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BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a
speaker incorporated in a luminaire installed on a ceiling, a wall or the like.
2. Description of the Related Art Conventionally, speakers used for broadcasting such as
emergency broadcasts in buildings are usually set independently on ceilings, walls, etc. by the
speakers alone. Also, with regard to speakers installed on so-called system ceilings,
conventionally, installation has been required to some extent because installation is performed
using a part of a line of a lighting fixture or a part of a slit of a ceiling component.
[0003] As described above, when installing in a building, the conventional speaker needs space
for installation, so space efficiency is poor and the design also has negative factors. It could have
been. The present invention has been made in view of the above problems, and the purpose of
the present invention is that the lighting apparatus itself functions as a speaker, does not require
an installation space for a single speaker, is excellent in space efficiency, and is designed It is an
object of the present invention to provide a luminaire built-in speaker which does not give a
sense of discomfort.
SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present
invention is driven by a drive unit using a reflector of a luminaire as a diaphragm.
[Operation] Since the speaker incorporating the lighting device of the present invention is driven
by the drive unit using the reflector of the lighting device as a diaphragm, the installation space
becomes unnecessary as compared with the case where a single speaker is installed, and the
appearance Since it looks like a lighting fixture, it does not give a sense of discomfort in design
Further, the reflecting plate of the lighting apparatus is near a flat plate and is partially fixed, so
that it can be vibrated well and a sound with good sound quality can be obtained.
EXAMPLES The present invention will be described by way of examples.
FIG. 1 shows a cross-sectional view of an embodiment in which a lamp L such as a straight tube
fluorescent lamp is used for two lamps arranged side by side. The reflectors 2A, 2B and 2C are
separately disposed in the longitudinal direction.
The reflection plates 2A, 2B, and 2C as a whole constitute a reflection plate portion having a
substantially U-shaped cross section.
The central reflection plate 1C is substantially flat and both ends thereof are fixed to the inner
ceiling surface of the instrument body 1 through the insulator 4.
Then, as shown in FIG. 2, drive units 3 are attached to the upper surfaces on both sides of the
center respectively, and the drive unit 3 drives the reflector 1C as a diaphragm to vibrate, and is
similar to a speaker using a flat diaphragm. It constitutes a speaker.
As the drive unit 3, an MC dynamic type full-range type so-called actuator unit is used, and a
drive signal is given through a transformer attenuator 5 attached to the outer ceiling surface of
the instrument body 1. The sound reproduced by the vibration of the reflecting plate 2C driven
by the drive unit 3 is radiated downward as shown by the arrow in FIG.
FIG. 3 shows a cross-sectional view of an embodiment in the case of being used in a dull light
luminaire, and basically the drive unit 3 is mounted on the back surface of the central reflector
2C 'in the same manner as the embodiment of FIG. The central reflector 2C ′ is mounted and
driven. An incandescent lamp is used as the lamp L, and a cylindrical reflector 2A 'is used.
Since the present invention drives the reflection plate of the lighting apparatus as a diaphragm
by the drive unit, no installation space is required as compared to the case where the speaker
alone is installed, and the appearance looks like a lighting apparatus. The effect is that there is no
sense of incongruity in design, and the reflector of the luminaire is near a flat plate and partially
fixed, so the effect of good vibration and good sound quality is obtained. There is.
Brief description of the drawings
1 is a cross-sectional view of an embodiment of the present invention.
2 is a perspective view of a reflection plate portion of an embodiment of the present invention.
3 is a cross-sectional view of another embodiment of the present invention.
Explanation of sign
1 Instrument Body 2A Reflector 2B Reflector 2C Reflector 3 Drive Unit 4 Insulator 5 Transformer
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