NL2011346C2 - A led lighting unit and a method. - Google Patents

A led lighting unit and a method. Download PDF

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Publication number
NL2011346C2
NL2011346C2 NL2011346A NL2011346A NL2011346C2 NL 2011346 C2 NL2011346 C2 NL 2011346C2 NL 2011346 A NL2011346 A NL 2011346A NL 2011346 A NL2011346 A NL 2011346A NL 2011346 C2 NL2011346 C2 NL 2011346C2
Authority
NL
Netherlands
Prior art keywords
emergency
led
regular
led light
unit
Prior art date
Application number
NL2011346A
Other languages
Dutch (nl)
Inventor
Luc Truyen
Original Assignee
Etap Nv
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Etap Nv filed Critical Etap Nv
Priority to NL2011346A priority Critical patent/NL2011346C2/en
Priority to EP14182498.7A priority patent/EP2843300A1/en
Application granted granted Critical
Publication of NL2011346C2 publication Critical patent/NL2011346C2/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
    • F21S9/022—Emergency lighting devices
    • F21S9/024—Emergency lighting devices using a supplementary light source for emergency lighting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S8/00—Lighting devices intended for fixed installation
    • 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
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • 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
    • F21Y2105/10—Planar light sources comprising a two-dimensional [2D] 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
    • F21Y2105/10—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements
    • F21Y2105/12—Planar light sources comprising a two-dimensional [2D] array of point-like light-generating elements characterised by the geometrical disposition of the light-generating elements, e.g. arranging light-generating elements in differing patterns or densities
    • 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]

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)

Abstract

The invention relates to a LED lighting unit, comprising an armature (2) and a lighting module (3) carried by the armature (2). The lighting module (3) includes at least one regular LED light source (6) and an optic element (4) forming a radiation pattern from an optic beam generated by the regular LED light source (6). The lighting module (3) further includes an emergency unit (7) having a printed circuit substrate (8) and at least one emergency LED light source (9) placed adjacent the regular LED light source (6) such that the optic element (4) also forms a radiation pattern from an optic beam generated by the emergency LED light source (9).

