JP5853232B2 - Speaker device - Google Patents

Description

The present invention relates to a speaker device.

Conventionally, a speaker device is a device that stimulates human hearing and listens to sound. An electric signal is input to a vibration device, converted into vibration by the vibration device, and then transmitted to a sound generating portion to be emitted as sound. Various speaker devices are considered.

However, in the speaker device disclosed in Patent Document 1 below, the vibration generated from the sound source is the paper or synthetic resin that becomes the speaker provided in the same part of the rod-shaped member made of wood or bamboo directly through the rod-shaped member. However, it is only transmitted to the splash member made of foamed polystyrene, and has a problem that the sound range is narrow, for example, there is no low or high sound.

2009-159248

The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a speaker device that can emit a wide range of sounds.

In the speaker device according to the present invention, a vibration generating means is provided at an end of the vibration transmitting means, and the vibration generated by the vibration generating means is transmitted to the sound generating body by the vibration transmitting means and radiated as a sound from the sound generating body. The vibration transmitting means is formed of a rod-shaped body having a fiber structure that can provide a plurality of sound generators at appropriate positions and transmit vibrations, and the sound generator is curved. The speaker device is formed and provided with at least one or more sound generators in the vibration transmission means, and the end of the driving means provided in the vibration generation means is free at the end. An amplifying means is provided, the amplifying means is provided with a fixing means, and the vibration transmitting means is coupled to the vibration generating means in the vicinity of the center axis of vibration in the fixing means. Characterized in that the coupling means are provided.
The vibration transmitting means is preferably formed of an air-drying material such as a plant stem, leaf, branch, epidermis, or woody part, and a groove for detachably attaching the sound generator is formed.
The sound generator preferably has a fiber structure.

The present invention is a speaker device in which vibration generating means is provided at an end of the vibration transmitting means, and vibration generated by the vibration generating means is transmitted to the sound generating body by the vibration transmitting means and radiated as sound from the sound generating body. The vibration transmission means can be provided with a plurality of the sound generators at appropriate positions and is formed by a rod-like body having a fiber structure for transmitting vibrations, and the sound generator is formed in a curved surface, A speaker device in which at least one or more of the sound generators is provided in a vibration transmitting means, and an amplifying means having a free end is provided at the tip of the driving means provided in the vibration generating means. The amplifying means is provided with fixing means, and the fixing means is provided with coupling means for coupling the vibration transmitting means to the vibration generating means in the vicinity of the center axis of vibration. It since characterized in that, there is an effect that a sound generator that different vibration transmitting means can listen to music range tastes can be attached to taste.
According to a second aspect of the present invention, the vibration transmitting means is composed of an air-drying material such as a plant stem, leaf, branch, epidermis, and wood part, and a groove for detachably attaching the sound generator is formed. What has the effect is that there is no sound attenuation and a clear sound is produced.
In addition, as described in claim 3, the sound generator having a fiber structure is further effective in that there is no sound attenuation and a clear sound is produced.

FIG. 1 is an external perspective view of a speaker device according to a first embodiment of the present invention. FIG. 2 is an explanatory view showing an example of a vibration transmitting member used in the present invention. FIG. 3 is an explanatory diagram showing an example of a sound generator used in the present invention. FIG. 4 is an external perspective view showing an example of a vibration generator used in the present invention. FIG. 5 is a cross-sectional view showing an example of a vibration generator used in the present invention. FIG. 6 is an external perspective view of the speaker device according to the second embodiment. FIG. 7 is an external perspective view of the speaker device according to the third embodiment. FIG. 8 is an external perspective view of the speaker device according to the fourth embodiment. FIG. 9 is an explanatory diagram of the speaker device according to the fifth embodiment. FIG. 10 is an explanatory diagram of the speaker device according to the sixth embodiment.

Hereinafter, a first embodiment of the speaker of the present invention will be described with reference to FIGS.
As shown in FIG. 1, the speaker device 1 according to the first embodiment includes a vibration transmission unit 2, a plurality of sound generators 3, and a vibration generation unit 4. The sound generator 3 is formed in three different shapes, 3 (a), 3 (b), and 3 (c), and the sound range generated by the difference in the shape of the curved surface is different. By disposing the speaker in the position, it is possible to obtain a speaker having a wide sound range radiated as sound and a wide sound directionality.

