WO2016039245A1 - Wearable speaker device - Google Patents

Abstract

Provided is a wearable speaker device which reduces vibration due to middle and high pitched sounds to thereby enable high realistic sensation to be obtained by vibration due to a low pitched sound. A wearable speaker device (1) is provided with a right speaker (11) and a left speaker (12) which each comprise a diaphragm, a drive part that drives the diaphragm, and an enclosure that covers the drive part in a state where the diaphragm is exposed, and the enclosure is configured to be wearable by a listener and has a vibration prevention part (21d, 22d) for preventing transmission of middle and high pitched sounds in a portion that is in contact with the listener.

Description

Wearable speaker device

The present invention relates to a wearable speaker device, and more particularly, to a wearable speaker device that is used by a listener attached to a portion other than the ear.

Some sound output devices such as speaker devices are used by being incorporated in display devices such as liquid crystal televisions. However, the built-in speaker devices often have a small diameter, so that a sense of reality is often insufficient because a large volume cannot be obtained. In order to obtain a sense of reality, it is common practice to use an external large-diameter speaker system or headphones.

The large-diameter speaker system has the advantage that a plurality of viewers can view simultaneously, and the headphone can only be viewed by one viewer per device, but has the effect of blocking surrounding sounds. , There is a merit that immersive feeling can be obtained.
However, on the other hand, viewing with a large-diameter speaker system may cause discomfort to unviewed people and the neighborhood due to the loud volume when obtaining a powerful sound. And restrictions often occur. In addition, viewing with headphones has problems such as the inability to hear surrounding sounds and the problem of feeling tired when used for a long time because the sound image is localized in the head.

As a solution to the above-mentioned disadvantages of the large-diameter speaker system and headphones, a speaker that is used by being attached to a part other than the ear, that is, a wearable speaker device, can be considered.

Patent Document 1 discloses a neck-worn type wearable speaker device that can be necked in a non-contact state with a listener's ear. The wearable speaker device includes a frame having a curved portion in contact with the back of the listener's neck, and speakers provided at both ends of the frame so as to face the curved portion. When worn, the speaker is positioned under the listener's chin and facing the ear.

Patent Documents 2 and 3 disclose wearable speaker devices that have neck hanging portions that are hung from the back of the listener's neck toward the front, and speakers are provided at both ends of the neck hanging portion. In this wearable speaker device, the right ear speaker is located on the right shoulder and the left ear speaker is located on the left shoulder when the neck portion is hung on the listener's neck. The speaker for the left ear is directed to the right ear and the speaker for the left ear is directed to the left ear.

The wearable speaker device disclosed in Patent Document 4 has a bass reflex hole formed in the enclosure of the right ear speaker and the left ear speaker in addition to the same configuration as the wearable speaker devices of Patent Documents 2 and 3. The enclosure extends to form a neck.

JP 2009-201088 A JP 2008-263374 A Japanese Patent No. 2884017 JP-A-6-178384

Like the wearable speaker device disclosed in Patent Document 4, when the speaker enclosure is mounted in contact with the listener's body, the vibration generated by the bass is transmitted to the listener, which can give a more realistic feeling. Also, vibration due to middle and high sounds may occur, which may cause unnatural and uncomfortable feelings to the listener. In this regard, none of Patent Documents 1 to 4 discloses or suggests.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a wearable speaker device that suppresses vibration caused by middle and high sounds and obtains a high sense of reality by vibration caused by low sounds.

In order to solve the above problems, a first technical means of the present invention includes a diaphragm, a drive unit that drives the diaphragm, and an enclosure that covers the drive unit with the diaphragm exposed. A speaker is provided, and the enclosure is configured to be attachable to a listener, and further includes a vibration preventing unit that prevents transmission of medium to high sounds.

The second technical means of the present invention is characterized in that, in the first technical means, the vibration preventing portion has a ducted hole or a passive radiator provided inside the enclosure.

According to a third technical means of the present invention, in the first or second technical means, the enclosure is provided with a bass amplifying unit for amplifying a bass.

According to a fourth technical means of the present invention, in any one of the first to third technical means, the enclosure is provided with a bellows portion formed in a bellows shape.

According to a fifth technical means of the present invention, in any one of the first to fourth technical means, the enclosure is configured to be attachable to a neck and / or a shoulder of the listener. It is.

A sixth technical means of the present invention is the technical means of any one of the first to fifth technical aspects, further comprising a support member that supports the diaphragm and the drive unit, and the support member constitutes the enclosure and the The vibration preventing unit is configured.

The seventh technical means of the present invention is characterized in that, in the first technical means, a portion of the enclosure that contacts the listener is formed of a flexible member.

According to the wearable speaker device of the present invention, it is possible to suppress the vibration caused by the middle and high sounds and obtain a high sense of reality by the vibration caused by the low sounds.

