US 11,732,883 B2
Hand held personal care device with a light system
Marinus Arnoldus Martinus Vugts, Beetsterzwaag (NL); Kam Hing Yau, Groningen (NL); Pascal Jean Henri Bloemen, Eindhoven (NL); Marc Alexander Pastoors, Gieten (NL); Daniele Solerio, Groningen (NL); Marcus Franciscus Eijkelkamp, Peize (NL); Sint Baron, De Knipe (NL); and Hendrik Klaas Paauw, Roden (NL)
Assigned to KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
Appl. No. 17/633,225
Filed by KONINKLIJKE PHILIPS N.V., Eindhoven (NL)
PCT Filed Aug. 13, 2020, PCT No. PCT/EP2020/072708
§ 371(c)(1), (2) Date Feb. 7, 2022,
PCT Pub. No. WO2021/032578, PCT Pub. Date Feb. 25, 2021.
Claims priority of application No. 19192540 (EP), filed on Aug. 20, 2019.
Prior Publication US 2022/0307681 A1, Sep. 29, 2022
Int. Cl. F21V 33/00 (2006.01); B26B 19/38 (2006.01); F21V 31/00 (2006.01); F21V 8/00 (2006.01); B26B 19/14 (2006.01)
CPC F21V 33/004 (2013.01) [B26B 19/388 (2013.01); B26B 19/3853 (2013.01); F21V 31/005 (2013.01); G02B 6/0068 (2013.01); B26B 19/14 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A hand held personal care device comprising:
a main housing arranged to be held by hand;
an operative unit connected to the main housing and adapted for carrying out a personal care operation to a body part of a user;
a light source; and
an optically transparent light guide having a light receiving surface, a light emitting surface, and a light guiding member, the light guiding member extending from the light receiving surface to the light emitting surface for guiding light from the light receiving surface to the light emitting surface;
wherein the light source is arranged in a watertight chamber of the main housing,
wherein the main housing includes an optically transparent wall portion arranged adjacent to the light source and bounding said watertight chamber, and
wherein the light guide is arranged outside said watertight chamber, said light receiving surface being arranged adjacent to said optically transparent wall portion in a position for receiving light from the light source via said optically transparent wall portion.