JP2006229815A - Speaker device and acoustic device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker device capable of improving a reproduction characteristic by expanding the low-band frequency side of a reproduction frequency band. <P>SOLUTION: The speaker device S1 is provided with a speaker body 1 and a first support mechanism 10 and a second support mechanism 20 provided at the top and the bottom, respectively, of the speaker body 1. In the speaker body 1, a speaker unit 3 is mounted in a hollow speaker box 2. The first support mechanism 10 has a cylindrical pillar-shaped part 11 and a mounting plate 12 provided at one end of the pillar-shaped part 11, and the other end of the pillar-shaped part 11 is mounted on the top face of the speaker box 2. The second support mechanism 20 has the same structure as the first support mechanism 10. In the speaker device S1, a space in the speaker box 2 is communicated with spaces in the pillar-shaped parts 11 and 21, and opening parts 11a and 21a are formed in the pillar-shaped parts 11 and 21 to construct the so-called bass reflex type speaker box. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a speaker device and an audio device including a plurality of speaker devices, and more particularly to a speaker device and an audio device suitable for sound reproduction in a place where the use environment changes, such as in a vehicle interior.

  In a conventional in-vehicle audio system, various conditions such as structure, layout, and tuning (characteristic adjustment) are set and selected so that optimum sound reproduction can be performed in the passenger compartment. For example, the speaker device is arranged at a place where the sound reproduction optimal for the listener in the vehicle cabin can be performed, and characteristics such as reproduction frequency-sound pressure characteristics are adjusted. Therefore, in the conventional in-vehicle audio system, for example, even when the vehicle door is opened and the reproduced sound is listened to outside the vehicle, the optimum sound reproduction cannot be performed for the listener outside the vehicle.

  In order to solve the above inconvenience, Patent Literature 1 and Patent Literature 2 disclose an acoustic device configured to be able to listen to an optimal sound both inside and outside the vehicle. The acoustic devices disclosed in these documents are provided with attachment shafts on the upper and lower parts of the speaker box to which the speaker unit is attached, respectively, and with attachment plates on the upper and lower frames of the rear hatch of the automobile, Each mounting shaft is configured to be rotatably mounted around the axis with respect to the mounting plates of the upper frame and the lower frame.

In this configuration, since the speaker box can rotate around the axis of the mounting shaft, the speaker unit can be directed into the vehicle interior or can be directed outside the vehicle. As a result, the listener can listen to the optimum sound both inside and outside the vehicle.
Japanese Utility Model Publication No. 5-80905 Japanese Utility Model Publication No. 6-25045

  The acoustic device disclosed in the above-mentioned patent document is only configured to change the direction of the speaker unit, and does not consider various characteristics such as reproduction frequency-sound pressure characteristics. In an in-vehicle audio system with various conditions set and selected so that optimal sound reproduction can be performed for the interior of the vehicle, if the playback sound is output outside the vehicle with the speaker unit facing outside the vehicle, Sound reproduction that is optimal for the listener cannot be performed. This is because the use environment of the speaker device is different between the case where sound reproduction is performed in the sealed vehicle interior and the case where sound reproduction is performed outside the opened vehicle.

  In addition, in the in-vehicle audio system, since the installation space is limited, it is difficult to use a large-diameter speaker unit, the sound pressure level in the low frequency band is low, and there is a tendency for bass to be insufficient.

  An object of the present invention is to provide a speaker device that can improve the characteristics of the low frequency side of the reproduction frequency band and can adjust the sound reproduction characteristics according to changes in the usage environment such as the installation location and the degree of indoor sealing. And providing an acoustic device.

The invention according to claim 1 is a speaker main body configured by attaching a speaker unit to a hollow speaker box;
A hollow columnar portion, a mounting portion is formed at one end of the columnar portion, and the other end of the columnar portion is provided with a supporting means that is mounted on the outer surface of the speaker box,
The speaker device is characterized in that a space in the speaker box communicates with a space in the columnar portion, and an opening is formed in the columnar portion.

  According to the present invention, the space in the speaker box and the space in the columnar part constituting the support means are communicated with each other, and the columnar part is formed with the opening, so that a so-called bass reflex type speaker box is provided. It has been configured. Thereby, compared with the case where the speaker box is a sealed type, the low frequency side of the reproduction frequency band can be expanded to improve the characteristics. Moreover, a speaker apparatus can be installed in a desired part by attaching the attachment part formed in the one end part of the columnar part of a support means to desired parts, such as a floor surface, a wall surface, and a ceiling surface.

The invention according to claim 2 is a speaker main body configured by attaching a speaker unit to a hollow speaker box;
A hollow columnar portion, and an attachment portion is formed at one end portion of the columnar portion, and the other end portion of the columnar portion includes two support means attached to the outer surface of the speaker box,
The columnar portions of the two support means are respectively attached to positions facing each other across the speaker box, and the space in the speaker box and the space in the columnar portion are communicated with each other. The speaker device is characterized in that an opening is formed in each columnar portion.

  According to the present invention, the space in the speaker box and the space in each columnar part constituting the two support means are communicated with each other, and the opening is formed in each columnar part. A speaker box of a type is configured. Thereby, compared with the case where the speaker box is a sealed type, the low frequency side of the reproduction frequency band can be expanded to improve the characteristics. In addition, since the two support means are provided at positions facing each other with the speaker main body interposed therebetween, the speaker device can be installed by attaching the mounting portions of the respective support means to the two facing mounting surfaces. As a result, it is possible to install the speaker device in a more stable and stable state as compared with the case where it is attached to one attachment surface. For example, when installing a speaker device near the back door of a wagon type car equipped with a back door, it can be installed with a mounting part on the floor surface and the ceiling surface respectively, so it is attached only to the floor surface or ceiling surface The speaker device can be installed in a more stable state than in the case.

The invention according to claim 3 is the speaker device according to claim 1 or 2,
The speaker main body may be rotatable around a central axis of the columnar portion.

  According to the present invention, it is possible to change the orientation by rotating the speaker body in a state in which the mounting portion at one end of the columnar portion is mounted on a desired mounting surface and the speaker device is installed. As a result, the orientation of the speaker unit can be adjusted according to the listening position of the listener, and sound reproduction can be performed in a suitable state. For example, when a speaker device is installed near the back door of a wagon-type vehicle equipped with a back door, when performing sound reproduction for a listener inside the vehicle, the speaker unit is set so that it faces the inside of the vehicle, On the other hand, when performing sound reproduction, it can be set so that the speaker unit faces the outside by opening the back door.

The invention according to claim 4 is the speaker device according to any one of claims 1 to 3,
The position of the opening formed in the columnar part can be changed in the length direction of the columnar part.

  According to the present invention, since the position of the opening can be changed along the length direction of the columnar part, the length from the speaker unit to the opening formed in the columnar part can be changed. If the length from the speaker unit to the opening becomes longer, the expansion width on the low frequency side of the reproduction frequency band increases. Therefore, when the expansion width on the low frequency side is to be increased, the opening is positioned away from the speaker unit. What should I do? Thereby, a suitable reproduction frequency band can be realized according to the use environment of the speaker device.

