EP2171350B1 - Lampe à diode électroluminescente (led) - Google Patents

Lampe à diode électroluminescente (led) Download PDF

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Publication number
EP2171350B1
EP2171350B1 EP08773700.3A EP08773700A EP2171350B1 EP 2171350 B1 EP2171350 B1 EP 2171350B1 EP 08773700 A EP08773700 A EP 08773700A EP 2171350 B1 EP2171350 B1 EP 2171350B1
Authority
EP
European Patent Office
Prior art keywords
light
reflector
light source
unit
lamp
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.)
Not-in-force
Application number
EP08773700.3A
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German (de)
English (en)
Other versions
EP2171350A1 (fr
Inventor
Harald Hofmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Osram SBT GmbH
Original Assignee
Siteco Beleuchtungstechnik GmbH
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Filing date
Publication date
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Publication of EP2171350A1 publication Critical patent/EP2171350A1/fr
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    • 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
    • F21V5/00—Refractors for light sources
    • F21V5/02—Refractors for light sources of prismatic shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/68—Details of reflectors forming part of the light source
    • 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
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/02—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using parallel laminae or strips, e.g. of Venetian-blind type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/51—Cooling arrangements using condensation or evaporation of a fluid, e.g. heat pipes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F21V29/76—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
    • F21V29/763—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section the planes containing the fins or blades having the direction of the light emitting axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/83—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks the elements having apertures, ducts or channels, e.g. heat radiation holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/005—Reflectors for light sources with an elongated shape to cooperate with linear light sources
    • 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
    • F21V15/00—Protecting lighting devices from damage
    • F21V15/01—Housings, e.g. material or assembling of housing parts
    • F21V15/015—Devices for covering joints between adjacent lighting devices; End coverings
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • F21V17/101—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening permanently, e.g. welding, gluing or riveting
    • 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
    • F21V21/00—Supporting, suspending, or attaching arrangements for lighting devices; Hand grips
    • F21V21/02—Wall, ceiling, or floor bases; Fixing pendants or arms to the bases
    • 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
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/06—Arrangement of electric circuit elements in or on lighting devices the elements being coupling devices, e.g. connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/06—Optical design with parabolic curvature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/08—Optical design with elliptical curvature
    • 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
    • F21Y2105/00—Planar 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
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a lamp unit and a lighting system with a receptacle for the replaceable attachment of a lamp unit.
  • a lamp or lamp unit is understood to mean a product in which an electrical light source is connected to further electrical, optical and mechanical elements to form an inseparable unit. Such a lamp is always intended only as a whole for removable recording on a lamp.
  • an LED lamp described with a base for connection to a lamp and a curved rotationally symmetrical reflector, in the focal point for generating a directed light distribution, an LED source is arranged.
  • the reflector opening forms a light exit plane of the lamp.
  • the LED light source is arranged in the light exit plane.
  • the light exit plane is closed by a transparent termination.
  • a cooling block is arranged on the side facing away from the reflector of the LED light source and extends in the main emission direction, so that it protrudes from the light exit plane.
  • a reflector is formed by a housing having an inner reflective surface.
  • the exit region of the reflector is closed by a transparent disc, wherein the disc and the housing are fastened by a clip connection.
  • a mounting strip for LED modules is formed in the middle of the pane, which is plugged in and electrically contacted there. The LED modules are arranged in a row in the longitudinal direction of the signal light and aligned in the direction of the reflector.
  • US 2006/157724 A1 discloses a lamp unit according to the preamble of claim 1.
  • a linear light source unit which differs from punctiform light sources, such as.
  • punctiform light sources such as.
  • WO2005 / 085706 differs in that the light emission is distributed over a linear range.
  • Such a linear light source unit with at least one LED light source can on the one hand be formed by a single LED element (eg LED chip) of linear shape, for example by an elongate OLED, but preferably a plurality of LED light sources are arranged in a row , When referred to hereinafter as a "longitudinal direction", this refers to the longitudinal direction of the linear light source unit.
