JP6582034B2 - Speaker device - Google Patents

Description

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

  2. Description of the Related Art Headphones and earphones have been widely used as devices for listening to voice and music reproduced by a sound reproducing device. Headphones and earphones are easy to carry with a portable player, so they can be used when moving or going out. However, when worn on both ears, the external sound is almost blocked, so walking and cycling There is a risk of increasing the risk of accidents while driving.

  For this reason, a neck-mounted speaker is known in which a speaker is arranged in the vicinity of both ears without being directly attached to the ear, with the user hung on the neck. For example, Patent Document 1 is configured to attach a case including a speaker to both sides of a neck hanging portion so that a sound image formed by sound from a sound outlet of the case is localized on the front side of the user. A neck speaker device is disclosed. Bass reflex holes are formed on the side surface of the case to improve bass reproduction.

  In the apparatus disclosed in Patent Document 1, bass reproduction from the case is performed using Helmholtz resonance. The resonant frequency of Helmholtz 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 is too large for good bass reproduction. There was a problem in terms. Furthermore, since sound reproduction is performed exclusively from two cases and the sound image is localized, there is a problem that it is difficult to obtain a natural sense of realism and surround sound due to poor three-dimensional sound.

  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 diaphragm is supported by an edge provided around it, and in order to obtain good bass reproduction. Since the diaphragm becomes large, it is necessary to increase the size of the housing that accommodates the diaphragm. For this reason, if the wearable speaker device is hung on the neck, the edge of the housing hits the rear neck of the neck and the like, and the feeling of wearing becomes worse, so it is not suitable for necking.

JP-A-6-178384 US Patent Application Publication No. 2014/0126760 (FIG. 1)

  Therefore, an object of the present invention is to provide a speaker device that can perform sound reproduction with excellent realism while maintaining a good feeling when worn on the neck.

The object of the present invention is a speaker device comprising a support body curved in a U-shape, housings respectively provided on both sides of the support body, and a speaker unit attached to the housing. Is formed in a hollow shape, and a drone cone is provided at least in part, and the drone cone includes a holding member made of an elastic material and a vibration member held by the holding member, and has an inside through the inside. The housings on both sides are communicated with each other so as to communicate with each other. The holding member is formed of a flexible tubular body, the vibration member is a hollow disk-shaped member, and the vibration member This is achieved by a speaker device in which the holding member is inserted into the hollow portion of the member .

In this speaker device, it is preferable that a plurality of the vibration members are arranged at intervals in the cylindrical longitudinal direction .

It is a front view of the speaker apparatus which concerns on one Embodiment of this 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 which concerns on further another embodiment of this invention. It is a front view which shows the principal part of the speaker apparatus which concerns on further another embodiment of this invention. It is sectional drawing which shows the principal part of the speaker apparatus which concerns on further another embodiment of this invention. It is sectional drawing which shows the principal part of the speaker apparatus which concerns on further another embodiment of this invention. It is sectional drawing which shows the principal part of the speaker apparatus which concerns on further another embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying 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 body 10, sealable housings 20 and 20 provided on both sides of the support body 10, and a speaker unit 30 attached to the housings 20 and 20. , 30.

  The support body 10 is formed in a hollow shape and has a shape in which both sides are curved in a U shape, and a pair of connecting cylinders 11 and 11 and a drone cone disposed between the connecting cylinders 11 and 11. 13. Each connection cylinder 11 can be formed, for example from a synthetic resin etc., and is connected so that one end side may connect with the inside of the housing 20, and the taper mounting part 12 is provided in the other end side. It is preferable that the support 10 has a shape that is stable when hung on the user's neck, but it does not necessarily have to be hung on the neck in actual use. You can also The support 10 is preferably formed with 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 formed of an elastic material such as rubber or resin and curved in an arc shape, and both ends thereof are mounted on the mounting portions 12. The holding member 14 may be formed in a curved shape in advance, or may be bent by being elastically deformed during use.

