DE202007016052U1 - Headlights for vehicles - Google Patents

Headlights for vehicles

Info

Publication number
DE202007016052U1
DE202007016052U1 DE202007016052U DE202007016052U DE202007016052U1 DE 202007016052 U1 DE202007016052 U1 DE 202007016052U1 DE 202007016052 U DE202007016052 U DE 202007016052U DE 202007016052 U DE202007016052 U DE 202007016052U DE 202007016052 U1 DE202007016052 U1 DE 202007016052U1
Authority
DE
Germany
Prior art keywords
heat sink
lighting device
characterized
housing
led module
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.)
Expired - Lifetime
Application number
DE202007016052U
Other languages
German (de)
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGAA Huek and Co
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 Hella KGAA Huek and Co filed Critical Hella KGAA Huek and Co
Priority to DE202007016052U priority Critical patent/DE202007016052U1/en
Publication of DE202007016052U1 publication Critical patent/DE202007016052U1/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40Cooling of lighting devices
    • F21S45/47Passive cooling, e.g. using fins, thermal conductive elements or openings
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141Light emitting diodes [LED]
    • F21S41/143Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50Cooling arrangements
    • F21V29/70Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21YINDEXING 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
    • F21Y2115/00Light-generating elements of semiconductor light sources
    • F21Y2115/10Light-emitting diodes [LED]

Abstract

lighting device for vehicles with a housing (1), with a lens covering the front of the housing (1), arranged with at least one between the housing (1) and the lens LED module (2), with a heat sink (3), with a fastening edge (4) at an edge region (5) of a receiving opening (14) of the housing (1) is held and a the LED module (2) facing heat receiving surface (6) and one to the outside directed heat radiation surface (7) characterized in that the heat sink (3) at least in one Part section has a recess (8), starting from a Reference surface, in the attachment edge (4) of the heat sink (3) or the edge region (5) the receiving opening (14) lies, extends to the lens forward and after open at the back is or extends to the rear and is designed to be open inside.

Description

  • The The invention relates to a lighting device for vehicles with a housing, with a lens covering the front of the housing, arranged with at least one between housing and lens LED module, with a heat sink, the with a fastening edge at an edge region of a receiving opening of the housing is held and the LED module facing heat receiving surface and an outward facing Heat radiating surface has.
  • A lighting device of this kind is from the DE-A-10 2006 001 711 known, in which the cooling body has a flat plate whose peripheral edge is fixed to the edge region of the receiving opening of the housing. From both wide side surfaces of the plate, cooling fins extend into the interior of the lighting device and to the outside. Adjacent to the free end portions of the cooling ribs directed inwards and thus toward the lens, LED modules are arranged on the cooling body. Despite the cooling fins, the heat dissipation can be so small that the temperature inside the lighting device rises too high.
  • task the invention is that described in the preamble of claim 1 Lighting device to improve such that through the heat sink, the heat dissipation outward improves. This object is achieved according to the invention in that the heat sink at least in a subsection has a depression, starting from a reference surface, in the attachment edge of the heat sink or the edge region of the receiving opening lies, extends to the lens to the front and to the rear open is or extends to the rear and is designed to be open inside. Through the recess, the heat sink has a Heat absorption surface on, the large area very much arranged close to the heat radiation surface is and the LED module can still take the desired location in the lighting device. With a recess extending inward, the LED module can be far inside be arranged the lighting device and still is a big enough heat dissipation outward given.
  • Farther It is advantageous if the heat sink the inside of the bottom and the side surface of the recess at least a molded-in inner cooling fin having. This increases the heat receiving surface or Heat radiation. In In this context, it may also be advantageous if the inner cooling fin protrudes with an end portion of the recess. It can the Heat sink on the outside of the bottom have at least one molded outer fin or the free end portion of an inner fin carries at least one LED module. At a advantageous development of the invention, the heat sink both several inner and outer cooling fins on.
  • Advantageous it is still, if the heat absorption surface of the Heatsink at least a step, wherein adjacent to the step treads a Auflagefläche- and / or mounting and / or positioning surface for the LED module and / or of an electronic element. The LED module has at least one LED on.
  • From It is also advantageous if between the attachment edge of the Heatsink and the edge region of the receiving opening a circumferential sealing device exists and between the heat sink and the housing a detachable one Fastening device exists.
  • Reference to the accompanying drawings, the invention is explained in more detail below. The show 1 to 4 a partial view of a lighting device for vehicles with four variants of a heat sink for at least one LED module.
  • The lighting device for vehicles has a headlamp with a cup-shaped housing 1 and one the housing 1 covering lens (not shown). The housing 1 has a receiving opening 14 for a heat sink 3 on, the at least one LED module 2 and possibly at least one electronic element (not shown) carries. The LED module 2 may have one or more LED's. The heat sink 3 has a heat receiving surface toward the interior of the lighting device 6 for at least one LED module 2 on. At the heat receiving surface 6 is that at least one LED module 2 appropriate. The heat sink 3 is with a circumferential mounting edge 4 on a peripheral edge area 5 the receiving opening 14 of the housing 1 attached. Between the attachment edge 4 of the heat sink 3 and the edge area 5 the receiving opening 14 consists circumferentially a sealing device 13 , The sealing device 13 consists of a recording bed of the edge area 5 or the attachment edge 4 for a sealant (not shown) in which either the attachment edge 4 or the border area 5 dips. Between the border area 5 and the attachment edge 4 there is a not shown releasable fastening device.
  • In the 1 and 2 has the heat sink 3 at its attachment edge 4 the recording bed for the sealant on. The heat sink 3 is with its mounting edge 4 from the interior of the headlamp to the edge area 5 of the housing 1 . which points to the interior of the headlamp, put on. The heat sink 3 has a recess 8th open to the back of the headlamp, with the recess 8th starting from a reference surface in which the edge region 5 the receiving opening 14 lies, extends to the lens of the headlight. The heat sink 3 points to the bottom and the side surfaces of the recess 8th molded outer cooling fins 10 on. The outer cooling fins 10 protrude with their free Endab section of the depression 8th out. In 1 has the heat sink 3 on the front of the lens facing portion of the heat receiving surface 6 a step 11 on, on both treads 12 an LED module is attached. In 2 has the heat sink 3 in the area of the LED module 2 a section 15 with a thicker wall thickness.
  • In the 3 and 4 is the depression 8th of the heat sink 3 to the interior of the heat sink 3 opened. The depression 8th extends from the reference surface, in which the edge region 5 the receiving opening 14 lies, outward. In 3 indicates the floor or the heat receiving surface 6 the depression 8th a step 11 with two treads 12 on, on each of which an LED module 2 is attached. At the outer heat radiating surface 7 the depression 8th are several outer cooling fins 10 formed. In the 4 has the heat sink 3 at the bottom of the depression 8th molded inner cooling ribs 9 on, at their end faces an LED module 2 is appropriate.
  • 1
    casing
    2
    LED module
    3
    heatsink
    4
    fastening edge
    5
    border area
    6
    Heat absorbing surface
    7
    heat radiation
    8th
    deepening
    9
    inner cooling fin
    10
    outer cooling fin
    11
    step
    12
    tread
    13
    seal means
    14
    receiving opening
    15
    section