Description

Title: A LED lighting unit and a method
The invention relates to LED lighting unit, comprising an armature and a lighting module carried by the armature, the lighting module including at least one regular LED light source and an optic element forming a radiation pattern from an optic beam generated by the regular LED light source.
Such a LED hghting unit is generally known for lighting rooms in buildings, such as offices etc. The driver is arranged for generating power signals to the individual LED’s so that an optimal light beam is generated and focused to an area to be lighted, usuahy the floor. For energy consumption purposes, the optical element is typicahy designed such that a so-called depth radiation pattern is provided.
Also emergency hghting units are known for providing light in emergency situations, especially when the mains power voltage drops. Such emergency hghting units are powered by an emergency power source and have a specific optic element for providing a so-called wide radiation pattern, thereby minimizing the number of emergency hghting units that are required in an area to be lighted.
It is an object of the present invention to provide a LED hghting unit that is suitable for generating an emergency light and that is also attractive from an economical point of view. Thereto, according to the invention, a LED hghting unit according to the preamble is provided, wherein the hghting module further includes an emergency unit having a printed circuit substrate and at least one emergency LED light source mounted on said printed circuit substrate and placed adjacent the regular LED light source such that the optic element also forms a radiation pattern from an optic beam generated by the emergency LED light source.
By integration the function of regular lighting with the function of emergency lighting, a single lighting unit can advantageously be used for both purposes.
The invention is at least partially based on the insight that for the purpose of the emergency function, only a reduced light intensity is required that can be generated by a reduced number of LED’s, or even a single LED in the lighting unit. Here, the property can advantageously be exploited that the light intensity generated by a LED is easily controlled by the electrical power that is offered to the LED, thereby enabling a very efficient emergency function. Also, the generation of the so-called depth radiation pattern enables efficient use of energy, also in the emergency state of the lighting unit.
The invention is also at least partially based on the insight that due to the size of LED light sources, the emergency LED light source can be placed close to the regular LED light source such that a single optic element is required for providing a desired radiation pattern both from light generated by the regular LED light source and form light generated by the emergency LED light source.
Further, the emergency function of the lighting unit is invisibly integrated in the regular LED lighting unit, and no separate emergency lighting units have to be installed, implying that a costly and relatively complicated study and design of the number and location of emergency lighting units having specific optical modules is now superfluous. Also, a cost reduction can be obtained in terms of installation effort. As in principle each LED hghting unit in an area in the building can be used in an emergency state, the emergency lighting approach is inherently more safe compared to the traditional design of dedicated emergency lighting units. This is due to the fact that traditional emergency lighting units are minimized in number, causing a relatively dark spot when an emergency lighting unit does not provide light, while in the new approach a relatively large number of lighting units can be used, so that a single defect lighting unit generates only a minor dark spot. In addition, the depth radiation pattern of the LED light unit reduces the chance of dazzling persons, in contrast to the traditional emergency hghting units that usually have a wide radiation pattern.
Advantageously, by providing the emergency unit with a printed circuit substrate that is separate from the structure on which the regular LED light sources are mounted, a conventional LED hghting unit that has been installed can easily be upgraded to a LED hghting unit according to the invention. Further, the emergency unit can thus be repaired or exchanged easily without interfering with the regular functionality of the LED hghting unit.
Additional advantageous embodiments according to the invention are described in the following claims.
By way of example only, embodiments of the present invention wih now be described with reference to the accompanying figures in which
Fig. 1 shows a schematic perspective view of a LED hghting unit according to a first embodiment of the invention, and
Fig. 2 shows a schematic perspective partial exploded view of a LED hghting unit according to a second embodiment of the invention.
It is noted that Fig. 1 and Fig. 2 show merely preferred embodiments according to the invention. In the figures, the same reference numbers refer to equal or corresponding parts.
Figure 1 shows a schematic perspective view of a LED hghting unit 1 according to a first embodiment of the invention. The unit 1 comprises an armature 2 and a multiple number of hghting modules 3 carried by the armature 2. Each of the hghting modules 3 includes a single or a multiple number of regular LED hght sources. Further, each of the hghting modules 3 includes an optic element 4 for forming a radiation pattern B from an optic beam generated by the regular LED hght sources.
The optic element 4 may include a single or a multiple number of optical parts, such as reflecting and/or diffusing parts, for providing a so-called depth radiation pattern wherein the light is mainly focused downwardly towards the floor of the space wherein the unit 1 has to be mounted. The intensity of light propagating in a sideward direction is relatively small. However, the optic element 4 may also be designed to form another radiation pattern from the hght that is generated by the regular LED light sources, e.g. a relatively wide beam. In the shown embodiment, the lighting modules 3 are arranged in a matrix having rows and columns. However, the lighting modules can also be arranged in another pattern, e.g. in a one-dimensional row or in another mainly uniform or non-uniform distributed manner.
According to an aspect of the invention, the lighting module further includes an emergency unit having a printed circuit substrate and at least one emergency LED hght source placed adjacent the regular LED hght source such that the optic element also forms a radiation pattern from an optic beam generated by the emergency LED light source.
Figure 2 shows a schematic perspective partial exploded view of a LED lighting unit 1 according to a second embodiment of the invention. Here, the lighting modules 3 are arranged in a one-dimensional row. In Fig. 2, three hghting modules 3 are visible. The optic element 4 of the lighting module 3 in the middle has been lifted making the structure behind the optic element 4 visible.
The lighting module 3 includes a mounting unit 5, attached to the armature 2 on which mounting unit 5 the regular LED light source 6 is mounted. The emergency unit 7 includes a printed circuit substrate 8 and four emergency LED light sources 9a-d placed adjacent the regular LED light source 6. The emergency LED light sources 9 are located on a circle 10, preferably evenly distributed in the circumferential direction, surrounding a line of symmetry S of the optic element 4 such that the optic element 4 also forms a radiation pattern from the optic beams generated by the emergency LED light sources 9. By locating the emergency LED light sources close to the regular LED light source, the optic element 4 provides a desired light pattern, both from the regular and the emergency LED light sources 6, 9. Thus, the use of additional optic elements is superfluous, thereby reducing costs and maintaining an esthetical design of the LED hghting unit 1.
