| 摘要 |
A casing ( 3 ), in which a plurality of conductive tracks are fixed, an operation element ( 5 ) which is arranged so as to be able to move in translation in the casing ( 3 ), a conductive dome-like member ( 51 ) which is arranged in the casing ( 3 ) and which is resiliently deformable under the action of the displacement of the operation element ( 5 ) between a first state and a second state of commutation, a light source ( 13 ) and at least two power supply tracks for the light source ( 13 ). The light source ( 13 ) is fixedly joined to the operation element ( 5 ), the operation element being provided with at least two contact elements ( 87 ) which connect, over the entire axial travel of the operation element ( 5 ) in the casing ( 3 ), the light source ( 13 ) to the respective power supply tracks.
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