发明授权
US4959759A Automotive instrument display having a thickfilm electroluminescent lightpipe pointer 失效
具有厚膜电致发光管指针的汽车仪表显示器

  • 专利标题: Automotive instrument display having a thickfilm electroluminescent lightpipe pointer
  • 专利标题(中): 具有厚膜电致发光管指针的汽车仪表显示器
  • 申请号: US389446
    申请日: 1989-08-04
  • 公开(公告)号: US4959759A
    公开(公告)日: 1990-09-25
  • 发明人: James L. Kohler
  • 申请人: James L. Kohler
  • 申请人地址: IN Kokomo
  • 专利权人: Delco Electronics Corporation
  • 当前专利权人: Delco Electronics Corporation
  • 当前专利权人地址: IN Kokomo
  • 主分类号: B60Q3/04
  • IPC分类号: B60Q3/04
Automotive instrument display having a thickfilm electroluminescent
lightpipe pointer
摘要:
A solid state thickfilm electroluminescent lamp illuminates a pointer for viewing automotive instrument clusters during low ambient light conditions. A solid state ThFEL lamp is placed between the faceplate of a vehicle dashboard and the air core mechanism. An instrument cluster pointer is situated on the opposite side of the faceplate from the ThFEL lamp. The ThFEL lamp is donut-shaped with a hole in its center to allow the pointer to connect to the air core mechanism. The lamp has a reflectie electrode and a transparent electrode situated such that the reflective electrode directs the ThFEL light towards the pointer where it is needed and away from the air core mechanism. The pointer is designed to collect a large area of dim light, focusing that light down the pointer shaft and reflecting it to an observer viewing the instrument cluster.
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