EP1467144B1 - Dispositif générateur de lumière avec réflecteur - Google Patents

Dispositif générateur de lumière avec réflecteur Download PDF

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Publication number
EP1467144B1
EP1467144B1 EP04005058.5A EP04005058A EP1467144B1 EP 1467144 B1 EP1467144 B1 EP 1467144B1 EP 04005058 A EP04005058 A EP 04005058A EP 1467144 B1 EP1467144 B1 EP 1467144B1
Authority
EP
European Patent Office
Prior art keywords
reflector
generating device
light generating
light
heat dissipation
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
EP04005058.5A
Other languages
German (de)
English (en)
Other versions
EP1467144A2 (fr
EP1467144A3 (fr
Inventor
Lars Dr. Bewig
Ulrich Zierfas
Torsten Holdmann
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.)
Auer Lighting GmbH
Original Assignee
Auer Lighting 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 Auer Lighting GmbH filed Critical Auer Lighting GmbH
Publication of EP1467144A2 publication Critical patent/EP1467144A2/fr
Publication of EP1467144A3 publication Critical patent/EP1467144A3/fr
Application granted granted Critical
Publication of EP1467144B1 publication Critical patent/EP1467144B1/fr
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Expired - Lifetime 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
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of reflectors
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • 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
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • 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
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • 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
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/03—Gas-tight or water-tight arrangements with provision for venting
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/24—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by the material
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors
    • F21V7/28—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic reflectors characterised by coatings

