GAS FLOW RATE CONTROL DEVICE AND DISPLAY DEVICE FOR FLOW RATE CONTROL

摘要

PROBLEM TO BE SOLVED: To provide a gas flow control device capable of improving the visibil ity, and a display device for adjusting a flow rate. SOLUTION: An opening and closing valve is mounted on an outlet of a gas cylinder. A flow rate of a gas supplied from the gas cylinder is adjusted by opening and closing the opening and closing valve by an operating means 7. A display means 8 is provided with plural light sources respectively mounted corresponding to predetermined levels of the gas flow rate. Plural projecting parts 810-819 made of a light transmitting member and projecting from a display face of the display means are respectively mounted corresponding to the light sources. A measuring means measures the gas flow rate. A light emission control means energizes the light source corresponding to the level of the measured gas flow rate.