Particular Air Ducts Or Deflector Patents (Class 353/61)
  • Patent number: 10324365
    Abstract: [Object] To provide a projector-type display apparatus with ease of maintenance. [Solving Means] According to the present technology, a projector-type display apparatus includes an optical-system-for-projecting, a housing, a fan, an air-filter, and a filter-cover. The housing includes an air-inlet-port, and houses the optical-system-for-projecting. The fan is housed in the housing, air from the air-inlet-port flowing into the fan. The air-filter is attachable to and detachable from the housing, and covers the air-inlet-port. The filter-cover is attachable to and detachable from the air-filter.
    Type: Grant
    Filed: November 1, 2016
    Date of Patent: June 18, 2019
    Assignee: SONY CORPORATION
    Inventors: Kazuhiro Kita, Taku Inoue
  • Patent number: 10165240
    Abstract: Disclosed are an apparatus and method for controlling a laser projector to operate. The method includes: obtaining a plurality of operating parameters of the laser projector in operation; comparing each of obtained operating parameters with a preset parameter, and judging whether the laser projector fails, wherein the preset parameters are parameters of the laser projector which is operating normally; and determining failure information of the laser projector according to a result of a comparison if it is judged that the failure occurs.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: December 25, 2018
    Assignees: Hisense Co., Ltd., Hisense USA Corporation, Hisense International Co., Ltd.
    Inventor: Song Li
  • Patent number: 10133161
    Abstract: A projection display device includes a first substrate on which a red light source is mounted, a second substrate on which a green light source is mounted, a third substrate on which a blue light source is mounted, a housing to which the first through third substrates are attached, an optical member accommodated inside the housing, and a light modulating element; light emitted inside the housing from the red light source, the green light source, and the blue light source being distributed by the optical member, the distributed light being converted to a prescribed display image by the light modulating element, and the light being projected outside the housing. The first through third substrates are made of metal or of filler-containing plastic compounded with a filler having high thermal conductivity, and the housing is made of metal or a filler-containing plastic compounded a filler having high thermal conductivity.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: November 20, 2018
    Assignee: Nippon Seiki Co., Ltd.
    Inventors: Akinori Koiida, Yuichi Takahashi, Takuro Hirokawa, Takayuki Hatano
  • Patent number: 9998718
    Abstract: An image display apparatus includes a laser light source, a light modulator, a first sensor, a second sensor, a third sensor, and circuitry. The light modulator generates an image based on light from the laser light source. The first sensor measures a first temperature in a vicinity of an air inlet of a housing of the image display apparatus. The second sensor measures a second temperature associated with the laser light source. The third sensor measures a third temperature associated with the light modulator. The circuitry is configured to control output of the laser light source based on at least one of the first, second, or third temperatures.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: June 12, 2018
    Assignee: SONY CORPORATION
    Inventors: Kazuya Terasaki, Daisuke Ogawa, Hiroyuki Meguro
  • Patent number: 9977315
    Abstract: A projector includes a projector main body disposed in an attic above a ceiling plate and configured to project image light on a screen located in a room interior below the ceiling plate, a cover member set on the ceiling plate and configured to cover the projector main body, and a projection window provided in the cover member and configured to transmit the image light projected from the projector main body to the room interior side. The projection window is disposed further on the attic side than the ceiling plate to tilt with respect to the ceiling plate.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: May 22, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Hirofumi Kasuga, Takeshi Ishikawa, Tadashi Kinebuchi
  • Patent number: 9971234
    Abstract: A cooling device for an emitting module of a projector includes a base, a guiding portion installed on the base, and a latch portion installed on the base. The guiding portion includes a positioning plate secured on one side of the base and a guiding plate secured on the other side of the base. The positioning plate and the guiding plate are foldable relative to the base to be connected with each other and so define an inlet channel. Air flow can pass through the inlet channel to cool the emitting module. The latch portion is configured to form an outlet in different directions to adjust a direction and strength of the air flow.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: May 15, 2018
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Chin-Wen Yeh
  • Patent number: 9952486
    Abstract: There is provided a image projection apparatus including an image generation unit for generating an image by using light emitted from a light source, comprising: a movable unit configured to hold the image generation unit and to be able to change a position of the image generation unit; and a drive unit configured to drive the movable unit to move, wherein the movable unit is disposed to move horizontally.
