JP2019075708A - Speaker device - Google Patents

Abstract

To provide a speaker device capable of performing acoustic reproduction with excellent presence while keeping an excellent wearing feeling when being worn around a neck.SOLUTION: A speaker device includes: a support body 10 to be bent in a U shape; housings 20, 20 respectively arranged on both sides of the support body 10; and speaker units 30, 30 attached to the housings 20, 20. The support body 10 is formed to be hollow and at least partially has a drone cone 13. The drone cone 13 includes: a holding member 14 constituted by an elastic material; and a vibration member 15 held by the holding member 14, and is constituted to have a cylindrical shape as a whole so as to allow the housings 20, 20 on both sides to communicate with each other through an inner part.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a speaker device, and more particularly, to a speaker device that can be used by a user by hanging it around the neck.

  Headphones and earphones have been widely used as devices for listening to voice and music reproduced by a sound reproducing device. Headphones and earphones can be used when traveling or going out because they are easy to carry with the portable player, but when attached to both ears, most external sounds are blocked, so you can walk or ride The risk of an accident may increase while driving.

  For this reason, there is known a speaker for necking, in which the speaker is disposed in the vicinity of both ears in a state where the user hangs on the neck without being directly worn on the ear. For example, in Patent Document 1, a case provided with a speaker is attached to both sides of a neck support portion, and a sound image formed by sound from a sound emission port of the case is configured to be localized on the front side of a user. A neck speaker device is disclosed. A bass reflex hole is formed on the side of the case to improve bass reproduction.

  In the device disclosed in the above-mentioned Patent Document 1, the bass reproduction from the case is performed using Helmholtz resonance. The Helmholtz's resonant frequency can be determined based on the internal volume of the case, the shape and size of the bass reflex hole, etc., but the size of the case becomes too large for good bass reproduction. There was a problem in terms of Furthermore, since reproduction of sound is performed exclusively from two cases and sound image localization is performed, there is also a problem that the stereoscopic effect of sound is poor and it is difficult to obtain natural presence and surround feeling.

  Patent Document 2 discloses a wearable speaker device in which left and right speakers are connected by a flexible duct, and a drone cone (passive radiator) is provided at the center of the duct.

  However, the drone cone of the wearable speaker device disclosed in Patent Document 2 has a general configuration in which a planar shaped diaphragm is supported by an edge provided around the diaphragm, and in order to obtain good bass reproduction. Since the diaphragm is large, it is necessary to make the housing for accommodating the same large. For this reason, when the wearable speaker device is hung on the neck, the edge of the housing and the like hit the back neck portion of the neck and the like, and the feeling of wearing worsens, so it is not suitable for necking.

Japanese Patent Application Laid-Open No. 6-178384 US Patent Application Publication No. 2014/0126760 (FIG. 1)

  Then, this invention aims at provision of the speaker apparatus which can perform sound reproduction which is excellent in presence feeling, maintaining a feeling of wearing when it hangs on a neck favorably.

  The object of the present invention is a speaker device comprising a U-shaped curved support, housings provided respectively on both sides of the support, and a speaker unit attached to the housing, the support Is formed in a hollow shape and at least a portion thereof is provided with a drone cone, and the dron cone includes a holding member made of an elastic material and a vibrating member held by the holding member, and through the inside This is achieved by a speaker device that is generally cylindrically configured to communicate the housings on both sides.

  In this speaker device, it is preferable that a plurality of the vibrating members be arranged at intervals in the longitudinal direction of the cylindrical shape. Alternatively, it is preferable that a plurality of the vibrating members be arranged at intervals in the circumferential direction of the cylindrical shape.

  The holding member can be formed of a flexible tube, and the vibrating member can be provided on the outer peripheral surface of the holding member.

  According to the present invention, it is possible to provide a speaker device capable of performing acoustic reproduction excellent in sense of reality while favorably maintaining a feeling of wearing when worn around the neck.

It is a front view of the speaker apparatus concerning one embodiment of the present invention. It is a longitudinal cross-sectional view of the speaker apparatus shown in FIG. It is AA sectional drawing of FIG. It is a front view which shows the principal part of the speaker apparatus which concerns on other embodiment of this invention. It is BB sectional drawing of FIG. It is a front view which shows the principal part of the speaker apparatus based on further another embodiment of this invention. It is a front view which shows the principal part of the speaker apparatus based on further another embodiment of this invention. It is sectional drawing which shows the principal part of the speaker apparatus based on further another embodiment of this invention. It is sectional drawing which shows the principal part of the speaker apparatus based on further another embodiment of this invention. It is sectional drawing which shows the principal part of the speaker apparatus based on further another embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the attached drawings. FIG. 1 is a front view of a speaker device according to an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the speaker device shown in FIG. As shown in FIGS. 1 and 2, the speaker device 1 includes a support 10, sealable housings 20 and 20 provided on both sides of the support 10, and a speaker unit 30 attached to the housings 20 and 20. , 30 and so on.