Claims (9)

  1. Lighting device for vehicles with a housing ( 1 ), with one the front of the housing ( 1 ) covering lens, with at least one between housing ( 1 ) and lens arranged LED module ( 2 ), with a heat sink ( 3 ), which with a fastening edge ( 4 ) at an edge area ( 5 ) a receiving opening ( 14 ) of the housing ( 1 ) and one of the LED module ( 2 ) facing heat receiving surface ( 6 ) and an outwardly directed heat radiation surface ( 7 ), characterized in that the heat sink ( 3 ) at least in a subsection a depression ( 8th ), starting from a reference surface in which the fastening edge ( 4 ) of the heat sink ( 3 ) or the edge area ( 5 ) of the receiving opening ( 14 ), extends to the lens forward and is designed to be open at the back or extends to the rear and is designed to be open inside.
  2. Lighting device according to claim 1, characterized in that the heat sink ( 3 ) on the inside of the bottom and the side surface of the recess ( 8th ) at least one molded inner fin ( 9 ) having.
  3. Lighting device according to claim 2, characterized in that the inner cooling rib ( 9 ) with an end portion of the recess ( 8th ) stands out.
  4. Lighting device according to one of claims 1 to 3, characterized in that the heat sink ( 3 ) on the outside of the bottom at least one molded outer fin ( 10 ) having.
  5. Lighting device according to claim 2 or 3, characterized in that the free end portion of the cooling rib ( 9 respectively. 10 ) at least one LED module ( 2 ) wearing.
  6. Lighting device according to one of claims 1 to 5, characterized in that the heat receiving surface ( 6 ) of the heat sink ( 3 ) at least one stage ( 11 ), where at the stage ( 11 ) adjacent treads ( 12 ) a bearing surface and / or mounting and / or positioning surface for the LED module ( 2 ) and / or an electronic element.
  7. Lighting device according to one of claims 1 to 6, characterized in that between the fastening edge ( 4 ) of the heat sink ( 3 ) and the edge area ( 5 ) of the receiving opening ( 14 ) a circumferential sealing device ( 13 ) consists.
  8. Lighting device according to one of claims 1 to 7, characterized in that between the heat sink ( 3 ) and the housing ( 1 ) There is a releasable fastening device.
  9. Lighting device according to one of claims 1 to 8, characterized in that the heat sink ( 3 ) in the area of the LED module ( 2 ) a section ( 15 ) having a thicker wall thickness.
DE202007016052U 2007-11-15 2007-11-15 Headlights for vehicles Expired - Lifetime DE202007016052U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE202007016052U DE202007016052U1 (en) 2007-11-15 2007-11-15 Headlights for vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202007016052U DE202007016052U1 (en) 2007-11-15 2007-11-15 Headlights for vehicles

