| CPC F21V 33/0052 (2013.01) [F21V 3/0625 (2018.02); F21V 23/005 (2013.01); G06F 3/0362 (2013.01)] | 17 Claims |

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1. A scroll wheel module for a mouse, comprising:
a base plate;
a carriage coupled to the base plate, wherein the carriage defines a cradle space comprising a first side wall;
a scroll wheel, wherein the scroll wheel comprises:
a shaft defining a hollow interior;
a wheel rim comprising an outer layer and an inner layer coupled to the outer layer; and
a wheel web peripherally coupled to an inner side of the inner layer of the wheel rim, wherein the shaft axially passes through the wheel web;
a circuit board comprising a first leg and a second leg coupled with each other, wherein the first leg is coupled to the first side wall, and the second leg extends in the hollow interior of the shaft; and
one or more light emitting elements coupled to the second leg of the circuit board.
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