Optics: image projectors – Temperature control
Reexamination Certificate
2006-03-06
2009-06-09
Dowling, William C (Department: 2851)
Optics: image projectors
Temperature control
C353S119000
Reexamination Certificate
active
07543942
ABSTRACT:
An automatic door apparatus of a projector is provided. The projector includes a case. The case has a heat discharging opening for discharging heat out of the projector. The automatic door apparatus includes: a frame disposed at the case, the frame facing the heat discharge opening; a door assembly reciprocally movable along the frame in a first direction for opening and closing the heat discharge opening; and a driving unit disposed in the case for moving the door assembly along the first direction, the driving unit moving the door assembly along the first direction from a first position to a second position to open the heat discharge opening in response to a first operation mode of the projector, the driving unit moving the door assembly along the first direction from the second position to the first position to close the heat discharge opening in response to a second operation mode of the projector.
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Birch & Stewart Kolasch & Birch, LLP
Dowling William C
LG Electronics Inc.
Owens Danell L
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