KR102215716B1 - Panel with sound reproduction - Google Patents

Abstract

The present invention relates to a panel with sound reproduction function including: an acoustic panel attached to a wall interior material; an actuator configured on a rear surface of the acoustic panel; and an audio unit which drives the actuator. According to the present invention, sound having no difference in sound level for each location according to a distance is reproduced.

Description

Panel with sound reproduction

The present invention relates to a panel having a sound reproduction function.

9 shows a panel-type loudspeaker implementing the invention as a background, a distribution mode panel 20 in which a large low frequency is most effectively utilized, a panel 22 in which a small high frequency formed in the area of the driver 24 is most effectively utilized. It is transformed by having

The common driving point of the actuator 24 means that both parts or regions of the panel are excited.

A small high-frequency part or region of the panel is provided with a special rigidity of the localized skin region 26, for example by adding a bonded carbon fiber, glass fiber or similar high-strength material, or by adding a new high-stiffness skin cross section to that region. have.

A natural balance of frequency and power distribution is obtained according to the propagation characteristics of the waveform of the large panel 20.

In addition, a suitable compliant boundary 28 is combined to make a distinction between the high-frequency and low-frequency portions of the panel.

Control of the compliance frequency attenuates the amplitude of the resilient coupling and allows an ideal and desirable intersection point to be determined mechanically, with useful control attenuating the amplitude at the boundary between the two parts of the panel.

However, there has been a demand for the appearance of a sound reproducer having a configuration in the form of an interior material as a sound reproducer is composed of a wall interior material rather than a separate protruding sound player to decorate the room.

Japanese Patent Application Publication No. 2019-110588 (2019.07.04.) Korean Intellectual Property Office Publication Patent No. 2001-0012527 (2001.02.15)

The first problem to be solved is to solve the problem of reproducing a sound with no difference in sound level by location according to distance by outputting and reproducing a plane wave sound of a surface driving method.

The second task to be solved is to solve the task of realizing various tones according to interior materials.

The third problem to be solved is to solve a problem that does not require a separate space by configuring a speaker having a sound reproduction function that occupies a separate space as a sound reproduction panel having a function of a wall interior material.

The fourth task is to solve the problem of connecting USB, CD, and other broadcasts with Bluetooth method or wired audio system for providing sound source by wireless method.

In order to solve the above problem, it has the following configuration.

Acoustic panels attached to the wall interior material;

It constitutes a panel having a sound reproduction function having; an actuator configured on the rear surface of the acoustic panel.

Here, it is preferable to further configure an audio unit for driving the actuator.

Here, it is preferable that the audio unit is configured to receive signals from Bluetooth audio.

Here, it is preferable that the audio unit is mounted on a bracket that fixes the acoustic panel or a separate bracket.

Here, it is preferable that the actuator is not fixed to the acoustic panel fixing bracket.

Here, it is preferable to fix the actuator to the bracket for fixing the acoustic panel.

Here, it is preferable to configure one or two or more actuators on the acoustic panel.

Here, it is preferable to configure the actuator to be symmetrical to the corner of the acoustic panel.

Here, it is preferable to configure the actuator to be asymmetrical to the corner of the acoustic panel.

Here, it is preferable to configure the actuator to be symmetrical to the left and right portions of the acoustic panel.

Here, it is preferable to configure the actuator to be asymmetrical to the left and right portions of the acoustic panel.

Here, when one actuator is fixed, it is preferable to configure it to be vertically symmetrical or asymmetrical in the central portion fixedly disposed in the central portion of the acoustic panel.

Here, it is preferable to attach a spacer that is a vibration auxiliary material between the acoustic panel and the acoustic panel fixing bracket for fixing the acoustic panel in order to control the mechanical resistance of vibration energy.

Here, it is preferable to attach a vibration control material to the vibration part of the acoustic panel to absorb or suppress vibration energy for the purpose of reproducing excellent acoustic characteristics by controlling a change in physical characteristics of a specific frequency due to abnormal resonance.

