WO2007073721A1 - Phare dote d'un separateur de condensats - Google Patents

Phare dote d'un separateur de condensats Download PDF

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Publication number
WO2007073721A1
WO2007073721A1 PCT/DE2006/002261 DE2006002261W WO2007073721A1 WO 2007073721 A1 WO2007073721 A1 WO 2007073721A1 DE 2006002261 W DE2006002261 W DE 2006002261W WO 2007073721 A1 WO2007073721 A1 WO 2007073721A1
Authority
WO
WIPO (PCT)
Prior art keywords
headlight
headlamp
heat sink
air
heat
Prior art date
Application number
PCT/DE2006/002261
Other languages
German (de)
English (en)
Inventor
Robert Apfelbeck
Veit Schwegler
Frank Tebbe
Original Assignee
Odelo 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 Odelo Gmbh filed Critical Odelo Gmbh
Priority to EP06840874A priority Critical patent/EP1963737A1/fr
Publication of WO2007073721A1 publication Critical patent/WO2007073721A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/30—Ventilation or drainage of lighting devices
    • F21S45/33—Ventilation or drainage of lighting devices specially adapted for headlamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/42—Forced cooling
    • F21S45/43—Forced cooling using gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/60—Heating of lighting devices, e.g. for demisting
    • 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
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • 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
    • F21V29/90—Heating arrangements
    • 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 headlight with at least one headlight housing, with at least one arranged in the headlight source, at least one arranged in the headlight heat source and at least one, arranged in the light emission, the headlight limiting headlight glass, wherein a conveyor is arranged in the headlight, the air from the heat source along the headlight glass promotes.
  • the present invention is therefore based on the problem of developing a headlight, in which the amount of moisture in the headlight can be reduced.
  • This problem is solved with the features of the main claim.
  • a heat sink is arranged in the headlight.
  • the heat sink has a condensate drain, which connects the interior of the headlamp with the environment.
  • FIG. 1 longitudinal section through a headlight with a heat sink
  • FIG. 2 shows a longitudinal section through a headlight with an environment-controlled heat sink
  • Figure 3 longitudinal section through a headlamp with internal heat sink
  • Figure 4 longitudinal section through a headlight with two
  • FIG. 5 cross section through a heat sink according to FIG. 1;
  • FIG. 6 shows a cross section through a heat sink according to FIG. 2
  • FIG. 7 shows a cross section through a heat sink according to FIG. 4.
  • FIG. 1 shows a longitudinal section through a headlight (10), for example a motor vehicle headlight.
  • the headlamp (10) has a headlamp housing (20) in which, for example, three superimposed light sources (40) are arranged.
  • the spotlight housing (20) is closed by means of a headlight glass (30). At the same tig limits this headlight glass (30) the vehicle contour.
  • the headlight housing (20) is made of plastic, of a composite material, etc., for example. It is e.g. pot-shaped. At its open front, the headlamp housing (20) here has a mounting flange (21) on which the headlamp lens (30) consists, e.g. made of glass, plastic, etc., is attached.
  • the single headlight (10) may comprise a plurality of headlight housings (20). Also, the headlight housing (20) may be divided into several sections. The headlamp housing (20) can also have cooling elements for emitting the heat generated in the headlamp (10) into the environment (1).
  • the headlight (10) can be designed so that an exchange of air between the interior (15) and the environment (1) is possible.
  • compensation openings (14) in the rear wall (13) serve this purpose.
  • the sum of the exchange cross sections may be, for example, 100 square millimeters.
  • the headlight (10) is thus at least largely closed.
  • the individual light sources (40) are arranged in modules (100).
  • the modules (100) are used for the mutual positioning of the light source (40) and, for example, one of the respective light source (40) downstream lens (47). Instead of a single lens (47), a lens system can also be arranged here.
  • the modules (100) can be constructed in the form of a web or a frame, wherein, in the case of a frame-shaped construction, the frame has openings on one or more sides or has open side surfaces. chen has.
  • the modules (100) can be adjustable and adjustable individually or in groups, for example.
  • the single light source (40) is for example a luminescent diode (40), e.g. a light emitting diode. This is independent of their electrical components with respect to their housing form, e.g. from a light exit body (42) and a base (43).
  • the light exit body (42) has, for example, in the first approximation a hemispherical shape.
  • the height of the underlying base (43) is lower in this embodiment than the height of the light exit body (42).
  • the light emitting chip (41) is seated with respect to its geometric position e.g. in the lower region of the light exit body (42) in the vicinity of the base (43).
  • the light emitting chip (41) heated during operation of the light emitting diode (40) is at least thermally conductively connected to the circuit board (45).
  • the circuit board (45) For this purpose, e.g. around the base (43) of the LED (40) around a heat-conducting body on the board (45) arranged.
  • the light emitting chip (41) is arranged directly on the board (45), the light emitting chip (41) is electrically and thermally conductively connected to the circuit board (45).
