JPH09135489A - Coaxial speaker and coaxial all horn speaker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve connection of sound frequency bands of speakers by adopting horn speakers for all speakers and making axial lines of sound radiating from each speaker in matching with each other. SOLUTION: Low frequency sound emitted from woofers 11a, 11b are compressed in a throat-line narrow path formed in the middle of low sound frequency horns 14a, 14b in the vertical direction and mixed with high frequency sound emitted from a tweeter speaker horn 13 on the axial lines and the mixed sound is emitted forward. On the other hand, a medium frequency sound emitted from a squawker 12 is mixed with the low frequency sound from the woofer 11b and progressed and emitted from the tweeter 13 at an opening 16. Furthermore, the sound emitted from the rear face of the woofers 11a, 11b is emitted while bing resonated with an air port 15 to reproduce ultralow frequency sound. Since the sounds of the same property consisting of the high, medium and low frequency sounds are emitted on a matched axial line with excellent directivity, the sound excellent in listening sense and with well-arranged sound frequency bands is heard over a wide range.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device composed of a plurality of speakers, and in particular, when the speakers are arranged on the same axis, or in the case of a plurality of horn-type speakers, the sound wave generated from the horn is generated. The present invention relates to a coaxial type speaker device and a coaxial type all-horn speaker device in which horns are arranged so as to be on the same axis line and the connection of sounds in each range is improved.

[0002]

2. Description of the Related Art In a speaker device including a plurality of speakers, it is one of the most important points in terms of hearing that sound waves emitted from all the speakers are smoothly connected at all assumed positions of a listener. Is one.

Generally, in a speaker device including a plurality of speakers, there are two or three, four, etc. combinations of frequencies, each of which has its own frequency range, and the upper limit or maximum limit for maximizing the characteristics of each speaker. It is constructed so that the upper and lower limits and the lower limit continue the musical range. For example, in the case of being composed of three speakers, the bass speaker is 35 to 800 Hz, the midrange speaker is 800 to 7000 Hz, and the treble speaker is 700.
It covers the frequency range of sounds above 0 Hz.

As described above, the low-pitched loudspeaker and the mid-tone loudspeaker are jointed in many cases at a frequency of 500 to 1000 Hz, but the mid-tone speaker and the high-pitched loudspeaker are jointed in the range of 2500 to 200 Hz.
It varies between 00 Hz.

By the way, there are various types of speakers, such as a horn type, in order to give directivity to sound waves in design. Since the bass speaker is a cone type speaker, it has the weakest directivity.

Further, since the center frequency of the speaker is determined by design, the speaker is attenuated to some extent as it goes away from the center frequency on both sides. Further, the farther the sound range is from the axis, the more extreme the attenuation characteristic becomes, and the higher the sound range becomes, the stronger the attenuation characteristic becomes.

Therefore, in a speaker device including a plurality of speakers, it is important for reproduction of sound quality, sound localization, sound resolution, presence, etc. that the directivity, phase, and radiation axis of each speaker match. . For example, if the directivity of a speaker is too strong, the connection between the sound range of the sound from that speaker and the sound range of the sound from another speaker deteriorates, which impairs hearing. Also, if there is not much directivity, the sound will spread,
Since it is difficult to reach the position of the listener, the volume will be increased. Then, when reproduced in a small room, so-called room noise is caused, and the influence of the reflected sound becomes strong, which deteriorates the listening feeling. Therefore, it is better to have directivity as much as possible within the range that covers the listening range.

As shown in FIG. 19, a speaker device 1 conventionally used in audio equipment has a speaker box 2 having a low-pitched speaker 3a, and a mid-tone speaker 3b placed on the speaker box 2. In many cases, a single unit is arranged, and the high-pitched speaker 3c is further stacked and arranged thereon.

The speaker device 1 shown in FIG. 19 uses a horn-type speaker in the mid-high range, which is more attenuated by the transmission distance as the frequency becomes higher, thereby preventing diffusion to a portion having a large radiation angle and directivity. It has an improved configuration.

Further, conventionally, a bass reflex system in which an air port resonates is used for reproducing deep bass.

[0011]

However, in the above-mentioned conventional speaker device, since the axes of the sound waves output from the speakers are not coincident with each other, the connection of the sounds in each range is poor, and the localization and resolution of the sound source are improved.・ In addition to impairing the sense of separation and presence of sound, the low-frequency speaker is not a horn type, so there is a lot of diffusion to the surroundings, the radiation balance with mid-high frequencies is disturbed, and a phase difference occurs depending on the position of the listener. There was a problem of impairing hearing.

