KR101122204B1 - Speaker device having speaker grille capable of displaying and speaker array using the same - Google Patents

Abstract

A speaker device including a speaker grille capable of display and a speaker array including a plurality of such speaker devices are disclosed. The speaker device according to the present invention comprises: a speaker grill having a plurality of permeation holes and a plurality of pixels for transmitting sound; A driving circuit for driving the pixels to display a video source on the speaker grille; And a sound generator for generating sound through the diaphragm and allowing the generated sound to be output through the through holes. Therefore, the display using the speaker is possible, and the failure of the display panel due to the vibration can be reduced.

Speaker, LED, OLED, Soundproof Hall

Description

Speaker device having speaker grille capable of displaying and speaker array using the same}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a speaker device, and more particularly, to a speaker device and a speaker array capable of video output together with sound output by employing a speaker grill including a plurality of pixels and permeation holes.

The speaker is for sound output, and is a device for outputting a sound or a high or low sound depending on a sound source.

In general, a speaker of a moving coil type is widely used, and an electrostatic speaker, a ribbon speaker, or a piezoelectric speaker is also introduced.

The moving coil speaker forms a magnetic circuit together with a pole piece by installing a permanent magnet on the front plate and the back plate, respectively, above and below the ring. A gap is formed between the pole piece and the front plate to form a gap, in which a bobbin-wound voice coil is installed and a spider is used to support it.

The diaphragm is attached to the bobbin to increase the vibration area, and the diaphragm is supported by using a flexible material edge on the speaker frame. The central part of the diaphragm is covered with a dust cap, and the shape of the diaphragm and the dust cap is a factor for determining directivity in high-pitched sound and generation of split vibration.

When a current flows through the voice coil of the speaker, a force called Lorentz's force is generated to move the diaphragm up and down to output sound.

In particular, in a large concert hall, such as a concert hall, since large speakers are installed in various places, the performance effect can be maximized if an image can be displayed on the speaker.

Republic of Korea Patent No. 10-0766520 introduces a speaker device having a video screen function. The speaker device of Korean Patent No. 10-0766520 replaces a conventional speaker's conch with a flexible OLED to display various images.

However, since Patent No. 10-0766520 replaces a diaphragm with an OLED, the OLED is often broken by vibration, and it is difficult to process the OLED into a cone shape for the diaphragm.

Therefore, there is an urgent need for a new speaker device that can display video sources while reducing the effects of vibration and producing efficiently.

SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a speaker device capable of producing a video source while reducing the failure caused by vibration and producing efficiently.

In addition, the present invention is to enable the display using the speaker grille of the large speaker used in the concert hall or performance hall to provide a video output and at the same time to effectively output the sound through a plurality of permeation holes located in the speaker grille For the purpose of

In addition, an object of the present invention is to enable a large display by configuring a plurality of speaker arrays in one screen.

It is also an object of the present invention to minimize diffraction of sound in the longitudinal direction while providing a display using a speaker grille.

A speaker device according to the present invention for achieving the above object, a speaker grill having a plurality of permeation holes and a plurality of pixels for transmitting sound; A driving circuit for driving the pixels to display a video source on the speaker grille; And a sound generator for generating a sound through the diaphragm and allowing the generated sound to be output through the through holes.

In this case, the plurality of pixels may constitute an LED panel.

At this time, the speaker grill may be spaced apart from the speaker case.

In this case, the speaker device may further include a decoder that receives a data stream multiplexed with image and sound, and decodes the data stream into the video source provided to the driving circuit and the audio source for generating the sound. have.

In this case, the video source may be generated by applying an effect based on the sound.

In this case, the speaker device may include holes corresponding to the permeation holes, and may further include a protecting layer for protecting the speaker grill from vibrations or magnetic fields related to the output of the sound.

In this case, the perforation holes may have a long shape in the vertical direction.

In addition, the speaker array according to the present invention, a plurality of speaker devices each including a speaker grill having a plurality of permeation holes and a plurality of pixels for the transmission of sound; And a video source decoder to decode one video source to provide a sub video source to each of the speaker devices so that the speaker grilles are fused to form one screen. In this case, each of the speaker devices generates a sound through a driving circuit and a diaphragm for driving the pixels so that the sub video source is displayed on the speaker grill, and a sound generator for outputting the generated sound through the through holes. Include.

According to the present invention, it is possible to display a video source through the speaker device, and to efficiently produce a speaker device with less failure of the display panel due to vibration.

