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    • 2. 发明公开
    • WHITE LIGHT EMITTING LAMP, AND WHITE LIGHT LED LIGHTING DEVICE EQUIPPED WITH SAME
    • 智能照明灯泡 - LED照明灯
    • EP2549554A1
    • 2013-01-23
    • EP11756217.3
    • 2011-03-14
    • Kabushiki Kaisha ToshibaToshiba Materials Co., Ltd.
    • YAMAKAWA, MasahikoSHIRAKAWA, YasuhiroUSUI, Daichi
    • H01L33/50C09K11/08C09K11/59C09K11/64C09K11/66C09K11/76
    • C09K11/0883C09K11/663C09K11/675C09K11/7734C09K11/7739C09K11/7789H01L33/502H01L33/504H01L2224/48091H01L2224/73265H01L2224/8592H01L2924/181Y02B20/181H01L2924/00014H01L2924/00012
    • An object is to provide a white light emitting lamp 1 comprising: a semiconductor light emitting element 2 which is placed on a board 3 and emits ultraviolet light or blue light; and a light emitting portion that is formed so as to cover a light emitting surface of the semiconductor light emitting element 2, the light emitting portion containing a blue phosphor B, a green phosphor G, a red phosphor R and a deep red phosphor DR that are excited by the light emitted from the semiconductor light emitting element 2 to respectively emit blue light, green light, red light and a deep red light, the white light emitting lamp 1 emitting white light by mixing light emission colors from the blue phosphor B, the green phosphor G, the red phosphor R and a deep red phosphor DR with one another, wherein the deep red phosphor DR has a main emission peak in a longer wavelength region than a main emission peak of the red phosphor, the red phosphor R comprises at least one component selected from: a europium-activated SiAlON phosphor and a europium-activated CASN phosphor each having a predetermined composition, while the deep red phosphor DR comprises a manganese-activated magnesium florogermanate phosphor having a predetermined composition. According to the above white light emitting lamp, when the BGR phosphor is used in combination with the semiconductor element such as an LED or the like, and a deep red phosphor DR having a predetermined composition is further added in addition to the red phosphor R, so that luminance characteristics can be improved, whereby there can be provided a white light emitting lamp excellent in both high luminance and high color rendering properties.
    • 本发明的目的是提供一种白光发光灯1,其包括:半导体发光元件2,其被放置在基板3上并发射紫外线或蓝光; 以及形成为覆盖半导体发光元件2的发光面的发光部,发光部包含蓝色荧光体B,绿色荧光体G,红色荧光体R和深红色荧光体DR,其中, 被从半导体发光元件2发射的光分别激发,分别发出蓝光,绿光,红光和深红光,白光发光灯1通过混合来自蓝色荧光体B的发光颜色而发出白光, 绿色荧光体G,红色荧光体R和深红色荧光体DR,其中,深红色荧光体DR具有比红色荧光体的主发光峰长的波长区域的主发光峰,红色荧光体R包含 选自铕激活的SiAlON荧光体和铕活化的CASN荧光体中的至少一种成分,各自具有预定的组成,而深红色荧光体DR包含锰活化的磁体 具有预定组成的氟硅藻土荧光粉。 根据上述白色发光灯,当将BGR荧光体与诸如LED等的半导体元件组合使用时,除了红色荧光体R之外,还添加具有预定组成的深红色荧光体DR, 从而可以提高亮度特性,由此可以提供高亮度和高显色性优异的白光发光灯。