Evaluation mechanism of the indoor lighting environment caused by lighting color and interior color

2023 Fiscal Year Final Research Report

• Project/Area Number: 21K04368
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Review Section: Basic Section 23020:Architectural environment and building equipment-related
• Research Institution: Chiba University
• Principal Investigator: Munakata Jun 千葉大学, 大学院工学研究院, 教授 (80323517)
• Project Period (FY): 2021-04-01 – 2024-03-31
• Keywords: 照明光色 / 内装色 / 室内印象 / 心理評価

Outline of Final Research Achievements

We conducted several experiments to examine the subjective impression of an interior space depending on the combination of lighting color and interior color. Generally, it is said that warm lighting color and warm interior color are suitable for a relaxing space, and conversely, bluish lighting color and cool interior color are suitable for an office space. Therefore, it was expected that the evaluation of the desirability of the combination of lighting color and interior color would differ depending on whether they were the same or different systems. However, it was shown that this does not necessarily apply depending on the room use and the tone of the interior color. In addition, we found that it is possible to manipulate the room impression by irradiating the room with white light and chromatic light separately, rather than simply irradiating only one light color with the light source color.

Free Research Field

建築環境心理学

Academic Significance and Societal Importance of the Research Achievements

室内空間設計において室用途に即した照明光色や内装色の在り方はそれぞれ独立して説明されることが一般的であった。本研究は，一般的な室内空間で用いられる照明光色と，様々なトーンの内装色ヲを組み合わせた心理印象評価実験により，これら二つの要素が組み合わさることによる総合的な印象を検証したことが有用な学術的意義と位置付けられる。またこれらの成果は更に精査することにより，照明と内装を一体として設計するための指針につながる可能性が高いことが社会的意義といえる。