JP2008187609A - Speaker device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a speaker device which has a vertical tube, and can emit a high-quality reproduction sound from the upper end of the vertical tube obliquely upward. <P>SOLUTION: A speaker device has a vertical tube 2, and a supporting portion 5 mounted to the upper end of the vertical tube 2 through a buffering member 6 and supporting a speaker 4. The speaker 5 is connected by a connecting portion 53 so that a fitting frame 51 which fits to the upper end of the vertical tube 2 is nonparallel to an attaching frame 52 to which the speaker 4 is attached, and the speaker 4 inclines to an elevation angle direction with respect to a setting surface by the supporting portion 5. A weight attaching portion 55 is arranged at the bottom of the supporting portion 5 by a plurality of holding portions 55a. A stick weight 3 is attached to the weight attaching portion 55 so as to be extend in the direction of an axis within the vertical tube 2. A sound absorption member 7 is provided so as to cover the inner wall of the vertical tube 2 and the surface of the weight 3. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a speaker device in which a speaker is attached to an upper end of a vertical cylinder.

  In a conventional speaker device, a structure in which a speaker is directly fixed to a front surface of a housing with a screw or the like is mainly used. In the case of this conventional structure, sound waves are emitted from the front surface of the speaker to the outside, and sound waves emitted from the back surface of the speaker toward the housing are reflected by the inner wall of the housing, The sound waves emitted from the front surface of the speaker resonate and unnecessary vibrations are generated in the speaker, which deteriorates the sound quality of the reproduced sound.

  In addition, when the speaker is directly fixed to the box-shaped housing, the vibration of the speaker is transmitted to the housing to induce plate vibration, and further, vibration due to the plate vibration is transmitted to the speaker, which is unnecessary for the entire speaker. The sound quality of the reproduced sound was further deteriorated by generating vibration.

In order to solve such a problem, a speaker is arranged via a buffer member at the upper end of a vertical cylinder that is vertically placed on the installation surface, and extends vertically in the vertical cylinder on the back (lower surface) of the speaker. Patent Document 1 proposes a speaker device that has a rod-shaped weight that suppresses vibrations and obtains high-quality reproduced sound.
JP 2001-224089 A

  However, this speaker device emits sound omnidirectionally in all directions, and is installed away from the wall to prevent the sound quality from deteriorating due to interference between sound reflected from the wall and sound waves emitted from the front of the speaker. There is a need to. As a result, when used in combination with a thin display capable of shortening the distance from the wall to the screen when installed near the wall, the advantage of the thin display can not be set close to the wall. There is a problem that it cannot be used. Further, since the sound is mainly emitted upward on the central axis of the vertical cylinder, there is a problem that it is difficult for a viewer located in front of the speaker device to hear a high directivity sound with high directivity.

  This invention is made | formed in view of such a situation, and is equipped with the support part which supports a speaker so that it may incline toward a viewer, and, in other words, it goes to the direction which goes to a wall. Suppresses the propagation of sound waves to reduce the reflected sound from the wall, installs and uses it in close proximity to the wall, and emits sound toward the viewer so that the viewer can easily hear high-frequency sounds. An object of the present invention is to provide a speaker device that can perform the above.

  Another object of the present invention is to insert a buffer member between the support portion and the vertical cylindrical body so that the vibration of the speaker is not transmitted to the vertical cylindrical body, thereby suppressing unnecessary vibration and high quality reproduction. An object of the present invention is to provide a speaker device that can obtain sound.

  Another object of the present invention is to provide a sound absorbing member so as to cover the inner wall of the vertical cylinder, thereby absorbing and attenuating unnecessary sound waves propagating from the back of the speaker to the vertical cylinder to obtain a high-quality reproduced sound. An object of the present invention is to provide a speaker device capable of performing

  Another object of the present invention is to provide a support portion provided so that a mounting frame on which a speaker is attached is inclined with respect to the viewer, thereby enabling high-quality reproduced sound to be emitted toward the viewer. It is providing the speaker apparatus which becomes.

