Blower Patents (Class 353/57)
  • Patent number: 10389968
    Abstract: A laser projection device may include a laser, an installing bracket and a sealing ring. A sidewall of the laser may include an annular groove. A laser installing opening may be included on the installing bracket and the laser may be fitted in the laser installing opening. The sealing ring may include an embedded portion and a curved portion. A first bevel chamfer may be formed on an outer side of the curved portion, and a second bevel chamfer may be formed between the top surface and an inner wall of the laser installing opening. The sealing ring may be located between the sidewall of the laser and the laser installing opening, and the first bevel chamfer and the second bevel chamfer fit together.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: August 20, 2019
    Assignee: Qindao Hisense Laser Display Co., Ltd.
    Inventors: Xianglai Pang, Changming Jia, Hongjie Fan, Fei Zhao, Zinan Zhou, Xiuyan Cao
  • Patent number: 10288872
    Abstract: Disclosed are a wavelength conversion device, and a light source system and a projection system therefor. The wavelength conversion device comprises a supporting structure and a plurality of wavelength conversion modules arranged together, each wavelength conversion module comprising a ceramic carrier and a phosphor material provided thereon. The supporting structure ensures that the plurality of wavelength conversion modules remain fixed relative to one another. The light source system and the projection system both comprise the present wavelength conversion device. The use of ceramic material as the carrier for the phosphor material enables high temperature resistance, and prevents detachment of the phosphor material due to deformation at high temperatures. In addition, such a modular wavelength conversion device does not crack easily, and has a flexible design and shorter production cycle.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 14, 2019
    Assignee: APPOTRONICS CORPORATION LIMITED
    Inventors: Qian Li, Yanzheng Xu
  • Patent number: 10222684
    Abstract: A projector according to the invention includes a discharge lamp, a cooling section, and a control section. The control section is configured to execute a first cooling control in which a number of revolutions of the cooling section does not depend on an inter-electrode voltage of the discharge lamp and a second cooling control for controlling the cooling section based on first control information indicating a relation between the inter-electrode voltage and the number of revolutions. The number of revolutions in the first cooling control is equal to or smaller than the number of revolutions in the second cooling control. When the inter-electrode voltage is larger than a first voltage value or when a cumulative lighting time of the discharge lamp is larger than a first time, the control section configured to switch the control of the cooling section from the first cooling control to the second cooling control.
    Type: Grant
    Filed: February 2, 2018
    Date of Patent: March 5, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Junichi Suzuki
  • Patent number: 10027859
    Abstract: Modular digital camera systems are disclosed. The modular digital camera system can include a brain module configured to be releasably coupled to one or more of a port extender module, power module, display module, and handle module. The brain module and other accessory modules can be structured according to some embodiments to increase an ease of coupling and decoupling the modules.
    Type: Grant
    Filed: April 1, 2016
    Date of Patent: July 17, 2018
    Assignee: RED.COM, LLC
    Inventors: James H. Jannard, Sean Lever, Craig Smith, Todd Berk, Brian McEvilly, John Hamming
  • Patent number: 10004158
    Abstract: An electronic apparatus which is capable of suppressing temperature increase in an interior of the electronic apparatus and also reducing effects of noise arising from operation of a fan during sound recording even when sound is recorded over a long time period. A duct unit joins an inlet and an outlet, which are formed in a cabinet of the electronic apparatus, to each other and is thermally connected to a heat source. A first fan blows air in the duct unit from the inlet toward the outlet. A second fan circulates air inside the electronic apparatus. According to a sound recording operation, the first fan and the second fan are drivingly controlled in a selective manner.
    Type: Grant
    Filed: March 8, 2016
    Date of Patent: June 19, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Naoyuki Abe
  • Patent number: 9977314
    Abstract: The present application provides a light-pipe adjusting apparatus comprising: a first support; a light-pipe component, slidably connected to the first support via a first rail; and a first drive device, provided on the first support and connected to the light-pipe component for driving the light-pipe component to slide along the first rail. The present application can improve the accuracy and reliability of the position adjustment of the light-pipe component.
    Type: Grant
    Filed: March 15, 2017
    Date of Patent: May 22, 2018
    Assignees: HISENSE CO., LTD., HISENSE USA CORPORATION, HISENSE INTERNATIONAL CO., LTD.
