EP3169935A1 - Projecteur muni d'une source lumineuse à led - Google Patents

Projecteur muni d'une source lumineuse à led

Info

Publication number
EP3169935A1
EP3169935A1 EP15749992.2A EP15749992A EP3169935A1 EP 3169935 A1 EP3169935 A1 EP 3169935A1 EP 15749992 A EP15749992 A EP 15749992A EP 3169935 A1 EP3169935 A1 EP 3169935A1
Authority
EP
European Patent Office
Prior art keywords
coolant
light source
headlight according
cooling
led light
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Withdrawn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
EP15749992.2A
Other languages
German (de)
English (en)
Inventor
Erwin Melzner
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.)
Arnold and Richter Cine Technik GmbH and Co KG
Original Assignee
Arnold and Richter Cine Technik GmbH and Co KG
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 Arnold and Richter Cine Technik GmbH and Co KG filed Critical Arnold and Richter Cine Technik GmbH and Co KG
Publication of EP3169935A1 publication Critical patent/EP3169935A1/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Withdrawn legal-status Critical Current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
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/57—Cooling arrangements using liquid coolants characterised by control arrangements
    • 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
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/58—Cooling arrangements using liquid coolants characterised by the coolants
    • 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
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/04—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
    • 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
    • F21V29/56—Cooling arrangements using liquid coolants
    • F21V29/59—Cooling arrangements using liquid coolants with forced flow of the coolant
    • 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
    • F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
    • F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
    • F21V29/673—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for intake
    • 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
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • 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
    • F21V3/00—Globes; Bowls; Cover glasses
    • F21V3/04—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings
    • F21V3/10—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings
    • F21V3/12—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by coatings the coatings comprising photoluminescent substances
    • 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
    • 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
    • F21V31/005—Sealing arrangements therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/40—Lighting for industrial, commercial, recreational or military use
    • F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
    • 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
    • F21Y2105/00—Planar light sources
    • F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
    • 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 invention relates to a headlamp with an LED light source according to the preamble of claim 1.
  • the operation of LEDs as well as of electronic components is associated with a significant power loss, which is released in the form of heat.
  • the packing density of the LEDs or electronic components is steadily increased, so that a large amount of heat is emitted in a confined space, which leads to a deterioration in the function and life of the LEDs or electronic Components leads.
  • liquid cooling systems are used for increased heat dissipation.
  • a cooler for example, CPU cooler
  • the latter is also referred to as a cooling plate.
  • Both indirect and direct cooling systems also have two-phase versions. In this case, one exploits the even higher heat output, which results from the phase transition of the coolant, for example during the evaporation of water.
  • Such cooling systems are known, for example, under the designations boiling water cooling or evaporative cooling. If there is a requirement that the radiator or coolant must be cooled below the ambient air temperature, then a dual-circuit cooling system must be used. This also applies if the temperature of the cooling plate or the coolant must be precisely controlled. It is then usual to use a recooling system or a water exchange system.
  • a recooling system has, in addition to the primary coolant circuit, a secondary refrigerant circuit.
  • the refrigerant is cooled by the refrigerant as it passes through an evaporator.
  • the refrigerant absorbs the heat energy, evaporates and is re-liquefied by means of a compressor and a condenser. During condensation, the heat is released via a radiator with fan to the ambient air.
  • the coolant from the primary circuit is passed through a heat exchanger where it is cooled by the colder operating water.
  • the process water is supplied here from outside Shen.
