Patents by Inventor Keiichi Shimizu

Keiichi Shimizu 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).

  • Lighting apparatus
    Patent number: 8042973
    Abstract: A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: October 25, 2011
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Masaru Inoue, Keiichi Shimizu, Sumio Hashimoto, Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Masatoshi Kumagai
  • COMMUNICATION SYSTEM AND COMMUNICATION DEVICE
    Publication number: 20110196976
    Abstract: A communication system including a SIP client, a proxy, and a node. When the node relays a SIP message sent for the SIP client, the node replaces management information set up in a parameter with an ID, and stores the ID and the management information by associating them with each other. When the node relays a SIP message in which the stored ID is set up, the node replaces the ID with the management information associated with the ID. When an ID is set up in a parameter of a received SIP message, the SIP client stores the parameter and the ID by associating them with each other. When the client sends a SIP message that includes the stored parameter, an ID associated with the parameter is set up in the parameter.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 11, 2011
    Applicants: Mitsubishi Electric Corporation, NTT DOCOMO, INC.
    Inventors: Keiichi Shimizu, Masahiro Inoue
  • ILLUMINATING DEVICE
    Publication number: 20110148322
    Abstract: To a constant-current power supply whose output current can be variably set, light emitting modules can be connected in parallel. A control unit recognizes connection information outputted from an information output unit provided in each of the light emitting modules and varies the output current of the constant-current power supply. Drive can be controlled in response to a state of the connected light emitting modules such as the connecting number of light emitting modules.
    Type: Application
    Filed: March 1, 2011
    Publication date: June 23, 2011
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
  • Illuminating device
    Patent number: 7952295
    Abstract: To a constant-current power supply whose output current can be variably set, light emitting modules can be connected in parallel. A control unit recognizes connection information outputted from an information output unit provided in each of the light emitting modules and varies the output current of the constant-current power supply. Drive can be controlled in response to a state of the connected light emitting modules such as the connecting number of light emitting modules.
    Type: Grant
    Filed: May 30, 2008
    Date of Patent: May 31, 2011
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
  • POWER SUPPLY DEVICE AND LIGHTING EQUIPMENT
    Publication number: 20110057576
    Abstract: In a power supply device according to one embodiment, a reference signal Vref1, which changes from a value corresponding to a maximum current in a full lighting state to that corresponding to a minimum current in case of a deepest dimming depth, and a reference signal Vref2, which changes from a value corresponding to a load voltage at the time of a maximum current in a full lighting state to that corresponding to a minimum current in case of the deepest dimming depth, are prepared in accordance with dimming depths of a dimming signal. In a shallow dimming depth region close to a full lighting state, the reference signal Vref1 is selected to apply constant-current control to light-emitting diodes in a current control mode. In a deep dimming depth region, the reference signal Vref2 is selected to apply constant-voltage control to the diodes in a voltage control mode.
    Type: Application
    Filed: September 1, 2010
    Publication date: March 10, 2011
    Inventors: Hirokazu OTAKE, Mitsuhiko Nishiie, Takuro Hiramatsu, Keiichi Shimizu
  • SELF-BALLASTED LAMP AND LIGHTING EQUIPMENT
    Publication number: 20100301748
    Abstract: The invention provides a self-ballasted lamp having high heat radiation performance, which is lightweight and inexpensive. A substrate having LED elements mounted is provided at one edge side of the radiator, and a cap is provided at the other edge side the radiator. A lighting circuit is accommodated between the radiator and the cap. The radiator includes a cylindrical cover member and an annular radiation member fitted to the outer circumferential part of the cover member and is composed by combining the cover member and the radiation member together. The cover member and the radiation member are made of metal and are formed by press-working.
    Type: Application
    Filed: May 27, 2010
    Publication date: December 2, 2010
    Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Makoto SAKAI, Toshiya Tanaka, Keiichi Shimizu, Hitoshi Kawano
  • Shaft Sealing Device for a Fluid Machine
    Publication number: 20100230905
    Abstract: A shaft sealing device (80) that partitions a high-pressure zone and a low-pressure zone from each other in a fluid machine has an elastic member (86) including a seal portion (88) that is brought into sliding contact with a seat face of a contact-target member that is either a rotary shaft (60) or a casing (12), and a case (82) that supports the elastic member (86). The elastic member (86) has a first elastic portion that continues to a high-pressure side boundary of the seal portion (88), which is located in the high-pressure zone side, and a second elastic portion that continues to a low-pressure side boundary of the seal portion (88), which is located in the low-pressure zone side. The case (82) restrains regions of the first and second elastic portions, the regions being located away from the seal portion (88).
