WO2017207228A1 - Dispositif d'éclairage - Google Patents

Dispositif d'éclairage Download PDF

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Publication number
WO2017207228A1
WO2017207228A1 PCT/EP2017/061167 EP2017061167W WO2017207228A1 WO 2017207228 A1 WO2017207228 A1 WO 2017207228A1 EP 2017061167 W EP2017061167 W EP 2017061167W WO 2017207228 A1 WO2017207228 A1 WO 2017207228A1
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WO
WIPO (PCT)
Prior art keywords
lighting device
phosphor
light
primary light
phosphor body
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.)
Ceased
Application number
PCT/EP2017/061167
Other languages
German (de)
English (en)
Inventor
Krister Bergenek
Dennis Sprenger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram GmbH
Original Assignee
Osram GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Osram GmbH filed Critical Osram GmbH
Publication of WO2017207228A1 publication Critical patent/WO2017207228A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • F21S41/16—Laser light sources
    • 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
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • 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
    • F21S45/48—Passive cooling, e.g. using fins, thermal conductive elements or openings with means for conducting heat from the inside to the outside of the lighting devices, e.g. with fins on the outer surface of the lighting device

Definitions

  • the invention relates to a lighting device
  • the invention is particularly advantageous applicable to vehicle lights, especially headlights.
  • LARP Laser Activated Remote Phosphor
  • primary light is generated with the aid of a laser and irradiated onto a phosphor layer which is at a distance therefrom.
  • the phosphor converts the - e.g. blue - primary light partially in - e.g. yellow - secondary light around, resulting in a -. white - mixed light with high radiation density results, which can be coupled out as useful light. This is often a
  • Useful light is emitted from the other side. Due to the high radiation density of the incident primary light, it is necessary to provide sufficient cooling of the phosphor layer (e.g., to suppress quenching and material degradation and to minimize a temperature-dependent change in the wavelength of the secondary light). This is difficult in transmissive LARP structures in which the phosphor is illuminated, since the materials used in this case generally do not have sufficiently high thermal conductivities.
  • thermally conductive, transparent materials as
  • Bonding layers a thermal bottleneck, since they have a very low thermal conductivity of typically less than 1 W / (mK). It is also known to actively cool phosphor layers, which is not possible in many applications.
  • the other side can be applied flat on a heat sink (heat spreader, heat sink, etc.), which greatly facilitates heat dissipation.
  • the reflective structure does not rely on the less thermally conductive transparent phosphor materials. However, the reflective structure is not suitable for many applications.
  • EP 1643567 B1 discloses a luminescence diode chip with a semiconductor layer sequence which is suitable for a
  • the converter layer is specifically structured to set a dependency of the resulting color locus from a viewing angle.
  • the invention comprises a method for producing a luminescence diode chip, in which a converter layer is structured in a targeted manner.
  • the optically transmissive element is configured to receive stimulating light, such as laser light, through its first end surface and direct it to the phosphor layer.
  • the stimulating light is converted by the phosphor layer into wavelength-converted light.
  • the converted light is collected and conducted by the transmitting element and finally leaves its first end surface for further use.
  • the optically transmitting element consists of an optically transparent material with good
  • thermal properties to facilitate heat transfer from the phosphor layer.
  • the heat transfer can be further improved by attaching a heat sink to the phosphor layer by thermal grease.
  • WO 2013/144053 A1 discloses a lighting device with a heat sink and at least one phosphor body, wherein the at least one phosphor body is arranged with its back on the heat sink and is occupied on its front to be irradiated with a transparent layer, which has at least the same high thermal conductivity as the phosphor body.
  • WO 2014/009289 AI discloses an illumination device with at least one laser light source and at least one TIR optics, in which light is coupled from the at least one laser light source, as well as at least one
  • Light wavelength conversion element which is arranged on a surface of the TIR optics such that light emitted by the at least one laser light source and coupled into the at least one TIR optic passes at this surface into the light wavelength conversion element, wherein the at least one laser light source and the at least one TIR Optics are aligned with each other so that at the aforementioned surface in the at least one
  • Refractive index of air and n2 is the refractive index of the at least one TIR optic on the aforementioned surface.
