Symbol indicator

A display and symbol technology, applied in the field of symbol displays, can solve the problems of false, front panel does not provide phantom protection, etc., achieve the effect of low cost, simple logistics, and reduce the number of parts

Inactive Publication Date: 2012-11-07
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such symbol-dependent front panels do not offer optimal protection against phantoms, since the symbols to be displayed are characterized by the arrangement of the corresponding front lenses in the front panel, so that phantom effects are symbol-dependent and despite deactivating the symbol display Activated, but may spuriously produce illuminated, i.e. activated, symbols by reflection

Method used

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  • Symbol indicator

Examples

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Embodiment Construction

[0017] It can be seen from the figure that the LED module 1 with the individual LEDs 2 is arranged at an inclination angle α (of approximately 7°) relative to the front plate 3 . A plurality of collimator lenses 4 correspondingly assigned to the LED modules 1 are provided on the front plate 3 over the entire surface, wherein each collimator lens 4 is obliquely incident on the collimator lens 4 due to its shape A portion of the LED light is directed parallel to a substantially horizontal direction of travel for long-range display, and the remainder of the LED light is directed obliquely downward for short-range display. In this case, undesired spots or pixels of the respective symbols (for example numbers or letters) are covered with a light-absorbing cover. The LED modules 1 not required at this location are replaced by blind modules, ie by LED housings 5 ​​without LEDs 2 . The LED modules 1 required for the symbol pixels are connected via connection lines 6 to an unillustrat...

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Abstract

The invention relates to a symbol indicator, in particular for rail-bound traffic routes, comprising LED modules (1) for the pixelated far and near field representation of the symbol, and optical elements which are associated with the LED modules (1) which are arranged on a front plate (3). The aim of the invention is to produce different symbols using only a few optical and mechanical elements and to effectively protect against incident extraneous light on said indicator, such that the LED modules (1) respectively comprise an LED (2) and that the optical elements are embodied as collimator lenses (4) having a first spherical surface for the far field representation of the indicator and a second spherical surface for the near field representation of the indicator. The entire surface of the front plate (3) is provided with collimator lenses (4) and symbol-specific required pixels are produced by the LED modules (1).

Description

technical field [0001] The present invention relates to a symbol display, especially for a rail transit route, with LED modules for displaying symbols pixel by pixel at a short distance and a long distance, corresponding to the LED modules arranged on the front panel Equipped with optical components. Background technique [0002] The following explanations basically relate to sign displays for rail transit routes, without restricting the claimed object to this application. [0003] A symbol display for railway safety technology comprises a plurality of light spots—pixels—arranged in a grid. Symbols to be displayed, such as numbers or letters, are formed from a meaningful arrangement of defined individual pixels. For control symbols, electric drive components are usually used. Radiation characteristics of sign displays, especially light distribution, axial light intensity, color and phantom protection for remote and short-range displays support the field verification requi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G09F9/33G09F13/22
CPCG09F9/33G09F13/22
Inventor R.埃克尔U.弗罗斯特K.科斯特J.奥特尔
Owner SIEMENS AG
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