Liquid Coolant Patents (Class 353/54)
  • Patent number: 11169433
    Abstract: A light source module comprises a first light source, a second light source, a first heat sink structure, and a second heat sink structure. The second light source disposed downstream of a main airflow flowing through the first light source module. The first heat sink structure has a plurality of first heat sink fins. The second heat sink structure has a plurality of second heat sink fins, wherein the first light source and the second light source are disposed along a first direction. The first heat sink structure and the second heat sink structure are disposed along the first direction, the first heat sink fins are arranged along the first direction, the second heat sink fins are arranged along a second direction, and the first direction is different from the second direction. A projection apparatus comprising the light source module is also provided.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: November 9, 2021
    Assignees: Coretronic Corporation, Coretronic Projection (Kunshan) Corporation
    Inventors: Shih-Yao Li, Yu-Wei Guo, Chun-Ting Lin
  • Patent number: 11150546
    Abstract: A light source apparatus includes a first light source, a second light source, a first radiator configured to hold the first light source and to radiate heat from the first light source, and a second radiator configured to hold the second light source and to radiate heat from the second light source. The first radiator includes a plurality of first radiating members to be cooled by air introduced from a first direction and superposed in a second direction. The second radiator includes a plurality of second radiating members to be cooled by air introduced from the first direction and superposed in a third direction. Each of the second direction and the third direction is orthogonal to the first direction. The second direction and the third direction are different from each other.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: October 19, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Makoto Nomoto
  • Patent number: 11029588
    Abstract: A projector having a cooling target includes a light source configured to emit light, a light modulator configured to modulate the light emitted from the light source, a projection optical device configured to project the light modulated by the light modulator, and a cooloer configured to cool the cooling target based on transformation of a refrigerant into a gas. The cooloer includes a refrigerant generator configured to generate the refrigerant from air, a refrigerant sender configured to transmit the refrigerant generated toward the cooling target, and a first duct configured to guide air including the refrigerant changed to a gas in the cooling target toward the refrigerant generator.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: June 8, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Nobuo Sugiyama
  • Patent number: 10983425
    Abstract: A projector includes a cooler cooling a cooling target based on transformation of refrigerant into gas. A refrigerant generator of the cooler includes a moisture absorbing and releasing member, a first blower, a heat exchanger, a heater, a second blower, a first circulation duct through which the air sent to the moisture absorbing and releasing member from the heat exchanger passes, and a second circulation duct through which the air sent to the heat exchanger from the moisture absorbing and releasing member passes. The second circulation duct includes a second opening disposed in a position where the second opening and a first opening of the first circulation duct sandwich the moisture absorbing and releasing member in a predetermined direction. An opening area of the second opening is smaller than an opening area of the first opening. When viewed along the predetermined direction, the entire second opening overlaps the first opening.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: April 20, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Nobuo Sugiyama
  • Patent number: 10890836
    Abstract: A projector having a cooling target includes a light source configured to emit light, a light modulator configured to modulate the light emitted from the light source, a projection optical device configured to project the light modulated by the light modulator, a cooler configured to cool the cooling target based on transformation of a refrigerant into a gas, and a controller configured to control the cooler. The cooler includes a refrigerant generator configured to generate the refrigerant, and a refrigerant sender configured to transmit the generated refrigerant toward the cooling target. The controller controls the refrigerant generator based on at least one of temperature of the cooling target and ambient humidity of the projector.
