EP2459924A1 - Beleuchtungsvorrichtung mit leuchtdioden - Google Patents
Beleuchtungsvorrichtung mit leuchtdiodenInfo
- Publication number
- EP2459924A1 EP2459924A1 EP10728194A EP10728194A EP2459924A1 EP 2459924 A1 EP2459924 A1 EP 2459924A1 EP 10728194 A EP10728194 A EP 10728194A EP 10728194 A EP10728194 A EP 10728194A EP 2459924 A1 EP2459924 A1 EP 2459924A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- led
- lighting device
- reflector
- tube
- cylindrical lens
- 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
Links
Classifications
-
- 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
- F21K9/69—Details of refractors forming part of the light source
-
- 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 a tubular lighting device with light emitting diodes (LED: light emitting diode).
- LED light emitting diode
- the term LED is to be understood as meaning not only visible light (visible electromagnetic radiation [VIS], white or colored) but also infrared (IR) or ultraviolet (UV) radiation emitting diodes.
- LEDs in elongate lighting devices as a replacement for tubular fluorescent lamps is already known from numerous publications.
- the writings mentioned US 2002/060526 Al and US 2005/225979 Al There, a plurality of LEDs are arranged on an elongate printed circuit board, which in turn are arranged in a transparent tube, which can be inserted into the socket of a conventional tubular fluorescent lamp. Since these LED lamps are designed for general lighting, they are not suitable for special lighting tasks that require a specific illumination intensity distribution.
- the object of the present invention is to provide a tubular lighting device based on luminous To provide diodes (LED), so that a predetermined illuminance distribution is achieved.
- LED luminous To provide diodes
- a lighting device having an at least partially transparent tube and a plurality of light-emitting diodes (LED), wherein the LEDs are arranged inside the tube next to each other and parallel to the tube longitudinal axis, characterized in that within the tube at least one separate optical means is arranged ,
- LEDs light-emitting diodes
- the basic idea of the invention is to provide, in the case of a tubular LED-based lighting device, at least one separate optical means with which a desired illumination intensity distribution, both in the direction of the longitudinal axis of the illumination device and in particular in the planes perpendicular to the longitudinal axis, can be achieved.
- a desired illumination intensity distribution both in the direction of the longitudinal axis of the illumination device and in particular in the planes perpendicular to the longitudinal axis, can be achieved.
- aperture lamps ie tubular lamps, for example fluorescent lamps, which radiate substantially only in a relatively narrow angular range with high light intensity.
- the tube does not necessarily have to be straight but, if advantageous for the intended application, can also be curved.
- separate optical means is to be understood here as one or more optical elements which are not integrated in the housing of an LED.
- the invention should also include such cases, in which the LED used itself already have an integrated into the LED housing optics.
- the term separate optical means also includes, in particular, a cylindrical lens which shapes the light coming from the LED or, in general, the electromagnetic radiation with regard to the desired illumination or irradiance distribution.
- the cylindrical lens may be in one piece, but may also consist of several parts, for example in the case of particularly long illumination devices according to the invention.
- the cylindrical lens is preferably designed as a converging lens. It has proven to be advantageous to form convexly at least the surface of the cylindrical lens facing away from the LED and to adapt the curvature of this surface to the curvature of the inner surface of the tube wall. This makes it possible to arrange the cylindrical lens so that the surface of the cylindrical lens facing away from the LED rests against the inner surface of the tube wall. In this way, the cylindrical lens can be arranged in a particularly space-saving manner within the tube.
- the use of immersion minimizes light losses in the transition between cylindrical lens and tube wall.
- the cross section of the tube is preferably circular.
- the at least one of the optical means comprises a reflector in which the LEDs are arranged.
- the reflector has individual funnel-like recesses for each LED, wherein the respective LED at the narrow end of the associated funnel-like depressions, ie at the reflector base, is arranged.
- the reflector can be one or more parts.
- the reflector is in several parts, with a separate individual reflector element being provided for each LED. In addition to efficient light collection and shaping, this has the advantage that if required, LED reflector modules of different lengths can be realized very flexibly.
- two or more LEDs, including respective reflector elements are arranged side by side on a common elongated support.
- a cylindrical lens in an elongated LED reflector lens module.
- the cylindrical lens is arranged on the openings of the arrayed reflector elements with the LED.
- two or more LED reflector modules or LED reflector lens modules can also be arranged on a common further carrier, which is then arranged in a suitable tube.
- this carrier may consist of individual, interconnected parts. Due to the modular design of the lighting device, the individual components or modules can be relatively easily installed or replaced. Incidentally, the LEDs used in a lighting device according to the invention need not all emit at the same wavelength.
