Abstract: A projector includes a cooling fan that discharges cooling air toward a liquid crystal panel as a target to be cooled, a liquid crystal panel frame that holds the liquid crystal panel, and a turbulence generator that is disposed at an upstream-side end portion of the liquid crystal panel in relation to the cooling air, converts the cooling air into turbulence, and causes the turbulence to flow toward the liquid crystal panel, and the turbulence generator includes an inclined section having an inclined surface and a plate-shaped protruding section formed on the inclined surface and inclined by an inclination angle with respect to a direction in which the cooling air flows into the turbulence generator.

Abstract: A projector includes an exterior housing including an exhaust port and a cooling device provided in the exterior housing and configured to discharge the air, which has cooled a cooling target, to the outside of the exterior housing via the exhaust port. The exterior housing includes a partition member that partitions the exhaust port and forms a plurality of openings. The partition member includes projecting sections projecting from an end edge of at least one of the plurality of openings into the opening.

Abstract: A projector includes a circulation cooling device, a controller that controls the projector, and an exterior housing that accommodates the circulation cooling device and the controller and forms the exterior of the projector. The circulation cooling device includes a cooling fan that blows a cooling gas to an object to be cooled, a heat absorber that absorbs heat of the gas having cooled the object to be cooled, and a relay section that forms, along with the closed housing, a closed space and relays electrical connection between the cooling fan and the controller, and the relay section includes a double-sided substrate having an inner surface which faces the closed space and on which a connection member electrically connected to the cooling fan is arranged and an outer surface which faces away from the closed space and on which a connection member electrically connected to the controller is arranged.

Abstract: A cooling apparatus includes a cooling fan that has a rotating blade and a fan case accommodating the blade and delivers cooling air and a holder that holds the cooling fan. The holder has a first member and a second member that sandwich and support the cooling fan, and the first member and the second member are made of materials having physical properties different from each other and hence have natural frequencies different from each other.

Abstract: A projector includes: a light source; a light modulation device that modulates light emitted from the light source; an optical projection device that projects the light modulated by the light modulation device; a light path changing element (shift element) that is disposed between the light modulation device and the optical projection device and changes a light path of the light modulated by the light modulation device through fluctuation; and a cooling device that cools the light modulation device and the light path changing element (shift element).

Abstract: A projector includes a circulation cooling device, a controller that controls the projector, and an exterior housing that accommodates the circulation cooling device and the controller and forms the exterior of the projector. The circulation cooling device includes a cooling fan that blows a cooling gas to an object to be cooled, a heat absorber that absorbs heat of the gas having cooled the object to be cooled, and a relay section that forms, along with the closed housing, a closed space and relays electrical connection between the cooling fan and the controller, and the relay section includes a double-sided substrate having an inner surface which faces the closed space and on which a connection member electrically connected to the cooling fan is arranged and an outer surface which faces away from the closed space and on which a connection member electrically connected to the controller is arranged.

Abstract: A projector includes a cooling fan that discharges cooling air toward a liquid crystal panel as a target to be cooled, a liquid crystal panel frame that holds the liquid crystal panel, and a turbulence generator that is disposed at an upstream-side end portion of the liquid crystal panel in relation to the cooling air, converts the cooling air into turbulence, and causes the turbulence to flow toward the liquid crystal panel, and the turbulence generator includes an inclined section having an inclined surface and a plate-shaped protruding section formed on the inclined surface and inclined by an inclination angle with respect to a direction in which the cooling air flows into the turbulence generator.

Abstract: A projector (1) includes a light source device (2), a light modulating device (5) configured to modulate a light beam emitted from the light source device, a projection optical device (7) configured to project the light beam modulated by the light modulating device, and a flexible printed circuit board (6), one end of which is connected to the light modulating device (5). The light source device (2) includes a light emitting device mounted on the flexible printed circuit board (6). The flexible printed circuit board is bent, whereby the light source device is disposed in an emission position where the light source device (2) emits the light beam to the light modulating device (5).

Abstract: A projector includes a light source, a light control apparatus having a light shield portion that shields light emitted from the light source, the light control apparatus adjusting the amount of light that passes therethrough, an optical element that is disposed on the light exiting side of the light shield portion and optically converts light incident on the optical element, a cooling fan that sends cooling air, and a duct that guides the cooling air sent from the cooling fan to the light shield portion and the optical element which are the targets to be cooled, wherein the duct has a blowoff port off which the guided cooling air is blown toward each target to be cooled, and the light shield portion changes the amount of covered blowoff port in accordance with the amount of light that the light shield portion shields.

Abstract: A projector includes a light source unit, a light modulator that modulates light exited from the light source unit, a polarizer or a wave plate provided on the light modulator, a cooling unit that supplies cooling air to the light modulator, and a turbulent flow plate disposed between the light modulator and the polarizer or the wave plate in a path along which the cooling air from the cooling unit flows toward the light modulator, the turbulent flow plate having a fin that tapers from a base end toward a tip.

