EP2778509B1 - Fireproof led lighting - Google Patents
Fireproof led lighting Download PDFInfo
- Publication number
- EP2778509B1 EP2778509B1 EP12844489.0A EP12844489A EP2778509B1 EP 2778509 B1 EP2778509 B1 EP 2778509B1 EP 12844489 A EP12844489 A EP 12844489A EP 2778509 B1 EP2778509 B1 EP 2778509B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- led
- fireproof
- circuit board
- lamp
- ring
- 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.)
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Links
- 238000009413 insulation Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 9
- 238000003754 machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000003116 impacting effect Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005034 decoration Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004079 fireproofing Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
Classifications
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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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/12—Flameproof or explosion-proof arrangements
- F21V25/125—Flameproof or explosion-proof arrangements using intumescent material, i.e. using materials which swells up as a result of heat exposure
-
- 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
- F21S8/02—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters
- F21S8/026—Lighting devices intended for fixed installation of recess-mounted type, e.g. downlighters intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
-
- 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
-
- 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
- F21V25/00—Safety devices structurally associated with lighting devices
- F21V25/12—Flameproof or explosion-proof arrangements
-
- 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
- F21V29/70—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
- 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
- F21V17/16—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 by deformation of parts; Snap action mounting
- F21V17/164—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 by deformation of parts; Snap action mounting the parts being subjected to bending, e.g. snap joints
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- 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 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 present invention relates generally to the lighting field, and specifically to an embedded fireproof LED lamp.
- An embedded ceiling lamp is generally used in modern interior decoration, household lighting or office lighting, and the most common application of the embedded ceiling lamp is fitted in a through hole in a ceiling.
- most of ceilings of a ceiling system are made of ordinary combustible materials, such as wood, plastics, or the like, when a ceiling is fitted with an embedded ceiling lamp, the ceiling will probably catch alight once the temperature of a lamp bulb in the lamp gets too high.
- the existing embedded lamp especially the existing embedded LED lamp
- the existing embedded LED lamp generally does not have the function of fireproof
- a flame will go up from the gap in the lamp and the gap between the lamp and the ceiling, and the circuit board of the LED lamp will be burnt out by a high temperature that the flame is easier to go out of the burnt lamp to ignite other combustible materials on the ceiling.
- a lamp shade 10 is provide outside the lamp to achieve fireproof effect, the light source 70, the lamp ring 80 and the radiator 90 of the lamp are placed in the lamp shade 10, and a through hole 60 is provided in the top of the lamp shade 10 for heat dissipating.
- the through hole has a limited ability for heat dissipating such that the heat of the lamp accumulates in a confined space between the lamp shade 10 and the lamp, which leads to a bad heat dissipation effect that the lamp may be burnt or accumulated hair, dust or other combustible materials may be ignited due to overheating.
- the lamp shade 10 is provided with a through hole 60 that when there is a fire it is easy for a flame go out of the through hole to make fire spread. Therefore this structure cannot effectively prevent fire.
- British Patent No. 2462155 discloses a LED lamp, referring to Figure 12 , including a fireproof component 113 that is a sheet metal provided with a hole for sending out the light from which LED light source can shine out.
- a fireproof component 113 that is a sheet metal provided with a hole for sending out the light from which LED light source can shine out.
- Such structure achieve the function of fireproof by providing a high temperature resistance sheet metal, the LED lamp and circuit board are provided behind the fireproof component to avoid being burnt effectively, and the LED lamp and circuit board contact with the radiator 129 to allow effective heat dissipation by the radiator.
- such structure only has the function of fireproof, and has no function of thermal insulation, while the embedded lamp will reach high temperature in use that surrounding hair, clutter or other combustible materials is easy to be ignited to cause a fire when the temperature is too high, so there is a high risk.
- the alignment of the hole of the fireproof component and the light source is easy to have a gap, which will yield no positive fireproof
- Document WO 2011/053349 A1 relates to an LED apparatus and method for accurate lens alignment.
- a principal object of the present invention is to provide a fireproof LED lamp with stable fireproof performance, simple structure, thermal insulation and security as stated in the independent claims.
- a fireproof LED lamp including a LED circuit board, a LED lens and a lamp ring provided with a side wall, wherein the LED circuit board is provided with a LED light, the LED circuit board, LED light and LED lens are placed in the lamp ring, a radiator is provided behind the LED circuit board, and a fireproof expansion unit made of a fireproof expansion material is provided on the front and/or on the side of the LED circuit board.
