KR101870211B1 - Panel excitation type speaker - Google Patents

Abstract

A panel excitation type speaker is disclosed. In the panel excitation type speaker according to the present invention, a bobbin of an exciter is formed with an elliptical shape. Since there is not a planar part on the bobbin, the plate vibration of the bobbin is not generated when a voice coil vibrates. Therefore, the plate vibration of the bobbin can be prevented, thereby improving sound quality. Since there is not the planar part on the bobbin, a pressing process for forming the planar part of the bobbin is not necessary. Therefore, the manufacturing process of the bobbin is simple, thereby reducing costs.

Description

Panel-type speaker {PANEL EXCITATION TYPE SPEAKER}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a panel-type speaker for reproducing sound by vibrating a panel.

Speaker is an acoustic device that converts electrical signals into vibrations of a diaphragm to create a compact wave in the air to radiate sound waves.

The dynamic speaker includes a frame, a magnetic circuit provided in the frame and generating a magnetic force, and an acoustic generator installed in the frame and having a diaphragm for vibrating while vibrating in response to the magnetic circuit. The dynamic type speaker requires a space corresponding to the amplitude of the sound generating portion, and thus it is limited to be installed in a thin flat display device.

In order to solve the above problems, a speaker with a panel having a panel mounted on a panel of a flat panel display and vibrating the panel to reproduce sound has been developed and used.

Since the speaker with the panel-type speaker vibrates the panel on which the image is displayed to reproduce the sound, the flat panel display provided with the speaker with the panel-type speaker improves the sense of three-dimensional sound of the sound.

2. Description of the Related Art [0002] In general, a speaker with a panel is a speaker mounted on a panel of a flat panel display, a magnetic circuit provided on the frame and generating magnetic force, and an exciter Exciter.

The magnetic circuit includes a yoke coupled to the frame, a magnet and a pole piece sequentially stacked in the yoke, and the exciter includes a bobbin and a voice coil having a coil wound on one outer circumferential surface of the bobbin .

A ring-shaped cap is coupled to the other end surface of the bobbin, one surface of the bonding member is bonded to the cap, and the other surface of the bonding member is bonded to the panel.

Thus, when an electric signal is applied to the coil, the voice coil is vibrated by the action of the magnetic circuit and the coil, and the panel vibrates and reproduces sound by the vibration of the voice coil.

In response to a flat panel display device which is thinned or slimmed, a speaker with a panel must also be thinned or slimmed.

1, the bobbin 11 of the voice coil 10 is formed in a track shape and a coil 13 is formed on the outer peripheral surface of the lower portion of the bobbin 11, A wound exciter has been developed and used.

However, since the bobbin 11 of the exciter is formed in a track shape, the bobbin 11 has a straight portion and the straight portion forms a flat portion 11a .

Then, when the voice coil 10 vibrates up and down, the planar portion 11a of the bobbin 11 is plate-oscillated, so that the sound quality is deteriorated.

When the bobbin 11 has a track shape, a process of pressing the bobbin 11 for flatness of the flat portion 11a of the bobbin 11 is required, which is disadvantageous in that the manufacturing process is complicated and the cost increases .

Prior art relating to a panel-type speaker is disclosed in Korean Patent Laid-Open No. 10-2009-0039372 (April 22, 2009).

It is an object of the present invention to provide a panel-excited speaker capable of solving all the problems of the related art as described above.

Another object of the present invention is to provide a speaker with a panel with a built-in speaker capable of not only improving the sound quality but also reducing the cost.

A speaker with a panel structure according to an embodiment of the present invention includes: a frame supported on a panel side; A magnetic circuit installed in the frame and generating a magnetic force; And a voice coil having one end surface connected to the panel and the other end having a bobbin positioned on the magnetic circuit side and a coil wound on an outer circumferential surface on the other side of the bobbin, And an exciter for vibrating the panel while vibrating in response to the circuit part, wherein the bobbin may be formed in an elliptical shape.

