To provide an electromagnetic wave shielding device capable of improving the shielding performance of electromagnetic waves emitted from a unit while reducing the effect of secondary radiation of electromagnetic waves.SOLUTION: In an electromagnetic wave shielding device that shields electromagnetic waves emitted from a unit that is a source of electromagnetic waves by a shielding member including a conductive layer, an annular circuit that surrounds the unit via the bottom side of the unit is formed such that the two ends of the conductive layer are electrically connected by at least one current return band that includes a conductive path formed by a linear or band-shaped conductor, and therefore, a stray current generated in the conductive layer is reduced.SELECTED DRAWING: Figure 2

    【課題】電磁波の二次放射による影響を低減しつつユニットから放出される電磁波の遮蔽性能を向上させることができる電磁波遮蔽装置を提供する。【解決手段】導電層を含む遮蔽部材によって電磁波の発生源となるユニットから放射される電磁波を遮断する電磁波遮蔽装置において、線状又は帯状の導電体によって形成された導電経路を含む少なくとも1本の電流帰還帯によって導電層の2つの端部を電気的に接続してユニットの底面側を経由してユニットを取り囲む環状の回路を形成させることにより、導電層に生ずる迷走電流を低減する。【選択図】図2


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    Title :

    ELECTROMAGNETIC WAVE SHIELDING DEVICE


    Additional title:

    電磁波遮蔽装置


    Contributors:

    Publication date :

    2020-06-04


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    H05K PRINTED CIRCUITS , Gedruckte Schaltungen / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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