Novel fireproof capsule lamp

Abstract

The utility model relates to a novel fireproof down lamp, including lamp stand, lamp shade and fireproof cover, the lamp shade is installed in the lower part of lamp stand, the fireproof cover covers on the lamp stand, the lamp shade and the fireproof cover are all fireproof material, the fireproof cover has the side plate, the fireproof cover is a cylindrical cylinder and is constituted by the side plate and the top plate, the lamp shade is the conical frustum appearance structure, has the curved surface side cover plate, when the fireproof cover covers on the lamp stand, the side plate extends downward and is in contact with the curved surface side cover plate. The utility model discloses through the lamp shade and the fireproof cover of fireproof material completely cover the light fixture mounting hole on the ceiling, even if the lamp stand meets the open fire and is burnt, the fireproof cover still is in contact with the curved surface side cover plate under the action of gravity, still can effectively block the path that the flame directly intrudes upwards on the ceiling.

Description

Technical Field

[0001] This utility model relates to the field of suspended lighting fixtures, specifically to a novel fireproof downlight. Background Technology

[0002] In modern building interior decoration, ceilings not only serve decorative and functional purposes such as beautifying the space, optimizing the acoustic environment, and concealing pipelines and equipment, but are also increasingly being given important fire safety functions. Currently widely used ceiling materials, such as mineral wool boards, calcium silicate boards, gypsum boards, and various composite flame-retardant boards, generally possess excellent heat insulation and fire resistance properties. These materials can effectively block the transmission of flames and high temperatures from the interior to the space above the ceiling in the early stages of a fire, thereby protecting electrical wiring, ventilation ducts, fire-fighting facilities, and other combustible components hidden within the ceiling, preventing the rapid spread of fire through the ceiling, and buying crucial time for evacuation and initial fire control.

[0003] However, in practical applications, multiple mounting holes are usually required in the ceiling to hang light fixtures in order to meet lighting needs. Recessed or ceiling-mounted light fixtures are particularly common. These types of fixtures often require holes to be drilled in the ceiling to match the shape of the light fixture, resulting in partial damage to the originally continuous and complete fireproof partition. In the event of a fire indoors, open flames may first ignite the internal components of the light fixture. Especially if the central part of the fixture melts or burns through due to high temperatures, flames and hot air currents can easily penetrate directly into the enclosed space above the ceiling through the central part of the fixture.

[0004] Therefore, although modern ceiling materials have made significant progress in fire resistance and heat insulation, the fire-resistant weak points formed by the mounting holes for light fixtures have become a prominent safety hazard in the current passive fire protection system of buildings. It is urgent to optimize the structure of light fixtures to solve the problem of fire-resistant weak points in ceilings caused by the mounting holes for light fixtures. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a new type of fireproof downlight to solve the problem of fireproof weak points in the ceiling caused by the mounting holes of the light fixture.

[0006] To solve the above-mentioned technical problems, this utility model achieves the following solution:

[0007] This utility model discloses a novel fireproof downlight, comprising a lamp holder, a lamp cover, and a fireproof cover, wherein the lamp cover is installed on the lower part of the lamp holder, and the fireproof cover is fitted onto the lamp holder;

[0008] Both the lampshade and the fireproof cover are made of fireproof material, and the fireproof cover has side panels;

[0009] The fireproof cover is a cylindrical tube consisting of side plates and a top plate;

[0010] The lampshade has a frustum-shaped structure with curved side panels. When the fireproof cover is placed on the lamp holder, the side panels extend downward and abut against the curved side panels.

[0011] Preferably, a fireproof cable is connected to the side of the lamp holder;

[0012] A circular hole is provided on the side plate. During installation, the fireproof cable passes through the circular hole and connects to the lamp holder.

[0013] Preferably, at least two connecting plates are installed on the top of the lampshade;

[0014] The bottom of the side plate has at least two U-shaped grooves. The number of U-shaped grooves is the same as the number of connecting plates, and their positions correspond to each other. When the fireproof cover is placed on the lamp holder, the connecting plate extends out from the U-shaped groove.

