Display device

Abstract

To provide a display device improved in the sound quality of a speaker.SOLUTION: A display device includes: a display panel; a frame located in a rear of the display panel; and a speaker coupled to a rear of the frame. The speaker includes: a speaker box; a speaker unit coupled to the speaker box; a plate which covers the speaker unit and which is coupled to the speaker box; a chamber which is formed between the speaker unit and the plate, and which is opened in one direction; and a cushion which occupies a portion of the chamber.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to display devices. [Background technology]

[0002] [Related Technology] This application claims priority under Article 4 of Korean Patent Application No. 10-2024-0047723 (filing date: April 9, 2021; DAS: 0DE2), and the present invention is based on the disclosures in that Korean patent application. For reference, the contents of the specification, claims, and drawings of that Korean patent application are incorporated herein by reference. [Technical background] As the information society develops, the demand for various display device types has also increased, and in response to this, various display devices such as LCD (Liquid Crystal Display Device), PDP (Plasma Display Panel), ELD (Electroluminescent Display), VFD (Vacuum Fluorescent Display), and OLED (Organic Light Emitting Diode) have been researched and used in recent years.

[0003] Among them, LCD panels have a TFT substrate and a color substrate facing each other with a liquid crystal layer in between, and can display images using light provided by a backlight unit, while OLED panels can display images by depositing an organic layer that can emit light itself on a substrate with a transparent electrode.

[0004] Such display devices are equipped with speakers, which convert electrical acoustic signals into sound waves and output them. Speakers are subdivided into woofers, midrange speakers, tweeters, full-range speakers, etc., depending on the sound range they produce.

[0005] In line with the recent trend toward slimmer display devices, the thickness of speakers provided in display devices has also become thinner. Summary of the Invention [Problem to be solved by the invention]

[0006] The present disclosure is directed to solving the above-mentioned problems and other problems.

[0007] Another object is to provide a structure that can improve the sound quality of a speaker of a display device.

[0008] Another object is to provide a structure that can improve the mid- and high-frequency characteristics of a speaker.

[0009] Another object is to provide a display device equipped with a speaker capable of providing clear sound.

[0010] Another object is to provide a structure for smoothly outputting the sound of a speaker to the outside of a display device. [Means for solving the problem]

[0011] According to one aspect of the present disclosure to achieve the above or other objectives, a display device may include: a display panel; a frame located behind the display panel; and a speaker coupled to the rear of the frame, and the speaker may include (comprise; constitute; construct; set; enclose; contain; contain): a speaker box; a speaker unit coupled to the speaker box; a plate covering the speaker unit and coupled to the speaker box; a chamber formed between the speaker unit and the plate and open in one direction; and a cushion occupying a part of the chamber. [Effects of the Invention]

[0012] The effects of the display device according to the present disclosure are as follows.

[0013] According to at least one embodiment of the present disclosure, it is possible to provide a structure that can improve the sound quality of a speaker of a display device.

[0014] According to at least one embodiment of the present disclosure, it is possible to provide a structure that can improve the mid- and high-frequency characteristics of a speaker.

[0015] According to at least one embodiment of the present disclosure, a display device can be provided that includes a speaker that can provide clear sound.

[0016] According to at least one embodiment of the present disclosure, it is possible to provide a structure for smoothly outputting sound from a speaker to the outside of a display device.

[0017] Further scope of applicability of the present disclosure will become apparent from the following detailed description. However, it should be understood that the detailed description and specific embodiments, such as preferred embodiments of the present disclosure, are given by way of example only, since various changes and modifications within the spirit and scope of the present disclosure will be apparent to those skilled in the art. [Brief explanation of the drawings]

[0018] [Figure 1-23] 1 to 23 are diagrams illustrating examples of display devices according to embodiments of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, the embodiments disclosed in this specification will be described in detail with reference to the accompanying drawings, and the same or similar components will be given the same reference numerals regardless of the drawing numbers, and duplicate descriptions thereof will be omitted. [One aspect of the present invention] In one aspect of the present invention, the following invention is proposed. [Claim 1] 1. A display device, comprising: Display panel; a frame positioned behind the display panel; and a speaker coupled to the rear of the frame; The speaker includes: Speaker box, a speaker unit coupled to the speaker box; a plate covering the speaker unit; a chamber formed between the speaker unit and the plate and open in one direction; and a cushion located within the chamber. [Claim 2] The speaker unit includes: a speaker frame coupled to the speaker box; and a diaphragm vibratably coupled to the speaker frame; the plate covers the speaker frame and the diaphragm; The display device of claim 1 , wherein the cushion is positioned on the speaker frame. [Claim 3] The display device according to claim 2 , wherein the cushion is positioned between the plate and the speaker frame and is pressed toward the speaker frame by the plate. [Claim 4] the speaker frame has a ring shape, The display device of claim 2 , wherein the cushion has an arc shape, extending along the speaker frame and opposite the opening of the chamber. [Claim 5] The speaker box includes: a joint where the plate is located; a recessed portion recessed from the joint portion; and a support portion on which the speaker frame is positioned, the support portion forming a step that is lower than the recessed portion, The display device of claim 2 , wherein the recess is located inside the chamber between the coupling portion and the support portion. [Claim 6] The display device of claim 5 , wherein the depth of the recessed portion is less than the depth of the speaker frame relative to the coupling portion. [Claim 7] the speaker frame has a ring shape, The recessed portion is a first part extending along the speaker frame and having an arc shape, the first part facing the opening of the chamber; a second part extending from one end of the first part toward the opening; and The display device of claim 6 , further comprising a third part extending from the other end of the first part toward the opening. [Claim 8] the opening of the chamber is formed between the second part and the third part; The display device of claim 7 , wherein the distance between the second part and the third part is smaller than a width of the speaker frame. [Claim 9] the speaker box includes a coupling portion extending along an edge of the plate and supporting the plate adjacent to the edge; the speaker frame has a ring shape, The coupling portion is a first section extending along the semicircle of the speaker frame opposite the opening of the chamber; a second section extending from one end of the first section toward the opening; and a third section extending from the other end of the first section toward the opening, The display device of claim 2 , wherein the distance between the second section and the third section decreases toward the opening. [Claim 10] the speaker box further includes fixing portions positioned inside the coupling portions, spaced apart from each other, and supporting the plate; The display device of claim 9 , wherein the plate is coupled to the coupling portion and the fixing portion. [Claim 11] The speaker box includes: a first press portion that forms a step that is lowered from one surface of the speaker box and in which the plate is positioned; a second press portion positioned between the speaker frame and the opening of the chamber, forming a step lower than the first press portion; a third press portion located between the second press portion and the opening of the chamber and forming a step lower than the second press portion; and The display device according to claim 2 , further comprising a support portion on which the speaker frame is positioned, the support portion forming a step lower than the first press portion and the second press portion. [Claim 12] the opening of the chamber is formed between the plate and the third press part; The display device of claim 11 , wherein the spacing between the plate and the third press part is greater than the spacing between the plate and the second press part. [Claim 13] The display device of claim 1 , wherein the speaker further comprises a duct adjacent to the opening of the chamber and providing a flow path connecting the interior and exterior of the speaker box. [Claim 14] an outer frame extending along the edge of said frame; the outer frame has a hole facing the opening of the chamber; a bracket coupled to the frame adjacent the edge of the frame; and A back cover that covers the rear of the frame is further provided. The bracket is a sloped portion located between the hole of the outer frame and the opening of the chamber, the sloped portion having a length greater than a width of the opening of the chamber; and a latch located outside the inclined portion and to which the back cover is connected; The display device of claim 1 , wherein an end of the inclined portion toward the opening of the chamber is rounded. [Claim 15] a battery coupled to the rear of the frame; The speaker includes: a first speaker positioned between the first side of the frame and the battery; and The display device of claim 1 , further comprising: a second speaker positioned between a second side of the frame opposite the first side and the battery.

[0020] The suffixes "module" and "section" used in the following description for components are merely given or mixed together to facilitate the writing of the specification, and do not have any meaning or role that is distinct from each other.

