This technology is an evacuation route indicator featuring a base installed on the floor with protruding braille markers, a thermo-chromic sheet on top, and a melting material between the braille that liquefies when exposed to fire-related heat. It maintains a flat surface matching the floor under normal conditions and reveals the direction of the emergency exit during a fire.
Existing fire-sensing signs using thermochromic pigments could convey fire location information but failed to guide people directly to emergency exits or accommodate the evacuation of the visually impaired. Braille blocks with built-in LEDs and vibration motors require a power supply, leading to high installation and maintenance costs and a loss of functionality during power failures.
With this technology, when the ambient temperature rises due to a fire, the thermo-chromic sheet changes to a high-visibility color and the melting material liquefies to reveal the braille, allowing visually impaired individuals to read the path with a cane. It includes an elastic member that pushes the braille upward, further enhancing tactile readability. Applicable to evacuation systems in subway stations, public buildings, and multi-use facilities, it supports the safe evacuation of both sighted and visually impaired individuals without the need for external power or wiring.
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