US-12627914-B2 - Sound apparatus and vehicular apparatus comprising the same

Abstract

A sound apparatus comprises a vibration member, an enclosure at a rear surface of the vibration member, a connection member between the vibration member and the enclosure, movably supporting an edge of the vibration member, and a vibration apparatus vibrating the vibration member.

Inventors

• Seonwook Lee
• Seungo JEON
• Daeho Kim
• Daewon Kim
• SeungWoo BAEK
• Dohyeong Kim

Assignees

• LG DISPLAY CO., LTD.

Dates

Publication Date

20260512

Application Date

20231128

Priority Date

20221201

Claims (20)

1. 1 . A sound apparatus comprising: a vibration member; an enclosure at a rear surface of the vibration member; a connection member between the vibration member and the enclosure, the connection member movably supports an edge of the vibration member; and a vibration apparatus configured to vibrate the vibration member, wherein the vibration member includes a protrusion portion that is connected to the connection member, wherein the connection member includes a first supporting portion that supports a rear edge of the vibration member, the first supporting portion including an inner space and a hole connected to the inner space, and wherein the protrusion portion is accommodated in the hole of the first supporting portion.
2. 2 . The sound apparatus of claim 1 , wherein the vibration member has a planar structure or non-planar structure.
3. 3 . The sound apparatus of claim 1 , wherein the protrusion portion protrudes from the rear surface of the vibration member, and the connection member includes a groove that accommodates the protrusion portion.
4. 4 . The sound apparatus of claim 1 , wherein the enclosure includes: a bottom portion; and a side portion that is connected to an edge of the bottom portion and is connected to the connection member.
5. 5 . The sound apparatus of claim 1 , wherein the connection member includes: a first connection portion that is connected to the vibration member; and a second connection portion that is connected to the enclosure, wherein each of the first connection portion and the second connection portion has elasticity.
6. 6 . The sound apparatus of claim 5 , wherein the vibration member includes a protrusion portion that is connected to the first connection portion, and the enclosure includes a side portion that is connected to the second connection portion.
7. 7 . The sound apparatus of claim 6 , wherein the first connection portion includes: a first accommodation portion that accommodates the protrusion portion; and a second accommodation portion that accommodates the side portion.
8. 8 . The sound apparatus of claim 1 , wherein the connection member is made of a flexible material having elasticity.
9. 9 . The sound apparatus of claim 1 , wherein the vibration apparatus includes a vibration device, the vibration device including: a vibration portion; a first electrode portion at a first surface of the vibration portion; and a second electrode portion at a surface different from the first surface of the vibration portion.
10. 10 . The sound apparatus of claim 9 , wherein the vibration portion includes an inorganic material portion having piezoelectric characteristics.
11. 11 . The sound apparatus of claim 9 , wherein the vibration portion includes: a plurality of inorganic material portions having piezoelectric characteristics; and an organic material portion between the plurality of inorganic material portions.
12. 12 . The sound apparatus of claim 9 , wherein the vibration apparatus includes: a first cover member at the first electrode portion; and a second cover member at the second electrode portion.
13. 13 . The sound apparatus of claim 12 , wherein the vibration apparatus includes: a first adhesive layer between the first cover member and the first electrode portion; and a second adhesive layer between the second cover member and the second electrode portion.
14. 14 . The sound apparatus of claim 1 , further comprising: one or more buffer members below the vibration apparatus.
15. 15 . The sound apparatus of claim 14 , wherein the one or more buffer members include a first buffer member and a second buffer member on the first buffer member, and the first buffer member is made of a material having an elastic modulus that is different from an elastic modulus of a material of the second buffer member.
16. 16 . The sound apparatus of claim 15 , wherein the second buffer member includes a pattern in a direction perpendicular to a bending direction of the vibration member.
17. 17 . The sound apparatus of claim 1 , wherein the vibration member includes a metal material, or includes a single non-metallic or composite non-metallic material including at least one of wood, rubber, plastic, carbon, glass, fiber, cloth, paper or leather.
18. 18 . The sound apparatus of claim 1 , wherein the vibration apparatus further includes a signal cable.
19. 19 . The sound apparatus of claim 18 , wherein the connection member includes an opening through which the signal cable passes, and a remaining portion of a portion between the vibration member and the enclosure except for the opening is sealed.
20. 20 . The sound apparatus of claim 1 , wherein the vibration member includes one or more of a display panel having a pixel configured to display an image, a screen panel configured to project an image from a display device, a lighting panel, a signage panel, an interior material of a transportation means, a glass window of the transportation means, an exterior material of the transportation means, a ceiling material of a building, an interior material of the building, a glass window of the building, an interior material of an aircraft, a glass window of the aircraft, metal, wood, rubber, plastic, carbon, glass, fiber, fabric, paper, leather or mirror.

