Blower Patents (Class 353/57)
  • Patent number: 8919964
    Abstract: A light source device includes: a tubelar body disposed in the front side of a reflection mirror in the light emission direction and surrounding an arc tube; a pair of ducts connecting with the tubelar body and provided with a first channel and a second channel to guide air; and a channel switching mechanism which allows air to flow through the first channel or the second channel. The tubelar body includes a pair of communicating ports configured to supply air flowing through the first channel and the second channel toward the light emission portion. The pair of the communicating ports are disposed on a virtual line passing through the center line of the arc tube and crossing the vertical direction and the horizontal direction as viewed in a direction along the center line.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: December 30, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Takahiro Miyata
  • Publication number: 20140375967
    Abstract: A cooling structure includes: a heat releasing unit configured to include a plurality of fins and to release heat by contacting a first cooling target; and an air blowing unit configured to blow air to the heat releasing unit, wherein the heat releasing unit includes a first region and a second region in which intervals of the fins are smaller than those of the first region, and a second cooling target that is different from the first cooling target is positioned downstream relative to the first region in a flow path of the air, and the air that has passed through the first region blows on the second cooling target.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 25, 2014
    Inventors: Akihisa MIKAWA, Tetsuya FUJIOKA, Hideo KANAI, Masamichi YAMADA, Yasunari MIKUTSU, Satoshi TSUCHIYA, Naoyuki ISHIKAWA
  • Publication number: 20140375966
    Abstract: A cooling device includes a heat dissipating unit that is in contact with an object to be cooled and dissipates heat, and an air blowing unit that takes therein air and blows the air to the heat dissipating unit. The heat dissipating unit includes a first stage portion and a second stage portion that have a difference in level therebetween. The air blowing unit includes a first inlet port that takes therein air from outside, and an outlet port that exhausts the taken-in air. The first inlet port faces the first stage portion, and the outlet port faces the second stage portion.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 25, 2014
    Inventors: Akihisa MIKAWA, Tetsuya FUJIOKA, Hideo KANAI, Masamichi YAMADA, Yasunari MIKUTSU, Satoshi TSUCHIYA, Naoyuki ISHIKAWA
  • Publication number: 20140375965
    Abstract: A light source includes a discharge lamp that outputs light, a discharge lamp driver that supplies drive power to the discharge lamp, a cooling unit that cools the discharge lamp, and a control unit that controls the cooling unit, and the control unit controls the cooling unit based on control information representing a relationship a rotation speed of the cooling unit between at least one of temperature information of the discharge lamp and a voltage between electrodes of the discharge lamp.
    Type: Application
    Filed: May 30, 2014
    Publication date: December 25, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Junichi SUZUKI, Yasuhiro TOBA, Tetsuo TERASHIMA
  • Patent number: 8905549
    Abstract: A projection image display apparatus that enlarges and displays an image includes a case, a laser light source, a cooling mechanism that includes a component that produces vibration during an operation, a diffuser that diffuses light emitted from the laser light source, optics that shape the light that is diffused by the diffuser to light having a uniform luminance distribution and a rectangular cross-section, and an optical modulation element that modulates the light shaped by the optics.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: December 9, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Motoyasu Utsunomiya
  • Publication number: 20140354958
    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: Application
    Filed: May 22, 2014
    Publication date: December 4, 2014
    Applicant: Seiko Epson Corporation
    Inventors: Hiroshi Tsuchitani, Kenichi Asami, Masatoshi Ito
  • Publication number: 20140347636
    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: Application
    Filed: August 7, 2014
    Publication date: November 27, 2014
    Inventors: Masamichi YAMADA, Tetsuya FUJIOKA, Yasutada TSUKIOKA, Naoyuki ISHIKAWA, Hideo KANAI
  • Publication number: 20140340653
    Abstract: The purpose of the present invention is to provide a device that is small in size and low noise, in which heat from a light emitting element such as an LD or an LED is efficiently dissipated. A light source device includes a first light emitting element, a base plate, and an air flow device for sending out air. The base plate, which is thermally connected to the first light emitting element, has a flat surface formed around the first light emitting element to face the emitting direction of light output from the first light emitting element. The air flow device generates a flow of air toward the flat surface of the base plate in a direction perpendicular to the flat surface.