Preferably, the printed circuit substrate 8 of the emergency unit 7 includes a flexible circuit foil, e.g. made from a flexible PCB or a plastic such as a polyimide, PEEK or a transparent conductive polyester film. By applying a flexible circuit foil, the process of assembling the lighting module is rendered simple and a chance of damage during handling the armature is low. Alternatively, another printed circuit substrate can be apphed, such as a rigid printed circuit board, e.g. FR4, can be applied.
It is noted that, generally, the emergency LED light sources 9 are located close to the hne of symmetry S of the optic element 4, thereby improving the optical performance of the optic element 4 relative to the emergency LED light sources 9. Generally, the emergency LED light sources have an offset relative to said line of symmetry S. However, an emergency LED light source can also be located at said line of symmetry S, or at a distance more remote from said line of symmetry S.
As shown in Fig. 2, the printed circuit substrate 8 of the emergency unit 7 is located between the mounting unit 5 and the optic element 4 of the lighting module 3. By interposing the printed circuit substrate 8 between the optic element 4 and the structure on which the regular LED light source is mounted, the regular LED light source and the emergency LED light sources can be located close to each other, thereby providing a module 3 with a single optic element 4 generating a desired radiation pattern for both the regular and the emergency LED hght sources. In this respect it is noted that the mounting unit 5 can be replaced by another structure on which the regular LED light source 6 is mounted.
Further, the regular LED light source 6 can be mounted directly on the armature 2 of the lighting unit 1.
According to an aspect of the invention, the structure on which the regular LED light source is mounted and the printed circuit substrate of the emergency unit are different.
The printed circuit substrate 8 is provided with an opening 11 allowing light generated by the regular LED light source 6 of the lighting module 3 to propagate towards the optic element 4. By providing the opening 11, the regular LED light source 6 and the emergency LED light sources 9 can be located close to each other in a compact design while maintaining a reliable, stable assembhng process. In particular embodiments, the hghting module 3 includes a multiple number of regular LED light sources. Then, the printed circuit substrate of the emergency unit 7 can be provided with a multiple number of openings, each of them allowing light generated by a single or a multiple number of regular LED light sources 6 to propagate towards the optic element 4. In the shown embodiment, the number of emergency LED light sources 9 is four.
However, also another number of emergency LED light sources 9 can be applied, e.g. three, two or one emergency LED light source, or more than four light sources, e.g. five or ten emergency LED fight sources.
In an alternative embodiment, the mounting unit 5 with the at least one regular LED light source is interposed between the optic element 4 and the printed circuit substrate 8. Then, openings can be provided in the mounting unit 5 allowing light generated by the at least one emergency LED fight source to propagate towards the optic element 4.
In the shown embodiment, the optic element 4 is dome-shaped, and the emergency LED light sources are located within the dome of the optic element. Apparently, the optic element 4 may have another geometry, e.g. being plate-shaped. Generally, the light generated by the LED light sources propagates through and/or along the optic element 4 for obtaining a desired radiation pattern.
Preferably, the emergency LED’s generate an emitted flux that is less than 10% of the flux emitted by the regular LED’s, thereby saving power during an emergency situation.
The LED lighting unit 1 may includes a multiple number of lighting modules 3 as described above, i.e. including an emergency unit 7. However, the LED hghting unit 1 may also include only one lighting module 3 with an emergency unit 7. Further, the LED lighting unit 1 may include lighting modules 3 without an emergency unit, i.e. including only one or more regular LED light sources, not including an emergency LED light source.
The LED lighting unit 1 further includes regular input terminals 12 for being connected to a regular driver driving the regular LED’s when the LED lighting unit 1 is switched on. The printed circuit substrate 8 of the emergency unit 7 includes also emergency input terminals 13 for being connected to an emergency driver for driving the emergency LED’s in case of emergency. Preferably, all emergency LED light sources of the LED lighting unit, optionally from a multiple number of emergency units, are driven via a single set of emergency input terminals 13.
According to an aspect of the invention, a hghting system is provided including a regular driver, an emergency driver and a LED lighting unit as described above, wherein the regular driver is connected to the regular input terminals for driving the at least one regular LED light source of the lighting module, and wherein the emergency driver is connected to the emergency input terminals for driving the at least one emergency LED light source.
Advantageously, the hghting system includes a multiple number of LED lighting units as described above, wherein the emergency driver is connected to the emergency input terminals of the multiple number of LED lighting units, for driving the at least one emergency LED light source of the multiple number of LED lighting units. Alternatively, the emergency input terminals of each LED lighting unit are connected to a corresponding emergency driver so that each emergency driver drives the at least one emergency LED light source of a corresponding LED hghting unit.
Preferably, each LED hghting unit in a room and/or each LED hghting unit of a hghting system is provided with an emergency unit as described above.
The emergency driver drives the emergency LED light sources when the mains voltage drops and the regular driver stops operating. A mains power keeping the regular driver in operation can be implemented as 230 V or other typical voltage values offered by regular electrical power connections. The emergency power can be formed by a separate mains voltage and/or a local power supply, such as a battery 7. Further, control lines can be connected to manual or automatic switches.
During regular use of the LED hghting unit 1, when the mains voltage is active, the multiple number of regular LED’s 3 are driven by providing a mains voltage, via the regular driver, to the individual LED’s 3.
However, during a mains voltage drop, the emergency driver starts operating supplying power to the emergency LED’s, via the emergency input terminals 13.
The invention is not restricted to the embodiments described herein. It will be understood that many variants are possible. A regular or emergency LED hght source can be implemented as an OLED or a chip on board (COB) module, and/or may include a remote phosphor module.
These and other embodiments wih be apparent for the person skilled in the art and are considered to fall within the scope of the invention as defined in the following claims.