[0021] Furthermore, when describing the embodiments disclosed herein, if it is determined that a detailed description of related publicly known technology may obscure the gist of the embodiments disclosed herein, the detailed description will be omitted. Furthermore, the attached drawings are merely for facilitating an understanding of the embodiments disclosed herein, and should not be construed as limiting the technical ideas disclosed herein, and should be understood to include any modifications, equivalents, or alternatives within the idea and technical scope of the present disclosure.

[0022] Terms including ordinal numbers such as first, second, etc. may be used to describe various components, but the components are not limited by the terms. The terms are used only to distinguish one component from another.

[0023] When a component is referred to as being "coupled" or "connected" to another component, it should be understood that the component may be directly coupled or connected to the other component, but that there may be other components in between. Conversely, when a component is referred to as being "directly coupled" or "directly connected" to another component, it should be understood that there are no other components in between.

[0024] A singular expression includes a plural expression unless the context clearly indicates otherwise.

[0025] In this application, the terms "comprise" or "have" and the like are intended to specify the presence of any feature, number, step, operation, component, part, or combination thereof described in the specification, and should be understood as not precluding the presence or possible addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0026] The directional indications of up (U), down (D), left (Le), right (Ri), front (F), and rear (R) shown in the drawings are for convenience of explanation only and do not limit the technical ideas disclosed in this specification.

[0027] 1, a display device 1 includes a display panel 11 for displaying an image. A display 10 includes a display panel 11. The display 10 may be referred to as a display unit 10 or a head 10.

[0028] The display 10 may include a first long side LS1, a second long side LS2 opposite the first long side LS1, a first short side SS1 adjacent to the first long side LS1 and the second long side LS2, and a second short side SS2 opposite the first short side SS1. For ease of explanation, the first and second long sides LS1 and LS2 are illustrated and described as being longer than the first and second short sides SS1 and SS2, but the first and second long sides LS1 and LS2 may also be substantially the same in length.

[0029] The direction parallel to the short sides SS1 and SS2 may be referred to as the up-down direction. The direction parallel to the long sides LS1 and LS2 may be referred to as the left-right direction. The direction perpendicular to the short sides SS1 and SS2 and the long sides LS1 and LS2 may be referred to as the front-rear direction.

[0030] The direction in which the display panel 11 displays an image may be referred to as the front (F, z), and the opposite direction may be referred to as the rear (R). The first short side SS1 side may be referred to as the left side (Le, x), and the second short side SS2 side may be referred to as the right side (Ri). The first long side LS1 side may be referred to as the top side (U, y), and the second long side LS2 side may be referred to as the bottom side (D).

[0031] The first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 may be referred to as edges of the display device 1. The points where the first long side LS1, the second long side LS2, the first short side SS1, and the second short side SS2 intersect with each other may be referred to as corners. The point where the first long side LS1 and the first short side SS1 intersect may be referred to as a first corner C1. The point where the first short side SS1 and the second long side LS2 intersect may be referred to as a second corner C2. The point where the second long side LS2 and the second short side SS2 intersect may be referred to as a third corner C3. The point where the second short side SS2 and the first long side LS1 intersect may be referred to as a fourth corner C4.

[0032] Referring to FIG. 2, the display 10 of the display device 1 may include a display panel 11 , a frame 13 , an inner frame 12 , an outer frame 14 , and a back cover 15 .

[0033] The display panel 11 forms the front surface of the display 10. For example, the display panel 11 may be an LCD panel, an LED panel, or an OLED panel. If the display panel 11 is an LCD panel, the display 10 may include a backlight unit that provides light to the display panel 11. The display panel 11 can output an image by dividing an image into a plurality of pixels and combining the color, brightness, and saturation of each pixel. The display panel 11 is divided into an active area where an image is displayed and a de-active area where an image is not displayed. The display panel 11 can generate light corresponding to red, green, or blue in response to a control signal.

[0034] The frame 13 may be located behind the display panel 11. The frame 13 may have a plate shape with a size corresponding to the display panel 11. Electronic components such as a PCB (Printed Circuit Board) are mounted on the frame 13. The frame 13 may also be called a cover bottom 13 or a module cover 13.

[0035] The inner frame 12 may extend along the edge of the frame 13. The vertical portion 12V of the inner frame 12 may cover the edge of the display panel 11 and the edge of the frame 13. The horizontal portion 12H of the inner frame 12 may intersect the vertical portion 12V and be located between the display panel 11 and the frame 13. The vertical portion 12Fa of the front cover 12F may extend along the vertical portion 12V and cover the vertical portion 12V. The horizontal portion 12Fb of the front cover 12F may intersect the vertical portion 12Fa and be opposite the front surface of the display panel 11. The front pad 11F may be attached to the front surface of the display panel 11 between the horizontal portion 12Fb and the display panel 11. The rear pad 11R may be attached to the rear surface of the display panel 11 between the display panel 11 and the horizontal portion 12H. The inner frame 12 may also be called a middle cabinet 12, a guide panel 12, or a side frame 12.

[0036] The outer frame 14 may extend along the inner frame 12 and cover the inner frame 12. The vertical portions 14V of the outer frame 14 may form edges LS1, LS2, SS1, and SS2 (see FIG. 1 ) of the display 10. The horizontal portions 14H of the outer frame 14 may intersect the vertical portions 14V and cover the front surface of the display panel 11 adjacent to the edges of the display panel 11. The vertical portions 14V may cover the vertical portions 12Fa of the front cover 12F, and the horizontal portions 14H may cover the horizontal portions 12Fb of the front cover 12F. The outer frame 14 may also be referred to as an end frame 14, a case top 14, or a side frame 14. Either one of the side frames 12, 14 may be omitted, and at least one side frame may be coupled to the frame 13.

[0037] The back cover 15 can cover the rear of the frame 13 and is coupled to the frame 13. The back cover 15 forms the rear surface of the display 10.

[0038] 3 and 4, the backlight unit 20 may be located between the frame 13 (see FIG. 2) and the display panel 11 (see FIG. 2) and may provide light to the display panel 11. In this case, the display panel 11 may be an LCD panel 11.

[0039] 3 , for example, the backlight unit 20 may include an optical layer 30 and an optical sheet 40 in front of the optical layer 30. The optical layer 30 may include a substrate 31, at least one light source 32, a light guide plate 36, and a reflective sheet 37.

[0040] The light guide plate 36 may be positioned between the frame 13 (see FIG. 2) and the display panel 11 (see FIG. 2). The substrate 31 may be adjacent to a lateral side of the light guide plate 36 or may extend along the lateral side. At least one light source 32 may be mounted on the substrate 31 to provide light to the lateral side of the light guide plate 36. The light source 32 may be a light emitting diode (LED), and the substrate 31 may be a printed circuit board (PCB). A reflective sheet 37 may be positioned on the rear surface of the light guide plate 36 and may reflect light provided by the light source 32 or reflected by the light guide plate 36 forward. This allows the light guide plate 36 to provide light transmitted from the light source 32 forward. A diffuser 35 may be disposed in front of the light guide plate 36.

[0041] The optical sheet 40 may include at least one sheet. For example, the optical sheet 40 may include at least one prism sheet and / or at least one diffusion sheet. Light from the light guide plate 36 can be provided to the display panel 11 (see FIG. 2) through the optical sheet 40.

[0042] 4, for example, the backlight unit 20′ may include an optical layer 30′ and an optical sheet 40 in front of the optical layer 30′. The optical layer 30′ may include a substrate 31′, at least one light source 32′, a diffuser plate 36′, and a reflective sheet 37′.

