close

Вход

Забыли?

вход по аккаунту

?

DESCRIPTION JP2007167304

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 JP2007167304
An object of the present invention is to allow a person seated on a table to hear a reproduced
sound well in such a state and to make the sound difficult to spread out of the use environment.
SOLUTION: In a table provided with a top plate 1 and a leg portion 2 supporting the same, an
input sound signal is converted into a vibration along a thickness direction of the top plate 1, and
the top plate 1 is a vibration of a speaker Excitation means 5 for transmitting to the top 1 to be a
plate is provided. [Selected figure] Figure 1
テーブル
[0001]
The present invention relates to a table used, for example, in meetings, meetings, meals and
cafes, and more particularly to a table provided with a top and legs supporting the table.
[0002]
Conventionally, as this type of table, as shown in FIG. 6, there has been a table in which a
microphone 10 and a speaker 11 are attached to the top plate 1 in correspondence with
respective seating positions (see, for example, Patent Document 1) .
And a television monitor and a camera are also attached to others, and it is comprised so that it
can be used for the teleconference etc. in remote places, and, regarding the speaker 11, the head
of the person P who sat on the ceiling plate 1 periphery side. It was attached so that the sound
15-04-2019
1
was emitted in the direction where it was located.
[0003]
Japanese Patent Application Laid-Open No. 62-167506
[0004]
According to the above-described conventional table, as shown in FIG. 6, the speaker 11 attached
on the top plate 1 is attached so that the person P sitting can easily hear the sound. The person P
who is likely to hear the reproduced sound of the speaker 11 spreads to the back of the person P
and consequently leaks to the outer peripheral side of the table.
There is no problem if only one table is installed and it is used only in the conference like a
conference room, for example, a plurality of tables are installed in one room, When each is used
independently, the speaker reproduction | regeneration sound of each table interferes, and there
exists a problem which becomes difficult to hear, respectively. The usage condition where such a
problem occurs is, for example, a situation where the speaker's remarks or BGM are sent from
the speaker in an environment such as a meeting room or a meeting room where a plurality of
tables are installed, or a restaurant or coffee shop. Is mentioned as an example. In other words,
there is a usage form that allows each person's speech in a room with background noise to be
clearly heard by giving some loud voice and playing it back as playback sound, or to play BGM
for each table and enjoy it. It can be mentioned.
[0005]
Therefore, an object of the present invention is to solve the above problems and provide a table
in which a person sitting on a table can well hear the reproduced sound in that state, and the
sound is unlikely to spread outside the use environment. is there.
[0006]
A first feature of the present invention is a table including a top and legs supporting the top, and
converting an input sound signal into vibration along the thickness direction of the top, There is
provided an excitation means for transmitting the top plate to the top plate so that the top plate
becomes a diaphragm of the speaker.
15-04-2019
2
[0007]
According to the first feature configuration of the present invention, the input sound signal is
converted into vibration along the thickness direction of the top plate by the vibration means,
and the top plate is transmitted so as to be the diaphragm of the speaker. As a result, sound
reproduction using the so-called "flat panel speaker" principle can be realized by a table.
And although the reproduction sound emitted from the top is transmitted along the thickness
direction (up and down) of the top, the spread to the zone outside the flat range of the top
becomes extremely small, and the table is surrounded. At a close position, the user can hear the
playback sound well, but when the user is slightly away it hardly hears the playback sound, and
extremely high concealment sound playback is realized.
As a result, it goes without saying that when one table is installed in one room to conduct a video
conference, a plurality of tables are installed in one room, and even when individual meetings
and meetings are conducted, respectively You can listen in a state where it is easy to hear only
the playback sound at the corresponding table. And also, in a restaurant or coffee shop etc., even
if there is background noise under the environment, it is very easy to hear by expanding the
voice of the person who is present and generating from the top plate, or each table Every time
any BGM is reproduced, the interference between adjacent tables is almost eliminated, and the
usability is extremely improved.
[0008]
A second feature of the present invention is that the vibration means is provided with sound
input means capable of inputting a sound signal.
[0009]
According to the second feature configuration of the present invention, in addition to being able
to achieve the above-mentioned effects according to the first feature configuration of the present
