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This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate,
complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or
financial decisions, should not be based on machine-translation output.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of a conventional horn
speaker, FIG. 2 is a cross-sectional view showing an embodiment of the horn speaker of the
present invention, and FIG. FIG. 4 is a perspective view of the main part in the closed state, FIG. 4
is a perspective view of the state in which the same outer joint horn is closed, and FIG. 5 is an
output sound pressure frequency characteristic chart of the same horn speaker. 11 и и и и и и и и и и и и и
и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и и Internal horn, 20 ..... folded back horn, 21 ..... external horn, 22
..... hinge, 23 ..... joint external horn.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ho / speaker
configured to change the total length and opening area of the external ho 7, and it is possible to
change the low-pass characteristics of the output phonoharmonic wave number custom-made to
be optimum for use environment At the same time, it is intended to make it possible to change
the directivity. A conventional ho / speaker is configured as shown in FIG. That is, the voice coil 6
is provided in the field section 6 constituted by the Great 2 with one pole, the magnet 2 with the
pole 3 and the top plate 4 with the pole 4 -7 и z 2 / Also, a dome-shaped diaphragm 7 is
incorporated to constitute a driver unit, to which an internal ho 78 serving as a ho / speaker is
coupled, and this is returned corresponding to the open end of the internal ho 78 A ho 79 is
provided, and an external ho 710 is provided on the outer peripheral part of these hos 8 and 9.
In the ho / speaker having such a configuration, since the ho / -especially the external ho 710
has a single pair of full length and opening area, optimum clarity can be obtained only in the use
environment under certain conditions. . Therefore, in order to obtain the Ho / speaker with high
definition in various usage environments, it is necessary to have various Ho 7 speakers in line,
and it becomes various types, which is disadvantageous to productivity and disadvantageous in
cost. It was The present invention seeks to eliminate the above-mentioned conventional
drawbacks. Hereinafter, the present invention will be described in more detail with reference to
FIGS. 2 to 5 of the drawings. First of all, in FIG. 2, reference numeral 11 is a field research unit,
and 3 is a field unit 11 having a plate 13 provided with a setter pole 12, a magnet 14 in the
shape of a hook, and an upper grate 15 in the same hook / ring. It is composed of A domeshaped diaphragm 16 is coupled onto the field portion 11, and a voice coil 18 which is
connected to the magnetic gap 17 of the field portion 11 is coupled to the dome-shaped live
plate 16. Further, an internal horn 19 also serving as a horn float is coupled onto the field
portion 11, and a folded horn 2o is disposed at a position corresponding to the opening of the
internal ho 719. The internal horn 19 and the folded horn 2o are disposed. The outer horn 21 is
provided with an external horn 21 having one end coupled to the field portion 11 at the outer
side of the outer horn 21. The open end 1ill of the external horn 21 is a joate into which a
circular base cylinder is divided into two via a cylinder 22. The exterior ho / 23 is provided in the
opening and closing self-standing. The state where the joint exterior ho / 23 is opened is shown
as a third 71 and the state where it is closed as shown in FIG. By changing the length of the
external horn, the output sound pressure frequency characteristic changes as shown in FIG. 5
due to the change of the total length.
That is, when the Joyo Do external ho 723 is closed, the low band extends as shown by the solid
line, and when the Zoyo inoto ho external 723 is opened, the low band is cut, and there are many
low frequency components in the rearing sound It can be used as a well-defined ho / speaker in
use. In addition, since the opening area also changes, the directivity also changes significantly.
Thus, since the ho / speaker of the present invention is configured, it can be used optimally in
two types of usage environments by opening and closing the external hono of the Joyoto, and
reducing the number of useful cars as the ho / speaker It is possible to mass-produce, and it is
advantageous in measuring cost reduction, and it becomes a dog of practical value.
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