KR102409711B1 - The cooling unit with sound pressure improvement function for speaker - Google Patents

Abstract

Embodiments of the present invention relate to a sound pressure improving heat dissipation device for a speaker that effectively radiates heat generated from a speaker and improves sound pressure. According to an embodiment of the present invention, in the sound pressure improvement heat dissipation device of a speaker including a top plate, a pole piece, and a permanent magnet positioned between the top plate and the pole piece, the top plate and the pole piece A sound pressure improvement heat dissipation device for a speaker is provided, comprising one or more heat sinks connected to at least one of the bottom plates included in the piece.

Description

Sound pressure improvement heat dissipation device for speakers

Embodiments of the present invention relate to a sound pressure improving heat dissipation device for a speaker that effectively dissipates heat generated from a speaker and improves sound pressure, and more particularly, an aluminum heat sink is applied to dissipate heat from the speaker and sound pressure using an additional magnet It relates to a sound pressure improvement heat dissipation device for a speaker for improving performance and life expectancy and sound pressure improvement according to a decrease in the temperature of a magnet, which is a speaker component, by performing an improvement function.

A speaker is a device that converts an electrical signal into voice energy through physical vibration. A current (electrical energy) flows through a voice coil wound around a voice coil former, and the generated magnetic field is generated by a permanent magnet. Interacting with the magnetic field formed, it alternately pushes and pulls the voice coil back and forth. At this time, the voice coil former on which the voice coil is wound is connected to the cone (diaphragm) of the speaker unit, and the cone moves back and forth rapidly to vibrate the air to generate sound. In this process, the copper voice coil applies current As it is received, heat is generated and this heat is transferred to the ambient air, top plate, permanent magnet, bobbin, bottom plate, etc. The structure of such a speaker is as shown in FIG. 1 .

Although the degree of permanent magnets varies depending on the magnet material, the magnetic force decreases as the temperature increases. When the temperature rises above a certain temperature, it loses its magnetism. The temperature coefficient of magnetic flux density of ferrite magnets, which is a universal material for permanent magnets, is -0.18%, which means that the magnetic flux density decreases by -0.18% for every 1 degree increase in magnet temperature. For example, if the magnet temperature rises by 100 degrees, the magnetic flux density decreases by 18%, which adversely affects the speaker's acoustic performance. In order to dissipate the heat of the magnet, a heat sink should be applied to reduce the temperature of the magnet to prevent deterioration of acoustic performance.

In order to dissipate the heat of the speaker, a speaker with a heat sink coupled to the bottom of the speaker has been released.

Korean Patent Publication No. 10-1517329 (published on April 27, 2015)

According to embodiments of the present invention, it is an object of the present invention to provide a sound pressure improvement heat dissipation device for a speaker in which heat dissipation performance is always maintained and the magnetic flux density of the speaker is increased.

Embodiments of the present invention are to provide a sound pressure improvement heat dissipation device for a speaker that reduces the temperature of the speaker component.

SUMMARY Embodiments of the present invention are directed to providing a sound pressure improving heat dissipation device for a speaker having an effect of improving the sound pressure performance as well as improving the durability and lifespan of the speaker.

According to an embodiment of the present invention, in the sound pressure improvement heat dissipation device of a speaker including a top plate, a pole piece, and a permanent magnet positioned between the top plate and the pole piece, the top plate and the pole piece A sound pressure improvement heat dissipation device for a speaker is provided, comprising one or more heat sinks connected to at least one of the bottom plates included in the piece.

The sound pressure improving heat dissipation device for the speaker includes: a first heat sink including a first heat dissipation fin and connected to the top plate; and a second heat sink including a second heat dissipation fin and connected to the bottom plate.

a first magnet positioned between the first heat sink and the top plate; and a second magnet positioned between the bottom plate and the second heat sink.

The sound pressure improving heat dissipation device for the speaker may include a third heat sink including a plurality of air holes, and the third heat sink may be connected to the top plate.

