CN213453200U

CN213453200U - Fire-proof down lamp

Info

Publication number: CN213453200U
Application number: CN202022144592.8U
Authority: CN
Inventors: 蔡丽贤; 温晓良; 王林华
Original assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Current assignee: Zhangzhou Lidaxin Optoelectronic Technology Co ltd
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2021-06-15
Anticipated expiration: 2030-09-25

Abstract

The utility model provides a fire prevention down lamp, which belongs to the technical field of lamps and lanterns, and comprises a cylindrical shell, a connecting plate, a spring assembly, a light-emitting assembly and a driving unit, wherein the cylindrical shell is made of a fire prevention material, one end of the cylindrical shell is open, the other end of the cylindrical shell is hermetically connected with a bottom plate, the bottom plate is provided with a first clamping block formed by inward turning, the connecting plate is used for hermetically turning over a first opening formed after the first clamping block is formed, the spring assembly is used for fixing the cylindrical shell, and the light-emitting assembly is arranged in the cylindrical shell and is provided with a light source plate; the driving unit is used for connecting the light-emitting component; the utility model provides a fire prevention down lamp can solve current lamps and lanterns equipment inconvenient, need supporting fire prevention section of thick bamboo of using just can prevent fires, and the inconvenient technical problem of installation inconvenient brought thereupon.

Description

Fire-proof down lamp

Technical Field

The utility model belongs to the technical field of lamps and lanterns, more specifically say, relate to a fire prevention down lamp.

Background

If the lamp is spontaneously ignited, surrounding objects are easily ignited to cause a fire. For example, a down lamp installed on a ceiling may be made of an inflammable material such as wood or plastic, and thus, after the lamp is ignited, the ceiling is ignited by the flame escaping from the lamp. In order to prevent this, the lamp may be mounted in a fireproof tube, and the fireproof tube may be mounted on an external base such as a ceiling. When the lamp is in spontaneous combustion, the fireproof cylinder can play a role in isolating flames, and the flames are prevented from jumping outwards to be in contact with a ceiling, so that the fire is prevented from expanding. The problem exists that the installation of the lamp using the fireproof cylinder is complex and difficult, and the whole ceiling needs to be replaced if the lamps with different sizes need to be replaced, which is very inconvenient; meanwhile, the existing fireproof lamp also has the problem of inconvenient assembly.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a fire prevention down lamp aims at solving current lamps and lanterns equipment inconvenient, need supporting fire prevention section of thick bamboo of using and just can prevent fires, and the inconvenient technical problem of installation inconvenient brought thereupon.

In order to achieve the above object, the utility model adopts the following technical scheme: the fireproof down lamp comprises a cylindrical shell, a connecting plate, a spring assembly, a light-emitting assembly and a driving unit;

the cylindrical shell is made of fireproof materials, one end of the cylindrical shell is open, the other end of the cylindrical shell is connected with the bottom plate in a sealing mode, and a first clamping block which is formed by being turned inwards is arranged on the bottom plate;

the connecting plate is used for sealing and folding a first opening formed after the first clamping block is formed;

the spring assembly is used for fixing the cylindrical shell;

the light-emitting component is arranged in the cylindrical shell and is provided with a light source plate which is in adaptive connection with the first clamping block;

the driving unit is used for connecting the light-emitting component.

As another embodiment of the present application, the light source board is provided with a positioning slot matched with the first clamping block.

As another embodiment of the present application, the bottom plate and the cylindrical housing are of an integral structure.

As another embodiment of this application, the location breach has been seted up to first open-ended next door, be equipped with the second fixture block on the connecting plate, the second fixture block is used for the card to be gone into location breach makes the connecting plate pastes tightly the surface and the shutoff of bottom plate first opening.

As another embodiment of the present application, the spring assembly is coupled to the cylindrical housing through the coupling plate.

As another embodiment of the present application, the connecting plate is provided with an extension on which the spring assembly is mounted.

As another embodiment of the present application, the open end of the cylindrical housing is provided with a mounting surface ring, and the spring assembly includes a spiral body portion and a projecting portion that generates a pressing force by elastic deformation of the spiral body portion and clamps the external base body in cooperation with the mounting surface ring.

