Air Directed Against Face Or Back Of Object Patents (Class 353/60)
  • Patent number: 9547223
    Abstract: An air filter includes a filter body configured to trap dust contained in air passing therethrough and a holding frame configured to surround an end edge of the filter body, and the holding frame is formed of a resilient material. The holding frame includes a first surface on a proximal end side in a direction of travel of air passing through the filter body, and a second surface on a distal end side in the direction of travel, and one of the first surface and the second surface is provided with a projecting portion.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: January 17, 2017
    Assignee: Seiko Epson Corporation
    Inventor: Kiyotaka Nakano
  • Patent number: 9103533
    Abstract: A studio lamp apparatus includes a housing structure including front and back ends, and an interior region between the front and back ends. The apparatus also includes a support structure coupled to the housing structure, which holds the housing structure in a suspended state. The apparatus includes a Fresnel lens coupled to the front end and a plurality of vents on the back end. The apparatus includes a lamp assembly within a portion of the interior region. The lamp assembly may have a reflector device operably coupled to a lamp device that has a resonator structure and a bulb including a fill material coupled to the resonator structure. The lamp device may also have an RF probe coupled to the bulb to supply power to the fill material and a focusing device between the Fresnel lens and the lamp assembly.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: August 11, 2015
    Assignee: Vylite LLC
    Inventor: Binith R. Shah
  • 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: 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: 9022574
    Abstract: Provided is a projection type display device that has dust-proof and coolable optical components. According to an aspect of the present invention, the display device includes a case, a dust-proof structure that has a plurality of walls surrounding a plurality of optical components to prevent dust, and which is located in the case, and suction ports (7b and 7b?) formed in the case and configured to suck cooling air along one wall of the dust-proof structure to cool the optical components. The suction ports are separated into first suction port (7b) and second suction port (7b?) with a position of one wall set as a reference. First suction port (7b) is located to blow the cooling air to the dust-proof structure, while second suction port (7b?) is located to prevent direct blowing of the cooling air to the dust-proof structure. An area of first suction port (7b) is smaller than that of second suction port (7b?).
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: May 5, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yoshifumi Nishimura, Takayuki Okada
  • 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: 9016869
    Abstract: An optical device includes: a light modulation unit configured to modulate a light according to image information, including an element substrate having a pixel electrode and a switching element connected with the pixel electrode, and an opposed substrate disposed opposed to the element substrate; a frame configured to hold the light modulation unit; and an incident side dustproof glass disposed in close contact with a light incident side end surface of the opposed substrate, the incident side dustproof glass having the plane size larger than the plane size of the opposed substrate is disposed on the light incident side of the frame.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: April 28, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Akira Egawa, Kaname Nagatani, Kunihiko Takagi, Tetsuo Shimizu
  • 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: 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
  • 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
  • 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: 8882276
    Abstract: Methods and systems are provided for providing asymmetrical cooling for projectors. The projector can include two light assemblies, with each light assembly including a light source. The light assemblies are arranged horizontally adjacent to each other having both light assemblies facing in a direction of projected light from the light sources. On an outer side opposite the side adjacent to the other light assembly, each light assembly is accompanied by a pair of fans. One fan provides air to a top of the light assembly, and the other fan provides air to a bottom of the light assembly. More cooling air is provided to a top of the light assembly to cool a part of the light source that is hotter than the bottom part of the light source due to natural convection. The fan speeds can be varied based on a temperature measurement (e.g., using calibration tables) and/or based on other inputs.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: November 11, 2014
    Assignee: Projection Design AS
    Inventors: Ellen Nordgård-Hansen, Freddy Agnalt
  • Patent number: 8827462
    Abstract: The present invention provides an image display apparatus that inhibits deterioration of image quality caused by an increase in temperature of a laser light source apparatus. The image display apparatus of the present invention has a green color laser light source apparatus, a red color laser light source apparatus, a blue color laser light source apparatus, and a projection mouth in a first case. The first case has a fin on a side surface opposite to a projection mouth of the first case. The fin is provided in an air passage, the fin dissipating heat generated from laser light source apparatuses of each color and transferred via the first case.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: September 9, 2014
    Assignee: Panasonic Corporation
    Inventors: Hirofumi Enomoto, Kohei Suyama, Yoshihiro Teshima, Nobuo Jikuya
  • 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