[0015] Preferably, at least two limiting plates are arranged circumferentially and equidistantly on the inner wall of the side plate;

[0016] The limiting plate is elastic, and when the fireproof cover is placed on the lamp holder, at least two of the limiting plates press against the outer wall of the lamp holder.

[0017] Preferably, the limiting plate is composed of an abutment part, two connecting parts and two fixing parts;

[0018] The abutting part has an arc surface structure, and both ends of the abutting part are smoothly connected to a connecting part. When the fireproof cover is placed on the lamp holder, the abutting part and the outer wall of the lamp holder are pressed together.

[0019] The two connecting parts are arc-shaped structures, located on both sides of the abutting part, and are used to connect the abutting part and the fixing part;

[0020] One end of the fixing part is fixedly connected to the inner wall of the side plate, and the other end is smoothly connected to the connecting part.

[0021] Preferably, the lower edge of the abutting part is connected to a sub-plate, the upper and lower edges of the sub-plate are both arc-shaped, and the lower edge of the sub-plate abuts against the inner wall of the side plate.

[0022] Preferably, at least two sets of fixing structures are provided on the side plate, and each set of fixing structures has two through holes;

[0023] Each of the aforementioned fixing parts has a threaded hole;

[0024] The distance between the two through holes is the same as the distance between the two threaded holes on the limiting plate;

[0025] When installing the limiting plate, the bolt passes through the through hole and is installed in the threaded hole.

[0026] Preferably, the bottom of the lampshade is further provided with an annular flat plate;

[0027] The connecting plate consists of a fixed plate, a supporting plate, a connecting rod, and a spring hinge;

[0028] The fixing plate is fixedly installed on the top of the lampshade, and one end of the fixing plate extends out of the top of the lampshade and is rotatably connected to one end of the support plate through the connecting rod;

[0029] The spring hinge is fitted onto the connecting rod. When the new type of fireproof downlight is installed, the annular flat plate abuts against the lower surface of the ceiling, and the elastic force of the spring hinge presses the support plate against the upper surface of the ceiling.

[0030] Compared with the prior art, the beneficial effects of this utility model are:

[0031] 1. The fireproof cover and lampshade are made of metallic fire-resistant materials or inorganic non-metallic materials, specifically ceramic fiberboard, molded ceramic composite materials, or stainless steel. The lampshade itself is made of fire-resistant material, which is not easily melted or burned even when exposed to flames, thus delaying the spread of fire to the interior of the lamp. At the same time, the upper fireproof cover is made of high-temperature resistant and flame-retardant material, and its top plate completely covers the top of the lamp holder. Since the lamp holder shell is usually made of hard plastic for electrical insulation purposes, even if the lamp holder is burned by an open flame, the fireproof cover will still be in contact with the curved side cover plate due to gravity, which can still effectively block the path of flames directly entering the ceiling. Attached Figure Description

[0032] Figure 1 This is a structural schematic diagram of a novel fireproof downlight according to the present invention.

[0033] Figure 2 This is a schematic diagram of the structure of the lamp holder and lampshade in a novel fireproof downlight according to this utility model.

[0034] Figure 3 This is a bottom view of the fireproof cover in a novel fireproof downlight according to this utility model.

[0035] Figure 4 This is a top view of the fireproof cover in a novel fireproof downlight according to this utility model.

[0036] Figure 5 This is a schematic diagram showing the fireproof cover of a novel fireproof downlight of this utility model in its flipped-open state.

[0037] Figure 6This is a schematic diagram of the connecting plate in a novel fireproof downlight according to this utility model.

[0038] Figure 7 This is a schematic diagram of a novel fireproof downlight of this utility model installed on the ceiling.