In the panel-excited speaker according to the present embodiment, the bobbin of the exciter is formed in an oval shape. Then, since there is no flat portion on the bobbin, the bobbin does not vibrate when the voice coil vibrates. Therefore, plate vibration of the bobbin can be prevented, and sound quality can be improved.

Since there is no flat portion on the bobbin, a pressing process for forming the flat portion of the bobbin is not required. Therefore, the manufacturing process of the bobbin is simple and the cost can be reduced.

1 is a perspective view of a voice coil of an exciter of a conventional panel-excited speaker;
2 is a perspective view of a speaker having a panel structure according to an embodiment of the present invention;
3 is an exploded perspective view of Fig.
4 is a plan view of the bobbin shown in Fig.

It should be noted that, in the specification of the present invention, the same reference numerals as in the drawings denote the same elements, but they are numbered as much as possible even if they are shown in different drawings.

Meanwhile, the meaning of the terms described in the present specification should be understood as follows.

The word " first, "" second," and the like, used to distinguish one element from another, are to be understood to include plural representations unless the context clearly dictates otherwise. The scope of the right should not be limited by these terms.

It should be understood that the terms "comprises" or "having" does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or combinations thereof.

It should be understood that the term "at least one" includes all possible combinations from one or more related items. For example, the meaning of "at least one of the first item, the second item and the third item" means not only the first item, the second item or the third item, but also the second item and the second item among the first item, Means any combination of items that can be presented from more than one.

It should be understood that the term "and / or" includes all possible combinations from one or more related items. For example, the meaning of "first item, second item and / or third item" may include not only the first item, the second item or the third item but also two of the first item, Means a combination of all items that can be presented from the above.

It is to be understood that when an element is referred to as being "connected or installed" to another element, it may be directly connected or installed with the other element, although other elements may be present in between. On the other hand, when an element is referred to as being "directly connected or installed" to another element, it should be understood that there are no other elements in between. On the other hand, other expressions that describe the relationship between components, such as "between" and "between" or "neighboring to" and "directly adjacent to" should be interpreted as well.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a speaker with a panel structure according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 2 is a perspective view of a speaker having a panel structure according to an embodiment of the present invention, FIG. 3 is an exploded perspective view of FIG. 2, and FIG. 4 is a plan view of the bobbin shown in FIG.

As shown in the figure, the speaker with a panel structure according to the present embodiment may include a frame 110, a magnetic circuit 130 provided in the frame 110, and an exciter 150 installed in the frame 110 have.

Hereinafter, referring to the face of other components including the frame 110, the face of the flat panel display device facing the panel P is referred to as "front face ", and the face facing in the opposite direction is referred to as" rear face ".

The frame 110 may be formed of a synthetic resin material, and the space portion 111 may be formed at a center portion thereof. Then, the frame 110 can be coupled and supported on the rear surface side of the panel P of the flat panel display. More specifically, a coupling hole 113 may be formed on the corner of the frame 110, and a boss may be formed on the rear surface of the panel P. Thus, when the coupling member 121 passes through the coupling hole 113 and is coupled to the boss, the frame 110 can be coupled and supported to the panel P.

The magnetic circuit unit 130 may generate a magnetic force and may include a yoke 131, a magnet 133, and a plate 135.

The yoke 131 may be formed in a U-shape with the front surface thereof opened, and may be inserted and supported in the space portion 111 of the frame 110. The yoke 131 may be formed of a metal material and the rear side portion of the yoke 131 may protrude to the rear side of the frame 110.

The magnet 133 can be installed inside the yoke 131 and the plate 135 can be installed in the magnet 133 and positioned inside the yoke 131. At this time, a gap may be formed between the inner circumferential surface of the yoke 131 and the outer circumferential surface of the magnet 133, and between the inner circumferential surface of the yoke 131 and the outer circumferential surface of the plate 135.

The exciter 150 can act in the direction of the rear face from the front face of the panel P and the front face direction from the rear face by acting with the magnetic circuit part 130 and includes the voice coil 151 and the damper 155 can do.