  Another object of the present invention is to provide a bar-shaped weight portion extending through the vertical cylinder in the support portion, thereby suppressing the vibration of the speaker from being attenuated and preventing unnecessary vibration from being generated in the speaker. An object of the present invention is to provide a speaker device capable of obtaining sound.

  Another object of the present invention is to provide a sound absorbing member that covers the surface of the weight part, so that sound waves emitted from the back surface of the speaker are absorbed and prevented from interfering with sound waves emitted from the front surface of the speaker. An object of the present invention is to provide a speaker device capable of obtaining a quality reproduction sound.

  Another object of the present invention is a curved cylindrical shape in which the support part is loosely arranged at the upper end of the vertical cylinder with a gap between the inner wall of the vertical cylinder and surrounds the connecting part of the support part with a gap. By providing a decorative part, it is possible to obtain a design-appropriate appearance and to prevent unnecessary sound waves generated from the back surface of the speaker from propagating to the vertical cylinder and interfere with sound waves emitted from the front surface of the speaker, thereby achieving high quality. An object of the present invention is to provide a speaker device capable of obtaining reproduced sound.

  The speaker device according to the present invention is a speaker device including a vertical cylinder and a speaker arranged to cover the upper end of the vertical cylinder, and is placed on the upper end of the vertical cylinder, and the speaker It has the support part which supports so that it may incline in an elevation angle direction with respect to an installation surface, It is characterized by the above-mentioned.

  In the present invention, the speaker device includes a vertical cylindrical body and a support portion that supports the speaker so as to be inclined in the elevation angle direction with respect to the installation surface. The support portion to which the speaker is attached is placed on the upper end of the vertical cylinder, and the sound wave emitted from the front surface of the speaker emits sound obliquely upward with respect to the installation surface. As a result, most of the reproduced sound propagates in front of the speaker device, in other words, toward the viewer.

  The speaker device according to the present invention is characterized in that a buffer member is inserted between the support portion and the vertical cylindrical body.

  In the present invention, the buffer member inserted between the support portion and the vertical cylindrical body absorbs vibration generated from the back surface of the speaker and transmitted to the support portion, and vibration is generated from the support portion to the vertical cylindrical body. Support the support so as not to transmit.

  The speaker device according to the present invention includes a sound absorbing member that covers an inner wall of the vertical cylinder.

  In the present invention, the sound absorbing member that covers the inner wall of the vertical cylinder absorbs and attenuates unnecessary sound waves that are emitted from the back surface of the speaker and propagate through the vertical cylinder.

  In the speaker device according to the present invention, the support portion includes an attachment frame to which the speaker is attached, a fitting frame that is fitted to an upper end of the vertical cylinder, and the attachment frame is not parallel to the fitting frame. And a connecting portion for connecting.

  In the present invention, the support portion is connected by the connecting portion so that the mounting frame on which the speaker is mounted is not parallel to the installation surface, and the speaker is inclined obliquely upward with respect to the installation surface. Are arranged as follows.

  In the speaker device according to the present invention, the support portion includes a weight attaching portion disposed inside the fitting frame, a holding portion connected to the fitting frame from the weight attaching portion, and one end of the weight attaching portion. And a rod-shaped weight extending into the vertical cylinder.

  In the present invention, the weight attaching portion and the inner peripheral surface of the fitting frame are connected by the holding portion so that the weight attaching portion is disposed inside the fitting frame of the support portion. One end of a rod-shaped weight extending in the vertical cylinder is fixed to the weight mounting portion, and the vibration transmitted from the speaker to the support portion is attenuated and suppressed.

  The speaker device according to the present invention includes a sound absorbing member that covers a surface of the weight.

  In the present invention, the sound absorbing member covering the surface of the weight absorbs and attenuates the sound wave propagating from the back surface of the speaker into the vertical cylinder.

  The speaker device according to the present invention is provided in the fitting frame, and has a peripheral edge loosely fitted to an upper end of the vertical cylinder, and is provided in the vicinity of the upper end of the vertical cylinder, and supports the outer flange. And a curved tubular decorative part surrounding the connecting part with a gap.