  The vibration transmission means 2 is formed of a rod-shaped body having a fiber structure. For example, it is made of air-drying material of plant stems, leaves, branches, epidermis and woody parts. The thin, long and strong fiber structure that is naturally generated by the vitality of the plant is drastically improved in sound transmission by drying. For example, when the harvested straw and cocoons dry, the movement of small insects attached to the tree makes a loud noise, and when the woodpecker dies and makes a nest in a dead tree, the sound that pricks the trunk to the treetop is transmitted to the treetop. A loud sound that reverberates is generated. Further, in the measurement of the Young's modulus (flexure strength) of wood, a known test method is used in which the strength of the fiber structure, which is a measure of the flexure strength, is determined by dents. Lightly tap a small edge at one end of felled wood and measure the dent sound at the other small edge, but it can be said to be a method using the sound transmission characteristics of the intracellular fiber structure of wood. . When the fiber structure of the plant is dried, it has a proper air layer inside and the sound transmission characteristics are enhanced without being affected by excessive moisture. Therefore, when used as the vibration transmission means 2, the fixing means 43 is provided. By coming into contact with the coupling hole 44, vibration generated from the actuator 40 of the vibration generating means 4 is transmitted and amplified by the driving means 41 to the amplifying means 42, and the amplified strong vibration is transmitted to the fixing means 43, and the vibration transmitting means. 2 is coupled to the fixing means 43 and is transmitted while being amplified inside the fiber structure. Therefore, even if a plurality of sound generators 3 are provided, transmission loss is small and vibration can be transmitted to the end.

  When the vibration transmitting means 2 is a stem having a low bending strength of plants, the inside may be reinforced with a metal or plastic core material. Moreover, the thing which strengthened glass fibers, such as carbon fiber and FRP, may strengthen the paper and textiles, and may be what was formed in the rod shape, Preferably, by natural production | generation It is good to use natural fiber material formed. Natural fiber materials include stems and leaves of plants, branches and epidermis, solid wood of wood materials, laminated timber, plywood, wood fiberboard, bamboo fibers and tree branches, but are restricted by these is not. More preferably, a solid wood air-drying material is preferable. In this case, the rod-shaped body has a sufficient strength to support the sound generator, and further, strong vibration transmitted from the vibration generating means 4 is generated as sound by appropriate internal loss (stress) inside the fiber structure of the vibration transmitting means 2. Since the vibration is transmitted to the end portion while radiating, there is an effect that there is no attenuation of the sound as a whole while resonating with the sound radiated as a sound from the sound generator and a clear sound is produced.

  More preferably, an air-drying material of a tree branch is preferable. In this case, since the fiber structure of the portion branched by the natural growth force includes a tree core and is complex, the fibers are continuous from the original to the tip, so that sound is generated in the vibration transmitting means 2 as shown in FIG. A groove for attaching the body can be appropriately provided. For example, the oblique groove 24 can be provided at any position of the branch, the groove 23 can be provided at the branched fork, the groove 22 can be provided at the branched branch point, and the end of the branch can be provided. By providing the groove 21 in the part, it is possible to receive a flow of vibration transmission. Further, since the coupling means 20 for inserting into the coupling hole 44 (FIGS. 4 and 5)) of the fixing means 43 (FIGS. 4 and 5) is formed at one end, it is inserted into the coupling hole 44. Thus, the vibration transmitting means 2 is integrated with the vibration generating means 4 via the amplifying means 42, and the vibration generated by the vibration generating means 4 is interrupted from the coupling means 20 of the vibration transmitting means 2 to the tip 21 as a strong amplified vibration. The vibration can be efficiently transmitted to the end of the sound generator and the vibration transmitting means 2 by the continuous fiber structure.

