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Sound producing device

A technology of sound-emitting device and sound-emitting element, which is applied to sensors, electrical components, sensor parts, etc., can solve the problems in the field of sound-emitting of carbon nanotubes that have not yet been discovered, and achieve the effects of good sound-emitting effect, large specific surface area and simple structure.

Active Publication Date: 2009-12-09
TSINGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, carbon nanotubes have not been found to be used in the field of sound generation in the prior art

Method used

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Embodiment Construction

[0013] The sound generating device of the embodiment of the technical solution will be described in detail below with reference to the accompanying drawings.

[0014] see figure 2 The first embodiment of the technical solution provides a sound generating device 10 , which includes a signal input device 12 , a sound generating element 14 , a first electrode 142 and a second electrode 144 . The first electrode 142 and the second electrode 144 are spaced apart and electrically connected to the sound emitting element 14 . The first electrode 142 and the second electrode 144 can support the sound emitting element 14 . In addition, the first electrode 142 and the second electrode 144 are respectively electrically connected to both ends of the signal input device 12 through external wires 149, and are used to input the signal in the signal input device 12 to the sound emitting element 14. middle.

[0015] The sound emitting element 14 includes at least one layer of carbon nanotub...

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Abstract

The invention relates to a sound producing device comprising a signal input device and a sound producing component, wherein the sound producing component is electrically connected with both ends of the signal input device, the sound producing component comprises at least one carbon nano tube film which comprises a plurality of mutually parallel carbon nano tubes, the signal input device inputs anelectric signal to the sound producing component, and therefore, surrounding gas media are heated by the sound producing component to generate sound waves. The sound producing device can be used for soundable devices, such as earphones, sound boxes, radios, and the like.

Description

technical field [0001] The invention relates to a sounding device, in particular to a sounding device based on carbon nanotubes. Background technique [0002] The sounding device generally consists of a signal input device and a sounding element. The electrical signal is input to the sound generating element through the signal input device, and then the sound is emitted. The sound emitting element in the prior art is generally a loudspeaker. The loudspeaker is an electro-acoustic device that converts electrical signals into sound signals. Specifically, the speaker can convert audio electric power signals within a certain range into audible sounds with less distortion and sufficient sound pressure level. [0003] There are many kinds of existing loudspeakers, which can be divided into electrodynamic loudspeakers, electromagnetic loudspeakers, electrostatic loudspeakers and piezoelectric loudspeakers according to their working principles. Although they work in different wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R23/00
Inventor 姜开利肖林陈卓范守善
Owner TSINGHUA UNIV
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