Blower Patents (Class 353/57)
  • Publication number: 20130250251
    Abstract: A second projector is configured to be able to connect with a first projector via a USB cable including a VBUS line. The second projector includes an image projecting unit that modulates light emitted from a light source and projects the light, a USB communication unit that detects, in a standby state, the supply of power via a VBUS from the first projector, and a control unit that performs control to switch an operating state of the second projector between the standby state and a normal operating state. When the supply of power of the VBUS is detected by the USB communication unit, the control unit activates the second projector from the standby state to the normal operating state.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 26, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Shinji Kubota
  • 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: 8540377
    Abstract: A light source device, includes: an arc tube having a tube spherical portion containing a pair of electrodes disposed along an illumination axis, and a pair of sealing portions extending from both sides of the tube spherical portion; a reflector having a reflection portion disposed in the vicinity of one of the sealing portions of the arc tube for reflecting light emitted from the arc tube toward an illumination area; and a flow regulating unit including a plurality of projecting portions projecting in a direction approximately along the illumination axis to regulate the flow direction of cooling air, and a fixing portion for fixing the plural projecting portions to one of the sealing portions in the vicinity of the tube spherical portion.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: September 24, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Takuji Kawai
  • Patent number: 8534846
    Abstract: A projection apparatus and a method for adjusting a driving voltage of the projection apparatus are provided. The projection apparatus comprises an illuminant module, an output voltage control module, an illuminant driver module, and an illuminant driver management module. The output voltage control module is configured to output a driving voltage. The illuminant driver module is configured to output an illuminant voltage to the illuminant module after receiving the driving voltage. The illuminant driver management module is configured to receive the illuminant voltage and to detect a variation in the illuminant voltage. Then, the illuminant driver management module outputs a control signal to the output voltage control module according to the variation of the illuminant voltage. Finally, the output voltage control module adjusts the driving voltage according to the control signal.
    Type: Grant
    Filed: May 26, 2010
    Date of Patent: September 17, 2013
    Assignee: Delta Electronics, Inc.
    Inventors: Yao-Hsien Huang, Chao-Shun Yang
  • 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
  • Publication number: 20130215397
    Abstract: A lighting device includes: a phosphor wheel; a color-combining prism including dichroic surfaces, the film surfaces of these dichroic surfaces being disposed to cross a center ray of luminous flux of fluorescence emitted from the phosphor wheel and to be orthogonal to a plane that contains the center ray; a blue laser; a red laser; and excitation light sources. When viewed from the direction perpendicular to the plane, the blue laser, red laser, and excitation light sources are arranged on one side of the center ray of the luminous flux of the fluorescence.
    Type: Application
    Filed: November 9, 2010
    Publication date: August 22, 2013
    Inventor: Masateru Matsubara
  • Patent number: 8506088
    Abstract: An airflow-guiding device for a light source includes a cap and a guiding element. The cap has an airflow inlet, a through opening, an airflow outlet, a foundation, an annular side wall, and a cover. The foundation is connected to a reflector of the light source. The through opening is located at the foundation and corresponding to a light outlet of the reflector. The annular side wall where the airflow inlet is located is disposed on the foundation. The cover where the airflow outlet is located is disposed on the annular side wall and opposite to the foundation. The guiding element includes a guiding opening and an annular body. The annular body is rotatably disposed in the cap. The annular body where the guiding opening is located surrounds at least part of the through opening and forms a guiding tunnel together with the annular side wall in the cap.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: August 13, 2013
    Assignee: Young Green Energy Co.
    Inventor: Yi-Kuan Liao
  • Publication number: 20130194553
    Abstract: The invention describes a method of cooling a lamp (1) in a projector (2, 2?) independently of an orientation (Pdesk, Pceiling) of the projector (2, 2?), which method comprises directing a cooling airflow (4) symmetrically at a burner (10) of the lamp (1) during operation of the lamp (1); and controlling the cooling airflow (4) alternately between at least a first cooling level (C-I) and a second cooling level (C-II) such that, during cooling at the first cooling level (C-I), the temperature (Tbase) in a base region of the burner (10) drops below a predefined minimum operating temperature (Tmin) to allow a blackening of an inside wall (100) of the burner (10), and during cooling at the second cooling level (C-II), the temperature (Ttop) in an upper region of the burner (10) increases above a predefined maximum operating temperature (Tmax) and the temperature (Tbase) in the base region of the burner (10) increases above the predefined minimum operating temperature (Tmin) to facilitate a cleaning of the burner
    Type: Application
    Filed: February 18, 2011
    Publication date: August 1, 2013
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS N.V.