The sound generator 3 forms a curved body by sticking the both ends of the front and back sides of a sheet-like thin plate, and generates vibration in the sound by applying stress (internal loss) to the inside of the sheet-like thin plate. And radiated. 3A is a conical cylindrical shape, and FIG. 3B is a sheet-like plan view formed in a cylindrical shape. 1 (a) of FIG. 1 formed on the curved body is obtained by FIG. 3 (a). 3 (a) is obtained by bonding the end portion 3 (a1) on the right side of the front surface and the upper portion 3 (a2) on the left side corresponding to the back surface in a twisted manner. b) The cylindrical shape can be obtained by bonding the right end portion 3 (b1) on the front surface and the left end portion 3 ( b2 ) corresponding to the back surface in a bending manner. Since a sheet-like sound generator cannot obtain a loud volume or low sound with only a curved surface due to its own weight, the volume can be obtained by the stress (internal loss) inside the curved body that is forcibly bent, and both ends must be bonded together. As a result, rigidity is generated, and tension is generated in the fiber structure by the rigidity to generate bass and radiate a bass range. The sound generator 3 (a) obtains a volume including a low sound, the sound generator 3 (b) obtains a high sound, and the sound generator 3 (c) obtains a soft medium sound.

  The material of the sound generator 3 is preferably a material having excellent vibration transmission and having a large internal loss, as well as conditions suitable for forming the curved surface. In order for the transmitted vibration to be generated as sound, the size of the internal loss is an important factor, and examples of materials having a fiber structure include sliced fiber skins, leaves, and woody parts of plants It may be a sheet-like thin plate, paper, or paper or wood laminated with plastic or metal thin, or a thin plate reinforced with a woven fabric, carbon fiber or glass fiber. Preferably, a natural plant fiber produced by the vitality of a plant is preferable, and more preferably, a sheet-like wood in which a thin plate (sapwood) obtained by slicing a solid wood is reinforced with Japanese paper. In this case, vibrations transmitted by appropriate internal loss and bending are efficiently generated and radiated to the sound, but are not restricted by these. Also, by strengthening with Japanese paper, the sound generator will not be broken or cracked by momentary strong vibration or continuous excitation, and there is no effect of sound attenuation and clear sound can be obtained It is.

  The driving method of the actuator 40 for converting the electrical signal as the vibration generating means 4 into physical vibration is appropriately selected. The actuator used in the present invention is a perspective view of FIGS. 4 (a) and 4 (b), FIG. As shown in the sectional views of the vibration generating means 4 in (a) and (b), the amplifying means 42 is provided in the driving means 41 corresponding to the actuator drive section, and the fixing means 43 is provided in the vicinity of the center position of the driving means 41, A coupling hole 44 is provided in the vicinity of the central axis of the driving means 41 of the fixing means 43. In Patent Document 1, the sound source has a support portion (formed integrally with the voice coil) that supports the voice coil in a suspended state, with one end attached to the lid of the storage case (housing), and the tip of the rod-shaped member is the support portion. The lid that fixes the support that supports the voice coil in a suspended state is said to be equivalent to a diaphragm, and is made of a hard material such as plastic. Used. Vibration generated in the voice coil is not amplified, and vibration is generated in the sound by a support material that supports the voice coil in a suspended state and a hard material (plastic) that also serves as a diaphragm for fixing the support. It is considered that the structure has a structure in which the transmission loss of vibration has to be large in the vicinity. Therefore, only weak vibration is transmitted to the blade member provided at the rod-shaped tip, and there is a problem that the sound range is narrow, for example, there is no low or high sound. In the present invention, the drive unit (voice coil) of the actuator is fixed so as not to drop off, the amplifying unit 42 is provided via the driving unit 41, the fixing unit 43 is provided near the center position of the driving unit 41, and the fixing unit A coupling hole 44 is provided in the vicinity of the central axis of the driving means 41 of 43, and the amplified vibration is transmitted to the vibration transmitting means 2 without any transmission loss. That is, a coupling hole 44 is provided in the vicinity of the vicinity of the actuator drive shaft center line 45 so that the center axis of the vibration transmission means 2 matches the center axis of the actuator drive by contacting the vibration transmission means 2. In this structure, the amplified vibration is transmitted to the end of the vibration transmitting means 2, and the vibration generated by the vibration generating means 4 is coaxial with the end of the vibration transmitting means 2 by the fixing means 43. Therefore, the vibration generated by the vibration generating means 4 is amplified and transmitted to the vibration transmitting means 2 as a strong vibration, and the sound range is wide and large due to an appropriate internal loss of a member formed of a material having a fiber structure as appropriate. Sound is generated.