Further, since the mid-high range speaker having a strong directivity is arranged at a high position above the low-range speaker, depending on the position of the listener, the listener hears the sound at a large attenuation angle, which may not give a stereo feeling. , There was a problem of listening to a sound with a deviated range and no atmosphere. Furthermore, when the sound is raised, the bass speaker is not a horn type,
There was also the problem that sound waves diffuse throughout the room and cause room noise. Therefore, the present invention has a problem in a speaker device that solves the above problems.

[0013]

In order to solve the above problems, a coaxial speaker device and a coaxial all-horn speaker device according to the present invention include a bass speaker, a mid-range speaker, and a treble speaker. Are arranged at appropriate positions, and the arrangement state of the speakers is that the axes of the sound waves emitted from the speakers are aligned with each other.

Further, there is provided a speaker device in which a bass horn used for a bass speaker, a midtone horn used for a midrange speaker, and a treble horn used for a treble speaker are arranged at appropriate positions. The arrangement state of the horns is such that the axes of the sound waves emitted from the horns are aligned; the structure that aligns the axes of the sound waves emitted from the horns is emitted from the bass speaker. A bass horn that forms a throat-shaped bottleneck for collecting sound waves on the axis, and the midtone horn and the treble horn are arranged on the axis in a space surrounded by the bass horn; The horn and / or the midtone horn shall be made of hollow lightweight aggregate; one shared horn is detachably attached to the front surface of one or at least two speaker devices arranged at appropriate positions. A low-pitched horn is attached to the inside of the shared horn; the inside of one shared horn provided on the front surface of one or at least two speaker devices arranged at appropriate positions follows the shape of the throat-shaped narrow path. It is a coaxial type all-horn speaker device that is provided.

Further, it is a mid-high range horn that shares a high range horn and a middle range horn, and is a coaxial type speaker device in which a high range is generated from behind a sound path in which a middle range is generated and the axes of sound waves are aligned. .

In this way, it is unnecessary to make the traveling directions of the sound waves of the plurality of speakers on the same axis line, and to unify the radiation characteristics by unifying all the sound waves in the horn type and to strengthen the directivity. A means for preventing the diffusion of sound waves into the range and having a mixer effect for matching the axes of the sound waves emitted from all the speakers is provided, thereby improving the sound connection between the sound ranges of the speakers and at the same time, the sound source. In addition to improving the localization, resolution, sound separation, and realism, the structure is such that the output of the loudspeaker (amplifier) device is small because of the unidirectional integration of radiant energy.

Further, it is possible to hear only the pure best sound emitted from the speaker device in which the reflected waves due to the diffusion to the unnecessary area are reduced by consolidating the emission areas.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION First speaker device according to the present invention
The coaxial all-horn speaker device 20 will be described as an embodiment. As shown in FIGS. 1, 2, and 3, the coaxial all-horn speaker device 20 is disposed above and below the rear portions of the bass horns 14a and 14b attached to the speaker box 10 having an opening at the front. Was done 2
Bass speakers 11a and 11b, one horn-type mid-tone speaker 12 disposed between the two bass speakers 11a and 11b, and an axis line in front of the horn-type mid-tone speaker 12. And a horn-type high-tone speaker 13 arranged in parallel with each other, and a throat-shaped bottleneck for sound waves emitted from the low-pitched loudspeakers 11a and 11b so as to be integrated vertically from the side of the speaker box 10. Manju-shaped bass horn 14 attached to the inner surface
a and 14b, and a heavy bass air port 15 provided in the lower portion of the speaker box 10.

Since the structure of each horn speaker is well known, its explanation is omitted. The low-pitched horns 14a and 14b and / or the horn of the middle-tone speaker 12 are hollow aggregates hardened with epoxy resin, and are called lightweight epoxy mortar. They are lighter and have higher strength than conventional cement.・ Has low resonance and can be thinly molded.

The bass port 15 is of a well-known bass reflex system. The speaker device operates as follows.

The low-pitched sound emitted from the low-pitched loudspeakers 11a and 11b is compressed by the throat-shaped narrow passage formed in the central portion of the low-pitched sound horns 14a and 14b in the vertical direction, and as a result, emitted from the high-pitched loudspeaker horn 13. It is mixed with treble on the axis and radiated forward.