[0039] The following labels are used in the attached diagram: 1. Lamp holder; 2. Lamp cover; 3. Fireproof cover; 11. Fireproof cable; 12. Sliding button; 21. Connecting plate; 22. Curved side cover plate; 23. Annular flat plate; 31. Side plate; 32. Top plate; 211. Fixed plate; 212. Support plate; 213. Hinge rod; 214. Spring hinge; 310. Limiting plate; 311. Round hole; 312. U-shaped groove; 313. Through hole; 321. Upper lever; 411. Limiting block; 3100. Threaded hole; 310a. Abutment part; 310b. Connecting part; 310c. Fixed part; 310d. Sub-plate. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments, so that the advantages and features of the present utility model can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present utility model. Obviously, the embodiments described in this utility model are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0042] Example 1: The specific structure of this utility model is as follows:

[0043] like Figure 1 , Figure 2 and Figure 4 As shown, a novel fireproof downlight includes a lamp holder 1, a lampshade 2, and a fireproof cover 3. The lampshade 2 is installed on the lower part of the lamp holder 1, and the fireproof cover 3 covers the lamp holder 1. Both the lampshade 2 and the fireproof cover 3 are made of fireproof material, and the fireproof cover 3 has a side plate 31. The fireproof cover 3 is a cylindrical body composed of a side plate 31 and a top plate 32. The lampshade 2 has a frustum-shaped structure with a curved side cover plate 22. When the fireproof cover 3 is placed on the lamp holder 1, the side plate 31 extends downward and abuts against the curved side cover plate 22.

[0044] In this embodiment, the fireproof cover 3 and the lampshade 2 are made of metallic fireproof materials or inorganic non-metallic materials, specifically ceramic fiberboard, molded ceramic composite materials, or stainless steel. The lampshade 2 itself is made of fireproof material, and it is not easy to melt or burn even when exposed to flames, which can delay the invasion of fire into the interior of the lamp. At the same time, the upper fireproof cover 3 is made of high temperature resistant and flame retardant material, and its top plate 32 completely covers the top of the lamp holder 1. Since the outer shell of the lamp holder 1 is usually made of hard plastic for electrical insulation, even if the lamp holder 1 is burned by an open flame, the fireproof cover 3 will still abut against the curved side cover plate 22 under the action of gravity, which can still effectively block the path of flames directly entering the ceiling.

[0045] Furthermore, a fireproof cable 11 is connected to the side of the lamp holder 1; a circular hole 311 is opened on the side plate 31, and during installation, the fireproof cable 11 passes through the circular hole 311 and connects to the lamp holder 1. Furthermore, at least two connecting plates 21 are installed on the top of the lamp cover 2; at least two U-shaped grooves 312 are opened on the bottom of the side plate 31, the number of U-shaped grooves 312 being the same as the number of connecting plates 21, and their positions corresponding to each other. When the fireproof cover 3 is placed on the lamp holder 1, the connecting plates 21 extend out from the U-shaped grooves 312. Figure 5 As shown, during disassembly, the fireproof cover 3 can be flipped upwards and opened with the fireproof cable 11 disconnected, and the fireproof cable 11 is always installed in the round hole 311.

[0046] In this embodiment, the connecting plate 21 at the top of the lampshade 2 extends from the bottom of the lamp holder 1 and is used to fix it to the ceiling or mounting bracket. The U-shaped grooves 312 provided on the side plate 31 are the same in number and position as the connecting plates 21. When the fireproof cover 3 is closed, the connecting plates 21 pass through the U-shaped grooves 312, which not only ensures a firm connection between the lampshade 2 and the mounting structure, but also allows the fireproof cover 3 to be stably fitted onto the outside of the lamp. The design of the U-shaped grooves 312 allows the connecting plates 21 to achieve precise positioning while maintaining structural strength, avoiding jamming or cracking due to thermal expansion. This solution, by adding a fully enclosed fireproof cover 3 and using fire-resistant materials, significantly improves the overall fire resistance limit of the lamp and prevents external flames from directly burning the lamp holder and internal circuitry.

[0047] Furthermore, at least two limiting plates 310 are arranged circumferentially and equidistantly on the inner wall of the side plate 31; the limiting plates 310 are elastic, and when the fireproof cover 3 is closed on the lamp holder 1, at least two of the limiting plates 310 press against the outer wall of the lamp holder 1.

