Patents by Inventor Keita Tsukioka

Keita Tsukioka has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250004355
    Abstract: A projector according to the present disclosure includes a light source, a first heat generator, and an optical apparatus that temporally displaces the optical path of the light output from the light source, the optical apparatus including a first transmissive optical part, a first driver that rotates the first transmissive optical part, and a first blade part that is coupled to the first transmissive optical part and generates an airflow that cools the first heat generator, the first transmissive optical part rotating around a first axis of rotation along a second direction that intersects with a first direction in which the light output from the light source is incident on the first transmissive optical part to displace the optical path of the light, and the first driver rotating the first blade part along with the first transmissive optical part to generate the airflow.
    Type: Application
    Filed: June 26, 2024
    Publication date: January 2, 2025
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Takuo YONEYAMA, Keita Tsukioka
  • Publication number: 20240402583
    Abstract: A projector includes an exterior housing having a first wall, an introduction port via which outside air is introduced as a cooling gas into the exterior housing, and a discharge port via which the cooling gas is discharged, a first cooling target disposed at the inner surface of the first wall, a cooling fan including an intake portion that sucks the cooling gas and a sending portion that sends the sucked cooling gas, a first flow path that cause the cooling gas to flow between the introduction port and the intake portion, and a second flow path that cause the cooling gas to flow between the sending portion and the discharge port. The first flow path is formed by a first surface of the first cooling target, and the second flow path is formed by a second surface different from the first surface in the first cooling target.
    Type: Application
    Filed: May 30, 2024
    Publication date: December 5, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Toshio MATSUMIYA, Keita TSUKIOKA, Yosuke NAKATA, Nobuyuki OTSUKI
  • Publication number: 20240402582
    Abstract: A projector includes an exterior housing having a first wall and a second wall opposite from each other, a third wall and a fourth wall opposite from each other, and a fifth wall and a sixth wall opposite from each other, a speaker unit including a first sound emitter provided in the speaker housing, and an intake fan. The first wall includes a communication port serving as a sound emission port of the first sound emitter, the fifth wall includes a contact portion that comes into contact with an installation surface, a noncontact portion that does not come into contact with the installation surface, and an air intake port provided at the noncontact portion, and the air intake fan communicates with the communication port and the air intake port.
    Type: Application
    Filed: May 31, 2024
    Publication date: December 5, 2024
    Inventors: Nobuyuki OTSUKI, Keita TSUKIOKA, Toshio MATSUMIYA
  • Publication number: 20240402584
    Abstract: A projector includes an exterior housing having a discharge port, a first cooling target including a plurality of fins, a second cooling target, a first cooling fan that sends cooling air to the first and second cooling targets, and a second cooling fan that creates a positive pressure in the exterior housing. The second cooling target is disposed at a position where the positive pressure is created inside the exterior housing. The cooling air from the first cooling fan flows to the discharge port with the aid of the delivery force produced by the first cooling fan, and the cooling air flowing from the first cooling fan to the second cooling target flows to the discharge port with the positive pressure in the exterior housing acting on the cooling air.
    Type: Application
    Filed: May 31, 2024
    Publication date: December 5, 2024
    Inventors: Toshio MATSUMIYA, Keita TSUKIOKA, Nobuyuki OTSUKI
  • Publication number: 20240267497
    Abstract: A projector includes a polarization separator that reflects first polarized white light from a light source apparatus and transmit second polarized white light from the light source apparatus, a reflective liquid crystal panel that has first pixels that output first image light as a result of modulation of first color light contained in the first polarized white light and being the second polarized light, second pixels that output second image light as a result of modulation of second color light contained in the first polarized white light and being the second polarized light, and third pixels that output third image light as a result of modulation of third color light contained in the first polarized white light and being the second polarized light, a reflective color filter, and a projection lens that projects the first to third image light being the second polarized light.
    Type: Application
    Filed: February 2, 2024
    Publication date: August 8, 2024
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Keita TSUKIOKA, Takuo Yoneyama
  • Patent number: 11953815
    Abstract: A projector includes a light source device, an image projection device configured to modulate light emitted from the light source device to generate image light and project the image light, a power supply device configured to supply electric power to the light source device and the image projection device, a housing configured to house the light source device, the image projection device, and the power supply device, a first discharge fan configured to set at least one device of the light source derive, the image projection device, and the power supply device as a cooling target and suck gas from the cooling target and discharge the gas, a second discharge fan configured to discharge the gas discharged by the first discharge fan and the gas in the housing to an outside of the housing, and a duct for circulating the gas discharged by the first discharge fan to the second discharge fan.
    Type: Grant
    Filed: March 30, 2022
    Date of Patent: April 9, 2024
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Keita Tsukioka, Yasuteru Miyaoka
  • Publication number: 20230180427
    Abstract: A projector includes an exterior housing taking in outside air via a filter, , a suction fan having an intake opening taking in the outside air, a front chamber communicating with the filter and the intake opening, a pressure sensor placed in the front chamber, and a control unit drive-controlling the suction fan. The control unit executes first measurement processing of activating the suction fan and measuring pressure of the front chamber at a rotation number at the activation by the pressure sensor, second measurement processing of setting a rotation number of the suction fan to a rotation number lower than the rotation number at the activation and measuring the pressure of the front chamber by the pressure sensor, and determination processing of determining clogging of the filter based on a difference between a pressure value of the first measurement processing and a pressure value of the second measurement processing.
