| 摘要 |
<p>The door knob having a function of sensing the degree of a rise in temperature proposed by the present invention comprises a color-changing layer (300) that changes color according to the temperature, thereby enabling a firefighter or evacuee to easily verify flashover and back-draft phenomena by sensing changes in the temperature of a closed indoor space with the naked eye, to thus prevent fatal harm caused by the occurrence of flashovers and back-drafts, and likewise thereby sensing the degree of the rise in temperature.</p> |