Here, it is preferable to configure an edge cutout in order to increase the surface vibration of the acoustic panel and increase the sound pressure level by increasing the surface vibration of the acoustic panel by cutting the edge portion of the acoustic panel. .

Here, it is preferable to configure the corrugated portion in order to increase the amount of vibration and amplitude by configuring the edge portion of the acoustic panel in a corrugated shape.

Here, the acoustic panel is preferably configured in a flat or curved shape.

Here, the acoustic panel is preferably a metal material.

Here, the metal material is preferably aluminum or galvanized steel sheet.

The first effect is to have the effect of reproducing a sound with no difference in sound level for each location according to distance by outputting and reproducing a plane wave sound of a surface driving method.

The second effect is to have the effect of realizing various tones according to interior materials.

The third effect is that a speaker having a sound reproduction function occupying a separate space is composed of a sound reproduction panel having a function of a wall interior material, so that a separate space is not required.

The fourth effect is to have the effect of connecting USB, CD, and other broadcasts as a Bluetooth method for providing sound sources in a wireless method or as audio in a wired method.

1 is a view showing an acoustic panel inserted into the panel construction surface.
Fig. 2a is a diagram showing an acoustic connection system in an acoustic panel.
Figure 2b is a diagram showing the connection of the audio system from the outside.
Figure 3a is a view showing a state in which the rear of the actuator is not fixed.
3b is a diagram showing a state in which the rear of the actuator is fixed to the bracket.
4A is a plan view of the first embodiment showing a structure in which a plurality of actuators are used in an acoustic panel.
4B is a plan view of a second embodiment showing a structure in which a plurality of actuators are used in an acoustic panel.
4C is a plan view of a third embodiment showing a structure in which a plurality of actuators are used in an acoustic panel.
Fig. 5a is a view showing a spacer, which is a vibration auxiliary, is attached between the acoustic panel and the bracket for fixing the acoustic panel.
Fig. 5b is a diagram showing that a damper, which is a vibration control material, is attached to the acoustic panel vibration unit.
6A is a diagram showing the configuration of a first embodiment in which flexibility is increased in a metal panel edge portion in order to increase vibration of the acoustic panel.
FIG. 6B is a diagram showing a cross-sectional view of FIG. 6A.
Fig. 7a shows a configuration diagram of a second embodiment in which a metal panel edge is formed in a corrugated shape to increase vibration amplitude in order to increase vibration of the acoustic panel.
FIG. 7B is a diagram showing a cross-sectional view of FIG. 7A.
Fig. 8a is a diagram showing a cone-type speaker having a point source structure.
Figure 8b is a diagram showing a panel type speaker with a surface sound source structure.
Fig. 8c is a diagram showing the volume of a flat speaker (flat/curved type) and a cone type speaker by distance.
9 is a diagram showing the background technology.

It will be described in detail centering on the drawings as follows.

It is as follows from Figs. 1 to 2B.

As a wall interior material, a general panel 1 and an acoustic panel 100 are configured on the wall.

The audio unit is digitized, and the receiving unit (sound source) and the amplifying unit are composed of small chips, so that a circuit is formed on one pcb without separating it to complete the technology.

In particular, Bluetooth audio is miniaturized and completed.

In the case of the present invention, when the audio unit is mounted inside the acoustic panel, the audio signal is transmitted from the phone by pairing with the outside (phone), and the acoustic energy received and amplified by the audio unit mounted on the panel is supplied to the actuator to cause the acoustic panel to vibrate. Structure.

In addition, in the case of the need to charge the battery inside the audio unit of the present invention and the audio unit used without a battery, the power supply is directly connected from the outside and has a configuration having a function of controlling from the outside.

If the audio unit is not built-in, the acoustic panel (flat speaker) is driven by only having a connection structure that supplies acoustic energy to the actuator from external wired or wireless (Bluetooth) audio.

The present invention is a structure in which an audio unit is mounted inside an acoustic panel and an audio unit is configured from the outside.

The right side view of FIG. 1 is a view showing a cross-sectional view (top) and a plan view (bottom) of the acoustic panel of the left side view of FIG.

