EP2185857B1 - Module lumineux - Google Patents

Module lumineux Download PDF

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Publication number
EP2185857B1
EP2185857B1 EP08802139.9A EP08802139A EP2185857B1 EP 2185857 B1 EP2185857 B1 EP 2185857B1 EP 08802139 A EP08802139 A EP 08802139A EP 2185857 B1 EP2185857 B1 EP 2185857B1
Authority
EP
European Patent Office
Prior art keywords
light
luminous
module
heat sink
light source
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.)
Not-in-force
Application number
EP08802139.9A
Other languages
German (de)
English (en)
Other versions
EP2185857A2 (fr
Inventor
Simon Schwalenberg
Harald Stoyan
Hubertus Breier
Klaus Burkard
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.)
Osram GmbH
Original Assignee
Osram 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 Osram GmbH filed Critical Osram GmbH
Priority to EP13198835.4A priority Critical patent/EP2716960A3/fr
Publication of EP2185857A2 publication Critical patent/EP2185857A2/fr
Application granted granted Critical
Publication of EP2185857B1 publication Critical patent/EP2185857B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21V29/80—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with pins or wires
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/04—Arrangement of electric circuit elements in or on lighting devices the elements being switches
    • 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/345—Current stabilisation; Maintaining constant current
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/40—Details of LED load circuits
    • H05B45/44—Details of LED load circuits with an active control inside an LED matrix
    • H05B45/48—Details of LED load circuits with an active control inside an LED matrix having LEDs organised in strings and incorporating parallel shunting devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/10—Lighting devices or systems using a string or strip of light sources with light sources attached to loose electric cables, e.g. Christmas tree lights
    • 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]
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]

Definitions

  • the invention relates to a light module for a light chain and a light chain with such a light module, in particular for use in light boxes.
  • a red LED 2, a blue LED 3 opposite thereto, and two green LEDs 4 (only one of which are shown) adjacent thereto are used per module 1.
  • relatively inexpensive LEDs 2,3,4 can be used, which also need not be driven to their power limits.
  • Particularly suitable for this purpose is an activation of the LEDs 2, 3, 4 with a luminous component of green: blue: red of 60: 30: 10. Except white, by means of a suitable control of the LEDs 2, 3, 4 by means of pulse-width-modulated supply current, all others possible color mixtures are generated.
  • the arrangement of the retaining tabs 14 in the middle of the long edges 8a and the longer side edges of the elongated heat sink 8 is particularly advantageous for two reasons: First, then the distance to the heat sources (LEDs, electrical electronic components) low. This results in a particularly strong warming of the retaining tabs 14, which provides additional heat dissipation of the module 1 by heat conduction through the retaining tabs 14 to the mounting surface. Second, for free convection cooling on the heat sink 8, the long heatsink edges 8a of the air flowing through provide greater cross-sectional area (better cooling), and a negative influence of the retention tabs 14 is less pronounced than when provided at the shortest edges 8b of smaller cross-sectional area for the air. This leads to thermal properties of the heat sink 8, which depend less on the orientation of the heat sink 8 (eg vertically or horizontally) on a mounting surface than on differently arranged holding tabs 14.
  • the heat sink 8 has on the short sides 8b a recess 15 in the form of a bead.
  • a guide channel for the cable 9 is created. With a pulling force on the cable 9 in an arbitrary orientation (eg, up, down, right or left) carried by this channel, a transmission of force on solder joints of the cable 9 with the board 6 such that the force only in a small, insensitive as possible Angle range is directed to the board surface. This avoids shearing and peeling forces on the solder joints.
  • FIG. 3 shows a luminous chain 101, z. B. for backlighting of light panels, with n several successively interconnected lighting modules m1, m2, ..., mn.
  • the lighting modules have the same basic design.
  • Each of the lighting modules m1, m2,..., Mn has an exemplary light-emitting diode 102 and an LED driver circuit in the form of a current control circuit 103 for supplying power to the light-emitting diode (s) 102.
  • the current control circuit 103 is electrically connected between two respective driver power supply lines 104, 105.
  • One of these supply lines 105 corresponds to a continuous light source line 105, which is the LED 102 interposed.
  • Driver outputs of the control circuit 103 are each electrically connected to a continuous light source supply line 106.
  • the driver outputs are not led to the LED 102, but are connected via the light source supply line 106. Only up the last, so terminal light module mn the light source supply line ⁇ 106 is electrically connected to the light source line 105.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Endoscopes (AREA)