- the fireproof expansion unit will expands to cover the surface of the LED circuit board and gaps around the LED circuit board in case of fire to prevent the LED circuit board being burnt, and to prevent a flame go out of the gaps of the lamp to
- the fireproof expansion unit still has a function of heat insulation that in general use the fireproof expansion unit provided on the front and/or on the side of the LED circuit board can effectively prevent the heat from the lamp bulb from impacting the LED circuit board.
- the fireproof expansion unit can be composed by a plurality of fireproof expansion blocks provided on the front of the LED circuit board.
- the plurality of fireproof expansion blocks will expend with heat and be connected with each other to form a tight protection layer for thermal insulation and fireproof.
- the fireproof expansion unit can be a sheet-like fireproof expansion unit provided on the front of the LED circuit board, on which an opening is arranged corresponding to the LED light, such that light of the LED lamp can transmit through the opening.
- the sheet-like fireproof expansion unit will expend with heat and fill the opening and surrounding gaps to form a tight protection layer for thermal insulation and fireproof.
- the sheet-like fireproof expansion unit is simple for machining and easy to assemble.
- the fireproof expansion unit can be composed by a plurality of fireproof expansion blocks provided on the side of the LED circuit board, which can effectively prevent the LED circuit board from being impacted by a high temperature from a gap on the side of the LED circuit board.
- the plurality of fireproof expansion blocks will expend with heat and cover the front and side parts of the LED circuit board and surrounding gaps to form a tight protection layer for thermal insulation and fireproof.
- the fireproof expansion unit can be an annular fireproof expansion unit provided on the side of the LED circuit board, which can effectively prevent the LED circuit board from being impacted by a high temperature from a gap on the side of the LED circuit board.
- the fireproof expansion unit will expend with heat and cover the front and side parts of the LED circuit board and surrounding gaps to form a tight protection layer for thermal insulation and fireproof.
- the annular fireproof expansion unit is simple for machining and easy to assemble.
- the fireproof expansion unit can be arranged both on the front and on the side of the LED circuit board, and its arrangement can be any combination of the above arrangements.
- a cavity may be formed around the LED light and circuit board, which can extend from the side wall of the lamp ring.
- the fireproof expansion unit also can be arranged on the inner wall of the cavity, and also arranged on the front and/or on the side of the LED circuit board.
- the fireproof LED lamp also includes a face ring, the side wall of the face ring and the side wall of the lamp ring are respectively provided with a bulge and a clip which are matched, and the face ring and the lamp ring are assembled together by the a bulge and clip.
- the bulge can overcome the resistance of the clip under external force to assemble the face ring on the lamp ring, while the clip can hold the face ring firmly by its elasticity to fasten the face ring on the lamp ring.
- Such mechanism can achieve rapid assembly of the face ring.
- Another arrangement can be used for the rapid assembly mechanism for the face ring and the lamp ring, where the side wall of the lamp ring is provided with a lug that projects inward, accordingly a pit matched with the lug is provided on the side wall of the face ring, and the side wall of the face ring has certain flexibility to make the face ring assembled in the lamp ring.
- a guiding slope is provided on the end of the side wall of the face ring to facilitate the face ring rapid assembly.
- a further arrangement can be used for the assembly mechanism for the face ring, where a clip is provided on the face ring, the section of the side wall of the lamp ring is an inverted trapezoid of which the side at the opening of the lamp ring is smaller.
- the face ring and the lamp ring can be assembled by the matching of the clip and the inverted trapezoid side wall of the lamp ring.
- the clip of the assembled face ring is steadily fixed in the inverted trapezoid side wall of the lamp ring, so as to keep the stability of the assembly of the face ring.
- Such mechanism can achieve rapid assembly of the face ring.
- the present invention has the following advantages:
- the fireproof LED lamp of the present invention includes a LED circuit board 1, a LED lens 2, a lamp ring 3 provided with a first side wall, and a face ring 7 provided with a second side wall, wherein the LED circuit board is provided with a LED light 4, the LED circuit board 1, LED light 4 and LED lens 2 are placed in the lamp ring 3, the face ring 7 is placed on the outside of the lamp ring 3, a radiator 5 is provided behind the LED circuit board 1, and a fireproof expansion unit 6 made of a fireproof expansion material is provided on the front and/or on the side of the LED circuit board 1, and the whole fireproof LED lamp is mounted on a ceiling by a mounting bracket 8.
