CN212584806U

CN212584806U - GRG lighting device

Info

Publication number: CN212584806U
Application number: CN202021667246.1U
Authority: CN
Inventors: 谢景照; 庄裕产; 孙浩浩; 陈庆武; 成伟
Original assignee: Shenzhen Weiye Decoration Group Co ltd
Current assignee: Shenzhen Weiye Decoration Group Co ltd
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-02-23
Anticipated expiration: 2030-08-11

Abstract

The utility model relates to a GRG lighting device fixes on the wall, include: the angle iron net rack is fixedly arranged on the wall surface; the lamp strip is fixed on the wall surface and is positioned in the angle iron net rack; the GRG is covered on the wall surface and is fixedly connected with the angle iron net rack, a plurality of first light holes are formed in the side wall of the GRG, and the plurality of first light holes are distributed on the side wall of the GRG in a gradual change mode; the fireproof base layer is arranged on the surface, facing the angle iron net rack, of the GRG and avoids the first light transmitting holes, light emitted by the lamp strip is emitted out through the first light transmitting holes, the GRG shape, the shapes of the first light transmitting holes and light are combined into a whole on the basis of meeting the lighting effect, the decorative effect is improved, and the overall attractiveness is good; through at GRG towards angle iron net rack on the surface set up the fire prevention basic unit to improve the fire prevention effect, GRG is stretched when avoiding the conflagration breaing out, improves the installation nature, the extension time of fleing.

Description

GRG lighting device

Technical Field

The utility model relates to a building engineering technical field especially relates to a GRG lighting device.

Background

Along with the continuous demand of people for the aesthetic property and visual perception of buildings, lighting devices with various shapes emerge endlessly, and along with the great use of GRG (glass fiber Reinforced Gypsum board, Chinese name: glass fiber Reinforced Gypsum board) shapes in decoration, GRG has the advantages of various shapes, smooth surface, high whiteness, no need of repair, better fireproof performance, high strength and light weight, can be well bonded with various coatings and surface decoration materials (wood skin, fabrics and the like) to form an excellent decoration effect, and is widely applied to lighting devices.

At present, GRG lighting device mainly makes arbitrary molding structure with GRG and covers in the outside of lighting system, but, current GRG has certain the blockking to the light, sets up the light trap and also gradually appears in a lot of indoor designs as the supplementary light source at indoor light in GRG molding, and seting up of light trap will influence the figurative holistic pleasing to the eye degree of GRG to influence GRG's fire prevention effect, fire prevention effect is limited, and is not durable moreover.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a GRG lighting device to solve the problems of complicated structure, inconvenient assembly and disassembly, and poor stability of the GRG lighting device.

A GRG lighting device, to be fixed on a wall surface, comprising:

the angle iron net rack is fixedly arranged on the wall surface;

the lamp strip is fixed on the wall surface and is positioned in the angle iron net rack;

the GRG is covered on the wall surface and is fixedly connected with the angle iron net rack, a plurality of first light holes are formed in the side wall of the GRG, and the first light holes are distributed on the side wall of the GRG in a gradual change mode;

the fire prevention basic unit, the setting of fire prevention basic unit is in GRG moves towards the surface of angle steel rack, and dodge first light trap.

In one embodiment, the GRG comprises a plurality of moldboards, the plurality of moldboards are spliced to form the GRG, each moldboard is embedded with a connecting plate, and the connecting plate is fixed on the angle iron net rack through a first fastener.

In one embodiment, a plurality of the moldboards are spliced and fixed through a connecting assembly, the connecting assembly comprises an angle brace and a second fastening piece, two adjacent moldboards are spliced and arranged, and the angle brace is pressed on two adjacent moldboards and is fixed on the two adjacent moldboards through the second fastening piece.

In one embodiment, the first fastener is an expansion screw and the second fastener is a screw.

In one embodiment, the first light-transmitting holes on two adjacent modeling plates comprise a first circular arc and a second circular arc, and central axes of the first circular arc and the second circular arc are coincident and form a closed annular structure.

In one embodiment, at least one second light hole is formed in the bottom wall of the GRG, the second light hole is of a strip-shaped structure, and a light-transmitting plate is attached to the bottom wall of the GRG and covers the second light hole.

In one embodiment, the fireproof base layer is a glass magnesium board.

In one embodiment, the GRG lighting device further comprises a fireproof sealant, rock wool is arranged in a gap between the GRG and the wall surface, and the surfaces of the rock wool, the GRG and the wall surface, which are opposite to each other, are coated with the fireproof sealant respectively.

