JP2011097484A - Rotary speaker apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light-weight and high sound quality portable rotary speaker apparatus which rotates a rotaty horn at a speed by converting a strength of reproduction sound into a horn rotation speed, in addition to at slow and fast speeds. <P>SOLUTION: In the rotary speaker apparatus, a compression driver 25b provided with a weight extending from the back is installed upward in an upper end of a tubular housing 1, a cylindrical fixed shaft 3a is installed above it, further, and a curved horn 5b extending from a vertical cylindrical rotary shaft 27 is put thereon. A motor is driven and the horn 5b is rotated through a pulley and a belt. Thus, a sound source emitted from the compression driver 25b is discharged and diffused while being rotated from the inside of the cylindrical fixed shaft 3a through the horn 5b. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a technology of a rotary speaker device in which a sound source is changed.

Prior art rotary speaker devices were not designed to faithfully reproduce sound, but as a device that changes sound.
A conventional rotary speaker device will be described below with reference to the drawings. The conventional rotary speaker device has an appearance as shown in FIG. 19, and the inside of the device is divided into three spaces as shown in FIG. A curved horn 5b is stored in the upper space, and a compression driver 25b, a bass speaker 25c, and a passive crossover 16 are stored in the middle space. The intermediate space serves as a bass reflex housing for bass speakers. In the lower space, the bus rotor 31 and the amplification amplifier 18 are stored.

  The sound outlets 28 in the four directions around the casing of the rotary speaker device according to the prior art are designed such that the upper outlet emits high sounds and the lower outlet emits low sounds. In addition, a portion on the back side of the housing is wide open, and the structure is good for sound passage.

  The compression driver 25b divided into frequencies above 800 Hz by the passive crossover 16 is installed with the entire surface facing upward from the lower side of the partition plate 41. A vertical cylindrical fixed shaft 3a is arranged and connected to the upper side of the compression driver 25b. The vertical cylindrical fixed shaft 3a serves as a thrust bearing, and is connected to a cylindrical rotation shaft of a vertical portion of a horn 5b formed by bending a black bakelite formed into a pair of bells in the upper space. A pulley 8a is fixed to the cylindrical rotation shaft of the vertical portion of the curved horn 5b, and the pulley 8a is rotated from the motor 4 via the pulley 8b and the belt 20, and the curved horn 5b is moved in one minute. It can be rotated at about 400 and about 40 revolutions. The rotary speaker device of the prior art radiates and diffuses as a directional sound from the sound outlets 28 in the four directions around the casing by the rotation of the horn 5b formed by bending.

  Further, the bass speaker 25c divided by the passive crossover 16 from 800 hertz to a lower frequency is also installed on the partition plate 41 with the entire surface facing downward. From the motor 4 via the pulley 8b and the belt 20, a sound is generated from the bus rotor 31 at the two rotation speeds, that is, about 400 rotations and about 40 rotations per minute in the opposite direction to the horn 5b. Radiation diffusion.

  Here, the compression driver 25b is a tweeter speaker that produces a high sound range. The motor 4 is an AC brushless motor.

  The passive crossover 16 is a filter that divides a frequency band of a plurality of speakers in accordance with a reproduction band, such as a tweeter speaker that handles a high frequency range or a woofer speaker that handles a low frequency range. By using it, a wide frequency band can be reproduced.

As described above, in the conventional rotary speaker device, the speaker housing has a box shape because of the structure shown in FIG. When the compression driver 25b and the bass speaker 25c emit sound in the speaker housing 42, only one of the magnets etc. that vibrate the diaphragm of the speaker of the magnetic circuit part is supported by the frame, and is connected to the diaphragm in a suspended state. Vibrates due to the reaction of the coil.
This vibration is transmitted from the partition plate 41 to the speaker housing 42 to produce a box sound. The vibration is transmitted again from the speaker housing 42 to the partition plate 41, the compression driver 25b, and the bass speaker 25c main body, and returns to the base. Compared with the element waveform sound wave constituting the original waveform sound wave, unnecessary vibrations whose phase is disturbed due to a time difference are mixed together, which causes a deterioration in faithful reproducibility of the original waveform sound wave from the diaphragm of the speaker.
The problem that the above-described unnecessary vibrations whose phases are disturbed due to the time difference are mixed and the faithful reproducibility of the original waveform sound wave from the speaker diaphragm is deteriorated is a problem that appears more prominently as the volume increases.

  Further, as shown in FIG. 4, the original waveform sound wave radiated from the rear surface of the diaphragm of the bass speaker 25 c in the speaker housing 42 is reflected and collided with each wall surface inside the speaker housing 42 to reactance of acoustic impedance. As a result, the sound pressure radiated from the front of the low-frequency speaker 25c changes, and the reproduced sound quality radiated from the front of the speaker is mixed by mixing unnecessary frequencies with a phase difference due to the time difference compared to the original waveform sound wave. It was an obstructive factor.

JP 2001-224089 A

Suzuki musical instrument catalog 2002, Suzuki musical instrument factory

  As described above, in the rotary speaker device of the prior art, the vibration of the magnet portion of the speaker cannot be suppressed because it is fixed to the box-shaped speaker housing 42 only by the frame portion of the speaker. It was transmitted to the speaker housing via the speaker frame and induced a plate vibration called box sound. The vibration of the box sound is transmitted to the speaker unit again through the speaker frame, giving unnecessary vibration to the entire speaker unit. As a result, it is superimposed on the original waveform sound wave of the speaker diaphragm, The playback sound quality deteriorated.

  In the conventional rotary speaker device, the original waveform sound wave radiated from the rear surface of the diaphragm of the bass speaker 25c in the box-shaped speaker housing 42 is reflected and collided with each wall surface inside the housing 42. Ai, the reactance of the acoustic impedance is increased. As a result, the sound pressure radiated from the front of the bass speaker 25c changes, and an unnecessary frequency whose phase is disturbed due to a time difference compared with the original waveform sound wave is superimposed. This was a factor that hindered the reproduced sound quality emitted from the front of the speaker.

  The curved horn 5b in the conventional rotary speaker device rotates 360 degrees in the horizontal direction within the speaker housing to emit a sound source. However, in the box-shaped speaker housing 42 such as the conventional rotary speaker device, since there are sound outlets 28 in the four directions of the vertical side surface, when the back surface is installed facing the wall, the sound outlet is provided. 28 will block one direction. In this case, only the sound is emitted from the sound outlet 28 in the remaining three directions, and the functions of vibrato and tremolo amplitude modulation, Doppler effect frequency modulation and spatial modulation, and chorus effect sound are limited to only three directions. Problem arises.

  Furthermore, in the conventional rotary speaker device, the speaker housing is made of thick wood to suppress the vibration of the speaker unit, and large speakers, vacuum tube amplifiers, motors and other devices are installed inside the housing. Therefore, the total weight is about 70kg, the case itself is large, the installation area is large, the equipment is inconvenient to carry, and a lot of labor is required for frequent carry-in and movement to the performance venue. It was.

  Furthermore, some rotary speaker devices of the prior art have been commercialized with the high-frequency partial case and the low-frequency partial case separated, but there are about 20 kg for the high-frequency partial case and about 40 kg for the low-frequency partial case. When used together, the weight is about 60 kg, which makes it difficult for one person to move easily.

In view of the above situation, the present invention has less time-related disturbance such as superposition of unnecessary frequencies whose phase is disturbed due to a time difference compared to the original waveform sound wave, and faithfully reproduces the phase of the complex waveform of the low frequency of the sound source. An object of the present invention is to provide a rotary speaker device that can be reproduced and can emit the sound source horizontally in all directions of 360 degrees, and can reduce the weight of the device main body and is excellent in carrying convenience.
Another object of the present invention is to provide a rotary speaker device capable of improving the expressiveness of sound.

In order to achieve the above object, the present invention aims to solve the above-mentioned problems of the conventional rotary speaker device by the time domain theory, and faithfully reproduces the phase of the low-frequency complex waveform of the sound source. Sound is emitted from the rotary speaker device in all directions at 360 degrees in the horizontal direction.
Further, the expressive power of the sound is improved by controlling the rotation speed of the horn 5b formed with the curve in synchronism with the strength of the reproduction volume.