The invention according to claim 5 is the speaker device according to any one of claims 1 to 4,
The columnar part is configured to be extendable and contractible in the length direction.
According to the present invention, since the position of the opening can be changed by a relatively simple operation of expanding and contracting the columnar portion in the length direction, the user can easily change the position of the opening. Moreover, since the columnar part can be stretched and attached in accordance with the distance between the two opposing mounting surfaces, the degree of freedom of the mounting location can be expanded.

The invention according to claim 6 is the speaker device according to any one of claims 1 to 5,
A cylindrical member is attached to the opening of the columnar part.
According to the present invention, since the cylindrical member is attached to the opening of the columnar portion, the tip of the cylindrical member becomes the opening in the bass reflex type speaker box. This increases the length from the speaker unit to the opening (the tip of the cylindrical member). As the length from the speaker unit to the opening becomes longer, the expansion width on the lower side of the reproduction frequency band becomes larger. Therefore, it is possible to further improve the reproduction characteristics on the low frequency side in the speaker device.

The invention according to claim 7 is the speaker device according to claim 6,
The cylindrical member is detachable.
According to the present invention, since the columnar part is detachable, when it is desired to increase the expansion width of the low frequency side of the reproduction frequency band in the speaker device, a cylindrical member may be attached to the opening of the columnar part. Accordingly, it is possible to realize a suitable reproduction frequency band by selecting attachment and detachment of the cylindrical member according to the use environment of the speaker device.

The invention according to claim 8 is a speaker device installed in a room provided with an opening / closing member that communicates or blocks external space and indoor space,
Correction means for correcting the characteristics of the acoustic signal from the sound source and outputting it to the speaker unit;
Detecting means for detecting an open / closed state of the open / close member;
A speaker device comprising: control means for controlling a correction mode by the correction means based on a detection result of the detection means.

  According to the present invention, the characteristics of the acoustic signal from the sound source are corrected and given to the speaker unit based on the open / closed state of the indoor open / close member in which the speaker unit is arranged. For example, the degree of indoor space sealing may be obtained based on the open / closed state of the opening / closing member, and the frequency-sound pressure characteristics of the acoustic signal may be corrected based on the obtained degree of space sealing and given to the speaker unit. If the correction mode of the correction means is controlled, for example, when the opening / closing member is closed and the indoor airtightness is high, a signal only on the low frequency side where the signal on the high frequency side is cut is given to the speaker unit. When it is open and the indoor airtightness is low, signals in all frequency bands from low to high can be supplied to the speaker unit. In this way, the reproduction frequency band can be changed according to the open / close state of the indoor open / close member in which the speaker unit is arranged, for example, the use environment of the speaker device such as the indoor airtightness. Optimal sound reproduction according to the usage environment can be realized.

The invention according to claim 9 is a speaker device installed in a passenger compartment of a vehicle,
Correction means for correcting the characteristics of the acoustic signal from the sound source and outputting it to the speaker unit;
Detecting means for detecting an opening / closing state of the opening / closing portion of the vehicle;
And a control unit that controls a correction mode of the correction unit based on a detection result of the detection unit.

  According to the present invention, the characteristics of the acoustic signal from the sound source are corrected and given to the speaker unit based on the open / closed state of the open / close portion in the passenger compartment where the speaker unit is disposed. For example, the degree of airtightness in the passenger compartment may be obtained based on the open / closed state of doors and windows, and the frequency-sound pressure characteristic of the acoustic signal from the sound source may be corrected and given to the speaker unit based on the obtained degree of airtightness. If the correction mode of the correction means is controlled, for example, when the window or door is closed and the airtightness of the vehicle interior is high, such as when the vehicle is running, the signal on the low side is cut off. When the vehicle is stopped, doors and windows are open, and the airtightness in the passenger compartment is low, signals in all frequency bands from low to high are given to the speaker unit. be able to. As described above, since the reproduction frequency band can be changed according to the use environment of the speaker device such as the open / close state of the open / close portion of the vehicle interior where the speaker unit is disposed, for example, the degree of space sealing in the vehicle interior, Optimal sound reproduction according to the usage environment of the apparatus can be realized. For example, even when the back door of the vehicle is opened and the sound reproduced by the speaker device is listened to outside the vehicle (outdoors), optimal sound reproduction can be realized.

The invention according to claim 10 is a speaker device installed indoors with an openable and closable opening and closing member,
A speaker unit;
And a sound load member attached to a portion facing the speaker unit when the opening / closing member is closed.

  According to the present invention, when the open / close member is closed, the acoustic load member is disposed at a position facing the diaphragm of the speaker unit. As a result, the effective mass of the vibration system in the speaker unit increases, so that the low-band resonance frequency is lowered and the reproduction characteristics on the low-band side can be improved. That is, in the speaker unit, sound reproduction is performed with reproduction characteristics in which the high frequency component is cut and the low frequency component is enhanced. On the other hand, when the opening / closing member is opened, the acoustic load member is separated from the speaker unit, so that the speaker unit performs sound reproduction based on the original reproduction characteristics. As described above, when the open / close member is closed and the indoor space sealing degree is high, sound reproduction is performed with a reproduction characteristic in which the high-frequency side is cut and the low-frequency side is enhanced, and the open / close member is open and the indoor air tightness is closed. When is low, sound reproduction is performed with the original reproduction characteristics.

The invention which concerns on Claim 11 is a speaker apparatus installed in the vehicle interior of a vehicle,
A speaker unit;
And a sound load member attached to a portion facing the speaker unit when the vehicle door is closed.

According to the present invention, when the door is closed, the acoustic load member is disposed at a position facing the diaphragm of the speaker unit. Thus, in the speaker unit, sound reproduction is performed with reproduction characteristics in which the high frequency component is cut and the low frequency component is enhanced. On the other hand, when the door is opened, the acoustic load member is separated from the speaker unit, so that the speaker unit performs sound reproduction based on the original reproduction characteristics. In this way, when the door is closed and the space inside the vehicle is high, such as when the vehicle is running, the high frequency side is cut and the low frequency side is enhanced to reproduce sound and the vehicle stops. When the door is open and the space sealing degree in the passenger compartment is low, sound reproduction is performed with the original reproduction characteristics. Therefore, since the reproduction frequency characteristic can be changed according to the degree of sealing in the vehicle compartment where the speaker unit is arranged, that is, the open / closed state of the door, it is possible to realize optimal sound reproduction according to the use environment of the speaker device. Can do. For example, even when the back door of the vehicle is opened and the sound reproduced by the speaker device is listened to outside the vehicle (outdoors), optimal sound reproduction can be realized.

  The invention according to claim 12 arranges two speaker devices according to any one of claims 2 to 6 side by side, and attaches one attachment means of the first speaker device and one of the second speaker devices. The acoustic device is characterized by being connected to an attachment portion of the attachment means.

