CN101128912A - 带有光吸收涂层的灯 - Google Patents
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Abstract
本发明涉及一种管状灯,包含一个容纳光源(11a,11b,11c)的灯容器(10)。该灯容器的第一部分配备有反射由所述光源发射的辐射的涂层(13)。该灯容器的第二部分进一步配备有一层光吸收涂层(14),该光吸收涂层包含加入溶胶-凝胶基质中的颜料。
Description
技术领域
本发明涉及一种管状灯,其包含一个容纳光源的灯容器,其中,该灯容器的第一部分配备有反射由所述光源发射的辐射的涂层。
本发明还涉及一种管状灯容器,其包含配备有反射涂层的第一部分,并且本发明还涉及一种包含一个管状灯的照明器。
本发明特别涉及诸如汽车内部照明灯之类的汽车灯。
背景技术
美国专利4,710,677公开了一种管状灯,其包含一个容纳光源的灯容器,其中,该灯容器的第一部分配备有反射由所述光源发射的辐射的涂层。在这种灯中,灯容器的部分表面上涂覆一层合适的反射材料的涂层,从而最大化可用辐射量。当灯只是在一个方向上使用时,这避免了光损失。例如当将灯设置在汽车的车顶时,只有射向汽车内部的光才是有用的。如果没有反射镜,射向车顶的光就会被浪费。而且采用反射涂层避免了对外部反射镜的使用,这种反射镜体积较大并且装配复杂。
然而,当这种灯用于发射可见光时,所发射光的颜色取决于光源。常规光源(例如盘绕金属丝)发射的可见光在CIE 1931的白光区内。然而现在可能还需要其它颜色,例如在汽车内部提供蓝光以起刺激作用并防止司机睡着。
发明内容
本发明的一个目标是提供一种管状灯,其避免了光损失并且所发射光的颜色不同于光源所发射光的颜色。
为此,本发明提出一种管状灯,其包含一个容纳光源的灯容器,其中,该灯容器的第一部分配备有反射由所述光源发射的辐射的涂层,该灯容器的第二部分进一步配备有一层光吸收涂层,该光吸收涂层包含加入溶胶-凝胶基质(sol gel matrix)中的颜料。
除了旨在避免光损失的反射涂层以外,按照本发明的灯在一部分灯容器上包含含有颜料的光吸收涂层。这种光吸收涂层吸收由光源发射的特定波长的光,从而当所述光经过所述光吸收涂层时,其颜色被改变。通过恰当地选择颜料可以得到期望的颜色。
此外,申请人注意到,在包含一个在其一部分上配备有反射涂层的灯容器的管状灯中,未涂覆所述反射涂层的灯容器部分的温度相对较高。例如,在没有反射涂层的彩灯(festoon)中,灯容器温度达到200摄氏度,而在带有反射涂层的同一种灯中,未涂覆反射涂层的灯容器部分的温度超过300度。包含加入溶胶-凝胶基质中的颜料的光吸收涂层经受得起这样的温度。因此,按照本发明的灯在使用期间性能不会下降。
使第一部分不同于第二部分是有好处的。这意味着有光吸收涂层的地方不存在反射涂层。这避免了对光吸收涂层的不必要的使用。而且如果第一部分与第二部分未区分开来,并且如果反射涂层和光吸收涂层都位于灯容器的外表面,则一部分反射涂层就会沉积在光吸收涂层部分上,或者反之亦然。然而,在光吸收涂层上沉积反射涂层可能改变光吸收涂层,或者反之亦然。使第一部分与第二部分不同有利于克服该缺点。
优选地,第一部分基本上为灯容器的一半,而第二部分基本上也为灯容器的一半。这种灯提供了彩色的矩形光线,其非常适合于汽车应用,例如用于阅读地图或ID号码照明。
有利地,所述灯进一步包含至少一个端盖(end cap),所述端盖包含用于配合灯罩容纳所述灯的定向装置。这种定向装置使灯定位在灯罩内的合适位置。例如如果灯罩位于汽车的车顶,则将定向装置设计为灯只能被设置在灯罩内的给定位置,在该位置上,涂覆有反射涂层的灯容器部分面对所述车顶。
本发明还涉及一种管状灯容器,其包含配备有反射涂层的第一部分和配备有光吸收涂层的第二部分,该光吸收涂层包含加入溶胶-凝胶基质中的颜料。
本发明还涉及一种包含上述管状灯的照明器。
借助下述实施例,本发明的这些和其它方面将是显而易见的并且得到阐释。
附图简述
以下参照附图以举例方式描述本发明的实施例,其中:
图1a表示按照本发明的灯,而图1b为图1a所示灯的横截面;
图2a表示按照本发明一个有利实施例的灯,而图2b为图2a所示灯的横截面。
发明的详细描述
图1a和图1b示出了按照本发明的灯。图1b为图1a中的平面AA的横截面。这种灯是彩灯,当然本发明也可应用于其它类型的灯。该灯包含灯容器10、光源、第一端盖12a、第二端盖12b、反射涂层13和光吸收涂层14,其中该光源包括镀镍杜美丝(dumet)的第一直线段部分11a、盘绕金属丝11b和镀镍杜美丝的第二直线段部分11c。在图1a中,光吸收涂层是透明的,但是也可以是半透明的,因此当从外部看时光源是看不到的。
应当指出的是,为方便阐释起见,在图1b中突出显示了反射涂层13和光吸收涂层14的厚度。例如灯容器10的厚度为1毫米,反射涂层13和光吸收层14的厚度为几个微米。