  • the boards (45) of the individual light-emitting diodes (40) can be connected to each other at least thermally conductive. It is also conceivable to arrange a plurality of light-emitting diodes (40) on a printed circuit board (45).
  • heat sink (50) are arranged at the light emitting diodes (40) facing away from the boards (45). These comprise mutually parallel cooling fins (51) which are connected to the boards (45).
  • the individual cooling ribs (51) are interconnected by means of connecting ribs (52).
  • These connecting ribs (52) have openings (53).
  • the heat sinks (50) also have a different shape or have a different arrangement. Even with a structure of the modules (100) without a circuit board (45), the parts of the light-emitting diode (40) which are heated during operation of the light-emitting diode (40) are thermally conductively connected to the heat sinks (50), for example by means of a thermal paste.
  • the heat sink (60) comprises e.g. Condensation plate (61) with a condensate drain (64).
  • the condensation plate (61) is made, for example, of a homogeneous metallic material, e.g. made of aluminum, copper, zinc, an alloy, etc.
  • the material of the condensation plate (61) shown here has a thermal conductivity which is greater than 10 watts / (meter * Kelvin). If, for example, aluminum is used, this has a thermal conductivity of 237 W / (m * K).
  • the condensation plate (61) can also be made of a layered composite material or a coated material.
  • at least the cover layer facing the interior space (15) has a high thermal conductivity, e.g. greater than 10 W / (m * K).
  • This cover layer comprises the inner surface (62) of the condensation plate (61).
  • the remaining material layers may have a lower thermal conductivity.
  • the condensation plate (61) is, for example, a rectangular plate in plan view. Their length in this embodiment corresponds to half the length of the headlamp (10), their width, for example, 90% of the width of the headlight housing (20).
  • FIG. 5 shows a cross section of this condensation plate (61), wherein the sectional plane intersects the condensate outlet (64).
  • the here shown Asked condensation plate (61) has two outer guide surfaces (65) defining a central longitudinal groove (66).
  • the longitudinal channel (66) drops in the direction of the rear wall (13) of the headlight housing (20) and opens into the condensate drain (64).
  • the distance of the condensate drain (64) from the rear end of the condensation plate (61) is here, for example, one-tenth of the length of the condensation plate (61).
  • the fins (65) are e.g. obliquely arranged plane surfaces, which rise to the outside. These guide surfaces (65) can also have horizontal sections, they can be concave or convex, or have discontinuous surface sections.
  • the condensate drain (64) connects the interior (15) of the headlamp (10) with the environment (1). For example, it has a cross section of 75 square millimeters.
  • a check valve (69) is arranged, which opens at a pending from the interior (15) fluid pressure.
  • the condensation plate (61) described here is produced, for example, by prototyping, forming or by machining. Combinations of these production methods are conceivable.
  • the inner surface (62) is ground, for example.
  • the average roughness of this inner surface (62) is e.g. less than 6.3 microns.
  • the heat sink (60) may also be constructed differently than described.
  • the condensation plate (61) is in this embodiment with an electric cooling element (90), eg a Peltier element, connected. During operation of this electric cooling element (90), for example, a largely constant temperature of +5 degrees Celsius is generated on the inner surface (62). If the condensation plate (61) is made of a layered composite material, at least the thermally conductive inner surface (62) is connected to the electrical cooling element (90).
  • an electric cooling element eg a Peltier element
  • a fan (80) e.g. an axial fan (80) arranged.
  • Fan (80) attached to the housing (20).
  • the diameter of the fan (80) corresponds to e.g. the edge length of the heatsink (50) projected onto the floor (11).
  • the ventilator (80) shown here sucks from below through its suction opening (81).
  • the heat sink (60) is thus in the inlet of the fan (80).
  • the air outlet (82) is directed upwards, in the direction of the heat sink (50).
  • the heat generated by the light-emitting diodes (40) is conducted to the heat sinks (50).
  • the heat is released from the heat sinks (50) to the air in the interior (15) of the headlamp (10).
  • the heat sinks (50) act as heat sources (50).
  • the air temperature in the interior (15) increases - at least in the region of the heat sink (50) - up to an operating temperature. With increasing temperature and, for example, constant air pressure, the ability of the air to absorb moisture increases.
  • the fan (80) circulates the air in the interior (15) in the illustration of Figure 1 in the air conveying direction (85) in the counterclockwise direction. In this case, the air is conveyed from the air outlet (82) to the heat source (50).
  • the air flows through the heat sink (50), for example through the openings (53) - the air is heated and passed above the modules (100) to the headlamp lens (30).
  • guide means (19) are arranged for guiding the air flow.
  • the airflow hits at least approximately throughout
  • Width of the headlamp (10) on the headlight lens (30) in the upper area is directed downwards in the direction of the bottom (11).
  • the air flow is - while it flows on the inside of the headlight glass (30) along - cooled. In this case, the relative humidity of the air conveyed in the interior space (15) increases.
