Abstract: A method for cooling a display assembly includes forcibly circulating gas about an airflow pathway extending within a housing and extending along opposing sides of an image assembly is provided. Ambient air is ingested into the housing through an intake, passed within the housing in a manner which provides thermal interaction with the circulating gas in said airflow pathway, and exhausted from the housing through an exhaust to change a temperature of the circulating gas.

Abstract: A method for cooling a display assembly includes forcibly circulating gas about an airflow pathway extending within a housing and extending along opposing sides of an image assembly is provided. Ambient air is ingested into the housing through an intake, passed within the housing in a manner which provides thermal interaction with the circulating gas in said airflow pathway, and exhausted from the housing through an exhaust to change a temperature of the circulating gas.

Abstract: A phosphor wheel includes: a substrate including a first principal surface and a second principal surface; a phosphor layer; and a heat dissipating member. The heat dissipating member includes: a projecting portion projecting toward one of the principal surfaces and including (i) a contact surface that contacts the one of the principal surfaces and (ii) a peripheral wall to which the contact surface serves as a bottom surface; and fins provided by cutting and raising regions in a peripheral region of the heat dissipating member excluding a central portion of the heat dissipating member. The projecting portion includes, in the peripheral wall, through-holes provided for ventilation. The projecting portion contacts the substrate via the contact surface to secure a certain distance between the substrate and the heat dissipating member and conduct heat in the substrate to the peripheral region of the heat dissipating member.

Abstract: One aspect of a projector according to the present disclosure includes an exterior housing, a first fan, and a first circulator. The exterior housing has a first wall portion, a second wall portion located in a direction opposite to a first direction with respect to the first wall portion, and a third wall portion facing a second direction. The second wall portion has an introduction port, and the third wall portion has a discharge port. The first circulator connects the introduction port and a first suction port of the first fan to each other. A cooling target is located in the first circulator in a direction intersecting with a direction in which air flows from the introduction port to the first suction port.

Abstract: An image projection device including: an analysis unit configured to compute a functional state of one or more devices included in the image projection device based on sensor information acquired from one or more sensors; a determination unit to determine whether or not maintenance of the devices is necessary based on the functional state of the devices; and a notification control unit to present guidance information that prompts for implementation of maintenance of the devices to a user through a notification unit at a timing when it is determined by the determination unit that maintenance is necessary.

Abstract: A light source system includes an excitation light source, a fluorescent plate that emits fluorescence when exposed to the excitation light from the excitation light source, and a compartment storing the fluorescent plate. The compartment has a heat-receiving section and a heat-dissipation section thermally connected to each other. The heat-receiving section is located opposite a fluorescence light output side of the fluorescent plate, in the compartment. The heat-dissipation section is outside the compartment.

Abstract: A projector comprises a casing, a projection lens module and a light emitting module. The casing comprises a first air inlet and an air outlet. The projection lens module is disposed in the casing and adjacent to the first air inlet. The light emitting module is disposed in the casing and adjacent to the air outlet. The casing comprises a rear cover. The rear cover comprises a second air inlet, the second air inlet corresponds to the light emitting module. A first airflow flows into the casing from the first air inlet to dissipate heat from the projection lens module and the light emitting module, and then flows out of the air outlet. A second airflow flows into the casing from the second air inlet to dissipate heat from the light emitting module, and then flows out of the air outlet.

Abstract: A phosphor wheel apparatus includes: a substrate made of a heat conductive material having a first light reflectance, the substrate having first and second surfaces facing each other; a phosphor layer disposed on the first surface of the substrate; an adhesive layer bonding the substrate and the phosphor layer to each other; and a plurality of fins disposed on the second surface of the substrate, wherein the adhesive layer includes an adhesive having first thermal conductivity and filler particles, and the filler particles have second thermal conductivity higher than the first thermal conductivity, and have a second light reflectance higher than the first light reflectance.

