Speaker and sound output device having speaker

Abstract

A sound output apparatus is provided. The sound output apparatus includes a main body, and a speaker accommodated in the main body. The speaker includes a vibration member configured to generate a sound wave, and a sound guide including a first end connected to the vibration member, a second end having an open structure, a first surface between the first end and the second end, and a plurality of openings formed through the first surface along a longitudinal direction of the sound guide. Sizes of the plurality of openings increase as a distance from the vibration member increases.

Description

[0001] Cross-references to related applications

[0002] This application is based on and claims priority to Korean Patent Application No. 10-2019-0140619, filed with the Korean Intellectual Property Office on November 6, 2019, the entire disclosure of which is incorporated herein by reference. Technical Field

[0003] This disclosure relates to a loudspeaker with increased directivity and a sound output device having the loudspeaker. Background Technology

[0004] A loudspeaker is a device that generates sound waves by vibrating in response to electrical signals transmitted from devices such as televisions and radios. Loudspeakers can be classified into two types: omnidirectional loudspeakers, which generate sound waves to emit sound with the same energy in all directions, without emitting sound in any particular direction; and highly directional loudspeakers, which generate sound waves to emit high-energy sound in a particular direction.

[0005] In recent years, miniaturized and integrated home audio systems such as wireless speakers and soundbars have become increasingly popular. To allow users to experience sound in a wide sound field from these miniaturized and integrated speakers, highly directional speakers can extend the sound field by using sound waves reflected from surrounding walls.

[0006] Sound waves emitted toward the interior wall surface can be reflected by the wall and reach the user, thus creating an auditory illusion when the sound waves come from the user's side. However, additional speakers or acoustic structures may be needed to expand the sound field, requiring additional cost or space. Summary of the Invention

[0007] The embodiments of this disclosure overcome the above-described disadvantages and other disadvantages not described above. Furthermore, this disclosure does not require overcoming the above-described disadvantages, and the embodiments of this disclosure may not overcome any of the above-described problems.

[0008] One or more embodiments provide a loudspeaker with an enhanced sound field or spatial image using multiple openings, and a sound output device having the loudspeaker.

[0009] According to one aspect of this disclosure, a loudspeaker includes: a vibrating member configured to generate sound waves; and a sound guide including a first end connected to the vibrating member, a second end having an open structure, a first surface between the first and second ends, and a plurality of openings formed through the first surface along a longitudinal direction of the sound guide. The size of the plurality of openings increases with increasing distance from the vibrating member.

[0010] The cross-section of the sound guide can be one of the following shapes: circular, elliptical, or polygonal.

[0011] The cross-sectional area of the sound guide can increase along the longitudinal direction as the distance from the vibration member increases.

[0012] The size of the plurality of openings can increase along the longitudinal direction based on a non-linear ratio as the distance from the vibration member increases.

[0013] The plurality of openings can include a plurality of first openings whose size increases along the longitudinal direction based on a predetermined ratio as the distance from the vibration member increases, and a plurality of second openings disposed behind the plurality of first openings and whose size corresponds to one of the plurality of first openings.

[0014] The plurality of openings can be disposed in each of a plurality of rows along the longitudinal direction.

[0015] The plurality of openings can each have one of a circular shape, an elliptical shape, a rectangular shape, a square shape, and a diamond shape.

[0016] The plurality of openings can be spaced apart from each other by a predetermined interval.

[0017] The interval between the plurality of openings can decrease as the distance from the vibration member increases.

[0018] The sound guide can further include a second surface facing the first surface between the first end and the second end, and the second surface can curve away from the first surface as the distance from the vibration member increases.

[0019] According to an aspect of the disclosure, a sound output device includes a body, and a speaker accommodated in the body. The speaker includes a vibration member configured to generate a sound wave, and a sound guide including a first end connected to the vibration member, a second end having an open structure, a first surface between the first end and the second end, and a plurality of openings formed through the first surface along a longitudinal direction of the sound guide. The size of the plurality of openings increases as the distance from the vibration member increases.

[0020] The cross-section of the sound guide can have one of a circular shape, an elliptical shape, and a polygonal shape.