  • 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: 8757811
    Abstract: A projector includes a plurality of light modulation devices and a cooling device. The cooling device includes a cooling fan configured to introduce and discharge air, and a duct configured to guide air received from the cooling fan toward the plural light modulation devices. The duct includes a first duct portion configured to allow the air to flow through the light modulation devices from sides of the light modulation devices, and a second duct portion which communicates with the first duct portion and guides a part of the air flowing through the first duct portion toward devices other than the light modulation devices.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: June 24, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Akira Egawa, Yasushi Tateno, Fumihide Sasaki
  • 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
  • Patent number: 8740392
    Abstract: An electricity storage section that stores power from an external power source and supplies the stored power as operating power is provided, and, when an interruption of the external power source to a projection display device is detected, control to reduce the power consumption of a device main body and control to drive an exhaust port shutter so that it is closed by the power supplied from the electricity storage section are performed.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: June 3, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Takeshi Furihata, Hirokazu Kamatori, Shigehiro Yanase
  • Patent number: 8712326
    Abstract: A projector includes a first serial advanced technology attachment connector, a latch, a switch, and a communication module. The first serial advanced technology attachment connector is configured to connect with a second serial advanced technology attachment connector located within a computer. The latch is configured to extend from the projector and to disconnect the first serial advanced technology attachment connector from the second serial advanced technology attachment connector. The switch is in communication with the latch, and is configured to close when the latch is extended. The communication module is in communication with the switch and with the first serial advanced technology attachment connector. The communication module is configured to provide power to a radio link, to initiate communication with the computer via the radio link, to receive an image from the computer, and to display the image.
    Type: Grant
    Filed: December 31, 2009
    Date of Patent: April 29, 2014
    Assignee: Dell Products, LP
    Inventors: Samuel Nicklaus D'Alessio, Kurt Heggland
  • 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: 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
  • Patent number: 8678597
    Abstract: It is possible to reliably prevent dust particles from becoming attached to optical components and it is also possible to suppress temperature rises in optical components. A projection type display device according to the present invention includes a plurality of optical components (20, 21, 24, 30, and so on), a hollow structure (45, 50, or the like), and an air blow source (19, 46, or the like). The plurality of optical components are provided along the optical axis direction of light emitted from a light source. The hollow structure includes optical components (20, 24) that are to be protected from the attachment of dust particles to optical components among the plurality of optical components, and forms an enclosed space separated from the surroundings. Then, the source that blows air is provided in the inside of the enclosed space to circulate the internal air for cooling targets.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: March 25, 2014
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yoshifumi Nishimura, Takayuki Okada
  • 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
  • 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: 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
  • 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
  • Patent number: 8540374
    Abstract: A projector includes: an optical modulation device configured to modulate an incident luminous flux; a projection optical device configured to project the luminous flux modulated by the optical modulation device; and a cooling device configured to cool the optical modulation device, wherein the cooling device includes a cooling fan, and a duct having a discharge portion that causes the air discharged from the cooling fan to circulate in a direction approximately parallel to the optical axis, and discharges it to a lateral side of the optical modulation device, and the duct is disposed in a state that, when the projection optical device and discharge portion are cut by a plane perpendicular to the optical axis, the height position of a first center between the upper end and lower end of the cross-section of the discharge portion and that of the optical axis differ from one another.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: September 24, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Akira Egawa, Yasushi Tateno, Fumihide Sasaki
  • Patent number: 8529656
    Abstract: A projection display device includes: a leg section that supports a main body of the projection display device with respect to an installation surface on which the main body is installed; and a filter section that is disposed on a bottom of the main body and exposes a first air intake surface to the outside. In this arrangement, the first air intake surface is inclined with respect to the bottom surface of the main body in a direction that departs from the installation surface, and air flows into the filter section through a clearance between the first air intake surface and the installation surface.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: September 10, 2013
    Assignees: SANYO Electric Co., Ltd., SANYO Technology Center (Shenzhen) Co., Ltd.
