Back to results
US 7,621,644 B2Granted
Projector with exhaust fans having intersecting exhaust directions
AssigneeSanyo Electric Co., Ltd.
InventorsNorio Nakagawa, Toshihiro Saruwatari
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeSanyo Electric Co., Ltd.
InventorsNorio Nakagawa, Toshihiro Saruwatari
Estimating the term…
A liquid crystal projector device of the present invention includes a casing having disposed therein a lamp unit, an optical system for receiving light from the lamp unit to generate image light, and a power unit. An exhaust system for cooling an inside of the casing is attached to a side surface of the casing. The exhaust system includes a first exhaust fan and a second exhaust fan, which stand along the side surface of the casing. The first exhaust fan is placed toward the lamp unit, while the second exhaust fan is placed toward the power unit. Exhaust directions of both exhaust fans intersect each other.
A projector device comprising a casing having disposed therein a light source and an optical system for receiving light from the light source to generate image light, the casing having a wall surface having attached thereto an exhaust system for cooling an inside of the casing, the exhaust system comprising a first exhaust fan and a second exhaust fan, which stand along the wall surface of the casing, both exhaust fans being placed with the directions of their rotation axes intersecting each other so that their exhaust directions intersect each other, the first exhaust fan having an inlet direction thereof toward the light source while the second exhaust fan having an inlet direction thereof toward an area deviating from the light source, air discharged from both exhaust fans is mixed since the exhaust directions intersect each other.
Dependencies are inferred from the claim text.
Drawings are temporarily unavailable. Open the PDF at USPTO
From the US filing history. Foreign family members aren’t listed.
Details: fire preventing or extinguishing
Apparatus or arrangements for taking photographs or for projecting or viewing them
About 1 year 1 month of term left · ends 19 Nov 2027 (estimated)
The priority application Number 2005-209288 upon which this patent application is based is hereby incorporated by reference.
1. Field of the Invention
The present invention relates to a projector device adapted to guide light from a light source to an optical system to generate image light for magnification projection on a forward screen.
FIG. 1 is a perspective view of a liquid crystal projector device of the present invention;
FIG. 2 is a perspective view showing the liquid crystal projector device with an upper half case thereof removed therefrom;
FIG. 3 is an exploded perspective view showing the liquid crystal projector device with the upper half case removed therefrom;
The present invention embodied in a liquid crystal projector device will be specifically described below with reference to the drawings. In the description given below, the image projection direction of the liquid crystal projector device shown in FIG. 1 is defined as the forward direction, and right and left are defined by facing the front face of the liquid crystal projector device.
Overall Construction
As shown in FIG. 1, the liquid crystal projector device of the present invention includes a flat casing 1 including a lower half case 12 and an upper half case 11. A manipulation portion 15 including a plurality of manipulation buttons is disposed on a surface of the casing 1, while a projection window 13 is provided on the front face of the casing 1. A vent 14 for discharging the air in the casing 1 to the outside is provided on the right side wall of the casing 1.