    Type: Application
    Filed: September 20, 2012
    Publication date: November 20, 2014
    Inventors: Hiroko Chifu, Motoyasu Utsunomiya
  • Patent number: 8888295
    Abstract: An apparatus projecting or displaying images to a viewer. The apparatus or Pepper's ghost system projects or displays an image stream onto a reflective element with a first surface receiving and reflecting a portion of light associated with the image stream to the viewer and a second surface opposite the first surface. The apparatus includes a cleaning assembly including an air supply providing a volume of flowing air and an ionizing mechanism for receiving the flowing air and outputting an ionized air flow. The ionized air flow is directed over the second surface of the reflective element. The reflective element is positioned at a non-vertical display angle. An outlet of the cleaning assembly is positioned adjacent an upper edge of the reflective element, and the ionized air flow is output from nozzles as laminar air flow with a flow rate chosen to mitigate dust collection on the upper second surface.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: November 18, 2014
    Assignee: Disney Enterprises, Inc.
    Inventors: Curtis Edwards, Thomas LaDuke, Daniel Beaumont
  • Patent number: 8872985
    Abstract: Some embodiments provide for a modular video projector system having a light engine module and an optical engine module. The light engine module can provide narrow-band laser light to the optical engine module which modulates the laser light according to video signals received from a video processing engine. Some embodiments provide for an optical engine module having a sub-pixel generator configured to display video or images at a resolution of at least four times greater than a resolution of modulating elements within the optical engine module. Systems and methods for reducing speckle are presented in conjunction with the modular video projector system.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: October 28, 2014
    Assignee: RED.COM, Inc.
    Inventors: James H. Jannard, Stuart J. English, Gregory Alan Prior, Edmund Sandberg, Ryan Newham
  • Publication number: 20140307232
    Abstract: There is provided a projection-type display device including an excitation light source configured to emit excitation light, a fluorescent member configured to emit fluorescent light when the excitation light from the excitation light source is condensed, a heat sink connected to the excitation light source, a single air blowing fan configured to cool the heat sink and the fluorescent member together, and an excitation light source control unit configured to control an output of the excitation light source, depending on a luminance level of an external video signal.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 16, 2014
    Applicant: Sony Corporation
    Inventors: Yoshihisa Sato, Izushi Kobayashi
  • Patent number: 8857997
    Abstract: An object of the present invention is to provide a portable electronic device which the user can comfortably use by suppressing temperature rise in the surface of the device caused by heat from a heat source. The object is achieved by a portable electronic device including: a first casing; a second casing disposed opposed to one of surfaces of the first casing and capable of changing a position relative to the first casing while maintaining a state where opposed surfaces are opposed; and a heat source disposed in the second casing. Surface of the second casing includes: a first region which is covered with the first casing in a first state where the first and the second casings are opposed and is exposed to the outside in a second state where the position relative to the first casing is changed and area of the opposed surfaces of the first and the second casings decreases from the first state; and a second region which is always exposed to the outside in both of the first and the second states.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: October 14, 2014
    Assignee: Kyocera Corporation
    Inventor: Seiji Horii
  • Patent number: 8851683
    Abstract: Provided is a light source device capable of effectively cooling a bulb included therein. The light source device includes: a luminous tube having a bulb to seal a pair of electrodes that generates light by electric discharging; a reflector formed into a concave surface shape and configured to emit light from the bulb; and an air blowing device that generates a flow of gas to cool the luminous tube.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: October 7, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Eisuke Yamashita
  • Publication number: 20140285775
    Abstract: A light projector for operation during a show that contains theatrical haze. The light projector may include a light source, a lens, a fan, and a housing having an inner chamber. The lens may have a first side and a second side. The first side of the lens may be contained within the inner chamber of the housing. The second side the lens may be outside of the inner chamber of the housing. The fan may be configured to be operated to generate air flow inside the inner chamber of the housing. A substantial portion of the air flow may be directed to impinge upon the first side of the lens to cause de-fogging of theatrical haze condensate on the first side of the lens.
    Type: Application
    Filed: June 3, 2014
    Publication date: September 25, 2014
    Applicant: BARCO LIGHTING SYSTEMS, INC.