  • an LED light source 1 soldered on a printed circuit board 2 on a Cooling plate 3 'mounted, which through inlets and outlets 31, 32 of cooling water through If the LED light source 1 is mounted in front of a stepped lens and movably mounted along the optical axis of an LED headlamp, this results in a simple focus on a wide range of less than 10 ° to over 60 ° focusable LED headlamps.
  • Fig. 20 shows a schematic functional representation of such a cooling system according to the prior art.
  • the LED light source 1 is thermally coupled to a cooling plate 3 'which is connected to a coolant line 8.
  • the coolant line 8 is thermally coupled to produce a large heat-emitting surface with a heat sink 71, wherein a fan 70 generates a cooling air flow, which generates a cooling air flow directed toward the heat sink 71 for re-cooling the coolant flowing in the coolant line 8.
  • the circulating air cooling device 7 furthermore has a coolant reservoir 72 for the coolant and a coolant pump 73 for generating a circulating coolant flow.
  • a major disadvantage of the indirect water cooling described above is that the power density of the LED light source is limited by the thermal conductivity of the materials used of the printed circuit board receiving the LED light source and the cooling plate. Such a cooling system is no longer suitable for cooling compact LED light sources whose power density is above approximately 50 W / cm 2 .
  • the present invention is therefore based on the object to provide a headlamp with an LED light source of the type mentioned, which allows a compact design, a high power density and high durability.
  • the solution according to the invention realizes a headlamp with a compact LED light source, which allows a high power density of, for example, more than about 50 W / cm 2 without limiting the life or the optical properties of an LED headlamp, as arranged on a circuit board light emitting diodes in a liquid-tight or gas-tight enclosing housing, which has at least one light exit surface through which exits the light emitted from the LED light source, and on the walls has housing openings serving as a coolant inlet and coolant outlet for a liquid or gaseous coolant are formed.
  • the coolant inlet and the coolant outlet for achieving an optimum flow through the housing and thus cooling the LED light source are diametrically opposite one another on the side walls of the housing between the printed circuit board and the light exit. surface arranged.
  • the housing can surround both the LED light source and a cooling element connected to the printed circuit board, in particular consisting of cooling fins, so that a coolant flows around both the LED light source and the cooling element and the heat absorbed via a cooling system to the environment or emits to a heat receiving device.
  • LEDs ready-made light-emitting diodes ("packages") in ceramic or plastic housings can be used which are mounted on a printed circuit board
  • LED chips or “dies” without housings can be used, which are “chip-on-board” LED chips and finished LEDs may be covered with an optically inactive material, such as silicon, or with an optically active material, such as a phosphor or applied to a substrate, such as "remote phosphor” technology, to support the cooling effect
  • an optically inactive material such as silicon
  • an optically active material such as a phosphor or applied to a substrate, such as "remote phosphor” technology
  • it is advantageous to continue to use the LED light source to mount on a very good thermal conductivity PCB in particular on a so-called “metal core printed circuit board” (MCPCB), which consists of a core of aluminum or Ku pfer, a very good thermally conductive dielectric and a copper overlay with soldering surfaces.
  • MPCB metal core printed circuit board
  • a ceramic board with integrated metallic pads can be used.
  • the cooling of the circuit board is advantageously carried out with a metallic cooling plate, which is flowed through by a cooling liquid and which is thermally coupled to the LED light source remote from the back of the circuit board.
  • the LED light source is therefore surrounded by a liquid-tight or gas-tight housing having one or more inlets and outlets for the coolant, which flows around the LED light source directly.
  • Suitable coolants are preferably non-conductive and non-corrosive liquids with high heat capacity in question, such as fluorosurfactants or ultrapure water with anti-corrosive additives.
  • the housing is provided with a window made of glass, transparent optical plastic or the like, which is also tightly installed.
  • the optical window may consist of a plane-parallel plate or of a structure with curved or stepped surfaces such as a lens, a lens array or a light mixing rod (taper), so that a certain beam shaping and / or color mixing is already performed at this point.
  • Dynamic beamforming may be achieved through an optical window that is liquid-tight but movably disposed in front of the LED light source.
  • the optical window can be coated with a phosphor according to the above-mentioned "remote phosphor" technology, which converts, for example, the light emitted by blue LEDs into white light.
