EP3130846A1 - Waterproof led light - Google Patents

Waterproof led light Download PDF

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Publication number
EP3130846A1
EP3130846A1 EP16182911.4A EP16182911A EP3130846A1 EP 3130846 A1 EP3130846 A1 EP 3130846A1 EP 16182911 A EP16182911 A EP 16182911A EP 3130846 A1 EP3130846 A1 EP 3130846A1
Authority
EP
European Patent Office
Prior art keywords
led
heat sink
tube
profile
cross
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.)
Granted
Application number
EP16182911.4A
Other languages
German (de)
French (fr)
Other versions
EP3130846B1 (en
Inventor
Ferdinand Pfleghart
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
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Publication of EP3130846A1 publication Critical patent/EP3130846A1/en
Application granted granted Critical
Publication of EP3130846B1 publication Critical patent/EP3130846B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S4/00—Lighting devices or systems using a string or strip of light sources
    • F21S4/20—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports
    • F21S4/28—Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
    • 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
    • F21V3/06—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material
    • F21V3/062—Globes; Bowls; Cover glasses characterised by materials, surface treatments or coatings characterised by the material the material being plastics
    • 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
    • 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
    • F21K9/90—Methods of manufacture
    • 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
    • F21V29/85—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems characterised by the material
    • F21V29/89—Metals
    • 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
    • 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
    • F21V31/04—Provision of filling media
    • 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
    • F21W2131/401—Lighting for industrial, commercial, recreational or military use for swimming pools
    • 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
    • F21Y2101/00—Point-like light sources
    • 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
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear 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 the field of LED (Light Emitting Diodes) lamps and more particularly relates to a waterproof LED lamp for lighting purposes according to the preamble of claim 1.
  • LED Light Emitting Diodes
  • the light is designed to emit light for the purpose of perception by the human eye.
  • waterproof LED lights which are designed as tube lights. These comprise a LED strip arranged on a heat sink profile made of metal and having a plurality of LED units. The heat sink profile with LED tape is encapsulated in a sheath tube.
  • Such an LED light is for example in the EP 2 685 157 described.
  • the requirements for waterproof LED luminaires are very high and therefore not comparable to the requirements for conventional LED luminaires for indoor and outdoor applications.
  • watertight LED luminaires must be completely watertight with respect to both water and water vapor. They should also be resistant to chemicals such as acids or chlorine, as wet applications often place high demands on resistance to reactive chemicals.
  • the waterproof LED light in underwater applications must also withstand the exposed water pressure without being deformed. Furthermore, efficient heat dissipation must be guaranteed in order to avoid overheating of the powerful LED units.
  • the EP 2 685 157 now describes a method according to which the free cavity of the LED tube light is potted with a translucent potting compound, so that the LED units are surrounded by a potting compound. This ensures a good seal of the LED units against water and water vapor. In addition, the potting compound ensures good strength of the LED tube light against the water pressure. The potting compound also supports heat dissipation from the LED units.
  • the potting compound has the disadvantage that it changes the spectrum of the radiated light, so that externally a changed LED light color temperature is perceived.
  • such effects are extremely undesirable.
  • Object of the present invention is therefore to propose a waterproof LED lamp, which is both water and water vapor-tight and resistant to chemicals, with which the water is added, and which causes as possible no change in the LED light color temperature and the light intensity.
  • the LED light should ensure a good dissipation of heat from the LED units and thereby enable high light output.
  • the LED light should also be dimensionally stable and withstand the water pressure.
  • the LED lamp should be in particular UV and ozone resistant.
  • the LED luminaire contains a heat sink profile made of metal with at least one LED strip arranged thereon, which comprises a plurality of LED units.
  • the LED light may include a single LED band or multiple LED bands.
  • the heat sink profile with the at least one LED strip is encapsulated in a translucent jacket tube.
  • the at least one LED strip is directed toward a lamp cavity formed between the jacket tube and the heat sink profile, such that the LED units can emit light through the lamp cavity to the jacket tube and through the jacket tube to the outside.
  • each LED strip can be assigned a luminaire cavity, wherein the luminaire cavities viewed over the cross section of the LED luminaire are in particular separated from one another.
  • the cross-sectional inner circumference of the cladding tube and the cross-sectional outer circumference of the heat sink profile each form at least one contact arc section, the cladding tube and the heat sink profile abutting each other in the region of the contact arc sections.
  • the sheath tube and the heat sink profile may be formed such that the sheath tube rests with at least 40% of its cross-sectional inner circumference of the cross-sectional outer circumference of the heat sink profile.
  • the sheathing tube bears against the cross-sectional outer circumference of the heat sink profile with at least half of its cross-sectional inner circumference, in particular with more than half of its cross-sectional inner circumference.
  • the cross-sectional inner circumference of the cladding tube and the cross-sectional outer circumference of the heat sink profile, with which the cladding tube abuts the heat sink profile, can be composed of a single or multiple contact arc sections.
  • Several contact arc sections can be interrupted in particular by light cavities.
  • the heat sink profile can form a plurality of contact arc sections arranged along its cross-sectional outer circumference. These contact arc sections may be delimited by groove-shaped depressions. The groove-shaped depressions in each case receive an LED band in particular.
  • Heat sink profile and cladding tube form a flat contact in this area.
  • the contact between the heat sink profile and sheath tube results in a high stability.
  • the heat sink profile is the jacket tube in the said area so in particular flush or tight. Heatsink profile and sheath tube form in the contact area in particular a frictional engagement.
  • the heat sink profile is jammed in particular on this flat contact in the sheath tube.
  • sectional geometries of the cross-sectional outer circumference of the heat sink profile and the cross-sectional inner circumference of the jacket tube, which abut each other, are in particular formed opposite to each other.
  • the jacket tube consists in particular of a fluoropolymer with low friction values, the heat sink profile can be inserted into the jacket tube without great circumstances, despite the comparatively large-area contact with the jacket tube.
  • the sheath tube can be previously heated, whereby this is slightly stretchable. This method is particularly advantageous for long LED lights of several meters in length.
  • the surface contact between the inner wall of the jacket tube and the heat sink profile ensures efficient heat dissipation from the heat sink profile through the jacket tube to the outside.
  • the LED light is designed in particular as a longitudinal body.
  • the longitudinal body forms a longitudinal axis.
  • the LED lamp has a longitudinal extension which corresponds to a multiple of the cross-sectional diameter.
  • the LED light can be formed in a straight line along its longitudinal extent. That is, the LED lamp has no curvature.
  • the LED lamp with the jacket tube is in particular a tube lamp.
  • tube is intended to mean an elongated hollow body whose length is substantially greater than its diameter.
  • the tube may be dimensionally stable or be formed as a non-dimensionally stable tube. The latter Difference is of limited importance with respect to the finished LED lamp in that the heat sink profile is inserted into the sheathing tube and thereby also a non-dimensionally stable tube is transferred into a dimensionally stable tube shape.
  • the cross-sectional inner circumference of the sheathing tube is round, in particular circular or circular.
  • the cross-sectional inner circumference of the sheathing tube may also be oval or elliptical.
  • the cross-sectional outer circumference of the heat sink profile forms at least one circular arc section which corresponds to the at least one contact arc section.
  • the heat sink profile lies with its at least one circular arc section of the sheath tube inside.
  • the radii of the circular cross-sectional inner circumference of the sheathing tube and the at least one circular arc portion of the cross-sectional outer circumference of the heat sink profile are in particular identical.
  • Said at least one circular arc portion of the heat sink profile closes z.
  • the LED light may include a light fixture.
  • the LED light can be fastened to an external structure via the light fixture.
  • the sheathing tube is particularly weather-resistant, water and water vapor-tight, temperature-resistant, resistant to chemicals and impact resistant.
  • the jacket tube is preferably made of a (high-performance) plastic, in particular a translucent fluoropolymer. Translucent means that the material allows electromagnetic waves to pass in the visible range.
  • the jacket tube is in particular transparent. In particular, a high transparency of the sheath tube ensures optimal light throughput.
  • fluoropolymer for the sheath tube is z.
  • fluorinated elastomer As a fluorinated elastomer. Fluorinated elastomers are z. B. fluoroelastomers such as FKM according to DIN ISO 1629, formerly called FPM. Other designations are also FCM or CFM, fluororubber or fluorocarbon elastomer. Fluorinated elastomers may also be rubbers which commonly share vinylidene (di) fluoride (VDF) as one of their monomers.
  • VDF vinylidene fluoride
  • the fluoroelastomer can also be a copolymer of fluorinated hydrocarbons.
  • fluorine-containing copolymers such as tetrafluoroethylene / hexafluoropropylene copolymer (FEP), ethylene / tetrafluoroethylene copolymer (ETFE) and perfluoroalkoxy copolymer (PFA) can also be used.
  • FEP tetrafluoroethylene / hexafluoropropylene copolymer
  • ETFE ethylene / tetrafluoroethylene copolymer
  • PFA perfluoroalkoxy copolymer
  • FKM fluoroelastomer
  • PFA perfluoroalkoxy copolymer
  • ETFE ethylene / tetrafluoroethylene copolymer
  • the sheathing tube is z. B. flexible. This can be z. B. can be achieved by a small wall thickness. So the sheathing tube z. B. be designed as a hose, which z. B. is not dimensionally stable. A sheath tube designed as a thin-walled outer sheath ensures a very good heat flow to the outside.
  • the sheath tube is formed dimensionally stable.
  • the jacket tube may have elastic properties.
  • the cladding tube may have a wall thickness of 0.1 mm or more, more preferably 0.2 mm or more.
  • the jacket tube may have a wall thickness of 2 mm or less, more preferably 1 mm or less.
  • the cladding tube ensures a good heat flow with the given wall thickness and can still meet the mechanical, chemical and physical requirements, such as the desired light transmission value.
  • the sheathing tube is formed in cross section in particular closed.
  • the jacket tube preferably has only one or two ends open at the ends.
  • the sheathing tube is interrupted along its cross-sectional circumference and has an opening.
  • the opening can be viewed in the tube longitudinal direction sections or continuously formed.
  • the opening z. B. be in the tube longitudinal direction continuously or intermittently extending longitudinal opening, which z. B. is slot-shaped.
  • the heat sink profile expediently forms a heat-conducting contact, in particular direct contact, with a light fixture via the opening.
  • the heat sink profile is connected via the opening in particular with the lamp holder.
  • the light fixture can thus serve as a heat sink extension over which heat energy is dissipated from the heat sink profile to the environment. Through the opening in the casing tube whose thermal insulating effect falls away.
  • the open sheath tube is in particular sealed against the light fixture against the ingress of water and water vapor.
  • the jacket tube may have a round, in particular circular or circular cross-sectional shape.
  • the cross-sectional shape may also be oval or elliptical.
  • the heat sink profile serves as already mentioned as a heat sink and therefore consists of a good heat conducting metal.
  • the heat sink profile is in particular made of aluminum or an alloy thereof. Copper or a copper alloy is also conceivable. Furthermore, the heat sink profile can be made of nanoparticles.
  • the heat sink profile is preferably present as a longitudinal profile.
  • the heat sink profile is in particular a round profile.
  • the heat sink profile is designed in particular as a solid profile.
  • the heat sink profile can z. B. be made of a round rod.
  • the heat sink profile can also be used as a hollow profile, i. be designed as a tubular body.
  • the wall thickness of the tubular body is in particular at least 10%, especially at least 15% and usefully at least 20% of the pipe diameter.
  • the heat sink profile has in particular a longitudinal extent, which corresponds to a multiple of the largest cross-sectional diameter.
  • the heat sink profile is preferably rectilinear.
  • the cross-sectional geometry can be constant over the entire longitudinal extent of the heat sink profile.
  • the heat sink profile is over its cross-sectional shape, i. transverse to the longitudinal direction, in particular formed in one piece. It is also possible that the heat sink profile is formed in several parts over its cross-sectional shape.
  • the heat sink profile can also be composed on the basis of its cross-sectional shape onion shell-like from a plurality of shell-shaped partial profiles, which are arranged relative to each other displaceable in the profile longitudinal direction.
  • the heat sink profile can be composed in the longitudinal direction of several successively arranged sub-profiles.
  • the heat sink profile forms at least one groove-shaped recess, in particular a longitudinal groove, in which the at least one LED strip is arranged.
  • the at least one groove-shaped Recess runs in particular parallel to the profile longitudinal direction.
  • the at least one groove-shaped depression can, for. B. worked out by means of cutting technology from the heat sink profile, in particular milled.
  • the at least one groove-shaped depression is z. B. made of a round profile, by removing a circular section from the profile cross-section and, based on the chord, in the further recess, flanked by two profile edges, is introduced.
  • a cup-shaped recess can be removed and in the base and / or in the flanks of the cup-shaped recess, the at least one groove-shaped recess for the at least one LED band can be introduced.
  • the at least one groove-shaped depression may have a cross-sectional width which is at least half, in particular at least two thirds of the largest cross-sectional diameter of the heat sink profile or more. This ensures that the light can be optimally radiated from the LED units to the cladding tube.
  • the at least one groove-shaped recess forms, in particular together with the jacket tube, the lamp cavity.
  • the lamp cavity contains in particular a gas, such as air.
  • the luminaire cavity may be subject to atmospheric pressure or overpressure.
  • the luminaire cavity forms a dimensionally stable (air) chamber.
  • the at least one groove-shaped recess is designed so that the components of the LED strip and optionally further electronic components which are arranged in the groove-shaped depression do not protrude beyond the groove-shaped depression towards the jacket tube.
  • the heat sink profile may contain exactly a groove-shaped recess in which at least one LED strip is arranged.
  • the heat sink profile along its cross-sectional outer circumference forms a plurality of groove-shaped depressions, in each of which at least one LED band is arranged.
  • the groove-shaped recesses are in particular radially open to the outside.
  • the LED strips are aligned in the groove-shaped recesses in particular pointing radially outwards.
  • the LED strips run in particular parallel to each other in the profile longitudinal direction.
  • the groove-shaped depressions are delimited from one another via respective profile flanks, as mentioned below.
  • a contact arc section of the type described above is formed in each case between the profile flanks of two adjacent groove-shaped depressions.
  • Each groove-shaped depression forms in particular a separate illuminated cavity.
  • the jacket tube further comprises a, the lamp cavity bounding, unsupported cross-sectional peripheral portion.
  • the unsupported cross-sectional peripheral portion forms, for example, a bow, in particular a circular arc.
  • the circular arc includes in particular an angle (center angle) of 120 Ā° or smaller.
  • the heat sink profile contains in particular two, the groove-shaped depression laterally delimiting profile flanks, which rests on the outer side of the sheath tube.
  • the profile flanks support the sheath tube before it merges into the unsupported cross-sectional peripheral portion.
  • the heat sink profile includes a further recess in which a sensor unit is arranged.
  • the recess is not continuous in profile longitudinal direction in particular.
  • the sensor unit includes a temperature sensor that measures the temperature of the heat sink profile.
  • the sensor unit may further include a thermal circuit breaker which regulates the power supply to the LED units when the temperature is exceeded.
  • the temperature can also be regulated externally via the LED control in order to avoid overheating.
  • the LED strip is applied in particular directly in the groove-shaped depression on the heat sink profile, which ensures optimal heat dissipation.
  • the LED band is in particular connected to the heat sink profile, z. B. via an adhesive bond.
  • the LED tape can z. B. have a total height of up to 5 mm.
  • the LED strip comprises a band-shaped or strip-shaped LED carrier with printed conductors, via which the LED units electrical energy and / or control signals are transmitted.
  • the strip-shaped LED carrier is preferably flexible, i. made flexible.
  • the strip-shaped LED carrier has, for example, a thickness of 0.1 to 2 mm.
  • the strip-shaped LED support On the strip-shaped LED support are a plurality of LED units in the longitudinal extension of the LED strip one behind the other and z. B. arranged at a distance from each other.
  • the LED units are designed, for example, as LED chips.
  • the LED units are mounted on the strip-shaped LED carrier.
  • the LED carrier corresponds to the board.
  • the LED strip comprising LED units and printed conductors on the strip-shaped LED carrier forms a complete functional unit.
  • the jacket tube has in particular two open tube ends.
  • the jacket tube is in particular of a long goods, z. B. rolls, present sheath tube tailored to measure.
  • the LED light or the associated sheathing tube is sealed at the open ends via a respective sealing arrangement water and water vapor-tight to the outside.
  • the sealing arrangement is in particular (water) pressure-resistant (eg up to 10 bar) and also resistant to chemicals of the type already mentioned.
  • the seal assembly may include a closure member which engages and / or engages the open tube end.
  • the closure element may be a plug, which is inserted with a portion in the open end of the pipe.
  • the closure element can also be a cap, which is pushed with a portion over the open end of the tube.
  • sealing arrangement may include sealing elements, such as sealing rings, which seal the connection between the closure element and the jacket tube.
  • the sealing arrangement closes the pipe ends firmly mechanically.
  • the line connections are guided, for example, via the at least one pipe end into the interior of the luminaire.
  • the line connections are guided, for example, through the closure element.
  • the sealing arrangements mounted at the beginning and end of the sheathing tube, in particular their sealing elements, are preferably also chemically resistant.
  • the sealing elements may be made of a fluoropolymer, for example of an FPM (fluoroelastomer), in particular of one of the above-mentioned fluoroelastomer.
  • FPM fluoroelastomer
  • the inventive LED light is in particular an LED underwater light for underwater applications.
  • the inventive LED light is used in particular in swimming pools, pool areas, in wellness facilities, in wells, in ponds, in wells of drinking water supplies, in car washes, in standing Waters, in river water areas and generally in wet areas, where a permanent or temporary contact of the LED light with water and steam and chemical vapors should be possible.
  • the LED light can z. B. have a length of 5 cm up to 10 m.
  • the inner diameter of the LED light can be 5 to 30 mm, in particular 10 to 20 mm. Inner diameters larger than 30 mm are also possible. In the same area the largest diameter of the heat sink profile can be.
  • the LED light is suitable for water pressures of 3 bar or more without these z. B. deformed and the LED units would be damaged.
  • the large-surface wall contact of the heat sink profile ensures on the one hand for a high strength of the lamp and for excellent heat dissipation. As a result, particularly bright LED units can be used.
  • the waterproof LED tube light 1, 1 ' accordinging to FIGS. 1 and 2 such as FIG. 4 comprises a heat sink longitudinal profile 2.1 with a longitudinal groove 6, in which an LED strip 10 is inserted and connected to the heat sink longitudinal profile 2.1.
  • the LED strip 10 includes a plurality of longitudinally of the heat sink longitudinal profile 2.1 one behind the other and spaced from each other arranged LED units 15th
  • the heat sink longitudinal profile 2.1 with the LED strip 10 is inserted into a translucent casing tube 3 made of plastic.
  • the chemical and weather-resistant jacket tube 3 is made of transparent Teflon, for example.
  • the sheath of the electric cable 7 is for example made of FPM.
  • the sheathing tube 3 and its cross-sectional inner circumference are circular.
  • the cross-sectional outer circumference of the heat sink profile 2.1 has a circular arc section 11 (contact arc section) which encloses an angle (center angle) of approximately 255 Ā°.
  • the heat sink profile 2.1 is flush with its circular arc section 11 on the sheathing tube 3 and thus forms with this a flat contact.
  • the LED strip 10 is arranged in the groove bottom.
  • a control electronics 12 for the LED units 15 is arranged in the longitudinal groove 6 (see FIG. 2 ).
  • the depth of the longitudinal groove 6 is selected so that the electronic components 12, 15 arranged in the longitudinal groove 6 do not protrude beyond the longitudinal groove 6 towards the jacket tube 3.
  • the cross-section of the sheathing tube 3 forms an unsupported circular arc section 13 which, together with the longitudinal groove 6, encloses a lighting cavity 8.
  • the longitudinal groove 6 is bounded laterally in cross-sectional view by two profile flanks 9a, 9b.
  • the jacket tube 3 rests against the profile flanks 9a, 9b on the outside and is supported by this before it passes into the unsupported circular arc section 13.
  • the LED units 15 now radiate the light in the lamp cavity 8 to the sheath tube 3 out. Since the luminaire cavity 8 is not filled with a potting compound, the light does not show any change in intensity and color when it leaves the jacket tube 3. Due to the special design of sheath tube 3, heat sink profile 2.1 and contact portion 11 between sheath tube 3 and heat sink profile 2.1 of the light cavity 8 is dimensionally stable even at water pressures of 3 bar or higher.
  • the heat sink profile 2.1 further includes on its, the longitudinal groove 6 opposite side another recess 18 or recess, in which a sensor unit 16 is arranged.
  • the sensor unit 16 comprises a temperature sensor for measuring the temperature of the heat sink profile 2.1 and a heat protection switch, which interrupts the power supply to the LED units 15 in the event of overheating.
  • FIGS. 5a to 5b show various embodiments of heat sink profiles 2.1-2.5.
  • the geometry of the embodiments shown are adapted to LED strips of different widths. Accordingly, the heat sink profiles 2.1-2.5 in particular longitudinal grooves 6 of different width.
  • the width of the longitudinal groove 6 can be varied while maintaining the radius of the heat sink profile 2.1-2.5 by different sized circular segments are removed at the output profile of the heat sink profile 2.1-2.5.
  • FIGS. 6a to 6d four further embodiments of LED tube lights 21, 31, 41, 51 are shown, each of which in a sheath tube 23, 33, 43, 53 arranged heat sink profile 22, 32, 42, 52 included.
  • the heat sink profile 22, 32 of the two embodiments according to FIGS. 6a and 6b has a cup-shaped profile incision. Between the two flanks of the cup-shaped profile incision extends an unsupported circular arc portion of the sheath tube 23, 33rd
  • the cup-shaped profile incision contains a flat base surface on which an LED strip 25 is arranged.
  • a groove-like depression is formed both in the base and in the lateral flanks of the cup-shaped profile incision.
  • an LED strip 35 is arranged in each case.
  • the two lateral LED strips 35 each have an inclination relative to the LED strip arranged on the base.
  • the heat sink profile 42 in the form of a round rod.
  • the heat sink profile 42 has a groove-shaped recess which receives an LED strip 45.
  • the heat sink profile 52 in contrast to FIG. 6c as a round tube.
  • the heat sink profile 52 also has a groove-shaped depression which receives an LED strip 55.
  • the embodiments according to Figure 6a to 6c Incidentally, they have in common that they include a light fixture 24, 34, 44.
  • the jacket tube 23, 33, 43 forms an opening 26, 36, 46 in the region of the lamp holder 24, 34, 44.
  • the heat sink profile 22, 32, 42 is in the region of the opening 26, 36, 46 connected to the lamp holder 24, 34, 44, in particular connected flat. In this way, an additional, effective heat dissipation via the lamp holder 24, 34, 44 is achieved.
  • FIGS. 7a and 7b Characterized by a held in a sheath tube 73 heat sink profile 72, which forms along its cross-sectional outer circumference three groove-shaped recesses, each receiving a radially outwardly directed LED strip 75.
  • the LED strips 75 extend in the profile longitudinal direction L parallel to each other.
  • FIGS. 8 to 11 show modifications of the embodiment according to Figure 7a, 7b according to which the LED lamp 81, 91, 101, 111 differ by the different number of groove-shaped depressions in the cross-sectional outer circumference of the heat sink profile 82, 92, 102, 112 and the LED strips 85, 95, 105, 115 arranged therein ,
  • the embodiment detects FIG. 8 two groove-shaped recesses or LED strips 85, after FIG. 9 four groove-shaped depressions or LED strips 95, after FIG. 10 five groove-shaped recesses or LED strips 105 and after FIG. 11 eight groove-shaped depressions or LED strips 115 on.
  • FIG. 11 are correspondingly full and at regular intervals groove-shaped depressions or LED strips 115 on the heat sink profile 112 arranged.

