Back to results
US 2024/0198546 A1Published application
Shaving unit and electric shaver comprising the same
AssigneeKoninklijke Philips N.V.
InventorsNikolaj Vasiljevitsj ZJIROECHA, Jacob Willem KROON
Life of this patent
Estimating the term…
Abstract
A shaving unit and/or electric shaver having a lighting module for providing an optical heating function at a skin-contacting surface of the shaving unit. At least one aspect of the invention relates to a dual-phase control scheme for accelerated warming of a skin contacting surface by increasing an average optical power density for an initial time duration.
Claims15
An electric shaver comprising a shaving unit and a controller, wherein the shaving unit comprises:
- one or more hair-cutting units;
- a lighting module comprising one or more lighting elements and a skin-facing light output surface via which light generated by the lighting elements is exposed to skin during operation of the shaving unit, said light output surface being made from an optically transmissive material and being arranged for contacting the skin during operation of the shaving unit, and said lighting elements being arranged in thermally conductive contact with the light output surface via a thermally conductive pathway in the lighting module;
- and
- a supporting member supporting the one or more hair-cutting units and the lighting module;
- and wherein the controller is operatively coupled with the lighting module and adapted to control the lighting elements in a drive scheme comprising:
- an initial heat-up phase, triggered upon activation of the lighting module, in which the lighting elements are driven with an initial power setting until a predetermined temperature of the light output surface is reached;
- and
- an operational phase following the initial heat-up phase, in which the lighting elements are driven with an operational power setting such that the temperature of the light output surface is controlled to be maintained at the predetermined temperature;
- wherein a maximum power value of the operational power setting is lower than a power value of the initial power setting.
6 more elements
Dependencies are inferred from the claim text.