Abstract: A projector includes a cooler configured to cool a cooling target based on transformation of a refrigerant into gas. A refrigerant generator includes a rotating moisture absorbing and releasing member, a first blower configured to send air to a portion of the member located in a first region, a heat exchanger, a heater configured to heat a portion of the member located in a second region, and a second blower configured to send, to the heat exchanger, air around the heated portion in the member. The heat exchanger includes a housing including an internal space into which the air sent by the second blower flows and a plurality of channels disposed in the internal space. Insides of the channels are separated from the internal space. Cooling air for cooling the air in the internal space via the channels flow through the insides of the channels.

Abstract: A liquid cooled heat dissipation module includes a housing and at least one flow channel. The housing includes a chamber, and the at least one flow channel is located in the chamber. The housing includes an upper plate, a lower plate, and a plurality of annular wall portions. Two ends of each of the annular wall portions are respectively connected to the upper plate and the lower plate. The annular wall portions respectively form a plurality of through-holes between the upper plate and the lower plate, and the through-holes penetrate through the upper plate and the lower plate. The at least one flow channel is located between two adjacent annular wall portions. In addition, a projection device is also provided.

Abstract: A projection device is disclosed. The projection device includes an air inlet, an air outlet, an optical engine, a heat sink, a fan and a combiner. A first passage is arranged between the air inlet and the air outlet for passing an air flow. The optical engine includes a light source and an imaging lens set outputting a projection light beam. The heat sink is connected to the optical engine, and a part of the heat sink is arranged in the first passage. The fan is arranged in the first passage. The combiner receives the projection light beam. The projection light beam moves in a propagating direction opposite to the entry direction.

Abstract: A projection device includes a light source module for emitting an illumination beam, an optical engine module for receiving the illumination beam and forming an image beam, and a projection lens for receiving and projecting the image beam to an outside of the projection device. The optical engine module includes first and second shells coupled in a first direction, an elastic sealing member and electronic components. The shells form an accommodation space in which the electronic components are disposed. The elastic sealing member has opposite first and second surfaces. The first surface has an engagement groove in which a portion of the first shell is engaged. The second shell abuts against the second surface. Signal transmission components of the electronic components are disposed through the elastic sealing member to pass through the shells.

Abstract: An electronic device includes an electronic device main body and an accommodation apparatus accommodating the electronic device main body. The accommodation apparatus includes a first enclosure forming an internal space and having a first intake port and a first discharge port, a partitioner partitioning the internal space into a first space and a second space, and a first intake fan sending the air into the first space. The electronic device main body includes a second enclosure having a second intake port and a second discharge port, and a second intake fan sucking air into the electronic device main body. The second intake port is disposed in the first space. The second discharge port is disposed in the second space. The amount of air sent by the first intake fan into the first space is greater than the amount of air sucked by the second intake fan into the second enclosure.

Abstract: A projector includes a light source device and a cooling device. The light source device includes a first light source having a plurality of first light emitting elements, a second light source having a plurality of second light emitting elements, and a light combining member adapted to combine light. The cooling device includes a first cooling section adapted to cool the first light emitting elements with a liquid refrigerant so that a first temperature difference increases in a first direction, and a second cooling section adapted to cool the second light emitting elements with a liquid refrigerant so that a second temperature difference increases in a second direction. The first and second light sources are arranged so that an illuminance distribution caused by the first temperature difference and an illuminance distribution caused by the second temperature difference are canceled out in the light combining member.

Abstract: [Object] To provide a projector-type display apparatus with ease of maintenance. [Solving Means] According to the present technology, a projector-type display apparatus includes an optical-system-for-projecting, a housing, a fan, an air-filter, and a filter-cover. The housing includes an air-inlet-port, and houses the optical-system-for-projecting. The fan is housed in the housing, air from the air-inlet-port flowing into the fan. The air-filter is attachable to and detachable from the housing, and covers the air-inlet-port. The filter-cover is attachable to and detachable from the air-filter.