In one embodiment, the GRG and the wall surface are fixedly connected through a galvanized steel plate, and the surfaces of the galvanized steel plate, the GRG and the wall surface, which are opposite to each other, are coated with the fireproof sealant respectively.

In one embodiment, the surface of the angle iron net rack, which is in contact with the wall surface, is coated with the fireproof sealant.

In the GRG lighting device, the angle iron net rack supports the GRG and fixes the GRG on the wall surface, a plurality of first light holes are formed in the side wall of the GRG, the first light holes are limited to be distributed on the side wall of the GRG in a gradual change mode, and meanwhile, the fireproof base layer avoids the first light holes, so that light emitted by the lamp belt is emitted out through the first light holes, the GRG model, the plurality of first light holes and the lamp light are combined into a whole on the basis of meeting the lighting effect, the decorative effect is improved, and the whole attractiveness is better; through at GRG towards angle iron net rack on the surface set up the fire prevention basic unit to improve the fire prevention effect, GRG is stretched when avoiding the conflagration breaing out, improves the installation nature, the extension time of fleing.

Drawings

Fig. 1 is a schematic cross-sectional view of a GRG lighting device according to an embodiment of the present invention, when the GRG lighting device is installed on a wall surface;

fig. 2 is a schematic partial structure diagram of a GRG according to an embodiment of the present invention;

fig. 3 is a schematic cross-sectional view of a GRG lighting device according to another embodiment of the present invention, which is installed on the ground;

fig. 4 is a schematic cross-sectional view of a GRG lighting device according to another embodiment of the present invention, which is installed on the ground.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, the present invention provides a GRG lighting device 100, the GRG lighting device 100 can be disposed in a shop, a gym or a playground, and the GRG lighting device 100 is fixed on a wall surface 200, the GRG lighting device 100 includes several parts of an angle iron net rack 110, a light strip 120, a GRG130 and a fireproof base layer 140, wherein:

the angle iron net rack 110 is fixedly arranged on the wall surface 200; when the angle iron net rack 110 is specifically arranged, the angle iron net rack 110 can be fixed on the wall surface 200 through high-strength bolts, and the fixed connection mode of the angle iron net rack 110 and the wall surface 200 is not limited to the angle iron net rack, and other structural forms capable of meeting the requirements can be adopted; the angle iron net frame 110 includes a plurality of angle irons which are connected in a crisscross manner to form a net structure.

The light strip 120 is fixed on the wall surface 200, and the light strip 120 is positioned in the angle iron net rack 110; when the angle iron net rack is specifically arranged, the lamp strip 120 is arranged on the wall surface 200 between the angle iron net racks 110 and is fixedly connected with the wall surface 200 through screws, and the fixed connection mode of the lamp strip 120 and the wall surface 200 is not limited to the above, and other structural forms capable of meeting the requirements can be adopted; the light strip 120 may include a mounting plate 121 and a bead 122 fixed on the mounting plate 121, where the bead 122 may be an LED lamp, or may be in other light source forms meeting requirements.

The GRG130 is covered on the wall surface 200, the GRG130 is fixedly connected with the angle iron net rack 110, a plurality of first light holes 131 are formed in the side wall of the GRG130, and the plurality of first light holes 131 are distributed on the side wall of the GRG130 in a gradual change mode; in the specific arrangement, the GRG130 is covered on the wall surface 200 to cover the mounting structures such as the angle iron net rack 110 between the GRG130 and the wall surface 200, and the attractiveness is improved; the GRG130 is fixedly connected with the angle iron net rack 110, so that the GRG130 is fixed relative to the wall surface 200; designing a grinding tool according to the requirements of a customer on the shape, size and the like of a plurality of first light holes 131, and performing fluid pre-casting to prepare the GRG130 so as to realize the arrangement form of the first light holes 131 on the GRG130, wherein the plurality of first light holes 131 are distributed on the side wall of the GRG130 in a gradual change manner to form a relatively beautiful shape, for example, the plurality of first light holes 131 form a wavy shape, for example, the plurality of first light holes 131 form a petal-shaped shape, for example, the plurality of first light holes 131 form a character-shaped shape; the sizes of the first light-transmitting holes 131 may be the same, the sizes of the first light-transmitting holes 131 may be different, and a part of the first light-transmitting holes 131 may have the same size and another part may have different sizes.