[0043] A diffuser plate 36' may be positioned between the frame 13 (see FIG. 2) and the display panel 11 (see FIG. 2). A substrate 31' may be positioned behind the diffuser plate 36' and may have a plate shape or may be composed of multiple straps. At least one light source 32' may be mounted on the substrate 31' and may provide light toward the rear surface of the diffuser plate 36'. The light source 32' may be a light-emitting diode (LED), and the substrate 31' may be a printed circuit board (PCB). A reflective sheet 37' may be positioned behind the diffuser plate 36' and may have holes 37a in which the light sources 32' are located. The reflective sheet 37' may reflect light provided from the light sources 32' or reflected by the diffuser plate 36' forward. A supporter 37b may protrude from the reflective sheet 37' toward the diffuser plate 36' and support the rear surface of the diffuser plate 36'. This allows the diffuser 36' to direct the light transmitted from the light source 32' forward.

[0044] The optical sheet 40 may include at least one sheet. For example, the optical sheet 40 may include at least one prism sheet and / or at least one diffusion sheet. Light from the diffusion plate 36′ can be provided to the display panel 11 (see FIG. 2) through the optical sheet 40.

[0045] 5 and 6, the foldable cover 20 may include a plurality of parts 21, 22, 23, and 24, and the plurality of parts 21, 22, 23, and 24 are foldably connected to each other.

[0046] First part 21 may form one end of foldable cover 20. First part 21 may extend in a direction parallel to the portion of outer frame 14 that forms second long side LS2, and may be detachably coupled to that portion of outer frame 14.

[0047] The second part 22 is foldably connected to the first part 21. A folding line FL1 is parallel to the horizontal direction between the second part 22 and the first part 21.

[0048] The third part 23 is foldably connected to the second part 22. A folding line FL2 between the third part 23 and the second part 22 is parallel to the horizontal direction.

[0049] The fourth part 24 is foldably connected to the third part 23. A folding line FL3 between the fourth part 24 and the third part 23 is parallel to the horizontal direction. The fourth part 24 may form the other end of the foldable cover 20.

[0050] 5, the first part 21 of the foldable cover 20 is coupled to the outer frame 14, and the second to fourth parts 22, 23, and 24 of the foldable cover 20 are folded from the first part 21 to cover the front surface of the display panel 11. Magnets 25 may be attached near the edge of the third part 23 and near the edge of the fourth part 24, and are magnetically coupled to the horizontal portion 14H of the outer frame 14 and / or the horizontal portion 12H of the inner frame 12 (see FIG. 2). As a result, the foldable cover 20 can maintain its state of covering the front surface of the display panel 11 unless a force above a certain level that can release the magnetic coupling is applied.

[0051] 6 , the first part 21 of the foldable cover 20 is coupled to the outer frame 14, and the second to fourth parts 22, 23, and 24 of the foldable cover 20 can be folded back behind the first part 21. An end of the fourth part 24 can be inserted into a groove provided on the rear surface of the back cover 15 or coupled to a holder provided on the rear surface of the back cover 15. This allows the foldable cover 20 to support the display 10. The foldable cover 20 may also be referred to as a stand 20.

[0052] Referring to FIG. 7, the foldable cover 20 of the display device 1 described above with reference to FIGS. 5 and 6 can be separated from the display 10 of the display device 1, and the strap 30 of the display device 1 can be detachably connected to the edge of the display 10.

[0053] The strap 30 may be elongated, and both ends of the strap 30 may be detachably coupled to the edges of the display 10. The strap 30 may include a first part 31 that forms one end of the strap 30 and a second part 32 that forms the other end of the strap 30.

[0054] For example, the strap 30A faces the first long side LS1 of the display 10, and the first part 31 is adjacent to the first short side SS1 and detachably connected to the first long side LS1 and / or the first short side SS1. The second part 32 is adjacent to the second short side SS2 and detachably connected to the first long side LS1 and / or the second short side SS2. The length of the strap 30A may be longer than the length of the first long side LS1 and may be bent. The bent portion of the strap 30A between the first part 31 and the second part 32 can be hung on a fixing member, such as a nail, on a wall. This allows the display device 1 to be installed on a wall with the long sides LS1 and LS2 parallel to the horizontal direction (i.e., parallel to the ground).

[0055] For example, the strap 30B faces the first short side SS1 of the display 10, and the first part 31 is adjacent to the second long side LS2 and detachably connected to the first short side SS1 and / or the second long side LS2. The second part 32 is adjacent to the first long side LS1 and detachably connected to the first short side SS1 and / or the first long side LS1. The length of the strap 30B may be longer than the length of the first short side SS1 and may be bent. The bent portion of the strap 30B between the first part 31 and the second part 32 can be hung on a fixing member, such as a nail, on a wall. This allows the display device 1 to be installed on a wall with the short sides SS1 and SS2 parallel to the horizontal (i.e., parallel to the ground).

[0056] 8 and 9, electronic components may be coupled to the rear surface of the frame 13.

[0057] A power supply board P1 is adjacent to a left side 13L of the frame 13 and coupled to the rear of the frame 13. The power supply board P1 provides power to the display device 1. A timing controller board P2 is adjacent to a bottom side 13D of the frame 13 and coupled to the rear of the frame 13. The timing controller board P2 can provide a video signal to the display panel 11 (see FIG. 2). A main board P3 is adjacent to a right side 13R of the frame 13 and coupled to the rear of the frame 13. The main board P3 can control the configuration of the display device 1.

[0058] The communication module W is adjacent to the upper edge 13U of the frame 13 and is coupled to the rear of the frame 13. The communication module W can communicate wirelessly with an external device. The communication module W may include a Wi-Fi antenna and / or a Bluetooth antenna. The communication module W can transmit information about the display device 1 to the external device or receive information about the operation of the display device 1 from the external device.

[0059] The battery B is adjacent to the upper edge 13U of the frame 13 and is coupled to the rear of the frame 13. The battery B is rechargeable and provides power to the components of the display device 1 described above and below via the power supply board P1. A user can carry the display device 1 and use it.

[0060] The speaker 100 is adjacent to an edge of the frame 13 and coupled to the rear of the frame 13. The speaker 100 is adjacent to a lateral side of the frame 13 and can output sound toward the lateral side. The first speaker 100A is adjacent to a left side 13L of the frame 13 and coupled to the rear of the frame 13 and can output sound toward the left side of the display 10. The second speaker 100B is adjacent to a right side 13R of the frame 13 and coupled to the rear of the frame 13 and can output sound toward the right side of the display 10.

[0061] The speakers 100A and 100B may be closer to the upper side 13U of the frame 13 than to the lower side 13D. The battery B may be located between the speakers 100A and 100B. In the vertical direction, the height H1 of each of the speakers 100A and 100B may be less than half the height H3 of the frame 13. In the horizontal direction, the width W1 of each of the speakers 100A and 100B may be less than 1 / 5 of the width W3 of the frame 13. In the width direction of the frame 13, the frame 13 may be divided into a first section A1, a second section A2, a third section A3, a fourth section A4, and a fifth section A5. The first speaker 100A may be located in the first section A1, and the second speaker 100B may be located in the fifth section A5.

[0062] The speakers 100A and 100B may have the same structure and shape, and may face in opposite directions. The second speaker 100B may be similar to the first speaker 100A rotated 180 degrees around the z-axis (i.e., an axis parallel to the front-to-rear direction). Alternatively, the second speaker 100B may be symmetrical to the first speaker 100A. The description of the first speaker 100A is equally applicable to the second speaker 100B. The description of the second speaker 100B is equally applicable to the first speaker 100A.

[0063] 10 and 11, a speaker 100 may include a box 101. The box 101 may also be referred to as a speaker box 101, an enclosure 101, a housing 101, or a case 101. The box 101 may include a first box 1011 and a second box 1012.

[0064] The first box 1011 may also be referred to as a bottom box 1011, a rear box 1011, a rear case 1011, or a base 1011. The first box 1011 may include a bottom 1011A and a sidewall 1011B.

[0065] The bottom 1011A may form the rear surface of the first box 1011. The rear surface of the first box 1011 may be the bottom of the box 101. The bottom 1011A may have a rectangular plate shape with a notch formed on one side. A notch 1011D or a groove 1011D may be formed inside the bottom 1011A from the left side (or right side) of the bottom 1011A. The notch 1011D or the groove 1011D forms a rectangular hole.