    Type: Application
    Filed: March 26, 2007
    Publication date: September 16, 2010
    Applicant: Sanden Corporation
    Inventors: Jiro Iizuka, Takashi Fukumuro, Keiichi Shimizu, Iwao Uchikado, Hidenori Hosoi, Yuji Oowa
  • Layer 2 switch network system
    Patent number: 7787476
    Abstract: A layer 2 switch network system includes a terminal, an edge switch, and a Radius server that notifies the edge switch of a temporary MAC address allocated to the terminal. The edge switch stores therein swap data for associating the temporary MAC address with a real MAC address. When receiving a MAC frame from the terminal, the edge switch replaces the real MAC address of a source set in the MAC frame with the temporary MAC address of the source. When transmitting a MAC frame to the terminal, the edge switch replaces the temporary MAC address of a destination set in the MAC frame with the real MAC address of the destination.
    Type: Grant
    Filed: March 3, 2004
    Date of Patent: August 31, 2010
    Assignees: Mitsubishi Electric Corporation, National Institute of Information and Communications Technology, Incorporated Administrative Agency
    Inventors: Keiichi Shimizu, Masahiro Kuroda
  • LAMP SYSTEM AND LIGHTING APPARATUS
    Publication number: 20100208473
    Abstract: A lamp system which can improve radiation performance is provided. A metallic heat conduction part provided along a peripheral portion of a metallic cover is fitted with a resin heat conduction part provided along a peripheral portion of a transparent cover so as to thermally contact each other. Heat generated by an LED is radiated into air from the metallic cover and at the same time is efficiently conducted from the metallic cover to the transparent cover to be radiated into air from the transparent cover.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 19, 2010
    Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: MAKOTO SAKAI, Keiichi Shimizu, Toshiya Tanaka, Shigeru Osawa, Takeshi Hisayasu, Kozo Ogawa, Takumi Suwa, Hiotshi Kawano
  • LIGHTING APPARATUS
    Publication number: 20100195328
    Abstract: A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector.
    Type: Application
    Filed: April 9, 2010
    Publication date: August 5, 2010
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Masaru Inoue, Keiichi Shimizu, Sumio Hashimoto, Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Masatoshi Kumagai
  • LIGHTING APPARATUS
    Publication number: 20100195329
    Abstract: A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector.
    Type: Application
    Filed: April 9, 2010
    Publication date: August 5, 2010
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Masaru Inoue, Keiichi Shimizu, Sumio Hashimoto, Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Masatoshi Kumagai
  • LIGHTING APPARATUS
    Publication number: 20100195327
    Abstract: A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector.
    Type: Application
    Filed: April 9, 2010
    Publication date: August 5, 2010
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: MASARU INOUE, Keiichi Shimizu, Sumio Hashimoto, Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Masatoshi Kumagai
  • LIGHT-EMITTING MODULE AND ILLUMINATION APPARATUS
    Publication number: 20100149783
    Abstract: A light-emitting module includes at least one light-emitting element provided on a mount surface of a substratum. A translucent member is provided so as to face the mount surface of the substratum. The translucent member is separated from the light-emitting element and contains a phosphor material that converts a wavelength of light emitted by the light-emitting element. A frame having heat conducting properties is interposed between the substratum and the translucent member. The frame surrounds the light-emitting element. The frame includes an opening that leads light emitted by the light-emitting element to the translucent member, and a heat conductor thermally connected to the translucent member. The heat conductor includes a heat radiator exposed outside of the translucent member.
