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Patent Searching and Data


Title:
LED LIGHT BULB
Document Type and Number:
WIPO Patent Application WO/2018/021568
Kind Code:
A1
Abstract:
The invention provides, as an LED light bulb whereof the light-emission color can be modified by rotating a color disc, a simple-to-use LED light bulb having a simple structure. The LED light bulb comprises a main body, LEDs disposed in the main body, a globe supported by the main body so as to be rotatable and disposed in such a manner as to cover the LEDs, a disc disposed between the globe and the LEDs, and a position modification mechanism changing relatively the positional relationship between the LEDs and the disc concomitantly to a rotation of the globe. In this LED light bulb, the disc contains a first phosphor whereby light emitted from the LEDs is converted into a first light-emission color, and a second phosphor whereby the light emitted from the LEDs is converted into a second light-emitting color that is different from the first light-emitting color, such that a change in the positional relationship by the position modification mechanism causes a third light-emission color, which is emitted from the globe, to change.

Inventors:
SAKAI KEISUKE (JP)
AKIYAMA TAKASHI (JP)
Application Number:
PCT/JP2017/027563
Publication Date:
February 01, 2018
Filing Date:
July 28, 2017
Export Citation:
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Assignee:
CITIZEN WATCH CO LTD (JP)
CITIZEN ELECTRONICS (JP)
International Classes:
F21K9/64; F21K9/23; F21K9/65; F21K9/66; F21V17/00; F21Y115/10
Domestic Patent References:
WO2012017754A12012-02-09
Foreign References:
JP2014229608A2014-12-08
JP2007059260A2007-03-08
JP2014067555A2014-04-17
JP2013026416A2013-02-04
JP2014519689A2014-08-14
JP2014197673A2014-10-16
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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