Particular Air Ducts Or Deflector Patents (Class 353/61)
  • Patent number: 11240476
    Abstract: An image projection device including: an analysis unit configured to compute a functional state of one or more devices included in the image projection device based on sensor information acquired from one or more sensors; a determination unit to determine whether or not maintenance of the devices is necessary based on the functional state of the devices; and a notification control unit to present guidance information that prompts for implementation of maintenance of the devices to a user through a notification unit at a timing when it is determined by the determination unit that maintenance is necessary.
    Type: Grant
    Filed: August 21, 2017
    Date of Patent: February 1, 2022
    Assignee: SONY CORPORATION
    Inventor: Takeaki Hirasawa
  • Patent number: 11163226
    Abstract: A light source system includes an excitation light source, a fluorescent plate that emits fluorescence when exposed to the excitation light from the excitation light source, and a compartment storing the fluorescent plate. The compartment has a heat-receiving section and a heat-dissipation section thermally connected to each other. The heat-receiving section is located opposite a fluorescence light output side of the fluorescent plate, in the compartment. The heat-dissipation section is outside the compartment.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: November 2, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventor: Makoto Maeda
  • Patent number: 11156906
    Abstract: A projector comprises a casing, a projection lens module and a light emitting module. The casing comprises a first air inlet and an air outlet. The projection lens module is disposed in the casing and adjacent to the first air inlet. The light emitting module is disposed in the casing and adjacent to the air outlet. The casing comprises a rear cover. The rear cover comprises a second air inlet, the second air inlet corresponds to the light emitting module. A first airflow flows into the casing from the first air inlet to dissipate heat from the projection lens module and the light emitting module, and then flows out of the air outlet. A second airflow flows into the casing from the second air inlet to dissipate heat from the light emitting module, and then flows out of the air outlet.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: October 26, 2021
    Assignee: Coretronic Corporation
    Inventors: Chih-Sheng Wu, Te-Tang Chen, Tsung-Ching Lin
  • Patent number: 11092799
    Abstract: A phosphor wheel apparatus includes: a substrate made of a heat conductive material having a first light reflectance, the substrate having first and second surfaces facing each other; a phosphor layer disposed on the first surface of the substrate; an adhesive layer bonding the substrate and the phosphor layer to each other; and a plurality of fins disposed on the second surface of the substrate, wherein the adhesive layer includes an adhesive having first thermal conductivity and filler particles, and the filler particles have second thermal conductivity higher than the first thermal conductivity, and have a second light reflectance higher than the first light reflectance.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: August 17, 2021
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Shigekazu Yamagishi, Yusaku Nishikawa
  • Patent number: 11029587
    Abstract: A projector includes a cooler configured to cool a cooling target based on transformation of a refrigerant into gas. A refrigerant generator includes a rotating moisture absorbing and releasing member, a first blower configured to send air to a portion of the member located in a first region, a heat exchanger, a heater configured to heat a portion of the member located in a second region, and a second blower configured to send, to the heat exchanger, air around the heated portion in the member. The heat exchanger includes a housing including an internal space into which the air sent by the second blower flows and a plurality of channels disposed in the internal space. Insides of the channels are separated from the internal space. Cooling air for cooling the air in the internal space via the channels flow through the insides of the channels.
    Type: Grant
    Filed: May 26, 2020
    Date of Patent: June 8, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Nobuo Sugiyama
  • Patent number: 11009783
    Abstract: A liquid cooled heat dissipation module includes a housing and at least one flow channel. The housing includes a chamber, and the at least one flow channel is located in the chamber. The housing includes an upper plate, a lower plate, and a plurality of annular wall portions. Two ends of each of the annular wall portions are respectively connected to the upper plate and the lower plate. The annular wall portions respectively form a plurality of through-holes between the upper plate and the lower plate, and the through-holes penetrate through the upper plate and the lower plate. The at least one flow channel is located between two adjacent annular wall portions. In addition, a projection device is also provided.
