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DESCRIPTION JP2007228401

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DESCRIPTION JP2007228401
An acoustic lighting device is provided in which a radiation range of sound and a radiation range
of illumination light move in conjunction with each other. SOLUTION: A modulation unit 8
amplitude-modulates a carrier wave of an ultrasonic band with audio sound to generate a
modulation signal, an amplification unit 9 amplifying the modulation signal, and a parametric
speaker 1 driven by the amplification modulation signal. The parametric speaker 1 and the
spotlight 2 are directed such that the superradiance acoustic part, the spotlight 2 emitting
illumination light in a certain range, and the audio radiation range of the parametric speaker 1
and the irradiation range of the spotlight 2 overlap. It mounted and the rotation base 3 which
rotates the site | part which mounted this parametric speaker 1 and the spotlight 2 was provided.
[Selected figure] Figure 1
Acoustic lighting device
[0001]
The present invention relates to an acoustic lighting device that moves the sound emission range
of a parametric speaker and the irradiation range of a spotlight.
[0002]
In conventional sound and lighting devices, the radiated sound of a parametric speaker is, for
example, reflected by an elliptical reflector and amplified to a designated range, and a fixedly
installed spotlight and a sensor are combined to provide voice guidance according to human
movement. There are some that perform guidance or warning by spotlights.
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In such a device, the sound is emitted toward the range defined by the reflecting surface of the
elliptical reflector and the fixed position of the parametric speaker, and the illumination light by
the spotlight is also illuminated in the limited range. For example, as a conventional device, an
audible range is set in the vicinity of the work displayed in the art museum, and a warning
message indicating that the work is prohibited is given, etc. There are some that give
explanations by voice. This device illuminates a preset audible range as well as the audible range
to the floor surface with a lighting device such as a spotlight and visually guides the person
watching the work the range where the explanation can be heard. Also, as described above, when
the viewer gets too close to the work, the ultrasonic sensor detects the human body, and in
addition to the message constantly flowing, the spotlight of the color giving attention is emitted
(for example, , Patent Document 1).
[0003]
JP-A-11-27774 (page 4, FIGS. 5 and 6)
[0004]
Since the conventional sound and lighting device is configured as described above, when
changing the audible range of the sound from the parametric speaker, the audible range is
limited by the position where the elliptical reflector and the parametric speaker are installed, and
the audible sound is audible. For example, parametric speakers and spotlights have to be
provided at a plurality of places in order to move the range and the illumination range of the
illumination in accordance with human behavior.
Also, since the spotlight is generally installed by hanging from a ceiling or fixed to a wall, it is
difficult to change the direction of the parametric speaker and the direction of the spotlight in
conjunction with each other. There has been a problem that it is difficult to obtain the visual /
acoustic effect caused by the movement of the light irradiation range in conjunction.
[0005]
The present invention has been made to solve the problems as described above, and it is an
object of the present invention to obtain an acoustic lighting device in which a radiation range of
sound and a radiation range of illumination light move in conjunction with each other.
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[0006]
The acoustic lighting device according to the present invention amplitude-modulates the carrier
wave in the ultrasonic band with audible sound to generate a modulated signal, and drives the
parametric speaker using the modulated signal to make constant the audible sound with
ultrasonic waves as the carrier wave. The parametric speaker and the spotlight are mounted so
that the superradiance acoustic means emitting in the range, the spotlight emitting illumination
light in a certain range, and the audio emission range of the parametric speaker and the
illumination range of the spotlight overlap And a pivot base for pivoting a portion on which the
parametric speaker and the spotlight are mounted.
[0007]
According to the present invention, the parametric speaker and the spotlight are directed in the
direction in which the sound emission range of the parametric speaker and the irradiation range
of the spotlight overlap, and the portion on which these are mounted is rotated. There is an effect
that the area illuminated by the illumination light can be simultaneously moved in the same
direction.
[0008]
Hereinafter, an embodiment of the present invention will be described.
Embodiment 1
FIG. 1 is a block diagram showing a configuration of an acoustic lighting device according to
Embodiment 1 of the present invention.
