摘要:
A projection display device includes: a projection portion which enlarges and projects the light modulated by a imager portion; a control circuit; and a main body cabinet. The projection portion is formed by a projection lens portion into which the light from the imager portion is entered and a mirror portion which reflects the light having passed through the projection lens portion and lets the light travel toward a projection plane. The mirror portion is disposed so as to be shifted from an optical axis of the projection lens portion in a direction opposite to a direction in which the incident light from the projection lens portion is turned back. The control circuit portion is disposed in a space which is produced between the projection lens portion and the main body cabinet by a position gap between the projection lens portion and the mirror portion.
摘要:
A projection display device includes an imager portion which is arranged in a position closer to one side surface of a main body cabinet to modulate light and guide the light in a direction away from the side surface, and a projection portion. The projection portion is formed by a projection lens portion and a mirror portion which reflects the light through the projection lens portion toward a projection plane. The mirror portion is disposed so as to be shifted from an optical axis of the projection lens portion in a direction opposite to a direction in which the light from the projection lens portion is turned back. A control circuit portion and a holding member are disposed within a space produced between the projection lens portion and the main body cabinet due to a position gap between the projection lens portion and the mirror portion.
摘要:
A projector comprises: a cooling fan for sucking ambient air through a filter; switching means for switching the operational mode of the cooling fan between a lowland mode and a highland mode; and control means adapted to obtain current fan voltage to determine the normal rpm value for that current fan voltage in reference to a highland voltage-rpm characteristic when the switching means is in the highland mode, obtain current fan rpm, and enables alarming means to issue a filter clogging alarm in the event that the current fan rpm is larger than the normal rpm value plus a predetermined value. Thus, filter clogging can be detected with precision in highlands.
摘要:
An airflow rate sensor is provided with a through hole, and a detection unit is disposed inside the through hole. The airflow rate is calculated based on the output voltage resulting from the temperature difference and the like caused in the detection unit by the air flowing through the through hole. A duct is provided with a concave portion so as to protrude from outside the duct toward the inside thereof. The airflow rate sensor is disposed in the duct so as to cover the concave portion, in which the through hole is in communication with the space in the concave portion. The concave portion has a bottom provided with an opening. Accordingly, an installation structure of a sensor for reliably sensing a flow rate and a projector apparatus having the same are provided.
摘要:
A projector comprises: a cooling fan for sucking ambient air through a filter; switching means for switching the operational mode of the cooling fan between a lowland mode and a highland mode; and control means adapted to obtain current fan voltage to determine the normal rpm value for that current fan voltage in reference to a highland voltage-rpm characteristic when the switching means is in the highland mode, obtain current fan rpm, and enables alarming means to issue a filter clogging alarm in the event that the current fan rpm is larger than the normal rpm value plus a predetermined value. Thus, filter clogging can be detected with precision in highlands.
摘要:
A projection display device includes: a light source; a light modulation portion which modulates light from the light source in accordance with an image signal; a projection portion which projects the light modulated by the light modulation portion onto a projection plane; a speaker device which outputs a sound in accordance with an audio signal; and a main body cabinet in which the light source, the light modulation portion, the projection portion, and the speaker device are disposed. The speaker device includes a speaker and a speaker box storing the speaker. The speaker box includes: a front panel to which the speaker is attached; an inner box which covers the speaker attached to the front panel from behind; and an outer box which covers the periphery of the inner box and is attached to the main body cabinet. There is a space created between the two boxes.
摘要:
A mounting structure for a temperature sensor, which detects the temperature of a wall surface. The mounting structure includes a groove formed in the wall surface and having an inlet from which the temperature sensor is inserted. The temperature sensor includes a main body, which has a temperature detection surface that detects the temperature of the wall surface, and a lead wire connected to the main body. A support supports the main body. A wire bender bends the lead wire of the temperature sensor extending out of the inlet to press the temperature detection surface of the temperature sensor against the wall surface with an elastic force of the lead wire that is produced when the lead wire is bent. A stopper restricts movement of the main body of the temperature sensor.
摘要:
A circuit board is attached in a displaceable manner to a lamp holder. When the lamp holder is attached to a holder housing, ends of pins extending from the holder housing are inserted into holes of the circuit board. At the time, the circuit board is guided and corrected for a positional shift by inclines at ends of the pins. Accordingly, a connector on an under surface of the circuit board is opposed to a connector on a circuit board in the holder housing side, whereby the two connectors can be properly connected.
摘要:
A mounting structure for a temperature sensor, which detects the temperature of a wall surface. The mounting structure includes a groove formed in the wall surface and having an inlet from which the temperature sensor is inserted. The temperature sensor includes a main body, which has a temperature detection surface that detects the temperature of the wall surface, and a lead wire connected to the main body. A support supports the main body. A wire bender bends the lead wire of the temperature sensor extending out of the inlet to press the temperature detection surface of the temperature sensor against the wall surface with an elastic force of the lead wire that is produced when the lead wire is bent. A stopper restricts movement of the main body of the temperature sensor.
摘要:
An airflow rate sensor is provided with a through hole, and a detection unit is disposed inside the through hole. The airflow rate is calculated based on the output voltage resulting from the temperature difference and the like caused in the detection unit by the air flowing through the through hole. A duct is provided with a concave portion so as to protrude from outside the duct toward the inside thereof. The airflow rate sensor is disposed in the duct so as to cover the concave portion, in which the through hole is in communication with the space in the concave portion. The concave portion has a bottom provided with an opening. Accordingly, an installation structure of a sensor for reliably sensing a flow rate and a projector apparatus having the same are provided.