EP2191192A2 - Lampe électrique comportant une diode luminescente et un réflecteur de lampe - Google Patents

Lampe électrique comportant une diode luminescente et un réflecteur de lampe

Info

Publication number
EP2191192A2
EP2191192A2 EP08807091A EP08807091A EP2191192A2 EP 2191192 A2 EP2191192 A2 EP 2191192A2 EP 08807091 A EP08807091 A EP 08807091A EP 08807091 A EP08807091 A EP 08807091A EP 2191192 A2 EP2191192 A2 EP 2191192A2
Authority
EP
European Patent Office
Prior art keywords
heat
conducting means
component
led
power led
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Withdrawn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
EP08807091A
Other languages
German (de)
English (en)
Inventor
Otto Flach
Georg Jenner
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.)
Ansorg GmbH
Original Assignee
Ansorg GmbH
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 Ansorg GmbH filed Critical Ansorg GmbH
Publication of EP2191192A2 publication Critical patent/EP2191192A2/fr
Withdrawn legal-status Critical Current

Links

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
    • 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 an electric lamp using a high-power LED (hereinafter abbreviated to LED for the most part) and the problem of dissipating the heat generated by the LED during operation.
  • a high-power LED hereinafter abbreviated to LED for the most part
  • LEDs have long been used mainly as indicator lights in seven-segment and dot matrix displays due to low light output and the lack of availability of white emitting LEDs. In the course of development, the light output has been increased considerably, so that high-performance LEDs are now available as lamps for electric lights.
  • Electric lights that have a high-power LED as a light source, which receive an operating current up to 1 A, are known.
  • a considerable amount of equipment is required so far to dissipate the heat generated during operation of the LED, otherwise the LED would fall sharply or be destroyed in the light output.
  • Heat dissipation from the LED has hitherto been via active elements, e.g. by means of a fan or a closed cooling circuit, or passive elements, e.g. the luminaire housing, heat sinks or power lines and is well known in lighting technology.
  • active elements e.g. by means of a fan or a closed cooling circuit
  • passive elements e.g. the luminaire housing, heat sinks or power lines and is well known in lighting technology.
  • Another object of the invention is also to make the power supply of the LED as simple as possible.
  • the measures for the efficiently realized cooling of the LED and its power supply are aimed at being able to produce the electric light as much as possible in a space-saving and cost-saving manner as well as not being restricted in the design-related design by otherwise mandatory components.
  • the electrical luminaire with at least one high-power LED and a luminaire reflector has heat-conducting means, which are arranged between the high-power LED and the luminaire reflector, for dissipating heat generated by the high-power LED toward the luminaire reflector ,
  • a heat sink Adjacent to the high-power LED, a heat sink is arranged as a first constituent of the heat-conducting means, and a second constituent of the heat-conducting means extends between the heat sink and the luminaire reflector.
  • the heat-conducting means comprise a number of bridging elements forming the second component.
  • the high power LED is mounted on a board and the bridging elements are electrically isolated from the board.
  • the heat-conducting means comprise an electrically insulating layer, which forms the second component and is present as a separate insulating layer or belongs to the luminous reflector and / or to the heat sink.
  • One pole of the power supply to the high-power LED is formed by the lamp reflector, while the other pole of the power supply to the high-power LED is formed by the heat-conducting means in the form of the first component as a heat sink.
  • a first electrical connection is provided between the first component of the heat-conducting means in the form of the heat sink and the high-power LED, and a second electrical connection exists between the luminaire reflector and the high-power LED.
  • the high-power LED has a pedestal, and between the pedestal and the first part of the heat-conducting means in the form of the heat sink, a third part of the heat-conducting means is inserted.
  • a thermal compound is particularly suitable.
  • Figure 1A the basic structure of the inventive lamp in the first
