| 摘要 |
<p>PROBLEM TO BE SOLVED: To protect the internal circuit board of a portable personal dosemeter from electromagnetic noise, and to make its assemblability better. SOLUTION: An internal circuit board 10 is wrapped by an aluminum film 13, and furthermore it is put into a shielding bag 20. The shielding bag 20 is a conductive mesh member. The opening 20A of the shielding bag 20 is fixed to the periphery of a holder 14 by two clips 24A, 24B. In an assembled state, the whole of the internal circuit board 10 is shielded by the shielding bag 20 and a cap 26.</p> |
