事務所において在室者に必要な顔面照度に関する研究

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  • 田渕 義彦
    松下電工 (株) 中央エンジニアリングセンター
  • 中村 肇
    松下電工 (株) 中央エンジニアリングセンター
  • 松島 公嗣
    松下電工 (株) 中央エンジニアリングセンター

書誌事項

タイトル別名
  • Experimental study on the necessary illuminance of human faces in an office room
  • ジムショ ニ オイテ ザイシツシャ ニ ヒツヨウ ナ ガンメン ショウド ニ

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説明

It is important to satisfy the visibility needs of visual tasks on a working place (such as a desk top) as well as to make comfortable office lighting.<BR>Visual tasks may include desk top work, VDT work or even talking to another person, in which case, the face of the person becomes a visual task surface.<BR>A series of experimental studies, with subjective appraisals, were carried out to clarify a preferable face illuminance against background wall illuminance in an office room, especially while using task and ambient lighting (general lighting with a local lighting on a desk top).<BR>In this experiment, background wall illuminance against an illuminance on the desk, is set at a lower limit value for nearly 90 percent of observers, and the face illuminance is adjusted by the obsever.<BR>The experiments' results are as follows:<BR>(1) Preferable face luminance against the background wall luminance can not be expressed simply.<BR>(2) For a plan of task and ambient lighting in the office, it is desirable to have a preferable range of face illuminance for illuminance on the desk top on condition that wall illuminance is fixed.<BR>As a guideline for typical lighting design in the office, an optimum illuminance range for the face should be 450-6201x; for an illuminance of the desks: 7501x, and minimum illuminance range for walls should be 270-3001x; for an illuminance on the desk: 1000 lx, on condition that preferable range of illuminance on the desk top should be 750-1000 lx and wall reflectance is 0.3-0.8.

収録刊行物

  • 照明学会誌

    照明学会誌 76 (6), 277-280, 1992

    一般社団法人 照明学会

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