US 12,441,015 B2
Electric shaver
Nikolaj Vasiljevitsj Zjiroecha, Drachten (NL); and Jacob Willem Kroon, Leeuwarden (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 18/281,019
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Aug. 3, 2022, PCT No. PCT/EP2022/071827
§ 371(c)(1), (2) Date Sep. 8, 2023,
PCT Pub. No. WO2023/036524, PCT Pub. Date Mar. 16, 2023.
Claims priority of application No. 21195710 (EP), filed on Sep. 9, 2021.
Prior Publication US 2024/0198546 A1, Jun. 20, 2024
Int. Cl. B26B 21/48 (2006.01); B26B 19/38 (2006.01); B26B 19/46 (2006.01)
CPC B26B 21/48 (2013.01) [B26B 19/388 (2013.01); B26B 19/46 (2013.01)] 15 Claims
OG exemplary drawing
 
1. 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 two phases:
an initial heat-up phase, triggered upon activation of the lighting module, in which the lighting elements are provided 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 provided with an operational power setting such that the temperature of the light output surface is controlled to be maintained at the predetermined temperature; and
wherein a maximum power value of the operational power setting is lower than a power value of the initial power setting.