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US 2011/0299043 A1Published application
Filter unit and video projector
AssigneeSanyo Electric Co., Ltd.
InventorsYosuke Nishihata, Akira Miyanaga, Yoshiharu Arioka, Hideaki Okaniwa
Life of this patent
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Abstract
A filter unit includes an air filter, which captures dust from intake air, and a cleaning unit, which automatically cleans the air filter. The cleaning unit includes a rotation brush, which removes dust from the air filter, and a dust box, which extends parallel to the rotation brush. The dust box includes a dust inlet that opens toward the rotation brush and receives dust from the rotation brush. The dust box is removable from the filter unit.
Claims14
A filter unit comprising:
- an air filter that captures dust from intake air;
- and
- a cleaning unit that automatically cleans the air filter, wherein the cleaning unit includes
- a rotation brush that removes dust from the air filter and includes a rotation axis, and
- a dust box, a longitudinal direction of which is parallel to the rotation axis of the rotation brush, wherein the dust box includes a dust inlet that extends in the longitudinal direction and opens toward the rotation brush to receive dust from the rotation brush, and the dust box is removable from the filter unit.
2 more elements
A filter unit comprising:
- a base including an opening through which air is drawn;
- a flat air filter coupled to the base to capture dust from the air passing through the opening;
- and
- a self-propelled cleaning unit arranged at an upstream side of the air filter to clean the air filter, wherein the cleaning unit includes
- a housing movably coupled to the base,
- a rotation brush coupled to the housing facing toward the upstream side of the air filter and including a rotation axis, and
- a dust box pivotally supported by the housing and removable from the housing, wherein the dust box includes a dust inlet that extends in the rotation axis of the rotation brush and opens toward the rotation brush to receive dust from the rotation brush.
4 more elements
Dependencies are inferred from the claim text.