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License plate for back illumination and method for making same

A backlighting and license plate technology, applied to illuminated signs, instruments, display devices, etc., can solve the problems of insufficient sealing of the device and reduce the quality of the license plate device, and achieve the effects of easy replacement, high durability, and high cost-effectiveness

Inactive Publication Date: 2008-11-12
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, doing so may make the unit less airtight so that over time, for example, moisture and dirt seeping into the frame can degrade the license plate unit

Method used

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  • License plate for back illumination and method for making same
  • License plate for back illumination and method for making same
  • License plate for back illumination and method for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0051] figure 1 A license plate 200 is shown including indicia 210 defining the license number issued by the competent authority. The license plate 200 also exhibits a barcode 220 that may give additional information about the license plate, such as the source of manufacture.

[0052] figure 2 A first embodiment of a license plate is shown. This example and the following Figure 3 to Figure 8 The illustrated embodiments are shown by showing along the figure 1 A cross-section of the license plate in centerline A is shown. Figure 2 to Figure 8 The same license plate features are indicated by the same reference numerals in . Such as figure 2 As shown, the license plate 10 includes a transparent retroreflective sheet 11 bonded to a transparent polymeric support sheet 13 by a transparent adhesive layer 12 . In use, the retroreflective sheet 11 is arranged towards the light source and the transparent polymeric support sheet 13 towards the viewer. The license plate 10 incl...

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PUM

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Abstract

The present invention provides a license plate comprising a laminate that comprises: (i) a transparent polymeric support sheet (13); (ii) a transparent retroreflective sheet (11); (iii) one or more transparent adhesive layers (12) adhering said transparent polymeric support sheet (13) and said transparent retroreflective sheet (11) together; and (iv) indicia (14). The license plate can be removably mounted to a light source for back lighting the license plate. The invention further describes a method of making the license plate and to a license plate assembly.

Description

technical field [0001] The invention relates to a license plate suitable for backlighting, ie a backlit license plate, which can be removably mounted on a light source such as an electroluminescent device or the like. The invention also provides methods of making backlit license plates and license plate assemblies. Background technique [0002] Motor vehicles used on the road, such as cars, buses and trucks, commonly use license plates that are typically illuminated from their fronts when it is dark. Specifically, the logo on the license plate representing the license plate number issued by the competent state authority is usually placed on a retroreflective background. This retroreflective property enhances the visibility of the license plate during the day and at night when other motor vehicle lights or street lights illuminate the front of the license plate. But to meet regulatory requirements, license plates also need to be illuminated with lights mounted on motor vehi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/10G09F13/04
CPCB60R13/105B60R13/10
Inventor 鲁迪格·T·弗里施斯文·普罗柳斯斯塔凡·R·雷曼阿诺德·埃贝魏因
Owner 3M INNOVATIVE PROPERTIES CO
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