Abstract: A projector according to the present disclosure includes: a light source unit; an image forming portion including a light modulation panel; a panel fan configured to flow an air flow to the light modulation panel; an image forming unit including the image forming portion and the panel fan that are housed in a case; a projection optical unit configured to project the image light generated by the image forming portion; and a vapor chamber provided at the light modulation panel, the vapor chamber including a heat receiving portion that receives heat generated in the light modulation panel and a heat dissipating portion that dissipates the heat received by the heat receiving portion, the vapor chamber being configured to vaporize a liquid refrigerant by the heat from the heat receiving portion and condense the refrigerant by the heat dissipation from the heat dissipating portion.

Abstract: A projector according to the present disclosure includes: a light source unit; an image forming portion including a light modulation panel; a projection optical unit; a panel fan configured to flow an air flow to the light modulation panel; a first heat exchanger; an image forming unit housing the image forming portion, the first heat exchanger, and the panel fan arranged in order in a case thereof; a second heat exchanger; an exterior housing housing at least the light source unit, the image forming unit and the second heat exchanger to constitute an exterior. The light source unit is disposed on one side of a first direction with respect to the image forming unit in the exterior housing, and the second heat exchanger is disposed on the other side of the first direction with respect to the image forming unit in the exterior housing.

Abstract: A transmissive liquid crystal panel includes a pixel region where a plurality of pixels are arrayed, a liquid crystal layer configured to modulate light for each of the pixels, an incident section configured to make the light incident on the liquid crystal layer, an emission section configured to emit, as image light, the light modulated by the liquid crystal layer, and a vapor chamber including an opening section corresponding to the pixel region, a heat receiving section around the opening section, and a heat radiating section configured to radiate heat received by heat receiving section, the vapor chamber vaporizing, with the heat received, a coolant in a liquid phase encapsulated on an inside of the vapor chamber and radiating, with the heat radiating section, heat of the coolant in a gas phase to thereby condense the coolant in the gas phase into the coolant in the liquid phase.

Abstract: A wavelength conversion device according to the present disclosure includes a wheel substrate, a phosphor layer formed on the wheel substrate, and a cooling fin unit disposed on the wheel substrate. The cooling fin unit has a base part to be bonded to the wheel substrate. A surface of the wheel substrate includes a first area corresponding to the phosphor layer, and a second area located closer to the central axis than the first area, the surface of the wheel substrate and a surface at the wheel substrate side of the base part are separated from each other to form a space between the wheel substrate and the base part, and a coupling part configured to thermally couple the surface of the wheel substrate and the surface at the wheel substrate side of the base part is disposed in at least the second area of the second surface.

Abstract: A light modulation device having a pixel arrangement region in which a plurality of pixels are arranged includes a first substrate, a second substrate disposed to be opposed to the first substrate via a liquid crystal layer, and a cooling member disposed on the opposite side of the first substrate with respect to the second substrate and thermally connected to the second substrate. The cooling member includes a hollow space in which working fluid is encapsulated and changes the working fluid in a liquid phase to the working fluid in a gas phase to cool the liquid crystal layer via the second substrate.

Abstract: A wavelength conversion device includes a rotating device, a substrate rotated by the rotating device, a wavelength conversion element, and a first cooling device including, on an inside, a space in which working fluid is encapsulated, the first cooling device cooling the wavelength conversion element. The first cooling device is disposed in a position corresponding to the wavelength conversion element. The space extends from an outer edge side of the substrate to a rotation axis side. The first cooling device includes an evaporator and a condenser which are provided in the space. The evaporator includes a liquid retaining part configured to retain the working fluid in a liquid phase. The liquid retaining part is provided at the outer edge side in the space and disposed in the position corresponding to the wavelength conversion element.

Abstract: A wavelength conversion device includes a rotating device, a substrate rotated by the rotating device, a wavelength conversion element, and a first cooling device including, on an inside, a space in which working fluid is encapsulated, the first cooling device cooling the wavelength conversion element. The first cooling device is disposed in a position corresponding to the wavelength conversion element. The space extends from an outer edge side of the substrate to a rotation axis side. The first cooling device includes an evaporator and a condenser which are provided in the space. The evaporator includes a liquid retaining part configured to retain the working fluid in a liquid phase. The liquid retaining part is provided at the outer edge side in the space and disposed in the position corresponding to the wavelength conversion element.

Abstract: A sound absorber includes a side surface section (a first wall section) in which a plurality of first holes are provided, the side surface section including a first surface and a second surface, a thin film stuck to the first surface of the side surface section, a partition wall (a second wall section) opposed to the second surface and provided in a position separated from the second surface, at least one second hole being provided in the partition wall, and a porous material provided to be opposed to the second wall section in a position separated from the partition wall.

