PROBLEM TO BE SOLVED: To provide a vehicle power source noise reduction device which is capable of sufficiently reducing noise in a wide range outside a vehicle.SOLUTION: An engine noise reduction device 100 comprises a plurality of speakers 30 which are disposed near an outer surface 10b of an engine 10 to drive a vehicle 1 and include a vibrating plate 34 which generates a canceling sound of opposite phase to the noise emitted from the engine 10 to reduce the noise. The plurality of speakers 30 are respectively disposed in such a manner that they emit canceling sound in the direction along an emitting direction of the noise emitted from the engine 10.SELECTED DRAWING: Figure 2
【課題】車外の広範な領域において、騒音の低減を十分に行うことが可能な車両動力源騒音低減装置を提供する。【解決手段】このエンジン騒音低減装置100は、車両1を駆動させるためのエンジン10の外表面10b近傍に配置され、エンジン10から放射される騒音を低減する、騒音とは逆位相のキャンセル音を発生させる振動板34を含む複数のスピーカ30を備える。複数のスピーカ30は、各々、エンジン10から放射される騒音の放射方向に沿った方向にキャンセル音を放射するように配置されている。【選択図】図2
VEHICLE POWER SOURCE NOISE REDUCTION DEVICE
車両動力源騒音低減装置
2018-11-15
Patent
Electronic Resource
Japanese
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