Patent ID: 9658384
Date: 2017-05-23
CPC Classifications: B60K,G02B,H01H

Claim:
1. A lighting device for a button, the lighting device comprising: a front panel; a push-type button mounted on the front panel; a light guide placed on a circumference of the button and configured to radiate light incident through a rear of the light guide to a front of the light guide, the light guide comprising: a light source placed at the rear of the light guide and configured to project light incident to the rear of the light guide, the light source comprising: wherein the incident surface is configured to receive light through the light source, wherein the blocking plate is configured to prevent light generated by the LED from being radiated in a lateral direction, wherein the button and the light guide are spaced apart from each other, and wherein a cross sectional area of the second central through hole is larger than a cross sectional area of the first central through hole.