LED光源設計對芭樂意象影響之研究

LED Lighting Design in Enhancing Object Satisfaction

施恆慧(Heng-Hui Shih)；吳志富(Chih-Fu Wu)；王士賓(Shih-Bin Wang)

LED燈 ； 色溫 ； 照度 ； 演色性 ； 意象 ； LED light ； Color Temperature ； Illuminance ； Color Rendering ； Image

設計學報

25卷1期（2020 / 03 / 01）

47 - 62

繁體中文

本研究利用LED光源色溫（°K）、演色性（CRI）、照度（lux）等屬性進行光源組合來探討其對芭樂意象之影響，以了解如何應用光源設計使芭樂呈現悅人的感受。本研究水果採用芭樂為例作為研究。首先，利用問卷調查分析，集群分析得到六種水果意象詞彙。其次，進行光源情境規劃，選擇色溫（2700，4000）（°K），顯色性（70，80）（CRI）和照度（750，1500）（Lux），設計了8種LED光源組合。在此8種光源組合情境下，針對六種芭樂意象與整體滿意度，進行受測者偏好實驗。所獲得評價數據則進行變異數分析，關聯法分析。結果顯示光源組合對受測者芭樂評價影響非常顯著。受測者在色溫2700（°K）、演色性80（CRI）、照度750（Lux）時有最差的芭樂整體滿意度。本研究則建議採用色溫4000（°K）、演色性70（CRI）、照度1500（Lux）之光源組合以提高受測者芭樂整體滿意度。另外，芭樂之各項意象詞彙與整體滿意度關聯性均顯著，新鮮、口感細緻、晶瑩剔透和香脆與整體滿意度關聯性均高，酸甜可口與濃郁香氣則較低。本結果顯示利用光源之設計可營造水果特殊意象，帶給人們正面之心理認知與感受。本研究結果可供光源照明設計師參考，作為改善照明條件之依據。

This study explores the effects of light source on the imagery of guava to understand how light source design can be used to make fruits feel pleasing. First, using questionnaire analysis and cluster analysis, six fruit image vocabulary were obtained. Based on combinations of color temperature (2700°K, 4000°K), color rendering (70 CRI, 80 CRI), and illuminance (750 Lux, 1500 Lux), 8 LED light sources were designed. Then, under these light sources, experiments of guava preference for six images and overall satisfaction were conducted. The obtained evaluation data was further analyzed by the analysis of variance and the correlation analysis. The results show that combinations of the light source have significant effects on the evaluation of the overall satisfaction. The participants reported the worst overall satisfaction when the light source is at color temperature of 2700 (°K), color rendering (80CRI), and illuminance of 750 (Lux). Thus, a combination of color temperature (4000°k), color rendering 70 (CRI), and illumination 1500 (Lux) was proposed to improve the overall satisfaction of the testers. In addition, all the six images are significantly correlated with the overall satisfaction, the correlation of the four images of fresh, fine taste, crystal clear and crisp is high, but those of sweet and sour and rich aroma is low. The results show that the use of light source design can create a special image of fruit, giving people positive psychological awareness and feelings. The results of this study can be used as a reference for light design as a basis for improving lighting conditions.

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