close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2014107658

код для вставкиСкачать
Patent Translate
Powered by EPO and Google
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 JP2014107658
Abstract: The present invention provides a headphone configured so that three or more persons
can simultaneously hear the same audio without using an audio signal distributor or a wireless
connection device. A headphone (1) has an input terminal (11) for inputting an audio signal, a
speaker (13) for converting an audio signal inputted from the input terminal into sound and
emitting the sound, and an audio signal inputted from an input terminal (11) An amplifier 14 for
amplification and three or more output terminals 12, 21, 22, 31, 32 connected in parallel to the
amplifier 14 and outputting the audio signal amplified by the amplifier 14 are provided. [Selected
figure] Figure 4
ヘッドホン
[0001]
The present invention relates to a headphone provided with a function that allows multiple
people to hear the same sound at the same time.
[0002]
Recently, portable audio players (hereinafter simply referred to as audio players) play back audio
files.
Is popular. An audio player is usually equipped with one stereo mini jack as an audio output
terminal, and a stereo mini plug of headphones is connected to this stereo mini jack so that one
11-04-2019
1
person can listen to audio such as music.
[0003]
Audio player users may want to enjoy audio with two friends. At this time, by connecting an
audio signal distributor to the stereo mini jack of the audio player and connecting a stereo mini
plug of two headphones to this audio signal distributor, two people can simultaneously hear the
same audio (non- Patent Document 1).
[0004]
Also, some audio players transmit audio signals to headphones by a wireless connection method
such as Bluetooth (registered trademark). With such an audio player, it is possible to hear the
sound with the headphone selected as the output destination among the plurality of headphones
that have been paired (see Patent Document 1).
[0005]
Unexamined-Japanese-Patent No. 2004-128673
[0006]
Sanwa Supply Co., Ltd./Audio Distribution Adapter (Black) Product part number: MM-AD22BK,
[online], [Search on November 7, 2012], Internet <URL: http://www.sanwa.co.jp/product/
syohin.asp?
code = MM-AD22BK & cate = 1>
[0007]
Users of audio players may also want to enjoy audio together with multiple people (three or
more). At this time, a plurality of headphones can be connected by preparing a plurality of audio
11-04-2019
2
signal distributors described in Non-Patent Document 1 and connecting them in a bead.
[0008]
However, in this connection method, as the number of headphones connected increases, the
output impedance decreases, and the volume of each headphone decreases. In addition, it is
necessary to prepare a plurality of audio signal distributors, and the preparation and
management of the audio signal distributors is complicated.
[0009]
Further, in the case of a Bluetooth audio player as described in Patent Document 1, it is
impossible to listen to audio simultaneously with a plurality of headphones. In addition, as
described in Patent Document 1, the wireless connection between the audio player and the
headphones may be suddenly cut off during reproduction of sound due to the surrounding
environment. Therefore, there arises a problem that some of the plurality of users can not listen
to the voice.
[0010]
Therefore, an object of the present invention is to provide a headphone configured so that three
or more persons can simultaneously hear the same sound without using an audio signal
distributor or a wireless connection device.
[0011]
The headphone of the present invention includes an input terminal, an amplifier, a speaker, and a
plurality of output terminals.
An audio signal is input to the input terminal. The amplifier amplifies the audio signal input from
the input terminal. The speaker converts the audio signal amplified by the amplifier into sound
and emits the sound. The plurality of output terminals output audio signals amplified by the
amplifier.
11-04-2019
3
[0012]
The headphone according to the present invention includes an input terminal, a speaker, an
amplifier, and a plurality of output terminals. An audio signal is input to the input terminal. The
speaker converts an audio signal input from the input terminal into a sound and emits the sound.
The amplifier amplifies the audio signal input from the input terminal. The plurality of output
terminals output audio signals amplified by the amplifier.
[0013]
In this configuration, the headphone has a plurality of (two or more) output terminals, and each
output terminal outputs an audio signal amplified by the amplifier. Therefore, by connecting the
audio player to the input terminal and connecting the headphones to each output terminal, three
or more persons can simultaneously hear the same audio without using an audio signal
distributor or a wireless connection device. Also, since multiple headphones of the type
connected by a cable are connected to the headphones to which the audio player is connected,
there is no interruption in the audio regardless of the surrounding environment, and a sense of
security that it is actually connected by a cable Can be given to the user.
[0014]
In the above invention, the output terminal may be provided in a housing for accommodating the
speaker, a band for fixing the housing to the head, or an adapter connected to a signal line
extending from the housing.
