| 摘要 |
<P>PROBLEM TO BE SOLVED: To attain a circular lighting system using LEDs. <P>SOLUTION: The circular lighting system comprises a light-emitting unit in which a plurality of light-emitting diode elements L as a light source are arranged in three rows with prescribed arrangement intervals on a nearly circular ring-shape substrate 1 with good thermal conductivity, a front cover member 2 which transmits luminous flux outputted by each light-emitting diode element L of the light-emitting unit and of which cross-section is formed in nearly a semi-circular form, a rear member 3 in which a step portion for receiving the lower side of the both ends of the substrate 1 of the light-emitting unit is formed and is installed on the opposite side to the front cover member 2 by pinching the light-emitting unit, a power supply unit 4 which is installed on the rear member 3 and connected to the outside power supply to form a power source for driving the light-emitting unit, and a socket to connect the power supply unit 4 with the outside power supply. <P>COPYRIGHT: (C)2012,JPO&INPIT |