灯容器10内填充有惰性气体,例如氦气、氖气、氩气、氪气、氡气或氙气。惰性气体抑制了钨的蒸发,并且提高了光源的工作温度。当灯工作时,在第一和第二端盖12a与12b之间提供电流,该电流加热光源,从而产生可见光。
如图1b所示,反射涂层13沉积在灯容器10的第一部分。灯容器10的第一部分优选的是灯容器10的一半,但是也可以小于或超出灯容器10的一半。然而灯容器10的第一部分不应是整个灯容器,因为在这种情况下没有光线可从灯发射出去。光吸收涂层14沉积在灯容器的第二部分。灯容器10的第二部分可是整个灯容器10,如图1b所示的那样。
在图1b的实例中,首先将光吸收涂层14沉积在灯容器10的外表面,然后将反射涂层13沉积在一部分光吸收涂层14上。然而光吸收涂层14和/或反射涂层13也可以沉积在灯容器10的内表面上。而且光吸收涂层14可沉积在反射涂层13上。
反射涂层13可以是任何类型,其反射由光源发射的可见光。例如可采用银或铝涂层,其可借助蒸汽沉积的方式沉积在灯容器10或光吸收涂层14上。当由光源发射的光到达反射涂层13时,其将被反射回与反射涂层13相对的方向(相对于光源而言)。如果灯所处的位置使得该方向为物体被照亮的方向,则反射涂层13避免了光损失。而且沿该方向发射的光通过光吸收涂层14,该涂层吸收所述光的某些波长,从而改变了从灯中出射的光的颜色。
光吸收涂层14包含加入溶胶-凝胶基质中的颜料。优选地,所述颜料为具有良好温度稳定性的无机颜料。所述颜料可以选自下列材料:氧化铁、掺杂磷的氧化铁、氧化锌铁、铝酸钴、氧化钕、钒酸铋、硅酸锆镨或者它们的混合物。氧化铁(Fe2O3)为橙色颜料,而掺杂磷的Fe2O3为橙红色颜料。氧化锌铁(例如ZnFe2O4或ZnO.ZnFe2O4)为黄色颜料。将(掺杂磷的)Fe2O3与ZnFe2O4混合将获得深橙色的颜料。铝酸钴(CoAl2O4)和氧化钕(Nd2O5)为蓝色颜料。钒酸铋(BiVO4)又称为钒铋矿,是一种黄绿色颜料。硅酸锆镨为黄色颜料。
在替换实施例中,可以采用有机颜料。特别合适的颜料有来自“Ciba”的所谓的红177(蒽醌)或邻苯二甲酸铬黄(2RLP)。其它合适的颜料有来自“Clariant”的红149(二萘嵌苯)、红122(喹吖酮)、红257(异吲哚啉酮镍)、紫罗兰19(喹吖酮)蓝15:1(酞菁铜)、绿7(酞菁铜盐)或黄83(dyaryl)。而且无机与有机颜料的混合物也是合适的,例如邻苯二甲酸铬黄与氧化(锌)铁的混合物。
溶胶-凝胶基质例如可以通过借助溶胶-凝胶工艺转换有机改性的硅烷而获得,所述有机改性的硅烷选自具有下列结构式的化合物组:RISi(ORII)3,其中RI包含一个烷基团或一个芳基团,而RII包含一个烷基团。例如,RI包含CH3或C6H5。这些物质具有较好的热稳定性。包含甲基或苯基团的基质可获得厚的光吸收涂层。甲基三乙氧基硅烷(MTMS)是用于溶胶-凝胶基质的适当起始材料的一个例子。实验表明,在溶胶-凝胶基质中加入甲基或苯基团的光吸收涂层在至少350℃的温度下是稳定的。
厚的光吸收涂层是优选的,例如厚度在1微米以上的光吸收涂层。实际上,这种涂层可以加入更多的颜料,从而提高涂层的颜色效果。
在按照本发明的灯中,良好的热稳定性是特别有益的。实际上,申请人已经注意到,在配备有反射涂层的管状灯中,未涂覆反射涂层的灯容器部分所达到的温度超过了未配备有反射涂层的灯容器部分。这是因为灯是管状的,并且反射涂层沉积在一部分灯容器上。由于管状灯的几何结构,较多的光通过未涂覆反射涂层的灯容器部分。然而申请人已经注意到,包含加入溶胶-凝胶基质中的颜料的光吸收涂层14在按照本发明的灯的工作期间性能没有下降。
借助于有机聚合物可以使颜料在溶胶-凝胶基质中处于稳定态,在以本申请人名义申请的专利申请WO01/20641中对此作了描述。替换地,可以采用氨基硅烷作为溶胶-凝胶基质中的颜料的稳定剂,在以本申请人名义申请的专利申请WO03/023816中对此作了描述。
溶胶-凝胶工艺对于本领域内技术人员来说是熟知的。专利申请WO01/20641和WO03/023816描述了制造光吸收涂层的实例,所述涂层包含加入溶胶-凝胶基质中的颜料。以下给出另一个制备适合于基本上发射蓝光的灯的光吸收涂层的实例。
利用二甲氨基丙基硅烷(dimethylaminopropylsilane)作为稳定剂使50/50%水/乙醇混合液中的氧化钕(Nd2O5)稳定。为此,通过将5克Nd2O5加入20克微酸化的50/50%水/乙醇混合液中制得氧化钕分散剂。随后加入0.1克的二甲氨基丙基硅烷,并且利用2毫米的锆研磨球(milling ball)来研磨该分散剂。另一方面单独制得溶胶-凝胶水解混合液。通过将15克四乙氧基硅烷(TEOS)、50克乙醇、3.6克水和1.1克的0.2M HCl混合并将所述混合液水解36小时而制得TEOS水解液。通过将Nd2O5分散剂与该水解混合液以1∶1比例混合并将20wt.%的甲氧基丙醇加入混合液而制备光吸收涂层液。该光吸收涂层随后被喷涂在灯容器的外表面。该光吸收涂层在250℃的温度下被固化10分钟。以这种方式,在玻璃灯容器上获得一层厚度为1.5微米的光吸收涂层,其中在干燥和固化期间未形成裂纹。