- the fireproof expansion unit will expands to cover the surface of the LED circuit board and gaps around the LED circuit board in case of fire to prevent the LED circuit board being burnt, and to prevent a flame go out of the gaps of the lamp to effectively prevent the spread of fire.
- the fireproof expansion unit still has a function of heat insulation that in general use the fireproof expansion unit provided on the front and/or on the side of the LED circuit board can effectively prevent the heat from the lamp bulb from impacting the LED circuit board.
- the fireproof expansion unit can be arranged as one or more fireproof expansion blocks, and can be arranged on the front or on the side of the LED circuit board.
- the fireproof expansion unit is a sheet-like fireproof expansion unit 6 provided on the front of the LED circuit board 1, on which an opening 61 is arranged corresponding to the LED light 4, such that light of the LED light can transmit through the opening.
- the sheet-like fireproof expansion unit will expend with heat and fill the opening and surrounding gaps to form a tight protection layer for thermal insulation and fireproof.
- the sheet-like fireproof expansion unit is simple for machining and easy to assemble.
- the fireproof expansion unit is an annular fireproof expansion unit provided on the side of the LED circuit board, preferably, the fireproof expansion unit can be attached on the inside of the side wall of the lamp ring.
- the fireproof expansion unit can also effectively prevent the LED circuit board from being impacted by a high temperature from a gap on the side of the LED circuit board.
- the fireproof expansion unit will expend with heat and cover the front and side parts of the LED circuit board and surrounding gaps to form a tight protection layer for thermal insulation and fireproof.
- the annular fireproof expansion unit is simple for machining and easy to assemble.
- the fireproof expansion unit is arranged both on the front and on the side of the LED circuit board, such that the fireproof expansion unit will has expended with heat at 180 degrees Celsius and form an integral wafer-like fire protection layer which has good performance in heat insulation and fire proofing that even the lamp and other component is burnt at about 600 degrees Celsius the fire protection layer will never be affected.
- the lamp ring can be flush with the LED circuit board, and the fireproof expansion unit is arranged on the front surface of the LED circuit board.
- a cavity may be formed around the LED light and circuit board, and the fireproof expansion unit also can be arranged on the inner wall of the cavity. The cavity is also arranged on the front and/or on the side of the LED circuit board.
- the side wall of the face ring 7 and the side wall of the lamp ring 3 are respectively provided with a clip 71 and a bulge 31 which are matched, and the face ring and the lamp ring are assembled together by the a bulge and clip.
- the bulge can overcome the resistance of the clip under external force to assemble the face ring on the lamp ring, while the clip can hold the face ring firmly by its elasticity to fasten the face ring on the lamp ring.
- Such mechanism can achieve rapid assembly of the face ring.
- FIG. 7 Another arrangement as shown in Figure 10 can be used for the rapid assembly mechanism for the face ring and the lamp ring, where the side wall of the lamp ring 3 is provided with a lug 32 that projects inward, accordingly a pit 73 matched with the lug 32 is provided on the side wall of the face ring 7, and the side wall of the face ring 7 has certain flexibility to make the face ring 7 assembled in the lamp ring 3.
- a guiding slope 74 is provided on the end of the side wall of the face ring 7 to facilitate the face ring rapid assembly.
- a further arrangement can be used for the assembly mechanism for the face ring (not shown), where a clip is provided on the face ring, the section of the side wall of the lamp ring is an inverted trapezoid of which the side at the opening of the lamp ring is smaller.
- the face ring and the lamp ring can be assembled by the matching of the clip and the inverted trapezoid side wall of the lamp ring.
- the clip of the assembled face ring is steadily fixed in the inverted trapezoid side wall of the lamp ring, so as to keep the stability of the assembly of the face ring.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Fire Alarms (AREA)
Description
- The present invention relates generally to the lighting field, and specifically to an embedded fireproof LED lamp.
- An embedded ceiling lamp is generally used in modern interior decoration, household lighting or office lighting, and the most common application of the embedded ceiling lamp is fitted in a through hole in a ceiling. However, most of ceilings of a ceiling system are made of ordinary combustible materials, such as wood, plastics, or the like, when a ceiling is fitted with an embedded ceiling lamp, the ceiling will probably catch alight once the temperature of a lamp bulb in the lamp gets too high. Moreover, when a fire occurs in the room, as the existing embedded lamp, especially the existing embedded LED lamp, generally does not have the function of fireproof, a flame will go up from the gap in the lamp and the gap between the lamp and the ceiling, and the circuit board of the LED lamp will be burnt out by a high temperature that the flame is easier to go out of the burnt lamp to ignite other combustible materials on the ceiling.