[0021] The cross-sectional area of the sound guide can increase along the longitudinal direction as the distance from the vibration member increases.

[0022] The size of the plurality of openings can increase along the longitudinal direction based on a non-linear ratio as the distance from the vibration member increases.

[0023] The plurality of openings can include a plurality of first openings having a size that increases based on a predetermined ratio as a distance from the vibration member increases along the longitudinal direction, and a plurality of second openings disposed behind the plurality of first openings and having a size corresponding to one of the plurality of first openings.

[0024] The plurality of openings can be disposed in each of a plurality of rows along the longitudinal direction.

[0025] The plurality of openings can each have one of a circular shape, an elliptical shape, a rectangular shape, a square shape, and a diamond shape.

[0026] The plurality of openings can be spaced apart from each other by a predetermined interval.

[0027] The interval between the plurality of openings can decrease as a distance from the vibration member increases.

[0028] The body can have a bar shape, and the speaker can be accommodated in a first end of the body, and another speaker can be accommodated in a second end of the body.

[0029] According to an aspect of the disclosure, a speaker includes a vibration member configured to generate a sound wave, and a sound guide including a first end connected to the vibration member, a second end having an open structure, a first surface between the first end and the second end, and a plurality of openings formed through the first surface along a longitudinal direction of the sound guide. A size of the plurality of openings increases as a distance from the first end increases.

[0030] According to an aspect of the disclosure, a speaker includes a sound guide including a first end, a second end having an open structure, a first surface between the first end and the second end, and a plurality of openings formed through the first surface along a longitudinal direction of the sound guide. A size of the plurality of openings increases as a distance from the first end increases.

[0031] Additional and / or other aspects and advantages of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or can be learned by practice of the disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0032] The above-described and / or other aspects, features, and advantages of some embodiments of the disclosure will be more apparent from the following description taken in conjunction with the accompanying drawings, in which:

[0033] Figure 1 is a perspective view of a sound output device according to an embodiment;

[0034] Figure 2 is a view of directivity of a sound wave according to an embodiment;

[0035] Figure 3is a perspective view of a speaker according to an embodiment;

[0036] Figure 4 is an exploded perspective view of a speaker according to an embodiment;

[0037] Figure 5 is a perspective view of a sound guide according to a modified embodiment;

[0038] Figure 6 is a perspective view of a speaker according to an embodiment Figure 3 is a cross-sectional view of a speaker 100 according to an embodiment;

[0039] Figure 7 is a top view of a sound guide according to a modified embodiment;

[0040] Figure 8 is a top view of a sound guide according to a modified embodiment;

[0041] Figure 9 is a top view of a sound guide according to a modified embodiment;

[0042] Figure 10 is a top view of a sound guide according to a modified embodiment of the disclosure;

[0043] Figure 11 is a top view of a sound guide according to a modified embodiment; and

[0044] Figure 12 is a top view of a sound guide according to a modified embodiment. DETAILED DESCRIPTION

[0045] In order to fully understand the configuration and effects of the disclosure, embodiments of the disclosure are described with reference to the accompanying drawings. However, the disclosure is not limited to the embodiments described below, but can be implemented in several forms and can be variously modified. The description is provided only to make the disclosure complete and allow those skilled in the art to which the disclosure pertains to fully appreciate the scope of the disclosure. In the drawings, the size of components can be exaggerated for convenience of explanation, and the ratio of the individual components can be enlarged or reduced.

[0046] It should be understood that when one component is referred to as being "on" or "in contact with" another component, it can be directly in contact with or connected to the other component, or can be in contact with or connected to the other component with other components interposed therebetween. In contrast, if one component is described as being "directly on" or "directly in contact with" another component, it should be understood that no other component is interposed therebetween. Other expressions describing the relationship between components, such as "between" and "directly between", can be interpreted in the same manner.

[0047] As used herein, the terms "first" or "primary" and "second" or "secondary" can use corresponding components regardless of importance or order, and are used to distinguish one component from another component without limiting the components. For example, without departing from the scope of the disclosure, a "first" component can be named as a "second" component, and a "second" component can also be similarly named as a "first" component.

