EP2933552A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
EP2933552A1
EP2933552A1 EP14165180.2A EP14165180A EP2933552A1 EP 2933552 A1 EP2933552 A1 EP 2933552A1 EP 14165180 A EP14165180 A EP 14165180A EP 2933552 A1 EP2933552 A1 EP 2933552A1
Authority
EP
European Patent Office
Prior art keywords
heat
lighting device
base
cap
substrate
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Withdrawn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
EP14165180.2A
Other languages
German (de)
English (en)
Inventor
Min-Hwa Chou
Yin-Chen Huang
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.)
DBM Reflex of Taiwan Co Ltd
Original Assignee
DBM Reflex of Taiwan 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 DBM Reflex of Taiwan Co Ltd filed Critical DBM Reflex of Taiwan Co Ltd
Priority to EP14165180.2A priority Critical patent/EP2933552A1/fr
Publication of EP2933552A1 publication Critical patent/EP2933552A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/49—Attachment of the cooling means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/194—Bayonet attachments
    • 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 lighting device, and more particularly to a lighting device for a vehicle lamp to provide a light-homogenizing effect.
  • a vehicle lamp has a seat, a conventional lighting device, and a lampshade.
  • a chamber is defined in the seat. An opening is formed in the seat and communicates with the chamber.
  • the conventional lighting device is mounted on the seat.
  • the lampshade is mounted on the seat and closes the opening of the seat.
  • the conventional lighting device has a base, a substrate, an LED module and a heat sink.
  • the substrate is mounted on the base.
  • the LED module is mounted on a distal end of the substrate and has a circuit board and an LED.
  • the circuit board is connected to the substrate.
  • the LED is mounted on the circuit board.
  • the heat sink is mounted on a side surface of the substrate.
  • Heat generated by the LED is conducted through the circuit board, the substrate and the heat sink in sequence to form a single heat dissipating path.
  • the heat dissipating efficiency of the conventional lighting device is not sufficient.
  • the present invention provides a lighting device to mitigate or obviate the aforementioned problems.
  • the main objective of the invention is to provide a lighting device with improved heat dissipating efficiency.
  • the lighting device for a vehicle lamp has a base, a substrate, a conducting rib and an LED module.
  • the substrate is mounted in the base.
  • the conducting rib is perpendicularly mounted on the base and has a first end, a second end, a first heat-dissipating surface, and a second heat-dissipating surface.
  • the second end is opposite to the first end and is connected to the base.
  • the second heat-dissipating surface is opposite to the first heat-dissipating surface.
  • the LED module is mounted on the first end of the conducting rib and extends out of the base, and is electrically connected to the substrate.
  • the lighting device is mounted in a vehicle lamp.
  • the LED module is mounted on the first end of the conducting rib to accurately correspond to a reflection space of a lamp seat of the vehicle lamp. Therefore, the light emitted from the LED module illuminates a reflecting surface of the lamp seat and is reflected by the reflecting surface to improve the light-homogenizing effect of the vehicle lamp. So the lighting device as described is suitable for various types of lamps and is in conformity with regulations of luminance and distribution of light pattern of vehicle lamps.
  • a lighting device in accordance with the present invention comprises a base 10, a substrate 20, a conducting rib 30 and an LED module 40.
  • the base 10 has a seat 11, a loading portion 15, a first cap 12, a second cap 13 and multiple protrusions 16.
  • the seat 11 has an inner space 14 formed therein.
  • the loading portion 15 is mounted around and protrudes transversely from the seat 11.
  • the first cap 12 and the second cap 13 are both mounted on the loading portion 15.
  • the protrusions 16 are formed on an outer surface of the seat 11.
  • the substrate 20 is mounted in the base 10 and is located at the inner space 14 of the seat 11.
  • the conducting rib 30 is perpendicularly mounted on the loading portion 15 of the base 10 and has a first end 31, a second end 32, a first heat-dissipating surface 33, and a second heat-dissipating surface 34.
  • the second end 32 is opposite to the first end 31 and is connected to the loading portion15 of the base 10.
  • the first heat-dissipating surface 33 is connected to the first cap 12.
  • the second heat-dissipating surface 34 is opposite to the first heat-dissipating surface 33 and is connected to the second cap 13.
  • the conducting rib 30 is made of copper or ceramics.
  • the LED module 40 is mounted on the first end 31 of the conducting rib 30, extends out of the base 10, and is electrically connected to the substrate 20.
  • the LED module 40 has a heat-conducting plate 41, at least one circuit board 42, and at least one LED 43.
  • the heat-conducting plate 41 is mounted on the first end 31 of the conducting rib 30 and has two sides.
  • Each circuit board 42 is mounted on one of the two sides of the heat-conducting plate 41 and is electrically connected to the substrate 20 by an electric wire 44.
  • Each LED 43 is mounted on and is connected electrically to a corresponding circuit board 42.
  • the LED module 40 has two circuit boards 42 mounted respectively on the two sides of the heat-conducting plate 41 and two LEDs 43 respectively mounted on the two circuit boards 42.
  • One of the ways to assemble the first and second caps 12, 13 is to use a screw 17 and a nut 18.
  • the screw 17 is inserted through the first cap 12, the conducting rib 30 and the second cap 13.
  • the nut 18 is fastened on the screw17.
  • the lighting device as described may have engaging units to assemble the first cap 12 with the second cap 13.
  • each cap 12a, 13a has multiple cooling grooves 121a, 131a to increase the heat dissipating areas of the lighting device as described.
  • the lighting device is mounted on a lamp seat having a reflecting surface via the protrusions 16 of the base 10.
  • a lampshade is mounted on the lamp seat.
  • the LED module 40 of the lighting device is inserted into a reflection space around the lamp seat. The light emitted from the at least one LED 43 of the lighting device as described illuminates the reflector and is reflected by the reflecting surface to be emitted out from the lampshade.
  • the heat generated by the at least one LED 43 of the LED module 40 is conducted to the conducting rib 30 through the circuit board 42 and the heat-conducting plate 41 in sequence.
  • the heat conducted to the conducting rib 30 is further conducted to the first cap 12 through the first heat-dissipating surface 33 to form a first heat dissipating path.
  • the heat conducted to the conducting rib 30 is further conducted to the second cap 13 through the second heat-dissipating surface 34 to form a second heat dissipating path.
  • the heat conducted to the first cap 12 and the second cap 13 can be further dissipated by convection.
  • the conducting rib 30 of the lighting device as described provides two heat dissipating paths to increase the heat dissipating efficiency.
  • the LED module 40 is mounted on the first end 31 of the conducting rib 30 to accurately correspond to a reflection space of a lamp seat of the vehicle lamp. The light emitted from the LED module 40 illuminates the reflecting surface of the lamp seat and is reflected by the reflecting surface to improve the light-homogenizing effect of the vehicle lamp. Therefore, the lighting device as described is in conformity with regulations of luminance and distribution of light pattern of vehicle lamps.

