EP2058580A1 - Lampe DEL à fort éclairage et faible consommation électrique - Google Patents

Lampe DEL à fort éclairage et faible consommation électrique Download PDF

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Publication number
EP2058580A1
EP2058580A1 EP07021852A EP07021852A EP2058580A1 EP 2058580 A1 EP2058580 A1 EP 2058580A1 EP 07021852 A EP07021852 A EP 07021852A EP 07021852 A EP07021852 A EP 07021852A EP 2058580 A1 EP2058580 A1 EP 2058580A1
Authority
EP
European Patent Office
Prior art keywords
base
power consumption
low power
high illumination
led lamp
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Withdrawn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
EP07021852A
Other languages
German (de)
English (en)
Inventor
Jeng-Fuh Lieu
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.)
CHUNTLON ENTERPRISE Co Ltd
Original Assignee
CHUNTLON ENTERPRISE Co Ltd
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 CHUNTLON ENTERPRISE Co Ltd filed Critical CHUNTLON ENTERPRISE Co Ltd
Priority to EP07021852A priority Critical patent/EP2058580A1/fr
Publication of EP2058580A1 publication Critical patent/EP2058580A1/fr
Withdrawn legal-status Critical Current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
    • F21V3/02—Globes; Bowls; Cover glasses characterised by the shape
    • 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
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
    • 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
    • F21Y2107/30—Light sources with three-dimensionally disposed light-generating elements on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
    • 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 LED (light-emitting diode) lighting devices and more particularly to an LED lamp with characteristics including low power consumption, high illumination, etc.
  • the energy saving lamp comprises a housing 10, a metallic element 11, and a light tube 12.
  • the metallic element 11 is provided on a bottom of the housing 10 and is adapted to insert into a socket having, for example, two prongs for inserting into an outlet for mounting the energy saving lamp on a fixed position (e.g., ceiling or wall). Power thus can be supplied to the energy saving lamp through the outlet and the metallic element 11.
  • the light tube 12 is provided on a top of the housing 10. Two ends of the light tube 12 are provided inside the housing 10 and the remaining portion thereof is shaped as a helix extending out of the top of the housing 10. By configuring as above, light rays emanated from the light tube 12 are adapted to provide illumination.
  • the conventional energy saving lamp can do less damage to the environment in the disposal stage as compared with the typical fluorescent lamp.
  • it still has the following drawbacks:
  • It is an object of the invention to provide a low power consumption high illumination LED lamp comprising a base; a metallic member on a bottom of the base and adapted to insert into a socket; an AC to DC converter disposed inside the base and being electrically connected to the metallic member; a heat sink formed of metal and disposed on a top of the base; at least one matrix shaped LED light array secured to a position outside the base and adjacent to the heat sink and electrically connected to the AC to DC converter, and a bulb having a peripheral edge secured to the top of the base and covering matrix shaped LED light array.
  • the lamp comprises a base 2, a metallic element 21, an AC to DC converter 22, a bulb 23, a circular plate shaped metal heat sink 29 having a plurality of spaced fins formed on one surface, and a plurality of matrix shaped LED light arrays 24.
  • a base 2 a metallic element 21, an AC to DC converter 22, a bulb 23, a circular plate shaped metal heat sink 29 having a plurality of spaced fins formed on one surface, and a plurality of matrix shaped LED light arrays 24.
  • the metallic element 21 is provided on a bottom of the base 2 and is adapted to insert into a socket installed on a fixed position (e.g., ceiling or wall).
  • a socket installed on a fixed position (e.g., ceiling or wall).
  • the lamp can be mounted on the ceiling or wall, and AC power can be supplied to the lamp through the socket and the metallic element 21.
  • the AC to DC converter 22 e.g., Universal 90-260V AC to 13V DC
  • the AC to DC converter 22 is electrically connected to the metallic element 21 for converting AC power supplied from the socket into DC having a predetermined voltage and power which are complied with the requirements of the matrix shaped LED light array 24.
  • the bulb 23 has a peripheral edge secured to an annular top edge of the base 2.
  • the bulb 23 is made of a transparent material or translucent plastic or acrylic.
  • the heat sink 29 is also provided inside the base 2 at a position that the surface of the heat sink 29 having the spaced fins is adjacent to the AC to DC converter 22.
  • the matrix shaped LED light arrays 24 are of rectangular and are fixed to a position adjacent to the other surface of the heat sink 29, which is opposite to the surface of the heat sink 29 having the spaced fins, and covered by the bulb 23.
  • the heat sink 29 is adapted to dissipate heat generated by the matrix shaped LED light arrays 24.
  • the matrix shaped LED light arrays 24 are thus well dissipated as compared with non-matrix shaped LED light arrays which may have generated heat concentrated on certain area, resulting in a lowering of light output or even no light output.
  • a plurality of surface slits 291 are provided on a bottom of the base 2 at positions adjacent to the metallic element 21 and corresponding to the fins of the heat sink 29. The slits 291 are adapted to dissipate the heat generated by the AC to DC converter 22 and the matrix shaped LED light arrays 24. The light rays emanated from the matrix shaped LED light arrays 24 are adapted to pass the bulb 23 for illumination.