    Inventor: Richard S. Belliveau
  • Patent number: 8840283
    Abstract: A light source module is adapted for a projection apparatus. The projection apparatus has a main board. The light source module includes a base, a lighting element, a flexible printed circuit, and a plurality of metal elastic elements. The base has a circuit layer. The lighting element is disposed on the base and electrically connected to the circuit layer. The flexible printed circuit is assembled on the base and electrically connected to the circuit layer. The metal elastic elements are adapted for being fixed to the main board to be contacted with the flexible printed circuit, such that the flexible printed circuit is electrically connected to the main board. The lighting element of the light source module is electrically connected to the main board via the flexible printed circuit and the metal elastic elements, such that a wiring space between the light source module and the main board is reduced.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: September 23, 2014
    Assignee: Coretronic Corporation
    Inventors: Nan-Jiun Yin, Shiuan-Ting Lin
  • Patent number: 8820938
    Abstract: A light source device includes: an arc tube having a light emission portion containing a pair of electrodes and configured to emit light by discharges induced between the pair of the electrodes; and a container body that accommodates the arc tube, the container body has a space in which the arc tube is accommodated, and a plurality of openings through that cooling fluids introduced from the outside of the container body are supplied into the space, the plural openings are formed at positions that allow the cooling fluids passing through the openings to collide with each other at a collision position above the light emission portion.
    Type: Grant
    Filed: March 23, 2011
    Date of Patent: September 2, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Kazuhiro Tanaka, Hiroshi Yamanoi, Michiko Yamasaki, Hiroshi Onodera, Yuichiro Iwama, Toshizo Nishi
  • Patent number: 8807760
    Abstract: The present invention is directed to provide a light source apparatus that includes space-saving LED cooling unit, and a projector type image display apparatus including the same. The light source apparatus of the present invention includes a plurality of LEDs, a plurality of heatsinks that are respectively thermally coupled to the LEDs and that are disposed in series with an interval between each other, and a cooler mechanism that sends a cooling airflow into the heatsinks along their disposition direction. A heatsink included in the plurality of heatsinks that dissipates the heat of an LED having a greater heat generating amount out of the plurality of LEDs is disposed downstream in the cooling airflow from the other heatsink.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: August 19, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Naoki Kanno, Shigenori Shibue, Takuya Kodama, Shigetoshi Ipposhi
  • Publication number: 20140218693
    Abstract: An image projection apparatus includes an optical part disposed in a light path of an projection image; an enclosing unit to enclose the light path of the projection image and having an window for projecting the projection image onto a projection plane; and an air supply unit to supply air into an internal space of the enclosing unit enclosing the light path. Pressure of the internal space of the enclosing unit is kept at a positive pressure with respect to an external pressure of the enclosing unit during an image projection operation.
    Type: Application
    Filed: December 19, 2013
    Publication date: August 7, 2014
    Inventor: Yoshio KUBO
  • Publication number: 20140204345
    Abstract: An image projector in a case, having a light engine, a circuit board, a heat sink assembly, and a fan assembly, has one or more heat sinks and heat pipes shaped to gather heat from all heat-generating components within the projector and a single air passage to receive the heated air combined from all components, allowing the employment of a single fan module in sucking cool air from the exterior and exhausting heated air through the single air passage.
    Type: Application
    Filed: June 5, 2013
    Publication date: July 24, 2014
    Inventors: CHIEN-FU CHEN, ZHI-HAO WU
  • Publication number: 20140204347
    Abstract: A message display that produces a visible message by projecting an image on a surface such as a wall or floor. A bright light source is provided, preferably including an array of light emitting diodes (“LED's”). The light from this bright source is passed through one or more lenses in a condenser assembly to make it more uniform. The light then passes through an image plate that contains a small version of the image to be displayed. Once the light passes through the image plate it next passes through a focusing assembly. The focusing assembly creates a desired projected image on a target surface such as a wall or floor. The projected image is a representation of the image contained on the image plate.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Inventor: Brenda Murphy
  • Patent number: 8770765
    Abstract: A thermal management device (401) is provided which comprises a synthetic jet actuator (403) and a heat sink (405) comprising a fin (407). The fin has at least one interior channel (409) defined therein which has first and second openings that are in fluidic communication with each other. The synthetic jet actuator is adapted to direct a synthetic jet into said channel.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: July 8, 2014
    Assignee: Nuventix, Inc.
    Inventors: Lee M. Jones, Samuel N. Heffington, Raghavendran Mahalingam
  • Patent number: 8770764
    Abstract: A light projector for operation during a show that contains theatrical haze. The light projector may include a light source, a lens, a fan, and a housing having an inner chamber. The lens may have a first side and a second side. The first side of the lens may be contained within the inner chamber of the housing. The second side the lens may be outside of the inner chamber of the housing. The fan may be configured to be operated to generate air flow inside the inner chamber of the housing. A substantial portion of the air flow may be directed to impinge upon the first side of the lens to cause de-fogging of theatrical haze condensate on the first side of the lens.