The illustrated device is equipped with a parametric speaker 1 emitting ultrasonic waves in a
predetermined direction, a spotlight 2 emitting illumination light in a predetermined direction,
the parametric speaker 1 and the spotlight 2 and rotating horizontally and vertically. It has a
rotating table 3 that moves. In addition, an operation unit 4 for setting an audio output operation
from the parametric speaker 1, a lighting operation of the spotlight 2 and an operation of the
rotary table 3, an operation of the rotary unit 3 according to an operation performed on the
operation unit 4; The control unit 5 that controls the operation of the reproduction unit 7 and the
illumination power supply unit 6 described later, and the illumination power supply unit 6 that
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supplies lighting power to the spotlight 2 according to the control of the control unit 5.
Alternatively, the reproduction unit 7 generates an audio signal indicating an audible voice such
as a voice message or music from data stored in a memory or the like provided by itself, an
ultrasonic signal generated by the audio signal inputted from the reproduction unit 7 The
modulation unit 8 that modulates and the amplification unit 9 that amplifies the modulation
signal output from the modulation unit 8 and drives the parametric speaker 1 are provided. The
above-mentioned reproduction unit 7, modulation unit 8, amplification unit 9, and parametric
speaker 1 constitute a superdirective acoustic unit that emits sound that can be heard only in a
limited range using an ultrasonic wave as a carrier wave.
[0009]
FIG. 2 is an explanatory view showing an outline configuration of the acoustic lighting device
according to the first embodiment. The same reference numerals are used for the same parts as
those shown in FIG. 1, and the description thereof is omitted. This figure shows an example of the
appearance of the turntable 3. The pivot base 3 includes a mount member 3a for mounting the
parametric speaker 1 and the spotlight 2, a main body 3b for driving rotation or swing operation
of the mount member 3a, an arm-like support member 3c for supporting the mount member 3a,
and a main body A pedestal 3d is provided for mounting and fixing 3b to a floor surface or the
like.
[0010]
The pivot base 3 shown in FIG. 2 has the parametric speaker 1 and the spotlight 2 installed /
fixed on the upper surface of the mount member 3a, and the mount member 3a can be pivoted
from below to the side surface of the main body 3b by the support member 3c. Attached to The
support member 3c is attached to, for example, two oppositely disposed side surfaces of the main
body 3b so as to extend upward, and pivots about the illustrated BB 'axis, and is mounted on the
mount member 3a. The ultrasonic radiation direction 1 and the irradiation direction of the
spotlight 2 are configured to move in the vertical direction of the acoustic illumination device. An
upwardly extending cylindrical portion is provided at a central portion of the upper surface of
the pedestal 3d, and the upper end portion of the cylindrical portion is inserted into the inside of
the main body 3b from the bottom portion of the main body 3b to rotatably support the main
body 3b. The main body 3b itself rotates in the horizontal direction about the AA 'axis with
respect to the pedestal 3d fixed to the floor surface or the like.
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[0011]
The radiation surface of the parametric speaker 1 and the exit surface of the spotlight 2 are
directed substantially in the same direction so that the audible range of sound and the irradiation
range of the illumination light overlap on the mount member 3a. And is mounted. Further, the
spotlight 2 may be provided with a lens for adjusting the spread angle of the emitted light, and
the audible range of the sound emitted from the parametric speaker 1 may be aligned with the
irradiation range of the spotlight 2. Note that the direction of the parametric speaker 1 and the
direction of the spotlight 2 are not limited to the same direction as described above, and may be
installed on the mount member 3a in any direction in which a desired sound / lighting effect can
be obtained. Good.
[0012]
FIG. 3 is an explanatory view showing a schematic configuration of the pivot base according to
the first embodiment. The same reference numerals as in FIG. 2 denote the same parts as in FIG.
