Patent application number | Description | Published |
20110296803 | AIR FILTER CLEANER AND VIDEO PROJECTOR - An air filter cleaner includes a brush, which cleans an air filter. A case moves back and forth together with the brush, which is arranged on the case. A pinion moves the brush and case back and forth and is arranged in the case. A rack supports the pinion. The rack is arranged along a direction in which the brush moves back and forth and includes a side surface facing toward the case. A groove, which is arranged in the side surface of the rack, extends in the direction in which the brush moves back and forth. A flange, which extends from the case, engages with and slides in the groove. The engagement of the groove and flange restricts movement of the case in a direction perpendicular to the direction in which the brush moves back and forth. | 12-08-2011 |
20110298994 | AIR FILTER CLEANER AND VIDEO PROJECTOR - An air filter cleaner includes an air filter that captures dust. A brush cleans the air filter. A dust box collects dust from the brush. A rotary shaft rotates the brush. A moving mechanism moves the brush and the dust box using the rotation of the brush. A one-way clutch connects the brush and the rotary shaft. | 12-08-2011 |
20110299040 | AIR FILTER DEVICE AND VIDEO PROJECTOR USING AIR FILTER DEVICE - An air filter device including a first air filter that captures dust from intake air and includes a rim, a filtering surface surrounded by the rim, and a grid dividing the filtering surface into a plurality of sections. A base includes an opening, through which air is drawn, and a frame, which surrounds the opening. The first air filter is coupled to the frame at an upstream side of the opening. A cleaner includes a rotation brush that moves along an upstream surface of the first air filter while rotating to remove dust from the first air filter. A support contacts and supports the rim and the frame at a downstream side of the first air filter against pressing forced applied to the first air filter by the rotation brush. | 12-08-2011 |
20110299041 | AIR FILTER DEVICE AND VIDEO PROJECTOR USING AIR FILTER DEVICE - An air filter device including a base, air filter, and self-propelled cleaning unit. The base includes a frame defining an opening through which air is drawn. The air filter captures dust from the air passing through the opening. The air filter is fastened to the frame by a fastener and includes an filter surface. The self-propelled cleaning unit is coupled to the base, moves along the filter surface when cleaning the first air filter, and is located at a standby position on the frame of the base when in a non-cleaning state. The self-propelled cleaning unit, which includes a cleaning brush, a dust box, and a motor, lies away from the entire filter surface of the first air filter and the fastener when located at the standby position. | 12-08-2011 |
20110299042 | AIR FILTER DEVICE AND VIDEO PROJECTOR USING AIR FILTER DEVICE - An air filter device for a video projector, which includes a light source lamp having an optical axis and which is used in a state in which the optical axis of the light source lamp is horizontal. The air filter device includes an air filter and a cleaner that cleans the air filter. The cleaner includes a rotation brush rotated about a rotation axis to remove dust from the air filter while moving along an upstream side of the air filter. The rotation brush moves in a direction parallel to the optical axis of the light source lamp. A dust box receives dust removed from the rotation brush. The dust box includes an elongated container, which extends parallel to the rotation axis of the rotation brush, and a dust inlet, which opens toward the rotation brush to receive the dust from the rotation brush. | 12-08-2011 |
20110299043 | FILTER UNIT AND VIDEO PROJECTOR - 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. | 12-08-2011 |
20120151885 | AIR FILTER DEVICE AND ELECTRONIC DEVICE - An air filter device includes an air filter that removes dust from air drawn into a device. The air filter includes an air filter surface. A brush including bristles removes dust from the air filter. The brush and the air filter are relatively moved in a direction orthogonal to a longitudinal direction of the brush while distal parts of the bristles of the brush penetrate the air filter surface to remove dust from the air filter. A unit for reducing or eliminating penetration reduces or eliminates penetration of the brush into the air filter when relative movement of the brush and the air filter is stopped. | 06-21-2012 |
20120154694 | VIDEO PROJECTOR - A projector is provided with a housing including an air inlet and an air filter that covers the air inlet. The air filter is arranged on the housing. A clogging detection sensor detects a clogging degree of the air filter. A projection lens, which serves as a presentation unit displays the clogging degree of the air filter. A control unit displays the clogging degree with the projection lens in three or more stages based on the detection result of the clogging degree. | 06-21-2012 |
20120154762 | VIDEO PROJECTOR - A video projector includes an air inlet that draws in ambient air. An air filter device includes an air filter attached to the air inlet and performs a cleaning operation to remove dust from the air filter in accordance with a cleaning operation sequence. An intake fan draws in the ambient air through the air filter as cooling air for cooling a light valve. A lamp cooling fan sends interior air to a light source lamp as cooling air for cooling the light source lamp. A discharge fan discharges the interior air that has cooled the light source lamp or the light valve. The cleaning operation sequence is configured to perform the cleaning operation during a cooling operation period in which the intake fan is stopped after a projection operation ends while the lamp cooling fan and the discharge fan are operating to cool the light source lamp. | 06-21-2012 |