JP2016082446

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DESCRIPTION JP2016082446
Abstract: A sound environment having a spread inside a vehicle cabin is realized by efficiently
amplifying sound without deteriorating the appearance and air conditioning capacity. A speakerequipped duct (35) connected to an air conditioning duct (21) extending from a vehicle air
conditioning and heating air conditioning facility, at least one of one end and the other end is
connected to the air conditioning duct (21), and a speaker (37) And the horn portion (40) of
which the inner diameter increases with distance from the speaker (37) is formed on at least one
side of one end and the other end. [Selected figure] Figure 2
Speaker with duct
[0001]
The present invention relates to a speaker equipped duct in which a speaker is attached to an air
conditioning duct.
[0002]
Conventionally, since the interior of a car is a kind of private space, there is a need to listen to
favorite music with as good sound quality as possible.
Due to the structure of the human ear, it is better to hear from the front especially middle high
and high sound with short wavelength and high directivity. On the other hand, since the lowpitched sound of low wavelength becomes loose in directivity and becomes easy to wrap around,
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a speaker is embedded in a door or the like to cope with the low-pitched sound.
[0003]
However, in the case of the embedded speaker, it is difficult to obtain a sufficiently large back
cavity, so that there is a problem that there is a problem in the bass reproduction.
[0004]
Therefore, for example, as in Patent Document 1, the internal space of the switching box
provided in the heating and cooling air conditioning equipment (hereinafter referred to as HVAC:
heating, ventilating, air conditioning) and the inside of the enclosure containing the speaker unit
are ducted. There is known a speaker system for a car that is in communication.
[0005]
Japanese Utility Model Application Publication 63-155855
[0006]
On the other hand, if the sound is emphasized too much and a large speaker is provided at a
prominent position, the sound emission hole of the speaker can be seen by the occupant and the
appearance is deteriorated.
Further, in the case of Patent Document 1, medium to high sound from the front of the speaker
may reach the occupant without being amplified, and bass from the back may not be sufficiently
amplified.
[0007]
The present invention has been made in view of such a point, and an object of the present
invention is to efficiently amplify sound without deteriorating the appearance and the air
conditioning capability to realize an acoustic environment having a spread in a vehicle
compartment. It is in.
[0008]
In order to achieve the above object, in the present invention, the horn portion is provided in a
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part of the duct with a speaker.
[0009]
Specifically, in the first aspect of the invention, at least one of the one end and the other end is
connected to the air conditioning duct in the duct with a speaker connected to the air
conditioning duct extending from the vehicle air conditioning heating and air conditioning
facility, and the speaker is disposed inside A horn portion is formed on at least one side of the
one end and the other end such that the inner diameter increases with distance from the speaker.
[0010]
According to the above configuration, by providing the horn portion, the inner diameter
gradually spreads and the sound is easily spread as compared with the case where the horn
portion is not provided, and the amplification effect is exhibited.
Moreover, since the speaker is provided in the duct with a speaker, the speaker is not exposed
and the appearance does not deteriorate.
Furthermore, since the speakers are provided not in the air conditioning duct itself but in the
duct with a speaker, the flow of the conditioned air is hardly hindered.
[0011]
In a second invention, in the first invention, the one end and the other end are divided with the
speaker interposed therebetween, and at least one of the one end and the other end is integrally
formed with the air conditioning duct. .
[0012]
According to the above configuration, by forming at least one of the one end of the duct with a
speaker and the other end integrally with the air conditioning duct, the number of parts is
reduced and the assembly of the duct with a speaker becomes easy.
[0013]
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In a third aspect of the present invention, in the first or second aspect, the speaker is disposed so
that the front face is directed toward the one end, and the horn portion is formed so that the
inner diameter is expanded toward the other end. The horn portion is open below the instrument
panel.
[0014]
That is, since the low sound has lower directivity than middle and high sound, the sound emitting
part does not have to face the occupant.
According to the above configuration, since the horn portion is opened below the instrument
panel, the horn portion can be easily enlarged, and the low-pitched sound amplified by the horn
portion is transmitted from the underfoot of the occupant while spreading.
