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JP2013183372

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DESCRIPTION JP2013183372
Abstract: To provide a speaker grille capable of distributing sound from a speaker in a wellbalanced manner to a seated person seated at different seating positions. The present speaker
grill is a speaker grill 1 attached to a vehicle interior part (door trim 2) and having an opening
for directing a sound from the speaker 3 in a predetermined direction, the opening being a sound
from the speaker And a second opening 6 for directing the sound from the speaker 3 in a second
direction D2 different from the first direction D1. [Selected figure] Figure 2
スピーカグリル
[0001]
The present invention relates to a speaker grill, and more particularly, to a speaker grill capable
of distributing sound from the speaker in a well-balanced manner to a seated person sitting at
different seating positions.
[0002]
As a conventional speaker grille, what is attached to a door trim and has an opening which makes
a sound from a speaker direct in a predetermined direction is known (for example, refer to patent
documents 1).
The patent document 1 discloses a speaker grill having an opening for directing the sound from
the speaker in only one direction.
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[0003]
However, in the technique of Patent Document 1, since the opening directs the sound from the
speaker in only one direction, for example, the sound from the speaker is given to the seater
sitting in the driver's seat and the seater sitting in the front passenger seat. It can not be
distributed in a balanced manner.
[0004]
JP-A-9-51594
[0005]
The present invention is made in view of the above-mentioned present situation, and an object of
the present invention is to provide a speaker grille capable of distributing sound from a speaker
in a well-balanced manner to a seated person seated at different seating positions.
[0006]
In order to solve the above-mentioned problems, the invention according to claim 1 is a speaker
grill attached to a vehicle interior part and having an opening for directing sound from a speaker
in a predetermined direction, wherein the opening is the above-mentioned opening The gist of
the present invention is to provide a first opening for directing the sound from the speaker in a
first direction, and a second opening for directing the sound from the speaker in a second
direction different from the first direction.
The invention according to claim 2 is characterized in that, in the claim 1, the first direction and
the second direction are different in inclination angle with respect to the thickness direction of
the speaker grille in the longitudinal cross section of the speaker grille. I assume.
The invention according to claim 3 is characterized in that, in claim 1 or 2, the first direction and
the second direction have different inclination angles with respect to the thickness direction of
the speaker grille in the cross section of the speaker grille. As the abstract.
The gist of the invention according to claim 4 is that, in any one of claims 1 to 3, the total
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opening area of each of the first opening and the second opening is different.
[0007]
According to the speaker grille of the present invention, the opening includes a first opening that
directs the sound from the speaker in a first direction, and a second opening that directs the
sound from the speaker in a second direction different from the first direction. The sound from
the speaker is distributed in the first direction and the second direction by the first opening and
the second opening. Therefore, it is possible to distribute the sound from the speaker in a wellbalanced manner to a seated person sitting at different seating positions. Further, the first
direction and the second direction may be a thickness of the speaker grill in a longitudinal cross
section of the speaker grille. If the inclination angles with respect to the longitudinal direction are
different, the sound from the speakers is distributed in the directions in which the longitudinal
inclination angles of the speaker grills are different. Further, when the first direction and the
second direction have different inclination angles with respect to the thickness direction of the
speaker grill in the cross section of the speaker grill, the sound from the speaker is an inclination
of the speaker grill in the lateral direction. The angles are distributed in different directions.
Furthermore, when the total opening area of each of the first opening and the second opening is
different, a relatively small sound is emitted from one opening, and a relatively loud sound is
generated from the other opening. Is emitted, and sound with substantially the same volume can
be distributed to a seated person seated at a seating position different in distance from the
speaker. Therefore, the sound from the speaker can be distributed in a more balanced manner.
[0008]
The invention will be further described in the following detailed description referring to the nonlimiting examples of exemplary embodiments according to the invention and with reference to
the several figures referred to, but like reference numerals in the drawings. Similar parts are
shown throughout the several figures. It is a perspective view of a speaker grill (state attached to
a door trim) concerning an example. It is a front view of the said speaker grille. It is the III-III
sectional view taken on the line of FIG. It is the IV-IV sectional view taken on the line of FIG. It is
explanatory drawing for demonstrating the effect ¦ action of the said speaker grille, (a) shows the
state which looked at the vehicle seat from the front, and (b) shows the state which looked at the
vehicle seat from the plane.
