Light irradiating toothbrush having multiple light sources arranged in alternation

Abstract

Provided is a light irradiating toothbrush, in which light sources, irradiating light having mutually different wavelengths, are arranged in alternation at the bottom of waveguide bristles so that light of different wavelengths give rise to constructive interference which strengthens the intensity of the irradiated light, and the height of the light sources are varied on the basis of the wavelength of the light irradiated therefrom so as to effectively transmit light of short wavelengths to the waveguide bristles, and light having mutually different wavelengths are transmitted by means of the waveguide bristles, thereby effectively transmitting the light to the mouth of a user.

1 . A light irradiating toothbrush comprising a grip and a head,
 wherein the head includes: brushing bristles made of at least one waveguide; and a light source unit disposed under the brushing bristles inside the head and including a plurality of light sources radiating light through the waveguides,   the light source unit includes a first light source radiating short-wavelength light and a second light source radiating long-wavelength light,   the plurality of light sources is a set of light sources including a first sub-set that includes at least one first light source radiating short-wavelength light, and a second sub-set that includes at least one second light source radiating long-wavelength light, and   the light sources of the light source unit are alternately arranged.   
     
     
         2 . The light irradiating toothbrush of  claim 1 , wherein the short-wavelength light is blue light and the long-wavelength light is red light. 
     
     
         3 . The light irradiating toothbrush of  claim 1 , wherein the light sources are arranged in the longitudinal direction of the head. 
     
     
         4 . The light irradiating toothbrush of  claim 1 , wherein the light sources are LEDs (Light-Emitting Diode) or laser diodes. 
     
     
         5 . The light irradiating toothbrush of  claim 1 , wherein the light source unit includes a first light source radiating short-wavelength light and a second light source radiating long-wavelength light, and
 the light sources are spaced at difference distances from the brushing bristles in accordance with the magnitudes of the wavelengths.   
     
     
         6 . The light irradiating toothbrush of  claim 1 , wherein the light source unit includes a first light source radiating short-wavelength light and a second light source radiating long-wavelength light, and
 the first light source is positioned closer to the brushing bristles more than the second light source.   
     
     
         7 . The light irradiating toothbrush of  claim 1 , wherein the brushing bristles made of waveguides are brushing bristles made of optical fibers. 
     
     
         8 . The light irradiating toothbrush of  claim 1 , wherein the light source unit further includes a substrate where the light sources are disposed, and the substrate has a white color. 
     
     
         9 . The light irradiating toothbrush of  claim 1 , further comprising a vibrating motor and a substrate where the light sources are disposed,
 wherein the substrate is composed of a first substrate and a second substrate, the first substrate is disposed in the grip, the second substrate is disposed in the head, the light source unit is disposed on the second substrate, the vibrating motor is connected to the second substrate, and the vibrating motor vibrates the second substrate.   
     
     
         10 . The light irradiating toothbrush of  claim 9 , further comprising a vibration attenuator at a joint of the first substrate and the second substrate. 
     
     
         11 . The light irradiating toothbrush of  claim 10 , wherein the vibration attenuator is made of a urethane material. 
     
     
         12 . The light irradiating toothbrush of  claim 1 , wherein the head further includes massaging bristles made of waveguides. 
     
     
         13 . The light irradiating toothbrush of  claim 12 , wherein the massaging bristles are formed by a bundle of a plurality of waveguides or a plurality of optical fibers. 
     
     
         14 . The light irradiating toothbrush of  claim 12 , wherein the massaging bristles further include capsules covering the massaging bristles. 
     
     
         15 . The light irradiating toothbrush of  claim 12 , wherein both or any one of the brushing bristles and the massaging bristles is disposed on a bristle plate, and the bristle plate is detachably attached to the head. 
     
     
         16 . The light irradiating toothbrush of  claim 1 , wherein the brushing bristles are coated with a metallic oxide catalyst or nano-metal. 
     
     
         17 . The light irradiating toothbrush of  claim 16 , wherein the metallic oxide catalyst is any one of TiO 2 , MnO 2 , and BaTiO 3 , or a mixture of two or more of TiO 2 , MnO 2 , and BaTiO 3 . 
     
     
         18 . The light irradiating toothbrush of  claim 16 , wherein the nano-metal is any one of nano-silver (Ag), nano-copper (Cu), nano-white gold (Pt), and nano-gold (Au), or a mixture of two of nano-silver (Ag), nano-copper (Cu), nano-white gold (Pt), and nano-gold (Au). 
     
     
         19 . The light irradiating toothbrush of  claim 1 , wherein the light irradiating toothbrush is supplied with power from a battery or through a USB. 
     
     
         20 . The light irradiating toothbrush of  claim 2 , wherein the light irradiating toothbrush is supplied with power from a battery or through a USB.