Riken Keiki Co., Ltd.

Masahide Kitamura

Shuji Tajima

Junichi Koyano

Juniti Koyano

Haruhiko Kondo

Yoshiharu Ao

Disclosed is a portable gas alarm device easy to be fabricated as a small-sized one handy to carry and high in convenience for use. The portable gas alarm device comprises a gas alarm device body having a casing flat in whole and a fitting member provided on the casing to fit it to the human body. The gas alarm device body has a control circuit board extending to the direction of the flat plane of the casing, a display mechanism is arranged in a central area on the front surface side of the control circuit board, a gas sensor and an alarm buzzer are arranged on the right and left sides of the display mechanism, and a battery fitting chamber is provided on the back surface side of the circuit board. A vibration generator for alarm may be provided in the gas alarm device body. The fitting member may be one suitable for use in fitting the gas alarm device body to a person's wrist or a person's wear.

Portable gas alarm device

A portable gas detector comprises a casing proper adapted to be attached to the human body. The casing proper has multiple openings to accommodate gas sensors on one side and charging terminals and a communication window on the other. Calibration of the gas sensors and securing of power supply are easy to achieve.

Portable gas detector and its cradle

Portable gas detector-alarm

Wrist watch type gas measuring device

Growing community of inventors

Tokyo, Japan

Masahide Kitamura