  • the optical window, the surface and possibly the primary optics of the LED light source as well as the cooling liquid must also be matched with regard to their refractive index and their spectral transmission and spectral reflection to achieve the desired photometric result, such. to achieve a certain beam angle or a specific light output. Furthermore, it may be necessary to use other optical elements, e.g. Reflectors and diaphragms in the housing to install.
  • the LED light source itself is preferably surrounded by an inert liquid as a coolant with certain thermal and optical properties, while for cooling via the cooling plate usually water with suitable additives to prevent calcification and corrosion is used.
  • water with suitable additives to prevent calcification and corrosion is used.
  • the cooling circuits for the cooling of the circuit board and for the cooling of the LED light source can also be combined in a cooling circuit and thus connected in series or in parallel, if in both circuits the same inert coolant is used.
  • the light emitted by the LEDs changes depending on the temperature of the semiconductor layer. It is known that not only does the brightness of the LEDs decrease with increasing temperature, but also that the spectrum shifts so that the color location of a hot LED light source differs from the color location of the same but cold LED light source. To compensate for these effects, a multicolor LED light source with a temperature-controlled electronic control according to WO 2009/034060 can be constructed, with which the color locus is kept stable over the temperature with great accuracy.
  • a liquid cooling system and in particular a recooling system or water exchange system is used, then it is also possible to stabilize the temperature of the LED light source by controlling the coolant temperature or the coolant flow so that control of the electronic control of the LEDs can be dispensed with.
  • the fan in a recirculating air cooling system, can also be controlled so that the heat emission to the ambient air is controlled.
  • a mixed operation between the two control systems may be useful. If e.g. the cooling system is designed in a compact design for normal operation up to a certain ambient temperature, then it is possible to work up to this temperature with the coolant control and LED stabilization as described above. From this temperature can then use an intensive operation in which the color locus of the LEDs is stabilized by their electronic control.
  • the LED light source Since the light emitted by the LED light source is radiated into the far field after passing at least one lens or a reflector and may possibly strike a large receiver surface (scene, actor or the like), it must also have a spatially and temporally homogeneous brightness. and color distribution. Therefore, static light spots, shadows or color spots as well as temporal fluctuations in brightness or color are generally permissible. This can only be achieved if the coolant itself is homogenous, ie has no suspended particles or density fluctuations, and if it is moved and heated in a controlled manner within the housing so that no optically active Density variations occur, which would lead to a whirling or flickering in the light field.
  • the cooling system has at least one recooling device with a coolant reservoir, a coolant pump, a heat sink, cooling fins or cooling fins and a fan.
  • the entire cooling system or a part of the heat exchanger may be formed as a heat-receiving cooling battery, which is flanged to the light source or to the coolant line, absorbs thermal energy for a limited time and then replaced, i. is replaced by a prepared for receiving heat energy cooling battery.
  • the weight, the size or the noise of the coolant pump and the cooling body or cooling fins or cooling fins blowing fans are so large that no manageable LED headlights can be built more.
  • the limiting factor here is the heat transfer coefficient from the heat sink or the cooling fins or cooling fins to the ambient air. Therefore, a compromise between weight, size and volume is sought, which means in the case of professional studio and film headlights that the cooling system or the recooling device from coolant reservoir, coolant pump, cooling fins or cooling fins and fan no longer installed in the LED headlights, but is operated or installed outside of the LED headlight.
  • a water exchange system consisting of a central cooling device and a central coolant distribution similar to a sprinkler extinguishing system can be installed.
  • the LED headlamps require standardized coolant connections for entry and exit as well as an electronic and possibly software-technical interface for the control and regulation.
  • the power supply for the LED headlights - which is provided today by a so-called.
  • Ballast (ballast) - and the cooling system in accordance with another feature of the invention a common device installed.
  • the combined supply and cooling system can then be detached from the LED headlight and from the front of the vehicle like a ballast possibly noise-sensitive environment.
  • To the LED headlamp then lead the power supply lines, the cooling hoses and the interface for the control and regulation of the cooling system.
