Audio device and transportation device including the same

Abstract

To provide: a sound apparatus which can enhance sound quality of audio and improves sound pressure characteristics; and a vehicular apparatus comprising the same.SOLUTION: A sound apparatus comprises: a vibration member 110; an enclosure 150 disposed at a rear surface of the vibration member 110 and having an accommodation space 150s; a connection member 145 disposed between the vibration member 110 and the enclosure 150 and movably supporting an edge of the vibration member; and a vibration apparatus 130 vibrating the vibration member 110.SELECTED DRAWING: Figure 3

Description

Technical Field

[0001] This specification relates to an acoustic device and a transportation device including the same.

Background Art

[0002] The device includes a separate speaker or acoustic device to provide sound. When a speaker is arranged in the device, problems arise in that the design and spatial arrangement of the device are restricted by the space occupied by the speaker.

[0003] The speaker applied to the device can be, for example, an actuator including a magnet and a coil. When an actuator is applied to the device, it has the drawback of being thick. Therefore, piezoelectric elements that can achieve a thin thickness have attracted attention.

[0004] Due to the brittle characteristics, the piezoelectric element is easily damaged by an external impact, resulting in a problem of low reliability in sound reproduction. And when a speaker such as a piezoelectric element is applied to a flexible device, there is a problem that damage occurs due to the brittle characteristics.

Summary of the Invention

Problems to be Solved by the Invention

[0005] Therefore, the inventors of this specification recognized the above-mentioned problems and conducted various studies and experiments to embody an acoustic device that can improve the sound quality of sound and improve the sound pressure characteristics. Through various studies and experiments, a new acoustic device that can improve the sound quality of sound and improve the sound pressure characteristics and a transportation device including the same were invented.

[0006] The problem to be solved by the embodiments of this specification is to provide an acoustic device that can vibrate a vibrating member to generate vibration or sound and can improve acoustic characteristics and / or sound pressure characteristics, and a transportation device including the same.

[0007] The problem to be solved by the embodiments of this specification is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the following description.

Means for Solving the Problem

[0008] The acoustic device according to the embodiments of this specification includes a vibration member, an enclosure provided on the rear surface of the vibration member, a connecting member provided between the vibration member and the enclosure, and a vibration device for vibrating the vibration member. The connecting member can support the edge portion of the vibration member movably.

[0009] The transport device according to the embodiments of this specification includes an exterior material, an interior material covering the exterior material, and one or more acoustic generating devices provided in at least one or more of the exterior material, the interior material, and between the exterior material and the interior material. The one or more acoustic generating devices include a vibration member, an enclosure provided on the rear surface of the vibration member, a connecting member provided between the vibration member and the enclosure, and a vibration device for vibrating the vibration member. The connecting member can support the edge portion of the vibration member movably. One or more of the interior material and the exterior material can vibrate by the vibration of the one or more acoustic generating devices.

[0010] In addition to the problem-solving means mentioned above, the specific matters according to various examples of this specification are included in the following description and drawings.

[0011] The acoustic device according to the embodiments of this specification can generate sound so that the traveling direction of the sound of the device is directed toward the front surface of the display panel or the vibration member by constituting an acoustic device that vibrates the display panel or the vibration member.

[0012] The acoustic device according to the embodiments of this specification can provide uniform acoustic characteristics and / or sound pressure characteristics on the front surface, rear surface, and side surface of the device.

[0013] The acoustic device according to the embodiment of the present specification constitutes a connecting member between a vibrating member and an enclosure, so that peak and / or dip phenomena can be minimized or prevented at frequencies in the mid-low frequency band and / or the high frequency band.

[0014] Since the acoustic device according to the embodiment of the present specification includes a buffer member, the vibration device can be protected from external impacts, and cracks that may occur during the transportation process or the attachment process of the vibration device can be improved.

[0015] Since the contents of the problems to be solved, the problem-solving means, and the effects mentioned above do not specify the essential features of the claims, the scope of rights of the claims is not limited by the matters described in the content of the invention.

Brief Description of the Drawings

[0016]

Figure 1

Figure 2

Figure 3

Figure 4

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Figure 8

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Figure 10

Figure 11

Figure 12

Figure 13A

Figure 13B

Figure 14

Figure 15

Mode for Carrying Out the Invention

[0017] The advantages and features of the present specification, and the methods for achieving them, will become apparent by referring to various examples described in detail hereinafter based on the accompanying drawings. However, the present specification is not limited to an example disclosed below, and can be embodied in various different forms. Examples such as those in the present specification are only to complete the disclosure of the present specification, and are provided to fully inform those having ordinary knowledge in the technical field to which the technical idea of the present specification belongs of the scope of the technical idea. The technical idea of the present specification is defined only by the scope of the claims.

[0018] The shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present specification are exemplary, and the present specification is not limited to the matters illustrated. The same reference numerals throughout the specification indicate the same components. Also, in the description of the present specification, when it is determined that a specific description of related known technologies may unnecessarily obscure the gist of the present specification, the detailed description thereof is omitted.

[0019] When using terms such as "including", "having", "becoming", etc. referred to in the present specification, other parts can be added unless "only" is used. When a component is expressed in the singular, it includes the case of including a plurality unless otherwise explicitly stated.

[0020] In the interpretation of components, even if there is no separate explicit description regarding the error range, it shall be interpreted as including the error range.

[0021] In the case of an explanation of the positional relationship, for example, when explaining the positional relationship between two parts such as "on ~", "above ~", "below ~", "next to ~", etc., unless "immediately" or "directly" is used, one or more other parts can be located between the two parts.

[0022] In the case of an explanation of the time relationship, for example, when explaining the temporal precedence relationship such as "after ~", "subsequent to ~", "next to ~", "before ~", etc., unless "immediately" or "directly" is used, cases where it is not continuous can also be included.

[0023] The terms such as first, second, etc. are used to describe various components, but these components are not limited to these terms. These terms are only used to distinguish one component from other components. Therefore, the first component mentioned below may also be the second component within the technical idea of this specification.

[0024] In the description of the components of this specification, terms such as first, second, A, B, (a), (b), etc. can be used. Such terms are only for distinguishing the component from other components, and the essence, order, sequence, or number, etc. of the component are not limited by such terms. When a component is described as being "connected", "coupled", or "joined" to another component, the component can be directly connected or joined to the other component, but it must be understood that unless there are specific explicit descriptions, other components can [intervene] between the components that can be indirectly connected or joined.

[0025] The term "at least one" should be understood to include all combinations of one or more. For example, the meaning of "at least one of the first, second, and third components" can be said to include not only each of the first, second, or third alone, but also combinations of two or more of all the components among the first, second, and third.

[0026] The features of each of many embodiments in this specification can be partially or wholly combined or combined with each other, enabling various technical linkages and drives, and each embodiment can be implemented independently of each other or implemented together in an associated relationship.

[0027] Hereinafter, embodiments of this specification will be described based on the accompanying drawings and examples. Since the scale of the components shown in the drawings has a scale different from the actual one for the convenience of explanation, it is not limited to the scale shown in the drawings.

[0028] FIG. 1 is a perspective view showing an acoustic device according to an embodiment of this specification. FIG. 2 is a cross-sectional view taken along line A-A' shown in FIG. 1.

[0029] Referring to FIGS. 1 and 2, an acoustic device 100 according to an embodiment of this specification can include a vibration member 110 and a vibration device 130.

[0030] The vibration member 110 can output sound by the vibration of the vibration device 130. Therefore, the vibration member 110 can be, for example, a vibration object, a diaphragm, a vibration panel, an acoustic plate, an acoustic output member, or an acoustic output panel, etc., but the embodiments of this specification are not limited thereto.

[0031] The vibrating member 110 can be configured to be transparent, translucent, and opaque. The vibrating member 110 according to an embodiment of the present specification can include a metallic material having material characteristics suitable for outputting sound by vibration or a non-metallic material (or a composite non-metallic material). The metallic material of the vibrating member 110 according to the embodiment of the present specification can include any one or more of stainless steel, aluminum (Al), aluminum (Al) alloy, magnesium (Mg), magnesium (Mg) alloy, and magnesium-lithium (Mg-Li) alloy, but the embodiment of the present specification is not limited thereto. The non-metallic material (or composite non-metallic material) of the vibrating member 110 can include one or more of glass, rubber, plastic, carbon, fiber, leather, wood, fabric, and paper, but the embodiment of the present specification is not limited thereto. For example, the vibrating member 110 can be made of ABS (acrylonitrile-butadiene-styrene), but the embodiment of the present specification is not limited thereto. For example, ABS (acrylonitrile-butadiene-styrene) can be a material having impact resistance and rigidity.

[0032] According to an embodiment of the present specification, the vibration member 110 can embody a signage panel such as an analog signage such as an advertising billboard, a poster, a guide board, etc. For example, when the vibration member 110 embodies a signage panel, the analog signage can include signage contents such as texts, pictures, and symbols. The signage contents can be arranged on the vibration member 110 in a visible manner. For example, the signage contents can be attached to one or more of the first surface (or front surface) of the vibration member 110 and the second surface (or rear surface) different from (or opposite to) the first surface. For example, the signage contents can be directly attached to one or more of the first surface (or front surface) of the vibration member 110 and the second surface (or rear surface) different from (or opposite to) the first surface. For example, the signage contents can be printed on a medium such as paper, and the medium on which the signage contents are printed can be attached to one or more of the first surface and the second surface of the vibration member 110. For example, when the signage contents are attached to the second surface of the vibration member 110, the vibration member 110 can be made of a transparent material.

[0033] The vibration member 110 according to an embodiment of the present specification can have a planar structure. For example, the vibration member 110 can have a rectangular plate-like structure. The vibration member 110 can have a horizontal length parallel to the first direction X and a vertical length parallel to the second direction Y intersecting the first direction X. For example, the vibration member 110 can have a rectangle with a relatively longer horizontal length than the vertical length. However, the present invention is not limited thereto, and the vibration member 110 can also have a square with the same horizontal length and vertical length.

[0034] The vibration device 130 can be configured to vibrate (or displace or drive) itself in response to an applied electrical signal (or voice signal or acoustic signal), or to vibrate (or displace or drive) a vibration member (or diaphragm or object to be vibrated). For example, the vibration device 130 can be a vibration structure, a vibrator, a vibration generating element, a vibration generator, an acoustic device, an acoustic element, an acoustic generating element, or an acoustic generator, etc., but the embodiments of the present specification are not limited thereto.

[0035] The vibration device 130 according to an embodiment of the present specification may include a piezoelectric material or an electroactive material having piezoelectric characteristics. The vibration device 130 can vibrate (or displace or drive) the vibration member 110 by the vibration (or displacement or drive) of the piezoelectric material due to an electrical signal (or voice signal or acoustic signal) applied to the piezoelectric material. For example, the vibration device 130 can vibrate (or displace or drive) by alternately repeating contraction and / or expansion due to the piezoelectric effect (or piezoelectric characteristics). For example, the vibration device 130 can vibrate (or displace or drive) in the vertical direction (or thickness direction) (Z) by alternately repeating contraction and / or expansion due to the inverse piezoelectric effect.

[0036] The vibration device 130 according to an embodiment of the present specification may be connected or coupled to the second surface of the vibration member 110 via the adhesive member 120. For example, the adhesive member 120 may be disposed between the vibration member 110 and the vibration device 130.

[0037] The adhesive member 120 according to an embodiment of the present specification may include an adhesive layer (or adhesive layer) having excellent adhesion or adhesive force. For example, the adhesive member 120 may include a double-sided adhesive tape, a double-sided adhesive foam tape, a double-sided adhesive foam pad, or an adhesive sheet, but the embodiments of the present specification are not limited thereto. For example, when the adhesive member 120 includes an adhesive sheet (or adhesive layer), the adhesive member 120 may include only the adhesive layer or the adhesive layer without a base member such as a plastic material.

[0038] The adhesive layer (or adhesive layer) of the adhesive member 120 according to an embodiment of the present specification may include epoxy, acrylic, silicone, or urethane, but the embodiments of the present specification are not limited thereto.

[0039] The adhesive layer (or pressure-sensitive adhesive layer) of the adhesive member 120 according to other embodiments of the present specification may include PSA (pressure sensitive adhesive), OCA (optically clear adhesive), or OCR (optically clear resin), but the embodiments of the present specification are not limited thereto.

[0040] The acoustic device 100 according to an embodiment of the present specification may further include an enclosure 150 and a connecting member 140.

[0041] The enclosure 150 may be disposed on the rear surface of the vibration member 110 so as to cover the vibration member 110 and the vibration device 130. The enclosure 150 has an accommodation space 150s for accommodating the vibration device 130 and may have a box shape with one side open. Further, the opening on one side of the accommodation space 150s is covered by the vibration member 110, and a predetermined air gap may be formed between the accommodation space 150s and the vibration member 110.

[0042] The enclosure 150 according to an embodiment of the present specification may include one or more materials of a metal material or a non-metal material (or a composite non-metal material), but the embodiments of the present specification are not limited thereto. For example, the enclosure 150 may include one or more materials of metal, plastic, carbon, and wood, but the embodiments of the present specification are not limited thereto. For example, the enclosure 150 may be a housing, a case, an outer case, a case member, a housing member, a cabinet, a sealing member, a sealing cap, a sealed box, or a sound box, etc., but the embodiments of the present specification are not limited thereto. For example, the accommodation space 150s of the enclosure 150 may be a gap space, an air gap, a vibration space, an acoustic space, a vibration box, or a sealed space, etc., but the embodiments of the present specification are not limited thereto.

[0043] According to an embodiment of the present specification, the enclosure 150 can maintain a constant impedance component due to air acting on the vibration member 110 during the vibration of the vibration member 110. For example, the air around the vibration member 110 will resist the vibration of the vibration member 110 and act as an impedance component having different resistance and reactance components depending on the frequency. Therefore, by forming a sealed space surrounding the vibration device 130, the enclosure 150 can maintain a constant impedance component (or air impedance or elastic impedance) acting on the vibration member 110 due to air, thereby improving the acoustic characteristics and / or sound pressure characteristics in the low-frequency band generated by the vibration of the vibration member 110 and improving the sound quality of the high-frequency band sound.

[0044] The enclosure 150 according to an embodiment of the present specification can include a bottom portion 151 and side portions 152.

[0045] The bottom portion 151 can be disposed behind the vibration member 110. For example, the bottom portion 151 can be disposed behind the vibration member 110 so as to cover the second surface of the vibration member 110 and the vibration device 130. For example, the bottom portion 151 can be disposed so as to be separated from the second surface of the vibration member 110 and the vibration device 130. For example, the bottom portion 151 can be a plate, a bottom, a housing plate, or a housing bottom, etc., but the embodiments of the present specification are not limited thereto.

[0046] The side portions 152 can be connected to the edges of the bottom portion 151. For example, the side portions 152 can be connected to the connecting member 140. For example, the side portions 152 can be bent along the third direction Z parallel to the thickness direction of the vibration member 110 from the edges of the bottom portion 151. For example, the side portions 152 can include a first side portion to a fourth side portion. For example, the side portions 152 can be a side surface, a side wall portion, a housing side surface, or a housing side wall, etc., but the embodiments of the present specification are not limited thereto.

[0047] The side portion 152 can be integrated with the bottom portion 151. For example, the bottom portion 151 and the side portion 152 can be integrated into a single unit. Thus, an accommodation space 150s surrounded by the side portion 152 can be provided on the bottom portion 151. Thus, the bottom portion 151 and the side portion 152 can form a box shape with one side open.

[0048] The side portion 152 can be connected or coupled to the second surface of the vibration member 110 via the connecting member 140. For example, the side portion 152 can be connected or coupled to the edge of the vibration member 110 via the connecting member 140. For example, the side portion 152 can be connected or coupled to the edge of the second surface of the vibration member 110 via the connecting member 140.

[0049] The connecting member 140 according to an embodiment of the present specification can include one or more of a double-sided tape or a double-sided foam tape, but the embodiments of the present specification are not limited thereto.

[0050] The vibration device 130 according to an embodiment of the present specification can generate or output sound by vibrating in response to a vibration driving signal (or an acoustic signal) provided from an acoustic processing circuit to vibrate the vibration member 110.

[0051] When the vibration member 110 is configured in a planar structure, it has been recognized that the acoustic characteristics and / or sound pressure characteristics deteriorate. Therefore, the inventors of the present specification have conducted various studies and experiments to improve the acoustic characteristics and / or sound pressure characteristics. Through various studies and experiments, a new acoustic device capable of improving the acoustic characteristics and / or sound pressure characteristics has been invented. This will be described below.

[0052] FIG. 3 is another cross-sectional view of the line A-A' shown in FIG. 1 according to another embodiment of the present specification. FIG. 4 is an exploded perspective view according to another embodiment of the present specification. FIG. 5 is an enlarged view of the connecting member according to another embodiment of the present specification.

[0053] Referring to FIGS. 3 to 5, the acoustic device 100 according to another embodiment of the present specification may include a vibration member 110 and a vibration device 130. Since the descriptions of the vibration member 110 and the vibration device 130 are substantially the same as those described in FIGS. 1 and 2, the descriptions thereof are omitted or abbreviated.

[0054] The vibration member 110 according to another embodiment of the present specification may be configured in a non-planar structure. For example, the vibration member 110 may include a protruding portion 111. For example, the protruding portion 111 may be configured at the end (or one side) of the vibration member 110. For example, the protruding portion 111 may protrude from the second surface of the vibration member 110. For example, the protruding portion 111 may be formed so as to surround the outer periphery of the vibration member 110. The protruding portion 111 may have a configuration protruding from the rear surface of the vibration member 110. For example, the protruding portion 111 and the vibration member 110 may be integrated into a single body, but the embodiments of the present specification are not limited thereto.

[0055] The protruding portion 111 may include a substance of the same material as the vibration member 110, but the embodiments of the present specification are not limited thereto. The protruding portion 111 may be a rib or the like, but the embodiments of the present specification are not limited thereto.