[0015]
As described above, according to the present invention, it is possible to miniaturize the speaker
by forming the horn portion on the at least one side of one end and the other end of the speaker
attached duct with the inner diameter increasing with distance from the speaker. Sound can be
efficiently amplified without deteriorating the appearance and the air conditioning capacity, and
an acoustic environment having a spread in the vehicle interior can be realized.
In addition, the weight and cost of the speaker can be reduced.
[0016]
It is a perspective view showing an instrument panel containing a duct with a speaker concerning
Embodiment 1 of the present invention.
It is an expanded sectional view which shows the positional relationship of a windshield and a
speaker.
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It is the schematic which shows the air conditioning system to which the duct with a speaker was
connected.
It is a disassembled perspective view which shows the air conditioning system to which the duct
with a speaker was connected.
It is the FIG. 2 equivalent view which concerns on the modification of Embodiment 1. FIG. It is the
FIG. 3 equivalent view which concerns on Embodiment 2. FIG. It is the FIG. 3 equivalent view
which concerns on Embodiment 3. FIG.
[0017]
Hereinafter, embodiments of the present invention will be described based on the drawings.
[0018]
(First Embodiment) FIG. 1 is a perspective view showing an instrument panel 1 including a duct
with a loudspeaker according to the first embodiment. In the instrument panel 1 illustrated in
this embodiment, a driver's seat is on the right side of the vehicle body. It is a panel for the righthand drive vehicle that is located.
The instrument panel 1 may be for a left-hand drive vehicle.
[0019]
The instrument panel 1 is, for example, an instrument panel mounted with various instruments
such as a speedometer and an engine tachometer, and is disposed at the front of the vehicle
compartment and extends in the vehicle width direction. By being supported by the vehicle body
and attached to the vehicle body, it is equipped on the rear side (vehicle compartment side) of
the dash panel that divides the engine room and the vehicle compartment.
[0020]
As shown in FIG. 4, an air conditioning system 19 is provided in the instrument panel 1, and the
broken arrow in FIG. 2 indicates the flow of the wind blown out from the blowout port 13 for the
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defroster, and the white outline is Arrows indicate the flow of medium and high sound emitted
from the speaker, and black arrows indicate the flow of bass emitted from the speaker.
[0021]
As shown in FIG. 2, a windscreen 3 is provided above the instrument panel 1 so as to be inclined
upward toward the rear of the vehicle.
The front window glass 3 is gently curved so as to be convex toward the front of the vehicle body
in the vehicle width direction, and although not shown, the peripheral portion is attached to the
roof front edge portion of the vehicle body, the front pillar and the cowl top ing.
[0022]
The instrument panel 1 extends in the vehicle width direction in a bulging shape to the rear of
the vehicle body, and for example, an upper surface portion extending from near the lower end
of the front window glass 3 toward the vehicle interior (rearward) and a rear end of the upper
surface portion And a rearward surface portion extending downward while curving from the
edge.
The lower end of the rear surface is open. The instrument panel 1 is manufactured, for example,
by injection molding of a resin material using a mold.
[0023]
As shown in FIG. 1, on the right side portion of the instrument panel 1 corresponding to the
driver's seat, there is provided a meter hood 5 on which the instruments located in front of the
driver along with the steering wheel are mounted.
[0024]
At the center of the rear of the instrument panel 1 in the vehicle width direction, there are
operation switches and audio devices for the vehicle air conditioning system (hereinafter referred
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to as HVAC 20) constituting the air conditioning system 19 installed in the panel 1 The center
panel unit 7 to which in-vehicle devices such as are attached is provided.
In the center panel portion 7, center air outlets 9 for blowing conditioned air such as warm air or
cold air from the HVAC 20 into the vehicle compartment are formed, for example, side by side in
the left-right direction.
[0025]
Further, side air outlets 11 for blowing conditioned air into the vehicle interior are formed at
height positions corresponding to the center air outlets 9 at portions on both left and right sides
in the vehicle width direction of the instrument panel 1. . The center air outlets 9 and the side air
outlets 11 are outlets for air conditioning of the vehicle interior for adjusting the temperature of
air in the vehicle interior.
