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US 12,738,868 B2Granted
Power generation device
AssigneeDENSO TEN Limited
InventorHiroyuki Watabe
Life of this patent
Estimating the term…
Abstract
A power generation device includes a coil, a magnet, and a diaphragm. The magnet is provided at a position distant from the coil, having magnet pole faces facing a direction of the coil. The diaphragm vibrates upon receiving a sound wave, having either the coil or the magnet being placed. The diaphragm generates power by generating an electromotive force in the coil by a change in a magnetic field of the coil caused by changing a relative position of the coil and the magnet by vibration.
Claims11
A power generation device comprising:
- a coil;
- a magnet that is provided at a position distant from the coil and has magnet pole faces facing a direction of the coil;
- and
- a diaphragm that vibrates upon receiving a sound wave and has either the coil or the magnet placed thereon, wherein;
- the diaphragm comprises a first diaphragm and a second diaphragm, disposed facing each other;
- either one of the coil and the magnet is disposed on the first diaphragm and the second diaphragm, and
- the other one of the coil and the magnet is disposed be ween the first diaphragm and the second diaphragm.
4 more elements
Dependencies are inferred from the claim text.