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    • 4. 发明授权
    • Lightweight heat sinks and LED lamps employing same
    • 轻型散热器和采用相同的LED灯
    • US08672516B2
    • 2014-03-18
    • US12979573
    • 2010-12-28
    • Ashfaqul I. ChowdhuryGary R. Allen
    • Ashfaqul I. ChowdhuryGary R. Allen
    • F28F7/00H01L33/64
    • F21V7/22F21K9/232F21K9/64F21V3/062F21V3/12F21V29/506F21V29/773F21V29/87F21Y2115/10
    • A heat sink comprises a heat sink body, a reflective layer disposed over the heat sink body that has reflectivity greater than 90% for light in the visible spectrum, and a light transmissive protective layer disposed over the reflective layer that is light transmissive for light in the visible spectrum. The heat sink body may comprise a structural heat sink body and a thermally conductive layer disposed over the structural heat sink body where the thermally conductive layer has higher thermal conductivity than the structural heat sink body and the reflective layer is disposed over the thermally conductive layer. A light emitting diode (LED)-based lamp comprises the aforesaid heat sink and an LED module secured with and in thermal communication with the heat sink. The LED-based lamp may have an A-line bulb configuration, or may comprise a directional lamp in which the heat sink defines a hollow light-collecting reflector.
    • 散热器包括散热体,设置在散热体上方的反射层,其对可见光谱中的光具有大于90%的反射率;以及透光保护层,设置在反射层上,该透光保护层对于光的透光性 可见光谱。 散热体可以包括结构散热体和布置在结构散热体上的导热层,其中导热层具有比结构散热体更高的热导率,并且反射层设置在导热层之上。 基于发光二极管(LED)的灯包括上述散热器和与散热器固定并与散热器热连通的LED模块。 基于LED的灯可以具有A线灯泡构造,或者可以包括定向灯,其中散热器限定中空聚光反射器。
    • 7. 发明授权
    • Lightweight heat sinks and LED lamps employing same
    • 轻型散热器和采用相同的LED灯
    • US08668356B2
    • 2014-03-11
    • US12979529
    • 2010-12-28
    • Ashfaqul I. ChowdhuryGary R. AllenJoshua I. Rintamaki
    • Ashfaqul I. ChowdhuryGary R. AllenJoshua I. Rintamaki
    • F21V21/00F21V29/00
    • F21V3/00B82Y30/00F21K9/232F21K9/233F21V7/041F21V29/505F21V29/773F21V29/87F21Y2115/10
    • A heat sink includes a thermally conductive layer comprising at least one of fullerenes and nanotubes disposed in a polymeric host. The thermally conductive layer may be disposed on a heat sink body, which may be thermally insulating and/or plastic, and may include surface area enhancing heat radiating structures, such as fins, with the thermally conductive layer being disposed over at least the surface area enhancing heat radiating structures. A light emitting diode (LED)-based lamp embodiment includes the heat sink and an LED module including one or more LED devices secured with and in thermal communication with the heat sink. A method embodiment includes forming the heat sink body and disposing the thermally conductive layer on the heat sink body. The disposing may comprise spray coating. An external energy field may be applied during spray coating to impart a non-random orientation to nanotubes in the polymeric host.
