signal selected by the sound source
selecting means; Since the control means for controlling the selection operation and the speaker
output is provided, it is possible to effectively use the existing audio equipment, and to obtain the
on-vehicle removable sheet capable of selecting the content to be pronounced according to the
preference of the user.
[0024]
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7
Also, since the external signal receiving unit is configured such that the signal path for receiving
the output signal of the second sound source is formed by mounting the main body to the car,
the mounting sheet for mounting on a car is mounted on the car By doing this, a signal path with
the output of the second sound source is formed, which is easy and convenient to handle.
[0025]
Further, when the external signal from the external signal receiving unit is interrupted for a
predetermined time or more or a predetermined value or less, a signal for stopping or
suppressing the speaker output is output to the control means, so that the user can Thus, the
driver can obtain a speaker output that can be stopped and the volume can be suppressed from
the driver's seat.
[0026]
Further, since the operation prohibiting switch for prohibiting the selection operation of the
sound source selecting means and the control of the speaker output in the control means is
provided, the child carelessly touches the operation means to prevent an abnormality such as an
increase in volume. can do.
[0027]
Further, since the camera for monitoring the user and the video signal transmission means for
transmitting the video signal of the camera to the monitor installed in the vicinity of the driver's
seat of the car are provided, the driver Can monitor the condition of the user and thus contribute
to the safe operation of the car.
[0028]
Brief description of the drawings
[0029]
FIG. 1 is a schematic perspective view of a child seat according to a first embodiment of the
present invention.
[0030]
FIG. 2 is an external perspective view of the sound reproduction device of FIG. 1;
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[0031]
It is a block diagram of the electric equipment of Embodiment 1 of this invention.
[0032]
FIG. 4 is an internal block diagram of an external signal receiving unit.
[0033]
FIG. 5 is a flowchart for explaining the operation.
[0034]
FIG. 6 is a block diagram of an electric device according to a second embodiment of the present
invention.
[0035]
FIG. 7 is a block diagram of a child seat electric apparatus provided with a conventional sound
producing unit (speaker).
[0036]
Explanation of sign
[0037]
DESCRIPTION OF SYMBOLS 1 Child seat main body 2 Sound reproduction apparatus 3 Sounding
part (speaker) 4 Operation part 5 Cassette insertion slot 6 Lens part 7 Connector 8 Operation
prohibition switch 9 Operation means 10 Cassette reproduction means 11 Car stereo 13 External
signal reception part 14 Sound source selection means 15 Volume Adjustment means 16
amplification unit 17 control means 18 camera 19 monitor 20 detection unit 21 volume
adjustment means 22 presence / absence detection means 23 clock means.
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