In addition, the present invention is to enable the display using the speaker grille of a large speaker used in a concert hall or a concert hall to provide a video output and at the same time to effectively output sound through a plurality of permeation holes located in the speaker grille. Can be.

In addition, the present invention enables a large display by configuring a plurality of speaker arrays in one screen.

In addition, the present invention can minimize the diffraction of the longitudinal sound while providing a display using the speaker grille.

The present invention will now be described in detail with reference to the accompanying drawings. Here, the repeated description, well-known functions and configurations that may unnecessarily obscure the subject matter of the present invention, and detailed description of the configuration will be omitted. Embodiments of the present invention are provided to more fully describe the present invention to those skilled in the art. Accordingly, the shape and size of elements in the drawings may be exaggerated for clarity.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a state in which a speaker device and a speaker grille are separated.

Referring to FIG. 1, the speaker device includes a speaker grill 110, sound generators 120 and 130, and a speaker case 140.

The speaker grill 110 is a thin plate having many holes, and is fixed to the speaker case 140 by being located at the front of the speaker device. Sound is output through a number of holes drilled in the speaker grill 110. At this time, the shape of the hole is not limited to the circle. For example, the hole may be a rectangular shape or an elliptical shape.

The sound generating units 120 and 130 may generate a sound by receiving current, respectively, and may include an acoustic coil, a magnet, a damper, a plate, an outer cap, and a diaphragm (paper).

The speaker case 140 is literally a case of a speaker device and is usually made of a hard material such as plastic or wood.

2 is a view showing a speaker device according to an embodiment of the present invention.

Referring to FIG. 2, a speaker device according to an exemplary embodiment includes a speaker grill 210 having a plurality of sound-permeable holes and a plurality of pixels for transmitting sound.

For example, the perforation holes may have a subpixel size constituting one pixel as shown in FIG. 2.

In some embodiments, each of the perforation holes may have a long ellipse or a rectangular shape in the vertical direction. In this way, provided with long longitudinal holes in the longitudinal direction can minimize the diffraction of the sound in the vertical direction can be effectively used in large venues.

That is, the speaker grill 210 shown in FIG. 2 includes a display panel such as an LED panel or an OLED panel to enable display through the speaker device. At this time, since the speaker grille 210 must transmit sound generated by the diaphragm, the speaker grill 210 includes a plurality of sound-permeation holes.

The speaker device shown in FIG. 2 includes a driving circuit for driving a plurality of pixels. In some embodiments, the driving circuit may be included in the speaker grill 210 or may be included in the speaker case 220.

3 is a view illustrating a speaker grill and a driving circuit of a speaker device according to an embodiment of the present invention.

A speaker grill according to an embodiment of the present invention includes a plurality of pixels, which constitute a display panel. In this case, the display panel may be a light emitting diode (LED) panel or an active-matrix organic light emitting diode (AMOLED) panel, and the speaker grill including the display panel includes a plurality of sound-permeation holes for outputting sound.

Referring to FIG. 3, the pixels 331 of the speaker grill 330 are configured with sub-pixels 332 of three colors R, G, and B for color implementation.

Furthermore, the speaker grill 330 further includes sound-permeable holes H for transmitting sound.

For example, the permeation holes H may be distributed on the speaker grill 330 at a uniform two-dimensional density as shown in FIG. 3. In this case, each of the permeation holes H may be smaller than the pixel size, and in some embodiments, the size of the permeation holes H may be larger than the pixel size. The size of the sound-permeable holes H may be about the size of a sub-pixel as shown in the example shown in FIG.

The driving circuits 310 and 320 include a scan driving circuit 310 and a data driving circuit 320.

Each pixel 331 is connected to the scan line 311 and the data line 321. The data driver circuit 320 applies a data signal to each pixel 331 through the data line 321, and the scan driver circuit 310 applies a scan signal to the pixel 331 through the scan line 311. .

As such, the speaker grill 330 may be preferably implemented using an LED or an OLED panel in that the speaker grill 330 should be provided with the pixels and the permeation holes that constitute the display panel at the same time.

4 to 6 are views showing the sound-permeable holes included in the speaker grille.

In the example of FIGS. 4 to 6, one sound emitting hole is formed for each pixel.

Referring to FIG. 4, the pixel 410 includes R, G, and B subpixels having a square shape, and a ventilation hole 420 having the same size as the R, G, and B subpixels is formed in the speaker grill.