    Type: Grant
    Filed: January 16, 2012
    Date of Patent: July 8, 2014
    Assignee: Barco Lighting Systems, Inc.
    Inventors: Richard S. Belliveau, David R. Dahly, David Karl Peck
  • Publication number: 20140168617
    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: Application
    Filed: July 19, 2013
    Publication date: June 19, 2014
    Applicant: CORETRONIC CORPORATION
    Inventors: Sheng-Yu Chiu, Jung-Chi Chen
  • Patent number: 8740393
    Abstract: A guiding device and a projector comprising the same are provided. The projector comprises a blower and a bulb. The blower is used for cooling the bulb. The guiding device is disposed between the blower and the bulb, and comprises a body and a flapper. The body of the guiding device is formed with a first outlet and a second outlet. The first outlet and the second outlet are adapted to guide the blower to form a first airflow and a second airflow, respectively. The flapper is disposed in the second outlet and moves along a direction of gravity to partially cover the second outlet to force the second airflow to flow towards a portion of the bulb away from the direction of gravity.
    Type: Grant
    Filed: June 22, 2011
    Date of Patent: June 3, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Chia-Jui Lin, Hsiu-Ming Chang, Hui-Chih Lin
  • Publication number: 20140125958
    Abstract: A projector includes a case, a light emitting module, a light projecting module, two dissipation sinks, and a fan. The case includes a right sidewall and a left sidewall opposite to the right sidewall. The right sidewall defines an air inlet, and the left sidewall defines an air outlet opposite to the air inlet. The light emitting module includes a light source emitting light rays. The light projecting module includes a digital micro device (DMD) reflecting the light rays emitted from the light emitting module. The two dissipation sinks are positioned between the air inlet and the left inlet, one of the dissipation sinks is attached on the light source, and another dissipation sink is attached on the DMD. The fan is positioned between the air inlet and the air outlet.
    Type: Application
    Filed: April 30, 2013
    Publication date: May 8, 2014
    Applicant: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: MING-CHIH SUN, KAI HUANG
  • Publication number: 20140111777
    Abstract: A projector includes an optical part including a light source section that outputs light, a light modulator that modulates the light outputted from the light source section based on an image signal, a projection optical section that projects the modulated light from the light modulator, a first fan that cools the optical part, and a fan controller that controls the first fan, and the fan controller operates the first fan intermittently when the light source section outputs light of luminance lower than luminance corresponding to normal image display.
    Type: Application
    Filed: October 15, 2013
    Publication date: April 24, 2014
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takahiro MIYATA
  • Patent number: 8702242
    Abstract: A projector includes a wireless device performing a predetermined function, an external housing which accommodates a light modulation device, a first controller, and the wireless device, an intake fan which introduces air outside the external housing into the external housing through an inlet port, an exhaust fan which discharges the air introduced into the external housing through the inlet port to the outside through an outlet port, a first channel which guides the air introduced through the inlet port toward the light modulation device by the drive of the intake fan, and a second channel which guides the air introduced into the external housing toward the exhaust fan via the wireless device by the drive of the exhaust fan.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: April 22, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Kiyomasa Shirakura
  • Patent number: 8696139
    Abstract: A projector includes: a cooling device which supplies cooling air to a cooling target, wherein the cooling device includes a plurality of cooling fans each of which discharges cooling air, and a plurality of ducts each one end of which is connected with the corresponding one of the plural cooling fans to introduce the cooling air toward the cooling target in directions different from each other, and the plural ducts communicate with each other at the other end and have an outlet port through which the cooling air flows out.
    Type: Grant
    Filed: March 16, 2011
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Yohei Sakai, Norikazu Kadotani
  • Patent number: 8696138
    Abstract: A filter unit includes an air filter, which captures dust from intake air, and a cleaning unit, which automatically cleans the air filter. The cleaning unit includes a rotation brush, which removes dust from the air filter, and a dust box, which extends parallel to the rotation brush. The dust box includes a dust inlet that opens toward the rotation brush and receives dust from the rotation brush. The dust box is removable from the filter unit.
