LAMP UNIT AND METHOD FOR MANUFACTURING LAMP UNIT

A lamp unit according to an embodiment is a lamp unit that irradiates with light from a light source, and includes: a circuit board on which the light source is mounted; a housing configured to have an internal space for accommodating the circuit board; a lens configured to be attached to the housing and emit the light from the light source to the outside of the housing, wherein the housing include an insertion hole for inserting the circuit board into the internal space from the outside of the housing to which the lens is attached.