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DESCRIPTION JPS63290497

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DESCRIPTION JPS63290497
[0001]
TECHNICAL FIELD The present invention relates to a speaker used for audio equipment. 2.
Description of the Related Art In a speaker used in the field of audio equipment in recent years,
when listening to the sound of the speaker, it is heard directly or with the grill attached to the
front, but the sound emitted from the front of the speaker is both direct It will be heard, and
there is an increasing number of times when it is desired to suppress the noise generated by the
deafening sounds, especially in the middle and high frequency parts. A conventional speaker will
be described below with reference to the drawings. FIG. 3 shows a half turn view of the speaker
with the grille according to the conventional structure. In the figure, 1 is a frame, 2 is a ring top
plate, 3 is a ring magnet, 4 is a plate with a pole piece, 5 is a terminal, 6 is a voice coil, 7 is a
damper, 8 is cone paper, 9 is a subcone, 1 o shows a gasket and 11 shows a grille. The operation
of the conventional speaker, which is accustomed to the above stock, will be described below.
First, the voice signal amplified by the amplifier is transmitted to the voice coil 6 when the
terminal SVc is scanned. The voice coil 6 gathers between the plates collecting the magnetism
generated from the magnet and performs vertical movement @ vertically to the field according to
the left-hand rule of Fleming according to the stain flow. This motion is transmitted to the cone
paper 8 to create a sparse and dense state of air, thereby generating sound and emitting sound to
the front through the grille 11 on the front. Problems to be solved by the invention In the
speaker with the above structure, since the sound generated from the speaker is directly emitted
forward, an offensive sound is produced in the middle or high band, for example, when the
speaker axis and the reflector are close. There were times when I felt tired when listening for a
long time. In addition, those having a structure that can be easily adjusted and adjusted by
people who listen to the above problems are particularly required. The present invention is
intended to solve the problems by changing the structure of the grill portion, which is the abovementioned drawback. Solution to the problem To solve the problems above, the speaker of the
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present invention covers the front of the speaker with a grille, and an opening is provided on the
side of the grille so as to emit sound in the low band, By providing an opening at the front of the
grille, the sound emission rate of the middle and high frequency parts is changed by changing
the opening ratio of the opening. Operation With this structure, the playback sound that could
not be solved by the speaker is improved, especially in the middle and high frequency parts, and
the feeling of fatigue is reduced when listening for a long time, etc. Since the adjustment can be
made by the aperture ratio of the speaker, the speaker suitable for the listener is achieved.
EXAMPLES Examples of the present invention will be described with reference to the drawings.
FIG. 1 shows an example of use of the speaker in a state where the grill of the present invention
is attached. In the figure, 1 is a frame, 2 is a ring top plate, 3 is a ring magnet, 4 is a plate with a
pole piece, 6 is a terminal, 6 is a voice coil, 7 is a damper +, B is r-n paper, 9 is a sub cone, 10 is a
gasket, 12 is a grill body according to the present invention, 13 is an opening / closing regulator,
and 14 is an adjusting knob. FIG. 2 is a plan view of the grille front adjuster. The operation of the
speaker of the present invention configured as described above will be described below. First,
when an audio signal amplified by the amplifier is applied to the terminal 5, it is transmitted to
the voice coil 6. The voice coil 6 is gathered between the plates collecting the magnetism
generated from the magnet, and moves up and down perpendicularly to the field according to the
left-hand rule of Fleming according to the flow. This motion is transmitted to the cone paper 8 to
generate a voiced air by creating air tightness, but since the grille is on the front, the voiced
sound can not be output as it is. The sound in the low band part is emitted to the outside from
the opening 16 of the grille side part because the directional characteristic to transmission is
small. As for the voice in the middle part and the high band part, the directivity characteristic to
the transmission is large and the reduction of the voice that can hardly be emitted from the
opening part 16 of the side part is achieved, but the reduction efficiency is too large. It feels like
a speaker without high frequency part. Therefore, by providing the opening 16 as shown in the
front of the grille, part of the sound in the middle and high band can be released. Also, since
there are individual differences in the level to be released, it is possible to adjust the middle and
high band parts by adjusting the aperture ratio of the opening part 16 which can be released by
the open / close adjuster, and the low band part is generated by the speaker It becomes a
speaker that can emit as well. Effects of the Invention As described above, according to the
present invention, (1) the characteristics in the shape of the shigrill are mixed by attaching the
grille of the above structure to the reproduced sound in the speaker main body, and the control
of the middle and high frequency parts is performed. It is a good voice to hear. (2) The sound
adjustment of the middle and high frequency parts can be easily performed due to the structure.
(3) The location according to the installation place and the individual difference of the listener
becomes wide, and it becomes a speaker which can be used widely.
[0002]
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Brief description of the drawings
[0003]
FIG. 1 is a half sectional view of an essential part of a loudspeaker according to the present
invention.
FIG. 2 is a plan view seen from the front of the grille, and FIG. 3 is a half sectional view of a main
part of a speaker according to the prior art. Name of Agent Attorney Nakao Toshio Other 1-1-14-4-1-Ruff! Large L 7 '7'! 7 傳 3'-di 2 代 77 77 "sweat, L"--n '-ue'-s 117 '(, 45---H-54-□) -Bukone
f2---Gusoru double 13-I'll go over the Hunkai section! 4- so-called V 昂 / マ / / / − − − − q グ
グ グ グ グ グ グ グ N 本 1g − ヮ 伽 7 閏
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