[0056] According to another embodiment of the present specification, since the vibration member 110 has a non-planar structure, the acoustic characteristics and / or sound pressure characteristics of the vibration device 130 can be improved. For example, since the vibration member 110 has a non-planar structure, the acoustic characteristics and / or sound pressure characteristics in the high frequency band of the vibration device 130 can be improved. For example, since the protruding portion 111 is configured on the vibration member 110, the acoustic characteristics and / or sound pressure characteristics in the high frequency band of the vibration device 130 can be improved. For example, since the protruding portion 111 is configured on the vibration member 110, the acoustic characteristics and / or sound pressure characteristics at frequencies of 2 kHz to 4 kHz and / or 6 kHz can be improved.

[0057] The vibration member 110 according to other embodiments of the present specification may be configured to have a plurality of natural frequencies (or natural frequencies). Since the vibration member 110 has a non-planar structure, it may have a plurality of natural frequencies. The vibration member 110 may have a plurality of different natural frequencies for each region. For example, the vibration member 110 may have a plurality of different natural frequencies depending on the thickness of the vibration member 110 for each region.

[0058] The acoustic device 100 according to other embodiments of the present specification may include an enclosure 150 and a connecting member 145. Since the description of the enclosure 150 is substantially the same as the content described in FIGS. 1 and 2, the description thereof will be omitted or abbreviated.

[0059] The connecting member according to the embodiment of the present specification may be disposed between the vibration member 110 and the enclosure 150. Since physical contact (or friction) occurs between the vibration member 110 and the enclosure 150 due to the connecting member, there is a problem that noise (or noise) is generated due to the physical contact (or friction) between the vibration member 110 and the enclosure 150. Therefore, it has been recognized that peak and / or dip phenomena appear at frequencies in the midrange band and / or the high-frequency band. A peak may be a phenomenon in which the sound pressure suddenly increases at a specific frequency. A dip may be a phenomenon in which the generation of a specific frequency is suppressed and a low sound pressure is generated. The acoustic output characteristics of the acoustic device 100 may be degraded due to peak and / or dip phenomena. Therefore, the inventors of the present specification have conducted various studies and experiments capable of improving the acoustic output characteristics of the acoustic device 100. Through various studies and experiments, a new acoustic device capable of improving the acoustic output characteristics of the acoustic device 100 has been invented. This will be described below.

[0060] The connecting member 145 according to the embodiments of the present specification can absorb vibrations between the vibrating member 110 and the enclosure 150, and a structure that can increase the effective vibration area can be applied. For example, a phenomenon of reinforcement and cancellation of sound waves that return without being able to adjust or control the sound waves generated in the connecting member between the vibrating member 110 and the enclosure 150 occurs. As a result, peak and / or dip phenomena occur at frequencies in the midrange band and / or the high-frequency band. Therefore, the connecting member 145 according to the embodiments of the present specification can adjust or control the sound waves generated in the connecting member between the vibrating member 110 and the enclosure 150.

[0061] Referring to FIG. 5, the connecting member 145 according to the embodiments of the present specification can be disposed between the enclosure 150 and the vibrating member 110. For example, the connecting member 145 disposed between the enclosure 150 and the vibrating member 110 can be configured to minimize or prevent the vibration of the vibrating member 110 from being transmitted to the enclosure 150. The connecting member 145 can have material properties suitable for blocking vibrations. For example, the connecting member 145 can include a material having elasticity for vibration absorption (or shock absorption). For example, the connecting member 145 can be composed of a flexible material having elasticity. The connecting member 145 according to the embodiments of the present specification can be composed of polyurethane, polyolefin, or silicone material, but the embodiments of the present specification are not limited thereto. The connecting member 145 according to the embodiments of the present specification can include one or more of double-sided polyurethane tape, double-sided polyurethane foam tape, double-sided rubber, or double-sided sponge tape, but the embodiments of the present specification are not limited thereto.

[0062] The connecting member 145 according to the embodiments of the present specification can movably support the edge of the vibrating member 110. The connecting member 145 can include a connecting portion. The connecting portion can include a first connecting portion 145c1 and a second connecting portion 145c2. For example, the connecting member 145 can include a first connecting portion 145c1 that supports the edge of the vibrating member 110. For example, the connecting member 145 can include a second connecting portion 145c2 that supports the edge of the vibrating member 110. For example, the first connecting portion 145c1 can be a first support portion, but the embodiments of the present specification are not limited thereto. For example, the second connecting portion 145c2 can be a second support portion, but the embodiments of the present specification are not limited thereto.

[0063] The vibrating member 110 according to the embodiments of the present specification can include a protruding portion 111 connected to the connecting member 145. For example, the vibrating member 110 can include a first connecting portion 145c1 and a protruding portion 111. For example, the enclosure 150 can include a second connecting portion 145c2 and a side portion 152. For example, the connecting member 145 can be disposed between the protruding portion 111 of the vibrating member 110 and the side portion 152 of the enclosure 150. For example, the connecting member 145 can connect or couple one end (or one side) of the side portion 152 of the enclosure 150 and one end (or one side) of the protruding portion 111.

[0064] The first connecting portion 145c1 can be connected to the vibrating member 110. For example, the first connecting portion 145c1 can be connected to the protruding portion 111 of the vibrating member 110. The second connecting portion 145c2 can be connected to the enclosure 150. For example, the second connecting portion 145c2 can be connected to the side portion 152 of the enclosure 150. For example, the first connecting portion 145c1 and the second connecting portion 145c2 can be made of an elastic material. For example, the first connecting portion 145c1 and the second connecting portion 145c2 can be made of a material such as silicone, rubber, or polyurethane, but the embodiments of the present specification are not limited thereto.

[0065] The connecting member 145 according to the embodiments of the present specification can include an accommodation space. For example, the accommodation space can include a first accommodation space 145s1 and a second accommodation space 145s2. The connecting member 145 according to the embodiments of the present specification can include a groove. For example, the groove can include a first groove 145g1 and a second groove 145g2.

[0066] The first connecting portion 145c1 according to the embodiments of the present specification can include a first accommodation space 145s1. For example, the first accommodation space 145s1 can accommodate the protruding portion 111. The first connecting portion 145c1 can include a first groove 145g1 connected to the first accommodation space 145s1. The protruding portion 111 can be accommodated in the first groove 145g1 of the first connecting portion 145c1. For example, the first accommodation space 145s1 can be an internal space or an accommodating portion, but the embodiments of the present specification are not limited thereto. For example, the first groove 145g1 can be a first hole, an accommodation groove, or an accommodation hole, but the embodiments of the present specification are not limited thereto.

[0067] The second connecting portion 145c2 according to the embodiments of the present specification can include a second accommodation space 145s2. For example, the second accommodation space 145s2 can accommodate the side portion 152. The second connecting portion 145c2 can include a second groove 145g2 connected to the second accommodation space 145s2. The side portion 152 of the enclosure 150 can be accommodated in the second groove 145g2 of the second connecting portion 145c2. For example, the second accommodation space 145s2 can be an internal space or an accommodating portion, but the embodiments of the present specification are not limited thereto. For example, the second groove 145g2 can be a second hole, an accommodation groove, or an accommodation hole, but the embodiments of the present specification are not limited thereto.

[0068] For example, the connecting member 145 can include a base portion 145c. The base portion 145c can be provided between the first connecting portion 145c1 and the second connecting portion 145c2. For example, the base portion 145c can connect the first connecting portion 145c1 and the second connecting portion 145c2.

[0069] The connecting member 145 according to other embodiments of the present specification may have a thickness that can minimize or prevent the vibration of the vibrating member 110 from being transmitted to the enclosure 150. The connecting member 145 can minimize or prevent the vibration of the vibrating member 110 from being transmitted to the enclosure 150 by absorbing the vibration of the vibrating member 110 by its thickness and elasticity. Further, the connecting member 145 can prevent physical contact (or friction) between the vibrating member 110 and the enclosure 150, thereby preventing the generation of noise (or noise) due to physical contact (or friction) between the vibrating member 110 and the enclosure 150. For example, the connecting member 145 can be an elastic member, a flexible member, a damping member, a vibration absorbing member, or a vibration blocking member, etc., but the embodiments of the present specification are not limited thereto.

[0070] Referring to FIGS. 3 and 4, the enclosure 150 according to other embodiments of the present specification can further include one or more patterns PT. For example, the one or more patterns PT can be disposed on the bottom 151.

[0071] One or more patterns PT may be disposed in a predetermined region of the enclosure 150 to reduce the air pressure in the gap space within the acoustic device. For example, one or more patterns PT may be disposed at regular intervals. One or more patterns PT may be configured corresponding to the size of the vibrating device 130. One or more patterns PT may overlap the vibrating device 130. For example, one or more patterns PT may be smaller than the size of the vibrating device 130. For example, one or more patterns PT may be disposed so as to be different from each other as going from the region where the vibrating device 130 is disposed to the region where the vibrating device 130 is not disposed. For example, one or more patterns PT of the enclosure 150 may be disposed so as to change from the center to the edge of the vibrating device 130. One or more patterns PT may be disposed at the same interval, but the embodiments of this specification are not limited thereto. For example, one or more patterns PT may be formed at different intervals as going from the center to the edge of the vibrating device 130. For example, one or more patterns PT may be formed at a narrow interval or a wide interval as going from the center to the edge of the vibrating device 130. For example, one or more patterns PT may be grooves, holes, or slits, but the embodiments of this specification are not limited thereto.

[0072] According to the embodiments of this specification, since one or more patterns PT of the enclosure 150 can expand the band in the low frequency band by reducing the air pressure in the gap space, the acoustic characteristics in the low frequency band can be improved. For example, when the pressure (or air pressure) in the gap space is reduced by one or more patterns PT, the displacement amount (or bending force) of the vibrating device 130 disposed between the vibrating member 110 and the enclosure 150 can be increased, whereby the band in the low frequency band can be expanded, and the acoustic characteristics and / or sound pressure characteristics in the low frequency band can be improved. When one or more patterns PT are not disposed on the enclosure 150, the air pressure in the gap space may increase due to sound waves or acoustics generated by the vibration of the vibrating device 130, and the acoustic characteristics in the low frequency band may deteriorate.

[0073] According to the embodiments of this specification, by configuring one or more patterns PT in the enclosure 150, even if sound waves or acoustics are generated by the vibration of the vibration device 130, air can be discharged through the one or more patterns PT, so that the air pressure in the gap space can be reduced. Thereby, the band in the low-frequency range can be expanded, and the acoustic characteristics in the low-frequency range can be improved.

[0074] Referring to FIG. 4, the connecting member 145 according to the embodiments of this specification may include an opening OP. The signal cable 132 can pass through the opening OP. The connecting member 145 of the portion between the vibrating member 110 and the enclosure 150 except for the opening OP can be sealed.

[0075] The vibration device 130 according to the embodiments of this specification can generate or output sound by vibrating according to a vibration drive signal (or an acoustic signal) provided from an acoustic processing circuit to vibrate the vibrating member 110. The sound generated by the vibration of the vibrating member 110 having a non-planar structure can increase the sound pressure characteristics and expand the reproduction sound range band by vibrations having various natural frequencies of the vibrating member 110.

[0076] According to an embodiment of the present specification, the vibration member 110 of the acoustic device 100 further includes a protrusion 111, so that the acoustic output characteristics of the acoustic device 100 can be improved, the peak and / or dip phenomenon can be improved, and the acoustic characteristics can be further improved. A peak may be a phenomenon in which the sound pressure suddenly increases at a specific frequency. A dip may be a phenomenon in which the generation of a specific frequency is suppressed and a low sound pressure is generated. The acoustic output characteristics of the acoustic device 100 may be degraded due to the peak and / or dip phenomenon. According to another embodiment of the present specification, since the protrusion 111 is formed on the vibration member 110, the peak and / or dip phenomenon in the high frequency band is improved, so that the acoustic characteristics and / or sound pressure characteristics in the high frequency band can be further improved. The low frequency band may be a frequency range of 500 Hz or less, the middle frequency band may be a frequency range of 500 Hz to 2 kHz, and the high frequency band may be a frequency range of 2 kHz to 20 kHz. The frequency ranges of the low frequency band, the middle frequency band, and the high frequency band do not limit the content of the present specification.

[0077] According to an embodiment of the present specification, the connecting member 145 can minimize or prevent the vibration of the vibration member 110 from being transmitted to the enclosure 150 by absorbing the vibration of the vibration member 110. According to an embodiment of the present specification, the connecting member 145 can absorb the vibration between the vibration member 110 and the enclosure 150 and increase the effective vibration area, so that the peak and / or dip phenomenon at the frequencies of the mid-low frequency band and / or the high frequency band can be minimized or prevented. According to an embodiment of the present specification, since the connecting member 145 is movably supported at the edge of the vibration member 110, the peak and / or dip phenomenon at the frequencies of the mid-low frequency band and / or the high frequency band can be minimized or prevented.

[0078] FIG. 6 is a diagram showing a vibration element according to an embodiment of the present specification. FIG. 7 is a cross-sectional view taken along line B-B' shown in FIG. 6.

[0079] Referring to FIGS. 6 and 7, a vibration device 130 according to an embodiment of the present specification may include one or more vibration elements 131.

[0080] One or more vibration elements 131 according to an embodiment of the present specification may have a quadrangle having a first length parallel to the first direction X and a second length parallel to the second direction Y intersecting the first direction X. For example, one or more vibration elements 131 may have a square in which the first length and the second length are the same. However, without being limited thereto, one or more vibration elements 131 may have a rectangle, a non-square shape, a circular shape, or an elliptical shape in which either one of the first length and the second length is larger than the other.

[0081] The vibration element 131 according to an embodiment of the present specification may include a vibration part 131a, a first electrode part 131b, and a second electrode part 131c.

[0082] The vibration part 131a may include a piezoelectric material or an electroactive material having a piezoelectric effect. For example, the piezoelectric material may have a characteristic in which a pressure or a torsional phenomenon acts on the crystal structure by an external force, a potential difference is generated by dielectric polarization due to a relative position change between positive (+) ions and negative (-) ions, and conversely, vibration is generated by an electric field due to an applied voltage. The vibration part 131a may be a vibration layer, a piezoelectric layer, a piezoelectric material layer, an electroactive layer, a piezoelectric material part, an electroactive part, a piezoelectric structure, a piezoelectric composite layer, a piezoelectric composite, or a piezoelectric ceramic composite, etc., but the embodiments of the present specification are not limited thereto. Since the vibration part 131a may be made of a transparent, translucent, or opaque piezoelectric material, the vibration part 131a may be transparent, translucent, or opaque.

[0083] The vibration part 131a may be composed of an inorganic material part. The inorganic material part may include a piezoelectric material, a composite piezoelectric material, or an electroactive material including a piezoelectric effect.

[0084] The vibration part 131a according to an embodiment of the present specification may be made of a ceramic-based material capable of relatively high vibration implementation or a piezoelectric ceramic having a perovskite crystal structure. The perovskite crystal structure has piezoelectric and inverse piezoelectric effects and may have a plate-like structure having orientation. The perovskite crystal structure is ABO 3It is represented by the chemical formula, the A site can consist of a divalent metal element, and the B site can consist of a tetravalent metal element. As an example in this specification, ABO 3 In the chemical formula, the A site and the B site can be cations, and O can be an anion. For example, each of the plurality of first portions 131a1 can include at least one of PbTiO 3 , PbZrO 3 , PbZrTiO 3 , BaTiO 3 , and SrTiO 3 , but the examples in this specification are not limited thereto.

[0085] The piezoelectric ceramic can be composed of a single crystal ceramic having a single crystal structure or can be composed of a ceramic material or a polycrystalline ceramic having a polycrystalline structure. The piezoelectric material of the single crystal ceramic can include α-AlPO 4 , α-SiO 2 , LiNbO 3 , Tb 2 (MoO 4 ) 3 , Li 2 B 4 O 7 , or ZnO, but the examples in this specification are not limited thereto. The piezoelectric material of the polycrystalline ceramic can include a PZT (lead zirconate titanate) - based material containing lead (Pb), zirconium (Zr), and titanium (Ti), or a PZNN (lead zirconate nickel niobate) - based material containing lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the examples in this specification are not limited thereto.

[0086] According to another example, the vibrating part 131a can include at least one of CaTiO 3 , BaTiO 3 , and SrTiO 3 that does not contain lead (Pb), but the examples in this specification are not limited thereto.

[0087] The first electrode portion 131b can be disposed on the first surface (or upper surface) of the vibrating portion 131a. The first electrode portion 131b can be commonly disposed or coupled to the first surfaces of the respective plurality of first portions 131a1 and the first surfaces of the respective plurality of second portions 131a2, and can be electrically connected to the first surfaces of the respective plurality of first portions 131a1. For example, the first electrode portion 131b can have the form of a total electrode disposed on the entire first surface of the vibrating portion 131a. For example, the first electrode portion 131b can have substantially the same form as the vibrating portion 131a, but the embodiments of the present specification are not limited thereto.

[0088] The first electrode portion 131b according to an embodiment of the present specification can be made of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the transparent or translucent conductive material can include ITO (indium tin oxide) or IZO (indium zinc oxide), but the embodiments of the present specification are not limited thereto. The opaque conductive material can include or consist of silver (Ag) containing gold (Au), silver (Ag), platinum (Pt), palladium (Pd), molybdenum (Mo), magnesium (Mg), carbon, or silver (Ag) containing glass frit, etc., but the embodiments of the present specification are not limited thereto. For example, the first electrode portion 131b can include silver (Ag) having a low specific resistance in order to improve the electrical characteristics and / or vibration characteristics of the vibrating portion 131a. For example, carbon can be a carbon material including carbon black, ketjen black, carbon nanotubes, and graphite, but the embodiments of the present specification are not limited thereto.