- See
Figure 11 , in some embedded lamps, alamp shade 10 is provide outside the lamp to achieve fireproof effect, thelight source 70, thelamp ring 80 and theradiator 90 of the lamp are placed in thelamp shade 10, and a throughhole 60 is provided in the top of thelamp shade 10 for heat dissipating. However, the through hole has a limited ability for heat dissipating such that the heat of the lamp accumulates in a confined space between thelamp shade 10 and the lamp, which leads to a bad heat dissipation effect that the lamp may be burnt or accumulated hair, dust or other combustible materials may be ignited due to overheating. In addition, thelamp shade 10 is provided with athrough hole 60 that when there is a fire it is easy for a flame go out of the through hole to make fire spread. Therefore this structure cannot effectively prevent fire. - British Patent No.
2462155 Figure 12 , including afireproof component 113 that is a sheet metal provided with a hole for sending out the light from which LED light source can shine out. Such structure achieve the function of fireproof by providing a high temperature resistance sheet metal, the LED lamp and circuit board are provided behind the fireproof component to avoid being burnt effectively, and the LED lamp and circuit board contact with theradiator 129 to allow effective heat dissipation by the radiator. However, such structure only has the function of fireproof, and has no function of thermal insulation, while the embedded lamp will reach high temperature in use that surrounding hair, clutter or other combustible materials is easy to be ignited to cause a fire when the temperature is too high, so there is a high risk. In addition, the alignment of the hole of the fireproof component and the light source is easy to have a gap, which will yield no positive fireproof effect, and the fireproof component is easy to form a crack by impact, high temperature or others, which leads to the failure of fireproof. - Thus, it is necessary to provide a fireproof LED lamp with stable fireproof performance, simple structure, thermal insulation, lower temperature on surface and security.
- Document
WO 2011/053349 A1 relates to an LED apparatus and method for accurate lens alignment. - Further relevant prior art solutions are found in documents
US 2010/214790 A1 ,EP 1 607 675 A1GB 2 421 070 AGB 2 436 139 AGB 2 459 538 A - In view of the above, a principal object of the present invention is to provide a fireproof LED lamp with stable fireproof performance, simple structure, thermal insulation and security as stated in the independent claims.
- In order to achieve the purpose of the present invention, according to a preferred embodiment of the present invention, the following solution is presented.
- A fireproof LED lamp is provided by the present invention, including a LED circuit board, a LED lens and a lamp ring provided with a side wall, wherein the LED circuit board is provided with a LED light, the LED circuit board, LED light and LED lens are placed in the lamp ring, a radiator is provided behind the LED circuit board, and a fireproof expansion unit made of a fireproof expansion material is provided on the front and/or on the side of the LED circuit board. Using the lamp structure of the present invention, the fireproof expansion unit will expands to cover the surface of the LED circuit board and gaps around the LED circuit board in case of fire to prevent the LED circuit board being burnt, and to prevent a flame go out of the gaps of the lamp to
- effectively prevent the spread of fire. Moreover, the fireproof expansion unit still has a function of heat insulation that in general use the fireproof expansion unit provided on the front and/or on the side of the LED circuit board can effectively prevent the heat from the lamp bulb from impacting the LED circuit board.
- Many different arrangements can be used for the fireproof expansion unit.
- Preferably, the fireproof expansion unit can be composed by a plurality of fireproof expansion blocks provided on the front of the LED circuit board. In the case of high temperature or fire, the plurality of fireproof expansion blocks will expend with heat and be connected with each other to form a tight protection layer for thermal insulation and fireproof.
- Preferably, the fireproof expansion unit can be a sheet-like fireproof expansion unit provided on the front of the LED circuit board, on which an opening is arranged corresponding to the LED light, such that light of the LED lamp can transmit through the opening. In the case of high temperature or fire, the sheet-like fireproof expansion unit will expend with heat and fill the opening and surrounding gaps to form a tight protection layer for thermal insulation and fireproof. In addition, the sheet-like fireproof expansion unit is simple for machining and easy to assemble.
