WO2012123987A1 - 車載用音響装置 - Google Patents
車載用音響装置 Download PDFInfo
- Publication number
- WO2012123987A1 WO2012123987A1 PCT/JP2011/001497 JP2011001497W WO2012123987A1 WO 2012123987 A1 WO2012123987 A1 WO 2012123987A1 JP 2011001497 W JP2011001497 W JP 2011001497W WO 2012123987 A1 WO2012123987 A1 WO 2012123987A1
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- WO
- WIPO (PCT)
- Prior art keywords
- sound
- type speaker
- vibration type
- vibration
- operation panel
- Prior art date
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/02—Spatial or constructional arrangements of loudspeakers
Definitions
- the present invention is an acoustic device that is mounted in an automobile, and has a built-in vibration type speaker in the housing and has sound holes on the outer front surface and the upper or lower surface of the housing.
- a conventional acoustic device has a sound hole only on the upper surface (see Patent Document 1). Since this acoustic device has a built-in vibration type speaker having a cone type diaphragm that can output from the high range to the low range, the vibration type speaker is arranged so as to face the upper surface, so that a larger vibration type speaker can be built in. It is configured.
- the sound hole is provided only on the upper surface facing the vibration type speaker, the sound wave emitted from the rear surface of the diaphragm remains in the casing. For this reason, the air resistance is increased, and it is difficult to emit a sound wave in the low frequency range.
- the diaphragm generates sound waves by vibrating the air by the vibration of the sound wave generator. Therefore, when outputting the same sound wave wavelength, the sound wave wavelength is opposite to the normal phase on the front and back sides of the diaphragm. That is, when the normal phase and reverse phase wavelengths coexist in the housing, the wavelengths interfere with each other and cancel each other, resulting in a weakening of the sound wave output from the acoustic device.
- An object of the present invention is to reduce the resistance of air remaining in the casing and to prevent a decrease in sound wave output due to cancellation of normal and reverse phase sound waves emitted from the diaphragm.
- the acoustic device of the present invention emits sound waves from the first sound hole provided in the housing in response to vibration of the vibration type speaker, and secondly provides sound waves emitted from the back surface of the vibration type speaker on the operation panel. It is emitted from the sound hole.
- the vibration type by providing sound holes on the upper surface or the lower surface and the side surface of the acoustic device, the vibration type so that the sound waves of the normal phase and the reverse phase emitted from the diaphragm of the vibration type speaker are not canceled in the casing. It is possible to output from the speaker and prevent a decrease in the output of the sound wave including the bass region.
- FIG. 1 The perspective view of the audio equipment in Embodiment 1 of the present invention.
- Front view of an acoustic device according to Embodiment 2 of the present invention Rear view Top view Bottom view Same side view Same left side view CC sectional view of FIG.
- Embodiment 1 an in-vehicle acoustic device according to Embodiment 1 of the present invention will be described with reference to FIGS. 1 to 12.
- FIG. 1 to 7 show a perspective view, a front view, a rear view, a top view, a bottom view, a right side view, and a left side view of the acoustic device according to Embodiment 1 of the present invention, respectively.
- FIG. 8 shows a cross-sectional view taken along line AA shown in FIG.
- the vibration type speaker 20 of the acoustic device 1 includes a sound wave generation unit 23 including a magnet unit 21 and a voice coil unit 22, and a cone type vibration plate that is connected to the sound wave generation unit 23 and transmits sound waves to the outside. 24 is integrally formed. An edge portion 25 is provided on the outer peripheral portion of the cone-shaped diaphragm 24.
- the substrate 30 has a hole 31 for holding the sound wave generator 23 of the vibration type speaker 20 and is electrically connected to the vibration type speaker 20.
- the acoustic device 1 has a housing 40 that covers the vibration speaker 20 side held by the substrate 30 and the diaphragm 24 of the vibration speaker 20.
- the housing 40 has an opening (not shown) on one side surface, and has a first sound hole 41 on the upper surface.
- the first sound hole 41 of the housing 40 has substantially the same size as the diameter of the vibration type speaker 20 on the upper surface, and allows sound waves generated from the vibration type speaker 20 to pass through.
- the first sound hole 41 has a mesh structure or a slit structure, and facilitates the passage of sound waves.
- a protrusion 42 is provided on the outer periphery of the first sound hole 41 inside the housing 40 from the inner upper surface toward the lower surface.
- the housing 40 is made of resin in order to prevent resonance with sound waves.
- the acoustic device 1 has an operation panel 50 attached to the opening of the housing 40.
- the operation panel 50 has second sound holes 51 through which sound waves of the vibration type speaker 20 pass.
- the acoustic device 1 also includes a volume knob 52 for adjusting the volume, an operation button 53, and a display panel 54 for displaying a radio channel name and the like. Therefore, the audio apparatus 1 can change the radio broadcast channel for output or change the volume.
- the sound source of the audio device 1 is not limited to the one based on the radio broadcast, but may be one based on a flash memory 60, a CD, or a DVD described later.
