  Thermal sensation is crucial to enhancing our comprehension of the world and
enhancing our ability to interact with it. Therefore, the development of
thermal sensation presentation technologies holds significant potential,
providing a novel method of interaction. Traditional technologies often leave
residual heat in the system or the skin, affecting subsequent presentations.
Our study focuses on presenting thermal sensations with low residual heat,
especially cold sensations. To mitigate the impact of residual heat in the
presentation system, we opted for a non-contact method, and to address the
influence of residual heat on the skin, we present thermal sensations without
significantly altering skin temperature. Specifically, we integrated two highly
responsive and independent heat transfer mechanisms: convection via cold air
and radiation via visible light, providing non-contact thermal stimuli. By
rapidly alternating between perceptible decreases and imperceptible increases
in temperature on the same skin area, we maintained near-constant skin
temperature while presenting continuous cold sensations. In our experiments
involving 15 participants, we observed that when the cooling rate was -0.2 to
-0.24 degree celsius per second and the cooling time ratio was 30 to 50 %, more
than 86.67 % of the participants perceived only persistent cold without any
warmth.
