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JPS52170033

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DESCRIPTION JPS52170033
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 (b) shows the front view of the conventional
speaker device, FIG. 2 (a) shows a cross sectional view and a rear view taken along the line A-A,
and FIG. FIG. 3 is a front view of the speaker apparatus according to an embodiment of the
present invention, FIG. 3 is a front view of the speaker apparatus according to an embodiment of
the present invention, a sectional view and a rear view taken along the line B-B, and FIG. It is a
figure for demonstrating relation and operation. 10
ииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииииии Corn section.
DETAILED DESCRIPTION OF THE INVENTION The speaker device according to the invention, 4 $
for the construction of the speaker grille installed in front of the speaker))---'70' 322, forerunner
speaker] emitted sound pressure In the conventional Nubica apparatus, the purpose is to pass the
speaker grille through the loudspeaker holes in front of the speaker grille. FIGS. 1A to 1C, which
will be described together with FIG. 2, show the structure of the speaker grille, and FIG. 1B shows
the relationship between the speaker grille and the speaker. In FIG. 1K, a speaker grill 1F19 is a
plastic molded product, and as shown in FIG. 1A, a large number of loudspeaker holes 2 are
provided at predetermined intervals. In this case, as shown in FIG. 1, the inside of the vocal hole
2 is not visible as shown in FIG. A wall 8 having a similar shape to the discharge hole 2 is
integrally provided corresponding to each discharge hole 2 at a predetermined distance from 2.
In this case, the number-3 is connected to the inner surface of the speaker grille 1) by the
integrated KII tested lip 4 and is made to have a predetermined distance from the vocal hole 2 in
the dark. As is clear from FIG. 1, the end of the speaker grille 1 and the end face 4 of the speaker
grille 1 between the above-mentioned "S" and the above-mentioned "S" are flat. In the case of an
ear, as shown in FIG. 2, the sound pressure (strong air pressure 1) due to the sound vibration
emitted from the cone portion 6 of the speaker located behind the speaker grill 1 is the position
of the speaker grill 1 as shown by the arrow. In the direction of the wall, the above-mentioned
wall 3, the speaker grille 1, and the flat shape of the lip 4)), recording pressure directly to the
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1
speaker grille 1! Also, it is said that this is repelled and returns to the cone dl15 of the abovementioned speaker, which distorts the sound pressure and the cone vibration emitted later and
reduces the sound efficiency. The present invention is intended to eliminate the above-mentioned
conventional drawbacks, and is intended to suppress the above-mentioned conventional
phenomenon, and let the sound emitted from the speaker pass through the front of the speaker
grille without distortion. In the following home SO- * examples: -1) Ite all, both 411 and KI! In the
figure 0, 10 is a speaker grille, 11 is a large number of vocal holes provided in the square bea
grill 10, 12 are a predetermined distance in the threshold of one vocal hole 11 behind each of
the above vocal holes 11 In the nine walls provided, the inside can not be seen (and also inside
(in this case, provided in order to prevent foreign matter from entering, in this case)), each wall is
brown on the inner surface of the speaker grille 1o It is connected by a rib 13 integrally provided
at each of the voice holes 11 and integrally formed with the speaker grille 10.
Here, the lip 13 is provided in one direction (lateral direction in the drawing). A second lip 14 is
integrally formed on the inner surface of the speaker grille 100 and between the vocal holes 11
and has a triangular cross-sectional shape, and as shown in FIG. It is formed. The shape of the
second lip 14 of the gauze may be a triangular cross-section. With the above configuration, as
indicated by the fourth WJK, in the case of the arrow 16, the sound pressure emitted from the
speaker O cone portion 115 located behind the speaker grille 10 is inclined on the slope of the
second lip 14 and the cone portion 16 is Directly into the vocal hole 11 without being reflected
in, spi party 6-ka! There is no loss in the front of the rill 10, thus adversely affecting the cone 16
of the speaker, and it does not distort the cone vibration during the sound pressure that is
emitted later. Furthermore, the edge of the wall 12 may be provided with a radius], and by
providing the radius at the end of the Ij-piece 13 supporting the wall 12, the plane perpendicular
to the sound pressure traveling direction may be reduced. The effect can be further improved.
The arrow 17 indicates the sound pressure traveling direction in this case, and the sound
pressure in the radius portion of the wall 12 directly enters the discharge hole 11 and as
described above, according to the present invention, it is inward of one pea grill. And the
distortion of the sound can be reduced by providing a lip having each section voice hole 0IIIIK
slope, and further, the bell serving as the shield and the lip supporting the bell are provided with
a rounded surface to reduce the plane. The above effect can be further promoted.
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