WO2013060291A1 - Led防火灯具 - Google Patents

Led防火灯具 Download PDF

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Publication number
WO2013060291A1
WO2013060291A1 PCT/CN2012/083610 CN2012083610W WO2013060291A1 WO 2013060291 A1 WO2013060291 A1 WO 2013060291A1 CN 2012083610 W CN2012083610 W CN 2012083610W WO 2013060291 A1 WO2013060291 A1 WO 2013060291A1
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WO
WIPO (PCT)
Prior art keywords
led
lamp
ring
circuit board
fireproof
Prior art date
Application number
PCT/CN2012/083610
Other languages
English (en)
French (fr)
Inventor
武良举
Original Assignee
Wu Liangju
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 Wu Liangju filed Critical Wu Liangju
Priority to EP12844489.0A priority Critical patent/EP2778509B1/en
Publication of WO2013060291A1 publication Critical patent/WO2013060291A1/zh

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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
    • 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
    • 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 utility model relates to the field of illumination, in particular to an embedded LED fireproof lamp.
  • Embedded ceiling lamps are generally used in modern interior design or home lighting, office lighting, etc. The most common application of embedded ceiling lamps is to install the openings in the ceiling. Many ceilings of the ceiling system are common. Combustible materials, such as wood and plastic, if the ceiling ceiling fixture is installed on the ceiling, the bulb inside the fixture may ignite the ceiling due to excessive temperature. In addition, when a fire occurs indoors, the current embedded luminaires, especially embedded LED luminaires, generally do not have a fireproof function, so the flame will go up through the gap between the luminaire and the gap between the luminaire and the ceiling, and the fire will burn the LED at high temperatures. The circuit board of the luminaire is more likely to ignite from the damaged luminaire and ignite other flammable objects on the ceiling.
  • some existing embedded luminaires achieve a certain fireproof effect by providing a cover 10 outside the luminaire.
  • the light source part 70, the lamp ring structure 80 and the heat sink 90 of the luminaire are all placed in the hood 10, and
  • the heat dissipation is provided with a through hole 60 above the cover 10, but the heat dissipation capability of the through hole is limited, and the heat of the lamp is accumulated in a narrow space between the cover 10 and the lamp, and the heat dissipation effect is poor, which may cause the lamp to overheat and burn out. Or igniting accumulated flammable materials such as hair and dust, and since the through hole 60 is opened in the canopy 10, the fire easily escapes from the through hole in the event of a fire, and the fire spreads, so the structure cannot be effectively fireproofed.
  • British Patent No. 2,462,155 discloses an LED lamp, please refer to FIG. 12, which includes a fireproof component 113 having a metal piece on which a light source is emitted to exit a hole through which the LED light source 115 is emitted.
  • the fireproof function is realized by setting a high-temperature resistant metal piece fireproofing component, and the LED lamp and the circuit board are disposed behind the fireproof component, thereby effectively preventing the fire from being melted and destroyed, and the LED lamp and the circuit board are in contact with the heat sink 129, and are easily passed through the heat sink. Effective heat dissipation.
  • the structure only has a fireproof function and does not have a heat insulating function, but the embedded luminaire often has a high temperature when used, and if it reaches a certain temperature, it is also easy to ignite surrounding flammable materials such as hair or debris.
  • the temperature requirements for recessed luminaires are very high, and relevant standards have been established. Lamps that have not been tested to meet product standards cannot be directly installed on the surface of flammable ceilings. For some European countries such as the United Kingdom, Denmark, etc. The requirements are not only in terms of fire performance, but also in the safety performance of the luminaire, which requires higher temperature on the surface of the luminaire.
  • 2,462,155 cannot function as a heat insulation and heat insulation, and cannot meet the requirements of low temperature of the surface of the lamp.
  • the temperature of the lamp is too high, it is easy to ignite the inflammable materials such as hair or debris around it. There is a high risk of fire.
  • the fit between the hole of the fireproof member and the light source is likely to have a gap, which does not achieve a good fireproof effect, and the fireproof member itself is also prone to cracks due to impact, high temperature, etc., and cannot be effectively fireproofed.
  • the utility model aims to provide an LED fireproof lamp with stable fireproof performance, simple structure, heat insulation, safety and reliability.