[0066] The fixing portion 1011F may be formed on the bottom 1011A. The fixing portion 1011F may protrude forward from the bottom 1011A. The fixing portion 1011F may have a hollow cylinder shape, and a screw thread may be formed on the inner circumferential surface of the fixing portion 1011F. The fixing portions 1011Fa, 1011Fb, 1011Fc, 1011Fd, and 1011Fe may be spaced apart from one another.

[0067] The hole 1011H may be formed penetrating the bottom 1011A from front to back. The hole 1011H may be located in or near the center of the bottom 1011A. The hole 1011H may be a circular hole.

[0068] The ribs 1011R may be formed on the bottom 1011A. The ribs 1011Ra may be formed in a grid pattern. The annular ribs 1011Rb may be formed around the holes 1011H or may extend along the holes 1011H.

[0069] The coupling portion 1011P may be formed on the bottom 1011A. The coupling portion 1011P may protrude forward from the bottom 1011A. The coupling portion 1011P may be formed on the annular rib 1011Rb or adjacent to the annular rib 1011Rb. The multiple coupling portions 1011Pa, 1011Pb, 1011Pc, 1011Pd, and 1011Pe may be spaced apart from one another along the annular rib 1011Rb. At least some of the coupling portions 1011Pa and 1011Pc of the multiple coupling portions 1011Pa, 1011Pb, 1011Pc, 1011Pd, and 1011Pe may have a hollow cylinder shape, and threads may be formed on the inner circumferential surfaces of the coupling portions 1011Pa and 1011Pc. The remaining coupling portions 1011Pb, 1011Pd, and 1011Pe may also have a hollow cylinder shape. The coupling portion 1011P may also be called a boss 1011P.

[0070] The sidewalls 1011B may be bent forward from the edges of the bottom 1011A or may extend along the edges. The sidewalls 1011B may be formed along the periphery of the bottom 1011A. The insertion grooves 1011C may be formed at the front ends of the sidewalls 1011B or may extend along the sidewalls 1011B.

[0071] A pair of partition walls 1011W may be formed on the bottom 1011A and may be connected to the sidewalls 1011B. The pair of partition walls 1011W may be adjacent to the notch 1011D. A portion of the pair of partition walls 1011W may form a portion of the sidewall 1011B extending along the notch 1011D. A channel 1011V may be formed between the pair of partition walls 1011W. An inlet 1011Va of the channel 1011V may face a space in front of the bottom 1011A, and an outlet 1011Vb of the channel 1011V may be formed in the sidewall 1011B and face the outside. An insertion groove 1011C may be formed at a front end of the pair of partition walls 1011W and may extend along the pair of partition walls 1011W.

[0072] The second box 1012 may be referred to as a top box 1012, a front box 1012, a front case 1012, or a cover 1012. The second box 1012 may include a top 1012A and a sidewall 1012B.

[0073] The top 1012A may form the front surface of the second box 1012. The front surface of the second box 1012 may be the top of the box 101. The top 1012A may have a shape corresponding to the bottom 1011A (see FIG. 10). The top 1012A may have an overall rectangular plate shape.

[0074] The fixing portion 1012F may be formed on the rear surface of the top 1012 and may be aligned with the fixing portion 1011F (see FIG. 10 ). The fixing portion 1012F may protrude rearward from the top 1012. The fixing portion 1012F may have a hollow cylinder shape, and a screw thread may be formed on the inner circumferential surface of the fixing portion 1012F. Each of the fixing portions 1012Fa, 1012Fb, 1012Fc, 1012Fd, and 1012Fe may be located on each of the fixing portions 1011Fa, 1011Fb, 1011Fc, 1011Fd, and 1011Fe (see FIG. 10 ). A portion of the fixing portion 1011F may be inserted into the fixing portion 1012F, thereby allowing the fixing portions 1011F and 1012F to guide the coupling of the first and second boxes 1011 and 1012. A fastening member such as a screw may be inserted through the fixing portion 1011F and fastened to the fixing portion 1012F, thereby connecting the first box 1011 to the second box 1012.

[0075] The hole 1012H may be formed through the top 1012A from front to back, and may be located at or near the center of the top 1012A. The hole 1012H may be aligned with the hole 1011H (see FIG. 10). The hole 1012H may be a circular hole, and the diameter of the hole 1012H may be larger than the diameter of the hole 1011H.

[0076] The ribs 1012R may be formed on the rear surface of the top 1012A. The ribs 1012R may be formed in a grid pattern.

[0077] The support portion 1012S may be formed by pressing the top 1012A from the front to the rear. The hole 1012H may be formed in the support portion 1012S, and the support portion 1012S may be a ring-shaped stepped portion.

[0078] The coupling portions 1012P may be formed in the support portion 1012S. The coupling portions 1012P may be aligned with the coupling portions 1011P (see FIG. 10). Some of the coupling portions 1012Pa, 1012Pc may be provided as through-holes 1012Pa, 1012Pc that penetrate the support portion 1012S from front to back. The remaining coupling portions 1012Pb, 1012Pd, 1012Pe may protrude rearward from the rear surface of the support portion 1012S. The through-holes 1012Pa, 1012Pc may be aligned with holes in the coupling portions 1011Pa, 1011Pc, and the coupling portions 1011Pb, 1011Pd, 1011Pe may be inserted into the coupling portions 1012Pb, 1012Pd, 1012Pe.

[0079] The press unit 1012E may be formed by pressing the top 1012A from the front surface toward the rear. The press unit 1012E may have multiple steps. The press unit 1012E may include a first press unit 1012E1, a second press unit 1012E2, and a third press unit 1012E3. The first press unit 1012E1 may have a step that decreases rearward from the front surface of the top 1012A. The second press unit 1012E2 may have a step that decreases rearward from the front surface of the first press unit 1012E1. The third press unit 1012E3 may have a step that decreases rearward from the front surface of the second press unit 1012E2. The support unit 1012S may have a step that decreases rearward from the first press unit 1012E1 and / or the second press unit 1012E2. The third pressing portion 1012E3 may be positioned in the notch 1011D of the first box 1011. The insertion protrusion 1012C may be formed around the third pressing portion 1012E and may be inserted into the insertion groove 1011C (see FIG. 10) around the notch 1011D.

[0080] The sidewall 1012B may be bent backward from the edge of the top 1012A or may extend along the edge. The sidewall 1012B may be formed along the periphery of the top 1012A. The insertion protrusion 1012C may be formed at the rear end of the sidewall 1012B or may extend along the sidewall 1012B. The insertion protrusion 1012C is inserted into the insertion groove 1011C (see FIG. 10), so that the insertion protrusion 1012C and the insertion groove 1011C can guide the connection of the first and second boxes 1011 and 1012.

[0081] A pair of partition walls 1012W may be formed on the rear surface of the top 1012A and may be connected to the sidewalls 1012B. The pair of partition walls 1012W may be aligned with the pair of partition walls 1011W (see FIG. 10). A channel 1012V may be formed between the pair of partition walls 1012W. An inlet 1012Va of the channel 1012V may face the space behind the top 1012A, and an outlet 1012Vb of the channel 1012V may be formed in the sidewall 1012B and face the outside. An insertion protrusion 1012C may be formed on the front end of the pair of partition walls 1012W and may be inserted into an insertion groove 1011C (see FIG. 10) formed in the pair of partition walls 1011W.

[0082] 12 and 13, the first and second boxes 1011 and 1012 are coupled to each other to form the exterior of the speaker 100. An internal space 101S of the box 101 may be formed between the first box 1011 and the second box 1012. A flow path 1011V (see FIG. 10) between a pair of partition walls 1011W and a flow path 1012V (see FIG. 11) between a pair of partition walls 1012W provide a duct 101V connecting the internal space 101S of the box 101 to the outside. Air can pass through the duct 101V. An inlet of the duct 101V may face the internal space 101S of the box 101, and an outlet of the duct 101V may be formed on one side of the box 101 and face the outside. The duct 101V may also be referred to as a channel 101V.

