CN203249130U - 一种新型夜视兼容双模式平板灯 - Google Patents
一种新型夜视兼容双模式平板灯 Download PDFInfo
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- CN203249130U CN203249130U CN2012207276061U CN201220727606U CN203249130U CN 203249130 U CN203249130 U CN 203249130U CN 2012207276061 U CN2012207276061 U CN 2012207276061U CN 201220727606 U CN201220727606 U CN 201220727606U CN 203249130 U CN203249130 U CN 203249130U
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Abstract
Description
一种新型夜视兼容双模式平板灯
技术领域
[0001] 本实用新型涉及照明灯,特别属于作为飞机内部双模式环境照明的平板灯。
背景技术
[0002] 随着我国照明技术的飞速发展,人们对节能高效照明的需求日益提高。泛光灯是飞机舱内泛光照明的主要光源,该种泛光灯需有两种颜色的光源。在正常模式下为暖色的蓝白光光源为舱内提供辅助/应急照明,在夜视模式下为NVIS绿A的光源给舱内提供辅助/应急照明;该种泛光灯需有导光板将LED点光源转换为高均匀度的面光源。现有的泛光灯要么以白炽灯泡为光源,可靠性差、寿命短、高耗能,要么以LED点光源直下式方式,出光面不够均匀,而且两者都没有满足夜视兼容的功能,该种平板灯能否在舱内正常工作直接关系到飞行的安全。所以,急需对传统的以白炽灯泡或LED为光源和欠缺夜视兼容的灯的性能进行提升,使其满足应用于现代化战场的需求。
实用新型内容
[0003] 本实用新型要解决的技术问题是提供一种新型夜视兼容双模式平板灯,它能够满足平板灯不同模式下的相关光性能要求,能提高可靠性、光效、寿命、高均匀度,能经受振动、冲击环境条件。
[0004] 为解决上述技术问题,本实用新型是通过以下的技术方案实现的,一种新型夜视兼容双模式平板灯,包括壳体、弥散板、导光板、反射板、橡胶垫、盖板、光源部件,其特征在于:在壳体上有弥散板、导光板、反射板、橡胶垫、盖板依次叠放安装,导光板的一侧安装有光源部件。其特征在于:所述的光源部件包括光源板,在光源板上安装有两种交错排列的小功率LED光源。其特征在于:所述的两种交错排列的小功率LED各为蓝白光LED和夜视绿LEA。其特征在于:所述的夜视绿LED的表面有一降低辐亮度和矫正色差的涂料层。其特征在于:所述导光板的背面上有激光雕刻的网点。其特征在于:所述的壳体、盖板的表面涂有镀层和防腐层。其特征在于:在光源部件背面贴有导热绝缘垫片,导热绝缘垫片的另一面与壳体相贴。
[0005] 本实用新型由于改进了结构,增加了夜视兼容功能,采用小功率管LED光源替代了现有的白炽灯泡,还实现了高均匀度的面光源,与现有技术相比其有益效果是:1.不同LED间个数和排布保证了平板灯内部导光板的入光要求,用导光板实现了高均匀度的面光源;2.采用两种小功率管LED光源,保证了灯的高光效、高可靠性、低功耗、长寿命;3.在绿色LED上涂涂料保证了夜视绿模式下的夜视兼容要求,增加了不同模式间的选择。
附图说明
[0006] 以下将结合附图和实施例对本实用新型作进一步的说明。
[0007] 附图1为本实用新型的结构示意图。
[0008] 附图2为本实用新型的外形立体图。[0009] 附图3为本实用新型的LED平板泛光灯照明的光学原理示意图。
[0010] 附图4为本实用新型的电路示意图。
[0011] 图中:盖板1、橡胶垫2、反射板3、导光板4、光源部件5、弥散板6、壳体7,导热绝缘垫片8、小功率LED9、网点10。
具体实施方式
