An LED unit U of the present invention includes an LED 17 that is a light source, a diffuser lens 19, a board reflection sheet 23 and a restriction member 27. The diffuser lens 19 is provided to face a light emitting surface 17a of the LED 17. The board reflection sheet 23 is provided to face a surface of the diffuser lens 19 that is closer to the LED 17 and is configured to reflect light. The restriction member 27 projects from the diffuser lens 19 toward the board reflection sheet 23 and restricts positional relationship between the diffuser lens 19 and the board reflection sheet 23.
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