CN1849707A - 具有反馈和无线控制的集成灯 - Google Patents

具有反馈和无线控制的集成灯 Download PDF

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CN1849707A
CN1849707A CNA200480025822XA CN200480025822A CN1849707A CN 1849707 A CN1849707 A CN 1849707A CN A200480025822X A CNA200480025822X A CN A200480025822XA CN 200480025822 A CN200480025822 A CN 200480025822A CN 1849707 A CN1849707 A CN 1849707A
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light
lamp part
parts
circuit
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CN100416828C (zh
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G·W·布鲁宁
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Signify Holding BV
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Koninklijke Philips Electronics NV
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • F21V23/0442—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors
    • F21V23/045—Arrangement of electric circuit elements in or on lighting devices the elements being switches activated by means of a sensor, e.g. motion or photodetectors the sensor receiving a signal from a remote controller
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/233—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/20—Controlling the colour of the light
    • H05B45/22—Controlling the colour of the light using optical feedback
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F21V23/004—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board
    • F21V23/006—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array arranged on a substrate, e.g. a printed circuit board the substrate being distinct from the light source holder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

一种灯部件(50)采用限定光反射区域(53)的反射器(52)和限定电路外壳区域(55)的散热装置(54)。LED部件(51)布置在光反射区域(53)内，并且散热装置(54)将热量从LED部件耗散出去。LED部件(51)中的一个或多个LED响应于通过LED的LED电流的流动而发光。LED部件(51)中的一个或更多个光功率传感器检测由LED进行的光的辐射。LED驱动器电路(30)布置在电路外壳区域(55)内，以控制通过LED的LED电流的流动作为由光功率传感器进行的光辐射的检测和与LED相关联的一个或更多个发光变量的理想等级的函数。

Description

具有反馈和无线控制的集成灯
技术领域
本发明涉及集成在灯罩(lamp housing)中的发光二极管(LED)和光功率传感器。更特别地，本发明涉及具有灯驱动器电路来提供灯的反馈和遥控的集成在灯罩中的LED和光功率传感器。
背景技术
大多数的人造光是通过灯中的气体放电而产生的。一种这样的灯是荧光灯。产生人造光的另一种方法包括使用LED，其以与流经LED的正向电流成比例的辐射通量的方式提供谱输出。另外，LED光源能用于生成多光谱光输出。
