| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED dimming lighting device capable of manufacturing at low cost and dimming an LED.SOLUTION: The LED dimming lighting device is provided with a switch part 10 coupled with a knob 16, a nonconducting part 15 in free rotation, first conductive sites 11A each with its root retained by the nonconducting part 15 and extended in a rod shape from the nonconducting part 15 to a direction separating from each other, a circular arc first conductive site 11B of which a center is communicated with each tip of the first conductive sites 11A, second conductive sites 12A each with its root retained by the nonconducting part 15 and extended in a rod shape from the nonconducting part 15 to a direction separating from each other, a circular arc second conductive site 12B of which a center is communicated with each tip of the second conductive sites 12A, and a plurality of output terminals 18 formed in circular arc shapes on a side surface of a casing 19. A user rotates the knob 16 (for instance, to 45° or 90°) by displacing the first conductive sites 11A, 11B, whereby, the number of light-emitting diodes L1 to L10 can be changed for irradiating light by supplying driving current. |
