| 摘要 |
A holding member has holders each holding one end of each of a plurality of parallelly drivable tube lamps and supplying electric power, outputted from a power source device, to the tube lamps. The holding member has buffer sections arranged to buffer thermal stress in the direction in which the tube lamps are arranged. With the holding member, the effect of the buffer section suppresses deformation of the tube lamps occurring in the direction in which the lamps are arranged, so that there is no possibility of lamp breakage due to repeatedly occurring deformation of the tube lamps.
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