Abstract: A projector (1) includes a light source device (2), a light modulating device (5) that modulates a light beam emitted from the light source device (2), a projection optical device (7) that projects the light beam modulated by the light modulating device (5), a flexible printed circuit board (6), one end of which is connected to the light modulating device (5), and a housing (8) in which the light source device (2), the light modulating device (5), and the projection optical device (7) are housed. In a position in the housing (8) where the light modulating device (5) is disposed, a first insert-through section (8L1) for drawing around the flexible printed circuit (6) board to the outside (8L) of the housing (8) and a second insert-through section (8D1), through which a part of the light modulating device (5) is inserted, are formed.

Abstract: A projector includes an optical element and a cooling device configured to supply cooling air along the surface of the optical element. The cooling device supplies the cooling air in two supply directions crossing each other and extending from one edge to the other edge of two opposed edges of the optical element.

Abstract: A cooling apparatus includes a cooling fan that has a rotating blade and a fan case accommodating the blade and delivers cooling air and a holder that holds the cooling fan. The holder has a first member and a second member that sandwich and support the cooling fan, and the first member and the second member are made of materials having physical properties different from each other and hence have natural frequencies different from each other.

Abstract: A projector includes a light source unit, a light modulator that modulates light exited from the light source unit, a polarizer or a wave plate provided on the light modulator, a cooling unit that supplies cooling air to the light modulator, and a turbulent flow plate disposed between the light modulator and the polarizer or the wave plate in a path along which the cooling air from the cooling unit flows toward the light modulator, the turbulent flow plate having a fin that tapers from a base end toward a tip.

Abstract: A projector includes a light source unit, a light modulator that modulates light exited from the light source unit, a polarizer or a wave plate provided on a light incident side of the light modulator, a cooling unit that supplies cooling air to the light incident side of the light modulator, and a turbulent flow plate disposed between the light modulator and the polarizer or the wave plate in a path along which the cooling air from the cooling unit flows toward a light incident surface of the light modulator, the turbulent flow plate having a fin that tapers from a base end toward a tip.

Abstract: A projector includes a light source, a light control apparatus having a light shield portion that shields light emitted from the light source, the light control apparatus adjusting the amount of light that passes therethrough, an optical element that is disposed on the light exiting side of the light shield portion and optically converts light incident on the optical element, a cooling fan that sends cooling air, and a duct that guides the cooling air sent from the cooling fan to the light shield portion and the optical element which are the targets to be cooled, wherein the duct has a blowoff port off which the guided cooling air is blown toward each target to be cooled, and the light shield portion changes the amount of covered blowoff port in accordance with the amount of light that the light shield portion shields.

Abstract: A projector includes: a plurality of light modulating devices; a light combining optical device having a plurality of light incidence planes that faced a corresponding one of the light modulating devices, the light combining optical device configured to combine the color lights modulated by the plurality of light modulating devices; and fixing members each having a plate-like base in which an opening is formed, the fixing members configured to fix the light modulating devices to the light combining optical device, the light modulating devices are fixed to the fixing members in a state in which the light modulating devices are inserted in the openings.

Abstract: A projector (1) includes a light source device (2), a light modulating device (5) that modulates a light beam emitted from the light source device (2), a projection optical device (7) that projects the light beam modulated by the light modulating device (5), a flexible printed circuit board (6), one end of which is connected to the light modulating device (5), and a housing (8) in which the light source device (2), the light modulating device (5), and the projection optical device (7) are housed. In a position in the housing (8) where the light modulating device (5) is disposed, a first insert-through section (8L1) for drawing around the flexible printed circuit (6) board to the outside (8L) of the housing (8) and a second insert-through section (8D1), through which a part of the light modulating device (5) is inserted, are formed.

Abstract: A projector (1) includes a light source device (2), a light modulating device (5) configured to modulate a light beam emitted from the light source device, a projection optical device (7) configured to project the light beam modulated by the light modulating device, and a flexible printed circuit board (6), one end of which is connected to the light modulating device (5). The light source device (2) includes a light emitting device mounted on the flexible printed circuit board (6). The flexible printed circuit board is bent, whereby the light source device is disposed in an emission position where the light source device (2) emits the light beam to the light modulating device (5).

Abstract: An LED apparatus includes a base having thermal conductivity, an insulative substrate provided on one surface of the base and including electrodes provided on a surface of the substrate, at least one base-mounting area that is an exposed part of the base, exposed within a pass-through hole provided in the substrate, a plurality of LED elements mounted on the base in the base-mounting area and some of the LED elements in a unit electrically connected to the electrodes in series, a plurality of the units are electrically connected in parallel, and a frame disposed to surround the base-mounting area and configured to form a light-emitting area.