It is a figure for demonstrating the wearable speaker apparatus which concerns on the 1st Embodiment of this invention. It is sectional drawing of the front part of the wearable speaker apparatus of FIG. It is a schematic top view of the wearable speaker apparatus of FIG.1 and FIG.2. It is a schematic top view for demonstrating the wearable speaker apparatus which concerns on the 2nd Embodiment of this invention. It is a schematic top view for demonstrating the wearable speaker apparatus which concerns on the 3rd Embodiment of this invention. It is a schematic top view for demonstrating the wearable speaker apparatus which concerns on the 4th Embodiment of this invention. It is a figure for demonstrating the wearable speaker apparatus which concerns on the 5th Embodiment of this invention. It is a schematic top view for demonstrating the wearable speaker apparatus which concerns on the 6th Embodiment of this invention. It is a schematic top view for demonstrating the wearable speaker apparatus which concerns on the 7th Embodiment of this invention. It is a schematic top view for demonstrating the wearable speaker apparatus which concerns on the 8th Embodiment of this invention. It is a perspective view of the wearable speaker apparatus of the example which does not have a vibration prevention part. It is a top view of the wearable speaker apparatus of FIG. It is a front view of the wearable speaker apparatus of FIG. It is a figure which shows the sound pressure distribution in the wearable speaker apparatus of FIG. It is a figure which shows the sound pressure distribution in the comparative example of the wearable speaker apparatus of FIG. It is a perspective view for demonstrating another form of the wearable speaker apparatus of the example of FIG.

Hereinafter, preferred embodiments of the wearable speaker device of the present invention will be described with reference to the drawings. In the following description, the same reference numerals are used in different drawings, and the description thereof is omitted.

(First embodiment)
FIG. 1 is a diagram for explaining a wearable speaker device according to a first embodiment of the present invention, and shows a bass reflex port, which will be described later, in a state where a listener wearing the speaker device is viewed from an oblique front. As shown. In this specification, the side where the speaker of the wearable speaker device is provided is the front side of the wearable speaker device, and the side where the speaker is located when the rear and sides of the support member of the wearable speaker device are horizontal. The upper side of the wearable speaker device.

The wearable speaker device 1 shown in the figure includes a right speaker 11 that outputs sound for the right ear, a left speaker 12 that outputs sound for the left ear, and a support member 20 that supports the right speaker 11 and the left speaker 12. .
The wearable speaker device 1 is formed in an annular shape when viewed from above, and is worn on the listener U in such a manner that the rear end of the support member 20 is hung on the neck of the listener U. When the wearable speaker device 1 is mounted, the lower surfaces of both side portions of the support member 20 are in contact with the shoulder and chest of the listener U, and the right speaker 11 and the left speaker 12 are located at the front neck of the listener U's face.

Further, the support member 20 of the wearable speaker device 1 includes a first support portion 21 and a second support portion 22 formed in a symmetrical shape with the first support portion 21. The first support portion 21 has an L-shaped portion 21a having a L-shaped shape in the front view when viewed from the front, and the right speaker 11 is provided on the L-shaped portion 21a. The second support part 22 has an inverted L-shaped part 22a having a shape in which the L-shape is reversed left and right and tilted sideways when viewed from the front, and the left speaker 12 is provided on the inverted L-shaped part 22a.

The first and second support portions 21 and 22 are each formed of a cylindrical hollow member. The end of the first support 21 opposite to the side where the right speaker 11 is provided and the end of the second support 22 opposite to the side where the left speaker 12 is provided are connected by bonding or the like. ing. A partition wall 23 is provided at a connecting portion between the first support portion 21 and the second support portion 22 on the rear side, and the hollow portion of the first support portion 21 and the second support portion are provided by the partition wall 23. 22 hollow parts are divided.

FIG. 2 is a cross-sectional view of the right speaker 11, the left speaker 12, the L-shaped portion 21 a of the first support portion 21, and the inverted L-shaped portion 22 a of the second support portion 22.
As shown in the figure, the right speaker 11 and the left speaker 12 are respectively vibration plates 11a and 12a that vibrate to generate sound, drive units 11b and 12b that drive the vibration plates 11a and 12a, and vibration plates 11a and 12a. And enclosures 11d and 12d that cover the drive units 11b and 12b with the vibration plates 11a and 12a exposed, and frames 11c and 12c that support the drive units 11b and 12b. The diaphragms 11a and 12a and the drive units 11b and 12b are fixed to the enclosures 11d and 12d via the frames 11c and 12c.

The right speaker 11 and the left speaker 12 are supported with the diaphragms 11a and 12a facing in opposite directions. More specifically, the direction in which the diaphragm 11a is positioned with respect to the drive unit 11b of the right speaker 11 and the direction in which the diaphragm 12a is positioned with respect to the drive unit 12b of the left speaker 12 are in opposite directions. The right speaker 11 and the left speaker 12 are supported.
In addition, the direction of the right speaker 11 and the left speaker 12 is not limited to the above-described example, and may be a backward direction. However, a natural sound field can be reproduced as described later by making the diaphragms 11a and 12a of the right speaker 11 and the left speaker 12 face the right and left sides of the listener, respectively.

The L-shaped portion 21a of the first support portion 21 is provided with the right speaker 11 at the upper end of the L-shaped short side portion 21b, the short side portion 21b extends in the vertical direction, and the long side portion 21c is on the right side. The diaphragm 11a of the speaker 11 extends in the vibration direction X1. Further, the remaining portion of the first support portion 21 is present behind the long side portion 21c.
Similarly, the inverted L-shaped portion 22a of the second support portion 22 is provided with the left speaker 12 at the upper end of the inverted L-shaped short side portion 22b, and the short side portion 22b extends in the vertical direction and has the same length. The side portion 22c extends in the vibration direction X2 of the diaphragm 12a of the left speaker 12. Further, the remaining portion of the second support portion 22 exists behind the long side portion 22c.
In this way, the output surfaces of the right speaker 11 and the left speaker 12 are not blocked by the first and second support portions 21 and 22.

