KR20080068289A - The dual speaker - Google Patents

Abstract

A dual speaker is provided to transmit a loud sound to a listener by forming a tweeter for reproducing the loud sound on an external part. A dual speaker includes a middle/bass sound speaker unit(10), a loud sound speaker unit(20), a fixed bracket, and a tweeter housing(50). The fixed bracket having the middle/bass sound speaker unit is fixed to emit a sound to a different direction on a ceiling by a bolt. The tweeter housing having the loud sound speaker is rotatably installed on a bottom plane of the fixed bracket. The fixed bracket includes an upper bracket(31) and a lower bracket(32), and forms a groove between the upper bracket and the lower bracket. The fixed bracket installed a ball bearing between the upper bracket and the lower bracket so that the lower bracket is rotated.

Description

Dual speaker {The dual speaker}

1 is a perspective view showing a dual speaker according to the present invention.

2 is a perspective view showing the configuration of a dual speaker according to the present invention.

3 is a bottom perspective view showing a state in which the dual speaker according to the present invention is installed.

4 is a configuration diagram showing a state in which sound is transmitted from the dual speaker according to the present invention.

5 is a block diagram showing a state in which sound is transmitted to the user through the dual speaker of the present invention.

6 is a structural diagram showing a state where a negative edge is generated by a sound transmitted from a conventional speaker.

* Description of the symbols for the main parts of the drawings *

10: Bass Speaker New 20: Treble Speaker Unit

30: fixing bracket 31: upper bracket

31a: first through hole 31b: fixed hole

32: lower bracket 32a: second hole

33: ball bearing 33a: home

34: first network 40: fixed bar

41: support plate 41a: coupling hole

50: Twitter housing 51: Unit installer

52: sound transmission hole 53: coupling ring

54: second network

The present invention relates to a dual speaker, and more particularly, to configure a tweeter that reproduces the high pitch on the outside to deliver a perfect high pitch to the listener and to rotate at the same time to secure the direction according to the sound transmission, The present invention relates to a dual speaker that is omnidirectional, which has been expanded to reinforce three-dimensional effects.

In general, a speaker refers to an acoustic device that converts an electrical signal into vibration of a diaphragm to generate a small wave in the air to radiate sound waves, also called a loudspeaker or a loudspeaker.

The type in which the diaphragm is placed directly in the air is called a radiant speaker, and the type in which the diaphragm is placed in a horn is called a horn type speaker.

The direct radiation type is mostly a cone speaker commonly used in radio and stereo devices, and a metal vibrating plate is also used.

Conspeakers use a lot of conical plates in the diaphragm, and a coin type is used more than an electromagnetic type magnetic speaker. Since the efficiency is proportional to the square of the total number of magnetic fluxes passing through the coil, the large-diameter using a large magnet has a good electroacoustic conversion efficiency. Sound pressure of 105dB (efficiency about 1.5%) to 90dB (0.3%) is generated at 1m on-axis for 1VA electric input.

Compared to the efficiency of the horn speaker 30 to 40%, the efficiency is inferior, but it is inexpensive and compact. The hybrid type is a trumpet speaker that can be seen outdoors, such as a station or a playground. It is used for mid-sized and smaller speakers because it has good electrical and acoustic characteristics and does not require a sound box to accommodate the speaker. The drawback is that the lowest possible frequency of sound is limited.

There are coin type, electromagnetic type, electrostatic type, dielectric type, magnetostrictive type, etc. according to the principle and method of converting an electric signal into sound waves.

Coin type (dynamic type) with good performance is widely used for music reproduction and voice. The coin type uses the principle that when a voice signal current flows to the coil (boy coil) in the magnetic field of the permanent magnet, a mechanical force acts on the coil according to the strength of the current to cause movement.

The electromagnetic type sends a voice current to the coil installed at the end of the permanent magnet to vibrate the iron pieces between the coils, and transmits the vibration to the diaphragm by the lever to emit sound.

Because of its simple handling, it has been widely used in home radios, but its high frequency characteristics are poor and distorted.

The electrostatic type is sometimes used for high sound levels, and the dielectric type and the magnetostrictive type are used in the ultrasonic region of 20 kHz or more instead of the audible frequency. Among the speakers for audible frequencies, especially those used for high frequency bands (10 kHz and above) are called tweeters. There are mixed and conical types, and the weight of the vibrometer is small.

In the case of the speaker implementing the above function, as illustrated in FIG. 6, there is a problem in that sound interference occurs in a speaker installed on the ceiling of a theater and configured to transmit sound to movie viewers.

That is, as the sound transmitted from each speaker unit arranged in one housing in the up-down direction or the left-right direction is transmitted in the same direction, the sound waves collide with each other, and interference occurs.

As the interference occurs in the sound as described above, there is a problem that it is difficult to transfer the liveness of the movie screened in the theater as it is.

In other words, the phenomena of stereoscopic effect due to negative interference occur.

