Patents by Inventor Shigeyasu Nakagawa

Shigeyasu Nakagawa 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).

  • Lamp cooling device and projection display apparatus
    Patent number: 7425793
    Abstract: Disclosed herein is a lamp cooling device for cooling a lamp including a light emission source for emitting light, a front transparent plate, a reflector for reflecting light emitted by the light emission source toward the front transparent plate, the light emission source being disposed in an intralamp space surrounded by the front transparent plate and the reflector, said lamp cooling device including: a duct having joint ports defined in respective opposite ends thereof and communicating with said intralamp space, said duct having a continuously extending portion between said opposite ends which is disposed in a space outside of said intralamp space, for circulating a gas through said duct and said intralamp space in isolated relation to the space outside of said intralamp space.
    Type: Grant
    Filed: March 21, 2006
    Date of Patent: September 16, 2008
    Assignee: Sony Corporation
    Inventors: Motohisa Haga, Kei Yamaoka, Kazuya Terasaki, Yukio Ito, Takuji Ohkubo, Hiroshi Hasegawa, Katsuhiro Yamashita, Masataka Oonishi, Dai Yoneya, Satoru Miwa, Shigeyasu Nakagawa
  • Lamp cooling device and projection display apparatus
    Publication number: 20060232973
    Abstract: Disclosed herein is a lamp cooling device for cooling a lamp including a light emission source for emitting light, a front transparent plate, a reflector for reflecting light emitted by the light emission source toward the front transparent plate, the light emission source being disposed in an intralamp space surrounded by the front transparent plate and the reflector, said lamp cooling device including: a duct having joint ports defined in respective opposite ends thereof and communicating with said intralamp space, said duct having a continuously extending portion between said opposite ends which is disposed in a space outside of said intralamp space, for circulating a gas through said duct and said intralamp space in isolated relation to the space outside of said intralamp space.
    Type: Application
    Filed: March 21, 2006
    Publication date: October 19, 2006
    Inventors: Motohisa Haga, Kei Yamaoka, Kazuya Terasaki, Yukio Ito, Takuji Ohkubo, Hiroshi Hasegawa, Katsuhiro Yamashita, Masataka Oonishi, Dai Yoneya, Satoru Miwa, Shigeyasu Nakagawa