As described above, the rotary table 3 is configured to perform horizontal rotation about the AA
'axis in FIG. 2 and vertical rotation about the BB' axis in FIG. Inside the main body 3b, a vertical
drive unit 3e serving as a power source for performing rotation about the BB ′ axis, and a
horizontal drive unit 3f serving as a power source for performing rotation about the AA ′ axis Is
equipped. The vertical drive unit 3e has a mechanism for rotating around the vicinity of the
lower end portion of the support member 3c. Specifically, the vertical drive 3e provided inside
the main body 3b has a pivot shaft (not shown) for outputting a rotational drive force generated
by the main body projected from both left and right side surfaces of the main body 3b in FIG. The
lower end portion of the support member 3c is attached and fixed to the protruding portion of
the pivot shaft portion. As described above, the support members 3c are attached and fixed to
the portions of the vertical drive portions 3e that are projected outward from the left and right
side surfaces of the main body 3b as described above. The upper end portion of each support
member 3c is fixed to the lower surface of the mount member 3a so as to support the mount
member 3a from below. The horizontal drive unit 3 f has a mechanism for horizontally rotating
the main body 3 b itself with respect to the fixed pedestal 3 d. The horizontal drive 3f provided
inside the main body 3b applies a driving force to rotate the cylindrical portion of the pedestal
3d inserted from the bottom of the main body 3b to the inside, and as a result, the main body 3b
itself is It is configured to rotate. Further, the vertical drive unit 3 e and the horizontal drive unit
3 f are connected / configured such that the drive operation of each is controlled by the control
unit 5. To 180 ° / sec. As described above, the driving force for rotating each part of the
rotating base 3 is provided at the speed of.
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[0013]
Next, the operation will be described. The operation unit 4 performs ON / OFF operation of the
main power source of the acoustic lighting device, selection / setting of sound radiated from the
parametric speaker 1, lighting ON / OFF operation of the spotlight 2, and automatic control of
rotation operation of the turntable 3 When the main power is turned on by the operator and
each setting is performed, a control signal indicating the setting is output to the control unit 5. In
addition, when the above switching operation is performed to manually control the pivoting
operation of the pivoting table 3, a control signal corresponding to the manual operation of the
operator is output from the operation unit 4 to the control unit 5. Ru. When the automatic
control is set in the above switching operation, for example, before operating the turntable 3, the
control unit 5 controls the turntable 3 based on the content set using the operation unit 4.
Control the operation of
[0014]
The control unit 5 controls the operation of the reproduction unit 7 according to the control
signal input from the operation unit 4. The reproduction unit 7 selects, for example, among data
indicating a plurality of voice messages stored in the internal memory, one set using the
operation unit 4 based on the control of the control unit 5, and uses the data To generate an
audio signal capable of audio reproduction. The modulation unit 8 amplitude-modulates, for
example, a signal indicating a carrier wave of an ultrasonic wave band generated by itself with an
audio signal input from the reproduction unit 7, and generates a modulation signal representing
an audible sound having an ultrasonic wave as a carrier wave. The amplification unit 9 amplifies
the modulation signal input from the modulation unit 8 to drive the parametric speaker 1. The
parametric speaker 1 generates an ultrasonic wave that self-demodulates to an audible sound
when propagating through the air based on the modulation signal, that is, emits an audible sound
that diffuses the ultrasonic wave as a carrier wave into a narrow beam-like area.
[0015]
Further, the control unit 5 controls the operation of the illumination power supply unit 6 in
accordance with the control signal from the operation unit 4. The lighting power supply unit 6
turns on / off the lighting power supply power supplied to the spotlight 2 according to the
control of the control unit 5 and controls the lighting / lighting off operation of the spotlight 2.
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Further, the control unit 5 controls the operation of the pivot base 3 according to the control
signal from the operation unit 4 and controls the emission direction of the sound output from the
parametric speaker 1 and the spotlight 2 in detail as described later. Change the illumination
direction of the illumination light. The volume of the sound emitted from the parametric speaker
1 and the illuminance of the spotlight 2 are set so that desired volume and brightness can be
obtained at any position.