The hollow portion of the enclosure 11d of the right speaker 11 and the hollow portion of the first support portion 21 communicate with each other, and the hollow portion of the enclosure 12d of the left speaker 12 and the hollow portion of the second support portion 22 are connected. Communicate.
In other words, in the wearable speaker device 1, the first support portion 21 and the second support portion 22, that is, the support member 20 also function as an enclosure for the right speaker 11 and the left speaker 12. In the wearable speaker device 1, the enclosure of the right speaker 11 and the left speaker 12 has a shape that can be worn by a listener.

In this wearable speaker device 1, when sound is output from the right speaker 11 and the left speaker 12, if vibration due to low sound occurs in the contact portion of the enclosure with the listener, the sense of presence is improved. However, when sound is output from the right speaker 11 and the left speaker 12 and vibration due to middle and high sounds is generated in the contact portion of the enclosure with the listener, the listener may be unnatural and uncomfortable. Therefore, the wearable speaker device 1 is configured as follows.

FIG. 3 is a schematic top view of the wearable speaker device 1 of FIGS. 1 and 2.
The wearable speaker device 1 includes vibration prevention units 21d and 22d that prevent the transmission of middle and high sounds to the rear, and bass reflex ports 21g and 22g as low sound amplification units that amplify the low sounds, in order to prevent generation of vibration due to middle and high sounds. In the first and second support portions 21 and 22.

The vibration preventing portion 21d of the first support portion 21 is provided inside the side of the first support portion 21 and between the right speaker 11 and the bass reflex port 21g. The vibration preventing portion 21d includes a wall 21e that separates the hollow portion on the right speaker 11 side of the first support portion 21 from the hollow portion on the bass reflex port 21g side, and a duct-attached hole 21f that communicates both the hollow portions is a wall. 21e. The duct portion of the ducted hole 21f protrudes forward from the wall 21e.
By the vibration preventing portion 21d, middle and high sounds from the back surface of the diaphragm 11a of the right speaker 11 are transmitted to the bass reflex port 21g side of the first support portion 21, that is, the portion of the first support portion 21 that contacts the listener. Can be transmitted and bass can be transmitted.

Similarly, the vibration preventing portion 22d of the second support portion 22 is provided inside the side of the second support portion 22 and between the left speaker 12 and the bass reflex port 22g. The vibration preventing portion 22d has a wall 22e that separates the hollow portion on the left speaker 12 side of the second support portion 22 from the hollow portion on the bass reflex port 22g side, and a hole 22f with a duct that communicates both the hollow portions is a wall. 22e. The duct portion of the ducted hole 22f protrudes forward from the wall 22e.
By the vibration preventing portion 22d, middle and high sounds are transmitted from the back surface of the diaphragm 12a of the left speaker 12 to the bass reflex port 22g side of the second support portion 22, that is, the portion of the second support portion 22 that contacts the listener. Can be transmitted and bass can be transmitted.

As described above, in the wearable speaker device 1, the vibration preventing portions 21 d and 22 d prevent middle and high sounds from being transmitted to the portion that comes into contact with the listener at the time of wearing. Vibration is unlikely to occur, and only vibration due to low sounds is generated, so that a high sense of presence can be obtained.

Also, the bass reflex port 21g provided in the first support part 21 emits a low-frequency sound among the low-frequency sounds emitted from the vibration preventing part 21d. The bass reflex port 21g is formed to extend rearward from the inside of the first support portion 21 so that the discharge port 21h is positioned near the right ear of the listener wearing the wearable speaker device 1.

Similarly, the bass reflex port 22g provided in the second support part 22 emits a low-frequency sound among the low-frequency sounds emitted from the vibration preventing part 22d. The bass reflex port 22g is formed to extend rearward from the inside of the second support portions 21 and 22 so that the discharge port 22h is positioned near the left ear of the listener wearing the wearable speaker device 1. .

In the wearable speaker device 1, even if the right speaker 11 and the left speaker 12 are made small for weight reduction, a deep bass feeling can be obtained by these bass reflex ports 21g and 22g.

(Second Embodiment)
FIG. 4 is a schematic top view for explaining the wearable speaker device according to the second embodiment of the present invention.
The wearable speaker device 3 in FIG. 4 is configured such that the right speaker 11 and the left speaker 12 are provided in front of the first and second support portions 31 and 32, respectively, similarly to the wearable speaker device 1 in FIGS. The vibration preventing portions 21d and 22d are provided in the first and second support portions 31 and 32, respectively.
However, the wearable speaker device 3 of FIG. 4 uses the passive radiators 31a and 32a as first and second support portions instead of the bass reflex ports 21g and 22g of the wearable speaker device 1 of FIGS. 31 and 32.

The passive radiator 31a provided in the first support part 31 generates a low-frequency sound among the low-frequency sounds generated from the back surface of the diaphragm 11a (see FIG. 2) of the right speaker 11 and emitted from the vibration preventing part 21d. It has a vibrating plate 31b that resonates and a housing portion 31c to which the vibrating plate 31b is fixed. The hollow portion of the housing portion 31c communicates with the hollow portion of the enclosure 11d through the hollow portion of the L-shaped portion 21a. This passive radiator 31 a is provided so as to be positioned near the right ear of the listener wearing the wearable speaker device 3.