  • the utility model provides an LED fireproof lamp, which comprises an LED circuit board, an LED lens, a lamp ring with a side wall, an LED lamp on the LED circuit board, the LED circuit board, the LED lamp and the LED lens are placed on the lamp. Inside the ring, a heat sink is disposed behind the LED circuit board, and a fireproof expansion material is disposed on the front side and/or the side of the LED circuit board.
  • the fireproof and expanding material will expand to cover the surface of the LED circuit board and the gap around it, prevent the LED circuit board from being melted and destroyed, and can prevent the flame from being pulled out from the gap of the lamp, effectively Stop the fire from spreading.
  • the fireproof expansion material can also play the role of thermal insulation and heat insulation. When the lamp is used normally, the bulb heat accumulates high temperature, and the fireproof expansion material disposed in front of and/or side of the LED circuit board can effectively prevent the heat from affecting the LED circuit board. .
  • the fire-resistant expansion material can be arranged in a variety of different ways.
  • the fireproof expansion material is a plurality of fireproof expansion materials disposed in front of the LED circuit board.
  • the plurality of fireproof expansion materials are preheated and expanded to form a tight thermal insulation and fire protection.
  • Floor is a plurality of fireproof expansion materials disposed in front of the LED circuit board.
  • the fireproof expansion material is a sheet-like fireproof expansion material disposed in front of the LED circuit board, and an opening is provided at a position corresponding to the LED lamp, and a light source of the LED light can be emitted through the opening.
  • the fire-retardant material preheats and expands and fills the openings and the peripheral gaps to form a tight thermal insulation and fireproof protective layer.
  • the sheet-shaped fireproof expansion material has the characteristics of simple processing and convenient installation.
  • the fireproof expansion material is a plurality of fireproof expansion materials disposed on the side of the LED circuit board, which can effectively prevent the high temperature from affecting the circuit board from the gap on the side of the circuit board, and the fireproof expansion material is preheated in case of high temperature or fire. Expands and covers the front, side and peripheral gaps of the LED circuit board to form a tight thermal insulation and fire protection layer.
  • the fireproof expansion material is an annular fireproof expansion material disposed on a side of the LED circuit board, and the annular fireproof expansion material is also effective to prevent high temperature from affecting the circuit board from the gap on the side of the circuit board, in case of high temperature or fire,
  • the fireproof expansion material preheats and covers and covers the front, side and surrounding gaps of the LED circuit board to form a tight thermal insulation and fireproof protection layer.
  • the annular fireproof expansion material has the characteristics of simple processing and convenient installation.
  • the fireproof expansion material is disposed at the front and the side of the LED circuit board at the same time, and the form of the arrangement may be any combination of the above forms.
  • a recess can be formed around the LED lamp and the circuit board.
  • the cavity can be formed by extending the side wall of the lamp ring.
  • the fireproof expansion material can also be disposed on the inner wall of the cavity, and is also disposed in front of the LED circuit board and/or Or sideways.
  • the LED fireproof lamp further includes a face ring, and the side ring and the side wall of the lamp ring are respectively provided with matching protrusions and elastic pieces, and the face ring and the lamp ring are assembled by the protrusion and the elastic piece .
  • the protrusion overcomes the resistance of the elastic piece under the action of the external force, so that the surface ring is mounted on the light ring, and the elastic force of the elastic piece can firmly fix the surface ring to fix it. This structure enables quick installation of the face ring.
  • the quick-installing structure of the face ring and the lamp ring can also adopt another manner.
  • the side wall of the lamp ring is provided with an inwardly protruding thorn piece, and the side wall of the face ring is provided with corresponding concave pits and protruding thorns.
  • the surface of the face ring has a certain elasticity, so that the face ring is installed in the lamp ring.
  • the side end of the face ring is further provided with a guiding slope to facilitate quick installation of the face ring.
  • the face ring is provided with a spring piece.
  • the cross section of the side wall of the lamp ring is an inverted trapezoid having a small diameter at the opening of the lamp ring, and the face ring and the lamp ring pass through the
  • the shrapnel is assembled with the side wall of the inverted trapezoidal lamp ring, and the shrapnel of the assembled face ring is firmly defined in the side wall of the inverted trapezoidal lamp ring, thereby maintaining the stability of the face ring installation.