    Inventors: Xiuyan Cao, Wensheng Lu
  • Patent number: 9769439
    Abstract: A projector includes a light detector that detects light brightness information on the brightness of light emitted from a light source and an adjuster that corrects the light brightness information detected with the light detector and adjusts the output from the light source based on the corrected light brightness information.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: September 19, 2017
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Takashi Toyooka
  • Patent number: 9740087
    Abstract: A light source device unit includes a light source device including a light source and an outflow port constituting part having a plurality of first outflow ports for making a cooling air flow out, a flow channel constituting part including an inlet port constituting part having a plurality of first inlet ports communicated with the first outflow ports and adapted to introduce the cooling air, and an opening and closing part adapted to selectively open and close the first inlet ports, the first inlet ports are arranged in a periphery of a central axis (a stationary shaft), and the opening and closing part includes a rotary member rotates around the stationary shaft in accordance with a posture of the light source device to thereby selectively open and close the first inlet ports.
    Type: Grant
    Filed: June 8, 2016
    Date of Patent: August 22, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Daiki Yuto, Takahiro Takizawa
  • Patent number: 9664985
    Abstract: A cooling apparatus includes a cooling fan that has a rotating blade and a fan case accommodating the blade and delivers cooling air and a holder that holds the cooling fan. The holder has a first member and a second member that sandwich and support the cooling fan, and the first member and the second member are made of materials having physical properties different from each other and hence have natural frequencies different from each other.
    Type: Grant
    Filed: May 15, 2015
    Date of Patent: May 30, 2017
    Assignee: Seiko Epson Corporation
    Inventors: Masato Kadotani, Norikazu Kadotani
  • Patent number: 9651852
    Abstract: A light source device includes a light source, a reflector that reflects light emitted from the light source, a light source housing accommodating the light source and the reflector and including a plurality of introduction ports through which cooling air is introduced, an introduction port forming portion having a plurality of outlet ports communicating with the plurality of introduction ports, an opening and closing device opening and closing the plurality of introduction ports, and a holding unit having the introduction port forming portion accommodating the opening and closing device. The light source device is used in a projector having a cooling device. The holding unit is fixed to an external housing of the projector and supports the reflector housing in such a manner as to be freely attachable and detachable.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: May 16, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Yasushi Tateno
  • Patent number: 9625798
    Abstract: There is provided a light source unit including a first light source, a second light source, a first heat sink for the first light source which is disposed to a side of the first light source, a second heat sink for the second light source which is disposed to a side of the second light source, and a first cooling fan which is disposed between the first heat sink and the second heat sink, wherein the first light source and the first heat sink are connected together by a first heat pipe via a bulkhead, and wherein the second light source and the second heat sink are connected together by a second heat pipe via the bulkhead.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: April 18, 2017
    Assignee: CASIO COMPUTER CO., LTD.
    Inventor: Toshifumi Kase
  • Patent number: 9599880
    Abstract: A projection display apparatus includes: a substantially box-shaped enclosure having a bottom surface portion, the bottom surface portion having an ventilation groove and an air inlet formed through a wall of the ventilation groove; an air sucking fan provided in the enclosure and forming an air flow flowing through the air inlet into the enclosure, and a filter through which the air flowing through the air inlet into the enclosure passes.
    Type: Grant
    Filed: March 4, 2016
    Date of Patent: March 21, 2017
    Assignee: SONY CORPORATION
    Inventors: Satoru Awane, Hiroyuki Meguro
  • Patent number: 9557631
    Abstract: A light source unit includes a light emitting element supporter to support a plurality of light emitting elements disposed with a dispersed pattern in a two-dimensional direction as a light emitting element assembly, and light emitted from the light emitting element assembly exits to a target; a light return member disposed at a position facing a light emitting side of the light emitting element assembly while setting a space with the light emitting element supporter, the light return member returning light emitted from the light emitting element assembly toward at an inner side of two dimensional direction of the light emitting element assembly, and a flow path of the cooling air to pass through cooling air supplied from an air supply unit into the space.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: January 31, 2017
    Assignee: RICOH COMPANY, LTD.