The fireproof base layer 140 is arranged on the surface of the GRG130 facing the angle iron net rack 110, and the fireproof base layer 140 avoids the first light-transmitting hole 131; in specific setting, the fire-proof base layer 140 may be fixed on the surface of the GRG130 facing the angle iron net rack 110 by an adhesive, the fire-proof base layer 140 may be fixed on the surface of the GRG130 facing the angle iron net rack 110 by mechanical connection methods such as snap connection, threaded connection, concave-convex fit, and the setting method of the fire-proof base layer 140 on the surface of the GRG130 facing the angle iron net rack 110 is determined according to the actual situation of the GRG lighting device 100; first light trap 131 can be dodged through drilling or mode such as dodge attached to fire prevention basic unit 140 to avoid fire prevention basic unit 140 to influence the seeing through of light, of course, fire prevention basic unit 140 still can be for the printing opacity material, and at this moment, the protection basic unit covers GRG130 towards the surface of angle steel rack 110.

In the GRG lighting device 100, the angle iron net mount 110 supports the GRG130, fixes the GRG130 to the wall surface 200, and by forming the plurality of first light holes 131 on the side wall of the GRG130 and limiting the gradual distribution of the first light holes 131 on the side wall of the GRG130, and simultaneously, the fireproof base layer 140 avoids the first light holes 131, so that the light emitted by the lamp strip 120 is emitted through the first light holes 131, and the GRG130 model, the plurality of first light holes 131 model and the lamp light are combined into a whole on the basis of satisfying the lighting effect, so that the decorative effect is improved, and the overall aesthetic degree is better; through at GRG130 towards angle iron net rack 110 on the surface set up fire prevention basic unit 140 to improve fire prevention effect, GRG130 is stretched when avoiding taking place the conflagration, improves the erectability, the extension time of fleing.

To facilitate installation of the GRG130, as shown in fig. 2, in a preferred embodiment, the GRG130 includes a plurality of mold plates 132, the mold plates 132 are joined to form the GRG130, each mold plate 132 has a connecting plate 133 embedded therein, and the connecting plate 133 is fixed to the angle iron frame 110 by a first fastener 134.

In the GRG lighting device 100 described above, the GRG130 is provided to include a plurality of mold plates 132, and the plurality of mold plates 132 are joined to form the GRG130, so as to facilitate processing, transportation, and installation of the GRG 130; through pre-buried connecting plate 133 on every moldboard 132, need not to the on-spot secondary operation of GRG130 to the hoist and mount construction of GRG130, connecting plate 133 is fixed on angle iron net rack 110 through first fastener 134, can realize moldboard 132 and angle iron net rack 110's connection more convenient and fast, the installation of GRG130 of being convenient for. In a specific arrangement, the connecting plate 133 may be made of the same material as the mold plate 132, and the connecting plate 133 and the mold plate 132 are integrally molded, so that the connecting plate 133 may be made of a different material from the mold plate 132, the connecting plate 133 may have a structure form such as angle steel or steel plate, and the specific structure form of the connecting plate 133 may be determined according to the actual condition of the GRG lighting device 100.

In order to facilitate splicing of the plurality of mold plates 132 to form the GRG130, as shown in fig. 2, specifically, the plurality of mold plates 132 are spliced and fixed by a connecting assembly 150, the connecting assembly 150 includes corner connectors 151 and second fastening members 152, two adjacent mold plates 132 are spliced and arranged, and the corner connectors 151 are pressed on two adjacent mold plates 132 and fixed on two adjacent mold plates 132 by the second fastening members 152.

In the GRG lighting device 100, the two mold plates 132 are crimped together by the corner key 151 so that the two mold plates 132 are joined together; the two moldboards 132 are fixed by pressing the corner bridge 151 on one moldboard 132 and fixing the two ends of the corner bridge 151 to the two adjacent moldboards 132 by the two second fasteners 152. In a specific arrangement, the number of the connecting assemblies 150 for splicing and fixing the two adjacent moldboards 132 may be one, two, three, four or more, and the specific number of the connecting assemblies 150 for splicing and fixing the two adjacent moldboards 132 may be determined according to the actual situation of the GRG lighting device 100.

The first and second fastening

members

134 and 152 may have various structural forms, and more specifically, the first fastening member 134 may be an expansion screw, and the second fastening member 152 may be a screw. Of course, the structural form of the first fastening member 134 and the second fastening member 152 is not limited to this, and may be other structural forms that can meet the requirements.