Definitions

  • the invention relates generally to lighting means, in particular the invention relates to a light-generating device with reflector and cooling structure.
  • EP 0 311 124 A1 is a therapeutic lamp for biostimulation with polarized light known, in which the reflector concentrically arranged rear cooling rings are incorporated.
  • the DE 24 37 926 A1 discloses a lighting fixture having a cold mirror reflector disposed in a housing. Ventilation openings are provided in the housing so that air can circulate between the inside and outside of the housing.
  • the reflector is made of metallic material.
  • a pigmented glassy coating absorbs the infrared light passing through the cold mirror coating.
  • the invention has for its object to provide a light-generating system, in particular a light-generating device, which provides an improvement in the above-mentioned problems.
  • This object is already achieved in a surprisingly simple manner by the subject matter of the independent claims.
  • Advantageous embodiments and further developments are further specified in the subclaims.
  • the invention provides a light-generating device comprising a reflector, and means for improving the heat dissipation from the reflector.
  • a light-generating device wherein the means for improving the heat dissipation with the Rear side of the reflector is connected or arranged on this.
  • the back or outer side of the reflector is understood to mean a side of the reflector facing away from the luminous means or the location provided for the luminous means.
  • the device for improving the heat removal comprises a radiation-absorbing surface.
  • the device for improving the heat dissipation may comprise a radiation-absorbing coating, wherein it is particularly expedient if the coating absorbs the heat radiation in the infrared range, in particular in the spectral range.
  • a radiation-absorbing coating can in a simple way to not or low-absorbing materials of a reflector body, such as a glass dome are applied.
  • the heat radiation emitted by the reflector or passing through the reflector can be selectively absorbed there, so that improved cooling can be achieved at the radiation-absorbing surface.
  • a preferred embodiment also provides that the heat radiation-absorbing coating is disposed on the reflector outside.
  • the coating can cover the entire outside or one or more subregions.
  • a surface intended for cooling comprises vortex-generating structures.
  • the structures may be arranged on at least one area of the surface of the reflector.
  • a preferred embodiment of the invention provides that the vortex-generating structures are arranged on the reflector outside.
  • Vortex-generating structures are the dimples or depressions provided according to the invention, which may be, for example, circular. These can be easily produced and ensure in case of flow around a surface provided with such structures with a cooling fluid due to the vortex formation for an effective mixing of cold and hot fluid layers and thus to a more effective heat exchange.
  • the reflector may also be advantageously equipped with a self-cleaning surface. This prevents the accumulation or deposition of impurities that Inter alia, adversely affect the heat dissipation.
  • Self-cleaning properties can be achieved, inter alia, by the vortex-forming structures mentioned above, whereby the formation of turbulence prevents formation of flow dead zones and thus the deposition of impurities, such as dust.
  • the device for improving the heat dissipation comprises a heat sink connected to the reflector so as to increase the effective cooling area.
  • the heat sink may also have a shape adapted to the reflector in the region of the connection with the reflector in order to improve the heat conduction from the reflector into the heat sink.
  • the device for improving the heat removal comprises a heat-conducting layer arranged on the reflector, in particular on the reflector outer side.
  • a heat-conducting layer arranged on the reflector, in particular on the reflector outer side.
  • a reflector can be provided with a metallic coating.
  • such a coating also ensures increased thermal shock resistance, since the heat can be distributed more rapidly to the reflector body or parts of the reflector body and temperature stresses in the reflector material can be avoided.
  • the reflector is provided with a coating comprising two layers, wherein a first layer is radiation-absorbing and a second, disposed over the first layer layer is highly thermally conductive.
  • a reflection of the radiation through the first layer can be avoided and the radiation power can be deliberately introduced into this layer, in which case the second layer ensures a more uniform temperature distribution along the coated surface.
  • this layer is also arranged on the reflector outside.
  • the device for improving the heat dissipation can also advantageously comprise a CVD and / or PVD coating of the reflector.
  • This layer may in particular comprise a radiation-absorbing and / or heat-conducting layer.
  • CVD and PVD coatings can be produced in a wide range of materials and also easily as absorbing layers. For example, for this purpose, a silicon oxide layer having a high carbon content, in particular amorphous carbon, can be deposited, which has good absorption properties.
  • the CVD coating may also include one or more metal oxides, among others, oxides of the metals titanium, tantalum and niobium are suitable. The method of PVD coating is useful to deposit about metallic layers.
  • the device for improving the heat dissipation may advantageously also comprise a metal foil brought into contact with the reflector.
  • the bringing into contact can take place, inter alia, by gluing or clamping between the reflector and another part.
  • the light-generating device also comprises air cooling to absorb heat from components of the heat removal enhancer.
  • the air cooling can itself be part of the device for improving the heat dissipation.