  • This structure enables quick installation of the face ring.
  • the utility model has the following advantages: In the structure of the lamp of the utility model, in the event of a fire, the fireproof and expanding material will expand to cover the surface of the LED circuit board and the surrounding gap, prevent the LED circuit board from being melted and broken, and can prevent the flame from being pulled out from the gap of the lamp, effectively preventing the fire. spread.
  • the fireproof expansion material can also play the role of thermal insulation and heat insulation. When the lamp is used normally, the bulb heat accumulates high temperature, and the fireproof expansion material disposed in front of and/or side of the LED circuit board can effectively prevent the heat from affecting the LED circuit board. .
  • Figure 1 is a cross-sectional view of the first embodiment of the LED fire protection lamp of the present invention
  • Figure 2 is a cross-sectional view of the second embodiment of the LED fire protection lamp of the present invention
  • Figure 3 is a cross-sectional view showing the third embodiment of the LED fire protection lamp of the present invention
  • 4 is an exploded perspective view of the first embodiment of the LED fire protection lamp of the present invention
  • Figure 5 is an exploded perspective view of the second embodiment of the LED fire protection lamp of the present invention
  • Figure 6 is a perspective view of the LED fire protection lamp of the present invention
  • Figure 7 is a cross-sectional view showing an embodiment in which no cavity is formed around the LED circuit board
  • Figure 8 is a cross-sectional view showing an embodiment in which a cavity is formed around an LED wiring board
  • Figure 9 is a schematic view showing an embodiment of a face ring mounting structure of the present invention
  • Figure 10 is a schematic view showing the second embodiment of the face ring mounting structure of the present invention
  • Figure 11 is a schematic view of one
  • the LED fireproof lamp of the present invention comprises an LED circuit board 1 , an LED lens 2 , a lamp ring 3 with a side wall, a face ring 7 , and an LED lamp 4 on the LED circuit board.
  • the LED circuit board 1, the LED lamp 4, the LED lens 2 are placed in the lamp ring 3, the face ring 7 is fixed on the outside of the lamp ring 3, and the heat sink 5 is disposed behind the LED circuit board 1, in the LED circuit board 1
  • a fireproof expansion material 6 is provided on the front side and/or the side, and the entire LED fireproof light fixture is mounted on the ceiling through the mounting bracket 8.
  • the fireproof and expanding material will expand to cover the surface of the LED circuit board and the gap around it, prevent the LED circuit board from being melted and destroyed, and can prevent the flame from being pulled out from the gap of the lamp, effectively Stop the fire from spreading.
  • the fireproof expansion material can also play the role of thermal insulation and heat insulation. When the lamp is used normally, the bulb heat accumulates high temperature, and the fireproof expansion material disposed in front of and/or side of the LED circuit board can effectively prevent the heat from affecting the LED circuit board. .
  • the fire-resistant expansion material can be arranged in a variety of different ways.
  • the fireproof expansion material may be provided in multiple pieces or in one piece, and may be disposed in front of or on the side of the LED circuit board.
  • the fireproof expansion material is a sheet-shaped fireproof expansion material 6 disposed in front of the LED circuit board 1, and an opening 61 is provided at a position corresponding to the LED lamp 4, and the LED lamp is provided.
  • the light source can be emitted through the opening.
  • the fire-retardant material preheats and expands and fills the openings and the peripheral gaps to form a tight thermal insulation and fireproof protective layer.
  • the sheet-shaped fireproof expansion material has the characteristics of simple processing and convenient installation.
  • the fireproof expansion material 6 is an annular fireproof expansion material disposed on the side of the LED circuit board.
  • the annular fireproof expansion material can be attached to the side wall of the light ring. Inside.
  • the installation structure of the annular fireproof expansion material can also effectively prevent the high temperature from affecting the circuit board from the gap on the side of the circuit board.
  • the fireproof expansion material preheats and covers the front, side and peripheral gaps of the LED circuit board. Form a tight thermal insulation and fire protection layer.
  • the annular fireproof expansion material has the characteristics of simple processing and convenient installation.
  • the fireproof expansion material 6 is disposed on the front side and the side of the LED circuit board 1.
  • the fireproof expansion material has been expanded at a high temperature when it reaches about 180 degrees, and is connected to form a whole cake.