  In the present invention, the peripheral edge of the outer flange portion provided in the fitting frame is loosely fitted to the upper end of the vertical cylinder. The support portion is placed inside the vicinity of the upper end of the vertical cylinder so that the inner flange provided near the upper end of the vertical cylinder supports the outer flange of the fitting frame. The curved tube-shaped decorative portion covers the connecting portion from the upper end to the vicinity of the mounting frame by covering the connecting portion with a gap.

  In the present invention, by providing a support portion that supports the speaker so as to be inclined toward the viewer, the propagation of sound waves to the rear is suppressed to reduce the reflected sound from the wall and close to the wall. It can be installed and used in a state, and the sound is emitted toward the viewer so that the viewer can easily hear the sound in the high frequency range.

  In the present invention, by inserting a buffer member between the support portion and the vertical cylindrical body, the vibration of the speaker is transmitted to the vertical cylindrical body, and plate vibration is generated in the vertical cylindrical body. Therefore, it is possible to prevent unnecessary vibrations from being generated in the speaker and to obtain a high-quality reproduced sound.

  In the present invention, by providing a sound absorbing member so as to cover the inner wall of the vertical cylinder, unnecessary sound waves propagating from the back of the speaker into the vertical cylinder are absorbed and attenuated, and reflected by the inner wall of the vertical cylinder. Therefore, it is possible to prevent resonance between the sound wave and the reproduced sound of the speaker, and to obtain a high-quality reproduced sound.

  In the present invention, by providing the support portion connected by the connecting portion so that the mounting frame on which the speaker is mounted and the fitting frame fitted to the upper end of the vertical cylindrical body are non-parallel, Sound waves emitted from the front face obliquely upward, and most of the reproduced sound propagates toward the viewer, so that the viewer can easily hear the reproduced sound in the high frequency range.

  In the present invention, by providing the support portion with a rod-shaped weight portion extending through the vertical cylinder, the moment of inertia of the support portion is increased, and unnecessary vibration of the speaker is suppressed together with the support portion, so that high-quality reproduction is achieved. Sound can be obtained.

  In the present invention, by providing the sound absorbing member that covers the surface of the weight portion, unnecessary sound waves propagating from the back surface of the speaker into the vertical cylinder are absorbed, and unnecessary sound waves and sound waves emitted from the front surface of the speaker are absorbed. Can be prevented and high-quality reproduced sound can be obtained.

  In the present invention, the support portion is loosely arranged at the upper end of the vertical cylinder body with a gap from the inner wall of the vertical cylinder body, and the curved cylindrical makeup that surrounds the connection portion of the support section with a gap space. By providing the part, it is possible to obtain a design-friendly appearance. Further, the present invention prevents the interference of the sound wave generated on the back surface of the speaker with the sound wave emitted from the front surface of the speaker by propagating the sound wave in the vertical cylinder, and can obtain high-quality reproduced sound. Excellent effect.

  Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof. FIG. 1 is a perspective view of a speaker device according to the present invention, and FIG. 2 is a schematic longitudinal sectional view showing the structure of the speaker device. The speaker device according to the present invention includes a cylindrical vertical cylindrical body 2 placed vertically on an installation surface, and an inner flange portion 21 that protrudes in the radial direction over the entire circumference is provided on the inner peripheral surface on the upper end side. Yes. A curved cylindrical support portion 5 is placed on the inner flange portion 21 of the vertical cylindrical body 2 so as to fit the lower end, and the speaker 4 is attached to the upper end of the support portion 5.