    Type: Grant
    Filed: March 1, 2016
    Date of Patent: April 24, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihisa Mikawa, Tetsuya Fujioka, Hideo Kanai, Yasunari Mikutsu, Satoshi Tsuchiya, Takahiro Hiramatsu, Yukimi Nishi, Jun Mashimo, Yoshito Saito
  • Patent number: 9904154
    Abstract: A pico projector includes a housing, a lens, a light engine, a control module and a central processing module. The housing includes a main body and a cover. The lens is disposed in the housing. The light engine is disposed in the housing and configured to produce light including image signals and project the light through the lens. The control module is configured to provide a control signal. The central processing module is disposed in the housing and configured to rotate or move the cover with respect to the main body according to the control signal so as to create an opening for enhancing heat dissipation of the interior of the housing.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: February 27, 2018
    Assignees: SINTAI OPTICAL (SHENZHEN) CO., LTD., ASIA OPTICAL INTERNATIONAL LTD.
    Inventors: Chiao-Sen Hsu, Sen-Yung Liu
  • Patent number: 9778552
    Abstract: A light source device includes heat releasing fins for cooling a blue light emitting diode (LED), a red LED, and a green LED, respectively, which are located next to each other in a direction in which a cooling fan blows air. A space formed between an upper surface of an optical unit and the heat releasing fins enable cooling air of the cooling fan to pass through the space.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 3, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takuya Yamaguchi
  • Patent number: 9664991
    Abstract: A projector includes a projector body having a light-permissive aperture, a plurality of lens modules, a lens disassembly sensing module, a light-emitting module and a control module. The lens modules are individually provided for an assembly to the light-permissive aperture. The lens disassembly sensing module is disposed in the projector body and corresponding to the light-permissive aperture. The light-emitting module is disposed in the projector body and configured to emit lights toward the light-permissive aperture. The control module is signally connected to the lens disassembly sensing module and the light-emitting module. The control module is configured to sense, through the lens disassembly sensing module, whether any one of lens modules is being disassembled from the light-permissive aperture and modulate a lighting intensity of the light-emitting module when a lens module being disassembled from the light-permissive aperture is sensed.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: May 30, 2017
    Assignee: Qisda Corporation
    Inventors: Wei-Chun Chang, Ying-Fang Lin
  • Patent number: 9541821
    Abstract: A light source housing to which a light source lamp having a light emission tube and a reflector is attached includes a pair of flow paths bifurcating onto upper and lower sides of the light emission tube from an air intake port for introducing a cooling air; a flow path open and close unit that slides in a direction of the gravitational force so as to open the flow path on the upper side of the light emission tube and close the flow path on the lower side of the light emission tube; and an air outtake port that outtakes the cooling air introduced into the reflector from the flow path on the upper side of the light emission tube to an outside of the reflector.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: January 10, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Naoyuki Ishikawa, Tetsuya Fujioka, Hideo Kanai, Akihisa Mikawa, Masamichi Yamada, Yasunari Mikutsu, Satoshi Tsuchiya, Yukimi Nishi
  • Patent number: 9494848
    Abstract: A projector includes: an external housing that includes a projection opening and an exhaust port arranged on the same side as the projection opening; an axial-flow fan that causes air to flow therein with the rotation of blades and delivers the air flowing therein; and a plurality of slats that are arranged at the exhaust port and guide the air delivered from the axial-flow fan to an outside. The plurality of slats include an elongated slat that is disposed in, among four exhaust areas arranged side by side in the exhaust port, one of the two exhaust areas on the side close to the projection opening and whose length in a direction in which the air is guided corresponding to a rotational direction of the blade is longer than that of the slats disposed in the other areas.