  • the fire-retardant layer plays a very good role in heat insulation and fire prevention. Even if other components of the lamp start to melt at a temperature of about 600 degrees, it will not be affected.
  • the light ring can be flush with the LED circuit board, and the fireproof expansion material is disposed on the front surface of the LED circuit board.
  • the side wall of the lamp ring may be formed with a cavity around the LED lamp and the circuit board, and the fireproof expansion material may also be disposed on the inner wall of the cavity.
  • the structure is also arranged in front of and/or to the side of the LED circuit board.
  • the side ring 7 and the side wall of the lamp ring 3 are respectively provided with matching elastic pieces 71 and protrusions 31, and the face ring and the lamp ring are assembled through the protrusions and the elastic pieces. Together.
  • the protrusion overcomes the resistance of the elastic piece under the action of the external force, so that the surface ring is mounted on the light ring, and the elastic force of the elastic piece can firmly fix the surface ring to fix it. This structure enables quick installation of the face ring.
  • the quick mounting structure of the face ring 7 and the lamp ring 3 can also adopt the manner shown in FIG. 10, and the side wall of the lamp ring 3 is provided with an inwardly protruding thorn piece 32, and the face ring 7 side The wall is provided with a corresponding recess 73 which cooperates with the protruding blade 32.
  • the side wall of the face ring 7 has a certain elasticity, so that the face ring 7 can be fitted into the lamp ring 3, and in addition, the side wall of the face ring 7 A guiding ramp 74 is also provided at the end to facilitate quick installation of the face ring.
  • the face ring is provided with a spring piece.
  • the cross section of the side wall of the lamp ring is an inverted trapezoid having a small diameter at the opening of the lamp ring. The figure is not shown.
