WO2011107979A1 - Led lamp fitting having an integral cooling fan - Google Patents
Led lamp fitting having an integral cooling fan Download PDFInfo
- Publication number
- WO2011107979A1 WO2011107979A1 PCT/IL2011/000171 IL2011000171W WO2011107979A1 WO 2011107979 A1 WO2011107979 A1 WO 2011107979A1 IL 2011000171 W IL2011000171 W IL 2011000171W WO 2011107979 A1 WO2011107979 A1 WO 2011107979A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lamp
- support element
- air
- housing
- lamp support
- Prior art date
Links
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
- F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
- F21V29/77—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-like cross-section
- F21V29/773—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades with essentially identical diverging planar fins or blades, e.g. with fan-like or star-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
- 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
-
- 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
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/507—Cooling arrangements characterised by the adaptation for cooling of specific components of means for protecting lighting devices from damage, e.g. housings
-
- 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
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
- F21V29/673—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for intake
-
- 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
- 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
- F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
- F21Y2103/33—Elongate light sources, e.g. fluorescent tubes curved annular
-
- 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
- This invention relates to lamp fittings having an integral cooling fan.
- LEDS Light-emitting diodes
- halogen lamps are gradually replacing halogen lamps as the preferred choice for low power, high intensity spots.
- a halogen lamp rated at 35/50W is replaced by LEDs, a lamp fitting that can accommodate several power LEDs is required in order to provide equivalent illumination.
- a power LED gets extremely hot at its rear surface and the heat must be dissipated in order to prevent damage to the LED as well avoid the risk of fire.
- the heat is imparted to the circuit board, which becomes very hot and must be dissipated.
- CN 200810218685 discloses an LED lamp fitting that comprises a thermally conductive base plate in thermal contact with a heat sink, a shell and a drive circuit board component.
- the base plate is fixedly connected with at least one LED chip and the heat sink is connected to the base plate for heat dissipation.
- the drive circuit board component is positioned inside the shell and the heat sink is positioned between a radiating fan and the base plate.
- Fig. 85 a thermal facility for removing heat from a LED lighting unit.
- the thermal facility may be any facility for managing the flow of heat, such as a fan or similar mechanism for providing air flow to the lighting unit.
- a fan or other convection facility can be under control of a processor and a temperature sensor such as a thermostat to provide cooling when necessary and to remain off when not necessary.
- Fig. 91 shows an embodiment that employs a thermally conductive plate in combination with a micro-fan.
- US20060232984 discloses air flow management of a compact fluorescent lamp fixture wherein passive and/or active lamp chamber ventilation is provided through the use of vents in the lamp chamber and/or the use of a fan to induce air flow.
- a compact light emitting diode (LED) lamp fixture comprising:
- thermally conductive housing having a base containing a plurality of rear air vents
- a heat sink depending from a rear surface of the base for dissipating heat from air passing out of the rear air vents
- thermally conductive lamp support element for supporting a number of spaced apart LEDs and having a substantially central aperture for accommodating a miniature fan that is mounted so as to suck in air from a front of the lamp fixture
- a cover having an equal number of spaced apart lenses each for propagating light emitted by a corresponding one of the LEDs
- vent holes in the cover for passing air sucked by the fan from outside the lamp fixture into the housing so as to strike the base whereupon the air is deflected directly on to a rear surface of the lamp support element, circulates within the hollow chamber and exits through the rear air vents.
- a method of improving the efficiency of a compact LED lamp assembly that includes a housing, a lamp support element, and a front cover, the method comprising: providing a ventilation passage from the front cover through the lamp support to a hollow chamber at a rear of the housing so that air drawn through the front cover strikes the rear of the housing and is deflected directly on to a rear surface of the lamp support element, circulates within the hollow chamber and exits through rear air vents formed in the rear of the housing;
- Fig. 1 is an exploded pictorial representation of a lamp fixture according to the invention
- Fig. 2 is an exploded pictorial representation of the lamp fixture shown in Fig. 1 showing direction of air flow during use;
- Fig. 3 is an exploded rear view of the lamp fixture shown in Fig. 1;
- Fig. 4 is partial section of the lamp fixture shown in Fig. 1 in its assembled state
- Fig. 5 is partial section of the lamp fixture shown in Fig. 1 in its assembled state showing direction of air flow during use.