An auxiliary magnet positioned between the third heat sink and the top plate may be further included.

The sound pressure improving heat dissipation device for the speaker may include a fourth heat sink including a plurality of third heat dissipation fins, and the fourth heat sink may be connected to the bottom plate by an auxiliary magnet.

A portion of the fourth heat sink may be positioned between the bottom plate and the auxiliary magnet.

The auxiliary magnet may be positioned between the fourth heat sink and the bottom plate, and the third heat dissipation fin of the fourth heat sink may be formed as large as an area of the bottom plate.

The auxiliary magnet may be positioned between the fourth heat sink and the bottom plate, and the third heat dissipation fin of the fourth heat sink may be formed as much as an internal space of the auxiliary magnet.

In the embodiments of the present invention, heat generated from the voice coil finally moves to the bottom plate, heat is dissipated by the heat sink, and the magnetic flux density of the speaker may increase due to the added magnet.

Embodiments of the present invention may reduce the temperature of the speaker voice coil, the top plate, the magnet, and the bottom plate.

Embodiments of the present invention can promote the effect of improving the sound pressure performance as well as improving the durability and lifespan of the speaker.

1 is a view showing the shape of a conventional speaker;
2 is a front view of a sound pressure improvement heat dissipation device for a speaker according to a first embodiment of the present invention;
3 is an exploded view of a sound pressure improving heat dissipation device for a speaker according to a first embodiment of the present invention;
4 is a plan view of a heat dissipation device for improving sound pressure for a speaker according to a first embodiment of the present invention;
5 is a bottom view of a heat dissipation device for improving sound pressure for a speaker according to a first embodiment of the present invention;
6 is a front view of a sound pressure improving heat dissipation device for a speaker according to a first embodiment of the present invention;
7 is a view showing an example of use of the sound pressure improving heat dissipation device for a speaker according to the first embodiment of the present invention;
8 is an upper and lower perspective view of a sound pressure improving heat dissipation device for a speaker according to a second embodiment of the present invention;
9 is a cross-sectional view of a sound pressure improving heat dissipation device for a speaker according to a second embodiment of the present invention;
10 is a view showing an example of use of a sound pressure improving heat dissipation device for a speaker according to a second embodiment of the present invention;
11 is a view showing an example of use of a sound pressure improving heat dissipation device for a speaker according to a third embodiment of the present invention;
12 is a view showing an example of use of a sound pressure improving heat dissipation device for a speaker according to a fourth embodiment of the present invention;
13 is a view showing an example of use of a sound pressure improving heat dissipation device for a speaker according to a fifth embodiment of the present invention;

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, this is merely an example, and the present invention is not limited thereto.

In the description of the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted. And, the terms to be described later are terms defined in consideration of functions in the present invention, which may vary according to intentions or customs of users and operators. Therefore, the definition should be made based on the content throughout this specification.

The technical spirit of the present invention is determined by the claims, and the following examples are only one means for efficiently explaining the technical spirit of the present invention to those of ordinary skill in the art to which the present invention pertains.

2 is a front view of a sound pressure improving heat dissipation device for a speaker according to a first embodiment of the present invention, FIG. 3 is an exploded view of a sound pressure improving heat dissipating device for a speaker according to the first exemplary embodiment of the present invention, and FIG. 4 is a first embodiment of the present invention A top plan view of the sound pressure improving heat dissipation device for a speaker according to the first embodiment, FIG. 5 is a bottom view of the sound pressure improving heat dissipating device for a speaker according to the first exemplary embodiment of the present invention, and FIG. 6 is a speaker according to the first exemplary embodiment of the present invention 7 is a front view of a sound pressure improving heat dissipation device for a speaker, and FIG. 7 is a view showing an example of use of the sound pressure improving heat dissipating device for a speaker according to the first embodiment of the present invention.

