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Title:
ELECTRIC LIGHT INDICATION NEEDLE AND LIGHT GUIDE
Document Type and Number:
WIPO Patent Application WO/2006/115100
Kind Code:
A1
Abstract:
An inexpensive electric light indication needle which can be controlled to vary in length while eliminating unevenness in luminance, and its light guide. The electric light indication needle comprises a light guide having a plurality of incident faces, a plurality of reflective faces provided in association with respective incident faces and reflecting light entering from each incident face, and a plurality of exit faces provided in association with respective reflective faces so that light reflected off each reflective face exits, and a plurality of light emitting diodes provided oppositely to respective incident faces.

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Inventors:
NAKANO KOJI (JP)
NOJIRI HITOSHI (JP)
WAKAKI RYOSUKE (JP)
Application Number:
PCT/JP2006/308061
Publication Date:
November 02, 2006
Filing Date:
April 17, 2006
Export Citation:
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Assignee:
NICHIA CORP (JP)
NAKANO KOJI (JP)
NOJIRI HITOSHI (JP)
WAKAKI RYOSUKE (JP)
International Classes:
G01D13/28; B60K35/00; G01D11/28; G09F13/18
Domestic Patent References:
WO2002093535A12002-11-21
Foreign References:
JPS5550638Y21980-11-26
JP2000213964A2000-08-04
JPS5813693Y21983-03-17
JPH07151567A1995-06-16
JPH10332438A1998-12-18
Other References:
See also references of EP 1876426A4
Attorney, Agent or Firm:
Kawamiya, Osamu (IMP Building 3-7, Shiromi 1-chome, Chuo-k, Osaka-shi Osaka, JP)
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