JP5345368B2 - In-vehicle speaker device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an "on-vehicle speaker system" which is easily mounted on a ceiling part in a car cabin without being an obstacle, includes high performance of reproducing a low-pitched range and includes no risk of causing a falling accident and deformation in a ceiling panel. <P>SOLUTION: Trough-shaped sound path forming parts 10 are provided so as to project integrally at the side part of the ceiling panel 3 in the car cabin, and a speaker body 12 is incorporated in the sound path forming parts 10 to thereby constitute an on-vehicle speaker system 1 united into a single body with the ceiling panel 3 in advance. The sound path forming parts 10 extend long in the cross direction of a vehicle 2, and at least ones of both front and rear ends of the sound path forming parts 10 are an opening end 10b or 10c exposing itself near an upper corner in the car cabin. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to an electrodynamic in-vehicle speaker device installed in a vehicle, and more particularly to an in-vehicle speaker device that requires a high-quality low-frequency reproduction capability such as a subwoofer.

  In order to increase the low frequency reproduction capability in a general speaker device constructed by incorporating the speaker main body into a sound box, it is necessary to secure a wide space inside the sound box, so that the subwoofer for low sound range reproduction is used. Requires a large acoustic box. However, in the case of a vehicle-mounted speaker device, since there is almost no space for installing a large acoustic box in the vehicle interior, the vehicle-mounted subwoofer has often been installed in the rear tray or trunk room.

  However, when a large acoustic box is installed on the rear tray, there is a problem that an effective space that can be used as a luggage storage place is restricted and the passenger's rear view is adversely affected. On the other hand, when the acoustic box is installed in the trunk room, there is a problem that a large opening must be formed in the rear tray so that the reproduced sound is radiated into the vehicle interior.

Therefore, conventionally, in order to solve such a problem, a technique has been proposed in which a speaker device is externally attached to a ceiling panel in a vehicle interior (see, for example, Patent Document 1). Such a conventional in-vehicle speaker device is such that a long and narrow hollow box incorporating a speaker body is attached to a ceiling panel, and a low volume is achieved by a hollow box that easily secures a large internal volume even if the protruding amount from the ceiling panel is suppressed. Since the characteristics can be improved, it can be used as an in-vehicle subwoofer with little risk of adversely affecting the comfort in the passenger compartment and the view of the passenger.
Japanese Utility Model Publication No. 1-113057

  However, the above-described conventional example of externally attaching to the ceiling panel has a problem that the installation work of the speaker device is complicated, and the ceiling panel whose mechanical strength is not so strong is deformed by the weight of the speaker device, or the speaker There was a risk that the device itself would fall off. Therefore, in the above-mentioned conventional example, a measure is taken to reduce the weight by forming the hollow box as thin as possible, but this makes it easier for the hollow box to cause undesired resonance, so that the acoustic effect deteriorates. It will cause problems.

  The present invention has been made in view of such a state of the art, and an object of the present invention is to be easily attached to the ceiling of a vehicle interior without being obstructed, and to have a high bass reproduction capability, and An object of the present invention is to provide an in-vehicle speaker device that does not cause a dropout accident or a deformation of a ceiling panel.

  The present invention is a vehicle-mounted vehicle that is integrated with a ceiling panel in advance by integrally projecting a bowl-shaped sound path forming portion on the side of a ceiling panel in a vehicle interior and incorporating a speaker body into the sound path forming portion. The speaker device for a vehicle is configured, and the front end and / or the rear end of the sound path forming portion extending in the front-rear direction of the vehicle is an open end that is exposed in the vicinity of the upper corner of the vehicle interior.

