GB2460703A - Light-transmittable cover for a light emitting diode bulb - Google Patents

Light-transmittable cover for a light emitting diode bulb Download PDF

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Publication number
GB2460703A
GB2460703A GB0810494A GB0810494A GB2460703A GB 2460703 A GB2460703 A GB 2460703A GB 0810494 A GB0810494 A GB 0810494A GB 0810494 A GB0810494 A GB 0810494A GB 2460703 A GB2460703 A GB 2460703A
Authority
GB
United Kingdom
Prior art keywords
light
emitting diode
bulb
transmittable cover
reflective layer
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Withdrawn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
GB0810494A
Other versions
GB0810494D0 (en
Inventor
Yu-Chen Chang
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 GB0810494A priority Critical patent/GB2460703A/en
Publication of GB0810494D0 publication Critical patent/GB0810494D0/en
Publication of GB2460703A publication Critical patent/GB2460703A/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Withdrawn legal-status Critical Current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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings
    • 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
    • F21Y2101/00—Point-like light sources
    • F21Y2101/02—
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Led Device Packages (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

A light-transmittable cover for a light-emitting diode bulb is provided on a bulb adaptor having at least one light-emitting diode and covers the light-emitting diode. The light-transmittable cover comprises a reflective layer on an outside surface of a top thereof to reflect the light emitted from the light-emitting diode to an area where the light-emitting diode cannot reach.

Description

LIGHT-TRANSMITTABLE COVER FOR A LIGHT-EMITTING DIODE
BULB
BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a lamp cover, and more particularly to a light-transmittable cover for a light-emitting diode bulb.
Description of the Prior Art
As compared with tungsten lamps, the light-emitting diodes have the advantages of high brightness, low temperature. It is obvious that the light-emitting diodes are better than the tungsten lamps in practicality. However, the tungsten lamps have been widely used, so if they were completely replaced by the light-emitting diodes, it would cost a lot of money.
Hence, a technology (such as high power light-emitting diode lamp disclosed in Taiwan Pat. No. 095103608) which enables the LED to be compatible with the conventional bulb adaptor has been developed. Therefore, the light-emitting diodes can completely replace the conventional tungsten lamps with a lower cost.
However, the irradiation range (the illumination area) of the existing light-emitting diodes is limited to the front side of the light-emitting diode.
Because the lighting angle is too small, the emitting light cannot irradiate the rear side (such as the position of the bulb adaptor or the lamp cover) of the light-emitting diode.
The present invention has arisen to mitigate and/or obviate the afore-described disadvantages.
SUMMARY OF THE INVENTION
The primary objective of the present invention is to provide a light-transmittable cover for a light-emitting diode bulb, which utilizes a reflective layer to reflect the light emitted from the light-emitting diode to an area where a common light-emitting diode cannot reach, such as the bulb adaptor and its surrounding area.
In order to achieve the above objective, the light-transmittable cover is provided on a bulb adaptor having at least one light-emitting diode and covers the light-emitting diode. The light-transmittable cover comprises at least one reflective layer on an outside surface of the top thereof, and the reflective layer has a reflective surface located within an irradiation range of the light-emitting diode and reflects the light emitted from the light-emitting diode in a predetermined direction.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is a perspective view showing that a light-transmittable cover for a light-emitting diode bulb is provided on a bulb adaptor; Fig. 2 is cross-sectional view showing that the bulb of Fig. 1 is provided
onatablelamp;
Fig. 3 is a perspective view showing that the reflective layer of the present invention is ring-shaped in cross-section; Fig. 4 is a cross-sectional view showing that the bulb of Fig. 3 is provided on a ceiling lamp; Fig. 5 is a perspective view showing that the bulb adaptor in accordance with the present invention has a plurality of light-emitting diodes; Fig. 6 is a cross-sectional view showing that the bulb of Fig. 5 is provided on a ceiling lamp; Fig. 7 is a perspective view showing that the reflective layer in accordance with the present invention is ring-shaped in cross section and provided on the bulb adaptor having a plurality of light-emitting diodes; and Fig. 8 is a cross-sectional view showing that the bulb of Fig. 7 is provided on the ceiling lamp.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
The present invention will be clearer from the following description when viewed together with the accompanying drawings, which show, for purpose of illustrations only, the preferred embodiment in accordance with the present invention.
Referring to Fig. 1, a light-transmittable cover for a light-emitting diode bulb in accordance with a preferred embodiment of the present invention is provided on a bulb adaptor A. The bulb adaptor A is provided with a light-emitting diode B, and the light-transmittable cover 10 covers the light-emitting diode B. As shown in Fig, 2, the bulb is provided on a table lamp C. The light-transmittable cover 10 is provided with a molding surface 11 on an outside surface of a top thereof. The center of the molding surface 11 protrudes toward the bulb adaptor A, and the molding surface 11 includes a reflective layer 20. The reflective layer 20 can be a film-shaped structure formed by painting or plating, or it can be a sheet-shaped structure which is directly provided on the molding surface 11. The reflective layer 20 includes a reflective surface 21 adhered to the molding surface 11. The reflective surface 21 is located within the irradiation range of the light-emitting diode B in such a manner that the light emitted from the light-emitting diode B is projected on the reflective surface 21 of the reflective layer 20. By such arrangements, the light emitted from the light-emitting diode B can be reflected by the reflective surface 21 of the reflective layer 20 to an area where the light-emitting diode B cannot reach, such as the bulb adaptor A and its surrounding area.
Moreover, the light-transmittable cover 10 is adhered or screwed to the bulb adaptor A. In addition, the light-transmittable cover 10 can also be as shown in Fig. 3, and the reflective layer 20 is ring-shaped in cross section and located at the periphery of the molding surface 11. As shown in Fig. 4, the bulb is provided on a ceiling lamp D. The center of the molding surface 11 can transmit light, and the reflective surface 21 of the reflective layer 20 can reflect the light emitted from the light-emitting diode B. As shown in Fig. 5, such a light-transmittable cover 10 is applied to a bulb adaptor A having a plurality of light-emitting diodes B. The center of the molding surface 11 protrudes toward the bulb adaptor A, and the reflective layer 20 is round in cross section. As shown in Fig. 6, the bulb of Fig. 5 is provided on the table lamp C. In addition, as shown in Fig. 7, the reflective layer 20 is ring-shaped in cross section and located at the periphery of the molding surface 11, and the bulb of Fig. 7 is provided on the ceiling lamp D as shown in Fig. 8. The reflective surface 21 of the reflective layer 20 can be also used to reflect the light emitted form the light-emitting diodes to the bulb adaptor A and its surrounding area, offering the function of reflecting the light to an area where the light-emitting diode B cannot reach.
While we have shown and described various embodiments in accordance with the present invention, it is clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (14)

