Patent ID: 6744373
Filing Date: 2004-06-01
Classification: G08B

Abstract:
A portable gas alarm device comprising:a gas alarm device body comprising a substantially flat casing; a fitting member provided on the casing for fitting the gas alarm device body to a human body; a control circuit board provided inside the casing and extending in a direction of a flat plane of the casing; a display mechanism arranged in a central area of the casing on a front surface of the control circuit board; a gas sensor and an alarm buzzer each arranged on one of a right side and a left side of the display mechanism; and a battery fitting chamber provided on a back surface of the circuit board; wherein a gas sensor holding part and an alarm buzzer holding part are formed on surface positions of the casing projecting above the central area in which the display mechanism is arranged; and wherein a light emitting part for alarm and at least one operating button are provided on upper and lower sides of the display mechanism on a front surface side of the control circuit board in the gas alarm device body.