  According to the in-vehicle speaker device of the present invention, the sound path forming portion can form a sound path that extends long in the front-rear direction of the vehicle, and the opening end of the sound path forming portion is near the upper corner of the vehicle interior. By increasing the acoustic impedance by exposing, air noise can be suppressed, and the low frequency range characteristic can be easily improved. Therefore, this speaker device is less likely to adversely affect the comfort of the passenger compartment and the sight of the passenger, and is suitable as a vehicle-mounted subwoofer. In addition, a relatively light speaker body can be incorporated inside the sound path forming part that is located on the side of the ceiling panel and can be firmly fixed to the vehicle, so that the required performance can be exhibited. It is easy to avoid deformation of the ceiling panel. Further, since the bowl-shaped sound path forming portion can be formed integrally with the ceiling panel, the speaker device can be easily attached and the number of parts can be reduced. In addition, the sound path forming portion of the speaker device has an accompanying effect of functioning as a reinforcing rib that increases the torsional rigidity of the ceiling panel.

  An in-vehicle speaker device according to the present invention includes a sound path forming portion that protrudes in a bowl shape integrally with the ceiling panel on a side portion of a ceiling panel in a vehicle interior, and extends in the front-rear direction of the vehicle. A speaker body incorporated in a predetermined position toward the front or rear, and at least one of the front and rear ends of the sound path forming portion is an open end, and the open end is exposed in the vicinity of the upper corner of the vehicle interior. It was configured to let you.

  In the in-vehicle speaker device configured as described above, a cylindrical space having a large internal volume extending in the front-rear direction of the vehicle can be secured by the sound path forming unit, and the reproduction sound of the speaker body is generated using the cylindrical space as a sound path. Since it can radiate | emit into the vehicle interior from the opening end of a road formation part, it is easy to improve a low-frequency characteristic. In addition, the opening end of the sound path forming portion is exposed near the upper corner of the vehicle interior, and since the acoustic impedance is high, air noise can be suppressed and the low frequency range characteristics are further improved. As a result, a speaker device such as a subwoofer having a high low-frequency reproduction capability can be realized using a relatively lightweight speaker body, so that the ceiling panel is less likely to be deformed by the weight of the speaker body, and the speaker device may fall off. Absent. In addition, since the sound path forming part is an integral part of the ceiling panel, the speaker dedicated member corresponding to the acoustic box or the hollow box can be omitted, and the number of parts can be reduced. Since it also serves as an installation, the installation cost can be reduced. In addition, since the side portion of the ceiling panel is a portion that is firmly fixed to the vehicle, the torsional rigidity of the ceiling panel is increased by integrally projecting the bowl-shaped sound path forming portion on this side portion. In addition, even if the side part of the ceiling panel protrudes in a bowl shape, the possibility of pressing the comfort in the passenger compartment is low, and there is no possibility of impairing the view of the passenger.

  In the above configuration, it is possible to obtain a good low-frequency reproduction ability even if the sound path forming part is provided only on one side of the ceiling panel, but the sound path forming part is substantially symmetrical on both sides of the ceiling panel. It is preferable that a speaker main body is incorporated in each of the pair of sound path forming portions. By doing this, the sound can be radiated from both the left and right sides of the vehicle interior, enhancing the acoustic effect and improving the appearance of the ceiling because the appearance of the ceiling is no longer left and right, and the mechanical strength of the ceiling panel. Will further increase.

  In the above configuration, it is preferable that the sound path forming portion is provided with a window portion in which the speaker main body can be inserted and removed, and a lid portion that covers the window portion, whereby the ceiling panel is removed. The speaker body can be repaired or replaced without any problems.

  The embodiment will be described with reference to the drawings. FIG. 1 is an external view of the interior of a vehicle in which a vehicle-mounted speaker device according to an embodiment of the present invention is attached, and FIG. 2 is an integrated view of the speaker device. 3 is an overall perspective view of the ceiling panel, and FIG. 3 is an explanatory view showing the main part of FIG. 2 with the cover member omitted.