Abstract

Die LED-Leuchte (1) enthƤlt ein KĆ¼hlkƶrper-Profil (2.1) aus Metall mit einem darauf angebrachten LED-Band (10) mit einer Mehrzahl von LED-Einheiten (15). Das KĆ¼hlkƶrper-Profil (2.1) mit LED-Band (10) ist in einem lichtdurchlƤssigen Ummantelungsrohr (3) gekapselt. Das LED-Band (10) ist zu einem zwischen Ummantelungsrohr (3) und KĆ¼hlkƶrper-Profil (2.1) ausgebildeten Leuchtenhohlraum (8) hin gerichtet, derart dass die LED-Einheiten (15) Licht durch den Leuchtenhohlraum (8) zum Ummantelungsrohr (3) und durch das Ummantelungsrohr (3) hindurch nach auƟen abstrahlen kƶnnen. Der Querschnittsinnenumfang des Ummantelungsrohrs (3) und der QuerschnittsauƟenumfang des KĆ¼hlkƶrper-Profils (2.1) bilden jeweils mindestens einen Kontaktbogenabschnitt (11) aus, wobei das Ummantelungsrohr (3) und das KĆ¼hlkƶrper-Profil (2.1) im Bereich der Kontaktbogenabschnitte (11) einander anliegen.

Figure imgaf001
The LED lamp (1) contains a heat sink profile (2.1) made of metal with an LED strip (10) mounted thereon with a plurality of LED units (15). The heat sink profile (2.1) with LED strip (10) is encapsulated in a translucent jacket tube (3). The LED strip (10) is directed toward a luminaire cavity (8) formed between the casing tube (3) and the heat sink profile (2.1) such that the LED units (15) transmit light through the luminaire cavity (8) to the casing tube (3 ) and can radiate out through the cladding tube (3). The cross-sectional inner circumference of the sheathing tube (3) and the cross-sectional outer circumference of the heat sink profile (2.1) each form at least one contact arc section (11), wherein the sheath tube (3) and the heat sink profile (2.1) abut each other in the region of the contact arc sections (11) ,
Figure imgaf001

Description

Die Erfindung bezieht sich auf das Gebiet der LED (Light Emitting Diodes) Leuchten und betrifft im Speziellen eine wasserdichte LED-Leuchte zu Beleuchtungszwecken nach dem Oberbegriff des Anspruchs 1.The invention relates to the field of LED (Light Emitting Diodes) lamps and more particularly relates to a waterproof LED lamp for lighting purposes according to the preamble of claim 1.

