| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED lamp capable of restraining deterioration of an illumination environment by detecting no lighting-up group of LED groups, an LED lighting-up device, and a lighting fixture using the LED lamp and LED lighting-up device.SOLUTION: The LED lamp 1 a straight tube-shaped light-emitting tube 10 internally preparing the LED groups 14a to 14c electrically connected in parallel, power supply terminals 12, 12 arranged on a base 11 at one end of the light-emitting tube 10 and supplying power to the LED groups 14a to 14c, and signal terminals 13, 13 arranged on a base 11 at the other end of the light-emitting tube 10 and outputting electric signals changed in response to electric characteristics of the LED groups 14a to 14c. |
