Portable telephone, diffuser and lighting device provided therein
View Patent ↗In a portable telephone including a plurality of input buttons 1 for inputting various indications, light emitting elements 7 which emit a light, when any one of the input buttons 1 is pushed on, diffusers 8 which are located under a plurality of input buttons 1 and which diffuse the light emitted from the light emitting element 7 , the diffuser 8 has an incidence portion 5 which has a receiving plane positioned near the light emitting elements 7 and receiving the light emitted from the light emitting elements 7 , and a projecting portion 6 which has a reflecting plane for reflecting the light received by the incidence portion 5 to an upper side of a plurality of input buttons 1.
1. A portable telephone comprising a plurality of input buttons for inputting various indications;
at least one light emitting element which emits a light, when any one of said a plurality of input buttons is pushed on; said light emitting located under said a plurality of input buttons any one of said plurality of buttons being a diffuser to diffuse said light emitted from said light emitting element;
said diffuser including:
an incidence portion which has a receiving plane positioned near said light emitting element and receiving said light emitted from said light emitting element; and
a projecting portion which has a reflecting plane for reflecting said light received by said incidence portion to an upper side of said a plurality of input buttons;
an illumination plane that transmits or reflects the light from the light emitting element:
a first transmission light directed onto the center of the incidence portion and transmitted through the illumination plane; and
a second transmission light reflected once on the illumination plane and thereafter transmitting through the illumination plane; and
a progressing light which progresses within said buttons by reflection or diffusion and transmits through said illumination plane at the projecting portion.
2. A portable telephone as claimed in claim 1 , wherein said receiving plane of said incidence portion is a part of an arc any portions of which has an equal distance from said light emitting element.
3. A portable telephone as claimed in claim 1 , wherein concave and convex are formed on a surface of said receiving plane of said incidence portion.
4. A portable telephone as claimed in claim 2 , wherein concave and convex are formed on a surface of said receiving plane of said incidence portion.
5. A portable telephone as claimed in claim 1 , wherein said light emitting element is a light emitting diode.
6. A portable telephone as claimed in claim 2 , wherein said light emitting element is a light emitting diode.
7. A portable telephone as claimed in claim 3 , wherein said light emitting element is a light emitting diode.
8. A portable telephone as claimed in claim 4 , wherein said light emitting element is a light emitting diode.