[0012]图中包括壳体、弥散板、导光板、反射板、橡胶垫、盖板、光源部件,其特征在于:在壳体上有弥散板、导光板、反射板、橡胶垫、盖板依次叠放安装,导光板的一侧安装有光源部件。其特征在于:所述的光源部件包括光源板,在光源板上安装有两种交错排列的小功率LED光源。其特征在于:所述的两种交错排列的小功率LED各为蓝白光LED和夜视绿LEA。其特征在于:所述的夜视绿LED的表面有一降低辐亮度和矫正色差的涂料层。其特征在于:所述导光板的背面上有激光雕刻的网点。其特征在于:所述的壳体、盖板的表面涂有镀层和防腐层。其特征在于:在光源部件背面贴有导热绝缘垫片,导热绝缘垫片的另一面与壳体相贴。
实施例
[0013] 如图1所示,是本实用新型的结构示意图。该平板泛光灯盖板1、壳体7的材料为硬铝并经导电化学氧化表面处理,表面涂有防腐涂层,外露表面还进行了喷环氧硝基磁漆处理以此增加耐环境性。橡胶垫2为硅橡胶制成,反射板3为具有高反射特性的PE材料。导光板4为以PMMA为基质在背面做网点从而形成高均匀度的面光源。光源部件5包括印制板和两种小功率LED,LED通过回流焊焊接在印制板上,光源部件背面还贴有导热绝缘垫片后直接贴在壳体上,LED所发热量传导至壳体通过自然对流进行散热。弥散板6通过PC材料制成起到均光的作用。通过壳体7上两个Φ 3.2的安装孔正面安装于飞机上,拆装简便实用。
[0014] 本实用新型通过用两种可单独控制的小功率LED作为光源实现双模式的平板泛光照明,两种光源交错排列焊接于印制板上,通过使用同一块导光板都能达到每种模式光照均匀性的要求。其中为了降低辐亮度和矫正色差还在绿色LED出光面上涂有含透明硅胶、色粉等特殊配比的涂料,满足了夜视兼容的要求。
[0015] 如图2所示,是本实用新型的光学原理示意图。通过用LED侧发光加导光板和弥散板(均光板)的方式实现高均匀度的面光源。LED点光源光线从导光板边端面进入导光板,当入射角大于临界角Qc= 42.155°将发生全反射,光线传导至远端。现在导光板背面制作有规律分布的网点破坏导光板的全反射,并在网点面紧贴具有高反射率的反射板将折射出导光板的光线反射回导光板内部,提高了利用率。网点使平板泛光灯形成了面光源,通过网点大小、形状和疏密的规律布置有效的提高了面光源的均匀度。再通过出光面的弥散板进一步起到均光作用提高产品的均匀度,整个光路系统可有效的实现高均匀度的面光源。
[0016] 如图3所示,是本实用新型的电路示意图。两种小功率LED分别为不同模式下提供光源,电阻其限流作用。每种LED都经过降额,电流约在额定的一半10mA,可有效的提高LED的寿命。每种模式下,两颗LED并联后再串联,当其中一颗LED损坏后,另外一颗任可在额定电流下正常工作,进一步提高了本实用新型的可靠性和寿命。[0017] 上述对本实用新型的描述不具有限制性,如果本领域的普通技术人员受其启示,在不脱离本实用新型权利要求的保护的情况下,作出本实用新型的其它光学、电路、结构等变形和实施方式,均属于本实用新型的保护范围。
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CN106793260A (zh) * | 2016-11-30 | 2017-05-31 | 中国直升机设计研究所 | 一种操作及控制集成的机内照明系统 |
CN107270213A (zh) * | 2017-05-05 | 2017-10-20 | 中国商用飞机有限责任公司 | 一种内饰集成式应急照明装置 |
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CN106793260A (zh) * | 2016-11-30 | 2017-05-31 | 中国直升机设计研究所 | 一种操作及控制集成的机内照明系统 |
CN107270213A (zh) * | 2017-05-05 | 2017-10-20 | 中国商用飞机有限责任公司 | 一种内饰集成式应急照明装置 |
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