    Inventors: John-John Pieter Jan Van Den Bergh, Ludo Valère Maurice Schreel, Stijn Lenni Robbert De Vijlder, Kristin Annemie Dirk Gysels, Jasper Cuyvers
  • Patent number: 8491126
    Abstract: A projector includes an optical module, a lens and a heat conducting member. The heat conducting member is disposed between the optical module and the lens. The heat conducting member is used for conducting heat from the lens to the optical module.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: July 23, 2013
    Assignee: Qisda Corporation
    Inventors: Yen-Feng Ko, Tsung-Hsun Wu
  • Patent number: 8480236
    Abstract: A projector includes: an illumination system which has a light source, and a light control unit opened and closed to shield a part of light emitted from the light source; a light modulation device illuminated by illumination light received from the illumination system; an air supply device which supplies air to the light control unit and the light modulation device; and an air supply control unit which decreases an air supply amount to the light modulation device when increasing an air supply amount to the light control unit in accordance with a relatively closed condition of the light control unit.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: July 9, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Seiji Tadachi
  • Publication number: 20130162958
    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: Application
    Filed: January 30, 2013
    Publication date: June 27, 2013
    Applicant: Nuventix, Inc.
    Inventor: Nuventix, Inc.
  • Patent number: 8465156
    Abstract: An image projection apparatus includes cooling fans 10, 12, and 16 provided inside a chassis 17 and configured to take in cooling air from a cooling inlet port 17a formed in the chassis, an air filter 22 that covers the cooling inlet port, an exhaust port 19a formed in the chassis and configured to exhaust the cooling air from an inside to an outside of the chassis, and a cleaning fan 25 provided inside the chassis and configured to take in cleaning air from a cleaning inlet port 17b formed in the chassis separately from the exhaust port. The image projection apparatus exhausts the cleaning air discharged from the cleaning fan, from the inside to the outside of the chassis via the cooling inlet port and the air filter.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: June 18, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Daisuke Nakashita
  • 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: 8408714
    Abstract: A light source device includes: an arc tube having a light emission portion; a first reflection mirror having a substantially concave surface for reflecting light emitted from the light emission portion; and a container which accommodates the arc tube and the first reflection mirror, wherein the container has a duct unit disposed above the arc tube. The duct unit includes a first opening open to the arc tube and 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 the surface opposite to the surface having the first opening.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: April 2, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Onodera, Takahiro Takizawa
  • 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
  • Publication number: 20130077054
    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: Application
    Filed: September 13, 2012
    Publication date: March 28, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-geun LIM, Jun-seok PARK, Jean HUR, Sung-je WOO
  • 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
  • Publication number: 20130070211
    Abstract: A centrifugal fan introducing air via an inlet port in a direction of a rotation axis and discharging the air via an outlet port in the a direction of a centrifugal force produced by rotation includes: an impeller having a plurality of vanes around the rotation axis; and a housing including the inlet port and supporting the impeller such that the impeller is allowed to freely rotate in the housing. An inclined portion is formed at least at a part of edge portion of the inlet port, the inclined portion widening to the side that the impeller is disposed.
    Type: Application
    Filed: September 4, 2012
    Publication date: March 21, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Daigo YAMANO, Fumihide SASAKI
  • Patent number: 8393738
    Abstract: An illumination module includes a light source, a supporting element, a guiding tube and an airflow generator. The supporting element is fixed relative to the light source. The guiding tube is pivoted to the supporting element and adjacent to the light source. The guiding tube is capable of moving between a first position and a second position relative to the light source. The airflow generator has an airflow outlet and is capable of generating an airflow. The airflow outlet is adjacent to the guiding tube. The airflow flows into the light source through the guiding tube. The invention also provides a projector with the illumination module.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: March 12, 2013
    Assignee: Coretronic Corporation
    Inventors: Wei-Cheng Lo, Kun-Chieh Chan
  • Patent number: 8392034
    Abstract: The invention provides an electronic apparatus including a casing, a thermal sensor, a controlling unit, an air filter and a cooling fan. The air filter is detachably attached to the inlet of the casing. When the air filter is attached to the inlet of the casing, a partial structure of the air filter neighboring the thermal sensor blocks an airflow from flowing through the thermal sensor. In particular, when the air filter is attached to the inlet of the casing, or when the air filter is not attached to the inlet of the casing, the controlling unit always calculates a determined speed by applying the temperature sensed by the thermal sensor in a function of speed versus temperature, and controls the cooling fan operating under the determined speed to cool the electronic apparatus.
