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Patent Searching and Data


Title:
LED LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2013161573
Kind Code:
A
Abstract:

To form bright lines and spots on a light-emitting face of a light-emitting part of a light guide lens, and at the same time, change brightness of the bright lines without the need of changing brightness of an LED light source.

In an LED lighting device 100 with a reflecting part 3c for internally reflecting light from a light-incident part 3a of a light guide lens 3 to a light-emitting part 3b side arranged between them, as a light-emitting face 3b2 is seen from a viewing position VP opposed to the light-emitting face 3b2 of the light-emitting part 3b, a bright line BLa1 extended in a direction nearly vertical to a ridgeline 3b1a1 of a prism cut 3b1a is formed on the light-emitting face 3b2 by light from an LED light source 1a in a mode in which the light-emitting part 3a is set opposed to the LED light source 1a seen shining nearly point-like, and at the same time, a bright spot Paa1 is formed on the light-emitting face 3b2 by light irradiated from the LED light source 1a and reflected by a reflecting face 4a1 of a reflector 4, while, in a mode in which a reflecting face 3b1 of the light-emitting part 3b and the LED light source are made opposed to each other, a bright line BLa2 darker than the bright line BLa1 is formed on the light-emitting face 3b2.


Inventors:
ATAKA MIKA
Application Number:
JP2012020903A
Publication Date:
August 19, 2013
Filing Date:
February 02, 2012
Export Citation:
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Assignee:
STANLEY ELECTRIC CO LTD
International Classes:
F21S8/12; F21V13/12; F21V14/06; F21W101/10; F21Y101/02