The passive radiator 32a provided in the second support part 32 is adapted to generate a low-frequency sound among the low-frequency sounds generated from the back surface of the diaphragm 12a (see FIG. 2) of the left speaker 12 and emitted from the vibration preventing part 22d. It has a vibrating plate 32b that resonates and a housing portion 32c to which the vibrating plate 32b is fixed. The hollow portion of the housing portion 32c communicates with the hollow portion of the enclosure 11d through the hollow portion of the L-shaped portion 21a. The passive radiator 32a is provided so as to be located near the left ear of the listener wearing the wearable speaker device 3.

In the wearable speaker device 3, not only the passive radiators 31a and 32a provide a deep bass feeling, but also the diaphragms 31b and 32b of the passive radiators 31a and 32a vibrate due to low sounds, so that a higher sense of presence can be obtained. .

(Third embodiment)
FIG. 5 is a schematic top view for explaining a wearable speaker device according to the third embodiment of the present invention.
Like the wearable speaker device 1 of FIGS. 1 to 3, the wearable speaker device 4 of FIG. 5 is provided with a right speaker 11 and a left speaker 12 in front of the first and second support portions 41 and 42, respectively. The vibration preventing portions 21d and 22d are provided inside the first and second support portions 41 and 42, respectively.
However, the wearable speaker device 4 of FIG. 4 is different from the wearable speaker device 1 of FIGS. 1 to 3 in that it does not have a bass amplifying unit, and the bellows portions 41a and 42a formed in a bellows shape are provided in the first manner. And around the partition wall 23 of the second support portions 41, 42.

In the wearable speaker device 4, the bellows portions 41 a and 42 a expand and contract when the low-frequency sound is output, so that the first and second support portions 41 and 42 vibrate left and right, so that a higher sense of presence can be obtained.

1 to 3 and the wearable speaker device 3 of FIG. 4 may be provided with a bellows portion as with the wearable speaker device 4, even if the configuration has a low-frequency amplification unit. Good.

(Fourth embodiment)
FIG. 6 is a schematic top view for explaining a wearable speaker device according to the fourth embodiment of the present invention.
Like the wearable speaker device 1 of FIGS. 1 to 3, the wearable speaker device 5 of FIG. 6 is provided with a right speaker 11 and a left speaker 12 in front of the first and second support portions 51 and 52, respectively. Further, the bass reflex ports 21g and 22g are provided in the first and second support portions 51 and 52, respectively.

Further, the wearable speaker device 5 of FIG. 6 has vibration preventing portions 51a and 52a for preventing transmission of middle and high sounds, similar to the wearable speaker device 1 of FIGS. 1 to 3, but the configuration thereof is different.

Specifically, the vibration preventing portion 51a of the first support portion 51 is provided inside the side of the first support portion 51 and between the right speaker 11 and the bass reflex port 21g. The vibration preventing portion 51a is a passive radiator, and includes a wall 51b that separates a hollow portion on the right speaker 11 side of the first support portion 51 from a hollow portion on the bass reflex port 21g side. A diaphragm 51b that resonates with low-frequency sound generated from the back surface of the diaphragm 11a (see FIG. 2) of the speaker 11 is provided.
By the vibration preventing unit 51a, middle and high sounds from the back surface of the diaphragm 11a of the right speaker 11 are transmitted to the bass reflex port 21g side of the first support unit 51, that is, the portion of the first support unit 51 that contacts the listener. Can be transmitted and bass can be transmitted.

Further, the vibration preventing portion 52a of the second support portion 52 is provided inside the side of the second support portion 52 and between the left speaker 11 and the bass reflex port 22g. The vibration preventing portion 52a is a passive radiator, and has a wall 52b that separates a hollow portion on the left speaker 12 side of the second support portion 52 from a hollow portion on the bass reflex port 22g side. A diaphragm 52b that resonates with low-frequency sounds generated from the back surface of the diaphragm 11a (see FIG. 2) of the speaker 11 is provided.
By the vibration preventing unit 52a, middle and high sounds from the back surface of the diaphragm 12a of the left speaker 12 are transmitted to the bass reflex port 22g side of the second support unit 52, that is, the portion of the second support unit 52 that contacts the listener. Can be transmitted and bass can be transmitted.

In addition, even if it is the example which uses the bass amplification part of 2nd Embodiment, or the example which has a bellows part of 3rd Embodiment, you may use the vibration prevention part which consists of a passive radiator provided inside.

(Fifth embodiment)
7A and 7B are diagrams for explaining a wearable speaker device according to a fifth embodiment of the present invention. FIG. 7A is a schematic top view, and FIG. 7B is a cross section near the right speaker 11 ′. FIG.

In the wearable speaker device 1 ′ shown in FIG. 7A, as with the wearable speaker device 1 shown in FIG. 3, bass reflex ports 21g and 22g are provided on the first support portion 21 ′ and the second support portion 22 ′, respectively. Yes.

On the other hand, in the wearable speaker device 1 of FIG. 3, the right speaker 11 and the left speaker 12 are supported by the first and second support portions 21 and 22 at positions that are in front of the listener when worn.
On the other hand, in the wearable speaker device 1 ′ shown in FIG. 7A, the right speaker 11 ′ and the left speaker 12 ′ are placed outside the listener by the first and second support portions 21 ′ and 22 ′. It is supported.