  According to the present invention, the two speaker main body portions are connected to each other, and the attachment means is provided on the outside of each speaker main body portion. Therefore, the two attachment means are attached to the two opposing attachment surfaces. By attaching the respective parts, two speaker main body parts can be installed side by side between the two attachment surfaces. Therefore, for example, the acoustic device can be installed such that the two speaker main body portions are arranged in the horizontal direction between the left and right wall surfaces in the vehicle interior.

  Further, when the speaker main body is rotatable around the central axis of the columnar portion of the attachment means, the direction can be changed by rotating the speaker main body with the acoustic device installed. As a result, the orientation of the speaker unit can be adjusted according to the listening position of the listener, and sound reproduction can be performed in a suitable state. For example, if a sound device is installed near the back door of a wagon type car equipped with a back door, when performing sound reproduction for the listener inside the car, set the speaker unit to face the inside of the car, On the other hand, when performing sound reproduction, it can be set so that the speaker unit faces the outside by opening the back door.

  Also, when the position of the opening can be changed, it is possible to increase the expansion width on the low frequency side of the reproduction frequency band by increasing the length from the speaker unit to the opening formed in the columnar portion. it can. Thereby, a suitable reproduction frequency band can be realized according to the use environment of the acoustic device. Furthermore, when the columnar part of the attachment means can be expanded and contracted in the length direction, the columnar part can be expanded and contracted according to the distance between the two opposing mounting surfaces, so the degree of freedom of the mounting location is expanded. can do.

  Moreover, when the cylindrical member is attached to the opening of the columnar portion, the expansion width on the low frequency side of the reproduction frequency band can be increased. Furthermore, when the cylindrical member is detachable, a suitable reproduction frequency band can be realized by selecting attachment and detachment of the cylindrical member according to the usage environment of the acoustic device.

  The invention according to claim 13 includes the first speaker device according to any one of claims 1 to 7 and the second speaker device according to any one of claims 8 to 11, wherein the first speaker device is a first speaker device. The acoustic apparatus is characterized in that the high frequency side is reproduced and the low frequency side is reproduced by the second speaker device.

  According to the present invention, when an acoustic device is arranged in a room provided with an opening / closing member that communicates or blocks the external space and the indoor space, the optimal sound according to the degree of sealing in the room, that is, the usage environment of the acoustic device. Reproduction can be realized. For example, when the acoustic device is arranged in the vehicle interior, it is possible to realize optimum sound reproduction according to the degree of sealing in the vehicle interior, that is, the usage environment of the acoustic device. When the first speaker device reproduces the high frequency side, for example, the middle / high tone, the low frequency side of the reproduction frequency band can be expanded. When the second speaker device reproduces low frequencies, for example, low sounds, the reproduction frequency band can be changed according to the degree of indoor sealing, that is, the use space of the acoustic device.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view of the speaker device S1 according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view of the speaker device S1, and FIG. 3 is a schematic diagram illustrating an installation example of the speaker device S1.

  The speaker device S1 includes a speaker main body 1, and a first support mechanism 10 and a second support mechanism 20 that are provided on the upper and lower parts of the speaker main body 1, respectively. The speaker body 1 is configured by attaching a speaker unit 3 to an opening 2a formed in a hollow speaker box 2 having a substantially rectangular parallelepiped shape, for example. The speaker unit 3 is a full range type speaker unit.

  The first support mechanism 10 includes a cylindrical columnar portion 11 and a mounting plate 12 that is a mounting portion provided at one end of the columnar portion 11, and the other end of the columnar portion 11 is on the upper surface of the speaker box 2. It is attached. Further, as shown in FIG. 2, the space 2 s in the speaker box 2 communicates with the space 11 s in the columnar portion 11, and an opening 11 a is formed in the columnar portion 11. Similarly, the second support mechanism 20 includes a cylindrical columnar portion 21 and a mounting plate 22 provided at one end of the columnar portion 21, and the other end of the columnar portion 21 is attached to the lower surface of the speaker box 2. It has been. Further, as shown in FIG. 2, the space 2 s in the speaker box 2 communicates with the space 21 s in the columnar portion 21, and an opening 21 a is formed in the columnar portion 21.

  In the speaker device S <b> 1, the space 2 s in the speaker box 2 communicates with the space 11 s in the columnar part 11 constituting the first support mechanism 10 and the space 21 s in the columnar part 21 constituting the second support mechanism 20. In addition, since the openings 11a and 21a are formed in the columnar portions 11 and 21, respectively, a so-called bass reflex type speaker box is configured. Thereby, compared with the case where the speaker box is a sealed type, the low frequency side of the reproduction frequency band can be expanded to improve the characteristics.

  Further, the speaker device S1 is installed at a desired part by attaching the attachment plate 12 of the first support mechanism 10 and the attachment plate 22 of the second support mechanism 20 to a desired part such as a floor surface, a wall surface, or a ceiling surface. Can do. Furthermore, since two support mechanisms, that is, the first support mechanism 10 and the second support mechanism 20 are provided at positions facing each other with the speaker main body 1 interposed therebetween, the first support mechanism 10 is provided on the two mounting surfaces facing each other. In addition, each of the mounting plates 12 and 22 of the second support mechanism 20 can be mounted to install the speaker device S1.

  For example, as shown in FIG. 3, when the speaker device S <b> 1 is installed near the back door 31 of the wagon type vehicle 30 including the back door 31, the mounting plate 12 of the first support mechanism 10 is attached to the ceiling surface 32, 2 The mounting plate 22 of the support mechanism 20 can be mounted and installed on the floor surface 33. In this case, it is possible to install the speaker device S1 in a more stable state as compared with the case where it is attached only to the ceiling surface 32 or the floor surface 33. Further, when the speaker device S1 is installed in the vehicle interior as shown in FIG. 3, the speaker device S1 is placed on the ground, for example, outside the vehicle if the mounting plates 12 and 22 are removed from the ceiling surface 32 and the floor surface 33. Can be used in

Although the specific attachment aspect of the attachment plates 12 and 22 with respect to attachment surfaces, such as the ceiling surface 32 and the floor surface 33, is not specifically limited, For example, the attachment or detachment operation | work which screws a fixing bolt with respect to an attachment surface is carried out. It is preferable to make the mounting mode easy to attach and detach, rather than the mounting mode that takes time and effort. As an attachment mode in which attachment / detachment work is easy, for example, a holding tool for holding the attachment plates 12 and 22 is provided on the attachment surface, and the attachment plates 12 and 22 are engaged (for example, fitted) to the holder. And the aspect attached so that attachment or detachment is possible can be used.

  Although FIG. 3 shows a state in which the speaker device S1 is installed so that the speaker unit 3 faces outward, when performing sound reproduction in the vehicle interior, the speaker device 3 faces the vehicle interior. What is necessary is just to install S1.

According to the first embodiment, the following effects can be obtained.
(1) In the first embodiment, since a bass-reflex type speaker box is configured, the low frequency side of the reproduction frequency band can be expanded as compared with the case where the speaker box is a sealed type. Thereby, even when the speaker unit 3 having a relatively small diameter is used, the low frequency side of the reproduction frequency band can be expanded, and sound reproduction with enhanced bass can be realized. As described above, since the reproduction characteristics on the low frequency side can be improved without increasing the size of the speaker device S1, the present embodiment is implemented when installing in a place where the installation space is limited, such as a vehicle interior. The embodiment of the speaker device S1 is effective.