[0089] The second electrode portion 131c can be disposed on a second surface (or back surface) different from (or opposite to) the first surface of the vibrating portion 131a. The second electrode portion 131c can be commonly disposed or coupled to the second surfaces of the respective plurality of first portions 131a1 and the second surfaces of the respective plurality of second portions 131a2, and can be electrically connected to the second surfaces of the respective plurality of first portions 131a1. For example, the second electrode portion 131c can have a form of an entire electrode disposed on the entire second surface of the vibrating portion 131a. For example, the second electrode portion 131c can have the same form as the vibrating portion 131a, but the embodiments of the present specification are not limited thereto. The second electrode portion 131c according to an embodiment of the present specification can be made of a transparent conductive material, a translucent conductive material, or an opaque conductive material. For example, the second electrode portion 131c can be made of the same material as the first electrode portion 131b, but the embodiments of the present specification are not limited thereto. According to another example, the second electrode portion 131c can be formed of a material different from that of the first electrode portion 131b.

[0090] The vibrating portion 131a can be polarized (or poled) by a constant voltage applied to the first electrode portion 131b and the second electrode portion 131c in a constant temperature atmosphere or a temperature atmosphere changing from a high temperature to a normal temperature, but the embodiments of the present specification are not limited thereto. For example, the vibrating portion 131a can vibrate by alternately repeating contraction and / or expansion due to the inverse piezoelectric effect by an acoustic signal (or voice signal) externally applied to the first electrode portion 131b and the second electrode portion 131c. For example, the vibrating portion 131a can vibrate by vertical vibration and planar vibration by the first electrode portion 131b and the second electrode portion 131c. The displacement (or vibration or driving) of the vibrating member (or diaphragm or object to be vibrated) can be increased by the contraction and / or expansion of the vibrating portion 131a in the planar direction, thereby further improving the vibration characteristics of the vibration device.

[0091] The vibration element 131 according to an embodiment of the present specification can further include a first cover member 131d and a second cover member 131e.

[0092] The first cover member 131d can be disposed on the first surface of the vibration element 131. For example, the first cover member 131d can be configured to cover the first electrode portion 131b. Thus, the first cover member 131d can protect the first electrode portion 131b.

[0093] The second cover member 131e can be disposed on the second surface of the vibration element 131. For example, the second cover member 131e can be configured to cover the second electrode portion 131c. Thus, the second cover member 131e can protect the second electrode portion 131c.

[0094] Each of the first cover member 131d and the second cover member 131e according to an embodiment of the present specification can include one or more materials among plastic, fiber, carbon, and wood, but the embodiments of the present specification are not limited thereto. For example, each of the first cover member 131d and the second cover member 131e can include the same or different materials. For example, each of the first cover member 131d and the second cover member 131e can be a polyimide film or a polyethylene terephthalate film, but the embodiments of the present specification are not limited thereto.

[0095] The first cover member 131d according to an embodiment of the present specification can be connected or coupled to the first electrode portion 131b via the first adhesive layer 131f. For example, the first cover member 131d can be connected or coupled to the first electrode portion 131b by a film laminating process performed via the first adhesive layer 131f.

[0096] The second cover member 131e according to an embodiment of the present specification can be connected or coupled to the second electrode portion 131c via the second adhesive layer 131g. For example, the second cover member 131e can be connected or coupled to the second electrode portion 131c by a film laminating process performed via the second adhesive layer 131g.

[0097] The first adhesive layer 131f can be disposed between the first electrode portion 131b and the first cover member 131d. The second adhesive layer 131g can be disposed between the second electrode portion 131c and the second cover member 131e. For example, the first adhesive layer 131f and the second adhesive layer 131g can be configured between the first cover member 131d and the second cover member 131e so as to completely wrap the vibrating portion 131a, the first electrode portion 131b, and the second electrode portion 131c. For example, the vibrating portion 131a, the first electrode portion 131b, and the second electrode portion 131c can be embedded or incorporated between the first adhesive layer 131f and the second adhesive layer 131g.

[0098] Each of the first adhesive layer 131f and the second adhesive layer 131g according to the embodiments of the present specification can include an electrically insulating material that has adhesiveness and is capable of compression and restoration. For example, each of the first adhesive layer 131f and the second adhesive layer 131g can include an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin, but the embodiments of the present specification are not limited thereto.

[0099] Either one of the first cover member 131d and the second cover member 131e can be attached or joined (or connected) to the vibrating member (or diaphragm or object to be vibrated) via an adhesive member.

[0100] According to an embodiment of the present specification, either one of the first cover member 131d and the second cover member 131e can be attached or joined (or connected) to the vibrating member (or diaphragm or object to be vibrated) via an adhesive member. For example, either one of the first cover member 131d and the second cover member 131e can be attached or joined (or connected) to the vibrating member 110 via the adhesive member 120 as described with reference to FIGS. 1 and 2.

[0101] The vibration element 131 according to an embodiment of the present specification can further include a first power supply line PL1, a second power supply line PL2, and a pad portion 131p.

[0102] The first power supply line PL1 can be disposed on the first cover member 131d. For example, the first power supply line PL1 can be disposed between the first electrode portion 131b and the first cover member 131d and can be electrically connected to the first electrode portion 131b. The first power supply line PL1 extends long along the second direction Y and can be electrically connected to the central portion of the first electrode portion 131b. As an example, the first power supply line PL1 can be electrically connected to the first electrode portion 131b via an anisotropic conductive film. As another example, the first power supply line PL1 can be electrically connected to the first electrode portion 131b via a conductive substance (or particles) contained in the first adhesive layer 131f.

[0103] The second power supply line PL2 can be disposed on the second cover member 131e. For example, the second power supply line PL2 can be disposed between the second electrode portion 131c and the second cover member 131e and can be electrically connected to the second electrode portion 131c. The second power supply line PL2 extends long along the second direction Y and can be electrically connected to the central portion of the second electrode portion 131c. As an example, the second power supply line PL2 can be electrically connected to the second electrode portion 131c via an anisotropic conductive film. As another example, the second power supply line PL2 can be electrically connected to the second electrode portion 131c via a conductive substance (or particles) contained in the second adhesive layer 131g.

[0104] According to an embodiment of the present specification, the first power supply line PL1 can be arranged so as not to overlap the second power supply line PL2. When the first power supply line PL1 is arranged so as not to overlap the second power supply line PL2, the problem of short - circuit failure between the first power supply line PL1 and the second power supply line PL2 can be improved.

[0105] The pad portion 131p can be electrically connected to the first power supply line PL1 and the second power supply line PL2. For example, the pad portion 131p can be formed at one side edge of either the first cover member 131d or the second cover member 131e so as to be electrically connected to one side (or one end) of each of the first power supply line PL1 and the second power supply line PL2.

[0106] According to an embodiment of the present specification, the pad portion 131p may include a first pad electrode electrically connected to one end (or one side) of the first power supply line PL1, and a second pad electrode electrically connected to one end (or one side) of the second power supply line PL2.

[0107] The first pad electrode is disposed on one side edge of either the first cover member 131d or the second cover member 131e and may be connected to one end (or one side) of the first power supply line PL1. For example, the first pad electrode may penetrate through either the first cover member 131d or the second cover member 131e and be electrically connected to one end (or one side) of the first power supply line PL1.

[0108] The second pad electrode is disposed in parallel with the first pad electrode and may be connected to one end (or one side) of the second power supply line PL2. For example, the second pad electrode may penetrate through either the first cover member 131d or the second cover member 131e and be electrically connected to one end (or one side) of the second power supply line PL2.

[0109] According to an embodiment of the present specification, each of the first power supply line PL1, the second power supply line PL2, and the pad portion 131p may be configured to be transparent, translucent, or opaque.

[0110] The pad portion 131p according to an embodiment of the present specification may be electrically connected to the signal cable 132.

[0111] The signal cable 132 is electrically connected to the pad portion 131p disposed on the vibration element 131, and can supply a vibration drive signal (or an acoustic signal or a voice signal) provided from an acoustic processing circuit to the vibration element 131. The signal cable 132 according to an embodiment of the present specification can include a first terminal electrically connected to the first pad electrode of the pad portion 131p and a second terminal electrically connected to the second pad electrode of the pad portion 131p. For example, the signal cable 132 can be composed of a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board, but the embodiments of the present specification are not limited thereto.

[0112] The acoustic processing circuit can generate an alternating-form vibration drive signal including a first vibration drive signal and a second vibration drive signal based on acoustic data provided from an external acoustic data generation circuit unit. The first vibration drive signal can be either a positive-polarity (+) vibration drive signal or a negative-polarity (-) vibration drive signal, and the second vibration drive signal can be either a positive-polarity (+) vibration drive signal or a negative-polarity (-) vibration drive signal. For example, the first vibration drive signal can be supplied to the first electrode portion 131b via the first terminal of the signal cable 132, the first pad electrode of the pad portion 131p, and the first power supply line PL1. The second vibration drive signal can be supplied to the second electrode portion 131c via the second terminal of the signal cable 132, the second pad electrode of the pad portion 131p, and the second power supply line PL2.

[0113] According to an embodiment of the present specification, the signal cable 132 can be configured to be transparent, translucent, or opaque.

[0114] According to an embodiment of the present specification, the vibration element 131 can be embodied in a thin film form by alternately and repeatedly connecting a first portion 131a1 having piezoelectric characteristics and a second portion 131a2 having flexibility. Thereby, it can be bent into a shape corresponding to the shape of the vibrating member or the object to be vibrated. For example, when the vibration element 131 is connected or coupled to a vibrating member including various curved surfaces via an adhesive member 120, it can be bent into a curved surface shape along the shape of the curved surface portion of the vibrating member 110, and even when bent into a curved surface shape, its reliability such as damage or breakage does not decrease.

[0115] FIG. 8 is a perspective view showing a vibrating portion according to another embodiment of the present specification.

[0116] The vibrating portion 131a according to an embodiment of the present specification can include a plurality of first portions 131a1 and a plurality of second portions 131a2. For example, the plurality of first portions 131a1 and the plurality of second portions 131a2 can be alternately and repeatedly arranged along the first direction X (or the second direction Y). For example, the first direction X can be the lateral direction of the vibrating portion 131a, and the second direction Y can be the longitudinal direction of the vibrating portion 131a intersecting the first direction X, but the embodiments of the present specification are not limited thereto. For example, the first direction X can be the longitudinal direction of the vibrating portion 131a, and the second direction Y can be the lateral direction of the vibrating portion 131a.

[0117] One or more vibration elements 131 according to other embodiments of the present specification can be configured to have flexibility. For example, one or more vibration elements 131 can be configured to bend into a non-planar shape including a curved surface. Thus, one or more vibration elements 131 according to an embodiment of the present specification can be a flexible vibration structure, a flexible oscillator, a flexible vibration generating element, a flexible vibration generator, a flexible acoustic device, a flexible acoustic element, a flexible acoustic generating element, a flexible acoustic generator, a flexible actuator, a flexible speaker, a flexible piezoelectric speaker, a film actuator, a film-type piezoelectric composite actuator, a film speaker, a film-type piezoelectric speaker, or a film-type piezoelectric composite speaker, but the embodiments of the present specification are not limited thereto.

[0118] Each of the plurality of first portions 131a1 may be composed of an inorganic substance portion. The inorganic substance portion may include a piezoelectric material having a piezoelectric effect, a composite piezoelectric material, or an electroactive material.

[0119] Each of the plurality of first portions 131a1 may be composed of a ceramic-based material capable of embodying relatively high vibrations or may be composed of a piezoelectric ceramic having a perovskite crystal structure. The perovskite crystal structure has piezoelectric and inverse piezoelectric effects and may be a plate-like structure having orientation. The perovskite crystal structure is represented by the chemical formula ABO 3 and the A site may consist of a divalent metal element and the B site may consist of a tetravalent metal element. As an example in this specification, in the chemical formula of ABO 3 , the A site and the B site may be cations and O may be an anion. For example, each of the plurality of first portions 131a1 may include at least one of PbTiO 3 , PbZrO 3 , PbZrTiO 3 , BaTiO 3 , and SrTiO 3 , but the examples in this specification are not limited thereto.

[0120] The piezoelectric ceramic may be composed of a single crystal ceramic having a single crystal structure or may be composed of a ceramic material or a polycrystalline ceramic having a polycrystalline structure. The piezoelectric material of the single crystal ceramic is α-AlPO 4 , α-SiO 2 , LiNbO 3 , Tb 2 (MoO 4 ) 3 , Li 2 B 4 O 7Alternatively, it can contain ZnO, but the examples in this specification are not limited to this. The piezoelectric material of the polycrystalline ceramic can be a PZT (lead zirconate titanate) - based material containing lead (Pb), zirconium (Zr), and titanium (Ti), or a PZNN (lead zirconate nickel niobate) - based material containing lead (Pb), zirconium (Zr), nickel (Ni), and niobium (Nb), but the examples in this specification are not limited to this.

[0121] According to another example, the vibrating part 131a does not contain lead (Pb) and can contain at least one or more of CaTiO 3 , BaTiO 3 , and SrTiO 3 , but the examples in this specification are not limited to this.

[0122] According to an embodiment of this specification, each of the plurality of first parts 131a1 can be arranged between the plurality of second parts 131a2 and can have a length parallel to the second direction Y (or the first direction X) while having a first width W1 parallel to the first direction X (or the second direction Y). Each of the plurality of second parts 131a 2 can have a length parallel to the second direction Y (or the first direction X) while having a second width W2 parallel to the first direction X (or the second direction Y). The first width W1 can be the same as or different from the second width W2. For example, the first width W1 can be larger than the second width W2. For example, the first part 131a1 and the second part 131a2 can have a linear or stripe shape with the same or different sizes from each other. Therefore, the vibrating part 131a can have a resonance frequency of 20 kHz or less by having a 2 - 2 composite structure with piezoelectric characteristics of the 2 - 2 vibration mode, but the examples in this specification are not limited to this. For example, the resonance frequency of the vibrating part 131a can be changed by at least one or more of the form, length, and thickness.

[0123] With the vibrating portion 131a, each of the plurality of first portions 131a1 and the plurality of second portions 131a2 can be arranged (or arrayed) parallel to each other in the same plane (or the same layer). By configuring each of the plurality of second portions 131a2 to fill the gap between two adjacent first portions 131a1, it can be connected or adhered to the adjacent first portion 131a1. Thus, the vibrating portion 131a can be extended to a desired size or length by the side connection (or coupling) between the first portion 131a1 and the second portion 131a2.

[0124] With the vibrating portion 131a, the width W2 of each of the plurality of second portions 131a2 can gradually decrease from the middle portion of the vibrating portion 131a or the vibrating element 131 towards both edge portions (or both ends).

[0125] According to an embodiment of the present specification, the second portion 131a2 having the maximum width W2 among the plurality of second portions 131a2 can be located at the portion where the maximum stress is concentrated when the vibrating portion 131a or the vibrating element 131 vibrates in the vertical direction Z (or the thickness direction). The second portion 131a2 having the minimum width W2 among the plurality of second portions 131a2 can be located at the portion where relatively the minimum stress is generated when the vibrating portion 131a or the vibrating element 131 vibrates in the vertical direction Z. For example, the second portion 131a2 having the maximum width W2 among the plurality of second portions 131a2 can be arranged at the middle portion of the vibrating portion 131a, and the second portion 131a2 having the minimum width W2 among the plurality of second portions 131a2 can be arranged at both edge portions of the vibrating portion 131a. Thus, when the vibrating portion 131a or the vibrating element 131 vibrates in the vertical direction Z, the interference of sound waves or the superposition of resonance frequencies generated at the portion where the maximum stress is concentrated can be minimized, thereby improving the sound pressure drop (dip) phenomenon occurring in the low frequency band and improving the flatness of the acoustic characteristics in the low frequency band.

[0126] With the vibrating portion 131a, each of the plurality of first portions 131a1 may have a different size (or width) from each other. For example, the size (or width) of each of the plurality of first portions 131a1 may gradually decrease or increase from the middle portion of the vibrating portion 131a or the vibrating element 131 toward both edge portions (or both ends). Therefore, the sound pressure characteristics of the sound can be improved by various natural vibration frequencies caused by the vibrations of each of the plurality of first portions 131a1 having different sizes from each other, and the reproduction band of the sound can be expanded.

[0127] Each of the plurality of second portions 131a2 may be disposed between the plurality of first portions 131a1. Therefore, in the vibrating portion 131a or the vibrating element 131, the vibration energy due to the links within the unit cell of the first portion 131a1 can be increased by the second portion 131a2, so that the vibration characteristics can be increased, and piezoelectric characteristics and flexibility can be ensured. For example, the second portion 131a2 may be one or more of an epoxy-based polymer, an acrylic-based polymer, and a silicone-based polymer, but the embodiments of the present specification are not limited thereto.

[0128] Each of the plurality of second portions 131a2 according to an embodiment of the present specification may be composed of an organic material portion. For example, by disposing the organic material portion between each of the inorganic material portions, the impact applied to the inorganic material portion (or the first portion) can be absorbed, the stress concentrated on the inorganic material portion can be released, the durability of the vibrating portion 131a or the vibrating element 131 can be improved, and flexibility can be provided to the vibrating portion 131a or the vibrating element 131.

[0129] According to an embodiment of the present specification, the second part 131a2 can have a lower modulus and viscoelasticity than the first part 131a1, thus improving the reliability of the first part 131a1 that is vulnerable to impact due to the brittle characteristics of the first part 131a1. For example, the second part 131a2 can be composed of a material having a loss coefficient of 0.01 to 1 and a modulus (or Young's modulus) of 0.1 to 10 GPa (GigaPascal).

[0130] The organic material part constituting the second part 131a2 can include an organic material, an organic polymer, an organic piezoelectric material, or an organic non-piezoelectric material having flexible characteristics compared to the inorganic material part that is the first part 131a1. For example, the second part 131a2 can be a bonding part, an expansion and contraction part, a bending part, a damping part, or a flexible part having flexibility, etc., but the embodiments of the present specification are not limited thereto.

