Title:
MANUFACTURING METHOD OF COVER FOR STRAIGHT TUBE TYPE LED LIGHTING DEVICE
Document Type and Number:
Japanese Patent JP2017045703
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a straight tube type LED lighting device that includes a cover capable of improving light extraction efficiency without reducing brightness of light with a specific wavelength, and that enables color matching and lighting control.SOLUTION: Reflection efficiency is enhanced by am aluminum frame 3 whose surface is finished into a mirror surface, diffusion light is emitted by a polycarbonate resin cylinder type outer shell 1 whose inner surface is engraved into a lenticular unevenness, and thereby loss of light flux due to total reflection is reduced. Further, the outer shell is immersed and applied with dispersion liquid of silica having an average grain diameter of 30 nm or less, and thereby transmissivity of light near a specific wavelength corresponding to spectral distribution of emission light from an LED module 5 is improved.SELECTED DRAWING: Figure 2
Inventors:
ABE REIZO
SATO MASASHI
MIYASHIRO TAKESHI
ISHIKAWA TAKASHI
SATO MASASHI
MIYASHIRO TAKESHI
ISHIKAWA TAKASHI
Application Number:
JP2015177036A
Publication Date:
March 02, 2017
Filing Date:
August 24, 2015
Export Citation:
Assignee:
BESPACK KK
International Classes:
F21S2/00; F21V3/00; F21V3/02; F21V3/04; G02B3/00; G02B3/06; G02B5/02
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