EP2077414A1 - LED bulb with an enlarged irradiation range by arranging LED elements in three-dimension - Google Patents

LED bulb with an enlarged irradiation range by arranging LED elements in three-dimension Download PDF

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Publication number
EP2077414A1
EP2077414A1 EP08000086A EP08000086A EP2077414A1 EP 2077414 A1 EP2077414 A1 EP 2077414A1 EP 08000086 A EP08000086 A EP 08000086A EP 08000086 A EP08000086 A EP 08000086A EP 2077414 A1 EP2077414 A1 EP 2077414A1
Authority
EP
European Patent Office
Prior art keywords
led
assembly
circuit board
housing
led elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08000086A
Other languages
German (de)
French (fr)
Inventor
Albert Stekelenburg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to EP08000086A priority Critical patent/EP2077414A1/en
Publication of EP2077414A1 publication Critical patent/EP2077414A1/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00—Globes; Bowls; Cover glasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/20—Light sources comprising attachment means
    • F21K9/23—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
    • F21K9/232—Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to light sources and more particularly to an LED (light-emitting diode) bulb with an enlarged irradiation range by arranging its LED elements in three-dimension.
  • LED lamps have advantages including longer life, less power consumption (i.e., more energy-efficient), and no special ballasts being required.
  • LED based light sources have gradually replace conventional incandescent lamps and fluorescent lamps as the dominant light sources in our daily life.
  • LED lamps employing a plurality of LEDs are commercially available.
  • the well known LED lamp suffers from a disadvantage.
  • these LEDs are arranged in two-dimension, i.e., on a plate.
  • light only directs toward one side of the plate.
  • side light is relatively weak.
  • a need for improvement exists.
  • the LED elements are arranged and shaped as an upwardly tapered tower, a tree, or a semi-sphere so as to diffuse light through the transparent bulb without being blocked.
  • an LED bulb in accordance with a preferred embodiment of the invention comprises a base 10, a housing 20, a bulb 30, and an LED assembly 40. Each component is discussed in detail below.
  • the base 10 is a well known device and is adapted to mount in an electrical socket.
  • the base 10 comprises a bottom contact 11 as, for example, positive terminal, a metallic element 13 formed of copper, the metallic element 13 being used as, for example, negative terminal, and an insulator 12 formed between the contact 11 and the metallic element 13 for preventing them from electrically contacting each other.
  • the hollow housing 20 is adapted to mount on the base 10.
  • an electrical circuit assembly 21 including well known elements such as a capacitor, a resistor, and diodes; two spaced conductors 22, 23 in which the conductor 22 interconnects the electrical circuit assembly 21 and the contact 11 and the conductor 23 interconnects the electrical circuit assembly 21 and the metallic element 13 respectively; and a circuit board 24 mounted on and electrically connected to the electrical circuit assembly 21.
  • the LED assembly 40 comprises a plurality of LED elements 41.
  • the LED assembly 40 is mounted on the circuit board 24 so that the LED elements 41 can be electrically connected to the circuit board 24.
  • the bulb 30 can be made of one of a variety of materials.
  • the bulb 30 is made of glass as to be clear or is frosted to diffuse the light.
  • the bulb 30 is mounted on a top edge of the housing 20 so as together with the housing 20 to receive the LED assembly 40, the electrical circuit assembly 21, and the circuit board 24.
  • the LED elements 41 are arranged in three-dimension.
  • the LED elements 41 may be arranged and shaped as an upwardly tapered tower (as shown), a tree, or a semi-sphere so as to diffuse light through the glass bulb 30 without being blocked. That is, light is diffused to an enlarged range for irradiation.

Abstract

An LED light source includes a housing having a base adapted to mount in an electrical socket; a circuit board received in the housing; an electrical circuit assembly received in the housing, the electrical circuit assembly being electrically connected to both the circuit board and the base; an LED assembly mounted on the circuit board, the LED assembly including a plurality of LED elements electrically connected to the circuit board; and a bulb mounted on an open end of the housing for enclosing the circuit board, the electrical circuit assembly, and the LED assembly, wherein the LED elements are arranged in three-dimension so as to irradiate an enlarged range. The LED elements may be arranged and shaped as a tapered tower, a tree, or a semi-sphere.