    Type: Grant
    Filed: July 10, 2020
    Date of Patent: January 12, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Naoya Okada, Nobuo Sugiyama
  • Patent number: 10698304
    Abstract: A cooling device includes a heat receiving unit, a working fluid, a radiator, and a pump. The heat receiving unit includes a first member, a second member, an inlet housing, and an outlet housing. The first member receives heat. The second member is disposed to face the first member. The inlet housing is connected to the pump and disposed between the first member and the second member. The outlet housing is connected to the radiator and disposed on a side of the second member facing away from the inlet housing. The first member and the second member are disposed at a predetermined distance away from each other. A vaporization space portion is disposed between the first member and the second member. An outlet space portion is disposed on a side of the second member facing away from the vaporization space portion.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: June 30, 2020
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Makoto Iyoda, Ichiro Kano
  • Patent number: 10514594
    Abstract: A projector includes a cooler that cools a cooling target based on transformation of a refrigerant into a gas. The cooler includes a refrigerant generator that generates the refrigerant, a refrigerant sender that sends the refrigerant generated in the refrigerant generator toward the cooling target, and a refrigerant holder connected to the cooling target, the refrigerant holder holding the refrigerant sent by the refrigerant sender and receiving heat from the cooling target to transform the refrigerant into a gas. The refrigerant generator includes a heat exchanger that stores the generated refrigerant therein. In a case where the projector takes a basic attitude, the refrigerant holder and the refrigerant generator are so located in the projector that the surface of the refrigerant stored in the heat exchanger is lower in the gravity direction than the horizontal plane passing through the lowest portion of the refrigerant holder in the gravity direction.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: December 24, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Naoya Okada, Nobuo Sugiyama
  • Patent number: 10379429
    Abstract: A method and apparatus for mounting a projector holder to or placing a projector holder on an object for displaying an image onto a surface is disclosed. The projector holder includes a body within which a projector is at least partially disposed. The body includes one or more pliable appendages that are adapted to be manipulated and deformed from a first configuration to a second configuration. In some embodiments, the body is formed in the shape of an animal.
    Type: Grant
    Filed: August 16, 2018
    Date of Patent: August 13, 2019
    Assignee: Mimono LLC
    Inventor: Joseph Christian Rossell
  • Patent number: 10359693
    Abstract: A light source apparatus includes a light emitter that emits excitation light, a support member having an accommodation space on the optical path of the excitation light, a light guide system provided on the optical path in the accommodation space, and a wavelength conversion element provided on the optical path of the excitation light having passed through the light guide system and including a phosphor layer, a substrate that supports the phosphor layer, and a light reflection surface provided between the phosphor layer and the substrate. The substrate is so supported by the support member that the phosphor layer faces the light guide system. The substrate is thermally connected to the support member, and the support member includes a light exit section that transmits fluorescence emitted from the phosphor layer.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: July 23, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kunihiko Takagi
  • Patent number: 10237524
    Abstract: A lighting device includes a light source, a rod-integrator, a light guiding section for guiding light emitted from the light source to an incident face of the rod-integrator and a first reflecting plate. The first reflecting plate has a through-hole and is adjacent to the incident face of the rod-integrator with the rod-integrator being inserted into the through-hole of the first reflecting plate. The first reflecting plate is configured to reflect unnecessary light emitted from the light guiding section, the unnecessary light not entering incident light.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: March 19, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shu Namba
  • Patent number: 10209609
    Abstract: An electronic device has a first device holder and a second device holder each having a heat generating device attached thereto, a first heat conductive plate and a second heat conductive plate which are connected to the first and second device holders, respectively, a first heat dissipating fin disposed by the side of the second device holder which is disposed adjacent to the first device holder, a second heat dissipating fin disposed adjacent to the first heat dissipating fin in the same direction as the first heat dissipating fin, two first heat pipes which connect the first device holder with the first heat dissipating fin so that heat can be conducted therebetween, and a second heat pipe which connects the second device holder and the second heat dissipating fin so that heat can be conducted therebetween and which is disposed between the two first heat pipes.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: February 19, 2019
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Ryo Kikuchi
  • Patent number: 9915858
    Abstract: A cooling device cools down a wheel having a disc shape. The wheel is hermetically enclosed in an enclosure and rotationally driven about a rotation shaft. The cooling device includes blade members that are disposed on one surface of the wheel, a heat dissipater to which a gas heated by the wheel is blown by the blade members due to rotation of the wheel, and a gas flow definer that is located inside the enclosure, and separates a flow path along which the gas that has been cooled by the heat dissipater flows before being blown to the one surface and a flow path along which the gas that has been blown to the one surface and heated flows.
    Type: Grant
    Filed: January 3, 2017
    Date of Patent: March 13, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Manabu Chikayama, Shigekazu Yamagishi, Shu Namba
  • Patent number: 9891509
    Abstract: A method and apparatus for mounting a projector holder to or placing a projector holder on an object for displaying an image onto a surface is disclosed. The projector holder includes a body within which a projector is at least partially disposed. The body includes one or more pliable appendages that are adapted to be manipulated and deformed from a first configuration to a second configuration. In some embodiments, the body is formed in the shape of an animal.
