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Vehicle license plate and retroreflective sheet used for the same

A vehicle license plate, retroreflective sheeting technology, applied in vehicle parts, illuminated markings, reflective reflectors, etc., to achieve the effect of excellent recognition

Active Publication Date: 2012-08-22
NIPPON CARBIDE KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0031] The present invention solves the above-mentioned problems of the CLP provided with the prior known oblique authentication marks

Method used

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  • Vehicle license plate and retroreflective sheet used for the same
  • Vehicle license plate and retroreflective sheet used for the same
  • Vehicle license plate and retroreflective sheet used for the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0092] The retroreflective sheet (trade name "Nikkalite") manufactured by Enxiai (Hangzhou) Chemical Co., Ltd., an engineering grade for license TM 48012”), make the neodymium-doped yttrium vanadate (Nd:YVO4) laser (wavelength 1064nm) with an average power of 12W at 15-20 kHz to the front of the retroreflective film at a horizontal angle (β) + 45 degrees and a vertical angle (α) Irradiate at +20 degrees to obtain a retroreflective sheet for vehicle license plates with identification marks.

[0093] The identification mark set on the obtained retroreflective sheet can only be identified from the vicinity of the angle irradiated by the laser identification mark.

Embodiment 2

[0095] In the vehicle license plate with the identification mark obtained in Example 1, at a position other than the part where the identification mark has been set, the front of the retroreflective sheet is set at a horizontal angle (β)-45 degrees and a vertical angle (α) + 20 Irradiate at different angles to obtain retroreflective sheets for vehicle license plates with identification marks set from two different angles.

[0096] The identification marks provided on the obtained retroreflective sheeting can only be identified from the positions and angles irradiated by the respective laser identification marks.

Embodiment 3

[0098] In the same area of ​​the vehicle license plate with the identification mark obtained in Example 1 where the identification mark has been set, the front of the retroreflective sheet is irradiated at a horizontal angle (β)-45 degrees and a vertical angle (α) + 20 degrees Different patterns of identification marks are used to obtain retroreflective sheets for vehicle license plates with identification marks set from two different angles.

[0099] The identification marks set on the obtained retroreflective sheeting can only be identified from the vicinity of the angle irradiated by the respective laser identification marks in the same area.

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PUM

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Abstract

Provided is a vehicle license plate having a retroreflective surface having a certification mark which can be recognized in a particular direction. The certification mark can be recognized from out of the vehicle advance range.

Description

Technical field [0001] The present invention relates to a vehicle license plate (hereinafter referred to as CLP: Car License Plate) with a retroreflective surface provided with an inclined certification mark (hereinafter referred to as a certification mark), and a retroreflective sheet provided with an inclined certification mark used therefor . [0002] Specifically, the present invention relates to a CLP and a retroreflective sheet used in the CLP. The CLP has a retroreflective surface and is provided with an oblique certification mark on the CLP, which can be identified outside the forward range of the vehicle. [0003] More specifically, the present invention relates to a CLP and the retroreflective sheet used in the CLP. The CLP has a retroreflective surface and is provided with an inclined certification mark on the CLP. Observers such as police officers can view the CLP from outside the forward range of the vehicle. The certification mark is used for identification, thus impr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R13/10G02B5/12G09F7/00G09F13/16G09F19/14
CPCG09F3/00G09F13/16B60R13/10G02B5/12
Inventor 今井靖志竹田幸弘
Owner NIPPON CARBIDE KOGYO KK
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