CN1955774A - 发光二极管光源 - Google Patents

发光二极管光源 Download PDF

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CN1955774A
CN1955774A CNA2006101495384A CN200610149538A CN1955774A CN 1955774 A CN1955774 A CN 1955774A CN A2006101495384 A CNA2006101495384 A CN A2006101495384A CN 200610149538 A CN200610149538 A CN 200610149538A CN 1955774 A CN1955774 A CN 1955774A
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light
light guide
photoconductive tube
guide therefor
pcb
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CN1955774B (zh
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C·M·库谢恩
R·约翰逊
T·特斯诺
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Osram Sylvania Inc
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    • F21V29/50—Cooling arrangements
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    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
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    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
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    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
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    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
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Abstract

一种发光二极管光源(10)包括一具有主体(14)的散热器(12)，该主体带有前表面(16)和后表面(18)，后表面(18)设有散热片(20)。前表面(16)包括用于接收组件(24)的凹部(22)，该组件包括至少一个发光二极管(25)及其电路。壳体(26)具有凸缘(28)和以将组件(24)固定于散热器(12)内的方式装配于凹部(22)中的管状突起(30)；和具有至少一光导管(34)的光导件(32)，该光导件位于管状突起(30)中，至少一个光导管(34)中的每一个具有一光输入端(34a)，该光学输入端固定成以一对一方式聚光对准至少一个发光二极管(25)。