  • the air cooling may include, for example, a fan and / or be configured as convection cooling.
  • the light-generating device may itself comprise at least one light source or be designed accordingly for the equipment with a light source.
  • Suitable lamps are, for example, ultra-high-pressure lamps, in particular short-arc lamps, or halogen lamps.
  • the device according to the invention can also be equipped with a housing.
  • the housing may be configured for safety reasons expediently as splinter protection housing.
  • the housing may also have at least one light-protected opening through which cooling air can be supplied without light, which passes through the reflector or through recesses in this in the housing body, passes through the housing opening to the outside.
  • the device may also include a thermal connection with the reflector with thermal paste, or be connected to the reflector via a thermal paste layer with the reflector.
  • thermal compound can be introduced between the reflector and a heat sink or a heat-distributing metal foil.
  • a good thermal contact can also be achieved with a resilient and / or adapted to the shape of the reflector cup of the device for improving the heat dissipation, which conforms to the reflector.
  • plastics for the reflector, a variety of materials, such as metal, glass, or glass ceramic are suitable. Due to the inventively provided improved heat dissipation even plastics can be used. These may contain, for example, at least one of the plastics polycarbonate, polyetherimide, polymethyl methacrylate, cyclic olefin, olefin copolymer, polyethersulfone.
  • composite materials may also be used for the reflector, such as a composite material of one or more of the aforementioned plastics with a metallic material.
  • the invention also provides, to provide a reflector which is equipped with a device for improving the heat dissipation and in particular may be suitable for use in a device according to the invention.
  • the device for improving the heat dissipation of the reflector according to the invention may according to one embodiment of the invention comprise a coating of at least a portion of a surface of the reflector.
  • a preferred embodiment provides that the coating is arranged on the outside of the reflector.
  • the coating may advantageously be radiation-absorbing, in particular heat-radiation-absorbing or infrared-absorbing.
  • the coating comprises a highly thermally conductive layer in order to achieve a better distribution of the heat output on and in the reflector.
  • the device for improving the heat dissipation may also have surface-enlarging cooling structures of the reflector body, such as cooling ribs or nubs, in order to increase the cooling capacity.
  • Fig. 1 is a cross-sectional view of an embodiment of a light generating device according to the invention shown, which is designated as a whole by the reference numeral 1.
  • the light-generating device 1 comprising a reflector 2 with an inner side 4 and an outer side 6, and a device for improving the heat dissipation from the reflector 2.
  • the inner side 4 is concavely curved so that light of a light source, which in or before through the curved Inside defined cavity is arranged, is bundled by reflection from the surface of the inside 4.
  • the reflector may be made of metal, glass, glass ceramic, or plastic, or may comprise a composite material of two or more of these materials.
  • a material for a plastic reflector or a reflector with a composite reflector body in particular the plastics polycarbonate, polyetherimide, polymethylmethacrylate, cyclic olefin, olefin copolymer, or polyethersulfone can be used.
  • the reflector 2 is the in Fig. 1 shown embodiment also designed as a cold light reflector.
  • the lighting means 10 in this embodiment comprises an ultra-high pressure lamp whose Connecting legs 101, 102 are guided through recesses 12 of the reflector 2.
  • the device for improving the heat dissipation is connected to the rear side of the reflector.
  • the device for improving the heat dissipation comprises a coating 8 on the reflector outer side 6.
  • This coating is designed as a heat radiation-absorbing coating.
  • This coating can be produced for example by CVD coating of the reflector, or also comprise a PVD coating.
  • CVD and PVD coating multilayer coatings in particular can be deposited in a simple manner, for example by changing the composition of the process gas during coating.
  • Thermal radiation which is emitted by the light-emitting means 10 during operation of the device, passes through the reflector body and is then absorbed on the rear or outer side 6 by the coating 8 serving as a heat radiation-absorbing surface. This also leads to a back reflection of the heat radiation is prevented, so that through the coating 8, a reduction of the heat radiation components in the spectral distribution of the light cone emitted by the device occurs.
  • the coating 8 can also serve for improved heat distribution when the coating 8 comprises a heat-conducting layer. This not only leads to a targeted absorption of radiant energy, which can then be dissipated by the layer 8, but also among other things to an improved thermal shock resistance of the reflector. 2
  • the device for improving the heat dissipation further comprises a heat sink 16.
  • a heat sink 16 This is provided with a region of the reflector outside 6, or the coating 8 on the reflector outside 6 connected.
  • the heat sink 16 has in the region of the connection with the reflector on a receiving cup 32 for the reflector, the surface of which has a shape adapted to the reflector. This increases the contact area between heat sink 16 and reflector 2 for more effective cooling.
  • thermal connection with thermal compound 14 is present between the heat sink 2 and reflector.
  • an air cooling is provided as part of the device for improving the heat dissipation from the reflector.
  • This comprises a fan 18 which sucks in an air stream and blows on the heat sink or generates a stream of air flowing around the heat sink by sucking air from the direction of the heat sink.