  • WO 2014/114397 A1 discloses a color wheel for a
  • Lighting device which with a carrier substrate and
  • a lighting device has at least one such color wheel and at least one primary light source, in particular semiconductor light source, for irradiating the
  • Color wheel with primary light which is at least partially wavelength-convertible by means of the at least one phosphor region of the color wheel on.
  • WO 2015/124531 A2 discloses a laser diode chip in which at least one laser facet has a coating.
  • the coating has at least one inorganic layer and at least one organic layer.
  • WO 2015185296 A1 discloses a conversion device for converting radiation of an excitation radiation source into conversion radiation comprising: a substrate; a
  • Conversion arrangement which is arranged on the substrate, comprises at least one phosphor and has at least one predeterminable conversion capability, wherein the
  • the invention also relates to a phosphor wheel with such Conversion device and a method for producing such a conversion device.
  • a lighting device comprising a phosphor body for at least one
  • This lighting device has the advantage that it is not fully illuminated by the primary light, but only along its typically far above the
  • Fluorescent body distributes running tracer.
  • non-illuminated areas of the phosphor body can be used for heat dissipation, which can also be widely distributed over the phosphor body.
  • Millimeters or more in particular at least ten millimeters. It is still a continuing education that the
  • Track length is not more than 50 millimeters, in particular not more than 30 millimeters. So can a track length in particular between 10 millimeters and 30 millimeters, for example about 20 millimeters.
  • a distance between two tracer tracks is not more than four millimeters, in particular not more than three millimeters, in particular not more than two.
  • a training that is a distance between two
  • a width of the heat dissipation regions may be equal to or less than the distance between two tracers.
  • the width of the heat dissipation regions may be e.g. at least 100 micrometers, in particular at least 200 micrometers,
  • Heat dissipation regions may e.g. not more than two millimeters, in particular not more than 1.5 millimeters, in particular not more than one millimeter, to
  • the width may be between 100 microns and 1.5 millimeters.
  • a cross-section of the heat dissipating areas may vary over their longitudinal extent, so advantageously
  • the lighting device may have a transmissive structure or a reflective structure.
  • the phosphor body has at least one phosphor which is suitable for at least incident primary light partially convert into secondary light of different wavelength or convert. If several phosphors are present, they may produce secondary light of mutually different wavelengths.
  • the wavelength of the secondary light may be longer (so-called “down conversion”) or shorter (so-called “up conversion”) than the wavelength of the primary light.
  • blue primary light may be converted to green, yellow, orange, or red secondary light by means of a phosphor.
  • only partial wavelength conversion or wavelength conversion of the phosphor body is a mixture of
  • white useful light may be generated from a mixture of blue, unconverted primary light and yellow secondary light.
  • a full conversion is possible in which the primary light either no longer or only a negligible proportion in the useful light is present.
  • a degree of conversion depends, for example, on a thickness, a porosity, a phosphor concentration of the phosphor and / or a presence of further scattering particles. If several phosphors are present, secondary light components of different spectral colors can be produced from the primary light
  • Composition are produced, e.g. yellow and red
  • the red secondary light may be used to give the useful light a warmer hue, e.g. so-called “warm-white”.
  • a warmer hue e.g. so-called "warm-white”.
  • At least one phosphor may be suitable for further wavelength conversion of secondary light, e.g. green secondary light in red secondary light.
  • secondary light e.g. green secondary light in red secondary light.
  • Such a light which is once again wavelength-converted from a secondary light may also be referred to as a "tertiary light”.
  • Semiconductor light source comprises at least one laser and / or at least one light emitting diode or has.
  • the at least one light emitting diode may be in the form of at least one individually housed light emitting diode or in the form of at least one LED chips are present.
  • Several LED chips can be mounted on a common substrate ("submount").
