WARM WHITE LIGHT EMITTING DEVICE FOR LIGHTING APPLICATIONS

摘要

A white light emitting device for illumination is provided to improve the brightness and color reproducibility by using an improved fluorescent coating structure composed of a transparent resin, a yellow light fluorescent body and a red light fluorescent body. A white light emitting device for illumination comprises a blue semiconductor light emitting element(3) and a fluorescent coating structure on the blue semiconductor light emitting element, The fluorescent coating structure is composed of a transparent resin, a yellow light fluorescent body(6) and a red light fluorescent body(7). The yellow light fluorescent body is one selected from a group consisting of a yttrium aluminum based yellow fluorescent body of a first chemical formula, a first strontium based yellow fluorescent body of a second chemical formula, and a second strontium based yellow fluorescent body of a third chemical formula.