    Inventors: Yuji Hashiba, Toshihiro Saruwatari, Lei Zhang
  • Patent number: 8523365
    Abstract: A light source device includes: an arc tube having a bulb portion and a sealing portion; a reflector which fixes the arc tube; and a holding portion which holds the reflector, wherein the holding portion includes an inlet port, a partition provided between the inlet port and the arc tube, a pair of passages to which diverges in the partition and can circulate the cooling air to the arc tube, a first opening provided in the partition, and a shutter which is provided on that side of the partition where the inlet port is located, rotates about a rotation axis, and blocks a lower passage of the pair of passages, and on that side of the shutter where the rotation axis is located, a second opening is provided so as to overlap the first opening as seen from the inlet port.
    Type: Grant
    Filed: July 6, 2011
    Date of Patent: September 3, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Satoru Nagarekawa, Kiyotaka Nakano
  • 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: 8487977
    Abstract: A video conference system provides “in the room” telepresence to near end participants. The video conference system includes a frameless or bezelless display device placed in front of a front wall for displaying edge-to-edge 3D images of far end participants. Color of the near end front wall is configured to be the same as the color of the far end rear wall. As a result, images displayed on the display device can merge or blend into the near end front wall, giving the near end participants the perception that the far end participants are actually in the near end conference room. Brightness of the faces/bodies of the near end participants can also be adjusted to match the brightness of the face/bodies of the images of the far end participants as they appear on the display device—therefore enhancing the in the room perception of the far end participants.
    Type: Grant
    Filed: January 26, 2010
    Date of Patent: July 16, 2013
    Assignee: Polycom, Inc.
    Inventors: Youssef Saleh, Gopal Paripally
  • Patent number: 8469521
    Abstract: A projector includes: a plurality of reflection type light modulation devices which modulates a corresponding color light; a color synthesize optical device which has a plurality of light entrance side surfaces and a crossing surface to combine the received color lights; a heat sink which has a base attached to the corresponding reflection type light modulation device, and a fin protruding from the base and extending in a direction crossing the crossing end surface; and a duct member disposed at a position opposed to the crossing surface to supply introduced air toward the heat sink, wherein the duct member includes a first outlet section disposed opposed to the fin such that the introduced air can be supplied toward the base through the first outlet section, and a second outlet section through which the introduced air is supplied in the extending direction of the fin.
    Type: Grant
    Filed: June 14, 2011
    Date of Patent: June 25, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Shingo Otsuka, Toshimitsu Watanabe, Masato Kadotani
  • Patent number: 8454170
    Abstract: A projector includes a plurality of lamps serving as light sources, the lamps being arranged next to each other, and a single exhaust fan disposed adjacent to the lamps, the exhaust fan discharging air around the lamps.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: June 4, 2013
    Assignee: Sony Corporation
    Inventors: Koji Okamoto, Kohei Kabuki
  • Patent number: 8425045
    Abstract: A light source includes: light-emitting portion having a discharge space in the interior thereof; an arc tube having first and second sealing portions provided on both sides of the light-emitting portion along an optical axis; a reflector arranged so that a center where the optical axis passes is located on the side of the first sealing portion with respect to the light-emitting portion and configured to reflect a luminous flux emitted from the light-emitting portion; and an air flow control unit arranged on the side of the reflector in the direction of the optical axis with respect to inflection points at a connecting portion between the light-emitting portion and the first sealing portion, extending respectively along a plane including the optical axis, and including at least two panel-shaped members extending not in parallel to each other and forming a predetermined angle.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: April 23, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Susumu Wada
  • Patent number: 8408715
    Abstract: A projector with single fan including a casing, a heat source, a light source module and an axial-flow fan are provided. The casing has an air outlet and a first air inlet. The heat source, the light source module and the axial-flow fan are disposed in the casing. The light source module includes a lamp shade and a light-emitting part. The axial-flow fan is disposed in a light outgoing side of the light source module and has an airflow inlet and an airflow outlet. When the axial-flow fan is operating, a first airflow is generated. After flowing through the heat source, the first airflow enters the airflow inlet and generates a second airflow. The second airflow, blown out from the airflow outlet, dissipates the heat generated by the light source module and then flows out to the outside of the casing.