  Here, the time domain theory is considered in the time domain where the sound shape is reproduced correctly by faithfully reproducing the sound pressure waveform, and unnecessary vibrations of the speaker body that cause distortion of the sound. By suppressing internal reflection and reproducing the original waveform as it is, the time process from the generation to the disappearance of the sound is reproduced, and the sound as it was recorded is pursued to reproduce the original sound as much as possible. It is a theory to reproduce.

That is, the rotary speaker device according to the first aspect of the present invention includes a magnet, a frame, a diaphragm, and a weight extending from the back of the magnet, and electromechanically converts the low frequency signal in response to the low frequency signal. A speaker unit that vibrates the diaphragm and generates and emits sound waves from the front surface of the diaphragm;
An upright cylindrical housing, wherein the speaker unit is fixed to the upper surface opening of the cylindrical housing with the front surface of the diaphragm facing upward, and the speaker housing having a cylindrical bottom opening;
In a speaker device composed of
1) The upper and lower sides of the frame of the speaker unit are sandwiched by vibration-proofing materials, and are fixed to the portion that contacts the inner wall surface of the cylindrical housing.
2) A cylindrical fixed shaft whose axial direction is vertical is provided directly above the speaker unit.
3) a curved horn having a cylindrical rotation shaft that is pivotally attached to a cylindrical fixed shaft;
4) driving means for rotating the cylindrical rotation shaft;
It is set as the structure provided with.

According to such a configuration, using time domain theory, a sound that faithfully reproduces the phase of a low-frequency complex waveform of the sound source is reproduced in two directions at 360 degrees from the upper and lower portions of the rotary speaker device. Can be released horizontally.
Further, the weight of the apparatus main body can be reduced, and convenience such as carrying is improved.

A rotary speaker device according to a second aspect of the present invention extends from the back surface of the second magnet, the second frame, the second diaphragm, and the second magnet in the rotary speaker device according to the first aspect. A second speaker unit that includes a second weight, vibrates the second diaphragm by electromechanically converting the low frequency signal in response to the low frequency signal, and generates and radiates sound waves from the front surface of the second diaphragm. Further comprising
The second speaker unit has an inner wall surface of the cylindrical housing that sandwiches the top and bottom of the second frame with a vibration isolating material at the bottom opening of the speaker housing with the front surface of the second diaphragm facing downward. Let it stick to the abutting part,
It is a preferable aspect that a sound outlet hole is provided in the entire circumference of the side surface of the upper part or the central part of the cylindrical housing.

  According to such a configuration, sound that faithfully reproduces the phase of the complex waveform of the low frequency of the sound source is emitted in 360 ° in all directions from the upper, middle, and lower portions of the rotary speaker device. Can be made.

  A rotary speaker device according to a third aspect of the present invention is the rotary speaker device according to the first aspect or the second aspect, further provided with a music dimming control unit, wherein the signal current of the low frequency signal is dimmed. Music dimming control is performed in synchronization with the control unit in accordance with the strength of the low frequency signal, and the output voltage signal of the music dimming control unit is applied to the driving means, and the musical tone signal is applied. It is more desirable that the horn rotation speed can be controlled in a stepless and rapid manner in synchronization with the strength of the current.

  According to this configuration, it is possible to control the horn rotation speed steplessly in synchronism with the intensity of the signal current of the musical sound, and to improve the expressiveness of the sound.

  Here, the rotary speaker device according to the second aspect or the third aspect of the present invention is the second speaker provided on the outer periphery of the portion provided with the sound outlet hole in the entire circumference of the side surface of the upper part of the cylindrical housing or the central part. A cylindrical housing, a guide rail that supports the second cylindrical housing, and a second drive device that rotates the second cylindrical housing are further provided. A second outlet hole is provided, and the second cylinder is rotated by the second driving device along the guide rail, so that the sound is emitted from the sound outlet hole provided on the side surface of the cylindrical casing to the second cylinder. It is a more preferable aspect that the structure is configured to radiate and diffuse outward while rotating through the second outlet hole on the side surface of the shape housing.

  According to such a configuration, the sound source can be released in a horizontal direction in all directions of 360 degrees from the center of the rotary speaker device.

  The rotary speaker device according to the second or third aspect of the present invention is vertically attached to the lower side of the second speaker unit, fixed to a vertical shaft serving as a rotation axis, and an upper inner surface. A rotating drum having a curved slide shape that gradually becomes horizontal from the vertical to the opposite lower inner surface, and a third driving device that rotates the rotating drum, and the second speaker by rotating the rotating drum It is a more preferable aspect that the sound wave radiated downward from the unit radiates and diffuses outward while rotating through the slide base shape of the rotating drum.

  According to such a configuration, the sound source can be released in a horizontal direction in all directions of 360 degrees from the lower part of the rotary speaker device.

  Further, the rotary speaker device according to the second aspect or the third aspect of the present invention is configured to electronically generate sound waves emitted from the second speaker unit disposed on the lower surface of the opening of the cylindrical housing, vibrato effect, tremolo effect, Alternatively, it is a more preferable aspect that a simulation means for giving a chorus effect is further provided.

  According to such a configuration, it is possible to improve the expressiveness of sound with respect to sound waves emitted in the horizontal direction in all directions of 360 degrees from the lower part of the rotary speaker device.

Furthermore, in the above-described rotary speaker device of the present invention, it is a more preferable aspect to provide a spiral sound path inside the cylindrical housing.
According to such a configuration, since it is substantially equivalent to the lengthening of the cylindrical housing, it is possible to extend the low frequency sound without inflating. Thereby, the low frequency reproduction sound can be enriched even in the second speaker unit.

A rotary speaker device according to a fourth aspect of the present invention includes a magnet, a frame, a diaphragm, and a weight extending from the back of the magnet, and electromechanically converts the low frequency signal in response to the low frequency signal. A speaker unit that vibrates the diaphragm and generates and emits sound waves from the front surface of the diaphragm;
An upright box-type housing, wherein the speaker unit is fixed to the upper portion of the box-type housing with the front surface of the diaphragm facing upward;
In a speaker device composed of
1) The upper and lower sides of the frame of the speaker unit are sandwiched by vibration-proof materials and fixed to the portion of the box-type housing that comes into contact with the housing frame.
2) A cylindrical fixed shaft whose axial direction is vertical is provided directly above the speaker unit.
3) a curved horn having a cylindrical rotation shaft that is pivotally attached to a cylindrical fixed shaft;
4) driving means for rotating the cylindrical rotation shaft;
It is set as the structure provided with.

  According to such a configuration, it is possible to prevent the occurrence of plate vibrations, such as box sounds, existing in the conventional rotary speaker device, and to superimpose them on the original waveform sound waves of the speaker diaphragm, further degrading the reproduced sound quality of the speakers. Can be avoided.

A rotary speaker device according to a fifth aspect of the present invention is the rotary speaker device according to the first aspect, wherein the second magnet, the second frame, the second diaphragm, and the rear surface of the second magnet are extended. A second speaker unit that includes a second weight, vibrates the second diaphragm by electromechanically converting the low frequency signal in response to the low frequency signal, and generates and radiates sound waves from the front surface of the second diaphragm. Further comprising
The second speaker unit is placed on the lower part of the above-mentioned speaker casing with the front surface of the second diaphragm facing downward and the upper and lower sides of the second frame are sandwiched between vibration isolating materials and the casing frame of the box-type casing. Let it stick to the contact part,
It is a preferable aspect that a sound outlet hole is provided on the lower side surface of the box-shaped housing.

  According to such a configuration, it is possible to prevent the occurrence of plate vibrations, such as box sounds, existing in the conventional rotary speaker device, and to superimpose them on the original waveform sound waves of the speaker diaphragm, further degrading the reproduced sound quality of the speakers. Can be avoided.