Abstract: Disclosed are an apparatus and method for controlling a laser projector to operate. The method includes: obtaining a plurality of operating parameters of the laser projector in operation; comparing each of obtained operating parameters with a preset parameter, and judging whether the laser projector fails, wherein the preset parameters are parameters of the laser projector which is operating normally; and determining failure information of the laser projector according to a result of a comparison if it is judged that the failure occurs.

Abstract: A projection display device includes a first substrate on which a red light source is mounted, a second substrate on which a green light source is mounted, a third substrate on which a blue light source is mounted, a housing to which the first through third substrates are attached, an optical member accommodated inside the housing, and a light modulating element; light emitted inside the housing from the red light source, the green light source, and the blue light source being distributed by the optical member, the distributed light being converted to a prescribed display image by the light modulating element, and the light being projected outside the housing. The first through third substrates are made of metal or of filler-containing plastic compounded with a filler having high thermal conductivity, and the housing is made of metal or a filler-containing plastic compounded a filler having high thermal conductivity.

Abstract: An image display apparatus includes a laser light source, a light modulator, a first sensor, a second sensor, a third sensor, and circuitry. The light modulator generates an image based on light from the laser light source. The first sensor measures a first temperature in a vicinity of an air inlet of a housing of the image display apparatus. The second sensor measures a second temperature associated with the laser light source. The third sensor measures a third temperature associated with the light modulator. The circuitry is configured to control output of the laser light source based on at least one of the first, second, or third temperatures.

Abstract: A projector includes a projector main body disposed in an attic above a ceiling plate and configured to project image light on a screen located in a room interior below the ceiling plate, a cover member set on the ceiling plate and configured to cover the projector main body, and a projection window provided in the cover member and configured to transmit the image light projected from the projector main body to the room interior side. The projection window is disposed further on the attic side than the ceiling plate to tilt with respect to the ceiling plate.

Abstract: A cooling device for an emitting module of a projector includes a base, a guiding portion installed on the base, and a latch portion installed on the base. The guiding portion includes a positioning plate secured on one side of the base and a guiding plate secured on the other side of the base. The positioning plate and the guiding plate are foldable relative to the base to be connected with each other and so define an inlet channel. Air flow can pass through the inlet channel to cool the emitting module. The latch portion is configured to form an outlet in different directions to adjust a direction and strength of the air flow.

Abstract: There is provided a image projection apparatus including an image generation unit for generating an image by using light emitted from a light source, comprising: a movable unit configured to hold the image generation unit and to be able to change a position of the image generation unit; and a drive unit configured to drive the movable unit to move, wherein the movable unit is disposed to move horizontally.

Abstract: A pico projector includes a housing, a lens, a light engine, a control module and a central processing module. The housing includes a main body and a cover. The lens is disposed in the housing. The light engine is disposed in the housing and configured to produce light including image signals and project the light through the lens. The control module is configured to provide a control signal. The central processing module is disposed in the housing and configured to rotate or move the cover with respect to the main body according to the control signal so as to create an opening for enhancing heat dissipation of the interior of the housing.

Abstract: A light source device includes heat releasing fins for cooling a blue light emitting diode (LED), a red LED, and a green LED, respectively, which are located next to each other in a direction in which a cooling fan blows air. A space formed between an upper surface of an optical unit and the heat releasing fins enable cooling air of the cooling fan to pass through the space.

Abstract: A projector includes a projector body having a light-permissive aperture, a plurality of lens modules, a lens disassembly sensing module, a light-emitting module and a control module. The lens modules are individually provided for an assembly to the light-permissive aperture. The lens disassembly sensing module is disposed in the projector body and corresponding to the light-permissive aperture. The light-emitting module is disposed in the projector body and configured to emit lights toward the light-permissive aperture. The control module is signally connected to the lens disassembly sensing module and the light-emitting module. The control module is configured to sense, through the lens disassembly sensing module, whether any one of lens modules is being disassembled from the light-permissive aperture and modulate a lighting intensity of the light-emitting module when a lens module being disassembled from the light-permissive aperture is sensed.