[0131] According to an embodiment of the present specification, the vibrating part 131a can have a single thin film shape by arranging (or connecting) a plurality of first parts 131a1 and second parts 131a2 in the same plane. For example, the vibrating part 131a can have a structure in which a plurality of first parts 131a1 are connected to one side. For example, the plurality of first parts 131a1 can have a structure connected throughout the vibrating part 131a. For example, the vibrating part 131a can vibrate vertically with respect to the vibrating member 110 by the first part 131a1 having vibration characteristics, and can be bent into a curved surface form by the second part 131a2 having flexibility. Also, in the vibrating part 131a according to an embodiment of the present specification, the size of the first part 131a1 and the size of the second part 131a2 can be set according to the piezoelectric characteristics and flexibility required for the vibrating part 131a or the vibrating element 131. As an example, in the case of the vibrating part 131a that requires piezoelectric characteristics rather than flexibility, the size of the first part 131a1 can be configured to be larger than the size of the second part 131a2. As another example, in the case of the vibrating part 131a that requires flexibility rather than piezoelectric characteristics, the size of the second part 131a2 can be configured to be larger than the size of the first part 131a1. Therefore, since the size of the vibrating part 131a can be adjusted according to the required characteristics, there is an advantage that the design of the vibrating part 131a is easy.

[0132] Referring to FIG. 8, the vibrating part 131a according to another embodiment of the present specification can include a plurality of first parts 131a1 spaced apart from each other along a first direction X and a second direction Y, and a second part 131a2 disposed between the plurality of first parts 131a1.

[0133] Each of the plurality of first parts 131a1 can be arranged spaced apart from each other along each of the first direction X and the second direction Y. For example, each of the plurality of first parts 131a1 can be arranged in a hexahedral lattice shape having the same size as each other. Since each of the plurality of first parts 131a1 is made of substantially the same material as the first part 131a1 described with reference to FIG. 7, the same drawing reference numerals are assigned thereto, and redundant description thereof is omitted.

[0134] The second part 131a2 can be arranged between a plurality of first parts 131a1 along each of the first direction X and the second direction Y. The second part 131a2 can be connected or adhered to the adjacent first parts 131a1 by being configured to fill the gap between two adjacent first parts 131a1 or surround each of the plurality of first parts 131a1. According to an embodiment herein, the width of the second part 131a2 arranged between two adjacent first parts 131a1 along the first direction X may be the same as or different from the width of the first part 131a1, and the width of the second part 131a2 arranged between two adjacent first parts 131a1 along the second direction Y may be the same as or different from the width of the first part 131a1. Since the second part 131a2 is made of substantially the same organic material as the second part 131a2 described with reference to FIG. 7, the same drawing reference numerals are given thereto, and duplicate descriptions thereof are omitted.

[0135] According to another embodiment herein, the vibrating part 131a can have a resonance frequency of 30 MHz or less by including a 1-3 composite structure having piezoelectric characteristics in 1-3 vibration modes, but the embodiments herein are not limited thereto. For example, the resonance frequency of the vibrating part 131a can be changed by at least one of shape, length, and thickness.

[0136] According to another embodiment herein, each of the plurality of first parts 131a1 of the vibrating part 131a can have a circular planar structure. For example, each of the plurality of first parts 131a1 can have a disk shape, but the embodiments herein are not limited thereto. For example, each of the plurality of first parts 131a1 can have a dot shape including an ellipse, a polygon, or a donut shape. It can include a plurality of first parts 131a1 spaced apart from each other along the first direction X and the second direction Y, and a second part 131a2 arranged between the plurality of first parts 131a1.

[0137] According to another embodiment herein, each of the plurality of first parts 131a1 of the vibrating part 131a can have a triangular planar structure. For example, each of the plurality of first parts 131a1 can have a triangular plate shape.

[0138] According to other embodiments of this specification, four adjacent first portions 131a1 among the plurality of first portions 131a1 may be arranged adjacent to each other so as to form a quadrilateral (or a square). Each vertex of the four adjacent first portions 131a1 forming the quadrilateral may be arranged adjacent to the central portion (or the exact center) of the quadrilateral.

[0139] According to other embodiments of this specification, in the vibrating portion 131a, each of the plurality of first portions 131a1 may have a hexagonal planar structure. For example, each of the plurality of first portions 131a1 may have a hexagonal plate shape.

[0140] According to other embodiments of this specification, six adjacent first portions 131a1 among the plurality of first portions 131a1 may be arranged adjacent to each other so as to form a hexagon (or a regular hexagon). Each vertex of the six adjacent first portions 131a1 forming the hexagon may be arranged adjacent to the central portion (or the exact center) of the hexagon.

[0141] FIG. 9 is a diagram showing a vibrating element according to other embodiments of this specification. FIG. 10 is a cross-sectional view taken along line C-C' shown in FIG. 9.

[0142] Referring to FIGS. 9 and 10, the vibrating element 131 according to other embodiments of this specification may include first and second vibration generating portions 131-1 and 131-2.

[0143] Each of the first and second vibration generating units 131-1 and 131-2 can be spaced apart from each other along the first direction X and arranged in an electrically separated manner. Each of the first and second vibration generating units 131-1 and 131-2 can vibrate by alternately repeating contraction and / or expansion by the piezoelectric effect. For example, the first and second vibration generating units 131-1 and 131-2 can be arranged or tiled at a constant interval SD1 along the first direction X. Thus, the vibration element 131 in which the first and second vibration generating units 131-1 and 131-2 are tiled can be a vibration array, a vibration array unit, a vibration module array unit, a vibration array structure, a tiled vibration array, a tiled array module, or a tiled vibration film, but the embodiments of this specification are not limited thereto.

[0144] Each of the first and second vibration generating units 131-1 and 131-2 according to the embodiments of this specification can have a quadrangular shape. For example, each of the first and second vibration generating units 131-1 and 131-2 can have a quadrangle with a width of 5 cm or more. For example, each of the first and second vibration generating units 131-1 and 131-2 can have a square with a size of 5 cm × 5 cm or more, but the embodiments of this specification are not limited thereto.

[0145] By arranging or tiling each of the first and second vibration generating units 131-1 and 131-2 on the same plane, the vibration element 131 can be enlarged in area by tiling the first and second vibration generating units 131-1 and 131-2 having a relatively small size.

[0146] By arranging or tiling each of the first and second vibration generating units 131-1 and 131-2 at a constant interval, it can be embodied as a single vibration device (or a single vibration device) that is not driven independently but is driven in the form of a complete single body. According to an embodiment of this specification, based on the first direction X, the first separation distance SD1 between the first and second vibration generating units 131-1 and 131-2 can be 0.1 mm or more and less than 3 cm, but the embodiments of this specification are not limited thereto.

[0147] According to an embodiment of the present specification, each of the first and second vibration generating units 131-1 and 131-2 is arranged or tiled so as to have a first separation distance (or interval) SD1 of 0.1 mm or more and less than 3 cm, and thus can be driven as a single vibration device. The reproduction band of the sound generated in conjunction with the integral vibration of the first and second vibration generating units 131-1 and 131-2 and the sound pressure characteristics of the sound can each be increased. For example, in order to increase the reproduction band of the sound generated in conjunction with the integral vibration of the first and second vibration generating units 131-1 and 131-2 and increase the sound pressure characteristics of the sound in the low frequency band, for example, at 500 Hz or less, the first and second vibration generating units 131-1 and 131-2 can be arranged at an interval SD1 of 0.1 mm or more and less than 5 mm.

[0148] According to an embodiment of the present specification, when the first and second vibration generating units 131-1 and 131-2 are arranged at an interval SD1 of less than 0.1 mm or without an interval SD1, during the vibration of each of the first and second vibration generating units 131-1 and 131-2, the reliability of the first and second vibration generating units 131-1 and 131-2 or the vibration element 131 may be reduced due to the generation of cracks or damage caused by physical contact between them.

[0149] According to an embodiment of the present specification, when the first and second vibration generating units 131-1 and 131-2 are arranged at an interval SD1 of 3 cm or more, the first and second vibration generating units 131-1 and 131-2 may not be driven as a single vibration device due to the independent vibrations of the first and second vibration generating units 131-1 and 131-2. Therefore, the reproduction band of the sound generated by the vibration of the first and second vibration generating units 131-1 and 131-2 and the sound pressure characteristics of the sound may be reduced. For example, when the first and second vibration generating units 131-1 and 131-2 are arranged at an interval SD1 of 3 cm or more, the acoustic characteristics and sound pressure characteristics in the low frequency band, for example, at 500 Hz or less, may each be reduced.

[0150] According to an embodiment of the present specification, when the first and second vibration generating units 131-1 and 131-2 are arranged at an interval SD1 of 5 mm, since each of the first and second vibration generating units 131-1 and 131-2 is not driven as a single vibration device, the acoustic characteristics and sound pressure characteristics may each decrease in a low frequency band, for example, 200 Hz or less.

[0151] According to another example of the present specification, when the first and second vibration generating units 131-1 and 131-2 are arranged at an interval SD1 of 1 mm, the first and second vibration generating units 131-1 and 131-2 vibrate as a single vibration device, whereby the reproduction band of the sound can be increased, and the sound pressure characteristics in the low frequency band sound, for example, 500 Hz or less, can be increased. For example, when the first and second vibration generating units 131-1 and 131-2 are arranged at an interval SD1 of 1 mm, the vibration element 131 can be embodied as a vibration body having a large area by optimizing the separation distance between the first and second vibration generating units 131-1 and 131-2. Thereby, it can be driven as a large-area vibration body by the single-body vibration of the first and second vibration generating units 131-1 and 131-2, and thereby each of the reproduction band of the sound generated in conjunction with the large-area vibration of the vibration element 131 and the acoustic characteristics and / or sound pressure characteristics in the low frequency band can be increased or improved.

[0152] Therefore, in order to embody the single-body vibration (or a single vibration device) of the first and second vibration generating units 131-1 and 131-2, the first separation distance SD1 between the first and second vibration generating units 131-1 and 131-2 can be set to be 0.1 mm or more and less than 3 cm. Also, in order to increase the sound pressure characteristics of the low frequency band sound while embodying the single-body vibration (or a single vibration device) of the first and second vibration generating units 131-1 and 131-2, the first separation distance SD1 between the first and second vibration generating units 131-1 and 131-2 can be set to be 0.1 mm or more and less than 5 mm.

[0153] Each of the first and second vibration generating units 131-1 and 131-2 according to an embodiment of the present specification may include a vibration unit 131a, a first electrode unit 131b, and a second electrode unit 131c.

[0154] Each of the vibration parts 131a of the first and second vibration generating parts 131-1 and 131-2 can include a piezoelectric material or an electroactive material having a piezoelectric effect. For example, since each of the vibration parts 131a of the first and second vibration generating parts 131-1 and 131-2 is substantially the same as any one of the vibration parts 131a described with reference to FIGS. 7 and 8, the same reference numerals are given to them, and redundant description thereof is omitted. For example, in FIG. 9, it is configured by the vibration part 131a of FIG. 8, but it can be configured as the vibration part 131a of FIG. 7.

[0155] According to an embodiment of the present specification, each of the first and second vibration generating parts 131-1 and 131-2 can include any one of the vibration parts 131a described with reference to FIGS. 7 and 8 or can include different vibration parts 131a from each other.

[0156] The first electrode part 131b is disposed on the first surface of the vibration part 131a and can be electrically connected to the first surface of the vibration part 131a. Since this is substantially the same as the first electrode part 131b described with reference to FIG. 7, the same reference numeral is given to it, and redundant description thereof is omitted.

[0157] The second electrode part 131c is disposed on the second surface of the vibration part 131a and can be electrically connected to the second surface of the vibration part 131a. Since this is the same as the second electrode part 131c described with reference to FIG. 7, the same reference numeral is given to it, and redundant description thereof is omitted.

[0158] The vibration element 131 according to another embodiment of the present specification can further include a first cover member 131d and a second cover member 131e.

[0159] The first cover member 131d can be disposed on the first surface of the vibration element 131. For example, by covering the first electrode portions 131b disposed on the respective first surfaces of the first and second vibration generating portions 131-1 and 131-2, the first cover member 131d can be commonly connected to the respective first surfaces of the first and second vibration generating portions 131-1 and 131-2 or can commonly support the respective first surfaces of the first and second vibration generating portions 131-1 and 131-2. Thereby, the first cover member 131d can protect the respective first surfaces or the first electrode portions 131b of the first and second vibration generating portions 131-1 and 131-2.

[0160] The second cover member 131e can be disposed on the second surface of the vibration element 131. For example, by covering the second electrode portions 131c disposed on the respective second surfaces of the first and second vibration generating portions 131-1 and 131-2, the second cover member 131e can be commonly connected to the respective second surfaces of the first and second vibration generating portions 131-1 and 131-2 or can commonly support the respective second surfaces of the first and second vibration generating portions 131-1 and 131-2. Thereby, the second cover member 131e can protect the respective second surfaces or the second electrode portions 131c of the first and second vibration generating portions 131-1 and 131-2.

[0161] Each of the first cover member 131d and the second cover member 131e according to an embodiment of the present specification can include one or more materials among plastic, fiber, carbon, and wood, but the embodiments of the present specification are not limited thereto. For example, each of the first cover member 131d and the second cover member 131e can include the same or different materials. For example, each of the first cover member 131d and the second cover member 131e can be a polyimide film or a polyethylene terephthalate film, but the embodiments of the present specification are not limited thereto.

[0162] According to an embodiment of the present specification, the first cover member 131d can be disposed on the first surface of each of the first and second vibration generating units 131-1 and 131-2 via the first adhesive layer 131f. For example, the first cover member 131d can be directly disposed on the first surface of each of the first and second vibration generating units 131-1 and 131-2 by a film laminating process performed via the first adhesive layer 131f. Thus, each of the first and second vibration generating units 131-1 and 131-2 can be integrated (or disposed) or tiled on the first cover member 131d so as to have a constant interval SD1.

[0163] According to an embodiment of the present specification, the second cover member 131e can be disposed on the second surface of each of the first and second vibration generating units 131-1 and 131-2 via the second adhesive layer 131g. For example, the second cover member 131e can be directly disposed on the second surface of each of the first and second vibration generating units 131-1 and 131-2 by a film laminating process performed via the second adhesive layer 131g. Thus, each of the first and second vibration generating units 131-1 and 131-2 can be integrated (or disposed) or tiled on the second cover member 131e so as to have a constant interval SD1.

[0164] The first adhesive layer 131f can be disposed between the first and second vibration generating units 131-1 and 131-2 and on the first surface of each of the first and second vibration generating units 131-1 and 131-2. For example, the first adhesive layer 131f is formed on the rear surface (or inner surface) of the first cover member 131d facing the first surface of each of the first and second vibration generating units 131-1 and 131-2, filled between the first and second vibration generating units 131-1 and 131-2, and can be disposed between the first surface of each of the first and second vibration generating units 131-1 and 131-2 and the first cover member 131d.

[0165] The second adhesive layer 131g can be disposed between the first and second vibration generating portions 131-1 and 131-2, and on the second surfaces of the first and second vibration generating portions 131-1 and 131-2, respectively. For example, the second adhesive layer 131g is formed on the front surface (or inner surface) of the second cover member 131e facing the second surfaces of the first and second vibration generating portions 131-1 and 131-2, filled between the first and second vibration generating portions 131-1 and 131-2, and can be disposed between the second surfaces of the first and second vibration generating portions 131-1 and 131-2 and the second cover member 131e.

[0166] The first and second adhesive layers 131f and 131g can be connected or joined to each other between the first and second vibration generating portions 131-1 and 131-2. Thus, each of the first and second vibration generating portions 131-1 and 131-2 can be surrounded by the first and second adhesive layers 131f and 131g. For example, the first and second adhesive layers 131f and 131g can be configured between the first cover member 131d and the second cover member 131e so as to completely surround the first and second vibration generating portions 131-1 and 131-2, respectively. For example, each of the first and second vibration generating portions 131-1 and 131-2 can be embedded or incorporated between the first adhesive layer 131f and the second adhesive layer 131g.

[0167] Each of the first and second adhesive layers 131f and 131g according to an embodiment of the present specification can include an electrically insulating material that has adhesiveness and is capable of compression and restoration. For example, each of the first and second adhesive layers 131f and 131g can include an epoxy resin, an acrylic resin, a silicone resin, or a urethane resin, but the embodiments of the present specification are not limited thereto. For example, each of the first and second adhesive layers 131f and 131g can be configured to be transparent, translucent, or opaque.

[0168] The vibration element 131 according to another embodiment of the present specification can further include a first power supply line PL1, a second power supply line PL2, and a pad portion 131p.

[0169] The first power supply line PL1 can be arranged on the first cover member 131d. For example, the first power supply line PL1 can be arranged on the rear surface of the first cover member 131d facing the first surfaces of the first and second vibration generating parts 131-1 and 131-2 respectively. The first power supply line PL1 can be electrically connected to the first electrode parts 131b of the first and second vibration generating parts 131-1 and 131-2 respectively. For example, the first power supply line PL1 can be directly electrically connected to the first electrode parts 131b of the first and second vibration generating parts 131-1 and 131-2 respectively. As an example, the first power supply line PL1 can be electrically connected to the first electrode parts 131b of the first and second vibration generating parts 131-1 and 131-2 respectively via an anisotropic conductive film. As another example, the first power supply line PL1 can be electrically connected to the first electrode parts 131b of the first and second vibration generating parts 131-1 and 131-2 respectively via a conductive substance (or particles) contained in the first adhesive layer 131f.

[0170] The first power supply line PL1 according to an embodiment of the present specification can include first and second upper power supply lines PL11 and PL12 arranged along the second direction Y. For example, the first upper power supply line PL11 can be electrically connected to the first electrode part 131b of the first vibration generating part 131-1. The second upper power supply line PL12 can be electrically connected to the first electrode part 131b of the second vibration generating part 131-2.