  A rotary speaker device according to a sixth aspect of the present invention is the rotary speaker device according to the fourth aspect or the fifth aspect, further comprising a music dimming control unit, wherein the signal current of the low frequency signal is dimmed. The music dimming control is performed in synchronization with the low frequency signal according to the strength of the low frequency signal, and the output voltage signal of the music dimming control unit is applied to the driving means and the signal current of the musical sound is input. It is more desirable that the rotation speed of the horn can be controlled in a stepless and rapid manner in synchronism with the intensity.

  According to this configuration, it is possible to control the horn rotation speed steplessly in synchronism with the intensity of the signal current of the musical sound, and to improve the expressiveness of the sound.

Furthermore, in the rotary speaker device according to the third aspect or the sixth aspect of the present invention, at least one color light emitting diode is provided, and the light emitting diode emits light according to the output voltage signal of the music dimming control unit. This is a preferred embodiment.
According to such a configuration, it is possible to further improve the expressiveness of sound.

According to the rotary speaker device of the present invention, there is less time-related disturbance such as superposition of unnecessary frequencies whose phase is disturbed due to a time difference compared to the original waveform sound wave, and faithfully reproduces the phase of the complex waveform of the low frequency of the sound source. The sound source can be reproduced in all directions at 360 degrees, and the weight of the apparatus main body can be reduced and the convenience of carrying is excellent.
Moreover, according to the rotary speaker device of the present invention, there is an effect that the expressive power of sound can be improved.

The partially broken perspective view which shows the 1st Embodiment of this invention 1 is a longitudinal sectional view showing a first embodiment of the present invention. The upper part longitudinal cross-sectional view which shows the 1st Embodiment of this invention Vertical cross-sectional schematic diagram of a conventional rotary speaker device Upper partial sectional view showing a fourth modification of the first embodiment The partially broken perspective view of the cylindrical fixed shaft which shows 1st Embodiment The partially broken perspective view of the cylindrical fixed shaft which shows 1st Embodiment Curved horn longitudinal sectional view showing the first embodiment The lower part longitudinal cross-sectional view of the cylindrical housing | casing which shows the 1st modification of 1st Embodiment. Partially broken longitudinal sectional view of a cylindrical body showing a fifth modification of the first embodiment The perspective view of the cylindrical body which shows the 5th modification of 1st Embodiment. Bus rotor perspective view showing the first embodiment Bus rotor longitudinal sectional view showing the first embodiment Bus rotor perspective view showing the first embodiment The partially broken perspective view of the joint with a different diameter which shows the 2nd modification of 1st Embodiment Longitudinal sectional view of a bifurcated joint showing a third modification of the first embodiment Block diagram of music dimming control (1) Illustration of the lighting effects of the music dimmer circuit External view of conventional rotary speaker device Music dimming control block diagram (2)

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The scope of the present invention is not limited to the following examples and illustrated examples, and many changes and modifications can be made.
In the following description, the speaker mounting side is referred to as the front side of the speaker, and the rear magnet side is referred to as the back side of the speaker. In the drawings, the same components are denoted by the same reference numerals.

  First, the rotary speaker device of the present invention will be described with reference to FIGS. 1 to 3 respectively show a partially broken perspective view, a longitudinal sectional view, and an upper partial longitudinal sectional view showing the first embodiment.

  The rotary speaker device of the present invention includes a magnet, a frame, and a diaphragm, and generates a sound wave from the front surface by vibrating the diaphragm by electromechanical conversion of the low frequency signal in response to the low frequency signal. A speaker unit (see FIGS. 2 and 3) composed of a radiating compression driver 25b and a weight 26 extending from the magnet back surface of the compression driver 25b is provided on the upper end surface of the opening of the cylindrical housing 1 upright. Inside the speaker stopper 19 (see FIG. 3), a gelling material as a vibration isolator 13a is sandwiched between the compression driver 25b frame and fixed to the speaker support base 15 with the front surface of the compression driver 25b facing upward. It is a thing.

  In the rotary speaker device of the present invention, a cylindrical fixed shaft 3a having a vertical axial direction is provided directly above the speaker unit, and extends from a cylindrical rotary shaft 27 that is pivotally attached to the cylindrical fixed shaft. The horn 5b is provided.

  In the rotary speaker device of the present invention, the cylindrical rotating shaft 27 of the horn 5b formed by bending is connected to the upper side of the vertical portion of the cylindrical fixed shaft 3a provided immediately above the speaker unit as a thrust bearing, and this is connected to the motor 4 By rotating the pulley 8a installed on the cylindrical rotating shaft 27 of the rotary horn from the pulley 8b via the belt 20, the sound source emitted from the compression driver 25b was bent from within the cylindrical rotating shaft 27 from within the cylindrical fixed shaft 3a. It passes through the inside of the horn 5b and radiates and diffuses while rotating as a directional sound 46.

  Here, as shown in FIG. 8, the bent horn 5b is such that only one bent horn 5b passes through the sound (see the arrow 46 in FIG. 8), and the other horn-shaped horn 5b. Is a dummy for balancing the rotation and acts as a weight. Thereby, the same air resistance can be produced symmetrically at the time of high rotation.

  In the rotary speaker device of the present invention, the other bottom surface of the cylindrical housing 1 is protected against the inside of the speaker fixing lid 43 on the lower end surface of the opening of the cylindrical housing 1 as shown in FIGS. The vibration member 13a is arranged in accordance with the speaker frame 62, and the front surface of the small-diameter bass speaker 9 provided with the weight 26 extending from the magnet back surface of the speaker unit is placed downward, and the vibration damping material 13a is again mounted thereon. The speaker support base 15 is further placed on the speaker frame 62 and fixed to the inside of the speaker fixing lid 43, and this is inserted and fixed to the lower end surface of the cylindrical housing 1.

  As shown in FIGS. 1 and 2, a sound outlet 28 is provided on the upper side surface of the cylindrical housing 1, and from the back of the small bass speaker 9 attached to the lower portion of the cylindrical housing 1. The radiating sound wave is diffused and emitted in 360 degrees in all directions and in the horizontal direction by the diffusion cone cone 6 disposed inside the cylindrical housing at the sound exit 28 portion.

In addition, the rotary speaker device of the present invention electronically processes sound waves emitted from the small-diameter bass speaker 9 with the front face facing downward at the lower end surface of the opening of the cylindrical housing 1 into vibrato, tremolo, and chorus effects. A rotary simulator (not shown) is provided and connected to the outside separately from the cylindrical housing 1 by wiring. As the rotary simulator, for example, a computer terminal such as a personal computer is used.
By separating the rotary simulator from the cylindrical housing 1 and connecting it with wiring, the weight of the cylindrical housing 1 itself can be reduced.

  Further, the rotary speaker device of the present invention is provided with a rotating drum 36 as shown in FIGS. 12 to 14 on the lower side of the speaker unit 9 in which the front surface is disposed downward on the lower end surface of the opening of the cylindrical housing 1. The rotating drum 36 is fixed to a shaft 39 perpendicular to the center except for a part of the upper surface in the bus rotor frame 44. A pulley 38 is provided at the upper end of the shaft of the rotary drum 36. The rotary drum 36 is connected to the speaker fixing lid 43 (see FIG. 9) with a gap using a connection plate 45 in the vertical direction.

The rotary drum 36 has a curved slide shape that gradually becomes horizontal from the vertical from the upper inner surface to the opposed lower inner surface. The pulley 38 at the upper end of the shaft of the rotating drum 36 is disposed on the lower surface of the opening of the cylindrical housing 1 by rotating the pulley 56 rotated by the motor 54 disposed on the motor mounting stay 55 via the belt 57. The sound source emitted from the lower direction of the small-diameter bass speaker 9 is radiated and diffused outside (see the arrow 49 in FIG. 2) while rotating through the curved slide base shape in the rotary drum 36.
A sound source emitted from the lower side of the small-diameter bass speaker 9 on the lower surface of the opening of the cylindrical housing 1 is radiated and diffused outward while rotating through the curved slide base shape in the rotary drum 36, so that a medium / low-pitched sound is reproduced. Can be given swells such as vibrato, tremolo, and chorus.
The rotation speed is the same as that of the curved horn 5b, but the rotation direction is opposite.