  • the light source unit is arranged at a distance in front of the reflector wall of a reflector so that it emits light, preferably the entire light flux in the direction of the reflector wall, from where the light is reflected to the light exit area. It is in contrast to conventional arrangements of light sources and reflectors, as they are, for example, commercially available as halogen reflector lamps, arranged in the light exit region.
  • the main beam direction of the light source unit is thus preferably opposite to the main beam direction of the lamp unit.
  • the reflector wall is preferably closed, d. H. in particular in the middle region, to which the main radiation direction of the LED light source unit is directed, without interruption. In this way, the most comprehensive possible reflection and thus efficient utilization of the generated light can be achieved.
  • the light intensity distribution of a lamp unit according to the invention in contrast to known rotationally symmetrical lamps, preferably substantially 2-axis symmetrical (ie both the longitudinal and the transverse axis) and can thus be used for a variety of lighting purposes, for example. Flooding, grazing light illumination etc. in areas such as facades, walls, floors, etc.
  • the reflector is preferably cylindrical, d. H. formed with in the longitudinal direction substantially the same cross-section. Most preferably, it has substantially the shape of a longitudinally halved hollow cylinder with a preferably symmetrical cross-sectional shape.
  • the shape of the reflector surface is selected to achieve optical properties, for example as a parabola, ellipse, etc. In this case, the parabolic focal point or one of the ellipse focal points is preferably arranged at the location of the light source unit.
  • the reflector wall is preferably curved, particularly preferably with constant curvature. Alternatively, however, it can also have, for example, prismatic shapes and other structures.
  • the exit area of the reflector is the area from which the light of the lamp unit exits.
  • the region is substantially planar, for example, as formed between parallel longitudinal edges of the reflector plane.
  • the exit region is preferably rectangular, more preferably oblong, d. H. its extension in the longitudinal direction is greater, preferably substantially larger (for example more than 2 times, or even more than 5 times) than the extension in the transverse direction.
  • a termination is provided, so that a closed reflector space is formed.
  • the termination is transmissive to the passage of light and may, for example, be transparent or translucent.
  • the termination of the reflector space is preferably complete, so that the lamp as a whole is dust-tight and particularly preferably even sealed airtight.
  • a gas filling for example. Be provided with positive or negative pressure in the interior of the reflector space, if this is advantageous for the operation of the LED light source unit (eg. For cooling, electrical insulation, etc.).
  • the lamp is not removable as a lamp unit and has no interior parts to be changed.
  • the reflector, the termination and the light source unit are permanently connected to each other.
  • the lamp unit is for interchangeable use in a luminaire in which it is always used as a complete unit and replaced as needed.
  • the LED light source unit may have a common carrier for a number of linear, ie. H. have LED light sources arranged one behind the other in the longitudinal direction. Preferably, all LED light sources are arranged on a common carrier.
  • the carrier preferably also includes electrical conductors for the electrical supply of the light sources. More preferably, it can have electrical components for the electrical supply and control of the LED light sources.
  • the carrier may be formed as a board, wherein preferably a board material is to be selected, which has a good thermal conductivity for efficient heat distribution.
  • an electrical connection for the electrical supply of the LED light sources is provided on the outside of the lamp unit.
  • the connection is preferably detachable, d. H. when installing the lamp in a lamp unit, the electrical connection can be easily made and easily removed when removing.
  • the electrical connection is provided as a plug connection, terminal connection or screw connection.
  • Particularly preferred is an arrangement of the terminal on an end face of the reflector, d. H. at one of the ends of the lamp.
  • a passage for the electrical contacting of the LED light source unit arranged in the interior is preferably provided on the front side.
  • the mechanical connection and the electrical connection can be formed by a common element, as is known, for example, from the screw base of conventional incandescent lamps or plug-in sockets of commercially available halogen lamps.