[0048] The singular form also is intended to include the plural forms unless the context clearly indicates otherwise. It will be understood that the terms "comprises", "has", "includes", and the like specified the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.

[0049] The terms used herein, unless defined otherwise, can be interpreted as known by one of ordinary skill in the art.

[0050] Figure 1 is a perspective view of a sound output apparatus 1 according to an embodiment.

[0051] The following description will describe the structure of a speaker and a sound output apparatus including a plurality of speakers according to an embodiment in detail with reference to the accompanying drawings.

[0052] The sound output apparatus 1 can include a main body 2 and a plurality of speakers 100. Here, the sound output apparatus 1 can be an electronic device having a speaker, for example, a home theater system (HTS), a soundbar, a television, a digital television, a radio, a personal computer, a laptop computer, etc.

[0053] The main body 2 can form an outer shape of the sound output apparatus 1, and can accommodate the plurality of speakers 100. Figure 1 It is shown that the main body 2 includes only two speakers. However, the embodiment is not limited thereto, and the main body 2 can be implemented to include one speaker or three or more speakers. In addition, the main body can include two speakers and a separate woofer.

[0054] In detail, as shown in Figure 1 The main body 2 can have a bar shape. In addition, the plurality of speakers 100 can be arranged in the main body 2.

[0055] Accordingly, the sound output apparatus 1 can emit sound waves generated from the speakers 100 in a predetermined direction toward an interior wall surface and a ceiling of a room, thereby improving the directivity and a spatial image of the sound output apparatus 1.

[0056] However, the outer shape of the main body 2 is not limited to a bar shape, and according to embodiments, the outer shape can be variously modified to various shapes as needed. In addition, the plurality of speakers 100 accommodated in the main body 2 can be variously arranged in the main body 2 to improve directivity toward a wall surface and a ceiling.

[0057] The plurality of speakers 100 can each generate a sound wave and output the sound wave generated in a predetermined direction. In detail, a user can be located in a direction facing a front surface 1XY of the sound output apparatus 1 or the main body 2, and the sound output apparatus 1 can emit the generated sound wave toward a diagonal direction of one side surface 1XX of the main body 2 and a top surface 1XZ of the main body 2. The sound output apparatus 1 can emit the sound wave in a predetermined direction, thereby providing the generated sound wave to a user located at a position spaced apart from the sound output apparatus 1 in a direction facing the front surface 1XY of the sound output apparatus 1.

[0058] The plurality of speakers 100 can each output a sound wave different from each other or a sound wave identical to each other. The specific structure and operation of the speaker are described below with reference to Figures 3 to 6

[0059] Figure 2 is a view of directivity of a sound wave according to an embodiment.

[0060] In general, a cannon speaker can emit a highly directional sound wave by attaching a tube having a horn structure or a sound structure to a vibrating member or a speaker unit having an omnidirectional feature. The cannon speaker can emit a sound wave toward a side direction rather than a front direction facing a direction in which a user is located.

[0061] The sound output apparatus 1 according to an embodiment can not only emit a sound wave in a sound wave emission direction D1 of a cannon speaker (i.e., a side direction), but also emit a sound wave in a diagonal direction D2 upward from the emission direction. Accordingly, the sound output apparatus 1 can provide a richer spatial image than an ordinary cannon speaker. The sound output apparatus 1 can indirectly transmit a sound wave to a user, thereby allowing the user to have an enhanced sound wave spatial image and auditory illusion.

[0062] Meanwhile, Figure 1 and Figure 2 The sound output apparatus 1 is shown and described as performing only a function of outputting a sound wave. However, embodiments are not limited thereto, and the sound output apparatus 1 can further include another component (e.g., a display).