常规的LED光源利用单个封装的发光二极管或作为一个单元封装的具有基本上类似谱特性的发光二极管组。常规的LED光源实现为彩色校正的LED光源。彩色校正的LED光源是通过或直接或在密封剂内应用磷化合物层来制造的。该磷层吸收由LED发出的光或由LED发出的光的一部分，并基于所吸收的光和磷化合物的相互作用而发光。彩色校正的LED光源组合在一起，以形成LED光源。当对彩色校正的LED施加特定量的直流时，彩色校正的LED在谱输出中实现最大的精度。特定量的直流和其他数据一起包括在每一个彩色校正的LED的额定值中。
将灯中的多个彩色LED的输出进行组合是形成白色光源的一种替代方式。这样的组合提供产生多种彩色的选择。因为LED谱和效率随电流、温度和时间而改变，所以组合和保持来自多彩色LED的光的正确比例以产生既具有期望的彩色和强度又具有合理的空间一致性的光是一个困难的问题。另外，即使同一批制造的LED特性也各不相同。由于LED制造日渐改善，LED之间的变化可能变得更小，但是LED随温度、电流和时间的变化对于半导体设备上是重要的。在一些实施方式中，常规的控制系统通过增加或减少接收规定量的直流的LED的数量来调整谱输出的光亮度等级(level)。
希望具有一种带有反馈机构的集成灯，以确保期望的灯照度特性，其中照度传感器、LED和控制电路被集成在灯罩内，该灯罩可用于将一部分发出的光反射回到光传感器，以便系统反馈。还希望受控的照度特性包括发出的光亮度和彩色，其可以根据如从远程无线电频率源接收到的输入所指示的时间而变化。
发明内容
本发明的一种形式是包含反射器、散热装置、LED部件和LED驱动器电路的灯部件。反射器限定光反射区域。散热装置限定电路外壳(housing)区域。LED部件布置在光反射区域内并且与散热装置进行热传递，以便将热量从LED部件耗散出去。LED部件包括一个或更多个可用于响应于通过LED部件的LED电流的流动而发光的LED。LED部件也包括一个或多个可用于检测由LED进行的光辐射的光功率传感器。LED驱动器电路布置在电路外壳区域内，并且与LED部件电传递，以控制通过LED的LED电流的流动作为由光功率传感器进行的光辐射的检测的函数。
术语“热传递(thermal communication)”在此定义为物理的连接、物理耦合或任何其它的用于将热(量)从一个设备传递到另一个设备的技术。
术语“电通信(electrical communication)”在此定义为电连接、电耦合或任何其它的用于将一个设备的输出电施加到另一个设备的输入的技术。
本发明的前面所述的形式以及其它的形式、特征和优势通过下面的对当前优选的实施方式的详细说明、结合附图阅读时将变得更加显而易见。详细的说明和附图仅仅是本发明的举例说明而不是限制，本发明的范围由随附权利要求及其等价物来定义。
附图说明
图1表示依照本发明的LED系统的一种实施方式；
图2表示依照本发明的LED部件的一种实施方式；和
图3表示依照本发明的一种实施方式的灯部件的一种实施方式的横截面视图。
具体实施方式
在图1所示的发光二极管系统10采用LED部件20、LED驱动器部件30和遥控器40。LED部件20包括一个或更多个发光二极管(“LED”)21和一个或更多个光功率传感器(“OPSNR”)22，其中每个LED被单独地进行排列或排列在一个阵列中。LED驱动器部件30包括控制器(“CONT”)31、电源电路(“PWRC”)32、天线34、收发器(“TX/RX”)35、信号处理器(“SP”)36和差错检测器37。
光功率传感器22检测来自LED 21的光的任何辐射。在一种实施方式中，光功率传感器22是多个光传感器，其中每个光传感器响应于不同的特定范围的波长。在第二种实施方式中，光功率传感器22是按光传感器组排列的，其中每个光传感器组响应于不同的特定范围的波长。在第三种实施方式中，光功率传感器22是多个光传感器，其中每个光传感器响应于同一范围的波长。
光功率传感器22电传送表示来自LED 21的光辐射的检测的一个或多个检测信号SEN。在一种实施方式中，光功率传感器输出代表来自LED21的光辐射的检测的电流信号，并且运算放大器(未示出)将这些电流信号转换为电压信号，并且将这些电压信号电传递到信号处理器36。
实际上，LED部件20的结构组成取决于LED部件20的商业实施方式。图2表示采用在基底23上形成的或连接到基底23的LED21和光功率传感器22的发光二极管(LED)部件20的一种结构组成(图1)。在这个实施方式中，LED21由LED阵列的行组成，特别地，由红色的LED阵列LAR行、绿色的LED阵列LAG行、蓝色的LED阵列LAB行和淡黄色的LED阵列LAA行组成。光功率传感器22由放置在相邻的LED阵列之间的光传感器(“PS”)组成。
再次参考图1，信号处理器36确定了代表从LED21检测的光辐射的检测光值SLV，并且将检测到的光值SLV电传递到差错检测器37。在一种实施方式中，如所示出的，差错检测器37是加法器，并且信号处理器36将检测到的光值SLV电传递到加法器的负输入。在第二种实施方式中，差错检测器37是具有双输入的运算放大器，并且信号处理器36将检测到的光值SLV电传递到运算放大器的反相输入。
