| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 353054000 | Liquid coolant | 20 |
| 20090009727 | PROJECTION IMAGE DISPLAY APPARATUS - A light source disposed in a projector is cooled by use of a coolant. A cooling unit is disposed in a region that is spatially separated from at least an optical unit and an electrical circuit unit. In addition, piping between the cooling unit and a cooling member is separated from wiring from the electrical circuit unit. | 01-08-2009 |
| 20090195756 | PORTABLE PROJECTOR USING AN LED AND RELATED HEAT DISSIPATION SYSTEM - A portable projector with a heat dissipation system, includes a housing and two LED light sources located in the housing. Each of the LED light sources includes a circuit aboard, an LED device mounted on the circuit aboard and a heat pipe. The heat pipe has an evaporating section thermally contacting the circuit board, and a condensing section. A fin set thermally contacts with the condensing section of the heat pipe for dissipating heat therefrom. The fin set of one LED light source is located behind the evaporating section of the heat pipe of the other light source and closely adjacent to a wall of the housing. | 08-06-2009 |
| 20090237619 | LIQUID-COOLING DEVICE AND PROJECTOR - In at least one embodiment of the disclosure, a liquid-cooling device to cool an optical element in a projector includes an optical element holding member configured to allow a flow of a cooling liquid therein and to hold the optical element so as to transfer heat to the cooling liquid. A liquid pumping unit is configured to circulate the cooling liquid. Liquid circulation members are configured to connect the optical element holding member and the liquid pumping unit and to define a flow channel of the cooling liquid. A thermoelectric conversion element has a heat-absorbing surface and a heat-radiating surface. The thermoelectric conversion element is connected to the liquid-cooling device to transfer the heat from the cooling liquid to the heat-absorbing surface. | 09-24-2009 |
| 20100045940 | PROJECTOR AND LIGHT SOURCE APPARATUS - A projector includes: a light source unit configured to emit light; a light source heat absorber configured to cause coolant to absorb heat from the light source unit; an ejector pump configured to allow passage of the coolant having absorbed the heat in the light source heat absorber; a radiator configured to radiate the heat of the coolant flowed out from the ejector pump; an evaporator configured to cool the coolant stored in the evaporator by evaporating the coolant; and a heat source other than the light source unit, wherein the ejector pump decompress the interior of the evaporator by a pressure drop due to the passage of the coolant having absorbed the heat in the light source heat absorber, and heat from the heat sources other than the light source unit is absorbed by the coolant cooled by the evaporator. | 02-25-2010 |
| 20100073642 | LIGHT SOURCE APPARATUS AND PROJECTOR - Provided is a light source apparatus for illuminating an illumination area via an illumination optical part, including a plurality of light sources for emitting illumination light; one heat-absorbing member for absorbing heat which the plurality of light sources generates; a heat-radiating part for radiating the heat; and a heat-transporting part thermally connected to the heat-absorbing member and the heat-radiating part; wherein the heat-transporting part is formed of a tube member containing a refrigerant for transmitting the heat and is provided at a position shifted from an irradiation position of the illumination light. | 03-25-2010 |
| 20100118279 | PROJECTOR APPARATUS - The present invention provides a projector apparatus capable of ensuring stable operation, which is configured to efficiently cool an optical device by circulating air cooled by a cooling part of a refrigeration unit, and further to prevent moisture resulting from evaporation of dew adhered to the cooling part from adversely affecting the optical device when stopping the operation of the refrigeration unit. The optical chamber and the cooling chamber are enclosed respectively by adiabatic walls, the cooling chamber and the optical chamber are connected to each other through a cold air inlet port and a cold air outlet port, and the cold air inlet port and the cold air outlet port are provided with opening and closing mechanisms. In a cooling operation mode, the optical device is cooled with cold air by opening the opening and closing mechanisms, and upon stoppage of the cooling operation, the opening and closing mechanisms are closed to prevent the inflow of the moisture in the cooling chamber to the optical chamber. | 05-13-2010 |