An actuator 200 is formed on the rear surface of the acoustic panel 100, which is a wall interior material.

A panel having a sound reproduction function constructed in this way is constructed.

An audio unit 600 for driving the actuator 200 is further configured to constitute a panel having a sound reproduction function.

The audio unit 600 may be configured to receive a signal from Bluetooth audio.

The audio unit 600 is connectable by wire or wireless.

2A, the audio unit 600 may be configured by being spaced apart or attached to the inner part of the acoustic panel 100.

The sound output is supplied to the actuator 200, and the sound source can be supplied from a Bluetooth transmitting device such as a phone outside the wall.

2B is a diagram showing the configuration of the audio unit 600 outside the acoustic panel 100 (outside the wall).

The audio unit 600 may be configured inside the acoustic panel 100, or a bracket for fixing the acoustic panel or a separate fixing bracket may be installed and mounted.

The audio unit 600 is a system that connects from the outside of the wall, and the acoustic panel shows a structure consisting of only a simple speaker configuration.

It will be described with reference to FIGS. 3A and 3B as follows.

3A is a view showing that the actuator 200 is attached to the rear surface of the acoustic panel without fixing it to the acoustic panel fixing bracket 300.

3B is a view showing the actuator 200 is fixed to the acoustic panel fixing bracket 300.

It will be described with reference to Figures 4a and 4c as follows.

It has a structure in which actuators are arranged symmetrically or asymmetrically for the purpose of improving acoustic characteristics.

It has an arrangement structure to control abnormal characteristics due to mutual interference of vibration energy by applying a symmetrical or asymmetrical structure when vibration occurs by an actuator.

In the method of fixing the actuator, open the rear of the actuator fixed inside the acoustic panel. That is, it has a structure that is arranged in an unfixed state.

In addition, it has a structure in which the rear of the actuator fixed inside the acoustic panel is fixed to the panel fixing bracket or a separate bracket.

It is also worth considering that one or more actuators, which are sound sources, are installed.

Considerations for symmetric and asymmetric structures have the following structures.

4A has the following symmetrical and asymmetrical structures.

It is preferable to configure one or two or more actuators 200 in the acoustic panel 100.

The actuator 200 is configured to be symmetrical to a corner portion of the acoustic panel 100.

The actuator 200 is configured to be asymmetrical to the corner of the acoustic panel 100.

The structure for symmetry and asymmetry has the following configuration.

a: has a symmetric or asymmetric structure of a'.

It has a symmetrical or asymmetrical structure of a:b.

b: It has a symmetric or asymmetric structure of b'.

a': has a symmetric or asymmetric structure of b'.

4B has the following symmetrical and asymmetrical structures.

The actuator 200 is configured to be symmetrical to the left and right portions of the acoustic panel 100.

The actuator 200 is configured to be asymmetrical to the left and right portions of the acoustic panel 100.

The structure for symmetrical and asymmetrical has the following configuration.

It has a symmetric or asymmetric structure of c: c'.

d: It has a symmetrical or asymmetric structure of d'.

Figure 4c has the following symmetrical or asymmetrical structure.

e: It has a symmetric or asymmetric structure of e'.

f: has a symmetric or asymmetric structure of f'.

e: has a symmetrical or asymmetrical structure of f.

5A and 5B will be described below.

A specific configuration in which an optimum condition can be found in the vibration characteristics of the acoustic panel 100 for the purpose of improving vibration characteristics is as follows.

Vibration auxiliary material (spacer) and divided vibration for the purpose of reproducing excellent acoustic characteristics by facilitating vibration of the acoustic panel 100 fixed to the acoustic panel fixing bracket and controlling abnormal resonance energy when vibration occurs by the actuator 200 Construct control material.

A description of the vibration aid (spacer) is as follows.

A spacer, which is a vibration auxiliary material 400, is attached between the acoustic panel 100 and the acoustic panel fixing bracket 300 for fixing the acoustic panel 100 to reduce the mechanical resistance of vibration energy to maximize acoustic energy. .