Description

    BACKGROUND OF THE INVENTION 1. Field of Invention
  • The invention relates to light sources and more particularly to an LED (light-emitting diode) bulb with an enlarged irradiation range by arranging its LED elements in three-dimension.
    • 2. Description of Related Art
  • LED lamps have advantages including longer life, less power consumption (i.e., more energy-efficient), and no special ballasts being required. Thus, LED based light sources have gradually replace conventional incandescent lamps and fluorescent lamps as the dominant light sources in our daily life.
  • Also, LED lamps employing a plurality of LEDs are commercially available. However, the well known LED lamp suffers from a disadvantage. In detail, these LEDs are arranged in two-dimension, i.e., on a plate. Thus, light only directs toward one side of the plate. As a result, side light is relatively weak. Thus, a need for improvement exists.
  • Also, there have been numerous suggestions in prior patents for LED based light sources. For example, U.S. Pat. No. 5,688,042 discloses an LED lamp and U.S. Pat. No. 7,086,767 discloses an LED bulb
    • SUMMARY OF THE INVENTION
  • It is therefore one object of the invention to provide an LED bulb having an enlarged irradiation range by arranging its LED elements in three-dimension.
  • In one aspect of the invention the LED elements are arranged and shaped as an upwardly tapered tower, a tree, or a semi-sphere so as to diffuse light through the transparent bulb without being blocked.
  • The above and other objects, features and advantages of the invention will become apparent from the following detailed description taken with the accompanying drawings.
    • BRIEF DESCRIPTION OF THE DRAWINGS
    • FIG. 1 is a side elevation of a preferred embodiment of LED bulb according to the invention;
    • FIG. 2 is a longitudinal sectional view of the LED bulb of FIG. 1; and
    • FIG. 3 is an exploded view of the LED bulb of FIG. 1.
    DETAILED DESCRIPTION OF THE INVENTION
  • Referring to FIGS. 1 to 3, an LED bulb in accordance with a preferred embodiment of the invention comprises a base 10, a housing 20, a bulb 30, and an LED assembly 40. Each component is discussed in detail below.
  • The base 10 is a well known device and is adapted to mount in an electrical socket. The base 10 comprises a bottom contact 11 as, for example, positive terminal, a metallic element 13 formed of copper, the metallic element 13 being used as, for example, negative terminal, and an insulator 12 formed between the contact 11 and the metallic element 13 for preventing them from electrically contacting each other.
  • The hollow housing 20 is adapted to mount on the base 10. Within the housing 20 there are provided an electrical circuit assembly 21 including well known elements such as a capacitor, a resistor, and diodes; two spaced conductors 22, 23 in which the conductor 22 interconnects the electrical circuit assembly 21 and the contact 11 and the conductor 23 interconnects the electrical circuit assembly 21 and the metallic element 13 respectively; and a circuit board 24 mounted on and electrically connected to the electrical circuit assembly 21.
  • The LED assembly 40 comprises a plurality of LED elements 41. The LED assembly 40 is mounted on the circuit board 24 so that the LED elements 41 can be electrically connected to the circuit board 24.
  • The bulb 30 can be made of one of a variety of materials. For example, the bulb 30 is made of glass as to be clear or is frosted to diffuse the light. The bulb 30 is mounted on a top edge of the housing 20 so as together with the housing 20 to receive the LED assembly 40, the electrical circuit assembly 21, and the circuit board 24.
  • The characteristic of the invention is that the LED elements 41 are arranged in three-dimension. For example, the LED elements 41 may be arranged and shaped as an upwardly tapered tower (as shown), a tree, or a semi-sphere so as to diffuse light through the glass bulb 30 without being blocked. That is, light is diffused to an enlarged range for irradiation.
  • While the invention herein disclosed has been described by means of specific embodiments, numerous modifications and variations could be made thereto by those skilled in the art without departing from the scope and spirit of the invention set forth in the claims.

Claims (4)

  1. An LED assembly for use with an LED light source, comprising a plurality of LED elements electrically connected together wherein the LED elements are arranged in three-dimension.
  2. An LED light source comprising:
    a housing having a base adapted to mount in an electrical socket;
    a circuit board received in the housing;
    an electrical circuit assembly received in the housing, the electrical circuit assembly being electrically connected to both the circuit board and the base;
    an LED assembly mounted on the circuit board, the LED assembly including a plurality of LED elements electrically connected to the circuit board; and
    a bulb mounted on an open end of the housing for enclosing the circuit board, the electrical circuit assembly, and the LED assembly,
    wherein the LED elements are arranged in three-dimension.
  3. The LED light source of claim 2, wherein the LED elements are arranged and shaped as a tapered tower.
  4. The LED light source of claim 2, wherein the LED elements are arranged and shaped as a tree.
EP08000086A 2008-01-04 2008-01-04 LED bulb with an enlarged irradiation range by arranging LED elements in three-dimension Withdrawn EP2077414A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08000086A EP2077414A1 (en) 2008-01-04 2008-01-04 LED bulb with an enlarged irradiation range by arranging LED elements in three-dimension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08000086A EP2077414A1 (en) 2008-01-04 2008-01-04 LED bulb with an enlarged irradiation range by arranging LED elements in three-dimension