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims the benefit of Republic of Korea Patent Application No. 10-2022-0165763 filed on Dec. 1, 2022, which is hereby incorporated by reference in its entirety. BACKGROUND Technical Field The present disclosure relates to a sound apparatus and a vehicular apparatus comprising the same. Description of the Related Art An apparatus includes a separate speaker or a sound apparatus to provide sound. When a speaker is disposed in the apparatus, a problem occurs in that there is a restriction in design and space arrangement of the apparatus due to a space occupied by the speaker. The speaker applied to the apparatus may be, for example, an actuator that includes a magnet and a coil. When the actuator is applied to the apparatus, a problem occurs in that the apparatus is thick. In this respect, a piezoelectric device that can implement a thin thickness has received attention. The piezoelectric device has brittleness characteristics and thus has a problem in that it is easily damaged by external shock, whereby reliability in sound reproduction is low. In addition, when a speaker such as a piezoelectric device is applied to a flexible apparatus, a problem occurs in that the piezoelectric device is damaged due to brittleness characteristics. SUMMARY Therefore, the inventors of the present disclosure have recognized the aforementioned problems and carried out various studies and experiments for implementing a sound apparatus that may improve sound quality and sound pressure characteristics. The inventors of the present disclosure have invented a new sound apparatus, which can improve sound quality and sound pressure characteristics through various studies and experiments, and a vehicular apparatus comprising the same. An aspect of the present disclosure is directed to providing a sound apparatus, which can generate vibration or sound by vibrating a vibration member and improving sound characteristics and/or sound pressure characteristics, and a vehicular apparatus comprising the same. The objects of the present disclosure are not limited to the aforesaid, but other objects not described herein will be clearly understood by those skilled in the art from descriptions below. A sound apparatus according to an embodiment of the present disclosure may include a vibration member, an enclosure at a rear surface of the vibration member, a connection member between the vibration member and the enclosure, and a vibration apparatus vibrating the vibration member. The connection member may movably support an edge of the vibration member. A vehicular apparatus according to an embodiment of the present disclosure may include an exterior material, an interior material covering the exterior material, and one or more sound generating apparatuses in the exterior material, in the interior material and/or between the exterior material and the interior material. The one or more sound generating apparatuses may include a vibration member, an enclosure at a rear surface of the vibration member, a connection member between the vibration member and the enclosure, and a vibration apparatus vibrating the vibration member. The connection member may movably support an edge of the vibration member. One or more of the interior material and the exterior material may output sound in accordance with vibration of the one or more sound generating apparatuses. Details according to various embodiments of the present disclosure in addition to the above objects are included in the detailed description and drawings. A sound apparatus according to an embodiment of the present disclosure may be configured to vibrate a vibration member or a display panel, and thus, may generate a sound so that the sound travels in a forward direction of the vibration member or the display panel. A sound apparatus according to an embodiment of the present disclosure, may provide uniform sound characteristics and/or sound pressure characteristics to the front, rear, and sides thereof. A sound apparatus according to an embodiment of the present disclosure, may include a connection member between the vibration member and the enclosure, and thus a peak and/or dip phenomenon at a frequency in the middle/low-pitched range and/or the high-pitched range may be minimized or prevented. A sound apparatus according to an embodiment of the present disclosure, may include a buffer member, thus the vibration device may be protected from external impact, and cracks or the like which may occur during the transportation process or the attachment process of the vibration device may be reduced. The details of the present disclosure described in technical problem, technical solution, and advantageous effects do not specify essential features of claims, and thus, the scope of claims is not limited by the details described in detailed description. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further u