[0063] In addition, Figure 1 Only a mechanical configuration of the sound output apparatus 1 is shown. However, embodiments are not limited thereto, and the sound output apparatus 1 can further include a communication apparatus that receives sound source data from the outside and an amplifier that drives the vibrating member 110 based on the received sound source data. ​

[0064] Figure 3 is a perspective view of a speaker 100 according to an embodiment; Figure 4 is an exploded perspective view of a speaker 100 according to an embodiment; Figure 5 is a perspective view of a sound guide 120 according to a modified embodiment; and Figure 6 is a perspective view of a speaker 100 according to an embodiment Figure 3 is a cross-sectional view of a speaker 100 of FIG. 1.

[0065] Hereinafter, a specific structure of a speaker 100 will be described with reference to Figures 3 to 6 FIG. 1.

[0066] According to an embodiment, the speaker 100 is a directional speaker that generates a sound wave in a specific direction (e.g., a longitudinal direction, a direction diagonal to the longitudinal direction), and can include a vibration member 110 that generates a sound wave, and a sound guide 120 that serves as an outlet that emits the sound wave.

[0067] The vibration member 110 can generate a sound wave. In detail, the vibration member 110 can generate a sound wave by vibrating based on an amplified signal corresponding to a sound source content stored in the sound output device 1 or a sound source content provided from the outside. For example, the vibration member 110 can be implemented by a permanent magnet method, a voice coil method, or an electrodynamic method. Also, the vibration member 110 can be referred to as a speaker unit or a unit.

[0068] Referring to Figure 4 , one end 101 of the sound guide 120 is connected to the vibration member 110, and the sound guide 120 can be formed to extend from the one end 101 connected to the vibration member 110. Also, the sound guide 120 can have another end 102 having an open structure. Also, the sound guide 120 can have a plurality of openings 121 formed through one surface, which are arranged in a predetermined pattern along a longitudinal direction of the sound guide 120. The plurality of openings 121 will be described below with reference to Figure 5 .

[0069] Here, the longitudinal direction of the sound guide 120 can refer to a direction away from the vibration member 110. For example, the longitudinal direction can refer to a direction from the one end connected to the vibration member 110 to the other end having the open structure. For example, the longitudinal direction can be perpendicular to the vibration member 110.

[0070] Accordingly, the sound guide 120 can transmit a sound wave generated from the vibration member 110 to the outside. In particular, the sound guide 120 can guide the sound wave in two specific directions (e.g., a longitudinal direction and a direction diagonal to the longitudinal direction), thereby allowing the sound wave to have a directivity toward the above-described specific directions.

[0071] Also, asFigure 3 As shown, the inner cross-sectional area of the sound guide 120 can increase as the distance from the vibration member 110 increases along the longitudinal direction of the sound guide 120. That is, one end 101 of the sound guide 120 can have the smallest inner cross-sectional area among the cross-sectional areas of the sound guide 120, and the other end 102 of the sound guide 120 can have the largest inner cross-sectional area among the cross-sectional areas of the sound guide 120.

[0072] Further, the inner cross-sectional area of the sound guide 120 can continuously increase as the distance from the vibration member 110 increases. Alternatively, the inner cross-section of the sound guide 120 can have a constant cross-sectional area from one end 101 of the sound guide 120 to a position that is a predetermined distance away from the vibration member 110, and can have a variable cross-sectional area that increases as the distance from the vibration member 110 increases from the position to the other end 102 of the sound guide 120. In this way, the inner cross-sectional area of the sound guide 120 can be variously formed.

[0073] Further, the cross-section of the sound guide 120 can be fixed to a specific shape, such as a circular shape, an elliptical shape, a curved shape, and a polygonal shape. Alternatively, the cross-section of the sound guide 120 can have a shape in which the cross-sectional shape and the cross-sectional area continuously change for each position of the cross-section as the sound guide becomes farther from the vibration member 110.

[0074] In particular, as Figure 5 As shown, the cross-section of the sound guide 120-1 can have a polygonal shape. In detail, the cross-section of the sound guide 120-1 can have a rectangular shape from one end of the cross-section of the sound guide connected to the vibration member 110-1 to the other end having an open structure. Further, the inner cross-section of the sound guide 120-1 can gradually increase as the distance from the vibration member 110-1 increases.