    Type: Grant
    Filed: June 6, 2011
    Date of Patent: April 15, 2014
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Yosuke Nishihata, Akira Miyanaga, Yoshiharu Arioka, Hideaki Okaniwa
  • Patent number: 8690346
    Abstract: The object of the invention is to realize highly efficient cooling by enhancing the heat transfer rate between optical parts and cooling air, and by simultaneously lowering the temperature of atmosphere around the optical parts. For this purpose, a first wind outlet for blowing a cooling wind is provided so as to allow the cooling wind to pass through optical parts, and furthermore, a second wind outlet for blowing another cooling wind so as to interfere with the cooling wind from the first wind outlet at the optical parts is provided at a location different from that of the first wind outlet.
    Type: Grant
    Filed: May 22, 2008
    Date of Patent: April 8, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Yusuke Tani
  • Patent number: 8690347
    Abstract: A cooling device and a projection device comprising the same are provided. The projection device comprises a lamp and a cooling device. The lamp has a first side and a second side opposite the first side, and one of the two sides is the upper side of the lamp. The cooling device comprises a first blower and a second blower. The first blower is adapted to generate a first airflow towards the first side, while the second blower is adapted to generate a second airflow towards the second side.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: April 8, 2014
    Assignee: Delta Electronics, Inc.
    Inventors: Chia-Jui Lin, Hsiu-Ming Chang
  • Publication number: 20140085612
    Abstract: An illumination system adapted to be used in a projection apparatus is provided. The illumination system includes a solid-state light source group, a cooling module, and an ion fan. The cooling module is thermally coupled to the solid-state light source group. The cooling module is located on a path of a forced convection air generated by the ion fan. Moreover, the invention further discloses a projection apparatus including the aforementioned illumination system, and the projection apparatus avails prolonging a life time of the illumination system, and the ion fan does not have a magnetic shearing sound of a motor and a wind shearing sound of fan blades to avail reducing an operation noise of the illumination system.
    Type: Application
    Filed: April 12, 2013
    Publication date: March 27, 2014
    Applicant: CORETRONIC CORPORATION
    Inventors: Shang-Hsuang Wu, Jhih-Hao Chen, Tsung-Ching Lin, Wen-Yen Chung
  • Publication number: 20140078409
    Abstract: A projection apparatus for projection in a liquid environment comprises a projection surface adapted to be positioned in the liquid environment and a projector adapted to be positioned in the liquid environment. The projector is adapted to project an image on the projection surface.
    Type: Application
    Filed: January 23, 2013
    Publication date: March 20, 2014
    Applicant: Scienstry, Inc.
    Inventor: Jiansheng Wang
  • Patent number: 8667702
    Abstract: A domestic appliance includes an open air duct and a flow cross-section adjuster in the air duct for adjusting a flow cross-section of the air duct. The flow cross-section adjuster includes rotatably mounted blades for noise dampening purpose. The air duct and the flow cross-section adjuster are in a cooling air inflow region relative to a heat exchanger or a compressor of the domestic appliance.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: March 11, 2014
    Assignee: BSH Bosch und Siemens Hausgerate GmbH
    Inventors: Rainer Ediger, Thomas Nawrot, Werner Nühse
  • Patent number: 8662674
    Abstract: Provided is a method for controlling a cooling device that includes pump (1) having pump characteristics defined by a relationship between the number of revolutions and a pressure value, and cooling fan (5), and the cooling device cools an object to be cooled by a cool wind generated by injecting air compressed by pump (1) and a cooling wind of cooling fan (5). The method includes: preparing beforehand a first parameter to associate an altitude with a change rate d of a gradient of the pump characteristics at one altitude with respect to a gradient of the pump characteristics at another altitude; and controlling the numbers of revolutions of pump (1) and cooling fan (5) based on an altitude calculated from the first parameter and the change rate d.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: March 4, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Takeshi Katou
  • Publication number: 20140036238
    Abstract: A projection image display apparatus that enlarges and displays an image includes a case, a laser light source, a cooling mechanism that includes a component that produces vibration during an operation, a diffuser that diffuses light emitted from the laser light source, optics that shape the light that is diffused by the diffuser to light having a uniform luminance distribution and a rectangular cross-section, and an optical modulation element that modulates the light shaped by the optics.
    Type: Application
    Filed: October 2, 2013
    Publication date: February 6, 2014
    Applicant: NEC Display Solutions, Ltd.