- a compact LED lamp fixture 10 comprising a thermally conductive housing 11 having a base 12 containing a plurality of rear air vents 13.
- a heat sink 14 having a plurality of thermally conducting vanes 15 depends from a rear surface 16 of the base for dissipating heat from air passing out of the rear air vents 13.
- a thermally conductive lamp support element 17 is configured for supporting a plurality of spaced apart LEDs 18 and has a substantially central aperture 19 for accommodating a miniature fan 20 that is mounted so as to suck in air from a front of the lamp fixture 10.
- At least two thermally conductive spacing elements 21 are provided on a front surface of the base for mounting the lamp support element thereon so as to form a hollow chamber 22 behind the lamp support element 17.
- a removable cover 23 Fixed to the front of the housing is a removable cover 23 having an equal number of spaced apart lenses 24 each for propagating light emitted by a corresponding one of the LEDs.
- a plurality of vent holes 25 are formed in the cover 23 for passing air sucked by the fan 20 from outside the lamp fixture into the housing 11 so as to strike the base 12. Air striking the base is deflected directly on to a rear surface of the lamp support element 17, circulates within the hollow chamber 22 and exits through the rear air vents 13 where it is dissipated by the heat sink 14. In circulating within the hollow chamber 22, the cool air also cools the spacing elements 21, which are preferably equal in number of the number of LEDs and are disposed directly underneath a corresponding LED. In such an arrangement, the cool air that is sucked in by the fan 20, cools the spacing elements 21 by direct impact and cools the hot spots on the lamp support element 17 via direct thermal contact with the thermally conductive spacing elements 21.
- the fan is disposed proximate the inner metal surface of the housing behind the lamp circuit board.
- the air that is circulated by the fan is the air which is already in the vicinity of the lamp circuit board and this air is already hot on account of the heat dissipated by the LEDS mounted on the lamp circuit board.
- the circulation of air thus serves to cool the lamp by convection only, since it allows a constant stream of hot air to exit through the rear vent holes in the lamp housing.
- the fan is located so as to suck in a constant stream of cool air that impinges directly on the thermally conductive spacing elements that are in direct thermal contact with the hot spots of the lamp support element. This allows more efficient cooling since heat is dissipated not only by convection but also by conduction and radiation away from the hot spots.
- the housing 11 and the heat sink 14 are formed of a good thermally conductive material such as aluminum.
- the spacing elements 21 may likewise be formed of aluminum and may be formed together with the housing and the heat sink as a single unit.
- An equal number of spacing elements 21 is provided as there are LEDs, and the spacing elements 21 are spaced so that a portion of the lamp support element 17 directly behind each LED 18 is seated directly on its own spacing element 21.
- the invention also contemplates a lamp assembly comprising the lamp fixture
- each LED 18 may be mounted on the lamp support element 17 via an annular bead 26 that supports the LED while allowing its connection wires (not shown) to be passed through an aperture in the lamp support element 17 to a power supply terminal (not shown).
- Mounting clips 27 are fixed to a rear surface of the housing 12 for removably attaching the lamp fixture 10 to a support bracket (not shown) in a manner that is known per se.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
A compact light emitting diode (LED) lamp fixture including: a thermally conductive housing having a base containing a plurality of rear air vents; a heat sink depending from a rear surface of the base for dissipating heat from air passing out of the rear air vents; a thermally conductive lamp support element for supporting one or more LEDs and having an aperture for accommodating a miniature fan; at least two spacing elements on a front surface of the base for mounting the lamp support element thereon; a cover having an equal number of lenses as there are LEDs; and a plurality of vent holes in the cover for passing air sucked by the fan from outside the lamp fixture into the housing so as to strike the base whereupon the air is deflected directly on to a rear surface of the lamp support element.
