Electronic device for positioning light guiding element

An electronic device comprising:

• a first cover including a bottom;
• a first blocking rib formed on the bottom;
• a retaining panel extending from the bottom and spaced from the first blocking rib, the retaining panel comprising a hook at a distal end thereof;
• a second cover attached to the first cover;
• a second blocking rib formed on the second cover;
• a printed circuit board (PCB) positioned between the first and the second covers;
• a light source mounted on the PCB for emitting light;
• and
• a light guiding element comprising a flat panel and two sidewalls extending from the flat panel, the light guiding element retained between the first blocking rib and the retaining panel attached to the bottom;
• wherein the first sidewall comprises an end surface facing away from the panel, the hook engages with the end surface of the first sidewall for preventing the light guiding element from moving in a direction away from the bottom, the first blocking rib and the retaining panel abut against opposite sides of the light guiding element, the second sidewall includes an end surface facing away from the panel, the second blocking rib abuts against the end surface of the second sidewall, and the light guiding element is optically coupled to the light source and configured for transmitting the light emitted from the light source.