| 摘要 |
PURPOSE:To prevent the occurrence of deficiency in oxygen through ventilation effected by of a user, and to improve safety, by a method wherein a clock time by a timer is compared with a set time, and when the clock time attains the set time, an alarming part sounds an alarm by of an output from a comparing means. CONSTITUTION:When operation is stated by means of an operation switch 3, a timer setting time is defined by means of an initial set part 13, and a timer count value is cleared to perform initial setting. It is confirmed by an operation switch confirming part whether the operation switch is turned ON or not, an ignition detecting part 6 confirms that combustion is effected to detect that ignition is effective. A timer count value adding part adds 1 to a timer count value. When a timer set time is coincided with a timer count value, after an alarm part 15 sounds an alarm based on a predetermined sequence, repetition of motion is stated from the beginning again. This constitution, when combustion is started, sounds an alarm at periodical intervals of a set time, and causes a user to acquire a habit of prevention of the occurrence of a deficiency in oxygen accident. |