Publications (1)

Publication Number Publication Date
EP2077414A1 true EP2077414A1 (en) 2009-07-08

Family

ID=39339884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08000086A Withdrawn EP2077414A1 (en) 2008-01-04 2008-01-04 LED bulb with an enlarged irradiation range by arranging LED elements in three-dimension

Country Status (1)

Country Link
EP (1) EP2077414A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011120862A1 (en) 2010-03-31 2011-10-06 Ledo Led Technologie Gmbh Led luminaire as a replacement for incandescent light bulbs

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688042A (en) 1995-11-17 1997-11-18 Lumacell, Inc. LED lamp
FR2771888A1 (en) * 1997-12-01 1999-06-04 Systemes Et D Audio Frequences Lamp with electroluminescent diodes
DE29817609U1 (en) * 1998-09-02 2000-01-13 Derksen Gabriele Illuminant
US6220722B1 (en) * 1998-09-17 2001-04-24 U.S. Philips Corporation Led lamp
US6525668B1 (en) * 2001-10-10 2003-02-25 Twr Lighting, Inc. LED array warning light system
US20030052599A1 (en) * 2001-09-14 2003-03-20 Hsueh-Feng Sun White light LED illumination apparatus
US20030090910A1 (en) * 2001-11-11 2003-05-15 Hsing Chen Light emitting diode lamp
US20040114367A1 (en) * 2002-12-13 2004-06-17 Jui-Tuan Li Light emitting diode light bulb
US20050207152A1 (en) * 2004-03-18 2005-09-22 Lighting Sciences, Inc. Lighting element using electronically activated light emitting elements and method of making same
US7086767B2 (en) 2004-05-12 2006-08-08 Osram Sylvania Inc. Thermally efficient LED bulb
WO2007115322A2 (en) * 2006-04-04 2007-10-11 Cao Group, Inc. Semiconductor light source for illuminating a physical space including a 3-dimensional lead frame

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5688042A (en) 1995-11-17 1997-11-18 Lumacell, Inc. LED lamp
FR2771888A1 (en) * 1997-12-01 1999-06-04 Systemes Et D Audio Frequences Lamp with electroluminescent diodes
DE29817609U1 (en) * 1998-09-02 2000-01-13 Derksen Gabriele Illuminant
US6220722B1 (en) * 1998-09-17 2001-04-24 U.S. Philips Corporation Led lamp
US20030052599A1 (en) * 2001-09-14 2003-03-20 Hsueh-Feng Sun White light LED illumination apparatus
US6525668B1 (en) * 2001-10-10 2003-02-25 Twr Lighting, Inc. LED array warning light system
US20030090910A1 (en) * 2001-11-11 2003-05-15 Hsing Chen Light emitting diode lamp
US20040114367A1 (en) * 2002-12-13 2004-06-17 Jui-Tuan Li Light emitting diode light bulb
US20050207152A1 (en) * 2004-03-18 2005-09-22 Lighting Sciences, Inc. Lighting element using electronically activated light emitting elements and method of making same
US7086767B2 (en) 2004-05-12 2006-08-08 Osram Sylvania Inc. Thermally efficient LED bulb
WO2007115322A2 (en) * 2006-04-04 2007-10-11 Cao Group, Inc. Semiconductor light source for illuminating a physical space including a 3-dimensional lead frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011120862A1 (en) 2010-03-31 2011-10-06 Ledo Led Technologie Gmbh Led luminaire as a replacement for incandescent light bulbs
DE102010013538A1 (en) 2010-03-31 2011-10-06 Ledo Led Technologie Gmbh LED light as light bulb substitute
US8733984B2 (en) 2010-03-31 2014-05-27 Ledo Led Technologie Gmbh LED luminaire as a replacement for incandescent light bulbs

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