Sound apparatus
A sound apparatus can include a vibration member; a housing at a rear surface of the vibration member; a connection member disposed between the vibration member and the housing; and a vibration apparatus configured to vibrate the vibration member. The vibration apparatus can include at least one piezoelectric element for producing sound. Also, the connection member can have a first stiffness that is less than a second stiffness of the housing, and the vibration member can be isolated from the housing by the connection member.
1. A sound apparatus, comprising:
a vibration member;
a housing at a rear surface of the vibration member;
a connection member disposed between the vibration member and the housing; and
a vibration apparatus configured to vibrate the vibration member,
wherein the vibration member comprises a first groove portion at a front surface of the vibration member, and
wherein the vibration apparatus overlaps at least a portion of the first groove portion.
2. The sound apparatus of claim 1 , wherein the vibration member has a non-flat structure.
3. The sound apparatus of claim 2 , wherein:
the vibration member comprises a protrusion portion;
the protrusion portion protrudes from the rear surface of the vibration member; and
the protrusion portion and the vibration member are configured as one body.
4. The sound apparatus of claim 2 ,
wherein the first groove portion of the vibration member is thinner than another portion of the vibration member that does not overlap with the vibration apparatus.
5. The sound apparatus of claim 1 , wherein the housing comprises:
a bottom portion;
a lateral portion connected to a periphery of the bottom portion and protruding toward the vibration member; and
a second groove portion at an inner surface of the lateral portion of the housing.
6. The sound apparatus of claim 5 , wherein a periphery portion of the vibration member is fitted into the second groove portion of the housing.
7. The sound apparatus of claim 6 , wherein the connection member comprises:
a first connection member disposed at an upper side of the second groove portion of the housing; and
a second connection member disposed at a lower side of the second groove portion of the housing,
wherein at least a portion of the vibration member is disposed between the first connection member and the second connection member.
8. The sound apparatus of claim 5 , wherein the vibration member comprises a protrusion portion, and
wherein the protrusion portion protrudes from a second surface of the vibration member and is fitted into the second groove portion of the housing.
9. The sound apparatus of claim 5 , wherein:
the first groove portion of the vibration member is being-thinner than another portion of the vibration member that does not overlap with the vibration apparatus; and
a periphery portion of the vibration member is fitted into the second groove portion of the housing.
10. The sound apparatus of claim 1 , further comprising an inner housing disposed inside the housing, the inner housing at least partially surrounding the vibration apparatus,
wherein the inner housing comprises:
a bottom portion;
a lateral portion connected to a periphery of the bottom portion and protruding toward the vibration member; and
a first reinforcement member at a center portion of the bottom portion, the first reinforcement member protruding toward the vibration apparatus for supporting the vibration apparatus.
11. The sound apparatus of claim 10 , wherein:
the inner housing further comprises a second reinforcement member provided at a periphery portion of the first reinforcement member and protruding toward the vibration apparatus from the bottom portion of the inner housing, and
the second reinforcement member has a height lower than a height of the first reinforcement member.
12. The sound apparatus of claim 10 , wherein:
the inner housing further comprises an opening portion passing through a first surface of the bottom portion of the inner housing and a second surface of the inner housing; and
the opening portion in the inner housing comprises at least one of a hole shape and a slit shape.
13. The sound apparatus of claim 10 , further comprising:
an auxiliary vibration member disposed between the inner housing and the vibration member;
a third connection member disposed between the inner housing and the auxiliary vibration member; and
a fourth connection member disposed between the auxiliary vibration member and the vibration member.
14. The sound apparatus of claim 10 , further comprising a sound processing circuit mounted at the bottom portion of the inner housing,
wherein the sound processing circuit is connected to the vibration apparatus through a signal cable.
15. The sound apparatus of claim 1 , wherein:
the vibration apparatus overlaps with the vibration member, between one corner and another corner of the vibration member in a first direction or a second direction; and
a center portion of a horizontal surface of the vibration apparatus overlaps a center portion of a horizontal surface of the vibration member in the first direction or the second direction, or the center portion of the horizontal surface of the vibration apparatus corresponds to the center portion of the horizontal surface of the vibration member in the first direction or the second direction.
16. The sound apparatus of claim 1 , wherein the vibration apparatus comprises a vibration device,
wherein the vibration device comprises:
a vibration portion;
a first electrode portion at a first surface of the vibration portion; and
a second electrode portion at a second surface different from the first surface of the vibration portion.
17. The sound apparatus of claim 16 , wherein the vibration apparatus further comprises:
a first cover member at the first electrode portion; and
a second cover member at the second electrode portion.
18. The sound apparatus of claim 17 , wherein the vibration apparatus further comprises:
a first adhesive layer disposed between the first cover member and the first electrode portion; and
a second adhesive layer disposed between the second cover member and the second electrode portion.
19. The sound apparatus of claim 16 , wherein the vibration portion comprises an inorganic material portion having a piezoelectric characteristic.
20. The sound apparatus of claim 16 , wherein the vibration portion comprises:
a plurality of inorganic material portions having a piezoelectric characteristic; and
an organic material portion disposed between the plurality of inorganic material portions.
21. The sound apparatus of claim 1 , wherein the vibration member comprises a metal material, a single nonmetal material, or a composite including one or more of wood, rubber, plastic, glass, fiber, cloth, paper, a mirror, carbon, and leather.
22. The sound apparatus of claim 1 , wherein the vibration member is mounted on or in at least one of a display panel including a pixel configured to display an image, a light emitting diode lighting panel, an organic light emitting lighting panel, an inorganic light emitting lighting panel, a screen panel on which an image is to be projected from a display apparatus, a lighting panel, a signage panel, a vehicular interior material, a vehicular glass window, a vehicular exterior material, a building ceiling material, a building interior material, a building glass window, an aircraft interior material, an aircraft glass window, metal, wood, rubber, plastic, glass, fiber, cloth, paper, leather, carbon, and a mirror.
23. A sound apparatus, comprising:
a vibration member;
a vibration apparatus configured to vibrate the vibration member, the vibration apparatus including at least one piezoelectric element for producing sound;
a housing disposed at a rear surface of the vibration member; and
a connection member disposed between the vibration member and the housing,
wherein the connection member has a first stiffness that is less than a second stiffness of the housing,
wherein the vibration member is isolated from the housing by the connection member,
wherein the vibration member comprises a first groove portion at a front surface of the vibration member, and
wherein the vibration apparatus overlaps at least a portion of the first groove portion.
24. The sound apparatus of claim 23 ,
wherein the first groove portion is being-configured to reduce a stiffness of the vibration member for adjusting a sound frequency response of the sound apparatus, and
wherein a thickness of the first groove portion of the vibration member is thinner than a thickness of another portion of vibration member that does not overlap with the vibration apparatus.
25. The sound apparatus of claim 23 , further comprising:
a first reinforcement member disposed at a rear surface of the vibration apparatus for supporting the vibration apparatus and for adjusting a sound frequency response of the sound apparatus.
26. The sound apparatus of claim 23 , wherein the first reinforcement member directly contacts the rear surface of the vibration apparatus.