invention, for example, a microphone or a music player (for example, a cassette player, a CD
player) Using a sound input unit (a unit capable of inputting a sound signal to an excitation unit)
represented by a DVD player, a record player, a computer with a reproduction function, etc. This
eliminates the need to prepare a separate music player.
[0010]
15-04-2019
3
A third characterizing feature of the present invention is that the sound input means is a nondirectional microphone, and is attached to the top plate via a vibration reducing member.
[0011]
According to the third aspect of the present invention, in addition to the above-described effects
of the first or second aspect of the present invention can be realized, the omnidirectional
microphone collects voices from a wide area. Sounds can be played by each of the processes
described above.
And it becomes possible to prevent generation | occurrence | production of howling and noise by
transmitting the vibration of a top plate to a microphone by a vibration relaxation member
beforehand.
[0012]
A fourth characterizing feature of the present invention resides in the provision of the howling
suppression means.
[0013]
According to the fourth feature configuration of the present invention, in addition to the abovementioned operation and effect according to any one of the first to third feature configurations
of the present invention being able to be realized, the volume of reproduced sound due to top
board vibration is increased. Even if the setting is made, it is possible to suppress the howling
due to the short path of the sound from the top plate to the microphone by the howling
suppressing means.
Therefore, it is possible to hear information more reliably with loud sound.
[0014]
According to a fifth characterizing feature of the present invention, the top plate is formed at the
outer edge thereof with a recess into which a person can enter in a plan view.
15-04-2019
4
[0015]
According to the fifth aspect of the present invention, in addition to the above-described effects
of the first to fourth features of the present invention can be obtained, the recessed portion is
provided, A seated person can approach the center side of the top even a little, and it becomes
possible to more surely hear the reproduced sound with good straightness.
[0016]
Embodiments of the present invention will be described below based on the drawings.
In the drawings, the parts denoted by the same reference numerals as the conventional example
indicate the same or corresponding parts.
[0017]
1 and 2 show an embodiment of a table according to the present invention, and this table T is
configured to include a top 1 and legs 2 for supporting the top 1, and further, a plurality of
tables Microphones (an example of sound input means) 3, reproduction amplifiers 4 for receiving
and reproducing sound signals from the microphones 3, and signals from the reproduction
amplifiers 4 in the thickness direction of the top plate 1 There are provided vibration means 5
for converting the vibration into a continuous vibration and transmitting it to the top plate 1 so
that the top plate 1 becomes a diaphragm of a speaker.
And in the said embodiment, as an example, the state which is provided with two or more at
intervals in the tea room is mentioned as an example, and is demonstrated.
[0018]
The top plate 1 is formed of a wooden circular plate of a predetermined thickness.
A plurality of persons can be seated on the outer peripheral portion, and the microphones 3 are
15-04-2019
5
attached at locations corresponding to the respective seating positions.
Further, the reproduction amplifier 4 and the vibration means 5 are attached to the center back
surface side of the top plate 1.
[0019]
The microphone 3 is a non-directional microphone, and as shown in FIG. 3, is mounted in the
installation hole 1 a of the top plate 1 via the vibration reducing member 6. The vibration
reducing member 6 is preferably one having a high degree of flexibility, and examples thereof
include various foams, rubbers, cloths, and strings. Further, the upper end portion of the
microphone 3 is housed in the installation hole 1a so as to be at a position slightly lower than the
upper surface of the top plate 1. Furthermore, the opening of the installation hole 1a is made of
sound. A cap 7 configured of a perforated plate which allows passage is detachably provided. The
microphone 3 is electrically connected to the amplifier 4. Therefore, sound such as conversation
on the table 1 can be collected in a wide range by the microphone 3 and input to the amplifier 4.
Moreover, since it does not protrude on the top plate 1, it is hard to produce the disorder |
damage | failure said to catch on a top plate. In addition, since a nondirectional microphone is
used, even if a person sits at a position slightly offset from the sitting position, the voice can be
received sufficiently.
[0020]
As shown in FIG. 2, the reproduction amplifier 4 includes a preamplifier unit and a power
amplifier unit, and the preamplifier unit is a tone control unit (an example of howling
suppression means that performs equalizer processing, howling suppression processing, etc.) )
Has 4a. Further, the preamplifier unit is provided with a volume control unit 4b for adjusting the
output volume. As in the embodiment, in the environment such as a cafe room, there are dark