  • the ring is assembled by the elastic piece and the side wall of the inverted trapezoidal lamp ring, and the elastic piece of the assembled face ring is stably defined in the side wall of the inverted trapezoidal lamp ring, thereby maintaining the stability of the face ring installation.

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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)

Abstract

一种LED防火灯具，包括LED线路板（1）、LED透镜（2），设有侧壁的灯环（3）。 LED线路板（1）上设有LED灯（4），LED线路板（1）、LED灯（4）、LED透镜（2）置于灯环（3）内，LED线路板（1）后方设有散热器（5），在LED线路板（1）的前方和/或侧方设有防火膨胀材料（6）。在火灾发生时，防火膨胀材料会膨胀覆盖LED线路板（1）表面及其周围缝隙，防止LED线路板（1）被烧熔破坏，并能阻止火苗从灯具缝隙蹿出，有效阻止火势蔓延。

Description

LED防火灯具
【技术领域】
本实用新型涉及照明领域，尤其是指一种嵌入式的LED防火灯具。
【背景技术】
现代室内设计装修或家居照明、办公照明等场合一般会用到嵌入式天花灯具，嵌入式天花灯具最常见的应用是安装在天花板上已开设好的开孔中，吊顶系统的天花板很多都是普通的可燃材料，如木质和塑料等，如果在天花板上安装嵌入式天花灯具，灯具内的灯泡由于温度过高很可能点燃天花板。此外，当室内发生火灾时，现时的嵌入式灯具特别是嵌入式LED灯具一般不具备防火功能，那么火苗会通过灯具间隙以及灯具与天花板之间的间隙往上蹿，并且火灾高温会烧熔LED灯具的线路板，更容易从受毁坏的灯具蹿出而引燃天花板上其他易燃物件。
请参阅图11，现有一些嵌入式灯具通过在灯具外设置筒罩10来达到一定的防火效果，灯具的光源部分70、灯环结构80以及散热器90均置于筒罩10内，而为了散热，在筒罩10上方开设有通孔60，但是通孔的散热能力有限，灯具的热量积聚在筒罩10与灯具之间的狭窄空间内，散热效果很差，容易导致灯具过热而烧坏或引燃积聚的头发、灰尘等易燃物，并且由于筒罩10上开有通孔60，在发生火灾时，火苗容易从通孔蹿出，致使火势蔓延，因此该结构并不能有效防火。
英国专利2462155，公开了一种LED灯具，请参阅图12，其包括有防火部件113，该防火部件是上面开有让光源射出去孔洞的金属片，LED光源115通过该孔洞发射出去，该结构通过设置耐高温的金属片防火部件来实现防火功能，LED灯及线路板设置在防火部件后，可有效防止被火烧熔破坏，且LED灯及线路板与散热器129相接触，容易通过散热器进行有效散热。但该结构仅具备防火功能，而不具备保温隔热功能，但是嵌入式灯具在使用时温度往往很高，如果达到一定温度同样容易引燃周围的毛发或杂物等易燃物。一些国家对嵌入式灯具的温度要求非常高，制定了相关标准，标明未经测试达到产品标准的灯具不可直接安装在表面可燃的天花板上，对于有些欧洲一些国家例如英国、丹麦等，对天花灯具的要求并不单单只在于防火性能方面，而是更在于灯具的安全性能，对灯具表面温度要求更高。英国专利2462155所揭示的防火部件的结构不能起到保温隔热的功效，并不能满足灯具表面低温的要求，在灯具温度过高时则容易引燃周围的毛发或杂物等易燃物而导致火灾发生，存在极高的危险性。此外，所述防火部件的孔洞与光源之间的配合容易存有缝隙，不能达到很好的防火效果，并且防火部件本身也容易因撞击、高温等原因形成裂缝，而不能有效防火。
因此，提供一种防火性能稳定、结构简单、可保温隔热、表面温度较低、安全可靠的LED防火灯具实为必要。
【发明内容】
本实用新型的目的在于提供一种防火性能稳定、结构简单、可保温隔热、安全可靠的LED防火灯具。
为实现本实用新型目的，提供以下技术方案：