[0016]
FIG. 4 is an explanatory view showing the operation of the acoustic lighting device according to
the first embodiment. The same parts as those shown in FIGS. 1 to 3 are denoted by the same
reference numerals, and the description thereof is omitted. This figure shows a state where
superdirective sound and illumination light are emitted from the installed rotation base 3, and as
shown in the figure, the emission range 21 of the sound and the irradiation range 22 of the
illumination light The above-mentioned voice and illumination light are output so that they
overlap in the viewing area 23 where the viewer exists. As described above, the control unit 5
controls the pivoting operation of the pivot base 3 according to the control signal of the
operation unit 4, and the drive of the vertical drive unit 3e described above is controlled and
mounted on both side surfaces of the pivot base 3. When each supporting member 3c is rotated
in the front-rear direction with respect to the front of the main body 3b, the direction in which
the radiation surface of the parametric speaker 1 mounted on the mount member 3a faces and
the direction in which the emission surface of the spotlight 2 faces The direction of movement
changes up and down, and the sound radiation direction and the illumination light irradiation
direction move in the direction perpendicular to the main body 3b. Further, the drive of the
horizontal drive unit 3f described above is controlled, and the main body 3b itself rotates in the
horizontal direction, and the sound radiation direction and the illumination light irradiation
direction move in the horizontal direction.
[0017]
When the main body 3b of the rotation base 3 rotates in the horizontal direction, the mount
member 3a also rotates in the horizontal direction, so the radiation range 21 and the irradiation
range 22 move in the vertical direction as well as in the horizontal direction. At the same time,
the orientation of the parametric speaker 1 and the orientation of the spotlight 2 mounted on the
same move uniformly. That is, the audio from the parametric speaker 1 can be heard and the
viewing area 23 illuminated by the spotlight 2 is moved. For example, as shown in FIG. 4, in the
case where the rotary table 3 of the acoustic lighting device is installed at a high place and voice
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and illumination light are emitted obliquely downward, the control unit 5 is perpendicular as
shown in FIG. By controlling the drive unit 3e, the support member 3c is rotated forward with
respect to the main body 3b, and the mount member 3a is maintained in an inclined posture
obliquely above the main body 3b. Thus, the mount member 3a is inclined toward the front of
the main body 3b, and the radiation surface of the parametric speaker 1 mounted on the mount
member 3a and the emission surface of the spotlight 2 both face obliquely downward, as
illustrated Thus, the radiation area 21 extending obliquely downward and the irradiation area 22
overlap each other to create the listening area 23.
[0018]
When the control unit 5 controls the vertical drive unit 3e to maintain the position of the support
member 3c and controls the horizontal drive unit 3f to rotate the main body 3b in the horizontal
direction, the listening area 23 becomes as shown in FIG. Move in the direction of arrow 24
shown in. At this time, since the vertical components of the emitting direction of the voice and
the illumination light are kept constant, the viewing area 23 moves so as to trace along the
circumference centering on the rotating table 3. The control unit 5 controls the operations of the
vertical drive unit 3 e and the horizontal drive unit 3 f according to the operation performed on
the operation unit 4, and by performing appropriate amounts of vertical drive and horizontal
drive at the same time, various listening areas 23 are provided. Can be moved in any direction.
The rotary table 3 exemplified in the first embodiment can also be operated continuously for one
rotation or more in the horizontal direction from its structure, for example, by continuously
rotating at high speed, the sound and the illumination light are interlocked A moving visual /
sound effect is obtained, and it is possible to give an unprecedented effect. In addition, the
rotation base 3 is not limited to the configuration exemplified here, and may be configured to be
able to be directed to any of 360 ° in all directions, up and down, left and right. Furthermore,
over 360 ° in all directions. In other words, the structure may be such that continuous rotation
is possible, so that the rotation can be made continuous without termination.
[0019]
As described above, according to the first embodiment, the rotary base 3 on which the
parametric speaker 1 and the spotlight 2 that emit sound using ultrasonic waves as a carrier
wave is mounted, and rotation is performed according to the operation performed on the
operation unit 4 The control unit 5 for controlling the turning operation of the moving table 3 is
provided, and the turning table 3 is configured to turn the mount member 3a on which the
parametric speaker 1 and the spotlight 2 are mounted according to the control of the control unit
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5 Since the emission range of the sound and the irradiation range of the illumination light are
moved by the above, there is an effect that the sound and the illumination light can be
simultaneously moved in the same direction. In addition, since the control unit 5 controls and
drives the pivot base 3 in accordance with the setting / operation performed on the operation
unit 4, an effect that sound and illumination light can be emitted in a desired direction is
obtained. is there.
