Carriageway-marking device and system

A roadway and light pipe technology, applied in the field of roadway marking devices and systems, can solve problems such as driver's dazzling, and achieve the effect of less maintenance and maintenance and long service life

Inactive Publication Date: 2007-05-02
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also, since the lights need to be mounted at a height comparable to the driver's head, th

Method used

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  • Carriageway-marking device and system
  • Carriageway-marking device and system
  • Carriageway-marking device and system

Examples

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[0018] In the drawing, a traffic lane marking device 1 is shown, which generally includes a cylindrical light pipe 2 and a light projector 3 at one end of the light pipe 2.

[0019] In a manner known per se, the light pipe 2 includes a supporting transparent material 4 formed in a cylindrical shape.

[0020] The supporting transparent material 4 is selected to be sufficiently flexible to allow bending according to the typical radius of curvature of the road. Since co-extruded polycarbonate and acrylic materials have a suitable life span of at least ten years and suitable strength, they are suitable supporting transparent materials. The supporting transparent material 4 can also resist ultraviolet rays well.

[0021] The supporting transparent material 4 has a microstructure transparent material 5 as a lining. The microstructure transparent material 5 is more specifically arranged with its microstructure extending longitudinally and facing the outside.

[0022] A particularly suita...

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PUM

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Abstract

A carriageway-marking device (1), comprising: a tubular light pipe (2) having a longitudinally extending light output window (5a) and a light extractor means (6); and a light projector (3) coupled to a first end of said light pipe (2) for projecting light thereinto, characterized in that said light projector (2) comprises a plurality of LEDs (9).

Description

technical field [0001] The invention relates to a lane marking device and system. Background technique [0002] In addition to the lines on the road, the edges of the roadway are usually marked by a series of spaced apart retroreflective elements, usually white on the outside of the vehicle and red on the inside of the vehicle. Since such elements only become visible when light from oncoming vehicles is incident, their performance is poor. At high speeds, sharp bends, slopes and similar situations, this can happen too late. Performance can become extremely poor in conditions of low visibility, especially due to fog. [0003] Lighting devices are also sometimes used, for example at deviations or dangerous bends. Lighting fixtures typically consist of a row of individual lights that can be lit continuously or flashed sequentially. In either case, a single lamp may only provide non-sequential marking. Furthermore, since the lamps need to be mounted at a comparable height t...

Claims

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Application Information

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IPC IPC(8): E01F9/00G02B6/00G08G1/09F21V8/00
CPCE01F9/002F21Y2103/00F21W2111/02F21Y2101/02G02B6/0096E01F9/20F21Y2115/10
Inventor 玛塞拉·M·佩森蒂
Owner 3M INNOVATIVE PROPERTIES CO
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