Patents by Inventor Shu Namba
Shu Namba 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).
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Publication number: 20230046063Abstract: A cooling device of a projection display apparatus includes a first heat receiving unit including an opening that is rectangular. The first heat receiving unit includes a flow path part that forms the opening. An image display element of the projection display apparatus includes a first front face located in front of a reflective image display, a second front face parallel to the first front face and located behind and outside the first front face, and a first side face located between the first front face and the second front face. The first front face is inserted into the opening, and the flow path part is in contact with the first side face and the second front face via a heat conductive member. The flow path part includes a front face that is flush with or in front of the first front face of the image display element.Type: ApplicationFiled: November 2, 2022Publication date: February 16, 2023Inventors: Shigekazu YAMAGISHI, Toshihiko MATSUDA, Shu NAMBA
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Patent number: 10237524Abstract: A lighting device includes a light source, a rod-integrator, a light guiding section for guiding light emitted from the light source to an incident face of the rod-integrator and a first reflecting plate. The first reflecting plate has a through-hole and is adjacent to the incident face of the rod-integrator with the rod-integrator being inserted into the through-hole of the first reflecting plate. The first reflecting plate is configured to reflect unnecessary light emitted from the light guiding section, the unnecessary light not entering incident light.Type: GrantFiled: July 19, 2017Date of Patent: March 19, 2019Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Shu Namba
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Patent number: 9915858Abstract: A cooling device cools down a wheel having a disc shape. The wheel is hermetically enclosed in an enclosure and rotationally driven about a rotation shaft. The cooling device includes blade members that are disposed on one surface of the wheel, a heat dissipater to which a gas heated by the wheel is blown by the blade members due to rotation of the wheel, and a gas flow definer that is located inside the enclosure, and separates a flow path along which the gas that has been cooled by the heat dissipater flows before being blown to the one surface and a flow path along which the gas that has been blown to the one surface and heated flows.Type: GrantFiled: January 3, 2017Date of Patent: March 13, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Manabu Chikayama, Shigekazu Yamagishi, Shu Namba
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Publication number: 20180041740Abstract: The lighting device of the present disclosure includes a light source, a rod-integrator, a light guiding section for guiding light emitted from the light source to an incident face of the rod-integrator and a first reflecting plate. The first reflecting plate has an opening and is disposed closely to the incident face with the rod-integrator being inserted into the opening. This first reflecting plate reflects unnecessary light among light emitted from the light guiding section, the unnecessary light not entering the incident light.Type: ApplicationFiled: July 19, 2017Publication date: February 8, 2018Inventor: SHU NAMBA
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Publication number: 20170192346Abstract: A cooling device cools down a wheel having a disc shape. The wheel is hermetically enclosed in an enclosure and rotationally driven about a rotation shaft. The cooling device includes blade members that are disposed on one surface of the wheel, a heat dissipater to which a gas heated by the wheel is blown by the blade members due to rotation of the wheel, and a gas flow definer that is located inside the enclosure, and separates a flow path along which the gas that has been cooled by the heat dissipater flows before being blown to the one surface and a flow path along which the gas that has been blown to the one surface and heated flows.Type: ApplicationFiled: January 3, 2017Publication date: July 6, 2017Inventors: Manabu CHIKAYAMA, Shigekazu YAMAGISHI, Shu NAMBA
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Patent number: 9388972Abstract: A light source apparatus of the present disclosure includes a semiconductor light source, a light source holding member on which the semiconductor light source is disposed, the light source holding member being made of a thermal conductive material, and a cooling member that radiates heat generated by the semiconductor light source through the light source holding member. In addition, the light source apparatus includes an optical lens, an optical lens holding member that holds the optical lens and that is disposed on a light-emitting portion side of the semiconductor light source, and a thermal conductive member having a hole that houses a light-emitting portion of the semiconductor light source. The thermal conductive member is sandwiched between the light source holding member and the optical lens holding member, and comes into close contact with a side surface of the light-emitting portion.Type: GrantFiled: December 17, 2013Date of Patent: July 12, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventor: Shu Namba