  • the mechanical termination preferably comprises a projecting connection tongue which, for example, may have a hole suitable for a screw connection, clamping connection or latching connection.
  • Particularly preferred electrical and mechanical connection are provided on at least one end face of the reflector.
  • a closure plate with a be provided mechanical connection and an electrical connection.
  • the end plate is preferably also permanently connected to the rest of the lamp unit. It can be provided that in each case a mechanical connection, for example.
  • a connection tongue is provided at both ends of the reflector, but only on one side of an electrical connection.
  • slats are provided for influencing the light distribution in the longitudinal plane, which are arranged transversely to the longitudinal direction of the light source unit.
  • the lamellae can be designed as simple, flat lamellae or else as more complex curved shapes.
  • the lamellae can parallel to each other, for example.
  • d. H. be arranged behind the conclusion.
  • they may be on the outside of the unit, i. H. be integrated before the conclusion.
  • an integration of lamellar, opaque or reflective separations in the termination is possible.
  • the lamellae on the light source unit. If the light source unit comprises a plurality of light sources, the lamellae can be arranged between them. In this way, an alignment of the radiation is already possible at the place of light generation. It is particularly preferred here that the lamellae arranged between the light sources are formed with a reflective surface. Thus, a determination of the light exit angle in the longitudinal planes can still be achieved with high efficiency and at the same time optimum utilization of the light generated by the light source unit.
  • a flat, transmitting optical element with a structured, ie not completely planar surface for deflecting the light reflecting from the reflector can be provided.
  • the light distribution in the transverse plane is preferably influenced in addition to the distribution achieved by the reflector contour.
  • the optical element can in this case, for example, the Increase radiation angle of the light.
  • the lamp termination directly forms the optical element, ie no separate optical element is provided, but the termination is formed by the optical element, or the transmitting termination has a desired optical function. It is possible to form the optical element as a linear profile, so that the element, for example. Has a constant in the longitudinal direction of the cross section.
  • the element may be provided with a prismatic structure for obtaining a broadened emission.
  • the reflector is shaped so that the light of the light source unit is focused in a focal point at a distance in front of the light exit area.
  • a bundling can be achieved by a reflector with elliptical contour, in which the light source unit is arranged in the first focal point, so that the light is focused in the second focal point at a distance in front of the light exit area.
  • the light distribution achieved in this way is particularly interesting for a large number of possible uses, since in the second focal axis the entire luminous flux of the lamp is concentrated in a linear region. If, for example, a narrow slot is arranged in this focal plane, the lamp radiates essentially all the light through this narrow slot.
  • the lamp is not visible from the opposite side, which allows extremely interesting applications in lighting.
  • this provides the advantage that the light of the lamp is provided in the focal plane, but due to the distance, the heat generated by electrical power loss in the light generation is not effective there.
  • a heat sink is preferably provided on the LED element.
  • a heat sink consists, for example, of a good heat-conducting material, for example. Metal, preferably aluminum.
  • the surface of the heat sink is preferably enlarged, for example by lamellae and / or structured surface.
  • the heat sink expedient, as well as the LED light source unit, elongated shape. He is with the best possible heat transfer as close as possible to attach directly to the LED light source elements or to their support.
  • the heat sink protrudes from the lamp unit to to allow effective release of heat into the environment.
  • the heat sink projects from the exit area, preferably in the direction of the light emission. If the heat sink in this case of substantially the same width as the carrier of the light source unit, this results in no additional shading.
  • the heat sink can be accessible from the outside, for example. Be designed as a handle. Preferably, it has a profile shape over the length of the same cross-section.
  • a cooling medium can be provided.
  • the heat sink may have a cavity for receiving the cooling medium.
  • the cooling medium is preferably fluid, d. H. liquid or gaseous.
  • the cavity within the heat sink can be completed, whereby a heat transfer on the heat pipe principle by evaporation of the cooling medium hottest and precipitation is achieved at the coldest point.