  • At least one semiconductor light source can be equipped with at least one own and / or common optics for beam guidance, e.g. at least one Fresnel lens,
  • OLEDs organic LEDs
  • the at least one laser can have at least one diode laser.
  • the distances along a line may be shorter than the distances between individual lines. It is advantageous that the semiconductor light sources as
  • Primary light beam is at least approximately at the
  • Irradiation surface of the phosphor body is located so that the distances of the heat dissipation can be kept as low as possible, which increases a light output.
  • at least one semiconductor light source and the phosphor body at least one optic, in particular
  • each other may in particular correspond to a width of a luminous trace or may be greater than a width of a luminous trace, as also stated above.
  • the fact that the phosphor body can be irradiated in a track-like manner with the primary light can include that at least one of the Primary light irradiation area generated thereon or
  • Light spot is moved over the phosphor body and so - with temporally integrated irradiation - a track
  • the illumination device may be configured to emit the light emitted by the at least one semiconductor light source
  • the spot may be circular or oblong
  • the longitudinal axis or longer axis (e.g., a major long axis) is high to achieve
  • spot size an extent of the light spot or “spot” is between 20 microns and 1000 microns, in particular between 50
  • Luminous spot may extend to a longest axis, e.g. a large semi-axis, relate.
  • the tracer may be contiguous or multiple
  • Luminous spot can in particular one to a certain
  • the boundary of the luminous spot can be understood as the limit at which an irradiation intensity has a value 1 / e or 1 / e A 2 of the maximum irradiance
  • the illumination device has at least one movable mirror for time-variable deflection of the radiated from the at least one semiconductor light source primary light on the phosphor body. So a track-like lighting in a particularly easy way be implemented.
  • a two-axis pivotable mirror can be used.
  • a mirror pivotable back and forth about an axis may be used with a rotatable mirror optically connected in series therewith.
  • At least one mirror is a resonantly reciprocable mirror. It is also a continuing education that at least one
  • MEMS Mirror is a MEMS mirror, in particular a resonant oscillating back and forth MEMS mirror.
  • MEMS mirrors are
  • Slewing frequency can e.g. in a range between 1 Hz and 10 kHz.
  • the adjacent sections may be continuous or discontinuous sections of a tracer track.
  • the phosphor body can be irradiated line by line by means of the at least one semiconductor light source and, in particular in plan view, elongated heat dissipation regions are present between adjacent lines. The generation of such line-like
  • Sections of the tracer track is easy to implement and
  • Phosphor body In particular, the individual can be any Phosphor body.
  • the individual can be any Phosphor body.
  • the individual can be any Phosphor body.
  • the individual can be any Phosphor body.
  • a row-wise irradiation may, in particular, be understood as an irradiation which generates mutually offset tracer sections on the phosphor body. These tracer sections are in particular straight.
  • the elongate heat sink areas may then be e.g. as a straight line, parallel to each other
  • staggered areas may be formed and may also be referred to as strip-shaped or band-shaped.
  • the tracer sections can in principle be oriented arbitrarily on the surface of the phosphor body, eg horizontal, vertical or oblique.
  • the line-by-line irradiation can therefore also - depending on the view - as a column
  • Heat dissipation is a superficially projecting area. So he stands before a plane on which the
  • a luminous efficiency of the useful light can be improved because light radiated from the phosphor body in the direction of the above range (e.g., scattered primary light and / or secondary light generated) at least partially returns to the phosphor body
  • Fluorescent body for the primary light is present, in particular only on the Einstrahlseite. This is particularly advantageous in a transmissive structure, since so the
  • Auskopplungseffizienz the Nutzlichts on a (Nutzlicht-) emission or outlet side is not reduced. This advantage is enhanced by the fact that an area at which the useful light is radiated on the exit side, can be considerably larger than the area of the light spot of the
  • the at least one heat dissipation region is thermally insulated via an outer frame with a heat sink (e.g., a heat spreader, a heat spreader)
  • a heat sink e.g., a heat spreader, a heat spreader
  • the outer frame may be made of metal or ceramic. It may be present on an edge region of the phosphor body.