[0083] The speaker frame 102F of the speaker unit 102 may be positioned on a support portion 1012S of the second box 1012. The support portion 1012S may be a groove formed along the speaker frame 102F. The speaker frame 102F may have an overall ring shape. The support portion 1012S may support the speaker frame 102F. The support portion 1012S may be positioned on a plurality of coupling portions 1011Pa, 1011Pb, 1011Pc, 1011Pd, and 1011Pe (see FIG. 10).

[0084] At least one coupling hole 102P may be formed in the speaker frame 102F and may be aligned with the coupling portions 1012P and 1011P. The coupling hole 102P may be formed in a coupling portion (no reference numeral) protruding from the outer circumferential surface of the speaker frame 102F in the radial direction of the frame 102F. A first coupling hole 102Pa may be aligned with the first through-hole 1012Pa and the hole of the first coupling portion 1011Pa, and a first fastening member Fa, such as a screw, is fastened to the hole of the first coupling portion 1011Pa by passing through the first coupling hole 102Pa and the first through-hole 1012Pa. The second coupling holes 102Pc may be aligned with the second through holes 1012Pc (see FIG. 11) and the holes of the second coupling portion 1011Pc (see FIG. 10), and a second fastening member Fc such as a screw passes through the second coupling holes 102Pc and the second through holes 1012Pc and is fastened to the holes of the second coupling portion 1011Pc. For example, the first and second coupling holes 102Pa and 102Pc may be spaced apart from each other by 180 degrees.

[0085] As a result, the speaker frame 102F of the speaker unit 102 can be detachably coupled to the second box 1012 and the first box 1011.

[0086] The box 101 may have an overall flat rectangular box shape and may include a first side 101a, a second side 101b, a third side 101c, and a fourth side 101d. The first and second sides 101a and 101b may be opposite each other and may be long sides. The third and fourth sides 101c and 101d may be opposite each other and may be short sides. An outlet of the duct 101V may be formed in the first side 101a. An opening 101H may be formed in the first side 101a adjacent to the duct 101V. The opening 101H may be referred to as a speaker hole 101H.

[0087] The press portion 1012E may be formed around the periphery of the speaker frame 102F.

[0088] The first pressing section 1012E1 may form a step that decreases from the front surface of the second box 1012 to the rear. The first pressing section 1012E1 may include a connecting section 1012Ea and a recessed section 1012Eb. The connecting section 1012Ea may form a step that decreases from the front surface of the second box 1012 to the rear, and the recessed section 1012Eb may be recessed from the front surface of the connecting section 1012Ea. The connecting section 1012Ea may form the outer periphery of the first pressing section 1012E1, and the recessed section 1012Eb may form the inner periphery of the first pressing section 1012E1. With respect to the front surface of the second box 1012, the connecting section 1012Ea may have a first depth, and the recessed section 1012Eb may have a second depth greater than the first depth.

[0089] The coupling portion 1012Ea may be formed along an open ring that opens toward the opening 101H of the box 101. The coupling portion 1012Ea may include a first section 1012Eaa, a second section 1012Eab, and a third section 1012Eac. The first to third sections 1012Eaa, 1012Eab, and 1012Eac may have a bulb shape as a whole. The first section 1012Eaa may be adjacent to the second side 101b of the box 101 and may extend along the semicircle of the speaker frame 102F. The second section 1012Eab may extend from one end of the first section 1012Eaa toward the first side 101a of the box 101. The third section 1012Eac may extend from the other end of the first section 1012Eaa toward the first side 101a of the box 101. In the direction in which both ends of the first section 1012Eaa are spaced apart from each other, the distance between the second section 1012Eab and the third section 1012Eac may decrease as the section approaches the first side 101a. At least a portion of the second section 1012Eab and at least a portion of the third section 1012Eac may be curved. The region between the second and third sections 1012Eab and 1012Eac may include a tapered region R1 whose width decreases as the section approaches the opening 101H, and a straight region R2 whose width is maintained constant.

[0090] The recessed portion 1012Eb may connect the coupling portion 1012Ea and the support portion 1012S and may be formed along an open ring that opens toward the opening 101H. The recessed portion 1012Eb may include a first part 1012Eba, a second part 1012Ebb, and a third part 1012Ebc. The first part 1012Eba may be connected to the first section 1012Eaa and may extend along an arc that is smaller than a semicircle of the speaker frame 102F. A groove 1012Eg may be formed in the first part 1012Eba corresponding to the coupling portion of the speaker frame 102F to which the first fastening member Fa is coupled. The second part 1012Ebb may be adjacent to one end of the first part 1012Eba and connected to the second section 1012Eab. The third part 1012Ebc may be adjacent to the other end of the first part 1012Eba and connected to the third section 1012Eac. The first to third parts 1012Eba, 1012Ebb, and 1012Ebc may be located in a space between a portion of the coupling portion 1012Ea and a portion of the speaker frame 102F. A first groove 1012Sa may be formed between the first part 1012Eba and the second part 1012Ebb, and the first holder 102F1 protruding from the speaker frame 102F may be located in the first groove 1012Sa. A first hole may be formed in the first groove 1012Sa, and a tinsel wire connected to the coil 102e may pass through the first hole. The second groove 1012Sb may be formed between the first part 1012Eba and the third part 1012Ebc, and the second holder 102F2 protruding from the speaker frame 102F may be located in the second groove 1012Sb. A second hole may be formed in the second groove 1012Sb, and a tinsel wire connected to the coil 102e may pass through the second hole.

[0091] The second pressed portion 1012E2 may be located between the speaker frame 102F and the opening 101H, and may form a step that descends rearward from the recessed portion 1012Eb of the first pressed portion 1012E1. The support portion 1012S may form a step that descends rearward from the recessed portion 1012Eb of the first pressed portion 1012E1 and the second pressed portion 1012E2. The speaker frame 102F may be located on the support portion 1012S, and may form a step that descends rearward from the recessed portion 1012Eb.

[0092] The third pressing portion 1012E3 may be located between the second pressing portion 1012E2 and the opening 101H, and may form a step that is lower rearward from the second pressing portion 1012E. The third pressing portion 1012E3 may be located in the notch 1011D.

[0093] 14 and 15, the speaker unit 102 may be located in the holes 1011H and 1012H of the box 101. The speaker unit 102 may include a speaker frame 102F, a yoke 102a, a magnet 102b, a plate 102c, a bobbin 102d, a coil 102e, a diaphragm 102g, a damper 102h, and an edge 102i.

[0094] The yoke 102a forms one side of the speaker unit 102. The yoke 102a may be located in a hole 1011H of the first box 1011. The yoke 102a may have a cup shape that opens forward.

[0095] The magnet 102b may be disposed inside the yoke 102a. The magnet 102b may have a coin shape. The plate 102c may be bonded onto the magnet 102b and may have a shape corresponding to the magnet 102b.

[0096] The bobbin 102d may be located in the air gap between the plate 102c and the yoke 102a and may have a hollow cylindrical shape. The coil 102e may be formed or wound around the outer periphery of the bobbin 102d and may be referred to as a voice coil 102e.

[0097] The diaphragm 102g may be coupled to the front of the bobbin 102d. The diaphragm 102g may have a flat disk shape. Alternatively, the diaphragm 102g may have a dome or cone shape. The cone-shaped diaphragm 102g may be referred to as cone paper 102g. An elastic damper 102h may be coupled to the speaker frame 102F, and the damper 102h may be coupled to the diaphragm 102g or the bobbin 102d to support the diaphragm 102g.

[0098] The edge 102i may be located between the diaphragm 102g and the speaker frame 102F. The edge 102i may be bonded to the outer surface of the diaphragm 102g and the inner surface of the speaker frame 102F. The edge 102i may have elasticity and support the movement of the diaphragm 102g. The edge 102i may also be referred to as a speaker edge 102i or a surround 102i.

[0099] When magnetic field lines are formed in the gap between the magnet 102b and the yoke 102a and a current flows through the coil 102e, a Lorentz force is generated. The strength of the Lorentz force is proportional to the size of the magnetic field lines (magnetic flux density), the amount of current, and the length of the wound coil, and the direction of the force can be perpendicular to the plane formed by the magnetic flux density and the current.

