PURPOSE: To provide a luminous dial structure for a timekeeper which is comparatively high in brightness, sufficiently long in a visual identification time and rich in ornamentation.
CONSTITUTION: A lot of recess parts are engraved on the upper face of a metal- made lower face plate 2. These recess parts is filled with a light accumulativity luminous agent 6 whose surface is painted with a clear lacquer 7. A semitransparent ground glass-made upper face member 3 is bonded on the surface of the clear lacquer with an adhesive agent. Time indication scale is printed on the upper face of the upper face member 3. In a dark place, the lattice-like divided light accumulativity luminous agent 6 illuminates the glass-made upper face member 3 from the rear.
JPS6071977A | 1985-04-23 | |||
JPH04180990A | 1992-06-29 | |||
JPS60151250A | 1985-08-09 | |||
JP4045987B | ||||
JPS5912077B2 | 1984-03-21 | |||
JP3070390B | ||||
JP59064523B |