    Inventors: Takehiro Nishimori, Kazuhiro Fujita, Toshiharu Murai, Ikuo Maeda, Tatsuya Takahashi
  • Patent number: 9470960
    Abstract: A projector includes a light source apparatus, a light modulator that modulates a light flux outputted from the light source apparatus in accordance with image information, a projection lens that projects the light flux modulated by the light modulator, an exterior enclosure that accommodates the light source apparatus, the light modulator, and the projection lens, an exhaust fan (first exhaust fan) that exhausts air inside the exterior enclosure out thereof through an exhaust port (first light source exhaust port) provided in the exterior enclosure, and a functional device (wireless device) that provides a predetermined function and is heated to a temperature higher than the temperature of the exhaust air from the first exhaust fan. The wireless device is disposed in a position downstream of the first exhaust fan, and part of the exhaust air discharged from the first exhaust fan flows to the wireless device.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: October 18, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Tsuchitani, Kenichi Asami, Masatoshi Ito
  • Patent number: 9335616
    Abstract: An optical device utilized in a laser projector includes a circulatory air channel, a phosphor wheel disposed in the circulatory air channel, a thermal exchanger partially disposed in the circulatory air channel, and an air guiding component disposed in the circulatory air channel for guiding an air provided by the thermal exchanger toward the phosphor wheel. The temperature of the air passing through the phosphor wheel is lower than an environment temperature.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: May 10, 2016
    Assignee: DELTA ELECTRONICS, INC.
    Inventors: Chia-Jui Lin, Hsiu-Ming Chang
  • Patent number: 9329463
    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.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: May 3, 2016
    Assignee: RICOH COMPANY, LTD.
    Inventors: Masamichi Yamada, Tetsuya Fujioka, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9323117
    Abstract: Flexible substrates are drawn from two terminals provided on a TFT substrate, respectively, and IC chips are mounted on both flexible substrates. Both flexible substrates are placed so that positions of the IC chips provided on both flexible substrates overlap with each other.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: April 26, 2016
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Tomoaki Miyashita
  • Patent number: 9250503
    Abstract: An image display device has a light source; a power supply section that supplies power to a light source; a cooling fan that cools the light source; a input section; and a control section that controls the cooling fan and the power supply section. If a first lighting mode in which a power value supplied to the light source is a first setting value is designated through the input section, the control section causes the power supply section to supply power that corresponds to the first setting value to the light source and causes the cooling fan to operate.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: February 2, 2016
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Tadashi Tani, Yukinori Shioya, Jiro Takami
  • Patent number: 9207521
    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.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: December 8, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Masamichi Yamada, Tetsuya Fujioka, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9176366
    Abstract: A projector according to an embodiment of the invention can measure the temperature of an object to be cooled accurately with a simple configuration and perform accurate cooling control. The projector includes a power-supply unit, a ballast unit having a ballast control circuit and a photocoupler, and a control unit. The power-supply unit includes a temperature detection element generating temperature information indicating the temperature inside the power-supply unit. The ballast control circuit controls a constant-current control circuit and the like based on the control information transmitted from the control unit via the photocoupler and transmits temperature data based on the temperature information to the control unit via the photocoupler. The control unit includes a projector control circuit performing cooling control on the power-supply unit based on the temperature data.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: November 3, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Keishi Kimura, Kenichi Shioiri
  • Patent number: 9164363
    Abstract: A projection apparatus includes a casing, a motherboard, a power board, a light source, and a projection lens. The motherboard includes a host circuit board, a light valve, and a CPU, and is contained inside the casing. The light valve and the CPU are on the host circuit board. The power board includes a power circuit board and an AC/DC power module. The power circuit board is contained inside the casing, and the AC/DC power module is on the power circuit board. The light source is used to produce an illuminating beam. The light valve is used to transform the illuminating beam into an image beam. The projection lens is used to transform the image beam into a projecting beam. The power circuit board is parallel to the host circuit board. An optical axis of the projection lens is perpendicular to the host circuit board and power circuit board.
    Type: Grant
    Filed: July 19, 2013
    Date of Patent: October 20, 2015
    Assignee: Coretronic Corporation
    Inventors: Sheng-Yu Chiu, Jung-Chi Chen
  • Patent number: 9140968
    Abstract: A particle-containment shield is provided. The particles-containment shield includes a containment structure that defines an air inlet to receive air heated by a projection lamp from the outlet of the projection-lamp module and defines an air outlet to vent air heated by the projection lamp away from the projection lamp. The containment structure is sealed intermediate the air inlet and the air outlet such that air heated by the projection lamp that enters through the air inlet exits the containment structure through the air outlet. The containment structure defines a length, a width, and a height of the particle-containment shield. The particle-containment shield includes one or more deflection members is arranged in the containment structure to collectively block all straight line paths from the air inlet to the air outlet so as to inhibit projection lamp particles from exiting the air outlet upon projection lamp rupture.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: September 22, 2015
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Dan Loomis, Brian Patterson
  • Patent number: 9134594
    Abstract: The present invention provides a projection device management system including two or more projection devices which project images on a projection surface; and a management device which corrects the image projected by each projection device based on information on each projection device and manages information for maintenance of each projection device, the two or more projection devices being installed in the same theater.