On the other hand, the middle tone emitted from the horn-type middle tone speaker 12 advances forward while being mixed with the low tone emitted from the low-pitched loudspeakers 11a and 11b, and the horn-type high-pitched loudspeaker is opened at the opening 16 shown in FIG. It is radiated so as to wrap 13 around.

Further, the sound emitted from the rear surface of the bass speakers 11a and 11b is emitted while resonating with the air port 15 to reproduce a deep bass sound.

As described above, since high-pitched sound, middle-pitched sound, and low-pitched sound are radiated with excellent directivity along the same axis, the sounds having the same characteristics are well connected to each other in a wide range and have very excellent audibility. You can hear the sound.

Next, a second embodiment of the speaker device according to the present invention will be described with reference to the drawings. The same components as those described in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

As shown in FIGS. 4 and 5, the speaker device according to the second embodiment has a structure in which bass horns 14c and 14d are provided above and below and to the left and right inside the speaker box 10. That is, in FIG. 4, a throat-shaped narrow path is formed in the low-pitched sound horns 14c and 14d in the up-down direction and the left-right direction, and the entire flow path in the direction in which sound is generated is controlled by the throat-shaped narrow path.

With this structure, the low-pitched sound generated from the low-pitched loudspeakers 11a and 11b passes through the throat-shaped narrow paths in the vertical and horizontal directions in FIG. It is mixed with voice and output with the same axis for each of the high, medium and low tones.

Although the speaker device according to the second embodiment has a structure in which the throat-shaped bottleneck is provided in the upper and lower sides and the left and right sides, the present invention is not limited to this, and for example, a tonkuri-shaped cylindrical throat shape. It may be a bottlenecked structure. The point is that the bass sounds should be mixed in the middle and high-pitched sound areas so that the sounds in the respective areas can be felt as if they were generated from the same sound source.

Next, a third embodiment of the speaker device according to the present invention will be described with reference to FIGS. 6, 7 and 8. The same components as those described in the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

The speaker device 30 of the third embodiment is
As shown in FIG. 6, two coaxial all-horn speaker devices 20 shown in FIG. 1 according to the first embodiment are arranged on the left and right, and a common horn 31 is provided in each of the openings 16.
It is a twin-type speaker device 30 to which is attached detachably.

This twin type speaker device 30 has a structure in which a cylindrical common horn 31 is detachably attached to the front surface of a coaxial type all horn speaker device 20 composed of an air port 15 and an opening 16. This shared horn 3
1 may be detachable or may have a structure assembled from the beginning.

As shown in FIG. 7, the upper plate 32 of the shared horn 31 has a structure that expands obliquely upward in accordance with the bending angle of the bass horn 14a. On the other hand, the shared horn 31
The lower plate 33 has a structure that extends horizontally from the bottom plate 20 a of the speaker box 10. Further, as shown in FIG. 8, both left and right sides of the shared horn 31 are also opened outward.

In the speaker device 30 having such a structure, the common horn 31 is the coaxial all-horn speaker device 20.
It is possible to prevent diffusion of sound in the low-pitched sound region generated from the air port 15 and the opening 16. That is, although a large opening area was originally required to efficiently generate the sound in the low-pitched sound region in the predetermined direction, the addition of the shared horn 31 enables the reproduction of super-low-pitched sound. Further, since the shared horn 31 has a shape shared by the two speaker devices, the occupied area can be reduced as compared with adding a horn to each speaker individually.

Next, a fourth embodiment of the speaker device according to the present invention will be described with reference to FIGS. 9 and 10.

As shown in FIGS. 9 and 10, the speaker device 40 according to the fourth embodiment includes the air port 15 according to the frequency of the super bass sound to be reproduced, the size of the shared horn 31, and the like. That is, the shared horn 31 is detachably attached to the tip of only the opening 16 of the coaxial all-horn speaker device 20.

Next, a speaker device 50 according to a fifth embodiment of the present invention will be described with reference to FIGS. 11 and 12. Since this embodiment has the speaker structure of the second embodiment described with reference to FIGS. 4, 5 and 6 described above, the same reference numerals will be given to the same components and the description thereof will be omitted. Omit it.

The speaker device according to the fifth embodiment is
As shown in FIGS. 11 and 12, the speaker box 10
11, the speaker device having the bass horns 14c and 14d provided with the throat-shaped narrow paths on the upper and lower sides and the left and right sides in FIG.
It has a structure in which is attached detachably.

With this structure, the low frequency sound mixed by the low frequency sound horns 14c and 14d is further concentrated into the low frequency sound wave by the common horn 31, so that the low frequency sound is reproduced without requiring a large opening area. Will be able to.