Zu Beleuchtungszwecken bedeutet, dass die Leuchte zum emittieren von Licht zwecks Wahrnehmung durch das menschliche Auge ausgelegt ist.For illumination purposes, the light is designed to emit light for the purpose of perception by the human eye.

Es sind wasserdichte LED-Leuchten bekannt, welche als Rohrleuchten ausgebildet sind. Diese umfassen ein auf einem KĆ¼hlkƶrper-Profil aus Metall angeordnetes LED-Band mit einer Mehrzahl von LED-Einheiten. Das KĆ¼hlkƶrper-Profil mit LED-Band ist in einem Ummantelungsrohr gekapselt.There are known waterproof LED lights, which are designed as tube lights. These comprise a LED strip arranged on a heat sink profile made of metal and having a plurality of LED units. The heat sink profile with LED tape is encapsulated in a sheath tube.

Eine solche LED-Leuchte ist beispielsweise in der EP 2 685 157 beschrieben. Die Anforderungen an wasserdichte LED-Leuchten sind sehr hoch und daher nicht vergleichbar mit den Anforderungen an herkƶmmliche LED-Leuchten fĆ¼r Innen- und Aussenanwendungen.Such an LED light is for example in the EP 2 685 157 described. The requirements for waterproof LED luminaires are very high and therefore not comparable to the requirements for conventional LED luminaires for indoor and outdoor applications.

So mĆ¼ssen wasserdichte LED-Leuchten eine vollstƤndige Dichtigkeit in Bezug auf Wasser aber auch in Bezug auf Wasserdampf aufweisen. Sie sollten ferner auch bestƤndig gegen Chemikalien, wie SƤuren oder Chlor sein, da Anwendungen im Nassbereich oftmals auch hohe Anforderungen an die BestƤndigkeit gegen reaktive Chemikalien stellen.For example, watertight LED luminaires must be completely watertight with respect to both water and water vapor. They should also be resistant to chemicals such as acids or chlorine, as wet applications often place high demands on resistance to reactive chemicals.

Die wasserdichte LED-Leuchte in Unterwasser-Anwendungen muss auch dem ausgesetzten Wasserdruck standhalten, ohne deformiert zu werden. Ferner muss eine effiziente WƤrmeableitung garantiert sein, um ein Ɯberhitzen der leistungsfƤhigen LED-Einheiten zu vermeiden.The waterproof LED light in underwater applications must also withstand the exposed water pressure without being deformed. Furthermore, efficient heat dissipation must be guaranteed in order to avoid overheating of the powerful LED units.

Die EP 2 685 157 beschreibt nun ein Verfahren, gemƤss welchem der freie Hohlraum der LED-Rohrleuchte mit einer lichtdurchlƤssigen Vergussmassen vergossen wird, so dass die LED-Einheiten von einer Vergussmasse umgeben sind. Dies gewƤhrleistet eine gute Abdichtung der LED-Einheiten gegen Wasser und Wasserdampf. Zudem sorgt die Vergussmasse fĆ¼r eine gute Festigkeit der LED-Rohrleuchte gegen den Wasserdruck. Die Vergussmasse unterstĆ¼tzt ferner die WƤrmeabfuhr von den LED-Einheiten.The EP 2 685 157 now describes a method according to which the free cavity of the LED tube light is potted with a translucent potting compound, so that the LED units are surrounded by a potting compound. This ensures a good seal of the LED units against water and water vapor. In addition, the potting compound ensures good strength of the LED tube light against the water pressure. The potting compound also supports heat dissipation from the LED units.

Die Vergussmasse hat allerdings den Nachteil, dass diese das Spektrum des abgestrahlten Lichtes verƤndert, so dass von aussen eine verƤnderte LED-Lichtfarbtemperatur wahrgenommen wird. Solche Effekte sind jedoch Ƥusserst unerwĆ¼nscht.However, the potting compound has the disadvantage that it changes the spectrum of the radiated light, so that externally a changed LED light color temperature is perceived. However, such effects are extremely undesirable.

Aufgabe vorliegender Erfindung ist es deshalb, eine wasserdichte LED-Leuchte vorzuschlagen, welche sowohl wasser- und wasserdampfdicht als auch bestƤndig gegen Chemikalien ist, mit welchen das Wasser versetzt ist, und welche mƶglichst keine VerƤnderung der LED-Lichtfarbtemperatur sowie der LichtintensitƤt bewirkt.Object of the present invention is therefore to propose a waterproof LED lamp, which is both water and water vapor-tight and resistant to chemicals, with which the water is added, and which causes as possible no change in the LED light color temperature and the light intensity.

Im Weiteren soll die LED-Leuchte eine gute Ableitung der WƤrme von den LED-Einheiten gewƤhrleisten und dadurch hohe Lichtleistungen ermƶglichen. Die LED-Leuchte soll zudem formstabil sein und dem Wasserdruck stand halten. Ferner soll die LED-Leuchte insbesondere auch UV- und Ozon-bestƤndig sein.In addition, the LED light should ensure a good dissipation of heat from the LED units and thereby enable high light output. The LED light should also be dimensionally stable and withstand the water pressure. Furthermore, the LED lamp should be in particular UV and ozone resistant.

Die Aufgabe wird durch die Merkmale des Anspruchs 1 gelƶst. Die abhƤngigen AnsprĆ¼che sowie die Beschreibung und die Zeichnungen beinhalten besondere AusfĆ¼hrungsformen und Weiterbildungen der Erfindung.The object is solved by the features of claim 1. The dependent claims as well as the description and the drawings contain particular embodiments and further developments of the invention.

Die LED-Leuchte enthƤlt erfindungsgemƤss ein KĆ¼hlkƶrper-Profil aus Metall mit mindestens einem darauf angeordneten LED-Band, welches eine Mehrzahl von LED-Einheiten umfasst.According to the invention, the LED luminaire contains a heat sink profile made of metal with at least one LED strip arranged thereon, which comprises a plurality of LED units.

Die LED-Leuchte kann ein einzelnes LED-Band oder mehrere LED-BƤnder umfassen.The LED light may include a single LED band or multiple LED bands.

Das KĆ¼hlkƶrper-Profil mit dem mindestens einen LED-Band ist in einem lichtdurchlƤssigen Ummantelungsrohr gekapselt. Das mindestens eine LED-Band ist zu einem zwischen Ummantelungsrohr und KĆ¼hlkƶrper-Profil ausgebildeten Leuchtenhohlraum hin gerichtet, derart dass die LED-Einheiten Licht durch den Leuchtenhohlraum zum Ummantelungsrohr und durch das Ummantelungsrohr hindurch nach aussen abstrahlen kƶnnen.The heat sink profile with the at least one LED strip is encapsulated in a translucent jacket tube. The at least one LED strip is directed toward a lamp cavity formed between the jacket tube and the heat sink profile, such that the LED units can emit light through the lamp cavity to the jacket tube and through the jacket tube to the outside.

Bei mehreren LED BƤndern kann kann jedem LED-Band ein Leuchtenhohlraum zugeordnet sein, wobei die LeuchtenhohlrƤume Ć¼ber den Querschnitt der LED-Leuchte betrachtet insbesondere voneinander abgetrennt sind.In the case of a plurality of LED strips, each LED strip can be assigned a luminaire cavity, wherein the luminaire cavities viewed over the cross section of the LED luminaire are in particular separated from one another.

GemƤss Erfindung bilden der Querschnittsinnenumfang des Ummantelungsrohrs und der Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils jeweils mindestens einen Kontaktbogenabschnitt aus, wobei das Ummantelungsrohr und das KĆ¼hlkƶrper-Profil im Bereich der Kontaktbogenabschnitte einander anliegen.According to the invention, the cross-sectional inner circumference of the cladding tube and the cross-sectional outer circumference of the heat sink profile each form at least one contact arc section, the cladding tube and the heat sink profile abutting each other in the region of the contact arc sections.

Das Ummantelungsrohr und das KĆ¼hlkƶrper-Profil kƶnnen derart ausgebildet sein, dass das Ummantelungsrohr mit mindestens 40% seines Querschnittsinnenumfanges dem Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils anliegt.The sheath tube and the heat sink profile may be formed such that the sheath tube rests with at least 40% of its cross-sectional inner circumference of the cross-sectional outer circumference of the heat sink profile.

GemƤss einer Weiterbildung der Erfindung liegt das Ummantelungsrohr mit mindestens der HƤlfte seines Querschnittsinnenumfanges, insbesondere mit mehr als der HƤlfte seines Querschnittsinnenumfanges dem Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils an.According to a development of the invention, the sheathing tube bears against the cross-sectional outer circumference of the heat sink profile with at least half of its cross-sectional inner circumference, in particular with more than half of its cross-sectional inner circumference.

Der Querschnittsinnenumfang des Ummantelungsrohres und der Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils, mit welchem das Ummantelungsrohr dem KĆ¼hlkƶrper-Profil anliegt, kann sich aus einem einzelnen oder aus mehreren Kontaktbogenabschnitte zusammensetzen. Mehrere Kontaktbogenabschnitte kƶnnen insbesondere durch LeuchtenhohlrƤume unterbrochen sein.The cross-sectional inner circumference of the cladding tube and the cross-sectional outer circumference of the heat sink profile, with which the cladding tube abuts the heat sink profile, can be composed of a single or multiple contact arc sections. Several contact arc sections can be interrupted in particular by light cavities.

So kann das KĆ¼hlkƶrperprofil mehrere entlang seines Querschnittsaussenumfanges angeordnete Kontaktbogenabschnitte ausbilden. Diese Kontaktbogenabschnitte kƶnnen von nutfƶrmigen Vertiefungen begrenzt sein. Die nutfƶrmigen Vertiefungen nehmen jeweils insbesondere ein LED-Band auf.Thus, the heat sink profile can form a plurality of contact arc sections arranged along its cross-sectional outer circumference. These contact arc sections may be delimited by groove-shaped depressions. The groove-shaped depressions in each case receive an LED band in particular.

KĆ¼hlkƶrper-Profil und Ummantelungsrohr bilden in diesem Bereich einen flƤchigen Kontakt aus. Der Kontaktschluss zwischen KĆ¼hlkƶrper-Profil und Ummantelungsrohr ergibt eine hohe StabilitƤt.Heat sink profile and cladding tube form a flat contact in this area. The contact between the heat sink profile and sheath tube results in a high stability.

Das KĆ¼hlkƶrper-Profil liegt dem Ummantelungsrohr im genannten Bereich also insbesondere bĆ¼ndig bzw. eng an. KĆ¼hlkƶrper-Profil und Ummantelungsrohr bilden im Kontaktbereich insbesondere einen Reibschluss aus.The heat sink profile is the jacket tube in the said area so in particular flush or tight. Heatsink profile and sheath tube form in the contact area in particular a frictional engagement.

Das KĆ¼hlkƶrper-Profil wird insbesondere Ć¼ber diesen flƤchigen Kontakt im Ummantelungsrohr verklemmt.The heat sink profile is jammed in particular on this flat contact in the sheath tube.

Die Abschnittsgeometrien des Querschnittsaussenumfangs des KĆ¼hlkƶrper-Profils und des Querschnittsinnenumfangs des Ummantelungsrohrs, welche einander anliegen, sind insbesondere gegengleich zueinander ausgebildet.The sectional geometries of the cross-sectional outer circumference of the heat sink profile and the cross-sectional inner circumference of the jacket tube, which abut each other, are in particular formed opposite to each other.

Da das Ummantelungsrohr insbesondere aus einem Fluorpolymer mit geringen Reibungswerten besteht, lƤsst sich das KĆ¼hlkƶrper-Profil trotz des vergleichsweise grossflƤchigen Kontaktes mit dem Ummantelungsrohr ohne grƶssere UmstƤnde in das Ummantelungsrohr einschieben.Since the jacket tube consists in particular of a fluoropolymer with low friction values, the heat sink profile can be inserted into the jacket tube without great circumstances, despite the comparatively large-area contact with the jacket tube.

Um das Einschieben des KĆ¼hlkƶrper-Profils in das Ummantelungsrohr zu ermƶglichen bzw. zu erleichtem, kann das Ummantelungsrohr vorgƤngig erwƤrmt werden, wodurch dieses geringfĆ¼gig dehnbar wird. Dieses Verfahren ist insbesondere bei langen LED-Leuchten von mehreren Metern LƤnge von Vorteil.In order to enable or facilitate the insertion of the heat sink profile into the sheath tube, the sheath tube can be previously heated, whereby this is slightly stretchable. This method is particularly advantageous for long LED lights of several meters in length.

Der flƤchige Kontakt zwischen Innenwand des Ummantelungsrohrs und KĆ¼hlkƶrper-Profil gewƤhrleistet eine effiziente WƤrmeableitung vom KĆ¼hlkƶrper-Profil durch das Ummantelungsrohr nach aussen.The surface contact between the inner wall of the jacket tube and the heat sink profile ensures efficient heat dissipation from the heat sink profile through the jacket tube to the outside.