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)
EP14165180.2A 2014-04-17 2014-04-17 Dispositif d'éclairage Withdrawn EP2933552A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14165180.2A EP2933552A1 (fr) 2014-04-17 2014-04-17 Dispositif d'éclairage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14165180.2A EP2933552A1 (fr) 2014-04-17 2014-04-17 Dispositif d'éclairage

Publications (1)

Publication Number Publication Date
EP2933552A1 true EP2933552A1 (fr) 2015-10-21

Family

ID=50513079

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14165180.2A Withdrawn EP2933552A1 (fr) 2014-04-17 2014-04-17 Dispositif d'éclairage

Country Status (1)

Country Link
EP (1) EP2933552A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106594690A (zh) * 2016-11-07 2017-04-26 深圳市益科光电技术有限公司 灯具及其散热机构
WO2018082099A1 (fr) * 2016-11-07 2018-05-11 深圳市益科光电技术有限公司 Lampe et son mécanisme de dissipation de chaleur
WO2022180474A1 (fr) * 2021-02-25 2022-09-01 Osram Gmbh Lampe

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090002997A1 (en) * 2007-05-31 2009-01-01 Koester George H LED reflector lamp
US20090080187A1 (en) * 2007-09-25 2009-03-26 Enertron, Inc. Method and Apparatus for Providing an Omni-Directional Lamp Having a Light Emitting Diode Light Engine
US20100213809A1 (en) * 2007-09-19 2010-08-26 Osram Gesellschaft Mit Beschraenkter Haftung Headlamp and its use
DE102011005701A1 (de) * 2011-03-17 2012-09-20 Osram Ag Beleuchtungseinrichtung und Fahrzeugscheinwerfer mit Beleuchtungseinrichtung
US20130063935A1 (en) * 2010-05-24 2013-03-14 John E. Thrailkill Solid state lighting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090002997A1 (en) * 2007-05-31 2009-01-01 Koester George H LED reflector lamp
US20100213809A1 (en) * 2007-09-19 2010-08-26 Osram Gesellschaft Mit Beschraenkter Haftung Headlamp and its use
US20090080187A1 (en) * 2007-09-25 2009-03-26 Enertron, Inc. Method and Apparatus for Providing an Omni-Directional Lamp Having a Light Emitting Diode Light Engine
US20130063935A1 (en) * 2010-05-24 2013-03-14 John E. Thrailkill Solid state lighting device
DE102011005701A1 (de) * 2011-03-17 2012-09-20 Osram Ag Beleuchtungseinrichtung und Fahrzeugscheinwerfer mit Beleuchtungseinrichtung

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106594690A (zh) * 2016-11-07 2017-04-26 深圳市益科光电技术有限公司 灯具及其散热机构
WO2018082099A1 (fr) * 2016-11-07 2018-05-11 深圳市益科光电技术有限公司 Lampe et son mécanisme de dissipation de chaleur
CN106594690B (zh) * 2016-11-07 2019-11-22 深圳市益科光电技术有限公司 灯具及其散热机构
WO2022180474A1 (fr) * 2021-02-25 2022-09-01 Osram Gmbh Lampe

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