Referring to the drawings, in the first embodiment of the present invention, the bolt fastening between the first heat sink 13 coupled to the frame 6 and the second heat sink 14 positioned under the bottom plate 5a is provided. In this way, the inside of each heat sink may be a sound pressure improvement heat dissipation device in which the first magnet 11 and the second magnet 12 are respectively coupled.

A top plate 3, a permanent magnet 4, and a pole piece 5 with a first heat sink 13 and a second heat sink 14 having a first magnet 11 and a second magnet 12 mounted therein ), the external surfaces of the speaker parts are in contact with the inner surfaces of the heat sinks 13 and 14, respectively, so that the heat generated by the voice coil 2 can be effectively dissipated to the outside. At this time, it is possible to reduce the overall temperature of the speaker, to prevent the performance degradation of the permanent magnet 4, and to improve the performance and durability by the additional magnet.

In the heat dissipation device 100, the aluminum first heat sink 13 is formed of a first magnet 11, a top plate 3, a permanent magnet 4, and a bottom plate 5a of the pole piece 5 in order to dissipate heat from the speaker. ), the outer surface of the first heat sink 13 is composed of a first heat dissipation fin 13d, and the upper portion of the heat sink base 13a may be coupled to the frame 6 . At the lower end of the bottom plate 5a, the second heatsink 14 surrounding the second magnet 12 is in contact with thermal grease, and the first heatsink 13 and the second heatsink 14 are connected with a bolt 15. can be concluded A second heat dissipation fin 14c may be arranged on a lower end surface of the second heat sink 14 .

According to this, all surfaces of the speaker core parts are wrapped with the heat sinks 13 and 14, and the heat generated in the voice coil 2 may finally flow to the heat sinks 13 and 14 to be radiated to the outside air. As a result, it is possible to effectively remove heat, thereby improving the durability and lifespan of the voice coil 2 and the permanent magnet 4 and improving the performance of the speaker.

In addition, in the heat dissipation device 100, the first magnet 11 and the second magnet 12 are additionally mounted on the upper and lower portions to improve the magnetic performance of the speaker permanent magnet 4 to increase the sound pressure.

Specifically, FIG. 2 is an exploded view of the heat dissipation device 100 and includes a first heat sink 13 , a second heat sink 14 , a first magnet 11 , a second magnet 12 , and a bolt 15 . and the first magnet 11 and the second magnet 12 are mounted inside each of the first heat sink 13 and the second heat sink 14, and the first magnet 11 and the second magnet 12 A top plate (3), a permanent magnet (4), and a pole piece (5), which are speaker parts, are mounted in order between the first and second heat sinks (13) and the second heat sink (14) with simple bolts (15). can be contracted. The first magnet 11 and the second magnet 12 may increase the sound pressure by improving the magnetic performance of the speaker permanent magnet 4 . The heat emitted by applying a current to the voice coil 2 is moved to the first heat dissipation fin 13d of the first heat sink 13 and the second heat dissipation fin 14c of the second heat sink 14 to finally radiate heat to the outside. As a result, it is possible to reduce the overall temperature of the speaker, prevent the performance degradation of the permanent magnet 4, and improve performance and durability by additional magnets.

Referring to FIG. 6 , the upper portion of the base portion 13a of the first heat sink 13 may be in contact with the lower portion of the frame 6 to be bolted. According to FIG. 7, in the speaker structure to which the heat dissipation device 100 is applied, the first magnet 11 and the second magnet 12 by the first magnet 11 and the second magnet 12 and between the permanent magnet 4 A magnetic field flow is formed, and a magnetic force line is formed densely than the conventional magnetic field flow, so that a greater force can be applied to the voice coil 2 . At this time, the heat emitted from the voice coil 2 is moved to the first heat dissipation fin 13d of the first heat sink 13 and the second heat dissipation fin 14c of the second heat sink 14 to be finally radiated to the outside. have. A portion of the heat may be transferred to the internal air and the pole 5b and radiated through the air hole 10 .