[0100] This allows the diaphragm 102g to vibrate back and forth. Corresponding to the vibration of the diaphragm 102g, the air inside the speaker box 101 also resonates, causing the pressure therein to change.

[0101] The speaker frame 102F may include a support part 102Fa and a recessed part 102Fb. The support part 102Fa may be located on the support portion 1012S. The recessed part 102Fb may be recessed from the front surface of the support part 102Fa. The edge 102i may include a first part 102ia coupled to the recessed part 102Fb, a second part 102ib coupled to the diaphragm 102g, and a wave-shaped third part 102ic connecting the first part 102ia and the second part 102ib. The front surface of the first part 102ia may be parallel to the front surface of the support part 102Fa.

[0102] The plate 104 may be positioned on the coupling portion 1012Ea (see FIG. 12) of the first pressed portion 1012E1 and may cover the front of the speaker unit 102. The plate 104 may be spaced apart from the recessed portion 1012Eb (see FIG. 12) of the first pressed portion 1012E1. The plate 104 may include a metal material such as iron (Fe). The periphery of the plate 104 may be formed along the coupling portion 1012Ea. The plate 104 may have an overall bulb shape. The plate 104 may be attached or bonded to the coupling portion 1012Ea. In this way, the plate 104 can be coupled to the box 101.

[0103] The fixing portion 1012D (see FIG. 13) may be located inside the frame of the plate 104. The fixing portion 1012D may be formed in the pressing portion 1012E. The front end of the fixing portion 1012D may be parallel to the front surface of the connecting portion 1012Ea. That is, the depth of the front end of the fixing portion 1012D relative to the front surface of the second box 1012 may be the same as the depth of the front surface of the connecting portion 1012Ea, and may be smaller than the front end of the recessed portion 1012Eb. This allows the plate 104 to be positioned on the connecting portion 1012Ea and the fixing portion 1012D.

[0104] The first fixing portion 1012Da (see FIG. 13) may protrude forward from the recessed portion 1012Eb and may have a screw fastening hole. The second fixing portion 1012Db (see FIG. 13) may protrude forward from the second pressed portion 1012E2 and may have a screw fastening hole. The third fixing portion 1012Dc (see FIG. 13) may protrude forward from the second pressed portion 1012E2 and may have a screw fastening hole. The first to third fixing portions 1012Da, 1012Db, and 1012Dc may be located at the vertices of a triangle (see dotted lines in FIG. 15). Fastening members F1, F2, and F3, such as screws, pass through the plate 104 and are fastened to the first to third fixing portions 1012Da, 1012Db, and 1012Dc. Alternatively, the plate 104 may be attached or bonded to the first to third fixing portions 1012Da, 1012Db, and 1012Dc.

[0105] This allows the plate 104 to be firmly connected to the box 101, thereby minimizing shaking of the plate 104 and improving stability. Also, contact between the plate 104 and the recess 1012Eb can be minimized or prevented.

[0106] The diaphragm 102g of the speaker unit 102 vibrates back and forth to output sound toward the plate 104. The plate 104 can guide the sound from the speaker unit 102 toward the opening 101H. The opening 101H may be an outlet of a chamber 101P between the speaker unit 102 and the plate 104, and may be formed between the plate 104 and the third press part 1012E3. The chamber 101P may also be referred to as a space 101P.

[0107] The cushion 103 may be located between the speaker frame 102F and the plate 104 of the speaker unit 102. The cushion 103 may be opposite the opening 101H. The cushion 103 may extend along the first part 1012Eba of the recess 1012Eb and may have an arc shape. The cushion 103 may be curved. The cushion 103 may be rounded. The rear surface of the cushion 103 may contact the speaker frame 102F. The rear surface of the cushion 103 may be bonded to the speaker frame 102F. The rear surface of the cushion 103 may be bonded to the support part 102Fa of the speaker frame 102F and the first part 102ia of the edge 102i. The front surface of the cushion 103 may contact the plate 104. The front surface of the cushion 103 may be bonded to the plate 104. When an external force is applied in the thickness direction of the cushion 103, the cushion 103 is compressed in the thickness direction. When the external force is released, the cushion 103 returns to its original state. The original thickness of the cushion 103 may be equal to or greater than the distance between the speaker frame 102F and the plate 104. The cushion 103 may be pressed by the plate 104. For example, the cushion 103 may be made of an EVA (ethylene-vinyl acetate) material.

[0108] As a result, the cushion 103 may occupy a part of the chamber 101P between the speaker unit 102 and the plate 104. The cushion 103 can reduce vibration of the plate 104.

[0109] 16 and 17, the center line CL may pass through the center of the diaphragm 102g of the speaker unit 102 and extend in the radial direction of the diaphragm 102g. The center line CL may intersect with the sound output direction SD of the speaker 100. The sound output direction SD may be the direction in which sound output from the speaker unit 102 is guided by the plate 104 (see FIG. 15) and output to the outside through the opening 101H. The sound output direction SD of the first speaker 100A (see FIG. 8) may be the left side of the first speaker 100A, and the sound output direction SD of the second speaker 100B (see FIG. 8) may be the right side of the second speaker 100B. If the speaker output direction SD is parallel to the horizontal direction, the center line CL may be parallel to the vertical direction.

[0110] The recessed portion 1012Eb may form a step that rises forward from the support portion 1012S on which the speaker frame 102F is located. The recessed portion 1012Eb may be closer to the plate 104 than the speaker frame 102F, but may be spaced apart from the plate 104. The first part 1012Eba may be located between the center line CL and the second side 101b of the box 101, and may have an arc shape that is smaller than a semicircle. The second and third parts 1012Ebb and 1012Ebc may be located between the center line CL and the first side 101a of the box 101.

[0111] As a result, the recess 1012Eb may occupy a part of the chamber 101P between the speaker unit 102 and the plate 104, between the speaker frame 102F and the coupling portion 1012Ea. Meanwhile, the third part 1012Ebc may include a groove corresponding to the coupling portion of the speaker frame 102F to which the second fastening member Fc is coupled.

[0112] The second part 1012Ebb may include a straight side 1012Ebbs that faces the chamber 101P between the second and third press parts 1012E2 and 1012E3 and the plate 104 and extends in the sound output direction SD. The third part 1012Ebc may include a straight side 1012Ebcs that faces the chamber 101P between the second and third press parts 1012E2 and 1012E3 and the plate 104 and extends in the sound output direction SD. The distance between the straight sides 1012Ebbs and 1012Ebcs may be constant. The distance between the straight sides 1012Ebbs and 1012Ebcs may be the same as the width of the straight region R2.

[0113] The width Wb of the opening 101H may be the same as the width of the straight region R2. At the center line CL, both ends of the first section 1012Eaa of the coupling portion 1012Ea may be spaced apart from each other by a certain distance Wa. The width Wb may be smaller than the distance Wa. The width of the speaker unit 102 corresponds to the distance Wa. The width of the speaker unit 102 may be the same as or slightly smaller than the distance Wa.

[0114] As a result, the width Wb of the opening 101H may be smaller than the width of the speaker unit 102. The plate 104 may have a first width W11 (see FIG. 15) corresponding to the distance Wa, and may have a second width W12 (see FIG. 15) corresponding to the width Wb. The second width W12 may be smaller than the first width W11.

[0115] A stepped portion 1012T may be formed between the second pressing portion 1012E2 and the third pressing portion 1012E3. The stepped portion 1012T may form an obtuse angle with the front surface of the third pressing portion 1012E (see FIG. 14). The stepped portion 1012T may also be referred to as an inclined portion 1012T.

[0116] 8, the speaker 100 occupies a relatively small area due to the battery B etc. mounted on the frame 13. That is, the box 101 of the speaker 100 may have a relatively small volume.