[0075] However, these shapes are merely examples, and embodiments are not limited thereto. One end of the sound guide 120 can be implemented as a circular surface, and the other end of the sound guide 120 can have a square surface, or vice versa. That is, the cross-section of the sound guide 120 can have at least one of a circular shape, an elliptical shape, or a polygonal shape, and can be formed as a special pipe shape in which the cross-section of the sound guide 120 continuously changes based on the position of the cross-section formed in this shape.

[0076] The speaker 100 according to the modified embodiment can not only emit sound waves in the sound wave emission direction (i.e., the lateral direction) of a general horn speaker, but also emit sound waves in a diagonal direction upward from the emission direction, thereby providing a rich spatial image. In addition, the cross section of the sound guide 120-1 can have a square shape, so it can be easily included in the main body 2 at the time of production, and the production cost thereof can also be saved compared to the case where the cross section of the sound guide 120 has a circular shape.

[0077] In addition, as Figure 6 indicated, the sound guide 120 can include a sound guide space 103 connected with the plurality of openings 121.

[0078] The sound guide 120 can have a curved inner surface, thereby forming the sound guide space 103 therein. The sound guide space 103 can be formed as an empty region to serve as a passage through which sound waves generated from the vibration member 110 connected with one end of the sound guide 120 are emitted to the plurality of openings 121 and the other end 102 of the sound guide 120.

[0079] The sound guide 120 can be integrally formed by injection molding. Accordingly, the sound guide 120 can be produced without a separate assembly process, thereby reducing the production time and cost thereof. However, the embodiment is not limited to integrally forming the sound guide 120. The sound guide 120 can be formed by using a structure coupling method in which an upper portion and a lower portion are coupled to each other, and the sound guide 120 can be formed by various coupling methods and structures.

[0080] In addition, as the length of the sound guide 120 in which the plurality of openings 121 are formed becomes longer, the directivity toward the upper side, i.e., the ceiling, from the sound guide 120 can be lowered. Accordingly, the length of the sound guide 120 can be designed and implemented in consideration of the directivity of the speaker 100.

[0081] Hereinafter, a specific structure of the plurality of openings 121 is described with reference to Figure 3 and Figure 6 .

[0082] As Figure 6 indicated, the plurality of openings 121 can be arranged on one surface of the sound guide 120 in a predetermined pattern along the longitudinal direction of the sound guide 120. In addition, the plurality of openings 121 can be connected with the sound guide space 103.

[0083] Each of the plurality of openings 121 can have a size determined based on its position or its distance from the vibration member 110. The method for determining the size of each of the plurality of openings 121 can vary depending on the embodiment.

[0084] For example, as shown in FIG. 1A, the diameter of the plurality of openings 121 can increase as the distance from the vibration member 110 increases along the longitudinal direction of the sound guide 120. For example, an opening A17 of the plurality of openings 121 disposed farthest from the vibration member 110 can have the largest diameter. Also, an opening A1 of the plurality of openings 121 disposed closest to the vibration member 110 can have the smallest diameter. Figure 6

[0085] The relationship between the diameters of the plurality of openings 121 can be designed to be an optimal value through repeated experiments.

[0086] Also, the total surface area of the combination of the plurality of openings 121 increases, and the sensitivity of the sound wave can increase. However, the larger combined total surface area of the plurality of openings 121 reduces the directivity of the sound wave. Accordingly, the size of the plurality of openings 121 can be designed and implemented in consideration of the sensitivity and the directivity of the speaker 100.

[0087] A fabric material can be disposed in each of the plurality of openings 121 to function as an acoustic resistance. The fabric material can be used to fine-tune the characteristics of the sound wave emitted from each opening. For example, openings closer to the vibration member 110 can have thicker fabric materials, and openings farther from the vibration member 110 can have thinner fabric materials.

[0088] The above description illustrates that the thickness of the fabric material changes based on the distance of the opening from the vibration member. However, embodiments are not limited thereto, and the thickness of the fabric material can change based on the diameter of the opening.

[0089] In particular, an opening with a small thickness (e.g., the opening A1 close to the vibration member) can be covered by a thick fabric material, thereby functioning as a "sound wave characteristic adjuster" for improving the emission directivity of the sound wave component of the low frequency.

