| 摘要 |
Light emitting components are mounted on the component mounting portion and arranged in a line along the length of the component mounting portion. Wirings are led out from the extended portion to the component mounting portion and include a first group of wirings which extend in a first direction along the length of the component mounting portion, and a second group of wirings which extend in a second direction that is opposite to the first direction. The light emitting components include a first group of light emitting components arranged on the first direction side of the component mounting portion, and a second group of light emitting components arranged on the second direction side of the component mounting portion, the number of the first group of light emitting components and the number of the second group of light emitting components being the same.
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