Backlight for an indicator lamp having two light guides with staggered incident ends and light sources disposed on outer circumference of the light guides

Abstract

The present disclosure provides a backlight module of an indicator lamp, comprising a circuit board, edge-type light sources, a first light exit structure and a second light exit structure, the edge-type light sources are electrically connected to the circuit board, the edge-type light sources are disposed at an outer circumference of light-incident ends of the first light exit structure and the second light exit structure, respectively, the edge-type light sources are used to illuminate the light-incident ends of the first light exit structure and the second light exit structure, respectively, the light-incident ends of the first light exit structure and the second light exit structure are disposed staggered, colors of the first light exit structure and the second light exit structure are different, the first light exit structure is disposed on the circuit board, the first light exit structure is provided with a first yielding hole, the first light exit structure is provided with a first bright area, the second light exit structure is disposed on the first light exit structure, the second light exit structure is provided with a second yielding hole for receiving the first bright area, and the second light exit structure is provided with a second bright area. The present disclosure, by providing the first light exit structure and the second light exit structure, slows down the consumption speed of the service life of the edge-type light sources and improves the inspection efficiency of the inspection process before shipment.