    Type: Grant
    Filed: December 12, 2016
    Date of Patent: February 13, 2018
    Assignee: Mimono LLC
    Inventor: Joseph Christian Rossell
  • Patent number: 9857671
    Abstract: A light source device including a plurality of solid-state light sources, and a cooling member having a plurality of cooling surfaces, the cooling member being configured to cool the plurality of solid-state light sources provided on the respective cooling surfaces.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: January 2, 2018
    Assignee: SONY CORPORATION
    Inventor: Yoshiro Asano
  • Patent number: 9829776
    Abstract: A light source device including a plurality of solid-state light sources, and a cooling member having a plurality of cooling surfaces, the cooling member being configured to cool the plurality of solid-state light sources provided on the respective cooling surfaces.
    Type: Grant
    Filed: July 14, 2014
    Date of Patent: November 28, 2017
    Assignee: SONY CORPORATION
    Inventor: Yoshiro Asano
  • Patent number: 9488358
    Abstract: A laser light source device includes: a laser light source module; a pipe through which a cooling refrigerant flows; a heat block which thermally joins the laser light source module and the pipe to each other; and a vessel which is arranged below the heat block and receives dew condensation water which is generated on a surface of the heat block by condensation and drops. The vessel has an opening portion which opens upward, and a plan view profile of the opening portion is larger than a plan view profile of the heat block.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: November 8, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Tatsuro Hirose
  • Patent number: 9388972
    Abstract: A light source apparatus of the present disclosure includes a semiconductor light source, a light source holding member on which the semiconductor light source is disposed, the light source holding member being made of a thermal conductive material, and a cooling member that radiates heat generated by the semiconductor light source through the light source holding member. In addition, the light source apparatus includes an optical lens, an optical lens holding member that holds the optical lens and that is disposed on a light-emitting portion side of the semiconductor light source, and a thermal conductive member having a hole that houses a light-emitting portion of the semiconductor light source. The thermal conductive member is sandwiched between the light source holding member and the optical lens holding member, and comes into close contact with a side surface of the light-emitting portion.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: July 12, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Shu Namba
  • Patent number: 9341931
    Abstract: A projector includes a plurality of light sources, an integrator lens and an overlapping lens, a light guide optical system, a light control device, a light modulation device, and a projection optical system, the light control device includes a pair of light-blocking members opposed to each other across a light path of the light emitted from the light sources in one direction in which the plurality of partial areas is arranged on the integrator lens, and a control device adapted to move the light-blocking members into and out of the light path, and the control device moves the pair of light-blocking members into and out of the light path so that the light entering the overlapping lens has a shape with a symmetric property in accordance with lighting and extinction states of the plurality of light sources.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 17, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Yoichi Shishido
  • Patent number: 9328909
    Abstract: There is provided a light source apparatus including a light source, a spreader to spread heat, and a conductor having a plurality of parts to conduct heat diffused from the light source. There is also provided a projector apparatus includes the light source apparatus.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: May 3, 2016
    Assignee: SONY CORPORATION
    Inventor: Takashi Takamatsu
  • Patent number: 9261761
    Abstract: A projection image display device includes an indoor unit to be located indoors and an outdoor unit to be located outdoors. The outdoor unit includes a second refrigerant piping that forms a loop refrigerant path in combination with a first refrigerant piping, a cooling device, and a cooling control circuit that controls cooling for R, G, B laser heat sinks by the cooling device. The indoor unit includes a main control circuit that communicates with the cooling control circuit to control the cooling by the cooling device.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: February 16, 2016
    Assignee: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Makoto Kuriaki
  • Patent number: 9197869
    Abstract: A video display device includes: a video processing unit including a light source and optical components, which generates and displaying video signals; and a cooling mechanism unit cooling the light source and the optical components, wherein the cooling mechanism unit includes an air cooling fan generating cooling air for cooling the optical components to be circulated in the device, a heat exchanger arranged in a flow path of the circulating cooling air, performing heat exchange of the cooling air obtained after the cooling of the optical components from a high temperature to a low temperature, a cooler cooling heat generated in the light source and heat generated in the heat exchanger by a cooling liquid, and a circulating thermal regulator circulating the cooling liquid with respect to the cooler while managing a liquid temperature of the cooling liquid so as to be a constant temperature.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: November 24, 2015
    Assignee: SONY CORPORATION
    Inventor: Yoshiro Asano
  • Patent number: 9164263
    Abstract: An illumination optical system is configured to illuminate an optical modulator configured to modulate incident light and includes a condenser lens system that includes a meniscus lens with a concave on a light source side, and condenses light from a light source; and a spherical aberration corrector disposed on an optical modulator side of the condenser lens system. The illumination optical system satisfies: 0.6<|f/L|<1.4 0.9<sin ??1.0 where f is a focal length of the condenser lens system, L is a length from an object-side principal point of the condenser lens system to the light source, and ? is half an angle at which the condenser lens system takes in the light from the light source.