noises such as human voices at other tables, sounds from tea containers and spoons, sounds
from air conditioners, etc. It may be difficult to hear the voice of the person who was present at
the table. Even in such a situation, by slightly expanding the human voice, it becomes possible to
clearly hear without feeling unnaturalness. Incidentally, since background noise is also input
from the microphone, the tone controller 4a filters sounds other than the frequency range of
human speech (100 to 8000 Hz) or conversely, sounds in the frequency range of human speech
Processing such as amplification may be performed. In addition, regarding howling suppression
processing, the center frequency of howling changes according to the installation environment of
15-04-2019
6
the table, but for example, a frequency range that starts rising by feedback at the initial stage of
howling is detected to reduce sound in that frequency range. It becomes possible to aim at
howling suppression by methods, such as.
[0021]
The excitation means 5 uses as a drive source a piezoelectric element having a function of
directly converting an electric signal from the reproduction amplifier 4 into mechanical energy,
and applies the piezoelectric element to the top plate 1 for resonance. You can make it sound by
making it Therefore, a so-called “flat panel speaker” is configured by the vibration means 5
and the top plate 1. This type of speaker has better sound straightness compared to a speaker of
the type in which a conical cone is vibrated by a voice coil, and as shown in FIG. 4, a region with
a high sound pressure level right above the diaphragm. It is easy to do.
[0022]
According to the table T of the present embodiment, even if the voice of a seated person is
difficult to hear due to background noise, the voice is input from the microphone, passes through
the reproduction amplifier 4, is converted to vibration by the vibration means 5, and It is a
speaker which made the whole board 1 a diaphragm, and it can be well transmitted to the person
in the vicinity of the table, and can talk comfortably without making a loud voice. In addition,
since those sounds are hard to be transmitted to the other tables, they do not impair the
conversation on the other tables. Further, when the input signal is music, even when listening to
different music at each table, they do not interfere with each other, so that they can be enjoyed
without providing a partition or the like.
[0023]
Another Embodiment Another embodiment will be described below.
[0024]
<1> The said table T is not restricted to the table of the cafeteria demonstrated by previous
embodiment, It can install in every location and can exhibit an effect, For example, a meeting
room, a meeting room, a cafeteria, etc. It can be used in a wide range of restaurants, libraries, etc.
15-04-2019
7
Further, the sound signal input to the excitation means 5 is not limited to that from the
microphone described in the previous embodiment, and for example, a cassette player, a CD
player, a DVD player, a record player, a computer with a reproduction function, a radio , Or may
be from a music player such as a television, that is, as the sound input means, not only the
microphone but also each music player described above may be used. Including them, they are
collectively called sound input means. <2> The table T is not limited to the one provided with the
disk-shaped top plate 1 described in the previous embodiment, and may be, for example, a
rectangular shape, an elliptical shape, or an annular shape. Further, as shown in FIG. 5, a
recessed portion 8 may be formed in the outer edge portion of the top plate 1 so that a person
can enter in plan view. In this case, the seated person is on the center side of the top plate 1.
Since the user can hear the sound at the position where he got near, he will be able to listen in a
better condition by putting himself in the high straight sound area of the flat panel speaker. (3)
As described in the previous embodiment, the vibration applying unit 5 is not limited to one
provided at the center of the back surface of the top 1, and may be provided, for example, at a
plurality of places. . Moreover, you may attach to the surface side of the top plate 1. FIG.
[0025]
As mentioned above, although the reference numerals are given to make the contrast with the
drawings more convenient, the present invention is not limited to the configuration of the
attached drawings by the description. Moreover, of course in the range which does not deviate
from the summary of this invention, it can implement in a various aspect.
[0026]
Side view of the table. Side view of the table. Main part sectional view showing the mounting
condition of the microphone. Explanatory view showing sound pressure level of the speaker. Top
view showing the table according to another embodiment of the invention. Side view showing the
conventional table.
Explanation of sign
[0027]
1 top board 2 legs 3 microphone (an example of sound input means) 4a tone control section (an
15-04-2019
8
example of howling suppression means) 5 excitation means 6 vibration reducing member 8
recessed portion
15-04-2019
9
Документ
Категория
Без категории
Просмотров
0
Размер файла
19 Кб
Теги
description, jp2007167304
1/--страниц
Пожаловаться на содержимое документа