DAYLIGHTING DEVICE PRESENTING HEAT ABSORPTION ACTION OF SUNLIGHT IN WINTER

• Main Authors: ARAI HIDEO, OGATA NOBUYUKI, ENDO MAKIKO, YOSHIDA UMI, SHIOZAWA HIDEKI, FUJIHIRA SHINICHI, OGURA YUTAKA
• Format: Patent
• Language: English; Japanese
• Published: 07.10.2021
• Subjects: BLASTING; HEATING; LIGHTING; MECHANICAL ENGINEERING; NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS; WEAPONS

To attain improvement/enhancement of a life environment in winter, namely, to attain new effective utilization of sunlight in winter at a low elevation angle by supporting processing such as heating, snow melting and dew condensation prevention through an action of transferring heat which is generated on a heat absorption surface of a tabular member for daylighting to a peripheral area, etc.SOLUTION: In a daylighting device, a plurality of tabular members 2 is disposed in a parallel state, the tabular member including a sunlight reflection portion on a mirror surface 2a and a sunlight heat absorption portion on a heat absorption surface 2b on a rear side. For each of the tabular members 2, a side of the heat absorption surface 2b presenting a heat absorption action is set downward and southward, and a side of the mirror surface 2a presenting a reflection action is set upward and northward. The entire tabular member 2 is disposed in a southward and upward tilted mode that sunlight in winter at a low elevation angle reaches the heat absorption portion. Sunlight 5 in southing about at the winter solstice is absorbed by the heat absorption surface 2b, sunlight 6 in southing about at the spring equinox and the autumn equinox and sunlight 7 in southing about at the summer solstice are incident indoors.SELECTED DRAWING: Figure 1 【課題】採光用板状部材の熱吸収面で生じた熱をその周辺域などに伝える作用により、暖房、融雪、結露防止などの処理をサポートして冬季生活環境の良好化・改善化を図る、すなわち低仰角の冬季太陽光の新たな有効利用化を図る。【解決手段】鏡面２ａに太陽光の反射部分を有し、その裏側の熱吸収面２ｂに太陽光の熱吸収部分を有する複数の板状部材２を並列状態で配設した採光装置において、板状部材２はそれぞれ、熱吸収作用を呈する熱吸収面２ｂの側が下向き、かつ南向きに、また、反射作用を呈する鏡面２ａの側が上向き、かつ北向きに設定され、板状部材２の全体は、低仰角の冬季太陽光が熱吸収部分に到達する南上がりの傾斜態様で配設した。冬至ごろの南中時太陽光５は熱吸収面２ｂに吸収され、春分，秋分ごろの南中時太陽光６および夏至ごろの南中時太陽光７は屋内側へと入射する。【選択図】図１