    Type: Grant
    Filed: January 20, 2014
    Date of Patent: November 15, 2016
    Assignee: Seiko Epson Corporation
    Inventors: Toshio Matsumiya, Nobuyuki Otsuki
  • Patent number: 9207523
    Abstract: A projector includes a case, an optical engine, a heat sink, a circuit board, and a fan. The case includes two sidewalls, and each sidewall defines an air hole. The optical engine is received in the case. The heat sink is positioned on the optical engine. The circuit board is positioned between the heat sink and one of the sidewalls. The fan is received in the case. The air holes of the two sidewalls and the fan form a dissipating passage. The heat sink and the circuit board are positioned in the dissipating passage.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: December 8, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ming-Chih Sun, Kai Huang
  • Patent number: 9152025
    Abstract: An image projector in a case, having a light engine, a circuit board, a heat sink assembly, and a fan assembly, has one or more heat sinks and heat pipes shaped to gather heat from all heat-generating components within the projector and a single air passage to receive the heated air combined from all components, allowing the employment of a single fan module in sucking cool air from the exterior and exhausting heated air through the single air passage.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: October 6, 2015
    Assignees: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD., HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Chien-Fu Chen, Zhi-Hao Wu
  • Patent number: 9063400
    Abstract: A light source device includes a reflector that reflects light received from an arc tube toward an illumination receiving area, and a housing that houses the reflector to form a space through which cooling air for cooling the arc tube flows. The housing has three delivery ports disposed side by side as ports from each of which the cooling air is delivered into the space. A first delivery port included in the three delivery ports is located such that the center of the first delivery port is disposed substantially at a position aligned with the optical axis of the arc tube. Second and third delivery ports included in the three delivery ports are disposed in the vicinity of one and the other sides of the first delivery port, respectively, with respect to the optical axis.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: June 23, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Katsunori Tanaka
  • Patent number: 9039192
    Abstract: A projection display device projects light modulated based on a video signal. The projection display device includes a light source, a first fan for cooling the light source, and a second fan different from the first fan. The number of revolutions of the first fan is increased or decreased with the increase or decrease of the output of the light source. The number of revolutions of the second fan is decreased when the number of revolutions of the first fan is increased, and increased when the number of revolutions of the first fan is decreased.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: May 26, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Shunsuke Okazawa, Takayuki Okada
  • Patent number: 9039191
    Abstract: An image projection apparatus includes a light source, light from which is used to form an image to be projected, a first flow path, a control unit configured to control a light emission from the light source, an electrical power stabilizing unit configured to stabilize an electrical power to be supplied to the light source, and an electrical power source unit configured to supply the electrical power to at least one of the control unit and the electrical power stabilizing unit. One or both of the electrical power source unit and the electrical power stabilizing unit is/are divided into a plurality of boards. The light source is arranged on a normal line of a surface of any of the plurality of boards. The plurality of boards configure surfaces of the first flow path except a surface nearest to the light source.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: May 26, 2015
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Masamichi Yamada, Tetsuya Fujioka, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9033515
    Abstract: A heat dissipation device of a light engine for a projector has a housing, a fan module, a light engine and a heat sink. The light engine is positioned in the housing and connected to the heat sink. The heat sink is positioned out of the housing. The housing has a fan-enclosed flow channel attached on an outer surface of the housing. The fan module is guided by the fan-enclosed flow channel to the heat sink to enhance heat dissipation efficiency of the light engine for the projector.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 19, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ming-Chih Sun, Kai Huang
  • Patent number: 9033514
    Abstract: An image projection apparatus includes a light source; an intake port to take in low-temperature air into the image projection apparatus; an exhaust port to exhaust air from the image projection apparatus; a ventilation unit to generate an air flow from the intake port to the exhaust port; a first flow path for hot-air exhaust having increased its temperature by taking heat from the light source; a second flow path for a part of the low-temperature air, taken from the intake port; and a mixing unit to mix the hot-air exhaust flowing from the first flow path and the low-temperature air flowing from the second flow path. The air mixed and exhausted from the mixing unit converges with another part of the low-temperature air, flowing from a third flow path set outside the mixing unit, at a space between the mixing unit and the exhaust port.
