Sanyo Electric Co., Ltd.

Toshimasa Kanbara

Taichi Yoshimura

Takeshi Fujisaki

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.

Installation structure of sensor and projector apparatus having the same

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.

Illuminating device, image display device, and lamp unit

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.

Temperature sensor mounting structure and video projector

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.

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Kishiwada, Japan

Toshimasa Kanbara