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Visual Environment Provided by Windows in Offiice Spaces: Establishment of a Unified Evaluation Method using a New Metrics for View Quality

Research Project

Project/Area Number 23K22924
Project/Area Number (Other) 22H01654 (2022-2023)
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeMulti-year Fund (2024)
Single-year Grants (2022-2023)
Section一般
Review Section Basic Section 23020:Architectural environment and building equipment-related
Research InstitutionTokyo University of Science

Principal Investigator

Yoshizawa Nozomu  東京理科大学, 創域理工学部建築学科, 教授 (40349832)

Co-Investigator(Kenkyū-buntansha) 宗方 淳  千葉大学, 大学院工学研究院, 教授 (80323517)
三木 保弘  国立研究開発法人建築研究所, 環境研究グループ, グループ長 (90356014)
加藤 未佳  日本大学, 生産工学部, 教授 (00409054)
山口 秀樹  国土技術政策総合研究所, 建築研究部, 室長 (60411229)
Project Period (FY) 2024-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2024: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2023: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥8,320,000 (Direct Cost: ¥6,400,000、Indirect Cost: ¥1,920,000)
Keywords眺望性 / 採光性 / 可視容積 / 視環境評価構造 / 窓 / 開口部 / 眺望 / 採光 / 昼光照明 / 側窓 / 天窓 / 眺望性評価指標 / 環境基準 / 照明シミュレーション / 視環境 / 窓のもたらす光環境 / 開放感 / 昼光照明シミュレーション
Outline of Research at the Start

窓の機能を向上させることはSDGsやZEB普及を推進していく上で重要であり、視環境的側面からは眺望・採光双方の性能に留意する必要がある。従来は昼光照度や昼光率といった採光量指標によって窓の形態等を規定してきたが、現在の採光量指標は担保できる視環境が不明瞭であり、採光量指標のみに頼った窓設計では、本来窓に要求される性能がむしろ阻害される懸念がある。そこで本研究では、1)眺望・採光の関係性を改めて整理して窓がもたらす視環境の評価構造を解明し、2)眺望性能の定量的評価方法を明らかにし、最後に3)窓の視環境的側面を一元的に評価可能な実用的かつ簡易な眺望性能指標の導出とその目標値の提案を行なった。

Outline of Final Research Achievements

TThe following results were obtained for the three objectives of this research: 1) Regarding the evaluation structure of the visual environment provided by windows, it was clarified through covariance structure analysis using data obtained from questionnaire surveys for both office buildings and residential buildings that the importance of views is the first and foremost factor for evaluating the visual environment in the spaces with windows, 2) it was clarified through simulated office experiments that the volume of sight has the highest explanatory power as a view index that can quantitatively evaluate views, 3) with regard to establishing a practical and easily calculated view index and deriving a threshold value for obtaining a desirable visual environment, a threshold value for the volume of sight (the total volume of sight of 10^6.5 brings a dissatisfaction rate of 25%) was derived based on the results of measurements and questionnaire surveys at 10 actual offices.

Academic Significance and Societal Importance of the Research Achievements

眺望性に関する定量的評価指標を確立することにより、2026年中に発刊予定の日本建築学会AIJES-L0001室内光環境・視環境に関する窓・開口部の設計・維持管理規準・同解説の改訂版に、本研究の成果を反映させる予定となっている。現在採光・眺望に関するガイドラインとしてはLEED・Well認証・欧州規格などがあるが、これによりそれらより一歩進んだ新たな国内向け規準を策定し、さらにISO/CIEなどにおける国際基準への反映と繋げることができよう。なお総合可視容積を実務において簡易に計算可能とするためのGrasshopperのプラグイン(Pythonプログラム)を作成・提供予定である。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Annual Research Report
  • 2022 Annual Research Report
  • Research Products

    (26 results)

All 2025 2024 2023 2022

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 2 results) Presentation (19 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] AN INTEGRATED ASSESSMENT METHOD FOR VIEWS, DAYLIGHTING, AND GLARE IN OFFICE BUILDINGS WITH WINDOWS2025

    • Author(s)
      Kashiwaguma R., Budoh Y., Ito D., Yamaguchi H., Kato M., Miki Y., Munakata J, Yoshizawa N
    • Journal Title