Claims (16)

1. LED verlichtingseenheid, omvattende een armatuur en een verlichtingsmodule gedragen door de armatuur, waarbij de verlichtingsmodule tenminste één reguliere LED lichtbron omvat en een optisch element dat een stralingspatroon vormt van een optische bundel die wordt gegenereerd door de reguliere LED hchtbron, waarbij de verlichtingsmodule voorts een noodeenheid omvat met een geprinte schakelingsubstraat en tenminste één nood LED hchtbron bevestigd op het geprinte schakelingsubstraat en geplaatst nabij de reguliere LED hchtbron zodat het optisch element ook een stralingspatroon vormt van een optische bundel die wordt gegenereerd door de nood LED hchtbron.A LED lighting unit comprising a fixture and a lighting module carried by the fixture, the lighting module comprising at least one regular LED light source and an optical element forming a radiation pattern of an optical beam generated by the regular LED focal source, the lighting module further an emergency unit comprising with a printed circuit substrate and at least one emergency LED hold source mounted on the printed circuit substrate and disposed near the regular LED hold source so that the optical element also forms a radiation pattern of an optical beam generated by the emergency LED hold source. 2. LED verlichtingseenheid volgens conclusie 1, waarbij de verlichtingsmodule een meervoudig aantal reguliere LED lichtbronnen omvat.The LED lighting unit according to claim 1, wherein the lighting module comprises a plurality of regular LED light sources. 3. LED verlichtingseenheid volgens conclusie 1 of 2, waarbij de noodeenheid een meervoudig aantal nood LED lichtbronnen omvat.The LED lighting unit according to claim 1 or 2, wherein the emergency unit comprises a plurality of emergency LED light sources. 4. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij het geprinte schakelingsubstraat van de noodeenheid een flexibel schakelingsfolie omvat.LED lighting unit according to one of the preceding claims, wherein the printed circuit substrate of the emergency unit comprises a flexible circuit foil. 5. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij een geometrisch centrum van de tenminste ene nood LED hchtbron nabij een symmetrielijn van het optisch element is.LED lighting unit according to one of the preceding claims, wherein a geometric center of the at least one emergency LED holding source is near a line of symmetry of the optical element. 6. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij de tenminste ene nood LED lichtbronnen zich op een cirkel bevinden die een symmetrielijn van het optische element omgeeft.6. LED lighting unit according to one of the preceding claims, wherein the at least one emergency LED light sources are situated on a circle surrounding a line of symmetry of the optical element. 7. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij de verlichtingsmodule voorts een bevestigingseenheid omvat waarop de reguliere LED lichtbron is bevestigd.7. LED lighting unit according to one of the preceding claims, wherein the lighting module further comprises a mounting unit on which the regular LED light source is mounted. 8. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij het geprinte schakelingsubstraat van de noodeenheid zich bevindt tussen de bevestigingseenheid en het optische element van de verlichtingsmodule.8. LED lighting unit according to one of the preceding claims, wherein the printed circuit substrate of the emergency unit is located between the mounting unit and the optical element of the lighting module. 9. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij het geprinte schakelingsubstraat van de noodeenheid tenminste één opening omvat dat het mogelijk maakt dat licht dat wordt gegenereerd door de reguliere LED lichtbron van de verlichtingsmodule naar het optische element propageert.The LED lighting unit according to any of the preceding claims, wherein the printed circuit substrate of the emergency unit comprises at least one aperture that allows light generated by the regular LED light source from the lighting module to propagate to the optical element. 10. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij het optische element een koepelvorm heeft.LED lighting unit according to one of the preceding claims, wherein the optical element has a dome shape. 11. LED verlichtingseenheid volgens conclusie 10, waarbij de tenminste ene nood LED lichtbron zich in de koepel van het optische element bevindt.The LED lighting unit of claim 10, wherein the at least one emergency LED light source is located in the dome of the optical element. 12. LED verlichtingseenheid volgens één der voorgaande conclusies, omvattende een meervoudig aantal verhchtingsmodules die exclusief tenminste één reguliere LED lichtbron omvatten.12. LED lighting unit according to any one of the preceding claims, comprising a multiple number of relationship modules that exclusively comprise at least one regular LED light source. 13. LED verlichtingseenheid volgens één der voorgaande conclusies, waarbij het geprinte schakelingsubstraat van de noodeenheid en de bevestigingseenheid van de verlichtingsmodule separaat zijn.The LED lighting unit according to any of the preceding claims, wherein the printed circuit substrate of the emergency unit and the mounting unit of the lighting module are separate. 14. LED verlichtingseenheid volgens één der voorgaande conclusies, omvattende reguliere invoer-aansluitpunten voor het voeden van de tenminste ene reguliere LED lichtbron van de verlichtingsmodule, waarbij het geprinte schakelingsubstraat van de noodeenheid nood invoer-aansluitpunten omvat voor het voeden van de tenminste ene nood LED lichtbron.LED lighting unit according to any of the preceding claims, comprising regular input terminals for supplying the at least one regular LED light source of the lighting module, wherein the printed circuit substrate of the emergency unit comprises emergency input terminals for supplying the at least one emergency LED light source. 15. Verlichtingssysteem, omvattende een reguliere regeleenheid, een nood regeleenheid en een LED verlichtingseenheid volgens conclusie 14, waarbij de reguliere regeleenheid is verbonden met de reguliere invoer-aansluitpunten voor het voeden van de tenminste ene reguliere LED lichtbron van de verlichtingsmodule, en waarbij de noodregeleenheid is verbonden met de nood invoer-aansluitpunten voor het voeden van de tenminste ene nood LED lichtbron.A lighting system comprising a regular control unit, an emergency control unit and an LED lighting unit according to claim 14, wherein the regular control unit is connected to the regular input terminals for supplying the at least one regular LED light source of the lighting module, and wherein the emergency control unit is connected to the emergency input terminals for supplying the at least one emergency LED light source. 16. Verlichtingssysteem volgens conclusie 15, omvattende een meervoudig aantal LED verlichtingseenheden volgens conclusie 14, waarbij de nood regeleenheid is verbonden met de nood invoer-aansluitpunten van het meervoudig aantal LED verlichtingseenheden, voor het voeden van de tenminste ene nood LED lichtbron van het meervoudig aantal LED verlichtingseenheden.The lighting system of claim 15, comprising a plurality of LED lighting units according to claim 14, wherein the emergency control unit is connected to the emergency input terminals of the plurality of LED lighting units, for supplying the at least one emergency LED light source of the plurality of LED lighting units.
NL2011346A 2013-08-28 2013-08-28 A led lighting unit and a method. NL2011346C2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
NL2011346A NL2011346C2 (en) 2013-08-28 2013-08-28 A led lighting unit and a method.
EP14182498.7A EP2843300A1 (en) 2013-08-28 2014-08-27 A LED lighting unit and a method

