| 摘要 |
<p>PROBLEM TO BE SOLVED: To illuminate a display part when using a radiation-measuring device at a dark area. SOLUTION: A survey meter 8 is composed of a body 10 and a detector 12, and the body 10 is provided with a display part 14 where a light accumulation layer 100 is coated. When the survey meter 8 is used at a dark area such as a machine room, the light accumulation layer 100 operates to illuminate the display part 14, thus allowing the display part 14 to emit light naturally without providing a light source or the like. When the survey meter 8 is accommodated in a storage, light is allowed to enter the storage from the outside or a light source is provided in the storage, thus fully applying light to the light accumulation 1 layer 100 when the survey meter 8 is not in use.</p> |