  • the cavity can also be flowed through.
  • the heat sink may have at least one of the end faces a connection for the cooling medium.
  • the terminal When installed in a corresponding lamp, the terminal can be coupled to a feeding device of the lamp, so that an effective cooling is made possible in particular by flowing through the heat sink in the longitudinal direction.
  • the attachment of the heat sink is preferably carried out in the outlet region at the conclusion.
  • the conclusion leaves free a longitudinally extending gap in which the designed as a profile heat sink is arranged.
  • the light source unit at the exit region with the main radiation direction in the direction of the reflector for example, in a parabolic or ellipsoidal reflector whose surface is substantially perpendicular to the main emission of the LED light source element in the central region, to a certain shade of light emission.
  • This shading can be minimized so that it is acceptable for many applications with a suitable (namely relatively broad) radiation of the LED light source element and a suitable narrow shape thereof.
  • the reflector surface in the region directly opposite to the light source unit has a shape with a central elevation, so that light incident from the light source unit is reflected in a direction past the light source unit.
  • a described lamp unit is preferably of a handy size, so that it can easily be manually inserted into corresponding lighting units. Further preferred are sizes such as are common for conventional lamps of conventional type.
  • the outlet region may have a length of 5-150 cm, preferably 10-60 cm.
  • the exit area may also have a width of 2.5-20 cm, preferably about 5-10 cm.
  • a lamp unit can be used as described above.
  • a corresponding lamp comprises a housing and an electrical connection and a receptacle for the replaceable attachment of the lamp unit.
  • the recording allows a mechanical fixation and electrical contacting of the lamp unit.
  • a corresponding mechanical connection is connected to a suitable terminal of the lamp unit.
  • a corresponding electrical contact is connected to the contact terminal of the lamp unit.
  • a corresponding lamp is provided in contrast to the pure lamp unit to the fact that the actual light-generating element - namely the lamp unit - is interchangeable.
  • the lamp additional components, such as, electrical supply and control devices, u. a. for connection to a mains voltage. Next switching elements, dimmers, etc. may be provided on the lamp.
  • an ellipse-shaped reflector lamp described above is used.
  • the lamp has a slot-shaped light exit area on, which lies in the second focal axis of the lamp.
  • the housing of the lamp almost completely - namely except for the slit-shaped, preferably particularly narrow light exit area - be closed, yet the full luminous flux can be radiated to the outside.
  • a lamp 10 is shown.
  • the lamp has a cylindrical reflector 12 made of glass, which is closed at both end sides by end plates 12.
  • the reflector may also be made of other materials, for example plastic or metal.
  • the reflector 12 has a symmetrical cross-section, with the curved side towards the back of the lamp is aligned.
  • the shape of the curvature as explained below, for example, be parabolic or elliptical.
  • the figures show the reflector shape in this regard only schematically.
  • a rectangular light exit region 16 is formed between its longitudinal edges, which is closed by a transparent glass pane 18.
  • the termination 18 may be formed by another material, such as plastic, as long as it is light transmissive.
  • the heat sink 20 protrudes at the light exit region 16 in the light exit direction. It is designed as a profile body with several parallel slats made of good heat conducting material, aluminum in the example shown.
  • the lamp 10 is designed as a linear lamp with an elongate light exit area.
  • the width of the light exit area is about 5 cm.
  • the length is relatively short in the example shown for illustrative reasons. For such lamps lengths of 10, 30, 60 and 100 cm (light exit area) are sought.
  • the reflector 12 has on the inner side a highly reflective reflector surface 13.
  • a LED light source unit 30 is mounted directly on the heat sink 20 in a slot 21 of the lens 18.
  • the light source unit 30 is formed as a printed circuit board 26 with high power LEDs 24 mounted thereon. On the circuit board 26 traces for electrical connection of the LEDs 24 are provided.
  • the electrical supply takes place from a front end of the lamp 10 ago.
