US 11,703,217 B1
Light-emitting fan
Tsung-Wei Lin, Taipei (TW)
Assigned to COOLER MASTER CO., LTD., Taipei (TW)
Filed by COOLER MASTER CO., LTD., Taipei (TW)
Filed on Aug. 10, 2022, as Appl. No. 17/885,176.
Claims priority of application No. 111206899 (TW), filed on Jun. 29, 2022.
Int. Cl. F21V 33/00 (2006.01); F04D 29/00 (2006.01); F04D 19/00 (2006.01)
CPC F21V 33/0096 (2013.01) [F04D 19/002 (2013.01); F04D 29/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A light-emitting fan, comprising:
a fan frame;
an impeller, comprising a light guiding hub and a plurality of blades, wherein the light guiding hub is rotatably disposed on the fan frame, the light guiding hub has an outer top surface, an outer annular surface, an inner annular surface, and at least one recess, the outer annular surface is connected to the outer top surface, the inner annular surface faces away from the outer annular surface, the plurality of blades are connected to the outer annular surface of the light guiding hub, the at least one recess is located at the inner annular surface so as to form at least one light guiding protrusion of the light guiding hub;
a circuit board, disposed on the fan frame; and
at least one first light-emitting component, disposed on the circuit board;
wherein light generated by the at least one first light-emitting component is emitted from the outer top surface through the at least one light guiding protrusion of the light guiding hub;
wherein the light-emitting fan further comprises a first light guide and a second light-emitting component, wherein the light guiding hub has at least one through hole, the first light guide is inserted into the at least one through hole of the light guiding hub, the second light-emitting component is disposed on the circuit board, and light generated by the second light-emitting component travels through the first light guide;
wherein the quantity of the at least one through hole is plural, the first light guide comprises a plate portion and a plurality of protrusion portions, the plurality of protrusion portions protrude from a side of the plate portion, the plurality of protrusion portions are respectively located in the through holes, a distance from the at least one first light-emitting component to an axis of the light guiding hub is greater than a distance from each of the plurality of protrusion portions to the axis of the light guiding hub.