    Type: Grant
    Filed: July 16, 2010
    Date of Patent: April 2, 2013
    Assignee: Qisda Corporation
    Inventor: Chi-Hung Hsiao
  • Patent number: 8403499
    Abstract: A light source lamp cooling apparatus according to the present invention includes: diaphragm air compressor (31); an ejector which ejects cooling air directly onto a portion to be cooled of a light source lamp in lamp unit (10); pressure detector (43) which detects pressure of the cooling air by means of pressure sensor (42) inserted in piping; air piping which connects air compressor (31) and the ejector; and a lamp controller which controls turning off of the light source lamp according to the air pressure detected by pressure detector (43). Air compressor (31) is driven at a high control frequency and a hollow, flexible silicon tube is used as air piping to reduce pulsation of air.
    Type: Grant
    Filed: September 13, 2007
    Date of Patent: March 26, 2013
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yoshifumi Nishimura, Hiroaki Takamatsu, Takayuki Okada
  • Patent number: 8403497
    Abstract: The invention discloses a projector including a casing, an optical module, a light source module, a blowing fan, and an axial fan. The casing has a first air-outlet, a second air-outlet, and an air-inlet. The blowing fan and the axial fan are disposed corresponding to two sides of a light axis of the light source module respectively. When the blowing fan operates, an initial airflow into the casing from the air-inlet flows through the optical module and then a predetermined airflow generated by the blowing fan on a first air-outlet surface of the blowing fan cools the light source module. An angle is formed between the axial fan and one side of the casing. The axial fan directly sends the air around the light source module out of the casing through the first air-outlet and/or the second air-outlet.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: March 26, 2013
    Assignee: Qisda Corporation
    Inventors: Chi-Hung Hsiao, Tsung-Hsun Wu
  • Patent number: 8388142
    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: October 11, 2007
    Date of Patent: March 5, 2013
    Assignee: Nuventix, Inc.
    Inventors: Lee M. Jones, Samuel N. Heffington, Raghavendran Mahalingam
  • Patent number: 8388143
    Abstract: A projection display device includes a light source, a reflector, and a fixing portion. The device further includes a first air supply portion and a second air supply portion; a first air drawing portion which separates the cooling air from the first air supply portion into streams of the cooling air to guide one of the streams into an interior of the reflector in a first direction and to guide the other of the streams to the fixing portion in a second direction; and a second air drawing portion which separates the cooling air from the second air supply portion into streams of the cooling air to guide one of the streams into the interior of the reflector in a third direction and to guide the other of the streams to the fixing portion in a fourth direction.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: March 5, 2013
    Assignees: SANYO Electric Co., Ltd., SANYO Technology Center (Shenzhen) Co., Ltd.
    Inventors: Jieming Liang, Chen Chen, Lei Cao, Wenming Wu, Wentian Tang, Xianglin Zhang
  • Patent number: 8388141
    Abstract: An electric apparatus includes a centrifugal fan that includes an impeller in a casing, and is configured to draw air when the impeller rotates in the casing, and to have a blowoff channel of the air from the impeller in the casing, which spreads in a rotating direction of the impeller, and a first cooled part and a second cooled part that has a necessary cooling air capacity larger than that of the first cooled part, the first cooled part and the second cooled part being cooled by the air drawn by the centrifugal fan, wherein a drawing surface of the centrifugal fan has a first drawing area and a second drawing area that has a drawing speed higher than that of the first drawing area when the impeller rotates.
    Type: Grant
    Filed: January 30, 2009
    Date of Patent: March 5, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Junichi Tanaka
  • Patent number: 8342692
    Abstract: A projector includes a light source unit, a light source side optical system which includes a color wheel and a light guiding unit, a display device, a projection side optical system, a cooling fan, and a projector control unit. An interior of a projector casing is divided into an outlet side spatial compartment which is positioned on an outlet side of the cooling fan and in which the light source unit is disposed and an inlet side spatial compartment which is positioned on an inlet side of the cooling fan. The outlet side spatial compartment is covered thereabove by an upper division board, above which a heat conductive sheet which is formed of an aluminum sheet is disposed. The heat conductive sheet is electrically connected to the projector casing, so that electricity charged in the heat conductive sheet can be discharged.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: January 1, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventors: Shigeru Hirosawa, Toshiyasu Tsubura
  • Patent number: 8322861
    Abstract: A lamp source module includes a holder having an air inlet and an air outlet, a gas discharge lamp having a lamp reflector assembled onto the holder and a burner disposed in the lamp reflector, a light cover assembled on the holder and surrounding the lamp reflector, a blower duct communicating with the air inlet and extending along the exterior of the lamp reflector to the bottom of the lamp reflector, and an airflow generator communicating with the blower duct and capable of providing a cooling airflow. The air inlet is capable of causing the cooling airflow to enter the blower duct. The blower duct is capable of directing the cooling airflow to the bottom of the lamp reflector to make the cooling airflow pass through a sandwiched space surrounded by the lamp reflector and the light cover and then discharge from the air outlet.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 4, 2012
    Assignee: Young Green Energy Co.