In addition, as shown in FIG. 9, the rotary speaker device of the present invention is provided with a spiral sound path 32 in a cylindrical casing 1, and the cylindrical casing 1 is substantially elongated. Since it becomes equivalent, it becomes possible to extend the low frequency sound without expanding it. Thereby, even the small bass speaker 9 can enrich the low frequency reproduction sound.
In addition, since the cylindrical housing 1 is substantially lengthened, the piston moves together with the diaphragm in the low frequency range, so that the air mass is added to the vibration system weight, and f0 The lowest sound is lower than the characteristic value of the speaker unit.
Furthermore, coupled with the fact that braking is applied to the flow of air flowing through the inside of the cylindrical housing 1, it has a better bass range expressive power.

  Further, the rotary speaker device of the present invention is provided with a rotation speed other than the existing slow and fast as the third rotation speed, and is continuously synchronized with the intensity of the music signal current derived from the input signal terminal of the speaker unit. Musical dimming control is performed, and the voltage signal subjected to the dimming control is applied to the motor, so that the rotational speed of the folded horn 5b is controlled continuously and steplessly in synchronization with the volume.

Here, music dimming control is to control power dimming in synchronization with the volume level when a playback sound is input to the music dimmer. It is a control method that realizes the same function as a dimmer that adjusts the blinking and brightness of stage lights in synchronization with the intensity of the sound.
In the present invention, a PWM (Pulse Width Modulation) control method is adopted as one method of the music dimming control, and the horn 5b is driven to rotate by applying a continuously controlled voltage to the motor. A brushless DC motor is used to prevent noise from entering the speakers. The third rotation speed can be selected with a changeover switch. In addition, the number of rotations for other FAST and SLOW times is determined in advance by PWM control.

  The third rotation speed of the above-mentioned music dimming control is to change the rotation speed of the curved horn 5b steplessly and rapidly by following the intensity of the noise by the foot volume operation. However, at the time of FAST and SLOW rotations, the number of rotations of the folded horn does not increase or decrease even if the sound volume is changed by the foot volume operation.

  In the PWM control, the cycle is constant and the motor is controlled by changing the ratio of H and L of the pulse width according to the magnitude of the DC level input signal. In the case of PWM control, the control is in the saturation region as compared with the conventional control. Another control method is phase control, which is controlled by changing the energization angle of the power supplied to the load.

  On the other hand, the phase control has characteristics that the output can be continuously varied over a wide range, the power loss in the control circuit is small, and the control circuit is small and inexpensive. Phase control is often used to control lighting and heaters. Another control method is inverter control, which controls the speed of an AC motor by a variable voltage, variable frequency AC power source.

  That is, as shown in FIG. 17, music dimming control is continuously performed by the PWM control method in synchronization with the volume of the music signal current derived from the speaker unit terminal, and the brushless DC motor is driven by the power, By adjusting the number of rotations of the horn 5b to the intensity of the music volume and controlling it steplessly and rapidly as shown in FIG. 18, for example, if the electronic organ produces a loud sound, the rotation will be faster, and if it produces a weak sound, it will rotate. The rotation speed of the horn 5b can follow the strong and weak sounds of stepping on the volume pedal in a stepless manner according to the volume, for example, the rotation stops if there is no sound.

  By providing the configuration as described above, the rotary speaker device of the present invention is emitted from the sound outlet 28 in the direction (arrow 46) emitted from the curved horn 5b as shown in FIG. The reproduction sound having directivity in the horizontal direction can be emitted and diffused at 360 degrees from a total of three directions (arrow 47) and directions (arrow 48) emitted from the small bass speaker 9.

According to the rotary speaker device of the present invention, the reactance of the acoustic impedance on the back surface of the speaker unit is reduced by the weight fixed to the back surface of the speaker magnet in the cylindrical speaker housing, so that a substantially pure resistance load can be obtained. As shown in FIG. 2, the bent waveform horn outlet 46 and the middle portion 47 and the lower portion 48 of the cylindrical housing 1 can be used. From a total of three locations, it is possible to emit and diffuse a high-quality directional reproduction sound with little disturbance of time-related waveforms in the horizontal direction at 360 degrees.
That is, the rotary speaker device of the present invention can view the reproduced sound in a wider area.

In the rotary speaker device of the present invention, the frame diameter of the speaker unit and the cylindrical diameter of the cylindrical speaker housing are formed to be substantially equal.
Therefore, by using the speaker box as a tube tube speaker housing, the sound waves and vibrations radiated from the back of the speaker unit are substantially absorbed and limited, and only to the plane sound waves transmitted in the longitudinal direction of the speaker housing. Thus, since this sound wave does not generate a complex standing wave that occurs in a conventional box-type speaker box, a complex low-frequency waveform such as a musical sound can be reproduced faithfully.

  The rotary speaker device according to the present invention further includes an anti-vibration material that is inserted between the speaker unit and the cylindrical speaker casing and attenuates and suppresses vibration transmitted from the speaker unit to the cylindrical speaker casing. Thus, the speaker unit is flexibly supported, and unnecessary vibrations of the speaker unit are prevented from being transmitted to the cylindrical speaker casing.

  In addition, by providing a vibration damping member that suppresses vibration in the material of the speaker support base that fixes the vibration, vibration transmitted from the speaker frame to the cylindrical speaker housing is transmitted by the gelled material and the vibration damping member. Since it suppresses and decreases and also suppresses vibrations transmitted to the speaker housing and returning again, it is possible to faithfully reproduce complex low-frequency waveforms such as musical sounds.

In the rotary speaker device of the present invention, the cylindrical housing 1 has a cylindrical shape or an elliptical cylindrical shape. Compared with sound waves radiated from a general box-shaped speaker casing, simplification of the vibration mode mainly by reflection of longitudinal vibration waves on the surface of the cylindrical speaker casing can be realized.
In addition, noise waves emitted from the surface of the speaker housing due to simplification of vibration modes can greatly reduce the amount of radiation compared to sound waves emitted from a general box-shaped speaker housing. It is also possible to suppress higher-order components of the radiated sound wave, and to suppress the deterioration of the quality of the reproduced sound. This makes it possible to faithfully reproduce low-frequency complex waveforms such as musical sounds.

In the rotary speaker device of the present invention, the tube-shaped housing 1 of the rotary speaker device has no inherent reverberation, and a focused sound can be reproduced. As shown in FIG. 2, the upper portion 46, the middle portion 47, and the lower portion 48 of the tubular housing 1. A space where you can hear a minute sound that you could not hear even if you turned the volume down 360 degrees from anywhere, the sound is clear, the speed of rising and falling sound, and the position of each recorded instrument Because of its excellent reproducibility, the service area that reproduces the sound field space is wide, and a satisfactory effect can be achieved in halls and lobbies where many people can listen simultaneously.
Further, the curved horn 5a in FIG. 5 and the rotation 5b in FIG. 2 are stopped, and an acoustic instrument that does not amplify sound electrically or a human voice is input from the microphone to the rotary speaker of the present invention. Can be amplified and expanded and transmitted to the audience.

  In addition, in the rotary speaker device of the present invention, in addition to the usage as a device for changing a sound source such as a musical instrument by rotating a curved horn, as described above, the phase of a complex waveform of low-frequency sound is faithfully reproduced. Sound image clarity is excellent for reproduction. Thus, the two upper and lower speakers in one rotary speaker can be used as a stereo apparatus, and the two monaural rotary speakers can be used as an audio reproducing apparatus as a left and right stereo.

  The cylindrical case 1 of the rotary speaker device of the present invention is light in weight because it is hollow, and the device including the amplifier, the music dimming controller and the rotary simulator is separated from the cylindrical case 1 with a wiring cord. By connecting, the weight of the main body is also kept at about 12 kg, which can be reduced by about 1/5 compared with the weight of the conventional rotary speaker device (about 60 to 70 kg). As a result, the conventional rotary speaker device can be easily moved and installed even in places where installation is difficult.