Die LED-Leuchte ist insbesondere als LƤngskƶrper ausgebildet. Der LƤngskƶrper bildet eine LƤngsachse aus. Die LED-Leuchte weist insbesondere eine LƤngserstreckung auf, welche einem Vielfachen des Querschnittsdurchmessers entspricht.The LED light is designed in particular as a longitudinal body. The longitudinal body forms a longitudinal axis. In particular, the LED lamp has a longitudinal extension which corresponds to a multiple of the cross-sectional diameter.

Die LED-Leuchte kann entlang ihrer LƤngserstreckung geradlinig ausgebildet sein. Das heisst, die LED-Leuchte weist keine KrĆ¼mmungen auf.The LED light can be formed in a straight line along its longitudinal extent. That is, the LED lamp has no curvature.

Die LED-Leuchte mit dem Ummantelungsrohr ist insbesondere eine Rohrleuchte.The LED lamp with the jacket tube is in particular a tube lamp.

Unter dem Begriff "Rohr" soll ein lƤnglicher Hohlkƶrper verstanden werden, dessen LƤnge wesentlich grĆ¶ĆŸer als sein Durchmesser ist. Das Rohr kann definitionsgemƤss formstabil sein oder als nicht formstabiler Schlauch ausgebildet sein. Letzterer Unterschied ist mit Bezugnahme auf die fertige LED-Leuchte insofern von begrenzter Bedeutung, als dass in das Ummantelungsrohr das KĆ¼hlkƶrper-Profil eingeschoben wird und dadurch auch ein nicht formstabiler Schlauch in eine formstabile Rohrform Ć¼berfĆ¼hrt wird.The term "tube" is intended to mean an elongated hollow body whose length is substantially greater than its diameter. By definition, the tube may be dimensionally stable or be formed as a non-dimensionally stable tube. The latter Difference is of limited importance with respect to the finished LED lamp in that the heat sink profile is inserted into the sheathing tube and thereby also a non-dimensionally stable tube is transferred into a dimensionally stable tube shape.

GemƤss einer Weiterbildung ist der Querschnittsinnenumfang des Ummantelungsrohrs rund, insbesondere kreisrund bzw. kreisfƶrmig. Der Querschnittsinnenumfang des Ummantelungsrohrs kann auch oval oder ellipsenfƶrmig sein.According to a development, the cross-sectional inner circumference of the sheathing tube is round, in particular circular or circular. The cross-sectional inner circumference of the sheathing tube may also be oval or elliptical.

GemƤss einer Weiterbildung bildet der Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils mindestens einen Kreisbogenabschnitt aus, welcher dem mindestens einem Kontaktbogenabschnitt entspricht. Das KĆ¼hlkƶrper-Profil liegt mit seinem mindestens einen Kreisbogenabschnitt dem Ummantelungsrohr innenseitig an. Die Radien des kreisfƶrmigen Querschnittsinnenumfangs des Ummantelungsrohrs und des mindestens einen Kreisbogenabschnitts des Querschnittsaussenumfangs des KĆ¼hlkƶrper-Profils sind insbesondere identisch.According to a development, the cross-sectional outer circumference of the heat sink profile forms at least one circular arc section which corresponds to the at least one contact arc section. The heat sink profile lies with its at least one circular arc section of the sheath tube inside. The radii of the circular cross-sectional inner circumference of the sheathing tube and the at least one circular arc portion of the cross-sectional outer circumference of the heat sink profile are in particular identical.

Der besagte mindestens eine Kreisbogenabschnitt des KĆ¼hlkƶrper-Profils schliesst z. B. einen Winkel (Zentriwinkel) von 200Ā° (Winkelgrad) oder grƶsser, insbesondere von 220Ā° oder grƶsser, und bevorzugt von 240Ā° oder grƶsser ein. Dies trifft insbesondere dann zu, wenn das KĆ¼hlkƶrper-Profil exakt einen Kreisbogenabschnitt ausbildet.Said at least one circular arc portion of the heat sink profile closes z. B. an angle (center angle) of 200 Ā° (angular degree) or greater, in particular of 220 Ā° or greater, and preferably of 240 Ā° or greater. This is especially true when the heat sink profile forms exactly a circular arc section.

Die LED-Leuchte kann eine Leuchtenhalterung umfassen. Die LED-Leuchte ist insbesondere Ć¼ber die Leuchtenhalterung an einer externen Struktur befestigbar.The LED light may include a light fixture. In particular, the LED light can be fastened to an external structure via the light fixture.

Das Ummantelungsrohr ist insbesondere witterungsbestƤndig, wasser- und wasserdampfdicht, temperaturfest, bestƤndig gegen Chemikalien und schlagfest.The sheathing tube is particularly weather-resistant, water and water vapor-tight, temperature-resistant, resistant to chemicals and impact resistant.

Das Ummantelungsrohr besteht bevorzugt aus einem (Hochleistungs-) Kunststoff, insbesondere aus einem lichtdurchlƤssigen Fluorpolymer. LichtdurchlƤssig bedeutet, dass das Material elektromagnetische Wellen im sichtbaren Bereich passieren lƤsst. Das Ummantelungsrohr ist insbesondere transparent. Insbesondere eine hohe Transparenz des Ummantelungsrohres gewƤhrleistet einen optimalen Lichtdurchsatz.The jacket tube is preferably made of a (high-performance) plastic, in particular a translucent fluoropolymer. Translucent means that the material allows electromagnetic waves to pass in the visible range. The jacket tube is in particular transparent. In particular, a high transparency of the sheath tube ensures optimal light throughput.

Als Fluorpolymer fĆ¼r das Ummantelungsrohr eignet sich z. B. ein fluoriertes Elastomer. Fluorierte Elastomere sind z. B. Fluorelastomere wie FKM nach DIN ISO 1629, frĆ¼her auch FPM genannt. Andere Bezeichnungen sind auch FCM bzw. CFM, Fluorkautschuk oder Fluorcarbon-Elastomer. Fluorierte Elastomere kƶnnen auch Kautschuke sein, die als gemeinsames Merkmal Vinyliden(di)fluorid (VDF) als eines ihrer Monomere besitzen.As a fluoropolymer for the sheath tube is z. As a fluorinated elastomer. Fluorinated elastomers are z. B. fluoroelastomers such as FKM according to DIN ISO 1629, formerly called FPM. Other designations are also FCM or CFM, fluororubber or fluorocarbon elastomer. Fluorinated elastomers may also be rubbers which commonly share vinylidene (di) fluoride (VDF) as one of their monomers.

Das Fluorelastomer kann auch ein Mischpolymerisat aus fluorierten Kohlenwasserstoffen sein.The fluoroelastomer can also be a copolymer of fluorinated hydrocarbons.

Dies kƶnnen zum Beispiel sein:

  • Copolymere von Vinylidenfluorid (VDF) und Hexafluorpropylen (HFP) und
  • Terpolymere von VDF, HFP und Tetrafluorethylen (TFE)
These can be for example:
  • Copolymers of vinylidene fluoride (VDF) and hexafluoropropylene (HFP) and
  • Terpolymers of VDF, HFP and tetrafluoroethylene (TFE)

Ferner ist auch die Verwendung von:

  • Polymerisaten aus VDF, HFP, TFE und Perfluormethylvinylether (PMVE)
  • Polymerisaten aus VDF, TFE und Propen, sowie
  • Polymerisaten aus VDF, HFP, TFE, Perfluormethylvinylether (PMVE) und Ethen denkbar.
Furthermore, the use of:
  • Polymers of VDF, HFP, TFE and perfluoromethyl vinyl ether (PMVE)
  • Polymers of VDF, TFE and propene, as well
  • Polymers of VDF, HFP, TFE, perfluoromethyl vinyl ether (PMVE) and ethene conceivable.

Es kƶnnen beispielsweise Fluorpolymere wie:

  • Hexafluorpropylen/Vinylidenfluorid-Elastomer
  • Vinylidenfluorid/Hexafluorpropylen/Tetrafluorethylen-Copolymer
  • Copolymer aus Tetrafluorethylen und normalem Propylen (TFE P) Verwendung finden.
For example, fluoropolymers such as:
  • Hexafluoropropylene / vinylidene fluoride elastomer
  • Vinylidene fluoride / hexafluoropropylene / tetrafluoroethylene copolymer
  • Copolymer of tetrafluoroethylene and normal propylene (TFE P) Find use.

Weitere, zur Verwendung mƶgliche fluorierte Elastomere wƤren:

  • Perfluorkautschuk (FFKM)
  • Tetrafluorethylen/Propylen-Kautschuke (FEPM)
  • fluorierter Silikonkautschuk
Other possible fluorinated elastomers for use would be:
  • Perfluoro rubber (FFKM)
  • Tetrafluoroethylene / propylene rubbers (FEPM)
  • fluorinated silicone rubber

Ferner kƶnnen auch fluorhaltige Copolymere, wie Tetrafluorethylen/Hexafluorpropylen-Copolymer (FEP), Ethylen/Tetrafluorethylen-Copolymer (ETFE) und Perfluoralkoxy-Copolymer (PFA) Verwendung finden. Letzteres wird auch unter dem Markennamen TeflonĀ® vertrieben. Voraussetzung ist immer, dass die besagten Kunststoffe lichtdurchlƤssig und insbesondere transparent sind.Further, fluorine-containing copolymers such as tetrafluoroethylene / hexafluoropropylene copolymer (FEP), ethylene / tetrafluoroethylene copolymer (ETFE) and perfluoroalkoxy copolymer (PFA) can also be used. The latter is also sold under the brand name TeflonĀ®. The prerequisite is always that the said plastics are translucent and in particular transparent.

Bevorzugt findet ein Fluorelastomer (FKM), ein Perfluoralkoxy-Copolymer (PFA) oder ein Ethylen/Tetrafluorethylen-Copolymer (ETFE) im Ummantelungsrohr Verwendung.Preferably, a fluoroelastomer (FKM), a perfluoroalkoxy copolymer (PFA) or an ethylene / tetrafluoroethylene copolymer (ETFE) is used in the cladding tube.

Fluorpolymere der oben genannten Art zeichnen sich durch folgende Eigenschaften aus:

  • AlterungsbestƤndigkeit
  • BestƤndigkeit gegenĆ¼ber Ozon-, Sauerstoff-, Alterungs- und WitterungseinflĆ¼ssen
  • UV-bestƤndig
  • BestƤndigkeit gegen Chemikalien, wie SƤuren, Chlor, etc.
  • elastische Eigenschaften
  • flammwidrig und temperaturbestƤndig (z. B. in einem Temperaturbereich von -200 bis +200Ā°C)
  • elektrisch isolierend
  • wasserabweisend
  • geringer Reibungskoeffizient
  • hohe mechanische Festigkeit, insbesondere schlagzƤh
  • anti-adhƤsiv
  • verfƤrbungsresistent
  • gegebenenfalls thermoplastische Verarbeitbarkeit
Fluoropolymers of the abovementioned type are characterized by the following properties:
  • aging resistance
  • Resistance to ozone, oxygen, aging and weathering
  • UV-resistant
  • Resistance to chemicals such as acids, chlorine, etc.
  • elastic properties
  • Flame retardant and temperature resistant (eg in a temperature range of -200 to + 200 Ā° C)
  • electrically insulating
  • water repellent
  • low coefficient of friction
  • high mechanical strength, in particular impact-resistant
  • anti-adhesive
  • discoloration resistant
  • optionally thermoplastic processability

Das Ummantelungsrohr ist z. B. flexibel ausgebildet. Dies kann z. B. durch eine geringe WandstƤrke erzielt werden. So kann das Ummantelungsrohr z. B. als Schlauch ausgebildet sein, welcher z. B. nicht formstabil ist. Ein als dĆ¼nnwandige AussenhĆ¼lle ausgebildetes Ummantelungsrohr gewƤhrleistet einen sehr guten WƤrmeabfluss nach aussen.The sheathing tube is z. B. flexible. This can be z. B. can be achieved by a small wall thickness. So the sheathing tube z. B. be designed as a hose, which z. B. is not dimensionally stable. A sheath tube designed as a thin-walled outer sheath ensures a very good heat flow to the outside.

Es ist jedoch auch mƶglich, dass das Ummantelungsrohr formstabil ausgebildet ist. Das Ummantelungsrohr kann elastische Eigenschaften aufweisen.However, it is also possible that the sheath tube is formed dimensionally stable. The jacket tube may have elastic properties.

Das UmhĆ¼llungs- bzw. Ummantelungsrohr kann eine WandstƤrke von 0.1 mm oder mehr, insbesondere von 0.2 mm oder mehr aufweisen. Das Ummantelungsrohr kann eine WandstƤrke von 2 mm oder weniger, insbesondere von 1 mm oder weniger aufweisen.The cladding tube may have a wall thickness of 0.1 mm or more, more preferably 0.2 mm or more. The jacket tube may have a wall thickness of 2 mm or less, more preferably 1 mm or less.

Das Ummantelungsrohr gewƤhrleistet mit der angegebenen WandstƤrke einen guten WƤrmeabfluss und vermag dennoch die mechanischen, chemischen und physikalischen Anforderungen, wie den gewĆ¼nschten Lichtdurchgangswert, zu erfĆ¼llen.The cladding tube ensures a good heat flow with the given wall thickness and can still meet the mechanical, chemical and physical requirements, such as the desired light transmission value.