  • FIG. 1B the enlarged detail X1 from FIG. 1A;
  • Figure 2A the basic structure of the inventive lamp in the second
  • FIG. 2B the enlarged detail X2 from FIG. 2A;
  • Figure 3A the basic structure of the inventive lamp in the third embodiment.
  • FIG. 3B the enlarged detail X3 from FIG. 3A.
  • FIGS. 1A and 1B are identical to FIGS. 1A and 1B.
  • the luminaire in the first embodiment consists essentially of a luminaire reflector 1, a high-power LED 2, a circuit board 3 and heat-conducting means 6, which serve to dissipate the heat generated by the LED 2.
  • the luminaire reflector 1 has an outer side 10 and an inner side 11.
  • the LED 2 preferably sits centrally in a recess of the luminaire reflector 1 and is composed of a base 20, a first and second terminals 21, 22 present thereon and the LED Reflector 23 together.
  • the heat conductive means 6 are formed of a first component 64, a second component 61 and a third component 63.
  • the first component 64 has the shape of a heat sink 64
  • the second component 61 has the shape of bridging elements 61
  • the third component 63 is a thermal paste 63.
  • the base 20 of the LED 2 is arranged in a recess of an adjacent heat sink 64, wherein the free space between the base 20 and the heat sink 64 is filled by thermal paste 63.
  • the bridging elements 61 represent a heat-conducting, with respect to the board 3 electrically insulated connection between the heat sink 64 and luminaire reflector 1.
  • the heat generated during operation of the LED 2 is first supplied to the heat sink 64 via the thermal compound 63.
  • a portion of the heat absorbed by the heat sink 64 is dissipated by the oncoming air, while another portion of heat is conducted via the bridging elements 61 to the reflector 1 and from there further reaches the ambient air.
  • the heat sink 64 is supported in its heat dissipation from the reflector 1 and can be dimensioned correspondingly smaller.
  • the power supply to the LED 2 is effected by the running on the board 3 first and second conductor 31,32 different polarity.
  • the first conductor 31 forms the negative pole and is connected through the first terminal 21 to the base 20 of the LED 2.
  • the second conductive line 32 forming the plus pole has contact with the base 20 of the LED 2 via the second terminal 22.
  • the board 3 is arranged between the luminaire reflector 1 and the heat sink 3, wherein the board 3 projecting bridging elements 61 are electrically insulated from the board 3.
  • FIGS. 2A and 2B are identical to FIGS. 2A and 2B.
  • the second embodiment of the luminaire also has a luminaire reflector 1, a high-power LED 2 and the heat-conducting means 6.
  • the circuit board 3 is now replaced by a second component 62 of the heat-conducting means 6 in the form of an insulating layer 62, which between the reflector 1 and the cooling body 64 is arranged.
  • the power supply has changed to the base 20 of the LED 2, in which now the negative pole on the heat sink 64 is applied, from which a first terminal 21 to the base 20 extends.
  • the plus pole is applied to the reflector 1, from where the second terminal 22 leads to the base 20.
  • a separate insulating layer 62 it may also belong directly to the luminaire reflector 1 and / or to the heat sink 64.
  • thermal compound 63 is provided between the heat sink 64 and the base 20, in turn, as the third component 63 of the heat-conducting means 6, thermal compound 63 is provided.
  • the heat flow from the heat sink 64 to the luminaire reflector 1 is now via the electrically insulating layer 62, so that the heat sink 64 is again assisted in the dissipation of the heat generated by the LED 2.
  • FIGS. 3A and 3B The third embodiment represents a hybrid between the first and the second embodiment.
  • the bridging elements 61 are adopted for heat conduction between the heat sink 64 and the luminaire reflector 1, while from the second embodiment the power supply of the LED 2 is used.
  • neither a circuit board 3 nor an insulating layer 62 is required.
  • the minus pole applied to the heat sink 64 is led to the base 20 via the first connection 21 and the plus pole applied to the luminaire reflector 1 is represented by the second connection 22 connected to the base 20. Due to the extension of the bridging elements 61 between the cooling element 64 forming the negative pole and the luminaire reflector 1 forming the positive pole, it is impossible for the bridging elements 61 to be electrically conductive. As in both previous embodiments, the space between the heat sink 64 and the base 20 is now filled with heat conductive paste 63.