- Preferably, the fireproof expansion unit can be composed by a plurality of fireproof expansion blocks provided on the side of the LED circuit board, which can effectively prevent the LED circuit board from being impacted by a high temperature from a gap on the side of the LED circuit board. In the case of high temperature or fire, the plurality of fireproof expansion blocks will expend with heat and cover the front and side parts of the LED circuit board and surrounding gaps to form a tight protection layer for thermal insulation and fireproof.
- Preferably, the fireproof expansion unit can be an annular fireproof expansion unit provided on the side of the LED circuit board, which can effectively prevent the LED circuit board from being impacted by a high temperature from a gap on the side of the LED circuit board. In the case of high temperature or fire, the fireproof expansion unit will expend with heat and cover the front and side parts of the LED circuit board and surrounding gaps to form a tight protection layer for thermal insulation and fireproof. In addition, the annular fireproof expansion unit is simple for machining and easy to assemble.
- Preferably, the fireproof expansion unit can be arranged both on the front and on the side of the LED circuit board, and its arrangement can be any combination of the above arrangements.
- A cavity may be formed around the LED light and circuit board, which can extend from the side wall of the lamp ring. The fireproof expansion unit also can be arranged on the inner wall of the cavity, and also arranged on the front and/or on the side of the LED circuit board.
- Further, the fireproof LED lamp also includes a face ring, the side wall of the face ring and the side wall of the lamp ring are respectively provided with a bulge and a clip which are matched, and the face ring and the lamp ring are assembled together by the a bulge and clip. The bulge can overcome the resistance of the clip under external force to assemble the face ring on the lamp ring, while the clip can hold the face ring firmly by its elasticity to fasten the face ring on the lamp ring. Such mechanism can achieve rapid assembly of the face ring.
- Another arrangement can be used for the rapid assembly mechanism for the face ring and the lamp ring, where the side wall of the lamp ring is provided with a lug that projects inward, accordingly a pit matched with the lug is provided on the side wall of the face ring, and the side wall of the face ring has certain flexibility to make the face ring assembled in the lamp ring. In addition, a guiding slope is provided on the end of the side wall of the face ring to facilitate the face ring rapid assembly.
- A further arrangement can be used for the assembly mechanism for the face ring, where a clip is provided on the face ring, the section of the side wall of the lamp ring is an inverted trapezoid of which the side at the opening of the lamp ring is smaller. The face ring and the lamp ring can be assembled by the matching of the clip and the inverted trapezoid side wall of the lamp ring. The clip of the assembled face ring is steadily fixed in the inverted trapezoid side wall of the lamp ring, so as to keep the stability of the assembly of the face ring. Such mechanism can achieve rapid assembly of the face ring.
- Compared with prior arts, the present invention has the following advantages:
- In the case of fire, for the LED lamp of the present invention, the fireproof expansion unit will expands to cover the surface of the LED circuit board and gaps around the LED circuit board to prevent the LED circuit board being burnt, and to prevent a flame go out of the gaps of the lamp to effectively prevent the spread of fire. Moreover, the fireproof expansion unit still has a function of heat insulation that in general use the fireproof expansion unit provided on the front and/or on the side of the LED circuit board can effectively prevent the heat from the lamp bulb from impacting the LED circuit board.
