| 摘要 |
A face shield assembly for a snowmobile or motorcycle helmet has a ventilation system for cold-weather face shield defogging. The face shield has a face shield frame, lower and upper face shield frame vents, and lower and upper air guides to direct the flow of air flowing through the lower and upper vents. The face shield may be a heated double lens shield having a weather lens, a face lens and an air gap in between the weather lens and the face lens. The assembly may also include an electric face shield defogging system having first and second electrodes extending along the upper and lower edge portions, respectively, of the air gap-facing surface of the face lens. Side areas of the face shield are substantially free of visual obstruction so as to enhance the rider's field of vision. There is a separate electric connector at an end of each electrode, with each connector extending through at least one lens and coming into direct contact with its respective electrode. First and second power leads connect with first and second connectors, respectively. The present face shield assembly may be provided without an electric heating system, in which the guided air flow alone acts to defog the shield.
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