- FIG. 9 shows a cross-sectional view taken along the line BB shown in FIG. A method of outputting sound waves from the vibration type speaker 20 will be described with reference to the sectional view of FIG.
- the vibration type speaker 20 faces the upper surface of the housing 40, and the edge portion 25 of the cone-shaped diaphragm 24 and the protrusion 42 disposed on the inner upper surface of the housing 40 are in contact with each other. For this reason, sound waves emitted from the front of the vibration type speaker 20 are output through the first sound hole 41 on the upper surface of the housing 40. On the other hand, sound waves emitted from the back surface of the cone-shaped diaphragm 24 are output through the second sound hole 51 of the operation panel 50 arranged on the front surface of the acoustic device 1.
- FIG. 10 is a diagram showing an overview when the audio device 1 is incorporated in the center console inside the vehicle. Only the operation panel 50 of the sound device 1 protrudes from the front surface. The driver can change the radio channel and adjust the volume by operating the volume knob 52 and the operation button 53 on the operation panel 50.
- the acoustic device 1 Since the acoustic device 1 is incorporated in the center console in the vehicle, the sound wave output from the upper surface of the acoustic device 1 hits an in-vehicle device such as an air conditioner disposed on the center console and is absorbed or dispersed. On the other hand, since the sound wave emitted from the back side of the cone-shaped diaphragm 24 is output through the second sound hole 51 of the operation panel 50, the output sound wave directly reaches the person on board.
- an in-vehicle device such as an air conditioner disposed on the center console
- the air resistance in the housing 40 can be reduced, and the cone type vibration of the vibration type speaker 20 can be reduced. It is possible to prevent interference between normal and reverse sound waves emitted from the front and back of the plate 24. For this reason, it is possible to output sound waves that are easy to hear for a person on board without lowering the output of the sound source.
- FIG. 11 is a perspective view when the operation panel 50 of the audio device 1 is removed. As shown in FIG. 11, the operation panel 50 can be removed from the housing 40.
- FIG. 12 is a perspective view of the operation panel 50 when viewed from behind.
- an insertion port 70 may be provided so that an auxiliary storage device such as a flash memory 60 can be connected to the back of the operation panel 50.
- the operation panel 50 can be connected to the audio device 1 with the flash memory 60 inserted and connected to the insertion port 70.
- the flash memory 60 can be connected without deteriorating the appearance of the operation panel 50. Then, music or the like stored in the flash memory 60 can be reproduced by the acoustic device 1.
- FIGS. 13 to 18 show a front view, a rear view, a top view, a bottom view, a right side view, and a left side view of the acoustic device according to Embodiment 2 of the present invention, respectively. Further, FIG. 19 shows a cross-sectional view of the CC line shown in FIG. 13 taken perpendicularly.
- the acoustic device 110 has a housing 140 that covers the vibration speaker 120 side and the diaphragm 124 of the vibration speaker 120 held by the substrate 130.
- the housing 140 has an opening (not shown) on one side surface and a first sound hole 141 on the bottom surface.
- a sound wave is emitted from the first sound hole 141 (the bottom surface of the acoustic device 110) of the housing 140 according to the vibration of the vibration type speaker 120, and the sound wave emitted from the back surface of the vibration type speaker 120 is 150 is emitted from the second sound hole 151 provided at 150.
- the first sound hole 141 having the same size as the diameter of the vibration type speaker 120 is provided on the bottom surface of the casing 140, the direction of the vibration type speaker 120 according to the first embodiment of the present invention is reversed. It has an arranged structure.
- the sound wave output from the bottom surface of the sound device 110 is built into the center console as shown in FIG. 20, so that the sound wave hits an in-vehicle device such as an air conditioner disposed on the center console. Absorbed or dispersed. Since the sound holes are sufficiently secured as in the first embodiment, the air resistance in the housing 140 can be reduced, and the front and back of the cone-type diaphragm 124 of the vibration type speaker 120 can be reduced. It is possible to prevent normal phase and reverse phase interference. For this reason, it is possible to output sound waves that are easy to hear for a person on board without lowering the output of the sound source.
- the acoustic device 110 in which the vibration type speaker 120 faces the bottom as in the second embodiment is different from the acoustic device 1 in the first embodiment.
- interference between the normal phase and the reverse phase emitted from the front and back of the cone-shaped diaphragm 124 can be prevented. Therefore, the sound wave output from the second sound hole 151 of the operation panel 150 can reduce the influence of interference caused by the sound wave of the opposite phase emitted from the vibration type speaker 120, and the sound wave that is easy to hear for the person on board. Can be provided.
- FIG. 21 is a perspective view of the acoustic device 110 according to the second embodiment of the present invention.
- the operation panel 150 cannot be removed from the acoustic device 110.
- an insertion port 170 to which the flash memory 160 can be connected can be provided on the side surface of the raised portion 180 where the operation panel 150 is raised.