Next, a speaker device 50 according to a sixth embodiment of the present invention will be described with reference to FIG. Incidentally, this embodiment is described above with reference to FIGS. 4, 5 and 6 above.
Since the speaker structure of the second embodiment described with reference to FIG. 3 is used, the same components are given the same reference numerals and the description thereof will be omitted.

The speaker device according to the sixth embodiment is
Inside the speaker box 10, low-pitched horns 14a, 14b, 14 provided with throat-shaped bottlenecks at the top, bottom, left and right
The shared horn 31 is detachably added to the speaker device provided with c and 14d in the form including the air port 15.

With such a structure, the bass mixed in the bass horns 14a, 14b, 14c, 14d is further aggregated into the low-range sound waves by the shared horn 31, so that a large opening area is not required and the low-frequency sound is reduced. It becomes possible to reproduce the range sound.

Next, a speaker device according to a seventh embodiment of the present invention will be described with reference to FIGS. 14 and 15. The same parts as those in the first embodiment will be described by giving the same numbers.

The speaker device according to the seventh embodiment is shown in FIG.
As shown in FIGS. 4 and 15, two speaker devices 20 provided with the bass horns 14a and 14b having the throat-shaped bottleneck shape described in the first embodiment (see FIGS. 1, 2, and 3).
Are arranged at appropriate intervals, and the two speaker devices 2
The common horn 31 provided with the common throat-shaped narrow passages 34a and 34b at 0 is detachably attached.

The throat-shaped narrow passages 34a and 34b are arranged in a relationship orthogonal to each other because the throat-shaped narrow passages of the bass horn are provided in the vertical direction in FIG. ing.

With this structure, the sound from the speakers 11a, 11b, 12 and 13 is first made to coincide with the sound waves of the low and high tones in the vertical direction by the throat-shaped narrow paths of the low-pitched horns 14a and 14b. Then, the low-pitched sound is matched with the high-to-midtone sound wave axis from the left-right direction by the throat-shaped narrow paths 34a and 34b of the shared horn 31. Therefore, the high, middle, and low tones actually output are output in a state of being aggregated from the top, bottom, left, and right, and the reproduction of ultra-low frequencies can be taken out like a so-called large speaker without requiring a large opening area.

Next, a speaker device according to an eighth embodiment of the present invention will be described with reference to FIGS. 16 and 17. The same parts as those in the second embodiment described above are designated by the same reference numerals and the description thereof will be omitted.

The speaker device according to the eighth embodiment is shown in FIG.
6 and FIG. 17, two speaker boxes 10 provided with the bass horns 14a, 14b, 14c, 14d provided with the throat-shaped upper and lower and right and left throats described in the second embodiment are appropriately used. The common horn 31 which is placed in the position and shared by the two placed speaker boxes 10 is detachably attached to the bass horns 14a, 14b, 14c and 14d.

The shared horn 31 includes the bass horns 14a, 1
It is formed so as to be continuous with the shape of the throat-shaped narrow passage provided inside 4b, 14c, and 14d. That is, the throat-shaped bottleneck becomes a continuous shape when attached.

With such a structure, it is possible to further concentrate the low frequency sound waves in the high and middle frequency range as in the second embodiment described with reference to FIGS. 4 and 5. As a result, it is possible to reproduce in the ultra-low frequency range equivalent to a large speaker without providing a large opening surface.

In the second to eighth embodiments, two speaker devices have been described, but the present invention is not limited to this, and one speaker device may be used, or three or more speaker devices may be used. Good. Also, the size of each speaker device,
It is also possible to change the vertical and horizontal lengths of the shared horn 31 according to the distance between the speaker devices. Further, although the throat-shaped bottleneck has been described above and below, above and below, and left and right, it may be only on the left and right.

Next, a speaker device according to a ninth embodiment of the present invention will be described with reference to FIG.

The speaker device according to the ninth embodiment is shown in FIG.
As shown in FIG. 8, it is a horn for generating middle and high tones by using the middle and high tone common horn 60, and is composed of a middle and high tone common horn 60, a middle tone driver 61, and a high tone driver 62. Then, the high-pitched sound from the high-pitched sound driver 62 has a structure in which the high-pitched sound is generated at least from behind the sound path generated from the middle-tone driver 61.

With such a structure, the horn common portion A of the common horn 60 is less than the middle treble mix portion B.
In, the middle and high sound waves can be mixed and matched on the coaxial line.