  As described in detail above, the reproduced sound of the rotary speaker device of the present invention has less time-related disturbance compared to the reproduced sound of the conventional rotary speaker device, and faithfully reproduces complex waveforms of low frequencies such as musical sounds. The sound image can be reproduced clearly even if it is heard from a distance. For this reason, the following three effects occur when a certain distance is provided from the listening point to the rotary speaker device of the present invention.

  First, when a sound source with directionality (see arrow 46 shown in FIGS. 2, 5, and 8) rotates at a variable speed around the cylindrical fixed shaft 3, Strength is maximized. The intensity of the sound increases toward the center of the fold-shaped horn and decreases with increasing distance from the center. The resulting effect is amplitude modulation. This is vibrato or tremolo, and the amplitude modulation effect increases in inverse proportion to the square.

  Secondly, in the case of a horn with a curved shape, frequency modulation is caused. As the sound source rotates toward the listener, its relative speed increases the pitch of the sound being played. The pitch drops as you move away from the listener. This is the same as the Doppler effect, where the sound increases when the ambulance siren approaches and decreases when moving away.

  As a third effect, when the playback sound of a horn that has been molded is rotating and listening in a room with an appropriate response, the sound is radiated all around and hits a number of reflective surfaces. It is a perfect spatial modulation, and the effect is felt that the sound is heard from various directions.

Further, in the conventional rotary speaker device, the rotation of the curved horn is manually switched with the SLOW, STOP, and FAST switches during the organ performance. On the other hand, in the rotary speaker device of the present invention, in addition to this, as the third rotation number, the strength of the reproduced sound by the volume pedal operation at the time of playing the music is converted to the horn rotation number, The STOP state is switched from SLOW to FAST steplessly in synchronization with the increase or decrease in volume, and the vibrato, tremolo and chorus sound effects can be changed. For this reason, in the rotary horn device of the present invention, the third rotation number in which the intensity of the musical instrument reproduction sound and the rotation speed of the horn are linked, and the SLOW and FAST in which the intensity of the musical instrument reproduction sound and the rotation speed of the horn are not synchronized are recorded. Can be used properly during performance.
In the conventional rotary speaker device, the above SLOW rotation is called CHORALE, and the FAST rotation is called TREMOLO.

When playing music that includes 1 / F fluctuation elements using this third number of rotations, the horn follows the relaxation effect of 1 / F fluctuations inherent to the music and the sound intensity. The expressiveness of music is further improved by superimposing changes in sound caused by slow and rapid rotation.
This can provide healing music that gives deeper excitement to those who are listening.

  Here, 1 / F fluctuation is a state where the sound is in harmony between the regular sound and the non-regular sound, and in the music, it is Abe Maria, Mozart's magic flute, singing voice of singer, etc. Listening to those songs will help you relax comfortably. In nature, it appears in all physical phenomena, biological phenomena, economic phenomena such as human heartbeat interval, star blink, candle flame shaking, creek stream, alpha wave, eye movement, sunbeams.

Also, as a playback method, there is a volume that can be variably adjusted in the voltage range of the power manually after applying the PWM control with the music dimming control device and selecting the third rotation speed before applying the power to the motor As a result, if the variably adjusted voltage can be applied to the DC motor, the following effects are produced.
When playing a music source featuring a single instrument or a sound source such as a CD, the voltage applied to the motor is set so that the vibrato of the playback sound obtained by rotating the rotary horn matches the desired cycle after the playback volume is determined by the amplifier. By turning down and finely adjusting the rotation, the vibrato sound emitted from the above-mentioned musical instrument starts to reproduce a gentle spatial modulation according to the flow of the strong and weak sound of the music, and the sound spread is obtained.

  Compared to when the same sound source is played with the rotary horn stopped, for example, the impression of a flat vibrato sound as a realistic three-dimensional vibrato sound is played, and the time domain sound source is reproduced faithfully. The vibrato sound of the featured instrument changes comfortably and spreads into the sound field space based on the air fluctuations caused by the gentle rotation of the rotary horn at a third rotation speed from the speaker to 360 degrees to the surroundings. The effect of being able to provide listeners with a new and relaxing style of listening to music that could not be realized with the rotary speakers of the world.

  When the above reproduction method is carried out, the horn directivity is considerably narrowed by replacing the curved horn 5b with the diffusion cone cone 6 as shown in FIG. 8 removed, and vibrato and tremolo effects with strong amplitude modulation are reduced. Therefore, the vibrato sound of the featured musical instrument is more prominently reproduced in the sound field space.

The volume to adjust the voltage range of power manually is to adjust the DC power after PWM control from 12V to 26V and apply it to the motor. Sometimes, the rotation speed of the rotary horn increases in the range from 0 rotation to the upper limit maximum rotation, and as the rotation speed decreases from 26V, the rotation speed from 0 rotation to the upper rotation speed becomes narrower.
Therefore, this volume is used when changing the voltage range to make the horn slow or loose within an arbitrary rotation range.

  Here, the types of the rotation speed of the horn of the rotary speaker device of the present invention are arranged. The number of rotations of the horn includes SLOW and FAST in which the rotation does not change even if the volume is changed during music playback, the third rotation speed in which the rotation follows the volume when the volume is changed during music playback, By changing the positive voltage range to the number of revolutions, there are a total of four types of extremely low speeds of vibrato playback.

Embodiments according to the present invention will be described below with reference to the accompanying drawings.
In the first embodiment, the compression driver 25b is used. 1 and 2 are a perspective view and a longitudinal sectional view showing the configuration of the rotary speaker of the first embodiment, FIG. 3 is a longitudinal sectional view near the compression driver 25b on the upper side of the housing, and FIG. 7 is a perspective view of the cylindrical fixed shaft 3a. It is a perspective view.

  1, 2 and 3, a speaker support 15 is disposed inside a speaker stopper 19 at the top of the cylindrical housing 1, a gelling material of a vibration isolator 13 a is disposed thereon, and a speaker is disposed thereon. A frame mounting surface of a compression driver 25b having a weight 26 disposed on the rear portion is placed, and a vibration isolating material 13a gelled material is disposed thereon to flexibly support the speaker unit.

Further, a cylindrical fixing shaft 3a shown in FIG. 7 is overlaid thereon, and a rotary horn cover 10 is overlaid from above and fixed with a rotary horn cover stopper 14.
In the vertical portion of the cylindrical fixed shaft 3a shown in FIG. 7, a felt material 2 as a cushion and a washer 30 made of Teflon (registered trademark) are disposed for the purpose of reducing the friction of the portion, as shown in FIG. In this manner, the cylindrical rotating shaft 27 in the vertical portion of the horn 5b formed by bending is overlapped as a role of the thrust bearing. As a result, the horn 5b formed by bending can be rotated lightly, and the pulley 8a disposed on the cylindrical rotating shaft 27 can be rotated from the pulley 8b of the motor 4 via the belt 20.

  The back side of the casing of the compression driver 25b is covered, and no vibration wave is emitted from the back side of the diaphragm. For this reason, the vibration wave from the diaphragm radiated from the back surface of the small bass speaker 9 disposed on the lower end surface of the cylindrical casing 1 is met in the cylindrical casing 1 and does not interfere. Therefore, only one diffusion cone cone 6 is disposed downward.

  As described above, pulleys and belts are used as the power transmission method, but spur gears, magnetic gears, worm gears, bevel gears, chains and sprockets, and friction wheels may be used as other methods. .

Further, as shown in FIG. 9, a vibration isolating material 13a is arranged on the lower end surface of the cylindrical housing 1 below the speaker fixing lid 43 in accordance with the speaker frame, and above the magnet back of the speaker unit. A small-diameter bass speaker 9 having a weight 26 extending from the front is placed face down, and a vibration isolating material 13a is again arranged on the speaker frame from above, and a speaker support 15 is further placed thereon and fixed. .
In this state, the small-diameter bass speaker 9 is fixed, but the vibration isolator 13a flexibly supports the speaker unit and has a cushioning action, so that it swings when shaken strongly. This is inserted and fixed to the lower end of the cylindrical housing 1.