Das Ummantelungsrohr ist im Querschnitt insbesondere geschlossen ausgebildet. Das Ummantelungsrohr weist bevorzugt lediglich ein oder zwei stirnseitig offene Enden auf.The sheathing tube is formed in cross section in particular closed. The jacket tube preferably has only one or two ends open at the ends.

GemƤss einer besonderen Weiterbildung ist das Ummantelungsrohr entlang seines Querschnittsumfanges unterbrochen und weist eine Ɩffnung auf. Die Ɩffnung kann in RohrlƤngsrichtung betrachtet abschnittsweise oder durchgehend ausgebildet sein.According to a particular embodiment, the sheathing tube is interrupted along its cross-sectional circumference and has an opening. The opening can be viewed in the tube longitudinal direction sections or continuously formed.

So kann die Ɩffnung z. B. eine sich in RohrlƤngsrichtung durchgehend oder mit Unterbrechungen erstreckende LƤngsƶffnung sein, welche z. B. schlitzfƶrmig ist.So the opening z. B. be in the tube longitudinal direction continuously or intermittently extending longitudinal opening, which z. B. is slot-shaped.

Das KĆ¼hlkƶrper-Profil bildet Ć¼ber die Ɩffnung zweckmƤssig einen wƤrmeleitenden Kontakt, insbesondere Direktkontakt, mit einer Leuchtenhalterung aus. Das KĆ¼hlkƶrper-Profil ist Ć¼ber die Ɩffnung insbesondere mit der Leuchtenhalterung verbunden.The heat sink profile expediently forms a heat-conducting contact, in particular direct contact, with a light fixture via the opening. The heat sink profile is connected via the opening in particular with the lamp holder.

Die Leuchtenhalterung kann so als KĆ¼hlkƶrpererweiterung dienen, Ć¼ber welche WƤrmeenergie vom KĆ¼hlkƶrper-Profil an die Umgebung abgefĆ¼hrt wird. Durch die Ɩffnung im Ummantelungsrohr fƤllt dessen thermisch isolierende Wirkung weg.The light fixture can thus serve as a heat sink extension over which heat energy is dissipated from the heat sink profile to the environment. Through the opening in the casing tube whose thermal insulating effect falls away.

Das offene Ummantelungsrohr ist gegenĆ¼ber der Leuchtenhalterung gegen den Eintritt von Wasser und Wasserdampf insbesondere abgedichtet.The open sheath tube is in particular sealed against the light fixture against the ingress of water and water vapor.

Das Ummantelungsrohr kann eine runde, insbesondere kreisrunde bzw. kreisfƶrmige Querschnittsform aufweisen. Die Querschnittsform kann allerdings auch oval oder elliptisch sein.The jacket tube may have a round, in particular circular or circular cross-sectional shape. However, the cross-sectional shape may also be oval or elliptical.

Das KĆ¼hlkƶrper-Profil dient wie bereits erwƤhnt als KĆ¼hlkƶrper und besteht daher aus einem gut wƤrmeleitenden Metall. Das KĆ¼hlkƶrper-Profil besteht insbesondere aus Aluminium oder einer Legierung davon. Kupfer oder eine Kupferlegierung ist ebenfalls denkbar. Ferner kann das KĆ¼hlkƶrper-Profil aus Nanopartikeln hergestellt sein.The heat sink profile serves as already mentioned as a heat sink and therefore consists of a good heat conducting metal. The heat sink profile is in particular made of aluminum or an alloy thereof. Copper or a copper alloy is also conceivable. Furthermore, the heat sink profile can be made of nanoparticles.

Es kann zum Beispiel auch vorgesehen sein, dass zur Verbesserung der WƤrmeableitung Streifen aus Kupfer in die Vertiefung eines KĆ¼hlkƶrper-Profils aus Aluminium eingelegt werden, Ć¼ber welchen dann das LED-Band angeordnet wird.It can also be provided, for example, that in order to improve the heat dissipation strips of copper are inserted into the recess of a heat sink profile made of aluminum, via which the LED strip is then arranged.

Das KĆ¼hlkƶrper-Profil liegt bevorzugt als LƤngsprofil vor. Das KĆ¼hlkƶrper-Profil ist insbesondere ein Rundprofil. Das KĆ¼hlkƶrper-Profil ist insbesondere als Vollprofil ausgebildet. Das KĆ¼hlkƶrper-Profil kann z. B. aus einer Rundstange hergestellt sein.The heat sink profile is preferably present as a longitudinal profile. The heat sink profile is in particular a round profile. The heat sink profile is designed in particular as a solid profile. The heat sink profile can z. B. be made of a round rod.

Das KĆ¼hlkƶrper-Profil kann allerdings auch als Hohlprofil, d.h. als Rohrkƶrper, ausgebildet sein. Allerdings betrƤgt die Wanddicke des Rohrkƶrpers insbesondere mindestens 10%, ganz besonders mindestens 15% und zweckmƤssig mindestens 20% des Rohrdurchmessers.However, the heat sink profile can also be used as a hollow profile, i. be designed as a tubular body. However, the wall thickness of the tubular body is in particular at least 10%, especially at least 15% and usefully at least 20% of the pipe diameter.

Das KĆ¼hlkƶrper-Profil weist insbesondere eine LƤngserstreckung auf, welche einem Vielfachen des grƶssten Querschnittsdurchmessers entspricht. Das KĆ¼hlkƶrper-Profil ist bevorzugt geradlinig ausgebildet.The heat sink profile has in particular a longitudinal extent, which corresponds to a multiple of the largest cross-sectional diameter. The heat sink profile is preferably rectilinear.

Die Querschnittsgeometrie kann dabei Ć¼ber die gesamte LƤngserstreckung des KĆ¼hlkƶrper-Profils gleichbleibend sein.The cross-sectional geometry can be constant over the entire longitudinal extent of the heat sink profile.

Das KĆ¼hlkƶrper-Profil ist Ć¼ber seine Querschnittsform, d.h. quer zur LƤngsrichtung, insbesondere einteilig ausgebildet. Es ist auch mƶglich, dass das KĆ¼hlkƶrper-Profil Ć¼ber seine Querschnittsform mehrteilig ausgebildet ist.The heat sink profile is over its cross-sectional shape, i. transverse to the longitudinal direction, in particular formed in one piece. It is also possible that the heat sink profile is formed in several parts over its cross-sectional shape.

Das KĆ¼hlkƶrper-Profil kann Ć¼ber seine Querschnittsform auch zwiebelschalenartig aus mehreren schalenfƶrmigen Teilprofilen zusammengesetzt sein, welche in ProfillƤngsrichtung relativ zueinander verschiebbar angeordnet sind.The heat sink profile can also be composed on the basis of its cross-sectional shape onion shell-like from a plurality of shell-shaped partial profiles, which are arranged relative to each other displaceable in the profile longitudinal direction.

Das KĆ¼hlkƶrper-Profil kann sich in LƤngsrichtung aus mehreren hintereinander angeordneten Teilprofilen zusammensetzen.The heat sink profile can be composed in the longitudinal direction of several successively arranged sub-profiles.

GemƤss einer Weiterbildung der Erfindung bildet das KĆ¼hlkƶrper-Profil mindestens eine nutfƶrmige Vertiefung, insbesondere eine LƤngsnut aus, in welcher das mindestens eine LED-Band angeordnet ist. Die mindestens eine nutfƶrmige Vertiefung verlƤuft insbesondere parallel zur ProfillƤngsrichtung. Die mindestens eine nutfƶrmige Vertiefung kann z. B. mittels spanender Technik aus dem KĆ¼hlkƶrper-Profil herausgearbeitet, insbesondere gefrƤst sein.According to a development of the invention, the heat sink profile forms at least one groove-shaped recess, in particular a longitudinal groove, in which the at least one LED strip is arranged. The at least one groove-shaped Recess runs in particular parallel to the profile longitudinal direction. The at least one groove-shaped depression can, for. B. worked out by means of cutting technology from the heat sink profile, in particular milled.

Die mindestens eine nutfƶrmige Vertiefung wird z. B. aus einem Rundprofil hergestellt, indem vom Profilquerschnitt ein Kreisabschnitt abgetragen und, bezogen auf die Kreissehne, im Weiteren die Vertiefung, flankiert von zwei Profilflanken, eingebracht wird.The at least one groove-shaped depression is z. B. made of a round profile, by removing a circular section from the profile cross-section and, based on the chord, in the further recess, flanked by two profile edges, is introduced.

Anstelle eines Kreisabschnittes kann auch eine becherfƶrmige Vertiefung abgetragen werden und in der Basis und/oder in den Flanken der becherfƶrmigen Vertiefung die mindestens eine nutfƶrmige Vertiefung fĆ¼r das mindestens eine LED-Band eingebracht werden.Instead of a circular section, a cup-shaped recess can be removed and in the base and / or in the flanks of the cup-shaped recess, the at least one groove-shaped recess for the at least one LED band can be introduced.

Die mindestens eine nutfƶrmige Vertiefung kann eine Querschnittsbreite aufweisen, welche mindestens die HƤlfte, insbesondere mindestens zwei Drittel des grƶssten Querschnittsdurchmessers des KĆ¼hlkƶrper-Profils oder mehr betrƤgt. Dadurch wird gewƤhrleistet, dass das Licht optimal von den LED-Einheiten zum Ummantelungsrohr abgestrahlt werden kann.The at least one groove-shaped depression may have a cross-sectional width which is at least half, in particular at least two thirds of the largest cross-sectional diameter of the heat sink profile or more. This ensures that the light can be optimally radiated from the LED units to the cladding tube.

Die mindestens eine nutfƶrmige Vertiefung formt insbesondere zusammen mit dem Ummantelungsrohr den Leuchtenhohlraum.The at least one groove-shaped recess forms, in particular together with the jacket tube, the lamp cavity.

Der Leuchtenhohlraum enthƤlt insbesondere ein Gas, wie Luft. Im Leuchtenhohlraum kann AtmosphƤrendruck oder ein Ɯberdruck vorherrschen. Der Leuchtenhohlraum bildet eine formstabile (Luft-) Kammer aus.The lamp cavity contains in particular a gas, such as air. The luminaire cavity may be subject to atmospheric pressure or overpressure. The luminaire cavity forms a dimensionally stable (air) chamber.

GemƤss einer Weiterbildung ist die mindestens eine nutfƶrmige Vertiefung so ausgelegt ist, dass die Bauteile des LED-Bandes und gegebenenfalls weitere elektronische Bauteile, welche in der nutfƶrmigen Vertiefung angeordnet sind zum Ummantelungsrohr hin nicht Ć¼ber die nutfƶrmige Vertiefung hinausragen.According to a development, the at least one groove-shaped recess is designed so that the components of the LED strip and optionally further electronic components which are arranged in the groove-shaped depression do not protrude beyond the groove-shaped depression towards the jacket tube.

Das KĆ¼hlkƶrper-Profil kann exakt eine nutfƶrmige Vertiefung enthalten, in welcher mindestens ein LED-Band angeordnet ist.The heat sink profile may contain exactly a groove-shaped recess in which at least one LED strip is arranged.

Es ist allerdings auch mƶglich, dass das KĆ¼hlkƶrper-Profil entlang seines Querschnittsaussenumfanges mehrere nutfƶrmige Vertiefungen ausbildet, in welchen jeweils mindestens ein LED-Band angeordnet ist. Die nutfƶrmigen Vertiefungen sind insbesondere radial nach aussen offen.However, it is also possible that the heat sink profile along its cross-sectional outer circumference forms a plurality of groove-shaped depressions, in each of which at least one LED band is arranged. The groove-shaped recesses are in particular radially open to the outside.

Die LED-BƤnder sind in den nutfƶrmigen Vertiefungen insbesondere radial nach aussen weisend ausgerichtet. Die LED-BƤnder verlaufen insbesondere parallel zueinander in ProfillƤngsrichtung.The LED strips are aligned in the groove-shaped recesses in particular pointing radially outwards. The LED strips run in particular parallel to each other in the profile longitudinal direction.

Es ist grundsƤtzlich mƶglich, dass in einer nutfƶrmigen Vertiefung auch mehrere LED-BƤnder, insbesondere parallel zueinander angeordnet sind.It is in principle possible for a plurality of LED strips, in particular parallel to one another, to be arranged in a groove-shaped depression.

Die nutfƶrmigen Vertiefungen sind Ć¼ber jeweilige Profilflanken, wie nachfolgend noch erwƤhnt, gegenseitig voneinander abgegrenzt. Zwischen den Profilflanken zweier benachbarter nutfƶrmiger Vertiefungen wird jeweils insbesondere ein Kontaktbogenabschnitt der weiter oben beschriebenen Art ausgebildet.The groove-shaped depressions are delimited from one another via respective profile flanks, as mentioned below. In each case, in particular, a contact arc section of the type described above is formed in each case between the profile flanks of two adjacent groove-shaped depressions.

Jede nutfƶrmige Vertiefung bildet insbesondere einen separaten Leuchthohlraum aus.Each groove-shaped depression forms in particular a separate illuminated cavity.