[0009]
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The matter set forth herein is illustrative and is for the purpose of illustrating the embodiments
of the invention and is intended to provide the most effective and easily understood explanation
of the principles and conceptual features of the invention. It is stated for the purpose of
providing what seems to be. In this respect, it is not intended to show the structural details of the
present invention beyond what is necessary for a fundamental understanding of the present
invention, and some forms of the present invention will It will be apparent to those skilled in the
art how it may be embodied in practice.
[0010]
1. Speaker grille Embodiment 1. The speaker grill according to the present invention is a
speaker grill (1) attached to a vehicle interior product (2) and having an opening for directing
sound from the speaker (3) in a predetermined direction, the opening being the speaker (3) First
opening (5) which directs the sound from the first direction (D1), and the second opening which
directs the sound from the speaker (3) in the second direction (D2) different from the first
direction (D1) And a unit (6) (see, eg, FIGS. 2 to 4). The first direction (D1) is a direction generally
coinciding with the central axis of the through hole type first opening (5). The second direction
(D2) is usually a direction substantially coinciding with the central axis of the through holeshaped second opening (6).
[0011]
First Embodiment As the speaker grille according to the present invention, for example, [A] the
first direction (D1) and the second direction (D2) are the inclination angles (with respect to the
thickness direction of the speaker grille (1) in the longitudinal cross section of the speaker grille
(1)) A1 and A2) are different (for example, see FIG. 3), [B] the first direction (D1) and the second
direction (D2) are the speaker grille (1) in the cross section of the speaker grille (1) The form (for
example, refer FIG. 4 grade ¦ etc.,) Etc. with which the inclination angle (B1, B2) with respect to
the thickness direction of () differs can be mentioned. In addition, the said longitudinal cross
section and a cross section are surfaces which are substantially orthogonal normally.
[0012]
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As an inclination angle (A1) of the said 1st direction (D1), 0-80 degree (preferably 0-70 degree)
can be mentioned, for example. Moreover, as an inclination angle (A2) of the said 2nd direction
(D2), 0-80 degree (preferably 0-70 degree) can be mentioned, for example. The inclination angle
(A1) is usually larger than the inclination angle (A2). Moreover, as an inclination angle (B1) of the
said 1st direction (D1), 0-80 degree (preferably 0-70 degree) can be mentioned, for example.
Furthermore, as an inclination angle (B2) of the said 2nd direction (D2), 0-80 degree (preferably
0-70 degree) can be mentioned, for example.
[0013]
First Embodiment In the speaker grille according to the present invention, for example, the total
opening area (S1, S2) of each of the first opening (5) and the second opening (6) is different (see,
eg, FIG. 2) It can be mentioned. The ratio (S2 / S1) of the total opening area (S1) of the first
opening (5) to the total opening area (S2) of the second opening (6) is, for example, 1 to 100
(preferably 1 to 10). 10) can be mentioned. In addition, the above-mentioned "opening total area"
intends total of the opening area of the surface where the sound of a speaker grill is emitted.
[0014]
Hereinafter, the present invention will be specifically described by way of examples using the
drawings. In the drawings, the longitudinal direction of the vehicle is shown as "front side" and
"rear side", and the vertical direction of the vehicle is shown as "upper side" and "lower side".
[0015]
(1) Configuration of Speaker Grill As shown in FIG. 1, the speaker grill 1 according to the present
embodiment is exemplified as a door trim 2 ( vehicle interior part according to the present
invention. Vertically attached to the front lower part of). In the present embodiment, one
disposed as a side of the driver's seat 4a or the assistant's seat 4b of the vehicle as the door trim
2 is illustrated (see FIG. 5).
