Luminous component

The invention relates to a luminous component which comprises a transparent closed shell, electroluminescent gas, a first excitation light layer and a first full-dielectric optical multi-layer film, wherein the transparent closed shell is provided with a first inner side wall and a first outer side wall which are opposite to each other, and a second inner side wall and a second outer side wall which are opposite to each other; the electroluminescent gas is arranged in the transparent closed shell and is suitable for providing an ultraviolet source; the first excitation light layer is configured on the first inner side wall or the first outer side wall; the first full-dielectric optical multi-layer film is configured on the second inner side wall or the second outer side wall; the first excitation light layer is suitable for absorbing the ultraviolet source to provide a visible light source; and the first full-dielectric optical multi-layer film is suitable for reflecting the ultraviolet source and the visible