Lights for surface cleaning devices

Abstract

Various illustrative surface cleaning devices and methods of using surface cleaning devices are provided. In an exemplary implementation, a surface cleaning device includes a light source configured to illuminate a surface being cleaned by the surface cleaning device to help show debris on the surface for cleaning. The light source is configured to emit blue light.

What is claimed is: 
     
         1 . A surface cleaning device, comprising:
 a cleaning head configured to be moved over a surface to be cleaned;   a lens at the cleaning head; and   a light at the cleaning head configured to emit blue light through the lens to illuminate the surface to be cleaned and to illuminate debris on the surface.   
     
     
         2 . The surface cleaning device of  claim 1 , wherein the blue light has a wavelength in a range of 400 nm to 494 nm. 
     
     
         3 . The surface cleaning device of  claim 2 , wherein a maximum current of the light is 700 mA. 
     
     
         4 . The surface cleaning device of  claim 2 , wherein a maximum current of the light is 350 mA. 
     
     
         5 . The surface cleaning device of  claim 1 , wherein the blue light has a wavelength in a range of 455 nm to 485 nm. 
     
     
         6 . The surface cleaning device of  claim 1 , further comprising an agitator at the cleaning head, the agitator being configured to rotate to agitate debris on the surface to be cleaned. 
     
     
         7 . The surface cleaning device of  claim 6 , wherein the cleaning head is configured to move in a forward direction over the surface to be cleaned;
 the agitator is located at a forward portion of the cleaning head; and   the light and the lens are located laterally of the agitator and at the forward portion of the cleaning head.   
     
     
         8 . The surface cleaning device of  claim 6 , further comprising an actuator configured to be actuated by a user and thereby cause the light to begin emitting the blue light and the agitator to begin rotating. 
     
     
         9 . The surface cleaning device of  claim 6 , further comprising a fluid reservoir configured to hold a cleaning fluid; and
 a fluid distributor configured to apply the cleaning fluid to the agitator and/or the surface to be cleaned.   
     
     
         10 . The surface cleaning device of  claim 6 , further comprising a motor configured to drive the rotation of the agitator; and
 a power supply configured to supply power to the light and to the motor.   
     
     
         11 . The surface cleaning device of  claim 1 , wherein the blue light is configured to illuminate a region on the surface to be cleaned;
 a first corner of the region is at the lens;   a first side of the region extends from the first corner to a second corner of the region, the second corner being located laterally outward of the cleaning head on a first side of the cleaning head;   the first side is at a first angle from a front surface of the cleaning head, the first angle being in a range of 120° to 140°;   a second side of the region extends from the first corner to a third corner of the region, the third corner being located laterally outward of the cleaning head on a second side of the cleaning head that is opposite to the first side of the cleaning head; and   the second side is at a second angle from the front surface of the cleaning head, the second angle being in a range of 1° to 25°.   
     
     
         12 . The surface cleaning device of  claim 1 , further comprising an upright section pivotally coupled to the cleaning head; and
 an actuator at the upright section, the actuator being configured to be actuated by a user and thereby cause the light to begin emitting the blue light.   
     
     
         13 . A surface cleaning device, comprising:
 a cleaning head configured to be moved over a surface to be cleaned;   an agitator at the cleaning head, the agitator being configured to rotate to agitate debris on the surface to be cleaned; and   a light at the cleaning head, the light being configured to emit blue light to illuminate a region on the surface to be cleaned;   wherein the blue light has a wavelength in a range of 400 nm to 494 nm;   a first side of the region extends from a first corner of the region to a second corner of the region, the second corner being located laterally outward of the cleaning head on a first side of the cleaning head;   the first side is at a first angle from a front surface of the cleaning head, the first angle being in a range of 120° to 140°;   a second side of the region extends from the first corner to a third corner of the region, the third corner being located laterally outward of the cleaning head on a second side of the cleaning head that is opposite to the first side of the cleaning head; and   the second side is at a second angle from the front surface of the cleaning head, the second angle being in a range of 1° to 25°.   
     
     
         14 . The surface cleaning device of  claim 13 , wherein the blue light has a wavelength in a range of 455 nm to 485 nm. 
     
     
         15 . The surface cleaning device of  claim 13 , wherein the first angle is in a range of 125° to 140°; and
 the second angle is in a range of 1° to 20°. 
 
     
     
         16 . The surface cleaning device of  claim 13 , wherein the first angle is in a range of 120° to 130°; and
 the second angle is in a range of 8° to 25°. 
 
     
     
         17 . The surface cleaning device of  claim 13 , further comprising a lens at the cleaning head;
 wherein the light is configured to emit the blue light through the lens; and   the first corner of the region is at the lens.   
     
     
         18 . The surface cleaning device of  claim 17 , wherein the light and the lens are located to one side of the agitator. 
     
     
         19 . The surface cleaning device of  claim 13 , wherein the region is located entirely forward of the agitator.