| 摘要 |
An illumination device which comprises an optically transparent tube having a shape with a plurality of concave surfaces, that create lens effects^ a plurality of light-emitting diodes (LEDs) fixed on a plurality of the LED substrates? electric contacts on both ends of the LED substrates; an adapter attached to the tube? and an end cap for covering the adapter. The substrates may be inserted or attached to the wall of the optically transparent tube, or held inside the tube by a holding ring. |