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2011346A NL2011346C2 (en) 2013-08-28 2013-08-28 A led lighting unit and a method.
NL2011346 2013-08-28

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Publication Number Publication Date
NL2011346C2 true NL2011346C2 (en) 2015-03-03

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NL2011346A NL2011346C2 (en) 2013-08-28 2013-08-28 A led lighting unit and a method.

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NL (1) NL2011346C2 (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2430728A (en) * 2005-09-21 2007-04-04 Imt Bv Lamp with secondary LEDs for providing light after explosion
CH697541B1 (en) * 2005-03-15 2008-11-28 Regent Beleuchtungskoerper Ag Light and use of this.
US20100020527A1 (en) * 2008-07-23 2010-01-28 Fiermuga Robert F Emergency egress lighting system
US20110068692A1 (en) * 2009-09-24 2011-03-24 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led lamp
DE202011102371U1 (en) * 2011-06-27 2011-08-18 Wen-Tsung Lin Light source with energy recovery and storage function
GB2489505A (en) * 2011-03-31 2012-10-03 Litonics Ltd Lighting apparatus control method
DE202012009636U1 (en) * 2011-10-07 2012-11-08 Tridonic Gmbh & Co. Kg Lighting system with a light source

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH697541B1 (en) * 2005-03-15 2008-11-28 Regent Beleuchtungskoerper Ag Light and use of this.
GB2430728A (en) * 2005-09-21 2007-04-04 Imt Bv Lamp with secondary LEDs for providing light after explosion
US20100020527A1 (en) * 2008-07-23 2010-01-28 Fiermuga Robert F Emergency egress lighting system
US20110068692A1 (en) * 2009-09-24 2011-03-24 Fu Zhun Precision Industry (Shen Zhen) Co., Ltd. Led lamp
GB2489505A (en) * 2011-03-31 2012-10-03 Litonics Ltd Lighting apparatus control method
DE202011102371U1 (en) * 2011-06-27 2011-08-18 Wen-Tsung Lin Light source with energy recovery and storage function
DE202012009636U1 (en) * 2011-10-07 2012-11-08 Tridonic Gmbh & Co. Kg Lighting system with a light source

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