  (2) In the first embodiment, the speaker device S1 can be installed at a desired site by attaching the mounting plates 12 and 22 to the desired site, so that the degree of freedom of installation location can be expanded. Further, since the speaker device S1 can be installed by attaching the two attachment plates 12 and 22 to the two opposite attachment surfaces, the speaker device can be firmly and stably compared to the case where the speaker device S1 is attached to one attachment surface. S1 can be attached.

  (3) When the speaker device S1 is installed in the vehicle interior, the speaker device S1 can be used in a state of being placed on the ground outside the vehicle, for example, by removing the mounting plates 12 and 22 from the ceiling surface 32 and the floor surface 33. So you can enjoy music outside the car.

Note that the first embodiment may be modified as follows.
The two mounting surfaces for mounting the speaker device S1 are not limited to the upper and lower surfaces (for example, the ceiling surface 32 and the floor surface 33 in the vehicle interior) facing in the vertical direction, but the left wall surface and the right wall surface facing in the left-right direction. But you can. That is, the speaker device S1 can be mounted if the two mounting surfaces are substantially parallel and facing each other. For example, when a large display is placed indoors on a display stand, the speaker device S1 may be installed between the floor and the bottom of the display when the left and right sides of the display protrude from the display stand. Good.

  The number of support mechanisms is not limited to two, and may be one or three or more. Even when two support mechanisms are provided, the position where the two support mechanisms are provided is not limited to the position facing each other with the speaker box 2 interposed therebetween. For example, the angle formed by the two support mechanisms about the speaker box 2 is 90 degrees. A support mechanism may be provided in each of the positional relationships, that is, the bottom or top and the right or left side.

  ・ If there are multiple support mechanisms, it is not necessary that all of them have openings. Similarly, not all support mechanisms need be in communication with the interior space of the speaker box. In this case, since the supporting mechanism that is not in communication is a simple support that does not affect the acoustic characteristics, the shape and internal structure thereof are arbitrary.

The shape of the opening is not limited to a circle, and may be a polygon or a slit. Further, the number of openings is not limited to one and may be plural. Furthermore, the position of the opening is not limited to the side surface of the support mechanism. For example, the end of the support mechanism may be opened to form an opening, and sound may be emitted therefrom. In this case, when the end (opening) is blocked by the mounting plates 12 and 22, a gap for sound emission is created between the mounting plates 12 and 22 by providing a protrusion on the opening. You may do it.

(Second Embodiment)
Next, a second embodiment of the present invention will be described with reference to FIGS. In addition, since 2nd Embodiment is the structure which changed the structure of the 1st support mechanism 10 of 1st Embodiment, the detailed description is abbreviate | omitted about the same part. FIG. 4 is a perspective view of the speaker device S2 according to the second embodiment of the present invention, and FIG. 5 is an enlarged cross-sectional view of the vicinity of the first support mechanism 10 of the speaker device S2.

  In the second embodiment, as shown in FIG. 4, the columnar portion 11 of the first support mechanism 10 is configured to be expandable and contractable in the length direction, and the position of the opening 11 a is along the length direction of the columnar portion 11. In addition to being configured to be changeable, a mounting plate (not shown) is configured to be detachable from the columnar portion 11. As shown in FIG. 5, the columnar portion 11 of the first support mechanism 10 is inserted into a cylindrical base end portion 13 protruding from the upper portion of the speaker box 2 and slidably inserted into the base end portion 13. And a movable portion 14. The movable portion 14 is a bottomed cylindrical member, and is inserted into the base end portion 13 so that the bottom surface 14a is on the outside. An opening 11 a is formed on the side of the movable portion 14. By moving the movable portion 14 in the axial direction R1, the length of the columnar portion 11 can be changed, and thereby the length from the speaker unit 3 to the opening 11a of the columnar portion 11 can be changed.

  When the length from the speaker unit 3 to the opening 11a of the columnar portion 11 is increased, the expansion width on the low frequency side of the reproduction frequency is increased, so that it is desired to increase the low frequency side to increase the low frequency. 5, the movable portion 14 may be pulled out from the base end portion 13 and the length from the speaker unit 3 to the opening 11a of the columnar portion 11 may be increased as indicated by a two-dot chain line in FIG. Therefore, for example, when the speaker device S2 mounted in the vehicle interior is removed and used outside the vehicle, the desired sound reproduction characteristics can be realized by adjusting the length of the columnar portion 11.

  In addition, you may make it move the movable part 14 in the state which attached the mounting plate (not shown) to the bottom face 14a of the movable part 14. FIG. Further, the movable portion 14 may be configured by forming the opening portion 11a on the side portion of a simple cylindrical member. However, in this configuration, since the upper end portion of the movable portion 14 is also an opening portion, the effect of improving the reproduction frequency band is reduced as compared with the case of only the side opening portion 11a. Therefore, as shown in FIGS. 4 and 5, it is preferable to form the opening 11a in the side portion of the bottomed cylindrical member. In addition, when the movable portion 14 is configured using a simple cylindrical member, the movable portion is moved with the mounting plate mounted on the movable portion 14, or the mounting plate is detached and another lid is attached. By taking a method such as covering the upper end portion of the movable portion 14 with a member, a good improvement effect of the reproduction frequency band can be obtained.

Therefore, according to the second embodiment, the following effects can be obtained in addition to the effects described in the first embodiment.
(1) In the second embodiment, since the length from the speaker unit 3 to the opening 11a formed in the columnar portion 11 can be changed, a suitable reproduction frequency band is set according to the use environment of the speaker device S2. Can be realized. For example, when it is desired to increase the bass, if the movable portion 14 is pulled out from the base end portion 13 and the length from the speaker unit 3 to the opening portion 11a is increased, the expansion width on the reproduction frequency band side is increased. The bass is enhanced.

  (2) The position of the opening 11a can be changed by an operation of expanding and contracting the columnar portion 11, specifically, an operation of inserting and removing the movable portion 14 from the base end portion 13, so that the user can perform a simple operation. The position of the opening 11a can be changed.

(3) When installing the speaker device S2 between two mounting surfaces facing each other, the columnar portion 11 can be stretched and mounted according to the distance between the two mounting surfaces, so the degree of freedom of the mounting location is expanded. can do.

In addition, you may change this embodiment as follows.
As a structure for expanding and contracting the columnar portion 11, a screw formed on the inner peripheral portion of the base end portion 13 and a screw formed on the outer peripheral portion of the movable portion 14 are screwed together, and the movable portion 14 is rotated. Accordingly, it is possible to use a structure in which the columnar portion 11 is expanded and contracted by changing the position in the axial direction R1. Moreover, you may use the structure which forms the columnar part 11 in a bellows shape and expands / contracts the columnar part 11.