  • the condensation plate (61) From the air flow moisture condenses on the condensation plate (61). The condensation takes place for example as a film condensation. The absolute and the relative humidity of the headlight (10) promoted air is thereby reduced. In the case of a high amount of condensation, the condensation can also take place as dropwise condensation.
  • the inner surface (62) may be e.g. be provided with an oil film, which affects the heat conduction only slightly.
  • the condensate which is deposited on the guide surfaces (65), for example, is collected in the longitudinal channel (66) and flows into the condensate drain (64). Will the closing pressure of the Check valve (69) is exceeded, opens the check valve (69) and the condensate flows from the condensate drain (64) in the environment (1). Optionally, can be dispensed with the check valve (69).
  • the now further circulated air is reheated to the heat sinks (50) and cooled at the headlight glass (30), wherein the relative humidity of the air flow in the interior (15) increases. A portion of this moisture is then released back to the heat sink (60).
  • a separate heat source can be arranged in the headlight (10).
  • the fan (80) can also heat the circulated air.
  • the condensation plate (61) shown in FIGS. 1 and 5 has a high specific heat capacity.
  • this value is e.g. 0.888 kJ / (kg * K).
  • Variations in environmental conditions e.g. a sudden temperature jump, thus only leads to an inert reaction of the electric cooling element (90).
  • the cooling conditions in the interior (15) of the headlamp (10) are thus largely independent of the ambient conditions.
  • the condensation plate (61) may also be arranged vertically. The air flow then flows, for example, from bottom to top, while the condensate flows in the opposite direction.
  • the condensation plate may also have a convex, concave, etc. cross-section.
  • the air in the interior space (15) is, for example, during operation of the headlamp (10) to a value in a tolerance range of e.g. Cooled 2 degrees above the temperature of the heat sink (60).
  • the temperature of the heat sink (60) in the embodiment is one degree above the triple point of water at which all three phase states coexist. At temperatures below the triple point no condensation occurs. If the ambient temperature (1) is below this specific temperature, the risk of condensation on the headlight glass (30) does not increase - even if the outside temperatures continue to fall.
  • the heat sink (60) in this embodiment has a temperature which is above the freezing point of water. Thus, there is no danger that the condensate drain (64) freezes.
  • the temperature of the heat sink (60) and thus the Kondensatab- gäbe can be controlled by means of a control loop.
  • the measured variables of this control loop are the temperature and the ambient air pressure (1). These two quantities determine the maximum possible absolute moisture absorption of the air in the environment (1).
  • the headlamp (10) measures the temperature, air pressure and relative humidity. These three sizes determine the absolute humidity in the headlight (10). If necessary, can be dispensed with the determination of the air pressure. Is the absolute humidity in the headlight equal to or less than the maximum possible absolute humidity, ie the saturation humidity outside the headlight, there is no risk of condensation on the headlight glass (30). Turning on the conveyor (80) and the heat sink (60) to reduce the humidity in the interior is not required. However, the conveyor device (80) can be operated for heat removal from the heat sources (50).
  • the humidity control circuit will reduce the indoor humidity (15).
  • the conveying device (80) e.g. set to a medium flow rate.
  • the heat sink (60) is heated to a temperature, e.g. regulated in the range of the outside temperature.
  • the volume flow of the conveying device (80) can be increased or the temperature of the heat sink (60) can be reduced.
  • an additional heating in the headlight (10) may be arranged, which heats the interior (15) and thus prevents fogging of the headlight glass (30) in the short term.
  • the control loop can also be anticipatory, e.g. at a sinking outside temperature, the moisture in the headlight (10) are reduced.
  • the humidity is reduced to prevent fogging of the headlamp lens (30).
  • FIG. 2 shows a longitudinal section through a headlamp (10) with a heat sink (60), which is controlled by the environment (1).
  • the heat sink (60) is in this embodiment, a in the bottom (11) arranged condensation plate (61), which has to the interior oriented condensation ribs (67).
  • FIG. 6 shows a cross section through this condensation plate (61). The sectional plane is here, seen in the longitudinal direction of the headlamp (10), in the half of the condensation plate (61).
  • the condensation ribs (67) are, for example, on the guide surfaces (65).
  • each of the five condensation ribs (67) are arranged parallel to one another in the longitudinal direction. They have, adjacent to the fins (65), openings (71).
  • the openings (71) of the individual condensation ribs (67) are e.g. staggered against each other so as not to hinder the drainage of the condensate.
  • the shape and arrangement of the heat sink (60) can also be made as described in connection with the first embodiment.
  • the condensation plate (61) consists here of a homogeneous material and forms a thermal bridge between the interior (15) and the environment (1).
  • it is made of copper, tungsten-copper, copper-molybdenum, zinc, nickel, etc.
  • a copper condensing plate (61) has a thermal conductivity of 399 W / (m * K) and a specific heat capacity of 0.382 kJ / (kg * K).
  • the traveling wind (3) which is directed counter to the direction of travel, flows over the outer surface (63) of the condensation plate (61).
  • the condensation plate (61) assumes at least approximately the outside temperature due to its good heat conduction.