    Type: Application
    Filed: December 10, 2009
    Publication date: June 17, 2010
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Erika TAKENAKA, Kozo Ogawa, Keiichi Shimizu, Hiroaki Watanabe, Akimichi Takahashi, Shinji Nogi, Shinichi Kumashiro
  • LIGHTING FIXTURE
    Publication number: 20100128480
    Abstract: A lighting fixture includes a light-emitting section composed of a plurality of semiconductor light-emitting devices arranged separated from one another on a planar substrate and a lighting control section configured to control lighting of the semiconductor light-emitting devices of the light-emitting section. The light-emitting section is attached at a front of a fixture main body, and a convection generation section configured to generate convection is provided at a back of the fixture main body. The convection generation section generates convection and promotes heat radiation. With the configuration, even if the lighting fixture is installed to abut on a ceiling surface, the effect of radiating heat generated by the semiconductor light-emitting devices can be ensured.
    Type: Application
    Filed: November 23, 2009
    Publication date: May 27, 2010
    Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroaki Watanabe, Erika Takenaka, Kozo Ogawa, Keiichi Shimizu, Tatsuo Maruyama
  • Lighting apparatus
    Patent number: 7722213
    Abstract: A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: May 25, 2010
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Masaru Inoue, Keiichi Shimizu, Sumio Hashimoto, Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Masatoshi Kumagai
  • LIGHTING DEVICE INCLUDING TRANSLUCENT COVER FOR DIFFUSING LIGHT FROM LIGHT SOURCE
    Publication number: 20100124064
    Abstract: A lighting device includes a light source configured to radiate light toward a floor from a ceiling, a reflecting mirror provided around the light source, and shading angle setting element configured to define a range in which the light from the light source is radiated by setting a shading angle with respect to the light radiated from the light source. The light source, the reflecting mirror and the shading angle setting element are covered by a translucent cover. The translucent cover has an in-line transmittance. An in-line transmittance of the translucent cover of a position corresponding to an optical axis of the light source and an in-line transmittance of the translucent cover of a position deviated from the optical axis are different from each other.
    Type: Application
    Filed: November 17, 2009
    Publication date: May 20, 2010
    Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Kozo Ogawa, Akimichi Takahashi, Erika Takenaka, Hiroaki Watanabe, Keiichi Shimizu, Shinji Nogi, Shinichi Kumashiro
  • Coating composition for cans
    Patent number: 7714042
    Abstract: The present invention provides a coating composition for cans comprising 100 parts by mass of a neutralized acrylic resin-modified epoxy resin (A), and from 1 to 50 parts by mass of anionic polymer crosslinked fine particles (B), (A) and (B) being dispersed in an aqueous medium, wherein the anionic polymer fine particles (B) are polymer fine particles comprising a polymer having an acid value of from 10 to 120 mg KOH/g and being produced by polymerizing radically polymerizable unsaturated monomers comprising from 2 to 30% by mass of a carboxyl group-containing radically polymerizable unsaturated monomer (b1), from 2 to 30% by mass of a polyvinyl compound (b2) and from 40 to 96% by mass of other radically polymerizable unsaturated monomer (b3) in the presence of water.
    Type: Grant
    Filed: March 23, 2007
    Date of Patent: May 11, 2010
    Assignee: Kansai Paint Co., Ltd.
    Inventors: Masaaki Saika, Hideki Matsuda, Yuuichi Inada, Naoki Horike, Sumio Noda, Hideki Masuda, Keiichi Shimizu, Hiromi Harakawa
  • LIGHTING APPARATUS
    Publication number: 20100079087
    Abstract: The present invention comprises a lighting apparatus main body having a reflecting surface, a main light source arranged in the reflecting surface of the lighting apparatus main body, a sub-light source which is arranged at the lighting apparatus main body and illuminates the neighborhood of the main light source directly, and a control circuit which controls the main light source and the sub-light source. Since the lighting apparatus illuminates downward with a direct illumination of the main light source and an indirect illumination of the sub-light source, the glare of the main light source is reduced.
    Type: Application
    Filed: September 30, 2009
    Publication date: April 1, 2010
    Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroaki WATANABE, Keiichi Shimizu, Kozo Ogawa, Erika Takenaka, Akimichi Takahashi, Shinji Nogi, Shinichi Kumashiro
  • Light emitting diode module
    Patent number: D618827
    Type: Grant
    Filed: June 14, 2007
    Date of Patent: June 29, 2010
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Jun Matsumoto, Keiichi Shimizu, Sumio Hashimoto, Masaru Inoue
  • Lamp socket
    Patent number: D623593
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: September 14, 2010
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Takeshi Osada, Satoshi Watanabe, Shizuka Sakamoto, Keiichi Shimizu