  As a structure for changing the position of the opening 11a, a plurality of openings 11a having different positions in the length direction are previously formed in the columnar portion 11, and other openings other than the desired opening are covered with the lid member. It is possible to use a structure in which the position of the opening is changed so as to be covered with. Further, the first cylindrical member is arranged so as to be rotatable in the circumferential direction in a state in which the inner peripheral surface thereof is in sliding contact with the outer peripheral surface of the second cylindrical member to constitute the columnar portion 11, and the first cylinder When the member is rotated, the position of the opening 11a is adjusted such that one of the plurality of openings 11a formed in the second tubular member is exposed from the long hole formed in the first tubular member. A structure to be changed can also be used. In this structure, a plurality of openings 11a having different positions in the length direction and circumferential positions are formed in the side portion of the first cylindrical member, and in the side portion of the second cylindrical member, This can be realized by forming a long hole having substantially the same length as the second cylindrical member and a length in the circumferential direction substantially the same as that of the opening 11a.

  In the above embodiment, the position of the opening 11a of the columnar portion 11 of the first support mechanism 10 can be changed, but the position of the opening 21a of the columnar portion 21 of the second support mechanism 20 can be changed. It may be configured. Moreover, you may comprise so that a position can change the opening part 11a of the 1st support mechanism 10, and the opening part 21a of the 2nd support mechanism 20 together.

  -When the structure which expands and contracts a support mechanism is used, the expansion-contraction operation | movement of a support mechanism can also be utilized for attachment (fixation) of a speaker apparatus. For example, when a screw structure is used for expansion and contraction, the speaker device can be fixed with an appropriate force (by functioning as a so-called pulling bar) by tightening or loosening the screw so that the length of the support mechanism matches the installation location. can do.

  In this case, the support mechanism for adjusting the length may be an independent support mechanism that is not in communication with the internal space of the speaker box so as not to affect the acoustic characteristics. For example, when two support mechanisms are provided, one is configured to communicate with the interior space of the speaker box and used to adjust the acoustic characteristics, and the other is configured to be independent without communicating with the interior space of the speaker box. Each length may be individually adjustable. If there is only one support mechanism, a communication part communicating with the internal space of the speaker box is formed to adjust the acoustic characteristics, and the extension that is not spatially communicated from the tip of the communication part. A portion may be configured to form one support mechanism, and the lengths of the communication portion and the extension portion may be adjusted independently. In this case, since the extended portion is a simple support, its shape and internal structure are arbitrary.

(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIG. In addition, since 3rd Embodiment is the structure which added the cylindrical member 15 as a new member to 1st Embodiment, the detailed description is abbreviate | omitted about the same part. FIG. 6 is a perspective view of the speaker device S3 according to the third embodiment of the present invention.

  In the third embodiment, as shown in FIG. 6, the cylindrical member 15 is attached to the columnar portion 11 so as to communicate with the opening 11a formed in the columnar portion 11 of the first support mechanism 10, and the speaker device S3. Is configured. The cylindrical member 15 is detachable from the opening 11a. The cylindrical member 15 can be made detachable by a fitting structure in which a protrusion formed at one end of the cylindrical member 15 is fitted into the opening 11a.

  By attaching the cylindrical member 15 so as to communicate with the opening 11a of the columnar portion 11, the tip portion 15a of the cylindrical member 15 becomes an opening in the bass reflex type speaker box. As a result, the length from the speaker unit 3 to the opening (the tip portion 15a of the cylindrical member 15) can be increased. If the length from the speaker unit 3 to the opening 11a is increased, the expansion width on the low frequency side of the reproduction frequency band is increased. Therefore, when the low frequency side expansion width is to be increased to enhance the bass, the columnar portion The cylindrical member 15 may be attached to the 11 openings 11a.

  Since the cylindrical member 15 is detachable, a suitable reproduction frequency band can be realized by selecting attachment and detachment of the cylindrical member 15 according to the use environment of the speaker device S3. Therefore, for example, when the speaker device S3 attached in the vehicle interior is removed and used outside the vehicle, the cylindrical member 15 may be attached to enhance the bass. Needless to say, the cylindrical member 15 may be mounted when it is mounted in the vehicle interior.

  If the cylindrical member 15 is configured so as to be held on the side of the speaker box 2, for example, the cylindrical member 15 can be prevented from being lost and the cylindrical member 15 can be easily attached and detached. become.

Therefore, according to the third embodiment, the following effects can be obtained in addition to the effects described in the first embodiment.
(1) In the third embodiment, by attaching the tubular member 15 so as to communicate with the opening portion 11a of the columnar portion 11, the length from the speaker unit 3 to the opening portion (the tip portion 15a of the tubular member 15) is long. Since the length can be increased, it is possible to increase the bass by increasing the expansion range on the low frequency side of the reproduction frequency band according to the use environment of the speaker device S3. Further, since the cylindrical member 15 is detachable, it is possible to realize a suitable reproduction frequency band by selecting attachment and detachment of the cylindrical member 15 according to the use environment of the speaker device S3.

  (2) In the third embodiment, since the cylindrical member 15 can be mounted by being fitted to the opening 11a, the user can easily perform the mounting operation and the detaching operation of the cylindrical member 15. be able to.

In addition, you may change this embodiment as follows.
-Removal of a cylindrical member is not necessarily required, and a cylindrical member and a support | pillar part can also be formed integrally. For example, the column portion may be bent halfway, the tip end may be opened, and sound may be emitted from there. In this case, an extended portion that functions as a support may be provided separately from the bent portion so that the function as a support is not hindered. Since the extended portion is a simple support that does not affect the acoustic characteristics, the shape and internal structure thereof are arbitrary.

  A single cylindrical member 15 may be selected from a plurality of cylindrical members having different lengths and attached to the opening 11a. In this case, the expansion width on the low frequency side of the reproduction frequency band can be adjusted stepwise. Moreover, you may make it equip the opening part 11a with the cylindrical member which can be expanded-contracted. In this case, the expansion width on the low frequency side of the reproduction frequency band can be continuously adjusted.

-As a structure which attaches the cylindrical member 15 to the opening part 11a of the columnar part 11 so that attachment or detachment is possible, not only a fitting structure but a screwing structure and another engagement structure can be used.
In the above embodiment, the cylindrical member 15 is attached to the opening 11 a of the first support mechanism 10, but the cylindrical member 15 is attached to the opening 21 a of the second support mechanism 20. It may be configured. Moreover, you may comprise so that the cylindrical member 15 may be attached with respect to the opening part 11a of the 1st support mechanism 10, and the opening part 21a of the 2nd support mechanism 20, respectively. Furthermore, in the speaker device S2 of the second embodiment, the cylindrical member 15 may be provided detachably in the opening 11a.

(Fourth embodiment)
Next, a fourth embodiment of the present invention will be described with reference to FIGS. In addition, since 4th Embodiment is the structure which changed the structure of 1st Embodiment, the detailed description is abbreviate | omitted about the same part. FIG. 7 is a perspective view of a speaker device S4 according to the fourth embodiment of the present invention, and FIG. 8 is a cross-sectional view of the speaker device S4.