LED系统10的用户能够操作遥控器40，以发射控制信号CS1到天线34，其中控制信号CS1表示期望的来自LED21的光辐射。天线34将控制信号CS1电传递到收发器35，收发器35将控制信号CS1选择性地转换为表示期望的来自LED21的光辐射的理想发光值DLV，并且将理想发光值DLV电传递到差错检测器37。在一种实施方式中，差错检测器37是所示出的加法器，并且收发器35将理想光值DLV电传递到加法器的正输入。在第二种实施方式中，差错检测器37是具有双输入的运算放大器，并且收发器35将理想光值DLV电传递到运算放大器的非反相输入。
差错检测器37将理想光值DLV与检测到的光值SLV进行比较，并且将校正光值CLV电传递到控制器31，其中校正光值CLV表示理想光值DLV与检测到的光值SLV之间的差异。控制器31使用常规的电路来确定鉴于校正光值CLV是否需要LED21的输出功率电平的改变，并且将LED控制信号CS2传递到电源电路32，其中LED控制信号CS2表示在LED21的输出功率电平中需要进行的任何改变。电源电路32采用功率集成电路(“PWR IC”)33来常规地接收驱动在这里描述的电路所需的电功率PWR，并且基于由LED控制信号CS2表示的LED21的所要求的光功率电平将直流电流ILED提供给LED21。
另外，在本发明的一种实施方式中，LED系统10的用户能够操作遥控器40以发射控制信号CS3到天线34，其中控制信号CS3表示存储在控制器31中的软件程序，其中控制器31是可编程控制器。天线34将控制信号CS3电传递到收发器35，该收发器35将控制信号CS3选择地转换为表示存储在控制器中的期望的软件程序的控制信号CS4，并且将期望的软件程序电传递到控制器31进行存储。在执行存储的程序时，控制器31将控制信号CS5电传递到收发器35，其中控制信号CS5表示根据存储在存储器中的软件程序的期望的来自LED21的光辐射。收发器35将控制信号CS5选择地转换为理想光值DLV。在一种实施方式中，控制信号CS1优先于控制信号CS5，从而每当收发器35分别从天线34和控制器31接收到控制信号CS1和CS5的同时通信时，收发器35将控制信号CS1转换为理想光值DLV。在第二种实施方式中，控制信号CS5压倒控制信号CS1，从而每当收发器35分别从天线34和控制器31接收到控制信号CS1和CS5的同时通信时，收发器35将控制信号CS5转换为理想发光值DLV。
实际上，LED驱动器部件30的每个元件的结构配置取决于LED驱动器部件的商业实施方式。在一种实施方式中，依据以下内容构成LED驱动器部件30：(1)在2001年9月27日公布的并且题为“SupplyAssembly For A LED Lighting Module(用于LED发光模块的电源部件)”的公开号为US2001/0024112A1的美国专利申请，(2)在2003年5月8日公布的并且题为“Supply Assembly For A LED LightingModule(用于LED发光模块的电源部件)”的公开号为US2003/0085749A1的美国专利申请，(3)在2003年5月7日提交的并且题为“SingleDriver For Multiple Light Emitting Diodes(用于多个发光二极管的独个驱动器)”的序号为NO.60/468,538的美国专利申请，(4)在2002年12月19日提交的并且题为“Supply Assembly For A LEDLighting Module(用于LED发光模块的电源部件)”的序号为NO.10/323,445的美国专利申请，和/或(5)在2003年5月7日提交的并且题为“Current Control Method and Circuit for LightEmitting Diodes(用于发光二极管的电流控制方法和电路)”的序号为NO.60/468,553的美国专利申请，所有这些专利申请被引入在此作为参考并被转让给本申请的受让人。
图3表示实现LED系统10(图1)的灯部件50和遥控器41。灯部件50采用LED部件51(在图1中示出的LED部件20的一种实现方式)、具有限定光反射区域53的内表面的反射器52、具有限定电路外壳区域55的内表面的散热装置54、热导体56和57、安装板58、电源电路59(在图1中示出的电源电路32的一种实现方式)、电路板60和天线66(在图1中示出的天线34的一种实现方式)。LED部件51布置在光反射区域53内并且与散热装置54热传递，以便将热量从LED部件51中耗散出去。
安装板58、电源电路59和电路板60布置在电路外壳区域55内。安装板58通过热传导器56和57连接到散热装置54，其中热传导器56和57提供热传导路径，以便将热量从LED部件51提取到散热装置54。如图所示，安装板58支撑电源电路59和电路板60。电安装在电路板60上的是控制器61(在图1中示出的控制器30、信号处理器36和差错检测器37的一种实现方式)、收发器62(在图1中示出的收发器35的一种实现方式)和形式为电容器63、电阻器64和电感器65的电子元件。