[0090] Also, the fabric material can be various materials including a jersey material.

[0091] Meanwhile, a small opening of the plurality of openings 121 can affect the emission of the sound wave in the low frequency band, and a large opening of the plurality of openings 121 can affect the emission of the sound wave in the high frequency band.

[0092] Accordingly, the speaker 100 can have openings of various sizes, rather than openings of the same size, thereby improving the overall directivity characteristics of the sound wave thereof from the low frequency band to the high frequency band.

[0093] Also, the plurality of openings 121 can be spaced apart from each other by a predetermined distance along the longitudinal direction of the sound guide 120. Here, the distance can refer to each interval between the openings of the plurality of openings 121. Figure 6 ​The first distance d1 to the sixteenth distance d16 shown can each refer to a gap between the openings.

[0094] Further, the distance between the openings disposed on the sound guide 120 close to the vibration member 110 can be the same as the distance between the openings disposed far from the vibration member 110. In detail, as shown in FIG. 2B, the first distance d1, the second distance d2, the fifteenth distance d15, and the sixteenth distance d16 can be distances identical to each other. Figure 6

[0095] According to another embodiment, the plurality of openings 121 farther from the vibration member 110 can be spaced apart from each other by a smaller distance than the openings closer to the vibration member 110. Alternatively, the plurality of openings 121 farther from the vibration member 110 can be spaced apart from each other by a larger distance than the openings closer to the vibration member 110.

[0096] Figures 7 to 11 FIGS. 2A and 2B are top views each showing a sound guide 120 according to a modified embodiment.

[0097] Figures 7 to 11 The plurality of openings 121a to 121d and the one slit 121e shown can each be formed through one surface of the sound guides 120a to 120e, as described above, and have the same structure in which the plurality of openings are connected with the sound guide space 103. Therefore, a redundant description thereof is omitted.

[0098] As shown in FIG. 2A, the sound guide 120a can include a plurality of openings 121a of different sizes. The sizes of the plurality of openings 121a can increase as a distance from the vibration member 110a increases. The sizes of the plurality of openings 121a included in the sound guide 120a can increase based on a linear ratio as the distance from the vibration member 110a increases along a longitudinal direction of the sound guide 120a. For example, a size ratio of an opening disposed closest to the vibration member 110a and an opening disposed immediately after the opening along the longitudinal direction can be the same as a size ratio of two openings disposed farthest from the vibration member 110a. That is, the plurality of openings 121a can each have a size that increases at a predetermined ratio along the longitudinal direction. Figure 7 As shown in FIG. 2B, the sound guide 120b can include a plurality of openings 121b of different sizes. The sizes of the plurality of openings 121b can increase as a distance from the vibration member 110b increases. The sizes of the plurality of openings 121b included in the sound guide 120b can increase based on a linear ratio as the distance from the vibration member 110b increases along a longitudinal direction of the sound guide 120b. For example, a size ratio of an opening disposed closest to the vibration member 110b and an opening disposed immediately after the opening along the longitudinal direction can be the same as a size ratio of two openings disposed farthest from the vibration member 110b. That is, the plurality of openings 121b can each have a size that increases at a predetermined ratio along the longitudinal direction.

[0099] Figure 8 ​​As shown, the sound guide 120b can include a plurality of openings 121b having different sizes. The sizes of the plurality of openings 121b can increase based on a non-linear ratio as a distance from the vibration member 110b increases along a longitudinal direction of the sound guide 120b. In detail, some of the plurality of openings 121b can have diameters of the same size. For example, the plurality of openings 121b can be implemented to include a plurality of first openings G1 each having a diameter that increases at a predetermined ratio as the distance from the vibration member 110b increases along the longitudinal direction of the sound guide 120b, and a plurality of second openings G2 arranged after the plurality of first openings G1. One or more of the plurality of second openings G2 can have the same diameter as one or more of the plurality of first openings G1.