8 is an upper and lower perspective view of a sound pressure improving heat dissipation device for a speaker according to a second embodiment of the present invention, FIG. 9 is a cross-sectional view of a sound pressure improving heat dissipating device for a speaker according to a second exemplary embodiment of the present invention, and FIG. It is a view showing an example of use of a sound pressure improving heat dissipation device for a speaker according to a second embodiment of the present invention.

8 to 10 , the sound pressure improving heat dissipation device for a speaker according to the second embodiment is mounted between the frame 6 and the top plate 3 to discharge internal heat to the outside through the internal air hole 16a. A third heat sink 16 may be included.

In the heat dissipation device according to the second embodiment, the heat emitted from the voice coil 2 naturally flows through the air hole 16a of the third heat sink 16 according to the motion of the bobbin 1 and the damper 7 . By effectively dissipating heat to the outside, heat dissipation effect and durability can be improved.

The present heat dissipation device may induce heat emitted from the voice coil 2 to be discharged to the outside through the plurality of air holes 16a of the third heat sink 16 . It is also possible to add an auxiliary magnet between the third heat sink 16 and the top plate 3 . In addition, the sound pressure improvement effect can be achieved by adding the configurations according to the following third to fifth embodiments to the present heat dissipation device.

8 and 9 , the heat emitted from the voice coil 2 naturally flows through the air hole 16a of the third heat sink 16 according to the motion of the bobbin 1 and the damper 7 and effectively may be emitted outside. In this case, the speaker may be provided with a dust guard 16b to prevent foreign substances such as surrounding dust from entering.

According to FIG. 10 , the heat emitted from the voice coil 2 can be naturally radiated to the outside through the air hole 16a of the third heat sink 16 according to the movement of the bobbin 1 and the damper 7 . have.

11 is a view showing an example of use of a sound pressure improving heat dissipation device for a speaker according to a third embodiment of the present invention, and FIG. 12 is a view showing an example of use of a sound pressure improving heat dissipating device for a speaker according to a fourth exemplary embodiment 13 is a view showing an example of use of a sound pressure improving heat dissipation device for a speaker according to a fifth embodiment of the present invention.

11 to 13, in the third, fourth and fifth embodiments of the present invention, the fourth heat sinks 17, 18, 19) can be installed. The fourth heat sinks 17 , 18 , and 19 may derive an additional effect of improving sound pressure as well as a heat dissipation effect.

The third embodiment, the fourth embodiment, and the fifth embodiment combine the heat sinks 17, 18, 19 and the auxiliary magnet 12 and mount them on the bottom plate 5a. In addition to the basic heat dissipation effect, additional magnets It is also possible to improve the performance of the permanent magnet (4) due to.

The shape and size of the heat sink can be designed in various ways according to the shape of the speaker component and the required heat dissipation performance, and the shape and arrangement of additional magnets can be applied in various ways.

As in the above embodiments, by adding an auxiliary magnet between the third heat sink 16 and the top plate 3 or by combining the fourth heat sink 17, 18, 19 and the auxiliary magnet 12, the bottom plate When installed in (5a), not only the heat dissipation effect, but also the magnetic properties of the additionally mounted magnet change the magnetic force line of the speaker permanent magnet 4 densely and increase the magnetic flux density, thereby improving the sound pressure.

11 is an embodiment of the fourth heat sink 17 according to the third embodiment, wherein the fourth heat sink 17 is fixed using the auxiliary magnet 12 and the auxiliary magnet 12 is a speaker permanent magnet ( 4) improves the sound pressure performance by increasing the magnetic flux density of the speaker, and the heat of the speaker is transferred to the fourth heat sink 17 and is radiated through the third heat dissipation fin 17a to reduce the overall temperature of the speaker component, thereby preventing deterioration of the magnet and It can contribute to the improvement of durability.

The embodiment of the fourth heat sink 18 according to the fourth embodiment of FIG. 12 and the embodiment of the fourth heat sink 19 according to the fifth embodiment of FIG. 13 are also the auxiliary magnet 12 and the heat sink 18 , 19) and it is possible to improve sound pressure performance and heat dissipation effect by the auxiliary magnet 12 .