As another embodiment of this application, the drive unit is external and includes the box body of making by the fire prevention material, the drive unit still including install in drive module in the box body, drive module passes through the cable and connects light emitting component, the cable gets into through sealed threading structure in the cylindric shell.

As another embodiment of the present application, the sealing threading structure comprises a second opening and a closure;

the second opening is formed in the bottom plate;

the blocking piece is arranged on the cable and provided with a wire passing cavity for the cable to pass through, and the blocking piece is used for being clamped to the bottom plate and blocking the second opening.

As another embodiment of this application, the shutoff piece is for preventing drawing the knot, prevent drawing the knot and be equipped with apron and elasticity fixture block, the apron is used for the shutoff the second opening, the elasticity fixture block stretches into in the cylindric shell, and with apron cooperation chucking the bottom plate.

Compared with the prior art, the fireproof down lamp provided by the utility model has the cylindrical shell made of fireproof materials, the open end of the cylindrical shell is downward and lower than the external base body when in use, the bottom plate seals the other end of the cylindrical shell, and when the light-emitting component arranged in the cylindrical shell spontaneously ignites, the cylindrical shell can isolate the fire source from the external base body, surround and restrict the fire source in the cylindrical shell, prevent the fire from expanding and achieve the purpose of fire prevention; meanwhile, the bottom plate is provided with the first clamping block, and the light source plate is in adaptive connection with the first clamping block, so that the light source plate is convenient to position and mount, and the assembly efficiency of the lamp is improved; the first fixture block is formed by stamping and turning a small block of material of the bottom plate, no additional raw material is needed, the manufacturing process is simple, the raw material and manufacturing cost of the lamp are reduced, and the market competitiveness of the lamp is improved; a first opening formed when the first clamping block is stamped and turned over is blocked by the connecting plate, so that the sealing performance of the cylindrical shell is ensured, flame is prevented from escaping from the first opening, and the lamp is ensured to have the required fireproof capacity; based on the analysis, the utility model provides a fire prevention down lamp not only is convenient for assemble, make, does benefit to and saves the cost, need not install through a fire prevention section of thick bamboo when using moreover, and lamps and lanterns self have fire-proof ability promptly, during the installation, sets up the mounting hole that the size is suitable on outside base member, puts into the mounting hole with the cylindric shell to utilize spring assembly with lamps and lanterns fixed to outside base member can, convenient high-efficient.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic view of a top view structure of a fire-proof down lamp provided by an embodiment of the present invention;

fig. 2 is a schematic bottom view of a fire-proof down lamp according to an embodiment of the present invention;

fig. 3 is a schematic view of an overlooking explosion structure at a middle bottom plate of the fire-proof down lamp provided by the embodiment of the present invention;

fig. 4 is a schematic top view of a cylindrical housing of a fire-proof down lamp according to an embodiment of the present invention;

fig. 5 is a schematic view of a bottom view structure of a cylindrical housing in a fire-proof down lamp according to an embodiment of the present invention;

fig. 6 is a schematic sectional view of the cylindrical housing when the fire-proof down lamp provided by the embodiment of the present invention is installed on the external base body;

fig. 7 is a schematic view of a structural composition of a spring assembly in the fire-proof down lamp provided by the embodiment of the present invention;

fig. 8 is a schematic cross-sectional structure view of a cylindrical housing in the fire-proof down lamp provided by the embodiment of the present invention;

FIG. 9 is an enlarged view taken at A in FIG. 8;

fig. 10 is a schematic structural view of a light source plate in a fire-proof down lamp provided by an embodiment of the present invention;

FIG. 11 is an enlarged view at B of FIG. 8;

fig. 12 is the embodiment of the utility model provides a block off piece department's in fire prevention down lamp structure schematic diagram.

