| 摘要 |
PURPOSE: To accurately read time even in a dark place by adding a LED watch and causing a LED display to emit light by a LED watch driving circuit. CONSTITUTION: For a wristwatch 1a having a LED display 5, an analog movement 6 and a circuit board 7 to which the LED display 5 is stuck are connected together to constitute a module in a normal wristwatch case 3a. By a battery loaded in the wristwatch 1a, an LED watch circuit part and an analog watch circuit part are caused to continue their operations. Then, a button switch 18 formed in one side of the case 3a is operated while the LED display 5 is OFF, and an interlocking switch 19 is turned ON once. Thus, the LED display 5 is set, a light emission operation is performed for a certain time, a light is projected through a light diffusion filter 10a on the upper side to the character plate of a semi-transmissive light reflection plate 11a and a current time is displayed. |