    Type: Grant
    Filed: February 26, 2013
    Date of Patent: May 19, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Yasutada Tsukioka, Tetsuya Fujioka, Masamichi Yamada, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9028073
    Abstract: A projection apparatus includes an optical engine base, a light source, a light valve, a lens module, and a fan. The light source is disposed at the optical engine base for emitting an illumination beam. The light valve is disposed at the optical engine base for converting the illumination beam into an image beam. The lens module is disposed at the optical engine base and includes a lens barrel and a lens assembly disposed in the lens barrel for converting the image beam into a projection beam. The fan is disposed at the optical engine base, and adjacent to the lens module. The fan is used for providing an air flow to cool the lens module.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: May 12, 2015
    Assignee: Coretronic Corporation
    Inventors: Chuan-Te Cheng, Tao-Hung Kuo
  • Patent number: 9022574
    Abstract: Provided is a projection type display device that has dust-proof and coolable optical components. According to an aspect of the present invention, the display device includes a case, a dust-proof structure that has a plurality of walls surrounding a plurality of optical components to prevent dust, and which is located in the case, and suction ports (7b and 7b?) formed in the case and configured to suck cooling air along one wall of the dust-proof structure to cool the optical components. The suction ports are separated into first suction port (7b) and second suction port (7b?) with a position of one wall set as a reference. First suction port (7b) is located to blow the cooling air to the dust-proof structure, while second suction port (7b?) is located to prevent direct blowing of the cooling air to the dust-proof structure. An area of first suction port (7b) is smaller than that of second suction port (7b?).
    Type: Grant
    Filed: September 18, 2009
    Date of Patent: May 5, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yoshifumi Nishimura, Takayuki Okada
  • Patent number: 9022573
    Abstract: An image display device includes a light source; a power supply section that supplies power to light source; a cooling fan that cools the light source; an input section; a drive section that supplies a voltage to cooling fan; a control section that controls drive section and power supply section. The control section sets a first power value for the output of the power supply section and also a first voltage value for the output of the drive section. The control section measures a time at which the light source has been lighted. If the measured value exceeds a threshold, the control section gradually increases the output of the power supply section up to a second power value that is greater than the first voltage value over a predetermined time.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: May 5, 2015
    Assignee: NEC Display Solutions, Ltd.
    Inventors: Yukinori Shioya, Jiro Takami
  • Patent number: 9016870
    Abstract: The projector according to an exemplary embodiment includes an optical system which forms, expands, and projects the image, and includes at least one light source; a light source dissipation unit for dissipating heat generated by the light source; a plurality of circuit boards for operating the projector; an intake unit having an intake opening where external air is received; an exhaust unit having an exhaust opening where the received air is expelled; and a flow path dividing unit which divides a cooling flow path formed between the intake opening and the exhaust opening into an upper cooling flow path and a lower cooling flow path, wherein the light source dissipation unit is placed on the upper cooling flow path and at least one of the plurality of circuit boards is placed on the lower cooling flow path.
    Type: Grant
    Filed: September 13, 2012
    Date of Patent: April 28, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jae-geun Lim, Jun-seok Park, Jean Hur, Sung-je Woo
  • Patent number: 9016868
    Abstract: An image projection apparatus for projecting an image on a projection plane includes a light source; a light source housing to encase the light source; a ventilation unit to send air to the light source; and a flow path set between the light source housing and a side face of the image projection apparatus. A part of the air sent to the light source, by using the ventilation unit, is flowed into the flow path.
    Type: Grant
    Filed: February 25, 2013
    Date of Patent: April 28, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideo Kanai, Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa
  • Patent number: 9016871
    Abstract: A heat dissipation structure of a projection device includes at least one fan, at least one light emitting unit, at least one air guide, and a sensing device. The fan with an outlet is used for providing a cooling flow. The light emitting unit is used for providing a light beam. The air guide is dismountable disposed in front of the outlet. The air guide is used for guiding the cooling flow to a hot spot of the light emitting unit. The sensing device is used for sensing a projection direction of the projection device.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: April 28, 2015
    Assignee: Delta Electronics, Inc.
