US Patent 9822946 Illumination device

One of a radiator plate (21) and a globe cover (13) is provided, on a part which makes contact with the other one, with a plurality of cutout sections (41), and the other one is provided, at positions corresponding to the respective cutout sections (41), with a plurality of projections (31). By engaging the cutout sections (41) and the projections (31), the globe cover (13) is attached to the radiator plate (21). This makes it possible to prevent, for a long term, the globe cover (13) which encloses a light source so as to cover the light source from being detached.