    Type: Grant
    Filed: October 25, 2013
    Date of Patent: October 20, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Kazuhiro Inoko
  • Patent number: 9152024
    Abstract: A video display device includes: a video processing unit generating and displaying video signals; and a cooling mechanism unit cooling a component to be cooled in the video processing unit, wherein the cooling mechanism unit includes a heat-receiving plate installed at the component to be cooled to receive heat generated at the component to be cooled, a heat conduction member transmitting heat of the heat-receiving plate, a cooler cooling heat transmitted by the heat conduction member by a cooling liquid, and a circulating thermal regulator circulating the cooling liquid with respect to the cooler while managing a liquid temperature of the cooling liquid so as to be a constant temperature.
    Type: Grant
    Filed: May 15, 2013
    Date of Patent: October 6, 2015
    Assignee: SONY CORPORATION
    Inventor: Yoshiro Asano
  • Patent number: 9057938
    Abstract: 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.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: June 16, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Tetsuo Terashima, Shunsuke Hino
  • Patent number: 9016870
    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.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 28, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-geun Lim, Jun-seok Park, Jean Hur, Sung-je Woo
  • Patent number: 9010941
    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.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: April 21, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Norikazu Kadotani, Akira Hashimoto, Akira Egawa
  • Patent number: 8985780
    Abstract: 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.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: March 24, 2015
    Assignee: Avotec, Inc.
    Inventor: Paul E. Bullwinkel
  • Publication number: 20140300871
    Abstract: 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.
    Type: Application
    Filed: June 20, 2014
    Publication date: October 9, 2014
    Inventors: Yoshiyuki Yanagisawa, Yasunaga Momose
  • Patent number: 8794767
    Abstract: 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.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: August 5, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Yanagisawa, Yasunaga Momose
  • Patent number: 8752966
    Abstract: A light source device includes a light emitting tube having a light emitting section configured to emit light, a first reflecting member configured to reflect the light emitted from the light emitting section, and a rectifying member disposed between the light emitting section and the first reflecting member, and configured to rectify a cooling fluid configured to cool the light emitting tube, and the rectifying member includes a rectifying surface configured to guide the cooling fluid flowing toward the rectifying member to the light emitting section, and a pair of standing surfaces standing from both ends of the rectifying surface.
    Type: Grant
    Filed: September 26, 2011
    Date of Patent: June 17, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Toshizo Nishi, Akira Momose, Ryo Okamura, Takahiro Takizawa
  • Patent number: 8651668
    Abstract: 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.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: February 18, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Yanagisawa, Yasunaga Momose
  • Publication number: 20130293852
    Abstract: 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.
    Type: Application
    Filed: May 3, 2013
    Publication date: November 7, 2013
    Applicant: Avotec, Inc.
    Inventor: Paul E. Bullwinkel
  • Publication number: 20130258295
    Abstract: 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.
    Type: Application
    Filed: December 19, 2011
    Publication date: October 3, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tetsuo Terashima, Shunsuke Hino
  • Patent number: 8517540
    Abstract: A liquid crystal projector includes a light modulating device, a cooling device, a dehumidification device, and a housing. The light modulating device forms an optical image by modulating light flux emitted from a light source based on image information. The cooling device cools air to be supplied to the light modulating device. The dehumidification device dehumidifies and dries air to be supplied to the corresponding cooling device. The housing includes a cooling medium flow path for circulating air among the light modulating device, the cooling device, and the dehumidification device. The cooling device includes a thermoelectric conversion material interposed between a pair of heat transmission plates arranged to face each other.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: August 27, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Koichi Terao
  • Patent number: 8398245
    Abstract: 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.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: March 19, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Yanagisawa, Yasunaga Momose
  • Patent number: 8348433
    Abstract: 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.