  • condensation takes place on the condensation plate (61) when the absolute humidity of the air flow is higher than the saturation air humidity at the temperature of the inner surface (62).
  • a lower temperature of the inner surface (62) quickly sets in with a sinking outside temperature due to the low specific heat capacity of the condensation plate (61) in this exemplary embodiment.
  • the condensation is enhanced. Temperature fluctuations thus immediately lead to the adaptation of the condensation rate. A fogging of the headlight glass (30) is thus prevented.
  • FIG. 3 shows a longitudinal section through a headlight with an internal heat sink (60).
  • the heat sink (60) in this embodiment is a condensation plate (61) which is mounted above the light modules (100) in the spotlight housing (20).
  • the condensate drain (64) is connected by means of a hose (68) with the environment (1).
  • the heat source (50) is also in this embodiment, a heat sink (50). This has, in order to allow a high heat dissipation, for example, three levels of connecting ribs (52) with openings (53).
  • the heat sink (60) is arranged in the inlet of the conveying device (80).
  • the latter is also in this embodiment, an axial fan (80).
  • the fan (80) the use of a centrifugal fan is conceivable - sits above the heat sink (50).
  • the air conveying direction (85) extends in this embodiment in a clockwise direction. The flow is forced, for example by means of baffles (19).
  • the air delivered by the fan (80) is passed through the heat sink (50) and heated there. It flows along the bottom (11) in the direction of the headlight glass (30). There the air rises.
  • the relative humidity of the inside (15) of the headlamp (10) promoted air increases while their temperature decreases. However, this temperature does not drop so far during the flow along the headlight glass that the humidity exceeds the saturation point.
  • condensation plate (61) On the condensation plate (61), which is held at a constant temperature, for example by means of a Peltier element (90), water condenses out of the air flow and flows through the condensate outlet (64) and the hose (68) into the environment (1).
  • a Peltier element (90) On the condensation plate (61), which is held at a constant temperature, for example by means of a Peltier element (90), water condenses out of the air flow and flows through the condensate outlet (64) and the hose (68) into the environment (1).
  • FIG. 4 shows a longitudinal section through a headlamp (10) with two partial air streams.
  • the heat sink (50) has horizontally arranged cooling fins (51).
  • the openings (53) of the connecting ribs (52) are aligned, for example, with breakthroughs of the boards (45) not shown here.
  • the fan (80) is vertical and is between the rear wall (13) of the headlamp (10) and the heat sink (50).
  • the heat sink (60), which is shown in cross section in FIG. 7, here comprises, for example, a condensation tube (72) and a collector (73) with a condensate drain (64).
  • condensation tube (72) Through the condensation tube (72), a liquid or gaseous coolant, e.g. a refrigerant to be promoted in the same or countercurrent. But also a flow with ambient air is conceivable.
  • the condensation tube (72) may also be connected to an electrical cooling element (90).
  • the condensation tube (72) may be part of a tube heat exchanger. This then has, for example, two concentric nested tubes. The in the interior (15) funded air flow is then passed, for example, through the inner tube, while the coolant flow flows through the outer tube. A design with coils is also conceivable.
  • the at the heat sink (50) heated air flow is, see. Figure 4, promoted by the interstices of the modules (100) in the direction of the headlight glass (30).
  • a part (86) of the air flow upwards is a part (86) of the air flow upwards, another part (87) deflected downward.
  • these partial air streams (86, 87) to the rear wall (13) to the suction port (81) of the fan (80) out.
  • the lower partial flow (87) covers the heat sink (60).
  • the condensed on the condensation tube (72) water flows into the collector (73) and in the condensate drain (64).
  • the condensate drain (64) then connects the interior (15) with the environment (1).
  • the heat sink (60) can be integrated into a control loop. But it can also have a set temperature value or be controlled by means of the wind (3) by heat conduction. Also in the upper partial flow (86), a heat sink (60) may be arranged. This can be carried out, for example, as shown in FIG.
  • heat sink (60) shown in FIGS. 2 and 6 can also be used in the exemplary embodiment according to FIG. Other combinations are also conceivable.
  • the length of the heat sink (60) may be greater than the length of the headlamp (10). For example, it can have horizontal and vertical areas.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un phare qui présente au moins un boîtier de phare, au moins une source de lumière disposée dans le phare, au moins une source de chaleur disposée dans le phare et au moins un verre de phare qui délimite le phare et qui est disposé dans la direction d'émission de la lumière. Un dispositif de transport qui transporte de l'air depuis la source de chaleur et le long du verre du phare est disposé dans le phare. Dans ce but, un drain de chaleur est disposé dans le phare. Le drain de chaleur présente une évacuation de condensats qui relie l'espace intérieur du phare à l'environnement. La présente invention permet ainsi d'obtenir un phare dans lequel la quantité d'humidité peut être diminuée.
PCT/DE2006/002261 2005-12-16 2006-12-15 Phare dote d'un separateur de condensats WO2007073721A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06840874A EP1963737A1 (fr) 2005-12-16 2006-12-15 Phare dote d'un separateur de condensats