  The vehicle-mounted speaker device 1 shown in these drawings is a subwoofer for low-frequency range reproduction. As shown in FIG. 1, the speaker devices 1 having substantially the same shape are integrally disposed on the left and right sides of the ceiling panel 3 of the vehicle 2. It is installed. However, in FIG. 1, one speaker device 1 located on the right side of the ceiling panel 3 and the other speaker device 1 located on the left side have basically the same configuration. That is, each speaker device 1 is integrally formed at a predetermined position in the sound path forming unit 10 and a sound path forming unit 10 that protrudes in a bowl shape integrally with the ceiling panel 3 and extends in the front-rear direction of the vehicle 2. The speaker mounting plate 11, the speaker main body 12 incorporated in the sound path forming unit 10 while being attached to the speaker mounting plate 11, and the upper opening 10 a of the sound path forming unit 10 (see FIG. 3). ) And a cover member 13 (see FIG. 2) for closing the lid. However, in FIG. 1, the shape of one sound path forming part 10 protruding from the right side of the ceiling panel 3 and the shape of the other sound path forming part 10 protruding from the left side are substantially line symmetrical. It has become. In FIG. 1, reference numeral 4 denotes a windshield, 5 denotes a driver's seat door, and 6 denotes a passenger seat door.

  The configuration of the in-vehicle speaker device 1 will be described in detail. The sound path forming portion 10 that extends long in the front-rear direction of the vehicle 2 is formed in a flat and rounded bowl shape. The ends are open ends 10b and 10c. Open end 10b is exposed near the upper right corner or near the upper left corner of windshield 4 in the vehicle interior, and open end 10c is exposed near the upper right corner or near the upper left corner of the rear glass (not shown) in the vehicle interior. ing. That is, the open ends 10b and 10c of the sound path forming portion 10 of each speaker device 1 are exposed in the vicinity of the upper four corners in the vehicle interior. Further, the sound path forming portion 10 is provided with a window portion 10d in which the speaker body 12 can be inserted and removed and a lid portion 14 covering the window portion 10d in the vicinity of the speaker mounting plate 11. The lid portion 14 is fixed to the peripheral edge portion of the window portion 10d by screws or the like, and the speaker body 12 can be taken out from the sound path forming portion 10 by removing the lid portion 14 and exposing the window portion 10d. It has become. The speaker mounting plate 11 is an integral part of the sound path forming portion 10, and the speaker mounting plate 11 reinforces the central portion in the longitudinal direction of the sound path forming portion 10. The cover member 13 is a rectangular plate material made of plastic, a thin iron plate, or the like, and the upper opening 10 a is closed by the cover member 13 after the speaker body 12 is assembled to the speaker mounting plate 11.

  The sound path forming portion 10 and the speaker mounting plate 11 of each speaker device 1 are formed integrally with the ceiling panel 3, and PP (polypropylene), for example, is preferable as the molded resin material. And each speaker apparatus 1 is fixed to the vehicle 2 integrally with the ceiling panel 3 by attaching the ceiling panel 3 to the roof part of the vehicle 2 in the state which attached the speaker main body 12 to each speaker attachment plate 11, respectively. It is like that. At that time, the sound path forming portions 10 of the speaker devices 1 are firmly fixed to the vehicle 2 because they are located on the left and right sides of the ceiling panel 3. Therefore, the pair of sound path forming portions 10 function as reinforcing ribs that increase the torsional rigidity of the ceiling panel 3.

  As described above, the in-vehicle speaker device 1 according to the present embodiment can secure a cylindrical space having a large internal volume that extends long in the front-rear direction of the vehicle 2 by the sound path forming unit 10. Since the reproduction sound of the speaker main body 12 can be radiated from the opening ends 10b and 10c of the sound path forming unit 10 into the vehicle interior, the low sound range characteristics are easily improved. In addition, since the opening ends 10b and 10c of the sound path forming portion 10 are exposed near the upper corners of the vehicle interior and have high acoustic impedance, air noise can be suppressed and the low sound range characteristics are further improved. Therefore, in this embodiment, a subwoofer having a high low-frequency reproduction capability is realized by using a relatively lightweight speaker body 12. Therefore, the possibility that the ceiling panel 3 is deformed by the weight of the speaker body 12 is low, and there is no possibility that the speaker device 1 is dropped.