Das Ummantelungsrohr weist im Weiteren einen, den Leuchtenhohlraum begrenzenden, ungestĆ¼tzten Querschnittsumfangsabschnitt auf.The jacket tube further comprises a, the lamp cavity bounding, unsupported cross-sectional peripheral portion.

Der ungestĆ¼tzte Querschnittsumfangsabschnitt bildet beispielsweise einen Bogen, insbesondere Kreisbogen aus. Der Kreisbogen schliesst insbesondere einen Winkel (Zentriwinkel) von 120Ā° oder kleiner ein.The unsupported cross-sectional peripheral portion forms, for example, a bow, in particular a circular arc. The circular arc includes in particular an angle (center angle) of 120 Ā° or smaller.

Das KĆ¼hlkƶrper-Profil enthƤlt insbesondere zwei, die nutfƶrmige Vertiefung seitlich begrenzende Profilflanken, welchen das Ummantelungsrohr aussenseitig anliegt. Die Profilflanken stĆ¼tzen das Ummantelungsrohr bevor dieses in den ungestĆ¼tzten Querschnittsumfangsabschnitt Ć¼bergeht.The heat sink profile contains in particular two, the groove-shaped depression laterally delimiting profile flanks, which rests on the outer side of the sheath tube. The profile flanks support the sheath tube before it merges into the unsupported cross-sectional peripheral portion.

GemƤss einer Weiterbildung enthƤlt das KĆ¼hlkƶrper-Profil eine weitere Ausnehmung, in welcher eine Sensoreinheit angeordnet ist. Die Ausnehmung ist in ProfillƤngsrichtung insbesondere nicht durchgehend.According to a development, the heat sink profile includes a further recess in which a sensor unit is arranged. The recess is not continuous in profile longitudinal direction in particular.

Die Sensoreinheit umfasst einen Temperatursensor, welche die Temperatur des KĆ¼hlkƶrper-Profils misst. Die Sensoreinheit kann ferner einen WƤrmeschutzschalter beinhalten, welcher die Stromzufuhr zu den LED-Einheiten bei einer TemperaturĆ¼berschreitung reguliert. Mittels der Sensoreinheit kann die Temperatur beispielsweise auch von extern via der LED-Steuerung reguliert werden, um so eine Ɯberhitzung zu vermeiden.The sensor unit includes a temperature sensor that measures the temperature of the heat sink profile. The sensor unit may further include a thermal circuit breaker which regulates the power supply to the LED units when the temperature is exceeded. By means of the sensor unit, for example, the temperature can also be regulated externally via the LED control in order to avoid overheating.

Das LED-Band ist insbesondere direkt in der nutfƶrmigen Vertiefung auf das KĆ¼hlkƶrper-Profil aufgebracht, was eine optimale WƤrmeabfuhr sicher stellt. Das LED-Band ist mit dem KĆ¼hlkƶrper-Profil insbesondere verbunden, z. B. Ć¼ber eine Klebverbindung.The LED strip is applied in particular directly in the groove-shaped depression on the heat sink profile, which ensures optimal heat dissipation. The LED band is in particular connected to the heat sink profile, z. B. via an adhesive bond.

Zwischen dem KĆ¼hlkƶrper-Profil und dem LED-Band wird insbesondere ein direkter WƤrmeschluss ausgebildet, womit eine optimale WƤrmeabfuhr durch das KĆ¼hlkƶrper-Profil sichergestellt wird. Dies gewƤhrleistet eine lange Lebensdauer der leistungsstarken Leuchtdioden.Between the heat sink profile and the LED strip in particular a direct heat dissipation is formed, whereby an optimal heat dissipation is ensured by the heat sink profile. This ensures a long life of the powerful light emitting diodes.

Das LED-Band kann z. B. eine Gesamthƶhe von bis 5 mm aufweisen.The LED tape can z. B. have a total height of up to 5 mm.

Das LED-Band umfasst einen band- bzw. streifenfƶrmigen LED-TrƤger mit Leiterbahnen, Ć¼ber welche den LED-Einheiten elektrische Energie und/oder Steuersignale Ć¼bermittelt werden. Der streifenfƶrmige LED-TrƤger ist bevorzugt flexibel, d.h. biegsam ausgebildet. Der streifenfƶrmige LED-TrƤger weist zum Beispiel eine Dicke von 0.1 bis 2 mm auf.The LED strip comprises a band-shaped or strip-shaped LED carrier with printed conductors, via which the LED units electrical energy and / or control signals are transmitted. The strip-shaped LED carrier is preferably flexible, i. made flexible. The strip-shaped LED carrier has, for example, a thickness of 0.1 to 2 mm.

Auf dem streifenfƶrmigen LED-TrƤger sind eine Mehrzahl von LED-Einheiten in LƤngserstreckung des LED-Bandes hintereinander und z. B. in Abstand zueinander angeordnet. Die LED-Einheiten sind zum Beispiel als LED-Chips ausgebildet. Die LED-Einheiten sind auf dem streifenfƶrmigen LED-TrƤger befestigt. Der LED-TrƤger entspricht dabei der Platine.On the strip-shaped LED support are a plurality of LED units in the longitudinal extension of the LED strip one behind the other and z. B. arranged at a distance from each other. The LED units are designed, for example, as LED chips. The LED units are mounted on the strip-shaped LED carrier. The LED carrier corresponds to the board.

Entsprechend bildet das LED-Band, umfassend LED-Einheiten und Leiterbahnen auf dem streifenfƶrmigen LED-TrƤger eine vollstƤndige Funktionseinheit aus.Accordingly, the LED strip comprising LED units and printed conductors on the strip-shaped LED carrier forms a complete functional unit.

Das Ummantelungsrohr weist insbesondere zwei offene Rohrenden auf. Das Ummantelungsrohr ist insbesondere von einem als Langware, z. B. Rollenware, vorliegenden Ummantelungsrohr auf Mass zugeschnitten.The jacket tube has in particular two open tube ends. The jacket tube is in particular of a long goods, z. B. rolls, present sheath tube tailored to measure.

Die LED-Leuchte bzw. das dazugehƶrige Ummantelungsrohr ist an den offenen Enden Ć¼ber jeweils eine Dichtungsanordnung wasser- und wasserdampfdicht nach aussen abgedichtet. Die Dichtungsanordnung ist insbesondere (wasser-) druckbestƤndig (z. B. bis 10 bar) sowie auch bestƤndig gegen Chemikalien der bereits genannten Art.The LED light or the associated sheathing tube is sealed at the open ends via a respective sealing arrangement water and water vapor-tight to the outside. The sealing arrangement is in particular (water) pressure-resistant (eg up to 10 bar) and also resistant to chemicals of the type already mentioned.

Die Dichtungsanordnung kann ein Verschlusselement enthalten, welches in das offene Rohrende eingreift und/oder dieses Ć¼bergreift.The seal assembly may include a closure member which engages and / or engages the open tube end.

Das Verschlusselement kann ein Stopfen sein, welcher mit einem Abschnitt in das offene Rohrende eingefĆ¼hrt ist. Das Verschlusselement kann auch eine Kappe sein, welche mit einem Abschnitt Ć¼ber das offene Rohrende geschoben ist.The closure element may be a plug, which is inserted with a portion in the open end of the pipe. The closure element can also be a cap, which is pushed with a portion over the open end of the tube.

Ferner kann die Dichtungsanordnung Dichtungselemente, wie Dichtungsringe enthalten, welche die Verbindung zwischen Verschlusselement und Ummantelungsrohr abdichten.Furthermore, the sealing arrangement may include sealing elements, such as sealing rings, which seal the connection between the closure element and the jacket tube.

Die Dichtungsanordnung verschliesst die Rohrenden jeweils fest mechanisch.The sealing arrangement closes the pipe ends firmly mechanically.

Die Leitungsverbindungen sind beispielsweise Ć¼ber das wenigstens eine Rohrende in das Innere der Leuchte gefĆ¼hrt. Die Leitungsverbindungen werden zum Beispiel durch das Verschlusselement gefĆ¼hrt.The line connections are guided, for example, via the at least one pipe end into the interior of the luminaire. The line connections are guided, for example, through the closure element.

Um das Eindiffundieren chemischer Substanzen zu verhindern, sind die am Anfang und Ende des Ummantelungsrohrs angebrachten Dichtungsanordnungen, insbesondere deren Dichtelemente, bevorzugt auch chemisch bestƤndig.In order to prevent the diffusion of chemical substances, the sealing arrangements mounted at the beginning and end of the sheathing tube, in particular their sealing elements, are preferably also chemically resistant.

Die Dichtelemente kƶnnen aus einem Fluorpolymer, beispielsweise aus einem FPM (Fluorelastomer), insbesondere aus einem der oben aufgefĆ¼hrten Fluorelastomer sein.The sealing elements may be made of a fluoropolymer, for example of an FPM (fluoroelastomer), in particular of one of the above-mentioned fluoroelastomer.

Das Einbringen von LED-BƤndern in Ummantelungsrohre ermƶglicht die Herstellung von LED-Leuchten von mehreren Meter LƤnge.The introduction of LED strips in cladding tubes allows the production of LED lights of several meters in length.

Die erfindungsgemƤsse LED-Leuchte ist insbesondere eine LED-Unterwasser-Leuchte fĆ¼r Unterwasser-Anwendungen.The inventive LED light is in particular an LED underwater light for underwater applications.

Die erfindungsgemƤsse LED-Leuchte findet insbesondere Verwendung in SchwimmbƤdern, Poolanlagen, in Wellness-Anlagen, in Brunnenanlagen, in Teichen, in Brunnenstuben von Trinkwasserversorgungen, in Autowaschanlagen, in stehenden GewƤssern, in Fliesswasserbereichen und generell in Nassbereichen, wo ein permanenter oder temporƤrer Kontakt der LED-Leuchte mit Wasser und Wasserdampf sowie ChemikaliendƤmpfe mƶglich sein soll.The inventive LED light is used in particular in swimming pools, pool areas, in wellness facilities, in wells, in ponds, in wells of drinking water supplies, in car washes, in standing Waters, in river water areas and generally in wet areas, where a permanent or temporary contact of the LED light with water and steam and chemical vapors should be possible.

Die LED-Leuchte kann z. B. eine LƤnge von 5 cm bis zu 10 m aufweisen. Der Innendurchmesser der LED-Leuchte kann 5 bis 30 mm, insbesondere 10 bis 20 mm aufweisen. Innendurchmesser von grƶsser 30 mm sind allerdings ebenfalls mƶglich. Im entsprechend gleichen Bereich kann der grƶsste Durchmesser des KĆ¼hlkƶrper-Profils liegen.The LED light can z. B. have a length of 5 cm up to 10 m. The inner diameter of the LED light can be 5 to 30 mm, in particular 10 to 20 mm. Inner diameters larger than 30 mm are also possible. In the same area the largest diameter of the heat sink profile can be.

Die LED-Leuchte ist fĆ¼r WasserdrĆ¼cke von 3 bar oder mehr geeignet, ohne dass diese z. B. deformiert und die LED-Einheiten beschƤdigt wĆ¼rden. Die grossflƤchige WandberĆ¼hrung des KĆ¼hlkƶrper-Profils sorgt einerseits fĆ¼r eine hohe Festigkeit der Leuchte sowie fĆ¼r eine ausgezeichnete WƤrmeableitung. Dadurch lassen sich besonders lichtstarke LED-Einheiten einsetzen.The LED light is suitable for water pressures of 3 bar or more without these z. B. deformed and the LED units would be damaged. The large-surface wall contact of the heat sink profile ensures on the one hand for a high strength of the lamp and for excellent heat dissipation. As a result, particularly bright LED units can be used.

Im Folgenden wird der Erfindungsgegenstand jeweils anhand eines AusfĆ¼hrungsbeispiels, welches in den beiliegenden Zeichnungen dargestellt ist, nƤher erlƤutert. Es zeigen jeweils schematisch:

Figur 1
eine perspektivische Ansicht einer LED-Rohrleuchte;
Figur 2
eine Querschnittsansicht der LED-Rohrleuchte gemƤss Figur 1;
Figur 3
eine Querschnittsansicht eines KĆ¼hlkƶrper-Profils;
Figur 4
eine perspektivische Ansicht einer weiteren LED-Rohrleuchte;
Figur 5a-5d
Querschnittsansichten von weiteren KĆ¼hlkƶrper-Profilen;
Figur 6a-6d
Querschnittsansichten von weiteren LED-Rohrleuchten;
Figur 7a
eine perspektivische Ansicht einer weiteren LED-Rohrleuchte;
Figur 7b
eine Querschnittsansicht der LED-Rohrleuchte gemƤss Figur 7a;
Figur 8
Querschnittsansicht einer weiteren LED-Rohrleuchte;
Figur 9
Querschnittsansicht einer weiteren LED-Rohrleuchte;
Figur 10
Querschnittsansicht einer weiteren LED-Rohrleuchte;
Figur 11
Querschnittsansicht einer weiteren LED-Rohrleuchte.
In the following, the subject invention will be explained in more detail with reference to an embodiment which is illustrated in the accompanying drawings. Each show schematically:
FIG. 1
a perspective view of an LED tube light;
FIG. 2
a cross-sectional view of the LED tube light according to FIG. 1 ;
FIG. 3
a cross-sectional view of a heat sink profile;
FIG. 4
a perspective view of another LED tube light;
Figure 5a-5d
Cross-sectional views of other heat sink profiles;
Figure 6a-6d
Cross-sectional views of other LED tube lights;
Figure 7a
a perspective view of another LED tube light;
FIG. 7b
a cross-sectional view of the LED tube light according to Figure 7a ;
FIG. 8
Cross-sectional view of another LED tube light;
FIG. 9
Cross-sectional view of another LED tube light;
FIG. 10
Cross-sectional view of another LED tube light;
FIG. 11
Cross-sectional view of another LED tube light.