  In the fourth embodiment, as shown in FIG. 7, the first support mechanism 10 and the second support mechanism 20 are provided so that the central axes L1 and L2 are positioned on the same straight line, and the speaker body 1 is indicated by an arrow A1. As shown in FIG. 2, the lens is configured to be rotatable around the central axis L1, L2. As shown in FIG. 8, the columnar portion 11 of the first support mechanism 10 is a bottomed cylindrical member, and is attached to the upper portion of the speaker box 2 so that the bottom surface side end portion 11 b is on the outside. An opening 11 a is formed on the side of the columnar portion 11. A cylindrical projecting portion 2b is formed on the upper portion of the speaker box 2, and an opening-side end portion 11c of the columnar portion 11 is attached to the projecting portion 2b. An annular engagement protrusion 2c is formed on the outer peripheral portion of the protrusion 2b, and an engagement recess 11d is formed along the circumferential direction on the inner peripheral portion of the opening-side end portion 11c of the columnar portion 11. The columnar portion 11 is attached to the speaker box 2 by fitting the engagement protrusion 2c into the engagement recess 11d.

  On the other hand, the bottom side end portion 11b of the columnar portion 11 is pivotally supported by the mounting plate 12 so as to be rotatable around the central axis L1. A cylindrical support portion 12a is formed on the surface of the mounting plate 12, and a bottom surface side end portion 11b of the columnar portion 11 is pivotally supported by the support portion 12a. An annular guide protrusion 12b is formed along the circumferential direction on the inner peripheral portion of the support portion 12a of the mounting plate 12, and the outer peripheral portion of the bottom side end portion 11b of the columnar portion 11 extends along the circumferential direction. A guide groove 11e is formed. By engaging the guide protrusion 12b with the guide groove 11e, the columnar portion 11 is pivotally supported by the mounting plate 12 so as to be rotatable around the central axis L1. Note that the structure of the second support mechanism 20 is the same as the structure of the first support mechanism 10, and thus the description thereof is omitted.

  With the configuration as described above, the speaker main body 1 is rotated together with the columnar portions 11 and 21 to change the direction in a state where the mounting plates 12 and 22 are attached to desired mounting surfaces and the speaker device S4 is installed. be able to.

Therefore, according to the fourth embodiment, the following effects can be obtained in addition to the effects described in the first embodiment.
(1) Since the orientation of the speaker unit 3 can be changed by rotating the speaker main body 1 with the speaker device S4 installed, the orientation of the speaker unit 3 can be adjusted according to the listening position of the listener. As a result, sound reproduction can be performed in a suitable state. For example, when the speaker device S4 is installed in the vicinity of a back door of a wagon type vehicle equipped with a back door, the speaker unit 3 is set so that the speaker unit 3 faces the inside of the vehicle when performing sound reproduction for a listener in the vehicle. When opening and performing sound reproduction for a listener outside the vehicle, the speaker unit 3 can be set to face outside the vehicle.

In addition, you may change this embodiment as follows.
In the above-described embodiment, the speaker main body 1 and the columnar portion 11 are configured to be integrally rotatable. However, only the speaker main body 1 may be configured to be rotatable. In this case, the bottom end 11b of the columnar part 11 may be fixed to the mounting plate 12, and the speaker box 2 may be pivotally supported by the opening end 11c. The structure between the columnar part 21 and the speaker main body 1 in the second support mechanism 20 is the same as the structure between the columnar part 11 and the speaker main body 1 in the first support mechanism 10. Furthermore, in the speaker devices S1 and S2 of the first and second embodiments, the speaker body 1 may be configured to be rotatable around the central axes L1 and L2 of the columnar portions 11 and 21.

(Fifth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIG. In addition, since 5th Embodiment is the structure which uses speaker apparatus S1 of 1st Embodiment, the detailed description is abbreviate | omitted about the same part. FIG. 9 is a front view showing an appearance of an acoustic device S5 according to the fifth embodiment of the present invention.

  In the fifth embodiment, as shown in FIG. 9, the two speaker devices S1a and S1b of the first embodiment are arranged side by side, and the distal end portion of the columnar portion 11 of the first support mechanism 10a of the first speaker device S1a. And the tip of the columnar portion 11 of the first support mechanism 10b of the second speaker device S1b are connected to form an acoustic device S5.

  The acoustic device S5 is configured by connecting two speaker body portions 1a and 1b, and has support mechanisms 20a and 20b provided outside the speaker body portions 1a and 1b, respectively. Thus, two speaker main-body parts 1a and 1b can be installed side by side between the two attachment surfaces 5 and 6 which oppose.

Therefore, according to the fifth embodiment, the following effects can be obtained in addition to the effects described in the first embodiment.
(1) In the above embodiment, since the two speaker main body portions 1a and 1b can be installed side by side between the two mounting surfaces 5 and 6, for example, the two speaker main body portions 1a and The acoustic device S5 can be installed so that 1b is arranged in the horizontal direction.

In addition, this embodiment can be changed as follows.
The acoustic device S5 may be configured using the speaker device S2 of the second embodiment, may be configured using the speaker device S3 of the third embodiment, or the speaker of the fourth embodiment. You may comprise using apparatus S4. Further, the acoustic device S5 may be configured by connecting the first speaker body 1a and the second speaker body 1b with one connecting member.

(Sixth embodiment)
Next, a fifth embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a schematic diagram showing the configuration of the speaker device S6 according to the sixth embodiment of the present invention, and FIG. 11 is a graph showing the reproduction frequency-sound pressure characteristics of the speaker device S6.

  The speaker device S6 is a speaker device disposed in the vehicle interior of the vehicle, and includes a speaker body 41, a correction circuit 42, an amplifier 43, a door opening / closing sensor 44, a window opening / closing sensor 45, and a control circuit 46. It is configured with. The speaker body 41 is configured by attaching a speaker unit 41b to a speaker box 41a, and is disposed, for example, in the vicinity of the back door 31 in the vehicle interior so that the speaker unit 41b faces the back door 31. The speaker unit 41b is a woofer unit that reproduces bass sounds.

  The correction circuit 42 corrects and outputs the frequency-sound pressure characteristics of the acoustic signal from the sound source 47. In this embodiment, a low-pass filter is provided as the simplest configuration, and two correction modes of selectively outputting a high-frequency component of the input acoustic signal or outputting it as they are are selectively executed. The amplifier 43 amplifies the acoustic signal output from the correction circuit 42 and supplies it to the speaker unit 41b.

  The door open / close sensor 44 detects an open / close state of a vehicle door (including the back door 31) and outputs a detection signal. The window opening / closing sensor 45 detects the opening / closing state of the window of the vehicle and outputs a detection signal. The control circuit 46 calculates the degree of space sealing in the vehicle interior based on the detection signals of the door opening / closing sensor 44 and the window opening / closing sensor 45, and controls the correction mode in the correction circuit 42 according to the calculated space sealing degree. The space sealing degree is an index indicating the degree of sealing of the space in the vehicle interior, for example, the lowest value of the space sealing degree when all doors and windows are open, and as the doors and windows are closed The space sealing degree becomes high, and the space sealing degree when all doors and windows are closed is the highest value.

