发明名称 ANALOG-DIGITAL ELECTRONIC WATCH
摘要 PURPOSE:To obtain an electronic watch whose analog part is provided with an impression of quality-class article without decreasing a clear contrast in a digital display, by a method wherein transparent poezoelectric ceramics is stuck on the cover glass of the analog part to make it serve as a transparent buzzer. CONSTITUTION:Transparent piezoelectric ceramics is stuck on the analog part 4 of cover glass 2, and when an alarm signal is supplied to the part through a metal film 7, an alarm sound is generated therefrom. Accordingly, the dial plate of the analog part 4 is given an amber color, an impression of a quality-class article, without decreasing a clear contrast in a digital part.
申请公布号 JPS5850490(A) 申请公布日期 1983.03.24
申请号 JP19810147889 申请日期 1981.09.21
申请人 HITACHI SEISAKUSHO KK 发明人 KUMADA AKIO;IKEZAWA TOORU
分类号 G04G9/00;G04C3/00;G04C3/14;G04C21/02;G04G13/02;G04G17/08;G04G99/00 主分类号 G04G9/00
代理机构 代理人
主权项
地址