    Type: Grant
    Filed: July 3, 2013
    Date of Patent: September 15, 2015
    Assignee: CJ CGV CO., LTD
    Inventors: Hwan Chul Kim, Su Ryeon Kang
  • Patent number: 9088732
    Abstract: A projection display device includes light source device including a plurality of lamp units; a plurality of lamp apertures disposed in main body cabinet such that the plurality of lamp units are replaced therethrough; a plurality of lamp covers for covering respective lamp apertures; four first detection switches for detecting opening and closing of respective lamp covers; and lamp control power source unit for supplying ballast control voltage signal to first detection switches. Four first detection switches are disposed on sub-circuit board. Sub-circuit board also includes conductive pattern for branching ballast control voltage signal input to first jack and leading the branched signal to first detection switches.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: July 21, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazunori Kotani
  • Patent number: 9086616
    Abstract: A projection display device includes light source device including a plurality of lamp units; a plurality of lamp covers for covering a plurality of lamp apertures through which respective lamp units are taken in and out; a plurality of lamp power source units for driving respective lamp units; temperature switch for detecting the temperature of light source device; and main control unit. When at least one lamp unit is turned off during operation by opening of corresponding lamp cover, main control unit continues the operation. When at least one lamp unit is turned off during operation by temperature detection of temperature switch or abnormal operation of lamp power source unit, the main control unit stops the operation.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: July 21, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventor: Kazunori Kotani
  • Patent number: 9075297
    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.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: July 7, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Masamichi Yamada, Tetsuya Fujioka, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9052581
    Abstract: A light source device including an arc tube having a light emission portion containing electrodes, a cooling channel having a downstream part branched into first and second channels to guide air toward the light emission portion via one of the channels, a rotational member disposed within the cooling channel and rotatable around a rotation shaft by gravity, and configured to switch cooling to the first or second channel depending on a position of the light source device, and a duct that forms apart of the cooling channel. The width of the rotational member decreases from a remote end toward the rotation shaft. The rotation shaft is disposed on one end of the rotational member corresponding to a side opposite a light emission side of the duct. The duct is shaped such that the cooling channel width decreases toward the side opposite the light emission side.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: June 9, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Masahiro Saito, Keisuke Sakagami, Takahiro Miyata
  • Patent number: 9039193
    Abstract: A first light-transmissive plate is provided on an opposite surface of a first substrate of an electro-optic panel to a second substrate. The first light-transmissive plate is smaller than the first substrate, and an end portion of the first substrate is exposed from the first light-transmissive plate. In addition, a heat radiation member made of a metal material is provided so as to be overlapped with the exposed portion from the first light-transmissive plate of the first substrate.
    Type: Grant
    Filed: September 4, 2012
    Date of Patent: May 26, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Tomoaki Miyashita
  • Patent number: 9039192
    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.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 26, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Shunsuke Okazawa, Takayuki Okada
  • Patent number: 9033515
    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.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 19, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ming-Chih Sun, Kai Huang
  • Patent number: 9033514
    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.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: May 19, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasutada Tsukioka, Tetsuya Fujioka, Masamichi Yamada, Naoyuki Ishikawa, Hideo Kanai
  • Publication number: 20150131061
    Abstract: A light source module and a projection apparatus including the light source module, an optical engine module, and a projection lens are provided. The light source module includes a lamp holder, a casing, a light source, and a heat dissipation fan. The lamp holder has a cover having a first inlet and a first outlet. The casing is connected to the lamp holder and has a second inlet and at least one second outlet. The light source is fixed to the lamp holder fixed to a housing of the projection apparatus. The heat dissipation fan generates a heat dissipation airflow through an outflow side. A first part of the heat dissipation airflow enters the cover through the first inlet, and leaves the cover through the first outlet. A second part of the heat dissipation airflow enters the casing through the second inlet, and leaves the casing through the second outlet.
