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JPS53158233

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DESCRIPTION JPS53158233
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view and a plan view of an essential
part showing an example of a conventional embedded speaker, and FIG. 3 is a sectional view of
the essential part of the embedded speaker according to the present invention. It is a figure and a
top view. 1 ..... hanging bolts, 2 ...... speaker box, 4 ...... speaker, 7 ...... front panel, 9 ...... Batsufu
Figure 2 a 3 figures
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to embedded
speaker snow making used by being embedded in a ceiling or a wall, and more particularly to an
embedded speaker device NK having directivity. The embedded speaker device is used in a hall,
an auditorium or the like, and is a book having an effect that the use of the speaker can be
performed without losing the effective use of space and the appearance because the speaker
does not protrude indoors. . Such an embedded speaker device is configured as shown in FIG. 1
and FIG. 1 and 2 show an embedded spy mounted on a ceiling (a cross-sectional view and a plan
view showing an example of a 1+ power device and a speaker box (2) is suspended by a
suspension bolt (1) It is done. And the baffle board (3) is being fixed to the lower surface of this
speaker box (2), and the speaker (4) is attached to this baffle board (3). In addition, a hole + 61K
provided in the ceiling facing the speaker box (2) is provided with a front panel (7) on which a
net is stretched. However, the directivity of the embedded speaker device according to the above
configuration is always perpendicular to the mounting surface. In this case, since the ceiling and
the floor and the wall and the wall are formed in parallel planes, the reflection of sound becomes
large and an echo phenomenon occurs. Further, in the above-described configuration, the viewer
hears the sound from the upper side or the side, and has various disadvantages such as an
offensive feeling in the loud-speaking to a special event such as a lecture or a show. Therefore, an
object according to the present invention is to provide an embedded speaker having directivity
different from that of the mounting surface. Hereinafter, the embedded (2) speaker according to
the present invention will be described in detail using the drawings. 3 and 4 show a cross-
03-05-2019
1
sectional view and a plan view of an essential part showing an embodiment of the embedded
speaker according to the present invention, and the same parts as in FIG. 1 use the same
symbols. In the figure, the difference with FIG. 1 is that a baffle plate (9) is provided on the lower
surface of the speaker box (2), that is, one side thereof is lifted by the support plate (8) and is
inclined. The speaker (4) is fixed to 9). When the embedded speaker configured in this way is
embedded in a ceiling, for example, the baffle plate (9) for fixing the speaker (4) is inclined K, and
the directivity direction of the speaker (4) is the baffle plate It moves in the inclination direction
of (9). Therefore, in this case, the pointing direction of the loudspeaker (4) is inclined downward,
and the reflection on the floor is reduced.
Further, when the direction of the speaker (4) is the direction of the viewer, the viewer hears the
speech from the @Ij, and the discord of the loud- ness is reduced. In addition, since the pointing
direction of the speaker (4) is opposite to the pointing direction of the microphone, howling is
reduced, and (3) the loud sound can be increased accordingly. In addition, in the Example
mentioned above, although only the case where it embed | buried in the ceiling was
demonstrated, this invention is not limited to this. As described above, since the embedded
speaker device according to the present invention is inclined with respect to the baffle plate t
speaker box provided on the MiJ surface of the speaker box and the speaker is fixed to the
inclined baffle plate, No sound is emitted in the direction perpendicular to the mounting surface,
and accordingly, the reflection of sound between the opposing parallel surfaces is reduced to
prevent the echo phenomenon. Since the sound can be produced in the opposite direction to the
microphone, howling is reduced accordingly and the loud sound can be increased. Furthermore,
by emitting the sound of the speaker to the viewer (the first one), the viewer can hear the sound
from the help, and the sense of discord in the case of listening to the loud sound of the event is
reduced accordingly. Have various excellent effects.
03-05-2019
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