The voice coil 151 may include a bobbin 151a and a coil 151b. The front end side of the bobbin 151a can be positioned on the panel P side and can be coupled to the panel P side and the rear end side can be positioned in the gap of the magnetic circuit portion 130 have. Then, the coil 151b can be wound on the outer peripheral surface of the rear end surface side portion of the bobbin 151a.

When the electric signal including the sound signal is supplied to the coil 151b, the voice coil 151 is moved in the direction from the front surface to the rear surface of the panel P by the action of the coil 151b and the magnetic circuit unit 130, And vibrate in the direction from the rear surface to the front surface, thereby causing the panel P to vibrate and reproduce the sound.

It is a matter of course that the direction from the front face to the rear face of the panel P and the direction from the rear face to the front face are the same direction as the thickness direction of the panel P. [

The damper 155 may be formed in a ring shape so that the outer peripheral side is supported by the frame 110 and the inner peripheral side is bonded to the outer peripheral surface of the bobbin 151b. The damper 155 can prevent the voice coil 151 from flowing in the width direction of the panel P perpendicular to the thickness direction of the panel P. [

A cap 160 and an adhesive member 170 may be provided to join the front end surface of the bobbin 151a facing the panel P to the panel P. [

The cap 160 may be formed in a ring shape and coupled to the front end surface of the bobbin 151a. The back surface of the adhesive member 170 may be adhered to the front surface of the cap 160, and the front surface of the adhesive member 170 may be adhered to the panel P. Since the cap 160 is coupled to the panel P via the adhesive member 170 and the bobbin 151a is coupled to the panel P via the cap 160, the vibration of the voice coil 151 Is transmitted to the panel P, and the sound is reproduced while the panel P vibrates.

A support rib 162 may be formed inside the cap 160 to support the cap 160 and to adhere the adhesive member 170 to the cap 160 in order to improve the adhesion between the cap 160 and the adhesive member 170. [ have. This increases the bonding area between the cap 160 and the adhesive member 170, so that the cap 160 and the adhesive member 170 can be firmly adhered to each other. At this time, the support rib 162 may be formed in a straight shape or a cross shape.

When the panel P of the flat panel display device on which the image is displayed vibrates and reproduces the sound, the sense of depth of sound can be improved.

The speaker with a panel structure according to the present embodiment can prevent plate vibration of the bobbin 151a when the voice coil 151 vibrates, thereby improving sound quality.

In detail, the bobbin 151a may have an elliptical shape in plan view. Then, since the bobbin 151a does not have a flat portion, the bobbin 151a does not vibrate when the voice coil 151 vibrates. Therefore, the sound quality can be improved.

When the length of the minor axis of the bobbin 151a is L1 and the length of the major axis is L2, it is preferable that L1: L2 = 1: 1.3 to 2.0.

The bobbin 151a of the exciter 150 is formed in an oval shape. Then, since there is no plane portion on the bobbin 151a, the bobbin 151a does not vibrate when the voice coil 151 vibrates. Therefore, plate vibration of the bobbin 151a is prevented, and sound quality can be improved.

Since there is no flat portion on the bobbin 151a, a pressing process for forming the flat portion of the bobbin 151a is not required. Therefore, the manufacturing process of the bobbin 151a is simple, and the cost can be reduced.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Will be clear to those who have knowledge of. Therefore, the scope of the present invention is defined by the appended claims, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention.

110: frame
130: Magnetic circuit
150: Exciter
160: Cap (Cap)
170: Adhesive member

Claims (3)

A frame supported on the panel side;
A magnetic circuit installed in the frame and generating a magnetic force;
One end surface side of which is coupled to the panel and the other side of which is a elliptical bobbin positioned on the magnetic circuit side and a voice coil having a coil wound on the outer circumferential surface of the other side of the bobbin, An exciter for vibrating the panel while vibrating in response to the magnetic circuit;
A ring-shaped cap (Cap) coupled to one end surface of the bobbin;
And an adhesive member to which the one surface and the other surface are adhered to the cap and the panel, respectively,
And a support rib for supporting the cap and to which one surface of the adhesive member is adhered is formed inside the cap. delete delete

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