Although the example of fastening and coupling between parts with bolts is exemplified in the above, the present invention is not limited thereto, and may be combined using a special-purpose adhesive. In addition, in the case of the additionally mounted first magnet, the second magnet and the auxiliary magnet, it is optimal to use an ND magnet having a high magnetic flux density and a grade having a high operating temperature range, but a ferrite-based magnet is also applicable depending on the situation. All types of heat sink can be applied such as applying only a heat sink, applying only an additional magnet, or applying two or more additional magnets overlapping each other. An important point here is that the polarity according to the mounting direction of the additionally mounted magnet must be the same as the polarity of the side facing the permanent magnet, so that the sound pressure can be improved by the additional magnet.

Although the present invention has been described in detail through representative embodiments above, those of ordinary skill in the art to which the present invention pertains can make various modifications to the above-described embodiments without departing from the scope of the present invention. will understand Therefore, the scope of the present invention should not be limited to the described embodiments, but should be defined by the claims described below as well as the claims and equivalents.

1: Bobbin
2: Voice Coil
3: Top plate
4: Permanent magnet (Magnet)
5: Pole piece
5a: bottom plate
5b: Pole
6: Frame
7: Damper
8: Dust Cap
9: Cone Paper
10: Air Hole
11: first magnet
12: second magnet
13: first heat sink
13a: first heat sink base part
13b: frame fastening hole
13c: first heat sink fastening part
13d: first heat dissipation fin
14: second heat sink
14a: second heat sink base part
14b: second heat sink fastening part
14c: second heat dissipation fin
15 : bolt
16: third heat sink
16a: Air Hole
16b : Dust Guard
17: fourth heat sink
17a: third heat dissipation fin
18: fourth heat sink
17b: third heat dissipation fin
19: 4th heat sink
19b: third heat sink fin
100: heat dissipation device

Claims (9)

A sound pressure improvement heat dissipation device for a speaker comprising a top plate, a pole piece, a permanent magnet positioned between the top plate and the pole piece, and a bottom plate included in the pole piece,
a first heat sink connected to the top plate and including a first heat dissipation fin; and
a second heat sink connected to the bottom plate and including a second heat dissipation fin;
includes,
A sound pressure improvement heat dissipation device for a speaker, further comprising at least one of a first magnet positioned between the first heat sink and the top plate, and a second magnet positioned between the bottom plate and the second heat sink.
delete delete The method according to claim 1,
The sound pressure improvement heat dissipation device for the speaker,
A third heat sink including a plurality of air holes,
and the third heat sink is connected to the top plate.
5. The method according to claim 4,
Further comprising an auxiliary magnet positioned between the third heat sink and the top plate, a sound pressure improvement heat dissipation device for a speaker.
Comprising one or more heat sinks connected to at least one of a top plate, a pole piece, a permanent magnet positioned between the top plate and the pole piece, and a bottom plate included in the top plate and the pole piece, As a sound pressure improvement heat dissipation device for a speaker,
The sound pressure improvement heat dissipation device for the speaker,
a fourth heat sink including a plurality of third heat dissipation fins;
The fourth heat sink is connected to the bottom plate by an auxiliary magnet, a sound pressure improving heat dissipation device for a speaker.
7. The method of claim 6,
A portion of the fourth heat sink is located between the bottom plate and the auxiliary magnet, a sound pressure improving heat dissipation device for a speaker.
7. The method of claim 6,
The auxiliary magnet is positioned between the fourth heat sink and the bottom plate,
The third heat dissipation fin of the fourth heat sink is formed as much as an area of the bottom plate.
7. The method of claim 6,
The auxiliary magnet is positioned between the fourth heat sink and the bottom plate,
The third heat dissipation fin of the fourth heat sink is formed as much as an inner space of the auxiliary magnet, a sound pressure improving heat dissipation device for a speaker.

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