  The support 10 is formed in a hollow shape and has a U-shaped curved shape on both sides, and a pair of connecting cylinders 11 and 11 and a drone cone disposed between the connecting cylinders 11 and 11. It has 13 and. Each connecting cylinder 11 can be formed of, for example, a synthetic resin or the like, one end side is connected so as to communicate with the inside of the housing 20, and the tapered mounting portion 12 is provided on the other end side. The support 10 is preferably shaped so as to be stable when it is hung on the neck of the user, but in actual use it does not have to be necessarily hung on the neck. You can also The support 10 preferably has a smooth surface.

  The drone cone 13 includes a holding member 14 and a vibrating member 15 held by the holding member 14, and the holding member 14 and the vibrating member 15 constitute a vibration system. The holding member 14 is a flexible tube which is formed of an elastic material such as rubber or resin and is curved in an arc shape, and both ends thereof are attached to the attachment portions 12. The holding member 14 may be formed in advance in a curved shape, or may be elastically deformed and curved at the time of use.

  FIG. 3 is a cross-sectional view taken along the line AA of FIG. As shown in FIG. 3, the vibrating member 15 is a hollow disk-shaped member made of a high density metal material or the like, and the holding member 14 is inserted into the hollow portion of the vibrating member 15. The vibrating members 15 are arranged at intervals in the longitudinal direction of the holding member 14 and fixed to the outer peripheral surface of the holding member 14 so as to be orthogonal to the axis of the holding member 14. Although the size of the vibrating member 15 is not particularly limited, for example, the diameter is within 2 cm.

  Thus, the drone cone 13 is formed in a cylindrical shape as a whole, and the housings 20 and 20 on both sides are in communication with each other through the inside of the pair of connecting cylinders 11 and 11 and the drone cone 13.

  The speaker unit 30 has a known configuration that vibrates the diaphragm to generate sound on the basis of an audio signal input in a wired or wireless manner, and is attached to the front side of the housing 20 and is disposed in front of and within the housing 20 respectively. Output sound waves of opposite phase to each other.

  In the speaker device 1 having the above configuration, when the user hangs the support 10, the housings 20, 20 are arranged in the vicinity of the collarbone of the user with the speaker units 30, 30 facing forward and obliquely upward. When the speaker units 30, 30 are driven to input an audio signal, stereo sound is output from the front of the speaker units 30, 30.

  The sound output from the rear surface of the speaker units 30, 30 is transmitted to the inside of the cylindrical drone cone 13 via the inside of the pair of connecting cylinders 11, 11. The drone cone 13 resonates when the frequency component of the resonance frequency is included in the sound, and outputs the sound wave of the specific resonance frequency to the outside. Thus, a bass according to the resonance frequency of the drone cone 13 is output near the back of the user's head.

  The resonant frequency of the drone cone 13 is proportional to the reciprocal of the equivalent mass of the vibration system, and is further proportional to the stiffness of the vibration system. Therefore, in order to lower the resonance frequency, for example, it is necessary to increase the total mass of the vibrating member 15 within a fixed footprint. In the present embodiment, since the plurality of vibration members 15 are arranged at intervals in the longitudinal direction of the cylindrical drone cone 13, the communication passage of the support 10 communicating between the housings 20 and 20 on both sides is used. Thus, the required number of vibrating members 15 can be easily arranged in the longitudinal direction without increasing the diameter of the cross section of the communication passage, and a desired bass can be obtained.

  According to the speaker device 1 of the present embodiment, the sound image is localized from the vicinity of the user's ears to the front side by the sound output from the front surface of the speaker units 30, 30 as in the conventional speaker for necking The bass outputted from the drone cone 13 is outputted from the rear of the head of the user, and the sound output to the front side of the speaker units 30, 30 can be compensated. Therefore, in spite of the simple and power-saving configuration, sound reproduction with excellent presence can be performed, and for example, it can be suitably used for movie appreciation, music appreciation, and the like.

  In addition, the drone cone 13 includes a holding member 14 made of an elastic material and a vibrating member 15 held by the holding member 14, and is cylindrical as a whole so that the housings 20 and 20 on both sides communicate with each other through the inside. Since it is configured, it is possible to easily obtain an arbitrary bass resonance frequency while making the compact configuration in which the drone cone 13 does not get in the way at the time of necking. Furthermore, since the support member 10 can maintain a smooth surface free from the edge of the housing as in the conventional configuration, the wearing feeling can be improved. In addition, since an active element such as a woofer is unnecessary, cost reduction can be achieved.

  Further, as in the conventional speaker for necking, the speaker unit 30, 30 is disposed in front of the user, so that the center of gravity of the speaker device 1 is also located in front of the user. In addition to being obtained, it can be used safely while walking or riding a bicycle because both ears are not blocked.

  As mentioned above, although one embodiment of the present invention was explained in full detail, the concrete mode of the present invention is not limited to the above-mentioned embodiment. For example, in the present embodiment, the plurality of vibration members 15 are disposed along the longitudinal direction of the cylindrically shaped drone cone 13, but as shown in FIGS. 4 and 5, it is flexible. A vibrating member 15 made of a wire is arranged on the outer peripheral surface of the holding member 14 made of a tube so as to extend in the longitudinal direction of the holding member 14, and a plurality of vibrating members 15 are arranged circumferentially in the holding member 14. By doing this, the drone cone 13 can also be configured. 5 is a cross-sectional view taken along the line B-B in FIG.

