Patents by Inventor Hiroto Tokunaga

Hiroto Tokunaga 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).

  • Patent number: 8618443
    Abstract: A conventional vehicle lighting device has entailed a problem on swaging and fixing a power-feeding portion and a connector to each other insofar. In the present invention, a connector is made up of: a male terminal set at a power-feeding electrically conductive paste on one face of a power-feeding film of a power-feeding portion; a grommeted terminal board (primary swaging tool) on which the terminal and the power-feeding portion have been swaged; and a resin board (secondary swaging tool) on which the male terminal, the power-feeding portion, and the grommeted terminal board have been swaged. As a result, in the present invention, a swaging fixing strength between the power-feeding portion and the connector can be improved by means of the primary swaging fixing of the grommeted terminal board and the secondary swaging fixing of the resin board.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: December 31, 2013
    Assignee: Ichikoh Industries, Ltd.
    Inventors: Kotoka Inoue, Katsuhiro Murahashi, Hiroto Tokunaga
  • Patent number: 8277100
    Abstract: A vehicle lighting device includes: a heat sink member; a semiconductor-type light source directly placed on a top face of the heat sink member; a power-feeding holder which is set on the semiconductor-type light source and the heat sink member, for holding the semiconductor-type light source at the side of the heat sink member and feeding a power current to the semiconductor-type light source; and a fixing member which is covered on the power-feeding holder and fixed to the heat sink member, for fixing the power-feeding holder to the heat sink member and sandwiching and fixing the semiconductor-type light source between the power-feeding holder and the heat sink member. As a result, this vehicle light device improves workability of assembling components.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: October 2, 2012
    Assignee: Ichikoh Industries, Ltd.
    Inventor: Hiroto Tokunaga
  • Patent number: 8217306
    Abstract: A conventional vehicle lighting device entails a problem on appearance. A vehicle lighting device of the present invention is provided with a wire heater, an extension portion, and a power-feeding portion. An adhesive part is provided at a part of one face of an extension film of the extension portion. Of such one face of the extension film of the extension portion, a letterpress printed-film pattern of a rough portion is provided in a range excluding the adhesive part. As a result, the vehicle lighting device of the present invention provides an ability to reliably prevent an extension film of the extension portion from sticking to a lamp lens by means of the letterpress printed-film pattern of the rough portion; prevent an appearance failure or abnormality exerted by the sticking of the extension film of the extension portion to the lamp lens; and improve its appearance.
    Type: Grant
    Filed: July 10, 2009
    Date of Patent: July 10, 2012
    Assignee: Ichikoh Industries, Ltd.
    Inventors: Kotoka Inoue, Katsuhiro Murahashi, Hiroto Tokunaga
  • Publication number: 20100067251
    Abstract: A vehicle lighting device includes: a heat sink member; a semiconductor-type light source directly placed on a top face of the heat sink member; a power-feeding holder which is set on the semiconductor-type light source and the heat sink member, for holding the semiconductor-type light source at the side of the heat sink member and feeding a power current to the semiconductor-type light source; and a fixing member which is covered on the power-feeding holder and fixed to the heat sink member, for fixing the power-feeding holder to the heat sink member and sandwiching and fixing the semiconductor-type light source between the power-feeding holder and the heat sink member. As a result, this vehicle light device improves workability of assembling components.
    Type: Application
    Filed: September 10, 2009
    Publication date: March 18, 2010
    Inventor: Hiroto TOKUNAGA
  • Publication number: 20100006554
    Abstract: A conventional vehicle lighting device has entailed a problem on swaging and fixing a power-feeding portion and a connector to each other insofar. In the present invention, a connector is made up of: a male terminal set at a power-feeding electrically conductive paste on one face of a power-feeding film of a power-feeding portion; a grommeted terminal board (primary swaging tool) on which the terminal and the power-feeding portion have been swaged; and a resin board (secondary swaging tool) on which the male terminal, the power-feeding portion, and the grommeted terminal board have been swaged. As a result, in the present invention, a swaging fixing strength between the power-feeding portion and the connector can be improved by means of the primary swaging fixing of the grommeted terminal board and the secondary swaging fixing of the resin board.
    Type: Application
    Filed: July 10, 2009
    Publication date: January 14, 2010
    Inventors: Kotoka Inoue, Katsuhiro Murahashi, Hiroto Tokunaga
  • Publication number: 20100008099
    Abstract: A conventional vehicle lighting device entails a problem on appearance. A vehicle lighting device of the present invention is provided with a wire heater, an extension portion, and a power-feeding portion. An adhesive part is provided at a part of one face of an extension film of the extension portion. Of such one face of the extension film of the extension portion, a letterpress printed-film pattern of a rough portion is provided in a range excluding the adhesive part. As a result, the vehicle lighting device of the present invention provides an ability to reliably prevent an extension film of the extension portion from sticking to a lamp lens by means of the letterpress printed-film pattern of the rough portion; prevent an appearance failure or abnormality exerted by the sticking of the extension film of the extension portion to the lamp lens; and improve its appearance.
    Type: Application
    Filed: July 10, 2009
    Publication date: January 14, 2010
    Inventors: Kotoka INOUE, Katsuhiro MURAHASHI, Hiroto TOKUNAGA
  • Publication number: 20080144320
    Abstract: A holder in which a light emitting diode is set in an opening is fixed on a heat sink so that power feeding units of the light emitting diode are pushed toward the heat sink by metal wiring bodies. Therefore, the light emitting diode and the heat sink can be brought into close contact with each other and heat dissipation performance of the heat sink can be improved.
    Type: Application
    Filed: December 12, 2007
    Publication date: June 19, 2008
    Inventor: Hiroto Tokunaga
  • Publication number: 20070181565
    Abstract: An arrangement for a vehicle, such as the head lamp, includes a part that needs a snow-melting structure, a line heater that is transferred to and mounted on the part, and a power-supplying unit that supplies electric current to the line heater. The line heater includes a base film, an adhesive layer, a line-patterned conductive member, and a resist layer. The adhesive layer is adhered to the part and thereby the line-patterned conductive member is transferred to the part.
    Type: Application
    Filed: January 9, 2007
    Publication date: August 9, 2007
    Inventors: Katsuhiro Murahashi, Kotoka Inoue, Hiroto Tokunaga, Noriyuki Mukai