Abstract: A light source housing to which a light source lamp having a light emission tube and a reflector is attached includes a pair of flow paths bifurcating onto upper and lower sides of the light emission tube from an air intake port for introducing a cooling air; a flow path open and close unit that slides in a direction of the gravitational force so as to open the flow path on the upper side of the light emission tube and close the flow path on the lower side of the light emission tube; and an air outtake port that outtakes the cooling air introduced into the reflector from the flow path on the upper side of the light emission tube to an outside of the reflector.

Abstract: A projector includes: an external housing that includes a projection opening and an exhaust port arranged on the same side as the projection opening; an axial-flow fan that causes air to flow therein with the rotation of blades and delivers the air flowing therein; and a plurality of slats that are arranged at the exhaust port and guide the air delivered from the axial-flow fan to an outside. The plurality of slats include an elongated slat that is disposed in, among four exhaust areas arranged side by side in the exhaust port, one of the two exhaust areas on the side close to the projection opening and whose length in a direction in which the air is guided corresponding to a rotational direction of the blade is longer than that of the slats disposed in the other areas.

Abstract: A projector includes a case, an optical engine, a heat sink, a circuit board, and a fan. The case includes two sidewalls, and each sidewall defines an air hole. The optical engine is received in the case. The heat sink is positioned on the optical engine. The circuit board is positioned between the heat sink and one of the sidewalls. The fan is received in the case. The air holes of the two sidewalls and the fan form a dissipating passage. The heat sink and the circuit board are positioned in the dissipating passage.

Abstract: An image projector in a case, having a light engine, a circuit board, a heat sink assembly, and a fan assembly, has one or more heat sinks and heat pipes shaped to gather heat from all heat-generating components within the projector and a single air passage to receive the heated air combined from all components, allowing the employment of a single fan module in sucking cool air from the exterior and exhausting heated air through the single air passage.

Abstract: A light source device includes a reflector that reflects light received from an arc tube toward an illumination receiving area, and a housing that houses the reflector to form a space through which cooling air for cooling the arc tube flows. The housing has three delivery ports disposed side by side as ports from each of which the cooling air is delivered into the space. A first delivery port included in the three delivery ports is located such that the center of the first delivery port is disposed substantially at a position aligned with the optical axis of the arc tube. Second and third delivery ports included in the three delivery ports are disposed in the vicinity of one and the other sides of the first delivery port, respectively, with respect to the optical axis.

Abstract: An image projection apparatus includes a light source, light from which is used to form an image to be projected, a first flow path, a control unit configured to control a light emission from the light source, an electrical power stabilizing unit configured to stabilize an electrical power to be supplied to the light source, and an electrical power source unit configured to supply the electrical power to at least one of the control unit and the electrical power stabilizing unit. One or both of the electrical power source unit and the electrical power stabilizing unit is/are divided into a plurality of boards. The light source is arranged on a normal line of a surface of any of the plurality of boards. The plurality of boards configure surfaces of the first flow path except a surface nearest to the light source.

Abstract: A projection display device projects light modulated based on a video signal. The projection display device includes a light source, a first fan for cooling the light source, and a second fan different from the first fan. The number of revolutions of the first fan is increased or decreased with the increase or decrease of the output of the light source. The number of revolutions of the second fan is decreased when the number of revolutions of the first fan is increased, and increased when the number of revolutions of the first fan is decreased.

Abstract: A heat dissipation device of a light engine for a projector has a housing, a fan module, a light engine and a heat sink. The light engine is positioned in the housing and connected to the heat sink. The heat sink is positioned out of the housing. The housing has a fan-enclosed flow channel attached on an outer surface of the housing. The fan module is guided by the fan-enclosed flow channel to the heat sink to enhance heat dissipation efficiency of the light engine for the projector.