In the wearable speaker device 1 ′, the C-shaped portion of the first support portion 21 ′ mounted on the listener is connected to the right speaker 11 ′ through the first connecting portion 21d ′. Further, as shown in FIG. 7B, the hollow portion of the enclosure 11d of the right speaker 11 ′ and the hollow portion of the C-shaped portion of the first support portion 21 ′ viewed from above are communicated by the first connecting portion 21d ′. ing. And this 1st connection part 21d 'is formed thinly, and is a vibration prevention part which prevents the transmission to the back of a middle high tone. In other words, the diaphragm 11a and the drive part 11b of the right speaker 11 'are supported by the first connecting part 11', and the first connecting part 11 'as a support member constitutes an enclosure, and the vibration prevention Part.

Although illustration is omitted, the left speaker 12 ′ is the same as the right speaker 11 ′. In the wearable speaker device 1 ′, the C-shaped portion of the second support portion 22 ′ viewed from the top and the left speaker 12 ′ The two connecting portions 22d 'are connected. Further, the hollow portion of the enclosure 12d of the left speaker 12 'and the hollow portion of the C-shaped portion of the second support portion 22' viewed from above are communicated by the second connecting portion 22d '. And this 2nd connection part 22d 'is a vibration prevention part which prevents the transmission to the back of middle high-pitched sound. In other words, the diaphragm 12a and the drive part 12b of the left speaker 12 'are supported by the second connecting part 12', and the second connecting part 12 'as a support member constitutes an enclosure, and the vibration preventing part is provided. It is composed.

The first and second connecting portions 21d 'and 22d' serving as vibration preventing portions are connected to the listeners in the first and second support portions 21 'and 22'. It is possible to prevent middle and high sounds from being transmitted from the rear surfaces of the diaphragms 11a and 12a and to transmit low sounds.

As described above, in the wearable speaker device 1 ′, the first and second connecting portions 21 d ′ and 22 d ′ prevent middle and high sounds from being transmitted to the portion that contacts the listener when worn. In addition, unpleasant vibrations caused by middle and high sounds are unlikely to occur, and only low-frequency vibrations are generated, so that a high sense of realism can be obtained.
Further, unlike the wearable speaker device 1 shown in FIG. 3, the wearable speaker device 1 ′ does not require the vibration preventing portion to be formed in the first and second support portions, and the first and second support portions are simple. Therefore, it can be easily manufactured.

In the example shown in the figure, the right speaker 11 ′ and the left speaker 12 ′ are supported with the diaphragms 11 a and 12 a facing in opposite directions. However, the directions of the right speaker 11 ′ and the left speaker 12 ′ are not limited to the above-described example, and may be backward.

(Sixth embodiment)
FIG. 8 is a schematic top view for explaining a wearable speaker device according to a sixth embodiment of the present invention.
The wearable speaker device 3 ′ of FIG. 8 employs the support structure of FIG. 7 as the support structure of the right speaker and the left speaker in the wearable speaker device 3 of FIG.
Also in the wearable speaker device 3 ′, a feeling of heavy bass is obtained by the passive radiators 31a and 32a, and the middle and high frequency vibrations can be eliminated by the first and second connecting portions 21d ′ and 22d ′, and the passive radiator 31a. Since the diaphragms 31b and 32b of 32a vibrate due to low sounds, a higher sense of presence can be obtained.

(Seventh embodiment)
FIG. 9 is a schematic top view for explaining a wearable speaker device according to a seventh embodiment of the present invention.
The wearable speaker device 4 ′ of FIG. 9 employs the support structure of FIG. 7 as the support structure of the right speaker and the left speaker in the wearable speaker device 4 of FIG.
Also in the wearable speaker device 4 ′, a heavy bass sound can be obtained by the passive radiators 31a and 32a, and the middle and high frequency vibrations can be eliminated by the first and second connecting portions 21d ′ and 22d ′, and the passive radiator 31a. Since the diaphragms 31b and 32b of 32a vibrate due to low sounds, a higher sense of presence can be obtained.

Also in the wearable speaker device 4 ′, the first and second connecting portions 21d ′ and 22d ′, that is, the vibration preventing portion removes middle and high frequency vibrations, and the bellows portions 41a and 42a expand and contract to expand and contract the first and second. Since the support portions 21 ′ and 22 ′ adopt a structure that vibrates left and right, a higher sense of presence can be obtained.

(Eighth embodiment)
FIG. 10 is a schematic top view for explaining a wearable speaker device according to an eighth embodiment of the present invention.
The wearable speaker device 6 shown in FIG. 10 is similar to the wearable speaker device 4 ′ shown in FIG. 9 by first and second support portions 61 and 62 in which the right speaker 11 ′ and the left speaker 12 ′ also function as respective enclosures. More specifically, the right speaker 11 ′ and the left speaker 12 ′ are supported via first and second connecting portions 21d ′ and 22d ′ that function as vibration preventing portions.

However, the wearable speaker device 6 of FIG. 10 does not have the bellows portions 41a and 42a, unlike the wearable speaker device 4 ′ of FIG. Instead, when the wearable speaker device 6 is mounted on the first and second support portions 61 and 62, the mounting portions 61a and 62a that come into contact with the chest of the listener are made of a flexible member such as foam rubber / sponge rubber. The mounting portions 61a and 62a vibrate. Further, the first and second connecting portions 21d ′ and 22d ′ functioning as vibration preventing portions prevent middle and high tone components from being transmitted to the mounting portions 61a and 62a. Therefore, in the wearable speaker device 6, since the mounting portions 61a and 62a vibrate due to the low sound component, a higher sense of reality can be obtained. Further, since the mounting portions 61a and 62a vibrate due to the low frequency component, a low sound is generated from the mounting portions 61a and 62a, so that the bass can be reinforced. Furthermore, since the wearable speaker device 6 uses a flexible member, the wearable feeling is good, and the weight can be reduced compared to a configuration using a passive radiator or the like.