Referring to FIG. 5, the pixel 510 includes two R subpixels, one G subpixel, and two B subpixels having a square shape, and have a soundproof hole having the same size as that of the R, G, and B subpixels. 520 is formed in the speaker grille.

Typically, since the light emission efficiency and lifetime of the R, G, and B subpixels are different, the pixels may be configured by different area ratios between the subpixels as shown in FIG. 5.

Referring to FIG. 6, the pixel 610 includes R, G, and B subpixels having a rectangular shape, and a rectangular ventilation hole 620 is formed in the speaker grill. In this case, the sizes of the R, G, and B subpixels are the same, and the size of the permeation hole 620 may be different from the sizes of the R, G, and B subpixels.

The through-holes described with reference to FIGS. 4 to 6 are merely exemplary, and the through-holes may be implemented in various forms.

For example, the perforation hole may be implemented as a circle rather than a rectangular shape. For example, the perforation hole may be implemented as a rectangular or elliptical long in the longitudinal direction.

FIG. 7 is a diagram illustrating an example of a speaker grill to which a perforated hole of a long rectangular shape in a vertical direction is applied.

Referring to FIG. 7, it can be seen that the perforation hole included in the speaker grille is long in the vertical direction to prevent negative diffraction in the vertical direction.

In the case of large speakers used in concert halls, the diffraction in the vertical direction often causes a serious delay in sound waves, which is more problematic than the diffraction in the horizontal direction. Therefore, as shown in FIG. 7, if the sound-perforation hole formed in the speaker grille has a long shape in the vertical direction, the diffraction in the vertical direction can be minimized, and thus can be effectively used in a large concert hall.

8 is a view showing a speaker grill coupled to the speaker case according to an embodiment of the present invention.

Referring to FIG. 8, it can be seen that the speaker grill 810 including a plurality of pixels and a plurality of sound-permeable holes are spaced apart from the speaker case 820 by a distance a. As such, the speaker grill 810 may be spaced apart from the speaker case 820 by a predetermined distance, thereby reducing the influence of vibration, thereby improving durability.

In this case, the speaker grille may be installed at a predetermined distance apart from the speaker case by a connection part installed at four corners of the speaker grille, and at this time, a reinforcement material for absorbing vibration may be installed near the connection part of the four corner parts of the speaker grille. have.

9 is a view showing a speaker device according to another embodiment of the present invention.

Referring to FIG. 9, a speaker device includes a speaker grill 910, sound generators 920 and 930, a speaker case 940, and a protecting layer including a plurality of pixels and a plurality of sound-permeable holes for transmission of sound. (protecting layer) 950.

The speaker grille 910 is a thin plate having many perforated holes, and is provided with a plurality of pixels and is fixed to the speaker case 940 by being located in front of the speaker device. Sound is output through a number of perforation holes drilled in the speaker grill 910. At this time, the shape of the permeation holes is not limited to the circle. For example, the perforation hole may be oval or rectangular in shape.

The sound generating units 920 and 930 may generate a sound by receiving a current, and may include a sound coil, a magnet, a damper, a plate, an outer cap, and a diaphragm (paper).

One speaker may be provided in one speaker device, or may be provided in two or more as shown in the example of FIG.

The protecting layer 950 is provided between the speaker grill 910 and the sound generators 920 and 930. The protecting layer 950 serves to protect the speaker grill 910 including a display panel including a plurality of pixels from vibration or magnetic field generated when the sound generators 920 and 930 generate sound.

In this case, the protecting layer 950 may be made of a light metal material or a material capable of blocking a magnetic field, such as a gravity barrier material or a magnetic field absorber. This is because it is necessary to minimize the influence of the magnetic field generated from the acoustic coil or the like included in the acoustic generator on the speaker grill 910.

The protecting layer 950 may be attached to or adjacent to the rear surface of the speaker grille and may include holes corresponding to the perforation holes of the speaker grille 910.

The protecting layer 950 may include a sound absorbing layer to protect the display panel of the speaker grille.

That is, the sound emitted from the sound generating units 920 and 930 toward the sounding hole of the speaker grille is output to the front through the hole of the protecting layer 950 and the sounding hole of the speaker grille 910. The sound output in other directions may be absorbed by the sound absorbing layer included in the protecting layer 950 before reaching the speaker grill 910 including the display panel.

The protecting layer 950 may include a reflective layer as well as a sound absorbing layer.

In this case, the reflective layer may be positioned toward the sound generating units 920 and 930, and the sound absorbing layer may be positioned toward the speaker grill 910.

