| 摘要 |
A signal indicator lamp includes an LED mounting substrate 2, and is made up of a plurality of consecutively provided lens units 3 with cylindrical light guiding radiation portions 20 provided so as to enclose the LED mounting substrate 2. An LED 14 is mounted at a position biased to the side of an end portion 2D from a central position 2C in a short-side direction S of the LEDmounting substrate 2. In the light guiding radiation portion 20, a slit portion 23 is defined which is cut away in an axial direction X such that the LED 14 is arranged therein when the lens unit 3 encloses the LED mounting substrate 2. Light made incident into the lens unit 3 from incident surfaces 24 being a pair of opposite end faces of the slit portion 23 is guided by the light guiding radiation portion 20, and is radiated outward in the entire circumferential region thereof. |