[0026]
In addition to the air outlets 9 and 11 for air conditioning in the vehicle compartment, the
instrument panel 1 is formed with air outlets 13 and 15 for a defroster that blows hot air for
removing the fogging caused by condensation of the windshield 3. There is. The blower openings
13 and 15 for the defroster are a windshield 13 for preventing fog (hereinafter referred to as a
front differential blower outlet) 13 for securing visibility of the front of the vehicle through the
windshield 3; A pair of air outlets (hereinafter referred to as side differential air outlets) 15 for
fog prevention of the front side window glass for securing the visibility of the vehicle side such as
a side mirror through a front side window glass (not shown).
[0027]
Each side differential blower outlet 15 is provided on the upper front side of the side air blower
outlet 11 for air conditioning in the passenger compartment. On the other hand, only one front
differential blower outlet 13 is formed at the central portion of the front edge side portion of the
upper surface portion of the instrument panel 1 so as to face the windscreen 3, and the vehicle
width direction is along the windscreen 3 It extends to As shown in FIG. 2, a differential nozzle
17 for sending the conditioned air from the air conditioner unit is connected to the front
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differential blower outlet 13, and the conditioned air (indicated by a broken arrow) sent from the
differential nozzle 17 is a windshield. It is supposed to blow out towards 3.
[0028]
As shown in FIG. 3 and FIG. 4, the defroster duct 21, the vent duct 22 and the lower duct 25
extend from the front of the vehicle sequentially from the HVAC 20.
[0029]
The defroster duct 21 extends upward and to the left and right and is connected to the front
differential blower outlet 13 for the defroster.
In addition, a side defroster duct 27 extends to the left and right respectively on the left and right
sides of the defroster duct 21 and is connected to the side differential blow-off port 15.
[0030]
The vent duct 22 is formed of a front center duct 23 and a front side duct 29. Specifically, a front
center duct 23 connected to the HVAC 20 extends substantially horizontally to the cabin side and
is connected to the center air outlet 9. Further, the front side duct 29 is communicated so as to
extend laterally from the front center duct 23 and is connected to the side air outlet 11.
[0031]
The lower duct 25 is in communication with the lower front duct 31 which spreads to the left
and right, and the lower rear duct 33 which extends to the rear and to the left and right.
[0032]
And as shown in FIG.3 and FIG.4, the duct 35 with a speaker is connected to each of a pair of
front side ducts 29. As shown in FIG.
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Specifically, the first duct 35a which is one end side of the speaker attached duct 35
communicates with the cylindrical attachment portion 17a provided in the defroster duct 21
extending from the HVAC 20 to the front window glass 3 side of the vehicle. A speaker 37 is
disposed inside so that the front side faces in the direction of the first duct 35a.
[0033]
As a feature of the present invention, a horn portion 40 whose inner diameter increases with
distance from the speaker 37 is formed on the side of the first duct 35 a of the duct 35 with a
speaker. The cross-sectional shape of the duct 35 with a speaker is, for example, circular
according to the shape of the speaker 37, but is not limited thereto, and may be triangular,
rectangular, elliptical or the like. Similarly, the cross-sectional shape of the horn portion 40 is not
particularly limited. As shown in FIG. 2, the shape of the mounting portion 17 a preferably
extends toward the defroster duct 21, but may have a cylindrical shape with a substantially
constant inner diameter. The horn portion 40 is connected to the mounting portion 17 a by
press-fitting, adhesion or the like.
[0034]
Then, the other end side (second duct 35 b) extending to the back side of the speaker 37 in each
speaker attached duct 35 is in communication with the front side duct 29 (vent duct 22)
extending from the HVAC 20 to the left and right. The length of the second duct 35b is longer
than the length of the first duct 35a. In addition, since the inside of the duct 35 with a speaker is
closed by the speaker 37, the conditioned air does not travel back and forth between the first
duct 35a and the second duct 35b. Since the speakers 37 are provided not in the air conditioning
duct itself but in the speaker and duct 35, the flow of the conditioned air is hardly hindered.
