Patent ID: 8414133

Claim:
A projection display device comprising: a light source; a light modulating element which modulates light from the light source; a projection lens section to which the light modulated by the light modulating element is entered; a mirror section which reflects the light emitted from the projection lens section to reflect the light to the projection lens section side and directs the light to a projection plane; a main body cabinet which houses the projection lens section and the mirror section, the main body cabinet including a V-shaped concave groove that is concave toward an interior of the main body cabinet, the V-shaped concave groove including a first sloped portion and a second sloped portion that slopes in a direction of the light reflected by the mirror section; a projection port provided in the main body cabinet through which the light reflected by the mirror section passes to the projection plane, the projection port being provided in the first sloped portion of the V-shaped concave groove; and an operation section which displaces a lens of the projection lens section, wherein an optical path of the light passing through the projection port reflected by the mirror section is directed to pass over a part where the projection lens section is housed in the main body cabinet, and the operation section is disposed in a region in which the operation section does not hinder an optical path of the light through the projection port provided in the main body cabinet.