Cleaning Tool for Floor Surfaces Having an Illumination Element for a Working Area

Abstract

A vacuum cleaning tool for a vacuum cleaning device has a housing with a working chamber that has a bottom plate provided with a suction slot extending transversely to a working direction of the vacuum cleaning tool. The housing has a housing front wall facing in the working direction. The housing front wall has a receptacle, and an illumination element is arranged in the receptacle for illuminating a working surface of the vacuum cleaning tool. A light-permeable cover closes off the receptacle and covers the illumination element. The illumination element is a cold light lamp emitting cold light.

1 . A vacuum cleaning tool for a vacuum cleaning device, the vacuum cleaning tool comprising: 
 a housing comprising a working chamber having a bottom plate provided with a suction slot extending transversely to a working direction of the vacuum cleaning tool;    wherein the housing further has a housing front wall facing in the working direction;    wherein the housing front wall has a receptacle;    an illumination element arranged in the receptacle for illuminating a working surface of the vacuum cleaning tool;    a light-permeable cover closing off the receptacle and covering the illumination element;    wherein the illumination element is a cold light lamp emitting cold light.    
   
   
       2 . The vacuum cleaning tool according to  claim 1 , wherein the cold light lamp is a cold cathode lamp.  
   
   
       3 . The vacuum cleaning tool according to  claim 1 , wherein the cold light lamp comprises several ultra bright light emitting diodes (LEDs) having a luminous power of at least 2,000 millicandela.  
   
   
       4 . The vacuum cleaning tool according to  claim 1 , wherein the luminous power is greater than 5,000 millicandela.  
   
   
       5 . The vacuum cleaning tool according to  claim 1 , further comprising: 
 a printed circuit board support, wherein the cold light lamp is mounted on the printed circuit board support;    a casing in which the printed circuit board support with the cold light lamp mounted thereon is arranged;    wherein the cover, the casing, and the printed circuit board support with the cold light lamp form an illumination module.    
   
   
       6 . The vacuum cleaning tool according to  claim 5 , wherein the cover is an optical lens.  
   
   
       7 . The vacuum cleaning tool according to  claim 5 , wherein the illumination module has locking elements and the receptacle has counter locking elements, wherein the locking elements and the counter locking elements interact for securing the illumination module in the receptacle.  
   
   
       8 . The vacuum cleaning tool according to  claim 5 , wherein the illumination module has electrical contact elements connected to the illumination element, wherein the electrical contact elements penetrate a back wall of the receptacle and project into the housing where the electrical contact elements contact a voltage connector.  
   
   
       9 . The vacuum cleaning tool according to  claim 8 , wherein the contact elements and the voltage connector form a plug connection comprised of a plug and a socket, wherein one of the plug and the socket is arranged on the printed circuit board support and the other of the plug and the socket is arranged behind the back wall of the receptacle in the housing, viewed in direction of insertion of the illumination module into the receptacle.  
   
   
       10 . The vacuum cleaning tool according to  claim 8 , further comprising a drive unit arranged in a motor chamber of the housing, wherein the drive unit has a drive motor for driving in rotation a brush roller arranged in the working chamber, wherein the voltage connector is provided on the drive unit.  
   
   
       11 . The vacuum cleaning tool according to  claim 10 , further comprising a belt drive having a drive shaft connected by a coupling to a motor shaft of the drive motor so that torque is transmitted onto the drive shaft, wherein the coupling is a cardan-type coupling.  
   
   
       12 . The vacuum cleaning tool according to  claim 11 , wherein the coupling is a claw coupling having coupling elements engaging one another with minimal radial play or minimal axial play or both minimal radial and axial play.  
   
   
       13 . The vacuum cleaning tool according to  claim 10 , further comprising a vacuum connector that is connected to a housing section of the housing and is pivotable about a pivot axis, wherein an electrical supply cable for supplying electric power to the vacuum cleaning tool is guided through the housing section and the pivot axis into the motor chamber.  
   
   
       14 . The vacuum cleaning tool according to  claim 1 , further comprising a brush roller arranged in the working chamber, wherein the brush roller has ends that are rotatably supported in a bearing, respectively, wherein the bearings each are comprised of a substantially circular disk-shaped support plate and a bearing shaft end provided on the ends of the brush roller, respectively, wherein the bearing shaft ends engage the support plates, wherein the housing has substantially rectangular bearing receptacles and the support plates are inserted into the bearing receptacles, wherein a width of the bearing receptacles matches approximately a diameter of the support plates.  
   
   
       15 . The vacuum cleaning tool according to  claim 14 , wherein the support plates are comprised of an elastic material.  
   
   
       16 . The vacuum cleaning tool according to  claim 15 , wherein the support plates are comprised of a soft elastic material.  
   
   
       17 . The vacuum cleaning tool according to  claim 16 , wherein the support plates are comprised of rubber.  
   
   
       18 . The vacuum cleaning tool according to  claim 14 , wherein the bearing receptacle has a bottom matched to a circumferential contour of the support plate.