    Type: Application
    Filed: December 6, 2022
    Publication date: June 8, 2023
    Inventors: Keita TSUKIOKA, Kazunori MAETA
  • Publication number: 20220317552
    Abstract: A projector includes a light source device, an image projection device configured to modulate light emitted from the light source device to generate image light and project the image light, a power supply device configured to supply electric power to the light source device and the image projection device, a housing configured to house the light source device, the image projection device, and the power supply device, a first discharge fan configured to set at least one device of the light source derive, the image projection device, and the power supply device as a cooling target and suck gas from the cooling target and discharge the gas, a second discharge fan configured to discharge the gas discharged by the first discharge fan and the gas in the housing to an outside of the housing, and a duct for circulating the gas discharged by the first discharge fan to the second discharge fan.
    Type: Application
    Filed: March 30, 2022
    Publication date: October 6, 2022
    Inventors: Keita TSUKIOKA, Yasuteru MIYAOKA
  • Patent number: 10353278
    Abstract: A projector includes an exterior housing including an exhaust port and a cooling device provided in the exterior housing and configured to discharge the air, which has cooled a cooling target, to the outside of the exterior housing via the exhaust port. The exterior housing includes a partition member that partitions the exhaust port and forms a plurality of openings. The partition member includes projecting sections projecting from an end edge of at least one of the plurality of openings into the opening.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: July 16, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Norikazu Kadotani, Keita Tsukioka
  • Patent number: 10146111
    Abstract: A light adjuster includes: a first light shield and a second light shield disposed across a central axis of an emitted light beam; a drive section; a movement mechanism configured to move the first light shield and the second light shield using a driving force; a board; and a cover member combined with the board, in which the movement mechanism includes: a pinion gear; and a first gear and a second gear configured to be rotated in conjunction with a rotation of the pinion gear, the first light shield is attached to the first gear, the second light shield is attached to the second gear, and the cover member supports the first gear and the second gear so that the first gear and the second gear are rotatable, and is combined with the board to cover the pinion gear, the first gear and the second gear.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: December 4, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Akira Nemura, Shinichi Wakabayashi, Keita Tsukioka, Satoshi Chikuni
  • Patent number: 10018898
    Abstract: A projector includes a cooling fan that discharges cooling air toward a liquid crystal panel as a target to be cooled, a liquid crystal panel frame that holds the liquid crystal panel, and a turbulence generator that is disposed at an upstream-side end portion of the liquid crystal panel in relation to the cooling air, converts the cooling air into turbulence, and causes the turbulence to flow toward the liquid crystal panel, and the turbulence generator includes an inclined section having an inclined surface and a plate-shaped protruding section formed on the inclined surface and inclined by an inclination angle with respect to a direction in which the cooling air flows into the turbulence generator.
    Type: Grant
    Filed: March 16, 2016
    Date of Patent: July 10, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Norikazu Kadotani, Keita Tsukioka
  • Publication number: 20180031956
    Abstract: A light adjuster includes: a first light shield and a second light shield disposed across a central axis of an emitted light beam; a drive section; a movement mechanism configured to move the first light shield and the second light shield using a driving force; a board; and a cover member combined with the board, in which the movement mechanism includes: a pinion gear; and a first gear and a second gear configured to be rotated in conjunction with a rotation of the pinion gear, the first light shield is attached to the first gear, the second light shield is attached to the second gear, and the cover member supports the first gear and the second gear so that the first gear and the second gear are rotatable, and is combined with the board to cover the pinion gear, the first gear and the second gear.
    Type: Application
    Filed: July 20, 2017
    Publication date: February 1, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Akira NEMURA, Shinichi WAKABAYASHI, Keita TSUKIOKA, Satoshi CHIKUNI
  • Publication number: 20170357149
    Abstract: A projector includes an exterior housing including an exhaust port and a cooling device provided in the exterior housing and configured to discharge the air, which has cooled a cooling target, to the outside of the exterior housing via the exhaust port. The exterior housing includes a partition member that partitions the exhaust port and forms a plurality of openings. The partition member includes projecting sections projecting from an end edge of at least one of the plurality of openings into the opening.
    Type: Application
    Filed: December 9, 2015
    Publication date: December 14, 2017
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Norikazu KADOTANI, Keita TSUKIOKA
  • Publication number: 20160282706
    Abstract: A projector includes a cooling fan that discharges cooling air toward a liquid crystal panel as a target to be cooled, a liquid crystal panel frame that holds the liquid crystal panel, and a turbulence generator that is disposed at an upstream-side end portion of the liquid crystal panel in relation to the cooling air, converts the cooling air into turbulence, and causes the turbulence to flow toward the liquid crystal panel, and the turbulence generator includes an inclined section having an inclined surface and a plate-shaped protruding section formed on the inclined surface and inclined by an inclination angle with respect to a direction in which the cooling air flows into the turbulence generator.
    Type: Application
    Filed: March 16, 2016
    Publication date: September 29, 2016
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Norikazu KADOTANI, Keita TSUKIOKA
  • Patent number: 9285661
    Abstract: A projector includes a light source section that outputs light, a light modulator that modulates the light outputted from the light source section based on image information, a projection lens that projects the modulated light, an enclosure that accommodates the light source section, the light modulator, and the projection lens, a base that supports the projection lens and fixes the projection lens to the enclosure, and a restricting portion that restricts movement of the base.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: March 15, 2016
    Assignee: Seiko Epson Corporation
    Inventor: Keita Tsukioka
  • Publication number: 20140111778
    Abstract: A projector includes a light source section that outputs light, a light modulator that modulates the light outputted from the light source section based on image information, a projection lens that projects the modulated light, an enclosure that accommodates the light source section, the light modulator, and the projection lens, a base that supports the projection lens and fixes the projection lens to the enclosure, and a restricting portion that restricts movement of the base.
    Type: Application
    Filed: October 16, 2013
    Publication date: April 24, 2014
    Applicant: Seiko Epson Corporation
    Inventor: Keita Tsukioka