  • a screw terminal block 27 is provided, the electrical contacts with a passage (not shown) provided by the end plate 14 and is connected to the circuit board 26.
  • the end plate 14 has a connection tongue 34 for the mechanical connection of the lamp 10.
  • the terminal tongue 34 is formed as protruding from the end face of the lamp 10 flat metal tab with a fixing hole.
  • the lamp 10 can be accommodated in a lamp 100 changeable by an electrical control and operating device 102 is connected to the terminal block 27 and the terminal tabs 34 are connected at both ends with corresponding receptacles on a lamp housing 104, for example.
  • the lamp 10 is mechanically attached to the lamp 100 and electrically contacted, so that from the control and operating device 102, which is connected to a mains voltage supply, a suitable for the operation of the lamp 10 voltage is supplied and the lamp 10 to this Way can be controlled.
  • Fig. 9a, 9b is a second and in Fig. 10a, 10b a third embodiment of a closure plate shown.
  • the connection tongue 34 is also formed horizontally in the longitudinal direction of the lamp, but at the back of the reflector.
  • the terminal tongue 34 is perpendicular, provided parallel to the end plate.
  • the LED 24 emits light on the reflector 12.
  • the entire luminous flux is reflected by the reflector wall 13.
  • the reflector wall 13 the light is reflected in the main emission of the lamp 10, ie in the opposite direction of the radiation of the LED 24.
  • the very close to the apex of the reflector incident luminous flux is reflected back to the LED 24 and its board 26 so that it in this Area comes to a certain shade. Due to the narrow shape of the board 26, the overall shading effect remains relatively low. Later will be part of Fig. 20a, 20b discussed a way how the shading is further reduced.
  • the variant shown is the reflector wall 13 of parabolic shape.
  • the LED 24 is arranged in the focal point, so that light emitted there is reflected substantially in parallel and through the lens 18 in essentially passes through in parallel.
  • the result is like in Fig. 11b shown in the A-plane a very narrow light distribution curve with maximum light intensity.
  • the shape of the reflector surface 13 is an ellipse shape having two focal plane F1 and F2.
  • the LED elements 24 are arranged in the upper focal plane F1.
  • the light emitted from there is focused in the second focal plane F2 arranged at a distance in front of the light exit region 16.
  • a slot-shaped opening 36 may, for example, be provided on a luminaire, so that the luminaire is almost completely closed except for the slot 36.
  • a lamp according to the partial view in Fig. 13 is provided for controlling or fixing the light emission angle in the lamp longitudinal direction (B-plane) that at the outlet region 16 of the reflector 12 fins 40 are arranged.
  • the lamellae 40 are formed in the example shown as a flat diaphragm, which are arranged parallel to the emission direction of the reflector 12. They have a certain height in the light emission direction, with which the beam angle is defined in the longitudinal direction.
  • Fig. 14-16 are arranged on the board 26 between the individual LED elements 24 blades 42. These lamellae serve to limit the width of the light distribution in the longitudinal direction. Depending on the height, the distribution can be set as narrow as desired.
  • the fins 42 may be opaque. Particularly preferred is a reflective surface of the fins 42, in particular in conjunction with a curved cross-sectional shape of the fins 42 as in Fig. 16 shown. Since the fins 42 are arranged between the LED elements 24, despite the associated limitation of the width of the radiation, an almost complete utilization of the emitted light can be achieved.
  • the radiation characteristic of a lamp as described above can - in addition to the described variation of the shape of the reflector 12 - also influenced by the arrangement of corresponding optical elements in the light exit plane 16.
  • transmitting optical elements can be introduced in order to achieve a desired light distribution - bundling, widening, scattering, etc.
  • the optical elements may be provided as a separate unit, but more preferably they are provided in the lamp termination 18 itself.
  • the surface of the lens 18 according to a first embodiment ( Fig. 17a, 17b ) have a structure with round elevations. As the light distribution curve shows, this makes the broadcast wider than with the mere use of a parabolic reflector.