  • the heat sink has a channel 24 through which the air of the fan 18 flow and can escape through openings 28 again.
  • Internal cooling fins 26 in the channel 24 provide additional heat exchange.
  • the cooling is additionally supported by external cooling fins 30.
  • the cooling fins 26 and 30 may also be different than m Fig. 1 shown schematically, along the flow direction of the air flow generated by the fan 18.
  • the heat sink can be massive, that is configured without a channel 24, which among other things reduces the production cost.
  • One Such heat sink is in perspective view in Fig. 2 shown. At the in Fig. 2 shown cylindrical heat sink 16, the cooling fins 30 extend along the axis of symmetry of the body.
  • the surface of the heat sink 16 may additionally include one or more areas of turbulence generating structures. Examples of such vortex-generating structures are defined roughnesses or depressions.
  • the light-generating device 1 comprises in the in Fig. 1 also shown, a housing 20.
  • This housing 20 may serve as splinter protection, which is particularly advantageous when using ultra-high-pressure lamps as a light source.
  • the housing 20 also has a plurality of light-shielded openings 22, which allow the exchange of air for cooling and at the same time prevent light that enters the housing, for example, through the openings 12 in the reflector 2, comes to the outside.
  • the openings 22 may be provided with suitable diaphragms which block a direct light emission.
  • a section of a coated reflector 2 is shown in cross-sectional view.
  • the substrate or the reflector body 3 is similar to that in FIG Fig. 1 shown embodiment on the reflector outer side 6 is provided with a coating 8.
  • the coating 8 is both radiation-absorbing, as well as highly thermally conductive.
  • the layer 8 comprises a first layer 81 which is applied to the reflector body 3 and a second layer 82 applied over the first layer 81.
  • the first layer 81 is radiation-absorbing, and this property applies in particular to the heat radiation components emitted by the lamp.
  • the radiation-absorbing property can be achieved, for example, by a high layer roughness and / or a sufficient proportion of amorphous carbon in the layer.
  • the arranged above second layer 81 is highly thermally conductive.
  • this layer 82 may comprise a suitable metal.
  • the first layer 81 prevents significant radiation components from being reflected back from the second layer 82 and thus again being able to provide a spectral contribution in the case of a cold-light reflector.
  • Fig. 4 shows an embodiment of a reflector 2 according to the invention, which is equipped with a device for improving the heat dissipation and can also be used in a device 1 according to the invention, as exemplified in Fig. 1 is shown.
  • the reflector comprises a reflector body 3 with a concavely curved inner side 4, which forms the reflecting surface of the reflector 2 for the light emitted by a light source, the inner surface 4 being equipped, for example, with a radiation-reflecting coating.
  • This can be embodied as an interference filter or dielectric mirror which, in the manner of a cold-light reflector, reflects visible light and transmits longer-wavelength light.
  • the device for improving the heat dissipation comprises surface-enlarging cooling structures of the reflector body 3 in the form of cooling fins 31 on the outside 6.
  • the cooling fins 31 extend in this embodiment along the example Symmetry axis of the reflector body 3. This configuration is advantageous, inter alia, if in addition an air cooling with fan is used, which generates an air flow in the direction of the axis of symmetry.
  • the reflector 2 on the outside 6 can also have vortex-generating structures in order to improve the mixing of the air during cooling.
  • openings 12 which allow the receptacles and arrangement of the bulb in the reflector in front of the inside 4.
  • the device for improving the heat dissipation comprises a coating 8 at least a portion of the outside of the reflector 2.
  • the coating 8 may be advantageous as in Fig. 3 shown coating with a lower, radiation-absorbing layer 8 and a first layer 81 covering this second layer 82, wherein the second layer 82 is highly thermally conductive and serves the temperature compensation.
  • a further embodiment of a reflector 2 according to the invention, or a light-generating device 1 is shown.
  • the lighting means 10 is integrated in the reflector 2.
  • the illuminant may, for example, as shown, a halogen bulb or again an ultra-high pressure lamp.
  • the reflector 2 is also provided on its outer side 6 with a coating 8 as part of a device for improving the heat dissipation, as in the embodiments described above.
  • the coating 8 serves for radiation absorption and may also have heat-conducting properties.
  • a heat-conductive metal foil 34 which is in contact with the reflector 2 or with its coated outside 6, is applied on the outside 6 of the reflector 2 as a further component of the device for improving the heat dissipation.
  • the metal foil 34 may be due to their flexibility and flexibility cling well to the shape of the reflector 2 and serves to better distribution of the heat output, in particular on the reflector outer side. 6
  • Fig. 6 shows a further preferred embodiment of a reflector 2 according to the invention in this embodiment, the means for improving the heat removal vortex-generating structures in the form of dimples or depressions 36, which may be circular, for example, and which are arranged on the outer surface 6 of the reflector.
  • the depressions 36 may be arranged in a regular pattern, for example in the form of a hexagonal matrix on the outer surface 6 or a partial region of the outer surface 6.
  • the recesses provide a cooling fluid, in particular air, for intensive turbulence of the fluid and thus improved heat exchange of the surface of the reflector 2 with the cooling fluid.

