JP2006060488A - In-vehicle speaker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an in-vehicle speaker which can be installed to the vehicle body side in front of a passenger by enhancing the freedom degree in arrangement of the speaker. <P>SOLUTION: The in-vehicle speaker 15 is connected to sound source equipment 12 mounted on an automobile 10. The speaker is provided with a vibration driver 22 which is connected to the sound source equipment 12 and generates air pressure vibration, and a transparent diaphragm 18 which is arranged via the vibration driver 22 and an air pressure vibration transmitter 27. The transparent diaphragm 18 is attached to the front side of equipment 17 mounted in a vehicle interior or the front side of the vehicle interior face of a see-through vehicle interior component 42. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an in-vehicle speaker, and more particularly, to improve a speaker arranged in a state of being connected to a sound source device in an automobile interior to increase the degree of freedom of installation location.

  Conventionally, as shown in FIG. 7, a sound source device 2 (for example, an audio device or a car navigation device) mounted on an automobile 1 is disposed on a front surface portion F of an indoor space S such as a center cluster of an instrument panel 3. It is often done. As a result, there is no space for speakers in the front face F. Therefore, the front seat speakers 5 are disposed in the side doors 4 having a relatively large space, and the rear seats are disposed in the rear space of the indoor space S. The speaker 6 is often arranged.

However, if the speaker 5 is installed on the side door 4 away from the sound source device 2, the electric wire connecting the speaker 5 and the sound source device 2 becomes longer, and the vehicle body on which the sound source device is mounted and the side door 4 on which the speaker is mounted Therefore, it is necessary to attach a grommet (not shown) to the electric wire in order to protect and waterproof the electric wire. For this reason, there is a problem that the number of parts increases and the wiring work of the electric wires takes time.
Moreover, when the speaker 5 is attached to the side door 4, the sound from the speaker is transmitted from the side to the occupant, and the direction in which the sound is transmitted from the front to the occupant is superior in sound effect. This is not a preferred location.

As a speaker, a speaker that reproduces sound by vibrating a transparent panel with air pressure has recently been disclosed in Japanese Patent Application Laid-Open No. 2004-40294. According to this technology, since the speaker is transparent, it is possible to design a product using the space behind the speaker, and the transparent panel can be arranged in front of the display screen of an information terminal device such as a personal computer or a PDA. Proposed.
However, it is only proposed that the speaker mounting position be the front surface of the display screen of the information terminal device.
JP 2004-40294 A

  The present invention has been made in view of the above problems, and it is an object of the present invention to increase the degree of freedom of the location of the speaker so that it can be installed not on the side door but on the vehicle body in front of the occupant.

In order to solve the above problems, the present invention is an in-vehicle speaker connected to a sound source device mounted on an automobile,
A vibration driver connected to the sound source device to generate pneumatic vibration, and a transparent diaphragm disposed so as to be separable via the vibration driver and the pneumatic vibration transmission unit;
The transparent diaphragm is attached to the front side of the vehicle interior device or the front side of the interior surface of the vehicle compartment component.

As in the above configuration, the speaker diaphragm is a transparent diaphragm, so that the back can be seen through the transparent diaphragm. Therefore, even if the transparent diaphragm is arranged, the arrangement position is not limited, and the arrangement is not limited. The degree of freedom of position can be increased. And since the said transparent diaphragm and the said vibration driver can be arrange | positioned in the distant position if it connects via a pneumatic vibration transmission part, the freedom degree of the arrangement | positioning location of a transparent diaphragm can be raised more.
Therefore, it is not necessary to arrange the speaker on the side door side, and the transparent diaphragm of the speaker can be arranged on the vehicle body side, preferably in front of the occupant, and on the front side of the interior space side of various vehicle interior equipment. . Further, when there is no arrangement space on the front side of these mounted devices, it can be arranged on the front side on the indoor side of the vehicle compartment component. At that time, since the transparent diaphragm is provided for seeing through the background, the passenger compartment is also made of a constituent material such as window glass that can be seen through from the outside.

  As described above, since the degree of freedom of speaker placement increases, it is also possible to place the speaker at a position close to the sound source device. As a result, the sound source device and the speaker are directly connected via an electric wire or other wiring material. Can connect. Therefore, it is not necessary to form a wire harness by bundling with electric wires for other devices, which is necessary when a speaker is arranged on a conventional side door.