本实用新型提供一种LED防火灯具，其包括LED线路板、LED透镜，设有侧壁的灯环，LED线路板上设有LED灯，所述LED线路板、LED灯、LED透镜置于灯环内，所述LED线路板后方设有散热器，在该LED线路板的前方和/或侧方设有防火膨胀材料。采用本实用新型的灯具结构，在遇到火灾发生时，防火膨胀材料会膨胀覆盖LED线路板表面及其周围缝隙，防止LED线路板被烧熔破坏，并能阻止火苗从灯具缝隙蹿出，有效阻止火势蔓延。此外，防火膨胀材料还能起到保温隔热的作用，在平时灯具使用时，灯泡发热积聚高温，设置在LED线路板前方和/或侧方的防火膨胀材料可以有效的阻止热量影响LED线路板。
该防火膨胀材料的设置可以采用多种不同的方案。
优选的，该防火膨胀材料为设置在该LED线路板前方的多块防火膨胀材料，遇高温或发生火灾时，该多块防火膨胀材料预热膨胀并连结一起形成严密的保温隔热防火的保护层。
优选的，该防火膨胀材料为设置在该LED线路板前方的片状防火膨胀材料，其上对应LED灯的位置设有开孔，LED灯的光源可通过该开孔发射出去。遇高温或发生火灾时，该防火膨胀材料预热膨胀并填充开孔以及周边缝隙，形成严密的保温隔热防火的保护层。另外，该片状防火膨胀材料还具有加工简单、安装方便的特点。
优选的，该防火膨胀材料为设置在该LED线路板侧方的多块防火膨胀材料，可有效阻止高温从线路板侧面的缝隙影响线路板，遇高温或发生火灾时，该防火膨胀材料预热膨胀并覆盖LED线路板前方、侧方以及周边缝隙，形成严密的保温隔热防火的保护层。
优选的，该防火膨胀材料为设置在该LED线路板侧方的环形防火膨胀材料，该环形防火膨胀材料同样可有效阻止高温从线路板侧面的缝隙影响线路板，遇高温或发生火灾时，该防火膨胀材料预热膨胀并覆盖LED线路板前方、侧方以及周边缝隙，形成严密的保温隔热防火的保护层。另外，该环形防火膨胀材料还具有加工简单、安装方便的特点。
优选的，该防火膨胀材料同时设置在该LED线路板的前方和侧方，设置的形式可以采用上述形式的任意组合。
该LED灯及线路板周围可形成有凹腔，该凹腔可由灯环侧壁延而形成，该防火膨胀材料还可以设置在该凹腔的内壁，同样也是设置在LED线路板的前方和/或侧方。
进一步的，该LED防火灯具还包括有面环，该面环和灯环的侧壁上分别设有相配合的凸起和弹片，该面环和灯环通过所述凸起和弹片装配在一起。凸起在外力作用下克服弹片阻力，从而将面环安装在灯环上，而弹片的弹力可牢固的夹持面环将其固定。该结构可实现面环的快速安装。
该面环和灯环的快速安装结构还可以采用另一方式，该灯环的侧壁上设有向内突出的刺片，该面环侧壁上设有相对应的凹坑与突出的刺片相配合，该面环侧壁具有一定弹性，可使面环装入灯环内，另外，该面环的侧壁末端还设有导引斜面，方便面环的快速安装。
作为面环安装的结构还可以有其他实施方式，该面环上设有弹片，该灯环侧壁的截面是在灯环开口处口径较小的倒梯形，该面环和灯环通过所述弹片和倒梯形灯环侧壁相配合组装，装配好的面环的弹片被稳固的限定在倒梯形的灯环侧壁内，从而保持面环安装的稳定性。该结构可实现面环的快速安装。
对比现有技术，本实用新型具有以下优点：
本实用新型灯具结构，在遇到火灾发生时，防火膨胀材料会膨胀覆盖LED线路板表面及其周围缝隙，防止LED线路板被烧熔破坏，并能阻止火苗从灯具缝隙蹿出，有效阻止火势蔓延。此外，防火膨胀材料还能起到保温隔热的作用，在平时灯具使用时，灯泡发热积聚高温，设置在LED线路板前方和/或侧方的防火膨胀材料可以有效的阻止热量影响LED线路板。
【附图说明】
图1为本实用新型LED防火灯具实施例一的剖视图；
图2为本实用新型LED防火灯具实施例二的剖视图；
图3为本实用新型LED防火灯具实施例三的剖视图；
图4为本实用新型LED防火灯具实施例一的分解示意图；
图5为本实用新型LED防火灯具实施例二的分解示意图；
图6为本实用新型LED防火灯具的立体图；
图7为在LED线路板周围无形成凹腔的实施例剖视图；
图8为在LED线路板周围形成有凹腔的实施例剖视图;
图9为本实用新型的面环安装结构实施例之一示意图；
图10为本实用新型的面环安装结构实施例之二示意图；
图11为现有技术之一的示意图；
图12为现有技术之二的示意图。
【具体实施方式】
请参阅图1~图6，本实用新型LED防火灯具，其包括LED线路板1、LED透镜2，设有侧壁的灯环3、面环7，LED线路板上设有LED灯4，所述LED线路板1、LED灯4、LED透镜2置于灯环3内，面环7固定在灯环3外侧，所述LED线路板1后方设有散热器5，在该LED线路板1的前方和/或侧方设有防火膨胀材料6，整个LED防火灯具通过安装支架8安装在天花板上。采用本实用新型的灯具结构，在遇到火灾发生时，防火膨胀材料会膨胀覆盖LED线路板表面及其周围缝隙，防止LED线路板被烧熔破坏，并能阻止火苗从灯具缝隙蹿出，有效阻止火势蔓延。此外，防火膨胀材料还能起到保温隔热的作用，在平时灯具使用时，灯泡发热积聚高温，设置在LED线路板前方和/或侧方的防火膨胀材料可以有效的阻止热量影响LED线路板。
