EP2101106A1 - LED-Straßenlampe - Google Patents

LED-Straßenlampe Download PDF

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Publication number
EP2101106A1
EP2101106A1 EP08004618A EP08004618A EP2101106A1 EP 2101106 A1 EP2101106 A1 EP 2101106A1 EP 08004618 A EP08004618 A EP 08004618A EP 08004618 A EP08004618 A EP 08004618A EP 2101106 A1 EP2101106 A1 EP 2101106A1
Authority
EP
European Patent Office
Prior art keywords
led
road lamp
heat
lamp
green
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Withdrawn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
EP08004618A
Other languages
English (en)
French (fr)
Inventor
Yeh-Chin Chao
Hongqiu Deng
Lianshan Li
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.)
MarsLEDs Optoelectronics Co Ltd
Original Assignee
MarsLEDs Optoelectronics 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 MarsLEDs Optoelectronics Co Ltd filed Critical MarsLEDs Optoelectronics Co Ltd
Priority to EP08004618A priority Critical patent/EP2101106A1/de
Publication of EP2101106A1 publication Critical patent/EP2101106A1/de
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/08—Lighting devices intended for fixed installation with a standard
    • F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
    • F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • F21S8/04—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures
    • F21S8/06—Lighting devices intended for fixed installation intended only for mounting on a ceiling or the like overhead structures by suspension
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10—Outdoor lighting
    • F21W2131/103—Outdoor lighting of streets or roads
    • 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 a road lamp and, in particular, to a white-light LED lamp composed of red, green, and blue LED's.
  • LED illumination has the ability to replace traditional illumination devices.
  • Using LED for illumination has the advantages of high stability, no flashing, more colors, good color quality, and ease in controls.
  • As the LED is a point light source its illumination orientation can be readily adjusted. Therefore, using a light source with a specific lighting orientation for illumination can make better use of the optical energy emitted thereby. A smaller power is needed to achieve iocai-area illumination than the prior art. Therefore, a lot of energy can be saved.
  • the LED lamp has the features of high light-emitting efficiency, low power consumption, quick reaction speed, long lifetime, high security, and environment-friendly. They thus have a great potential to become substitute illumination devices on the market.
  • LED lamps all use white-light LED as the light sources.
  • they generally use high-power white-light LED (1 W or 2 W) as the light sources.
  • the light-emitting principle of white-light LED's is to use a blue-light chip with fluorescent powders thereon.
  • the brightness of blue-light chips is comparatively lower than LED chips of other colors.
  • the fluorescent powders have a large attenuation. Therefore, the white-light LED has a larger attenuation in brightness as well.
  • the heat generated by such a high-power LED is more than ordinary LED's.
  • the invention provides a white-light LED road lamp composed of red, green, and blue LED's.
  • red, green, and blue LED's By using high-luminosity red, green, and blue LED's to synthesize white or warm white light, the lifetime of the invention is longer than the high-power white-light LED's.
  • the brightness provided by the invention is 1.5 to 3 times better than the white-light LED's under the same power and other conditions.
  • This invention thus effectively solves the problem of large attenuation and heat production in the white-light LED's. It has a good energy-saving effect and longer lifetime.
  • the invention provides more colors because it uses the red, green, and blue LED's as the components of its light source.
  • the invention includes a road lamp body, a heat-dissipating element, a constant-current source, and an LED board.
  • the road lamp body is suspended at a specific height above the ground.
  • the bottom of the road lamp body is provided with the constant-current source to provide a stable electrical current.
  • a feature of the invention is that the LED board connected with the heat-dissipating element is disposed inside the road lamp body opposite to its opening.
  • One side surface of the LED board opposite to the heat-dissipating element is electrically connected with a plurality of red, green, and blue LED's. Each of the red, green, and blue LED's is connected in parallel to in series and driven by the constant-current source.
  • the preferred embodiment of the invention provides a white-light road lamp composed of red, green, and blue LED's.
  • the road lamp includes a road lamp body 1 , a heat-dissipating element 2 , a constant-current source 3 , and an LED board 4 .
  • the road lamp body 1 is suspended at a specific height above the ground.
  • the bottom of the road lamp body 1 facing the road has an opening 111 .
  • the heat-dissipating element 2 is disposed in the road lamp body 1 , corresponding to the opening 111.
  • the constant-current source 3 is disposed in the road lamp body 1 to provide a stable electrical current.
  • a feature of the invention is that the LED board 4 connected with the heat-dissipating element 2 is disposed inside the road lamp body 1 , opposite to its opening 111 .
  • One side surface of the LED board 4 opposite to the heat-dissipating element 2 is electrically connected with a plurality of red, green, and blue LED's 41 . Each of the red, green, and blue LED's 41 is connected in parallel to in series and driven by the constant-current source 3 .
  • the road lamp body 1 further has a lamp shell 11 and a lamp shade 12 .
  • the lamp shell 11 is suspended at a specific height above the ground by a lamp post 7 .
  • the bottom of the lamp shell 11 corresponding to the road is formed with the opening 111 .
  • the constant-current source 3 and the LED board 4 are disposed in the lamp shell 11 .
  • the LED's 41 on the LED board 4 correspond to the opening 111 .
  • the heat-dissipating element 2 is disposed on the outer side of the lamp shell 11 and corresponding to the LED board 4 .
  • LED board 4 On the side surface of the LED board 4 opposite to the LED's 41 is covered with ointment-like heat-conductive silicon resin and soft heat-conductive silicon film 5 connecting to the heat-dissipating element 2 .
  • Each of the LED's 41 is electrically connected with the LED board 4 by soldering.
  • a lamp shade 12 is disposed above the heat-dissipating element 2 .
  • a piece of sand-blasted glass 6 is disposed at the opening 111 of the lamp shell 11 .
  • the red, green, and blue LED's on the LED board 4 are evenly distributed.
  • the red LED emits light of wavelength between 610 nm and 640 nm.
  • the green LED emits light of wavelength between 510 nm and 540 nm.
  • the blue LED emits light of wavelength between 450 nm and 480 nm. According to the wavelengths and currents of the LED's with different colors, the brightness of them is adjusted to produce white or warm white light.
  • the ratio of individual colors fall in the range 2 ⁇ 4 : 5 ⁇ 7 : 0.5 ⁇ 2. In a preferred embodiment, the brightness ratio among the red, green, and blue light is 3 : 6 : 1.
  • the disclosed LED is equipped with a lens that has an elliptical light-emitting surface so as to produce an elliptical light shape.
  • a lens that has an elliptical light-emitting surface so as to produce an elliptical light shape.
  • LED light source of power 80 W its central luminosity at 10 meters away is greater than 42 Lux. The light covers an elliptical area, very suitable for road illumination.
  • the LED board is connected with the heat-dissipating element via the ointment-like heat-conductive silicon resin and the soft heat-conductive silicon film, the heat produced by the LED's can be easily removed.
  • the sand-blasted glass is utilized to perform a second color mixing, so that the homogeneity of emitted light is better.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP08004618A 2008-03-12 2008-03-12 LED-Straßenlampe Withdrawn EP2101106A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP08004618A EP2101106A1 (de) 2008-03-12 2008-03-12 LED-Straßenlampe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08004618A EP2101106A1 (de) 2008-03-12 2008-03-12 LED-Straßenlampe