[0171] The second power supply line PL2 can be arranged on the second cover member 131e. For example, the second power supply line PL2 can be arranged on the front surface of the second cover member 131e facing the second surfaces of the first and second vibration generating parts 131-1 and 131-2 respectively. The second power supply line PL2 can be electrically connected to the second electrode parts 131c of the first and second vibration generating parts 131-1 and 131-2 respectively. For example, the second power supply line PL2 can be directly electrically connected to the second electrode parts 131c of the first and second vibration generating parts 131-1 and 131-2 respectively. As an example, the second power supply line PL2 can be electrically connected to the second electrode parts 131c of the first and second vibration generating parts 131-1 and 131-2 respectively through an anisotropic conductive film. As another example, the second power supply line PL2 can be electrically connected to the second electrode parts 131c of the first and second vibration generating parts 131-1 and 131-2 respectively through a conductive substance (or particles) contained in the second adhesive layer 131g.

[0172] The second power supply line PL2 according to an embodiment of the present specification can include first and second lower power supply lines PL21 and PL22 arranged along the second direction Y. The first lower power supply line PL21 can be electrically connected to the second electrode part 131c of the first vibration generating part 131-1. According to the embodiment of the present specification, the first upper power supply line PL11 can be arranged so as not to overlap with the first lower power supply line PL21. When the first upper power supply line PL11 is arranged so as not to overlap with the first lower power supply line PL21, the problem of short-circuit failure between the first upper power supply line PL11 and the first lower power supply line PL21 can be improved. According to the embodiment of the present specification, the second upper power supply line PL12 can be arranged so as not to overlap with the second lower power supply line PL22. When the second upper power supply line PL12 is arranged so as not to overlap with the second lower power supply line PL22, the problem of short-circuit failure between the second upper power supply line PL12 and the second lower power supply line PL22 can be improved.

[0173] The pad portion 131p can be electrically connected to the first power supply line PL1 and the second power supply line PL2. For example, the pad portion 131p can be configured on one side edge of either the first cover member 131d or the second cover member 131e so as to be electrically connected to one side (or one end) of each of the first power supply line PL1 and the second power supply line PL2.

[0174] The pad portion 131p according to an embodiment of the present specification can include a first pad electrode electrically connected to one end (or one side) of the first power supply line PL1, and a second pad electrode electrically connected to one end (or one side) of the second power supply line PL2.

[0175] The first pad electrode can be commonly connected to one end (or one side) of each of the first and second upper power supply lines PL11 and PL12 of the first power supply line PL1. For example, one end of each of the first and second upper power supply lines PL11 and PL12 can branch from the first pad electrode. The second pad electrode can be commonly connected to one end of each of the first and second lower power supply lines PL21 and PL22 of the second power supply line PL2. For example, one end (or one side) of each of the first and second lower power supply lines PL21 and PL22 can branch from the second pad electrode.

[0176] The vibration element 131 according to another embodiment of the present specification can further include a signal cable 132.

[0177] The signal cable 132 is electrically connected to the pad portion 131p disposed on the vibration element 131, and can supply a vibration drive signal (or an acoustic signal) provided from the acoustic processing circuit to the vibration element 131. The signal cable 132 according to an embodiment of the present specification can include a first terminal electrically connected to the first pad electrode of the pad portion 131p and a second terminal electrically connected to the second pad electrode of the pad portion 131p. For example, it can be composed of a flexible printed circuit cable, a flexible flat cable, a single-sided flexible printed circuit, a single-sided flexible printed circuit board, a flexible multilayer printed circuit, or a flexible multilayer printed circuit board, but the embodiments of the present specification are not limited thereto.

[0178] The acoustic processing circuit can generate a vibration drive signal in an alternating current form including a first vibration drive signal and a second vibration drive signal based on acoustic data. The first vibration drive signal can be either a positive-polarity (+) vibration drive signal or a negative-polarity (-) vibration drive signal, and the second vibration drive signal can be either a positive-polarity (+) vibration drive signal or a negative-polarity (-) vibration drive signal. For example, the first vibration drive signal can be supplied to the first electrode portions 131b of the first and second vibration generating portions 131-1 and 131-2 via the first terminal of the signal cable 132, the first pad electrode of the pad portion 131p, and the first power supply line PL1. The second vibration drive signal can be supplied to the second electrode portions 131c of the first and second vibration generating portions 131-1 and 131-2 via the second terminal of the signal cable 132, the second pad electrode of the pad portion 131p, and the second power supply line PL2.

[0179] FIG. 11 is a diagram showing the acoustic output characteristics of the acoustic device according to the embodiment of the present specification.

[0180] The acoustic output characteristics can be measured by acoustic analysis equipment. The acoustic analysis equipment may be composed of a control PC (Control PC), a sound card for transmitting and receiving sound, an amplifier (amplifier) for amplifying and transmitting the sound generated from the sound card to the acoustic device, and a microphone for collecting the sound generated from the vibrating member through the acoustic device. For example, the microphone may be arranged at the center of the acoustic device, and the distance between the vibrating member and the microphone may be 50 cm. The sound of the acoustic device can be measured with the microphone perpendicular to it. The sound collected by the microphone is input into the control PC via the sound card, and this is checked by the control program to analyze the sound of the acoustic device. For example, the frequency response characteristics in the frequency range of 100 Hz to 20 kHz can be measured using a pulse program.

[0181] In FIG. 11, the horizontal axis indicates the frequency (Frequency, Hz (hertz)), and the vertical axis indicates the sound pressure (Sound Pressure Level; SPL, dB (decibel)). The solid line in FIG. 11 is the acoustic output characteristic of the acoustic device in FIGS. 3 to 5. In the acoustic devices of FIGS. 3 to 5, the connecting member is made of a silicon material. The dotted line in FIG. 11 indicates the acoustic output characteristic of the acoustic device composed of the connecting member provided between the vibrating member and the enclosure.

[0182] Referring to FIG. 11, it can be seen that the solid line has improved acoustic output characteristics in the frequency ranges of 2 kHz to 4 kHz and 2 kHz to 10 kHz compared to the dotted line. For example, the solid line can improve the peak and / or dip phenomena in the midrange band and / or high-frequency band compared to the dotted line. Therefore, the solid line can improve the sound pressure in the midrange band and / or high-frequency band compared to the dotted line. For example, it can be seen that the solid line improves by an average of about 20 dB or more at 2 kHz to 4 kHz and about 5 dB or more in the frequency range of 6 kHz to 10 kHz compared to the dotted line.

[0183] When applying the acoustic device 100 to a flexible device, there are problems that cracks may occur or it is prone to cracking due to the brittle characteristics of the vibration device 130 which is a piezoelectric element. For example, when cracks occur due to an external impact, an electrical short circuit occurs in the first electrode portion 131b and the second electrode portion 131c provided in the vibration device 130. And there are problems that the vibration device 130 is damaged in the transportation process before attaching the vibration device 130 to the vibration member 110 or in the process of attaching the vibration device 130 to the vibration member 110. Therefore, the inventors of the present specification have conducted various researches and experiments to increase the rigidity of the vibration device 130 and embody a vibration device that is resistant to impacts. Through various researches and experiments, a new vibration device having rigidity and impact resistance has been invented, which will be described below.

[0184] FIG. 12 is another cross-sectional view of the line B-B' shown in FIG. 6.

[0185] Referring to FIG. 12, the acoustic device 100 according to another embodiment of the present specification can further include one or more buffer members. The one or more buffer members can protect the vibration device 130 from external impacts. The vibration portion 131a in FIG. 12 can also be configured by the vibration portion in FIG. 8.

[0186] One or more buffer members according to the embodiments of the present specification can be provided under the vibration device 130. The one or more buffer members can include a first buffer member 135 and a second buffer member 137. In FIG. 12, the first cover member 131d can be connected or coupled to the vibration member 110. For example, the vibration device 130 including the first cover member 131d can be connected or coupled to the vibration member 110 via the adhesive member 120. According to another embodiment of the present specification, the vibration device 130 including the second cover member 131e can be connected or coupled to the vibration member 110 via the adhesive member 120.

[0187] The first buffer member 135 according to the embodiment of the present specification can be disposed on or above the second cover member 131e. The first buffer member 135 according to another embodiment of the present specification can be disposed on or above the first cover member 131d. The second buffer member 137 can be disposed on the first buffer member 135. The first buffer member 135 can be disposed closer to the vibration device 130 than the second buffer member 137. The first buffer member 135 can be made of a material having an elastic coefficient different from that of the second buffer member 137. For example, the elastic coefficient (or Young's modulus) of the first buffer member 135 may be different from the elastic coefficient (or Young's modulus) of the second buffer member 137. For example, the first buffer member 135 can be made of a material having an elastic coefficient lower than that of the second buffer member 137.

[0188] The second buffer member 137 according to the embodiment of the present specification can be made of a material having an elastic coefficient capable of dispersing an external impact. For example, the second buffer member 137 can be made of a material having an elastic coefficient capable of dispersing an external impact in the horizontal direction of the vibration device 130. For example, the second buffer member 137 can be made of a material having a high elastic coefficient. Thereby, the impact energy locally generated by an external impact can be widely dispersed. Since the vibration device 130 according to the embodiment of the present specification can be reinforced in rigidity by the second buffer member 137, problems such as cracks generated in the transportation process or the adhesion process of the vibration device 130 can be solved. For example, the second buffer member 137 can be made of polyethylene terephthalate or the like, but the embodiment of the present specification is not limited thereto. For example, the second buffer member 137 can be an impact dispersion member or an impact dispersion layer, but the embodiment of the present specification is not limited thereto.

[0189] The first buffer member 135 according to the embodiment of the present specification can be made of a material capable of absorbing external impacts. For example, since the first buffer member 135 is configured closer to the vibration device 130 than the second buffer member 137, it can be made of a material capable of absorbing external impacts. For example, the first buffer member 135 can be made of a material having an elastic coefficient capable of absorbing external impacts. For example, the first buffer member 135 can be made of a material having an elastic coefficient lower than that of the second buffer member 137. For example, the first buffer member 135 can be made of polyurethane, or polyurethane foam, etc., but the embodiments of the present specification are not limited thereto. For example, the first buffer member 135 can be an impact absorbing member or an impact absorbing layer, but the embodiments of the present specification are not limited thereto.

[0190] According to the embodiment of the present specification, since the first buffer member 135 and the second buffer member 137 are provided, the vibration device 130 can be protected from external impacts, and cracks that may occur in the transportation process or the adhesion process of the vibration device 130 can be improved.

[0191] FIGS. 13A and 13B are diagrams showing buffer members according to other embodiments of the present specification.

[0192] Referring to FIGS. 13A and 13B, a pattern can be further formed on the second buffer member 137. For example, the pattern can be attached to the vibrating member 110 having a curved surface or configured to ensure flexibility in consideration of the lamination process. The pattern can be configured in a direction perpendicular to the direction in which the vibrating member 110 bends. The pattern can be a slit or a groove, but the embodiments of the present specification are not limited thereto.

[0193] Referring to FIG. 13A, the pattern can be configured uniformly. Referring to FIG. 13B, the pattern can be configured non-uniformly. The shape of the pattern can be configured in various ways, but the embodiments of the present specification are not limited thereto.

[0194] The following [Table 1] shows the ball-drop test results according to the experimental examples and the examples of this specification.

Table 1

[0195] In [Table 1], the experimental example is an acoustic device in which the first buffer member and the second buffer member according to the examples of this specification are not configured. Examples 1 and 2 are acoustic devices in which the first buffer member and the second buffer member according to the examples of this specification are configured as described with reference to FIG. 12. The first buffer members of Examples 1 and 2 were made of polyurethane foam. The first buffer members of Examples 1 and 2 were made of polyethylene terephthalate. In Example 1, the thickness of the first buffer member was 1 mm, and the thickness of the second buffer member was 0.1 mm. In Example 2, the thickness of the first buffer member was 3 mm, and the thickness of the second buffer member was 0.1 mm. The materials of the first buffer member and the second buffer member do not limit the content of this specification. Also, the thicknesses of the first buffer member and the second buffer member do not limit the content of this specification.

[0196] In the ball-drop test, the diameter of the ball was 18 mm and the weight was 21.68 g. The distance between the ball-drop cylinder device that guides the fall of the ball and the acoustic device was set to 5 cm. The ball-drop test can be a test in which the ball is dropped through the ball-drop cylinder while changing the ball-drop height within the cylinder of the ball-drop cylinder device provided above the acoustic device to check for damage to the acoustic device. For example, it can be interpreted that the higher the ball-drop height at which damage to the acoustic device begins to occur, the better the acoustic device withstands external impacts. For example, in the device of FIG. 12, the ball was dropped while changing the ball-drop height from above the second buffer member 137 to check for damage to the acoustic device. For example, in the ball-drop test, in the acoustic device of FIG. 2, it was composed of the vibration member 110, the adhesive member 120, and the vibration device 130 of FIG. 2, excluding the connecting member 140 and the enclosure 150. The vibration device 130 was composed of the device of FIG. 12. After inverting the acoustic device of FIG. 12 upside down, the ball was dropped while changing the ball-drop height from above the second buffer member 137 to check for damage to the acoustic device.

[0197] [Table 1] shows the ball-drop height at which damage, such as cracks, begins to occur in the acoustic device in the ball-drop test. In the experimental example, cracks occurred in the acoustic device at a height of 4 cm. In Example 1, cracks occurred in the acoustic device at a height of 23 cm. In Example 2, cracks occurred in the acoustic device at a height of 50 cm or more. Therefore, it can be seen that the acoustic device to which the buffer member is applied has improved rigidity and / or impact resistance compared to the experimental example to which the buffer member was not applied. Since Example 2 has a thicker first buffer member than Example 1, it can be seen that Example 2 has improved rigidity and / or impact resistance compared to Example 1. For example, since Examples 1 and 2 have a higher height at which damage occurs to the acoustic device compared to the experimental example, it can be seen that the acoustic devices of Examples 1 and 2 can withstand external impacts better and have improved rigidity and / or impact resistance.

[0198] FIG. 14 is a diagram showing a transport device according to an embodiment of the present specification. FIG. 15 is a cross-sectional view showing the transport device according to an embodiment of the present specification.

[0199] Referring to FIGS. 14 and 15, the transport device according to the embodiment of the present specification may include one or more acoustic generators 10 configured to output sound to one or more of the exterior material 520 and the interior material 530. For example, one or more of the exterior material 520 and the interior material 530 can output sound by the vibration of one or more acoustic generators 10. In FIGS. 14 and 15, the portion indicated by the dotted line indicates the portion where one or more acoustic generators 10 can be arranged.

[0200] One or more acoustic generators 10 can be arranged on the exterior material 520, the interior material 530, or between the exterior material 520 and the interior material 530 to output sound. For example, one or more acoustic generators 10 can be arranged on at least one of the exterior material 520, the interior material 530, and between the exterior material 520 and the interior material 530 to output sound.

[0201] The interior material according to the embodiment of the present specification can include at least one of a dashboard 530A, a pillar interior material 530B, a roof interior material 530C, a door interior material 530D, a seat interior material, a handle interior material 530F, a floor interior material 530G, and a rear package interior material 530J. One or more acoustic generators 10 can vibrate at least one of the dashboard 530A, the pillar interior material 530B, the roof interior material 530C, the door interior material 530D, the seat interior material, the handle interior material 530F, the floor interior material 530G, and the rear package interior material 530J. One or more acoustic generators 10 can be arranged between at least one of the dashboard 530A, the pillar interior material 530B, the roof interior material 530C, the door interior material 530D, the seat interior material, the handle interior material 530F, and the floor interior material 530G and the exterior material 520. Thereby, sound of one or more channels can be output.

[0202] For example, at least one of the one or more acoustic generators 10 may be configured to be transparent or translucent. For example, when the glass is entirely transparent, at least one of the one or more acoustic generators 10 is configured to be transparent and may be disposed in the middle region or the peripheral region of the glass window. When the glass window includes a translucent portion or an opaque portion, at least one of the one or more acoustic generators 10 is configured to be translucent or opaque and may be disposed in the translucent portion or the opaque portion of the glass window. For example, at least one of the one or more acoustic generators 10 may be a transparent vibrator, a transparent vibration generator, a transparent acoustic generator, etc., but the embodiments of this specification are not limited thereto.

[0203] Referring to FIGS. 14 and 15, one or more acoustic generators 10 according to the embodiments of this specification are disposed between the dash panel and the dashboard 530A and may be configured to vibrate the dashboard 530A indirectly or directly to output sound. For example, since one or more acoustic generators 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, duplicate descriptions thereof are omitted. For example, one or more acoustic generators 10 may be a dashboard speaker or a first speaker, etc., but the embodiments of this specification are not limited thereto.

[0204] According to the embodiments of the present specification, at least one of the dashboard and the dashboard 530A may include a first region corresponding to the driver's seat DS, a second region corresponding to the front passenger seat FPS, and a third region (or intermediate region) between the first region and the second region. At least one of the dashboard and the dashboard 530A may include a fourth region inclined while facing the front passenger seat FPS. According to the embodiments of the present specification, one or more acoustic generators 10 may be arranged so as to vibrate at least one of the first to fourth regions of the dashboard 530A. For example, one or more acoustic generators 10 may be arranged in each of the first and second regions of the dashboard 530A, or may be arranged in each of the first to fourth regions. For example, one or more acoustic generators 10 may be arranged in each of the first and second regions of the dashboard 530A, or may be arranged in at least one of the first to fourth regions. For example, one or more acoustic generators 10 may be configured to output an acoustic wave of 150 Hz to 20 kHz. For example, one or more acoustic generators 10 configured to vibrate at least one of the first to fourth regions of the dashboard 530A may have the same or different acoustic output characteristics from each other. For example, one or more acoustic generators 10 configured to vibrate each of the first to fourth regions of the dashboard 530A may have the same or different acoustic output characteristics from each other.