In the figure: 1. a cylindrical housing; 11. a third fixture block; 12. a limiting ring; 13. mounting a face ring; 14. a transition section; 2. a spring assembly; 21. a connecting plate; 211. a second fixture block; 22. riveting; 23. an extension portion; 231. clamping a plate; 24. a helical body portion; 241. a protruding portion; 242. a first open end; 243. a second open end; 3. a light emitting assembly; 31. a light source plate; 311. positioning the clamping groove; 32. a light reflector; 33. a lens; 331. an annular neck; 4. a drive unit; 5. a base plate; 51. a first clamping block; 52. a first opening; 53. positioning the notch; 54. a second opening; 6. an outer substrate; 71. a cable; 72. a blocking member; 721. a cover plate; 722. and the elastic clamping block.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 6 together, a description will now be given of a fire-proof down lamp according to the present invention. The fireproof down lamp comprises a cylindrical shell 1, a connecting plate 21, a spring assembly 2, a light-emitting assembly 3 and a driving unit 4, wherein the cylindrical shell 1 is made of fireproof materials, one end of the cylindrical shell is open, the other end of the cylindrical shell is connected with a bottom plate 5 in a sealing mode, and a first clamping block 51 formed by inwards turning over is arranged on the bottom plate 5; the connecting plate 21 is used for sealing and folding a first opening 52 formed after the first fixture block 51 is formed, the spring assembly 2 is used for fixing the cylindrical shell 1, the light emitting assembly 3 is installed in the cylindrical shell 1 and is provided with the light source plate 31 which is in adaptive connection with the first fixture block 51, and the driving unit 4 is used for connecting the light emitting assembly 3.

Compared with the prior art, the fireproof down lamp provided by the utility model has the cylindrical shell 1 made of fireproof material, the open end of the cylindrical shell 1 is downward and lower than the external base body 6 when in use, the bottom plate 5 seals the other end of the cylindrical shell 1, when the light-emitting component 3 arranged inside the cylindrical shell 1 spontaneously ignites, the cylindrical shell 1 can isolate the fire source from the external base body 6, surround and restrict the fire source inside the cylindrical shell 1, prevent the fire from expanding, and achieve the purpose of fire prevention; meanwhile, the first fixture block 51 is arranged on the bottom plate 5, and the light source plate 31 is in adaptive connection with the first fixture block 51, so that the light source plate 31 is convenient to position and mount, and the assembly efficiency of the lamp is improved; the first fixture block 51 is formed by stamping and folding a small block of material of the bottom plate 5, no additional raw material is needed, the manufacturing process is simple, the raw material and manufacturing cost of the lamp are reduced, and the market competitiveness of the lamp is improved; the first opening 52 formed when the first fixture block 51 is punched and folded is blocked by the connecting plate 21, so that the sealing property of the cylindrical shell 1 is ensured, flame is prevented from escaping from the first opening 52, and the lamp is ensured to have the required fireproof capacity; based on the analysis, the utility model provides a fire prevention down lamp not only is convenient for assemble, make, does benefit to and saves the cost, need not install through a fire prevention section of thick bamboo when using moreover, and lamps and lanterns self have fire-proof ability promptly, during the installation, sets up the mounting hole that the size is suitable on outside base member 6, puts into the mounting hole with cylindric shell 1 to utilize spring assembly 2 with lamps and lanterns fixed to outside base member 6 can, convenient high-efficient.

Specifically, the fireproof material is the prior art, and can be a nonflammable metal or a 5VA material, wherein 5VA is the highest fireproof grade in UL94, and UL94 is full name of flammable UL94 grade, and is the most widely applied flammable performance standard of plastic materials; along with the development of fireproof material technique, everyone has required fire behavior, satisfies the material homoenergetic that intensity required simultaneously and all can regard as the preparation the utility model provides a fireproof material of lamps and lanterns. Specifically, the driving unit may be not only an external one as shown in fig. 1 and fig. 2, but also the driving unit 4 may be embedded in the cylindrical housing 1, and at this time, the driving unit 4 and the light emitting assembly 3 may share the fireproof effect of the cylindrical housing 1. Specifically, the first latch 51 and the first opening 52 are both rectangular, and when the housing 1 is made of a metal material, the second latch 51 may be formed by folding toward the inside of the housing 1 in a stamping manner. Specifically, the number of the spring assemblies 2 is two, and the two spring assemblies are symmetrically and fixedly arranged on the bottom plate 5; accordingly, the number of the first latch 51 and the first opening 52 is two. Specifically, the connecting plate 21 is fixedly connected with the bottom plate 5 through a rivet 22, and rivet holes corresponding to the positions are formed in the connecting plate 21 and the bottom plate 5.