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Figure 1 shows a section view of a fireproof LED lamp according to a first embodiment of the present invention. -
Figure 2 shows a section view of a fireproof LED lamp according to a second embodiment of the present invention. -
Figure 3 shows a section view of a fireproof LED lamp according to a third embodiment of the present invention. -
Figure 4 shows an exploded view of a fireproof LED lamp according to a first embodiment of the present invention. -
Figure 5 shows an exploded view of a fireproof LED lamp according to a second embodiment of the present invention. -
Figure 6 shows a space diagram of a fireproof LED lamp according to one embodiment of the present invention. -
Figure 7 shows a section view of no cavity formed around the LED circuit board. -
Figure 8 shows a section view of a cavity formed around the LED circuit board. -
Figure 9 shows a schematic view of an assembly structure of for a face ring according to one embodiment of the present invention. -
Figure 10 shows a schematic view of an assembly structure of for a face ring according to another embodiment of the present invention. -
Figure 11 shows a schematic view of a lamp according to one prior art. -
Figure 12 shows a schematic view of a lamp according to another prior art. - Please refer to
Figures 1-6 . The fireproof LED lamp of the present invention includes aLED circuit board 1, aLED lens 2, alamp ring 3 provided with a first side wall, and aface ring 7 provided with a second side wall, wherein the LED circuit board is provided with a LED light 4, theLED circuit board 1, LED light 4 andLED lens 2 are placed in thelamp ring 3, theface ring 7 is placed on the outside of thelamp ring 3, aradiator 5 is provided behind theLED circuit board 1, and afireproof expansion unit 6 made of a fireproof expansion material is provided on the front and/or on the side of theLED circuit board 1, and the whole fireproof LED lamp is mounted on a ceiling by a mountingbracket 8. Using the lamp structure of the present invention, the fireproof expansion unit will expands to cover the surface of the LED circuit board and gaps around the LED circuit board in case of fire to prevent the LED circuit board being burnt, and to prevent a flame go out of the gaps of the lamp to effectively prevent the spread of fire. Moreover, the fireproof expansion unit still has a function of heat insulation that in general use the fireproof expansion unit provided on the front and/or on the side of the LED circuit board can effectively prevent the heat from the lamp bulb from impacting the LED circuit board. - Many different arrangements can be used for the fireproof expansion unit. The fireproof expansion unit can be arranged as one or more fireproof expansion blocks, and can be arranged on the front or on the side of the LED circuit board.
- As shown in
Figures 1 and4 , in the first embodiment, the fireproof expansion unit is a sheet-likefireproof expansion unit 6 provided on the front of theLED circuit board 1, on which anopening 61 is arranged corresponding to the LED light 4, such that light of the LED light can transmit through the opening. In the case of high temperature or fire, the sheet-like fireproof expansion unit will expend with heat and fill the opening and surrounding gaps to form a tight protection layer for thermal insulation and fireproof. In addition, the sheet-like fireproof expansion unit is simple for machining and easy to assemble. - As shown in
Figures 2 and5 , in the second embodiment, the fireproof expansion unit is an annular fireproof expansion unit provided on the side of the LED circuit board, preferably, the fireproof expansion unit can be attached on the inside of the side wall of the lamp ring. Such the fireproof expansion unit can also effectively prevent the LED circuit board from being impacted by a high temperature from a gap on the side of the LED circuit board. In the case of high temperature or fire, the fireproof expansion unit will expend with heat and cover the front and side parts of the LED circuit board and surrounding gaps to form a tight protection layer for thermal insulation and fireproof. In addition, the annular fireproof expansion unit is simple for machining and easy to assemble. - Please refer to
Figure 3 . In the third embodiment, the fireproof expansion unit is arranged both on the front and on the side of the LED circuit board, such that the fireproof expansion unit will has expended with heat at 180 degrees Celsius and form an integral wafer-like fire protection layer which has good performance in heat insulation and fire proofing that even the lamp and other component is burnt at about 600 degrees Celsius the fire protection layer will never be affected. - Please refer to
Figure 7 . The lamp ring can be flush with the LED circuit board, and the fireproof expansion unit is arranged on the front surface of the LED circuit board. In addition, as shown inFigure 8 , a cavity may be formed around the LED light and circuit board, and the fireproof expansion unit also can be arranged on the inner wall of the cavity. The cavity is also arranged on the front and/or on the side of the LED circuit board. - Please refer to
Figure 7 . As a preferable embodiment, the side wall of theface ring 7 and the side wall of thelamp ring 3 are respectively provided with aclip 71 and abulge 31 which are matched, and the face ring and the lamp ring are assembled together by the a bulge and clip. The bulge can overcome the resistance of the clip under external force to assemble the face ring on the lamp ring, while the clip can hold the face ring firmly by its elasticity to fasten the face ring on the lamp ring. Such mechanism can achieve rapid assembly of the face ring. - Please refer to
Figure 7 . Another arrangement as shown inFigure 10 can be used for the rapid assembly mechanism for the face ring and the lamp ring, where the side wall of thelamp ring 3 is provided with alug 32 that projects inward, accordingly apit 73 matched with thelug 32 is provided on the side wall of theface ring 7, and the side wall of theface ring 7 has certain flexibility to make theface ring 7 assembled in thelamp ring 3. In addition, a guidingslope 74 is provided on the end of the side wall of theface ring 7 to facilitate the face ring rapid assembly. - A further arrangement can be used for the assembly mechanism for the face ring (not shown), where a clip is provided on the face ring, the section of the side wall of the lamp ring is an inverted trapezoid of which the side at the opening of the lamp ring is smaller. The face ring and the lamp ring can be assembled by the matching of the clip and the inverted trapezoid side wall of the lamp ring. The clip of the assembled face ring is steadily fixed in the inverted trapezoid side wall of the lamp ring, so as to keep the stability of the assembly of the face ring.
