Shutter device

A shutter device comprising:

• a base plate in which an opening is formed;
• a trailing blade configured to open and close the opening;
• a trailing drive member configured
• to rotate in an opening direction to move the trailing blade to an open position at which the trailing blade opens the opening and
• to rotate in a closing direction opposite to the opening direction to move the trailing blade to a closed position at which the trailing blade covers the opening;
• a trailing charge mechanism
• including a trailing drive spring and a trailing charge member configured to elastically deform the trailing drive spring and
• configured to rotate the trailing charge member in a charge direction in which the trailing drive spring is elastically deformed to generate biasing force and to rotate, using the biasing force of the trailing drive spring, the trailing charge member in a drive direction opposite to the charge direction to cause the trailing charge member to rotate the trailing drive member in the closing direction;
• a trailing lock member configured to lock the trailing charge member having rotated in the charge direction;
• a first trailing hold member configured to hold, using electromagnetic force, the trailing lock member which has locked the trailing charge member;
• and
• a trailing biasing mechanism configured to generate biasing force for biasing the trailing lock member in a release direction in which the trailing charge member is unlocked after the trailing lock member is held by the first trailing hold member.