按照本发明一个有利实施例的灯示于图2a和2b。图2b为图2a中的平面BB的横截面。除了图1a和1b所示的采用相同标号的元件以外,图2a和2b的灯包含第一定向引脚20a和第二定向引脚20b。第一和第二定向引脚20a和20b为定向装置,其允许相对于灯罩来定向灯。所述定向装置旨在与灯罩的协同装置相配合,从而将第一和第二定向引脚20a和20b相对于灯罩置于预定的位置。由于反射涂层13相对于第一和第二定向引脚20a和20b的位置也是预定的,因此反射涂层13相对于灯罩的位置也是预定的。这简化了灯在灯罩内的定位,从而在定位所述灯的同时无需注意反射涂层的位置。而且,定向引脚20a和20b避免了灯例如因震动而在灯罩内旋转。因此反射涂层13的位置在灯罩内保持不变,这确保了灯在其整个使用寿命内都得到有效使用。
应当指出的是,定向装置可仅包含一个定向引脚。
此外,在图2a和2b的灯中,灯容器10的第二部分配备有光吸收涂层14,其与配备有反射涂层13的所述灯容器10的第一部分不同。灯容器10的第一和第二部分基本上各占灯容器10的一半。在这种情况下,获得了彩色的宽矩形光线,同时减少了由辐射源发射的光的损失。
如果需要较小的矩形光线,则第一部分占据灯容器10的多于一半的部分。虽然在这种情况下未涂覆反射涂层13的灯容器10的该部分所达到的温度较高,但是该部分可配备有包含加入溶胶-凝胶基质中的颜料的光吸收涂层,这是因为所述光吸收涂层可耐受这样的温度。
可以利用图1a或2a所述的灯制造照明器。这种照明器包含管状灯和适于容纳所述管状灯的灯罩。
在所附权利要求书中,任何附图标记不应被解释为对权利要求的限制。显而易见的是,“包含”一词及其变化形式并未将那些在权利要求中未提及的元件排除在外。元件之前的“一个”并未将存在多个这种元件的情形排除在外。
Claims (7)
1.一种管状灯,包含一个容纳光源(11a,11b,11c)的灯容器(10),其中,该灯容器的第一部分配备有反射由所述光源发射的辐射的涂层(13),该灯容器的第二部分进一步配备有一层光吸收涂层(14),该光吸收涂层包含加入溶胶-凝胶基质中的颜料。
2.如权利要求1所述的管状灯,其中,所述第一部分不同于所述第二部分。
3.如权利要求2所述的管状灯,其中,所述第一部分基本占为所述灯容器的一半,而所述第二部分基本上占所述灯容器的一半。
4.如权利要求1所述的管状灯,进一步包含至少一个端盖(12a),所述端盖包含用于配合灯罩容纳所述灯的定向装置(20a)。
5.如权利要求4所述的管状灯,其中,所述定向装置包含至少一个定向引脚(20a)。
6.一种管状灯容器,包含配备有反射涂层的第一部分和配备有光吸收涂层的第二部分,该光吸收涂层包含加入溶胶-凝胶基质中的颜料。
7.一种包含如权利要求1所述的管状灯的照明器。
Applications Claiming Priority (2)
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EP03300198 | 2003-11-06 | ||
EP03300198.3 | 2003-11-06 |
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CN101128912A true CN101128912A (zh) | 2008-02-20 |
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CNA2004800327361A Pending CN101128912A (zh) | 2003-11-06 | 2004-10-20 | 带有光吸收涂层的灯 |
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US (1) | US20080304275A1 (zh) |
EP (1) | EP1683185A2 (zh) |
JP (1) | JP2007525797A (zh) |
CN (1) | CN101128912A (zh) |
WO (1) | WO2005045883A2 (zh) |
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EP1922573A2 (en) * | 2005-08-22 | 2008-05-21 | Koninklijke Philips Electronics N.V. | Cured coating for use in optics or electronics. |