The transparent diaphragm is disposed, for example, in a sealed space through an outer peripheral frame on the front surface of the mounted material made of the on-vehicle equipment or the vehicle compartment constituent material.
Specifically, the back of the transparent diaphragm requires a sealed space where pneumatic vibration generated by the vibration driver is transmitted, so the front of the mounted device is used as a component of the sealed space facing the transparent diaphragm. In addition, a sealed space is formed by the outer peripheral frame connecting the front surface of the mounted device and the transparent diaphragm. The peripheral wall of the mounted device may be used as the outer peripheral frame, or an outer peripheral frame to which a transparent diaphragm is attached so as to vibrate is provided, and the outer peripheral frame may be attached to the mounted device.

Instead of the above configuration, the transparent diaphragm may be attached to a transparent case constituting a sealed space so as to vibrate, and the transparent case may be attached to the front surface of the attached material.
In this case, if the transparent case is configured to be detachably attached to various mounted devices, versatility can be improved.

It is preferable that the compartment mounted device and the compartment constituent material to which the transparent diaphragm is attached are arranged in front of the front seat.
An instrument panel is arranged in front of the front seat, and various devices are arranged at a high density on the instrument panel, and the arrangement space is limited so as not to disturb the front visibility of the occupant. The Therefore, it is very difficult to take a speaker arrangement space in front of the front seat. However, in the present invention, as described above, since the diaphragm of the speaker is a transparent diaphragm and can be arranged at a position separated from the vibration driver via the pneumatic vibration transmission unit, the front side of the device attached to the instrument panel A transparent diaphragm can also be arranged on the windshield.

As described above, when the speaker is arranged in front of the occupant, sound is transmitted to the occupant from the front, so that the acoustic effect can be enhanced.
In addition, since the speaker is disposed on the vehicle body side in front of the front seat, wiring with the sound source device disposed on the vehicle body side becomes simple and easy. As described above, when the speaker is disposed on the side door. There is no need to lay an electric wire between the vehicle body and the door, which was necessary.

Examples of the vehicle-mounted device to which the transparent diaphragm is attached include an in-vehicle display device installed on an instrument panel, a combination panel including a meter display unit, or a rearview mirror.
Moreover, a windshield is mentioned as said vehicle-mounted structural material seen through.

With the above configuration, since the transparent diaphragm is arranged on the interior side of the in-vehicle display device, combination panel, rearview mirror, and windshield, the in-vehicle speaker does not occupy any other space and the space efficiency is greatly increased. improves. At this time, since the vehicle-mounted speaker can be seen through the back, the visibility of the vehicle-mounted display device, the combination panel, the rearview mirror, and the windshield is not hindered.
Further, when the combination panel is digitized in the future, it is possible to perform both image display and sound output by connecting the combination panel and the vehicle-mounted speaker.

  As is clear from the above description, the vehicle-mounted speaker of the present invention includes the transparent diaphragm, so that the back can be seen through the transparent diaphragm. Therefore, a vehicle-mounted speaker can be arranged on the front side of the vehicle-mounted display device or the like, and the degree of freedom of speaker arrangement can be improved. Further, since it is not necessary to arrange a speaker on the side door, it is not necessary to bridge an electric wire connecting the sound source device mounted on the vehicle body side and the speaker mounted on the side door from the vehicle body to the door. Furthermore, since the vehicle-mounted speaker is arranged in front of the front seat, sound can be emitted from the front of the occupant and the sound quality inside the vehicle is improved.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an automobile 10 according to the first embodiment, in which an instrument panel 11 is arranged on a front surface portion F of an indoor space S, and a car navigation device 12 is built in a center cluster of the instrument panel 11. A combination panel 13 is provided on the driver's seat side. The car navigation device 12 includes an in-vehicle display device 17 shared with the television screen shown in FIG. The combination panel 13 is a display screen provided with a speedometer and a tachometer.

  On-vehicle speakers 15 and 16 are arranged on the display surface sides of the car navigation device 12 and the combination panel 13 which are vehicle interior equipment. Specifically, as shown in FIG. 2, the vehicle-mounted speaker 15 includes a transparent diaphragm 18 that is disposed with a gap on the display surface side of the vehicle-mounted display device 17 of the car navigation device 12, a transparent diaphragm 18, and a vehicle-mounted display. A frame-shaped outer peripheral frame 19 that connects the device 17 to form a sealed space 20, a vibration driver 22 that is connected to the car navigation device 12 via the wiring 28, and a transmission that causes the vibration driver 22 to communicate with the sealed space 20. Port 21.