- The described embodiments of the present invention are presented for the purpose of illustration, not limitation. Those skilled in the art will recognize that the present invention can be practiced with modification within the scope of the claims.
Claims (8)
- A fireproof LED lamp, comprising a LED circuit board (1), a LED lens (2) and a lamp ring (3) provided with a side wall, wherein the LED circuit board (1) is provided with a LED light (4); the LED circuit board, the LED light and the LED lens are placed in the lamp ring (3), a radiator (5) is provided behind the LED circuit board (1), wherein a fireproof expansion unit (6) made of a fireproof expansion material is provided on the front and the side of the LED circuit board (1) and is configured to expand with heat and cover front and side parts of the LED circuit board (1) and surrounding gaps to form a tight protection layer for thermal insulation and fireproof in the case of high temperature or fire;
wherein the fireproof LED lamp further comprises a face ring (7), wherein the side wall of the face ring (7) and the side wall of the lamp ring (3) are respectively provided with a bulge (31) and a clip (71) which are matched to each other, and the face ring and the lamp ring (3) are assembled together by the bulge and the clip. - The fireproof LED lamp of claim 1, characterized in that the fireproof expansion unit (6) comprises a plurality of fireproof expansion blocks provided on the front of the LED circuit board (1).
- The fireproof LED lamp of claim 1, characterized in that the fireproof expansion unit (6) comprises a sheet-like fireproof expansion unit provided on the front of the LED circuit board (1), in which an opening (61) is provided corresponding to the LED light.
- The fireproof LED lamp of claim 1, characterized in that the fireproof expansion unit (6) comprises a plurality of fireproof expansion blocks provided on the side of the LED circuit board (1).
- The fireproof LED lamp of claim 1, characterized in that the fireproof expansion unit (6) comprises an annular fireproof expansion unit provided on the side of the LED circuit board (1).
- A fireproof LED lamp, comprising a LED circuit board (1), a LED lens (2) and a lamp ring (3) provided with a side wall, wherein the LED circuit board (1) is provided with a LED light (4); the LED circuit board, the LED light and the LED lens are placed in the lamp ring (3), a radiator (5) is provided behind the LED circuit board (1), wherein a fireproof expansion unit (6) made of a fireproof expansion material is provided on the front and the side of the LED circuit board (1) and is configured to expand with heat and cover front and side parts of the LED circuit board (1) and surrounding gaps to form a tight protection layer for thermal insulation and fireproof in the case of high temperature or fire;
wherein the fireproof LED lamp further comprises a face ring (7), wherein a clip (71) is provided on the face ring, the section of the side wall of the lamp ring (3) is an inverted trapezoid of which the side at the opening of the lamp ring is smaller, and the face ring and the lamp ring are assembled by matching the clip (71) to the inverted trapezoid side wall of the lamp ring. - A fireproof LED lamp, comprising a LED circuit board (1), a LED lens (2) and a lamp ring (3) provided with a side wall, wherein the LED circuit board (1) is provided with a LED light (4); the LED circuit board, the LED light and the LED lens are placed in the lamp ring (3), a radiator (5) is provided behind the LED circuit board (1), wherein a fireproof expansion unit (6) made of a fireproof expansion material is provided on the front and the side of the LED circuit board (1) and is configured to expand with heat and cover front and side parts of the LED circuit board (1) and surrounding gaps to form a tight protection layer for thermal insulation and fireproof in the case of high temperature or fire;