- the application it may also be advantageous to combine radiating LED or VIS / IR / UV emitting LEDs, for example in different light colors.
- the heat transfer between the carrier and glass tube inner wall can be facilitated by suitable measures such as the application of thermal paste.
- the interior of the tube may be completely or partially filled with a liquid to effectively distribute the heat of the LEDs and dissipate over the tube wall.
- the lighting device according to the invention is also suitable for applications in which the medium outside the pipe is not the ambient air or another atmosphere but a liquid.
- the optical parameters such as the focal length of a converging lens, if necessary, be designed accordingly.
- Such an application is, for example, the illumination of solar cells in an electrolyte bath with a predetermined illumination intensity distribution. The aim is to make the solar cell conductive by the incidence of light to allow a flow of current and the application of ions from the electrolyte solution.
- Such a process is already known, see, for example, document EP 0 171 129 A2.
- FIG. 1 a shows a top view of a lighting device according to the invention
- FIG. 1 b shows a cross-sectional view of the lighting device from FIG. 1 a along the section line AB
- FIG. 2a shows a second embodiment of a lighting device according to the invention
- FIG. 2b shows an end view of the lighting device from FIG. 2a
- FIG. 2b shows an end view of the lighting device from FIG. 2a
- FIG. 3 shows an LED reflector module of the illumination device from FIG. 1a, FIG.
- FIG. 1a schematically shows a lighting apparatus 1 according to the invention in a plan view
- FIG. 1b shows a cross-sectional view along the line AB.
- the lighting device 1 is used in particular for illuminating extensive surfaces or objects. In this case, lighting device 1 and / or target to be irradiated if necessary, also be moved against each other during the irradiation.
- the lighting device 1 comprises a tube 2 made of glass, in the interior of which an elongate metallic carrier 3, six LED 4 of the Diamond Dragon® type or OSTAR® Compact (OSRAM Opto Semiconductors) on a printed circuit board (PCB), six the LED 4 individually associated separate reflectors 5 and an elongated biconvex cylindrical lens 6 are arranged made of quartz glass.
- the outer contour of the elongated carrier 3 is formed on a first side in cross section as a pitch circle so that it snuggles into the inner surface of the tube 2.
- the six LEDs 4 and the associated six reflectors 5 are mounted in the longitudinal direction in a row.
- Each reflector 5 has in plan view a rectangular basic shape, with an asymmetrical recess 7, which - starting from a quadrangular reflector opening edge 8 - tapers towards the reflector bottom and ends in a bore through which the associated LED 4 protrudes. Due to the asymmetrical design of the reflectors, the lighting device 1 is particularly suitable for surfaces to be irradiated, whose perpendicular bisector does not point to the LED reflector elements 4, 5. The entire surface of the reflectors 5, including the recesses 7, is provided with a reflective layer (not shown). Above the reflector opening edges 8, the cylindrical collecting lens 6 is enclosed in narrow elevations 9, 10 of the reflectors 5 extending on both sides parallel to the longitudinal axis.
- the curvature of the outer surface of the cylindrical collecting lens 6 is the same as that of the outer, of The reflector openings facing away from the reflector openings 5 adapted to the curvature of the inner surface of the tube 2.
- the carrier 3 is provided with two longitudinal bores IIa, IIb for the passage of a cooling liquid.
- FIGs 2a, 2b show a schematic representation of a plan view or cutaway end view of another embodiment of a lighting device 1 'according to the invention.
- such an LED reflector module 40 may also comprise more or fewer LED reflector elements 4, 5 '.
- the LED reflector module 40 is attached via an angle rail 12 on one side of an elongate carrier 3 '.
- the outer contour of the elongate carrier 3 ' is formed in cross-section as a pitch circle and nestles in the inner surface of the glass tube 2 a.
- a plurality of LED reflector modules 40 on the elongate support 3' (not shown).
- this modular concept is very flexible if - depending on the application - different lengths of lighting devices 1 'are required.
- an elongate biconvex cylindrical lens 6' is arranged between the reflector opening edges 8 'and the inner surface of the tube 2 .
- the Curvature of the outer surface of the cylindrical collecting lens 6 ' is here adapted to the curvature of the inner surface of the tube 2.
- the contour of the reflector openings 8 ' is adapted to the curvature of the facing surface of the cylindrical collecting lens 6'.
- the cylindrical collecting lens 6 ' is supported at both its ends by means of a holding plate 13 mounted on the elongate carrier 3' (only visible at one end in FIG. 2).