GrundsƤtzlich sind in den Figuren gleiche Teile mit gleichen Bezugszeichen versehen.Basically, the same parts are provided with the same reference numerals in the figures.

Die wasserdichte LED-Rohrleuchte 1, 1' gemƤss Figur 1 und 2 sowie Figur 4 umfasst ein KĆ¼hlkƶrper-LƤngsprofil 2.1 mit einer LƤngsnut 6, in welche ein LED-Band 10 eingelegt und mit dem KĆ¼hlkƶrper-LƤngsprofil 2.1 verbunden ist. Das LED-Band 10 enthƤlt eine Mehrzahl von in LƤngsrichtung des KĆ¼hlkƶrper-LƤngsprofil 2.1 hintereinander und voneinander beabstandet angeordnete LED-Einheiten 15.The waterproof LED tube light 1, 1 'according to FIGS. 1 and 2 such as FIG. 4 comprises a heat sink longitudinal profile 2.1 with a longitudinal groove 6, in which an LED strip 10 is inserted and connected to the heat sink longitudinal profile 2.1. The LED strip 10 includes a plurality of longitudinally of the heat sink longitudinal profile 2.1 one behind the other and spaced from each other arranged LED units 15th

Das KĆ¼hlkƶrper-LƤngsprofil 2.1 mit dem LED-Band 10 ist in ein lichtdurchlƤssiges Ummantelungsrohr 3 aus Kunststoff eingeschoben.The heat sink longitudinal profile 2.1 with the LED strip 10 is inserted into a translucent casing tube 3 made of plastic.

Das chemikalien- und witterungsbestƤndige Ummantelungsrohr 3 ist beispielsweise aus transparentem Teflon. Die Ummantelung des Elektrokabels 7 ist beispielsweise aus FPM.The chemical and weather-resistant jacket tube 3 is made of transparent Teflon, for example. The sheath of the electric cable 7 is for example made of FPM.

Das Ummantelungsrohr 3 und entsprechend sein Querschnittsinnenumfang sind kreisfƶrmig ausgebildet.The sheathing tube 3 and its cross-sectional inner circumference are circular.

Der Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils 2.1 weist einen Kreisbogenabschnitt 11 (Kontaktbogenabschnitt), welcher einen Winkel (Zentriwinkel) von ungefƤhr 255Ā° einschliesst. Das KĆ¼hlkƶrper-Profil 2.1 liegt mit seinem Kreisbogenabschnitt 11 bĆ¼ndig am Ummantelungsrohr 3 an und bildet so mit diesem einen flƤchigen Kontakt aus.The cross-sectional outer circumference of the heat sink profile 2.1 has a circular arc section 11 (contact arc section) which encloses an angle (center angle) of approximately 255 Ā°. The heat sink profile 2.1 is flush with its circular arc section 11 on the sheathing tube 3 and thus forms with this a flat contact.

Das LED-Band 10 ist im Nutboden angeordnet. Im Weiteren ist in der LƤngsnut 6 auch eine Steuerungselektronik 12 fĆ¼r die LED-Einheiten 15 angeordnet (siehe Figur 2).The LED strip 10 is arranged in the groove bottom. In addition, a control electronics 12 for the LED units 15 is arranged in the longitudinal groove 6 (see FIG. 2 ).

Die Tiefe der LƤngsnut 6, ist so gewƤhlt, dass die in der LƤngsnut 6 angeordneten Elektronik-Komponenten 12, 15 zum Ummantelungsrohr 3 hin nicht Ć¼ber die LƤngsnut 6 hinausragen.The depth of the longitudinal groove 6 is selected so that the electronic components 12, 15 arranged in the longitudinal groove 6 do not protrude beyond the longitudinal groove 6 towards the jacket tube 3.

Der Querschnitt des Ummantelungsrohrs 3 bildet einen ungestĆ¼tzten Kreisbogenabschnitt 13 aus, welcher zusammen mit der LƤngsnut 6 einen Leuchtenhohlraum 8 einschliesst.The cross-section of the sheathing tube 3 forms an unsupported circular arc section 13 which, together with the longitudinal groove 6, encloses a lighting cavity 8.

Die LƤngsnut 6 wird in Querschnittsansicht seitlich von zwei Profilflanken 9a, 9b begrenzt. Das Ummantelungsrohr 3 liegt den Profilflanken 9a, 9b aussenseitig an und wird durch diese gestĆ¼tzt bevor dieses in den ungestĆ¼tzten Kreisbogenabschnitt 13 Ć¼bergeht.The longitudinal groove 6 is bounded laterally in cross-sectional view by two profile flanks 9a, 9b. The jacket tube 3 rests against the profile flanks 9a, 9b on the outside and is supported by this before it passes into the unsupported circular arc section 13.

Die LED-Einheiten 15 strahlen nun das Licht in den Leuchtenhohlraum 8 zum Ummantelungsrohr 3 hin ab. Da der Leuchtenhohlraum 8 nicht mit einer Vergussmasse, verfĆ¼llt ist, weist das Licht beim Verlassen des Ummantelungsrohrs 3 keine VerƤnderung in der IntensitƤt und der Farbe auf. Durch die besondere Ausbildung von Ummantelungsrohr 3, KĆ¼hlkƶrper-Profil 2.1 und Kontaktabschnitt 11 zwischen Ummantelungsrohr 3 und KĆ¼hlkƶrper-Profil 2.1 ist der Leuchtenhohlraum 8 auch bei WasserdrĆ¼cken von 3 bar oder hƶher formstabil.The LED units 15 now radiate the light in the lamp cavity 8 to the sheath tube 3 out. Since the luminaire cavity 8 is not filled with a potting compound, the light does not show any change in intensity and color when it leaves the jacket tube 3. Due to the special design of sheath tube 3, heat sink profile 2.1 and contact portion 11 between sheath tube 3 and heat sink profile 2.1 of the light cavity 8 is dimensionally stable even at water pressures of 3 bar or higher.

Das KĆ¼hlkƶrper-Profil 2.1 enthƤlt ferner auf seiner, der LƤngsnut 6 gegenĆ¼ber liegenden Seite eine weitere Ausnehmung 18 bzw. Vertiefung, in welcher eine Sensoreinheit 16 angeordnet ist. Die Sensoreinheit 16 umfasst einen Temperatursensor zum Messen der Temperatur des KĆ¼hlkƶrper-Profils 2.1 sowie einen WƤrmeschutzschalter, welcher bei einer Ɯberhitzung die Stromzufuhr zu den LED-Einheiten 15 unterbricht.The heat sink profile 2.1 further includes on its, the longitudinal groove 6 opposite side another recess 18 or recess, in which a sensor unit 16 is arranged. The sensor unit 16 comprises a temperature sensor for measuring the temperature of the heat sink profile 2.1 and a heat protection switch, which interrupts the power supply to the LED units 15 in the event of overheating.

WƤhrend die LED-Leuchte gemƤss AusfĆ¼hrungsform nach Figur 4 noch nicht endseitig verschlossen ist, sind die Rohrenden der AusfĆ¼hrungsform nach Figur 1 jeweils mittels einer Dichtungsanordnung 4, 5 mit Rohrstopfen abgedichtet. Durch die eine Dichtungsanordnung 4 bzw. Rohrstopfen ist das Leitungskabel 7 hindurchgefĆ¼hrt.While the LED light according to the embodiment according to FIG. 4 is not closed at the end, the pipe ends of the embodiment according to FIG. 1 each sealed by a seal assembly 4, 5 with pipe plug. Through the one seal assembly 4 or pipe plug the cable 7 is passed.

Die Figuren 3 sowie 5a bis 5b zeigen verschiedene AusfĆ¼hrungsformen von KĆ¼hlkƶrper-Profilen 2.1-2.5. Die Geometrie der gezeigten AusfĆ¼hrungsformen sind an LED-BƤnder von unterschiedlichen Breiten angepasst. Entsprechend weisen die KĆ¼hlkƶrper-Profile 2.1-2.5 insbesondere LƤngsnuten 6 von unterschiedlicher Breite auf.The Figures 3 and FIGS. 5a to 5b show various embodiments of heat sink profiles 2.1-2.5. The geometry of the embodiments shown are adapted to LED strips of different widths. Accordingly, the heat sink profiles 2.1-2.5 in particular longitudinal grooves 6 of different width.

Die Breite der LƤngsnut 6 lƤsst sich bei gleichbleibendem Radius des KĆ¼hlkƶrper-Profils 2.1-2.5 dadurch variieren, indem unterschiedlich grosse Kreissegmente am Ausgangsprofil des KĆ¼hlkƶrper-Profils 2.1-2.5 abgetragen werden.The width of the longitudinal groove 6 can be varied while maintaining the radius of the heat sink profile 2.1-2.5 by different sized circular segments are removed at the output profile of the heat sink profile 2.1-2.5.

In den Figuren 6a bis 6d werden vier weitere AusfĆ¼hrungsformen von LED-Rohrleuchten 21, 31, 41, 51 gezeigt, welche jeweils ein in einem Ummantelungsrohr 23, 33, 43, 53 angeordnetes KĆ¼hlkƶrper-Profil 22, 32, 42, 52 enthalten.In the FIGS. 6a to 6d four further embodiments of LED tube lights 21, 31, 41, 51 are shown, each of which in a sheath tube 23, 33, 43, 53 arranged heat sink profile 22, 32, 42, 52 included.

Das KĆ¼hlkƶrper-Profil 22, 32 der beiden AusfĆ¼hrungsformen nach Figur 6a und 6b weist einen becher-fƶrmigen Profil-Einschnitt auf. Zwischen den beiden Flanken des becher-fƶrmigen Profil-Einschnitt erstreckt sich ein ungestĆ¼tzter Kreisbogenabschnitt des Ummantelungsrohrs 23, 33.The heat sink profile 22, 32 of the two embodiments according to FIGS. 6a and 6b has a cup-shaped profile incision. Between the two flanks of the cup-shaped profile incision extends an unsupported circular arc portion of the sheath tube 23, 33rd

GemƤss der AusfĆ¼hrungsform nach Figur 6a enthƤlt der becher-fƶrmige Profil-Einschnitt eine ebene BasisflƤche, auf welcher ein LED-Band 25 angeordnet ist.According to the embodiment according to FIG. 6a the cup-shaped profile incision contains a flat base surface on which an LED strip 25 is arranged.

GemƤss der AusfĆ¼hrungsform nach Figur 6b ist sowohl in der Basis als auch in den seitlichen Flanken des becher-fƶrmigen Profil-Einschnittes jeweils eine nutartige Vertiefung ausgebildet. In den nutartigen Vertiefungen ist jeweils ein LED-Band 35 angeordnet. Die beiden seitlichen LED-BƤnder 35 weisen gegenĆ¼ber dem an der Basis angeordneten LED-Band jeweils eine Neigung auf.According to the embodiment according to FIG. 6b In each case a groove-like depression is formed both in the base and in the lateral flanks of the cup-shaped profile incision. In the groove-like recesses, an LED strip 35 is arranged in each case. The two lateral LED strips 35 each have an inclination relative to the LED strip arranged on the base.

GemƤss der AusfĆ¼hrungsform nach Figur 6c liegt das KĆ¼hlkƶrper-Profil 42 in Form einer Rundstange vor. Das KĆ¼hlkƶrper-Profil 42 weist eine nutfƶrmige Vertiefung auf, welche ein LED-Band 45 aufnimmt.According to the embodiment according to FIG. 6c is the heat sink profile 42 in the form of a round rod. The heat sink profile 42 has a groove-shaped recess which receives an LED strip 45.

GemƤss der AusfĆ¼hrungsform nach Figur 6d liegt das KĆ¼hlkƶrper-Profil 52 im Gegensatz zu Figur 6c als Rundrohr vor. Das KĆ¼hlkƶrper-Profil 52 weist ebenfalls eine nutfƶrmige Vertiefung auf, welche ein LED-Band 55 aufnimmt.According to the embodiment according to FIG. 6d is the heat sink profile 52 in contrast to FIG. 6c as a round tube. The heat sink profile 52 also has a groove-shaped depression which receives an LED strip 55.