    Inventors: Te-Ying Tsai, Shang-Hsuang Wu, Chih-Cheng Chou, Yi-Kuan Liao
  • 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: 8317336
    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: January 30, 2007
    Date of Patent: November 27, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyuki Noda, Shin-ichi Katsumata
  • Patent number: 8308303
    Abstract: A projector includes: spatial light modulation devices; and a cooling duct configured to flow a cooling air for sequentially cooling the spatial light modulation devices, the cooling duct has a first flow path formed by portions including the light entrance surface of at least one of the spatial light modulation devices for the respective color lights, a second flow path formed by portions including the light exit surface of the corresponding spatial light modulation device, and a junction area where the cooling air flowing through the first flow path and the cooling air flowing through the second flow path join each other, and the junction area is disposed at a downstream position of the cooling air with respect to the spatial light modulation device provided for a predetermined color light whose light amount is the maximum in the respective color lights that enter the light entrance surface.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: November 13, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Kunihiko Takagi, Kaname Nagatani, Akira Egawa, Tetsuo Shimizu, Joji Karasawa, Fumihide Sasaki
  • Patent number: 8303118
    Abstract: A video projector includes a first discharge port from which a cooling current is sent out of a duct to an optical component. A cooling fan generates the cooling current which flows through the duct. The first discharge port includes first and second wall surfaces opposed to each other in an optical axis direction in which the light is transmitted through the optical component, third and fourth wall surfaces opposed to each other in a lateral direction perpendicular to the optical axis direction, a discharge port inlet into which the cooling current from the cooling fan is drawn, and a discharge port outlet from which the cooling current is sent toward the optical component. A gap between the first and second wall surfaces and a gap between the third and fourth wall surfaces become narrower from the discharge port inlet to the discharge port outlet.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: November 6, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Kazuya Minami
  • Patent number: 8287135
    Abstract: A light source device, includes: an arc tube which has a light emission portion containing a pair of electrodes disposed along an illumination axis, and a pair of sealing portions extending from both sides of the light emission portion; a reflector which has a reflection portion disposed in the vicinity of one of the sealing portions (the one sealing portion) of the arc tube for reflecting light emitted from the arc tube toward an illumination area; and a rectifying portion disposed between the light emission portion and the reflector for regulating a flow direction of cooling air and transmitting the light from the arc tube.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: October 16, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Takeshi Takezawa
  • Patent number: 8282218
    Abstract: A projector includes a light source device; an exhaust fan configured to take air in the vicinity of the light source device in and discharge the same; a power supply device configured to supply electric power to components of the projector; an outer casing configured to accommodate the light source device and the power supply device in the interior thereof and provided with an exhaust port formed thereon; and a first duct configured to guide the air discharged from the exhaust fan to the exhaust port, and the power supply device includes a second duct configured to guide the air in the interior of the power supply device toward the first duct, and an air incoming port configured to take the air discharged from the second duct into the first duct is formed with the first duct.
    Type: Grant
    Filed: July 9, 2009
    Date of Patent: October 9, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Mika Koyama, Kiyotaka Nakano
  • Patent number: 8282215
    Abstract: A spatial light modulation device includes: a light modulation unit which modulates light according to an image signal; and a first electrode and a second electrode provided on a surface of one of an optical element disposed either on the entrance side of the light modulation unit or the exit side of the light modulation unit and the light modulation unit. Voltage is applied to the first electrodes and the second electrodes.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: October 9, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Akira Egawa