| 摘要 |
PROBLEM TO BE SOLVED: To avoid complicated work and heat deterioration by providing a name plate having a polarizing plate, locating the polarizing plate on the front face of a liquid crystal display, and displaying the liquid crystal display through the polarizing plate. SOLUTION: A polarizing plate 2b provided on a name plate 2 and a liquid crystal display 1 having no polarizing plate on the surface side integrally display a watt-hour measured value. When the polarizing plate 2b connected to the name plate 2 on the surface side of the liquid crystal display 1 is discolored and deteriorated by the direct sunlight with the elapse of the operating time and the display of the liquid crystal display 1 becomes unreadable, the display of the liquid crystal display 1 becomes readable via the easy work to replace the name plate 2. Since the display content of the liquid crystal display 1 becomes readable as before via the replacement of the name plate 2, the complicated work to replace the liquid crystal display 1 arranged in an instrument and the deterioration of a printed wiring board by heat when the liquid crystal display 1 is replaced can be avoided. |