    Inventors: Chia-Jui Lin, Hui-Chih Lin
  • Patent number: 9010939
    Abstract: According to an embodiment, an image projection apparatus includes a light source unit, an image forming unit that forms an image using light from the light source unit, and a heat releasing unit that is provided to the image forming unit and releases heat from the image forming unit, and projecting the image formed by the image forming unit. The image projection apparatus includes a facing member that faces an installation surface on which a main body of the apparatus is installed; and a foot that allows the facing member to support the image forming unit. The heat releasing unit is provided between the facing member and the image forming unit.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: April 21, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tetsuya Fujioka, Yasutada Tsukioka, Masamichi Yamada, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9010940
    Abstract: According to an embodiment, an image projection apparatus includes a light source unit, an image forming unit that forms an image using light from the light source unit, and a heat releasing unit that is provided to the image forming unit and releases heat from the image forming unit, and projecting the image formed by the image forming unit. The image projection apparatus includes a facing member that faces an installation surface on which a main body of the apparatus is installed; and a foot that allows the facing member to support the image forming unit. The heat releasing unit is provided between the facing member and the image forming unit.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: April 21, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tetsuya Fujioka, Yasutada Tsukioka, Masamichi Yamada, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 9010941
    Abstract: A projector includes a light source unit, a light modulator that modulates light exited from the light source unit, a polarizer or a wave plate provided on a light incident side of the light modulator, a cooling unit that supplies cooling air to the light incident side of the light modulator, and a turbulent flow plate disposed between the light modulator and the polarizer or the wave plate in a path along which the cooling air from the cooling unit flows toward a light incident surface of the light modulator, the turbulent flow plate having a fin that tapers from a base end toward a tip.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: April 21, 2015
    Assignee: Seiko Epson Corporation
    Inventors: Norikazu Kadotani, Akira Hashimoto, Akira Egawa
  • Patent number: 9004696
    Abstract: An image projection apparatus includes: a light source; an exhaust fan having a rotary shaft provided with at least one blade, the rotary shaft being rotated to exhaust air inside the apparatus to the outside of the apparatus; a guide having a sloped face that is sloped toward the exhaust fan, the sloped face having a first side surface facing the light source and a second side surface provided opposite of the first side surface; a first flow path, defined by the first side surface of the guide, to guide air heated by the light source toward the rotary shaft of the exhaust fan; and a second flow path, defined by the second side surface of the guide, to guide air having temperature lower than temperature of the air heated by the light source, toward the rotary shaft of the exhaust fan.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: April 14, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Akihisa Mikawa, Tetsuya Fujioka, Hideo Kanai, Masamichi Yamada, Yasunari Mikutsu, Satoshi Tsuchiya, Naoyuki Ishikawa, Yukimi Nishi
  • Patent number: 9004697
    Abstract: An image projection apparatus for projecting an image using light includes a light source configured to emit the light; and an operating unit configured to allow a user to operate the image projection apparatus, the operating unit being disposed above the light source when viewed from a placement surface on which a main body of the image projection apparatus is placed. The image projection apparatus also includes a first flow path in which air flows through the light source; and a second flow path different from the first flow path, the second flow path being formed between the light source and the operating unit.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: April 14, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Patent number: 8998425
    Abstract: An image projection apparatus for projecting an image using light includes a light source configured to emit the light; and an operating unit configured to allow a user to operate the image projection apparatus, the operating unit being disposed above the light source when viewed from a placement surface on which a main body of the image projection apparatus is placed. The image projection apparatus also includes a first flow path in which air flows through the light source; and a second flow path different from the first flow path, the second flow path being formed between the light source and the operating unit.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: April 7, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Publication number: 20150092165
    Abstract: An image projection apparatus includes: a light source; an exhaust fan having a rotary shaft provided with at least one blade, the rotary shaft being rotated to exhaust air inside the apparatus to the outside of the apparatus; a guide having a sloped face that is sloped toward the exhaust fan, the sloped face having a first side surface facing the light source and a second side surface provided opposite of the first side surface; a first flow path, defined by the first side surface of the guide, to guide air heated by the light source toward the rotary shaft of the exhaust fan; and a second flow path, defined by the second side surface of the guide, to guide air having temperature lower than temperature of the air heated by the light source, toward the rotary shaft of the exhaust fan.
    Type: Application
    Filed: July 18, 2014
    Publication date: April 2, 2015
    Applicant: RICOH COMPANY, LTD.
    Inventors: Akihisa MIKAWA, Tetsuya FUJIOKA, Hideo KANAI, Masamichi YAMADA, Yasunari MIKUTSU, Satoshi TSUCHIYA, Naoyuki ISHIKAWA, Yukimi NISHI
  • Publication number: 20150085260
    Abstract: A color wheel module and a projection apparatus are provided, wherein the color wheel module includes a color wheel, a cover and a flow detour duct. The cover shades the color wheel. The flow detour duct is communicated with the cover and has an airflow inlet and an airflow outlet. The rotating color wheel is configured to drive airflow into the flow detour duct from the airflow inlet, and cause the airflow through the color wheel and then discharged from the airflow outlet.
