Title:
LIGHTING DEVICE AND MANUFACTURING METHOD OF THE SAME
Document Type and Number:
Japanese Patent JP2015185219
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lighting device which achieves high light extraction efficiency and makes luminescent spots less visible, and to provide a manufacturing method of the lighting device.SOLUTION: A lighting device 1 according to the invention includes: a light source unit 10 having light emitting elements 11; and a cylindrical translucent member 20 where the light source unit 10 is disposed at the inner side. A region, in which diffusivity increases toward the light emitting elements 11, is formed in at least a part of a region of the cylindrical translucent member 20 to which light is radiated by the light emitting elements 11.
More Like This:
Inventors:
SAWADA JUNPEI
MASUDA AKIO
IWASE KEIGO
MASUDA AKIO
IWASE KEIGO
Application Number:
JP2014057827A
Publication Date:
October 22, 2015
Filing Date:
March 20, 2014
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP
MITSUBISHI ELECTRIC CORP
MITSUBISHI ELECTRIC CORP
International Classes:
F21S2/00; F21V3/00; F21V3/02
Domestic Patent References:
| JP2013077453A | 2013-04-25 | |||
| JP2013214391A | 2013-10-17 | |||
| JP2010176904A | 2010-08-12 | |||
| JP2010231938A | 2010-10-14 | |||
| JP2014022267A | 2014-02-03 | |||
| JP2012142406A | 2012-07-26 | |||
| JPS6171269U | 1986-05-15 | |||
| JPS63230055A | 1988-09-26 | |||
| JP2015170565A | 2015-09-28 |
Attorney, Agent or Firm:
Patent Business Corporation Kisa Patent Trademark Office