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005060736A DE102005060736B4 (de) 2005-12-16 2005-12-16 Scheinwerfer mit Kondensatabscheider
DE102005060736.5 2005-12-16

Publications (1)

Publication Number Publication Date
WO2007073721A1 true WO2007073721A1 (fr) 2007-07-05

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Application Number Title Priority Date Filing Date
PCT/DE2006/002261 WO2007073721A1 (fr) 2005-12-16 2006-12-15 Phare dote d'un separateur de condensats

Country Status (3)

Country Link
EP (1) EP1963737A1 (fr)
DE (1) DE102005060736B4 (fr)
WO (1) WO2007073721A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009076323A (ja) * 2007-09-20 2009-04-09 Koito Mfg Co Ltd 車両用灯具
US8985824B2 (en) 2008-07-24 2015-03-24 Koito Manufacturing Co., Ltd. Automotive lamp having fan
JP2016062772A (ja) * 2014-09-18 2016-04-25 市光工業株式会社 車両用灯具
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JP2016062772A (ja) * 2014-09-18 2016-04-25 市光工業株式会社 車両用灯具
US10746373B2 (en) 2016-10-06 2020-08-18 Flex-N-Gate Advanced Product Development, Llc Condensation collection device
CN108397742A (zh) * 2018-04-13 2018-08-14 华域视觉科技(上海)有限公司 防起雾车灯及汽车

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