      Proceedings of CIE conference 2025

      Volume: -

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] EVALUATION STRUCTURE OF VISUAL ENVIRONMENT IN RESIDENTIAL SPACES WITH WINDOWS2024

    • Author(s)
      荒野華織, 松田啓汰, 樺木隆則, 大江由起, 加藤未佳, 佐野奈緒子, 宗方淳, 吉澤望
    • Journal Title

      Journal of Environmental Engineering (Transactions of AIJ)

      Volume: 89 Issue: 818 Pages: 193-201

    • DOI

      10.3130/aije.89.193

    • ISSN
      1348-0685, 1881-817X
    • Year and Date
      2024-04-01
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Exploring perceived oppressiveness of high-rise window views: A virtual reality assessment of planning measures and visual elements' influence2024

    • Author(s)
      Wang Fei、Munakata Jun
    • Journal Title

      Journal of Building Engineering

      Volume: 96 Pages: 110476-110476

    • DOI

      10.1016/j.jobe.2024.110476

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Assessing effects of facade characteristics and visual elements on perceived oppressiveness in high-rise window views via virtual reality2024

    • Author(s)
      Wang Fei、Munakata Jun
    • Journal Title

      Building and Environment

      Volume: 266 Pages: 112043-112043

    • DOI

      10.1016/j.buildenv.2024.112043

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed
  • [Journal Article] CAUSAL CONNECTION BETWEEN PSYCHOLOGICAL VIEW AND DAYLIGHTING EVALUATION IN LIVING SPACES2023

    • Author(s)
      Budoh, Y., Sasaki, S., Yoshizawa, N. Oe, Y., Kishimoto, N., Taniguchi, K.
    • Journal Title

      Proceedings of CIE Conference 2023

      Volume: 2 Pages: 1472-1478

    • DOI

      10.25039/x50.2023.po089

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] VIEW EVALUATION INDEX USING VISIBLE VOLUME IN OFFICE BUILDINGS2023

    • Author(s)
      Arano, K., Ohki, C., Miyake, H., Oe, Y., Munakata, J., Kato, M., Yoshizawa, N.
    • Journal Title

      Proceedings of CIE Conference 2023

      Volume: 2 Pages: 1462-1471

    • DOI

      10.25039/x50.2023.po081

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] EVALUATION STRUCTURE OF VISUAL ENVIRONMENT CAUSED BY WINDOWS: RELATIONSHIP BETWEEN VIEW AND DAYLIGHTING2023

    • Author(s)
      Ohki, C., Yoshizawa, N., Matsuda, K., Hori, Y., Matsunaga, S., Oe, Y., Kato, M., Munakata, J.
    • Journal Title

      Proceedings of CIE Conference 2023

      Volume: 2 Pages: 1444-1453

    • DOI

      10.25039/x50.2023.po078

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Presentation] 天窓を有する空間の開放感に関する研究 その2 様々な観察位置からの比較2025

    • Author(s)
      宗方淳
    • Organizer
      日本建築学会大会学術講演梗概集(九州)
    • Related Report
      2024 Annual Research Report
  • [Presentation] 住宅窓の心理的印象に関する研究2024

    • Author(s)
      宗方淳,荒川望実
    • Organizer
      2024年度照明学会第57回全国大会
    • Related Report
      2024 Annual Research Report
  • [Presentation] Assessing the perceived oppressiveness of high-rise window views: Using virtual reality to evaluate planning measures and visual elements2024

    • Author(s)
      Fei Wang, Jun Munakata
    • Organizer
      1st International Conference for New Cities "Planning New Regenerative Cities"
    • Related Report
      2024 Annual Research Report
  • [Presentation] 天窓を有する空間の開放感に関する研究2024

    • Author(s)
      滝沢颯,宗方淳
    • Organizer
      日本建築学会大会学術講演梗概集(関東)
    • Related Report
      2024 Annual Research Report
  • [Presentation] 業務用建物における鉛直面照度を用いた採光性評価手法の検討2024

    • Author(s)
      武道 祐樹, 谷口 景一朗, 山口 秀樹, 三木 保弘, 加藤 未佳, 宗方 淳, 吉澤 望
    • Organizer
      日本建築学会大会学術講演梗概集(関東)
    • Related Report
      2024 Annual Research Report
  • [Presentation] 業務用建物における可視容積を用いた眺望性評価手法の検討2024