[0054]

As described above, in the coaxial all-horn speaker device according to the present invention, the plurality of speakers are all of the horn type, and the axes of the sound waves emitted from each speaker are aligned. Since the connection of the sound in each range is improved, the listening feeling is improved, the localization of the sound, the resolution of the sound and the separability of the sound are improved, there is no room ringing and there is no phase shift, so you can enjoy an excellent presence. can do.

Further, since the mounting position of the high-pitched sound speaker is low, the radiation axis coincides with the listener, and the high-pitched sound is less attenuated. Furthermore, the low-pitched horn is made lighter by being made of a lightweight epoxy resin mortar, and can be used not only in a monitor room / outdoor event venue but also in a general home.

Even with a plurality of speakers that are not of the horn type, the above effect is produced by matching the axes of the sound waves emitted.

[Brief description of the drawings]

FIG. 1 is a schematic front view of a coaxial all-horn speaker device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a schematic front view of a coaxial all-horn speaker device according to a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line CC of FIG. 4;

FIG. 6 is a schematic front view of a coaxial all-horn speaker device according to a third embodiment of the present invention.

FIG. 7 is a sectional view taken along line DD of FIG. 6;

8 is a sectional view taken along line EE of FIG.

FIG. 9 is a schematic front view of a coaxial all-horn speaker device according to a fourth embodiment of the present invention.

FIG. 10 is a sectional view taken along line FF of FIG. 9;

FIG. 11 is a schematic front view of a coaxial all-horn speaker device according to a fifth embodiment of the present invention.

12 is a sectional view taken along line GG of FIG.

FIG. 13 is a schematic front view of a coaxial all-horn speaker device according to a sixth embodiment of the present invention.

FIG. 14 is a schematic front view of a coaxial all-horn speaker device according to a seventh embodiment of the present invention.

15 is a sectional view taken along line HH of FIG.

FIG. 16 is a schematic front view of a coaxial all-horn speaker device according to an eighth embodiment of the present invention.

17 is a cross-sectional view taken along the line I-I of FIG.

FIG. 18 is a schematic front view of a coaxial all-horn speaker device according to a ninth embodiment of the present invention.

FIG. 19 is an explanatory diagram showing a conventional technique.

[Explanation of symbols]

Reference numeral 10: speaker box 11a, 11b: low-pitched speaker 12: horn-type mid-tone speaker 13: horn-type high-tone speaker 14a, 14b, 14c, 14d: low-pitched horn (means for aligning axes) 15: airport 1
6: Opening 20: Coaxial all-horn speaker device
30: speaker device 31: common horn 32: upper plate 33: lower plate 34a, 34b, 34c, 3
4d: Shared bass horn 40: Speaker device 50: Speaker device 60: Common treble horn 61: Medium sound driver 62: High sound driver

Claims (8)

[Claims] 1. A speaker device in which a low-pitched speaker, a mid-tone speaker, and a high-pitched speaker are arranged at appropriate positions, and the arrangement state of each speaker is such that each sound wave emitted from each speaker is A coaxial type speaker device having axes aligned with each other. 2. A speaker device in which a bass horn used for a bass speaker, a midtone horn used for a midrange speaker, and a treble horn used for a treble speaker are arranged at appropriate positions. The arrangement of each horn is
A coaxial all-horn speaker device in which the axes of the sound waves emitted from the horns are aligned. 3. A bass horn that forms a throat narrow path for collecting the acoustic waves emitted from the bass speaker on the axis, wherein the acoustic waves emitted from the horns have the same axis. The coaxial all-horn speaker device according to claim 2, wherein the middle-tone horn and the high-pitched horn are arranged on the axis in a space surrounded by the bass horn. 4. The low-pitched horn and / or the mid-pitched horn is made of a hollow lightweight aggregate.
The coaxial all-horn speaker device described in 1. 5. One or at least two arranged at appropriate positions
The coaxial all-horn type speaker device according to claim 2, wherein one common horn is detachably attached to the front surface of one speaker device. 6. The coaxial all-horn type speaker device according to claim 5, wherein a bass horn is attached to the inside of the shared horn. 7. One or at least two arranged at appropriate positions
The coaxial all-horn speaker device according to claim 3, wherein the inside of one shared horn provided on the front surface of one speaker device is provided along the shape of the throat-shaped narrow path. 8. A mid-high-tone horn that shares a high-tone horn and a mid-tone horn, wherein high-pitched tones are generated from behind a sound path in which the mid-tones are generated, and the axes of sound waves are made coincident with each other. Speaker device.