[0117] 18, the speaker unit 102 of the speaker 100 has a certain level of bass reproduction band to cover the relatively small volume of the speaker box 101. The speaker 100 may be a full-range speaker. For example, the bass reproduction band may be a band below about 270 to 300 Hz, and the treble reproduction band may be a band above about 1 kHz.

[0118] 12 to 17, speaker 100 can reduce the space between speaker unit 102 and plate 104. In this case, the high-frequency characteristics of speaker 100 can be improved (see the solid line graph in FIG. 18) compared to when cushion 103 and recessed portion 1012Eb are not provided (see the dotted line graph in FIG. 18).

[0119] Speaker 100 may include step portion 1012T as described above with reference to Figures 12 to 17. In this case, the sound quality of speaker 100 can be improved (see solid line graph in Figure 18) compared to when step portion 1012T is not included (see dotted line graph in Figure 18).

[0120] 19 and 12, the coupling portion 110 may be formed on one side of the speaker box 101. The first coupling portion 110A may be formed on the third side 101c of the speaker box 101, and the second coupling portion 110B may be formed on the fourth side 101d of the speaker box 101. The coupling portion 110 may include a base 111, a protrusion 112, and stoppers 113 and 114. The base 111 may be formed on one side of the speaker box 101 or may be flat. The protrusion 112 may protrude forward from the base 111. The stoppers 113 and 114 may be formed at the end of the protrusion 112 or may be spaced apart from each other. The stoppers 113 and 114 may have a hook shape.

[0121] The holder 120 may include a body 120c, a neck 120a, and a head 120b. The holder 120 may be elastic. The holder 120 may include a soft material such as rubber or a cylinder. The body 120c may be positioned on the base 111, and the neck 120a may protrude forward from the body 120c. The head 120b may protrude from the end of the neck 120a in the radial direction of the neck 120a. A serration-shaped protrusion 120P may be formed on a side surface of the neck 120a. A serration-shaped protrusion 120Q may be formed on a side surface of the head 120b. The protrusion 112 passes through the body 120c, the neck 120a, and the head 120b, and the holder 120 is engaged with the stoppers 113 and 114. This allows the holder 120 to be coupled to the coupling part 110. The first holder 121 can be coupled to the first coupling part 110A, and the second holder 122 can be coupled to the second coupling part 110B.

[0122] 20 and 21, the fixing portion 130 may be formed by pressing from the front surface of the frame 13 toward the rear. The fixing portion 130 may also be referred to as a forming portion 130. The first fixing portion 130A and the second fixing portion 130B may be spaced apart from each other. The fixing portion 130 may include a fixing body 131 and a fixing hole 132. The fixing body 131 may include an inclined portion 131a, a horizontal portion 131b, and a vertical portion 131c. The inclined portion 131a may protrude rearward from the rear surface of the frame 13 and have a smaller diameter as it extends away from the rear surface. The horizontal portion 131b may be bent from an end of the inclined portion 131a toward the inside of the inclined portion 131a or may have a ring shape parallel to the rear surface of the frame 13. The vertical portion 131c may be bent from an end of the horizontal portion 131b toward the rear surface of the frame 13. The horizontal portion 131 b and the vertical portion 131 c form the boundary of the fixing hole 132 .

[0123] The diameter Da of the neck 120a of the holder 120 may be equal to or smaller than the diameter Dh of the fixing hole 132. The diameter Db of the head 120b of the holder 120 may be greater than the diameter Dh of the fixing hole 132. The diameter Dc of the body 120c of the holder 120 may be greater than the diameter Dh of the fixing hole 132. The length of the neck 120a, i.e., the distance D20 between the body 120c and the head 120b, may be equal to or greater than the length Lac of the vertical portion 131c. When the neck 120a and the head 120b are inserted into the fixing part 130 through the fixing hole 132, the neck 120a is positioned in the fixing hole 132, the body 120c engages with the horizontal portion 131b, and the head 120b engages with the vertical portion 131c.

[0124] Thus, the holder 120 is coupled to the fixing portion 130 , and the speaker 100 coupled to the holder 120 can be mounted on the frame 13 .

[0125] The second box 1012 and the plate 104 of the speaker 100 may face the rear of the frame 13 (see FIG. 17). The front pad 100F (see FIG. 17) may be coupled or attached to the second box 1012 and the plate 104, or may be spaced apart from each other.

[0126] The first box 1011 of the speaker 100 may face the front surface of the back cover 15 (see FIG. 2) (see FIG. 9). The rear pad 100R (see FIG. 9) may be coupled or attached to the first box 1011, or may be spaced apart from each other.

[0127] Referring again to FIG. 9, the bracket 16 may extend along the periphery of the frame 13 and may be coupled to the rear surface of the frame 13 .

[0128] 22 and 23, the frame 13 may include a flat portion 13a, a pressed portion 13b, and a bent portion 13c. The flat portion 13a may form the majority of the frame 13 or may be formed flat. The pressed portion 13b may be formed adjacent to the periphery of the flat portion 13a by pressing the front surface of the flat portion 13a rearward. The pressed portion 13b may also be referred to as a bead 13b. The bent portion 13c may be bent forward from the pressed portion 13b and may form an edge of the frame 13.

[0129] The outer holes 14P may be formed in the vertical portion 14V of the outer frame 14 in correspondence with the sound output direction SD of the speaker 100. That is, the sound of the speaker 100 can be provided to the outside through the outer holes 14P.

[0130] The end of the plate 104 of the speaker 100 may face the step 13d between the flat portion 13a and the pressed portion 13b. That is, the speaker 100 can approach the vertical portion 14V of the outer frame 14 until it is interfered with by the step 13d.

[0131] The bracket 16 may include a first part 161 and a second part 162. The first part 161 may be coupled or fixed to the rear surface of the press part 13b. The second part 162 may be bent from the first part 161 and may be located between the vertical part 12Fa of the front cover 12F and the vertical part 14V of the outer frame 14.

[0132] The inclined portion 163 may form part of the first part 161 and may be located between the speaker 100 and the vertical portion 14V of the outer frame 14. The inclined portion 163 may face the opening 101H of the speaker 100 from the outside of the speaker 100. The inclined portion 163 may face the outlet of the duct 101V from the outside of the speaker 100. The length L3 of the inclined portion 163 may be greater than the sum of the width of the opening 101H and the width of the outlet of the duct 101V. The inclined portion 163 may be inclined with respect to the pressed portion 13b. The thickness of the inclined portion 163 may decrease as it approaches the speaker 100. An end 164 of the inclined portion 163 may be rounded.

[0133] The latch 165 may be formed on the first part 161. The latch 165 may be spaced apart from the inclined portion 163. The back cover 15 may be latch-coupled to the latch 165.

[0134] This allows the sound of the speaker 100 to be smoothly transmitted to the outer hole 14P. The characteristics of the midrange and treble ranges of the sound of the speaker 100 can be improved. The sound quality of the speaker 100 can be improved.

[0135] 1 to 23, a display device 1 may include: a display panel 11; a frame 13 located behind the display panel 11; and a speaker 100 coupled to the rear of the frame 13, and the speaker 100 may include: a speaker box 101; a speaker unit 102 coupled to the speaker box; a plate 104 covering the speaker unit and coupled to the speaker box 101; a chamber 101P formed between the speaker unit 102 and the plate 104 and open in one direction; and a cushion 103 occupying a portion of the chamber 101P.

[0136] The speaker unit 102 may include: a speaker frame 102F coupled to the speaker box 101; and a diaphragm 102g vibratably coupled to the speaker frame 102F, the plate 104 may cover the speaker frame 102F and the diaphragm 102g, and the cushion 103 may be positioned on the speaker frame 102F.

[0137] The plate 104 may press the cushion 103 towards the speaker frame 102F.

[0138] The speaker frame 102F may have a ring shape, and the cushion 103 may be opposite to the opening 101H of the chamber 101P and may extend along the speaker frame 102F to have an arc shape.

[0139] The speaker box 101 may include: a connecting portion 1012Ea where the plate 104 is located; a recessed portion 1012Eb recessed from the connecting portion 1012Ea; and a support portion 1012S forming a step lower than the recessed portion 1012Eb and where the speaker frame 102F is located, and the recessed portion 1012Eb may occupy a portion of the chamber 101P between the connecting portion 1012Ea and the support portion 1012S.