[0016]
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The said speaker grille 1 is formed in disk shape so that the front surface of the single speaker 3
(refer FIG.3 and FIG.4) provided in the door trim 2 may be covered, as shown in FIGS. 2-4. In the
speaker grille 1, a plurality of (eight in the drawing) first openings 5 are formed through the
upper area R1 (see FIG. 2), and a plurality of lower areas R2 (see FIG. 2) are formed. The second
openings 6 (18 in the drawing) are formed through.
[0017]
Each of the first openings 5 is formed in a hole shape extending linearly so as to direct the sound
from the speaker 3 in the first direction D1. The first direction D1 is a direction substantially
coinciding with the central axis of the first opening 5, and is directed to a seated person seated in
the seating position (driver's seat 4a or passenger seat 4b) near the speaker 3 (see FIG. 5).
Further, each of the second openings 6 is formed in a hole shape extending linearly so as to
direct the sound from the speaker 3 in a second direction D2 different from the first direction D1.
The second direction D2 is a direction substantially coinciding with the central axis of the second
opening 6 and directed to a seated person seated at the seating position (passenger seat 4b or
driver's seat 4a) distant from the speaker 3 (see FIG. 5).
[0018]
In the longitudinal section of the speaker grille 1, the inclination angle A1 of the first direction
D1 to the thickness direction of the speaker grille 1 is about 50 degrees, and the inclination
angle A2 of the second direction D2 to the thickness direction of the speaker grille 1 is about It is
considered as 30 degrees (refer FIG.3 and FIG.5 (a)). In the cross section of the speaker grille 1,
the inclination angle B1 of the first direction D1 with respect to the thickness direction of the
speaker grille 1 is about 40 degrees, and the inclination angle B2 of the second direction D2 with
respect to the thickness direction of the speaker grille 1 is It is about 20 degrees (see FIG. 4 and
FIG. 5 (b)).
[0019]
Here, the total opening area S1 of the first opening 5 and the total opening area S2 of the second
opening 6 are different by making the set numbers of the first opening 5 and the second opening
6 different. . Specifically, the total opening areas S1 and S2 are made proportional to the square
of the sound propagation distance. For example, a ratio (L2 / L1) of a distance L1 (see FIG. 5)
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from the speaker 3 to the seating position near the speaker 3 and a distance L2 (see FIG. 5) from
the speaker 3 to the seating position distant from the speaker 3 is 1. Assuming that it is 5, the
ratio (S2 / S1) of the total opening area is 2.25.
[0020]
(2) Operation of Speaker Grill Next, the operation of the speaker grill 1 configured as described
above will be described. As shown in FIG. 5, the sound from the speaker 3 is distributed to the
seated person seated in the seating position (the driver's seat 4 a or the passenger seat 4 b) near
the speaker 3 by the first opening 5 and the second opening It distributes to the seated person
seated in the seating position (the assistant driver's seat 4b or the driver's seat 4a) of the speaker
3 far away by 6. At this time, since the total opening area S1 of the first opening 5 is smaller than
the total opening area S2 of the second opening 6, a relatively small sound is emitted from the
first opening 5, and the second opening 6 A relatively loud sound is emitted, and a sound with
substantially the same volume is distributed to a seated person sitting on the driver's seat 4a or
the passenger seat 4b.
[0021]
(3) Effects of the Embodiment As described above, according to the speaker grill 1 of the present
embodiment, the first opening 5 for directing the sound from the speaker 3 in the first direction
D1, and the sound from the speaker 3 in the first direction D1. And the second opening 6
directed to the second direction D2 different from the above, so that the sound from the speaker
3 is distributed to the first direction D1 and the second direction D2 by the first opening 5 and
the second opening 6 Be done. Therefore, the sound from the speaker 3 can be distributed in a
well-balanced manner to a seated person seated at different seating positions.