  The amplifying means 42 is capable of amplifying momentary strong vibration and continuous weak vibration generated by the actuator because the end is free as shown in FIG. 4 (a). When an amplifying plate with a fixed part is used, contradiction arises when trying to amplify strong and weak vibrations repeatedly. Amplification of momentary strong vibration is accompanied by a reaction, and there is a case where attenuation is caused by the provision of an amplification plate with both ends fixed, and continuous weak vibration is difficult to obtain the effect. When trying to match the continuous weak vibrations, vibration cracks (chatters) occur with strong vibrations. Amplifying means 42 having an end portion free of the driving means 41 or an appropriate shape close to free FIG. 4B (for example, three or four points on the concentric circle of the central axis of the driving means 41) Both the strong vibration and the weak vibration can be amplified by providing a form that is connected in a state where the width of the degree is narrow, so that even if an instantaneous strong vibration is amplified, vibration cracking (battery) does not occur It can be amplified. Therefore, as shown in the perspective views of FIGS. 4 (a) and 4 (b) and the cross-sectional view of the vibration generating means 4 in FIGS. 5 (a) and 5 (b), the end of the drive means 41 corresponding to the drive section of the actuator is free. Alternatively, amplifying means 42 (for example, a form in which the widths of three or four points on the concentric circle of the central axis of the driving means 41 are connected in a narrow state) formed in an appropriate form close to free are provided and driven. Even if the fixing means 43 is provided in the vicinity of the center position of the means 41 and the coupling hole 44 is provided in the vicinity of the central axis of the driving means 41 of the fixing means 43 to amplify the vibration, vibration is not caused and the vibration is amplified. It is done.

The material of the fixing means 43 provided in the amplifying means 42 is appropriately selected. For example, the fixing means 43 may be made of metal, plastic, wood material, or solid wood, but is preferably formed of a solid wood air-drying material. In this case, when the coupling means 20 formed at the end of the vibration transmitting means 2 is brought into contact with the coupling hole 44 of the fixing means 43, the abutted portion is tightened due to internal stress due to compression of the wood, that is, the repulsive force. In this state, the amplifying means 42, the driving means 41, and the actuator 40 are integrated via the fixing means 43, and the vibration generated by the vibration device is easily transmitted to the end of the vibration transmitting means 2 efficiently. In this case, the coupling hole 44 needs to be provided in the vicinity of the center line 45 of the drive shaft of the actuator. However, the vicinity means that the center line 45 is included in the size range of the coupling hole. That is, if the coupling hole is a circle with a diameter of 3 mm, it is within a range of 3 mm, and if the coupling hole is a circle with a diameter of 9 mm, it is within a range of 9 mm. Although accuracy is required, the dimensions of the coupling hole are not constrained by these descriptions.

The coupling means 20 formed at the end of the vibration transmitting means 2 is appropriately formed depending on the material of the fixing means 43. When the material of the fixing means 43 is metal, plastic, or solid wood, the coupling means 20 is preferably formed of the same material as that of the vibration transmission means 2, but even wood material may be plywood or wood fiber board. In the case of the fixing means 43 formed, both screw screws are attached to the end of the vibration transmitting means 2 and screwed into the coupling hole 44 of the fixing means 43 so as to be tightly connected, so that the fixing means 43 and the end of the vibration transmitting means 2 are in close contact with each other. A method of making it possible is conceivable. By this method, the vibration transmission means 2 is fastened to the fixing means 43.

