Abstract: Provided is vehicle seat with a seat cushion and a seat back, the vehicle seat comprising: a pair of cushion side frames; a duct extending from the seat cushion along a rear side of a cushion frame toward the seat back and connecting an air passage and a blower, the air passage being formed in at least one of the seat cushion and the seat back; and a side frame cover configured to cover at least part of the cushion side frame. The side frame cover includes a duct cover portion configured to cover part of the duct at the rear side of the cushion frame.

Abstract: [Task] It is to provide a projection type display apparatus which enhances the contrast performance while minimizing a reduction in the brightness by blocking a light beam which would decrease the contrast through the use of diaphragms provided in both of an illumination optical system and a projection lens. [Solution] A light source portion 1 and 2, a first lens array 4, a second lens array 5, and a superposition lens 7 constitute an illumination optical system. An illumination diaphragm 8 located in the vicinity 7 of the second lens array becomes a diaphragm aperture in a rectangular shape when being narrowed, wherein a side of the diaphragm aperture in the rectangular shape and longer side directions of the lens cells of the second lens array 5 are perpendicular or parallel to each other. A liquid crystal display device 17 modulates incident light. A projection lens 19 enlarges and projects modulation light.

Abstract: [Task] It is to provide a projection type display apparatus which enhances the contrast performance while minimizing a reduction in the brightness by blocking a light beam which would decrease the contrast through the use of diaphragms provided in both of an illumination optical system and a projection lens. [Solution] A light source portion 1 and 2, a first lens array 4, a second lens array 5, and a superposition lens 7 constitute an illumination optical system. An illumination diaphragm 8 located in the vicinity 7 of the second lens array becomes a diaphragm aperture in a rectangular shape when being narrowed, wherein a side of the diaphragm aperture in the rectangular shape and longer side directions of the lens cells of the second lens array 5 are perpendicular or parallel to each other. A liquid crystal display device 17 modulates incident light. A projection lens 19 enlarges and projects modulation light.