[0020]
Second Embodiment The acoustic illumination device according to the second embodiment is
configured in the same manner as the block diagram of FIG. Here, the redundant description of
the same configuration as that described in the first embodiment will be omitted, and the
characteristic part of the acoustic lighting device according to the second embodiment will be
described. FIG. 5 is an explanatory view showing a schematic configuration of an acoustic
lighting device according to Embodiment 2 of the present invention. The same reference
numerals are used for the same or corresponding parts as those shown in FIGS. 1 to 4, and the
description thereof is omitted. The pivot base 3 of the acoustic illumination device according to
the second embodiment is a spotlight 2 at the center of the radiation surface of the parametric
speaker 1 that emits sound, or when the radiation surface of the parametric speaker 1 is viewed
from the front. The spotlight 2 is installed at a position where the lights overlap, and the
radiation central axis of the sound emitted from the parametric speaker 1 and the irradiation
central axis of the illumination light of the spotlight 2 are arranged to overlap and become the
same axis. . Also, the parametric speaker 1 and the spotlight 2 are arranged so that the spread
angle of the sound radiation range from the parametric speaker 1 and the spread angle of the
irradiation range of the spotlight 2 are similar. At this time, the spot light 2 is provided with a
lens for changing the spread angle of the emitted light as in the first embodiment, and the spread
angle of the sound emitted from the parametric speaker 1 and the spread angle of the irradiated
light are aligned. You may do so. The other parts are configured in the same manner as those
described in the first embodiment.
[0021]
Next, the operation will be described. The redundant description of the operation of the portion
configured in the same manner as that described in the first embodiment is omitted. FIG. 6 is an
explanatory view showing the operation of the acoustic lighting device according to the second
embodiment. The same reference numerals as in FIG. 4 denote the same or corresponding parts,
and a description thereof will be omitted. The emission range 25 indicates a range in which the
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radiation range of the sound output from the parametric speaker 1 and the irradiation range of
the illumination light from the spotlight 2 overlap each other. In the acoustic lighting device
according to the second embodiment, as described above, the spotlight 2 is installed at the
central part of the radiation surface of the parametric speaker 1 so that the radiation direction of
the sound and the radiation direction of the illumination light become the same. Because of the
provision, as shown in FIG. 6, a beam-shaped range 25 in which the sound and the illumination
light overlap from the output source is generated. In this way, by emitting the sound and the
illumination light in the same range, the viewing area 23 can be generated at a desired place, and
an audible range having a visual effect in a limited range can be generated.
[0022]
As described above, according to the second embodiment, since the spotlight 2 is placed at the
center of the radiation surface of the parametric speaker 1, the central axis when emitting sound
and the central axis of irradiation of the illumination light are completely the same. Thus, the
sound and the illumination light can be superimposed on each other without being influenced by
the distance between the sound lighting device and the viewer, and the sound can be emitted to
the position where the viewer is present.
[0023]
Third Embodiment
FIG. 7 is a block diagram showing a configuration of an acoustic lighting device in accordance
with Embodiment 3 of the present invention. The same reference numerals as in FIG. 1 denote
the same or corresponding parts, and a description thereof will be omitted. The sensors 10a and
10b are sensors separated from each other and detecting a person such as a viewer. The sensors
10 a and 10 b are connected to input their detection output signals to the control unit 5.
[0024]
Next, the operation will be described. The redundant description of the operation is omitted for
the parts configured similarly to those described in the first embodiment or the second
embodiment. FIG. 8 is an explanatory view showing the operation of the acoustic illumination
device according to the third embodiment. The same or corresponding parts as those shown in
FIG. 1 to FIG. Although FIG. 8 exemplifies the pivot base 3 of the acoustic lighting device
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according to the second embodiment, the same function and effect can be obtained even when
the pivot base 3 of the acoustic lighting device according to the first embodiment is used. be able
to. The sensors 10a and 10b are installed, for example, at a distance of about 10 m in an art
museum, a museum, an attraction facility or the like, and detect, for example, a viewer who
approaches the installation location of the sensors 10a and 10b. The sensor 10a detects the
viewers present in the detection range 26a, and the sensor 10b detects the viewers present in the
detection range 26b.