  1. WHAT IS CLAIMED IS: 1. A light-transmittable cover for a light-emitting diode bulb being provided on a bulb adaptor having at least one light-emitting diode and covering the light-emitting diode, wherein: the light-transmittable cover comprises a reflective layer on an outside surface of a top thereof, the reflective layer has a reflective surface located within an irradiation range of the light-emitting diode, and light emitted from the light-emitting diode is projected on the reflective surface and then will be reflected by the reflective surface.
  2. 2. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 1, wherein the light-transmittable cover is provided with a molding surface on the outside surface of the top thereof, the reflective layer is located on the molding surface, the reflective surface of the reflective layer is adhered to the molding surface, a center of the molding surface protrudes toward the bulb adaptor.
  3. 3. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 2, wherein the reflective layer is round in cross section.
  4. 4. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 2, wherein the reflective layer is ring-shaped in cross section and located at a periphery of the molding surface.
  5. 5. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 1, wherein the bulb adaptor includes a plurality of light-emitting diodes.
  6. 6. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 5, wherein the light-transmittable cover is provided with a molding surface on the outside surface of the top thereof, the reflective layer is located on the molding surface, and the reflective surface of the reflective layer is adhered to the molding surface, a center of the molding surface protrudes toward the bulb adaptor.
  7. 7. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 6, wherein the reflective layer is round in cross section.
  8. 8. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 6, wherein the reflective layer is ring-shaped in cross section and located at a periphery of the molding surface.
  9. 9. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 1, wherein the reflective layer is formed on the light-transmittable cover by painting.
  10. 10. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 1, wherein the reflective layer is formed on the light-transmittable cover by plating.
  11. 11. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 1, wherein the reflective layer is a sheet-shaped structure, which is directly provided on the light-transmittable cover.
  12. 12. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 1, the light-transmittable cover is adhered to the bulb adaptor.
  13. 13. The light-transmittable cover for a light-emitting diode bulb as claimed in claim 1, the light-transmittable cover is screwed to the bulb adaptor.
  14. 14. A light-transmittable cover for alight-emitting diode bulb substantially as hereinbefore described with reference to and as shown in the accompanying drawings.
GB0810494A 2008-06-07 2008-06-07 Light-transmittable cover for a light emitting diode bulb Withdrawn GB2460703A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0810494A GB2460703A (en) 2008-06-07 2008-06-07 Light-transmittable cover for a light emitting diode bulb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0810494A GB2460703A (en) 2008-06-07 2008-06-07 Light-transmittable cover for a light emitting diode bulb

Publications (2)

Publication Number Publication Date
GB0810494D0 GB0810494D0 (en) 2008-07-09
GB2460703A true GB2460703A (en) 2009-12-09

Family

ID=39638388

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0810494A Withdrawn GB2460703A (en) 2008-06-07 2008-06-07 Light-transmittable cover for a light emitting diode bulb

Country Status (1)