  FIG. 3 is a perspective view showing the support portion 5. The support portion 5 includes an annular fitting frame 51 that fits the central opening of the inner flange portion 21 of the vertical cylindrical body 2 at the lower end, and an annular attachment frame 52 to which the speaker 4 is attached at the upper end. And the attachment frame 52 are connected by a connecting portion 53 having a curved cylindrical shape so as to be non-parallel. The fitting frame 51 has an outer diameter slightly shorter than the inner diameter dimension of the inner flange portion 21 so as to be loosely fitted with a gap in the opening of the inner flange portion 21 of the vertical cylindrical body 2. The fitting frame 51 is provided with an outer flange portion 54 that protrudes in the opposite radial direction on the outer peripheral surface over the entire circumference, and is vertically fitted so as to be loosely fitted with a gap between the inner wall of the vertical cylindrical body 2. The outer diameter is slightly shorter than the inner diameter of the cylindrical body 2.

  In the support portion 5, the outer flange portion 54 and the fitting frame 51 are loosely fitted to the upper end of the vertical cylindrical body 2 and the opening of the inner flange portion 21, respectively, and the outer flange portion 54 abuts on the inner flange portion 21 and is supported. As a result, it is placed near the upper end of the vertical cylinder 2. 4 is a schematic cross-sectional view taken along line II-II in FIG. As shown in FIG. 4, a disc-shaped weight mounting portion 55 having a predetermined thickness at the center of the fitting frame 51 of the support portion 5 has four holding portions 55 a, 55 a, 55 a from the outer peripheral edge of the weight mounting portion 55. , 55a extend radially at equal intervals and are arranged by being connected to the inner peripheral surface of the fitting frame 51.

  The rod-shaped weight portion 3 made of a material having a large specific gravity such as metal has a vertical cylindrical body in which a screw portion projecting from one end of the weight portion 3 is screwed into a screw hole formed at the center of the weight mounting portion 55. 2 is attached so as to extend in the vertical direction. The speaker 4 includes a diaphragm that is shaped like a truncated cone and a mechanism that vibrates the diaphragm in response to an electric signal. The speaker 4 is fitted to the mounting frame 52 of the support portion 5 and is attached to the support portion 5 by screws or the like. It is attached. A sound absorbing member 7 made of, for example, glass wool or thin felt is provided on the inner wall of the vertical cylinder 2 and the surface of the weight portion 3 so as to cover them. Between the outer flange portion 54 of the support portion 5 and the inner flange portion 21 of the vertical cylindrical body 2, an annular buffer member 6 made of an elastic body having a pressure dispersion capability such as polyurethane or gel material is inserted. .

  FIG. 5 is a structural sectional view showing the speaker 4. Reference numerals 41 and 42 shown in FIG. 5 denote a vibrating part and a magnetic circuit, respectively. The vibration part 41 includes a cylindrical voice coil bobbin 412 that transmits a driving force generated in the voice coil 413 to the vibration system, and a diaphragm 411 attached to the voice coil bobbin 412. Have. The magnetic circuit 42 includes a top plate 421 having an opening in the center, an annular magnet 423 that is bonded to the lower surface of the top plate 421 and magnetized in the thickness direction, and a yoke 424 that is bonded to the lower surface of the magnet 423. However, it is configured as an outer magnet type.

  The yoke 424 rises from the center of the top surface of the bottom plate 424a and the bottom plate 424a and generates magnetic force for driving the diaphragm 411 in cooperation with the voice coil 413 between the inner peripheral surface of the opening of the top plate 421. And a center pole 424b that forms the generated magnetic gap 422. Further, the speaker 4 includes a frame 43 joined to the upper surface of the top plate 421, and a damper 44 whose inner periphery is joined to the upper end of the voice coil bobbin 412 and whose outer periphery is joined to the frame 43. In addition, the inner peripheral part of the diaphragm 411 is joined to the upper end part of the voice coil bobbin 412 similarly to the damper 44, and the outer peripheral part is supported by the frame 43 via a roll-shaped edge 411a.

  The speaker 4 is provided with a mesh disk-like speaker cover 45 for covering the diaphragm 411 to protect the dustproof and diaphragm 411. The decorative portion 1 is provided in order to make the appearance of the speaker device preferable in terms of design, and has a curved cylindrical shape so as to cover the connecting portion 53 of the support portion 5 with a gap. The lower end portion of the decorative portion 1 has an inner diameter and an outer diameter that are substantially the same as the inner diameter and outer diameter of the upper end of the vertical cylindrical body 2, and the lower end of the decorative portion 1 and the upper end of the vertical cylindrical body 2 are Ring-shaped step portions are provided so as to be fitted, and these step portions are fitted to each other so that the decorative portion 1 is attached to the upper end of the vertical cylindrical body 2.