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Patent number: 9122137Abstract: The shield includes: a first dust-proof wall that is shiftable integrally with the projection lens, and has width a1 projecting from the projection lens to an A side; and a second dust-proof wall that is slidable within a range regulated by the regulator, and has length b1 on the A side. When the second dust-proof wall has length c2 shiftable to a B side, the projection lens and the second dust-proof wall form a space having length d1 on the A side, and the projection lens and the frame form a space having length e1 on the A side, a1?d1, b1?e1?d1, and b1+d1?e1?c2 are satisfied.Type: GrantFiled: December 3, 2013Date of Patent: September 1, 2015Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Shigekazu Yamagishi, Masato Tanaka, Shu Namba
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Publication number: 20140168616Abstract: A light source apparatus of the present disclosure includes a semiconductor light source, a light source holding member on which the semiconductor light source is disposed, the light source holding member being made of a thermal conductive material, and a cooling member that radiates heat generated by the semiconductor light source through the light source holding member. In addition, the light source apparatus includes an optical lens, an optical lens holding member that holds the optical lens and that is disposed on a light-emitting portion side of the semiconductor light source, and a thermal conductive member having a hole that houses a light-emitting portion of the semiconductor light source. The thermal conductive member is sandwiched between the light source holding member and the optical lens holding member, and comes into close contact with a side surface of the light-emitting portion.Type: ApplicationFiled: December 17, 2013Publication date: June 19, 2014Applicant: PANASONIC CORPORATIONInventor: Shu NAMBA
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Publication number: 20140160449Abstract: The shield includes: a first dust-proof wall that is shiftable integrally with the projection lens, and has width a1 projecting from the projection lens to an A side; and a second dust-proof wall that is slidable within a range regulated by the regulator, and has length b1 on the A side. When the second dust-proof wall has length c2 shiftable to a B side, the projection lens and the second dust-proof wall form a space having length d1 on the A side, and the projection lens and the frame form a space having length e1 on the A side, a1?d1, b1?e1?d1, and b1+d1?e1?c2 are satisfied.Type: ApplicationFiled: December 3, 2013Publication date: June 12, 2014Applicant: Panasonic CorporationInventors: Shigekazu YAMAGISHI, Masato TANAKA, Shu NAMBA
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Patent number: 8596796Abstract: A projection display device that includes: a light source unit 1 that includes a discharge lamp 2 as a light source; an image formation unit; a projection optical system; and a light source cooling unit that cools the light source unit. The light source unit is disposed so that a lamp axis that connects two discharge electrodes of the discharge lamp is orthogonal to a projecting direction of the projection optical system, and the light source unit includes: a concave mirror 3; and a transparent part 4 that covers an opening of the concave mirror.Type: GrantFiled: September 9, 2009Date of Patent: December 3, 2013Assignee: Panasonic CorporationInventors: Shu Namba, Shigekazu Yamagishi, Yoshimasa Fushimi, Naoko Yamashita
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Patent number: 8022348Abstract: A projection type display apparatus includes a plurality of light sources 7a-7d, a display device unit 5, a light-combining unit 3 that combines output light from the plural light sources, a condensing unit 4 that propagates output light from the light-combining unit to the display device unit, and a projecting unit 6 that projects an image by the use of output light from the display device unit. In the projection type display apparatus, cooling units having fans 21a-21d are disposed respectively on the plural light sources, and a controlling unit 31 is provided to control the cooling units. Information regarding the lighting state of the plural light sources is inputted into the controlling unit, and the controlling unit controls a rotation rate of the fans of the cooling units with reference to the information.Type: GrantFiled: July 17, 2009Date of Patent: September 20, 2011Assignee: Panasonic CorporationInventors: Shu Namba, Naoko Yamashita, Daisuke Yaeo
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Publication number: 20100091252Abstract: A projection display device that includes: a light source unit 1 that includes a discharge lamp 2 as a light source; an image formation unit; a projection optical system; and a light source cooling unit that cools the light source unit. The light source unit is disposed so that a lamp axis that connects two discharge electrodes of the discharge lamp is orthogonal to a projecting direction of the projection optical system, and the light source unit includes: a concave mirror 3; and a transparent part 4 that covers an opening of the concave mirror.Type: ApplicationFiled: September 9, 2009Publication date: April 15, 2010Applicant: PANASONIC CORPORATIONInventors: Shu NAMBA, Shigekazu YAMAGISHI, Yoshimasa FUSHIMI, Naoko YAMASHITA