In the GRG lighting device 100, by defining the first fastening member 134 as an expansion screw, the connection plate 133 and the angle iron net rack 110 are provided with a threaded hole in advance, so that the fixed connection between the connection plate 133 and the angle iron net rack 110 can be conveniently and quickly realized; by defining the second fasteners 152 as screws, threaded holes are pre-formed in the corner connectors 151 and the moldboard 132 to allow for a secure connection between the corner connectors 151 and the moldboard 132 to be easily and quickly accomplished. In a specific arrangement, the number of the expansion screws for the fixed connection between the connection plate 133 and the angle frame 110 may be one, two or more, and the specific number of the expansion screws for the fixed connection between the connection plate 133 and the angle frame 110 may be determined according to the actual situation of the GRG lighting device 100, and also, the number of the expansion screws for the fixed connection between the corner bridge 151 and the mold plate 132 may be one, two or more, and the specific number of the expansion screws for the fixed connection between the corner bridge 151 and the mold plate 132 may be determined according to the actual situation of the GRG lighting device 100.

In order to further improve the decorative effect, specifically, as shown in fig. 2, the first light-transmitting holes 131 on two adjacent moldboards 132 include a first circular arc 135 and a second circular arc 136, central axes of the first circular arc 135 and the second circular arc 136 are coincident, and the first circular arc 135 and the second circular arc 136 form a closed annular structure.

In the GRG lighting device 100, the first light holes 131 on two adjacent mold plates 132 are limited to form a closed annular structure by the first arc 135 and the second arc 136, and the central axes of the first arc 135 and the second arc 136 are limited to coincide with each other, so that the first arc 135 and the second arc 136 are precisely butted, the structure of the first light holes 131 is attractive, the attractive appearance of the plurality of first light holes 131 on the whole GRG130 after the plurality of mold plates 132 are spliced is ensured, and a good decorative effect is achieved. In a specific arrangement, all the first light holes 131 may be disposed in the mold plate 132, so as to facilitate processing, installation, and fixation, and simplify the manufacturing process, and a portion of the first light holes 131 may be disposed inside the mold plate 132, and another portion of the first light holes 131 may be disposed at the edge of the mold plate 132, at this time, the first circular arc 135 and the second circular arc 136 are respectively located at the edge of two adjacent mold plates 132, and when the two mold plates 132 are spliced, the closed first light holes 131 are formed.

In order to further achieve the light transmission effect, as shown in fig. 3, in a preferred embodiment, at least one second light hole 150 is formed in the bottom wall of the GRG130, the second light hole 150 is a strip-shaped structure, a light-transmitting plate 160 is attached to the bottom wall of the GRG130, and the light-transmitting plate 160 covers the second light hole 150.

In the GRG lighting device 100, at least one second light hole 150 is formed in the bottom wall of the GRG130, and the second light hole 150 is defined to have a long strip-shaped structure, so that more light can be transmitted through the second light hole 150, thereby improving the lighting effect of the GRG lighting device 100; by attaching the light-transmitting plate 160 on the bottom wall of the GRG130 and defining that the light-transmitting plate 160 covers the second light-transmitting hole 150, the structure of the GRG130 is beautiful, and the decorative effect is ensured. When the second light-transmitting hole 150 is specifically arranged, the second light-transmitting hole may be a strip-shaped structure, the strip-shaped structure may be a streamline shape, an S-shape, a wave shape, an arc shape, or the like, and the strip-shaped structure may also be other structural forms capable of meeting the appearance requirement; of course, the structural form of the second light-transmitting hole 150 is not limited to the above-mentioned elongated structure, and may be other structural forms that can meet the requirement, for example, the structural form of the second light-transmitting hole 150 is a circular structure, an oval structure, and the like. It should be noted that the light-transmitting plate 160 is not limited to be disposed on the bottom wall of the GRG130, and the light-transmitting plate 160 may be disposed at the position of the first light-transmitting hole 131, and the light-transmitting plate 160 may be an acrylic plate, or may be other structural forms capable of meeting the requirement. The light-transmitting plate 160 may be attached to a side of the bottom wall of the GRG130 facing the wall surface 200 through an adhesive, and the light-transmitting plate 160 may be further embedded in the second light-transmitting hole 150.

The fire-retardant substrate 140 has various structural forms, and in a preferred embodiment, the fire-retardant substrate 140 may be a glass magnesium board. Of course, the fire-proof substrate 140 is not limited to the above-mentioned glass magnesium board, and may be in other structural forms that can meet the requirements.

In the GRG lighting device 100, the glass magnesium board is composed of magnesium oxide (MgO), magnesium chloride (MgCl2), alkali-resistant glass fiber cloth, plant fibers, non-combustible light perlite, high molecular polymers, high-performance modifiers and the like, so that the GRG lighting device 100 has the advantages of high temperature resistance, flame retardance, sound absorption, shock resistance, corrosion resistance, no toxicity, no odor, no pollution, high strength, bending resistance, toughness and the like, and the fire-proof effect of the GRG130 is better by limiting the fire-proof base layer 140 to be the glass magnesium board, thereby improving the overall fire-proof effect of the GRG lighting device 100.