  • a further optical effect can be achieved by the use of a prism structure according to the second embodiment ( Fig. 18a, 18b ) be achieved.
  • the prismatic structure of the lens 18 leads to a deflection of the vertically incident rays on both sides, so that the in Fig. 18b shown relatively wide light distribution curve arises.
  • the lens 18 diffuse the light also diffusely, so that a diffuse light distribution curve ( Fig. 19b ) arises.
  • Fig. 20a, 20b a possible measure is described with which a shadowing of the light reflected by the reflector 12 on the board 26 can be reduced.
  • the area of the reflector surface 13, which is decisive for such a shadowed reflection, is the middle region 15.
  • the reflector surface 13, which in the remaining region is parabolic in shape, as described above, for example, is parabolic. procured differently at this point.
  • an involute shape is formed with a central tip 19.
  • FIG Fig. 21a, 21b an alternative in which the reflector 12 only has a cross-sectional area which substantially corresponds to the halving of a symmetrical reflector shape (of course, depending on the desired properties, for example. With parabolic or even fingerlambaigem course of the reflector surface 13). Laterally, the completed reflector space is completed by a flat mirror surface 46. As Fig. 21b shows, the corresponding light intensity distribution is unbalanced. The entire luminous flux of the LED light source passes through an approximately half the size of the lamp termination as in the previously described embodiments.

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

Claims (15)

  1. Unité de lampe, avec
    - un réflecteur (12) avec une paroi de réflecteur,
    - et une unité de source de lumière (30) de forme linéaire avec au moins une source de lumière à LED (24) qui est disposée dans la zone de sortie (16) à distance devant la paroi de réflecteur de telle sorte qu'elle émet de la lumière en direction de la paroi de réflecteur,
    - la zone de sortie (16) étant fermée par une terminaison (18) de transmission de telle sorte qu'un espace de réflecteur fermé est formé,
    - le réflecteur (12), la terminaison (18) et l'unité de source de lumière (26) sont raccordés les uns aux autres de façon non détachable,
    - et un corps de refroidissement (20) étant prévu sur l'unité de source de lumière (30), lequel corps dépasse de la zone de sortie (16),
    - caractérisée en ce que, à l'extérieur sur l'unité (10), sur un côté frontal du réflecteur (12), il est prévu une connexion (27) électrique détachable en tant que connexion à fiche, connexion à borne ou connexion à vis pour l'acheminement d'une puissance électrique vers l'unité de source de lumière (30), et
    - la bordure de la paroi de réflecteur fixe en position la zone de sortie.
  2. Unité selon la revendication 1, dans laquelle
    - l'unité de source de lumière (30) présente une pluralité de sources de lumière à LED (24),
    - les sources de lumière à LED (24) étant disposées les unes derrière les autres dans la direction longitudinale sur un support (26) commun avec des conducteurs destinés à l'alimentation électrique.
  3. Unité selon l'une des revendications précédentes, dans laquelle
    - un raccordement (34) mécanique détachable de l'unité (10) est prévu pour être mis en place sur un luminaire (100),
    - le raccordement mécanique comprenant une languette de terminaison (34) en saillie,
    - et une plaque de terminaison (14) avec le raccordement (34) mécanique et une connexion (26) électrique étant prévue sur au moins un côté frontal du réflecteur (12).
  4. Unité selon l'une des revendications précédentes, dans laquelle
    - un certain nombre de lamelles (40, 42) disposées transversalement à la direction longitudinale de l'unité de source de lumière (30) sont prévues,
    - les lamelles (40) étant disposées sur la zone de sortie (16) .
  5. Unité selon l'une des revendications précédentes, dans laquelle
    - un certain nombre de lamelles (40, 42) disposées transversalement à la direction longitudinale de l'unité de source de lumière (30) sont prévues,
    - les lamelles (42) étant disposées sur l'unité de source de lumière (30) entre les sources de lumière (24).