wherein the fireproof LED lamp further comprises a face ring (7), wherein the side wall of the lamp ring (3) is provided with a lug (32) that projects inward, accordingly a pit (73) matched with the lug is provided on the side wall of the face ring, and the face ring (7) and the lamp ring are assembled by the matching of the lug and the pit. - The fireproof LED lamp of claim 7, characterized in that a guiding slope (74) is provided on the end of the side wall of the face ring (7).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011204134488U CN202284754U (en) | 2011-10-26 | 2011-10-26 | Light emitting diode (LED) fireproof lamp |
PCT/CN2012/083610 WO2013060291A1 (en) | 2011-10-26 | 2012-10-26 | Fireproof led lighting |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2778509A1 EP2778509A1 (en) | 2014-09-17 |
EP2778509A4 EP2778509A4 (en) | 2015-04-22 |
EP2778509B1 true EP2778509B1 (en) | 2017-03-22 |
Family
ID=46296275
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12844489.0A Active EP2778509B1 (en) | 2011-10-26 | 2012-10-26 | Fireproof led lighting |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP2778509B1 (en) |
CN (1) | CN202284754U (en) |
WO (1) | WO2013060291A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11071924B2 (en) | 2017-04-11 | 2021-07-27 | Donald T. Scholz | Theatrical lightning simulator |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN202284754U (en) * | 2011-10-26 | 2012-06-27 | 武良举 | Light emitting diode (LED) fireproof lamp |
CN103363408B (en) * | 2013-04-26 | 2016-08-10 | 佛山市威得士灯饰电器有限公司 | Ceiling lamp |
GB2517064B (en) * | 2013-06-14 | 2020-04-15 | Aurora Ltd | Improved lighting unit |
GB201316817D0 (en) * | 2013-09-23 | 2013-11-06 | Aurora Ltd | Improvements in and relating to a lighting unit |
US9890944B2 (en) * | 2014-06-09 | 2018-02-13 | Lextar Electronics Corporation | Recessed light fixture |
GB2532920A (en) * | 2014-10-29 | 2016-06-08 | Savvy Switches Ltd | A universal fitting for mounting components |
CN109539057A (en) * | 2019-01-07 | 2019-03-29 | 广东恒润光电有限公司 | A kind of embedded fireproof ceiling lamp |
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GB2459538A (en) * | 2008-05-01 | 2009-11-04 | Photonstar Led Ltd | Fire rated aluminium luminaire with heat sink |
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US20020109989A1 (en) * | 2000-12-11 | 2002-08-15 | Te-Chun Chuang | Solid joint structure of christmas lamp |
GB0413655D0 (en) * | 2004-06-18 | 2004-07-21 | Scolmore Int Ltd | Heat resistant casing |
GB2421070B (en) * | 2005-01-27 | 2007-01-10 | Rd Europe Ltd | Fire-resistant cover for lighting fitting |
CN2771649Y (en) * | 2005-03-16 | 2006-04-12 | 余如意 | Fire-retardant lamp |
TWM296340U (en) * | 2006-03-17 | 2006-08-21 | Giantech Ind Co Ltd | Embedded lamp |
US8333490B2 (en) * | 2007-07-05 | 2012-12-18 | Liangju Wu | Fireproof light fixture |
GB2461935C (en) | 2008-11-12 | 2012-03-28 | Collingwood Lighting Ltd | Lighting unit. |
US8348461B2 (en) * | 2009-10-30 | 2013-01-08 | Ruud Lighting, Inc. | LED apparatus and method for accurate lens alignment |
CN201836676U (en) * | 2010-08-26 | 2011-05-18 | 深圳北森科技有限公司 | LED lamp with down light shaped structure |
CN201983012U (en) * | 2010-12-30 | 2011-09-21 | 周家祥 | Novel LED down lamp |
CN102162586A (en) * | 2010-12-31 | 2011-08-24 | 范金晶 | Lamp with inclination angle |
CN202284754U (en) * | 2011-10-26 | 2012-06-27 | 武良举 | Light emitting diode (LED) fireproof lamp |
-
2011
- 2011-10-26 CN CN2011204134488U patent/CN202284754U/en not_active Expired - Lifetime
-
2012
- 2012-10-26 EP EP12844489.0A patent/EP2778509B1/en active Active
- 2012-10-26 WO PCT/CN2012/083610 patent/WO2013060291A1/en active Application Filing
Patent Citations (1)
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GB2459538A (en) * | 2008-05-01 | 2009-11-04 | Photonstar Led Ltd | Fire rated aluminium luminaire with heat sink |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11071924B2 (en) | 2017-04-11 | 2021-07-27 | Donald T. Scholz | Theatrical lightning simulator |
Also Published As
Publication number | Publication date |
---|---|
EP2778509A1 (en) | 2014-09-17 |
WO2013060291A1 (en) | 2013-05-02 |
CN202284754U (en) | 2012-06-27 |
EP2778509A4 (en) | 2015-04-22 |
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