  • the frame can be glued to the heat sink, for example by means of a thermally conductive adhesive or Kitts, be screwed to it to be locked, etc.
  • the heat sink can be made of metal, such as aluminum or copper, ceramic, eg A1N, or filled plastic, eg with BN
  • the phosphor body is or has at least one ceramic phosphor plate.
  • a phosphor plate can be made particularly flat, which is particularly advantageous for a transmissive structure.
  • the ceramic phosphor plate can be made particularly flat, which is particularly advantageous for a transmissive structure.
  • Phosphor plates self-supporting and mechanically robust.
  • the phosphor body can also stack up
  • a thickness of the phosphor wafer may be in a range between 10 micrometers and 300 micrometers, in particular at approximately 70 micrometers, for example in the case of a partial conversion of the primary light.
  • a thickness or height of the heat dissipating regions may be 50% to 200% of the thickness of the
  • Phosphor chips e.g. between 35 microns and 600 microns.
  • the at least one heat dissipation region consists of ceramic. So can
  • a thermal mismatch to a base body of phosphor ceramic are kept low.
  • Phosphor body in particular a ceramic
  • Phosphor plate is. So can the at least one
  • Fluorescent body are manufactured and has particular also the same - eg ceramic - material on. Such a phosphor body is particularly simple and inexpensive to produce. It is also an embodiment that the at least one
  • Thermal conductivity can be selected.
  • the two ceramic materials can be sintered together.
  • the at least one heat dissipation region is made of metal, e.g. made of aluminum and / or copper.
  • Metal has a particularly high
  • the metal is lithographically structured.
  • the at least one heat dissipation region has a surface which reflects at least for the secondary light. So can one
  • Secondary light portion of the Nutzlichts can be further increased by light from the remaining phosphor body in the heat dissipation light penetrating back is reflected.
  • Secondary light is reflected
  • Einstrahlseite such a dichroic layer may be present in order to increase a luminous efficacy.
  • the reflective surface is thus at least to the
  • Reflective surface can be achieved by shaping the above heat dissipating area, e.g. by forming the surface as a TIR surface and / or
  • the reflective surface can be any shape.
  • the layer can cover the réelleableit Schemee. Alternatively or additionally, the Stellarit Schemee itself already reflective
  • this at least one layer may be a dichroic layer to allow there a back reflection of secondary light.
  • the metal layer may e.g.
  • TIR reflector have or consist of highly reflective aluminum and / or silver, for example a coating with MIRO-SILVER from ALANOD. It is one of the most suitable as a TIR reflector
  • Heat dissipation is beveled.
  • the heat dissipation region may be triangular or trapezoidal in cross-section.
  • shaping a cross-sectional shape of the fauxableit Schemee can also be the optical
  • the at least one heat dissipation region for reflection in particular TIR reflection, can also be structured in a suitable manner in another way.
  • Lighting device a plurality of semiconductor light sources for the track-like irradiation of the phosphor body with the
  • Primary light has.
  • Semiconductor light sources separate their primary light separately
  • Radiate phosphor body so produce different spots at the same time, they can produce a same tracer track offset in time or
  • different semiconductor light sources are irradiated and / or the phosphor body can be irradiated by different semiconductor light sources in common - but possibly with a time lag.
  • individual semiconductor light sources are irradiated and / or the phosphor body can be irradiated by different semiconductor light sources in common - but possibly with a time lag.
  • individual semiconductor light sources are irradiated and / or the phosphor body can be irradiated by different semiconductor light sources in common - but possibly with a time lag.
  • individual semiconductor light sources are irradiated and / or the phosphor body can be irradiated by different semiconductor light sources in common - but possibly with a time lag.
  • Primary light beams of the semiconductor light sources are brought together before impinging on the phosphor body to a single primary light beam.
  • Lighting device is a vehicle lighting device.
