Title:
LED LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2016207370
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an LED lighting device which has achieved both securing of illuminance on a main irradiation surface, and reduction in illuminance unevenness which can happen in the peripheral region of the main irradiation surface.SOLUTION: An LED lighting device includes: an LED substrate 1 on which a plurality of LED elements 10 whose power consumption is 0.7-1.5 W are arranged; a translucent cover 3 for covering the LED substrate 1 and for passing the light from the LED elements 10 while diffusing it; and a reflection member 4 which has a cylindrical shape having an inlet 40 and an outlet 41 for the light which has passed the translucent cover 3, and whose inner peripheral surface is set to a reflection surface 42. In the translucent cover 3, when viewed via the outlet 41 and the inlet 40 of the reflection member 4, the degree of diffusion of passing light in a peripheral region ARs is set to be higher than that in the central region ARc.SELECTED DRAWING: Figure 4
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Inventors:
MINETA MASAAKI
SAKAI KAZUSHI
KANO YASUKI
ICHIMARU YOKO
SAKAI KAZUSHI
KANO YASUKI
ICHIMARU YOKO
Application Number:
JP2015085749A
Publication Date:
December 08, 2016
Filing Date:
April 20, 2015
Export Citation:
Assignee:
IRIS OHYAMA INC
International Classes:
F21S8/02; F21V3/00; F21V3/02; F21V19/00
Domestic Patent References:
| JP2014013706A | 2014-01-23 | |||
| JP2012209057A | 2012-10-25 | |||
| JP2012243680A | 2012-12-10 |
Foreign References:
| WO2012144325A1 | 2012-10-26 |