- the driver electronics can be arranged wholly or partially on the PCB.
- the two ends of the tubular lighting device are suitably closed (not shown).
- FIG. 4 shows a measured illumination intensity distribution of the illumination device from FIG. 1a.
- the y-axis shows the distribution along the longitudinal axis of the tubular illumination device, the x-axis perpendicular thereto.
- the lighting device produces a nearly rectangular, elongated illuminance distribution with a relatively constant illuminance.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Led Device Packages (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009035516.2A DE102009035516B4 (de) | 2009-07-31 | 2009-07-31 | Beleuchtungsvorrichtung mit Leuchtdioden |
PCT/EP2010/058918 WO2011012381A1 (de) | 2009-07-31 | 2010-06-23 | Beleuchtungsvorrichtung mit leuchtdioden |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2459924A1 true EP2459924A1 (de) | 2012-06-06 |
EP2459924B1 EP2459924B1 (de) | 2018-01-24 |
Family
ID=42540154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10728194.1A Not-in-force EP2459924B1 (de) | 2009-07-31 | 2010-06-23 | Beleuchtungsvorrichtung mit leuchtdioden |
Country Status (5)
Country | Link |
---|---|
US (1) | US8641233B2 (de) |
EP (1) | EP2459924B1 (de) |
CN (1) | CN102472433B (de) |
DE (1) | DE102009035516B4 (de) |
WO (1) | WO2011012381A1 (de) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009022093A (ja) * | 2007-07-11 | 2009-01-29 | Ricoh Co Ltd | 多出力電源装置 |
JP5457851B2 (ja) * | 2010-01-19 | 2014-04-02 | パナソニック株式会社 | 照明器具 |
US10883702B2 (en) | 2010-08-31 | 2021-01-05 | Ideal Industries Lighting Llc | Troffer-style fixture |
US10309627B2 (en) | 2012-11-08 | 2019-06-04 | Cree, Inc. | Light fixture retrofit kit with integrated light bar |
US9822951B2 (en) | 2010-12-06 | 2017-11-21 | Cree, Inc. | LED retrofit lens for fluorescent tube |
US9494293B2 (en) | 2010-12-06 | 2016-11-15 | Cree, Inc. | Troffer-style optical assembly |
US9581312B2 (en) | 2010-12-06 | 2017-02-28 | Cree, Inc. | LED light fixtures having elongated prismatic lenses |
DE102011000711A1 (de) * | 2011-02-14 | 2012-08-16 | Stefan Boettle | Tankstelle |
DE102011076613B4 (de) | 2011-05-27 | 2022-10-20 | Siteco Gmbh | LED-Leuchte und Verfahren zur Herstellung der LED-Leuchte |
US10823347B2 (en) | 2011-07-24 | 2020-11-03 | Ideal Industries Lighting Llc | Modular indirect suspended/ceiling mount fixture |
US9423117B2 (en) | 2011-12-30 | 2016-08-23 | Cree, Inc. | LED fixture with heat pipe |
US10544925B2 (en) | 2012-01-06 | 2020-01-28 | Ideal Industries Lighting Llc | Mounting system for retrofit light installation into existing light fixtures |
US9777897B2 (en) | 2012-02-07 | 2017-10-03 | Cree, Inc. | Multiple panel troffer-style fixture |
US8905575B2 (en) | 2012-02-09 | 2014-12-09 | Cree, Inc. | Troffer-style lighting fixture with specular reflector |
US10054274B2 (en) | 2012-03-23 | 2018-08-21 | Cree, Inc. | Direct attach ceiling-mounted solid state downlights |
US9494294B2 (en) | 2012-03-23 | 2016-11-15 | Cree, Inc. | Modular indirect troffer |
US9310038B2 (en) | 2012-03-23 | 2016-04-12 | Cree, Inc. | LED fixture with integrated driver circuitry |
US9360185B2 (en) | 2012-04-09 | 2016-06-07 | Cree, Inc. | Variable beam angle directional lighting fixture assembly |
US9874322B2 (en) | 2012-04-10 | 2018-01-23 | Cree, Inc. | Lensed troffer-style light fixture |
US9285099B2 (en) | 2012-04-23 | 2016-03-15 | Cree, Inc. | Parabolic troffer-style light fixture |
US8931929B2 (en) | 2012-07-09 | 2015-01-13 | Cree, Inc. | Light emitting diode primary optic for beam shaping |