[0205] One or more acoustic generators 10 according to the embodiments of the present specification may be arranged between the pillar panel and the pillar interior material 530B, and may be configured to output sound by vibrating the pillar interior material 530B indirectly or directly. For example, since one or more acoustic generators 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, redundant description thereof will be omitted. One or more acoustic generators 10 may be a pillar speaker, a tweeter speaker, or a second speaker, etc., but the embodiments of the present specification are not limited thereto.

[0206] According to the embodiments of this specification, the pillar panel can include a first pillar (or A pillar) disposed on both sides of the front glass window, a second pillar (or B pillar) disposed on both sides of the center of the vehicle body, and a third pillar (or C pillar) disposed on both sides of the rear side of the vehicle body. The pillar interior material 530B can include a first pillar interior material 530B1 covering the first pillar, a second pillar interior material 530B2 covering the second pillar, and a third pillar interior material 530B3 covering the third pillar. According to the embodiments of this specification, at least one of the one or more acoustic generating devices 10 is disposed between the first pillar and the first pillar interior material 530B1, between the second pillar and the second pillar interior material 530B2, and between the third pillar and the third pillar interior material 530B3, so that at least one of the first to third pillar interior materials 530B1, 530B2, 530B3 can be vibrated. For example, the one or more acoustic generating devices 10 can be configured to output an acoustic signal at 2 kHz to 20 kHz, but the embodiments of this specification are not limited thereto. For example, the one or more acoustic generating devices 10 can be configured to output an acoustic signal at 150 Hz to 20 kHz. For example, the one or more acoustic generating devices 10 configured to vibrate at least one of the first to third pillar interior materials 530B1, 530B2, 530B3 can have the same or different acoustic output characteristics from each other.

[0207] The one or more acoustic generating devices 10 according to the embodiments of this specification can be disposed between the roof panel and the roof interior material 530C, and can be configured to output an acoustic signal by indirectly or directly vibrating the roof interior material 530C. For example, the one or more acoustic generating devices 10 can be configured to be transparent or semi-transparent. For example, since the one or more acoustic generating devices 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, redundant descriptions thereof are omitted. For example, the one or more acoustic generating devices 10 can be a roof speaker or a third speaker, etc., but the embodiments of this specification are not limited thereto.

[0208] According to the embodiments of the present specification, at least one or more of the roof panel and the roof interior material 530C covering the roof panel may include a first region corresponding to the driver's seat DS, a second region corresponding to the front passenger seat FPS, a third region corresponding to the area between the driver's seat DS and the front passenger seat FPS, a fourth region corresponding to the first rear passenger seat RPS1 behind the driver's seat DS, a fifth region corresponding to the second rear passenger seat RPS2 behind the front passenger seat FPS, a sixth region corresponding to the area between the first rear passenger seat RPS1 and the second rear passenger seat RPS2, and a seventh region between the third region and the sixth region. For example, one or more acoustic generators 10 may be configured to vibrate at least one or more of the first to seventh regions of the roof interior material 530C. For example, one or more acoustic generators 10 may be configured to output an acoustic wave of 150 Hz to 20 kHz. For example, one or more acoustic generators 10 configured to vibrate at least one or more of the first to seventh regions of the roof interior material 530C may have the same or different acoustic output characteristics from each other. For example, one or more acoustic generators 10 configured to vibrate each of the first to seventh regions of the roof interior material 530C may have the same or different acoustic output characteristics from each other. For example, at least one or more of one or more acoustic generators 10 configured to vibrate at least one or more of the first to seventh regions of the roof interior material 530C may be configured to output an acoustic wave of 2 kHz to 20 kHz, and the rest may be configured to output an acoustic wave of 150 Hz to 20 kHz. For example, at least one or more of one or more acoustic generators 10 configured to vibrate each of the first to seventh regions of the roof interior material 530C may be configured to output an acoustic wave of 2 kHz to 20 kHz, and the rest may be configured to output an acoustic wave of 150 Hz to 20 kHz.

[0209] According to the embodiments of the present specification, one or more acoustic generating devices 10 may be disposed between the door frame and the door interior material 530D, and may be configured to output sound by vibrating the door interior material 530D indirectly or directly. For example, since one or more acoustic generating devices 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, redundant descriptions thereof are omitted. For example, one or more acoustic generating devices 10 may be a door speaker or a fourth speaker, etc., but the embodiments of the present specification are not limited thereto.

[0210] According to the embodiments of the present specification, at least one of the door frame and the door interior material 530D may include an upper region, a middle region, and a lower region with respect to the height direction Z. For example, by disposing one or more acoustic generating devices 10 in at least one of the upper region, the middle region, and the lower region between the door frame and the door interior material 530D, at least one of the upper region, the middle region, and the lower region of the door interior material 530D can be vibrated.

[0211] According to the embodiments of the present specification, the upper region of the door interior material 530D may include a curved surface portion having a relatively small radius of curvature. One or more acoustic generating devices 10 for vibrating the upper region of the door interior material 530D can be bent into a shape that exactly corresponds to the shape (or surface shape) of the curved surface portion of the upper region of the door interior material 530D by the second portion 131a2 having the flexibility of the vibration element 131 shown in one or more of the acoustic devices of FIGS. 6 to 10.

[0212] According to the embodiments of the present specification, the door frame can include a first door frame (or left front door frame), a second door frame (or right front door frame), a third door frame (or left rear door frame), and a fourth door frame (or right rear door frame). According to the embodiments of the present specification, the door interior material 530D can include a first door interior material (or left front door interior material) 530D1 that covers the first door frame, a second door interior material (or right front door interior material) 530D2 that covers the second door frame, a third door interior material (or left rear door interior material) 530D3 that covers the third door frame, and a fourth door interior material (or right rear door interior material) 530D4 that covers the fourth door frame. For example, one or more acoustic generators 10 are arranged in at least one of the upper region, the middle region, and the lower region between each of the first to fourth door frames and the first to fourth door interior materials 530D1 to 530D4, and can vibrate at least one of the upper region, the middle region, and the lower region of each of the first to fourth door interior materials 530D1 to 530D4.

[0213] According to the embodiments of the present specification, one or more acoustic generators 10 configured to vibrate the upper region of each of the first to fourth door interior materials 530D1 to 530D4 can be configured to output sound in the range of 2 kHz to 20 kHz or can be configured to output sound in the range of 150 Hz to 20 kHz. For example, one or more acoustic generators 10 configured to vibrate at least one of the upper regions of the first to fourth door interior materials 530D1 to 530D4 can be configured to output sound in the range of 2 kHz to 20 kHz or can be configured to output sound in the range of 150 Hz to 20 kHz.

[0214] According to the embodiments of this specification, one or more acoustic generators 10 configured to vibrate at least one or more intermediate regions and / or lower regions among the first to fourth door interior materials 530D1 to 530D4 may be configured to output sound in the range of 150 Hz to 20 kHz. One or more acoustic generators 10 configured to vibrate each of the intermediate regions and / or lower regions of the first to fourth door interior materials 530D1 to 530D4 may be configured to output sound in the range of 150 Hz to 20 kHz. For example, one or more acoustic generators 10 configured to vibrate at least one or more intermediate regions and / or lower regions among the first to fourth door interior materials 530D1 to 530D4 may be any one or more of a woofer, a mid-woofer, and a sub-woofer. For example, one or more acoustic generators 10 configured to vibrate each of the intermediate regions and / or lower regions of the first to fourth door interior materials 530D1 to 530D4 may be any one or more of a woofer, a mid-woofer, and a sub-woofer.

[0215] The sounds output from each of the one or more acoustic generators 10 arranged in the first door interior material 530D1 and the one or more acoustic generators 10 arranged in the second door interior material 530D2 may be combined and output. For example, the sounds output from at least one or more of the one or more acoustic generators 10 arranged in the first door interior material 530D1 and the one or more acoustic generators 10 arranged in the second door interior material 530D2 may be combined and output. And the sound output by the one or more acoustic generators 10 arranged in the third door interior material 530D3 and the sound output by the one or more acoustic generators 10 arranged in the fourth door interior material 530D4 may be combined with each other and output.

[0216] According to the embodiments of this specification, the upper regions of each of the first to fourth door trim materials 530D1 to 530D4 can include a first upper region adjacent to the dashboard 530A, a second upper region adjacent to the rear seats RPS1, RPS2, RPS3, and a third upper region between the first upper region and the second upper region. For example, one or more acoustic generators 10 can be arranged in one or more of the first to third upper regions of each of the first to fourth door trim materials 530D1 to 530D4. For example, one or more acoustic generators 10 can be arranged in the first upper region of each of the first and second door trim materials 530D1, 530D2, and can be arranged in one or more of the second and third upper regions of each of the first and second door trim materials 530D1, 530D2. For example, one or more acoustic generators 10 can be arranged in one or more of the first to third upper regions of at least one or more of the first to fourth door trim materials 530D1 to 530D4. For example, one or more acoustic generators 10 configured to vibrate one or more of the first upper regions of one or more of the first and second door trim materials 530D1, 530D2 can be configured to output sound at 2 kHz to 20 kHz, and one or more acoustic generators 10 configured to vibrate one or more of the second and third upper regions of each of the first and second door trim materials 530D1, 530D2 can be configured to output sound at 2 kHz to 20 kHz or can be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generators 10 configured to vibrate one or more of the second and third upper regions of at least one or more of the first and second door trim materials 530D1, 530D2 can be configured to output sound at 2 kHz to 20 kHz or can be configured to output sound at 150 Hz to 20 kHz.

[0217] According to the embodiments of this specification, one or more acoustic generating devices 10 may be arranged between the seat frame and the seat interior material, and configured to output sound by vibrating the seat interior material indirectly or directly. For example, since one or more acoustic generating devices 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, duplicate descriptions thereof are omitted. For example, one or more acoustic generating devices 10 may be a seat speaker, a headrest speaker, or a fifth speaker, etc., but the embodiments of this specification are not limited thereto.

[0218] According to the embodiments of this specification, the seat frame may include a first seat frame (or driver's seat frame), a second seat frame (or passenger seat frame), a third seat frame (or first co-passenger seat frame), a fourth seat frame (or second co-passenger seat frame), and a fifth seat frame (or third co-passenger seat frame). According to the embodiments of this specification, the seat interior material may include a first seat interior material surrounding the first seat frame, a second seat interior material surrounding the second seat frame, a third seat interior material surrounding the third seat frame, a fourth seat interior material surrounding the fourth seat frame, and a fifth seat interior material surrounding the fifth seat frame.

[0219] According to the embodiments of this specification, at least one or more of the first to fifth seat frames may include a seat bottom frame, a seat rear frame, and a headrest frame. The seat interior material may include a seat bottom interior material surrounding the seat bottom frame, a seat rear interior material surrounding the seat rear frame, and a headrest interior material surrounding the headrest frame. At least one or more of the seat bottom interior material, the seat rear interior material, and the headrest interior material may include a seat inner interior material and a seat outer interior material. The seat inner interior material may include a foam layer. The seat outer interior material may include an epidermal layer including fibers or leather. The seat outer interior material may further include a base layer made of a plastic material that supports the epidermal layer.

[0220] According to the embodiments of this specification, one or more acoustic generators 10 are arranged at least in one of the spaces between the rear seat frame and the rear seat interior material and between the headrest frame and the headrest interior material, so as to vibrate at least one of the exterior seat interior materials of the rear seat interior material and the exterior seat interior materials of the headrest interior material.

[0221] According to the embodiments of this specification, one or more acoustic generators 10 arranged in at least one of the driver's seat DS and the front passenger seat FPS can be arranged at least in one of the spaces between the rear seat frame and the rear seat interior material and between the headrest frame and the headrest interior material.

[0222] According to the embodiments of this specification, one or more acoustic generators 10 arranged in at least one of the first to third passenger seats RPS1, RPS2, and RPS3 can be arranged between the headrest frame and the headrest interior material. For example, at least one of the first to third passenger seats RPS1, RPS2, and RPS3 can include one or more acoustic generators 10 arranged between the headrest frame and the headrest interior material.

[0223] According to the embodiments of this specification, one or more acoustic generators 10 for vibrating at least one of the rear seat interior materials of the driver's seat DS and the front passenger seat FPS can be configured to output sounds from 150 Hz to 20 kHz.

[0224] According to the embodiments of this specification, one or more acoustic generators 10 for vibrating at least one of the headrest interior materials of the driver's seat DS, the front passenger seat FPS, and the first to third passenger seats RPS1, RPS2, and RPS3 can be configured to output sounds from 2 kHz to 20 kHz or can be configured to output sounds from 150 Hz to 20 kHz.

[0225] Referring to FIG. 15, one or more acoustic generating devices 10 may be arranged between the handle frame and the handle interior member 530F and configured to output sound by vibrating the handle interior member 530F either indirectly or directly. For example, since one or more acoustic generating devices 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, redundant description thereof will be omitted. For example, one or more acoustic generating devices 10 may be a handle speaker, a steering speaker, or a sixth speaker, etc., but the embodiments of the present specification are not limited thereto.

[0226] According to the embodiments of this specification, one or more acoustic generators 10 can provide sound to the driver by vibrating the steering wheel interior trim 530F either indirectly or directly. The sound output by one or more acoustic generators 10 provided in the steering wheel interior trim 530F can be the same as or different from the sound output by each of one or more acoustic generators 10 provided between the dash panel and the dashboard 530A, one or more acoustic generators 10 provided between the pillar panel and the pillar interior trim 530B, one or more acoustic generators 10 provided between the roof panel and the roof interior trim 530C, one or more acoustic generators 10 provided between the door frame and the door interior trim 530D, and one or more acoustic generators 10 provided between the seat frame and the seat interior trim. For example, the sound output by one or more acoustic generators 10 can be the same as or different from the sound output by at least one or more of one or more acoustic generators 10 provided between the dash panel and the dashboard 530A, one or more acoustic generators 10 provided between the pillar panel and the pillar interior trim 530B, one or more acoustic generators 10 provided between the roof panel and the roof interior trim 530C, one or more acoustic generators 10 provided between the door frame and the door interior trim 530D, and one or more acoustic generators 10 provided between the seat frame and the seat interior trim. As an embodiment of this specification, one or more acoustic generators 10 provided in the steering wheel interior trim 530F can output sound that is provided only to the driver. As another embodiment of this specification, the sound output by one or more acoustic generators 10 provided in the steering wheel interior trim 530F and the sound output by each of one or more acoustic generators 10 provided between the dash panel and the dashboard 530A, one or more acoustic generators 10 provided between the pillar panel and the pillar interior trim 530B, one or more acoustic generators 10 provided between the roof panel and the roof interior trim 530C, one or more acoustic generators 10 provided between the door frame and the door interior trim 530D, and one or more acoustic generators 10 provided between the seat frame and the seat interior trim can be combined and output together.For example, the sound output by one or more acoustic generators 10 provided in the steering wheel interior material 530F can be combined and output with the sound output by at least one of one or more acoustic generators 10 provided between the dashboard and the dashboard 530A, one or more acoustic generators 10 provided between the pillar panel and the pillar interior material 530B, one or more acoustic generators 10 provided between the roof panel and the roof interior material 530C, one or more acoustic generators 10 provided between the door frame and the door interior material 530D, and one or more acoustic generators 10 provided between the seat frame and the seat interior material.

[0227] According to the embodiments of the present specification, one or more acoustic generators 10 can be arranged between the floor panel and the floor interior material 530G and configured to output sound by vibrating the floor interior material 530G indirectly or directly. One or more acoustic generators 10 can be arranged between the floor panel and the floor interior material 530G arranged between the front seats DS, FPS and the third rear passenger seat RPS3. For example, since one or more acoustic generators 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, duplicate description thereof will be omitted. For example, one or more acoustic generators 10 can be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generators 10 can be a floor speaker, a bottom speaker, an under speaker, or a seventh speaker, etc., but the embodiments of the present specification are not limited thereto.

[0228] The transportation device according to the embodiments of this specification may further include one or more acoustic generating devices 10 disposed on the interior material 530 exposed in the indoor space. For example, the transportation device according to the embodiments of this specification may include only one or more acoustic generating devices 10 disposed on the interior material 530 exposed in the indoor space instead of the one or more acoustic generating devices 10 disposed on the interior material 530, or may include both the one or more acoustic generating devices 10 disposed on the interior material 530 and the one or more acoustic generating devices 10 disposed on the interior material 530 exposed in the indoor space. For example, the one or more acoustic generating devices 10 disposed on the interior material 530 and / or the one or more acoustic generating devices 10 disposed on the interior material 530 exposed in the indoor space may be disposed on the interior material 530 to output sound. For example, the interior material 530 can output sound by the vibration of one or more acoustic generating devices (or vibration devices).

[0229] According to the embodiments of this specification, the interior material 530 may further include a rearview mirror 530H, an overhead console 530I, a rear package interior material 530J, a glove box, and a sun visor, etc.

[0230] One or more acoustic generating devices 10 according to the embodiments of this specification may be disposed on at least one or more of the rearview mirror 530H, the overhead console 530I, the rear package interior material 530J, the glove box, and the sun visor. For example, the one or more acoustic generating devices 10 can output sound of one channel or more.

[0231] One or more acoustic generators 10 may be arranged in the rearview mirror 530H and configured to output sound by vibrating the rearview mirror either indirectly or directly. One or more acoustic generators 10 may be arranged between the mirror housing and the rearview mirror 530H supported by the mirror housing. For example, since one or more acoustic generators 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, duplicate description thereof will be omitted. For example, one or more acoustic generators 10 may be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generators 10 may be a mirror speaker or an eighth speaker, etc., but the embodiments of this specification are not limited thereto.

[0232] According to an embodiment of this specification, one or more acoustic generators 10 may be arranged in the overhead console 530I and configured to output sound by vibrating the console cover of the overhead console 530I either indirectly or directly. According to an embodiment of this specification, the overhead console 530I may include a console box embedded in the roof panel, a lighting mechanism arranged in the console box, and a console cover covering the lighting fixture and the console box.