  • the vehicle may be a motor vehicle (eg, a motor vehicle such as a passenger car, truck, bus, etc. or a motorcycle), a railroad, a watercraft (eg, a boat or a ship), or an aircraft (eg, an airplane or a helicopter).
  • the vehicle lighting device may in particular be a headlight.
  • Particularly advantageous is the lighting device as one or together with an AFS ("Adaptive Front
  • the lighting device can also for
  • the advantage achieved by the lighting device is that, due to the improved thermal connection of the phosphor body or converter, a constant luminous flux can be generated for the constant temperature of the phosphor body.
  • Lighting device is not limited to transmissive structures, but can also be used with reflective structures. Particularly in the case of the transmissive structure, there is the advantage that the heat-dissipating areas are located on the entrance or irradiation side (side facing the LASER source) of the phosphor body: since the LASER spot at the entrance is smaller than the corresponding, converted spot
  • Fig.l shows a sketch of a general construction of a
  • Fluorescent plate in one more possible
  • Fig. 1 shows a sketch of a general construction of a lighting device 1.
  • the lighting device 1 may be a vehicle headlight or a part thereof, e.g.
  • the lighting device 1 has at least one
  • Semiconductor light source in the form of a laser 2, which emits a beam 3 of primary light P.
  • their individual primary light beams can be combined to form the primary light beam 3.
  • Primary light beam 3 is optionally directed to a MEMS mirror 5 by means of optics 4.
  • the MEMS mirror 5 is a resonantly operated mirror, which thus has several
  • Rotary positions can take, in particular continuously (as indicated by the solid line and the dotted position indicated).
  • the MEMS mirror 5 reflects the
  • Primary light beam 3 which then impinges through a further, optional optics 6 on a Einstrahlseite 7 of a phosphor body in the form of a ceramic phosphor plate 8 and generates a light spot there. Due to the movement of the MEMS Mirror 5, the spot on the Einstrahlseite 7 is moved (as indicated by the solid line and the dotted primary light beam 3 indicated) and generates there over the time integrated a tracer.
  • the primary light P is partially from the phosphor plate 8 in yellow (and possibly in other, for example, orange or red)
  • the phosphor plate 8 may be followed by a decoupling optics (not shown).
  • the phosphor chip 8 is surrounded by a housing 10 made of metal, e.g. aluminum and / or copper, or ceramic, e.g. A1N, held.
  • a housing 10 made of metal, e.g. aluminum and / or copper, or ceramic, e.g. A1N, held.
  • metal e.g. aluminum and / or copper
  • ceramic e.g. A1N
  • the housing 10 may be connected to a heat sink (not shown), e.g. be screwed to it, and / or even serve as a heat sink.
  • Cooling strip 11 which are applied to a platelet-shaped base body 12 which consists of the phosphor ceramic.
  • the cooling strips 11 may have been applied, for example, by gluing or soldering (in particular in the case of metallic cooling strips 11, for example made of aluminum, silver and / or copper) or by sintering (in particular in the case of ceramic cooling strips 11). They can also be integral parts of the phosphor plate 8.
  • the linear cooling strips 11 are arranged parallel and laterally offset from one another. Adjacent cooling strips 11 leave so linear portions of the body 12 as "openings" between them freely.
  • FIG. 4 shows the phosphor plate 8 from FIG.
  • This phosphor plate 8 is a
  • Embodiment 8a of several possible embodiments The four cooling strips 11 here are connected to a peripheral frame 13, in which they pass.
  • the frame 13, in turn, can contact the housing 10 in a planar manner, so that it enables effective heat conduction from the cooling strips 11 to the housing 10 and possibly further to a heat sink (not shown).
  • the primary light beam 3 illuminates or irradiates the
  • Main body 12 between the cooling strips 11 and generates at a certain time a light spot F.
  • Luminous spot F is moved between the cooling strips 11 via the base body 12, line by line.
  • the luminous trace L thus produced has five parallel, not
  • a primary light beam 3 can successively cover a plurality of lines of the light trace L and thereby illuminate, e.g. all lines.