In addition to the speaker main body 41 having a speaker unit (woofer unit) 41b, a speaker device (for example, a tweeter unit that reproduces middle / high sounds) is provided in the vehicle interior.
The sound signal from the sound source 47 is amplified by an amplifier (not shown) and supplied to a speaker device having a tweeter unit.

  In the above-described speaker device S6, the frequency-sound pressure characteristic of the acoustic signal from the sound source 47 is corrected based on the degree of airtightness in the passenger compartment in which the speaker body 41 is disposed, and the speaker unit (woofer unit) 41b is corrected. Supplied. Therefore, if the correction mode of the acoustic signal by the correction circuit 42 is controlled according to the space sealing degree in the passenger compartment, the reproduction frequency band in the speaker unit 41b can be changed according to the use environment of the speaker device S6.

  For example, when windows and doors are closed and the airtightness in the vehicle interior is high, such as when listening to music in the vehicle while the vehicle is running, the acoustic signal input in the correction circuit 42 is passed through a low-pass filter. To the speaker unit 41b. As a result, as shown by a solid line La in FIG. 11A, the speaker unit 41b reproduces only the low-frequency signal from which the high-frequency signal shown by the dotted line is cut. Further, when the degree of airtightness in the passenger compartment is low, such as when the vehicle is stopped and the back door 31 is opened to listen to music outdoors, the acoustic signal input in the correction circuit 42 is not passed through the low-pass filter. This is given to the speaker unit 41b. As a result, as shown by the solid line Lb in FIG. 11B, the speaker unit 41b reproduces the frequency signal from which the high frequency signal is not cut. Note that the acoustic signal supplied to the speaker device (not shown) that reproduces the above-described middle and high sounds is indicated by a solid line Lc in FIG.

According to the sixth embodiment, the following effects can be obtained.
(1) Since the reproduction frequency band by the speaker unit 41b can be changed according to the degree of space sealing in the vehicle interior in which the speaker main body 41 is arranged, that is, the use environment of the speaker device S6, the optimum according to the use environment Sound reproduction can be realized. For example, even when the back door 31 of the vehicle is opened and the reproduced sound from the speaker device S6 is listened to outside the vehicle (outdoors), optimal sound reproduction can be realized.

In addition, this embodiment can be changed as follows.
In the above embodiment, opening / closing of doors and windows is detected, but other things that substantially affect the degree of sealing, such as opening / closing of a sunroof or introduction of outside air from an air conditioner, may be detected. Further, since the indoor volume varies depending on the number of passengers and the amount of luggage even with the same degree of sealing, the parameter of the sealing degree may be corrected according to the number of passengers and the amount of luggage. For example, even when the windows are open to the same extent, the degree of sealing may be changed between one and four passengers (the larger the number of passengers, the larger or smaller the degree of sealing) ). In order to detect the number of passengers, in the case of a vehicle, a seat belt wearing situation for each seat, a pressure sensor provided in the seat, or the like can be used. It is also possible to estimate the total amount of cargo and passengers from the degree of suspension sinking. Furthermore, the degree of sealing may be corrected by detecting what substantially affects the transmission characteristics of the sound, such as the occupant arrangement state and the reclining angle of the seat.

  The installation location of the speaker device S6 is not limited to the vehicle interior, and the speaker device S6 may be disposed in a room provided with an opening / closing member that communicates or blocks the external space and the indoor space.

  The correction circuit 42 may be composed of a plurality of low-pass filters having different characteristics, and the low-pass filter to be used may be changed according to the degree of sealing. Further, the characteristic may be changed by changing the resistance value of the resistance element constituting the low-pass filter or the capacitance of the capacitor, and the characteristic may be changed according to the degree of sealing.

  The correction circuit 42 may be configured with a high-pass filter so that the low-frequency signal is cut and the high-frequency signal is passed. Further, the correction circuit 42 may be configured by combining a low-pass filter and a high-pass filter. Further, the correction circuit 42 may be configured using a digital filter.

  In the above embodiment, the case where the woofer unit is used as the speaker unit 41b for reproducing the low sound is described. However, the speaker unit for reproducing other sound ranges, for example, the squawker unit for reproducing the middle sound and the tweeter for reproducing the middle / high sound. The speaker device S6 may be configured using a unit.

(Seventh embodiment)
Next, a seventh embodiment of the present invention will be described with reference to FIG. 12A and 12B are schematic views showing the configuration of the speaker device S7 according to the seventh embodiment of the present invention, in which FIG. 12A shows a state in which the back door 31 of the vehicle is opened, and FIG. 12B shows the back door 31 of the vehicle. The closed state is shown.

  The speaker device S <b> 7 is a speaker device installed in a vehicle interior of a vehicle including a back door 31, and includes a speaker main body 41 and an acoustic load member 48. The speaker body 41 is configured by attaching a speaker unit 41b to a speaker box 41a, and is arranged so that the diaphragm of the speaker unit 41b faces the closed back door 31. The speaker unit 41b is a woofer unit that reproduces bass sounds.

  The acoustic load member 48 is attached to a portion facing the speaker unit 41b when the back door 31 is closed. The portion of the acoustic load member 48 that faces the speaker unit 41b is formed in a substantially conical shape so that the distance from the diaphragm of the speaker unit 41b is substantially equal.

  Note that an acoustic signal from a sound source (not shown) is amplified by an amplifier and supplied to the speaker unit 41b. In addition to the speaker main body 41 provided with a speaker unit (woofer unit) 41b, a speaker device (not shown) provided with a tweeter unit that reproduces medium and high sounds, for example, is installed in the vehicle interior. The sound signal from the sound source is also amplified by an amplifier and supplied to a speaker device having a tweeter unit.

In the above-described speaker device S7, when the back door 31 is closed, the acoustic load member 48 is disposed at a position facing the diaphragm of the speaker unit 41b of the speaker body 41. Thereby, in the speaker unit 41b, sound reproduction is performed with a reproduction characteristic in which the high frequency signal is cut and the low frequency signal is enhanced (see the solid line La in FIG. 11A). On the other hand, since the acoustic load member 48 is separated from the speaker unit 41b when the back door 31 is opened, the speaker unit 41b performs sound reproduction based on the original reproduction characteristics (see the solid line Lb in FIG. 11B).

  In this way, when the back door 31 is closed and the space inside the vehicle compartment is high, such as when the vehicle is running, sound reproduction is performed with a reproduction characteristic in which the high frequency side is cut and the low frequency side is enhanced. On the other hand, when the vehicle is stopped, the back door 31 is open, and the airtightness in the passenger compartment is low, sound reproduction is performed with the original reproduction characteristics.

According to the seventh embodiment, the following effects can be obtained.
(1) In the above embodiment, the reproduction frequency characteristics can be changed according to the degree of sealing in the vehicle compartment in which the speaker main body 41 is arranged, that is, the open / closed state of the back door 31, and therefore the usage environment of the speaker device S7. The optimal sound reproduction according to the can be realized. For example, even when the back door 31 of the vehicle is opened and the reproduced sound from the speaker device S7 is listened to outside the vehicle (outdoors), optimal sound reproduction can be realized.