Country Link
GB (1) GB2460703A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011135151A1 (en) * 2010-04-29 2011-11-03 Investigacion Y Desarrollo De Led, S.L. Led light bulb
WO2012131108A1 (en) * 2011-04-01 2012-10-04 Ntl Lemnis Holding B.V. Light source, lamp, and method for manufacturing a light source
EP2679896A1 (en) * 2012-06-29 2014-01-01 Kabushiki Kaisha Toshiba Lighting device
CN103906968A (en) * 2011-11-07 2014-07-02 恩普乐股份有限公司 Lighting device
EP2752614A1 (en) * 2011-08-30 2014-07-09 Leeleds Lighting (Xiamen) Co., Ltd. Large-angle omnidirectional lighting led lamp
CN103968271A (en) * 2013-02-04 2014-08-06 鸿富锦精密工业（深圳）有限公司 LED illumination device
CN104110619A (en) * 2013-04-22 2014-10-22 基元高效科技有限公司 Wide-light-distribution lampshade and lamp with same

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5703719A (en) * 1997-01-17 1997-12-30 Chen; Judy Reflector road sign with self-provided light means
GB2340301A (en) * 1998-07-28 2000-02-16 Oxley Dev Co Ltd Side illuminating light emitting diode
GB2372091A (en) * 2001-02-09 2002-08-14 John Clayton Ruddick Hazard light or beacon with an optical element to control horizontal and vertical beam spread
EP1255306A2 (en) * 2001-05-04 2002-11-06 LumiLeds Lighting U.S., LLC Side emitting LED
EP1298382A1 (en) * 2001-09-28 2003-04-02 Osram-Sylvania Inc. Replaceable LED bulb with interchangeable lens optic
US20050063188A1 (en) * 2003-09-19 2005-03-24 Mattel, Inc. Multidirectional light emitting diode unit
US20060018122A1 (en) * 2004-07-23 2006-01-26 Negley Gerald H Reflective optical elements for semiconductor light emitting devices
JP2006324036A (en) * 2005-05-17 2006-11-30 Stanley Electric Co Ltd Led bulb for vehicular lamp
EP1970620A1 (en) * 2007-03-14 2008-09-17 Koninklijke Philips Electronics N.V. Illumination device

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5703719A (en) * 1997-01-17 1997-12-30 Chen; Judy Reflector road sign with self-provided light means
GB2340301A (en) * 1998-07-28 2000-02-16 Oxley Dev Co Ltd Side illuminating light emitting diode
GB2372091A (en) * 2001-02-09 2002-08-14 John Clayton Ruddick Hazard light or beacon with an optical element to control horizontal and vertical beam spread
EP1255306A2 (en) * 2001-05-04 2002-11-06 LumiLeds Lighting U.S., LLC Side emitting LED
EP1298382A1 (en) * 2001-09-28 2003-04-02 Osram-Sylvania Inc. Replaceable LED bulb with interchangeable lens optic
US20050063188A1 (en) * 2003-09-19 2005-03-24 Mattel, Inc. Multidirectional light emitting diode unit
US20060018122A1 (en) * 2004-07-23 2006-01-26 Negley Gerald H Reflective optical elements for semiconductor light emitting devices
JP2006324036A (en) * 2005-05-17 2006-11-30 Stanley Electric Co Ltd Led bulb for vehicular lamp
EP1970620A1 (en) * 2007-03-14 2008-09-17 Koninklijke Philips Electronics N.V. Illumination device

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011135151A1 (en) * 2010-04-29 2011-11-03 Investigacion Y Desarrollo De Led, S.L. Led light bulb
ES2378800A1 (en) * 2010-04-29 2012-04-18 Investigación Y Desarrollo De Led, S.L. Led light bulb
WO2012131108A1 (en) * 2011-04-01 2012-10-04 Ntl Lemnis Holding B.V. Light source, lamp, and method for manufacturing a light source
RU2617030C2 (en) * 2011-04-01 2017-04-19 Филипс Лайтинг Холдинг Б.В. Light source, lamp and method of making light source
US10648623B2 (en) 2011-04-01 2020-05-12 Signify Holding B.V. Light source, lamp, and method for manufacturing a light source
EP2752614A1 (en) * 2011-08-30 2014-07-09 Leeleds Lighting (Xiamen) Co., Ltd. Large-angle omnidirectional lighting led lamp
EP2752614A4 (en) * 2011-08-30 2014-12-10 Leeleds Lighting Xiamen Co Ltd Large-angle omnidirectional lighting led lamp
CN103906968A (en) * 2011-11-07 2014-07-02 恩普乐股份有限公司 Lighting device
EP2679896A1 (en) * 2012-06-29 2014-01-01 Kabushiki Kaisha Toshiba Lighting device
CN103968271A (en) * 2013-02-04 2014-08-06 鸿富锦精密工业（深圳）有限公司 LED illumination device
CN104110619A (en) * 2013-04-22 2014-10-22 基元高效科技有限公司 Wide-light-distribution lampshade and lamp with same
CN104110619B (en) * 2013-04-22 2016-10-05 基元高效科技有限公司 Wide luminous intensity distribution lampshade and there is the light fixture of wide luminous intensity distribution lampshade

Also Published As

Publication number Publication date
GB0810494D0 (en) 2008-07-09

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