US9494304B2 (en) | 2012-11-08 | 2016-11-15 | Cree, Inc. | Recessed light fixture retrofit kit |
US10648643B2 (en) | 2013-03-14 | 2020-05-12 | Ideal Industries Lighting Llc | Door frame troffer |
CN105190162A (zh) * | 2013-03-15 | 2015-12-23 | 科锐香港有限公司 | 模块化透镜暗灯槽灯具 |
US9052075B2 (en) | 2013-03-15 | 2015-06-09 | Cree, Inc. | Standardized troffer fixture |
USD786471S1 (en) | 2013-09-06 | 2017-05-09 | Cree, Inc. | Troffer-style light fixture |
USD807556S1 (en) | 2014-02-02 | 2018-01-09 | Cree Hong Kong Limited | Troffer-style fixture |
USD772465S1 (en) | 2014-02-02 | 2016-11-22 | Cree Hong Kong Limited | Troffer-style fixture |
USD749768S1 (en) | 2014-02-06 | 2016-02-16 | Cree, Inc. | Troffer-style light fixture with sensors |
US10527225B2 (en) | 2014-03-25 | 2020-01-07 | Ideal Industries, Llc | Frame and lens upgrade kits for lighting fixtures |
US10012354B2 (en) | 2015-06-26 | 2018-07-03 | Cree, Inc. | Adjustable retrofit LED troffer |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US4507181A (en) * | 1984-02-17 | 1985-03-26 | Energy Conversion Devices, Inc. | Method of electro-coating a semiconductor device |
ATE380971T1 (de) * | 1999-07-21 | 2007-12-15 | Teledyne Lighting & Display | Beleuchtungsvorrichtung |
US7049761B2 (en) * | 2000-02-11 | 2006-05-23 | Altair Engineering, Inc. | Light tube and power supply circuit |
DE10134975B4 (de) * | 2000-08-01 | 2005-09-22 | Move & Traffic Controls Gmbh | Anordnung eines optischen Bild-Scanners zur Erfassung großer Objekte, bei der die Detektionsobjekte bewegt werden |
WO2003004930A1 (en) * | 2001-07-02 | 2003-01-16 | Moriyama Sangyo Kabushiki Kaisha | Display and illumination device and display and illumination system |
US7192161B1 (en) * | 2001-10-18 | 2007-03-20 | Ilight Technologies, Inc. | Fluorescent illumination device |
US6860628B2 (en) * | 2002-07-17 | 2005-03-01 | Jonas J. Robertson | LED replacement for fluorescent lighting |
US20060146531A1 (en) * | 2004-12-30 | 2006-07-06 | Ann Reo | Linear lighting apparatus with improved heat dissipation |
JP2008218141A (ja) * | 2007-03-02 | 2008-09-18 | Mori Noriko | Ledランプ |
JP2009158533A (ja) * | 2007-12-25 | 2009-07-16 | Takehisa Saito | 光発生装置 |
US8360599B2 (en) * | 2008-05-23 | 2013-01-29 | Ilumisys, Inc. | Electric shock resistant L.E.D. based light |
TW201013097A (en) * | 2008-09-16 | 2010-04-01 | Univ Ishou | Light emitting diode lamp tube |
TWM367286U (en) * | 2008-12-22 | 2009-10-21 | Hsin I Technology Co Ltd | Structure of LED lamp tube |
DE102009023216B4 (de) * | 2009-05-29 | 2011-11-10 | Andreas Czarnotta | Lichtquelle |
US8382314B2 (en) * | 2010-05-12 | 2013-02-26 | Fred OU | LED channel |
CN101881387A (zh) * | 2010-06-10 | 2010-11-10 | 鸿富锦精密工业(深圳)有限公司 | Led日光灯 |
-
2009
- 2009-07-31 DE DE102009035516.2A patent/DE102009035516B4/de not_active Expired - Fee Related
-
2010
- 2010-06-23 CN CN201080033205.XA patent/CN102472433B/zh active Active
- 2010-06-23 US US13/388,292 patent/US8641233B2/en active Active
- 2010-06-23 EP EP10728194.1A patent/EP2459924B1/de not_active Not-in-force
- 2010-06-23 WO PCT/EP2010/058918 patent/WO2011012381A1/de active Application Filing
Also Published As
Publication number | Publication date |
---|---|
DE102009035516B4 (de) | 2014-10-16 |
EP2459924B1 (de) | 2018-01-24 |
CN102472433B (zh) | 2015-05-06 |
US20120127714A1 (en) | 2012-05-24 |
CN102472433A (zh) | 2012-05-23 |
US8641233B2 (en) | 2014-02-04 |
DE102009035516A1 (de) | 2011-04-14 |
WO2011012381A1 (de) | 2011-02-03 |
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