Abstract: An image projection apparatus includes a light source; an intake port to take in low-temperature air into the image projection apparatus; an exhaust port to exhaust air from the image projection apparatus; a ventilation unit to generate an air flow from the intake port to the exhaust port; a first flow path for hot-air exhaust having increased its temperature by taking heat from the light source; a second flow path for a part of the low-temperature air, taken from the intake port; and a mixing unit to mix the hot-air exhaust flowing from the first flow path and the low-temperature air flowing from the second flow path. The air mixed and exhausted from the mixing unit converges with another part of the low-temperature air, flowing from a third flow path set outside the mixing unit, at a space between the mixing unit and the exhaust port.

Abstract: A projection apparatus includes an optical engine base, a light source, a light valve, a lens module, and a fan. The light source is disposed at the optical engine base for emitting an illumination beam. The light valve is disposed at the optical engine base for converting the illumination beam into an image beam. The lens module is disposed at the optical engine base and includes a lens barrel and a lens assembly disposed in the lens barrel for converting the image beam into a projection beam. The fan is disposed at the optical engine base, and adjacent to the lens module. The fan is used for providing an air flow to cool the lens module.

Abstract: An image display device includes a light source; a power supply section that supplies power to light source; a cooling fan that cools the light source; an input section; a drive section that supplies a voltage to cooling fan; a control section that controls drive section and power supply section. The control section sets a first power value for the output of the power supply section and also a first voltage value for the output of the drive section. The control section measures a time at which the light source has been lighted. If the measured value exceeds a threshold, the control section gradually increases the output of the power supply section up to a second power value that is greater than the first voltage value over a predetermined time.

Abstract: Provided is a projection type display device that has dust-proof and coolable optical components. According to an aspect of the present invention, the display device includes a case, a dust-proof structure that has a plurality of walls surrounding a plurality of optical components to prevent dust, and which is located in the case, and suction ports (7b and 7b?) formed in the case and configured to suck cooling air along one wall of the dust-proof structure to cool the optical components. The suction ports are separated into first suction port (7b) and second suction port (7b?) with a position of one wall set as a reference. First suction port (7b) is located to blow the cooling air to the dust-proof structure, while second suction port (7b?) is located to prevent direct blowing of the cooling air to the dust-proof structure. An area of first suction port (7b) is smaller than that of second suction port (7b?).

Abstract: The projector according to an exemplary embodiment includes an optical system which forms, expands, and projects the image, and includes at least one light source; a light source dissipation unit for dissipating heat generated by the light source; a plurality of circuit boards for operating the projector; an intake unit having an intake opening where external air is received; an exhaust unit having an exhaust opening where the received air is expelled; and a flow path dividing unit which divides a cooling flow path formed between the intake opening and the exhaust opening into an upper cooling flow path and a lower cooling flow path, wherein the light source dissipation unit is placed on the upper cooling flow path and at least one of the plurality of circuit boards is placed on the lower cooling flow path.

Abstract: A heat dissipation structure of a projection device includes at least one fan, at least one light emitting unit, at least one air guide, and a sensing device. The fan with an outlet is used for providing a cooling flow. The light emitting unit is used for providing a light beam. The air guide is dismountable disposed in front of the outlet. The air guide is used for guiding the cooling flow to a hot spot of the light emitting unit. The sensing device is used for sensing a projection direction of the projection device.

Abstract: An image projection apparatus for projecting an image on a projection plane includes a light source; a light source housing to encase the light source; a ventilation unit to send air to the light source; and a flow path set between the light source housing and a side face of the image projection apparatus. A part of the air sent to the light source, by using the ventilation unit, is flowed into the flow path.

Abstract: According to an embodiment, an image projection apparatus includes a light source unit, an image forming unit that forms an image using light from the light source unit, and a heat releasing unit that is provided to the image forming unit and releases heat from the image forming unit, and projecting the image formed by the image forming unit. The image projection apparatus includes a facing member that faces an installation surface on which a main body of the apparatus is installed; and a foot that allows the facing member to support the image forming unit. The heat releasing unit is provided between the facing member and the image forming unit.

