Blower Patents (Class 353/57)
  • 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: 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: 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: 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
  • Patent number: 8237652
    Abstract: A liquid crystal display (LCD) apparatus includes: an LCD panel which displays an image; a backlight unit which is formed of a plurality of light emitting diodes (LEDs) and emits light to the LCD panel; a cooling fan which radiates heat generated from the backlight unit; a fan driver which drives the cooling fan; and a controller which selectively controls either the fan driver or the backlight unit to set a rotation speed of the cooling fan to be corresponded with a luminance value of the backlight unit.
    Type: Grant
    Filed: July 30, 2007
    Date of Patent: August 7, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-kook Kim
  • Patent number: 8231227
    Abstract: There are provided a light emitting device which can maintain a light emitting efficiency of a fluorescent material in an optimum condition, a light source unit made up of the light emitting device, and a projector which includes the light source unit. The light source unit is made up of the three light emitting devices which emit lights of different colors. The light emitting devices are each made up of a light source, a rotary member on which a fluorescent material layer is disposed which receives light to emit light of a predetermined color, a drive source for driving the rotary member, a rotational speed control device for variably controlling the rotary member so as to maintain the temperature of the rotary member to a predetermined value based on temperature information, and a temperature measuring device for measuring a temperature of the rotary member.
    Type: Grant
    Filed: March 17, 2010
    Date of Patent: July 31, 2012
    Assignee: Casio Computer Co., Ltd.
    Inventor: Hideyuki Kurosaki
  • Patent number: 8231229
    Abstract: A mounting structure for a temperature sensor, which detects the temperature of a wall surface. The mounting structure includes a groove formed in the wall surface and having an inlet from which the temperature sensor is inserted. The temperature sensor includes a main body, which has a temperature detection surface that detects the temperature of the wall surface, and a lead wire connected to the main body. A support supports the main body. A wire bender bends the lead wire of the temperature sensor extending out of the inlet to press the temperature detection surface of the temperature sensor against the wall surface with an elastic force of the lead wire that is produced when the lead wire is bent. A stopper restricts movement of the main body of the temperature sensor.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: July 31, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventors: Toshimasa Kanbara, Taichi Yoshimura
  • Patent number: 8231252
    Abstract: A projector includes a light source, a pump which supplies a compressed gas to cool the light source, and an ejector member having a hole, in which, a tube connects the pump to the ejector member, the compressed gas is discharged from the hole, and a diameter of the hole is in a range from 0.2 mm to 0.4 mm.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: July 31, 2012
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yoshifumi Nishimura, Hiroaki Takamatsu
  • Patent number: 8226244
    Abstract: LED modules (1R, 1G, 1B) for respectively emitting red, green and blue colors of light, illumination optical systems (2R, 2G, 2B) for guiding light from the LED modules, and a liquid crystal panel (7) for modulating the light from the LED modules guided by the illumination optical systems on the basis of an image signal are placed. The LED modules are provided with respective cooling units connected to the backside thereof through spreaders (11R, 11G, 11B) as thermal conductive members. Only the cooling device for the red LED module (1R) is formed by using a red Peltier device (12) as a thermoelectric element capable of controlling heating and absorbing heat. Efficient temperature control by appropriately using a Peltier device for cooling the plurality of solid light sources that emit colors of light different from each other becomes possible.
    Type: Grant
    Filed: July 9, 2008
    Date of Patent: July 24, 2012
    Assignee: Panasonic Corporation
    Inventors: Shigekazu Yamagishi, Kazunori Tanabe, Shuu Nanba
  • Publication number: 20120182530
    Abstract: A heat dissipation assembly for a projection apparatus is provided. The projection apparatus includes a light source, optical elements and a heat dissipation assembly. The heat dissipation assembly includes a case, a heat dissipation element, a fan and a temperature controlling unit. The optical elements transmit a light beam generated by the light source, and thereby generate heat. The heat dissipation assembly is adapted for heat dissipation correspondingly. In the heat dissipation assembly, the case protects the optical elements from being polluted by the dust during heat dissipation. The temperature controlling unit senses the surrounding temperature to control the fan for cooling the heat dissipation element, and the durability of the optical elements are thereby enhanced.