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  • 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)
  • Optical Elements Other Than Lenses (AREA)

Claims (21)

  1. Dispositif générateur de lumière (1), comprenant un réflecteur (2) réalisé comme réflecteur à lumière froide, ainsi qu'un dispositif pour améliorer la dissipation de chaleur par le réflecteur (2), caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur présente une surface avec des structures génératrices de turbulences, lesdites structures génératrices de turbulences comportant des fossettes disposées sur la face extérieure (6) du réflecteur (2).
  2. Dispositif générateur de lumière selon la revendication 1, caractérisé en ce que les structures génératrices de turbulences présentent des évidements (36) circulaires.
  3. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur comprend un corps de refroidissement (16) relié au réflecteur (2).
  4. Dispositif générateur de lumière selon la revendication 7, caractérisé en ce que le corps de refroidissement présente une forme ajustée au réflecteur dans la zone de raccordement au réflecteur.
  5. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé par un refroidissement à air.
  6. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le refroidissement à air comprend un ventilateur ou un refroidissement à convection.
  7. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé par au moins une source d'éclairage.
  8. Dispositif générateur de lumière selon la revendication 7, caractérisé en ce que la source d'éclairage comprend une lampe ultra-haute pression, en particulier une lampe à arc court, ou une lampe halogène.
  9. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé par un boîtier à protection anti-éclats.
  10. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé par un boîtier avec au moins une ouverture protégée de la lumière.
  11. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur présente un raccord à pâte thermoconductrice avec le réflecteur.
  12. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur comporte une coupelle élastique ou ajustée à la forme du réflecteur, laquelle s'adapte au réflecteur (2).
  13. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur comporte une feuille métallique (34) mise en contact avec le réflecteur (2).
  14. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le réflecteur (2) comprend au moins un des matériaux suivants : métal, verre, vitrocéramique, matière synthétique.
  15. Dispositif générateur de lumière selon la revendication 20, caractérisé en ce que le réflecteur (2) présente un matériau comprenant au moins une des matières synthétiques suivantes : polycarbonate, polyétherimide, polyméthacrylate de méthyle, oléfine cyclique, copolymère d'oléfine, polyéthersulfone.
  16. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le réflecteur (2) comprend un matériau composite.
  17. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur comporte un revêtement CVD ou PVD du réflecteur (2).
  18. Dispositif générateur de lumière selon l'une des revendications précédentes, caractérisé en ce que le réflecteur (2) est pourvu d'une surface autonettoyante.
  19. Réflecteur (2) réalisé comme réflecteur à lumière froide avec un dispositif pour améliorer la dissipation de chaleur, en particulier pour un dispositif selon l'une des revendications précédentes, caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur présente des structures génératrices de turbulences sous la forme de fossettes disposées sur la face extérieure (6) du réflecteur (2).
  20. Réflecteur selon la revendication 20, caractérisé en ce que les structures génératrices de turbulences présentent des évidements (36) circulaires.
  21. Réflecteur selon l'une quelconque des revendications 20 à 21, caractérisé en ce que le dispositif pour améliorer la dissipation de chaleur présente des structures de refroidissement à agrandissement superficiel du corps (3) de réflecteur, telles que des nervures de refroidissement (31) ou des boutons.
EP04005058.5A 2003-04-09 2004-03-04 Dispositif générateur de lumière avec réflecteur Expired - Lifetime EP1467144B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10316506A DE10316506A1 (de) 2003-04-09 2003-04-09 Lichterzeugende Vorrichtung mit Reflektor
DE10316506 2003-04-09

Publications (3)

Publication Number Publication Date
EP1467144A2 EP1467144A2 (fr) 2004-10-13
EP1467144A3 EP1467144A3 (fr) 2007-07-18
EP1467144B1 true EP1467144B1 (fr) 2014-11-26

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EP04005058.5A Expired - Lifetime EP1467144B1 (fr) 2003-04-09 2004-03-04 Dispositif générateur de lumière avec réflecteur

Country Status (5)

Country Link
US (1) US7244051B2 (fr)
EP (1) EP1467144B1 (fr)
JP (1) JP4386782B2 (fr)
CN (1) CN100465779C (fr)
DE (1) DE10316506A1 (fr)

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US10340424B2 (en) 2002-08-30 2019-07-02 GE Lighting Solutions, LLC Light emitting diode component
US7145125B2 (en) 2003-06-23 2006-12-05 Advanced Optical Technologies, Llc Integrating chamber cone light using LED sources
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Also Published As

Publication number Publication date
EP1467144A2 (fr) 2004-10-13
EP1467144A3 (fr) 2007-07-18
CN100465779C (zh) 2009-03-04
DE10316506A1 (de) 2004-11-18
US20040264197A1 (en) 2004-12-30
CN1550870A (zh) 2004-12-01
JP2004311444A (ja) 2004-11-04
JP4386782B2 (ja) 2009-12-16
US7244051B2 (en) 2007-07-17

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