In addition, in the case of the existing speaker because the bass and treble comes out on the ceiling, the sound field effect appears only to those located under the speaker, there is a problem that does not accurately feel the sound field effect when the distance is far away in the corner of the theater.

The present invention for solving the above problems is an object of the present invention to provide a dual speaker having a non-directional omnidirectional reinforcement of the three-dimensional effect by widening the limited listening range of the speaker, that is, the visible hearing range through the metallic housing.

In addition, an object of the present invention is to provide a dual speaker capable of transmitting a sound having a three-dimensional effect, by preventing interference caused by the frequency of the sound transmitted from each speaker unit so that a canceled sound range does not occur.

In addition, the purpose is to provide a dual speaker that allows the external tweeter to reproduce the high pitch to deliver the perfect high pitch to the listener.

It is also an object of the present invention to provide a dual speaker capable of reinforcing a rich stereoscopic effect and a high-pitched listening switch spot due to the wide visible range of the bass.

In addition, an object of the present invention is to provide a dual speaker that rotates from side to side to determine the point of the sound transmitted by a tweeter installed at the bottom of the housing so that people can hear accurate stereoscopic sound.

The present invention for achieving the above object, in the speaker, the fixing bracket is composed of the bass speaker unit is fixed to the ceiling by bolts so that sound can be transmitted in different directions, the tweeter housing is configured with the treble speaker unit fixed bracket It provides a dual speaker, characterized in that rotatably installed at the bottom of.

In addition, the fixing bracket is composed of an upper bracket and a lower bracket, a ball bearing is installed between the upper bracket and the lower bracket provides a dual speaker characterized in that the lower bracket is configured to rotate.

In addition, one side of the tweeter housing is formed wide, and provides a dual speaker characterized in that it is formed in a funnel shape narrower toward the other side.

In addition, the treble speaker unit and treble speaker unit provides a dual speaker, characterized in that each is installed in the fixed bracket and tweeter housing so that sound can be transmitted in a different direction.

Hereinafter, the dual speaker according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a dual speaker according to the present invention, Figure 2 is a perspective view showing the configuration of a dual speaker according to the present invention, Figure 3 is a bottom perspective view showing a state in which the dual speaker according to the present invention is installed, Figure 4 FIG. 5 is a diagram illustrating a state in which sound is transmitted from a dual speaker according to the present invention, and FIG. 5 is a diagram illustrating a state in which sound is transmitted to a user through the dual speaker of the present invention.

1 to 5, the dual speaker according to the present invention includes a bass and speaker unit 10 and a treble speaker unit 20 for transmitting the bass and treble, respectively.

And the fixed bracket 30 of the 'ㅗ' shape is configured so that the bass speaker unit 10 and the treble speaker unit 20 can be installed on the ceiling.

The fixing bracket 30 includes an upper bracket 41 having a bottom open and a lower bracket 32 having an open top.

The upper bracket 41 has a first through hole (31a) is formed so as to penetrate from the top to the bottom so that the bass speaker unit 10 can be coupled, a plurality of fixing holes (31b) around the first hole (31a) is formed Is formed.

The lower bracket 32 is formed with a second through-hole 32a formed in the same manner as the first through-hole 31a so that the sound from the bass loudspeaker unit 10 installed in the upper bracket 31 can spread. It is rotatably attached to the 31.

In addition, a groove 33a is formed in a portion where the upper bracket 31 and the lower bracket 32 are coupled, and a ball bearing 33 is installed in the groove 33a so that the lower bracket 32 rotates on the upper bracket 31. Be sure to

In the fixing hole 31b formed in the upper bracket 31, a plurality of fixing bars 40 having bolt holes (not shown) formed at upper and lower ends thereof are fixed by bolts (not shown), and the upper portion of the fixing bar 40 is fixed. There is a support plate 41 formed with a plurality of coupling holes (41a) is fixed to the support bar 41 is fixed by a bolt (not shown).

In addition, the first bass 34 to protect the bass speaker unit 10 from foreign matter, and to have a beautiful appearance is pressed into the first through hole 31a of the upper bracket 31 is installed.

On the bottom of the lower bracket 32, one side is formed wide so that the treble speaker unit 20 can be installed, and the funnel-shaped tweeter housing 50 is gradually narrowed toward the other side, and the tweeter housing 50 of The unit installation hole 51 is formed so that the treble speaker unit 20 is located inside, and the sound discharging hole 52 is formed in the portion where the bass loudspeaker unit 10 is installed to smoothly transmit the low sound. Is formed.

The tweeter housing 50 is coupled to the lower bracket 32 of the fixed bracket 30 through a conventional coupling method, such as by welding or by bolting. The coupling method is different depending on the manufacturer's convenience. can do.

The treble speaker unit 20 is installed inside the tweeter housing 50, and the second network 54 is screwed to the tweeter housing 50 by a coupling ring 53 at one side where the treble speaker unit 20 is installed. It can be combined in a variety of ways, such as the method or the fitting method by the engaging projection, can be configured in various forms to facilitate the operation of the coupling method or manufacturer, and description thereof will be omitted.