Description
LED lamp fitting having an integral cooling fan
FIELD OF THE INVENTION
This invention relates to lamp fittings having an integral cooling fan.
BACKGROUND OF THE INVENTION
Light-emitting diodes (LEDS) are gradually replacing halogen lamps as the preferred choice for low power, high intensity spots. When a halogen lamp rated at 35/50W is replaced by LEDs, a lamp fitting that can accommodate several power LEDs is required in order to provide equivalent illumination. A power LED gets extremely hot at its rear surface and the heat must be dissipated in order to prevent damage to the LED as well avoid the risk of fire. When several power LEDs are mounted on a common circuit board, the heat is imparted to the circuit board, which becomes very hot and must be dissipated.
One way in which heat is dissipated is by the use of a miniature fan that is embedded within the lamp casing. For example, CN 200810218685 discloses an LED lamp fitting that comprises a thermally conductive base plate in thermal contact with a heat sink, a shell and a drive circuit board component. The base plate is fixedly connected with at least one LED chip and the heat sink is connected to the base plate for heat dissipation. The drive circuit board component is positioned inside the shell and the heat sink is positioned between a radiating fan and the base plate.
US 7,344,279 assigned to Philips Solid-State Lighting Solutions, Inc. also describes with reference to Fig. 85 a thermal facility for removing heat from a LED lighting unit. The thermal facility may be any facility for managing the flow of heat, such as a fan or similar mechanism for providing air flow to the lighting unit. A fan or other convection facility can be under control of a processor and a temperature sensor such as a thermostat to provide cooling when necessary and to remain off when not necessary. Fig. 91 shows an embodiment that employs a thermally conductive plate in combination with a micro-fan.
US20060232984 discloses air flow management of a compact fluorescent lamp fixture wherein passive and/or active lamp chamber ventilation is provided through the use of vents in the lamp chamber and/or the use of a fan to induce air flow.
Although the use of a miniature fan that is embedded within the lamp casing is known per se, in known configurations the fan is located near the base of the lamp behind the circuit board on which the lamps are mounted so as to draw heated air out of the lamp housing.
SUMMARY OF THE INVENTION
It is an object of the invention to provide an improved configuration for cooling a lamp housing wherein, instead of using a fan to ventilate hot air, a fan is used to suck in cold air directly on to the circuit board on which the lamps are mounted.
In accordance with one aspect of the invention there is provided a compact light emitting diode (LED) lamp fixture comprising:
a thermally conductive housing having a base containing a plurality of rear air vents,
a heat sink depending from a rear surface of the base for dissipating heat from air passing out of the rear air vents,
a thermally conductive lamp support element for supporting a number of spaced apart LEDs and having a substantially central aperture for accommodating a miniature fan that is mounted so as to suck in air from a front of the lamp fixture,
at least two spacing elements on a front surface of the base for mounting the lamp support element thereon so as to form a hollow chamber behind the lamp support element,
a cover having an equal number of spaced apart lenses each for propagating light emitted by a corresponding one of the LEDs, and
a plurality of vent holes in the cover for passing air sucked by the fan from outside the lamp fixture into the housing so as to strike the base whereupon the air is deflected directly on to a rear surface of the lamp support element, circulates within the hollow chamber and exits through the rear air vents.
