Abstract:
ฉลุลายสีดำ ที่มีความโปร่งอยู่ในช่วง 40% - 45%
Other Abstract: At present, external screen shading devices are used as sunlight blocking devices for buildings openings and also act as building decoration. One type of shading device that has begun to become popular in architectural design is made of perforated aluminum sheets attached parallel to a building wall. A special property of this kind of shading device is that it allows some light to penetrate in exchange for some visibility. After reviewing the relevant literature, the researcher found that there had been no research done on the effect of perforated external screen shading devices on visual comfort. Therefore, this research studys main objective was to study the characteristics of perforated shading devices in regards to how they affect visual comfort and visibility when a person looks through them. This research study was an experimental research study. 120 students from the Faculty of Architecture, Naresuan University were given a questionnaire in order to evaluate their visual comfort and visibility. They were asked to look through an experiment box equipped with a perforated aluminum sheet to block the light. There were 3 colors of perforated aluminum sheets, which were white (01210), grey (00117), and black (0039). The color codes used were based on the color codes of FAMELINE architectural products. Each color had 4 translucence levels ranging from 20%, 35%, 50% to 65%. There were 2 perforation patterns. Analytical methods to test the researchs hypotheses included Repeated Measures ANOVA and Regression Analysis. The research findings showed that the black perforated aluminium shading sheet had the highest scores both in terms of visual comfort and visibility. Different translucence levels resulted in significantly different scores of visual comfort (F(3,177)=50.661,p<0.05). The translucence level of 20% resulted in the score being at the acceptable level (Mean=1.36). The visibility scores also varied significantly (F(3,177)=55.059,p<0.05). However, at the translucence level of 20%, the visibility score was rated as unclear and begins to become unacceptable (Mean = 2.54) as opposed to the aluminum sheets with a high translucence level. This research study determined that the shading device that was most efficient in both ways and suitable for actual use is the black perforated aluminum shading device with the translucence levels ranging from 40% to 45%.