`
`What is claimed is:
`
`l” A working chamber comprising:
`
`a.box—shaped1xxh7case includingeawork spaceijian interior
`
`
`
`in a ’ront surface thereof, to
`
`
`thereof and an insertion portion,
`
`
`which a glove for inserting a worker’s arm is mounted;
`
`
`
`a supply device configured.:o supply gas in an exterior or
`
`through a supply filter,
`
`
`
`into tre work space in
`
`
`
`the body case,
`
` the body case;
`
`
`
`
`
`
`aiwork plate configuringeabottonisur’ace o’ the work space,
`
`
`
`the bottom surface having an opening formed therein;
`
`astoragechamberprovidedbelmNtheworkplate,thestorage
`
`chamber communicating with the work space through the opening;
`
`and
`
`
`
`
`an observation device capable of being lifted and lowered
`
`
`so that the whole thereo: 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
`
`
`
`
`
`5
`
`10
`
`15
`
`20
`
`25
`
`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
`
`hori7ontal 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.
`
`30
`
`
`2. The working chamber according to claim 1, further comprising:
`
`DMiUS 6520887071.O92122.OO43
`
`
`
`18
`
`
`a discharge device configured to discharge
`
`
`
`filter, to the exterior o:
`
`space, through an outlet
`
`gas in the work
`
`f the body case;
`
`and
`
`
`a sterilization device configured to supply a sterilizing
`
`substance into the work
`
`space, wherein
`
`the receiving portion has a plurality of
`
`hole portions
`
`
`
`penetrating therethroug
`
`h.
`
`3. The working chamber according to claim 1,
`
`wherein
`
`in the observation device,
`
`
`when a stage trereof where an
`
`observationtarget'hsplaced'Hspositionedsibstan
`
`tiallyij1asame
`
`or adjacent to each 0t?
`
`er.
`
`
`
`
`
`
`
`
`plane as the work plate,
`the ipper end portion 0" the receiving
`
`portion and the back sur ace 0’ the work plate are
`
`in contact with
`
`4. The working chamber according to claim 3,
`
`wherein
`
`the receiving por
`
`tion extends outward from an inner end
`
`
`portion thereof, positioned below the stage, on t
`
`
`he side surface
`
`
`of
`
`
`the observation device, and the upper erd portion of
`
`the
`
`
`
`receiving portion is positioned above the inner end portion and
`
`below the stage.
`
`5. The working chamber according to claim 2,
`
`wherein
`
`in the observation device,
`
`
`when a stage trereof where an
`
`observationtarget'hsplaced'Hspositionedsibstan
`
`tiallyij1asame
`
`
`
`
`
`
`portion and the back sur
`
`plane as the work plate,
`
`the ipper end portion of the receiving
`
`ace 0’ the work plate are
`
`in contact with
`
`or adjacent to each 0t?
`
`er.
`
`6. The working chamber according to claim 5,
`
`wherein
`
`DMiUS 6520887071.O92122.OO43
`
`10
`
`15
`
`20
`
`25
`
`30
`
`
`
`19
`
`the receiving portion extends outward from an inner end
`
`
`
`portion thereof, positioned below the stage, on the side surface
`
`
`of
`
`
`the observation device, and the upper erd portion of
`
`the
`
`
`
`receiving portion is positioned above the inner end portion and
`
`below the stage.
`
`7.The working cqamber according to claim 1, wherein
`
`a top board having an area slightly smaller than an area
`
`
`o: the opening of the work plate is provided on an upper surface
`
`
` of the observation device, and
`
`the top board is positioned substantially in a same plane
`
`
`as the work plate and positioned within the opening of the work
`
`plate, when the observation device is in the housed state.
`
`8. The working chamber according to claim 1, wherein
`
`10
`
`l5
`
`the receiving portion has an inclined surface that
`
`is
`
`
`inclined upward and outward from an inner end portion.
`
`
`
`DMiUS 6520887071.O92122.OO43
`
`
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