Abstract: A light-emitting device includes a base unit, a light-guiding structure with a single light-guiding element disposed on the base unit, and a cover unit having a light-transmitting cover body disposed on the base unit to cover the light-guiding structure. The light-guiding element includes a columnar body having a vertical surrounding peripheral face and a light input surface for receiving light from the light emitting unit, and an expansion body integrally and upwardly extended from the columnar body. The expansion body has a surrounding bottom surface connected with the vertical surrounding peripheral surface, an inclined surrounding peripheral surface connected with the surrounding bottom surface, and a trumpet-shaped top surface connected with the inclined surrounding peripheral surface.

Abstract: A light-emitting device includes a base unit, a light-guiding structure and a cover unit. The light-guiding structure is disposed on the base unit, and the light-guiding structure includes a light-guiding unit and a light-emitting unit. The cover unit includes a light-transmitting cover body disposed on the base unit to cover the light-guiding structure. The light-guiding unit includes a single light-guiding element having a columnar body and an expansion body integrally and upwardly extended from the columnar body. The columnar body has a light input surface and a vertical surrounding peripheral surface. The expansion body has a surrounding bottom surface connected with the vertical surrounding peripheral surface, an inclined surrounding peripheral surface connected with the surrounding bottom surface, and a trumpet-shaped top surface connected with the inclined surrounding peripheral surface.