  • a central cooling system can take over the dissipation of heat to the ambient air, while the LED headlights are equipped with only a coolant pump or an auxiliary pump and a heat exchanger.
  • a two-stage cooling system can be constructed so that the components of the re-cooling system are arranged outside of the LED headlamp, while, for example, the cooling plate and the secondary circuit are installed to save space in the LED headlights themselves.
  • the supply voltage, the electrical control signals or interfaces and the coolant hoses are advantageously combined in a single hybrid cable to facilitate handling.
  • generator vehicles are usually used for the supply.
  • the generators provide the mains voltage with which the LED headlamps are operated directly or via their ballasts.
  • a central cooling unit with a central coolant distribution and coolant control in the generator vehicle, to which the LED headlights are connected. Individual combined supply and cooling systems are thus not required in such a configuration and the existing ballasts or power supply units can continue to be operated.
  • the generator vehicle thus provides the mains voltage supply and the coolant supply and / or refrigerant supply for all connected LED headlights.
  • 1 to 3 a side view, isometric view and a plan view of an LED light source with mounted on a cooled circuit board and surrounded by a liquid-tight housing and surrounded by an inert coolant around LED's; 4 to 6 different optical windows in the housing surrounding the LEDs in a section along the line AA of FIG. 3; 7 to 9 a side view, isometric view and plan view of an LED light source with a printed circuit board with LEDs mounted thereon and a housing surrounding a cooling plate, which is flowed through by a coolant flowing in a cooling circuit; 10 shows a longitudinal section through the LED light source along the line BB according to FIG.
  • FIG. 1 to 15 a schematic representation of a cooling circuit of an inert coolant flowing through a cooling plate, which is thermally coupled to a printed circuit board with LEDs mounted thereon, and / or flowing around the LEDs as well as being recooled in a recooling device;
  • Fig. 16 is a schematic representation of a cooling plate, which is thermally coupled to the LEDs receiving circuit board, flowing through the primary cooling circuit and connected via a heat exchanger to the primary cooling circuit, the mounted on the PCB LEDs secondary cooling circuit and
  • 17 to 20 is a schematic representation of a cooling system according to the prior art with a coolant flowed through by a cooling plate, which is thermally coupled to a PCB receiving the LEDs.
  • LED light source 1 has a with a printed circuit board 2 thermally tightly coupled cooler 3, which of a coolant is flowed through, which is guided in a first coolant line 81, which is connected via a first coolant inlet 31 and a first coolant outlet 32 to the radiator 3.
  • the heat absorbed by the coolant is dissipated to the environment or to heat by means of a cooling system 7a to 7e. given direction, so that during operation of the LED light source 1, a substantially constant temperature on the circuit board 2 can be adjusted with the LEDs mounted thereon.
  • LEDs of the LED light source 1 are of a preferably flat, the Form of the LED light source 1 adapted, generally cuboidal or circular housing 4 surrounded, which is connected via a second coolant inlet 41 and a second coolant outlet 42 to a second coolant line 82 of a cooling system 7a to 7d as shown in FIG. 1 1 to 14, so that the cooling liquid guided in the first coolant line 81 flows directly around the LEDs of the LED light source 1.
  • the heat absorbed by the coolant is released to the environment or to a heat-absorbing device - Taking device in the form of a cooling battery 300 according to the schematic representation in Fig. 15 are flanged directly to the LED light source 1.
  • the surface of the wall of the housing 4 surrounding the LED light source 1 opposite the LED light source 1 has an optical window 5 which has different optical properties and, as shown in FIG. 4 of a plane-parallel glass or plastic plate 50 or a structure with curved or stepped surfaces such as a lens array 51 according to FIG. 5, a lens array, a diffusion plate 52 according to FIG. 6 or a light mixing rod, in order to carry out beam shaping and / or color mixing already at the optical window 5.
  • dynamic beam shaping can be achieved by a liquid-tight, but movably arranged in front of the LED light source 1 optical window.
  • the second exemplary embodiment of an LED light source 1 shown in different views and in a longitudinal section in FIGS. 7 to 10 differs from the first exemplary embodiment described above with reference to FIGS. 1 to 6 and 11 and 12 in that the housing 40 is not only the mounted on a printed circuit board 2 LED light source 1, but also consisting of cooling fins, cooling pins or the like existing cooling element 30 so that guided in a first coolant line 81 and entering the housing 40 via the coolant inlet 41 and the coolant outlet 42nd