    Type: Application
    Filed: December 7, 2011
    Publication date: July 19, 2012
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chia-Jui LIN, Hsiu-Ming CHANG, Mao-Shan HSU
  • Patent number: 8205993
    Abstract: A projection-type image displaying apparatus takes in outside air through an air inlet formed in a housing unit to cool at least one of an optical modulator and an optical element that are accommodated in the housing unit, the optical modulator forming an optical image and the optical element being disposed between the optical modulator and a light source. The projection-type image displaying apparatus includes a cooling fan, a first dustproof filter disposed at the air inlet of the housing unit, a second dustproof filter disposed in a flow path that guides the outside air toward the optical modulator or the optical element after the outside air passes through the first dustproof filter and the cooling fan, and a holder for holding the optical modulator or the optical element, the holder having an outside-air introducing portion, wherein the second dustproof filter is attachable to the outside-air introducing portion.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: June 26, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Toru Miura
  • Publication number: 20120154760
    Abstract: A humidifier has a housing that holds humidifying equipment and an image projector. The image projector is set on the top portion of the housing and includes a light source, a removable projector cover and a projector lens. Light from the light source shines through the projector lens and projector cover to project an image onto a surface of the room, such a ceiling. The humidifying equipment may be conventional in nature, including for example a fan, a water tank, a water reservoir, a filter, a filter tray or combinations thereof. The image projector may also include a rotating mechanism that causes the projected image or images to rotate. The light source may also provide different colors of light. One or more optical characteristics of the projected image, such as image size, shape, color and brightness can be changed by changing the projector lens, projector cover or both.
    Type: Application
    Filed: October 7, 2011
    Publication date: June 21, 2012
    Applicant: Kaz USA, Inc.
    Inventors: Francis C. Nutter, Lara Peterson
  • Publication number: 20120140187
    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: Application
    Filed: August 25, 2011
    Publication date: June 7, 2012
    Inventors: Tung-Yi KO, Tzu-Tse HUANG
  • Patent number: 8186836
    Abstract: A mobile projector apparatus includes a light source, a modulation unit modulating light of the light source using a picture signal, a projection lens magnifying and projecting the modulated light of the light source, a battery supplying electric power to the light source, an acceleration measuring unit measuring an acceleration applied to the mobile projector apparatus, a usage state detecting unit detecting whether or not the mobile projector apparatus is in an unused state, and an extinguishing unit extinguishing the light source based on outputs of the acceleration measuring unit and the usage state detecting unit.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: May 29, 2012
    Assignee: SANYO Electric Co., Ltd.
    Inventor: Hisashi Nakamura
  • Patent number: 8172406
    Abstract: A powder dust capture device includes a main body housing having an air intake in which a powder dust capture unit is provided, and a blowing unit for drawing air in from the air intake via the powder dust capture unit, passing the air through a predetermined area, and expelling the air out from an exhaust. The powder dust capture unit includes a filter unit with an electrostatic filter wound around a roller shaft, a filter take-up shaft, a filter feeding mechanism and a filter feed control unit. The filter unit is attachable/removable with respect to the main body housing. The filter feed control unit has a filter feed amount detection unit, and controls a filter feeding operation performed by the filter feeding mechanism, based on detection output from the filter feed amount detection unit.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: May 8, 2012
    Assignee: Panasonic Corporation
    Inventor: Shigekazu Yamagishi
  • Patent number: 8172405