In accordance with another aspect of the invention there is provided a method of improving the efficiency of a compact LED lamp assembly that includes a housing, a lamp support element, and a front cover, the method comprising:
providing a ventilation passage from the front cover through the lamp support to a hollow chamber at a rear of the housing so that air drawn through the front cover strikes the rear of the housing and is deflected directly on to a rear surface of the lamp support element, circulates within the hollow chamber and exits through rear air vents formed in the rear of the housing;
providing a miniature fan disposed in spatial relationship to the lamp support element and the hollow chamber so as to suck in ambient air through said ventilation passage; and
dissipating hot air exiting from the rear air vents of the housing. BRIEF DESCRIPTION OF THE DRAWINGS
In order to understand the invention and to see how it may be carried out in practice, embodiments will now be described, by way of non-limiting example only, with reference to the accompanying drawings, in which:
Fig. 1 is an exploded pictorial representation of a lamp fixture according to the invention;
Fig. 2 is an exploded pictorial representation of the lamp fixture shown in Fig. 1 showing direction of air flow during use;
Fig. 3 is an exploded rear view of the lamp fixture shown in Fig. 1;
Fig. 4 is partial section of the lamp fixture shown in Fig. 1 in its assembled state; and
Fig. 5 is partial section of the lamp fixture shown in Fig. 1 in its assembled state showing direction of air flow during use.
DETAILED DESCRIPTION OF EMBODIMENTS
In the following description of some embodiments, identical components that appear in more than one figure or that share similar functionality will be referenced by identical reference symbols.
Referring to the figures there is shown a compact LED lamp fixture 10 comprising a thermally conductive housing 11 having a base 12 containing a plurality of rear air vents 13. A heat sink 14 having a plurality of thermally conducting vanes 15 depends from a rear surface 16 of the base for dissipating heat from air passing out of the rear air vents 13.
A thermally conductive lamp support element 17 is configured for supporting a plurality of spaced apart LEDs 18 and has a substantially central aperture 19 for accommodating a miniature fan 20 that is mounted so as to suck in air from a front of the lamp fixture 10. At least two thermally conductive spacing elements 21 are provided on a front surface of the base for mounting the lamp support element thereon so as to form a hollow chamber 22 behind the lamp support element 17. Fixed to the front of the housing is a removable cover 23 having an equal number of spaced apart lenses 24 each for propagating light emitted by a corresponding one of the LEDs. A plurality of vent holes 25 are formed in the cover 23 for passing air sucked by the fan 20 from outside the lamp fixture into the housing 11 so as to strike the base 12. Air striking the base is deflected directly on to a rear surface of the lamp support element 17, circulates within the hollow chamber 22 and exits through the rear air vents 13 where it is dissipated by the heat sink 14. In circulating within the hollow chamber 22, the cool air also cools the spacing elements 21, which are preferably equal in number of the number of LEDs and are disposed directly underneath a corresponding LED. In such an arrangement, the cool air that is sucked in by the fan 20, cools the spacing elements 21 by direct impact and cools the hot spots on the lamp support element 17 via direct thermal contact with the thermally conductive spacing elements 21.
This is quite different from hitherto-proposed lamp fixtures. Thus, for example, in CN 200810218685 the fan is disposed proximate the inner metal surface of the housing behind the lamp circuit board. To this extent, the air that is circulated by the fan is the air which is already in the vicinity of the lamp circuit board and this air is already hot on account of the heat dissipated by the LEDS mounted on the lamp circuit board. The circulation of air thus serves to cool the lamp by convection only, since it allows a constant stream of hot air to exit through the rear vent holes in the lamp housing.
However, in the present invention the fan is located so as to suck in a constant stream of cool air that impinges directly on the thermally conductive spacing elements that are in direct thermal contact with the hot spots of the lamp support element. This allows more efficient cooling since heat is dissipated not only by convection but also by conduction and radiation away from the hot spots.