The vibration generated when the small-diameter bass speaker 9 emits sound is not transmitted to the housing by the cushioning action of the weight 26 extending from the back surface of the magnet and the vibration isolating material 13a, and the vibration waveform is sounded first from the diaphragm on the back surface of the speaker. However, the sound of the small-diameter bass speaker 9 is not mixed again after a long time and the sound is not turbid.
The weight 26 extending from the back of the magnet of the speaker unit has the effect of suppressing the vibration of the speaker itself due to the reproduced sound, so even if you listen from a distance or listen to it with a low volume, the sound image will not be destroyed, You can listen to the recorded sound source information as it is.

Further, as shown in FIGS. 1 and 2, a sound outlet 28 is disposed around the entire side surface of the upper portion of the cylindrical housing 1, and radiates from the diaphragm on the back of the small bass speaker 9 and rises from this portion. The incoming sound wave is discharged from the sound outlet 28 by the diffusion cone cone 6 disposed inside the cylindrical housing 1.
By connecting the sound source amplified by the amplifier to the compression driver 25b and the terminal of the small bass speaker 9 through a passive crossover of 800 Hz, the connection of both reproduced sounds is improved. Here, the small bass speaker 9 may be a full range speaker. Note that the ratio of sound output from both speakers can be changed by turning the left / right balance adjustment of the amplifier.

  It is desirable that the length of the cylindrical housing 1 in the vertical axis direction is between 1/2 and 1/4 wavelength of the lowest resonance frequency of the speaker unit 9. In practice, the optimal length is determined by listening to the sound.

  The material of the cylindrical housing 1 is not a wood used in the prior art but a metal such as aluminum or a synthetic resin. Further, the inner and outer surfaces of the cylindrical housing 1 are preferably smooth surfaces having no irregularities in order to prevent vibrations mainly composed of longitudinal plane waves from being reflected at the sudden change portions of the surface shape.

  The gelling material of the vibration isolator 12a may be an elastic body having pressure dispersion capability such as rubber, sponge, polyurethane, cork, polyethylene foam, urethane foam. The magnet at the rear part of the speaker and the weight 26 can be joined together as long as it can be firmly joined. There is no particular limitation such as adhesion, press-fitting, fixing with screws, welding, etc. The material is iron, but the metal is heavy. Of these, brass, lead and damping alloys are still preferred. A bass speaker may be used as a full range speaker.

  A diffusion cone cone 6 fixed by a cone support rod 7 is disposed at the tip of a rotating horn-shaped horn 5b (see FIGS. 5 and 8). The angle of the apex of the diffusion cone cone 6 is preferably 90 degrees or more, but if this is taken, the directivity of the horn is considerably narrowed. A strong amplitude-modulated vibrato and tremolo effect can be obtained in a high frequency range.

  A rotary simulator that electronically processes and changes the waveform of the sound emitted from the small bass speaker 9 disposed on the lower surface of the cylindrical housing 1 into vibrato, tremolo, and chorus effects is separated from the cylindrical housing 1 by wiring. By connecting, the weight of the cylindrical housing 1 itself is reduced.

In the rotary simulator, vibrato, tremolo, chorus effect, and the like are set in advance according to the number of rotations of the horn 5b that is formed by bending. Then, put it on the floor and in the middle of the song, operate the switch with your feet to bring out the previous effect.
Use of a rotary simulator eliminates the need for maintenance because no mechanical parts are used, and contributes to reducing the weight.

  In addition, since the wiring of the signal current for operating the compression driver 25b and the small bass speaker 9 is separately passed, the effect of the rotary simulator does not reach the compression driver 25b. In the future, the vibrato, tremolo and chorus effects of the rotary simulator can be automatically functioned by the digital rotary simulator in accordance with the FAST, SLOW and third rotation speed of the horn 5b.

Further, as shown in FIGS. 1 and 2, the tripod 12 is disposed in the lower part of the cylindrical housing 1, and the tripod fixing screw 11 is turned and fixed at a desired position height. By moving up and down the tripod fixing screw 11 so that the cylindrical housing 1 does not fall down, a direction 46 in which high sound is emitted from the horn 5b formed by bending, a direction 47 in which middle tones are emitted from the sound outlet 28, and a cylindrical housing The height at which sound is emitted in 360 degrees horizontally can be changed from a total of three locations 48 in the direction 48 in which medium bass sounds are emitted from the front surface of the small bass speaker 9 on the lower surface of 1.
Since the main body is light, the listening service area can be made very wide by placing it on a table, and the reproducibility effect of the sound field space can be improved.

In addition to FAST about 400 rpm and SLOW about 40 rpm, horn 5b is steplessly curved from the SLOW state where the reproduced sound is the minimum to the maximum FAST of about 400 rpm as the third rotational speed. Rotate.
As shown in FIG. 20, the third rotation speed means that a sound source is amplified by a stereo amplifier (amplifier), and a signal current reproduced by a speaker is reproduced by a PWM control method through a music dimming control device. The household electric power is continuously controlled in a stepless manner between 0% and 100% in synchronism with the volume level.
The controlled power is applied to the DC brushless motor 4 that does not generate noise, and the rotation speed of the horn 5b is continuously and steplessly controlled in a stepless manner in synchronization with the volume reproduced by the speaker. This number of rotations is selected with a changeover switch.

Further, the rotation speeds of the other FAST and SLOW are selected by the changeover switch in the same manner as the third rotation speed. However, unlike the third rotational speed, the music dimming control is not performed, and the rotational speed is determined in advance only by the PWM control method (see FIG. 20).
The changeover switch consists of four parts, STOP, SLOW, FAST, and the third rotation speed. In the future, in addition to the dedicated terminal pins used in the conventional HAMMOND (registered trademark) organ, Connect the FAST and SLOW rotation wiring to the rotation speed selection switch located on the line input or organ, and use a touch switch etc. to check the ON / OFF state of the third rotation speed separately such as LEDs. It is possible to respond electrically such as arranging a small light.

  In addition, the FAST, STOP, and SLOW manual rotation speed changeover switches conventionally used for HAMMOND (registered trademark) organs are added with a third rotation speed switch to form a total of four types of switching configurations. The wiring connected to the four types of change-over switches can be replaced with the above-mentioned manual change-over switches, and it is possible to respond electrically such as contributing to the convenience of switch operation during performance.

As shown in FIG. 18, the input frequency of the sound to be controlled by the music dimming is divided into three parts, ie, a high sound range of 18000 hertz or higher, a mid sound range of 400 to 20000 hertz, and a low sound range of 0 to 450 hertz. The input frequencies from the high frequency range 20000 Hz to the low frequency range 0 Hz are used collectively.
Further, it is technically possible to set the number of rotations of the horn 5b, which is individually curved and selected to be controlled according to the content of the musical sound to be reproduced, to the third rotation.
It should be noted that the three ranges of input frequencies shown in FIG. 18 can be electrically handled so that they can be adjusted.

  Also, when selecting the number of rotations, the input gain can be adjusted on the amplifier side according to the volume of the master volume such as an organ, and this can be adjusted before playing the musical sound within the desired playback volume range. The rotation of the bent rotary horn 5b can be controlled gradually.

  Wiring to the motor 4 and the two upper and lower speakers (compression driver 25b, small-diameter bass speaker 9) shown in FIG. 2 is performed by plugging / unplugging the motor power terminal 23 and speaker input terminal 24. Here, there are four types of wiring methods to the upper and lower two speakers (compression driver 25b, small-diameter bass speaker 9) and the amplifier as described below.

The first wiring method distributes the left and right speaker signal currents of the stereo amplifier with an output impedance of 8 ohms into the plus and minus of the 8 ohm compression driver 25b and the 8 ohm small bass speaker 9, respectively. This is a method for stereo playback of the upper and lower speakers (compression driver 25b, small-diameter bass speaker 9) in the shape housing 1.
In this case, all four places of the positive and negative terminals of the left and right speaker outputs of the amplifier are used. As a result, when a stereo output sound source such as a keyboard is reproduced, an effect of improving the expressiveness of sound due to the expansion of the sound field by the single upper and lower speakers is produced.