[0015]
In this configuration, it is possible to select the output terminal to which another headphone is
connected according to the user's usage condition of the headphone and the number of
headphones to be connected, and to route the cable to connect the headphone according to the
user's preference .
[0016]
In the above invention, when the output terminal is provided with a dummy resistor and a
connector of an external device for outputting an audio signal is inserted, the amplifier is
connected to this connector, and when this plug is not inserted, the amplifier is connected to the
11-04-2019
4
dummy resistor You may do it.
[0017]
In this configuration, even if the number of headphones connected to the output terminal
changes, the change in impedance can be suppressed by the dummy resistance, so that the sound
quality and the volume can be prevented from changing according to the number of connected
headphones.
[0018]
According to the present invention, three or more persons can simultaneously hear the same
voice without using an audio signal distributor or a wireless connection device.
[0019]
The external appearance perspective view of the headphone according to the embodiment of the
present invention The external view of the headphone seen from the direction of arrow A shown
in FIG. 1 (bottom view) The external view of the headphone seen from the direction of arrow B
shown in FIG. The circuit diagram of the headphone according to the first embodiment The
circuit diagram of the headphone according to the second embodiment of the present invention
The external appearance perspective view of the headphone according to the third embodiment
of the present invention The circuit of the headphone according to the third embodiment The
circuit diagram of the headphone according to the fourth embodiment of the present invention.
The external perspective view of the headphone according to the fifth embodiment of the present
invention. The circuit diagram of the headphone according to the fifth embodiment of the present
invention.
[0020]
Hereinafter, a headphone according to an embodiment of the present invention will be described
with reference to the drawings.
This headphone has an input terminal for connecting a source device such as an audio player and
two or more output terminals for connecting other headphones, and three or more persons can
simultaneously hear the same sound together.
11-04-2019
5
In the following description, overhead type stereo headphones having a headband will be
described as an example of headphones.
[0021]
First, the configuration of the headphones will be described.
FIG. 1 is an external perspective view of a headphone according to an embodiment of the present
invention.
FIG. 2 is an external view (bottom view) of the headphone as viewed in the direction of arrow A
shown in FIG.
FIG. 3 is an external view (top view) of the headphone as viewed in the direction of arrow B
shown in FIG.
[0022]
The headphone 1 has a structure in which left and right housings 10 and 20 are connected to
both ends of a band 30 via arms 15 and 25 respectively.
[0023]
The band 30 is made of a strip-shaped resin or metal having elasticity curved in a semi-circular
shape, and is connected to the left and right housings 10 and 20 and locked to the head when
the user wears the headphone 1 .
Further, a cable 40 is wired inside the band 30.
[0024]
11-04-2019
6
The left and right housings 10, 20 are cylindrical with bottoms inside (semi-circumferential) and
outside (semi-circumferentially) the band 30, with the outer bottoms sealed and the inner
bottoms open It is a shape.
Inside the left and right housings 10 and 20, speakers 13 and 23 are respectively provided
toward the opening surface (bottom surface on the inner side). The left and right housings 10
and 20 are arranged such that the opening faces face each other. The speaker 13 emits the
sound of the L channel, and the speaker 23 emits the sound of the R channel.
[0025]
At the lower part of the outer periphery of the left housing 10, an input terminal 11 for an audio
signal and an output terminal 12 for an audio signal are provided. In the lower part of the outer
periphery of the right housing 20, output terminals 21 and 22 for audio signals are provided.
The input terminal 11 is, for example, a stereo minijack, to which the audio player 101 is
connected via an audio cable 51. The output terminals 12, 21 and 22 are, for example, stereo
minijacks, and the other headphones 111 are connected via the audio cables 52, 53 and 54,
respectively (see FIG. 4).
[0026]
Next, the circuit incorporated in the headphone 1 will be described. FIG. 4 is a circuit diagram of
a headphone according to the first embodiment of the present invention. The stereo amplifier 14
is connected to the input terminal 11. The stereo amplifier 14 is a circuit that amplifies an audio
signal input from the input terminal 11. The stereo amplifier 14 has an input impedance (for
example, 32 Ω) almost equal to that of a general headphone, and the output impedance is lower
than this. At the output side of the stereo amplifier 14, a speaker 13 for L channel, a speaker 23
for R channel, and output terminals 12, 21, 22 are connected in parallel. The speaker 23 for the
R channel and the output terminals 21 and 22 are connected to the stereo amplifier 14 via the
cable 40. The cable 40 includes an R channel line (R) for transmitting an R channel signal, an L
channel line (L) for transmitting an L channel signal, and a ground line (G). The ground line may
be a shield net. The speakers 13 and 23 convert the audio signal amplified by the stereo
amplifier 14 into voice and emit the voice. The output terminals 12, 21, 22 output the audio
signal amplified by the stereo amplifier 14. Although the stereo amplifier 14 operates with the
power of the battery built in the headphone 1, it may operate by receiving power supply via the
audio cable 51.