Claims (12)

  1. Module émetteur de lumière (1) destiné à une chaîne émettrice de lumière comportant au moins une source de lumière (2, 3, 4) et comportant au moins un connecteur de courant (9) destiné à alimenter l'au moins une source de lumière (2, 3, 4), dans lequel
    - le module émetteur de lumière (1) comprend un corps de refroidissement (8) et le corps de refroidissement (8) comprend des pattes de support (14) destinées à fixer le module émetteur de lumière (1),
    - les sources de lumière (2, 3, 4) sont disposées sur une face avant d'une carte de circuit (6, 10),
    - le corps de refroidissement (8) est relié à une face arrière de la carte de circuit (6, 11),
    - le corps de refroidissement (8) est réalisé de manière à présenter une forme oblongue, caractérisé en ce que
    - les languettes de support (14) reposent sur un bord latéral dans la région du milieu de l'axe longitudinal correspondant,
    - le corps de refroidissement (8) comporte un agencement constitué de tiges (13), et
    - la hauteur des pattes de support (14) est inférieure à la hauteur des tiges (13).
  2. Module émetteur de lumière (1) selon la revendication 1, dans lequel les pattes de support (14) et les tiges (13) présentent une différence de hauteur comprise entre environ 0,05 et environ 0,3 mm.
  3. Module émetteur de lumière (1) selon l'une quelconque des revendications précédentes, dans lequel le corps de refroidissement (8) présente une couleur claire ayant un coefficient de réflexion optique élevé.
  4. Module émetteur de lumière (1) selon l'une quelconque des revendications précédentes, comprenant en tant que sources de lumière une diode électroluminescente rouge (2), une diode électroluminescente bleue (3) et deux diodes électroluminescentes vertes (4).
  5. Module émetteur de lumière (1) selon l'une quelconque des revendications précédentes, dans lequel une optique de diffusion (5) destinée à diffuser la lumière rayonnée par la source de lumière respective (2, 3, 4) est associée à chaque source de lumière (2, 3, 4).
  6. Module émetteur de lumière (1) selon l'une quelconque des revendications précédentes, dans lequel la carte de circuit (6) est une carte de circuit à âme métallique.
  7. Module émetteur de lumière (1) selon l'une quelconque des revendications précédentes, comprenant en outre un couvercle (7) au moins destiné à recouvrir la carte de circuit (6), dans lequel le couvercle présente une réflectivité externe supérieure à 60 % dans la région visible de la lumière.
  8. Module émetteur de lumière (1 ; m1-mn) selon l'une quelconque des revendications précédentes, comprenant
    - au moins une ligne continue de sources de lumière (105) comportant au moins une source de lumière intercalée (102), notamment au moins une diode électroluminescente ;
    - au moins une ligne continue d'alimentation de sources de lumière (106) ;
    - au moins une ligne continue d'alimentation d'attaque (104, 105) destinée à mettre en fonctionnement au moins un circuit d'attaque (103) pour commander l'au moins une source de lumière (102) ;
    - dans lequel un circuit d'attaque alimente au moins une ligne continue d'alimentation d'attaque (104, 105).
  9. Chaîne émettrice de lumière (101) comportant au moins deux modules émetteurs de lumière (1 ; m1-mn) connectés en série selon l'une quelconque des revendications précédentes.
  10. Chaîne émettrice de lumière (101) selon la revendication 9, dans laquelle les modules émetteurs de lumière (1 ; m1-mn) sont connectés de manière à répartir une puissance dissipée d'un circuit d'attaque (103) destiné aux sources de lumière (2, 3, 4 ; 102) de manière sensiblement uniforme entre les modules émetteurs de lumière (1 ; m1-mn).
  11. Chaîne émettrice de lumière (101) selon l'une quelconque des revendications 9 ou 10, dans laquelle
    - au moins deux des modules émetteurs de lumière (m1-mn) comprennent un ensemble constitué d'au moins une source de lumière (102) et d'un circuit d'attaque (103) destiné à commander l'au moins une source de lumière (102), et
    - les circuits d'attaque (103) d'un ensemble des modules émetteurs de lumière respectifs (m1-mn) sont électriquement connectés les uns aux autres en parallèle, et
    - les sources de lumière (102) dudit ensemble des modules émetteurs de lumière respectifs (m1-mn) sont électriquement connectées les unes aux autres en série, et
    - les sorties d'attaque des circuits d'attaque (103) sont réunies en un point nodal (107) pour alimenter en courant en commun toutes les sources de lumière (102) dudit ensemble.
  12. Chaîne émettrice de lumière (101) selon la revendication 11, dans laquelle le circuit d'attaque (103) est un circuit de commande de courant ou un circuit à courant constant.
EP08802139.9A 2007-09-14 2008-09-12 Module lumineux Not-in-force EP2185857B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13198835.4A EP2716960A3 (fr) 2007-09-14 2008-09-12 Module d'éclairage