Description

发光二极管光源
技术领域
本发明总体上涉及光源，尤其涉及采用发光二极管(LED)的光源。更具体地，本发明涉及采用直接光学器件的LED光源。此外，本发明涉及具有车辆指示光的特定应用的LED光源。
背景技术
工业上，特别是汽车工业上的竞争压力，要求必需使光源尽可能的小并且经济。这可节省材料成本，并改善光学成像。相对于这些需求处于对立面的是，需要照明大视野范围，并且当进行车辆照明，在车辆表面上需要出现一个真实的可见图像以标志该车辆的存在。过去这些目的通过使用比较大的白炽灯和反射系统来实现。固态照明，例如发光二极管的出现，指明了通过大幅地减低光源尺寸而同时提高其寿命来改善这些系统的方向；然而，仍然有在宽阔区域散布光束形成照明以更好地照明车辆的需求。如果提供一个无需采用反射器的系统，将会成为该技术领域的进步。如果提供可采用替代性光源的光源系统将会成为该技术领域的又一进步。如果提供与在不同显示装置中定制的直接观察光学装置相结合的固态光源将会成为该技术领域的又一进步。
发明内容
因此，本发明的目的是要消除现有技术的缺陷。
本发明的另一目的是改进光源。
本发明的另一目的是改进车辆指示灯。
在本发明的一个方面中，借助一种发光二极管光源实现了这些目的，该发光二极管光源包括：一具有前表面和后表面的主体，所述前表面包括用于接收组件的凹部，所述组件包括至少一个发光二极管及其电路；一以将所述组件固定在所述主体内的方式装配在所述凹部中的壳体；以及一具有至少一个置于所述管状突起中的光导管的光导件，所述至少一个光导管中的每一个具有以一对一的关系以聚光对准所述至少一个发光二极管的方式固定的光输入端。
在本发明的另一个方面中，借助提供一种指示灯实现这些目的，该指示灯包括：一接收区域，该接收区域具有形成于主体中的第一表面和第二相对表面，并且具有形成于其中的基本上位于中心的光源接收孔；一相对于所述第一表面有效安装在所述接收区域中的光学器件，所述光学器件具有至少一个光输入窗口；以及一相对于所述第二表面安装的发光二极管光源，所述发光二极管光源包括具有至少一个光导管的光导件，所述光导管具有在操作上连接到所述至少一个光输入窗口的至少一个输出端。
本发明的光源小并且经济。其可被构造成便于装配在设计为标准S8灯座的位置，并与常规光学元件结合时，无需反射涂层。
附图说明
图1是可与本发明一实施例一起使用的壳体的分解透视图；
图2是本发明第一实施例的分解透视图；
图3是本发明替代实施例的分解透视图；
图4是图2中实施例的放大截面图；
图5是图3中实施例的放大截面图；
图6是可与本发明一实施例一起使用的光学器件的平面图；
图7是一已安装的本发明实施例的截面图；
图8是光导件-LED界面的放大图；
图9是光导件替代性实施例的截面图；以及
图10是光导件的一附加实施例的截面图。
具体实施方式
为了更好的理解本发明，以及本发明的其他和进一步的目的、优点、和性能，结合上述附图提供下述公开内容和所附权利要求。
现在详细参考附图，图1-3中示出了LED(发光二极管)光源的第一和第二实施例10(图2)和10a(图3)，其包括：具有带有前表面16和后表面18的主体14的散热器12，后表面18设有径向翅片状形式的散热片20。前表面16包括用于接收一组件24的凹部22，该组件包括至少一个LED25、25a及其(未示出的)电路。两个实施例共有的是，如图1所示具有凸缘28和管状突起30的壳体26。还可以设置一密封垫31，以便当已安装LED光源10时提供环境密封。凸缘28装配在凹部22内，以便以下述的方式将该组件24固定在散热器12。在图2和4的实施例中LED25优选的类型为Advanced PowerTOPLED(APT)。在图3和5的实施例中LED25a优选的类型为板上安装芯片，例如OSTAR。APT和OSTARLED均可从德国雷根斯堡OSRAM OPTOSemiconductors GmbH获得。
现在，参考图2中的特定实施例，一采用适合的透镜材料例如丙烯酸或聚碳酸酯制成的光导件32具有至少一个围绕芯体35的光导管34。在此处公开的所有优选实施例中，光导管和LED的数量是8个；然而，也可采用其他数量的LED以便支撑在形成有孔39的中央芯件35上，该孔39用于螺纹或类似连接。光导件32放置于管状突起30中，以使得至少一光导管34中的每一个以一对一关系对应于至少一个LED25中的一个LED以聚光对准的方式进行固定，每一个光导管具有一光输入端34a。该关系在图8中显示的最清楚。在光导管34和支撑件35a之间形成槽32a，以允许光导管34彼此相对且相对于中央芯件35挠曲以便适应于LED25组装的偏差。一突起58从光导件32底部延伸并且其中具有孔37a。
至少一个光导管34中的每一个具有与光学输入端34a相对的光学输出端36，其形成为便于将光引导至适当位置，例如引导至光学器件37。光学器件37部分图示于图4和5，并且更完整的图示于图6和7。
组件24还包括载有(未示出的)电路的印刷电路板(PCB)38以及一居中地放置于印刷电路板38上的调整垫圈40。印刷电路板38具有中心孔38a和多个位于其上的连接器42，以延伸超出电路板从而连接到电源上。该连接器42突伸穿过装配在散热器12内的隔间42b中的电绝缘垫圈42a。
为了组装LED光源10，电绝缘垫圈42a装配在散热器12内的隔间42b中，并且印刷电路板38放置于凹部22中，连接器42穿过绝缘垫圈42a并由此延伸以随后连接至电源。垫圈40放置于PCB上，并且光导件32借助凸起58安装于其上，凸起58延伸穿过调整垫圈40、孔38a并且进入形成在凹部22中心处的凹陷60。一螺钉62穿过凸起58中的孔插入并与凹陷60中有螺纹的部分相接合。控制螺钉62进入凹陷60的穿透量，并结合形成于管34之间的挠曲槽32a，以便确保输入窗口34a紧靠相应的LED电路小片，并且不损坏LED或光导件，由此确保最大量的光输入到光导件32中。
然后，通过将凸缘28安装于凹部22并且使管状突起30围绕光导件32来装配壳体26。可采用螺栓形式的紧固件66从散热器12底部插入并与形成在凸缘28下侧的螺纹部分68相接合，如在图4和5中最清楚可见。
现参考图3和图5，散热器12a包括在凹部22中的中心凸台44并且PCB 38a包括一围绕凸台44的中心孔46。一镀金属的印刷电路板48安装有至少一个LED25，并放置于凸台44上。在该实施例中，LED25a优选类型为板上安装芯片，例如前述OSTAR，因此光导件33无需挠曲槽并可为固体的，其由于不存在片组装而无需适应组装中出现的不同偏差。同样，可除去调整垫圈。
LED光源10理论上适合于用于指示灯50(图7)，其包含一具有第一表面52a和相对的形成于主体54上的第二表面52b的接收区域52，并且该接收区域52具有大致居中地设置的形成于其中的光源接收孔56。主体54可以是车辆的一部分，例如后尾部面板，并且指示灯50可为尾灯或刹车灯。
光学器件37的输入端相应于第一表面52a有效安装于接收区域52。光学器件37具有N个光学输入窗口37a，以与LED光源10的相应输出端口匹配。
LED光源10可更换地相对于第二表面52b安装，例如，通过旋转该单元以将形成在管状突起30上的凸缘70与形成有第二相对表面52b的适当的结合槽相接合。这种结构在汽车工业中是相当标准的。
在如图6和7所示的实施例中，光学器件37具有多个远离中心延伸的输出37b；然而，事实上可以提供任何构形，只要光学器件的输入窗口匹配于光导件的输出窗口。此外，如需要，腿部末端的任意一侧或两侧可设置适合的透镜以提高或改变光输出。
该系统的另外的优点是省去了反射表面，允许接收区域52具有与主体54相同的颜色，并且大大增加了设计选择。
使用任何包括LED(或其他光源)和光学器件的系统的关键是光源和光学器件的对准以使光输出的利用最大化。其中一种可实现的方式是通过调整螺钉和上述调整垫圈。图8中示出另一种方式，其中一LED电路小片100设有围绕LED的内部凸起102。这样的内部凸起可具有精确控制的高度，并通过使输入窗口34a和凸起102接触，从而允许光导管34的邻接光输入窗口34a相对于LED的精确定位。
参考图9，示出了一种替代性光导件33a，其中形成相对于输入窗口34a成一角度的输出窗口36b，从而由此发出的光聚焦于光导件上的点P。聚焦于点P的光可被引导入光学器件或透镜或任何其他适合的器件。
参考图10，可以提供具有成角度的输出窗口36b的类似的光导件32a，以聚焦发出的光于点P。
虽然已经示出和描述了本发明目前所认为的优选实施例，显然对于本领域技术人员来说，可以做出各种修改和变形而不偏离本发明由所附权利要求限定的范围。