  • each of the lines of the tracer track L may be illuminated by its own spot F
  • Primary light beams 3 are dynamically guided in one direction over the phosphor plate 8. This can also be referred to as "laser comb” when using laser beams.
  • the alternative variant has the advantage that the
  • Primary light beams 3 do not need to change the line, but only need to be moved back and forth in one line. This in turn allows a particularly simple structure of the MEMS mirror (the only back and forth about an axis of rotation needs to swing) and a particularly high
  • the frame 13 is not shown.
  • the cooling strips IIb on the Einstrahlseite 7 are as
  • the cooling strips IIb have been made here in one piece with the main body 12 and consist in particular of the same material.
  • FIG. 6 shows in a view analogous to FIG. 5
  • Phosphor plate 8c is similar to that
  • the cooling strips 11c are made of a different material than the main body 12.
  • the cooling strips 11c consist of a ceramic material having a higher thermal conductivity than the phosphor ceramic of the main body 12.
  • cooling strip 11c Material mismatch is achieved, for example, by co-sintering YAG: Ce as the phosphor ceramic with YAG as the material of the cooling strip 11c.
  • the cooling strips 11c are made of metal.
  • the cooling strip 11c may, for example, be sputtered or vapor-deposited and then patterned by means of a lithographic process.
  • a - e.g. applied by sputtering - metallic heat dissipation be galvanically reinforced.
  • a thickness of the galvanic layer may be e.g. in one
  • Range between five and 100 microns.
  • FIG. 7 shows in a view analogous to FIG
  • Embodiment 8d with now ten cooling strips 11, lld.
  • the cooling strips 11d are beveled, namely triangular, to allow more effective total internal reflection back reflection. All cooling strips 11 - especially if they are not made of metal - can on their surface with a
  • ⁇ On, “an”, etc. may be taken to mean a singular or a plurality, in particular in the sense of “at least one” or “one or more”, etc., as long as this is not explicitly excluded, eg by the expression “exactly a "etc. Also, a number may include exactly the specified number as well as a usual tolerance range, as long as this is not explicitly excluded.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention concerne un dispositif d'éclairage (1) présentant un corps luminescent (8) pour convertir au moins partiellement une lumière primaire (P) en lumière secondaire (S) et au moins une source lumineuse à semi-conducteur (2) au moyen de laquelle le corps luminescent (8) peut être exposé à la lumière primaire (P) sous forme de trace. Au moins une région du corps luminescent (8) située entre des sections voisines d'une trace lumineuse (L) constitue une région de dissipation thermique. L'invention peut être utilisée de manière particulièrement avantageuse pour des éclairages de véhicule, en particulier des phares.
PCT/EP2017/061167 2016-06-02 2017-05-10 Dispositif d'éclairage Ceased WO2017207228A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016209687.7A DE102016209687A1 (de) 2016-06-02 2016-06-02 Beleuchtungsvorrichtung
DE102016209687.7 2016-06-02

Publications (1)

Publication Number Publication Date
WO2017207228A1 true WO2017207228A1 (fr) 2017-12-07

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PCT/EP2017/061167 Ceased WO2017207228A1 (fr) 2016-06-02 2017-05-10 Dispositif d'éclairage

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DE (1) DE102016209687A1 (fr)
WO (1) WO2017207228A1 (fr)

Citations (10)

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US20110149549A1 (en) * 2009-12-17 2011-06-23 Yasuyuki Miyake Semiconductor light source apparatus and lighting unit
JP2012226986A (ja) * 2011-04-20 2012-11-15 Stanley Electric Co Ltd 光源装置および照明装置
WO2013144053A1 (fr) 2012-03-26 2013-10-03 Osram Gmbh Dispositif lumineux comprenant un élément luminescent sur un élément refroidisseur
DE112011104877T5 (de) 2011-04-13 2013-11-14 Osram Gmbh Verfahren zum Herstellen einer Leuchtstoffvorrichtung und Beleuchtungsvorrichtung, welche eine solche Leuchtstoffvorrichtung aufweist
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