EP2325547A1 - Dispositif d'éclairage à DEL à 360 degrés - Google Patents

Dispositif d'éclairage à DEL à 360 degrés Download PDF

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Publication number
EP2325547A1
EP2325547A1 EP09174470A EP09174470A EP2325547A1 EP 2325547 A1 EP2325547 A1 EP 2325547A1 EP 09174470 A EP09174470 A EP 09174470A EP 09174470 A EP09174470 A EP 09174470A EP 2325547 A1 EP2325547 A1 EP 2325547A1
Authority
EP
European Patent Office
Prior art keywords
base plate
degree angle
copper base
led
illumination device
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Withdrawn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
EP09174470A
Other languages
German (de)
English (en)
Inventor
Chia-Cheng Chang
Rong-Ming 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 EP09174470A priority Critical patent/EP2325547A1/fr
Publication of EP2325547A1 publication Critical patent/EP2325547A1/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Withdrawn legal-status Critical Current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
    • 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
    • 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
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • 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
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • 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
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/60—Light sources with three-dimensionally disposed light-generating elements on stacked substrates
    • 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 present invention relates to a LED (light-emitting diode) illumination device and, more particularly, to a 360-degree angle LED illumination device capable of providing 360 degree illumination range and advantageous of having lower manufacturing cost and improved the thermal conductivity and heat dissipation capability in order to prolong the lifetime of the LED chips while having.
  • a plurality of LEDs are arranged on the same plane of a main body to form a conventional LED illumination device in order to provide wider illumination range and better illumination intensity.
  • LEDs light-emitting diodes
  • planar type LED illumination devices it is able to obtain 180-degree illumination range after the LEDs are driven.
  • 180-degree illumination range can be achieved by means of above LED arrangement, the practical illumination effect provided by above LED illumination devices is not ideal.
  • two planar type LED illumination devices are combined to form a new device, the illumination range of which is over 360 degrees.
  • the inventor had the motive to study and develop the present invention. After hard research and development, the inventor provides a 360-degree angle LED illumination device capable of providing 360-degree angle illumination range and advantageous in having lower manufacturing cost and having improved thermal conductivity and heat dissipation capability in order to prolong the lifetime of the LED chips in use.
  • An object of the present invention is to provide a 360-degree angle LED (light-emitting diode) illumination device, which is formed by arranging plural LED chips on the peripheries of a single copper base plate. Thereby, LED chips are able to illuminate in different angle ranges in order to achieve 360-degree angle illumination range.
  • Another object of the present invention is to provide a 360-degree angle LED illumination device, where the copper base plate is electroplated with a layer of silver thereon.
  • the thermal conductivity and heat dissipation capability can be improved in order to prolong the lifetime of the LED chips in use while keep manufacturing cost low.
  • the present invention provides a 360-degree angle LED illumination device comprising a copper base plate, a plurality of LED chips, and a flexible PCB circuit layer.
  • the copper base plate is electroplated with a layer of silver thereon.
  • the plurality of LED chips is provided on the peripheries of the copper base plate.
  • the flexible PCB circuit layer is provided on the peripheries of the copper base plate and electrically connected with the LED chips for controlling the LED chips. Accordingly, it is able to provide 360-degree angle illumination range and to improve the thermal conductivity and heat dissipation capability in order to prolong the lifetime of the LED chips in use effectively.
  • the copper base plate is preferably in octagonal shape and four lateral sides thereof are respectively provided with a LED chip.
  • Fig. 1 shows a perspective view of a first embodiment of a 360-degree angle LED illumination device of the present invention.
  • Fig. 2 shows a perspective view of a second embodiment of a 360-degree angle LED illumination device of the present invention.
  • Fig. 3 is a schematic view showing the use of the 360-degree angle LED illumination device in the second embodiment of the present invention.
  • the present invention discloses a 360-degree angle LED (light-emitting diode) illumination device comprising a copper base plate, a plurality of LED chips, and a flexible PCB circuit layer.
  • the plurality of LED chips is provided on the peripheries of the copper base plate.
  • the flexible PCB circuit layer is provided on the peripheries of the copper base plate and electrically connected with the LED chips for controlling the LED chips.
  • the 360-degree angle LED illumination device 1 comprises a copper base plate 10, four LED chips 12, four covers 14, and a flexible PCB circuit layer 16.
  • the copper base plate 10 is in octagonal shape and is electroplated with a layer of silver thereon for obtain optimal thermal conductivity and heat dissipation capability.
  • copper and silver are used as the material to solve the problem regarding thermal conductivity and heat dissipation.
  • the thermal conductivity coefficient of copper is 380W/m.K while the thermal conductivity coefficient of silver is 429W/m.K. Accordingly, silver has better thermal conductivity when compared with copper. However, copper is much cheaper than silver.
  • the copper is used as a core for thermal conductivity and heat dissipation and silver is electroplated on the surface of the core made of copper.
  • copper and silver are used to form an alloy whose thermal conductivity is between those of copper and silver. Accordingly, better thermal conductivity and hear dissipation capability can be achieved while the cost can be kept low.
  • the thermal conductivity coefficient of the copper base plate electroplated with a layer of silver is about 420W/m.K. That is, the thermal conductivity of the copper base plate electroplated with a layer of silver is almost the same with that of silver while the cost of the electroplated copper base plate is much cheaper than that of silver. Besides, in addition to the better thermal conductivity and hear dissipation capability, the silver electroplated on the copper base plate is also able to provide reflection effect that is beneficial to increase effective luminous flux.
  • LED chips are able to illuminate in different angle ranges. Therefore, it is able to obtain 360-degree angle illumination range and decrease dead angles effectively.
  • the flexible PCB circuit layer 16 is provided on the peripheries of the copper base plate 10 and electrically connected with the LED chips 12 for controlling the LED chips 12.
  • Figs.2 and 3 showing a second embodiment of the present invention.
  • the structure of the copper base plate 10' is altered.
  • the copper base plate 10' is further provided with a hole 104 centrally.
  • plural 360-degree angle LED illumination devices can be strung to form a new illumination devices. Accordingly, various illumination devices composed of plural 360-degree angle LED illumination devices can be formed in response to different requirements from consumers.
  • the present invention has following advantages:
  • the present invention can provide a 360-degree angle LED illumination device capable of providing 360-degree illumination range and advantageous in having improved the thermal conductivity and heat dissipation capability in order to prolong the lifetime of the LED chips in use while keeping the manufacturing cost low. It is new and can be put into industrial use.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Led Device Packages (AREA)
EP09174470A 2009-10-29 2009-10-29 Dispositif d'éclairage à DEL à 360 degrés Withdrawn EP2325547A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP09174470A EP2325547A1 (fr) 2009-10-29 2009-10-29 Dispositif d'éclairage à DEL à 360 degrés