Abstract

L'invention concerne une lampe électrique comportant une diode luminescente (LED) haute puissance (2) et un réflecteur de lampe (1). Pour la dissipation de la chaleur produite par la LED (2) en fonctionnement, des éléments (6) conduisant la chaleur sont disposés entre la LED et le réflecteur de lampe (1). De préférence, un corps de refroidissement (64) est disposé à côté de la LED (2) en tant que premier composant (64) des éléments (6) conduisant la chaleur, et un deuxième composant (61, 62) des éléments (6) conduisant la chaleur s'étend entre le corps de refroidissement (64) et le réflecteur de lampe (1). Dans un autre mode de réalisation, le deuxième composant (61) des éléments (6) conduisant la chaleur comporte une pluralité d'éléments de pontage (61). Dans un autre mode de réalisation, le deuxième composant (62) des éléments (6) conduisant la chaleur comporte une couche électroisolante (62) présente séparément ou appartenant au réflecteur de lampe (1) et/ou au corps de refroidissement (64). L'alimentation électrique de la LED (2) est réalisée au moyen d'une platine (3) ou le corps de refroidissement (64) et le réflecteur de lampe (1) peuvent être employés comme les deux pôles d'alimentation électrique de la LED (2).
EP08807091A 2007-09-19 2008-09-16 Lampe électrique comportant une diode luminescente et un réflecteur de lampe Withdrawn EP2191192A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH14602007 2007-09-19
PCT/IB2008/002409 WO2009037544A2 (fr) 2007-09-19 2008-09-16 Lampe électrique comportant une diode luminescente et un réflecteur de lampe

Publications (1)

Publication Number Publication Date
EP2191192A2 true EP2191192A2 (fr) 2010-06-02

Family

ID=40468493

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08807091A Withdrawn EP2191192A2 (fr) 2007-09-19 2008-09-16 Lampe électrique comportant une diode luminescente et un réflecteur de lampe

Country Status (2)

Country Link
EP (1) EP2191192A2 (fr)
WO (1) WO2009037544A2 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011091033A (ja) * 2009-09-25 2011-05-06 Toshiba Lighting & Technology Corp 発光モジュール、電球形ランプおよび照明器具
RU2645147C2 (ru) * 2012-03-08 2018-02-15 Филипс Лайтинг Холдинг Б.В. Светоизлучающее устройство и способ изготовления светоизлучающего устройства
CN103375701A (zh) * 2012-04-20 2013-10-30 立达信绿色照明股份有限公司 耐高压led灯

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139019A1 (fr) * 2000-03-31 2001-10-04 Relume Corporation Gestion de l'énergie thermique dans un DEL
US20070127252A1 (en) * 2005-12-07 2007-06-07 Visteon Global Technologies, Inc. Headlamp assembly with integrated reflector and heat sink

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8297801B2 (en) * 2004-07-16 2012-10-30 Osram Sylvania Inc. Light emitting diode disc optic with heat sink housing
DE102004042186B4 (de) * 2004-08-31 2010-07-01 Osram Opto Semiconductors Gmbh Optoelektronisches Bauelement
CN100483024C (zh) * 2004-11-09 2009-04-29 李学霖 发光二极管灯散热结构

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1139019A1 (fr) * 2000-03-31 2001-10-04 Relume Corporation Gestion de l'énergie thermique dans un DEL
US20070127252A1 (en) * 2005-12-07 2007-06-07 Visteon Global Technologies, Inc. Headlamp assembly with integrated reflector and heat sink

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2009037544A2 *

Also Published As

Publication number Publication date
WO2009037544A3 (fr) 2009-06-11
WO2009037544A2 (fr) 2009-03-26

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