As a specific embodiment of the fire-proof tube light provided by the present invention, please refer to fig. 8 to fig. 10, a positioning slot 311 matched with the first clamping block 51 is disposed on the light source plate 31. The adaptive connection between the light source board 31 and the first fixture block 51 is realized through the positioning clamping slot 311, so that the positioning efficiency of the light source board 31 is improved, and the assembling efficiency of the lamp is further improved.

Specifically, the light source plate 31 is quickly positioned by the positioning clamping groove 311 and the first clamping block 51 and then fixed to the bottom plate 5 by screws, and screw holes corresponding to the positions are arranged on the light source plate 31 and the bottom plate 5; after the screw is screwed in, the screw hole is closed, and the closing performance of the bottom plate 5 cannot be influenced; the number of the positioning card slots 311 is two. Specifically, still be equipped with the luminous body on the light source board 31, the luminous body can be LED lamp pearl, and the light emitting area of LED lamp pearl is towards the open end of cylindric shell 1.

As a specific implementation of the fire-proof tube light provided by the utility model, please refer to fig. 4 and 5, the structure of

bottom plate

5 and 1 formula as an organic whole of cylindric shell,

bottom plate

5 and 1 integrated into one piece of cylindric shell are convenient for manufacturing, reduce the equipment process. The cylindrical shell 1 and the bottom plate 5 may be press-molded by means of a mold.

As a specific implementation manner of the fire-proof tube light, please refer to fig. 3 to 5, a positioning notch 53 is opened beside the first opening 52, a second fastening block 211 is disposed on the connecting plate 21, and the second fastening block 211 is used for being clamped into the positioning notch 53, so that the connecting plate 21 is tightly attached to the outer surface of the bottom plate 5 and blocks the first opening 52.

The positioning notch 53 can quickly position the connecting plate 21 during assembly, so that the assembly efficiency is improved, the connecting plate 21 accurately covers the first opening 52, and the first opening 52 is blocked; simultaneously, the rivet holes on the connecting plate 21 can be aligned with the rivet holes on the bottom plate 5, so that the first cover plate 31 can be conveniently fixed on the bottom plate 5 by using a riveting machine. Specifically, each first opening 52 is correspondingly provided with two positioning notches 53, the positioning notches 53 and the second fixture block 211 are both rectangular, and the positioning notches 53 may or may not penetrate through the thickness direction of the bottom plate 5.

As a specific embodiment of the fire-proof tube light provided by the present invention, please refer to fig. 1 and fig. 3, the spring assembly 2 is connected to the cylindrical housing 1 through the connecting plate 21. The connecting plate 21 solves the installation problem of the spring assembly 2, and can block the first opening 52, so that the sealing performance of the cylindrical shell 1 is ensured, and two purposes are achieved at one time.

As a specific embodiment of the fire-proof tube light provided by the present invention, please refer to fig. 7, the connecting plate 21 is provided with an extending portion 23, and the spring assembly 2 is installed on the extending portion 23. The extension portion 23 and the connecting plate 21 are of an integral structure, and after the spring assembly is mounted to the cylindrical shell 1, the extension portion 23 is bent towards one side of the open end of the cylindrical shell 1, so that the spring assembly 2 is close to the main body of the cylindrical shell 1, and the cylindrical shell 1 is convenient to fix.

As a specific embodiment of the fire-proof tube light, please refer to fig. 1 to 7, the open end of the cylindrical housing 1 is provided with the mounting surface ring 13, the spring assembly 2 includes the spiral main body portion 24 and the extension portion 241, the extension portion 241 generates the pressing force by elastic deformation of the spiral main body portion 24, and cooperates with the mounting surface ring 13 to clamp the external base 6.

