Semiconductor light emitting devices having selectable and/or adjustable color points and related methods
    2.
    发明授权
    Semiconductor light emitting devices having selectable and/or adjustable color points and related methods 有权
    具有可选择和/或可调色点的半导体发光器件和相关方法

    公开(公告)号:US09006986B2

    公开(公告)日:2015-04-14

    申请号:US14300293

    申请日:2014-06-10

    Applicant: Cree, Inc.

    Abstract: Semiconductor light emitting devices are provided that include a first string of light emitting diodes (“LED”) that emit unsaturated light having a color point that is within at least eight MacAdam ellipses of one or more points within a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit unsaturated light having color point that is within at least eight MacAdam ellipses from one or more points within a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit is provided that is configured to supply a first drive current to the first string of LEDs, a second drive current to the second string of LEDs and a third drive current to the third string of LEDs, wherein at least two of the first, second and third drive currents are independently controllable.

    Abstract translation: 提供半导体发光器件,其包括发射不饱和光的第一串发光二极管(“LED”),其具有位于第一蓝移黄色区域内的一个或多个点的至少八个MacAdam椭圆内的色点 在1931年CIE色度图上,发射不饱和光的第二串LED,其具有在1931 CIE色度图上的第二个蓝移绿色区域内的一个或多个点的至少八个MacAdam内的色点,并且 发射主波长在600和720nm之间的辐射的第三光源。 提供了一种驱动电路,其被配置为向第一串LED提供第一驱动电流,向第二串LED提供第二驱动电流,并向第三串LED提供第三驱动电流,其中,第一串中的至少两个 ,第二和第三驱动电流是独立可控的。

    LIGHTING FIXTURE WITH BRANCHING HEAT SINK AND THERMAL PATH SEPARATION
    3.
    发明申请
    LIGHTING FIXTURE WITH BRANCHING HEAT SINK AND THERMAL PATH SEPARATION 审中-公开
    带分流式散热器和热路分离器的灯具

    公开(公告)号:US20140268730A1

    公开(公告)日:2014-09-18

    申请号:US14145559

    申请日:2013-12-31

    Applicant: CREE, INC.

    Abstract: The present invention relates to different embodiments of lighting fixtures, such as high bay lighting fixtures, comprising improved features. One of these features can be a driver box placement that is displaced from the center of the fixture. In one such embodiment, the driver box can be mounted such that no portion is over the emitters. Another improved features is a heat sink with branching spokes. As they move away from the center of the heat sink, each of the spokes can branch into multiple spokes, which can improve conductive thermal dissipation. Empty spaces can be left between the spokes to improve convective thermal dissipation.

    Abstract translation: 本发明涉及照明器具的不同实施例,诸如高空间照明灯具,其包括改进的特征。 这些功能中的一个可以是从固定装置的中心偏移的驱动器盒放置。 在一个这样的实施例中,驱动器盒可以被安装成使得没有部分在发射器之上。 另一个改进的特征是具有分支辐条的散热器。 当它们离开散热器的中心时,每个辐条可以分支成多个辐条,这可以改善导电散热。 轮辐之间留有空的空间,以改善对流散热。

    Semiconductor Light Emitting Devices Having Selectable and/or Adjustable Color Points and Related Methods
    5.
    发明申请
    Semiconductor Light Emitting Devices Having Selectable and/or Adjustable Color Points and Related Methods 审中-公开
    具有可选择和/或可调色点的半导体发光器件及相关方法

    公开(公告)号:US20150002034A1

    公开(公告)日:2015-01-01

    申请号:US14300293

    申请日:2014-06-10

    Applicant: Cree, Inc.

    Abstract: Semiconductor light emitting devices are provided that include a first string of light emitting diodes (“LED”) that emit unsaturated light having a color point that is within at least eight MacAdam ellipses of one or more points within a first blue-shifted-yellow region on the 1931 CIE Chromaticity Diagram, a second string of LEDs that emit unsaturated light having color point that is within at least eight MacAdam ellipses from one or more points within a second blue-shifted-green region on the 1931 CIE Chromaticity Diagram, and a third light source that emits radiation having a dominant wavelength between 600 and 720 nm. A drive circuit is provided that is configured to supply a first drive current to the first string of LEDs, a second drive current to the second string of LEDs and a third drive current to the third string of LEDs, wherein at least two of the first, second and third drive currents are independently controllable.

    Abstract translation: 提供半导体发光器件,其包括发射不饱和光的第一串发光二极管(“LED”),其具有位于第一蓝移黄色区域内的一个或多个点的至少八个MacAdam椭圆内的色点 在1931年CIE色度图上,发射不饱和光的第二串LED,其具有在1931 CIE色度图上的第二个蓝移绿色区域内的一个或多个点的至少八个MacAdam内的色点,并且 发射主波长在600和720nm之间的辐射的第三光源。 提供了一种驱动电路,其被配置为向第一串LED提供第一驱动电流,向第二串LED提供第二驱动电流,并向第三串LED提供第三驱动电流,其中,第一串中的至少两个 ,第二和第三驱动电流是独立可控的。

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