    Type: Application
    Filed: July 18, 2014
    Publication date: March 26, 2015
    Applicant: Coretronic Corporation
    Inventors: Tung-Chou Hu, Hsin-Hui Lien, Sheng-Yu Chiu
  • Publication number: 20150070660
    Abstract: A projector includes a light source, a light control apparatus having a light shield portion that shields light emitted from the light source, the light control apparatus adjusting the amount of light that passes therethrough, an optical element that is disposed on the light exiting side of the light shield portion and optically converts light incident on the optical element, a cooling fan that sends cooling air, and a duct that guides the cooling air sent from the cooling fan to the light shield portion and the optical element which are the targets to be cooled, wherein the duct has a blowoff port off which the guided cooling air is blown toward each target to be cooled, and the light shield portion changes the amount of covered blowoff port in accordance with the amount of light that the light shield portion shields.
    Type: Application
    Filed: August 11, 2014
    Publication date: March 12, 2015
    Inventors: Norikazu Kadotani, Masato Kadotani
  • Publication number: 20150070661
    Abstract: A projector includes: an external case provided with an opening through which light passes; a projection system disposed within an inside space of the external case, wherein the projection system includes a reflection member having a reflection surface capable of reflecting light received from a light source device to guide the light toward the opening, and projects the light to the outside of the external case via the opening; and a detection unit which detects a foreign material existing on the optical path of the light in the area of light exit of the opening.
    Type: Application
    Filed: November 14, 2014
    Publication date: March 12, 2015
    Inventors: Mika KOYAMA, Yasuyuki KOBAYASHI, Nobuyuki OTSUKI, Kiyomasa SHIRAKURA
  • Patent number: 8974063
    Abstract: An exhaust port shutter apparatus which is attached to an exhaust port of a projector, includes: a guide section in which a first guide groove is provided; louver boards each having a turning shaft pin, the louver boards in which each turning shaft pin is formed so as to have a length which allows the turning shaft pin to pass through the first guide groove and project to the outside of the guide section; and a cam roller that has a cam groove on a peripheral surface thereof, the cam groove into which each turning shaft pin fits, the cam roller that can reciprocate, by rotation thereof, each turning shaft pin by the cam groove along the first guide groove in a first direction, wherein the louver boards are rotated at a necessary angle as a result of the cam roller being rotated and open and close the exhaust port.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: March 10, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Naoto Takehana
  • Publication number: 20150029472
    Abstract: An optical device utilized in a laser projector includes a circulatory air channel, a phosphor wheel disposed in the circulatory air channel, a thermal exchanger partially disposed in the circulatory air channel, and an air guiding component disposed in the circulatory air channel for guiding an air provided by the thermal exchanger toward the phosphor wheel. The temperature of the air passing through the phosphor wheel is lower than an environment temperature.
    Type: Application
    Filed: December 4, 2013
    Publication date: January 29, 2015
    Applicant: DELTA ELECTRONICS, INC.
    Inventors: Chia-Jui LIN, Hsiu-Ming CHANG
  • Publication number: 20150015851
    Abstract: In a projector that includes a light source, an image forming unit, a projection optical unit, and a case to contain the light source, the image forming unit, the projection optical unit, and the power supply, takes outside air in through a first intake duct provided on the case, cools the power supply by circulating the taken outside air to the power supply circumventing the projection optical unit, and exhausts the air after cooling through an exhaust vent provided on the case. A second intake duct is provided nearby the power supply compared to the first intake duct, and the amount of outside air drawn into the case through the second intake duct is larger than the amount of outside air drawn into the case through the first intake duct.
    Type: Application
    Filed: June 24, 2014
    Publication date: January 15, 2015
    Inventors: Masamichi YAMADA, Tetsuya Fujioka, Naoyuki Ishikawa, Akihisa Mikawa, Hideo Kanai, Yasunari Mikutsu, Satoshi Tsuchiya
  • Patent number: 8919964
    Abstract: A light source device includes: a tubelar body disposed in the front side of a reflection mirror in the light emission direction and surrounding an arc tube; a pair of ducts connecting with the tubelar body and provided with a first channel and a second channel to guide air; and a channel switching mechanism which allows air to flow through the first channel or the second channel. The tubelar body includes a pair of communicating ports configured to supply air flowing through the first channel and the second channel toward the light emission portion. The pair of the communicating ports are disposed on a virtual line passing through the center line of the arc tube and crossing the vertical direction and the horizontal direction as viewed in a direction along the center line.
