Creation of a smart light environment considering the developmental stage of children: Taking evening childcare in a children's facility as an example

2021 Fiscal Year Final Research Report

• Project/Area Number: 19K14173
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 09030:Childhood and nursery/pre-school education-related
• Research Institution: The University of Tokyo (2020-2021); Ochanomizu University (2019)
• Principal Investigator: KOZAKI MIKI 東京大学, 大学院新領域創成科学研究科, 准教授 (50754420)
• Project Period (FY): 2019-04-01 – 2022-03-31
• Keywords: 照明環境 / 光環境 / 子どもの施設 / サーカディアンリズム

Outline of Final Research Achievements

This research proceeded based on the hypothesis that the required light environment may differ depending on the developmental stage of the child, and it is necessary to consider it especially after the evening, in the time zone that depends on artificial lighting instead of daylight lighting. In carrying out the research, a light environment survey at the children's facilities that are actually in operation was conducted, and confirmed that they fully meet the standards as an educational facility. However, there was a possibility of using "darkness" more effectively. In addition, a questionnaire to parents was conducted to examine the relationship between the light environment at home and the morning-night type. Appropriate light exposure during the day and sleeping with siblings were revealed as characteristics of the morning type.

Free Research Field

建築光環境・視環境

Academic Significance and Societal Importance of the Research Achievements

臨床分野や生理学的分野においては、サーカディアンリズム（生体リズム）と光環境との関係性は明らかになっているが、実生活での活動がどの程度影響しうるのか、生活リズムの違いがどの程度の違いを生むのかなど建築光環境において検討されている事例は少ない。演繹的手法ではあるが、本研究の結果において、実際の生活の場の光環境と朝型夜型度との関連が見られたことは、実践的な意義が大きい。研究成果を踏まえて生活の場を整えることによるリズムの調整が可能であることも示唆され、改善提案をしていくことや社会的発信をしていくことで今後も貢献していくことが可能であると考える。