[0140] The depth of the recess 1012Eb relative to the coupling portion 1012Ea may be smaller than the depth of the speaker frame 102F.

[0141] The speaker frame 102F may have a ring shape, and the recessed portion 1012Eb includes: a first part 1012Eba that faces the opening of the chamber 101P, extends along the speaker frame 102F, and has an arc shape; a second part 1012Ebb that extends from one end of the first part 1012Eba toward the opening 101H; and a third part 1012Ebc that extends from the other end of the first part 1012Eba toward the opening 101H.

[0142] The opening 101H of the chamber 101P may be formed between the second part 1012Ebb and the third part 1012Ebc, and the distance between the second part 1012Ebb and the third part 1012Ebc may be smaller than the width of the speaker frame 102F.

[0143] The speaker box 101 may include: a connecting portion 1012Ea extending along the edge of the plate 104 and adjacent to the edge to support the plate 104, the speaker frame 102F may have a ring shape, and the connecting portion 1012Ea may include: a first section 1012Eaa facing the opening 101H of the chamber 101P and extending along the semicircle of the speaker frame; a second section 1012Eab extending from one end of the first section 1012Eaa toward the opening; and a third section 1012Eac extending from the other end of the first section 1012Eaa toward the opening 101H, and the distance between the second section 1012Eab and the third section 1012Eac may become smaller as they approach the opening 101H.

[0144] The speaker box 101 may further include a fixing portion 1012D located inside the connecting portion 1012Ea, spaced apart from each other, and supporting the plate 104, and the plate 104 may be connected to the connecting portion 1012Ea and the fixing portion 1012D.

[0145] The speaker box 101 may include: a first press part 1012E1 on which the plate 104 is positioned, forming a step that is lowered from one side of the speaker box 101; a second press part 1012E2 positioned between the speaker frame 102F and the opening 101H of the chamber 101P, forming a step that is lowered from the first press part 1012E1; a third press part 1012E3 positioned between the second press part 1012E2 and the opening 101H of the chamber 101P, forming a step that is lowered from the second press part 1012E2; and a support part 1012S on which the speaker frame 102F is positioned, forming a step that is lowered from the first press part 1012E1 and the second press part 1012E2.

[0146] The opening 101H of the chamber 101P may be formed between the plate 104 and the third press portion 1012E3, and the distance between the plate 104 and the third press portion 1012E3 may be greater than the distance between the plate 104 and the second press portion 1012E2.

[0147] The speaker 100 may further include a duct 101V adjacent to the opening 101H of the chamber 101P and providing a flow path connecting the inside and outside of the speaker box 101.

[0148] The display device 1 may further include: an outer frame 14 extending along the edge of the frame 13 and having a hole 14P facing the opening 101H of the chamber 101P; a bracket 16 adjacent to the edge of the frame 13 and connected to the frame 13; and a back cover 15 covering the rear of the frame, and the bracket 16 may include: an inclined portion 163 located between the hole 14P of the outer frame 14 and the opening 101H of the chamber 101P and having a length greater than the width of the opening 101H of the chamber 101P; and a latch 165 located outside the inclined portion 163 and to which the back cover 15 is connected, and the end of the inclined portion 163 facing the opening 101H of the chamber 101P may be rounded.

[0149] The display device 1 may further include: a battery B coupled to the rear of the frame 13; and the speaker 100 may include: a first speaker 100A positioned between a first side of the frame 13 and the battery B; and a second speaker 100B positioned between a second side of the frame 13 opposite the first side and the battery.

[0150] The above-described embodiments or other embodiments of the present disclosure are not mutually exclusive or distinct, and the respective configurations or functions of the above-described embodiments or other embodiments of the present disclosure may be used in combination.

[0151] For example, it means that a feature A illustrated in a particular embodiment and / or drawing can be combined with a feature B illustrated in another embodiment and / or drawing, that is, even if a direct description is not given of the combination between the components, it means that the combination is possible unless it is stated that the combination is impossible.

[0152] The above detailed description should not be construed as limiting in all respects but as illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all modifications within the equivalent range of the present invention are included in the scope of the present invention.

Claims

1. 1. A display device, comprising: Display panel; a frame positioned behind the display panel; and a speaker coupled to the rear of the frame; The speaker includes: Speaker box, a speaker unit coupled to the speaker box; a plate covering the speaker unit; a chamber formed between the speaker unit and the plate and open in one direction; and a cushion located within the chamber.

2. The speaker unit includes: a speaker frame coupled to the speaker box; and a diaphragm vibratably coupled to the speaker frame; the plate covers the speaker frame and the diaphragm; The display device of claim 1 , wherein the cushion is positioned on the speaker frame.

3. The display device according to claim 2 , wherein the cushion is positioned between the plate and the speaker frame and is pressed toward the speaker frame by the plate.

4. the speaker frame has a ring shape, The display device of claim 2 , wherein the cushion has an arc shape, extending along the speaker frame, opposite the opening of the chamber.

5. The speaker box includes: a joint where the plate is located; a recessed portion recessed from the joint portion; and a support portion on which the speaker frame is positioned, the support portion forming a step that is lower than the recessed portion, The display device of claim 2 , wherein the recess is located inside the chamber between the coupling portion and the support portion.

6. The display device of claim 5 , wherein the depth of the recessed portion is less than the depth of the speaker frame with respect to the coupling portion.

7. the speaker frame has a ring shape, The recessed portion is a first part extending along the speaker frame and having an arc shape, the first part facing the opening of the chamber; a second part extending from one end of the first part toward the opening; and The display device of claim 6 , further comprising a third part extending from the other end of the first part toward the opening.

8. the opening of the chamber is formed between the second part and the third part; The display device of claim 7 , wherein the distance between the second part and the third part is smaller than a width of the speaker frame.

9. the speaker box includes a coupling portion extending along an edge of the plate and supporting the plate adjacent to the edge; the speaker frame has a ring shape, The coupling portion is a first section extending along the semicircle of the speaker frame opposite the opening of the chamber; a second section extending from one end of the first section toward the opening; and a third section extending from the other end of the first section toward the opening, The display device of claim 2 , wherein the distance between the second section and the third section decreases toward the opening.

10. the speaker box further includes fixing portions positioned inside the coupling portions, spaced apart from each other, and supporting the plate; The display device of claim 9 , wherein the plate is coupled to the coupling portion and the fixing portion.

11. The speaker box includes: a first press portion that forms a step that is lowered from one surface of the speaker box and in which the plate is positioned; a second press portion positioned between the speaker frame and the opening of the chamber, forming a step lower than the first press portion; a third press portion located between the second press portion and the opening of the chamber and forming a step lower than the second press portion; and The display device according to claim 2 , further comprising a support portion on which the speaker frame is positioned, the support portion forming a step lower than the first press portion and the second press portion.

12. the opening of the chamber is formed between the plate and the third press part; The display device of claim 11 , wherein the spacing between the plate and the third press part is greater than the spacing between the plate and the second press part.

13. The display device of claim 1 , wherein the speaker further comprises a duct adjacent to the opening of the chamber and providing a flow path connecting the interior and exterior of the speaker box.

14. an outer frame extending along the edge of the frame; the outer frame has a hole facing the opening of the chamber; a bracket coupled to the frame adjacent the edge of the frame; and a back cover that covers the rear of the frame; The bracket is a sloped portion located between the hole of the outer frame and the opening of the chamber, the sloped portion having a length greater than a width of the opening of the chamber; and a latch located outside the inclined portion and to which the back cover is connected; The display device according to claim 1 , wherein an end of the inclined portion toward the opening of the chamber is rounded.

15. a battery coupled to the rear of the frame; The speaker includes: a first speaker positioned between the first side of the frame and the battery; and The display device of claim 1 , further comprising: a second speaker positioned between a second side of the frame opposite the first side and the battery.

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