The second mesh 54 is coupled to one side of the tweeter housing 50 may vary depending on the manufacturer's circumstances, such as a conventional bolt method, a screw coupling method, and a locking method by protrusions, which assemble and produce a speaker. Anyone skilled in the art can easily think that the description is omitted herein.

The dual speaker of the present invention configured as described above is installed on the ceiling, and a normal sound cable (not shown) is connected to each other so that sound is transmitted through the bass speaker unit 10 and the treble speaker unit 20.

When the sound signal applied from the sound device is applied to the bass speaker unit 10 and the treble speaker unit 20 through a cable, the bass speaker unit 10 and the treble speaker unit 20 is applied to the applied electric sound signal as a vibration In other words, a small wave is formed in the air to transmit sound.

Sound is transmitted through the bass speaker unit 10 installed in the fixed bracket 30 and the treble speaker unit 20 installed in the tweeter housing 50.

As shown in FIG. 4, the sound transmitted from the bass speaker unit 10 and the treble speaker unit 20 does not interfere with each other, which is an acoustic frequency according to the sound transmitted from the bass speaker unit 10. Calculate the angle of) in advance, calculate the angle of the sound frequency (周波) transmitted from the treble speaker unit 20 and configured to deviate from the treble speaker unit at that angle, and at the same time the sound transmitted from the treble speaker unit 20 It is hit against other members or walls to prevent the loss of sound.

By adjusting the angle of the sound that the low and high sound is sent out to prevent the interference of the sound by the low and high sounds, three-dimensional disturbance phenomena due to the sound interference does not occur.

In addition, the direction of the tweeter housing 50 of the plurality of dual speakers illustrated in FIG. 5 may be adjusted to determine a sound point.

Looking to adjust the direction of the tweeter housing 50, by holding the tweeter housing 50 installed on the lower bracket 32 of the fixed bracket 30 by hand or using a member such as a separate forceps.

When the tweeter housing 50 is held and turned to the left or right direction, the tweeter housing 50 is provided by a ball bearing 33 provided in the groove 33a formed between the upper bracket 31 and the lower bracket 32. ) Rotates with the lower bracket (32).

In other words, if the speaker is installed in a corner of the room, if the sound is emitted only in one direction, for example, in the forward direction, the sound hitting the wall may be reflected or the sound may be lost (absorbed by the wall). Although the sound is not transmitted, the dual speaker of the present invention can catch the sound point by adjusting the direction of the tweeter housing 50 even when installed in a corner of the room, so that the sound lost through the existing speaker is less than that of high quality. Sound can be provided.

As shown in Figure 5, the sound is transmitted to the center portion, that is, a lot of people sitting in the direction of the tweeter housing 50 of the dual speaker installed in the corner of the room, so that the loss of sound as much as possible to prevent high quality stereoscopic You can listen to the sound.

As mentioned above, the direction of the speaker installed in the tweeter housing 50 is adjusted according to the structure of the room to prevent the loss of sound as much as possible, and the bass and the treble are prevented from colliding with each other, thereby reducing the sound. It can deliver stereo sound.

The present invention has the effect of providing a high-quality sound while having a non-directional by making a speaker by using a metal material to enhance the three-dimensional effect by widening the limited listening range, that is, the visible hearing.

In addition, since the interference due to the frequency of the sound transmitted from each of the bass and treble speaker unit does not occur so that the offset range does not occur, there is an effect that can transmit a three-dimensional sound.

In addition, by configuring the tweeter to play the treble externally, there is an effect that can deliver a perfect treble to the listener.

In addition, it is possible to reinforce the rich switch and the high-pitched listening switch spot due to the wide visible range of the bass.

In addition, there is an effect that people can hear the correct stereo sound by moving from side to side to determine the point of the sound transmitted by the tweeter installed in the bottom of the housing.

Claims (5)

In the speaker, The fixing bracket 30 configured with the bass speaker unit 10 is fixed to the ceiling by bolts so that sound can be transmitted in different directions. Dual speaker, characterized in that the treble speaker unit 20 is configured to be rotatably installed on the bottom of the fixed bracket (30). The method of claim 1, The fixing bracket 30 is composed of an upper bracket 31 and a lower bracket 32, the groove 33a is formed between the upper bracket 31 and the lower bracket 32 to install a ball bearing 33 Dual speaker characterized in that the bracket (32) is configured to be rotated. The method of claim 1, The tweeter housing 50 is formed in a funnel shape to one side is formed to be wider and narrower toward the other side is installed in the lower bracket 32, characterized in that the dual speaker is installed to rotate in the left or right direction. The method of claim 1, Dual speakers, characterized in that the speaker unit 10 and the treble speaker unit 20 is installed in the fixed bracket 30 and the tweeter housing 50 so that sound can be transmitted in different directions. The method of claim 1, Dual speaker, characterized in that the sound transmitting hole 52 is formed between the tweeter housing 50 so that the bass sound can be transmitted.

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