The second wiring method is a method of connecting two upper and lower speakers (compression driver 25b, small-diameter bass speaker 9) in parallel, and is mono, unlike the first wiring method. If the amplifier's speaker output impedance is compatible with playback from 8 ohms to 4 ohms, either the upper and lower two same 16 ohm speakers or the two 8 ohm speakers can be used in parallel.
In this case, when 16 ohm speakers are connected in parallel, the impedance is 8 ohms, and when 8 ohm speakers are connected in parallel, the impedance is 4 ohms. In this connection method, one positive side of the amplifier-side speaker terminal is connected to the positive side of the compression driver 25b and the positive side of the small bass speaker 9, and the negative side of the amplifier-side speaker terminal is connected to the negative side of the compression driver 25b. Connected to the negative side of the bass speaker 9, a single cylindrical housing allows monaural reproduction of two upper and lower speakers.
In this case, only the two positive and negative terminal outputs on one side of the amplifier are used. With this wiring method, since two speakers are connected, it becomes impossible to connect the wiring of the rotary simulator only to the small bass speaker 9.

  The third wiring method is a method of improving the connection of both reproduced sound frequencies by connecting to the terminal of the compression driver 25b and the small bass speaker 9 through a passive crossover. In this method, use two amplifiers on both the positive and negative terminals on one side of the amplifier. In this method, it is impossible to connect the wiring of the rotary simulator.

  When two monaural casings with either the second or third wiring method above are connected to the amplifier output terminal to make a stereo, all the four positive and negative terminal outputs of the amplifier's left and right speakers are all use. By using these two units when playing a stereo output sound source such as a keyboard, the effect of improving the expressiveness of sound due to the expansion of the left and right sound fields is born.

  As shown in FIG. 1, a handle 40 is disposed on the lower side of the outlet 28 of the cylindrical casing 1 so that the cylindrical casing 1 can be easily grasped when the rotary speaker device is moved.

  As described above, according to the present embodiment, the cylindrical housing 1 is formed into a cylindrical shape, and the compression driver 25b and the small-diameter bass speaker 9 are provided with the weight 26 extending from the back surface of the magnet of the compression driver 25b and the small-diameter bass speaker 9. Since the reactance of the acoustic impedance on the back surface of 9 can be reduced and the resistance load can be made substantially pure, it is possible to obtain a high-quality reproduced sound with less disturbance in the temporal relationship between the component waveforms constituting the noise. Transmission of mechanical vibration generated by the compression driver 25b and the small-diameter bass speaker 9 to the cylindrical housing 1 is suppressed, and the cylindrical housing 1 vibrates due to the back sound pressure of the compression driver 25b and the small-diameter bass speaker 9. Again compression driver 25b and small-diameter bass Mechanical vibrations transmitted to the speaker 9 is also attenuated suppressed.

(Other examples)
(1) FIG. 9 is a first modification of the first embodiment. In the first modification, a spiral sound path 32 as shown in FIG. 9 is arranged from the upper side of the small-diameter bass speaker 9 disposed at the lower end in the cylindrical housing 1 to the lower part of the diffusion cone cone 6. By installing, it becomes substantially equivalent to lengthening the cylindrical housing, and a richer bass sound can be obtained. The length of the spiral sound path 32 is actually determined by listening to the sound.

(2) FIG. 15 is a second modification of the first embodiment. The second modification is characterized in that a joint 59 having a different diameter is provided on the lower opening surface of the cylindrical housing 1 as shown in FIG. 15, and a weight 26 is arranged at the rear of the speaker in the thicker opening. The front surface of the small-diameter bass speaker frame, which is one size larger than the provided diameter, is sandwiched downward by the vibration isolator 13a and fixed by the speaker support base 15. This makes it possible to expect a rich reproduction sound. In this case, since the reflected sound pressure rising from the back surface of the speaker diaphragm increases, a sound absorbing material 29 such as felt or glass wool that extends in a cylindrical shape is disposed in the cylindrical housing 1, and the reflection in the cylindrical housing 1. Suppresses vibration caused by sound pressure waveform.
In (2) above, if the loudspeaker is too large, the loudspeaker diaphragm will be heavy, making it difficult for quick and agile vibrations, or causing split vibrations, making it impossible to produce delicate playback sounds. For this reason, it is desirable to keep the speaker one size larger.

(3) FIG. 16 shows a third modification of the first embodiment. In the third modification, the anti-vibration material has a front face of two speakers having a weight 26 disposed on the rear part of the speaker on the inverted Y-shaped bifurcated joint 60 disposed on the lower opening surface of the cylindrical housing 1 with the front face facing downward. It is sandwiched by 13a and fixed by a speaker support base 15.
Since the two speaker terminals are wired in parallel to provide two outlets for the reproduced sound, the reflected sound pressure rising from the front and back of the speaker diaphragm is substantially doubled. By doubling the sound absorbing material 29 such as felt or glass wool in the cylindrical housing 1, vibration due to the reflected sound pressure waveform in the cylindrical housing 1 is attenuated and suppressed.
In addition, a vibration damping material is used as the material of the speaker support 15, and vibration from the speaker is superposed on the vibration isolating material 13 a to suppress attenuation, and vibration transmitted to the cylindrical housing 1 is suppressed.

(4) FIG. 5 shows a fourth modification of the first embodiment. In the fourth modification, the curved horn 4a is only one horn, and in order to balance the weight, the balance rod 21 and the balance weight 22 are arranged on the opposite side of the horn so as to rotate smoothly. It is.

  With the cylindrical fixed shaft 3 turned upside down, the gelling material of the vibration isolating material 13a is disposed inside, and the frame mounting surface of the full range speaker 25a having the weight 26 disposed on the rear portion of the speaker is placed thereon, and further thereon. The vibration isolator 13a is provided with a gelling material, and the speaker support 15 is provided and fixed. At this time, the speaker is fixed, but if it is shaken strongly, it will be shaken by the vibration-proofing action of the gelled material of the vibration-proofing material 13a. The cylindrical fixing shaft 3 is turned upside down again, and the rotary horn cover 10 is fitted on the upper end surface of the opening of the cylindrical housing 1 and fixed with a stopper 14. The vertical portion of the cylindrical fixed shaft 3 and the cylindrical rotary shaft 27 of the vertical portion of the horn 5a which is formed by bending are overlapped as a role of the thrust bearing. For the purpose of reducing the friction of the joint portion, a product made of Teflon (registered trademark) is used. When the sleeve 17 and the Teflon (registered trademark) washer 30 are disposed, the curved horn 5 a can be rotated lightly, and is disposed on the curved horn 5 a via the belt 20 from the pulley 8 b of the motor 4. A pulley 8a is rotated. By setting the upper diameter of the cylindrical fixed shaft 3 to be close to the diameter of the diaphragm of the full-range speaker 25a, the reproduced sound passes through the horn 5a that has been bent and shaped without distortion.

(5) FIG. 10 shows a fifth modification of the first embodiment. In the fifth modification, a cylindrical body 35 (see FIG. 11) is provided with a gap 58 on a part of the side surface except for the top and bottom surfaces of the cylindrical housing on the outer periphery of the sound outlet 28 portion at the top of the cylindrical housing 1. ), A guide rail 33 and a driving device 54, and a motor for a cylindrical body is disposed on the motor mounting stay 55, and the pulley 34 is rotated from the pulley 56 through the belt 57. As a result, the sound source radiated from the rear surface of the diaphragm of the small-diameter bass speaker 9 on the lower surface of the opening of the cylindrical casing rises inside the cylindrical casing 1 and rotates from the sound outlet 28 at the top of the cylindrical casing 1. The radiation diffuses 47 through the gap 58 and to the outside of the cylindrical housing.
By rotating and radiating and diffusing 47 through the gap 58 on the side surface of the cylindrical body 35, the swell action of vibrato, tremolo, and chorus can be given to the reproduced sound of middle and low frequencies.

(6) Further, the guide rail 33 and the cylindrical body 35 are made of synthetic resin, Teflon (registered trademark), or a material having a small friction coefficient in order to lightly rotate and improve sliding. Further, preferably, a thrust bearing that improves lubricity is sandwiched between the cylindrical body 35 and the cylindrical housing 1 so that the rotation can be further lightened.
The rotation speed is the same as that of the curved horn 5b, but the rotation direction is reverse.