Among the sounds generated by the sound generators 920 and 930, the sound emitted in the direction of the sound hole of the speaker grill 910 is output to the outside of the speaker device through the hole and the sound hole of the protecting layer 950. However, the sound output in a direction other than the permeation hole is reflected back to the sound generators 920 and 930 by the reflective layer, and the reflected sound strikes the sound generators 920 and 930 again to the protecting layer 950. Headed. Part of the sound directed to the protecting layer 950 is output to the front of the speaker device through the hole and the permeation hole of the protecting layer 950. On the other hand, the sound absorbing layer absorbs the vibration so that the vibration when the sound is reflected by the reflective layer is not transmitted to the speaker grill including the display panel.

10 is a block diagram showing a speaker device according to an embodiment of the present invention.

Referring to FIG. 10, a speaker device according to an embodiment of the present invention includes a speaker grill 1010, a driving circuit 1020, an acoustic generator 1030, and a decoder 1040.

The speaker grill 1010 includes a plurality of sound absorbing parts and a plurality of pixels for transmitting sound.

The driving circuit 1020 drives the pixels so that the video source is displayed on the speaker grill 1010. In this case, the pixels may constitute an LED panel. The speaker grill including the LED panel may be a large speaker used in a concert hall and the like, and the LED panel may be effectively used for a display.

In some embodiments, the pixels may form an OLED panel.

The sound generating unit 1030 generates sound through the diaphragm, and allows the generated sound to be output through the sound through holes. The sound generating unit 1030 functions to generate sound by applying a current, and may include a sound coil, a magnet, a damper, a plate, an outer cap, and a diaphragm (paper).

In this case, the number of permeation holes may correspond to the number of pixels. For example, the number of permeation holes may be equal to the number of pixels. For example, the number of permeation holes may be half of the number of pixels. For example, the number of pixels may be an integer multiple of the number of permeation holes.

The shape of the diaphragm hole is not limited to the circle. For example, the perforation hole may have a long ellipse or a rectangular shape in the longitudinal direction. For example, only one perforation hole may exist in the longitudinal direction.

The permeation holes may be evenly distributed on the speaker grille.

The decoder 1040 may receive a data stream multiplexed with an image and sound, and decode the data stream to generate a video source provided to the driving circuit 1020 and an audio source provided to the sound generator 1030.

For example, the data stream may be a TS stream defined by the MPEG-2 system standard. At this time, the decoder analyzes the TS packet into an audio packet and a video packet, generates an audio source corresponding to an elementary stream generated using the audio packet, and provides the audio source to the sound generator 1030. The video source corresponding to the elementary stream generated using the video packet may be generated and provided to the driving circuit 1020.

The video source provided to the driving circuit 1020 and the audio source provided to the sound generator 1030 may be synchronized with each other. By providing a display synchronized with the sound generated through the speaker device that is expected to generate only the normal sound, it is possible to effectively deliver the performance contents to the audience or the audience in a performance or a concert.

According to an embodiment, the video source may be generated by applying an effect based on a sound or an audio source generated by the sound generator 1030. For example, a video source may be generated by applying a flashing effect to a bass that is popping out at a performance or a concert. For example, the video source may be generated such that the brightness of the screen is proportional to the volume of the sound.

11 illustrates a speaker array according to an embodiment of the present invention.

Referring to FIG. 11, a speaker array according to an embodiment of the present invention includes speaker devices 1110, 1120, 1130, and 1140 and a video source decoder 1150.

The speaker devices 1110, 1120, 1130, and 1140 each include a speaker grille having a plurality of permeable parts and a plurality of pixels for transmitting sound, and may be the speaker devices described with reference to FIGS. 2 to 10, respectively. have.

The video source decoder 1150 decodes one video source and provides a sub video source to each of the speaker devices 1110, 1120, 1130, and 1140 so that the speaker devices 1110, 1120, 1130, and 1140 are fused together. To configure the screen.

For example, the video source decoder 1150 decodes one video source and provides the speaker device 1110 with a sub video source corresponding to the top quarter of the original video source screen, and the speaker device 1120 with Provide a sub video source corresponding to the second part 1/4 of the top of the original video source screen, and the speaker unit 1130 provides a sub video source corresponding to the second part 1/4 of the bottom of the original video source screen. The speaker device 1140 may provide a sub video source corresponding to the bottom portion 1/4 of the original video source screen.

