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CN116133888A - 机动车中的遮蔽装置 - Google Patents

机动车中的遮蔽装置 Download PDF

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CN116133888A
CN116133888A CN202180059663.9A CN202180059663A CN116133888A CN 116133888 A CN116133888 A CN 116133888A CN 202180059663 A CN202180059663 A CN 202180059663A CN 116133888 A CN116133888 A CN 116133888A
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display
brightness
secondary drive
driver
drive display
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B·布格尔
S·克拉珀
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Mercedes Benz Group AG
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Mercedes Benz Group AG
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    • 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
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Abstract

本发明涉及一种机动车内的遮蔽装置，其包括带有可切换的防窥视机构的副驾显示器，该防窥视机构在预定的工作状态下被切换至起效，从而无法从司机座椅区域看到在该副驾显示器上所显示的显示内容。根据本发明，该遮蔽装置包括对准该副驾显示器的、被控制单元控制的发光机构，该发光机构从外部照亮该副驾显示器以阻止在该防窥视机构被切换至遮蔽的情况下还是从司机座椅位置能看到的动态的剩余片段。

Description

机动车中的遮蔽装置
技术领域
本发明涉及一种用于机动车内的副驾显示器的遮蔽装置，其设计成可切换的，用以遮蔽侧向看向副驾显示器的视线。
背景技术
DE 101 26 186A1(即D1)公开一种布置在车顶中的照明装置，其对准反光性显示器。作为背景照明的替代方案，液晶显示器使用通过反光镜所反射的日光或照明装置的光被照亮。
DE 10 2019 113 024 A1公开一种机动车内室用投影装置，其包括用于产生光线的光源和用于将光线偏转至机动车内室中的构件的表面的偏转机构。
在车辆行驶期间不应向车辆司机显示动画或动态图像例如电影。这导致例如当副驾侧乘客看电影时对于司机来说需要遮蔽内容。US 2013/0162924 A1公开一种可切换的私用过滤器，借此按照至少两个模式来显示信息。在第一模式中视角受限，因此只允许从正常近侧取向看向过滤器。在第二模式中视角增大，因此也可以从较大的倾斜角度看到该信息。
上述的遮蔽装置的缺点是，在司机看向屏幕时，尽管遮蔽装置起效，但因视角不同而仍能看到剩余片段。
发明内容
与之相比，本发明的任务是提供一种装置和一种方法，借此能进一步将司机分心减至最低程度。
本发明来自独立权利要求的特征。有利的改进方案和设计是从属权利要求的主题。
本发明的第一方面涉及一种遮蔽装置，其包括对准副驾显示器的且被控制单元控制的发光机构，发光机构从显示器外部照亮副驾显示器，用以阻止在防窥视机构切换至遮蔽的情况下从司机座椅位置还能看到的动态的剩余片段。副驾显示器可以有目的地以外部光被照亮，屏幕亮度与环境亮度之间的对比度比由此可受到影响。换言之，尤其在黑暗中，因为有外部光，被照亮的副驾显示器相对于环境的对比度降低，屏幕上的图像让人感到不太亮，由此所谓的剩余片段无法再让司机看到。防窥视机构例如被设计成可切换的、安置在副驾显示器的玻璃板下方的防窥视膜。副驾显示器例如作为具有背光的LCD显示器布置。在一个特殊实施方式中，为了补偿亮度波动而采用双背光，一个背光按正常方式、即按公用模式发光，另一个背光按遮蔽方式、即按私人模式发光。根据本发明，控制单元依据副驾显示器的亮度控制发光机构的亮度。控制单元从副驾显示器接收亮度信号。依据一条或多条存储的表示显示器亮度与发光机构亮度的对应配属关系的特性曲线，控制单元控制发光机构。与环境亮度相结合地，也可以与之对应地存储特性曲线族，其依据环境亮度和显示器亮度表明发光机构的亮度。有利地，因此可以依据系统侧或由使用者调设的屏幕亮度来达成优化的司机视线遮蔽。
在另一优选实施方式中，该装置包括环境光传感器，其中，控制单元依据环境亮度控制发光机构的亮度。依据一条或多条表明环境亮度与发光机构亮度的对应配属关系的特性曲线，该控制单元控制发光机构。该特性曲线凭经验被确定，做法是在各不同环境亮度下如此调设发光机构亮度，即，在防窥视机构切换到遮蔽的情况下从司机位置看不到副驾显示器上的剩余片段、即投影/图影。在优选实施方式中，环境光传感器布置成关于发光机构的和副驾显示器的光入射被屏蔽，因为否则发光机构的光强度的变化会被评估为环境亮度的变化。屏蔽例如通过远离副驾显示器布置和/或通过屏蔽壳体来实现。