[0100] Alternatively, according to another embodiment, the diameters of the plurality of first openings G1 can increase as the distance from the vibration member 110b increases, but the diameters of the plurality of first openings G1 can increase at different ratios. That is, the diameters of the plurality of first openings G1 can increase based on a non-linear ratio.

[0101] Figure 9 and Figure 10 are each a top view illustrating a sound guide according to a modified embodiment. As shown, the plurality of openings can each be formed as a symmetrical rectangle having various modified aspect ratios.

[0102] As Figure 9 shown, the sound guide 120c can include a plurality of openings 121c having different sizes. The plurality of openings 121c included in the sound guide 120c can be formed in a polygonal shape such as a rectangle, a square, or a diamond. For example, the plurality of openings 121c can be formed in a rectangular shape. Also, each of the plurality of openings 121c can have the same horizontal length but can have different vertical lengths. Here, the horizontal length can refer to a longitudinal direction of the sound guide 120c.

[0103] The plurality of openings 121c can have different vertical lengths and thus different sizes. In detail, the sizes of the plurality of openings 121c can increase based on a non-linear ratio as a distance from the vibration member 110c increases along a longitudinal direction of the sound guide 120c. In detail, some of the plurality of openings 121c can have diameters of the same size as each other. For example, the plurality of openings 121c can be implemented to include a plurality of first openings each having a diameter that increases based on a predetermined ratio as the distance from the vibration member 110c increases along the longitudinal direction of the sound guide 120c, and a plurality of second openings arranged after the plurality of first openings, the plurality of second openings having diameters respectively the same as the plurality of first openings.

[0104] AsFigure 10 As illustrated, the sound guide 120d can include a plurality of openings 121d having different sizes. Figure 10 A plurality of openings 121d formed in a symmetrical rectangular shape are illustrated, but the number of the plurality of openings 121d can be less than Figure 9 the number of the plurality of openings 121c illustrated. That is, different numbers of the plurality of openings can be implemented based on each implemented shape of the openings.

[0105] Figure 11 is a top view illustrating a sound guide 120e according to another embodiment. As Figure 11 illustrated, the sound guide 120e can have one slit 121e formed through a surface thereof, instead of a plurality of openings 121. A width (perpendicular to a longitudinal direction) of the one slit 121e can increase as a distance from the vibration member 110e increases. The speaker 100 can improve the directivity of the sound wave toward a diagonal line along the longitudinal direction of the sound guide 120e by using the one slit 121e included in the sound guide 120e. Further, the direction of the sound wave can depend on the width or length of the one slit 121e included in the sound guide 120e. Accordingly, the one slit 121e implemented to have different shapes can improve the directivity of the sound wave toward a specific direction diagonal to the longitudinal direction. Further, the sound guide 120 can be implemented to include a plurality of slits.

[0106] For ease of description, Figures 7 to 10 a plurality of openings 121a to 121d are illustrated to be formed in a single shape. However, embodiments are not limited thereto, and each of the plurality of openings can be implemented to have at least one of a circular shape, an elliptical shape, a rectangular shape, and a diamond shape. That is, openings having different shapes can be continuously arranged on the sound guide 120. For example, Figure 7 one of the plurality of openings 121a of Figure 9 may be disposed on the sound guide 120, and Figure 7 one of the plurality of openings 121c of may be disposed after the one of the plurality of openings 121a of

[0107] . Figures 1 to 10 Further, a plurality of openings 121 are illustrated to be arranged in a row pattern. However, the plurality of openings 121 are not limited to the pattern, but can be arranged in a curved pattern on the sound guide 120. For example, the plurality of openings 121 can be formed through the sound guide 120 along a circumference of the sound guide 120. Alternatively, the plurality of openings 121 can be arranged in a sine wave pattern along a longitudinal direction of the sound guide 120. Alternatively, the plurality of openings 121 can be arranged in a zigzag pattern.

[0108] Accordingly, the plurality of openings 121 can be distributed and arranged in a predetermined pattern, thereby improving the directivity of sound waves toward a specific direction, particularly, a longitudinal direction of the sound guide 120 and a direction diagonal to the longitudinal direction.