该防火膨胀材料的设置可以采用多种不同的方案。该防火膨胀材料可以设置多块或一整块，可以设置在LED线路板的前方或侧方。
如图1和图4所示的实施例一，该防火膨胀材料为设置在该LED线路板1前方的片状防火膨胀材料6，其上对应LED灯4的位置设有开孔61，LED灯的光源可通过该开孔发射出去。遇高温或发生火灾时，该防火膨胀材料预热膨胀并填充开孔以及周边缝隙，形成严密的保温隔热防火的保护层。另外，该片状防火膨胀材料还具有加工简单、安装方便的特点。
如图2和图5所示的实施例二，该防火膨胀材料6为设置在该LED线路板侧方的环形防火膨胀材料，优选的，该环形防火膨胀材料可以贴在该灯环的侧壁内侧。该环形防火膨胀材料的安装结构同样可有效阻止高温从线路板侧面的缝隙影响线路板，遇高温或发生火灾时，该防火膨胀材料预热膨胀并覆盖LED线路板前方、侧方以及周边缝隙，形成严密的保温隔热防火的保护层。另外，该环形防火膨胀材料还具有加工简单、安装方便的特点。
请参阅图3，实施例三是在LED线路板1前方和侧方均设有防火膨胀材料6，这样，该防火膨胀材料于到达180度左右的时候已高温膨胀，并连接形成整体的饼状防火层，起到很好的隔热防火作用，即使灯具其他元件在高温大概600度左右开始烧熔，也不受影响。
请参阅图7，该灯环可与LED线路板平齐，该防火膨胀材料设置在LED线路板前表面。另外，如图8所示，该灯环侧壁可在LED灯及线路板周围形成有凹腔，该防火膨胀材料还可以设置在该凹腔的内壁。所述结构同样也是设置在LED线路板的前方和/或侧方。
请参阅图9，作为更佳实施例，该面环7和灯环3的侧壁上分别设有相配合的弹片71和凸起31，该面环和灯环通过所述凸起和弹片装配在一起。凸起在外力作用下克服弹片阻力，从而将面环安装在灯环上，而弹片的弹力可牢固的夹持面环将其固定。该结构可实现面环的快速安装。
请参阅图10，该面环7和灯环3的快速安装结构还可以采用图10所示的方式，该灯环3的侧壁上设有向内突出的刺片32，该面环7侧壁上设有相对应的凹坑73与突出的刺片32相配合，该面环7侧壁具有一定弹性，可使面环7装入灯环3内，另外，该面环7的侧壁末端还设有导引斜面74，方便面环的快速安装。
作为面环安装的结构还可以有其他实施方式，该面环上设有弹片，该灯环侧壁的截面是在灯环开口处口径较小的倒梯形，图未示，该面环和灯环通过所述弹片和倒梯形灯环侧壁相配合组装，装配好的面环的弹片被稳固的限定在倒梯形的灯环侧壁内，从而保持面环安装的稳定性。
以上所述仅为本实用新型的较佳实施例，本实用新型的保护范围并不局限于此，任何基于本实用新型技术方案上的等效变换均属于本实用新型保护范围之内。

Claims (9)

  1. 一种LED防火灯具，其包括LED线路板、LED透镜，设有侧壁的灯环，LED线路板上设有LED灯，所述LED线路板、LED灯、LED透镜置于灯环内，所述LED线路板后方设有散热器，其特征在于，在该LED线路板的前方和/或侧方设有防火膨胀材料。
  2. 如权利要求1所述的LED防火灯具，其特征在于，该防火膨胀材料为设置在该LED线路板前方的多块防火膨胀材料。
  3. 如权利要求1所述的LED防火灯具，其特征在于，该防火膨胀材料为设置在该LED线路板前方的片状防火膨胀材料，其上对应LED灯的位置设有开孔。
  4. 如权利要求1所述的LED防火灯具，其特征在于，该防火膨胀材料为设置在该LED线路板侧方的多块防火膨胀材料。
  5. 如权利要求1所述的LED防火灯具，其特征在于，该防火膨胀材料为设置在该LED线路板侧方的环形防火膨胀材料。
  6. 如权利要求1所述的LED防火灯具，其特征在于，其进一步包括面环，该面环和灯环的侧壁上分别设有相配合的凸起和弹片，该面环和灯环通过所述凸起和弹片装配在一起。
  7. 如权利要求1所述的LED防火灯具，其特征在于，其进一步包括面环，该面环上设有弹片，该灯环侧壁的截面是在灯环开口处口径较小的倒梯形，该面环和灯环通过所述弹片和倒梯形灯环侧壁相配合组装。
  8. 如权利要求1所述的LED防火灯具，其特征在于，其进一步包括面环，该灯环的侧壁上设有向内突出的刺片，该面环侧壁上设有相对应的凹坑与突出的刺片相配合，该灯环和面环通过所述刺片和凹坑相配合组装。
  9. 如权利要求8所述的LED防火灯具，其特征在于，该面环的侧壁末端还设有导引斜面。
PCT/CN2012/083610 2011-10-26 2012-10-26 Led防火灯具 WO2013060291A1 (zh)

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