In the wearable speaker device 6, the first support portion 61 and the second support portion 62 are not directly connected but are connected via a bar 63 made of a material having rigidity, and the mounting portion 61a. The hollow portion and the enclosure of the right speaker 11 'are communicated with each other through a first connecting portion 21d', and the hollow portion of the mounting portion 62a and the enclosure of the left speaker 12 'are communicated with each other through a second connecting portion 22d'. ing.
The bar 63 can be mounted with a circuit board for controlling the drive units of the right speaker 11 ′ and the left speaker 12 ′.

Although not particularly illustrated above, it is preferable that the wearable speaker device of the present invention is covered with a cover formed of an elastic material, such as a neck portion and a shoulder portion, which comes into contact with the listener when worn.

Also, in the wearable speaker device of the above example, the support member is attached to the neck and shoulder. However, the wearable speaker device may be mounted on the chest or abdomen.

The wearable speaker device of the present invention includes a speaker having a diaphragm, a drive unit that drives the diaphragm, and an enclosure that covers the drive unit in a state where the diaphragm is exposed, and the enclosure can be attached to a listener. And a vibration preventing unit that prevents transmission of middle and high sounds. With such a configuration, it is possible to suppress the vibration caused by the middle and high sounds and obtain a high sense of reality by the vibration caused by the low sounds.

The vibration preventing unit has, for example, a ducted hole or a passive radiator provided inside the enclosure.
The enclosure is preferably provided with a bass amplifying unit for amplifying bass. Thereby, a heavy bass feeling is obtained.
The enclosure may be provided with a bellows portion formed in a bellows shape.
The enclosure is configured to be attachable to, for example, a listener's neck and / or shoulder.

The wearable speaker device may include a support member that supports the diaphragm and the drive unit, and the support member may constitute the enclosure and the vibration prevention unit.

Also, the portion of the enclosure that contacts the listener should be made of a flexible member.

Next, an example without a vibration preventing unit will be described. The wearable speaker device of this example is for solving the following problems. That is, as in Patent Documents 1 to 3, in a wearable speaker device in which the position of the speaker is close to the ear, if the speaker is facing the ear of the listener wearing the device, the sound when the listener turns his neck left and right Pressure change is severe. When the sound pressure change is severe, the sensory sound source is positioned around the speaker, and an unnatural sound field is felt. If the speaker is facing the listener's ear as described above, the sound output from the right-ear speaker is heard by the left ear and output from the left-ear speaker when the sound has no directivity. Sound can be heard in the right ear, resulting in a loss of stereo. Therefore, in the wearable speaker device of this example, the following configuration is adopted, so that a natural sound field can be reproduced and a stereo feeling can be obtained.

FIG. 11 is a perspective view of the wearable speaker device of this example. 12 and 13 are a top view and a front view of the wearable speaker device of FIG. 11, respectively.
The wearable speaker device 7 shown in FIG. 11 is worn by a listener, and includes a right speaker 11 that outputs a right ear sound, a left speaker 12 that outputs a left ear sound, and a right speaker 11. And a support member 70 that supports the left speaker 12.

The wearable speaker device 7 is formed in an annular shape when viewed from above, as shown in FIG.
The support member 70 is formed in a C shape in a top view and is formed in a first support portion 71 in which the right speaker 11 is provided in front, a shape symmetrical to the first support portion 71 and left The speaker 12 has a second support portion 72 provided in the front. The first and second support portions 71 and 72 are each formed of a cylindrical hollow member. The end of the first support 71 opposite to the side where the right speaker 71 is provided and the end of the second support 72 opposite to the side where the left speaker 72 is provided are connected by bonding or the like. ing. A partition wall 23 is provided at a connection portion between the first support portion 71 and the second support portion 72 at the rear, and the hollow portion of the first support portion 71 and the second support portion are provided by the partition wall 23. 72 hollow parts are divided.

Further, the right speaker 11 and the left speaker 12 respectively vibrate vibration plates 11a and 12a that generate sound, drive units 11b and 12b that drive the vibration plates 11a and 12a, and vibration plates 11a and 12a and a drive unit. Frames 11c and 12c for supporting 11b and 12b, and speaker boxes 11d and 12d for covering the diaphragms 11a and 12a and the drive units 11b and 12b. The diaphragms 11a and 12a and the drive units 11b and 12b are fixed to the speaker boxes 11d and 12d via the frames 11c and 12c.

The right speaker 11 and the left speaker 12 are supported by the support member 70 with the diaphragms 11a and 12a facing in opposite directions. More specifically, in a state in which the direction in which the diaphragm 11a is positioned with respect to the drive unit 11b of the right speaker 11 and the direction in which the diaphragm 12a is positioned with respect to the drive unit 12b of the left speaker 12 are opposite to each other. The right speaker 11 and the left speaker 12 are supported by a support member 70.