    • 散热器包括导热层,其包含设置在聚合物主体中的富勒烯和纳米管中的至少一种。 导热层可以设置在可以是隔热和/或塑性的散热体上,并且可以包括表面积增强的散热结构,例如翅片,导热层至少设置在表面积 增强散热结构。 基于发光二极管(LED)的灯实施例包括散热器和LED模块,LED模块包括固定在散热片上并与散热器热连通的一个或多个LED器件。 方法实施例包括形成散热体并将导热层设置在散热体上。 处理可以包括喷涂。 可以在喷涂期间施加外部能量场以赋予聚合物主体中的纳米管的非随机取向。
    • 8. 发明申请
    • LIGHTWEIGHT HEAT SINKS AND LED LAMPS EMPLOYING SAME
    • 轻型散热器和使用相同的LED灯
    • US20120080699A1
    • 2012-04-05
    • US12979573
    • 2010-12-28
    • Ashfaqul I. ChowdhuryGary R. Allen
    • Ashfaqul I. ChowdhuryGary R. Allen
    • H01L33/64F28F7/00
    • F21V7/22F21K9/232F21K9/64F21V3/062F21V3/12F21V29/506F21V29/773F21V29/87F21Y2115/10
    • A heat sink comprises a heat sink body, a reflective layer disposed over the heat sink body that has reflectivity greater than 90% for light in the visible spectrum, and a light transmissive protective layer disposed over the reflective layer that is light transmissive for light in the visible spectrum. The heat sink body may comprise a structural heat sink body and a thermally conductive layer disposed over the structural heat sink body where the thermally conductive layer has higher thermal conductivity than the structural heat sink body and the reflective layer is disposed over the thermally conductive layer. A light emitting diode (LED)-based lamp comprises the aforesaid heat sink and an LED module secured with and in thermal communication with the heat sink. The LED-based lamp may have an A-line bulb configuration, or may comprise a directional lamp in which the heat sink defines a hollow light-collecting reflector.
    • 散热器包括散热体,设置在散热体上方的反射层,其对可见光谱中的光具有大于90%的反射率;以及透光保护层,设置在反射层上,该透光保护层对于光的透光性 可见光谱。 散热体可以包括结构散热体和布置在结构散热体上的导热层,其中导热层具有比结构散热体更高的热导率,并且反射层设置在导热层之上。 基于发光二极管(LED)的灯包括上述散热器和与散热器固定并与散热器热连通的LED模块。 基于LED的灯可以具有A线灯泡构造,或者可以包括定向灯,其中散热器限定中空聚光反射器。
    • 9. 发明授权
    • Optimized ultraviolet reflecting multi-layer coating for energy efficient lamps
    • 用于节能灯的紫外线反射多层涂层的优化
    • US07352118B2
    • 2008-04-01
    • US10732885
    • 2003-12-10
    • Ashfaqul I. ChowdhuryRajasingh IsraelGary R. Allen
    • Ashfaqul I. ChowdhuryRajasingh IsraelGary R. Allen
    • H01J61/35H01J5/16
    • H01J61/35
    • A metal halide lamp (10) includes a light-transmissive envelope (12) which encloses a metal halide pool (30) for generating a discharge when spaced apart electrodes (20, 22) within the envelope are supplied with an electric current. A multi-layer coating (40) is deposited on a surface (42) of the envelope. The coating includes several layers of at least two materials of different refractive index, which, in combination, reflect radiation in the UV region of the electromagnetic spectrum. Rather than optimizing the coating for a normal (i.e., 0°) angle of incidence on the coating, the multi-layer coating is optimized at an angle which is selected to be within 10° of the mean angle (α) of incidence of the UV radiation on the arctube surface, thereby increasing the amount of UV radiation which is returned to the metal halide pool. The coating is preferably optimized for high reflectivity in the UV-region of the spectrum and high transmission in the visible region of the spectrum to maximize useful light output while reflecting UV light back to the metal halide pool for improved heating of the pool.
    • 金属卤化物灯(10)包括透光外壳(12),其包围金属卤化物池(30),用于在外壳内的间隔开的电极(20,22)提供电流时产生放电。 多层涂层(40)沉积在外壳的表面(42)上。 涂层包括几层不同折射率的至少两种材料,它们组合地反射了电磁光谱的UV区域中的辐射。 不是将涂层优化到涂层上的正常(即0°)入射角,而是将多层涂层以选定的角度(α)为10°以内的角度进行优化 在辐射管表面上的UV辐射,从而增加返回到金属卤化物池的紫外线辐射量。 该涂层优选针对光谱的UV区域中的高反射率和在光谱的可见光区域中的高透射率进行优化,以使有用的光输出最大化,同时将UV光反射回金属卤化物池,以改善池的加热。