[0109] Figure 12 is a top view of a sound guide 120-2 according to another modified embodiment.

[0110] The plurality of openings 121-2 can be formed through one surface of the sound guide 120-2, as described above, and have the same structure in which the plurality of openings are connected with the sound guide space 103. Accordingly, a redundant description thereof is omitted.

[0111] As Figure 12 illustrated, the plurality of openings 121-2 can be arranged in each of a plurality of rows along a longitudinal direction of the sound guide 120-2. Also, the plurality of openings 121-2 included in each of the plurality of rows can have the same distance therebetween. That is, the openings included in the same row can have the same distance therebetween.

[0112] Also, the plurality of openings 121-2 included in different rows from each other, respectively, can have a predetermined distance "e" therebetween. Here, the distance between the plurality of openings included in different rows from each other, respectively, can refer to a distance between centers of the respective openings. For example, as Figure 12 illustrated, the sound guide 120-2 can include a plurality of openings 121-2 arranged in a plurality of rows along a longitudinal direction of the sound guide 120-2. As Figure 12 illustrated, a plurality of such rows can be arranged in parallel to each other. For example, as a distance from the vibrating member 110-2 increases, the distance between the centers of the respective openings can decrease.

[0113] The plurality of openings 121-2 can be implemented to be arranged in a zigzag pattern along the longitudinal direction of the sound guide 120-2.

[0114] Also, between a plurality of rows in which a plurality of openings are arranged along a longitudinal direction of the sound guide, a predetermined distance can be present, and thus the plurality of openings can be freely arranged, for example, in a plurality of straight rows or curved rows. In a case in which a cross-section of the sound guide 120-2 has a circular shape, the plurality of openings 121-2 can be arranged in a plurality of rows along a circumference of the sound guide 120-2.

[0115] Here, the plurality of rows can not only have a predetermined distance but also have different distances therebetween as needed.

[0116] Accordingly, the increased plurality of openings 121-2 can enhance the sensitivity of the sound pressure level, and the pattern in which the plurality of openings are arranged in a plurality of rows can also improve the directivity toward the longitudinal direction of the sound guide and the diagonal direction of the longitudinal direction.

[0117] Although the embodiments have been described above individually, the configurations and operations of the embodiments can be combined.

[0118] While the embodiments of the disclosure have been shown and described above, the disclosure is not limited to the specific embodiments described above, but can be variously modified by those skilled in the art to which the disclosure belongs without departing from the spirit of the disclosure disclosed in the appended claims. These modifications should also be understood to fall within the scope and spirit of the disclosure.

Claims

1. A loudspeaker, comprising: The vibrating component is configured to generate sound waves; as well as A sound guide includes a first end connected to the vibrating member, a second end having an open structure, a first surface between the first end and the second end, and a slit formed through the first surface along the longitudinal direction of the sound guide, wherein sound waves are emitted through the second end. The width of the slit perpendicular to the longitudinal direction increases with the distance from the vibrating member. The sound guide has a second surface opposite to the first surface between the first end and the second end. The first surface is planar, and the second surface is curved. Along the longitudinal direction, the distance between the first surface and the second surface increases with the distance from the vibrating member.

2. The loudspeaker according to claim 1, wherein, The cross-section of the sound guide has one of the following shapes: circular, elliptical, and polygonal.

3. A sound output device, comprising: main body; as well as The speaker housed in the main body The loudspeaker includes: The vibrating component is configured to generate sound waves; A sound guide includes a first end connected to the vibrating member, a second end having an open structure, a first surface between the first end and the second end, and a slit formed along the longitudinal direction of the sound guide through the first surface, wherein sound waves are emitted through the second end. The width of the slit perpendicular to the longitudinal direction increases with the distance from the vibrating member. The sound guide has a second surface opposite to the first surface between the first end and the second end. The first surface is planar, and the second surface is curved. Along the longitudinal direction, the distance between the first surface and the second surface increases with the distance from the vibrating member.

4. The sound output device according to claim 3, wherein, The cross-section of the sound guide has one of the following shapes: circular, elliptical, and polygonal.

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