Abstract: A projector includes a light source, a light modulator configured to modulate light emitted from the light source, an optical projection device configured to project the modulated light, a light path changer between the light modulator and the optical projection device and on which the modulated light is incident, and a cooler that cools the light modulator and the light path changer. The light path changer includes an optical member to change the light path of the incident light and a first fluctuation member. The first fluctuation member includes a permanent magnet, a coil, and a coil holder holding the coil, and fluctuates the optical member by supplying power to the coil. The cooler includes a fan and a duct to deliver cooling air toward the light path changer. The duct includes a sending port that faces the coil holder and flows the cooling air toward the light path changer.

Abstract: In a projection-type display apparatus, a polarization converter, a light-incident-side polarizer, a first liquid crystal device, a first light-exiting-side polarizer, and a retardation film are arranged along the optical path from a light source section to a projection system. The light-incident-side polarizer is a wire grid polarizer including a wire grid integrally provided on the light exiting surface of the polarization converter, and the light-incident-side polarizer and the polarization converter form a single optical part. The first light-exiting-side polarizer is a wire grid polarizer including a wire grid integrally provided on the light exiting surface of the first liquid crystal device, and the first light-exiting-side polarizer and the first liquid crystal device form a single optical part.

Abstract: A wavelength conversion device includes a rotating device, a substrate rotated by the rotating device, a wavelength conversion element, and a first cooling device including, on an inside, a space in which working fluid is encapsulated, the first cooling device cooling the wavelength conversion element. The first cooling device is disposed in a position corresponding to the wavelength conversion element. The space extends from an outer edge side of the substrate to a rotation axis side. The first cooling device includes an evaporator and a condenser which are provided in the space. The evaporator includes a liquid retaining part configured to retain the working fluid in a liquid phase. The liquid retaining part is provided at the outer edge side in the space and disposed in the position corresponding to the wavelength conversion element.

Abstract: A projector includes a light source, a light modulator configured to modulate light emitted from the light source, an optical projection device configured to project the modulated light, a light path changer between the light modulator and the optical projection device and on which the modulated light is incident, and a cooler that cools the light modulator and the light path changer. The light path changer includes an optical member to change the light path of the incident light and a first fluctuation member. The first fluctuation member includes a permanent magnet, a coil, and a coil holder holding the coil, and fluctuates the optical member by supplying power to the coil. The cooler includes a fan and a duct to deliver cooling air toward the light path changer. The duct includes a sending port that faces the coil holder and flows the cooling air toward the light path changer.

Abstract: A projector includes a light source, a light modulator configured to modulate light emitted from the light source, an optical projection device configured to project the light modulated by the light modulator, a light path changer disposed between the light modulator and the optical projection device and on which the light modulated by the light modulator is incident, the light path changer changing a light path of the incident light through fluctuation, and a cooler cooling the light modulator and the light path changer.

Abstract: In a projection-type display apparatus, a polarization converter, a light-incident-side polarizer, a first liquid crystal device, a first light-exiting-side polarizer, and a retardation film are arranged along the optical path from a light source section to a projection system. The light-incident-side polarizer is a wire grid polarizer including a wire grid integrally provided on the light exiting surface of the polarization converter, and the light-incident-side polarizer and the polarization converter form a single optical part. The first light-exiting-side polarizer is a wire grid polarizer including a wire grid integrally provided on the light exiting surface of the first liquid crystal device, and the first light-exiting-side polarizer and the first liquid crystal device form a single optical part.

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 light source, a light modulator configured to modulate light emitted from the light source, an optical projection device configured to project the light modulated by the light modulator, a light path changer disposed between the light modulator and the optical projection device and on which the light modulated by the light modulator is incident, the light path changer changing a light path of the incident light through fluctuation, and a cooler cooling the light modulator and the light path changer.

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 an optical element (e.g., liquid crystal panels as light modulation element) as a cooling target, a blast fan (a suction fan) adapted to feed air (outside air) for cooling, a duct adapted to make the air by the blast fan flow, and having an exhaust port (ejection ports) opposed to the optical element, and a furry member provided to an inside wall of the duct.

Abstract: A sound absorber includes a side surface section (a first wall section) in which a plurality of first holes are provided, the side surface section including a first surface and a second surface, a thin film stuck to the first surface of the side surface section, a partition wall (a second wall section) opposed to the second surface and provided in a position separated from the second surface, at least one second hole being provided in the partition wall, and a porous material provided to be opposed to the second wall section in a position separated from the partition wall.

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.