    Type: Grant
    Filed: December 15, 2010
    Date of Patent: March 5, 2013
    Assignee: Qisda Corporation
    Inventor: Chi-Hung Hsiao
  • 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: 8388144
    Abstract: The present invention provides a projection image display device capable of both minimizing a decrease in a cooling ability and simplifying maintenance of a filter. The projection image display device according to the present invention includes a filter material for filtering external air taken into a casing, a loop-shaped filter frame onto which the filter material is mounted, a drive mechanism for rotating the filter frame in a loop direction of the loop shape, and a dust removal brush to be brought into contact with the filter material while spinning at a predetermined position. The filter material is mounted onto a part of a loop-shaped surface of the filter frame. The filter material is not mounted but a ventilation part is provided in the other part of the loop-shaped surface of the filter frame.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: March 5, 2013
    Assignee: Mitsubishi Electric Corporation
    Inventors: Satoshi Uozaki, Toshimitsu Iwai
  • 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
  • Publication number: 20130050658
    Abstract: An electronic device includes a housing; and a vent unit provided to the housing, the vent unit having a two-dimensional lattice unit and a column part, the two-dimensional lattice unit including one-dimensional lattice parts intersecting each other, the column part being provided at an intersection of the one-dimensional lattice parts and protruding to at least one of the inside and the outside of the two-dimensional lattice unit.
    Type: Application
    Filed: August 27, 2012
    Publication date: February 28, 2013
    Applicant: RICOH COMPANY, LIMITED
    Inventor: Hiroshi MOROHOSHI
  • Patent number: 8382290
    Abstract: A projector adapted to project an image includes: a detection section adapted to detect a motion of the projector; a determination section adapted to compare a detection result of the detection section with a predetermined criterion to perform determination on whether the projector is in a moving state or in a resting state; an adjustment section adapted to begin adjustment of at least one projection condition of the image in response to a transition of a determination result of the determination section from the moving state to the resting state; an auxiliary operation section adapted to auxiliary support the projection of the image by performing an operation with vibration; and a criterion determination section adapted to change the criterion based on a operation state of the auxiliary operation section.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: February 26, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Tadao Takahashi
  • Patent number: 8360584
    Abstract: A projector includes: an optical system includes a light source, a light modulation element for modulating light emitted from the light source to form an optical image, and a projection lens for projecting the optical image, the optical system is structured such that an illumination optical axis of the light source and a projection optical axis of the projection lens cross each other substantially at right angles in the plan view; and a cooling fan configured to the light modulation element, and has a rotation axis crossing each other substantially at right angles with a discharge direction where a cooling air is discharged, the cooling fan is disposed in the vicinity of the projection lens and on the side where the light source is provided such that the rotation axis extends in the thickness direction of the projector.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: January 29, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Akira Egawa, Kaname Nagatani, Kunihiko Takagi
  • Patent number: 8350711
    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: October 19, 2009
    Date of Patent: January 8, 2013
    Assignee: Dell Products L.P.
    Inventors: Stuart Allen Berke, Dominick Lovicott, Hasnain Shabbir, William Coxe
  • Publication number: 20130003025
    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: Application
    Filed: March 21, 2012
    Publication date: January 3, 2013
    Applicant: CORETRONIC CORPORATION
    Inventors: Chuan-Te Cheng, Tao- Hung Kuo
  • 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
  • Publication number: 20120313980
    Abstract: The present invention relates to an illumination device comprising a number of light sources and a number light collecting means, where the light collecting means collect light generated by the first light sources and convert the light into a source light beam propagating primarily along a primary optical axis. The light source module comprises a cooling module comprising a number of interconnected plane mounting surfaces angled in relation to each other and where the light sources is arranged on said plane mounting surfaces. The cooling module comprises a first side comprising the mounting surfaces and a second side comprising a number of cooling fins defining a number of radial air channels.
    Type: Application
    Filed: December 21, 2010
    Publication date: December 13, 2012
    Applicant: MARTIN PROFESSIONAL A/S
    Inventors: Lars Kjaer, Dennis Jørgensen
  • Patent number: 8328364
    Abstract: A projection display apparatus includes an axial fan and a louver. The axial fan includes blades which are rotated to generate an airflow in an axial direction so that air is exhausted from a housing. The louver includes inclined plate portions which are inclined with respect to the axial direction, the inclined plate portions being arranged in a direction perpendicular to the axial direction at an airflow exit side of the axial fan, the louver being divided into a first area and a second area by a straight line which passes through an axial center of the blades, the inclined plate portions being inclined in different directions between the first area and the second area such that the inclined plate portions are inclined along the direction in which the blades are rotated.
    Type: Grant
    Filed: November 19, 2009
    Date of Patent: December 11, 2012
    Assignees: Sony Corporation, Sony Mobile Communications Japan, Inc.
