Development of fixed solar lighting mirror to facilitate daylighting of architectural space

2014 Fiscal Year Final Research Report

• Project/Area Number: 25889007
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Architectural environment/Equipment
• Research Institution: Tohoku University
• Principal Investigator: HIKARU Kobyashi 東北大学, 工学(系)研究科(研究院), 准教授 (90709734)
• Project Period (FY): 2013-08-30 – 2015-03-31
• Keywords: 昼光利用 / 自然採光 / 非結像

Outline of Final Research Achievements

With respect to daylighting technology which uses direct sunlight to the architectural space, we were examined the possibility of fixed lighting devices which are not significantly affected by solar trajectory. We succeeded to develop basic daylighting louver shape which can be installed as 2D surface outside of window or top of building vertical void space. Which can diffuse direct sun light to indoor ceiling or wall of void space.
By applying the design method of former mentioned louver, we also developed basic idea of daylighting device which can be used as top light. The device has 3D rotary body shape of the louver which has center of rotation parallel to the axis of the earth. Daylighting devices using this method are not affected at all solar azimuth theoretically and the method makes it possible to plan daylighting device for irradiating a limited range in a space, stably.

Free Research Field

建築環境工学