    Abstract: A lamp includes a lampwick, a reflector, and a shade. The reflector has an opening and a bottom portion opposite to the opening. The lampwick is disposed at the bottom portion and passes through the bottom portion and at least one part of the lampwick is disposed in the reflector. The shade disposed outside the reflector covers a part of the reflector. The shade connected to the bottom portion has an inlet and an outlet. The inlet and the outlet are disposed at two opposite sides of the reflector respectively. An air flow flows into the space between the reflector and the shade through the inlet. At least one part of the air flow flows through the outlet along a flowing direction. An included angle defined between the flowing direction and a transmitting direction of an illumination light beam formed by the reflector is an acute angle.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: May 8, 2012
    Assignees: Young Green Energy Co., Coretronic Corporation
    Inventors: Wei-Cheng Lo, Jung-Chi Chen, Jih-Ching Chang, Kai-Lun Hou
  • Publication number: 20120081677
    Abstract: A projection display apparatus includes a housing member containing a light source, an imager that modulates light emitted from the light source, and a projection unit that projects the light emitted from the imager on a projection surface. The projection display apparatus includes: a movement mechanism that moves an optical unit configured by the light source, the imager, and the projection unit, in a direction perpendicular to the projection surface while maintaining a positional relationship among the light source, the imager, and the projection unit.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 5, 2012
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Yuki Tanohata, Makoto Maeda, Nobuyuki Kondo, Shinya Matsumoto
  • Publication number: 20120075595
    Abstract: A video projector including a light source used to display an image, an optical component that differs from the light source, a power supply unit that supplies power, and a centrifugal fan including a rotation shaft and a blade that rotates about the rotation shaft. The centrifugal fan is a double intake fan that draws in gas from first and second axial directions, which are parallel to the rotation shaft, by rotating the blade and sends the gas outward in a radial direction from the rotation shaft. The centrifugal fan sends gas that has cooled the optical component and the power supply unit to the light source.
    Type: Application
    Filed: September 23, 2011
    Publication date: March 29, 2012
    Applicants: Sanyo Technology Center (Shenzhen) Co., Ltd., Sanyo Electric Co., Ltd.
    Inventors: Yusuke YAMAMOTO, Toshihiro Saruwatari, Chao Wang
  • Patent number: 8142027
    Abstract: The disclosure refers to an electronic device and methods for cooling an object within the electronic device. In one example, an electronic device includes a cooling fan for cooling an object. An air-quantity measuring device measures a quantity of cooling air sent by the cooling fan. An ambient-temperature measuring device measures an ambient temperature around the electronic device. A control unit is configured to control the electronic device. The control unit includes an object-temperature calculating section configured to calculate a temperature of the object from the measured air quantity and the measured ambient temperature. An operation control section is configured to control the cooling fan according to the calculated temperature of the object.
    Type: Grant
    Filed: June 25, 2008
    Date of Patent: March 27, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Yohei Sakai
  • Patent number: 8132923
    Abstract: A cooling device which prevents ambient persons from being exposed to an unpleasant feeling as much as possible by properly controlling an exhausting direction of the air which is used for cooling and exhausted from a chassis and an image projection apparatus having the cooling device are obtained. The cooing device cools first and second members to be cooled provided in the chassis, has first and second exhaust fans for guiding winds which have cooled the respective first and second members to an outside of the chassis, and is characterized in that the first and second exhaust fans are arranged so as to face the same surface of the chassis and the winds exhausted from the first and second exhaust fans are mixed.