    Inventor: Motoyasu Utsunomiya
  • Patent number: 8641200
    Abstract: A projection type display device includes a lamp, polarization means (21) for converting light emitted from the lamp to polarized light, a liquid crystal panel for modulating the polarized light to form an image light, a projection lens (7) for projecting the image light, fans (11R, 12G, 23B) for taking outside air in and for supplying the outside air to the polarization means and the liquid crystal panel, a filter for collecting dust contained in the outside air, a first detection means for detecting temperature T1 of the outside air, a first control means for controlling the number of revolutions of the fan in response to temperature T1, a second detection means for detecting temperature T2 of the polarization means, a storage means for storing reference temperature T3, and a second control means. The second control means issues a warning or stops the projection type display device when temperature T2 is higher than reference temperature T3.
    Type: Grant
    Filed: August 15, 2008
    Date of Patent: February 4, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Takayuki Okada
  • Patent number: 8641201
    Abstract: A heat dissipation module includes a base, a lamp, a fan, an orientation-sensing element and a motor. The lamp is disposed on the base, and the fan is disposed on the base for inducing an air flow and cooling down the lamp. The orientation-sensing element generates an orientation signal, and the motor rotates the base according to the orientation signal to allow the base to be substantially parallel to a horizontal plane. A rotational axis of the motor is substantially aligned with a central axis of the lamp.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: February 4, 2014
    Assignee: Coretronic Corporation
    Inventors: Tung-Yi Ko, Tzu-Tse Huang
  • Patent number: 8608316
    Abstract: An image projection apparatus is disclosed which is capable of reducing noise when airflows from plural flow paths are taken in into a fan and exhausted therefrom. The apparatus comprises a first flow path through which a first airflow for cooling a light source passes, a second flow path through which a second airflow for cooling constituent parts other than the light source passes, a fan which exhausts air introduced from the first and second flow paths to the outside of the apparatus, a third flow path which introduces a third airflow to an exhaust area between the light source and the fan in the first flow path, and a light-shielding member which is provided in the exhaust area and shields the light from the light source.
    Type: Grant
    Filed: August 1, 2012
    Date of Patent: December 17, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyuki Noda, Shin-Ichi Katsumata
  • Patent number: 8604933
    Abstract: Systems and methods for safe handling of information handling resources are provided. In some embodiments, a method is provided. The method may include detecting occurrence of a power down sequence and in response to detecting of the power down sequence, controlling operation of a cooling fan coupled to information handling resources based at least on a first criteria of a predetermined policy. The method may include receiving a signal from a sensor, the signal indicating a thermal property of a particular information handling resource coupled to the sensor. The method may include determining if the thermal property satisfies a second criteria of the predetermined policy, the second criteria comprising a safe temperature range for handling the particular information handling resource. If the thermal property meets the second criteria, the method may provide an alert via an indicator to a user indicating the particular information handling resource is safe for handling.
    Type: Grant
    Filed: January 4, 2013
    Date of Patent: December 10, 2013
    Assignee: Dell Products L.P.
    Inventors: Stuart Allen Berke, Dominick A. Lovicott, Hasnain Shabbir, William K. Coxe, III
  • Patent number: 8596797
    Abstract: In one embodiment, a light source device comprises a container with a duct unit disposed above an arc tube and extends along the center axis of light reflected by a reflection surface such that cooling air can flow in a direction opposite to the traveling direction of light reflected by the reflection surface. The duct unit includes a first opening disposed at a position shifted toward the traveling direction side from an opening end of the first reflection mirror, a wall portion which forms the edge of the first opening on the side opposite to the traveling direction side as a final end of the duct unit, and an inclined portion disposed in the vicinity of the edge of the first opening on the traveling direction side to bend the flowing direction of the cooling air toward an upper surface opposite to the surface having the first opening.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: December 3, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Onodera, Takahiro Takizawa
  • Publication number: 20130314673
    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, and a plurality of outlet ports communicating with the plural corresponding introduction ports, the outlet ports through which the introduced cooling air goes out; and an opening and closing device opening and closing the plural introduction ports. The plural introduction ports are disposed around a center shaft of the opening and closing device. The plural outlet ports are disposed along an opening of the reflector. The opening and closing device has a rotating member which rotates in accordance with the position of the light source device to selectively open and close the plural introduction ports.