[0233] One or more acoustic generators 10 are arranged between the console box and the console cover of the overhead console 530I and can vibrate the console cover. For example, one or more acoustic generators 10 are arranged between the console box and the console cover of the overhead console 530I and can directly vibrate the console cover. For example, since at least one or more acoustic generators 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, duplicate description thereof will be omitted. For example, one or more acoustic generators 10 may be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generators 10 may be a console speaker, a lighting speaker, or a ninth speaker, etc., but the embodiments of this specification are not limited thereto.

[0234] The transportation device according to the embodiment of this specification may further include a central lighting box disposed in the central region of the roof interior material 530C, a central lighting mechanism disposed in the central lighting box, and a central lighting cover covering the central lighting fixture. In this case, one or more acoustic generators 10 are further disposed between the central lighting box and the central lighting cover of the central lighting fixture, and can further vibrate the central lighting cover.

[0235] Referring to FIG. 14, one or more acoustic generators 10 may be disposed in the rear package interior material 530J and configured to indirectly or directly vibrate the rear package interior material 530J to output sound. The rear package interior material 530J may be disposed at the rear side of the first to third passenger seats RPS1, RPS2, and RPS3. For example, a part of the rear package interior material 530J may be disposed under the rear glass window 540C.

[0236] One or more acoustic generators 10 are disposed on the back surface of the rear package interior material 530J and can vibrate the rear package interior material 530J. For example, since one or more acoustic generators 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, redundant description thereof will be omitted. For example, one or more acoustic generators 10 may be a rear speaker or a tenth speaker, etc., but the embodiments of this specification are not limited thereto.

[0237] According to the embodiments of the present specification, the rear package interior material 530J can include a first region corresponding to the rear of the first rear passenger seat RPS1, a second region corresponding to the rear of the second rear passenger seat RPS2, and a third region corresponding to the rear of the third rear passenger seat RPS3. According to the embodiments of the present specification, one or more acoustic generators 10 can be arranged so as to vibrate at least one or more of the first to third regions of the rear package interior material 530J. For example, one or more acoustic generators 10 can be arranged in each of the first and second regions of the rear package interior material 530J or in each of the first to third regions. For example, one or more acoustic generators 10 can be arranged in at least one or more of the first and second regions of the rear package interior material 530J or in at least one or more of the first to third regions. For example, one or more acoustic generators 10 can be configured to output an acoustic wave of 20 kHz at 150 Hz. For example, one or more acoustic generators 10 configured to vibrate each of the first to third regions of the rear package interior material 530J can have the same or different acoustic output characteristics from each other. For example, one or more acoustic generators 10 configured to vibrate at least one or more of the first to third regions of the rear package interior material 530J can have the same or different acoustic output characteristics from each other.

[0238] According to the embodiments of the present specification, one or more acoustic generators 10 can be arranged in the glove box and configured to output an acoustic wave by vibrating the glove box indirectly or directly. The glove box can be arranged on the dashboard 530A corresponding to the front of the front passenger seat FPS.

[0239] One or more acoustic generators 10 are arranged on the inner surface of the glove box and can vibrate the glove box. For example, since one or more acoustic generators 10 include the acoustic device 100 described with reference to FIGS. 1 to 13B, duplicate explanations thereof are omitted. For example, one or more acoustic generators 10 are configured to output sounds of 150 Hz to 20 kHz and can be one or more of a woofer, a mid-woofer, and a sub-woofer. For example, one or more acoustic generators 10 can be a glove box speaker or an eleventh speaker, etc., but the embodiments of this specification are not limited thereto.

[0240] According to an embodiment of this specification, one or more acoustic generators 10 can be arranged on the sun visor and configured to vibrate the sun visor indirectly or directly to output sound. The sun visor can include a first sun visor corresponding to the driver's seat DS and a second sun visor corresponding to the front passenger seat FPS.

[0241] One or more acoustic generators 10 are arranged on at least one of the first sun visor 530L1 and the second sun visor 530L2 and can vibrate at least one of the first sun visor 530L1 and the second sun visor 530L2 indirectly or directly. For example, since the twelfth vibration device 550L includes the acoustic device 100 described with reference to FIGS. 1 to 13B, duplicate explanations thereof are omitted. For example, one or more acoustic generators 10 can be configured to output sounds of 150 Hz to 20 kHz. For example, one or more acoustic generators 10 can be a sun visor speaker or a twelfth speaker, etc., but the embodiments of this specification are not limited thereto.

[0242] According to the embodiments of this specification, at least one of the first supervisor and the second supervisor can further include a supervisor mirror. In this case, one or more acoustic generators 10 can be configured to indirectly or directly vibrate at least one of the supervisor mirrors of the first supervisor and the second supervisor. Since the one or more acoustic generators 10 that vibrate the supervisor mirror include the acoustic device 100 described with reference to FIGS. 1 to 13B, redundant description thereof will be omitted.

[0243] Referring to FIG. 14, the transport device according to the embodiments of this specification can further include one or more acoustic generators 10 disposed on the glass window 540. For example, one or more acoustic generators 10 are disposed on the glass window 540 and can output sound. For example, the glass window 540 can output sound by vibrating one or more acoustic generators (or vibration devices). For example, the one or more acoustic generators 10 can be a window speaker, a transparent acoustic generator, a transparent speaker, an opaque speaker, etc., but the embodiments of this specification are not limited thereto.

[0244] One or more acoustic generators 10 according to the embodiments of this specification can be configured to indirectly or directly vibrate the glass window 540 to output sound. For example, one or more acoustic generators 10 include one or more of the acoustic devices 100 described with reference to FIGS. 1 to 13B and can be configured to be transparent, translucent, or opaque.

[0245] According to the embodiments of this specification, the glass window 540 can include a front glass window, a side glass window 540B, and a rear glass window 540C. According to the embodiments of this specification, the glass window 540 can further include a roof glass window. For example, when the transportation device includes a roof glass window, a part of the area of the roof frame and the roof interior material 530C can be replaced by the roof glass window. For example, when the transportation device includes a roof glass window, one or more acoustic generating devices 10 can be configured to output sound by indirectly or directly vibrating the edge of the roof interior material 530C surrounding the roof glass window.

[0246] According to the embodiments of this specification, one or more acoustic generating devices 10 can be arranged on the front glass window and configured to output sound by self-vibration or by indirectly or directly vibrating the front glass window.

[0247] According to the embodiments of this specification, the front glass window can include a first area corresponding to the driver's seat DS, a second area corresponding to the front passenger seat FPS, and a third area (or intermediate area) between the first area and the second area. For example, one or more acoustic generating devices 10 can be arranged in at least one of the first to third areas of the front glass window. For example, one or more acoustic generating devices 10 can be arranged in each of the first and second areas of the front glass window or in each of the first to third areas. For example, one or more acoustic generating devices 10 can be arranged in at least one of the first and second areas of the front glass window or in at least one of the first to third areas. For example, one or more acoustic generating devices 10 arranged in each of the first to third areas of the front glass window can have the same or different acoustic output characteristics from each other. For example, one or more acoustic generating devices 10 arranged in one or more of the first to third areas of the front glass window can have the same or different acoustic output characteristics from each other. For example, one or more acoustic generating devices 10 can be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generating devices 10 can be a front window speaker or a 13th speaker, etc., but the embodiments of this specification are not limited thereto.

[0248] Referring to FIG. 15, one or more acoustic generators 10 according to the embodiments of the present specification are disposed on the side glass window 540B and may be configured to output sound by self-vibration or to vibrate the side glass window 540B indirectly or directly to output sound.

[0249] According to the embodiments of the present specification, the side glass window 540B may include a first side glass window (or left front window), a second side glass window (or right front window) 540B2, a third side glass window (or left rear window), and a fourth side glass window (or right rear window) 540B4.

[0250] According to the embodiments of the present specification, one or more acoustic generators 10 may be disposed on at least one of the first to fourth side glass windows 540B2 and 540B4. For example, at least one of the first to fourth side glass windows 540B2 and 540B4 may include one or more acoustic generators 10.

[0251] According to the embodiments of the present specification, one or more acoustic generators 10 are disposed on at least one of the first to fourth side glass windows 540B2 and 540B4 and may be configured to output sound by self-vibration or to vibrate the side glass windows 540B2 and 540B4 indirectly or directly to output sound. For example, one or more acoustic generators 10 may be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generators 10 disposed on at least one of the first to fourth side glass windows 540B2 and 540B4 may have the same or different acoustic output characteristics from each other. For example, one or more acoustic generators 10 may be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generators 10 may be a side window speaker or a 14th speaker, etc., but the embodiments of the present specification are not limited thereto.

[0252] Referring to FIG. 14, one or more acoustic generating devices 10 according to the embodiments of the present specification are arranged on the rear glass window 540C and can be configured to output sound by self-vibration or to output sound by vibrating the rear glass window 540C indirectly or directly.

[0253] According to the embodiments of the present specification, the rear glass window 540C can include a first region corresponding to the rear of the first rear passenger seat RPS1, a second region corresponding to the rear of the second rear passenger seat RPS2, and a third region corresponding to the rear of the third rear passenger seat RPS3. According to the embodiments of the present specification, one or more acoustic generating devices 10 can be arranged in each of the first to third regions of the rear glass window 540C. For example, one or more acoustic generating devices 10 can be arranged in at least one or more of the first to third regions of the rear glass window 540C. For example, one or more acoustic generating devices 10 can be arranged in each of the first and second regions of the rear glass window 540C or in each of the first to third regions. For example, one or more acoustic generating devices 10 can be arranged in at least one or more of the first and second regions of the rear glass window 540C or in at least one or more of the first to third regions. For example, one or more acoustic generating devices 10 can be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generating devices 10 arranged in each of the first to third regions of the rear glass window 540C can have the same or different acoustic output characteristics from each other. For example, one or more acoustic generating devices 10 arranged in at least one or more of the first to third regions of the rear glass window 540C can have the same or different acoustic output characteristics from each other. For example, one or more acoustic generating devices 10 arranged in at least one or more of the first and second regions of the rear glass window 540C are configured to output sound at 150 Hz to 20 kHz and can be any one or more of a woofer, a mid-woofer, and a sub-woofer. For example, one or more acoustic generating devices 10 can be a rear window speaker or a 15th speaker, etc., but the embodiments of the present specification are not limited thereto.

[0254] According to the embodiments of this specification, one or more acoustic generating devices 10 are arranged on the roof glass window and can be configured to output sound by self-vibration or to vibrate the roof glass window indirectly or directly to output sound.

[0255] The roof glass window according to the embodiments of this specification can be arranged above the front seats DS and FPS. For example, one or more acoustic generating devices 10 can be arranged in the middle region of the roof glass window. For example, one or more acoustic generating devices 10 can be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generating devices 10 can be a roof window speaker or a 16th speaker, etc., but the embodiments of this specification are not limited thereto.

[0256] The roof glass window according to other embodiments of this specification can be arranged above the front seats DS and PS or can be arranged above the front seats DS and PS and the rear seats RPS1, RPS2, and RPS3. For example, the roof glass window can include a first region corresponding to the front seats DS and PS and a second region corresponding to the rear seats RPS1, RPS2, and RPS3. And the roof glass window can include a third region between the first region and the second region. For example, one or more acoustic generating devices 10 can be arranged in at least one or more of the first and second regions of the roof glass window or can be arranged in at least one or more of the first to third regions of the roof glass window. For example, one or more acoustic generating devices 10 can be configured to output sound at 150 Hz to 20 kHz. For example, one or more acoustic generating devices 10 arranged in at least one or more of the first to third regions of the roof glass window can have the same or different acoustic output characteristics from each other.

[0257] Referring to FIGS. 14 and 15, the transport device according to the embodiments of this specification can further include a woofer speaker WS arranged in at least one or more of the dashboard 530A, the door frame, and the rear package interior trim 530J.

[0258] The woofer speaker WS according to the embodiments of this specification can be one or more of a woofer, a mid-woofer, and a sub-woofer. For example, the woofer speaker WS can be a speaker that outputs sound in the range of 60 Hz to 150 Hz, but the embodiments of this specification are not limited thereto.

[0259] Therefore, by outputting sound in the range of 60 Hz to 150 Hz, the woofer speaker WS can improve the bass band characteristics of the sound output to the indoor space.

[0260] According to the embodiments of this specification, the woofer speaker WS can be disposed in at least one of the first and second regions of the dashboard 530A. According to the embodiments of this specification, the woofer speaker WS is disposed in each of the first to fourth door frames of the door trim 530D and can be exposed in the lower regions of the first to fourth door trims 530D1 to 530D4 of the door trim 530D. For example, the woofer speaker WS can be disposed in at least one of the first to fourth door frames of the door trim 530D and can be exposed in the lower regions of at least one of the first to fourth door trims 530D1 to 530D4 of the door trim 530D. According to the embodiments of this specification, the woofer speaker WS can be disposed in at least one of the first and second regions of the rear package trim 530J. For example, one or more sound generating devices 10 disposed in the lower regions of the first to fourth door trims 530D1 to 530D4 can be replaced by the woofer speaker WS. For example, one or more sound generating devices 10 disposed in the lower regions of at least one of the first to fourth door trims 530D1 to 530D4 can be replaced by the woofer speaker WS.

[0261] The transport device according to the embodiments of this specification may further include a garnish member that covers a part of the interior material 530 exposed in the indoor space, and one or more acoustic generators 10 disposed on the interior material 530. For example, the one or more acoustic generators 10 may be disposed on the garnish member and the interior material 530 to output sound. For example, at least one or more of the garnish member and the interior material 530 can output sound by the vibration of one or more acoustic generators (or vibration devices).

[0262] The garnish member may be configured to cover a part of the door interior material 530D exposed in the indoor space, but the embodiments of this specification are not limited thereto. For example, the garnish member may be configured to cover a part of one or more of the dashboard 530A, pillar interior material 530B, and roof interior material 530C exposed in the indoor space.

[0263] The garnish member according to the embodiments of this specification may include a metal material having material characteristics suitable for generating sound by vibration or a non-metal material (or composite non-metal material). For example, the metal material of the garnish member may include any one or more materials of stainless steel, aluminum (Al), aluminum (Al) alloy, magnesium (Mg), magnesium (Mg) alloy, and magnesium lithium (Mg-Li) alloy, but the embodiments of this specification are not limited thereto. The non-metal material (or composite non-metal material) of the garnish member may include one or more of wood, plastic, glass, metal, fabric, fiber, rubber, paper, carbon, and leather, but the embodiments of this specification are not limited thereto. For example, the garnish member may include a metal material having material characteristics suitable for generating sound in the high-frequency band, but the embodiments of this specification are not limited thereto. For example, the high-frequency band may have a frequency of 1 kHz or more or 3 kHz or more, but the embodiments of this specification are not limited thereto.

[0264] One or more acoustic generators 10 can be disposed between the garnish member and the interior member 530. For example, the one or more acoustic generators 10 can be a garnish speaker or a 17th speaker, etc., but the embodiments of this specification are not limited thereto.

[0265] One or more acoustic generators 10 according to the embodiments of this specification can include one or more of the acoustic devices 100 described with reference to FIGS. 1 to 13B. The one or more acoustic generators 10 are disposed on the main interior member or the interior member 530 and the garnish member, and can be connected or coupled to the garnish member.

[0266] One or more acoustic generators 10 according to the embodiments of this specification can be configured to output sound to the interior space of the transport device by vibrating the garnish member indirectly or directly. For example, the one or more acoustic generators 10 can be configured to output sound in the high frequency band, but the embodiments of this specification are not limited thereto.

[0267] Referring to FIGS. 14 and 15, the transport device according to the embodiments of this specification can further include one or more acoustic generators 10 disposed on the inner surface of the exterior member 520. For example, the one or more acoustic generators 10 can be disposed on the exterior member 520 to output sound. For example, the exterior member 520 can output sound by the vibration of one or more acoustic generators (or vibration devices).

[0268] The exterior member 520 according to the embodiments of this specification can include at least one or more of a hood panel 520A, a front fender panel 520B, a door frame, a roof panel, a pillar panel, a trunk panel 520C, a front bumper, a rear bumper, a spoiler, a headlight, a taillight, a fog lamp, and a vehicle body bottom CB. The one or more acoustic generators can vibrate at least one or more of a hood panel 520A, a front fender panel 520B, a door frame, a roof panel, a pillar panel, a trunk panel 520C, a front bumper, a rear bumper, a spoiler, a headlight, a taillight, a fog lamp, and a vehicle body bottom CB on the outer surface or the inner surface.

[0269] One or more acoustic generators 10 can be arranged on one or more of the hood panel 520A, the front fender panel 520B, and the trunk panel 520C. Therefore, acoustic signals of one or more channels can be output.

[0270] One or more acoustic generators 10 according to the embodiments of the present specification can be connected or coupled to the inner surface of the hood panel 520A, and can be configured to vibrate the hood panel 520A indirectly or directly to output acoustic signals to the external space of the transport device. For example, one or more acoustic generators 10 can be configured to be connected or coupled to one or more of the central portion and the edge portion of the inner surface of the hood panel 520A.

[0271] One or more acoustic generators 10 according to the embodiments of the present specification can include one or more of the acoustic devices 100 described with reference to FIGS. 1 to 13B. One or more acoustic generators 10 can be connected or coupled to the inner surface of the hood panel 520A. For example, one or more acoustic generators 10 can be configured to output acoustic signals at 150 Hz to 20 kHz. For example, one or more acoustic generators 10 can be a hood panel speaker or an 18th speaker, etc., but the embodiments of the present specification are not limited thereto.

[0272] One or more acoustic generators 10 according to the embodiments of the present specification can be connected or coupled to the inner surface of the front fender panel 520B, and can be configured to vibrate the front fender panel 520B indirectly or directly to output acoustic signals to the external space of the transport device. For example, one or more acoustic generators 10 can be arranged at regular intervals on the inner surface of the front fender panel 520B.

