| 摘要 |
PURPOSE:To obtain the small-sized and lightweight device by installing a display element which is arranged oppositely to a light receiving display element and varies the light transmissivity by varying the applied voltage, thus eliminating the useless consumption of the noise-mixed electric power due to a radio. CONSTITUTION:An indication part 3 consists of a glass 4, panel 5, and a lower case 6, and a light receiving display element 13 made of acrylic resin is fitted into the opened port part 11 of the panel 5. A display element 14 is attached onto the back surface of the light receiving display element 13, and said element 14 is pressed by a retainer 15 screw-fixed onto a retainer installation seat part 12 and kept in closely attached state onto the element 13. A plastic film liquid crystal display element having a liquid crystal 16 sealed into a plastic transparent plate 17 is used as the element 14, and the light transmissivity of the element 14 is varied by the variation of the applied voltage. |