Publications (1)

Publication Number Publication Date
DE202007016052U1 true DE202007016052U1 (en) 2008-02-14

Family

ID=39079239

Family Applications (1)

Application Number Title Priority Date Filing Date
DE202007016052U Expired - Lifetime DE202007016052U1 (en) 2007-11-15 2007-11-15 Headlights for vehicles

Country Status (1)

Country Link
DE (1) DE202007016052U1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2938316A1 (en) * 2008-11-12 2010-05-14 Valeo Vision Sas Monobloc heat dissipator for optical modules of a lighting and / or signaling device for a motor vehicle
WO2012038172A1 (en) * 2010-09-21 2012-03-29 Osram Ag Lighting device
FR2971463A1 (en) * 2011-02-15 2012-08-17 Peugeot Citroen Automobiles Sa Anti-condensation device for e.g. headlight of electric car, has aluminum part including portions placed at interior and outside of cavity to maintain balancing temperature between interior and outside of cavity
WO2013037408A1 (en) * 2011-09-14 2013-03-21 Osram Ag Head light apparatus with led
CN105987337A (en) * 2015-03-23 2016-10-05 法雷奥照明公司 Light module for motor vehicle comprising two light guides and a radiator comprising two mounting surfaces
EP2487408A3 (en) * 2011-02-09 2017-10-11 Koito Manufacturing Co., Ltd. Automotive headlamp forming multiple light distribution patterns with a single lamp
DE102016210048A1 (en) * 2016-06-08 2017-12-14 Osram Gmbh Light source assembly for a vehicle and lighting device for a vehicle with the light source arrangement
EP2275738B2 (en) 2009-07-13 2019-06-12 Automotive Lighting Reutlingen GmbH Cooling element for a semiconductor light source of a motor vehicle lighting device

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2938316A1 (en) * 2008-11-12 2010-05-14 Valeo Vision Sas Monobloc heat dissipator for optical modules of a lighting and / or signaling device for a motor vehicle
EP2187121A1 (en) * 2008-11-12 2010-05-19 Valeo Vision Single-piece heat sink for optical modules of a lighting and/or signalling device for an automobile
JP2010118344A (en) * 2008-11-12 2010-05-27 Valeo Vision Single block radiator for optical module in lighting device or signalling device of automobile
EP2275738B2 (en) 2009-07-13 2019-06-12 Automotive Lighting Reutlingen GmbH Cooling element for a semiconductor light source of a motor vehicle lighting device
WO2012038172A1 (en) * 2010-09-21 2012-03-29 Osram Ag Lighting device
EP2487408A3 (en) * 2011-02-09 2017-10-11 Koito Manufacturing Co., Ltd. Automotive headlamp forming multiple light distribution patterns with a single lamp
FR2971463A1 (en) * 2011-02-15 2012-08-17 Peugeot Citroen Automobiles Sa Anti-condensation device for e.g. headlight of electric car, has aluminum part including portions placed at interior and outside of cavity to maintain balancing temperature between interior and outside of cavity
WO2013037408A1 (en) * 2011-09-14 2013-03-21 Osram Ag Head light apparatus with led
CN105987337A (en) * 2015-03-23 2016-10-05 法雷奥照明公司 Light module for motor vehicle comprising two light guides and a radiator comprising two mounting surfaces
DE102016210048A1 (en) * 2016-06-08 2017-12-14 Osram Gmbh Light source assembly for a vehicle and lighting device for a vehicle with the light source arrangement

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Legal Events

Date Code Title Description
R207 Utility model specification

Effective date: 20080320

R163 Identified publications notified
R150 Term of protection extended to 6 years

Effective date: 20101206

R151 Term of protection extended to 8 years
R151 Term of protection extended to 8 years

Effective date: 20131126

R152 Term of protection extended to 10 years
R071 Expiry of right
R081 Change of applicant/patentee

Owner name: HELLA GMBH & CO. KGAA, DE

Free format text: FORMER OWNER: HELLA KGAA HUECK & CO., 59557 LIPPSTADT, DE