To provide a baggage rack capable of selectively absorbing sound in a desired frequency band while evading change to internal configuration of a railroad vehicle and the railroad vehicle with application of the baggage rack.SOLUTION: A hollow unit F extending in the longitudinal direction of a main body 12 is communicated with outside by an air-column resonance hole unit H in a baggage rack 11. Due to this structure, sound absorption effect is obtained by viscosity resistance of air around opening end of the air-column resonance hole unit H in the resonance frequency determined by the length of the hollow unit F from a position of the air-column resonance hole unit H by occurrence of stationary waves inside the hollow unit F. Therefore, sound in the desired frequency band is capable of being selectively absorbed by changing the length of the main body 12 and the position of the air-column resonance hole unit H in the baggage rack 11. In addition, influence to internal configuration of a railroad vehicle 1 is suppressed since this sound absorption effect is obtained by the hollow unit F and the air-column resonance hole unit H in the baggage rack 11.SELECTED DRAWING: Figure 2

    【課題】鉄道車両の内部構成の変更を回避しつつ、所望の周波数帯域の音を選択的に吸音できる荷物棚、及びかかる荷物棚を適用した鉄道車両を提供する。【解決手段】荷物棚11では、本体部12の長手方向に延在する中空部Fが気柱共鳴孔部Hによって外部に連通している。かかる構成により、中空部F内で定在波が発生し、気柱共鳴孔部Hの位置からの中空部Fの長さで定まる共鳴周波数において、気柱共鳴孔部Hの開口端周りの空気の粘性抵抗によって吸音効果が奏される。したがって、荷物棚11では、本体部12の長さ及び気柱共鳴孔部Hの位置を変えることで、所望の周波数帯域の音を選択的に吸音できる。また、この吸音効果は、荷物棚11における中空部F及び気柱共鳴孔部Hの形成によって実現されるので、鉄道車両1の内部構成に対する影響も抑えられる。【選択図】図2


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    Titel :

    BAGGAGE RACK AND RAILROAD VEHICLE


    Weitere Titelangaben:

    荷物棚及び鉄道車両


    Beteiligte:
    TANIGUCHI KOJI (Autor:in)

    Erscheinungsdatum :

    2019-04-04


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B61D Einzelheiten oder Arten des Wagenaufbaus von Eisenbahnfahrzeugen , BODY DETAILS OR KINDS OF RAILWAY VEHICLES / G10K Tonerzeugungsvorrichtungen , SOUND-PRODUCING DEVICES



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