Specifically, the spring assembly 2 is formed by bending and bending a metal rod, the spiral main body portion 24 and the extending portion 241 are of an integrated structure, the spring assembly 2 is provided with a first open end 242 and a second open end 243, the extending portion 23 is provided with an accommodating groove for accommodating the spiral main body portion 24, and two side edges of the accommodating groove are provided with clamping plates 231 extending inwards; when the screw is installed, the second open end 243 is firstly inserted into the receiving groove, and after the second open end is tightly attached to and fastened with the surface of the extending part 23 which is not on the same side as the extending part 35, the screw main body part 24 is pressed, so that the length of the screw main body part 24 is reduced, and the screw main body part can be placed into the receiving groove; after the spiral main body part 24 is placed in the accommodating groove, the extrusion force is removed, the spiral main body part 24 restores to a natural state, the length is increased, and at the moment, the clamping plate 231 extends into the spiral main body part 24, so that the spring assembly 2 is installed, and the spring assembly 2 is fixed on the extension part 23; at this time, the first open end 242 contacts with the clamping plate 231, the second open end 243 contacts with the plate body at the lower part of the extending part 23, and the first open end 242 and the second open end 243 are located at different sides of the plate body of the extending part 23, if the extending part 241 is pulled upwards at this time, there is a tendency of driving the spiral main body part 24 to rotate, but the first open end 242 and the second open end 243 are both restrained by the plate body of the extending part 23, and the rotation of the spiral main body part 24 is prevented, so that the spiral main body part 24 generates torsion and is transmitted to the extending part 241, a pressing force is generated, and the extending part 241 can tightly abut against the external base body 6, thereby realizing the fixed installation of the.

When the external base body 6 is a ceiling, the mounting surface ring 13 can be matched with the spring assembly 2 to realize the fixed mounting of the lamp. When the fireproof down lamp provided by the utility model is installed, firstly, a mounting hole matched with the size of the lamp is arranged on the ceiling, and then the extension part 241 of the spring component 2 is pulled upwards (the extension part 241 has downward elastic force under the action of the torsion force of the spiral main body part 24), so that the upper part of the cylindrical shell 1 can pass through the mounting hole from bottom to top; after the bottom plate 5 and the spring assembly 2 pass through the mounting hole, the extending portion 241 is released, the extending portion 241 swings under the action of elastic force and presses the upper surface of the ceiling, meanwhile, the mounting surface ring 13 is in contact with the lower surface of the ceiling, and the ceiling is clamped between the extending end of the extending portion 241 and the mounting surface ring 13, so that the lamp can be firmly and stably mounted in the mounting hole, as shown in fig. 6.

As a specific implementation manner of the fire prevention down lamp, please refer to fig. 1, fig. 3 and fig. 4, drive unit 4 is external and includes the box body of being made by the fire prevention material, drive unit 4 is still including installing the drive module in the box body, and drive module passes through cable 71 and connects light-emitting component 3, and cable 71 passes through in sealed threading structure gets into cylindric shell 1. The sealing threading structure can not only enable the cable 71 to enter the cylindrical shell 1, but also ensure that the entering of the cable 71 cannot damage the sealing performance of the bottom plate 5, and ensure that the fireproof performance of the lamp cannot be influenced.

The driving module is a conventional technology, and is used for converting an external power supply into a current and a voltage suitable for the light source board 31 to drive the light emitting body to emit light. The box body is made of fireproof materials, so that flame can be prevented from flowing outwards after the driving module burns, and the lamp is ensured to have required fireproof performance. Specifically, the cable 71 needs to have UL related certification, has a corresponding flame retardant capability, and does not cause flame of the cartridge body of the driving unit 4 or extension inside the cylindrical housing 1 to the outside, resulting in expansion of fire; the cable 71 only needs to have a certain flame retardant capability and does not need to reach the flame retardant rating of the cylindrical housing 1.

