Front windshield with transparent conductive layer
A technology of transparent conductive layer and front windshield, applied in the field of front windshield, can solve the problem of unsatisfactory local temperature rise, and achieve the effect of improving heating power density, avoiding local cold spots and uniform heating
Active Publication Date: 2021-10-19
FUYAO GLASS IND GROUP CO LTD
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Problems solved by technology
[0004] The technical problem to be solved by the present invention is to provide a front windshield with a transparent conductive layer in view of the disadvantages of the prior art that the transparent conductive layer is prone to produce local hot spots and local cold spots, and the local temperature rise is not ideal.
Method used
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Experimental program
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Effect test
Embodiment 1
[0052] Embodiment 1: According to Figure 4 The uncoated areas 104, 105, 106, 107 are set, and the shunt element 7 is added; the total resistance of the four conductive drain bars 72 in the shunt element 7 is the equivalent resistance of the transparent conductive layer of the same area corresponding to the uncoated area 104 43% of;
[0053] Apply a heating power of 400 to 610W to the front windshields of Comparative Example 1, Comparative Example 2 and Example 1 respectively, and after heating for 12 minutes, it is measured by a thermal imager Figure 7 , Figure 8 and Figure 9 Heating temperature cloud map;
[0054] exist Figure 7 Among them, the hot spots 71 and 72 with higher temperature are produced on the front windshield of Comparative Example 1, and the temperature of the frame portion 73 located below the non-coated region 104 is lower;
[0055] exist Figure 8 In comparison example 2, hot spots 81 and 82 are generated on the front windshield, the temperature ...
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Abstract
The invention relates to the field of glass products, in particular to laminated glass installed on automobiles, and specifically provides a front windshield with a transparent conductive layer. The front windshield comprises a first curved glass sheet, a second curved glass sheet, a thermoplastic interlayer and a transparent conductive layer, wherein an uncoated area is provided in the transparent conductive layer, and A first bus bar, a second bus bar and a shunt element are also arranged between the plates, each shunt element includes at least two conductive strips, and the conductive strips are electrically connected to the first bus bar through a conductive drain strip, and the conductive strips are electrically connected to the first bus bar. The total resistance is 25%-65% of the equivalent resistance of the transparent conductive layer of the same area corresponding to the uncoated area located in the non-confined area. The invention can significantly improve the heating power density of the area below the uncoated area, so that the temperature rise effect meets the requirements, realizes overall uniform heating, and meets the requirement of no hot spots after 12 minutes of heating.
Description
Technical field: [0001] The invention relates to the field of glass products, in particular to laminated glass installed on automobiles, and specifically provides a front windshield with a transparent conductive layer. Background technique: [0002] It is a known technology to use a transparent conductive layer to electrically heat the window glass, such as the technical solutions disclosed in patents US3313920, US5434384, US5824994 and DE102008029986A1. Requirements, and can generate heat under the action of current to quickly remove water vapor, snow and frost on the glass of the car. [0003] For the front windshield of a car, it is a better way to use a transparent conductive layer to realize electric heating. , RFID (radio frequency identification) antenna, rain sensor, camera and laser radar, etc., because the transparent conductive layer has a strong shielding of electromagnetic radiation signals, this will seriously affect the wireless data transmission inside and o...
Claims
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IPC IPC(8): C03C27/12H05B3/86
CPCC03C27/10H05B3/86
Inventor 曹晖曾东黄凤珠姚俊福原康太
Owner FUYAO GLASS IND GROUP CO LTD