Further, as shown in FIG. 13, the first support portion 71 has an L-shaped portion 21a that is L-shaped when viewed from the front, and the right speaker 11 is provided at the upper end of the L-shaped short side portion 21b. The short side portion 21b extends in the vertical direction, and the long side portion 21c extends in the vibration direction X1 of the diaphragm 11a of the right speaker 11. Further, the remaining portion of the first support portion 71 exists behind the long side portion 21c of the L-shaped portion 21a.
Similarly, the 2nd support part 72 has the reverse L-shaped part 22a of the reverse L shape in which the L character reversed right and left in front view, and the left speaker 12 on the upper end of the reverse L-shaped short side part 22b. The short side portion 22b extends in the vertical direction, and the long side portion 22c extends in the vibration direction X2 of the diaphragm 12a of the left speaker 12. Further, the remaining portion of the second support portion 72 exists behind the long side portion 22c of the inverted L-shaped portion 22a.
In this manner, the output surfaces of the right speaker 11 and the left speaker 12 are not blocked by the first and second support portions 71 and 72.

The hollow portion of the speaker box 11d of the right speaker 11 and the hollow portion of the first support portion 71 may be continuous or discontinuous. Similarly, the hollow portion of the speaker box 12d of the left speaker 12 and the hollow portion of the second support portion 72 may be continuous or discontinuous.

The state of viewing the listener wearing the wearable speaker device 7 of FIGS. 11 to 13 from an oblique front is the same as in FIG.
The wearable speaker device 7 is attached to the listener U in such a form that the rear end of the support member 20 is hung on the neck of the listener U. When the speaker device 7 is mounted, the lower surface of the side portion of the support member 70 is in contact with the shoulder or chest of the listener U, and the right speaker 11 and the left speaker 12 are located at the front neck of the listener U's face.

Further, when the wearable speaker device 7 is attached, the diaphragm 11a of the right speaker 11 faces the right side of the listener U, and the diaphragm 12a of the left speaker 12 faces the left side of the listener U.
In other words, the support member 70 also serves as a mounting member that mounts the two speakers 11 and 12 that are supported on the front surface of the listener U with the diaphragms 11a and 12a facing the listener U side. Yes.
The diaphragm 11a of the right speaker 11 and the diaphragm 12a of the left speaker 12 are preferably positioned between the right ear and the left ear of the listener U when the wearable speaker device 7 is attached.

FIG. 14 is a contour diagram showing the sound pressure distribution when sound is output from the right speaker 11 and the left speaker 12 of the wearable speaker device 7 of FIGS. FIG. 15 is a contour diagram showing the sound pressure distribution when sound is output from the wearable speaker device of the comparative example.
In the wearable speaker device of the comparative example described in FIG. 15, when the listener wears, the right speaker and the left speaker are positioned in front of the listener's neck as in the above-described wearable speaker device 7. Unlike the speaker device 7, the diaphragms of the right speaker and the left speaker are directed toward the right and left ears of the listener, respectively. Therefore, in the wearable speaker device of the comparative example, as shown in FIG. 15, the sound pressure distribution with the diaphragm of the right speaker as the sound source S11 and the sound pressure distribution with the diaphragm of the left speaker as the sound source S12 are respectively There are significant changes near the ear and left ear.

On the other hand, the wearable speaker device 7 has the right speaker 11 and the left speaker 12 positioned in front of the listener's neck, as described above, when the listener wears the diaphragm, and the diaphragms of the right speaker 11 and the left speaker 12. 11a and 12a face the right and left sides of the listener, respectively. Therefore, in the wearable speaker device 7, as shown in FIG. 14, the listener's ear has the sound pressure distribution with the diaphragm 11a of the right speaker 11 as the sound source S1 and the sound pressure distribution with the diaphragm 12a of the left speaker 12 as the sound source S2. The change in the vicinity is extremely small as compared with the wearable speaker device of the comparative example of FIG. As described above, the wearable speaker device 7 can reproduce a natural sound field in which a speaker is arranged in a wide space because a change in sound pressure when the attached listener turns his / her neck from side to side is small.

Further, in the wearable speaker device 7, the diaphragms 11a and 12a of the right speaker 11 and the left speaker 12 are directed to the right and left sides of the listener, respectively, so that the sound from the right speaker 11 and the sound from the left speaker 12 are And separation is good. Therefore, the wearable speaker device 7 can provide a sense of stereo such as a sense of spread.

Further, in the wearable speaker device 7, when the right speaker 11 and the left speaker 12 output sound simultaneously, unnecessary vibrations generated in portions other than the diaphragm 11a due to the right speaker 11 outputting sound, Unnecessary vibrations generated in portions other than the diaphragm 12a due to the sound output from the speaker 12 cancel each other. Therefore, the sound quality is not impaired by these unnecessary vibrations, and the user wearing the wearable speaker device 7 does not feel uncomfortable due to the vibrations.

In the same manner as the wearable speaker device 7, the headphone worn by the listener is deformed due to pressure on the auricle when worn. The sound from the headphones is unnaturally heard because it is reflected by the deformed pinna and enters the ear. However, since the auricle is not deformed even when the wearable speaker device 7 is attached, the sound from the wearable speaker device 7 can be heard naturally.

Further, the wearable speaker device 7 can be used for a long time without fatigue because the sound image is localized outside the head.
Further, the wearable speaker device 7 can produce an interval wrapped in sounds from front, back, left and right.
In the wearable speaker device 7, since the speakers 11 and 12 are positioned near the ear, a powerful sound can be brought close to the listener even if the volume is not high.