  6. Unité selon l'une des revendications précédentes, dans laquelle
    - au moins un élément optique transparent plat destiné à dévier la lumière réfléchie par le réflecteur (12) est prévu sur la zone de sortie (16),
    - l'élément (18) optique présentant une surface structurée qui dévie la lumière de telle sorte que l'angle de rayonnement de la lumière est augmenté.
  7. Unité selon la revendication 6, dans laquelle
    - l'élément optique présente une section transversale constante dans la direction longitudinale.
  8. Unité selon l'une des revendications précédentes, dans laquelle
    - la lumière de l'unité de source de lumière (30) est focalisée dans un axe de foyer (F2) à distance de la zone de sortie (16).
  9. Unité selon l'une des revendications précédentes, dans laquelle
    - le corps de refroidissement présente au moins une cavité destinée à recevoir un fluide de refroidissement,
    - et le corps de refroidissement présente sur au moins un côté frontal un raccordement pour le fluide de refroidissement.
  10. Unité selon l'une des revendications précédentes, dans laquelle
    - la terminaison (18) laisse dégagé un interstice (21) s'étendant dans la direction longitudinale dans lequel est disposé le corps de refroidissement (20) constitué en tant que profilé.
  11. Unité selon l'une des revendications précédentes, dans laquelle
    - le réflecteur (12) présente, dans une zone partielle (15), une forme de section transversale avec une élévation (19) centrale de telle sorte que la lumière provenant de l'unité de source de lumière (30) est réfléchie sur la zone partielle dans une direction qui la fait passer devant l'unité de source de lumière (30),
    - la zone partielle (15) présentant une forme de développante.
  12. Unité selon l'une des revendications précédentes, dans laquelle
    - la zone de sortie (16) présente une longueur de 5 - 100 cm, de préférence de 10 - 60 cm, et une largeur de 2,5 - 20 cm, de préférence de 5 - 10 cm.
  13. Système de luminaire, avec
    - un luminaire (100) avec un boîtier et une connexion électrique,
    - et avec un logement dans lequel une unité de lampe (10) selon l'une des revendications précédentes est reçue de façon remplaçable, le logement comprenant un raccordement mécanique qui est raccordé à un raccordement mécanique de l'unité de lampe (34),
    - et un contact électrique qui est raccordé à un contact (26) électrique de l'unité de lampe (10).
  14. Système selon la revendication 13, dans lequel
    - le luminaire (100) présente un appareil de contrôle et/ou de commande (102) électrique destiné à la fourniture d'une tension appropriée pour le fonctionnement de l'unité de source de lumière à LED (30) ou respectivement d'une intensité appropriée sur le contact (26) électrique.
  15. Système selon la revendication 13 ou 14, dans lequel
    - le luminaire (10) présente une zone de sortie de lumière en forme de fente,
    - et la lampe (10) est constituée de telle sorte que la lumière de l'unité de source de lumière (26) est focalisée dans un axe de foyer (F2) à distance de la zone de sortie (16),
    - l'axe de foyer (F2) étant disposé sur la zone de sortie de lumière en forme de fente du luminaire (100).
EP08773700.3A 2007-06-27 2008-06-26 Lampe à diode électroluminescente (led) Not-in-force EP2171350B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007030186A DE102007030186B4 (de) 2007-06-27 2007-06-27 Lineare LED-Lampe und Leuchtensystem mit derselben
PCT/EP2008/005225 WO2009000536A1 (fr) 2007-06-27 2008-06-26 Lampe à diode électroluminescente (led)

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EP2171350A1 EP2171350A1 (fr) 2010-04-07
EP2171350B1 true EP2171350B1 (fr) 2018-08-15

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DE102007030186B4 (de) 2009-04-23
DE112008001660A5 (de) 2010-10-28
WO2009000536A1 (fr) 2008-12-31
EP2171350A1 (fr) 2010-04-07

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