As a specific embodiment of the fire-proof down lamp provided by the present invention, please refer to fig. 3 and 4, the sealing threading structure includes a second opening 54 and a plugging member 72, the second opening 54 is provided on the bottom plate 5; the blocking piece 72 is arranged on the cable 71 and is provided with a wire passing cavity for the cable 71 to pass through, and the blocking piece 72 is used for being clamped to the bottom plate 5 and blocking the second opening 54. The second opening 54 can be provided for the cable 71 to pass through, so that the cable 71 can smoothly enter the cylindrical shell 1, and meanwhile, the second opening 54 is blocked by the blocking piece 72, so that the flame inside the cylindrical shell 1 is prevented from channeling upwards, and the lamp is ensured to have the required fireproof performance.

As a specific implementation manner of the fire-proof tube light, please refer to fig. 12, the plugging piece 72 is a pull-proof buckle, the pull-proof buckle is provided with a cover plate 721 and an elastic fixture block 722, the cover plate 721 is used for plugging the second opening 54, the elastic fixture block 722 extends into the cylindrical housing 1, and cooperates with the cover plate 721 to clamp the bottom plate 5, so as to realize the relative fixation of the plugging piece 72 and the bottom plate 5.

The elastic fixture block 722 is provided with a guide inclined plane, when the anti-pull buckle is inserted into the second opening 54, the guide inclined plane is pressed inwards by the edge of the second opening 54, and the elastic fixture block 722 is retracted, so that the anti-pull buckle can pass through the second opening 54; after the anti-pulling buckle passes through the second opening 54, the elastic fixture block 722 resets under the elasticity of the elastic fixture block 722, the convex block on the elastic fixture block 722 is contacted with the lower surface of the bottom plate 5, and meanwhile, the cover plate 721 is contacted with the upper surface of the bottom plate 5, so that the anti-pulling buckle is clamped in the second opening 54, the cover plate 721 can block the second opening 54, and the fireproof performance requirement of the lamp is met; meanwhile, the anti-pulling buckle can be firmly connected with the bottom plate 5, and the anti-pulling buckle is prevented from being separated from the second opening 54 when the cable 71 is pulled accidentally. Specifically, the blocking member 72 is also made of a fireproof material.

Specifically, as shown in fig. 8 and 11, the light emitting module 3 includes a reflector 32 and a lens 33 in addition to the light source board 31, and the reflector 32 and the lens 33 are connected to the cylindrical housing 1 through a mounting structure provided on the cylindrical housing 1. The reflector 32 is used for converging light rays, so that the light rays emitted by the luminous body on the light source plate 31 reach the lens 33, and the lens 33 can condense light rays, so that the lamp has an expected lighting effect; the reflector 32 is in a horn mouth shape, and both ends of the reflector are open ends, one end of the reflector is smaller, and the other end of the reflector is larger; the end with the smaller opening is abutted against the light source plate 31 or the bottom plate 5, and the edge with the larger opening is contacted with the mounting structure arranged on the cylindrical shell 1, so that the mounting of the reflector 32 is realized; the lens 33 is a circular convex plate, the lens 33 protrudes towards the opening end of the cylindrical shell 1, and the edge of the lens 33 is contacted with the mounting structure on the cylindrical shell 1, so that the lens 33 is mounted. Specifically, the reflecting body 32 and the lens 33 have low flame retardant requirements, and can be made of a fireproof material, or made of a fireproof material with a lower flame retardant grade compared with the cylindrical shell 1; when the driving unit 4 is a built-in non-isolated driving, the lens 33 is generally made of a fireproof material, so that the lens 33 can be matched with the closed end of the cylindrical shell 1 to form a closed space with fireproof capacity, flame can be prevented from escaping outwards, flame can be prevented from falling from the open end of the cylindrical shell 1, and the fireproof performance of the lamp is further improved; when the driving unit 4 is an external and isolated driving, the reflector 32 and the lens 33 are not made of fireproof materials.