11-04-2019
7
[0027]
When the user listens to the audio of the audio player 101 by using the headphone 1 alone, the
user connects the stereo mini plug of the audio cable 51 connected to the audio player 101 to
the input terminal (stereo mini jack) 11 of the headphone 1 . The user wears the headphones 1
on both ears and operates the audio player 101 to start reproduction of sound, whereby the
speaker 13 and the speaker 23 can hear the sound amplified by the stereo amplifier 14.
[0028]
When the user listens to the same voice with a plurality of people using the headphone 1, the
audio player 101 is connected to the input terminal 11 of the headphone 1, and the output
terminal (stereo mini jack) of the headphone 1 is used. Connect stereo mini plugs (connectors) of
other headphones. When four users listen to the same voice together, as shown in FIG. 4, the
audio player 101 is connected to one input terminal 11 provided in the headphone 1, and three
output terminals 12, 21, and 21. 22 connect the headphones 111 to 113 respectively.
[0029]
After the user connects the audio player 101 and the headphones 111 to 113 to the headphones
1 as described above, the user wears the headphones 1 on both ears and operates the audio
player 101 to reproduce the sound to hear the sound. be able to. In addition, the other three
users can listen to the same sound amplified by the stereo amplifier 14 together with the other
users by wearing any of the headphones 111 to 113, respectively.
[0030]
Next, a headphone circuit according to a second embodiment of the present invention will be
described. FIG. 5 is a circuit diagram of a headphone according to a second embodiment of the
present invention. The headphone 2 shown in the figure is different from the headphone 1
shown in FIG. 4 in the connection form of the speakers 13 and 23, and the other parts are the
same as the circuit shown in FIG. In FIG. 5, the same components as in FIG. 4 are assigned the
11-04-2019
8
same reference numerals, and the differences from the configuration in FIG. 4 will be described
below.
[0031]
As shown in FIG. 5, a stereo amplifier is connected to the input terminal 11 as in the circuit of
FIG. 4, and the L channel speaker 13 and the R channel speaker 23 are connected. That is, the L
channel speaker 13 and the R channel speaker 23 are directly connected to the input terminal
11 without passing through the stereo amplifier 15. Three output terminals 12, 21 and 22 are
connected to the output side of the stereo amplifier 15. Among them, the output terminals 21
and 22 are connected to the stereo amplifier 15 via the cable 40. Further, a cable 41 for
connecting the input terminal 11 and the R channel speaker 23 is further incorporated in the
band 30. The stereo amplifier 15 may have a higher input impedance (eg, about 100 Ω) than the
stereo amplifier 14 shown in FIG. The input impedance may be determined in consideration of
the impedance of the speakers 13 and 23.
[0032]
With the above configuration, in the headphone 2, the audio signal output from the audio player
101 is directly emitted from the speaker 13 and the speaker 23 without being amplified.
Thereby, the user of the headphone 2 can listen to the sound based on the raw audio signal
output by the audio player 101. When the user of the headphone 2 enjoys audio alone, the stereo
amplifier 15 can be used as a passive headphone without being activated.
[0033]
Next, a headphone according to a third embodiment of the present invention will be described.
FIG. 6 is a circuit diagram of a headphone according to a third embodiment of the present
invention. In FIG. 6, the same components as in FIG. 4 are assigned the same reference numerals,
and the differences from FIG. 4 will be described.
[0034]
11-04-2019
9
In the headphone 3 of this embodiment, as shown in FIG. 6, the output terminals 12, 21 and 22
connecting the other headphones 111 to 113 are stereo minijacks with contact terminals, and
between the contact terminals and the ground. A dummy resistor R is connected. The other
configuration is the same as that of the circuit shown in FIG.
[0035]
With the above configuration, when the stereo mini-plugs of the other headphones 111, 112, and
113 are inserted, the output terminals (stereo mini-jacks) 12, 21, and 22 are connected to the
output pin of the stereo amplifier 14 and this stereo mini-plug. It connects and outputs an audio
signal to the other headphones 111, 112, 113. On the other hand, when the stereo mini-plugs of
the other headphones 111, 112, 113 are not inserted, the R terminals and L terminals of the
output terminals 12, 21, 22 are connected to the dummy resistors via the contact terminals.
