KR101559658B1

KR101559658B1 - Speaker appartus

Info

Publication number: KR101559658B1
Application number: KR1020140030966A
Authority: KR
Inventors: 이광희
Original assignee: 이광희
Priority date: 2014-03-17
Filing date: 2014-03-17
Publication date: 2015-10-13
Also published as: WO2015141983A1; KR20150108146A; CN206577396U

Abstract

The present invention relates to a speaker device. A speaker device according to the present invention includes a speaker cabinet formed with openings at positions mutually opposed to each other, the speaker cabinet being formed with openings at positions mutually opposed to each other on the left side face and the right side face, A second speaker driver installed rearward from a rear opening of the speaker cabinet, and first and second passive radiators installed symmetrically to the left and right side openings of the speaker cabinet. According to the present invention, since the structure is simple and can have a low resonance point even if it is miniaturized according to the weight of two passive radiators, it is possible to provide a speaker device capable of reproducing a wide frequency band and downsizing.

Description

Speaker device {Speaker appartus}

The present invention relates to a speaker device, and more particularly, to a speaker device using a pair of speaker drivers and two passive radiators.

A speaker or speaker device is an electromechanical transducer that converts electrical signals into sound. The loudspeaker can be classified into a horn type, a corn type, and the like depending on the form, and can be classified into a dynamic type, a magnetic type, a condenser type, and a crystal type according to the driving principle.

Speakers can be categorized according to the frequency of the sound generated. High-frequency sounds have a short wavelength and low-frequency sounds have a long wavelength. Generally speaking, a small-sized speaker is advantageous for reproduction of high- A large-sized speaker is advantageous for reproducing sound.

Therefore, if a speaker device can reproduce a wide-band sound in spite of its small size, it will be possible to reproduce a grand scale sound even at a small volume by connecting with various types of playback devices such as a mobile phone or a tablet computer.

Generally, to create a wide frequency reproduction band, the IC design, or DSP (Digital Signal Processor) in the amplifier, can raise the efficiency value in a specific frequency band to produce low frequency bass. However, it is difficult to expand the average sound pressure level to the desired frequency if the response frequency value is too low or too low in the frequency band for which the efficiency value is to be increased, which is lower than the limit value that the IC can amplify.

In recent years, products have been introduced that use broadband speakers using a passive radiator. The passive radiator operates in correspondence with the air pressure inside the speaker cabinet in which the diaphragm is changed by the movement of the woofer instead of the low sound-reflection type port. However, since the speaker device to which the passive radiator is applied is expensive, it is a structure that is complicated in structure and requires a minimum space, so that it is difficult to miniaturize and carry it.

Therefore, it is necessary to consider a speaker device having a small-sized speaker which is convenient to carry and has excellent sound field.

An object of the present invention is to provide a speaker device which is small in size and easy to carry while having excellent sound field.

According to an aspect of the present invention, there is provided a speaker device comprising: a speaker cabinet having an opening formed at a position facing a front surface and a rear surface facing each other, the speaker cabinet having an opening at a position opposite to the left and right sides; A second speaker driver installed rearward from the rear opening of the speaker cabinet, and a second speaker driver installed to the left and right openings of the speaker cabinet, And a second passive radiator.

The passive radiator may have a shape in which the center portion is convex outwardly, and a metal material may be used.

The first speaker driver may further include an acoustic duct for guiding acoustic energy radiated from the first and second speaker drivers to the first passive radiator and the second passive radiator, A first acoustic duct for guiding energy to the first and second passive radiators and a second acoustic duct for guiding the acoustic energy radiated from the second speaker driver to the first passive radiator and the second passive radiator, .

According to the present invention, since a pair of speaker drivers are disposed in opposite directions to each other and two passive radiators are used to vibrate the two passive radiators until the acoustic energy radiated to the rear surface of the speaker driver disappears, energy efficiency is excellent , The acoustic energy is radiated to the front, rear, left, and right sides of the speaker device, so that a sound field similar to an actual performance stage can be provided. Further, even if the structure is simple and small according to the weight of the two passive radiators, it can have a low resonance point, so that it is possible to provide a speaker device capable of reproducing a wide frequency band and miniaturizing it.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a speaker device according to an embodiment of the present invention;
2 is a front view of a speaker device according to an embodiment of the present invention;
3 is a side view of a speaker device according to an embodiment of the present invention, and
4 is a bottom plan view of a speaker device according to an embodiment of the present invention.

Hereinafter, the present invention will be described in detail with reference to the drawings.

2 is a front view of a speaker according to an embodiment of the present invention. FIG. 3 is a side view of a speaker device according to an embodiment of the present invention. 4 is a bottom projection view of a speaker device according to an embodiment of the present invention.

Referring to FIGS. 1 to 4, the speaker device according to the present invention will be described in terms of components according to the outline of the speaker device.