    Inventors: Hiroko Fujibayashi, Hiroyuki Meguro, Kazuhiro Takai
  • 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: 8317337
    Abstract: A projector configured to modulate a luminous flux emitted from a light source in accordance with image information, forms an image light, and projects the image light, includes: an exterior housing having an intake vent for taking in the ambient air, and an insertion slot communicating with the intake vent; an anti-dust filter being installed in the exterior housing so as to be mountable in and removable from the exterior housing through the insertion slot, prevents dust from intruding into the exterior housing from the intake vent; and a cover configured so as to be switchable between an open condition in which it exposes the insertion slot, and a closed condition in which it covers the insertion slot.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: November 27, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Toshimitsu Watanabe
  • 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: 8313200
    Abstract: A light source apparatus adapted to a projection device having a casing and an optical engine base is provided. The light source apparatus includes a shell, a positioning element, a frame, and a light source. The shell is adapted to be disposed in the casing and lean against the optical engine base. The positioning element is assembled to the shell and has two positioning holes. The frame is disposed in the shell and has two positioning pins, wherein the two positioning pins are inserted into the two positioning holes respectively for positioning the frame with respect to the shell. The light source is fixed to the frame. A projection device is also provided.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: November 20, 2012
    Assignee: Coretronic Corporation
    Inventors: Chung- Hsien Yen, I-Hsien Liu, Chien-Ming Peng
  • 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: 8292980
    Abstract: The present invention includes: a rolled filter stretched between first and second winding shafts and, unused part of the filter being wound around the second winding shaft; a brush provided between the first and the second winding shafts so as to come into contact with a surface of the filter; a feeding mechanism for driving the first and the second winding shafts to take up or rewind the filter; and a feeding control unit for controlling the feeding mechanism. When activating a renewing operation for feeding unused part of the filter from the second winding shaft, the feeding control unit controls the feeding mechanism such that once the filter is taken up by the first winding shaft by an take-up amount La, the filter is rewound by the second winding shaft by a rewind amount Lb, and La and Lb satisfy a relationship La?Lb.
    Type: Grant
    Filed: September 22, 2009
    Date of Patent: October 23, 2012
    Assignee: Panasonic Corporation
    Inventors: Shigekazu Yamagishi, Shingo Oidate, Masato Tanaka, Mitsuru Kotaka
  • 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
  • Patent number: 8277050
    Abstract: A projector includes: an image projection unit which modulates light emitted from a light source and projects the modulated light; a cooling fan which cools the image projection unit; a light source control unit which controls lighting of the light source; a cooling control unit which controls operation of the cooling fan; an input operation unit which receives input operation; and a control unit which allows the light source control unit to decrease the luminance of the light source or allows the cooling control unit to increase the rotational speed of the cooling fan during the period from the time when the input operation unit receives the first ending operation to the time when the input operation unit receives the second ending operation.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: October 2, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Yoshiyuki Furumi
  • Publication number: 20120242964
    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: Application
    Filed: March 21, 2012
    Publication date: September 27, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Tomoaki MIYASHITA
  • Patent number: 8256901
    Abstract: An apparatus and method of cooling an image projecting apparatus. The image projecting apparatus includes a main body frame, at least one heat generating unit, a heat dispersion part, at least one heat transfer member, and a single cooling fan, where the first side of the at least one heat transfer member is connected to the at least one heat generating unit, and a second side of the at least one heat transfer member is connected to the heat dispersion part.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seon-woo Lim, Won-nyun Kim
  • Patent number: 8246171
    Abstract: A cooling device for projector includes a shell, a circuit board, a light machine, a first fins, a fan assembly and a heat dissipation module. The light machine is mounted on the circuit board, and includes a light source having a red LED, a green LED facing the red LED, and a blue LED positioned between both of them. The first fins are mounted on the light source adjacent to the blue LED. The fan assembly includes a fan having a fan shell with an inlet and an outlet, and a second fins connected to the light source to aligned with the red LED. The heat dissipation module includes a third fins mounted on the light source to align to the green LED, a fourth fins mounted on the fan shell to align to the outlet of the fan, and a heat pipe interconnecting the third and fourth fins.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: August 21, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Chien-Fu Chen, Tsung-Je Chiu, Ching-Te Chu
  • Patent number: 8240856
    Abstract: A compact projector includes a main control board, an optical engine positioned on the main control board, a heat dissipation assembly, a light source control board, and a digital-micromirror-device control board. The optical engine includes a light-shading member and a projection lens module. The light-shading member includes a first plate and a second plate. The first plate and the projection lens module are approximately perpendicular to the second plate to form a U-shape. The heat dissipation assembly is positioned adjacent to the first plate. The light source control board is positioned on one side of the main control board adjacent to the second plate. The digital-micromirror-device control board is positioned on one side of the main control board perpendicular to the light source control board.
    Type: Grant
    Filed: March 23, 2009
    Date of Patent: August 14, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventor: Shu-Chen Yang