Since the other end of the dummy resistor is grounded, the audio signal is consumed with the
dummy resistor as a load, and the variation of the output impedance can be suppressed
regardless of the presence or absence of connection of the other headphones 111, 112, 113.
[0036]
The dummy resistance may be the same impedance (for example, 32Ω) as the headphones
connected to the output terminals 12, 21 and 22 or may be a higher impedance (for example,
about 100Ω).
[0037]
FIG. 7 is an external perspective view of a headphone according to a fourth embodiment of the
present invention.
FIG. 8 is a circuit diagram of a headphone according to a fourth embodiment of the present
invention. The headphone 4 according to this embodiment differs from the headphone 1 shown
in FIG. In FIGS. 7 and 8, the same components as those in FIGS. 1 and 4 are assigned the same
reference numerals, and the differences from FIGS. 1 and 4 will be described.
[0038]
11-04-2019
10
As shown in FIG. 7, the headphone 4 has a configuration in which a terminal adapter 70 is
connected to the right housing 20 via a cable 42. The terminal adapter 70 has two output
terminals 71 and 72. On the other hand, the left and right housings 10 and 20 do not have
output terminals. The other headphones 111 and 112 are connected to the output terminals 71
and 72, respectively. The cable 42 is a flexible shielded cable having a length of about 40 cm,
and the terminal adapter 70 is as large as a so-called USB memory.
[0039]
As shown in FIG. 8, the speaker 13 and the cable 40 of the left channel are connected to the
input terminal 11. The other end of the cable 40 is connected to the speaker 23 and the cable 42
of the right channel. The cable 42 is connected to the stereo amplifier 16 of the adapter 70. The
stereo amplifier 16 amplifies the audio signal input from the cable 42 and outputs it to the
output terminals 71 and 72. The output terminals 71 and 72 are connected in parallel to the
stereo amplifier 16.
[0040]
When the user listens to the voice alone using the headphone 1, the plug of the audio cable 51
connected to the audio player 101 is connected to the input terminal 11 as in the headphone 1.
The user operates the audio player 101 to reproduce the sound, so that the speaker 13 and the
speaker 23 can hear the sound.
[0041]
In addition, when the user listens to audio by a plurality of people using the headphone 1, by
connecting the other headphones 111 and 112 to one or both of the two output terminals 71
and 72 of the terminal adapter 70, a maximum of three users can be connected. Can hear the
same voice together.
[0042]
With the above configuration, even when the other headphones 111 and 112 are connected, the
other headphones are not directly connected to the housings 10 and 20, and therefore, there is
11-04-2019
11
no distraction.
Also, since the cable 42 is a flexible shield cable and the terminal adapter 70 is about the size of
a USB memory, when the other headphones 111 and 112 are not connected, the user stores the
terminal adapter 70 in, for example, a chest pocket. By doing this, the headphone 4 can be used
without the terminal adapter 70 getting in the way.
[0043]
The cable 42 and the terminal adapter 70 may be detachably attached to the right housing 20.
Also, the stereo amplifier 16 may be provided on the housings 10 and 20 side.
[0044]
As described above, in the headphones of the present invention, three or more persons can hear
the same sound. Further, since the audio signal is amplified by the stereo amplifier 14 (15, 16),
even if a plurality of headphones are connected to the headphones 1, it is possible to prevent the
volume reduction of the sound emitted from each headphone. Further, since the audio player
101 and the other headphones 111 to 113 are connected by wire via the headphones 1 (2, 3, 4),
there is no problem that the sound is interrupted during the sound reproduction regardless of
the surrounding environment. .
[0045]
Although three output terminals are provided in the first to third embodiments and two output
terminals are provided in the fourth embodiment, the number of output terminals is not limited.
Also, the place where the output terminal is provided is not limited to the housings 10 and 20 or
the terminal adapter 70. For example, as shown in FIGS. 9 and 10, the output terminals 31 and
32 may be provided in the band 30 to increase the number of output terminals.
[0046]
1-4: Headphones 10, 20: Housing 11: (signal) input terminal 12, 21, 22, 31, 32, 71, 72: (signal)
output terminal 13, 23: speaker 15, 25: arm 30: band 30: band 40 ~ 42 ... Cable 51 ... Audio cable
11-04-2019
12
70 ... Terminal adapter 101 ... Audio player 111 to 113 ... Other headphones
11-04-2019
13
Документ
Категория
Без категории
Просмотров
0
Размер файла
22 Кб
Теги
jp2014107658, description
1/--страниц
Пожаловаться на содержимое документа