遥控器41包括远程控制器40(图1)，这可以包括但不限于手持计算机、膝上型计算机、专用计算机或个人数字助理(PDA)，用于响应于来自用户(未示出)的输入而发射射频信号。所发射的射频信号将由天线66接收。用户可以输入各种与LED部件51发出的光辐射相关联的发光变量(lighting variable)，其包括但不限于光亮度等级、光彩色等级、色温等级和时间。用户可以输入程序，以修改这些不同参数中的一个或更多作为时间的函数。
在一种实施方式中，用户使用辅助键盘利用发光程序对遥控器41编程，以控制在一段时间内各种与LED部件51发出的光辐射相关联的发光变量。为了随时间改变光参数，该程序可以作为基于程序延时的信号发射给灯部件50。该程序可以在输入之后立即启动，该程序可以在预先编程的将来时间启动，或者该程序可以在预先编程的将来时间周期性地启动。
在第二种实施方式中，用户使用遥控器41上的辅助键盘利用多组软件代码来对遥控器41编程。每组软件代码将控制各种与至少一个LED阵列发出的光辐射相关联的发光变量中的至少一个，其中发光变量的改变将在特定的预先编程的时间上实施。多组软件代码中的一组可以由遥控器上的辅助键盘或触摸屏(未标注)上的按键序列来启动，用于立即、将来或周期性激活。
在第三种实施方式中，用户从遥控器41下载一组软件代码到控制器31，作为给收发器35的控制信号CS3，收发器35将控制信号CS3选择地转换为上文所述的控制信号CS4。下载的软件代码组可以在下载之后立即执行以控制来自灯部件50的光发射，该软件代码组可以在编程的将来时间执行，或者该软件代码组可以按照编程周期性地执行。
在第四种实施方式中，用户从遥控器41下载多组软件代码到控制器31。任何一个下载的软件代码组可以在下载之后立即执行以控制来自灯部件50的光发射，或者任何一个下载的软件代码组可以在编程的将来时间执行，或者任何一个下载的软件代码组可以按照编程周期性地执行。或者，任何一个下载的软件代码组可以利用遥控器上的辅助键盘或触摸屏(未标注)上的按键序列来启动，用于立即、将来或周期性激活。这样的辅助键盘或触摸屏上的按键序列将发射将在灯部件50上的天线66上接收的射频信号。
如前所述，天线66从遥控器41接收射频信号并且通过电缆(未示出)将该信号电传递到收发器62。在一种实施方式中，电缆通过光反射区域53从天线66延伸到电路板60。在第二种实施方式中，电缆沿着反射器52的外表面延伸并穿过散热装置54进入电路外壳区域55。
在光反射区域53内，反射器52包含光反射材料LRM，这种材料对于从LED部件51发出的光在光学上至少部分地是透明的。在一种实施方式中，包含在反射器52中的光反射材料LRM是一种硅树脂，例如，Nye two-part silicone(奈二部分硅树脂)(零件号OC-97228A-1和OC-97228B-1)。在空气与光反射材料LRM(未示出)的表面之间的界面将从LED部件51发出的一部分光朝向LED部件51后向反射。LED部件51的光功率传感器22(图2)检测在与光反射区域53的空气界面上反射的光功率。光功率传感器22通过轨迹线(trace line)和/或通过在安装板58和电路板60上或在安装板58和电路板60中与控制器61进行电通信。
在一种实施方式中，可以在光反射材料LRM中混合光散射颗粒，以混合由LED部件51上的LED发出的光并且将光反射回到LED部件51上的光功率传感器。
空气与光反射材料LRM的表面之间的界面可以定形为将或多或少反射的光功率引导到LED部件51。或者，空气与光反射材料LRM的表面之间的界面可以定形为适当地将反射回到LED部件51的不同彩色的LED的发射混合。这样的混合将允许反射的功率复制在灯部件50外部的点上不同彩色LED的发射的混合。或者，一种附加元件例如透镜、滤光器或漫射体可以连接到灯部件50的前表面，以影响从灯部件50发出的光的形状、方向或彩色。
驱动电路所需的电功率通过在常规的光插座中放置灯基座67来传送。从灯基座67到电源电路58和电路板60的电联接没有示出，但是本领域的技术人员能够想象到许多方式来提供电功率给电源电路59和电路板60。
实现LED系统10(图1)的灯部件50和遥控器41提供许多功能。受控制的变量包括控制彩色和亮度以及暗淡等级的定时信息。可以得到关于灯运行状态的信息，诸如LED21或LED部件51的运行状态之类。基于在遥控器40或控制器31中编程的周期性的灯部件50状态检查，这样的状态信息可以用于确定LED21或LED部件51中的任意一个是否不再运行并且需要修理。关于环境光等级的信息可以用于使灯调节输出等级，以便不浪费能量或者使其彩色适于维持优选的环境。
另外，为了安全及保密目的，灯可以具有在未授权的人进入房间并被传感器检测到时使用的警报模式，其能够直接或通过另一链接将闯入传送到灯。该灯随后可以被接通，以允许利用安装的摄像机获得清晰的视频图像。在房间中接通灯也可以恐吓入侵者，使其逃走。预先编制的“火警”模式也可以用于帮助消防队员在营救期间看得更清楚。烟雾中的白光通常阻碍能见度，因此该系统可以被编程为发射红光，以增强对房间的能见度。
