| US 7,562,414 B2 | ||
| Dust sensing unit for use in vacuum cleaner | ||
| Jang-keun Oh, Gwangju (Korea, Republic of); Min-ha Kim, Gwangju (Korea, Republic of); Jin-gon Lee, Gwangju (Korea, Republic of); Jung-gyun Han, Gwangju (Korea, Republic of); and Seung-yong Cha, Gwangju (Japan) | ||
| Assigned to Samsung Gwangju Electronics Co., Ltd., Gwangju (Korea, Republic of) | ||
| Filed on Sep. 25, 2007, as Appl. No. 11/903,966. | ||
| Claims priority of application No. 10-2007-0035434 (KR), filed on Apr. 11, 2007. | ||
| Prior Publication US 2008/0250599 A1, Oct. 16, 2008 | ||
| Int. Cl. A47L 9/28 (2006.01) | ||
| U.S. Cl. 15—339 [15/319] | 15 Claims |
| 1. A dust sensing unit for use in a vacuum cleaner, comprising:
a body having an air flowing passage therein to move air laden with dust or dirt drawn in through a suction nozzle;
a detecting sensor disposed on the air flowing passage of the body to detect whether the dust or dirt passes through the air
flowing passage;
a lamp part to operate according to a signal outputted from the detecting sensor;
a rotating part disposed in the body and being configured to rotate by air drawn in through a suction nozzle and through the
air flowing passage; and
an electric generator rotated by the rotating part to generate an electric power, wherein the body is disposed between the
suction nozzle and a cleaner body, and the electric generator supplies the electric power to at least one of the detecting
sensor and the lamp part, wherein the rotating part is disposed, so that a portion of the rotating part is disposed to project
into the air flowing passage.
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