Lamp apparatus and luminaire

摘要

According to one embodiment, a lamp apparatus (18) includes a light-emitting module (23), housing (21), and a lighting circuit (25). The light-emitting module (23) includes a light-emitting element. The housing (21) opens in the direction of irradiation of a light beam and having a cap (30) on a side opposite from the direction of irradiation of the light beam. The cap (30) is provided with a light-emitting module mounting portion (46) projecting in the direction of irradiation of the light beam and the light-emitting module (23) is mounted on the light-emitting module mounting portion (46). The lighting circuit (25) is accommodated in the housing.