Patent ID: 9557014
Date: 2017-01-31
CPC Classifications: F21K,F21W,F21Y

Claim:
1. A signal indicator lamp comprising an LED mounting substrate on which a plurality of sets of LEDs are mounted in a long-side direction at a predetermined interval, and made up of a plurality of consecutively provided lens units with cylindrical light guiding radiation portions provided so as to enclose the LED mounting substrate, wherein each LED is mounted at a position biased to a side from a central position in a short-side direction of the LED mounting substrate, a slit portion is defined in the light guiding radiation portion, wherein the slit is located in an axial direction such that the LED is arranged therein when the lens unit encloses the LED mounting substrate, a pair of opposite end faces of the slit portion are provided as incident surfaces of LED radiation light, and light made incident into the lens unit from the incident surfaces is guided by the light guiding radiation portion, and is radiated outward in the entire circumferential region thereof, and wherein