In addition, this embodiment can be changed as follows.
In the above embodiment, the acoustic load member is provided on the door. However, any configuration is acceptable as long as the acoustic load is loaded or released according to the opening / closing of the opening / closing member. For example, a speaker main body (speaker unit) is provided on the door side. An acoustic load member may be provided on each side of the passenger compartment so that they face each other when the door is closed. In addition, the opening / closing member and the acoustic load member are not necessarily mechanically connected. For example, the opening / closing of a door or the like is detected by a sensor, and the distance between the acoustic load member and the speaker unit is determined based on the detection result. It may be variable by a motor or the like.

  The installation location of the speaker device S7 is not limited to the vehicle interior, and the speaker device S7 may be arranged in a room provided with an openable / closable member.

(Eighth embodiment)
Next, an eighth embodiment of the present invention will be described. An acoustic device according to an eighth embodiment of the present invention includes a first speaker device that reproduces a high frequency side and a second speaker device that reproduces a low frequency side, and is installed in a vehicle interior. used. One of the speaker devices S1 to S4 of the first to fourth embodiments is used as the first speaker device, and the speaker device S7 of the seventh embodiment is used as the second speaker device.

  In the above-described acoustic device, when the acoustic device is arranged in the vehicle interior, it is possible to realize optimal sound reproduction according to the degree of sealing in the vehicle interior, that is, the sound reproduction environment in the vehicle interior. When the first speaker device reproduces the high frequency side, for example, the middle / high tone, the low frequency side of the reproduction frequency band can be expanded. When the second speaker device reproduces a low frequency side, for example, a low sound, the reproduction frequency band can be changed according to the degree of sealing in the vehicle compartment, that is, the sound reproduction environment. As described above, according to the eighth embodiment, it is possible to perform sound reproduction optimal for a sound reproduction environment.

  The installation location of the acoustic device is not limited to the vehicle interior, and the acoustic device may be arranged in a room provided with an opening / closing member that communicates or blocks the external space and the indoor space.

The perspective view of speaker apparatus S1 which is 1st Embodiment of this invention. Sectional drawing of speaker apparatus S1. The schematic diagram which shows the example of installation of speaker apparatus S1. The perspective view of speaker apparatus S2 which is 2nd Embodiment of this invention. Sectional drawing which expands and shows the 1st support mechanism 10 vicinity of speaker apparatus S2. The perspective view of speaker apparatus S3 which is 3rd Embodiment of this invention. The perspective view of speaker apparatus S4 which is 4th Embodiment of this invention. Sectional drawing of speaker apparatus S4. The front view which shows the external appearance of acoustic apparatus S5 which is 5th Embodiment of this invention. The schematic diagram which shows the structure of speaker apparatus S6 which is 6th Embodiment of this invention. (A) And (b) is a graph which shows the reproduction frequency-sound pressure characteristic of speaker apparatus S6. (A) And (b) is a schematic diagram which shows the structure of speaker apparatus S7 which is 7th Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Speaker main-body part, 1a ... 1st speaker main-body part, 1b ... 2nd speaker main-body part, 2 ... Speaker box, 2s ... Space, 3 ... Speaker unit, 5, 6 ... Mounting surface, 10 ... 1st support Mechanism: 11 ... Columnar portion, 11a ... Opening, 11s ... Space, 12 ... Mounting plate, 15 ... Cylindrical member, 20 ... Second support mechanism, 21 ... Columnar portion, 21a ... Opening, 21s ... Space, 22 ... Mounting plate, 31 ... back door, 41 ... speaker body, 41a ... speaker box, 41b ... speaker unit, 42 ... correction circuit, 43 ... amplifier, 44 ... door opening / closing sensor, 45 ... window opening / closing sensor, 46 ... control circuit, 47 ... Sound source, 48 ... Sound adding member, S1, S2, S3, S4, S6, S7 ... Speaker device, S1a ... First speaker device, S1b ... Second speaker device, S5 ... Sound device, R1 ... Axis Direction, L1, L2 ... central axis.

Claims (13)

A speaker main body configured by attaching a speaker unit to a hollow speaker box;
A hollow columnar portion, a mounting portion is formed at one end of the columnar portion, and the other end of the columnar portion is provided with a supporting means that is mounted on the outer surface of the speaker box,
A speaker device, wherein a space in the speaker box and a space in the columnar part are communicated with each other, and an opening is formed in the columnar part. A speaker main body configured by attaching a speaker unit to a hollow speaker box;
A hollow columnar portion, and an attachment portion is formed at one end portion of the columnar portion, and the other end portion of the columnar portion includes two support means attached to the outer surface of the speaker box,
The columnar portions of the two support means are respectively attached to positions facing each other across the speaker box, and the space in the speaker box and the space in the columnar portion are communicated with each other. A speaker device, wherein an opening is formed in each columnar portion. The speaker device according to claim 1 or 2,
The speaker device, wherein the speaker main body is rotatable around a central axis of the columnar portion. The speaker device according to any one of claims 1 to 3,
The speaker device, wherein the position of the opening formed in the columnar part can be changed in the length direction of the columnar part. The speaker device according to any one of claims 1 to 4,
The speaker device, wherein the columnar portion is configured to be extendable and contractible in the length direction. The speaker device according to any one of claims 1 to 5,
A speaker device, wherein a cylindrical member is attached to an opening of the columnar portion. The speaker device according to claim 6, wherein
A speaker device, wherein the tubular member is detachable. A speaker device installed in a room provided with an opening / closing member that communicates or blocks external space and indoor space,
Correction means for correcting the characteristics of the acoustic signal from the sound source and outputting it to the speaker unit;
Detecting means for detecting an open / closed state of the open / close member;
A speaker device comprising: control means for controlling a correction mode by the correction means based on a detection result of the detection means. A speaker device installed in a passenger compartment of a vehicle,
Correction means for correcting the characteristics of the acoustic signal from the sound source and outputting it to the speaker unit;
Detecting means for detecting an opening / closing state of the opening / closing portion of the vehicle;
And a control unit that controls a correction mode of the correction unit based on a detection result of the detection unit. A speaker device installed in a room with an openable openable member,
A speaker unit;
And a sound load member attached to a portion facing the speaker unit when the opening / closing member is closed. A speaker device installed in a passenger compartment of a vehicle,
A speaker unit;
And a sound load member attached to a portion facing the speaker unit when the vehicle door is closed.   Two speaker devices according to any one of claims 2 to 7 are arranged side by side, an attachment portion of one attachment means of the first speaker device, and attachment of one attachment means of the second speaker device An acoustic device characterized by being connected to a part.   A first speaker device according to any one of claims 1 to 7 and a second speaker device according to any one of claims 8 to 11, wherein the first speaker device has a high frequency range. The sound apparatus is characterized in that the low frequency side is reproduced by the second speaker device.

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