  The edge of the transparent diaphragm 18 is attached to the periphery of the front opening 19 a of the outer frame 19 so as to vibrate, and the rear opening 19 b of the outer frame 19 is closed by the in-vehicle display device 17. The vibration driver 22 is connected to the car navigation device 12 via a yoke 26 that forms a space communicating with the transmission port 21, a vibration plate 23 that is bonded to the inner surface of the yoke 26 so as to vibrate, and wiring 28. And a voice coil 25 whose lower end is fitted into the magnetic gap of the magnetic circuit 24 and whose upper end is coupled to the diaphragm 23.

The sound generation principle of the in-vehicle speaker 15 is that the output signal from the car navigation device 12 is transmitted to the magnetic circuit 24 of the vibration driver 22 via the wiring 28 and the force generated in the voice coil 25 by the magnetic field of the magnetic circuit 24 is generated. This is transmitted to the diaphragm 23. The pneumatic vibration from the diaphragm 23 is transmitted to the transparent diaphragm 18 using the transmission port 21 and the sealed space 20 as a pneumatic vibration transmission portion 27, and sound is propagated to the indoor space S.
The in-vehicle speaker 16 arranged on the display surface of the combination panel 13 has the same configuration as the in-vehicle speaker 15 shown in FIG. 2 and has a structure in which 17 is replaced with the combination panel 13. Further, no speaker is disposed on the side door 14 of the automobile 10.

  As described above, the diaphragm of the in-vehicle speaker 15 is the transparent diaphragm 18 so that the rear side can be seen through, so that the in-vehicle display device 12 and the combination panel 13 are mounted on the front side (display surface side). Speakers 15 and 16 can be arranged, and the degree of freedom of the arrangement position of in-vehicle speaker 15 is increased. In addition, since the transparent diaphragm 18 and the vibration driver 22 can be arranged at separate positions if they are connected via the pneumatic vibration transmission unit 27, the degree of freedom of the arrangement position of the transparent diaphragm 18 is further improved. Furthermore, since the in-vehicle speakers 15 and 16 can be arranged on the side of the vehicle body 29 near the car navigation device 12 that is a sound source device, the wiring 28 connected to the car navigation device 12 can be shortened. There is no need to hang an electric wire between the door 14 and the vehicle weight is reduced.

  In addition, since the in-vehicle speakers 15 and 16 are arranged in front of the in-vehicle display device 17 and the combination panel 13 provided in the instrument panel 11, the sound is heard from the front part F of the indoor space S, that is, from the front of the front seat. Can be output, and the acoustic quality in the vehicle can be improved. In the present embodiment, the sound source device to which the in-vehicle speakers 15 and 16 are connected is the car navigation device 12, but an audio device or various information processing devices provided on the instrument panel may be used as the sound source device. Needless to say.

FIG. 3 shows a second embodiment.
The difference from the first embodiment is that the sealed space 32 is surrounded with the transparent diaphragm 18 by the transparent case 31.
That is, by closing the front opening 31 b of the transparent case 31 with the transparent diaphragm 18, a sealed space 32 communicating with the transmission port 21 is formed in the transparent case 31. In addition, the edge part of the transparent diaphragm 18 is adhere | attached on the periphery of the front opening 31b of the transparent case 31 so that a vibration is possible. With this configuration, the sealed space 32 is secured by the back surface portion 31a of the transparent case 31 without using the front surface of the in-vehicle display device 17 as in the first embodiment. The vehicle-mounted speaker 30 can be handled freely. Further, since only the back surface portion 31 a of the transparent case 31, the sealed space 32, and the transparent diaphragm 18 are disposed on the front side of the in-vehicle display device 17, the in-vehicle display device 17 can be seen through through the passenger. be able to. Since other configurations are the same as those of the first embodiment, the same reference numerals are given and description thereof is omitted.

FIG. 4 shows a third embodiment.
The difference from the first embodiment is that an in-vehicle speaker 15 is installed on the display surface side of the rearview mirror 43.