[0048] In this embodiment, the limiting plate 310 has a certain elastic deformation capacity, which can be slightly opened during assembly to accommodate the insertion of the lamp holder 1. After it is in place, it relies on the elastic recovery of the material to generate a pre-tightening force, achieving an interference fit or a pressing contact. The arc-shaped middle part fits in close contact with the side wall of the lamp holder 1 over a large area, which not only provides radial constraint, but also increases the heat conduction path, allowing the local heat of the lamp holder 1 to be discharged through the limiting plate 310; reducing stress concentration caused by uneven thermal expansion and preventing deformation of the fireproof cover 3.

[0049] like Figure 3 As shown, the limiting plate 310 further comprises an abutment portion 310a, two connecting portions 310b, and two fixing portions 310c. The abutment portion 310a has an arc-shaped surface structure, and both ends of the abutment portion 310a are smoothly connected to one of the connecting portions 310b. When the fireproof cover 3 is placed on the lamp holder 1, the abutment portion 310a and the outer wall of the lamp holder 1 are pressed against each other. The two connecting portions 310b have an arc-shaped surface structure and are located on both sides of the abutment portion 310a, used to connect the abutment portion 310a and the fixing portions 310c. One end of the fixing portion 310c is fixedly connected to the inner wall of the side plate 31, and the other end is smoothly connected to the connecting portion 310b.

[0050] Furthermore, a sub-plate 310d is connected to the lower edge of the abutting part 310a. The upper and lower edges of the sub-plate 310d are both arc-shaped, and the lower edge of the sub-plate 310d abuts against the inner wall of the side plate 31.

[0051] In this embodiment, the lower edge of the sub-plate 310d abuts against the inner wall of the side plate 31, forming a "diagonal brace" or "T-shaped support" structure. This design greatly enhances the ability of the limiting plate 310 to resist bending moment and shear force, preventing it from undergoing plastic deformation or fracture under long-term pressure or high temperature.

[0052] Furthermore, at least two sets of fixing structures are provided on the side plate 31, each set of fixing structures having two through holes 313; each fixing part 310c has a threaded hole 3100; the distance between the two through holes 313 is the same as the distance between the two threaded holes 3100 on a limiting plate 310; when installing the limiting plate 310, the bolt passes through the through holes 313 and is installed in the threaded hole 3100.

[0053] In this embodiment, the limiting plate 310 is fixedly connected to the side plate 31 by bolts. This is only one way of fixing the connection. It can also be welded or connected by a snap-fit ​​structure, etc.

[0054] Furthermore, such as Figure 6 and Figure 7As shown, the bottom of the lampshade 2 is also provided with an annular flat plate 23; the connecting plate 21 is composed of a fixed plate 211, a supporting plate 212, a hinge rod 213 and a spring hinge 214; the fixed plate 211 is fixedly installed on the top of the lampshade 2, one end of the fixed plate 211 extends out of the top of the lampshade 2 and is rotatably connected to one end of the supporting plate 212 through the hinge rod 213; the spring hinge 214 is fitted on the hinge rod 213. When the new fireproof downlight is installed, the annular flat plate 23 abuts against the lower surface of the ceiling, and the elasticity of the spring hinge 214 presses the supporting plate 212 against the upper surface of the ceiling.

[0055] In this embodiment, when the fireproof downlight needs to be installed in the ceiling light fixture hanging hole, the downlight is placed into the hanging hole and its direction is adjusted so that the opening of the lampshade 2 faces downwards. The support plates 212 on the two sets of connecting plates 21 abut against the inside or outer side of the hanging hole, thus installing the fireproof downlight in the hanging hole and preventing it from falling. During installation, the light fixture is inserted into the pre-drilled hole from below the ceiling. The annular flat plate 23 at the bottom of the lampshade 2 naturally fits against the lower surface of the ceiling; at the same time, the support plates 212 in the connecting plates 21 automatically flip upwards and press tightly against the upper surface of the ceiling under the elastic force of the spring hinge 214. This clamping method achieves a stable installation of the light fixture without the need for additional screws or hanging rods. The annular flat plate 23 is in close contact with the lower surface of the ceiling, which can effectively prevent flames and high-temperature smoke from escaping downwards or rising upwards from the edge of the light fixture. This solution uses the annular flat plate 23 and the supporting plate 212 to abut against the upper and lower surfaces of the ceiling in both directions, which significantly reduces or even eliminates the gap and improves the overall sealing and fire resistance continuity.