所示的灯部件50的实施方式意思是表示一种结构，用于在灯部件50内提供光反射给光功率传感器，以用作远程控制的或编程的电路的操作中的反馈来控制LED，从而获得期望的光等级，而并非打算详尽论述所有可能性或者限制为了所述目的而能够制造的内容。因此，有许多其它可能的组合和实施方式。通过使用在这里示出和说明的，遥控器41与灯部件50通信，以获得至少一个理想的光等级参数。本领域的普通技术人员将因此意识到在许多的和各种各样的设备中采用灯部件50的实施方式的好处。
在前面的说明书中，已经参考了特殊的实施方式说明了本发明。然而，本领域的普通技术人员意识到：能够不脱离在下面的权利要求中阐述的本发明的范围而进行各种修改和改变。因此，说明书和附图将被认为是举例说明的而不是限制的意思，并且所有这样的修改都将包括在本发明的范围内。

Claims (9)

1、一种灯部件(50)，包括：
反射器(52)，限定光反射区域(53)；
散热装置(54)，限定电路外壳区域(55)；
LED部件(20)，布置在所述光反射区域(53)内并且与所述散热装置(54)热传递，以便将热量从所述LED部件(20)耗散出去，
所述LED部件(20)包括
至少一个LED(21)，可用于响应于通过所述至少一个LED(21)的LED电流(ILED)的流动而发光，和
至少一个光功率传感器(22)，可用于检测由所述至少一个LED(21)发出的光辐射；和
LED驱动器电路(30)，布置在所述电路外壳区域(55)内，所述LED驱动器电路与所述LED部件(20)进行电通信，以控制通过所述至少一个LED(21)的LED电流(ILED)的流动作为由所述至少一个光功率传感器(22)进行的光辐射的检测的函数。
2、权利要求1的灯部件(50)，其中所述LED驱动器电路(30)包括：
收发器(35)，可用于接收与所述至少一个LED(21)的光辐射相关联的至少一个发光变量的通信，
其中通过所述至少一个LED(21)的LED电流(ILED)的流动是由所述至少一个光功率传感器(22)进行的光辐射的检测和由所述收发器(37)进行的至少一个发光变量的通信的接收的函数。
3、权利要求2的灯部件(50)，还包括：
天线(36)，可用于将至少一个发光变量的通信发射到所述收发器(35)。
4、权利要求2的灯部件(50)，还包括：
控制器(31)，与所述收发器(35)进行电通信，以便将表示至少一个发光变量的LED控制信号(CS5)传送到所述收发器(35)。
5、权利要求2的灯部件(50)，其中所述LED驱动器电路(40)还包括：
差错检测器(37)，用于生成表示检测到的光值(SLV)与理想光值(DLV)之间的差异的校正光值(CLV)，检测到的光值(SLV)表示由所述至少一个光功率传感器(22)进行的光辐射的检测，理想光值(DLV)表示由所述收发器(35)进行的至少一个发光变量的通信的接收。
6、权利要求5的灯部件(50)，其中所述LED驱动器电路(30)还包括：
控制器(31)，与所述差错检测器(37)进行电通信，以接收校正光值(CLV)，所述控制器(31)可用于生成LED控制信号(CS2)作为校正光值(CLV)的函数。
7、权利要求6的灯部件(50)，其中所述LED驱动器电路(30)还包括：
电源电路(32)，与所述控制器(31)进行电通信，以接收LED控制信号(CS2)，所述电源电路(32)可用于引导通过所述至少一个LED(21)的LED电流(ILED)的流动作为LED控制信号(CS2)的函数。
8、权利要求1的灯部件(50)，其中所述至少一个LED(21)包括多个LED阵列(LEDR，LEDG，LEDB，LEDA)。
9、一种灯部件(50)，包括：
反射器(52)，限定光反射区域(53)；
散热装置(54)，限定电路外壳区域(55)；
LED部件(20)，布置在所述光反射区域(53)内并且与所述散热装置(54)热传递，以便将热量从所述LED部件(20)耗散出去，
所述LED部件(20)包括
LED装置(LEDR，LEDG，LEDB，LEDA)，用于响应于通过所述LED装置(LEDR，LEDG，LEDB，LEDA)的LED电流(ILED)的流动而发光，和
光传感器装置(PS)，用于检测由所述LED装置(LEDR，LEDG，LEDB，LEDA)进行的光辐射；和
LED驱动器电路(30)，布置在所述电路外壳区域(55)内，所述LED驱动器电路包括用于控制通过所述LED装置(LEDR，LEDG，LEDB，LEDA)的LED电流(ILED)的流动作为所述光传感器装置(PS)进行的光辐射的检测的函数的装置(31-37)。
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US20070007898A1 (en) 2007-01-11

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