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.

Abstract: A projection display device includes: a light modulator for modulating light from a light source; a polarizer disposed at a position facing the light modulator; a cooling section for allowing an air to flow in a space between the light modulator and the polarizer; and an air deflector for deflecting the air flowing in the space between the light modulator and the polarizer toward the polarizer.

Abstract: 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.

Abstract: A video projector for projecting light of an image includes a shutter capable of blocking the light of an image. The shutter includes a plate member movable between a light blocking position, at which the plate member blocks the light of an image, and a non-blocking position, at which the plate member does not block the light of an image. An accommodation body accommodates the plate member. A drive mechanism moves the plate member. The plate member includes an irradiated portion that is irradiated with the light of an image when the plate member is located at the light blocking position. The irradiated portion includes a central part from which a projection projects in a thicknesswise direction of the plate member.

Abstract: 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.

Abstract: 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.

Abstract: An electromagnetic shield structure of an electronics housing includes a terminal having a protrusion for external connection; a substrate having the terminal disposed thereon and electrically connected to the terminal; a housing made of resin, enclosing the substrate and having an opening at a position corresponding to the protrusion of the terminal on a front surface side where the protrusion of the terminal is located; and an electromagnetic shield disposed so as to surround the substrate inside the housing, having an opening at the position corresponding to the protrusion of the terminal, and electromagnetically shielding the substrate. The electromagnetic shield has a bent portion formed on the front surface side for filling a gap between the terminal and the housing.

Abstract: An electronic device with an opening/closing door according to the present invention includes a device body in which an opening is defined, and a shutter system capable of covering and exposing the opening. The shutter system includes a door for covering the opening, an arm, a driving member for driving the arm, and a mounting table having a front surface and a rear surface. The arm and the driving member are arranged on the front surface, and the door is arranged on the rear surface. The door is capable of sliding along the rear surface of the mounting table. The arm has a root end and a front end. The root end is pivotably supported on the front surface of the mounting table at a position closer to one side edge portion of the door than a center line of the width of the door. The front end engages with the other side edge portion of the door without holding the mounting table therebetween.

Abstract: 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.

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.

Abstract: 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.

Abstract: 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.

Abstract: A video projector including a housing to which an air filter is coupled in a removable manner. A brush cleans the air filter. A dust box collects dust from the brush and includes an opening that opens toward the brush. A handle is arranged on the housing so that the opening of the dust box is oriented upward when the handle is grasped to lift the housing.

Abstract: 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.

Abstract: 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.

Abstract: A video projector including a light source lamp and an optical component having a light transmission plane. A cooling system sends cooling air in parallel currents to the light transmission surface over a predetermined period after the light source lamp goes off to perform auto-cooling on the optical component. A shutter unit includes a planar shutter door that has a planar portion extending parallel to a direction the cooling air flows. The shutter door is moved parallel to the flow direction of the cooling air to open and close an optical path of the optical component. The shutter unit includes a current deflector formed integrally with the shutter door to deflect the flow of the cooling air toward the light transmission surface, and the current deflector directs the cooling air against the light transmission surface of the optical component during the auto-cooling.

Abstract: An electromagnetic shield structure of an electronics housing includes a terminal having a protrusion for external connection; a substrate having the terminal disposed thereon and electrically connected to the terminal; a housing made of resin, enclosing the substrate and having an opening at a position corresponding to the protrusion of the terminal on a front surface side where the protrusion of the terminal is located; and an electromagnetic shield disposed so as to surround the substrate inside the housing, having an opening at the position corresponding to the protrusion of the terminal, and electromagnetically shielding the substrate. The electromagnetic shield has a bent portion formed on the front surface side for filling a gap between the terminal and the housing.

Abstract: An electronic device with an opening/closing door of the present invention includes a device body in which an opening is defined, a shutter system capable of covering and exposing the opening, and a loosely fixing mechanism. The shutter system includes a door capable of moving back and forth between a closed position for covering the opening and an open position for exposing the opening, an arm swingably supported by the device body and having a front end engaging with the door, a motor for opening and closing the door by driving the arm, and a controller for controlling the operation of the motor. The controller is capable of switching the function of the motor between an electric motor and an electric generator. The loosely fixing mechanism is linked to the arm of the shutter system, and loosely fixes the arm when the door is placed at the open position, while loosely fixing the arm when the door is placed at the closed position.

Abstract: An electronic device with an opening/closing door according to the present invention includes a device body in which an opening is defined, and a shutter system capable of covering and exposing the opening. The shutter system includes a door for covering the opening, an arm, a driving member for driving the arm, and a mounting table having a front surface and a rear surface. The arm and the driving member are arranged on the front surface, and the door is arranged on the rear surface. The door is capable of sliding along the rear surface of the mounting table. The arm has a root end and a front end. The root end is pivotably supported on the front surface of the mounting table at a position closer to one side edge portion of the door than a center line of the width of the door. The front end engages with the other side edge portion of the door without holding the mounting table therebetween.

Abstract: A projection display device includes: a light modulator for modulating light from a light source; a polarizer disposed at a position facing the light modulator; a cooling section for allowing an air to flow in a space between the light modulator and the polarizer; and an air deflector for deflecting the air flowing in the space between the light modulator and the polarizer toward the polarizer.