    • Author(s)
      柏熊 陸斗, 荒野 華織, 大木 知佳子, 大江 由起, 山口 秀樹, 加藤 未佳, 三木 保弘, 宗方 淳, 吉澤 望
    • Organizer
      日本建築学会大会学術講演梗概集(関東)
    • Related Report
      2024 Annual Research Report
  • [Presentation] Verifying the Validity of View Quality Assessments in Commercial Buildings Using Head-Mounted Displays2024

    • Author(s)
      Kashiwaguma Rikuto, Yamaguchi Hideki, Kato Mika, Miki Yasuhiro, Munakata Jun, Yoshizawa Nozomu
    • Organizer
      International Association for People-Environment Studies (IAPS) conference 2024
    • Related Report
      2024 Annual Research Report
  • [Presentation] Verifying the Validity of View Quality Assessments in Commercial Buildings Using Head-Mounted Displays2024

    • Author(s)
      Kashiwaguma R., Yamaguchi H., Kato M., Miki Y., Munakata Jun., Yoshizawa N.
    • Organizer
      IAPS conference 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 業務用建物におけ る 鉛直面照度を用いた 採光 性評価手法 の検討2024

    • Author(s)
      武道祐樹, 谷口景一朗, 山口秀樹, 三木保弘, 加藤未佳, 宗方淳, 吉澤望
    • Organizer
      2024年度日本建築学会大会(関東)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 業務用建物における可視容積を用いた眺望性評価手法の検討2024

    • Author(s)
      柏熊陸斗, 荒野華織, 大木知佳, 大江由起, 山口秀樹, 三木保弘, 加藤未佳, 宗方淳, 吉澤望
    • Organizer
      2024年度日本建築学会大会(関東)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 眺望を印刷したフィルムを貼付した窓に対する心理印象に関する研究2023

    • Author(s)
      包欣桐,宗方淳
    • Organizer
      人間・環境学会第30回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 天窓のある空間の開放感に関する研究2023

    • Author(s)
      長井航太,宗方淳
    • Organizer
      人間・環境学会第30回大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 仮想評価による窓の心理印象に関する研究(その1)調査の概要および窓の想定と心理印象の関係2023

    • Author(s)
      宗方淳,荒川望実
    • Organizer
      2023年度日本建築学会大会(近畿)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 仮想評価による窓の心理印象に関する研究(その2)周辺状況の違い別の窓の想定と心理印象の関係2023

    • Author(s)
      荒川望実,宗方淳
    • Organizer
      2023年度日本建築学会大会(近畿)
    • Related Report
      2023 Annual Research Report
  • [Presentation] 居間空間における窓がもたらす視環境の評価構造 -眺望と採光評価の関係性-2023

    • Author(s)
      武道祐樹, 岸本尚, 谷口景一朗, 大江由紀, 吉澤望
    • Organizer
      2023年度日本建築学会大会(近畿)
    • Related Report
      2023 Annual Research Report
  • [Presentation] Evaluation structure of lighting quality and view through windows in the residential spaces2022

    • Author(s)
      KAORI ARANO, KEITA MATSUDA, TAKANORI KABAKI, YUKI OE, NOZOMU YOSHIZAWA
    • Organizer
      The 17th International Symposium on the Science and Technology of Lighting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Comparison of Physical Quantities and View Evaluation in Commercial Buildings2022

    • Author(s)
      Keita Matsuda, Kaori Arano, Takanori Kabaki, Yuki Oe, Yoshiro Hori, Shigeki Matsunaga, Nozomu Yoshizawa
    • Organizer
      The 17th International Symposium on the Science and Technology of Lighting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 住宅の居間における窓を含む視環境の評価構造の解明2022

    • Author(s)
      荒野華織,松田啓汰,樺木隆則,大江由起,加藤未佳,佐野奈緒子,宗方淳,吉澤望
    • Organizer
      日本建築学会大会(東海)
    • Related Report
      2022 Annual Research Report
  • [Presentation] 窓の眺望から得られる心理的な影響と幸福感に関する研究2022

    • Author(s)
      荒川望実,宗方淳
    • Organizer
      日本建築学会大会(東海)
    • Related Report
      2022 Annual Research Report

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Published: 2022-04-19   Modified: 2026-01-16  

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