Patent ID: 8453492

Claim:
A breath alcohol measuring apparatus comprising: a casing that is held by a hand of a to-be-measured person during a measurement; a breath blowing portion that is provided to the casing, and into which a breath of the to-be-measured person is blown; an alcohol sensor that measures an alcohol concentration of the breath blown into the breath blowing portion; a breath force sensor that measures a force of the breath blown into the breath blowing portion; a breath force display portion that is provided to the casing for displaying the force measured by the breath force sensor; and a CPU, wherein, when the force is kept to fall within a valid range, which is the range of the force that makes the measurement of the alcohol concentration by the alcohol sensor valid, the CPU updates a breath amount accumulation value that is an accumulation value of the amount of the breath blown into the breath blowing portion; when the force is placed outside the valid range, the CPU resets the breath amount accumulation value; and when the breath amount accumulation value reaches a valid breath amount, which is the breath amount that makes the measurement of the alcohol concentration by the alcohol sensor valid, the CPU measures the alcohol concentration by the alcohol sensor, and the breath force display portion is arranged at the position that can be visually recognized by the to-be-measured person who is blowing into the breath blowing portion.