  As shown in FIG. 4, the vehicle-mounted speaker 15 having the same configuration as that of the first embodiment is disposed on the display surface of the rearview mirror 43 that is suspended from the front side of the roof 45. The instrument panel 40 has a built-in sound source device 41 such as a car navigation device or an audio device, and a wiring 44 that connects the sound source device 41 and the vehicle-mounted speaker 15 is provided between the instrument panel 40 and the roof 45. It is routed through a pillar (not shown) erected on the side edge of the windshield 42. In-vehicle speakers may be the same as those in the second embodiment.

FIG. 5 shows a fourth embodiment.
The difference from the first embodiment is that a vehicle-mounted speaker 50 is installed on the indoor side surface of the windshield 42.

  As shown in FIG. 5, a vehicle-mounted speaker 50 having the same configuration as that of the first embodiment and having substantially the same area as the windshield 42 is disposed on the inner surface of the windshield 42. A sound source device 41 such as a car navigation device or an audio device is built in the instrument panel 40, and the sound source device 41 and the vehicle-mounted speaker 50 are connected via a wiring 51. In-vehicle speakers may be the same as those in the second embodiment.

FIG. 6 shows a fifth embodiment.
The difference from the first embodiment is that a speaker 5 is also arranged on the side door 4.
That is, an audio signal is transmitted from the car navigation device 12 to the speaker 5 of the side door 14 via the wire harness W / H that is routed from the vehicle body side to the side door 4 side. The configuration in which the in-vehicle speaker 15 is disposed on the front surface (display surface) of the in-vehicle display device 17 of the car navigation device 12 and the in-vehicle speaker 16 is disposed on the front surface of the combination panel 13 is the same as that of the first embodiment. It is.
In the case of this embodiment, although the wire harness W / H routed from the instrument panel 60 to the side door 4 cannot be reduced in size and weight, it is mounted on the vehicle mounted on the front face F of the indoor space S. Since sound can be output from both the speakers 15 and 16 and the speaker 5 of the side door 4, the acoustic quality of the indoor space S can be improved.

1 is a schematic diagram of an automobile showing a first embodiment of the present invention. It is principal part sectional drawing explaining a vehicle-mounted speaker. It is principal part sectional drawing explaining the vehicle-mounted speaker of 2nd Embodiment. It is drawing which shows 3rd Embodiment. It is drawing which shows 4th Embodiment. It is a schematic diagram of the motor vehicle which shows 5th Embodiment. It is a schematic diagram of the motor vehicle which shows a prior art example.

Explanation of symbols

10 Car 11, 31 Instrument panel 12, 32 Car navigation system (sound source equipment)
13 Combination panel (equipment installed in passenger compartment)
14 Side door 15, 16, 30, 50 Car-mounted speaker 17 Car-mounted display device (equipment installed in vehicle compartment)
18 Transparent diaphragm 19 Outer frame 20, 32 Sealed space 21 Transmission port 22 Vibration driver 27 Pneumatic vibration transmission unit 29 Car body 31 Transparent case 42 Windshield 43 Rearview mirror 44 Wiring S Indoor space

Claims (4)

An in-vehicle speaker connected to a sound source device mounted on an automobile,
A vibration driver connected to the sound source device to generate pneumatic vibration, and a transparent diaphragm disposed through the vibration driver and the pneumatic vibration transmission unit;
The in-vehicle speaker, wherein the transparent diaphragm is attached to the front side of a vehicle interior device or the front side of the interior surface of a vehicle compartment component. The transparent diaphragm is disposed with a sealed space through an outer peripheral frame on the front surface of the mounted material made of the on-vehicle equipment or the cabin component,
Alternatively, the in-vehicle speaker according to claim 1, wherein the transparent diaphragm is attached to a transparent case constituting a sealed space so as to be able to vibrate, and the transparent case is attached to a front surface of the attached material.   The in-vehicle speaker according to claim 1 or 2, wherein the compartment mounted device and the compartment constituent material to which the transparent diaphragm is attached are arranged in front of a front seat. The vehicle compartment mounted device to which the transparent diaphragm is attached is composed of an in-vehicle display device installed on an instrument panel, a combination panel including a meter display unit, or a rearview mirror,
The in-vehicle speaker according to any one of claims 1 to 3, wherein the see-through in-vehicle component is made of a windshield.

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