LED light bulb and its application in a desk lamp

• US 20050174769A1
• Filed: 12/09/2004
• Published: 08/11/2005
• Est. Priority Date: 02/20/2003
• Status: Abandoned Application

• Current Assignee: Gao Yong, Ya Wang
• Original Assignee: Gao Yong, Ya Wang
• Inventors: Yong, Gao, Wang, Ya
• Application Number:
  US11/007,625
• Publication Number:
  US 20050174769A1
• Time in Patent Office: Days
• US Class Current: 362/235
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21Y 2107/00 Light sources with three-dimensionally disposed light-generating elements
• CPC Class Codes: F21Y 2107/20 on convex supports or substrates, e.g. on the outer surface of spheres
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An LED light bulb includes a screw base, a shell formed by two halves of hemispherical shells connecting tightly in the middle and a number of LEDs distributed spherical symmetrically on a curved flexible PCB inside an inner front of the shell, where the LEDs are series or parallel connected and arranged, when working, to emit light evenly in all directions. The LED light bulb can be used in a desk lamp.

Claims

1. An LED light bulb comprising:

a screw base;

a shell formed by two halves of hemispherical shells connecting tightly in the middle;

and a number of LEDs distributed spherical symmetrically on a curved flexible PCB inside an inner front of the shell;

the LEDs being series or parallel connected and arranged, when working, to emit light evenly in all directions.

2. The LED light bulb as claimed in claim 1 including a PCB which is fixed to a curved frame wherein all the LEDs are soldered symmetrically to the PCB.

3. The LED light bulb as claimed in claim 2 including an AD/DC converter inside the shell, which converts alternating current to direct current that the LEDs work on.

4. The LED light bulb as claimed in claim 1 including an electronic dimmer inside the shell to adjust light brightness.

5. The LED light bulb as claimed in claim 4 wherein the dimmer includes a manual brightness modulating part of the dimmer, which is set on the surface of the shell in the form of a turn knob, a linear fader, a pair of digital up-and-down buttons, or a digital touch bar.

6. The LED light bulb as claimed in claim 1 including a negative oxygen ion generator inside the shell, which produces and sends out negative oxygen ions through one or more small round openings on the surface of the shell.

7. A desk lamp comprising:

an LED light bulb comprising;

a screw base;

a shell formed by two halves of hemispherical shells connecting tightly in the middle;

and a number of LEDs distributed spherical symmetrically on a curved flexible PCB inside an inner front of the shell;

the LEDs being series or parallel connected and arranged, when working, to emit light evenly in all directions

a lamp fixture;

and a lamp holder, to which the LED light bulb is connected at its screw base.

8. The desk lamp as claimed in claim 7 including an AD/DC converter and an electronic dimmer inside the shell of the LED light bulb.

9. The desk lamp as claimed in claim 7 including a negative oxygen ion generator inside the shell of the LED light bulb.

10. The desk lamp as claimed in claim 7 including an AD/DC converter which converts alternating current to direct current that the LEDs work on.

11. The desk lamp as claimed in claim 10 wherein the converter is mounted inside the base of the lamp.

12. The desk lamp as claimed in claim 7 including an electronic dimmer which is mounted inside the base of the lamp.

13. The desk lamp as claimed in claim 12 wherein a manual brightness modulating part of the dimmer is set on the top surface of the base of the lamp.

14. The desk lamp as claimed in claim 13 wherein the manual brightness modulating part of the dimmer is in the form of a turn knob.

15. The desk lamp as claimed in claim 13 wherein the manual brightness modulating part of the dimmer is in the form a pair of digital up-and-down buttons,

16. The desk lamp as claimed in claim 13 wherein the manual brightness modulating part of the dimmer is in the form of a digital touch bar.

17. The desk lamp as claimed in claim 7 wherein the electronic dimmer includes a linear fader.