[0056] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the contents of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A novel fireproof downlight, characterized in that, It includes a lamp holder (1), a lamp cover (2) and a fireproof cover (3), wherein the lamp cover (2) is installed on the lower part of the lamp holder (1) and the fireproof cover (3) covers the lamp holder (1); Both the lampshade (2) and the fireproof cover (3) are made of fireproof material, and the fireproof cover (3) has a side plate (31). The fireproof cover (3) is a cylindrical tube consisting of a side plate (31) and a top plate (32); The lampshade (2) has a frustum-shaped structure and a curved side cover plate (22). When the fireproof cover (3) is placed on the lamp holder (1), the side plate (31) extends downward and abuts against the curved side cover plate (22).

2. The novel fireproof downlight as described in claim 1, characterized in that, A fireproof cable (11) is connected to the side of the lamp holder (1). A round hole (311) is opened on the side plate (31). During installation, the fireproof cable (11) passes through the round hole (311) and connects to the lamp holder (1).

3. The novel fireproof downlight as described in claim 1, characterized in that, At least two connecting plates (21) are installed on the top of the lampshade (2); The bottom of the side plate (31) is provided with at least two U-shaped grooves (312). The number of U-shaped grooves (312) is the same as the number of connecting plates (21), and their positions correspond to each other. When the fireproof cover (3) is covered on the lamp holder (1), the connecting plate (21) extends out from the U-shaped grooves (312).

4. The novel fireproof downlight as described in claim 1, characterized in that, At least two limiting plates (310) are arranged circumferentially at equal intervals on the inner wall of the side plate (31). The limiting plate (310) is elastic, and when the fireproof cover (3) is placed on the lamp holder (1), at least two of the limiting plates (310) press against the outer wall of the lamp holder (1).

5. The novel fireproof downlight as described in claim 4, characterized in that, The limiting plate (310) is composed of an abutment part (310a), two connecting parts (310b) and two fixing parts (310c); The abutting part (310a) has an arc surface structure, and both ends of the abutting part (310a) are smoothly connected to a connecting part (310b). When the fireproof cover (3) covers the lamp holder (1), the abutting part (310a) and the outer wall of the lamp holder (1) are pressed against each other. The two connecting parts (310b) are arc-shaped structures located on both sides of the abutting part (310a) and are used to connect the abutting part (310a) and the fixing part (310c). One end of the fixing part (310c) is fixedly connected to the inner wall of the side plate (31), and the other end is smoothly connected to the connecting part (310b).

6. The novel fireproof downlight as described in claim 5, characterized in that, The lower edge of the abutting part (310a) is connected to a sub-plate (310d), the upper and lower edges of the sub-plate (310d) are both arc-shaped, and the lower edge of the sub-plate (310d) abuts against the inner wall of the side plate (31).

7. The novel fireproof downlight as described in claim 5, characterized in that, At least two sets of fixing structures are provided on the side plate (31), and each set of fixing structures has two through holes (313). Each of the aforementioned fixing parts (310c) has a threaded hole (3100); The distance between the two through holes (313) is the same as the distance between the two threaded holes (3100) on a limiting plate (310); When the limiting plate (310) is installed, the bolt passes through the through hole (313) and is installed in the threaded hole (3100).

8. The novel fireproof downlight as described in claim 3, characterized in that, The bottom of the lampshade (2) is also provided with an annular flat plate (23); The connecting plate (21) is composed of a fixed plate (211), a support plate (212), a hinge rod (213) and a spring hinge (214). The fixed plate (211) is fixedly installed on the top of the lampshade (2). One end of the fixed plate (211) extends out of the top of the lampshade (2) and is rotatably connected to one end of the support plate (212) through the hinge rod (213). The spring hinge (214) is fitted onto the hinge rod (213). When the new fireproof downlight is installed, the annular flat plate (23) abuts against the lower surface of the ceiling, and the elastic force of the spring hinge (214) presses the support plate (212) against the upper surface of the ceiling.

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