    Type: Application
    Filed: August 13, 2014
    Publication date: May 14, 2015
    Applicant: CORETRONIC CORPORATION
    Inventors: Tung-Chou Hu, Li-Wei Tseng
  • Patent number: 9028073
    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.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: May 12, 2015
    Assignee: Coretronic Corporation
    Inventors: Chuan-Te Cheng, Tao-Hung Kuo
  • Patent number: 9022573
    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.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: May 5, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yukinori Shioya, Jiro Takami
  • 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: 9016868
    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.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: April 28, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideo Kanai, Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa
  • Patent number: 9010944
    Abstract: A projection type image display apparatus (1) comprises a focus correction system (30). The system includes a temperature detection mechanism (16) for measuring temperature in the vicinity of a projection lens group (13), a correction amount calculation unit (18) for calculating a correction amount for correcting the focus shift caused by a temperature change, and a driving signal generation unit (19) for generating, based on the correction amount, a driving signal for driving a focus adjustment mechanism (15). If the user performs a focus adjustment using a focus operation input unit (23), a focus operation determination unit (21) determines that a focus adjustment has occurred independently of the focus correction system and changes a correction condition stored in a memory (20).
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: April 21, 2015
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Norio Maeda, Kohei Wataru, Kazuhiko Inoue, Masahiro Terada, Takashi Ohta, Yasumasa Sawai
  • Patent number: 9004696
    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.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: April 14, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihisa Mikawa, Tetsuya Fujioka, Hideo Kanai, Masamichi Yamada, Yasunari Mikutsu, Satoshi Tsuchiya, Naoyuki Ishikawa, Yukimi Nishi
  • Patent number: 9004697
    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.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: April 14, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Publication number: 20150092164
    Abstract: An optical engine module includes a first casing with a first enclosed space, a light source at the first casing, a phosphor wheel in the first casing, a cooling fan and a heat-dissipating module. The light source emits a light beam passing through the phosphor wheel. The cooling fan is in the first enclosed space and has an airflow outlet. The heat-dissipating module includes two heat-dissipating parts and a heat-guiding part, wherein the first and second heat-dissipating parts are respectively in and outside the first enclosed space, the heat-guiding part is connected between the first and second heat-dissipating parts and the phosphor wheel is between the airflow outlet and the first heat-dissipating part. The airflow outlet and the phosphor wheel, and the phosphor wheel and the first heat-dissipating part, are at least partially overlapped with each other along the airflow exiting direction of the cooling fan.
    Type: Application
    Filed: July 14, 2014
    Publication date: April 2, 2015
    Applicant: CORETRONIC CORPORATION
    Inventors: Tsung-Ching Lin, Jia-Hong Dai, Tung-Chou Hu
  • Publication number: 20150091799
    Abstract: A projector (100) including a plurality of systems (110, 130) and a port (140) adapted to receive and communicate with a removable module (102). More particularly, the projector (100) is capable of indicating its capabilities to the removable module (102), receiving return information from the removable module (102), and selectively configuring the systems (110, 130) according to the return information when such removable module (102) is inserted into the port (140).
    Type: Application
    Filed: February 13, 2013
    Publication date: April 2, 2015
    Inventors: Shuguang Wu, Ernesto M. Rodriguez, JR., James K. Kennedy, Phillip J. Bergeron, Ronald D. Jesme
  • Publication number: 20150077719
    Abstract: A projector includes an apparatus casing, a light source module, a flow generating device, a sensing module, and a power module. The light source module is disposed inside the apparatus casing and includes a light-emitting part and a lampshade surrounding the light-emitting part. The flow generating device can generate an air flow for dissipating heat by the light source module. The sensing module is disposed in the apparatus casing and includes a thermo-sensitive component disposed near the lampshade and located in a flowing path of the air flow. The power module is disposed in the apparatus casing and electrically connected to the light source module and the sensing module. The power module selectively stops powering the light source module according to an electric parameter of the thermo-sensitive component. Thereby, the invention protects the projector from being overheated by use of the thermo-sensitivity of the thermo-sensitive component.