  Moreover, in the vehicle-mounted speaker device 1 according to the present embodiment, the sound path forming unit 10 is formed integrally with the ceiling panel 3, so that a speaker dedicated member corresponding to an acoustic box or a hollow box can be omitted, and the number of parts can be reduced. In addition to being able to reduce, the work of attaching the ceiling panel 3 to the vehicle 2 also serves as the work of attaching the speaker device 1, so that the installation cost can also be reduced. In addition, since both side portions of the ceiling panel 3 are portions that are firmly fixed to the vehicle 2, the torsional rigidity of the ceiling panel 3 is enhanced by integrally projecting the bowl-shaped sound path forming portions 10 on both side portions. Can do.

  Further, in the vehicle-mounted speaker device 1 according to the present embodiment, the sound path forming unit 10 is provided with the window 10d through which the speaker body 12 can be inserted and removed, and the lid 14 that covers the window 10d. The speaker body 12 can be easily repaired or replaced without removing the ceiling panel 3.

  In this embodiment, since the sound path forming portion 10 is formed in a flat and rounded shape, even if the sound path forming portion 10 protrudes on both sides of the ceiling panel 3, the comfort in the passenger compartment is improved. The possibility of pressure is low and there is no risk of losing the sight of the passenger. However, the shape of the sound path forming portion 10 can be appropriately selected according to the height dimension of the vehicle interior space, the shape of the roof portion, and the like. Further, the position of the speaker mounting plate 11 in the sound path forming portion 10, that is, the position where the speaker main body 12 is incorporated can be appropriately selected according to the size of the passenger compartment.

  Further, in this embodiment, the sound path forming portion 10 is provided in a substantially symmetrical shape on both sides of the ceiling panel 3, and the speaker main body 12 is incorporated in each of the pair of sound path forming portions 10. A subwoofer with a high acoustic effect can be realized by allowing the reproduced sound to be emitted from both the left and right sides. In addition, the appearance of the ceiling part in the passenger compartment does not become unbalanced from left to right, so that the appearance is good. For example, each sound path forming part 10 can be designed as a decoration of the ceiling panel 3. However, even if the sound path forming unit 10 is provided only on one side (right side or left side) of the ceiling panel 3, it is possible to obtain a good low-frequency range reproduction capability.

  In the above-described embodiment, the opening ends 10b and 10c are provided at both front and rear ends of the sound path forming portion 10, but only one of the front end and the rear end is set as the opening end, and the other is closed. Also good. In this case, the reproduction sound of the speaker body 12 is radiated from the front or the rear to the passengers in the vehicle compartment.

  In the above-described embodiment, the upper opening 10a of the sound path forming unit 10 is closed with the cover member 13. However, the cover member 13 is omitted, and the upper opening 10a is covered with the roof portion of the vehicle 2. The lid may be closed.

It is the external view which looked at the vehicle interior in which the vehicle-mounted speaker apparatus which concerns on the Example of this invention was attached from the back seat side. It is a whole perspective view of the ceiling panel with which this speaker apparatus is integrated. It is explanatory drawing which abbreviate | omits and shows the principal part of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Car-mounted speaker apparatus 2 Vehicle 3 Ceiling panel 10 Sound path formation part 10a Upper opening 10b, 10c Open end 10d Window part 11 Speaker mounting plate 12 Speaker main body 13 Cover member 14 Cover part

Claims (3)

A sound path forming portion that protrudes in a bowl shape integrally with the ceiling panel on the side portion of the ceiling panel in the passenger compartment and extends in the front-rear direction of the vehicle, and forward or backward toward a predetermined position in the sound path forming portion. With a built-in speaker body,
At least one of the front and rear ends of the sound path forming portion is an open end, and the open end is exposed in the vicinity of an upper corner in the vehicle interior.   2. The in-vehicle device according to claim 1, wherein the sound path forming portion is provided in a substantially symmetrical shape on both sides of the ceiling panel, and the speaker body is incorporated in each of the pair of sound path forming portions. Speaker device.   The in-vehicle speaker device according to claim 1 or 2, wherein the sound path forming portion is provided with a window portion in which the speaker main body can be inserted and removed, and a lid portion covering the window portion. .

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