    Type: Grant
    Filed: July 18, 2019
    Date of Patent: May 18, 2021
    Assignee: Coretronic Corporation
    Inventors: Tsung-Ching Lin, Wei-Chi Liu
  • Patent number: 10962868
    Abstract: A projection device is disclosed. The projection device includes an air inlet, an air outlet, an optical engine, a heat sink, a fan and a combiner. A first passage is arranged between the air inlet and the air outlet for passing an air flow. The optical engine includes a light source and an imaging lens set outputting a projection light beam. The heat sink is connected to the optical engine, and a part of the heat sink is arranged in the first passage. The fan is arranged in the first passage. The combiner receives the projection light beam. The projection light beam moves in a propagating direction opposite to the entry direction.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: March 30, 2021
    Assignee: Young Optics Inc.
    Inventors: S-Wei Chen, Po-Ching Lu
  • Patent number: 10859897
    Abstract: A projection device includes a light source module for emitting an illumination beam, an optical engine module for receiving the illumination beam and forming an image beam, and a projection lens for receiving and projecting the image beam to an outside of the projection device. The optical engine module includes first and second shells coupled in a first direction, an elastic sealing member and electronic components. The shells form an accommodation space in which the electronic components are disposed. The elastic sealing member has opposite first and second surfaces. The first surface has an engagement groove in which a portion of the first shell is engaged. The second shell abuts against the second surface. Signal transmission components of the electronic components are disposed through the elastic sealing member to pass through the shells.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: December 8, 2020
    Assignee: Coretronic Corporation
    Inventors: Yi-Chang Chen, Chien-Chung Liao
  • Patent number: 10754233
    Abstract: An electronic device includes an electronic device main body and an accommodation apparatus accommodating the electronic device main body. The accommodation apparatus includes a first enclosure forming an internal space and having a first intake port and a first discharge port, a partitioner partitioning the internal space into a first space and a second space, and a first intake fan sending the air into the first space. The electronic device main body includes a second enclosure having a second intake port and a second discharge port, and a second intake fan sucking air into the electronic device main body. The second intake port is disposed in the first space. The second discharge port is disposed in the second space. The amount of air sent by the first intake fan into the first space is greater than the amount of air sucked by the second intake fan into the second enclosure.
    Type: Grant
    Filed: July 24, 2019
    Date of Patent: August 25, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Kazuyuki Iinuma
  • Patent number: 10564530
    Abstract: A projector includes a light source device and a cooling device. The light source device includes a first light source having a plurality of first light emitting elements, a second light source having a plurality of second light emitting elements, and a light combining member adapted to combine light. The cooling device includes a first cooling section adapted to cool the first light emitting elements with a liquid refrigerant so that a first temperature difference increases in a first direction, and a second cooling section adapted to cool the second light emitting elements with a liquid refrigerant so that a second temperature difference increases in a second direction. The first and second light sources are arranged so that an illuminance distribution caused by the first temperature difference and an illuminance distribution caused by the second temperature difference are canceled out in the light combining member.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: February 18, 2020
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takahiro Suzuki, Takahiro Miyata, Makoto Zakoji
  • 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: 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: 9033515
    Abstract: A heat dissipation device of a light engine for a projector has a housing, a fan module, a light engine and a heat sink. The light engine is positioned in the housing and connected to the heat sink. The heat sink is positioned out of the housing. The housing has a fan-enclosed flow channel attached on an outer surface of the housing. The fan module is guided by the fan-enclosed flow channel to the heat sink to enhance heat dissipation efficiency of the light engine for the projector.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 19, 2015
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Ming-Chih Sun, Kai Huang
  • Patent number: 9028073
    Abstract: A projection apparatus includes an optical engine base, a light source, a light valve, a lens module, and a fan. The light source is disposed at the optical engine base for emitting an illumination beam. The light valve is disposed at the optical engine base for converting the illumination beam into an image beam. The lens module is disposed at the optical engine base and includes a lens barrel and a lens assembly disposed in the lens barrel for converting the image beam into a projection beam. The fan is disposed at the optical engine base, and adjacent to the lens module. The fan is used for providing an air flow to cool the lens module.
    Type: Grant
    Filed: March 21, 2012
    Date of Patent: May 12, 2015
    Assignee: Coretronic Corporation
    Inventors: Chuan-Te Cheng, Tao-Hung Kuo
  • Patent number: 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: 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: 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: 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: 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: 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: 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: 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