冬季中太陽光綫落到地平面上埸合的放射力微弱及顯著的冷却(大半由於風的影響)對於日光療法的應用大有妨礙。爲避免此等不良因子,我們提議利用僅有南面開放的玻璃陽台。在陽台裏面,氣溫通常此露天高出許多,而溫度及風力則較底。太陽光綫應當在垂直方面中射到患者體表,就是在九十度角度中;但在實用上,七十度的角度較爲適用。這樣的角度增加太陽光綫强度一倍半到二倍半。需要的角度可移動支持患者頭部的躺椅的靠背來得到。此外應當用褥單及被頭鋪在躺椅上,如此可以完全避免寒冷因子(風),並且加强反射 In winter, the sun’s rays fall to the ground level and the combination of weak and significant cooling (mostly due to the influence of wind) greatly hinder the use of daylight therapy. To avoid these undesirable factors, we propose to utilize a glass balcony that is open to the south only. In the balcony, the temperature is usually much higher in the open air, while the temperature and the wind is more at the end. The sun’s rays should be perpendicular to the body surface of the patient, is in the ninety degree angle; but in practice, the angle of seventy degrees is more applicable. This angle increases the sun’s light intensity by one and a half to two and a half times. The required angle is obtained by moving the back of the couch that supports the patient’s head. In addition, the use of sheets and bedding should be laid on the couch so that the cold factor (wind) can be completely avoided and the reflections strengthened