Moreover, since the speaker 37 is provided in the duct 35 with a speaker, the speaker 37 is not
exposed and the appearance does not deteriorate.
[0035]
As shown in cross section in FIG. 2, the first duct 35 a communicating with the attachment
portion 17 a of the defroster duct 21 is connected to be inclined with respect to the opposing
inner surface 21 a of the defroster duct 21. Although not illustrated in particular, in a plan view,
the first duct 35a is connected to the defroster duct 21 in a state in which the first duct 35a
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spreads laterally. That is, since the medium and high sound transmitted to the first duct 35a has
high directivity, if it hits the inner surface 21a of the defroster duct 21 perpendicularly, the
sounds cancel each other and get caught, but in the present embodiment, it is inclined. Medium
and high sound is properly reflected on the inner surface 21a and emitted from the side of the
defroster duct 21 without being trapped in the vehicle compartment. The speaker 37 is disposed
so that the front side is directed to the left and right outside as viewed from the windshield 3, so
the sound propagated to the defroster duct 21 side easily spreads to the left and right.
[0036]
Further, in the present embodiment, the occupant is provided with the speakers 37 respectively
provided in the pair of speakers 35 to emit different sounds on the left and right and to
propagate them to the front side duct 29 (vent duct 22) extending to the left and right. You can
hear a wider sound while feeling the stereo effect. In addition, by propagating the low frequency
sound from the rear side into the front side duct 29 (vent duct 22), the speaker 37 of the side
door, which is often provided conventionally, can be omitted, and the appearance can be
improved. Moreover, in the present embodiment, as shown in FIG. 4, the HVAC 20 is also in
communication with the lower front duct 31 and the lower rear duct 33 via the lower duct 25 so
that bass can be resonated from under the foot. For this reason, it is not necessary to provide the
speaker 37 on the rear seat side, and the appearance does not deteriorate.
[0037]
In this embodiment, medium to high sound emitted from the front side of the speaker 37, in
particular, the directivity is higher than that of the low sound is transmitted to the defroster duct
21 side, and the sound is transmitted to the windscreen 3 side to be the front window. Since it
bounces back to the glass 3 and goes to the occupant side, the occupant can hear from the front
especially the middle and high sound with a spread. At this time, by providing the horn portion
40, the inner diameter is gradually spread and the sound is easily spread as compared with the
case where the horn portion 40 is not provided, and the amplification effect is remarkably
exhibited.
[0038]
Therefore, in the present embodiment, the speaker 37 can be miniaturized by forming the horn
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portion 40 whose inner diameter increases with distance from the speaker 37 on the side of the
first duct 35a of the speaker attached duct 35, and the appearance and air conditioning
capability The sound can be amplified efficiently without deteriorating the sound quality, and an
acoustic environment having a spread in the vehicle compartment can be realized. In addition,
the weight and cost of the speaker 37 can be reduced.
[0039]
Modified Example FIG. 5 shows a modified example of the first embodiment of the present
invention, which is different from the above embodiment in that the configuration of the first
duct 35a is different. In the present modification and the following embodiments, the same parts
as those in FIGS. 1 to 4 are denoted by the same reference numerals, and the detailed description
thereof is omitted.
[0040]
That is, in the present modification, the mounting portion 17a is formed integrally with the first
duct 35a. Compared to the first embodiment, the horn portion 40 and the attachment portion
17a are smoothly continued. This configuration reduces the number of parts and facilitates the
assembly of the duct 35 with a speaker.
[0041]
Moreover, although the duct 35 with a speaker is formed separately from the vent duct 22, you
may form integrally. Specifically, the second duct 35b and the front side duct 29 may be
integrally formed.
[0042]
Furthermore, the horn portion 40 may be provided at the connection portion with the front side
duct 29.
[0043]
Second Embodiment FIG. 6 shows an air conditioning system 19 'according to a second
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embodiment of the present invention, which differs from the first embodiment in that the
configuration of the duct 35' with a speaker is different.