  • the matrix shaped LED light array 24 has advantages of prolonged useful life, low power consumption, high illumination, being durable, being vibration-resistant, being sturdy, being mass-produced, being compact, and quick activation time.
  • the LED lamp thus is highly illuminated, environment friendly, and without drawbacks associated with the well known lighting devices.
  • the heat sink 29 not only can dissipate heat generated by the AC to DC converter 22 but also can lower temperature of the enabled matrix shaped LED light arrays 24. Large current of constant voltage can be supplied to the LED lamp of the invention. It is envisaged by the invention that the matrix shaped LED light arrays 24 as compared with non-matrix shaped LED light arrays can increase intensity of illumination by about 30%. As a result, the illumination effect is greatly increased.
  • the bulb shaped lamp can be redesigned as one having a lighting tube similar to that of a fluorescent lamp.
  • the LED lamp further comprises a bracket 25 of truncated pyramid shaped.
  • the matrix shaped LED light arrays 24 (only two are shown) are mounted on three side surfaces of the bracket 25. Hence, illuminating area and range of the matrix shaped LED light arrays 24 are greatly increased.
  • One end surface of the bracket 25 is fixed to a position adjacent to the other surface of the heat sink 29, which is opposite to the surface of the heat sink 29 having the spaced fins, and the other end surface thereof is disposed adjacent to a top point inside of the bulb 23.
  • the bracket 25 can also dissipate heat generated by the matrix shaped LED light arrays 24 to the heat sink 29.
  • the matrix shaped LED light array 24 is shaped as a square and is secured to a top of the base 2.
  • the bulb 23 is shaped as a dome. This can greatly decrease the size of the LED lamp.
  • the LED lamp is mounted directly below a ceiling with its emitted light directed toward all directions.
  • the matrix shaped LED light array 24 is comprised of a frame 241, a substrate 242, and a transparent cover 244.
  • the substrate 242 is provided on a bottom of the frame 241.
  • a plurality of LEDs 243 are provided on the substrate 242.
  • the LED 243 is adapted to emit blue or violet light.
  • the transparent cover 244 is provided on a top of the frame 241 and is formed of phosphorus. The phosphorus of the transparent board 244 can be excited when the LEDs 243 emit blue or violet light. As a result, a very bright light is rendered by the matrix shaped LED light arrays 24.
  • the matrix shaped LED light arrays 24 have an enhanced heat dissipation capability as compared with non-matrix shaped LED light arrays.
  • a large current of constant voltage can be supplied to the LED lamp of the invention. It is envisaged by the invention that the LED lamp can increase intensity of illumination by about 30% to 50%. As a result, a lamp of low power consumption, high illumination, and being environment friendly is effected by the invention.
  • a disc shaped mounting member 26 having a triangular center opening is fixed to a position adjacent to the other surface of the heat sink 29 not having the spaced fins, so that the bracket 25 is adapted to partially pass the mounting member 26 through the opening and is then fastened to the top of the base 2 adjacent to the other surface of the heat sink 29.
  • the matrix shaped LED light arrays 24 have projecting pins (not numbered) inserted into holes (not numbered) of the mounting member 26 and then electrically connected to the AC to DC converter 22.
  • An abutment disc 27 is provided between the mounting member 26 and the heat sink 29, and has projecting pins (not numbered) to be electrically interconnected the matrix shaped LED light arrays 24 and the AC to DC converter 22 for supplying DC current to the matrix shaped LED light arrays 24.
  • one end of the AC to DC converter 22 coupling to the metallic element 21 is an AC input terminal and the other end of the AC to DC converter 22 coupling to the abutment disc 27 is a DC output terminal.
  • the rated DC output voltage is in a range of 12.5V to 13.5V and has a luminance of 80 lumen per watt. Output power is 3 watt when only one matrix shaped LED light array 24 is used and output power is 9 watt when three matrix shaped LED light arrays 24 are used.
  • the heat sink 29 and the slits 291 can enhance the heat dissipation of the LED lamp. Large current of constant voltage can be supplied to the LED lamp for increasing intensity of illumination by about 30%.
  • a rim 28 is provided on a top edge of the base 2. The rim 28 has annular groove(s) matingly engaged with the bulb 23 for fastening the bulb 23 onto the base 2.
  • the low power consumption high illumination LED lamp of the invention has advantages of being vibration-resistant, being compact, quick activation time, being complied with the concept of environmental protection, without the drawbacks of low luminous flux, poor heat dissipation, and low performance of the well known energy saving lamp, and being protected by the bulb 23 for preventing the LED lamp from being damaged in package and delivery due to collision.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
EP07021852A 2007-11-10 2007-11-10 Lampe DEL à fort éclairage et faible consommation électrique Withdrawn EP2058580A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP07021852A EP2058580A1 (fr) 2007-11-10 2007-11-10 Lampe DEL à fort éclairage et faible consommation électrique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP07021852A EP2058580A1 (fr) 2007-11-10 2007-11-10 Lampe DEL à fort éclairage et faible consommation électrique