The housing 11 and the heat sink 14 are formed of a good thermally conductive material such as aluminum. The spacing elements 21 may likewise be formed of aluminum and may be formed together with the housing and the heat sink as a single
unit. An equal number of spacing elements 21 is provided as there are LEDs, and the spacing elements 21 are spaced so that a portion of the lamp support element 17 directly behind each LED 18 is seated directly on its own spacing element 21. By such means, local areas of the lamp support element 17 subjected to the greatest heat by virtue of their being in direct thermal contact with a LED are able to conduct the heat directly to the base. This objective would, of course, be realized by abutting the lamp support element 17 directly against the base. However, owing to the hollow chamber 22 that is formed between the base 12 and the lamp support element 17 by virtue of the spacing elements 21, which displace the lamp support element 17 from the base 12, air is able to flow behind the lamp support element 17. This greatly improves heat convection, which is even further assisted by the fan, which ensures that a constant stream of relatively cold ambient air is sucked into the hollow chamber 22 to assist in cooling the lamp support element 17 and in ensuring a constant circulation of the now-heated air through the rear vent holes.
The invention also contemplates a lamp assembly comprising the lamp fixture
10 accommodating a number of LEDs. Typically, two or more LEDs are mounted in equally angularly-spaced relationship around the lamp support assembly. However, the number of LEDs is not itself a principal feature of the invention, which resides in the combined direct cooling of the lamp support element by cool ambient air and the provision of a hollow chamber in which cool air can circulate prior to and after striking the rear surface of the lamp support element 17. The same principle could also be used with a single high power LED. Each LED 18 may be mounted on the lamp support element 17 via an annular bead 26 that supports the LED while allowing its connection wires (not shown) to be passed through an aperture in the lamp support element 17 to a power supply terminal (not shown).
Mounting clips 27 are fixed to a rear surface of the housing 12 for removably attaching the lamp fixture 10 to a support bracket (not shown) in a manner that is known per se.
Claims
1. A compact light emitting diode (LED) lamp fixture comprising:
a thermally conductive housing having a base containing a plurality of rear air vents,
a heat sink depending from a rear surface of the base for dissipating heat from air passing out of the rear air vents,
a thermally conductive lamp support element for supporting one or more LEDs and having an aperture for accommodating a miniature fan that is mounted so as to suck in air from a front of the lamp fixture,
at least two spacing elements on a front surface of the base for mounting the lamp support element thereon so as to form a hollow chamber behind the lamp support element,
a cover having an equal number of lenses as there are LEDs, each lens for propagating light emitted by a corresponding one of the LEDs, and
a plurality of vent holes in the cover for passing air sucked by the fan from outside the lamp fixture into the housing so as to strike the base whereupon the air is deflected directly on to a rear surface of the lamp support element, circulates within the hollow chamber and exits through the rear air vents.
2. The lamp fixture according to claim 1, wherein the housing and the heat sink are formed of aluminum.
3. The lamp fixture according to claim 2, wherein the spacing elements are formed of aluminum.
4. The lamp fixture according to claim 3, wherein the housing, the heat sink and the spacing elements are formed as a single unit.
5. The lamp fixture according to any one of claims 1 to 4, including a plurality of spaced apart LEDs and wherein the aperture is formed substantially centrally in the lamp support element.
6. The lamp fixture according to any one of claims 1 to 5, wherein there is an equal number of spacing elements as LEDs and each spacing element is located directly beneath a connection point on the lamp support element for a corresponding LED.
7. A lamp assembly comprising the compact light emitting diode (LED) lamp fixture according to any one of claims 1 to 6, accommodating a number of LEDs.
8. The lamp assembly according to claim 7, wherein more than two LEDs are supported in the lamp assembly.
9. A method of improving the efficiency of a compact LED lamp assembly that includes a housing, a lamp support element, and a front cover, the method comprising: providing a ventilation passage from the front cover through the lamp support to a hollow chamber at a rear of the housing so that air drawn through the front cover strikes the rear of the housing and is deflected directly on to a rear surface of the lamp support element, circulates within the hollow chamber and exits through rear air vents formed in the rear of the housing;
providing a miniature fan disposed in spatial relationship to the lamp support element and the hollow chamber so as to suck in ambient air through said ventilation passage; and
dissipating hot air exiting from the rear air vents of the housing.