  3 is a cross-sectional view taken along the line AA in FIG. As shown in FIG. 3, the vibration 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 vibration member 15. A plurality of vibration members 15 are arranged at intervals in the longitudinal direction of the holding member 14, and are 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 magnitude | size of the vibration member 15 is not specifically limited, For example, it is less than 2 cm in diameter.

  As described above, the drone cone 13 is formed in a cylindrical shape as a whole, and the housings 20 and 20 on both sides are communicated with each other via the pair of connecting cylinders 11 and 11 and the inside of the drone cone 13.

  The speaker unit 30 has a known configuration in which sound is generated by vibrating a diaphragm based on an audio signal input in a wired or wireless manner. The speaker unit 30 is attached to the front side of the housing 20, and is arranged in front of and inside the housing 20. In addition, sound waves having opposite phases to each other are output.

  In the speaker device 1 having the above-described configuration, when the user hangs the support body 10 on the neck, the housings 20 and 20 are arranged in the vicinity of the user's clavicle with the speaker units 30 and 30 facing obliquely upward. When the speaker units 30 and 30 are driven and audio signals are input, stereo sound is output from the front surfaces of the speaker units 30 and 30.

  The sound output from the rear surfaces of the speaker units 30 and 30 is transmitted to the inside of the cylindrical drone cone 13 through the inside of the pair of connecting cylinders 11 and 11. The drone cone 13 resonates when the sound includes a frequency component of the resonance frequency, and outputs a sound wave having a specific resonance frequency to the outside. In this way, a bass corresponding to the resonance frequency of the drone cone 13 is output near the back of the user.

  The resonance frequency of the drone cone 13 is proportional to the reciprocal of the equivalent mass of the vibration system and 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 certain installation area. In the present embodiment, since the plurality of vibrating members 15 are arranged at intervals in the longitudinal direction of the cylindrical drone cone 13, the communication path of the support 10 that communicates between the housings 20 on both sides is used. Thus, the necessary number of vibrating members 15 can be easily arranged in the longitudinal direction without increasing the diameter of the cross section of the communication path, 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 surfaces of the speaker units 30 and 30, as in the conventional neck-mounted speaker. The bass output from the drone cone 13 is output from the back of the user's head, and the acoustic output to the front side of the speaker units 30 and 30 can be supplemented. Therefore, in spite of a simple and power-saving configuration, sound reproduction with excellent realism can be performed, and for example, it can be suitably used for movie appreciation and music appreciation.

  The drone cone 13 includes a holding member 14 made of an elastic material and a vibration member 15 held by the holding member 14, and has a tubular shape as a whole so as to communicate the housings 20 and 20 on both sides via the inside. Therefore, it is possible to easily obtain an arbitrary low frequency resonance frequency while having a compact configuration in which the drone cone 13 does not disturb the neck. Furthermore, since the support member 10 can maintain a smooth surface without 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.

  Moreover, since the speaker unit 30 is disposed in front of the user as in the case of a conventional neck speaker, the center of gravity of the speaker device 1 is also positioned in front of the user, so that a stable feeling of use can be obtained. In addition, since both ears are not blocked, it can be used safely when walking or riding a bicycle.

  As mentioned above, although one Embodiment of this invention was explained in full detail, the specific aspect of this invention is not limited to the said embodiment. For example, in the present embodiment, a plurality of vibrating members 15 are arranged along the longitudinal direction of the drone cone 13 configured in a cylindrical shape. However, as shown in FIGS. 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 the vibrating members 15 are arranged at intervals in the circumferential direction of the holding member 14. By doing so, the drone cone 13 can also be configured. 5 is a cross-sectional view taken along the line BB in FIG.

  The drone cones 13 shown in FIGS. 4 and 5 can be easily bent, and a desired number of drone cones 13 can be arranged along the circumferential direction of the drone cone 13 configured in a cylindrical shape. Similar to the drone cone 13 shown, a desired bass can be easily obtained with a compact configuration.