| 20100245778 | PROJECTOR - A projector includes: a liquid-cooling device configured to cool down a cooling target using cooling liquid, a liquid storage unit including a storage unit body that temporarily stores cooling liquid therein; and an outflow portion that connects the inside and outside of the storage unit body and allows the cooling liquid stored in the storage unit body to flow out to the outside, and the liquid storage unit is disposed in such a manner that the cooling liquid flows out of the outflow portion in a direction substantially orthogonal to a projection direction of an image from the projector and substantially parallel to a horizontal plane. | 09-30-2010 |
| 20100245779 | PROJECTOR - A projector includes a liquid-cooling device configured to cool down an optical element, an optical element holding member that is constructed to allow cooling liquid to flow in and out and holds the optical element; a liquid pumping unit that circulate cooling liquid; a liquid storage unit that is constructed to allow cooling liquid to flow in and out and temporarily stores cooling liquid therein; and a plurality of liquid circulation members that connect the optical element holding member, the liquid pumping unit, and the liquid storage unit and define a flow channel of the cooling liquid, and the liquid pumping unit, the liquid storage unit, and the optical element holding member are arranged along a circulation direction of the cooling liquid along the flow path in order of the liquid pumping unit, the liquid storage unit, and the optical element holding member. | 09-30-2010 |
| 20100253923 | HEAT EXCHANGER AND PROJECTOR - A heat exchanger which is hollow and contains a plurality of small flow paths includes: a plurality of partition walls disposed in parallel with one another in the width direction of the heat exchanger to form the plural small flow paths; and an inlet unit and an outlet unit configured to communicate with the inside and the outside of the heat exchanger, and allow cooling liquid to flow into and out of the heat exchanger through the inlet unit and the outlet unit, the inlet unit and the outlet unit extend in directions opposite to each other along the width direction from a pair of center positions located approximately at the centers of inner side surfaces of the heat exchanger in the width direction and opposed to each other, and penetrate outer side surfaces of the heat exchanger. | 10-07-2010 |
| 20100328619 | COOLING CELL FOR LIGHT MODULATOR - A cooling cell for drawing heat from a light modulator has an enclosure for conducting a fluid coolant. The enclosure has a fluid coolant inlet disposed to receive fluid coolant under pressure and a fluid conduit to provide fluid communication from the fluid coolant inlet to a nozzle. A well cavity surrounds the nozzle and has a number of fins that extend radially upward from a bottom of the well cavity and outward from the well cavity along a shallow cavity that is peripheral to the well cavity and is shallower than the well cavity. The well cavity is formed within a protruding element that protrudes outward from a portion of an external surface of the enclosure. The protruding element provides a component mounting surface that lies behind the bottom of the well cavity. There is at least one fluid coolant discharge outlet for discharging fluid coolant from the enclosure. | 12-30-2010 |
| 20110001937 | Projection Display Device And Illumination Device - A projection display device includes an optical system which modulates light based on an image signal to generate and output image light; an illumination device which has a plurality of light sources, and emits illumination light in a predetermined axis direction in parallel to an installation plane of the optical system to supply the illumination light to the optical system; a heat transfer system which transfers a heat generated in the light sources in a direction generally perpendicular to the installation plane; and a cooling device which is disposed in a direction generally perpendicular to the installation plane, and removes the heat transferred by the heat transfer system. | 01-06-2011 |
| 20110025985 | PROJECTOR AND CONTROL METHOD - A projector includes: an illumination device that emits illumination light; a light modulating device that modulates the illumination light on the basis of an input image signal; and a cooling device that cools the light modulating device according to a light amount of the illumination light. | 02-03-2011 |
| 20110032488 | Projection Display Apparatus - A projection display apparatus includes: a light source, a light valve configured to modulate light emitted from the light source, a projection unit configured to project light emitted from the light valve, on a projection surface, and a valve controller configured to initialize the light valve in response to a drive-starting command to start driving the projection display apparatus; and a light-source controller configured to make the light source start operating when the valve controller finishes initialization of the light valve. | 02-10-2011 |