As the material of the vibration auxiliary material 400, it is preferable to select a material having an elastic function capable of reducing the mechanical resistance of vibration energy.

In the structure of the area and thickness of the material, the structure of the area and thickness is selected in consideration of the acoustic characteristics of the vibration aid.

Materials are selected from rubber and rubber foaming agents, synthetic resins, and semi-dry liquid resins.

The following describes the vibration control material (damper) as follows.

A vibration control material 500 capable of absorbing, suppressing, and controlling vibration energy for the purpose of realizing excellent acoustic characteristics by controlling the change in physical characteristics of a specific frequency due to abnormal resonance, and is attached to the acoustic panel 100 and the vibration surface 130 as a material. Is to do.

Select and use rubber and rubber foaming agents and synthetic resin semi-dry liquid resins, which are materials that can suppress vibration energy of a specific frequency.

It has a structure of an area and a thickness in consideration of the acoustic characteristics of the vibration auxiliary material 400.

It will be described with reference to Figures 6a and 6b as follows.

It has a configuration that has the flexibility of the panel edge for the purpose of increasing the vibration amplitude.

With the structure of the vibration flexible part 120 that increases the flexibility of the non-cut portion by cutting the edge portion of the acoustic panel 100, the surface vibration of the acoustic panel 100 is increased to expand the sound reproduction band and sound pressure level. The edge cutout 110 is configured for the purpose of increasing the flexibility of the edge of the metal panel in order to increase.

The acoustic panel 100 has a configuration that provides relative flexibility of an uncut portion by cutting an edge portion so that vibration (vibration) can be increased by reducing mechanical resistance during vibration.

7A and 7B have the following configuration.

It is configured to have a structure that can increase the amount of vibration amplitude by processing a wrinkle shape on the edge.

That is, the corrugated portion 140 is configured to increase the amount of vibration and amplitude by configuring the edge portion of the acoustic panel 100 in a corrugated shape.

As the material of the acoustic panel 100, the following materials are used.

It prevents fire and attaches a solid wood or fabric pattern to the following metals to enhance the aesthetic.

As the material of the acoustic panel 100, aluminum, which is a metal panel, GI steel plate (hot dip galvanized steel plate), etc. are used.

The configuration of the upper surface material of the acoustic panel 100 is as follows.

Solid wood film, synthetic resin film, cork, and fabric are used.

The acoustic panel 100 is configured in a flat or curved shape according to the shape of the wall surface.

It will be described with reference to Figures 8a, 8b and 8c as follows.

8A and 8B show acoustic energy attenuation characteristics for each distance of a point sound source and a surface sound source structure.

8C is a diagram of sound versus distance, and compares the acoustic characteristics of an acoustic panel speaker with a flat type, a curved type, and a general Cone speaker.

The characteristic of the flat speaker with the acoustic panel 100 structure is that the amount of attenuation of the sound pressure according to the location of the listener is less than that of the cone type speaker with a point sound source, so it has excellent acoustic energy transmission power to a distant listener.

In particular, the speaker of the acoustic panel 100 acts as a factor to increase the acoustic energy as the entire wall surface acts as a reflective plate.

It is preferable that the acoustic panel is a metal material.

The metal material is preferably aluminum or galvanized steel sheet.

Aluminum and galvanized steel sheets (GI steel sheets) are easy to manufacture as interior materials by utilizing the etching technology in the patent filed separately by the applicant.

The basic material for interior materials can be diversified, but it is the use of metal from the viewpoint of the applicant's unique technology and fire fighting law.

Since each surface of the applied metal in the acoustic panel is manufactured with a uniform thickness, there is an advantage of reproducing uniform acoustic energy in the same shape structure.

The change in thickness has a great effect on sound quality.

By changing the thickness of only the acoustic panel equipped with the actuator, it can be advantageously applied to the realization of acoustic performance in the construction state without any difference in appearance.

In particular, the use of a thin plate has the advantage of increasing the volume as it can be reproduced over a wide band from low to high tones in terms of frequency, and vibration is easy.