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09174470A EP2325547A1 (fr) 2009-10-29 2009-10-29 Dispositif d'éclairage à DEL à 360 degrés

Publications (1)

Publication Number Publication Date
EP2325547A1 true EP2325547A1 (fr) 2011-05-25

Family

ID=41694782

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09174470A Withdrawn EP2325547A1 (fr) 2009-10-29 2009-10-29 Dispositif d'éclairage à DEL à 360 degrés

Country Status (1)

Country Link
EP (1) EP2325547A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8401682B2 (en) 2000-10-12 2013-03-19 Bose Corporation Interactive sound reproducing
WO2018091283A1 (fr) * 2016-11-15 2018-05-24 Philips Lighting Holding B.V. Dispositif d'éclairage, élément de dispositif d'éclairage et leurs procédés de production

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050146884A1 (en) * 2004-01-07 2005-07-07 Goodrich Hella Aerospace Lighting Systems Gmbh Light, particularly a warning light, for a vehicle
US20050168985A1 (en) * 2004-02-02 2005-08-04 Chen Chia Y. Light device having changeable light members
US20070081340A1 (en) * 2005-10-07 2007-04-12 Chung Huai-Ku LED light source module with high efficiency heat dissipation
US20080123340A1 (en) * 2006-11-27 2008-05-29 Mcclellan Thomas Light device having LED illumination and electronic circuit board in an enclosure
EP1937041A2 (fr) * 2006-12-21 2008-06-25 LG Electronics Inc. Carte de circuit imprimé, appareil électroluminescent en étant équipé et son procédé de fabrication
WO2009013771A1 (fr) * 2007-07-25 2009-01-29 Intav S.R.L. Dispositif d'éclairage, en particulier dispositif supplémentaire de signalisation lumineuse pour véhicules prioritaires de sauvetage et de secours
DE102008004799A1 (de) * 2007-12-14 2009-06-25 Hänsch Warnsysteme GmbH Rundumleuchte, vorzugsweise Rundumkennleuchte

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050146884A1 (en) * 2004-01-07 2005-07-07 Goodrich Hella Aerospace Lighting Systems Gmbh Light, particularly a warning light, for a vehicle
US20050168985A1 (en) * 2004-02-02 2005-08-04 Chen Chia Y. Light device having changeable light members
US20070081340A1 (en) * 2005-10-07 2007-04-12 Chung Huai-Ku LED light source module with high efficiency heat dissipation
US20080123340A1 (en) * 2006-11-27 2008-05-29 Mcclellan Thomas Light device having LED illumination and electronic circuit board in an enclosure
EP1937041A2 (fr) * 2006-12-21 2008-06-25 LG Electronics Inc. Carte de circuit imprimé, appareil électroluminescent en étant équipé et son procédé de fabrication
WO2009013771A1 (fr) * 2007-07-25 2009-01-29 Intav S.R.L. Dispositif d'éclairage, en particulier dispositif supplémentaire de signalisation lumineuse pour véhicules prioritaires de sauvetage et de secours
DE102008004799A1 (de) * 2007-12-14 2009-06-25 Hänsch Warnsysteme GmbH Rundumleuchte, vorzugsweise Rundumkennleuchte

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8401682B2 (en) 2000-10-12 2013-03-19 Bose Corporation Interactive sound reproducing
WO2018091283A1 (fr) * 2016-11-15 2018-05-24 Philips Lighting Holding B.V. Dispositif d'éclairage, élément de dispositif d'éclairage et leurs procédés de production

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