Claims (17)

1、一种发光二极管光源，包括：
一具有前表面和后表面的主体，所述前表面包括用于接收组件的凹部，所述组件包括至少一个发光二极管及其电路；
一以将所述组件固定在所述主体内的方式装配在所述凹部中的壳体；以及
一具有至少一个置于所述管状突起中的光导管的光导件，所述至少一个光导管中的每一个具有以一对一的关系以聚光对准所述至少一个发光二极管的方式固定的光输入端。
2、如权利要求1所述的发光二极管光源，其特征在于，每一所述至少一个光导管具有相对于所述光输入端形成的以便将光引导至光学器件的光输出端。
3、如权利要求1所述的发光二极管光源，其特征在于，所述组件还包括载有所述电路的印刷电路板和居中心地放置在所述印刷电路板上的调整垫圈，以及多个置于所述印刷电路板上以延伸超出所述印刷电路板以便连接至电源的连接器。
4、如权利要求1所述的发光二极管光源，其特征在于，所述凹部包括中心凸台，所述印刷电路板包括围绕所述凸台的中心孔，并且安装有所述至少一个发光二极管的镀金属的印刷电路板位于所述凸台上。
5、一种指示灯，包括：
一接收区域，该接收区域具有形成于主体中的第一表面和第二相对表面，并且具有形成于其中的基本上位于中心的光源接收孔；
一相对于所述第一表面有效安装在所述接收区域中的光学器件，所述光学器件具有至少一个光输入窗口；以及
一相对于所述第二表面安装的发光二极管光源，所述发光二极管光源包括具有至少一个光导管的光导件，所述光导管具有在操作上连接到所述至少一个光输入窗口的至少一个输出端。
6、如权利要求5所述的指示灯，其特征在于，所述主体包括车辆的一部分，并且所述接收区域包括一凹陷。
7、如权利要求6所述的指示灯，其特征在于，所述主体具有基本上非反射的颜色，并且所述接收区域具有相同的非反射颜色。
8、一种光导件，包括：
一中央芯件；
多个光导管；
多个从所述中央芯件延伸的光导管支撑件，所述光导管支撑件中的每一个支撑一相应的光导管，每一个光导管由透光材料形成并具有光输入窗口、光输出窗口和从输入窗口延伸至输出窗口的内部反射壁。
9、如权利要求8所述的光导件，其特征在于，所述中央芯件包括安装孔。
10、如权利要求8所述的光导件，其特征在于，所述输入窗口基本上共面。
11、如权利要求8所述的光导件，其特征在于，所述输出窗口基本上共面。
12、如权利要求8所述的光导件，其特征在于，光导管中的至少之一是相对于一对应的光导管支撑件可挠曲地安装。
13、如权利要求8所述的光导件，其特征在于，所述光导管支持件中的至少一个相对于所述中央芯件可挠曲地安装。
14、如权利要求8所述的光导件，其特征在于，所述光导管均具有从输入窗口延伸至相应输出窗口的轴线，并且所述轴线是平行的。
15、如权利要求8所述的光导件，其特征在于，所述光导管均具有从所述输入窗口延伸至所述输出窗口的轴线，并且来自输出窗口的光会聚于点P。
16、如权利要求8所述的光导件，其特征在于，光导管相对于该芯件围绕公共轴径向布置。
17、如权利要求8所述的光导件，其特征在于，多个光导管、多个对应的光导件支撑件和芯件形成为一个整体。
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