| 摘要 |
<p>An accident induced by gas may be prevented by preventing a user from forgetting that a gas apparatus is being used and from moving away therefrom. By using this simple principle, a user may fit a gas alarm apparatus on a gas valve which has been installed originally without great expense or may bond the gas alarm apparatus thereto to use it. As shown in Figure 1, a metal bead (1-4) is inserted into a cylindrical tube to roll and, whenever the gas valve (1-2) is vertically moved, the metal bead moves to one side to contact connecting lines (1-9) of positive and negative poles of a metal bar, conducting electricity. On the contrary, when the gas valve is closed, the cylindrical tube including the metal bead maintains horizontal position not to conduct electricity, turning off LED lamps. The above gas alarm apparatus may prevent overheating or a gas leakage accident induced by the overuse of the gas apparatus by preventing a danger which occurs when the user moves away from the gas apparatus while using it. Furthermore, when the use moves to a distant place while forgetting that the gas apparatus is being used, the gas alarm apparatus may provide the user with the effect of reducing a waste of time when the user returns and turns off the gas apparatus and may prevent concern about whether the gas apparatus is being used or not.</p> |