Publications (1)

Publication Number Publication Date
EP2058580A1 true EP2058580A1 (fr) 2009-05-13

Family

ID=39226968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07021852A Withdrawn EP2058580A1 (fr) 2007-11-10 2007-11-10 Lampe DEL à fort éclairage et faible consommation électrique

Country Status (1)

Country Link
EP (1) EP2058580A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011036102A1 (fr) * 2009-09-22 2011-03-31 Osram Gesellschaft mit beschränkter Haftung Dispositif d'éclairage, lampe équipée du dispositif d'éclairage et procédé pour fabriquer un dispositif d'éclairage
JP2011082132A (ja) * 2009-05-27 2011-04-21 Panasonic Corp 電球形ランプ及び照明装置
WO2011054853A1 (fr) * 2009-11-04 2011-05-12 Lightdesign Solutions Gmbh Lampe à led et unité d'éclairage employant cette lampe
GB2476693A (en) * 2009-12-31 2011-07-06 Unistar Opto Corp Light emitting diode (LED) based lighting device
CN102147068A (zh) * 2011-04-13 2011-08-10 东南大学 一种可替代紧凑型荧光灯的led灯

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6767111B1 (en) * 2003-02-26 2004-07-27 Kuo-Yen Lai Projection light source from light emitting diodes
US20050174769A1 (en) * 2003-02-20 2005-08-11 Gao Yong LED light bulb and its application in a desk lamp
US20050174780A1 (en) * 2004-02-06 2005-08-11 Daejin Dmp Co., Ltd. LED light
JP2006156187A (ja) * 2004-11-30 2006-06-15 Mitsubishi Electric Corp Ｌｅｄ光源装置及びｌｅｄ電球
US20060232974A1 (en) * 2005-04-15 2006-10-19 Taiwan Oasis Technology Co., Ltd. Light emitting diode illumination apparatus
EP1843080A2 (fr) * 2006-04-03 2007-10-10 Firma Ivoclar Vivadent AG Source de rayonnement semi-conductrice

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050174769A1 (en) * 2003-02-20 2005-08-11 Gao Yong LED light bulb and its application in a desk lamp
US6767111B1 (en) * 2003-02-26 2004-07-27 Kuo-Yen Lai Projection light source from light emitting diodes
US20050174780A1 (en) * 2004-02-06 2005-08-11 Daejin Dmp Co., Ltd. LED light
JP2006156187A (ja) * 2004-11-30 2006-06-15 Mitsubishi Electric Corp Ｌｅｄ光源装置及びｌｅｄ電球
US20060232974A1 (en) * 2005-04-15 2006-10-19 Taiwan Oasis Technology Co., Ltd. Light emitting diode illumination apparatus
EP1843080A2 (fr) * 2006-04-03 2007-10-10 Firma Ivoclar Vivadent AG Source de rayonnement semi-conductrice

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011082132A (ja) * 2009-05-27 2011-04-21 Panasonic Corp 電球形ランプ及び照明装置
WO2011036102A1 (fr) * 2009-09-22 2011-03-31 Osram Gesellschaft mit beschränkter Haftung Dispositif d'éclairage, lampe équipée du dispositif d'éclairage et procédé pour fabriquer un dispositif d'éclairage
WO2011054853A1 (fr) * 2009-11-04 2011-05-12 Lightdesign Solutions Gmbh Lampe à led et unité d'éclairage employant cette lampe
GB2476693A (en) * 2009-12-31 2011-07-06 Unistar Opto Corp Light emitting diode (LED) based lighting device
CN102147068A (zh) * 2011-04-13 2011-08-10 东南大学 一种可替代紧凑型荧光灯的led灯

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