  Thereby, the decorative part 1 surrounds the periphery of the attachment frame 52 and the connecting part 53 with a gap. With the above configuration, the voice coil 413 held in the magnetic gap 422 of the speaker 4 vibrates according to the electric signal, and the voice coil bobbin 412 supporting the voice coil 413 vibrates the driving force generated in the voice coil 413. By transmitting to the system, the diaphragm 411 vibrates, and a sound corresponding to the electric signal is generated. The sound wave emitted from the front surface of the diaphragm 411 propagates obliquely upward with respect to the installation surface through the speaker cover 45 and the opening at the upper end of the decorative portion 1.

  The sound wave emitted from the back surface of the diaphragm 411 propagates inside the support portion 5 toward the fitting frame 51, passes through the gap between the holding portions 55 a, 55 a,. To do. The sound wave propagated in the vertical cylinder 2 is absorbed and attenuated by the sound absorbing member 7 provided so as to cover the inner wall of the vertical cylinder 2 and the surface of the weight portion 3. Further, unnecessary vibration generated in the speaker 4 is transmitted to the support portion 5 through the frame 43, but is attenuated by the buffer member 6. As a result, unnecessary sound waves generated from the back surface of the speaker 4 reach the inner wall of the vertical cylinder 2 to prevent unnecessary plate vibration from being generated in the vertical cylinder 2 and the sound waves reflected from the inner wall of the vertical cylinder 2 are prevented. This prevents the speaker 4 from reaching the speaker 4 and causing unnecessary vibrations.

  The weight portion 3 attenuates and suppresses unnecessary vibration transmitted from the speaker 4 to the support portion 5 by increasing the moment of inertia of the support portion 5. Thereby, it is possible to suppress unnecessary vibrations from being transmitted to the vertical cylindrical body 2 and to prevent plate vibrations generated when the vibrations are transmitted to the vertical cylindrical body 2 from causing large vibrations in the speaker 4. By suppressing these unnecessary sound waves and vibrations, it is possible to obtain high-quality reproduced sound. Further, since the speaker 4 is attached by the support portion 5 so that sound is emitted obliquely upward with respect to the installation surface, the speaker device is placed so that the viewer is positioned in the direction of the white arrow in FIG. Can be installed close to the wall positioned in the opposite direction of the white arrow.

  FIG. 6 is a perspective view showing another example of the shape of the support portion 5. The support portion 8 has four rod-like connecting portions 83, 83 bent so that the fitting frame 81 is inclined in the elevation direction with respect to the mounting frame 82, instead of the curved cylindrical connecting portion 53 shown in FIG. 83 and 83 are connected. In this case, the decorative portion 1 not only makes the appearance of the speaker device preferable in terms of design, but also has an effect of propagating unnecessary sound waves emitted from the back surface of the speaker 4 to the inside of the vertical cylindrical body 2. . The connecting portions 83, 83,... Are not limited to four, and may be three or less or five or more.

  A disc-shaped weight attaching portion 85 having a predetermined thickness at the center of the fitting frame 81 has four holding portions 85a, 85a, 85a, 85a extending radially from the outer periphery of the weight attaching portion 85, It arrange | positions by connecting with the internal peripheral surface of the fitting frame 81. FIG. The weight portion 3 is attached to a screw hole formed at the center of the weight attachment portion 85 so as to extend in the vertical direction in the vertical cylindrical body 2.

  The fitting frame 81 is provided with an outer flange portion 84 that protrudes in the opposite radial direction over the entire circumference on the outer peripheral surface. The fitting frame 81 has a vertical gap so as to be loosely fitted with an inner wall of the vertical cylindrical body 2. The outer diameter is slightly shorter than the inner diameter of the cylindrical body 2. In the support portion 8, the outer flange portion 84 and the fitting frame 81 are loosely fitted to the upper end of the vertical cylindrical body 2 and the opening of the inner flange portion 21, respectively, and the outer flange portion 84 abuts on the inner flange portion 21 and is supported. As a result, it is placed near the upper end of the vertical cylinder 2.