[0025]
The control unit 5 shown in FIG. 7 operates the pivot base 3 according to the detection result of
the sensor 10a or the sensor 10b, and emits voice and illumination light in the direction in which
the viewer is detected. Specifically, when one of the sensors detects the viewer and outputs a
detection signal indicating significance, the control unit 5 recognizes the sensor that has output
the detection signal indicating significance, for example, any one of the memories From among
the installation positions of each sensor stored in advance, etc., the installation position of the
sensor that has output the detection signal indicating the significance is determined, and the
detection range of the sensor, ie, the position where the viewer is detected And direct the
spotlight 2 to emit sound and illumination light. In the state shown in FIG. 8, since the sensor 10
b detects the viewer present in the detection range 26 b, the pivot base 3 rotates in the right
direction in the drawing and the viewer watches the listening range 23. The direction of emission
of sound and the direction of illumination of the illumination light are moved to the location
where the light source is located, ie, the detection range 26b of the sensor 10b. As described
above, the control unit 5 controls the pivot base 3 according to the detection results of the
sensors 10a and 10b, and automatically moves the radiation range of the sound of the
parametric speaker 1 and the radiation range of the spotlight 2. Further, in the acoustic
illumination device according to the third embodiment, a large number of sensors similar to
those described above are connected to the control unit 5, and these sensors are installed at
appropriate intervals to allow the viewer to move. It is also possible to move the radiation range
of the sound and the illumination range of the illumination light so as to track. As described
above, when sound emission and illumination light irradiation are performed according to the
detection result of the human detection sensor, in addition to the use for rendering effects such
as the attraction as described above, it approaches a certain limited place Since it is possible to
provide voice guidance and lighting for prompting a person, it is possible to appropriately
provide notification of a dangerous place and guidance for realizing barrier-free.
[0026]
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As described above, according to the third embodiment, the sensor 10a and the sensor 10b are
spaced apart and installed, and the control unit 5 controls the pivot base 3 based on the
detection signals of these sensors to Since the spotlight 2 and the viewer are directed to the
detection range of the sensor that has detected the viewer, there is an effect that voice and
illumination light can be emitted toward the place where the viewer is actually present. In
addition, since the rotary table 3 is rotated according to the detection signals of a plurality of
sensors installed apart from each other to move the radiation range of the sound and the
irradiation range of the illumination light, within a wide range The emission range of sound and
the irradiation range of illumination light can be automatically moved, and one acoustic
illumination device can cover a wide range.
[0027]
In addition, the acoustic illumination device according to the first embodiment and the second
embodiment that operates according to the signal output from the operation unit 4 based on the
manual operation, and the acoustic illumination according to the third embodiment that operates
according to the detection signal of the sensor By installing the devices at multiple locations and
moving / turning the voice and the illumination light by manual operation, and moving / turning
the voice and the illumination light automatically performed according to the output signals from
sensors etc. It is also possible to configure an audio installation that produces unprecedented
audiovisual effects.
[0028]
It is a block diagram which shows the structure of the acoustic illuminating device by
Embodiment 1 of this invention.
FIG. 1 is an explanatory view showing a schematic configuration of an acoustic lighting device
according to a first embodiment. FIG. 2 is an explanatory view showing a schematic configuration
of a pivot base according to Embodiment 1; FIG. 6 is an explanatory view showing an operation
of the acoustic lighting device according to Embodiment 1. It is explanatory drawing which
shows schematic structure of the acoustic illuminating device by Embodiment 2 of this invention.
FIG. 8 is an explanatory view showing the operation of the acoustic lighting device in accordance
with Embodiment 2. It is a block diagram which shows the structure of the acoustic illuminating
device by Embodiment 3 of this invention. FIG. 13 is an explanatory drawing showing the
operation of the acoustic lighting device in accordance with Embodiment 3.
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Explanation of sign
[0029]
DESCRIPTION OF SYMBOLS 1 parametric speaker, 2 spotlights, 3 rotation base, 3a mount
member, 3b main body, 3c support member, 3d pedestal, 3e vertical drive unit, 3f horizontal
drive unit, 4 operation unit, 5 control unit, 6 illumination power supply unit , 7 reproduction unit,
8 modulation unit, 9 amplification unit, 10a, 10b sensor.
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