Abstract: According to an embodiment, an image projection apparatus includes a light source unit, an image forming unit that forms an image using light from the light source unit, and a heat releasing unit that is provided to the image forming unit and releases heat from the image forming unit, and projecting the image formed by the image forming unit. The image projection apparatus includes a facing member that faces an installation surface on which a main body of the apparatus is installed; and a foot that allows the facing member to support the image forming unit. The heat releasing unit is provided between the facing member and the image forming unit.

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: An image projection apparatus for projecting an image using light includes a light source configured to emit the light; and an operating unit configured to allow a user to operate the image projection apparatus, the operating unit being disposed above the light source when viewed from a placement surface on which a main body of the image projection apparatus is placed. The image projection apparatus also includes a first flow path in which air flows through the light source; and a second flow path different from the first flow path, the second flow path being formed between the light source and the operating unit.

Abstract: An image projection apparatus includes: a light source; an exhaust fan having a rotary shaft provided with at least one blade, the rotary shaft being rotated to exhaust air inside the apparatus to the outside of the apparatus; a guide having a sloped face that is sloped toward the exhaust fan, the sloped face having a first side surface facing the light source and a second side surface provided opposite of the first side surface; a first flow path, defined by the first side surface of the guide, to guide air heated by the light source toward the rotary shaft of the exhaust fan; and a second flow path, defined by the second side surface of the guide, to guide air having temperature lower than temperature of the air heated by the light source, toward the rotary shaft of the exhaust fan.

Abstract: An image projection apparatus for projecting an image using light includes a light source configured to emit the light; and an operating unit configured to allow a user to operate the image projection apparatus, the operating unit being disposed above the light source when viewed from a placement surface on which a main body of the image projection apparatus is placed. The image projection apparatus also includes a first flow path in which air flows through the light source; and a second flow path different from the first flow path, the second flow path being formed between the light source and the operating unit.

Abstract: An image projection apparatus includes: a light source; an exhaust fan having a rotary shaft provided with at least one blade, the rotary shaft being rotated to exhaust air inside the apparatus to the outside of the apparatus; a guide having a sloped face that is sloped toward the exhaust fan, the sloped face having a first side surface facing the light source and a second side surface provided opposite of the first side surface; a first flow path, defined by the first side surface of the guide, to guide air heated by the light source toward the rotary shaft of the exhaust fan; and a second flow path, defined by the second side surface of the guide, to guide air having temperature lower than temperature of the air heated by the light source, toward the rotary shaft of the exhaust fan.

Abstract: A color wheel module and a projection apparatus are provided, wherein the color wheel module includes a color wheel, a cover and a flow detour duct. The cover shades the color wheel. The flow detour duct is communicated with the cover and has an airflow inlet and an airflow outlet. The rotating color wheel is configured to drive airflow into the flow detour duct from the airflow inlet, and cause the airflow through the color wheel and then discharged from the airflow outlet.

Abstract: A projector includes: an external case provided with an opening through which light passes; a projection system disposed within an inside space of the external case, wherein the projection system includes a reflection member having a reflection surface capable of reflecting light received from a light source device to guide the light toward the opening, and projects the light to the outside of the external case via the opening; and a detection unit which detects a foreign material existing on the optical path of the light in the area of light exit of the opening.

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: An exhaust port shutter apparatus which is attached to an exhaust port of a projector, includes: a guide section in which a first guide groove is provided; louver boards each having a turning shaft pin, the louver boards in which each turning shaft pin is formed so as to have a length which allows the turning shaft pin to pass through the first guide groove and project to the outside of the guide section; and a cam roller that has a cam groove on a peripheral surface thereof, the cam groove into which each turning shaft pin fits, the cam roller that can reciprocate, by rotation thereof, each turning shaft pin by the cam groove along the first guide groove in a first direction, wherein the louver boards are rotated at a necessary angle as a result of the cam roller being rotated and open and close the exhaust port.