WO2008110970A1 (en) * | 2007-03-14 | 2008-09-18 | Koninklijke Philips Electronics N.V. | Tubular discharge lamp and method of preparing such a lamp |
JP7343839B2 (ja) * | 2020-01-07 | 2023-09-13 | ウシオ電機株式会社 | フィラメントランプ |
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Publication number | Priority date | Publication date | Assignee | Title |
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GB203471A (en) * | 1922-10-10 | 1923-09-13 | Lewis Garfield Williams | Improvements in lamp bulbs for vehicle headlights and the like |
GB233238A (en) * | 1924-10-18 | 1925-05-07 | Lewis Garfield Williams | Improvements in lamp bulbs for vehicle headlights and the like |
US2023558A (en) * | 1934-12-17 | 1935-12-10 | Allen P Tallman | Neon tube and method of making the same |
NL6809599A (zh) * | 1967-07-11 | 1969-01-14 | ||
DE8601283U1 (de) * | 1986-01-20 | 1986-08-28 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | Kraftfahrzeugentladungslampe |
US5798608A (en) * | 1995-09-07 | 1998-08-25 | Rockwell International | Avionics grade fluorescent lamp resistant to lumen depreciation |
US6342762B1 (en) * | 1997-07-03 | 2002-01-29 | Osram Sylvania Inc. | Amber vehicle lamp |
KR100703248B1 (ko) * | 1999-09-13 | 2007-04-03 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | 전기 램프 |
KR20050088384A (ko) * | 2002-12-17 | 2005-09-05 | 코닌클리즈케 필립스 일렉트로닉스 엔.브이. | 고압 방전 램프 |
-
2004
- 2004-10-20 EP EP04769725A patent/EP1683185A2/en not_active Withdrawn
- 2004-10-20 WO PCT/IB2004/003501 patent/WO2005045883A2/en not_active Application Discontinuation
- 2004-10-20 US US10/578,066 patent/US20080304275A1/en not_active Abandoned
- 2004-10-20 JP JP2006537464A patent/JP2007525797A/ja not_active Withdrawn
- 2004-10-20 CN CNA2004800327361A patent/CN101128912A/zh active Pending
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WO2005045883A3 (en) | 2007-08-16 |
US20080304275A1 (en) | 2008-12-11 |
EP1683185A2 (en) | 2006-07-26 |
WO2005045883A2 (en) | 2005-05-19 |
JP2007525797A (ja) | 2007-09-06 |
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