[0273] One or more acoustic generating devices 10 according to the embodiments of this specification can include one or more of the acoustic devices 100 described with reference to FIGS. 1 to 13B. The one or more acoustic generating devices 10 can be connected or coupled to the inner surface of the front fender panel 520B. For example, the one or more acoustic generating devices 10 can be configured to output sounds at 150 Hz to 20 kHz. For example, the one or more acoustic generating devices 10 can be referred to as fender panel speakers or the 19th speaker, etc., but the embodiments of this specification are not limited thereto.

[0274] One or more acoustic generating devices 10 according to the embodiments of this specification can be connected or coupled to the inner surface of the trunk panel 520C and configured to vibrate the trunk panel 520C indirectly or directly to output sounds to the external space of the transport device. For example, the one or more acoustic generating devices 10 can be configured to be connected or coupled to one or more of the central portion and the edge portion of the inner surface of the trunk panel 520C.

[0275] One or more acoustic generating devices 10 according to the embodiments of this specification can include one or more of the acoustic devices 100 described with reference to FIGS. 1 to 13B. The one or more acoustic generating devices 10 can be connected or coupled to the inner surface of the trunk panel 520C. For example, the one or more acoustic generating devices 10 can be configured to output sounds at 150 Hz to 20 kHz. For example, the one or more acoustic generating devices 10 can be the trunk panel speaker or the 20th speaker, etc., but the embodiments of this specification are not limited thereto.

[0276] According to other embodiments of this specification, the one or more acoustic generating devices 10 can be arranged on one or more of the door inner panel and the door outer panel.

[0277] Referring to FIG. 15, the transport device according to the embodiments of this specification can further include a battery module BM and a vehicle body bottom CB.

[0278] For example, the battery module BM can be arranged in the exterior material 520. For example, the vehicle body bottom CB can cover the battery module BM. The vehicle body bottom CB can be a vehicle body panel, but the embodiments of this specification are not limited thereto.

[0279] Recently, transportation devices that are friendly to noise-free environments such as electric vehicles have a problem that pedestrians cannot recognize them when the transportation device is moving. Therefore, the transportation device is equipped with an AVAS that can recognize danger.

[0280] According to the embodiments of this specification, the transportation device can further include an AVAS (Acoustic Vehicle Alert System). The AVAS can be a device that transmits the position and / or operation information of the transportation device to pedestrians. The AVAS can be a virtual engine sound system or a vehicle approach information device, but the embodiments of this specification are not limited thereto.

[0281] For example, the AVAS can be configured in the engine in front of the transportation device. Therefore, there is a problem that the sound in front of the transportation device cannot output a sound equivalent to that in the rear. And when adjusting the sound in the rear of the transportation device with the acoustic device provided in the front, the sound in the front becomes relatively large, and there is a problem that the sound flows into the room. Therefore, the inventors of this specification have conducted various studies and experiments to adjust the sound in the front and the sound in the rear of the transportation device to equivalent sounds. This will be described below.

[0282] One or more acoustic generators 10 can be arranged between the battery module BM and the vehicle body bottom CB. Referring to FIG. 14, one or more acoustic generators 10 can be arranged at the center of the transportation device. According to other examples, one or more acoustic generators 10 can be arranged on one or more sides of the front, rear, left, and right of the transportation device.

[0283] According to an embodiment of the present specification, one or more acoustic generators 10 disposed between the battery module BM and the vehicle body bottom CB may be an AVAS. Therefore, it is possible to solve the problem that the front sound and the rear sound generated when the AVAS is disposed in the engine of the transport device are different, so that an AVAS having equivalent sound around the transport device can be provided. And since the AVAS can be disposed in a portion shielded from the interior of the transport device, the sound and / or noise flowing into the interior can be minimized or reduced. According to an embodiment of the present specification, since the AVAS can be implemented by the acoustic device 100 having the connecting member 145 described with reference to FIGS. 3 to 5, an AVAS with improved acoustic characteristics in the mid-low frequency band and / or the high frequency band can be provided, and the degree of freedom in arranging the transport device can be improved.

[0284] According to an embodiment of the present specification, a transport device outputs sound to one or more of the interior space and the exterior space through at least one of one or more acoustic generators 10 disposed in the interior material 530, one or more acoustic generators 10 disposed in the interior material 530 exposed in the interior space, one or more acoustic generators 10 disposed in the glass window 540, one or more acoustic generators 10 disposed in the garnish member, and one or more acoustic generators 10 disposed in the exterior material 520. Thus, sound can be output using one or more of the exterior material 520 and the interior material 530 as an acoustic diaphragm, and surround stereo sound including multiple channels can be output.

[0285] The acoustic device according to an embodiment of the present specification and a transport device including the same can be described as follows.

[0286] The acoustic device according to an embodiment of the present specification may include a vibration member, an enclosure provided on the rear surface of the vibration member, a connecting member provided between the vibration member and the enclosure and movably supporting the edge of the vibration member, and a vibration device for vibrating the vibration member.

[0287] According to one or more embodiments of the present specification, the vibrating member can have a planar structure or a non-planar structure.

[0288] According to one or more embodiments of the present specification, the vibrating member can include a protruding portion connected to a connecting member.

[0289] According to one or more embodiments of the present specification, the protruding portion can protrude from the rear surface of the vibrating member. The connecting member can include a groove for accommodating the protruding portion.

[0290] According to one or more embodiments of the present specification, the connecting member can include a first support portion that supports an edge portion of the rear surface of the vibrating member. The first support portion can include an internal space and a hole connected to the internal space. The protruding portion can be accommodated in the first support hole.

[0291] According to one or more embodiments of the present specification, the enclosure can include a bottom portion and side portions connected to the edge ends of the bottom portion and connected to the connecting member.

[0292] According to one or more embodiments of the present specification, the connecting member can include a first connecting portion connected to the vibrating member and a second connecting portion connected to the enclosure. Each of the first connecting portion and the second connecting portion can have elasticity.

[0293] According to one or more embodiments of the present specification, the vibrating member can include a protruding portion connected to the first connecting portion. The enclosure can include a side portion connected to the second connecting portion.

[0294] According to one or more embodiments of the present specification, the first connecting portion can include a first accommodating portion for accommodating the protruding portion. The second connecting portion can include a second accommodating portion for accommodating the side portion.

[0295] According to one or more embodiments of the present specification, the connecting member can be made of a flexible material having elasticity.

[0296] According to one or more embodiments of the present specification, the vibration device can include a vibration element. The vibration element can include a vibrating portion, a first electrode portion provided on the first surface of the vibrating portion, and a second electrode portion provided on a surface different from the first surface of the vibrating portion.

[0297] According to one or more embodiments of the present specification, the vibrating portion can include an inorganic material portion having piezoelectric characteristics.

[0298] According to one or more embodiments of the present specification, the vibrating portion can include a plurality of inorganic material portions having piezoelectric characteristics and an organic material portion provided between the plurality of inorganic material portions.

[0299] According to one or more embodiments of the present specification, the vibration device can include a first cover member provided on the first electrode portion and a second cover member provided on the second electrode portion.

[0300] According to one or more embodiments of the present specification, the vibration device can further include a first adhesive layer provided between the first cover member and the first electrode portion and a second adhesive layer provided between the second cover member and the second electrode portion.

[0301] According to one or more embodiments of the present specification, the vibration device can further include one or more buffer members provided under the vibration device.

[0302] According to one or more embodiments of the present specification, the one or more buffer members can include a first buffer member and a second buffer member provided on the first buffer member. The first buffer member can be made of a material having an elastic coefficient different from that of the second buffer member.

[0303] According to one or more embodiments of the present specification, the second buffer member can include a pattern in a direction perpendicular to the direction in which the vibration member bends.

[0304] According to one or more embodiments of the present specification, the vibrating member may include a metallic material or one or more single non-metallic materials or composite non-metallic materials among wood, rubber, plastic, carbon, glass, fiber, fabric, paper, and leather.

[0305] According to one or more embodiments of the present specification, the vibrating device may further include a signal cable.

[0306] According to one or more embodiments of the present specification, the connecting member may include an opening through which the signal cable passes. The remaining portion of the portion between the vibrating member and the enclosure excluding the opening can be sealed.

[0307] According to one or more embodiments of the present specification, the vibrating member may include one or more of a display panel having pixels for displaying an image, a screen panel on which an image is projected from a display device, a lighting panel, a signage panel, an interior material of a transportation means, a glass window of a transportation means, an exterior material of a transportation means, a ceiling material of a building, an interior material of a building, a glass window of a building, an interior material of an aircraft, a glass window of an aircraft, metal, wood, rubber, plastic, carbon, glass, fiber, fabric, paper, leather, and a mirror.

[0308] The transportation device according to an embodiment of the present specification may include an exterior material, an interior material covering the exterior material, and one or more sound generating devices provided in at least one of the exterior material, the interior material, and between the exterior material and the interior material. The one or more sound generating devices may include the sound device according to any one of claims 1 to 21. One or more of the interior material and the exterior material can output sound by vibration of the one or more sound generating devices.

[0309] According to one or more embodiments of the present specification, one of the interior material and the exterior material may be constituted by an enclosure of the sound device.

[0310] According to one or more embodiments of the present specification, one of the interior material and the exterior material may be constituted by a vibrating member of the sound device.

[0311] According to one or more embodiments of the present specification, the interior material can include at least one or more of a dashboard, a pillar interior material, a roof interior material, a door interior material, a seat interior material, a handle interior material, a floor interior material, and a rear package interior material. The one or more sound generating devices can vibrate at least one or more of a dashboard, a pillar interior material, a roof interior material, a door interior material, a seat interior material, a handle interior material, a floor interior material, and a rear package interior material.

[0312] According to one or more embodiments of the present specification, the exterior material can include at least one or more of a hood panel, a front fender panel, a door frame, a roof panel, a pillar panel, a trunk panel, a front bumper, a rear bumper, a spoiler, a headlight, a taillight, a fog light, and a vehicle body bottom. The one or more sound generating devices can vibrate at least one or more of a hood panel, a front fender panel, a door frame, a roof panel, a pillar panel, a trunk panel, a front bumper, a rear bumper, a spoiler, a headlight, a taillight, a fog light, and a vehicle body bottom on the outer surface or the inner surface.

[0313] According to one or more embodiments of the present specification, it further includes a battery module disposed on the exterior material, and the exterior material can include a vehicle body bottom that covers the battery module. The one or more sound generating devices can be disposed between the battery module and the vehicle body bottom.

[0314] The acoustic device according to the embodiments of this specification is applicable to an acoustic device disposed in a device. The device according to the embodiments of this specification includes a mobile device, a video phone, a smart watch, a watch phone, a wearable apparatus, a foldable apparatus, a rollable apparatus, a bendable apparatus, a flexible apparatus, a curved apparatus, a sliding apparatus, a variable apparatus, an electronic notebook, an e-book, a PMP (portable multimedia player), a PDA (personal digital assistant), an MP3 player, a mobile medical device, a desktop PC, a laptop PC, a netbook computer, a workstation, a navigation device, a vehicle navigation device, a vehicle display device, a vehicle apparatus, a theater apparatus, a theater display device, a television, a wallpaper device, a signage device, a game device, a notebook PC, a monitor, a camera, a camcorder, and a home appliance, etc. And, the acoustic device according to some embodiments of this specification is applicable to an organic light-emitting lighting device or an inorganic light-emitting lighting device. When the acoustic device is applied to the lighting device, the lighting device can serve as both lighting and a speaker. And, when the acoustic device according to some embodiments of this specification is applied to a mobile device or the like, the acoustic device can be one or more of a speaker, a receiver, and a haptic device, but the embodiments of this specification are not limited thereto.

[0315] The present specification described above is not limited to the foregoing embodiments and the accompanying drawings, and it will be apparent to those of ordinary skill in the art to which the present specification pertains that various substitutions, modifications, and changes are possible without departing from the technical idea of the present specification. Therefore, the scope of the present specification is determined by the claims described below, and all forms of changes or modifications derived from the meaning and scope of the claims and their equivalent concepts must be construed as being included within the scope of the present specification.

Description of Reference Numerals

[0316] 100 Acoustic device 110 Vibration member 120 Adhesive member 130 Vibration device 140, 145 Connecting member 150 Enclosure 135, 137 Buffer member

Claims

1. A vibrating member, an enclosure provided on the rear surface of the vibrating member, a connecting member provided between the vibrating member and the enclosure and movably supporting an edge portion of the vibrating member, and a vibration device for vibrating the vibrating member, wherein the vibrating member includes a protruding portion connected to the connecting member, the connecting member includes a first connecting portion supporting an edge portion of the rear surface of the vibrating member, the first connecting portion includes an internal space and a hole communicating with the internal space, and the protruding portion is accommodated in the hole of the first connecting portion. An acoustic device.

2. The acoustic device according to claim 1, wherein the vibrating member has a planar structure or a non-planar structure.

3. The connecting member includes the first connecting portion connected to the vibrating member, and a second connecting portion connected to the enclosure. The acoustic device according to claim 1.

4. The protruding portion protrudes from the rear surface of the vibrating member, and the connecting member includes a groove for accommodating the protruding portion. The acoustic device according to claim 1.

5. The vibrating member includes the protruding portion connected to the first connecting portion, and the enclosure includes a side portion connected to the second connecting portion. The acoustic device according to claim 3.

6. The enclosure includes a bottom portion, and a side portion connected to an edge end of the bottom portion and connected to the connecting member. The acoustic device according to claim 1.

7. The connecting member includes the first connecting portion connected to the vibrating member, and a second connecting portion connected to the enclosure, wherein each of the first connecting portion and the second connecting portion has elasticity. The acoustic device according to claim 1.

8. The vibrating member includes the protruding portion connected to the first connecting portion, and the enclosure includes a side portion connected to the second connecting portion. The acoustic device according to claim 7.

9. The first connecting portion includes a first accommodating portion for accommodating the protruding portion, and the second connecting portion includes a second accommodating portion for accommodating the side portion. The acoustic device according to claim 8.

10. The connecting member is made of a flexible material having elasticity. The acoustic device according to claim 1.

11. The vibration device includes a vibration element, and the vibration element includes a vibrating portion, a first electrode portion provided on a first surface of the vibrating portion, and a second electrode portion provided on a surface different from the first surface of the vibrating portion. The acoustic device according to claim 1.

12. The acoustic device according to claim 11, wherein the vibrating portion includes an inorganic material portion having piezoelectric properties.

13. The vibrating portion includes a plurality of inorganic material portions having piezoelectric properties, and an organic material portion provided between the plurality of inorganic material portions, the acoustic device according to claim 11.

14. The vibrating device includes a first cover member provided in the first electrode portion, and a second cover member provided in the second electrode portion, the acoustic device according to claim 11.

15. The vibrating device further includes a first adhesive layer provided between the first cover member and the first electrode portion, and a second adhesive layer provided between the second cover member and the second electrode portion, the acoustic device according to claim 14.

16. The acoustic device according to claim 1, further including one or more buffer members provided under the vibrating device.

17. The one or more buffer members include a first buffer member and a second buffer member provided on the first buffer member, the first buffer member being made of a material having an elastic coefficient different from that of the second buffer member, the acoustic device according to claim 16.

18. The first connecting portion includes a first accommodation space for accommodating the protruding portion, the second connecting portion includes a second accommodation space for accommodating the side portion, the acoustic device according to claim 5.

19. The vibrating member includes a metal material or one or more single non-metal materials or composite non-metal materials among wood, rubber, plastic, carbon, glass, fiber, fabric, paper, and leather, the acoustic device according to claim 1.

20. The vibrating device further includes a signal cable, the acoustic device according to claim 1.

21. The connecting member includes an opening through which the signal cable passes, and the remaining portion of the portion between the vibrating member and the enclosure excluding the opening is sealed, the acoustic device according to claim 20.

22. The vibrating member includes one or more of a display panel having pixels for displaying an image, a screen panel on which an image is projected from a display device, an illumination panel, a signage panel, an interior material of a transportation means, a glass window of a transportation means, an exterior material of a transportation means, a ceiling material of a building, an interior material of a building, a glass window of a building, an interior material of an aircraft, a glass window of an aircraft, metal, wood, rubber, plastic, carbon, glass, fiber, fabric, paper, leather, and a mirror, the acoustic device according to claim 1.

23. Exterior material, an interior material that covers the exterior material; including the exterior material, the interior material, and one or more acoustic generating devices provided in at least one of the exterior material, the interior material, and between the exterior material and the interior material; the one or more acoustic generating devices include the acoustic device according to any one of claims 1 to 22; a transport device in which one or more of the interior material and the exterior material output sound by vibration of the one or more acoustic generating devices.

24. The transport device according to claim 23, wherein one of the interior material and the exterior material is constituted by an enclosure of the acoustic device.

25. The transport device according to claim 23, wherein one of the interior material and the exterior material is constituted by a vibrating member of the acoustic device.

26. The interior material includes at least one or more of a dashboard, a pillar interior material, a roof interior material, a door interior material, a seat interior material, a handle interior material, a floor interior material, and a rear package interior material; The transport device according to claim 23, wherein the one or more acoustic generating devices vibrate at least one or more of the dashboard, the pillar interior material, the roof interior material, the door interior material, the seat interior material, the handle interior material, the floor interior material, and the rear package interior material.

27. The exterior material includes at least one or more of a hood panel, a front fender panel, a door frame, a roof panel, a pillar panel, a trunk panel, a front bumper, a rear bumper, a spoiler, a headlight, a taillight, a fog light, and a vehicle body bottom; The transport device according to claim 23, wherein the one or more acoustic generating devices vibrate at least one or more of the hood panel, the front fender panel, the door frame, the roof panel, the pillar panel, the trunk panel, the front bumper, the rear bumper, the spoiler, the headlight, the taillight, the fog light, and the vehicle body bottom from the outer surface or the inner surface.

28. further including a battery module disposed on the exterior material; the exterior material includes a vehicle body bottom that covers the battery module; The transport device according to claim 23, wherein the one or more acoustic generating devices are disposed between the battery module and the vehicle body bottom.

Images