  It is preferable that the lower end of the vertical cylindrical body 2 has a structure closed with a bottom surface covered with a sound absorbing material. Moreover, the lower end of the vertical cylinder 2 may be an opening, and a support base that supports the opening surface and the installation surface at a predetermined distance may be provided. In this case, the sound wave remaining without being absorbed by the sound absorbing member 7 in the vertical cylinder 2 propagates outward from the opening at the lower end of the vertical cylinder 2, and thus occurs when the vertical cylinder 2 has a bottom. It is possible to prevent the sound wave reflected at the bottom of the vertical cylindrical body 2 from propagating to the speaker 4 and interfering with the sound wave emitted from the front surface of the speaker.

  As shown in FIG. 2, the angle formed by the axial direction of the speaker 4 and the axial direction of the vertical cylinder 2 is defined as θ. As θ increases, the reproduced sound generated from the speaker 4 propagates in the direction of the white arrow in the drawing, that is, in the direction toward the viewer, so that the viewer can hear it more easily. However, since the center of gravity of the support portion 5 moves from the center of the opening of the fitting frame 51 in the direction of the white arrow in FIG. 2, when θ is large, the weight balance is greatly lost and unnecessary vibration is generated in the support portion 5. May occur, which may be undesirable for obtaining high-quality reproduced sound.

  Therefore, as the angle θ increases, the weight attaching portion 55 is provided at a position displaced from the center of the central opening of the fitting frame 51 by a predetermined amount in the direction opposite to the white arrow in FIG. May be adjusted so that the position of the center of gravity is positioned substantially at the center of the opening of the fitting frame 51.

It is a perspective view which shows the speaker apparatus which concerns on this invention. It is a typical longitudinal cross-sectional view which shows the structure of a speaker apparatus. It is a perspective view which shows a support part. It is typical sectional drawing in the II-II line of FIG. It is structural sectional drawing which shows a speaker. It is a perspective view which shows the other example of a shape of a support part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cosmetic part 2 Vertical cylinder 3 Weight part 4 Speaker 5 Support part 6 Buffer member 7 Sound absorbing member 21 Inner flange part 51 Fitting frame 52 Mounting frame 53 Connection part 54 Outer flange part 55 Weight attaching part 55a Holding part

Claims (7)

In a speaker device comprising a vertical cylinder and a speaker arranged to cover the upper end of the vertical cylinder,
It is placed on the upper end of the vertical cylinder,
A speaker device comprising: a support portion configured to support the speaker so as to be inclined in an elevation angle direction with respect to an installation surface. The speaker device according to claim 1, wherein a buffer member is inserted between the support portion and the vertical cylindrical body.   The speaker device according to claim 1, further comprising a sound absorbing member that covers an inner wall of the vertical cylindrical body. The support part is
A mounting frame to which the speaker is mounted;
A fitting frame fitted to the upper end of the vertical cylinder;
The speaker device according to claim 1, further comprising: a connecting portion that connects the attachment frame so as to be non-parallel to the fitting frame. The support part is
A weight mounting portion disposed inside the fitting frame;
A holding portion connected to the fitting frame from the weight mounting portion;
The speaker device according to claim 4, further comprising: a rod-shaped weight that has one end fixed to the weight mounting portion and extends into the vertical cylinder.   The speaker device according to claim 5, further comprising a sound absorbing member that covers a surface of the weight. An outer flange portion provided on the fitting frame and having a peripheral edge loosely fitted to an upper end of the vertical cylinder;
An inner flange portion provided near the upper end of the vertical cylinder, and supporting the outer flange portion;
The speaker device according to any one of claims 1 to 6, further comprising a curved cylindrical decorative portion that surrounds the connecting portion with a gap.

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