  • the housing 40 leaving coolant flows around both the LED light source 1 and the cooling element 30 and delivers the absorbed heat via a cooling system 7 to the environment or to a heat receiving device.
  • the optical window 5 arranged in the emission direction of the LEDs in front of the LEDs 1 can be designed analogously to the illustrations of FIGS. 4 to 6 as a plane-parallel plate or as a lens, lens array or light mixing rod in order to carry out beam shaping and / or color mixing.
  • dynamic beam shaping can be achieved by means of an optical window 5 which is liquid-tight but movably arranged in front of the LED light source 1. It can be coated with phosphor and thus fulfill the function of a "remote phosphor" light source.
  • the mounted on the circuit board 2 LEDs 1 are connected to a power cable 14 which is connected to an electronic control, a power supply or ballast 12.
  • the control unit, power supply or ballast 12 is connected via a power cable 13 to a voltage source.
  • 1 to 16 are intended to explain various cooling systems 7a to 7e, but the type of cooling and recooling is not limited to the illustrated systems.
  • the circulating-air cooling system 7a shown in FIG. 11 includes a cooling body 71 thermally coupled to the coolant lines 81, 82, a fan 70 for generating a cooling air flow directed onto the heat sink 71, and a coolant reservoir or tank 72 for the coolant and a coolant pump 73 for generating a circulating coolant flow.
  • FIG. 12 shows a schematic representation of a cooling system designed as a re-cooling system 7b with primary coolant circuit and secondary coolant circuit with a mechanical cooling device consisting of a heat exchanger designed as an evaporator 74 with primary-side connection to the coolant lines 81, 82 and secondary side connection to a refrigerant line 77, which connects the evaporator 74 via a compressor 76 with a capacitor 75.
  • the capacitor 75 has in this embodiment analogous to the arrangement shown in FIG. 1 1, a fan 70 and a heat sink 71, which emits the transported via the refrigerant line 77 amount of heat to the environment.
  • the primary-side connection of the evaporator 74 corresponds to the arrangement according to FIG. 11 with a Coolant reservoir or tank 72 and a coolant pump 73 for generating a circulating coolant flow.
  • the refrigerant is cooled by the refrigerant as it passes through the evaporator 74.
  • the refrigerant absorbs the heat energy, vaporizes and is re-liquefied by means of the compressor 76 and the condenser 75, wherein during the condensation the heat is released by means of the fan 70 and heat sink 71 to the ambient air.
  • the compressor 76 and the condenser 75 absorbs the heat energy, vaporizes and is re-liquefied by means of the compressor 76 and the condenser 75, wherein during the condensation the heat is released by means of the fan 70 and heat sink 71 to the ambient air.
  • the cooling system consists of a water exchange system 7c with a heat exchanger 78 which is connected on the primary side to the coolant lines 81, 82, the coolant reservoir 72 for the coolant and the coolant pump 73 for generating a circulating coolant flow, while the heat exchanger 78 Secondary side of the service water pipes 84, 85 is connected.
  • this water exchange system 7c the coolant from the primary circuit is passed through the heat exchanger 78, where it is cooled by the colder operating water supplied from the outside.
  • FIG. 14 shows a schematic representation of the use of a heat-absorbing device designed as a cooling battery 300 in an indirect cooling battery system 7d, in which the cooling battery 300 is flanged onto the coolant lines 81, 82.
  • a heat exchanger 79 is connected on the primary side to the coolant circuit consisting of the coolant lines 81, 82, the coolant reservoir 72 for the coolant and the coolant pump 73 for generating the circulating coolant flow and secondary side with a corresponding device for receiving the cooling battery 300 or for flanging the cooling battery 300 is provided.
  • Fig. 15 shows a schematic representation of the formation of a cooling system as a heat-absorbing direct cooling battery system 7e with a cooling battery 300, which is flanged directly to the LED light source 1 receiving housing 4, 40 or to the coolant line.
  • the cooling battery 300 absorbs the heat energy emitted by the LED light source 1 for a limited time and is then replaced by a second cooling battery 300 prepared for receiving heat energy when a predetermined temperature is reached.
  • the coolant flowing around the LED light source 1 is guided in a coolant line 83, which lasts one second.
  • Därniklauf forms and is thermally coupled via a heat exchanger 9 with a primary cooling circuit having a coolant line 81, which is connected via the firstdeffenein- lass 31 and firstdeffenauslass 32 with the cooling plate 3 and a cooling system 7.
  • the secondary cooling circuit has a reservoir 10 for receiving coolant and a coolant pump 1 1 for transporting the coolant through the secondary circuit.
  • the cooling system 7 can be designed analogously to the cooling systems 7a to 7c described above with reference to FIGS. 11 to 13.
  • cooling element (cooling fins, cooling pins)