[0044]
That is, in the present embodiment, the horn portion 40 is provided on the side of the second
duct 35b instead of providing the horn portion 40 on the side of the first duct 35a 'of the
speaker attached duct 35'.
As in the first embodiment, the front of the speaker 37 is directed to the front of the vehicle
body, and the horn portion 40 ′ is opened below the instrument panel 1.
[0045]
In this embodiment, since the horn 40 'is opened below the instrument panel, the horn 40' can
be easily enlarged, and the bass amplified by the horn 40 'spreads from under the occupant's
foot. I will carry it.
It is not necessary for the sound emitting part to be directed toward the passenger since the low
sound is less directional than the middle and high sound. Further, by making the side of the
second duct 35b 'to which the bass is transmitted longer than the first duct 35a, the bass can be
efficiently resonated and amplified to realize the bass spreading.
[0046]
If the horn portions 40 and 40 'are provided in both the first duct 35a and the second duct 35b'
by combining the first embodiment and the second embodiment, the amplification effect is
further exhibited. (Third Embodiment) FIG. 7 shows an air conditioning system 19 ′ ′
according to a third embodiment of the present invention, in which one end of the speaker
attached duct 35 ′ ′ is not connected to the defroster duct 21 but directly to the side
differential blower outlet 15. The second embodiment differs from the first and second
embodiments in that they are connected.
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[0047]
That is, in the present embodiment, the speaker attached duct 35 ′ ′ is directly transmitted to
the left and right side differential air outlets 15 instead of the center. Medium-high-pitched
sound is mainly emitted from the sound release hole 35 c ′ ′ that is blown from the side
differential blow-off port 15. In the present embodiment, the horn portion 40 '' is formed in
which the outer diameter gradually increases toward the end portion on the side of the first duct
35a '' on which the sound release hole 35c "is formed.
[0048]
For this reason, since the middle and high-pitched sound amplified by the horn section 40 '' can
be heard from the front right and left of the occupant, a more efficient stereo effect can be
obtained. (Other Embodiments) The present invention may be configured as follows for the above
embodiment.
[0049]
That is, in the above-mentioned embodiment, although one pair of duct 35 with a speaker is
provided, only one may be provided and one speaker 37 may be provided in the inside. In that
case, although a pair of speakers 37 can not be provided as in the above embodiment to make a
difference between the left and right sounds, a broad acoustic environment can be obtained by
transmitting middle and high tones and low tones separately. Be
[0050]
Furthermore, in the above embodiment, although the duct 35 with a speaker is formed by being
divided by the first duct 35a and the second duct 35b, it is integrally formed, and the speaker 37
is inserted and fixed from one end side You may do so.
[0051]
In addition, since the front side of the speaker 37 faces the front of the vehicle, middle and high
sound is easily spread from the front, but the invention is not limited thereto. The front side of
the speaker 37 may be directed backward to face the vehicle.
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[0052]
The above embodiments are essentially preferable examples, and are not intended to limit the
scope of the present invention, its applications and uses.
[0053]
As described above, the present invention is useful for a speaker equipped with a speaker
connected to an air conditioning duct extending from a vehicle air conditioning system installed
in an instrument panel of a car or the like.
[0054]
DESCRIPTION OF SYMBOLS 1 instrument panel 3 front window glass 5 meter hood 7 center
panel part 9 center air outlet 11 side air outlet 13 front differential outlet 15 side differential
outlet 17 differential nozzle 17a attachment part 19, 19 ', 19' 'air conditioning system 20 HVAC
(Vehicle heating / cooling air conditioning equipment) 21 defroster duct 21a inner surface 22
vent duct 23 front center duct 25 lower duct 27 side defroster duct 29 front side duct 31 lower
front duct 33 lower rear duct 35, 35 ', 35' 'duct 35a with speaker, 35a ', 35a' 'first duct 35b,
35b', 35b '' second duct 35c '' sound output hole 37 speaker 40, 40 ', 40' 'horn part
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