| 摘要 |
FIELD: electric engineering. ^ SUBSTANCE: heated item, for instance, heated windscreen, which has, in general, trapezoidal form, contains electroconductive element, for instance, electroconductive coating, between and in contact with pair of strip busbars that are installed at certain distance and have different length. Selected sections of coating between busbars are segmented for reduction of difference in power density between coating next to strip busbar, when current passes through the coating. In one non-limiting version width of segments next to longer busbar is made as smaller than the width of segments next to longer strip busbar. With such configuration power density in bottom part of windscreen is increased for more efficient removal of ice and snow. In the other non-limiting version coating has window of data transmission for transfer of frequencies in electromagnet spectrum, for instance, RF frequencies, for transfer of information inside the vehicle. Coating that surrounds electroconductive window contains break lines for segmentation of coating and elimination of hot spots around external border of data transmission window. ^ EFFECT: makes it possible to provide for even heating of item, in particular, of windscreen. ^ 55 cl, 7 dwg |