(7) In the above, the rotary speaker device according to the present invention is shown in a plurality of embodiments. However, the present invention is not limited to this, and the partial components of the rotary speaker device may be arbitrarily combined.
Any of the partial components of the rotary speaker device of the present invention can be incorporated in a conventional box-type rotary speaker device as shown in FIGS.
For example, a conventional box-type rotary speaker device is further provided with a music dimming control unit, and a rotational speed other than slow and fast is provided as the third rotational speed, and is led from the input signal terminal of the speaker unit. The music dimming control is performed in synchronism with the intensity of the music signal current, and the voltage signal subjected to the dimming control is applied to the motor, so that the rotation speed of the bent horn is rotated at the third rotation speed. Is possible.

DESCRIPTION OF SYMBOLS 1 Cylindrical housing 2 Felt material 3, 3a Cylindrical fixed shaft 4 Motor 5a, 5b Curved horn 6 Diffusion cone cone 7 Cone support rod 8a, 8b Pulley 9 Small-diameter bass speaker 10 Rotary horn cover 11 Tripod fixing screw 12 Tripod 13a Vibration isolator 14 Rotary horn cover stopper 15 Speaker support 16 Passive crossover 17 Sleeve 18 Amplification amplifier 19 Speaker stopper 20 Belt 21 Balance rod 22 Balance weight 23 Motor power terminal 24 Speaker input terminal 25a Full range speaker 25b Compression driver 25c Low sound Speaker 26 Weight extended from the back of the speaker magnet 27 Cylindrical rotating shaft 28 Sound outlet 29 Sound absorbing material 30 Washer 31 Bus rotor 32 Spiral sound path 33 Idrail 34 Pulley 35 Cylindrical body 36 Rotating drum 37 Bearing 38 Pulley 39 Shaft 40 Handle 41 Partition plate 42 Housing 43 Speaker fixing lid 44 Bus rotor frame 45 Connection plate 46 Direction of rotating high-frequency sound 47 Direction of medium-low sound from the back of the speaker 48 Direction of medium and low sound coming out from the front of the speaker 49 Direction of rotation and medium and low sound coming out 50 Motor for rotating drum 51 Motor mounting stay 52 Pulley 53 Belt 54 Motor for cylindrical body 55 Motor mounting stay 56 Pulley 57 Belt 58 Clearance 59 Different diameters Joint 60 Fork joint 61 Horn-shaped 62 Speaker frame

Claims (11)

A magnet, a frame, a diaphragm, and a weight extending from the back surface of the magnet are provided, and the diaphragm is vibrated by electromechanically converting the low frequency signal in response to the low frequency signal. A speaker unit that generates and emits sound waves from
An upright cylindrical housing, wherein the speaker unit is fixed to the upper surface opening of the cylindrical housing with the front surface of the diaphragm facing upward, and a speaker housing having a cylindrical bottom opening;
In a speaker device composed of
1) The upper and lower sides of the frame of the speaker unit are sandwiched by vibration-proof materials, and are fixed to a portion that contacts the inner wall surface of the cylindrical housing,
2) A cylindrical fixed shaft having a vertical axial direction is provided directly above the speaker unit.
3) a curved horn having a cylindrical rotation shaft that is pivotally attached to the cylindrical fixed shaft;
4) driving means for rotating the cylindrical rotation shaft;
A rotary speaker device comprising: A second magnet, a second frame, a second diaphragm, and a second weight extending from the back surface of the second magnet, and electromechanically converting the low frequency signal in response to the low frequency signal, A second speaker unit that vibrates two diaphragms and generates and emits sound waves from the front surface of the second diaphragm;
The second speaker unit has a bottom opening portion of the speaker housing, the front surface of the second diaphragm faces downward, and the upper and lower sides of the second frame are sandwiched between vibration isolating materials, and the cylindrical housing is Adhering to the part that contacts the inner wall,
A sound outlet hole is provided on the entire circumference of the side surface of the cylindrical housing upper part or the central part.
The rotary speaker device according to claim 1. A music dimming control unit is further provided,
The signal current of the low frequency signal is input to the music dimming control unit, and the music dimming control is performed in continuous synchronization according to the strength of the low frequency signal, and the output voltage of the music dimming control unit The rotary speaker device according to claim 1 or 2, wherein a signal is applied to the driving means, and the rotational speed of the horn can be controlled in a stepless and rapid manner in synchronism with the intensity of the signal current of the musical sound. A second cylindrical casing provided on the outer periphery of a portion provided with a sound outlet hole in the entire circumference of a side surface of the cylindrical casing upper part to the central part; a guide rail that supports the second cylindrical casing; A second driving device for rotating the second cylindrical housing;
The second cylindrical housing is provided with a second outlet hole for sound in a part of the side surface,
By rotating the second cylindrical casing with the second driving device along the guide rail, sound is emitted from the sound outlet hole provided on the side surface of the cylindrical casing. The rotary speaker device according to claim 2, wherein the rotary speaker device radiates and diffuses outward while rotating through the second outlet hole on the side surface of the rotary speaker device. A curved slide base shape that is vertically attached to the lower side of the second speaker unit, is fixed to a vertical shaft serving as a rotation shaft, and gradually becomes horizontal from the upper inner surface to the lower inner surface facing the lower inner surface. Rotating drum,
A third driving device for rotating the rotating drum;
The sound wave radiated downward from the second speaker unit radiates and diffuses outward while rotating through the slide shape of the rotating drum by rotating the rotating drum. The rotary speaker device according to claim 2 or 3.   It further comprises simulation means for electronically giving a vibrato effect, a tremolo effect, or a chorus effect to a sound wave emitted from the second speaker unit disposed on the lower surface of the opening of the cylindrical housing. The rotary speaker device according to claim 2 or 3.   The rotary speaker device according to claim 1, wherein a spiral sound path is provided inside the cylindrical housing. A magnet, a frame, a diaphragm, and a weight extending from the back surface of the magnet are provided, and the diaphragm is vibrated by electromechanically converting the low frequency signal in response to the low frequency signal. A speaker unit that generates and emits sound waves from
An upright box-shaped housing, wherein the speaker unit is fixed to the upper portion of the box-shaped housing with the front surface of the diaphragm facing upward;
In a speaker device composed of
1) The upper and lower sides of the frame of the speaker unit are sandwiched by vibration-proof materials, and fixed to the portion of the box-type housing that comes into contact with the housing frame,
2) A cylindrical fixed shaft having a vertical axial direction is provided directly above the speaker unit.
3) a curved horn having a cylindrical rotation shaft that is pivotally attached to the cylindrical fixed shaft;
4) driving means for rotating the cylindrical rotation shaft;
A rotary speaker device comprising: A second magnet, a second frame, a second diaphragm, and a second weight extending from the back surface of the second magnet, and electromechanically converting the low frequency signal in response to the low frequency signal, A second speaker unit that vibrates two diaphragms and generates and emits sound waves from the front surface of the second diaphragm;
The second speaker unit has a housing of the box-shaped housing in a lower portion of the speaker housing, with the front surface of the second diaphragm facing downward, and with the top and bottom of the second frame sandwiched by vibration-proof materials. Fix it to the part that contacts the frame,
Provided a sound outlet hole on the lower side of the box-shaped housing,
The rotary speaker device according to claim 8. A music dimming control unit is further provided,
The signal current of the low frequency signal is input to the music dimming control unit, and the music dimming control is performed in continuous synchronization according to the strength of the low frequency signal, and the output voltage of the music dimming control unit The rotary speaker device according to claim 8 or 9, wherein a signal is applied to the driving means, and the rotation speed of the horn can be controlled in a stepless and rapid manner in synchronism with the intensity of the signal current of the musical sound. The rotary speaker device according to claim 3 or 10, wherein a light emitting diode of at least one color is provided, and the light emitting diode emits light according to an output voltage signal of the music dimming control unit.