    Type: Grant
    Filed: May 9, 2008
    Date of Patent: March 13, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Ryuji Suzuki
  • Patent number: 8132921
    Abstract: According to one embodiment, a projection display apparatus comprises an optical system configured to modulate light from a light source in accordance with an input image signal and to project modulated light onto a screen, a cooling fan configured to cool the optical system, an error detector configured to detect a driving error of the cooling fan, a target rotation speed setting unit configured to set a target rotation speed of the cooling fan, and a target rotation speed controller configured to increase the target rotation speed of the cooling fan when the error detector detects a drive error of the cooling fan.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: March 13, 2012
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kazuyuki Takeda
  • Patent number: 8132922
    Abstract: A filter unit includes: a feeding shaft 24 around which an unused part of a roll filter 18 is wound; a take-up shaft 25 for taking up the filter from the feeding shaft; a motor 40 for rotating and driving the take-up shaft so as to take up the filter; a filter unit housing 26 for housing the feeding shaft and the take-up shaft and including, between the both shafts, an opening for exposing the filter; rotation detection patterns 42 that rotate in connection with transfer of the filter caused by taking up the filter and are placed at predetermined intervals in a circumferential direction in which the rotation detection patterns rotate; a pattern sensor 43 for detecting rotation of the rotation detection patterns and outputting a detection signal whose amplitude fluctuates in accordance with the predetermined intervals; and a used filter amount detecting unit for detecting a used amount of the filter based on a correspondence between a period at which the amplitude of the detection signal fluctuates and an amou
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: March 13, 2012
    Assignee: Panasonic Corporation
    Inventor: Masaya Yamamoto
  • Patent number: 8128235
    Abstract: An illuminating device adapted to a projecting apparatus including a lamp module, a power module, and a fan is provided. The lamp module is separately disposed in the projecting apparatus. The lamp module has a lamp, an igniting module and a plate. The igniting module is capable of generating a high voltage signal to drive the lamp. The plate is disposed between the lamp and the igniting module for shielding radiating heat generated by the lamp. The power module is capable of generating a low voltage signal transmitted to the igniting module through a low voltage power line. The igniting module transforms the low voltage signal into the high voltage signal to drive the lamp. The fan is disposed at a first side of the lamp for cooling the lamp.
    Type: Grant
    Filed: June 5, 2009
    Date of Patent: March 6, 2012
    Assignee: Coretronic Corporation
    Inventors: Shen-Huei Wang, Wei-Cheng Lo, Shang-Hsuang Wu
  • Patent number: 8128240
    Abstract: An optical unit includes a frame; an optical member having a rectangular plate-shape; and a pair of mount portions formed in the frame, each holding a side of the optical member. Each of the mount portions includes an insertion slot into which an end of the optical member in the width direction is inserted. The insertion slot is formed between first and second walls of the frame. The first wall includes a thickness direction positioning surface that is in contact with one of the surfaces of the optical member in a thickness direction. The second wall includes an inclined surface. The optical member is fixed to the frame using an adhesive in a state in which the one of the surfaces of the optical member is pressed against the thickness direction positioning surface and an end of the optical member in the height direction is pressed against the inclined surface.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: March 6, 2012
    Assignee: Sony Corporation
    Inventors: Takashi Kubota, Katumi Muramatu
  • Patent number: 8128236
    Abstract: Disclosed is an image projecting apparatus having a cooling device, which cools heat generated from a plurality of light sources respectively emitting light of different colors and heat generated from a display device simultaneously, while effectively dispersing the heat. The image projecting apparatus includes a projecting system which projects light; a display device disposed in series with the projecting system; an optical system disposed in parallel with the projecting system, and including a plurality of light sources which transmit the light to the display device and generate heat when the light is transmitted to the display device; a heat dissipation device disposed at an outer edge of the optical system which dissipates the heat generated from the plurality of light sources; and a cooling fan disposed opposite to the display device, which inhales air and discharges the air to the heat dissipation device.
    Type: Grant
    Filed: February 6, 2009
    Date of Patent: March 6, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin Sub Kim, Sang Jun Choi, Byung Jo Kang
  • Publication number: 20120033188
    Abstract: A projector includes an optical element and a cooling device configured to supply cooling air along the surface of the optical element. The cooling device supplies the cooling air in two supply directions crossing each other and extending from one edge to the other edge of two opposed edges of the optical element.
    Type: Application
    Filed: July 27, 2011
    Publication date: February 9, 2012
    Applicant: Seiko Epson Corporation
    Inventors: Norikazu Kadotani, Yohei Sakai
  • Publication number: 20120033187
    Abstract: A video projector including light source lamps and a cooling fan, which cools the light source lamps. A memory unit stores a reference time set for each of the light source lamps. The reference time indicates the time required for the corresponding light source lamp to be cooled, after being deactivated, to the reference temperature or less. A notification unit generates a notification for each of the light source lamps indicating that the light source lamp is replaceable. An elapsed time from when each of the light source lamps is switched from an activated state to a deactivated state is compared with a corresponding reference time. When the elapsed time exceeds the corresponding reference time, the notification unit generates the notification related to the corresponding light source lamp.