在一个改进方案中，发光机构只在高于预定极限速度时被启用。在低速范围内，司机因剩余片段而分心的危险低，就此可放弃发光机构的启用。
在一个改动的实施方式中，发光机构包括遮光板，其将从发光机构射出的光聚焦到副驾显示器。通过将从发光机构射出的光集束，车辆内室不再被过分照亮，由此可以减少司机的分心。
在另一个优选实施方式中，该发光机构布置在优选安置在车辆顶盖中的操作模块内。这样的操作模块通常布置在司机和副驾之间的车顶区域内并且例如包括用于滑顶、内室照明装置和阅读灯的操作件。通过将发光机构集成在操作模块中，除了有利的位置外还提供电流和数据线的相应接线可能方式，因此可以低成本地实现根据本发明的遮蔽装置。
在另一个实施例中，副驾显示器依据环境光调整屏幕亮度。为了保证尽量好的内容可识别性和同时保证尽量减轻观看者晃眼，屏幕亮度在黑暗的情况下被降低并且在高的环境亮度的情况下被提高。与发光机构相结合地，可以在副驾显示器的所有工作状态下实现有效的司机视线遮蔽和副驾无疲劳观看所需的高图像质量。
在其它或替代实施方式中，副驾显示器包括棱镜膜，棱镜膜为了避免在机动车风挡玻璃中的干扰司机的镜像而造成屏幕亮度从预定极限角度起减弱。尤其是发光机构的在副驾显示器上引起的、在风挡玻璃处再反射并导致司机视线受阻和分心的光线反射借助该棱镜膜被禁止。在此如此设计棱镜膜，即，在显示器表面上的光射出从预定的竖向极限角度起按规定方式被削弱。
本发明的第二方面涉及一种机动车，其具有包含前述特征的遮蔽装置。
本发明的第三方面涉及一种用于控制遮蔽装置的方法，其中，副驾显示器被照亮以阻止在该防窥视机构被切换至遮蔽的情况下还是从司机座椅位置能看到的动态的剩余片段，其中，发光机构亮度在此依据副驾显示器的亮度被控制。借助根据本发明的遮蔽装置控制，在所有环境条件和显示器亮度下达成针对坐在司机座椅上的观看者的显示内容有效遮蔽。发光机构的强度在此被如此控制，即，在副驾显示器上的呈动态投影形式的剩余片段无法再被看到。
附图说明
其它的优点、特征和细节来自或许参照图详细描述至少一个实施例的以下说明。所描述的和/或如图所示的特征可以单独地或在任何有意义的组合中形成发明主题，或许也独立于权利要求书，并且尤其也还能是一个或多个单独申请的主题。相同的、相似的和/或功能相同的零部件带有相同的附图标记，在此示出：
图1示出带有本发明的遮蔽装置的机动车内室，
图2示出用于依据环境亮度和副驾显示器亮度控制遮蔽装置的发光机构的特性曲线族。
具体实施方式
根据图1，示出示意性所示的车辆内室5的司机1和副驾3的驻留区域或座椅区域。车辆具有配属于司机1驻留区域的仪表盘7、居中布置的显示器9和副驾显示器11。仪表盘7给司机显示行驶相关数据，居中布置的显示器9设置用于司机和副驾、例如用于调设无线电发射机或内室温度，并且副驾显示器11设置用于借助动态图像如电影、电视节目等供副驾娱乐。副驾显示器包括可切换的防窥视机构。从现有技术中知道的例如设计成防窥视膜的防窥视机构在显示动画或动态图像时被切换至起效，从而它们无法被司机座上的人、即在司机1驻留区域内的人看到。但是，通过启动防窥视来遮蔽看向显示器的司机视线在相应的显示器和环境亮度下仅不充分地实现，因为司机1由于在环境亮度与副驾显示器11的亮度之间的高对比度而还能够从其驻留区域或座椅区域看到动态投影。
在车辆内室5中还设置有车顶操作单元13。除了各不同的未示出的用于滑顶、阅读灯等的操作件外，在车顶操作单元13中设有发光机构15。从发光机构15射出的光线束17借助遮光板12被聚焦到副驾显示器11。
通过未示出的数据线，发光机构15连接至控制单元19。控制单元19又通过数据线连接至副驾显示器11和环境光传感器19。
在控制单元19中存有特性曲线，其给车辆内室5中的每个亮度值和副驾显示器11的每个亮度值分配发光机构15的一个亮度值。
发光机构15被控制单元19如此控制，即，它处于从特性曲线或特性曲线族依据环境亮度和副驾显示器亮度所确定的亮度值。
由发光机构15射出的光线被聚焦到副驾显示器11，因此可以减小与环境的对比度差异。通过减小对比度差异，无法再从司机1的驻留区域在副驾显示器11上看到剩余片段。
图2举例示出存储在控制单元19中的用于控制发光机构15的特性曲线族。关于轴23绘制出环境亮度，关于轴25绘制出副驾显示器的亮度。环境亮度和显示器亮度的每个值对配属有一个关于轴27绘制的发光机构15亮度。针对在所述值对之间的值，发光机构15的亮度值被内推。特性曲线族可以依据防窥视机构和副驾显示器的构型而明显不同于所示特性曲线族。所示特性曲线族仅用于表明基础关系。
例如在很低的显示器亮度和同时低的环境亮度下，因为小的对比度差异而应该设定发光机构15的低亮度。随着显示器低亮度不变而环境亮度提高，发光机构的亮度则可以因为对比度增大而提高。
在高环境亮度和低显示器亮度的情况下，应该提高发光机构15的亮度。随着环境高亮度不变而显示器亮度提高，发光机构15的亮度可以因为对比度减小而减小。
为了能考虑所有由构型决定的影响，凭借经验来确定特性曲线族的值。为此，针对环境亮度和显示器亮度的相应的值对，确定一个对发光机构亮度最佳的值，即如下的亮度值，其允许针对位于司机1的驻留区域内的观看者尽量最佳地隐去副驾显示器的内容。
虽然通过优选实施例详细示出和解释了本发明，但本发明不受所公开的例子的限制，技术人员可从中推导出其它变化而没有脱离发明保护范围。因此清楚明白的是存在许多变化可能性。也清楚明白的是所例举的实施方式真的只是例子，其绝不应被理解为比如对保护范围、应用可能性或发明配置的限制。相反，本说明书和附图说明使技术人员能够具体实现示例性实施方式，其中，技术人员在知道了所公开的发明构思下可以完成例如关于在一个实施例中提到的各个零部件的功能或布置的各种各样的改变，而没有脱离由权利要求书及其合法等同比如说明书中详述限定的保护范围。