In the wearable speaker device described above, the support member, that is, the mounting member, is mounted on the neck and shoulder. However, when the wearable speaker device is mounted, if the two speakers with the diaphragms facing in opposite directions are positioned in front of the listener with the diaphragms facing the listener's side, The mounting member may be mounted in any form. For example, the wearing member of the wearable speaker device may have a form in which loops passing through the right arm and the left arm are provided at both ends and worn on the shoulder.

FIG. 16 is a diagram for explaining another form of the wearable speaker device of this example, and shows a state in which a listener wearing the wearable speaker device is viewed from an oblique front.
In the wearable speaker device 8 of FIG. 16, a support member 80 that supports the two speakers 11 and 12 and is attached to the listener U is formed in a belt shape and is fixed to the abdomen of the listener U by a buckle (not shown). The speakers 11 and 12 can be attached to and detached from the buckle. Further, the wearable speaker device 8 has the support members 80 attached to the abdomen of the listener U as shown in FIG. 7, and the speakers 11 and 12 are attached to the buckle when the buckle is located in front of the listener U. Then, the diaphragms of the speakers 11 and 12 are directed in opposite directions and directed to the side of the listener U.

When the listener U wears the wearable speaker device 8, for example, first, the support member 80 with the speakers 11 and 12 removed is rubbed against the abdomen, and the support member 80 is fixed to the abdomen with a buckle. Then, by attaching the speakers 11 and 12 to the buckle, the speakers 11 and 12 can be mounted at predetermined positions in a predetermined state.
Although the speakers 11 and 12 can be attached to and detached from the buckle, the speakers 11 and 12 may be fixedly supported at a position where the buckle fastening operation is not hindered.
In this example, the support member is formed in a belt shape and attached to the abdomen. However, the support member may be formed in a belt shape and attached to the neck and chest.

In yet another form of the wearable speaker device of this example, the support member that supports the two speakers and is attached to the listener is formed in a hat shape and is attached to the head, and the heel portion of the hat Two speakers are supported. In this wearable speaker device, when the heel portion is mounted on the listener so that the heel portion is located in front of the listener, the diaphragms of the two speakers are directed in opposite directions and toward the listener's side. .

In the form of FIG. 11 and the like described above, the speaker box of the left speaker and the speaker box of the right speaker are not connected in the front, but may be connected via other members, or the speaker boxes are directly joined to each other. Or may be in contact with each other. Moreover, the speaker box of the left speaker and the right speaker may be integrally formed, and a partition wall may be provided between the driving unit and the driving unit.

Since the high-frequency component of the sound is directional, the wearable speaker device of this example may make it difficult to hear the high-frequency sound from each speaker. However, if the high-frequency sound is emphasized and reproduced, the sound close to the original sound may be heard. Can be heard.

The wearable speaker device of this example includes two speakers each having a diaphragm and a drive unit that drives the diaphragm, and a support member that supports the two speakers in a state in which the diaphragms face in opposite directions. And a mounting member that mounts the two supported speakers on the front of the listener in a state where the diaphragm is directed to the side of the listener. With such a configuration, a natural sound field can be reproduced and a stereo feeling can be obtained.

The mounting member of this example may be mounted, for example, on the neck and / or shoulder of the listener, and may be mounted on the abdomen of the listener.

1, 3, 3 ', 4, 4', 5, 5 ', 6, 7, 8 ... wearable speaker device, 11, 11' ... right speaker, 12, 12 '... left speaker, 11a, 12a ... diaphragm, 11b, 12b ... drive unit, 11c, 12c ... frame, 11d, 12d ... enclosure, 20, 70, 80 ... support member, 21, 21 ', 31, 41, 51, 61, 62 ... first support unit, 22 , 22 ', 32, 42, 52, 71, 72 ... second support part, 21a ... L-shaped part, 22a ... reverse L-shaped part, 21d, 21d', 22d, 22d ', 51a, 52a ... vibration preventing part 21f, 22f ... holes with ducts, 21g, 22g ... bass reflex ports, 23 ... partition walls, 31a, 32a ... passive radiators, 41a, 42a ... bellows parts.

Claims (7)

1. A speaker having a diaphragm, a drive unit that drives the diaphragm, and an enclosure that covers the drive unit with the diaphragm exposed;
   The enclosure is
   It is configured to be worn by the listener,
   A wearable speaker device comprising: a vibration preventing unit that prevents transmission of middle and high sounds.
2. The wearable speaker device according to claim 1, wherein the vibration preventing unit includes a ducted hole or a passive radiator provided in the enclosure.
3. The wearable speaker device according to claim 1 or 2, wherein the enclosure is provided with a bass amplifying unit for amplifying bass.
4. The wearable speaker device according to any one of claims 1 to 3, wherein the enclosure is provided with a bellows portion formed in a bellows shape.
5. The wearable speaker device according to any one of claims 1 to 4, wherein the enclosure is configured to be attachable to a neck and / or a shoulder of the listener.
6. The wearable speaker device according to claim 1, further comprising a support member that supports the diaphragm and the drive unit, and the support member forms the enclosure and the vibration prevention unit.
7. The wearable speaker device according to claim 1, wherein a portion of the enclosure that contacts the listener is formed of a flexible member.

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