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)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un projecteur muni d'une source lumineuse à LED qui comprend au moins une diode électroluminescente placée sur une plaquette de circuit imprimé, et qui est agencée dans un boîtier qui entoure la source lumineuse à LED et qui présente au moins une surface de sortie de la lumière à travers laquelle sort la lumière émise par la source lumineuse à LED. Selon l'invention, le boîtier entoure la source lumineuse à LED de manière étanche au liquide ou au gaz, et présente au moins une entrée de fluide de refroidissement et une sortie de fluide de refroidissement pour un fluide de refroidissement liquide ou gazeux.
EP15749992.2A 2014-07-18 2015-07-20 Projecteur muni d'une source lumineuse à led Withdrawn EP3169935A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202014103329.7U DE202014103329U1 (de) 2014-07-18 2014-07-18 Scheinwerfer mit einer LED-Lichtquelle
PCT/EP2015/066539 WO2016009089A1 (fr) 2014-07-18 2015-07-20 Projecteur muni d'une source lumineuse à led

Publications (1)

Publication Number Publication Date
EP3169935A1 true EP3169935A1 (fr) 2017-05-24

Family

ID=51629323

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15749992.2A Withdrawn EP3169935A1 (fr) 2014-07-18 2015-07-20 Projecteur muni d'une source lumineuse à led

Country Status (8)

Country Link
US (1) US20170167712A1 (fr)
EP (1) EP3169935A1 (fr)
KR (1) KR20170039194A (fr)
CN (1) CN106716004A (fr)
CA (1) CA2955273A1 (fr)
DE (1) DE202014103329U1 (fr)
MX (1) MX2017000744A (fr)
WO (1) WO2016009089A1 (fr)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016044246A1 (fr) * 2014-09-15 2016-03-24 D Onofrio Nicholas Michael Carte de circuit imprimé à noyau métallique refroidi par liquide
DE102015114360A1 (de) 2015-08-28 2017-03-02 Hella Kgaa Hueck & Co. Scheinwerfer mit einer verbesserten Entwärmung von Halbleiterlichtquellen
DE102015121421A1 (de) * 2015-10-27 2017-04-27 Jan Gawarecki Verfahren zur Herstellung eines Schutzkittels und entsprechender Schutzkittel
FR3054298A1 (fr) * 2016-07-22 2018-01-26 Valeo Vision Projecteur de lumiere de vehicule
WO2018018794A1 (fr) * 2016-07-27 2018-02-01 麦健文 Système de dissipation de chaleur pour lampe à del
DE102016114694A1 (de) * 2016-08-09 2018-02-15 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Scheinwerfer sowie Lichtquellenanordnung für einen Scheinwerfer
US10634335B2 (en) * 2017-01-18 2020-04-28 Fujian Sanan Sino-Science Photobiotech Co., Ltd. Easily formed liquid cooling module of an LED lamp
CN107246579A (zh) * 2017-07-27 2017-10-13 湖州明朔光电科技有限公司 石墨烯智联led车前大灯
US10611332B2 (en) * 2017-09-06 2020-04-07 Ford Global Technologies, Llc Collapsible fluid reservoir in a vehicle for pedestrian protection
DE102018101988A1 (de) * 2018-01-30 2019-08-01 HELLA GmbH & Co. KGaA Scheinwerfer für ein Fahrzeug mit einer Kühleinrichtung für ein Halbleiterleuchtmittel
US10768677B2 (en) 2018-04-13 2020-09-08 Cooler Master Technology Inc. Heat dissipating device having colored lighting and persistence effect
CN109708015A (zh) * 2018-12-28 2019-05-03 上海太易检测技术有限公司 一种用于色选机灯箱的灯管装置
US11047560B2 (en) * 2019-05-29 2021-06-29 Nbcuniversal Media, Llc Light emitting diode cooling systems and methods
US11333342B2 (en) * 2019-05-29 2022-05-17 Nbcuniversal Media, Llc Light emitting diode cooling systems and methods
CN112698541A (zh) 2019-10-22 2021-04-23 中强光电股份有限公司 散热模块及使用其的投影装置
DE102019134028A1 (de) 2019-12-11 2021-06-17 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Ausrüstungssystem für kinematografische Produktionen
TWM616775U (zh) * 2021-03-31 2021-09-11 訊凱國際股份有限公司 複合式冷卻系統
CN113324232B (zh) * 2021-06-01 2022-10-11 江苏省德懿翔宇光电科技有限公司 一种曲面导热自适应大功率led模组
WO2023193915A1 (fr) * 2022-04-07 2023-10-12 Peschl Ultraviolet Gmbh Radiateur de surface, dispositif comprenant le radiateur de surface et utilisation du radiateur de surface
CN115111545B (zh) * 2022-07-12 2023-02-03 嘉兴市永帝照明电器有限公司 一种散热效果好直发光可换灯条面板灯
US12025302B1 (en) 2023-04-28 2024-07-02 NBCUniversal Studios LLC Light emitting diode lighting systems and methods