  The drone cones 13 shown in FIG. 4 and FIG. 5 can be easily bent and a desired number can be arranged along the circumferential direction of the cylindrically shaped drone cones 13. Similar to the illustrated drone cone 13, a desired bass can be easily obtained while having a compact configuration.

  Further, as shown in FIG. 6, with respect to the holding member 14 made of a flexible tube, a plurality of small vibrating members 15 are arranged along both the longitudinal direction and the circumferential direction of the holding member 14. Then, the drone cone 13 may be configured such that each vibration member 15 can freely vibrate independently in the longitudinal direction and the circumferential direction.

  Further, although the holding member 14 of each of the above embodiments is made of a flexible tube to facilitate the manufacture of the drone cone 13 and the holding of the vibrating member 15, the vibrating member 15 can be reliably held. If it does, it does not necessarily have to be a tube. For example, as shown in FIG. 7, the drone cone is formed by connecting each of the plurality of vibration members 15 formed in a hollow disk shape with a plurality of cylindrical holding members 14 having a diameter smaller than that of the vibration members 15. 13 may be configured as a bellows cylinder as a whole. Alternatively, as shown in the cross-sectional view in FIG. 8, a plurality of vibrating members 15 made of a wire are arranged at intervals on the circumference, and they are mutually connected by a plurality of holding members 14 in a strip shape. 13 may be configured to be cylindrical as a whole.

  According to the configuration of the drone cone 13 shown in FIG. 7 and FIG. 8, the restriction at the time of vibration of each vibrating member 15 is reduced, so that large vibration can be obtained. Further, since the stiffness of the vibration system is also reduced, the mass of each vibration member 15 can be reduced or the area of the drone cone 13 can be reduced, and weight reduction and miniaturization can be achieved.

  The position of the drone cone 13 in this embodiment is arranged as a central portion of the support 10 and placed around the back neck of the user at the time of necking, but the central portion is not necessarily required. It is also possible to arrange at a position shifted to the left and right of ten. Further, instead of providing the drone cone 13 to a part of the support 10, the whole of the support 10 may be the drone cone 13.

  The drone cones 13 do not necessarily have to be single, and a plurality of drone cones 13 may be connected along the longitudinal direction. In this case, the intrinsic resonance frequencies of the drone cones 13 may be different from each other, whereby the bass band of the sound output from the support 10 can be expanded to further enhance the sense of reality.

  The arrangement of the vibration member 15 in the drone cone 13 is not limited to the above embodiments as long as the drone cone 13 is formed in a cylindrical shape as a whole, and it is possible to arrange a plurality of them arbitrarily. . Furthermore, the vibrating member 15 may not necessarily be plural, such as spirally winding the vibrating member 15 around the outer peripheral surface of the holding member 14 made of a flexible tube, and may be single.

  Moreover, as shown in FIG. 9, it is also possible to provide the cylindrical cover 16 which covers the drone cone 13. As shown in FIG. According to this configuration, since the drone cone 13 does not directly touch the neck or the like of the user, protection of the drone cone 13 can be achieved, and the feeling of wearing can be further improved. The cover 16 preferably has a reduced thickness or may form one or more sound outlets so that the bass generated by the drone cone 13 can be effectively transmitted to the user.

  Moreover, although the drone cone 13 of each said embodiment is comprised so that the vibration member 15 may be exposed outside, the structure which provided the vibration member 15 in the inside of the holding member 14 which consists of tubes may be sufficient. For example, it is possible to arrange a plurality of vibrating members 15 via a spacer or the like between them.

  In each of the embodiments described above, the cross-sectional shape of the vibrating member 15 is not particularly limited, and may be rectangular or the like in addition to the circular shape.

  Further, as shown in FIG. 10, the drone cone 13 can also be configured by embedding a plurality of vibrating members 15 in the circumferential direction at intervals in the thick portion of the holding member 14 made of a tube. .

  The speaker device 1 according to each of the above-described embodiments can be used not only for hanging but also as a stationary speaker device.

REFERENCE SIGNS LIST 1 speaker device 10 support 13 drone cone 14 holding member 15 vibrating member 16 cover 20 housing 30 speaker unit

Claims (4)

A speaker device comprising: a U-shaped curved support; housings provided respectively on both sides of the support; and a speaker unit attached to the housing,
The support is hollow and provided with a drone cone at least in part,
The drone cone includes a holding member made of an elastic material and a vibrating member held by the holding member, and is generally formed in a cylindrical shape so as to connect the housings on both sides via the inside. Speaker device.   The speaker device according to claim 1, wherein a plurality of the vibration members are arranged at intervals in the longitudinal direction of the cylindrical shape.   The speaker device according to claim 1, wherein a plurality of the vibration members are arranged at intervals in the circumferential direction of the cylindrical shape. The holding member is made of a flexible tube.
The speaker device according to any one of claims 1 to 3, wherein the vibrating member is provided on an outer peripheral surface of the holding member.

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