Publications (1)

Publication Number Publication Date
EP2101106A1 true EP2101106A1 (de) 2009-09-16

Family

ID=39590938

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08004618A Withdrawn EP2101106A1 (de) 2008-03-12 2008-03-12 LED-Straßenlampe

Country Status (1)

Country Link
EP (1) EP2101106A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2306787A2 (de) 2009-09-29 2011-04-06 Zanotta, M Patrizia Verfahren zur Steuerung einer Strassenlampe oder einer Innenbeleuchtung für die Kompensation des Umgebungslichtes
CN102518995A (zh) * 2011-12-16 2012-06-27 福建德泓勤上光电科技有限公司 多功能led节能路灯
CN102606959A (zh) * 2012-03-14 2012-07-25 泰州市华强照明器材有限公司 一种led路灯
CN102705764A (zh) * 2010-12-19 2012-10-03 西安智海电力科技有限公司 一种带吊链和凹槽的匀光散热型光电分离led吊灯
WO2014161417A1 (zh) * 2013-04-01 2014-10-09 深圳市耀嵘科技有限公司 一种散热器及led泛光灯

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002101285A1 (en) * 2001-06-08 2002-12-19 Advanced Leds Limited Exterior luminaire
US6676279B1 (en) * 1999-10-04 2004-01-13 David A. Hubbell Area lighting device using discrete light sources, such as LEDs
DE20317444U1 (de) * 2002-11-15 2004-02-26 Bartenbach, Christian, Ing., Aldrans Beleuchtungsvorrichtung, insbesondere für Straßen, Wege, Plätze o.dgl.
DE202006010949U1 (de) * 2006-07-14 2006-09-07 Chen, Chia-Yi, Donggang Leuchte
US20070081338A1 (en) * 2005-10-06 2007-04-12 Thermalking Technology International Co. Illumination device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6676279B1 (en) * 1999-10-04 2004-01-13 David A. Hubbell Area lighting device using discrete light sources, such as LEDs
WO2002101285A1 (en) * 2001-06-08 2002-12-19 Advanced Leds Limited Exterior luminaire
DE20317444U1 (de) * 2002-11-15 2004-02-26 Bartenbach, Christian, Ing., Aldrans Beleuchtungsvorrichtung, insbesondere für Straßen, Wege, Plätze o.dgl.
US20070081338A1 (en) * 2005-10-06 2007-04-12 Thermalking Technology International Co. Illumination device
DE202006010949U1 (de) * 2006-07-14 2006-09-07 Chen, Chia-Yi, Donggang Leuchte

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2306787A2 (de) 2009-09-29 2011-04-06 Zanotta, M Patrizia Verfahren zur Steuerung einer Strassenlampe oder einer Innenbeleuchtung für die Kompensation des Umgebungslichtes
CN102705764A (zh) * 2010-12-19 2012-10-03 西安智海电力科技有限公司 一种带吊链和凹槽的匀光散热型光电分离led吊灯
CN102705764B (zh) * 2010-12-19 2015-06-03 西安智海电力科技有限公司 一种带吊链和凹槽的匀光散热型光电分离led吊灯
CN102518995A (zh) * 2011-12-16 2012-06-27 福建德泓勤上光电科技有限公司 多功能led节能路灯
CN102606959A (zh) * 2012-03-14 2012-07-25 泰州市华强照明器材有限公司 一种led路灯
WO2014161417A1 (zh) * 2013-04-01 2014-10-09 深圳市耀嵘科技有限公司 一种散热器及led泛光灯

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