Vacuum cleaner nozzle having rotatable brush

• US 10,638,904 B2
• Filed: 02/12/2018
• Issued: 05/05/2020
• Est. Priority Date: 02/20/2017
• Status: Active Grant

• Current Assignee: Versuni Holding BV
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Kleine-Doepke, Bastian Cornelis, Van Der Wal, Paul
• Primary Examiner(s): Scruggs, Robert J
• Application Number:
  US16/336,734
• Publication Number:
  US 20190357746A1
• Time in Patent Office: 813 Days
• CPC Class Codes: A46B 13/001 Cylindrical or annular brush bodies
• CPC Class Codes: A46B 15/0036 with a lighting means, e.g. laser, bulb A46B15/0034 takes precedence
• CPC Class Codes: A46B 2200/3033 Household brush, i.e. brushes for cleaning in the house or dishes
• CPC Class Codes: A47L 9/0477 Rolls
• CPC Class Codes: A47L 9/2805 Parameters or conditions being sensed
• CPC Class Codes: A47L 9/2831 Motor parameters, e.g. motor load or speed
• CPC Class Codes: A47L 9/2836 characterised by the parts which are controlled
• CPC Class Codes: A47L 9/2847 Surface treating elements
• CPC Class Codes: A47L 9/30 Arrangement of illuminating devices

Abstract

A vacuum cleaner nozzle (N) comprising a rotatable brush (B) having a light distribution mechanism for distributing light from the rotatable brush (B), a transparent screen (S) through which a user can see the rotatable brush (B), and a drive unit for rotating the rotatable brush (B). The light distribution mechanism may have a plurality of lighting positions (L) on the rotatable brush (B). The light distribution mechanism may have a plurality of light sources distributed over a surface of the rotatable brush (B). The light distribution mechanism may have a light guide (LG) inside the rotatable brush (B), from which light escapes at the plurality of lighting positions (L), and may further have a light source (LED) for applying light to the light guide (LG). Alternatively, the light distribution mechanism has a plurality of mirrors at the lighting positions (L). The vacuum cleaner nozzle (N) may further have a sensor for measuring a rotation speed of the rotatable brush (B), and a controller for controlling the light distributed from the rotatable brush (B) in dependence on the rotation speed. The vacuum cleaner nozzle (N) can be applied in a vacuum cleaner further having a dirt collecting unit for collecting dirt.

Claims

1. A vacuum cleaner nozzle comprising:

a rotatable brush comprising a light distribution mechanism for distributing light from the rotatable brush;

a transparent screen through which a user can see the rotatable brush; and

a drive unit for rotating the rotatable brush;

wherein

a sensor for measuring a rotation speed of the rotatable brush, and

a controller for controlling the light distributed from the rotatable brush in dependence on the rotation speed of the rotatable brush.

2. A vacuum cleaner nozzle as claimed in claim 1, wherein the light distribution mechanism includes a plurality of lighting positions on the rotatable brush.

3. A vacuum cleaner nozzle as claimed in claim 2, wherein the light distribution mechanism includes a plurality of light sources distributed over a surface of the rotatable brush.

4. A vacuum cleaner nozzle as claimed in claim 2, wherein the light distribution mechanism includes a light guide inside the rotatable brush, from which light escapes at the plurality of lighting positions.

5. A vacuum cleaner nozzle as claimed in claim 4, further comprising a light source for applying light to the light guide.

6. A vacuum cleaner nozzle as claimed in claim 2, wherein the light distribution mechanism includes a plurality of mirrors at the lighting positions.

7. A vacuum cleaner nozzle as claimed in claim 1, further comprising a dust sensor, and the controller is further arranged for controlling the light distributed from the rotatable brush in dependence on the dust.

8. Vacuum cleaner comprising:

a vacuum cleaner nozzle as claimed in claim 1, and

a dirt collecting unit for collecting dirt.

9. A vacuum cleaner nozzle as claimed in claim 1, wherein the sensor for measuring the rotation speed of the rotatable brush comprises a sensor for measuring a rotational position of the rotatable brush.