Patent ID: 8641246

Claim:
A lamp unit comprising: a light-emitting module comprising a semiconductor light-emitting element; a lighting circuit configured to cause the semiconductor light-emitting element to light; and a housing comprising: a case opening in a direction of radiation of light, the case including a flat panel portion formed with a through-hole at a center of the flat panel portion on a side of the case opposite from a direction of radiation of light from the semiconductor light emitting element, and a base provided on the flat panel portion on a side opposite from the direction of radiation of the light from the semiconductor light emitting element, the lighting circuit arranged relative to the flat panel portion in a direction corresponding to the direction of radiation of light from the semiconductor light emitting element, and the light-emitting module mounted on the base on the side opposite from the direction of radiation of the light from the semiconductor light emitting element and aligned with the through-hole.