- the insertion port 170 may be arranged so as to face the right side surface or the left side surface of the audio device 110, and when the flash memory 160 is inserted, the flash memory 160 may be connected to the front surface of the audio device 110 so that it does not pop out. it can.
- This configuration prevents the flash memory 160 from interfering with the operation when the driver operates the operation panel 150.
- the acoustic device according to the present invention is useful as an acoustic device that can be incorporated into the center console of a vehicle.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
Description
以下、本発明の実施の形態1である車載用音響装置について、図1から図12を参照しながら説明する。
次に、本発明の実施の形態2である車載用音響装置を図13から図22を用いて説明する。
20、120 振動型スピーカ
23、123 音波発生部
24、124 振動板
30、130 基板
31、131 穴
40、140 筐体
41、141 第1の音孔
42、142 突起部
50、150 操作パネル
51、151 第2の音孔
60、160 フラッシュメモリ
70、170 挿入口
180 ***部
Claims (4)
- 音波発生部とこの音波発生部から発生した音波を外部に伝翻する振動部とからなる振動型スピーカと、
この振動型スピーカの音波発生部を保持し、前記音波発生部と電気的に接続する基板と、
この基板の振動型スピーカ側および少なくとも前記振動型スピーカの振動部を覆うとともに、一方の側面に開口部を有し、かつ、前記音波発生部の少なくとも上方または下方の何れか一方に第1の音孔を有する筐体と、
この筐体の開口部に取り付けられ、第2の音孔を有する操作パネルと、を備え、
この振動型スピーカは、前記筐体に設けられた第1の音孔の内方の上面と当接し、前記振動型スピーカの振動に応じて前記筐体の第1の音孔より音波を放出させるとともに、前記振動型スピーカの裏面から放出される音波を前記操作パネルに設けられた第2の音孔より放出させる、音響装置。 - 前記操作パネルは、前記筐体から着脱可能であり、前記操作パネルの背面に補助記憶装置を接続可能に形成される、請求項1に記載の音響装置。
- 前記筐体は、樹脂からなる、請求項1に記載の音響装置。
- 前記操作パネルは、前記筐体の開口部から外方に向かって***する***部を有し、この***部に補助記憶装置を取り外し可能な補助記憶装置挿入口を備える、請求項1に記載の音響装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/001497 WO2012123987A1 (ja) | 2011-03-15 | 2011-03-15 | 車載用音響装置 |
BRPI1105775A BRPI1105775A2 (pt) | 2011-03-15 | 2011-03-15 | aparelho de áudio em veículo |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/001497 WO2012123987A1 (ja) | 2011-03-15 | 2011-03-15 | 車載用音響装置 |
Publications (1)
Publication Number | Publication Date |
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WO2012123987A1 true WO2012123987A1 (ja) | 2012-09-20 |
Family
ID=46830127
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/001497 WO2012123987A1 (ja) | 2011-03-15 | 2011-03-15 | 車載用音響装置 |
Country Status (2)
Country | Link |
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BR (1) | BRPI1105775A2 (ja) |
WO (1) | WO2012123987A1 (ja) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1084192A (ja) * | 1996-09-05 | 1998-03-31 | Nec Shizuoka Ltd | 携帯型電子機器 |
JP2002029322A (ja) * | 2000-07-19 | 2002-01-29 | Kenwood Corp | 車載用電子機器 |
JP2002320291A (ja) * | 2001-04-23 | 2002-10-31 | Nec Corp | スピーカ装置 |
JP2004015149A (ja) * | 2002-06-04 | 2004-01-15 | Kenwood Corp | スピーカの取付けられる筐体の構造 |
JP2007201830A (ja) * | 2006-01-26 | 2007-08-09 | Kenwood Corp | 車載用電子機器 |
JP2010195288A (ja) * | 2009-02-26 | 2010-09-09 | Alpine Electronics Inc | 電子機器 |
-
2011
- 2011-03-15 WO PCT/JP2011/001497 patent/WO2012123987A1/ja active Application Filing
- 2011-03-15 BR BRPI1105775A patent/BRPI1105775A2/pt not_active Application Discontinuation
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH1084192A (ja) * | 1996-09-05 | 1998-03-31 | Nec Shizuoka Ltd | 携帯型電子機器 |
JP2002029322A (ja) * | 2000-07-19 | 2002-01-29 | Kenwood Corp | 車載用電子機器 |
JP2002320291A (ja) * | 2001-04-23 | 2002-10-31 | Nec Corp | スピーカ装置 |
JP2004015149A (ja) * | 2002-06-04 | 2004-01-15 | Kenwood Corp | スピーカの取付けられる筐体の構造 |
JP2007201830A (ja) * | 2006-01-26 | 2007-08-09 | Kenwood Corp | 車載用電子機器 |
JP2010195288A (ja) * | 2009-02-26 | 2010-09-09 | Alpine Electronics Inc | 電子機器 |
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BRPI1105775A2 (pt) | 2016-05-03 |
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