    Type: Grant
    Filed: February 28, 2012
    Date of Patent: December 30, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Takahiro Miyata
  • Publication number: 20140375967
    Abstract: A cooling structure includes: a heat releasing unit configured to include a plurality of fins and to release heat by contacting a first cooling target; and an air blowing unit configured to blow air to the heat releasing unit, wherein the heat releasing unit includes a first region and a second region in which intervals of the fins are smaller than those of the first region, and a second cooling target that is different from the first cooling target is positioned downstream relative to the first region in a flow path of the air, and the air that has passed through the first region blows on the second cooling target.
    Type: Application
    Filed: June 16, 2014
    Publication date: December 25, 2014
    Inventors: Akihisa MIKAWA, Tetsuya FUJIOKA, Hideo KANAI, Masamichi YAMADA, Yasunari MIKUTSU, Satoshi TSUCHIYA, Naoyuki ISHIKAWA
  • Publication number: 20140354958
    Abstract: A projector includes a light source apparatus, a light modulator that modulates a light flux outputted from the light source apparatus in accordance with image information, a projection lens that projects the light flux modulated by the light modulator, an exterior enclosure that accommodates the light source apparatus, the light modulator, and the projection lens, an exhaust fan (first exhaust fan) that exhausts air inside the exterior enclosure out thereof through an exhaust port (first light source exhaust port) provided in the exterior enclosure, and a functional device (wireless device) that provides a predetermined function and is heated to a temperature higher than the temperature of the exhaust air from the first exhaust fan. The wireless device is disposed in a position downstream of the first exhaust fan, and part of the exhaust air discharged from the first exhaust fan flows to the wireless device.
    Type: Application
    Filed: May 22, 2014
    Publication date: December 4, 2014
    Applicant: Seiko Epson Corporation
    Inventors: Hiroshi Tsuchitani, Kenichi Asami, Masatoshi Ito
  • Publication number: 20140354959
    Abstract: Cooling air conveyed through a cooling duct 3 is supplied to a discharge lamp 10 via a cooling air exit 21 having a plurality of flow paths 23a to 23c partitioned by a partition plate 22. An air flow direction changeover section 24 changes a flow path through which the discharge lamp is supplied with the cooling air from the cooling air exit. An air flow blocking ball 25 in the air flow direction changeover section moves by its own weight through a guide portion 26 to thereby block the flow path of the cooling air exit. This allows the cooling air to be directed specifically toward an upper side 11a in a direction of gravity of a lamp bulb of the discharge lamp to eliminate a temperature difference, even if a mounting style of the discharge lamp is varied among desk mounting, ceiling mounting, and vertical mounting.
    Type: Application
    Filed: August 15, 2014
    Publication date: December 4, 2014
    Inventors: Hiroshi MAEHARA, Hiroyuki INOUE, Hideharu SAITO, Takashi OMORI
  • Publication number: 20140347636
    Abstract: An image projection apparatus includes a light source, light from which is used to form an image to be projected, a first flow path, a control unit configured to control a light emission from the light source, an electrical power stabilizing unit configured to stabilize an electrical power to be supplied to the light source, and an electrical power source unit configured to supply the electrical power to at least one of the control unit and the electrical power stabilizing unit. One or both of the electrical power source unit and the electrical power stabilizing unit is/are divided into a plurality of boards. The light source is arranged on a normal line of a surface of any of the plurality of boards. The plurality of boards configure surfaces of the first flow path except a surface nearest to the light source.
    Type: Application
    Filed: August 7, 2014
    Publication date: November 27, 2014
    Inventors: Masamichi YAMADA, Tetsuya FUJIOKA, Yasutada TSUKIOKA, Naoyuki ISHIKAWA, Hideo KANAI
  • Publication number: 20140347637
    Abstract: An image projection apparatus for projecting an image using light includes a light source configured to emit the light; and an operating unit configured to allow a user to operate the image projection apparatus, the operating unit being disposed above the light source when viewed from a placement surface on which a main body of the image projection apparatus is placed. The image projection apparatus also includes a first flow path in which air flows through the light source; and a second flow path different from the first flow path, the second flow path being formed between the light source and the operating unit.
