| 主权项 |
1. A working chamber comprising:
a box-shaped body case including a work space in an interior thereof and an insertion portion, in a front surface thereof, to which a glove for inserting a worker's arm is mounted; a supply device configured to supply gas in an exterior of the body case, through a supply filter, into the work space in the body case; a work plate configuring a bottom surface of the work space, the bottom surface having an opening formed therein; a storage chamber provided below the work plate, the storage chamber communicating with the work space through the opening; and an observation device capable of being lifted and lowered so that the whole thereof is disposed in the storage chamber when the observation device is in a housed state and at least a part thereof is disposed in the work space when the observation device is in an in-use state, the observation device having a receiving portion on a side surface thereof, the receiving portion having a width in a horizontal direction greater than a gap between the work plate and the observation device in the in-use state, the receiving portion being configured to close the gap between the observation device and the work plate, with an upper end portion of the receiving portion and a back surface of the work plate being in contact with or adjacent to each other, in the in-use state of the observation device. |
