Concealed electric heating element arrangement for vehicle windshields
    3.
    发明授权
    Concealed electric heating element arrangement for vehicle windshields 失效
    隐藏的电加热元件布置用于车辆挡风玻璃

    公开(公告)号:US4373130A

    公开(公告)日:1983-02-08

    申请号:US114079

    申请日:1980-01-21

    摘要: The windshield for a motor vehicle is characterized by a transparent panel having a lower region normally outside the driver's field of vision and where at least one windshield wiper is located in the rest position of the wiper. An electric resistance heating element, formed either as a continuous layer or as a plurality of individual conductors connected in parallel by bus bars, is carried on the windshield only in the lower region for heating the area on which the wipers rest. A continuous layer of a heat radiation absorbing ceramic material opaque to ambient light and coextensive with the area of the heating element is disposed on the windshield between the heating element and the windshield wiper to shield the heating element from view from the front of the windshield and to uniformly distribute heat over the lower portion of the windshield. The windshield is a laminate including inner and outer glass panes with a plastic layer therebetween. The heating element and opaque layer may be disposed on the inner and outer surfaces of the outer pane, respectively. Alternatively, the heating element can be disposed between the panes and the opaque layer can be provided on either the inner or outer surface of the outer pane. The opaque layer can be provided on the exposed surface of the inner pane, the heating element disposed thereon, and a second opaque layer of lower heat conductivity provided thereover to form a protective covering. The opaque layer is preferably is dark in color, e.g., a black enamel.

    摘要翻译: 用于机动车辆的挡风玻璃的特征在于具有通常在驾驶员视野外的较低区域的透明面板,并且其中至少一个挡风玻璃刮水器位于擦拭器的静止位置。 形成为连续层或由汇流条并联连接的多个单独导体的电阻加热元件仅在下部区域承载在挡风玻璃上以加热擦拭器所在的区域。 在加热元件和挡风玻璃刮水器之间的挡风玻璃上设置有不透过环境光并且与加热元件区域共同延伸的吸热陶瓷材料的连续层,以将加热元件从挡风玻璃的前部看去,以及 以均匀分布在挡风玻璃下部的热量。 挡风玻璃是一种层压板,包括内部和外部玻璃板,其间具有塑料层。 加热元件和不透明层可以分别设置在外部窗格的内表面和外表面上。 或者,加热元件可以设置在窗格之间,并且不透明层可以设置在外部窗格的内表面或外表面上。 不透明层可以设置在内部窗格的暴露表面上,设置在其上的加热元件,以及设置在其上的第二不透明层,以形成保护性覆盖物。 不透明层优选为黑色,例如黑色搪瓷。