    Type: Application
    Filed: August 7, 2014
    Publication date: November 27, 2014
    Inventors: Tetsuya FUJIOKA, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Publication number: 20140340653
    Abstract: The purpose of the present invention is to provide a device that is small in size and low noise, in which heat from a light emitting element such as an LD or an LED is efficiently dissipated. A light source device includes a first light emitting element, a base plate, and an air flow device for sending out air. The base plate, which is thermally connected to the first light emitting element, has a flat surface formed around the first light emitting element to face the emitting direction of light output from the first light emitting element. The air flow device generates a flow of air toward the flat surface of the base plate in a direction perpendicular to the flat surface.
    Type: Application
    Filed: September 20, 2012
    Publication date: November 20, 2014
    Inventors: Hiroko Chifu, Motoyasu Utsunomiya
  • Patent number: 8888293
    Abstract: The image projection apparatus includes light modulation elements, a color separation/combination optical system (?) configured to, in a specific cross section, separate light source light into plural color lights, introduce the color lights to the corresponding light modulation elements, combine the modulated color lights and introduce the combined color lights to a projection optical system, a holding member holding the color separation/combination optical system, an electrical circuit substrate attached to the holding member parallel to the specific cross section and electrically connected to the light modulation elements, and an optical element insertable into and extractable from the color separation/combination optical system. The holding member has a configuration allowing, in a direction orthogonal to the specific cross section on an opposite side to an electrical circuit substrate side, the insertion/extraction of the optical element into and from the color separation/combination optical system.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: November 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takehiro Koyama
  • Patent number: 8888295
    Abstract: An apparatus projecting or displaying images to a viewer. The apparatus or Pepper's ghost system projects or displays an image stream onto a reflective element with a first surface receiving and reflecting a portion of light associated with the image stream to the viewer and a second surface opposite the first surface. The apparatus includes a cleaning assembly including an air supply providing a volume of flowing air and an ionizing mechanism for receiving the flowing air and outputting an ionized air flow. The ionized air flow is directed over the second surface of the reflective element. The reflective element is positioned at a non-vertical display angle. An outlet of the cleaning assembly is positioned adjacent an upper edge of the reflective element, and the ionized air flow is output from nozzles as laminar air flow with a flow rate chosen to mitigate dust collection on the upper second surface.
    Type: Grant
    Filed: July 2, 2012
    Date of Patent: November 18, 2014
    Assignee: Disney Enterprises, Inc.
    Inventors: Curtis Edwards, Thomas LaDuke, Daniel Beaumont
  • Patent number: 8882276
    Abstract: Methods and systems are provided for providing asymmetrical cooling for projectors. The projector can include two light assemblies, with each light assembly including a light source. The light assemblies are arranged horizontally adjacent to each other having both light assemblies facing in a direction of projected light from the light sources. On an outer side opposite the side adjacent to the other light assembly, each light assembly is accompanied by a pair of fans. One fan provides air to a top of the light assembly, and the other fan provides air to a bottom of the light assembly. More cooling air is provided to a top of the light assembly to cool a part of the light source that is hotter than the bottom part of the light source due to natural convection. The fan speeds can be varied based on a temperature measurement (e.g., using calibration tables) and/or based on other inputs.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: November 11, 2014
    Assignee: Projection Design AS
    Inventors: Ellen NordgÄrd-Hansen, Freddy Agnalt
  • Patent number: 8882277
    Abstract: An image projection apparatus includes a light source, light from which is used to project an image, and a holding member configured to hold the light source. The holding member includes a handle portion, and the handle portion includes a first flow path for flowing air.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: November 11, 2014
    Assignee: Ricoh Company, Limited
    Inventors: Tetsuya Fujioka, Masamichi Yamada, Yasutada Tsukioka, Naoyuki Ishikawa, Hideo Kanai
  • Publication number: 20140307232
    Abstract: There is provided a projection-type display device including an excitation light source configured to emit excitation light, a fluorescent member configured to emit fluorescent light when the excitation light from the excitation light source is condensed, a heat sink connected to the excitation light source, a single air blowing fan configured to cool the heat sink and the fluorescent member together, and an excitation light source control unit configured to control an output of the excitation light source, depending on a luminance level of an external video signal.
    Type: Application
    Filed: April 4, 2014
    Publication date: October 16, 2014
    Applicant: Sony Corporation
    Inventors: Yoshihisa Sato, Izushi Kobayashi