    Type: Grant
    Filed: March 24, 2010
    Date of Patent: January 8, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Yanagisawa, Yasunaga Momose
  • Patent number: 8322867
    Abstract: A projector apparatus includes a housing having an air inlet and an air outlet, a light source device provided in the housing, an image projection unit provided in the housing and configured to emit an image projection light beam so as to project an image onto a screen, and a cooling device configured to cool the light source device and the image projecting unit. The cooling device includes a cooling passage extending from the air inlet to the air outlet, and a fan configured to suck in outside air from the air inlet and to exhaust the outside air passing through the cooling passage, out of the housing from the air outlet. The air filter section includes a cylindrical filter body, a filter support member configured to support the filter body, and a rotating unit configured to rotate the filter support member.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: December 4, 2012
    Assignee: Sony Corporation
    Inventor: Takanao Komori
  • Patent number: 8267528
    Abstract: An illumination source includes a number of light emitting diodes (LEDs) operating at a first wavelength. Light from the LEDs illuminates a phosphor material that generates light at a second wavelength. A reflective polarizer transmits light at the second wavelength in a first polarization state and reflects light at the second wavelength in a second polarization state orthogonal to the first polarization state. The light at the second wavelength reflected by the reflective polarizer is directed back towards the phosphor material without an increase in angular range. In some embodiments the LEDs, having a conformal layer of phosphor material, are attached directly to the first surface of a liquid cooled plate. A liquid coolant contacts a second surface of the plate.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: September 18, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Arlie R. Conner, Sean M. Donnelly, Peter R. Oehler
  • Patent number: 8251513
    Abstract: 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.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: August 28, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Hiroyuki Itsuki, Yoshiaki Kurosawa
  • Patent number: 8251522
    Abstract: A light modulator includes: a holding member having a frame disposed around an opening; and a light modulation panel formed in such a way that the edge thereof is held by the frame and the outer surface of the portion corresponding to the opening is flush with the outer surface of the frame or positioned outside the outer surface of the frame.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: August 28, 2012
    Assignee: Sony Corporation
    Inventor: Atsushi Oda
  • Patent number: 8231229
    Abstract: A mounting structure for a temperature sensor, which detects the temperature of a wall surface. The mounting structure includes a groove formed in the wall surface and having an inlet from which the temperature sensor is inserted. The temperature sensor includes a main body, which has a temperature detection surface that detects the temperature of the wall surface, and a lead wire connected to the main body. A support supports the main body. A wire bender bends the lead wire of the temperature sensor extending out of the inlet to press the temperature detection surface of the temperature sensor against the wall surface with an elastic force of the lead wire that is produced when the lead wire is bent. A stopper restricts movement of the main body of the temperature sensor.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: July 31, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Toshimasa Kanbara, Taichi Yoshimura
  • Patent number: 8226244
    Abstract: LED modules (1R, 1G, 1B) for respectively emitting red, green and blue colors of light, illumination optical systems (2R, 2G, 2B) for guiding light from the LED modules, and a liquid crystal panel (7) for modulating the light from the LED modules guided by the illumination optical systems on the basis of an image signal are placed. The LED modules are provided with respective cooling units connected to the backside thereof through spreaders (11R, 11G, 11B) as thermal conductive members. Only the cooling device for the red LED module (1R) is formed by using a red Peltier device (12) as a thermoelectric element capable of controlling heating and absorbing heat. Efficient temperature control by appropriately using a Peltier device for cooling the plurality of solid light sources that emit colors of light different from each other becomes possible.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: July 24, 2012
    Assignee: Panasonic Corporation
    Inventors: Shigekazu Yamagishi, Kazunori Tanabe, Shuu Nanba
  • Publication number: 20120069305
    Abstract: 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.
