Abstract: An electrospinning device includes a rotatable carrier, a collector unit including at least one collector bar, a dispenser for dispensing a polymer composition, and a power supply. The collector bar is disposed on the rotatable carrier and is rotatable about a longitudinal axis. The power supply is configured to produce a potential difference between the dispenser and the collector bar so as to permit the polymer composition to erupt from the dispenser as a jet of the polymer composition toward the collector bar to thereby permit the resultant electrospun fibers to be collected on the collector bar. By rotating the rotatable carrier at a relatively fast speed, the electrospun fibers are drawn to be arranged along the longitudinal axis.

Abstract: An electrospinning device includes a rotatable carrier, a collector unit including at least one collector bar, a dispenser for dispensing a polymer composition, and a power supply. The collector bar is disposed on the rotatable carrier and is rotatable about a longitudinal axis. The power supply is configured to produce a potential difference between the dispenser and the collector bar so as to permit the polymer composition to erupt from the dispenser as a jet of the polymer composition toward the collector bar to thereby permit the resultant electrospun fibers to be collected on the collector bar. By rotating the rotatable carrier at a relatively fast speed, the electrospun fibers are drawn to be arranged along the longitudinal axis.

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.