可視光LEDで加熱する場合の人の温覚特性の調査

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  • Investigation of Characteristics of Human’s Warm Sensation Heated by Visible Light LEDs

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<p>Investigation of human thermal perception concerning a thermal display is important for designing a better interface. However, research about human perception characteristics for a thermal display using radiant heat has not been conducted so much. In this study, we examined human thermal perception when the palm was irradiated by visible light. Firstly, we compared temperature distribution in case of a peltier device and the visible light LEDs. The result showed that the temperature distribution of the LEDs was ununiform. Secondly, we revealed the minimum temperature where a human can feel the warmth on the skin. As a result, the required minimum temperature of the visible light LEDs to feel warmth is higher than that of a contact type thermal display. The result indicates that the difference between deep body temperature and skin temperature became small and that influences human thermal perception since visible light is absorbed into melanin and hemoglobin well.</p>

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