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

  Moreover, although the holding member 14 of each said embodiment is comprised with the flexible tube body, manufacture of the drone cone 13 and holding | maintenance of the vibration member 15 are made easy, but the vibration member 15 can be hold | maintained reliably. If it exists, it does not necessarily have to be a tubular body. For example, as shown in FIG. 7, each of the plurality of vibration members 15 formed in a hollow disk shape is connected by a plurality of cylindrical holding members 14 having a smaller diameter than the vibration member 15, thereby allowing the drone cone to You may comprise 13 in a bellows cylinder shape as a whole. Alternatively, as shown in a cross-sectional view in FIG. 8, a plurality of vibrating members 15 made of a wire rod are arranged at intervals on the circumference, and each is connected to each other by a plurality of belt-shaped holding members 14, so that the drone cone You may comprise 13 so that it may become a cylinder shape as a whole.

  According to the configuration of the drone cone 13 shown in FIGS. 7 and 8, since the restriction at the time of vibration of each vibration member 15 is reduced, a large vibration can be obtained. In addition, since the stiffness of the vibration system is reduced, the mass of each vibration member 15 can be reduced, or the area of the drone cone 13 can be reduced, and the weight and size can be reduced.

  In the present embodiment, the position of the drone cone 13 is configured so as to be arranged around the rear neck of the user at the time of necking as the central portion of the support body 10. It is also possible to arrange them at positions shifted to the left and right of 10. Further, the drone cone 13 may be the entire drone cone 13 instead of being provided on a part of the support 10.

  The drone cone 13 does not necessarily need to be a single one, and a plurality of drone cones 13 may be connected along the longitudinal direction. In this case, the natural resonance frequencies of the drone cones 13 may be different from each other, and thereby, the low frequency band of the sound output from the support 10 can be widened 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-described embodiments as long as the drone cone 13 is configured in a cylindrical shape as a whole, and a plurality of them can be arranged arbitrarily. . Furthermore, the vibration member 15 does not necessarily need to be plural, for example, the vibration member 15 is spirally wound around the outer peripheral surface of the holding member 14 made of a flexible tube, and may be a single.

  Further, as shown in FIG. 9, a cylindrical cover 16 that covers the drone cone 13 can be provided. According to this structure, since the drone cone 13 does not touch a user's neck etc. directly, while protecting the drone cone 13, a feeling of wear can be improved more. The cover 16 is preferably thin so that the bass generated by the drone cone 13 is effectively transmitted to the user, or may form one or a plurality of sound emission ports.

  In addition, the drone cone 13 of each of the above embodiments is configured such that the vibration member 15 is exposed to the outside, but may be configured such that the vibration member 15 is provided inside a holding member 14 formed of a tubular body. For example, it is possible to arrange a plurality of vibration members 15 via spacers or the like between them.

  In each said embodiment, the cross-sectional shape of the vibration member 15 is not specifically limited, A rectangular shape etc. may be sufficient besides circular shape.

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

  The speaker device 1 according to each of the above embodiments can be used as a hanging speaker device, in addition to being used as a neck.

DESCRIPTION OF SYMBOLS 1 Speaker apparatus 10 Support body 13 Drone cone 14 Holding member 15 Vibrating member 16 Cover 20 Housing 30 Speaker unit

Claims (4)

A speaker device comprising: a support body curved in a U-shape; housings provided on both sides of the support body; and a speaker unit attached to the housing,
The support is formed in a hollow shape and provided with a drone cone at least in part,
The drone cone includes a holding member made of an elastic material, and a vibration member held by the holding member, and is configured in a tubular shape as a whole so as to communicate the housings on both sides via the inside .
The holding member is made of a flexible tube,
The vibration member is a hollow disk-shaped member,
A speaker device in which the holding member is inserted into a hollow portion of the vibration member .   The speaker device according to claim 1, wherein a plurality of the vibration members are arranged at intervals in a cylindrical longitudinal direction. The speaker device according to claim 1, further comprising a cylindrical cover that covers the drone cone. The speaker device according to any one of claims 1 to 3, wherein the drone cone is provided at a central portion of the support so that the drone cone is disposed around a rear neck of a user when the neck is worn.

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