  FIG. 6 is a perspective view according to the second embodiment of the present invention. This is an example in which three sound generators 3 (a) and 3 (c) 1 provided at the end of individually formed vibration transmitting means 2 are bundled together and coupled to the vibration generating means 4. . In this case, a soft sound, a large bass sound and a volume can be obtained, and the directionality of the sound can be widely obtained. The vibration transmission means 2 is not formed of only one material, but may be a case where a plurality of thin vibration transmission means 2 are gathered together and tightened, and is stronger like a braid. The vibration transmission means 2 is configured, and the cross section of the vibration transmission means 2 is formed in an appropriate shape for efficiently transmitting vibration.

FIG. 7 is a perspective view according to Embodiment 3 of the present invention. The configuration is the same as in the second embodiment. Three sound generators 3 (a) and 3 (c) 1 provided at the end of the vibration transmitting means 2 are bundled together and joined together as one to the vibration generating means, and pressed by a pedestal speaker body This is an example in which the stability of is improved. In this case, a soft sound, a large bass sound and a volume can be obtained, and at the same time, vibrations are transmitted to the pedestal 5 to generate a sound, so that a solid bass sound can be obtained and the directionality of the sound can be widely obtained. Further, when the speaker of the present invention is compared to an ikebana, the sound generator 3 may be neatly arranged like a single flower to generate a refreshing sound.

FIG. 8 is a perspective view according to Embodiment 4 of the present invention. The sound generator 3 (a) is installed at a thin and long tip like a tall sunflower, and it can deliver sound to a remote location without a sound source or power source. Sound can be distributed selectively in a spot manner. The vibration transmitting means 2 can be made long as long as it is bent and bent by its own weight and does not break. For example, sound can be distributed to a place 4 meters away or to the center of a circle where many people gather. Further, the sound generator 3 (a) can be removed and brought into contact with another sound generator at a location away from the tip portion to generate and radiate sound. For example, even if it is a ceiling part, a wall part, a floor part, furniture or furniture, sound is generated and radiated.

FIG. 9 is an explanatory diagram according to the fifth embodiment of the present invention. The speaker 1 according to the present invention can be used as the speaker 1 by connecting to an output device 10 such as a personal computer or an amplifier of an audio device, a television set, a portable player, a mobile phone or the like through a connection line 11.

  FIG. 10 is an explanatory diagram according to the sixth embodiment of the present invention. The speaker 1 according to the present invention can be used as the speaker 1 by the wireless run 13 by incorporating a battery or an amplifier in the vibration generating means 4. Since various music distribution via the Internet is received via the portable wireless device 12 (cell phone, smart phone, etc.), it is generated and radiated as sound, so it can be used even in places without electrical equipment or acoustic equipment. . In this case, the vibration generating means 4 can also be obtained by a commercially available vibration speaker. For example, BT-SP100V manufactured by JENESIS HOLDINGS Co., Ltd. and UMA-BVS01 manufactured by Hanwha Q CELLS Japan Co., Ltd. are exemplified. It doesn't matter if it exists.

DESCRIPTION OF SYMBOLS 1 Speaker 2 Vibration transmission means 3 Sound generator 4 Vibration generation means

Claims (3)

A speaker device in which vibration generating means is provided at an end of the vibration transmitting means, and vibration generated by the vibration generating means is transmitted to the sound generating body by the vibration transmitting means and radiated from the sound generating body as sound, The vibration transmitting means can be provided with a plurality of the sound generators at appropriate positions, and is formed by a rod-like body having a fiber structure for transmitting vibrations, and the sound generator is formed in a curved surface. A speaker device provided with at least one of the sound generators , wherein an amplifying means having a free end is provided at a tip of a driving means provided in the vibration generating means, and the amplifying fixed means provided on the unit, this said the fixing means are coupling means for coupling said vibration transmitting means to said vibration generating means in the vicinity of the center axis near the vibration is provided The speaker apparatus according to claim.   2. The speaker device according to claim 1, wherein the vibration transmitting means is formed of an air-drying material of a plant stem, leaf, branch, epidermis, or wood part, and a groove for detachably attaching the sound generator is formed.   The speaker device according to claim 1, wherein the sound generator has a fiber structure.