The speaker device 100 includes a speaker cabinet 110 formed with openings at positions opposite to each other on the front and rear surfaces, openings formed at positions facing each other on the left and right sides, a front surface of the speaker cabinet 110, A second speaker driver 125 installed rearward from a rear opening of the speaker cabinet 110 and a second speaker driver 125 installed to face the left and right side openings of the speaker cabinet 110, And first and second passive radiators 130 and 135 installed symmetrically to the first and second passive radiators 130 and 135. .

The speaker drivers 120 and 125 are installed in pairs facing each other in the opposite direction, and may be formed of one or more pairs.

Acoustic ducts 140 and 145 are installed in the speaker cabinet 110 to guide the first and second speaker drivers 120 and 125 to the first and second passive radiators 130 and 135 have. The acoustic ducts 140 and 145 include a first acoustic duct 140 for guiding the acoustic energy radiated from the first speaker driver 120 to the first and second passive radiators 130 and 135, And a second acoustic duct 145 for guiding the acoustic energy radiated from the first passive radiator 125 to the first passive radiator 130 and the second passive radiator 135.

The first and second passive radiators 130 and 135 installed on the left and right sides of the speaker cabinet 110 are convex toward the center and have a depth decreasing from the center to the periphery.

Passive radiators 130 and 135 are auxiliary speaker generators, also referred to as auxiliary bass radiators (ABRs), which are flat speaker units without a voice coil or a magnetic structure. By itself, the speaker produces an amplitude There is no number. However, the passive radiators 130 and 135 operate in response to the air pressure inside the speaker cabinet 110, which is changed by the movement of the speaker drivers 120 and 125 in place of the diaphragm-type ports. That is, the passive radiators 130 and 135 use the resonance of the vibration system. The passive radiators 130 and 135 smooth the peaks that may occur in the response of the loudspeaker and eliminate the wind noise of the potted system and the resonance phenomenon occurring in the port.

The resonance of unnecessary reverberation frequencies can be reduced due to the convex internal structure of the passive radiators 130 and 135 installed on the left and right sides of the speaker cabinet 110. [ In addition, in the case of playing in a pocket, the vibration of the passive radiators 130 and 135 can be felt, and the user can enjoy the feeling of vibration in addition to listening.

The speaker device 100 having such a structure is a dual passive radiator type in which the first and second speaker drivers 120 and 125 are arranged in opposite directions to each other, (100) does not rock.

Since the first and second passive radiators 130 and 135 are vibrated until the acoustic energy radiated to the rear surfaces of the first and second speaker drivers 120 and 125 disappears, So that a sound field similar to an actual performance stage can be provided.

Also, the passive radiators 130 and 135 can be made heavier than the speaker drivers 120 and 125 by using a metal material or the like. Accordingly, even though the structure is relatively simple and can be reduced according to the weight of the two passive radiators 130 and 135, it can have a low resonance point, so that it is possible to miniaturize and reproduce a wide frequency band.

The speaker device 100 according to the present invention may be configured to output the same acoustic signal as the first speaker driver 120 and the second speaker driver 125 or to output different acoustic signals such as stereo L and R, And outputs a signal. If the first speaker driver 120 and the second speaker driver 125 are configured to output the same sound signal, stereo sound output can be made possible using the two speaker devices 100.

It should be noted that the speaker device according to the present invention is not limited to the configuration of the embodiments described above, but the embodiments described above may be modified such that all or some of the embodiments are selectively combined .

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It should be understood that various modifications may be made by those skilled in the art without departing from the spirit and scope of the present invention.

110: speaker cabinet 120: first speaker driver
125: second speaker driver 130: first passive radiator
135: second passive radiator 140: first acoustic duct
145: Second acoustic duct

Claims

Wherein the front surface and the rear surface have a flat rectangular parallelepiped shape in which the area of the front surface and the rear surface is smaller than the area of the left surface and the right surface and openings are formed at positions mutually opposed to each other between the front surface and the rear surface, A speaker cabinet formed;
A first speaker driver installed forward from a front opening of the speaker cabinet;
A second speaker driver installed rearward from a rear opening of the speaker cabinet;
First and second passive radiators installed symmetrically on a left side face opening and a right side face opening of the speaker cabinet;
A first acoustic duct for guiding sound energy radiated from the first speaker driver to the first passive radiator and the second passive radiator; And
And a second acoustic duct for directing the acoustic energy radiated from the second speaker driver to the first passive radiator and the second passive radiator,
Wherein the first and second speaker drivers are capable of outputting the same acoustic signals or outputting different acoustic signals, respectively.

The method according to claim 1,
Wherein the passive radiator has a shape in which the center portion is convex in the outward direction.

The method according to claim 1,
Wherein the passive radiator is made of a metal material.

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