Title:
LED LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2014197502
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide an LED lighting device capable of being substituted for a halogen light bulb by a simple configuration.SOLUTION: An LED lighting device comprises: a first light emitting part that has a first LED having a semiconductor light-emitting element with a light-emission peak wavelength at 360 nm or more and 480 nm or less, and a first lens arranged in a light emitting direction of the first LED and having an optical conversion member for converting the light emitted from the first LED into the red light to the orange light, and emits the predetermined red light to the orange light; a second light emitting part that has a second LED having a semiconductor light-emitting element with a light-emission peak wavelength at 360 nm or more and 480 nm or less, and a second lens arranged in a light emitting direction of the second LED, and emits the white light with a predetermined color temperature; and a current control part for controlling driving current supplied to the first light emitting part at a constant value for the period in which a driving signal is supplied from outside, while controlling driving current supplied to the second light emitting part by variable current in response to the driving signal.
Inventors:
ONAKA SHUJI
SHAMOTO TAKESHI
MAKINO KENJI
TAKEDA RITSU
SHAMOTO TAKESHI
MAKINO KENJI
TAKEDA RITSU
Application Number:
JP2013073119A
Publication Date:
October 16, 2014
Filing Date:
March 29, 2013
Export Citation:
Assignee:
MITSUBISHI CHEM CORP
International Classes:
H05B37/02; F21S2/00