Vibration device and sound insulation device
A vibration device includes: a glass vibration plate including a plurality of glass plates being laminated, and a solid-phase intermediate layer between at least a pair of the glass plates among the glass plates; a vibrator fixed to the glass vibration plate and configured to vibrate the glass vibration plate, in which the glass vibration plate includes a temperature adjustment unit configured to adjust a temperature of the intermediate layer.
1 . A vibration device comprising:
a glass vibration plate comprising a plurality of glass plates being laminated, and a solid-phase polymer resin intermediate layer between at least a pair of the glass plates among the glass plates;
a vibrator fixed to the glass vibration plate and configured to vibrate the glass vibration plate, wherein
the glass vibration plate comprises a temperature adjustment unit configured to adjust a temperature of the solid-phase polymer resin intermediate layer.
2 . The vibration device according to claim 1 , wherein the temperature adjustment unit performs heating, cooling, and heat-retention of the solid-phase polymer resin intermediate layer based on a temperature of the glass vibration plate, a surrounding member, or an environmental atmosphere.
3 . The vibration device according to claim 1 , wherein the temperature adjustment unit is provided in a region of a plate surface of the glass vibration plate, the region comprising at least a fixed position of the vibrator.
4 . The vibration device according to claim 1 , wherein the temperature adjustment unit comprises a heating body configured to heat the solid-phase polymer resin intermediate layer.
5 . The vibration device according to claim 4 , wherein the heating body is a heat ray heater or a planar heater having a planar heating surface.
6 . The vibration device according to claim 4 , wherein the temperature adjustment unit is disposed on both surfaces of the glass vibration plate.
7 . The vibration device according to claim 1 , wherein the temperature adjustment unit has a heat retention function for the solid-phase polymer resin intermediate layer.
8 . The vibration device according to claim 7 , wherein the temperature adjustment unit comprises a heat insulating layer covering at least a part of the solid-phase polymer resin intermediate layer.
9 . The vibration device according to claim 8 , wherein the heat insulating layer is a heat ray reflective layer.
10 . The vibration device according to claim 9 , wherein the heat ray reflective layer is provided on a surface of one of the pair of glass plates on a side of the solid-phase polymer resin intermediate layer.
11 . The vibration device according to claim 8 , wherein one of the pair of glass plates is thinner than the other.
12 . The vibration device according to claim 1 , wherein the solid-phase polymer resin intermediate layer is made of a resin material comprising any one of polyvinyl butyral, an ethylene vinyl acetate copolymer resin, polyurethane, polyethylene terephthalate, and polycarbonate.
13 . The vibration device according to claim 12 , wherein the temperature adjustment unit is configured to adjust a temperature of the solid-phase polymer resin intermediate layer to a temperature equal to or higher than a glass transition temperature of the resin material and equal to or lower than 50° C.
14 . The vibration device according to claim 1 , wherein the glass vibration plate is at least one of a side window, a rear window, a front window, and a roof glazing of an automobile.
15 . The vibration device according to claim 1 , wherein the glass vibration plate has a loss coefficient at 25° C. of 1×10 −3 or more, and has a longitudinal wave sound velocity value in a plate thickness direction at 25° C. of 4.0×10 3 m/s or more.
16 . The vibration device according to claim 1 , wherein at least a part of the enclosure member is fixed to the glass vibration plate.
17 . The vibration device according to claim 16 , wherein the glass vibration plate comprises a shielding layer configured to shield visible light, and
the shielding layer overlaps the vibrator and the enclosure member in a plan view of the glass vibration plate.
18 . A sound insulation device comprising:
the vibration device according to claim 1 , the vibration device being disposed at a boundary between an interior space and an exterior;
an exterior sound detection unit configured to detect a sound from a noise source or a vibration source that is correlated with a sound wave vibration induced in the glass vibration plate, and output a reference signal according to a detection result;
an interior sound detection unit configured to detect a sound in the interior space and output an error signal according to a detection result; and
a control unit configured to cause the vibrator to output a cancellation signal having a phase opposite to a phase of the reference signal.
19 . The sound insulation device according to claim 18 , wherein the enclosure member is a window frame member configured to support the glass vibration plate in a freely retractable manner.
20 . The sound insulation device according to claim 18 , wherein the glass vibration plate is at least one of a side window, a rear window, a front window, and a roof glazing of an automobile.
21 . The vibration device according to claim 1 , wherein:
the vibration device comprises a plurality of vibrators; and
a plurality of temperature adjustment units, each corresponding to its respective vibrator.