[0022]
Further, in the present embodiment, since the first and second directions D1 and D2 have
different inclination angles A1 and A2 with respect to the thickness direction of the speaker grille
1 in the longitudinal cross section of the speaker grille 1, the sound from the speaker 3 The
vertical inclination angles A1 and A2 of the speaker grille 1 are distributed in different directions
D1 and D2. Furthermore, in the present embodiment, since the inclination angles B1 and B2 with
respect to the thickness direction of the speaker grille 1 in the cross section of the speaker grille
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1 are different in the first direction D1 and the second direction D2, the sound from the speaker
3 The lateral inclination angles of the speaker grille 1 are distributed in different directions D1
and D2.
[0023]
Furthermore, in the present embodiment, since the total opening areas S1 and S2 of the first
opening 5 and the second opening 6 are different, a relatively small sound is emitted from one
opening 5, and the other is not A relatively loud sound is emitted from the opening 6, and a
sound with substantially the same volume can be distributed to a seated person seated at a
seating position where the distances from the speaker 3 are different. Thus, the sound from the
speaker 3 can be distributed in a more balanced manner.
[0024]
Furthermore, in the present embodiment, the door trim 2 is vertically mounted, the inclination
angle A1 in the first direction D1 is larger than the inclination angle A2 in the second direction
D2, and the first opening 5 is above the second opening 6 Since the position is provided, the
interference between the sound from the first opening 5 and the sound from the second opening
6 is suppressed.
[0025]
In the present invention, the present invention is not limited to the above-described embodiment,
and can be variously modified within the scope of the present invention according to the purpose
and application.
That is, although the speaker grille 1 attached to the door trim 2 was illustrated in the said
Example, it is not limited to this, for example, it is good also as a speaker grill attached to vehicle
interior materials, such as a pillar, an instrument panel, and a ceiling roof.
[0026]
Moreover, although the speaker grille 1 which distributes a sound to the seating person who sits
in a different seating position in the front row seat of vehicles in the above-mentioned example
was illustrated, it is not limited to this, for example, two rows of vehicles It is good also as a
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speaker grill which distributes sound to a seated person seated in a different seating position in
backseats, such as eyes and 3rd row.
[0027]
Further, in the above embodiment, the speaker grille 1 for distributing sound in two different
directions D1 and D2 has been exemplified, but the invention is not limited thereto. For example,
it is also possible to use a speaker grille for distributing sound in three or more different
directions. Good.
The values of the inclination angles A1, A2, B1 and B2 in the first and second directions D1 and
D2 can be appropriately selected according to the mounting position of the speaker grille and the
like.
[0028]
Further, although the linearly extending through-hole-shaped openings 5 and 6 are exemplified
in the above embodiment, the present invention is not limited to this, and for example, a curved
or bent through-hole-shaped opening may be used. Further, although the openings 5 and 6
having a uniform cross-sectional shape in the penetration direction are illustrated in the above
embodiment, the present invention is not limited to this. For example, the openings may be
spread or narrowed in the penetration direction.
[0029]
Furthermore, in the above embodiment, the openings 5 and 6 having the shape of horizontal
elongated holes are illustrated, but the present invention is not limited to this. For example, the
openings may have circular, polygonal, irregular or other shapes. . The values of the total
opening area S1 and the like of the openings 5 and 6 can be appropriately selected according to
the mounting position of the speaker grille and the like.
[0030]
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The foregoing examples are for illustrative purposes only and are not to be construed as
limitations on the present invention. While the present invention has been described by way of
exemplary embodiments, it is understood that the words used in the description and illustration
of the present invention are illustrative and exemplary rather than restrictive. Changes may be
made within the scope of the appended claims without departing from the scope or spirit of the
invention in its form, as detailed herein. While the specification herein has been directed to
specific structures, materials, and examples, the present invention is not intended to be limited to
the disclosures herein, but rather is as claimed in the accompanying claims. And all functionally
equivalent structures, methods, and uses within the scope of the invention.
[0031]
The invention is not limited to the embodiments detailed above, but various modifications or
alterations are possible within the scope of the claims of the invention.
[0032]
It is widely used as a speaker grill that directs the sound from a speaker in a predetermined
direction.
[0033]
1; speaker grille, 2; door trim, 3; speaker, 5; first opening, 6; second opening, D1; first direction,
D2; second direction, A1, A2, B1, B2;
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