Effect of the Density of Lattice and the Lighting Environment on the Evaluation of Comfortable Inside of Machiya-cafes

Abstract

The purpose of this study is to show the effect of the density of lattice and the lighting environment on the evaluation of comfort at Machiya-cafes. We conducted a subjective evaluation by using a scale model of a Machiya-cafe with which the density of lattice and the lighting environment could be changed. In this experiment, subjects evaluated four evaluation factors: "Recognizable from the outside," "Signline level from the outside," "Suitability of the lighting environment," and "Comfort at Machiya-cafes," with six steps of the categorical scale. Subjects were 15 female university students. As a result of the evaluation, it was shown that the evaluation of "Recognizable from the outside" was higher, as the density of lattice was bigger. For the evaluation of "Signline level from the outside" was higher, as the density of the lattice was smaller. For the evaluation of "Suitability of the lighting environment," subjects preferred a low color temperature to a high color temperature in the nighttime. For the evaluation of "Comfort at Machiya-cafes," it was shown that a 20 -40% density of lattice with a low color temperature was evaluated highest. Therefore, it was shown that a strong correlation was observed between the density of the lattice and the evaluation and that subjects preferred a low color temperature to a high color temperature in the nighttime.