Liao, Ching-Shin;

Luminous body for a watch

A luminous body mounted in a watch below hands and a protective crystal and controlled by a switch to produce light, the luminous body including an insulative layer sandwiched in between a first conductive layer and a second conductive layer, electroluminescent means arranged on the insulative layer for producing light upon electric connection of electricity to the first and second conductive layers, the electroluminescent means having a first electroluminescent layer formed of a plurality of electroluminescent indices respectively arranged on the insulative layer around the border area of the insulative layer and a second electroluminescent layer of annular shape arranged on the center area of the insulative layer, a plurality of marks covered on the electroluminescent indices of the first electroluminescent layer, and a light penetrable layer covered on the first conductive layer, the light penetrable layer having a plurality of raised portions corresponding the electroluminescent indices of the first electroluminescent layer for refracting light.

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What is claimed is:

1. A luminous body mounted in a watch below hands and a protective crystal and controlled by a switch at said watch to produce light, comprising:

a first conductive layer, said first conductive layer being transparent, and having a conductor connected to power source;

a second conductive layer, said second conductive layer having a conductor connected to power source;

an insulative layer sandwiched in between said first conductive layer and said second conductive layer;

electroluminescent means arranged on said insulative layer for producing light upon electric connection of electricity to said first conductive layer and said second conductive layer, said electroluminescent means comprising an electroluminescent layer formed of a plurality of electroluminescent indices respectively arranged on said insulative layer around the border area of said insulative layer;

a plurality of marks disposed corresponding to the electroluminescent indices of said electroluminescent layer for time indication by the hands of the watch;

a light penetrable layer covered on one side of said first conductive layer opposite to said insulative layer and said second conductive layer, said light penetrable layer comprising a plurality of raised portions disposed at locations corresponding the electroluminescent indices of the electroluminescent layer of said electroluminescent means for refracting light.

2. The luminous body of claim 1 wherein the electroluminescent indices of said electroluminescent layer are colored with different colors.

3. The luminous body of claim 1 wherein said marks are hour numerals of Arabic numerals.

4. The luminous body of claim 1 wherein said marks are chapters of Roman numerals.

5. The luminous body of claim 1 wherein said marks are respectively covered on the electroluminescent indices of said electroluminescent layer.

6. The luminous body of claim 1 wherein said marks are respectively made on said first conductive layer corresponding to the electroluminescent indices of said electroluminescent layer.

7. The luminous body of claim 1 wherein said electroluminescent means further comprising a second electroluminescent layer of annular shape arranged on said insulative layer around the center area of said insulative layer.