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JPS5323619

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DESCRIPTION JPS5323619
Description 1, title of the invention
Speaker device
3. Detailed Description of the Invention The present invention relates to the improvement of a
speaker device. Heretofore, various types of speaker devices have been developed and their
shapes are various. Among the speaker devices, there is a speaker device using a flat diaphragm.
Although this device has the advantage of being called a so-called small-speaker speaker and has
the advantage of low depth, it is not possible to expect superior performance, and a flat speaker
〆 □ device that can obtain better performance is desired. SUMMARY OF THE INVENTION The
present invention has been made in view of the above two problems, and it is an object of the
present invention to provide a speaker device that obtains an improvement in sexual feeling. A
practical example of the present invention will be described in detail below with reference to
FIGS. 1 and 2. That is, in FIG. 1, reference numeral 11 denotes an imaging plate made of an
insulating base material supported by the fixed portions 11 j and 112, and a coil 12 is provided
on the diaphragm 11. The coil 12 may be, for example, linear or may be provided by vapor
deposition or printing. The second magnet group -13 and the second magnet group -13 and 14
are disposed on both sides of the moving plate 11, respectively. The individual magnets are, for
example, plate-like, and the plane direction thereof is directed perpendicular to the diaphragm
11. And each magnet of the 1st magnet group 13) 23. '-174 is provided side by side so that
adjacent poles are different EndPage: one pole, one pole is directed to vibration & 11 #, the other
is fixed to the support X5 ing. In addition, each magnet of the second magnet group □) 149 to
144% is provided to correspond to each magnet 138 to ZJ 4 of the first magnet group, and a pole
directed to the diaphragm 11 is: It is disposed so as to have the same polarity as the pole of the
opposing magnet. By the way, each magnet in the second magnet group 141Cb has its width! It is
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uniformly bent in the middle of the direction to form a D-tube section. The top view of the plan
view is, for example, as shown in FIG. The above-described device is a book in which the diffuser
portion is formed of an extended part of each magnet, but as shown in FIG. 2, the diffuser portion
u 'may be detachable. That is, the same parts as in FIG. 1 will be described with the same
reference numerals. The shapes of the respective magnet groups 3Q to IJ4 and 1ggS-Z84 are
almost the same as each other, and each of them is similar to the relationship of the magnetic
poles of FIG. 1 described above. Gnnet's comrades are made to correspond.
A diffuser 1g 'is provided on the end of each of the magnets 18Q to 184 of the magnet group 1g,
that is, on the side opposite to the diaphragm 11. This diffuser portion is suitable for the flat
plate support 19. A plurality of plates 20Q to 204 fixed while maintaining a proper inclination
are arranged side by side. The plurality of plates 20Q to 204 correspond to the respective
magnets 18Q-%-184 of the second magnet group U, and uniformly bend the extension surfaces
of the respective magnets 180 to 111 at an appropriate angle. Yes, it corresponds to. The
support 19 also serves as a yoke between the magnets, and is provided with a large number of
openings. Therefore, when viewed from the front, it becomes as shown in FIG. 2 (b). According to
the speaker device of the present invention configured as described above, since the mug kit is
used as a radiating part of the sound wave as it is, no special surface horn is required. Further,
since the diffuser portion is provided, the directivity characteristic can be improved. Also,
according to the embodiment shown in FIG. 1, the price is low because the gaunet and the plate
member constituting the diffuser are integrated, and the diffuser portion is integrally finished
during assembly. . Since the plates of the gnet and the diffuser are integrally made, the
dimensional ratio can be made accurate. Further, in the embodiment shown in FIG. 2, since the
diffuser portion can be attached and detached, it can be used according to the purpose of use.
Furthermore, there is no need to use a screw or the like for attaching and detaching the diffuser,
and can be held by magnetic force. In addition, since the support of the diffuser portion also
serves as the yoke, the magnetic efficiency is significantly improved. By providing the diffuser
portion as described above, the performance of the speaker device, particularly the finger
characteristics in the high sound range, is improved. Among them, the external shape seen from
the front of the diffuser section is a polygon such as a square or a circle to improve not only the
directivity characteristic in the horizontal direction but also the directivity characteristic in the
vertical or diagonal direction according to the purpose. It is also possible. As described above, the
present invention can provide a speaker device that achieves further performance improvement.
1. Brief description of the drawings Fig. 1 is an explanatory view of the basic configuration
showing one embodiment of the speaker attachment of the present invention. L) is a sectional
view, FIG. 6) is a plan view, FIG. 2 is an explanatory view of a basic configuration showing
another embodiment of the speaker apparatus of the present invention, and FIG. It is a top view.
I..d motion plate, 12: coil, 13N14,... Applicants Attorney Attorney Takehiko Suzue EndPage: 2
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