    Type: Application
    Filed: July 29, 2014
    Publication date: March 19, 2015
    Inventors: Fu-Shiung Shih, Chi-Jen Chen, Fang-Chieh Lu, Po-Fu Wu, Chun-Jung Hu
  • Patent number: 8974063
    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.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 10, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Naoto Takehana
  • Patent number: 8974062
    Abstract: A projection apparatus including a casing, a light source module, a fan, and a light engine module is provided. The casing has an inlet and an outlet. The light source module is disposed in the casing and is adjacent to the inlet. The fan is disposed in the casing and is adjacent to the outlet, and is configured to provide a heat dissipation airflow. The light engine module is disposed in the casing and is located between the fan and the light source module, and the heat dissipation airflow sequentially flows through the inlet, the light source module, the light engine module, the fan, and the outlet. The fan is disposed between the light engine module and the outlet.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: March 10, 2015
    Assignee: Coretronic Corporation
    Inventors: Tsung-Ching Lin, Te-Tang Chen, Wen-Yen Chung
  • Patent number: 8960922
    Abstract: A projector that performs light control by varying power level of a light source in response to a video signal, includes a cooling fan that cools the light source, and a control device that averages samples of the power level of the light source based on the video signal or a brightness level of the video signal acquired with respect to each unit time and performs feedback control of a rotational speed of the cooling fan based on the average value, wherein the control device varies the number of samples and calculates the average value between the cases where the power level or the brightness level is rising and falling.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: February 24, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Shunsuke Hino
  • Publication number: 20150042962
    Abstract: A fan control method for a projection apparatus is provided. The method includes the following steps. When the lamp is switched from a working state to a power-off state, the fan device is enabled. When a temperature of the lamp is reduced to a first predetermined temperature, the fan device is disabled. When the temperature of the lamp is reduced to be lower than a second predetermined temperature, the fan device is enabled again. When the temperature of the lamp is reduced to a re-ignition temperature, the fan device is disabled.
    Type: Application
    Filed: December 30, 2013
    Publication date: February 12, 2015
    Applicant: DELTA ELECTRONICS, INC.
    Inventor: Meng-Sheng Chang
  • Publication number: 20150042963
    Abstract: A light source device includes: a first light emitting unit including a light emitting element that emits light having a predetermined wavelength range; a second light emitting unit including a wavelength conversion member that receives the light from the light emitting element and emits light having a different wavelength range different than the predetermined wavelength range; an optical unit configured to define a path of the light emitted from the light emitting element and a path of the light emitted from the wavelength conversion member; an air blowing unit configured to generate a cooling air; and a passage forming member configured to form a passage through which the cooling air flows, the passage being in contact with both of the first light emitting unit and the second light emitting unit.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 12, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Takehiro NISHIMORI, Kazuhiro FUJITA, Toshiharu MURAI, Tatsuya TAKAHASHI
  • Publication number: 20150029471
    Abstract: An image projection device includes: a centrifugal fan that sends air circulating through a casing to a light source; a heat generator that generates heat with supply of power and that is provided in the vicinity of an ejection port of the centrifugal fan; a temperature sensor that is provided to be adjacent to the heat generator; and a controller that monitors lowering of the velocity of the air, which is sent from the centrifugal fan, on the basis of the value of a temperature measured by the temperature sensor.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 29, 2015
    Applicant: Ricoh Company, Limited
    Inventors: Hideo KANAI, Tetsuya FUJIOKA, Masamichi YAMADA, Satoshi TSUCHIYA, Naoyuki ISHIKAWA, Akihisa MIKAWA, Yasunari MIKUTSU
  • Publication number: 20150029470
    Abstract: An image projection apparatus according to the present invention, includes: an air-intake port that takes in outside air for cooling the inside of a housing; a heater that is provided near the air-intake port and generates heat with supply of electric power; a temperature sensor that is provided next to the heater; and a controller that monitors a decrease in the flow velocity of outside air taken in through the air-intake port based on temperature values measured by the temperature sensor.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 29, 2015
    Inventors: Hideo KANAI, Tetsuya FUJIOKA, Akihisa MIKAWA, Naoyuki ISHIKAWA, Masamichi YAMADA, Yasunari MIKUTSU, Satoshi TSUCHIYA
  • Publication number: 20150029469
    Abstract: An image projection apparatus includes a light source in which a light emitting material emits light through an electric discharge between electrodes; an image forming unit that modulates an intensity of the light emitted from the light source to form an image; a cooling fan that cools the light source; an input unit that receives an input of an instruction signal for turning off a power source of the image projection apparatus; a voltage detector that detects a voltage value of the light source in lighting; a voltage value determining unit that determines whether the voltage value detected by the voltage detector is less than a preset threshold value when the input unit receives the instruction signal; and a cooling fan controller that performs an after-cooling operation of driving the cooling fan to cool the light source when the voltage value is less than the threshold value.
    Type: Application
    Filed: June 25, 2014
    Publication date: January 29, 2015
    Applicant: RICOH COMPANY, LIMITED
    Inventor: Yoshio KUBO