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Publication number: 20100026965Abstract: A projection type display apparatus includes a plurality of light sources 7a-7d, a display device unit 5, a light-combining unit 3 that combines output light from the plural light sources, a condensing unit 4 that propagates output light from the light-combining unit to the display device unit, and a projecting unit 6 that projects an image by the use of output light from the display device unit. In the projection type display apparatus, cooling units having fans 21a-21d are disposed respectively on the plural light sources, and a controlling unit 31 is provided to control the cooling units. Information regarding the lighting state of the plural light sources is inputted into the controlling unit, and the controlling unit controls a rotation rate of the fans of the cooling units with reference to the information.Type: ApplicationFiled: July 17, 2009Publication date: February 4, 2010Applicant: PANASONIC CORPORATIONInventors: Shu NAMBA, Naoko YAMASHITA, Daisuke YAEO
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Patent number: 7213944Abstract: A light source apparatus includes a lamp, an ellipsoidal mirror collecting a part of light radiated from a light transmission plane of the lamp, and a spherical mirror collecting another part of the light radiated from a light transmission plane not collected by the ellipsoidal mirror and reflecting it on the ellipsoidal mirror, in which a reflection plane of the ellipsoidal mirror and the reflection plane of the spherical mirror are in a form of non-rotation symmetry to an optical axis connecting a focal position F1 corresponding to a source of luminescence of the lamp to a focal position F2 of the light collected by the ellipsoidal mirror respectively. The distance between the reflection plane of the spherical mirror and the source of luminescence of the lamp is shorter than the distance between the source of luminescence and the focus of the light collected by the ellipsoidal mirror, and a part of the reflection plane of the ellipsoidal mirror is formed around the optical axis.Type: GrantFiled: April 15, 2004Date of Patent: May 8, 2007Inventors: Yusaku Shimaoka, Shu Namba, Kazunori Tanabe
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Publication number: 20060203497Abstract: A light source apparatus includes a lamp, an ellipsoidal mirror collecting a part of light radiated from a light transmission plane of the lamp, and a spherical mirror collecting another part of the light radiated from a light transmission plane not collected by the ellipsoidal mirror and reflecting it on the ellipsoidal mirror, in which a reflection plane of the ellipsoidal mirror and the reflection plane of the spherical mirror are in a form of non-rotation symmetry to an optical axis connecting a focal position F1 corresponding to a source of luminescence of the lamp to a focal position F2 of the light collected by the ellipsoidal mirror respectively. The distance between the reflection plane of the spherical mirror and the source of luminescence of the lamp is shorter than the distance between the source of luminescence and the focus of the light collected by the ellipsoidal mirror, and a part of the reflection plane of the ellipsoidal mirror is formed around the optical axis.Type: ApplicationFiled: April 15, 2004Publication date: September 14, 2006Inventors: Yusaku Shimaoka, Shu Namba, Kazunori Tanabe
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Patent number: 6698895Abstract: A white light beam from a light source portion (201) is separated into respective light beams of red, green and blue by a color separation optical system (204). The respective light beams are reflected by a rotating polygon mirror (207), travel via a second optical system (210) and form belt-like illuminated regions on an image display panel (212). By a rotation of the rotating polygon mirror (207), the illuminated regions of the respective light beams move continuously, and each pixel of the image display panel (212) is driven by a signal corresponding to a color of light entering this pixel. An image on the image display panel (212) is magnified and projected onto a screen by a projection optical system (216).Type: GrantFiled: January 28, 2003Date of Patent: March 2, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Atsushi Hatakeyama, Shigekazu Yamagishi, Shu Namba
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Publication number: 20030142277Abstract: A white light beam from a light source portion (201) is separated into respective light beams of red, green and blue by a color separation optical system (204). The respective light beams are reflected by a rotating polygon mirror (207), travel via a second optical system (210) and form belt-like illuminated regions on an image display panel (212). By a rotation of the rotating polygon mirror (207), the illuminated regions of the respective light beams move continuously, and each pixel of the image display panel (212) is driven by a signal corresponding to a color of light entering this pixel. An image on the image display panel (212) is magnified and projected onto a screen by a projection optical system (216).Type: ApplicationFiled: January 28, 2003Publication date: July 31, 2003Inventors: Atsushi Hatakeyama, Shigekazu Yamagishi, Shu Namba