White light bulb assembly using LED as a light source

• US 20060034077A1
• Filed: 08/10/2004
• Published: 02/16/2006
• Est. Priority Date: 08/10/2004
• Status: Abandoned Application

• Current Assignee: Tsu-Kang Chang
• Original Assignee: Tsu-Kang Chang
• Inventors: Chang, Tsu-Kang
• Application Number:
  US10/915,304
• Publication Number:
  US 20060034077A1
• Time in Patent Office: Days
• US Class Current: 362/227
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21S 9/032 the solar unit being separate from the lighting unit
• CPC Class Codes: F21V 21/0824 Ground spikes
• CPC Class Codes: F21V 3/02 characterised by the shape
• CPC Class Codes: F21V 5/00 Refractors for light sources characterised by cooling arrangements F21V29/504
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A white light bulb assembly includes a cylindrical body with an annular projection extending from a bottom face of the cylindrical body, a bulb covering securely mounted on top of the cylindrical body, and multiple light emitting diodes provided inside the bulb covering to electrically connect to the annular projection and a circuit board located inside the bulb covering. The bulb covering has multiple first grooves defined in an outer circumference of the bulb covering and multiple second grooves defined in an inner circumference of the bulb covering to reflect and refract light from the light emitting diodes. The first grooves intersect the second grooves in an angle so as to reinforce the reflection and refraction of light.

Claims

1. A white light bulb assembly comprising:

a cylindrical body with an annular projection extending from a bottom face of the cylindrical body;

a bulb covering securely mounted on top of the cylindrical body; and

multiple light emitting diodes provided inside the bulb covering to electrically connect to the annular projection and a circuit board located inside the bulb covering, the bulb covering having multiple first grooves defined in an outer circumference thereof and multiple second grooves defined in an inner circumference thereof to reflect and refract light from the light emitting diodes, the first grooves intersecting the second grooves in an angle.

2. The white light bulb assembly as claimed in claim 1, wherein the annular projection has a threading formed on an outer circumference of the annular projection.

3. The white light bulb assembly as claimed in claim 1, wherein the first grooves are longitudinally defined in the outer circumference of the bulb covering and the second grooves are latitudinally defined in the inner circumference of the bulb covering.

4. The white light bulb assembly as claimed in claim 2, wherein the first grooves are longitudinally defined in the outer circumference of the bulb covering and the second grooves are latitudinally defined in the inner circumference of the bulb covering.