| 20110037954 | PROJECTOR - There is disclosed a projector which supplies air cooled by a cooling unit to an optical element group, whereby the occurrence of dew condensation is prevented. The projector includes a cooling apparatus | 02-17-2011 |
| 20120069305 | COOLING DEVICE AND PROJECTOR - A cooling device is provided. The cooling device may include a pump chamber, an inlet flow passage that is used for allowing a fluid to flow into the pump chamber, an outlet flow passage that allows the fluid to flow out from the pump chamber, a pump that includes a fluid resistance element that opens or closes the inlet flow passage between the inlet flow passage and the pump chamber, a circulation flow passage that is used for circulating the fluid from the outlet flow passage to the inlet flow passage, and a first volume adjusting chamber that adjusts pressure of the fluid flowing into the pump chamber. | 03-22-2012 |
| 20130258295 | PROJECTOR - A projector includes a light source lamp, a cooling device adapted to feed a cooling fluid to the light source lamp to thereby cool the light source lamp, a lighting control section adapted to supply the light source lamp with the lamp electric power having either one of a first electric power value and a second electric power value higher than the first electric power value to thereby light the light source lamp, and a cooling control section adapted to control the cooling device, and the cooling control section controls the cooling device so that the cooling fluid at a flow rate lower than a set flow rate set in accordance with the second electric power value is fed to the light source lamp during a predetermined period after the lamp electric power is switched from the first electric power value to the second electric power value. | 10-03-2013 |
| 20130293852 | LIQUID COOLED VIDEO PROJECTOR - Disclosed is a liquid cooling system for use with MRI positioned video projectors to dissipate heat from the projector light source through liquid cooling. The system includes a heat sink body for mounting to the projector light source, the heat sink body constructed of a material to transfer heat away from the projector light. A remotely mounted motor-driven pump provides fluid circulation, the pump is constructed and/or mounted so as to not to be effected by the MRI magnetic field. The pump is coupled to the heat sink block by use of flexible tubing that is constructed and arranged to provide heat transfer to the environment thereby maintaining the projector light source temperature at a reduced level. A liquid reservoir is fluidly coupled to the pump intake for use in maintaining liquid levels at an optimum position. | 11-07-2013 |
| 20140300871 | LIQUID-COOLING DEVICE AND PROJECTOR - In at least one embodiment of the disclosure, a projector comprises an optical element holding member that allows a flow of a cooling liquid therein. A plurality of liquid circulation members connect the optical element holding member and a liquid pumping unit and to define a flow channel of the cooling liquid. A heat-receiving jacket is disposed in the flow channel and has a plurality of flow channels. A thermoelectric conversion element having a heat-absorbing surface is connected to the heat-receiving jacket and a heat-radiating surface is connected to a heat transfer member. A supporting member fixes the heat-receiving jacket and the heat transfer member. A baffle member defines an internal space with the supporting member and houses the heat transfer member in the internal space. A cooling fan provides cooling air to the heat transfer member disposed in the internal space. | 10-09-2014 |
| 20160119598 | System and Method Using Silicon Cooler for Mobile Projector - A system and its design variations using heat pump to generate useful warm and cool usages for multi functional mobile projector is exposed; the purpose is two folds: first is to reduce the excessive heat, in order to increase the brightness; the second is to reuse the energy, so to extend the functionalities. The key component used is silicon based heat pump, which can convert the electrical energy to heat energy. Different shaped heat or cool fins are designed to match the multiple use cases. One sample implementation using digital serial interface is described in details. | 04-28-2016 |
| 20160142688 | IMAGE DISPLAY APPARATUS - An image display apparatus includes a light source, a light valve, at least one light guide optical system of a first light guide optical system or a second light guide optical system, a first cooling unit configured to cool at least one of the light source, the light valve, the first light guide optical system, or the second light guide optical system, an inlet port, a second cooling unit configured to cool at least one of the light source, the light valve, the first light guide optical system, or the second light guide optical system, and a filter disposed in an air path from the inlet port to a member to be blown by an air blowing fan. A radiator is disposed between the inlet port and the filter. | 05-19-2016 |