The metal material is used because it is advantageous for sound reproduction and characteristic tuning in terms of thickness uniformity, ease of mass production, and free application of thickness.

It will be described in relation to the acoustic characteristics as follows.

In the same structure, if the weight is heavy, the volume decreases, but it is advantageous in the low frequency band.

When the weight is light, the volume increases and the volume in the lower frequency band decreases.

If the panel is hard, it is disadvantageous to the ability to reproduce the low frequency range.

If the panel is thin and flexible, the volume increases and the ability to reproduce bass and treble is improved.

The characteristics of the panel above and the contents of the volume have contradictory logic, so finding the optimum condition can be said to be characteristic tuning.

In addition to the above four, there are many variables of mutually contradictory logic, but only some of them are described in connection with the acoustic panel.

The terms or words used in this specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventor may appropriately define the concept of terms in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention based on the principle that there is.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, so at the time of application, these can be replaced. It should be understood that there may be various equivalents and variations.

1: general panel 100: acoustic panel 110: edge cutout 120: vibration flexible portion
130: vibration surface 140: wrinkles
200: Actuator 300: Acoustic panel fixing bracket
400: vibration auxiliary material 500: vibration control material 600: audio unit

Claims (18)

Acoustic panels attached to the wall interior material;
In order to increase the flexibility of the uncut portion by cutting the edge portion of the acoustic panel, an edge cutout portion is configured to increase the sound pressure level and expand the sound reproduction band by increasing the surface vibration of the acoustic panel,
An actuator is configured on the back surface of the acoustic panel,
One or two or more of the actuators are configured on the acoustic panel,
The actuator is configured to be symmetrical or asymmetrical to the left and right portions of the acoustic panel,
An audio unit driving the actuator;
The panel having a sound reproduction function, characterized in that the audio unit is mounted on the bracket for fixing the sound panel. delete The panel of claim 1, wherein the audio unit receives a signal from a Bluetooth audio system. delete The panel according to claim 1, wherein the actuator is not fixed to the acoustic panel fixing bracket. The panel according to claim 1, wherein the actuator is fixed to an acoustic panel fixing bracket. delete The panel according to claim 1, wherein the actuator is configured to be symmetrical to a corner of the acoustic panel. The panel according to claim 1, wherein the actuator is configured to be asymmetrical to a corner portion of the acoustic panel. delete The panel according to claim 1, wherein one actuator is configured to be symmetrical or asymmetrical in the center portion of the acoustic panel. The panel having a sound reproduction function according to claim 1, wherein a spacer, which is a vibration auxiliary material, is attached between the acoustic panel and the acoustic panel fixing bracket for fixing the acoustic panel to control the mechanical resistance of vibration energy. . The method of claim 1, wherein a vibration control material is attached to the vibration part of the acoustic panel to absorb or suppress vibration energy for the purpose of reproducing excellent acoustic characteristics by controlling changes in physical characteristics of a specific frequency due to abnormal resonance. Panel with sound reproduction function. delete Acoustic panels attached to the wall interior material;
An actuator is configured on the back surface of the acoustic panel,
One or two or more of the actuators are configured on the acoustic panel,
The actuator is configured to be symmetrical or asymmetrical to the left and right portions of the acoustic panel,
An audio unit driving the actuator;
The audio unit is mounted on the acoustic panel fixing bracket,
A panel having a sound reproducing function, characterized in that a corrugated part is formed to increase the amount of vibration and amplitude by configuring an edge portion of the acoustic panel in a corrugated shape. The acoustic panel according to any one of claims 1, 3, 5, 6, 8, 9, 11 to 13, and 15, wherein the acoustic panel is formed in a flat or curved shape. Panel with playback function. According to any one of claims 1, 3, 5, 6, 8, 9, 11 to 13, and 15, the acoustic panel has a sound reproduction function, characterized in that the metal material. panel. 18. The panel of claim 17, wherein the metallic material is an aluminum or galvanized steel sheet.

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