Die AusfĆ¼hrungsformen nach Figur 6a bis 6c haben im Ć¼brigen gemeinsam, dass diese eine Leuchtenhalterung 24, 34, 44 umfassen. Das Ummantelungsrohr 23, 33, 43 bildet im Bereich der Leuchtenhalterung 24, 34, 44 eine Ɩffnung 26, 36, 46 aus. Das KĆ¼hlkƶrper-Profil 22, 32, 42 ist im Bereich der Ɩffnung 26, 36, 46 mit der Leuchtenhalterung 24, 34, 44 verbunden, insbesondere flƤchig verbunden. Auf diese Weise wird eine zusƤtzliche, effektive WƤrmeabfuhr Ć¼ber die Leuchtenhalterung 24, 34, 44 erzielt.The embodiments according to Figure 6a to 6c Incidentally, they have in common that they include a light fixture 24, 34, 44. The jacket tube 23, 33, 43 forms an opening 26, 36, 46 in the region of the lamp holder 24, 34, 44. The heat sink profile 22, 32, 42 is in the region of the opening 26, 36, 46 connected to the lamp holder 24, 34, 44, in particular connected flat. In this way, an additional, effective heat dissipation via the lamp holder 24, 34, 44 is achieved.

Die AusfĆ¼hrungsform nach Figur 7a und 7b zeichnet sich durch ein in einem Ummantelungsrohr 73 gehaltenen KĆ¼hlkƶrper-Profil 72 aus, welches entlang seines Querschnittsaussenumfanges drei nutfƶrmige Vertiefungen ausbildet, welche jeweils ein radial nach aussen gerichtetes LED-Band 75 aufnehmen. Die LED-BƤnder 75 verlaufen in ProfillƤngsrichtung L parallel zueinander.The embodiment according to FIGS. 7a and 7b Characterized by a held in a sheath tube 73 heat sink profile 72, which forms along its cross-sectional outer circumference three groove-shaped recesses, each receiving a radially outwardly directed LED strip 75. The LED strips 75 extend in the profile longitudinal direction L parallel to each other.

Die AusfĆ¼hrungsformen nach Figur 8 bis 11 zeigen Abwandlungen der AusfĆ¼hrungsform nach Figur 7a, 7b, gemƤss welchen sich die LED-Leuchte 81, 91, 101, 111 durch die unterschiedliche Anzahl der nutfƶrmigen Vertiefungen im Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils 82, 92, 102, 112 und der darin angeordneten LED-BƤndern 85, 95, 105, 115 unterscheiden.The embodiments according to FIGS. 8 to 11 show modifications of the embodiment according to Figure 7a, 7b according to which the LED lamp 81, 91, 101, 111 differ by the different number of groove-shaped depressions in the cross-sectional outer circumference of the heat sink profile 82, 92, 102, 112 and the LED strips 85, 95, 105, 115 arranged therein ,

So weist die AusfĆ¼hrungsform nach Figur 8 zwei nutfƶrmige Vertiefungen bzw. LED-BƤnder 85, nach Figur 9 vier nutfƶrmige Vertiefungen bzw. LED-BƤnder 95, nach Figur 10 fĆ¼nf nutfƶrmige Vertiefungen bzw. LED-BƤnder 105 und nach Figur 11 acht nutfƶrmige Vertiefungen bzw. LED-BƤnder 115 auf.Thus, the embodiment detects FIG. 8 two groove-shaped recesses or LED strips 85, after FIG. 9 four groove-shaped depressions or LED strips 95, after FIG. 10 five groove-shaped recesses or LED strips 105 and after FIG. 11 eight groove-shaped depressions or LED strips 115 on.

GemƤss der AusfĆ¼hrungsform nach Figur 11 sind entsprechend vollumfƤnglich und in regelmƤssigen AbstƤnden zueinander nutfƶrmige Vertiefungen bzw. LED-BƤnder 115 am KĆ¼hlkƶrper-Profil 112 angeordnet.According to the embodiment according to FIG. 11 are correspondingly full and at regular intervals groove-shaped depressions or LED strips 115 on the heat sink profile 112 arranged.

Claims (15)

Wasserdichte LED-Leuchte (1) zu Beleuchtungszwecken, enthaltend ein KĆ¼hlkƶrper-Profil (2.1) aus Metall mit mindestens einem darauf angeordneten LED-Band (10) mit einer Mehrzahl von LED-Einheiten (15), wobei das KĆ¼hlkƶrper-Profil (2.1) mit dem mindestens einen LED-Band (10) in einem lichtdurchlƤssigen Ummantelungsrohr (3) gekapselt ist, wobei das mindestens eine LED-Band (10) zu einem zwischen Ummantelungsrohr (3) und KĆ¼hlkƶrper-Profil (2.1) ausgebildeten Leuchtenhohlraum (8) hin gerichtet ist, derart dass die LED-Einheiten (15) Licht durch den Leuchtenhohlraum (8) zum Ummantelungsrohr (3) und durch das Ummantelungsrohr (3) hindurch nach aussen abstrahlen kƶnnen,
dadurch gekennzeichnet, dass
der Querschnittsinnenumfang des Ummantelungsrohrs (3) und der Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils (2.1) jeweils mindestens einen Kontaktbogenabschnitt (11) ausbilden, und das Ummantelungsrohr (3) und das KĆ¼hlkƶrper-Profil (2.1) im Bereich der Kontaktbogenabschnitte (11) einander anliegen.A waterproof LED luminaire (1) for illumination purposes, comprising a metal heat sink profile (2.1) with at least one LED strip (10) arranged thereon with a plurality of LED units (15), wherein the heat sink profile (2.1) with the at least one LED strip (10) is encapsulated in a translucent casing tube (3), wherein the at least one LED strip (10) to a between casing tube (3) and heat sink profile (2.1) formed lamp cavity (8) out is directed such that the LED units (15) can emit light through the lamp cavity (8) to the sheath tube (3) and through the sheath tube (3) outwards,
characterized in that
the cross-sectional inner circumference of the sheathing tube (3) and the cross-sectional outer circumference of the heat sink profile (2.1) each form at least one contact arc section (11), and the sheathing tube (3) and the heat sink profile (2.1) abut each other in the region of the contact arc sections (11). LED-Leuchte nach Anspruch 1, dadurch gekennzeichnet, dass das Ummantelungsrohr (3) und das KĆ¼hlkƶrper-Profil (2.1) derart ausgebildet sind, dass das Ummantelungsrohr (3) mit mindestens 40% seines Querschnittsinnenumfanges dem Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils (2.1) anliegt.LED luminaire according to claim 1, characterized in that the sheath tube (3) and the heat sink profile (2.1) are formed such that the sheath tube (3) with at least 40% of its cross-sectional inner circumference the cross-sectional outer circumference of the heat sink profile (2.1) , LED-Leuchte nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Ummantelungsrohr (3) mit mindestens der HƤlfte seines Quersclmittsinnenumfanges dem Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils (2.1) anliegt.LED lamp according to claim 1 or 2, characterized in that the sheathing tube (3) with at least half of its Quersclmittsinnenumfanges the cross-sectional outer circumference of the heat sink profile (2.1) is present. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 3, dadurch gekennzeichnet, dass das KĆ¼hlkƶrper-Profil (2.1) mindestens eine nutfƶrmige Vertiefung (6) ausbildet, in welcher das mindestens eine LED-Band (10) angeordnet ist.LED luminaire according to one of claims 1 to 3, characterized in that the heat sink profile (2.1) at least one groove-shaped recess (6) is formed, in which the at least one LED strip (10) is arranged. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 4, dadurch gekennzeichnet, dass das KĆ¼hlkƶrper-Profil (2.1) mehrere nutfƶrmige Vertiefungen (6) ausbildet, in welchen jeweils mindestens ein LED-Band (10) angeordnet ist.LED luminaire according to one of claims 1 to 4, characterized in that the heat sink profile (2.1) a plurality of groove-shaped recesses (6) is formed, in each of which at least one LED strip (10) is arranged. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 5, dadurch gekennzeichnet, dass die mindestens eine nutfƶrmige Vertiefung (6) so ausgelegt ist, dass die Bauteile des mindestens einen LED-Bandes (10) zum Ummantelungsrohr (3) hin nicht Ć¼ber die nutfƶrmige Vertiefung (6) hinausragen.LED lamp according to one of claims 1 to 5, characterized in that the at least one groove-shaped recess (6) is designed so that the components of the at least one LED strip (10) to the jacket tube (3) out not on the groove-shaped recess (6) protrude. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 6, dadurch gekennzeichnet, dass der Querschnittsinnenumfang des Ummantelungsrohrs (3) kreisfƶrmig ist und der Querschnittsaussenumfang des KĆ¼hlkƶrper-Profils (2.1) mindestens einen Kreisbogenabschnitt (11) ausbildet, und das KĆ¼hlkƶrper-Profil (2.1) mit seinem mindestens einen Kreisbogenabschnitt (11) dem Ummantelungsrohr (3) anliegt.LED luminaire according to one of claims 1 to 6, characterized in that the cross-sectional inner circumference of the sheath tube (3) is circular and the cross-sectional outer circumference of the heat sink profile (2.1) at least forms a circular arc section (11), and the heat sink profile (2.1) with its at least one circular arc portion (11) abuts the sheath tube (3). LED-Leuchte nach Anspruch 7, dadurch gekennzeichnet, dass der mindestens eine Kreisbogenabschnitt (11) einen Winkel (Zentriwinkel) von 200Ā° oder grƶsser, insbesondere von 220Ā° oder grƶsser, und bevorzugt von 240Ā° oder grƶsser einschliesst.LED luminaire according to claim 7, characterized in that the at least one circular arc section (11) encloses an angle (central angle) of 200 Ā° or greater, in particular of 220 Ā° or greater, and preferably of 240 Ā° or greater. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 8, dadurch gekennzeichnet, dass das KĆ¼hlkƶrper-Profil (2.1) zwei, die mindestens eine nutfƶrmige Vertiefung (6) begrenzende Profilflanken (9a, 9b) enthƤlt, welchen das Ummantelungsrohr (3) anliegt.LED luminaire according to one of claims 1 to 8, characterized in that the heat sink profile (2.1) two, the at least one groove-shaped recess (6) delimiting profile edges (9a, 9b), which bears the sheathing tube (3). LED-Leuchte nach einem der AnsprĆ¼che 1 bis 9, dadurch gekennzeichnet, dass das Ummantelungsrohr (3) aus einem Fluorpolymer, insbesondere aus einem Fluorisierten Elastomer, aus einem Perfluoralkoxy-Copolymer (PFA) oder Ethylen/Tetrafluorethylen-Copolymer (ETFE) besteht.LED luminaire according to one of claims 1 to 9, characterized in that the sheathing tube (3) consists of a fluoropolymer, in particular of a fluorinated elastomer, of a perfluoroalkoxy copolymer (PFA) or ethylene / tetrafluoroethylene copolymer (ETFE). LED-Leuchte nach einem der AnsprĆ¼che 1 bis 10, dadurch gekennzeichnet, dass das Ummantelungsrohr (3) eine WandstƤrke von 0.1 bis 2 mm, insbesondere von 0.2 bis 1 mm aufweist.LED light according to one of claims 1 to 10, characterized in that the sheathing tube (3) has a wall thickness of 0.1 to 2 mm, in particular from 0.2 to 1 mm. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 11, dadurch gekennzeichnet, dass das Ummantelungsrohr (3) mindestens einen den Leuchtenhohlraum (8) begrenzenden, ungestĆ¼tzten Querschnittsumfangsabschnitt (13) aufweist.LED luminaire according to one of claims 1 to 11, characterized in that the sheathing tube (3) has at least one light cavity (8) bounding, unsupported cross-sectional peripheral portion (13). LED-Leuchte nach Anspruch 12, dadurch gekennzeichnet, dass der ungestĆ¼tzte Querschnittsumfangsabschnitt (13) einen Kreisbogen ausbildet, welcher insbesondere einen Winkel (Zentriwinkel) von 120Ā° oder kleiner einschliesst.LED lamp according to claim 12, characterized in that the unsupported cross-sectional peripheral portion (13) forms a circular arc, which in particular includes an angle (center angle) of 120 Ā° or smaller. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 13, dadurch gekennzeichnet, dass das KĆ¼hlkƶrper-Profil (2.1) wenigstens eine weitere Ausnehmung (18) enthƤlt, in welcher eine Sensoreinheit (16) angeordnet ist.LED light according to one of claims 1 to 13, characterized in that the heat sink profile (2.1) at least one further recess (18), in which a sensor unit (16) is arranged. LED-Leuchte nach einem der AnsprĆ¼che 1 bis 14, dadurch gekennzeichnet, dass das Ummantelungsrohr (23, 33,43) entlang seines Querschnittsumfanges unterbrochen ist und eine Ɩffnung (26, 36, 46) aufweist und das KĆ¼hlkƶrper-Profil (22, 32, 42) Ć¼ber die Ɩffnung (26, 36, 46) mit einer Leuchtenhalterung (24, 34, 44) einen wƤrmeleitenden Kontakt ausbildet.LED luminaire according to one of claims 1 to 14, characterized in that the sheathing tube (23, 33, 43) is interrupted along its cross-sectional circumference and has an opening (26, 36, 46) and the heat sink profile (22, 32, 42) forms a heat-conducting contact via the opening (26, 36, 46) with a lamp holder (24, 34, 44).
EP16182911.4A 2015-08-11 2016-08-05 Waterproof led light Active EP3130846B1 (en)

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