Referring to fig. 8 and 11, the mounting structure includes a limiting ring 12 and a third block 11, the limiting ring 12 has a stepped cross section and is integrated with the cylindrical housing 1, and is a part of the cylindrical housing 1, the limiting ring 12 contacts with the edge of the reflector 32 or the lens 33, the limiting ring 12 is used for limiting the movement of the reflector 32 and the lens 33 in the axial direction of the cylindrical housing 1 and towards one side of the bottom plate 5, and the limiting ring 12 is also used for limiting the radial movement of the reflector 32 and the lens 33 in the cylindrical housing 1; the third fixture block 11 is formed by turning towards the inside of the cylindrical shell 1, the width of an opening gap formed by the turning is not more than 2mm, the fireproof requirement of a lamp is met, the third fixture block 11 is in contact with the edge of the reflector 32 or the edge of the lens 33, the third fixture block 11 can be clamped in an annular clamping groove at the edge of the lens 33, and the reflector 32, the lens 33 and the cylindrical shell 1 are fixed and assembled. Lens 33 can be made by the plastics material, during the installation, reflector 32 and lens 33 are put into by the open end of cylindric shell 1, after reaching third fixture block 11, the annular arch at lens 33 border receives the extrusion of third fixture block 11, lens 33 takes place elastic deformation, adduction slightly, the annular arch of top is behind third fixture block 11, third fixture block 11 is gone into in the annular draw-in groove of upper and lower annular arch centre, lens 33 resilience restores, the limiting displacement of cooperation reflector 32 border and spacing ring 12, reflector 32 and lens 33 can be firmly installed in cylindric shell 1.

Specifically, the third blocks 11 are rectangular and formed by folding a part of the material on the cylindrical shell 1 inward, and the number of the third blocks 11 is four and arranged along the circumferential direction.

Specifically, the cylindrical shell 1 is provided with a transition portion 14, an opening of the transition portion 14 is gradually enlarged, and the transition portion 14 is provided with a step ring. The transition part 14 is a step surface with a certain height, a plurality of continuous step rings are arranged on the step surface, the step surface has an anti-dazzle function, the step surface becomes the anti-dazzle surface, and meanwhile, a circle of step structures which are coaxially arranged are formed by the step rings and have a certain aesthetic feeling, so that the effect of beautifying the appearance of the lamp can be achieved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Fire prevention down lamp, its characterized in that includes:

a spring assembly for fixing the cylindrical housing;

the light-emitting component is arranged in the cylindrical shell and is provided with a light source plate which is in adaptive connection with the first clamping block; and

and the driving unit is used for connecting the light-emitting component.

2. A fire-proof down lamp as claimed in claim 1, wherein the light source board is provided with a positioning slot matched with the first clamping block.

3. A fire resistant downlight according to claim 1, wherein the base plate is of integral construction with the cylindrical housing.

4. A fire-proof down lamp as claimed in claim 1, wherein a positioning notch is provided beside the first opening, and a second clamping block is provided on the connecting plate for being clamped into the positioning notch, so that the connecting plate is tightly attached to the outer surface of the base plate and blocks the first opening.

5. A fire resistant downlight according to claim 1, wherein the spring assembly is connected to the cylindrical housing by the web.

6. A fire resistant downlight according to claim 5, wherein the connection plate is provided with an extension on which the spring assembly is mounted.

7. A fire resistant downlight according to claim 6, wherein the open end of the cylindrical housing is provided with a mounting face ring, the spring assembly comprising a helical body portion and an extension portion which is resiliently deformed by the helical body portion to generate a compressive force and which cooperates with the mounting face ring to clamp the external substrate.

8. A fire resistant down lamp as claimed in claim 1, wherein the driving unit is external and comprises a box body made of fire resistant material, the driving unit further comprises a driving module installed in the box body, the driving module is connected to the light emitting assembly through a cable, and the cable enters the cylindrical housing through a sealing threading structure.

9. A fire resistant downlight according to claim 8, wherein the sealing threading arrangement comprises:

the second opening is formed in the bottom plate; and

the plugging piece is arranged on the cable and provided with a wire passing cavity through which the cable passes, and the plugging piece is used for being clamped to the bottom plate and plugging the second opening.

10. A fire resistant down lamp as claimed in claim 9, wherein the blocking member is a tension lock provided with a cover plate for blocking the second opening and an elastic clip which extends into the cylindrical housing and cooperates with the cover plate to clamp the base plate.