    Type: Application
    Filed: September 15, 2011
    Publication date: March 22, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takeshi SETO, Atsuya HIRABAYASHI
  • Patent number: 8128236
    Abstract: Disclosed is an image projecting apparatus having a cooling device, which cools heat generated from a plurality of light sources respectively emitting light of different colors and heat generated from a display device simultaneously, while effectively dispersing the heat. The image projecting apparatus includes a projecting system which projects light; a display device disposed in series with the projecting system; an optical system disposed in parallel with the projecting system, and including a plurality of light sources which transmit the light to the display device and generate heat when the light is transmitted to the display device; a heat dissipation device disposed at an outer edge of the optical system which dissipates the heat generated from the plurality of light sources; and a cooling fan disposed opposite to the display device, which inhales air and discharges the air to the heat dissipation device.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: March 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Sub Kim, Sang Jun Choi, Byung Jo Kang
  • Patent number: 8092027
    Abstract: A portable electronic device with micro-projecting module includes a shell body, a micro-projecting module, a heat-conducting plate and a supporting stand. The shell body has a front lateral plate and a bottom lateral plate adjoining the front lateral plate. The front lateral plate has a front through hole, while the bottom lateral plate has a bottom through hole. The micro-projecting module is arranged in the shell body and has a lens exposing to an outside of the shell body from the front through hole. The heat-conducting plate is arranged in the shell body and is positioned between the micro-projecting module and the bottom through hole. In the meantime, the heat-conducting plate has a heat-absorbing face contacting the micro-projecting module and a heat-dissipating face abutted against the bottom through hole.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: January 10, 2012
    Inventor: Yi-Fang Chuang
  • Patent number: 8087787
    Abstract: Methods and apparatus are disclosed for maximizing performance of an electronic device, such as a display device. Aspects of the exemplary embodiments include operating the electronic device by adjusting power to the device to maintain a predetermined junction temperature of the device independent of the ambient temperature at which the device is operating.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: January 3, 2012
    Assignee: Spatial Photonics, Inc.
    Inventor: David L. Medin
  • Patent number: 8083355
    Abstract: A projector, includes: a light source device; an optical device that modulates a light beam irradiated from the light source device in accordance with image information; and a projection optical device that projects the light beam modulated by the optical device. The optical device includes: an optical element optically converting the light beam incident thereon and emitting the converted light beam; and a heat-conducting member that is connected with the optical element in a heat transferable manner to cool the optical element. The heat-conducting member includes a heat pipe having: a tube; a capillary structure provided in the tube; and a coolant housed in the tube, the coolant circulating in the tube to transfer heat in the heat-conducting member.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: December 27, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Yanagisawa, Yasunaga Momose, Motoyuki Fujimori
  • Patent number: 8052282
    Abstract: An electronic device includes a heat dissipation system and an operating system. The heat dissipation system includes a housing, a first heat dissipation module received in the housing, heat pipes extending from the first heat dissipation module through the housing. The operating system includes a dust-proof housing, a heat source and a heat dissipation device. The heat source is received in the dust-proof housing and generates heat. The cooling module is adhered to an outer surface of the dust-proof housing to be cooled and attaches the heat pipes to the first heat dissipation module. The outer surface of the dust-proof housing is adjacent to the housing. The heat pipes transfer heat from the operating system into the first heat dissipation module.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: November 8, 2011
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Chien-Fu Chen, Yi-Ping Hsieh, Chung-Chen Chen
  • Patent number: RE43321
    Abstract: A light source lamp unit (10) includes a light source lamp (11), an ellipsoidal reflector (12) and a plate body (19). The plate body (19) is provided behind the reflector (12) with a gap kept therebetween, which has a shape corresponding to the profile of a reflecting portion (122) of the reflector (12). A cooling channel for passing a cooling air is formed between the plate body (19) and the reflector (12). The width of the cooling channel in a direction along an optical axis of the light source lamp (11) is minimized at a part near a neck portion (121) of the reflecting portion (122) and enlarged toward the peripheral edge of the reflecting portion (122) of the reflector (12).
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: April 24, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Motoyuki Fujimori, Takeshi Takezawa, Hiroyuki Meguro, Masakazu Kitamura
  • Patent number: RE43777
    Abstract: A light source lamp unit (10) includes a light source lamp (11), an ellipsoidal reflector (12) and a plate body (19). The plate body (19) is provided behind the reflector (12) with a gap kept therebetween, which has a shape corresponding to the profile of a reflecting portion (122) of the reflector (12). A cooling channel for passing a cooling air is formed between the plate body (19) and the reflector (12). The width of the cooling channel in a direction along an optical axis of the light source lamp (11) is minimized at a part near a neck portion (121) of the reflecting portion (122) and enlarged toward the peripheral edge of the reflecting portion (122) of the reflector (12).
    Type: Grant
    Filed: July 12, 2007
    Date of Patent: October 30, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Motoyuki Fujimori, Takeshi Takezawa, Hiroyuki Meguro, Masakazu Kitamura