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007043861A DE102007043861A1 (de) 2007-09-14 2007-09-14 Leuchtmodul
PCT/EP2008/007588 WO2009036934A2 (fr) 2007-09-14 2008-09-12 Module lumineux

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP13198835.4A Division EP2716960A3 (fr) 2007-09-14 2008-09-12 Module d'éclairage
EP13198835.4A Division-Into EP2716960A3 (fr) 2007-09-14 2008-09-12 Module d'éclairage

Publications (2)

Publication Number Publication Date
EP2185857A2 EP2185857A2 (fr) 2010-05-19
EP2185857B1 true EP2185857B1 (fr) 2014-11-12

Family

ID=39971071

Family Applications (2)

Application Number Title Priority Date Filing Date
EP13198835.4A Withdrawn EP2716960A3 (fr) 2007-09-14 2008-09-12 Module d'éclairage
EP08802139.9A Not-in-force EP2185857B1 (fr) 2007-09-14 2008-09-12 Module lumineux

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP13198835.4A Withdrawn EP2716960A3 (fr) 2007-09-14 2008-09-12 Module d'éclairage

Country Status (5)

Country Link
US (1) US8657462B2 (fr)
EP (2) EP2716960A3 (fr)
CN (1) CN101802485B (fr)
DE (1) DE102007043861A1 (fr)
WO (1) WO2009036934A2 (fr)

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DE102009027493B4 (de) * 2009-07-07 2020-04-23 Robert Bosch Gmbh Entwärmung eines LED-beleuchteten Display-Moduls
DE102010043788B4 (de) * 2010-11-11 2023-12-07 Siteco Gmbh Schaltungsanordnung zum Betreiben mindestens einer Lichtquelle und Verfahren zum Herstellen einer derartigen Schaltungsanordnung
CN102946699B (zh) * 2011-08-15 2017-04-12 欧司朗股份有限公司 电子模块的壳体和电子模块、发光模块以及背光源模块
EP2720265A1 (fr) * 2012-10-12 2014-04-16 IDEA Korb AG Corps de refroidissement pour barrette de lampes à diodes
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Also Published As

Publication number Publication date
EP2185857A2 (fr) 2010-05-19
CN101802485B (zh) 2013-01-02
EP2716960A2 (fr) 2014-04-09
US8657462B2 (en) 2014-02-25
CN101802485A (zh) 2010-08-11
US20110285298A1 (en) 2011-11-24
WO2009036934A3 (fr) 2009-05-28
WO2009036934A2 (fr) 2009-03-26
DE102007043861A1 (de) 2009-04-09
EP2716960A3 (fr) 2017-10-25

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