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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
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BRIEF DESCRIPTION OF THE DRAWINGS FIGS. 1a and 1b are a side view and a top view showing
a prior art example, FIGS. 2a and 2b are schematic diagrams for explaining the present invention,
and FIGS. It is a side view and a top view showing an embodiment of the invention. 1 ...... cover, 2
...... driver unit, 3 ...... horn, 4 ...... in tube, 5 ...... horn aperture, 6 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·
· · · Screw.
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a horn speaker
having a structure that enables high efficiency operation. Horn speakers are used for electronic
sirens, etc. However, depending on the application, mounting is limited when space is limited and
the performance of the speaker can not be fully exerted. FIG. 1 (a) shows a conventional horn
speaker ', wherein l is a cover and 2 is a driver unit. 3 is a horn and 4 is a middle cylinder. The
medium oil 4 is loosened by a screw or the like so as to coincide with the center (central axis 6)
at the horn opening 5. Here, the reproduction path of the sound in the horn speaker starts from
the 1087 // y ') /) 音源 sound source of the driver unit 2 as shown by the dotted line in FIG. It is
folded back at the root of the horn 3, and it takes a course as shown in FIG. 2 (twice as shown by
bl and also after being released from the horn opening 5 to the outside). In the above, the horn
speaker operates with high efficiency in proportion to the length of the distance from the sound
source to the horn opening 5. From this point of view FIG. 1 (when looking at the conventional
structure of al, the middle oil 4 is fixed at the center of the horn opening 5 and the distance is
naturally determined in relation to the cover 1 so It was difficult to The present invention is an
hrv made to eliminate the above drawbacks, and a middle cylinder! By displacing at a position
lower than the center of the horn opening, the horn speaker having a structure in which the
distance from the sound source to the horn opening is substantially increased is provided. The
embodiments of the present invention will be described below with reference to the drawings.
FIG. 3 + a + is a cross-sectional view of the horn speaker according to the embodiment of the
present invention. The same parts as FIG. The middle cylinder 4 is attached at a lower position
than the central axis 6 at the horn opening 5 and is formed long without contacting the cover 1.
This can increase the substantial distance from the sound source to the horn opening. In
addition, in the case of attaching the middle cylinder 4 with a screw, the screw 7 is
conventionally disposed so as to be positioned at the apex of the three sides of the Y character as
in FIG. 1 Ftel, but in the present invention As shown in Fig. 3 (1) l, each side Ylzt has an inverted
V shape and none. Since the screw 7 is disposed at each of the shifted apexes, contact of the
screw can be prevented even if the middle cylinder 4 is shifted downward from the center. As
described above, according to the present invention, the distance from the sound source to the
horn opening can be obtained by mounting the middle cylinder at a position lower than the
center of the horn opening?
The horn speaker can be operated at high efficiency because it can be made substantially long.
Since this makes it possible to obtain a particularly high sound pressure T5), the mounting is
effective when applied to a speaker with limited space for electronic satellite 3-089 ylene.
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