Each of the speaker devices 1110, 1120, 1130, and 1140 generates sound through a driving circuit and a diaphragm for driving the pixels so that the sub video source is displayed in the speaker grill, and generates the sound through the sound absorbing portions. May include wealth.

Since a plurality of large speakers are usually provided in a concert hall or an outdoor performance hall, a large display screen may be realized by using a speaker array that is a combination of large speakers. Since the sub video source corresponding to the sub screens constituting the super large screen is provided to each speaker device through the video source decoder 1150, the speaker grill of each speaker device forms an extra large screen composed of a plurality of speaker devices. Each sub screen display is possible.

12 is a diagram illustrating an example of configuring an extra-large screen using a speaker array according to an embodiment of the present invention.

Referring to FIG. 12, it can be seen that a performance screen is displayed through a speaker array including eight speaker devices.

Each of the eight speaker devices has a plurality of permeable parts and a plurality of pixels for sound transmission, and the sub video source generated by decoding one video source in the speaker grill of each of the eight speaker devices is displayed. And a sound generator for generating sound through the driving circuit for driving the pixels and the diaphragm and outputting the generated sound through the sound-permeable parts.

As described above, the speaker device and the speaker array according to the present invention may not be limitedly applied to the configuration and method of the embodiments described as described above, but the embodiments are all of the embodiments so that various modifications can be made. Or some may be selectively combined.

1 is a view showing a state in which a speaker device and a speaker grille are separated.

2 is a view showing a speaker device according to an embodiment of the present invention.

3 is a view illustrating a speaker grill and a driving circuit of a speaker device according to an embodiment of the present invention.

4 to 6 are views showing the sound-permeable holes included in the speaker grille.

FIG. 7 is a diagram illustrating an example of a speaker grill to which a perforated hole of a long rectangular shape in a vertical direction is applied.

8 is a view showing a speaker grill coupled to the speaker case according to an embodiment of the present invention.

9 is a view showing a speaker device according to another embodiment of the present invention.

10 is a block diagram showing a speaker device according to an embodiment of the present invention.

11 illustrates a speaker array according to an embodiment of the present invention.

12 is a diagram illustrating an example of configuring an extra-large screen using a speaker array according to an embodiment of the present invention.

Claims (15)

A speaker grill having a plurality of permeation holes and a plurality of pixels for transmitting sound; A driving circuit for driving the pixels to display a video source on the speaker grille; A sound generating unit for generating sound through a diaphragm, and outputting the generated sound through the through holes; And And a decoder which receives a data stream multiplexed with images and sound, and decodes the data stream into the video source provided to the driving circuit and an audio source for generating the sound. The method according to claim 1, And the plurality of pixels constitute an LED panel. The method according to claim 1, And the video source is synchronized with the sound. The method according to claim 1, The speaker grill is fixed to the speaker case, characterized in that spaced apart. delete The method according to claim 1, The video source is And a speaker device generated by applying an effect based on the sound. A speaker grill having a plurality of permeation holes and a plurality of pixels for transmitting sound; A driving circuit for driving the pixels to display a video source on the speaker grille; A sound generating unit for generating sound through a diaphragm, and outputting the generated sound through the through holes; And And apertures corresponding to the permeation holes, and a protecting layer for protecting the speaker grill from vibrations or magnetic fields associated with the output of the sound. The method of claim 7, The sound emitting hole is a speaker device characterized in that it has a long shape in the longitudinal direction. A plurality of speaker devices each including a plurality of permeation holes for transmitting sound and a speaker grill having a plurality of pixels; And A video source decoder for decoding a single video source to provide a sub video source to each of the speaker devices so that the speaker grilles are fused to form a single screen; Each of the speaker devices includes a driving circuit for driving the pixels so that the sub video source is displayed on the speaker grill, and a sound generator for generating sound through the diaphragm and outputting the generated sound through the sound-permeating holes. A speaker array characterized by the above-mentioned. The method of claim 9, The sound emitting holes are characterized in that each of the longitudinal shape in the longitudinal speaker array. The method of claim 9, And the plurality of pixels constitute an LED panel. The method of claim 9, And the video source is synchronized with the sound. 10. The method of claim 9, The speaker grill is fixed to the speaker case spaced apart from the speaker array. The method of claim 9, The video source is And a speaker array generated by applying an effect based on the sound. The method of claim 9, The speaker device And a protective layer for protecting the speaker grille from vibrations or magnetic fields associated with the output of the sound, the holes corresponding to the permeation holes.

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