| 摘要 |
PROBLEM TO BE SOLVED: To provide a shield device in which a shield operation and the adjustment of a shield state are facilitated. SOLUTION: The upper end section of a screen (2010) is connected to winders (2050 and 2052) through wires (2040 and 2042), and a lower end section is connected to the winders (2070 and 2072) through the wires (2060 and 2062). The winders (2050, 2052, 2070 an 2072) are driven by a driving device such as an electric motor. Limit switches (2080, 2082 and 2084) detecting the places of the screen (2010) at an upper limit, an intermediate place and a lower limit respectively are installed to a rail (2020). COPYRIGHT: (C)2005,JPO&NCIPI
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