| 摘要 |
PROBLEM TO BE SOLVED: To provide a lighting device hardly getting warped by a self weight and thermal expansion.SOLUTION: The lighting device includes: a plurality of LEDs 2 housed inside a tubular body 14 at least a part of which is composed of a case member 6a, 6b; and a heat sink 1 radiating heat from the LEDs 2. The heat sink 1 includes a platy part 11 housed inside the tubular body 14 and the platy part 11 is housed in the tubular body 14 in parallel in a vertical direction when fitted with a straight tube lamp 100. |