10. The method according to claim 9, including:
providing a respective thermally conductive spacing element for each LED and locating each spacing element directly beneath a connection point on the lamp support element for a corresponding LED;
whereby cool air striking the spacing elements directly cools the connection points via conduction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IL20427110 | 2010-03-03 | ||
| IL204271 | 2010-03-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011107979A1 true WO2011107979A1 (en) | 2011-09-09 |
Family
ID=44541707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IL2011/000171 WO2011107979A1 (en) | 2010-03-03 | 2011-02-20 | Led lamp fitting having an integral cooling fan |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2011107979A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013057285A1 (en) | 2011-10-21 | 2013-04-25 | Lanxess Deutschland Gmbh | Catalyst compositions and their use for hydrogenation of nitrile rubber |
| WO2013057289A2 (en) | 2011-10-21 | 2013-04-25 | Lanxess Deutschland Gmbh | Catalyst compositions and their use for hydrogenation of nitrile rubber |
| ITNA20120064A1 (en) * | 2012-11-19 | 2014-05-20 | Emmegi2000 S R L | LED LAMP WITH FORCED COOLING COOLING ADAPTABLE FOR MOUNTING ON LIGHTING BODIES THAT DO NOT INCLUDE THE INSTALLATION OF LED LAMPS |
| WO2016081876A1 (en) * | 2014-11-21 | 2016-05-26 | Alter Bee Corporation | Lamp assembly with improved characteristics |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050174780A1 (en) * | 2004-02-06 | 2005-08-11 | Daejin Dmp Co., Ltd. | LED light |
| US20070279921A1 (en) * | 2006-05-30 | 2007-12-06 | Clayton Alexander | Lighting assembly having a heat dissipating housing |
| US20080253125A1 (en) * | 2007-04-11 | 2008-10-16 | Shung-Wen Kang | High power LED lighting assembly incorporated with a heat dissipation module with heat pipe |
| US20090046465A1 (en) * | 2007-08-13 | 2009-02-19 | Yasuki Hashimoto | Power LED lighting assembly |
| US20090195159A1 (en) * | 2008-02-03 | 2009-08-06 | Smith Jerry L | Led cooling system |
-
2011
- 2011-02-20 WO PCT/IL2011/000171 patent/WO2011107979A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050174780A1 (en) * | 2004-02-06 | 2005-08-11 | Daejin Dmp Co., Ltd. | LED light |
| US20070279921A1 (en) * | 2006-05-30 | 2007-12-06 | Clayton Alexander | Lighting assembly having a heat dissipating housing |
| US20080253125A1 (en) * | 2007-04-11 | 2008-10-16 | Shung-Wen Kang | High power LED lighting assembly incorporated with a heat dissipation module with heat pipe |
| US20090046465A1 (en) * | 2007-08-13 | 2009-02-19 | Yasuki Hashimoto | Power LED lighting assembly |
| US20090195159A1 (en) * | 2008-02-03 | 2009-08-06 | Smith Jerry L | Led cooling system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013057285A1 (en) | 2011-10-21 | 2013-04-25 | Lanxess Deutschland Gmbh | Catalyst compositions and their use for hydrogenation of nitrile rubber |
| WO2013057289A2 (en) | 2011-10-21 | 2013-04-25 | Lanxess Deutschland Gmbh | Catalyst compositions and their use for hydrogenation of nitrile rubber |
| ITNA20120064A1 (en) * | 2012-11-19 | 2014-05-20 | Emmegi2000 S R L | LED LAMP WITH FORCED COOLING COOLING ADAPTABLE FOR MOUNTING ON LIGHTING BODIES THAT DO NOT INCLUDE THE INSTALLATION OF LED LAMPS |
| WO2016081876A1 (en) * | 2014-11-21 | 2016-05-26 | Alter Bee Corporation | Lamp assembly with improved characteristics |
| US10274174B2 (en) | 2014-11-21 | 2019-04-30 | Andrew Michael Schneider | Lamp assembly with improved characteristics |
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