    Type: Application
    Filed: July 29, 2011
    Publication date: February 9, 2012
    Applicant: SANYO Electric Co., Ltd.
    Inventors: Kazunori KOTANI, Hirofumi Kazumori
  • Publication number: 20120026470
    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: Application
    Filed: March 26, 2009
    Publication date: February 2, 2012
    Inventor: Takeshi Katou
  • Publication number: 20120013854
    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: Application
    Filed: March 30, 2009
    Publication date: January 19, 2012
    Inventors: Yoshifumi Nishimura, Takayuki Okada
  • Publication number: 20120008099
    Abstract: A device and system for projecting images onto a screen, wherein the device and devices which are included in the system have associated therewith components comprising a light source, a cooling means for the light source, at least one of a reflector adapted to focus light from the light source and a focusing lens that receives light from the light source, a dynamic colour filter that receives light from at least one of the light source/reflector and the focusing lens, a light-shaping lens or rod that transmits light which has passed through the filter, an image-forming element that receives light from the light-shaping lens or rod, and a lens for projecting onto the screen images received from the image-forming element. At least the light source and the cooling means are placed in a first component housing separate from the other components that are located in at least one further component housing, and the connection between the component housings is effected by at least one liquid light guide.
    Type: Application
    Filed: November 18, 2009
    Publication date: January 12, 2012
    Inventor: Børre Mortensen
  • Patent number: 8092027
    Abstract: A portable electronic device with micro-projecting module includes a shell body, a micro-projecting module, a heat-conducting plate and a supporting stand. The shell body has a front lateral plate and a bottom lateral plate adjoining the front lateral plate. The front lateral plate has a front through hole, while the bottom lateral plate has a bottom through hole. The micro-projecting module is arranged in the shell body and has a lens exposing to an outside of the shell body from the front through hole. The heat-conducting plate is arranged in the shell body and is positioned between the micro-projecting module and the bottom through hole. In the meantime, the heat-conducting plate has a heat-absorbing face contacting the micro-projecting module and a heat-dissipating face abutted against the bottom through hole.
    Type: Grant
    Filed: April 6, 2009
    Date of Patent: January 10, 2012
    Inventor: Yi-Fang Chuang
  • Publication number: 20120002177
    Abstract: A projection device and a light source temperature regulating method thereof are provided. The projection device comprises a light source, a cooling unit and a control unit. The light source is operated at a working temperature. The cooling unit provides a cooling capacity to the light source. The control unit actively adjusts the cooling capacity of the cooling unit, and thus allows the working temperature of the light source to vary within the anticipated range.
    Type: Application
    Filed: May 26, 2011
    Publication date: January 5, 2012
    Inventors: Chia-Jui Lin, Hsiu-Ming Chang
  • Patent number: 8087787
    Abstract: Methods and apparatus are disclosed for maximizing performance of an electronic device, such as a display device. Aspects of the exemplary embodiments include operating the electronic device by adjusting power to the device to maintain a predetermined junction temperature of the device independent of the ambient temperature at which the device is operating.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: January 3, 2012
    Assignee: Spatial Photonics, Inc.
    Inventor: David L. Medin
  • Patent number: 8083357
    Abstract: A projecting apparatus cooling structure is provided in which a discharge lamp can be always kept at an appropriate temperature whether the projecting apparatus is horizontally installed on a flat surface for forward projection or for downward projection or suspended from the ceiling for forward projection or for upward projection, so that the reliability and safety of the discharge lamp is improved and so that the life of the discharge lamp can be extended. The projecting apparatus projects an image for display using a discharge lamp as a light source.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: December 27, 2011
    Assignee: Hitachi, Ltd.
    Inventors: Masayuki Fukui, Hideharu Saito