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006319103A (ja) * 2005-05-12 2006-11-24 Nitto Kogaku Kk 発光ダイオードの冷却装置
WO2006119582A1 (fr) * 2005-05-13 2006-11-16 Tama Berkeljon Appareil d’eclairage
DE102007044556A1 (de) * 2007-09-07 2009-03-12 Arnold & Richter Cine Technik Gmbh & Co. Betriebs Kg Verfahren und Vorrichtung zur Einstellung der farb- oder fotometrischen Eigenschaften einer LED-Beleuchtungseinrichtung
DE202009007426U1 (de) * 2009-05-25 2010-10-14 Zumtobel Lighting Gmbh Anordnung zur Lichtabgabe mit Leuchtelementen
US8789973B2 (en) * 2010-04-23 2014-07-29 Wavien, Inc. Liquid cooled LED lighting device
US9752738B2 (en) * 2011-04-06 2017-09-05 Sportsbeams Lighting, Inc. LED based searchlight/sky light
EP2718624B8 (fr) * 2011-06-10 2017-06-28 Martin Professional ApS Dispositif d'éclairage à puits thermique multicouche
WO2013036539A2 (fr) * 2011-09-05 2013-03-14 Robe Lighting, Inc. Système de refroidissement amélioré pour luminaires à led
DE102011083698A1 (de) * 2011-09-29 2013-04-04 Osram Gmbh Flüssigkeitskühlung für led-leuchtvorrichtungen
CN103742864B (zh) * 2012-02-06 2016-03-23 马丁专业公司 具有逆反射器的灯反射器系统
EP2661598B1 (fr) * 2012-02-21 2018-08-01 Huawei Technologies Co., Ltd. Système de refroidissement et procédé pour refroidir un élément générateur de chaleur

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016009089A1 *

Also Published As

Publication number Publication date
MX2017000744A (es) 2017-11-30
CN106716004A (zh) 2017-05-24
KR20170039194A (ko) 2017-04-10
DE202014103329U1 (de) 2014-09-12
CA2955273A1 (fr) 2016-01-21
WO2016009089A1 (fr) 2016-01-21
US20170167712A1 (en) 2017-06-15

Similar Documents

Publication Publication Date Title
EP3169935A1 (fr) Projecteur muni d'une source lumineuse à led
EP2223014B1 (fr) Projecteur à del
DE102005060736B4 (de) Scheinwerfer mit Kondensatabscheider
DE102008013604B4 (de) Kühlvorrichtung für ein Steuergerät einer Beleuchtungseinrichtung eines Kraftfahrzeugs
DE112008003616T5 (de) Fahrzeugscheinwerferleuchte
DE102004047324A1 (de) Leuchtdiodenanordnung
DE112017005809T5 (de) Licht-emissionsvorrichtung, elektronisches gerät, beleuchtungsapparat und fahrzeugscheinwerfer
DE102005005753A1 (de) Beleuchtungseinrichtung mit mindestens einer Leuchtdiode und Fahrzeugscheinwerfer
DE102013105289A1 (de) Lampe mit einer flexiblen Leiterplatte
DE112011106000T5 (de) Thermomanagement für Leuchtdioden
EP2834552B1 (fr) Dispositif d'éclairage pour véhicule automobile
AT524690B1 (de) Leuchtmittel mit led
EP2376829B1 (fr) Système d'éclairage à base de diodes del
DE102010001007B4 (de) Leuchte zum Ausleuchten eines Zielbereiches mittels Rückwärtsreflexion von Licht eines Leuchtdiodenmoduls an einem Reflektor
DE102014113387B4 (de) Kraftfahrzeugscheinwerfer mit thermisch optimierter Displayeinheit
DE102008022834A1 (de) Beleuchtungseinrichtung
WO2012022662A1 (fr) Source lumineuse
DE102006022351A1 (de) Vorrichtung zur Raumtemperaturregulierung und Raumbeleuchtung
WO2006066532A1 (fr) Dispositif d'eclairage ayant au moins une diode electroluminescente et phare
DE102015208569A1 (de) Leuchtmittel mit LEDs
DE102008016097B4 (de) Beleuchtungseinrichtung und Abdeckungselement
WO2007068236A1 (fr) Lampe del avec socle
DE202019100225U1 (de) Leuchte
DE102021131126A1 (de) Leuchtenbaugruppe und Verfahren zur Herstellung einer Leuchtenbaugruppe
AT11934U1 (de) Led-lampe mit verdampfungskühlung

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20170202

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20190724

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: ARNOLD & RICHTER CINE TECHNIK GMBH & CO. BETRIEBS KG

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20191204