    Type: Application
    Filed: May 7, 2013
    Publication date: November 28, 2013
    Applicant: Seiko Epson Corporation
    Inventor: Yasushi Tateno
  • Patent number: 8591037
    Abstract: A projector includes: an external housing; and an exhaust fan configured to suck an air within the external housing and discharges the sucked air to the outside, the external housing has a top and bottom surface crossing a vertical axis, an air discharge port through that the air discharged from the exhaust fan is discharged to the outside, and a side surface that connects the top surface and the bottom surface, the exhaust fan constituted by a turbo fan that has an impeller rotatable around a predetermined rotation axis, and the rotation axis extends along the vertical axis.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: November 26, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Toshihiko Nagumo, Hideki Takasuka
  • Publication number: 20130278905
    Abstract: In priority art, the projector emits light through lens and other optical devices to display devices for projecting images. Such devices produce a lot of heat. Present cooling model structure must use over 2 fans to reduce the working temperature of the projector and keep the projector functional. However, it cause increasing of electricity consuming and the price of production. The invention use only one fan and exhaust the heat by the combination of heat conductive nugget (33) and heat conductive object (32) for reducing working temperature and keep the projector functional.
    Type: Application
    Filed: April 24, 2012
    Publication date: October 24, 2013
    Inventors: Tze-Yun Sung, Chih-Der Chuan
  • Patent number: 8562143
    Abstract: A projection display device that modulates light on the basis of image information to form an optical image, and that projects the formed optical image, includes: light source devices 10R, 10G and 10B; optical modulation device 50 that modulates lights emitted from light source devices 10R, 10G and 10B; and common metal plate 70 on which light source devices 10R, 10G and 10B and optical modulation device 50 are mounted, light source devices 10R, 10G and 10B and optical modulation device 50 being thermally connected via metal plate 70.
    Type: Grant
    Filed: September 9, 2009
    Date of Patent: October 22, 2013
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Kenji Miyazaki
  • Patent number: 8562144
    Abstract: An image projection device includes a replaceable air filter placed near an opening of a housing, a switcher for switching step by step a working area of the air filter, an air-speed meter for detecting a pollution level of the air filter, and a controller for controlling the switcher. When the air-speed meter detects that the pollution level of the air filter reaches a given threshold, the controller prompts the switcher to switch the working area of the air filter, and then detects a pollution level of the air filter after the switchover for determining whether or not the working area before the switchover needs to be switched.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: October 22, 2013
    Assignee: Panasonic Corporation
    Inventors: Yoshinobu Nakajima, Mamoru Nomoto, Masaya Yamamoto
  • Patent number: 8562149
    Abstract: A digital micromirror device module includes a flexible connection device, a digital micromirror device and a connecting interface. The flexible connection device includes a plurality of conducting wires and an external insulation layer, wherein the conducting wires are discretely arranged and encapsulated by the external insulation layer. The digital micromirror device unit is disposed on the external insulation layer of the flexible connection device and electrically connected with the conducting wires of the flexible connection device. The connecting interface is arranged at a lateral end of the flexible connection device and connected with the conducting wires.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 22, 2013
    Assignee: Delta Electronics, Inc.
    Inventors: Chia-Chen Hu, Yuan-Ming Hsu
  • Publication number: 20130271736
    Abstract: A projector includes a light source lamp, a lighting control unit adapted to supply a lamp electric power to turn on the light source lamp, a cooling unit adapted to send a cooling fluid to cool the light source lamp, and a start control unit adapted to, from the start of turn-on of the light source lamp until a predetermined period elapses, adjust at least one of the length of the predetermined period and a limited flow rate, which is the flow rate of the cooling fluid per unit time sent from the cooling unit within the predetermined period, on the basis of an operation history of the light source lamp to control the operation of the cooling unit.
    Type: Application
    Filed: December 19, 2011
    Publication date: October 17, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tetsuo Terashima, Shunsuke Hino
  • Patent number: 8550633
    Abstract: A projection-type image display apparatus that enlarges and displays an image includes: a case, a laser light source, a cooling mechanism that includes a component that produces vibration during operation, a diffuser that diffuses light that is emitted from the laser light source, optics that shape light diffused by the diffuser to light having a uniform luminance distribution and rectangular cross-section, and an optical modulation element that modulates light shaped by the optics; wherein the component included in the cooling mechanism and the diffuser are connected by way of a vibration transmitting member.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: October 8, 2013
    Assignee: NEC Display Solutions, Ltd.
    Inventor: Motoyasu Utsunomiya
  • Publication number: 20130250250
    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: Application
    Filed: October 4, 2012
    Publication date: September 26, 2013
    Inventors: Tsung-Ching Lin, Te-Tang Chen, Wen-Yen Chung