Claims (8)

1.一种机动车内的遮蔽装置，其包括带有可切换的防窥视机构的副驾显示器(11)，该防窥视机构在预定的工作状态下被切换至起效，从而无法从司机(1)的座椅区域看到在该副驾显示器(11)上所显示的显示内容，
其特征是，
该遮蔽装置包括对准该副驾显示器(11)的、被控制单元(19)控制的发光机构(15)，该发光机构照亮该副驾显示器(11)以阻止在该防窥视机构被切换至起效的情况下还是从该司机(1)的座椅区域能看到的包含剩余片段的显示内容，其中，该控制单元(19)依据该副驾显示器(11)的亮度来控制该发光机构的亮度。
2.根据权利要求1所述的遮蔽装置，其特征是，该装置包括环境光传感器(21)，其中，该控制单元(19)依据环境亮度来控制该发光机构(11)的亮度。
3.根据前述权利要求之一所述的遮蔽装置，其特征是，该发光机构(11)包括将从该发光机构(11)射出的光聚焦到该副驾显示器(11)的遮光板(12)。
4.根据前述权利要求之一所述的遮蔽装置，其特征是，该发光机构(11)布置在设于车辆顶盖内的操作模块(13)中。
5.根据前述权利要求之一所述的遮蔽装置，其特征是，该副驾显示器(11)依据环境光调整屏幕亮度。
6.根据前述权利要求之一所述的遮蔽装置，其特征是，该副驾显示器(11)包括棱镜膜，该棱镜膜为了避免在机动车风挡玻璃中的干扰司机的镜像而造成屏幕亮度从预定极限角度起减弱。
7.一种机动车，具有根据权利要求1至6之一所述的遮蔽装置。
8.一种用于控制遮蔽装置的方法，该遮蔽装置包括具有可切换的防窥视机构的副驾显示器(11)，该防窥视机构在预定的工作状态下被切换至起效，从而无法从司机的座椅区域看到在该副驾显示器(11)上所显示的显示内容，其特征是，该副驾显示器(11)被照亮以阻止在该防窥视机构被切换至遮蔽的情况下还是从司机的座椅位置能看到的包含剩余片段的显示内容，其中，该发光机构的亮度依据该副驾显示器的亮度被控制。
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