Because most high-rise fires have strideed across vertical fire prevention subregion from the initial region, spread the extension in whole building height within range, form three-dimensional conflagration to personnel and the property that lead to whole building receive very big threat, from the perspective of fire control safety, the fire prevention shutoff between the layer has become indispensable, but fire prevention shutoff technique in the past, fire prevention plugging material fire-resistant limit is low when the conflagration, easily drops, and dense cigarette effect is limited, is not durable. The utility model discloses an improve the fire prevention effect, a preferred embodiment, as shown in fig. 3, GRG lighting device 100 still includes sealed glue 170 of fire prevention, is equipped with rock wool 180 in the gap between GRG130 and the wall 200, and rock wool 180 has sealed glue 170 of fire prevention with GRG130 and wall 200 relative the coating respectively on the surface.

In the GRG lighting device 100, since the rock wool 180 has the advantages of light weight, very small coefficient of thermal conductivity, good elasticity, difficulty in combustion, difficulty in decay, strong chemical stability, good sound insulation performance and the like, the rock wool 180 is arranged in the gap between the GRG130 and the wall surface 200 to improve the fireproof effect; because the fireproof sealant 170 has a certain expansion capability (displacement capability), the fireproof effect can be further improved by respectively coating the fireproof sealant 170 on the surfaces of the rock wool 180, the GRG130 and the wall surface 200 which are opposite to each other. In the specific arrangement, the rock wool 180 may be a highly compressed plate rock wool 180, or may be another structural form capable of meeting the requirements, and a suitable compression ratio of the rock wool 180 is selected according to the fire protection requirement of the GRG lighting device 100; the fireproof sealant 170 can be elastic fireproof sealant 170, and can also be in other structural forms capable of meeting requirements, and the fireproof sealant 170 with the thickness of 3mm is coated on the rock wool 180, so that the problems that an interlayer plugging material is easy to fall off in a fire disaster, lacks of structural stability and poor in smoke resistance can be solved, and the fire resistance, smoke resistance and bonding performance of the interlayer plugging material are guaranteed.

In order to further improve the fireproof effect, as shown in fig. 4, specifically, the GRG130 and the wall surface 200 are fixedly connected by a galvanized steel sheet 190, and the surfaces of the galvanized steel sheet 190 opposite to the GRG130 and the wall surface 200 are respectively coated with a fireproof sealant 170.

In the GRG lighting device 100, the GRG130 and the wall surface 200 are fixedly connected by the galvanized steel sheet 190, so that the connection strength between the GRG130 and the wall surface 200 is enhanced, and the structural stability is improved; the fireproof effect can be further improved by coating the fireproof sealant 170 on the surfaces of the galvanized steel sheet 190 opposite to the GRG130 and the wall surface 200, respectively. In a specific arrangement, the fire-retardant sealant 170 may be an elastic fire-retardant sealant 170, or may be in other structural forms capable of meeting the requirements.

In order to further improve the fire-proof effect, specifically, the surface of the angle iron net frame 110 contacting the wall surface 200 is coated with a fire-proof sealant 170.

In the GRG lighting device 100, the surface of the angle iron grid 110 in contact with the wall surface 200 is coated with the fire-retardant sealant 170, thereby further improving the fire-retardant effect. In a specific arrangement, the fire-retardant sealant 170 may be an elastic fire-retardant sealant 170, or may be in other structural forms capable of meeting the requirements.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A GRG lighting device, fixed on a wall, comprising:

the angle iron net rack is fixedly arranged on the wall surface;

2. The GRG lighting device of claim 1 wherein the GRG comprises a plurality of castors that are assembled to form the GRG, each castor having a connection plate embedded therein, the connection plate being secured to the frame by a first fastener.

3. The GRG lighting device of claim 2 wherein a plurality of the moldboards are secured together by a connecting assembly, the connecting assembly includes a corner brace and a second fastener, two adjacent moldboards are secured together, and the corner brace is pressed onto two adjacent moldboards and secured to the two adjacent moldboards by the second fastener.

4. The GRG lighting device of claim 3 wherein the first fastener is an expansion screw and the second fastener is a screw.

5. The GRG lighting device of claim 2 wherein the first light-transmitting holes in two adjacent castors include a first circular arc and a second circular arc, and the central axes of the first circular arc and the second circular arc are coincident and form a closed ring structure.

6. The GRG lighting device as claimed in claim 1, wherein the GRG has at least one second light hole formed in a bottom wall thereof, the second light hole is a strip-shaped structure, and a light-transmitting plate is attached to the bottom wall of the GRG and covers the second light hole.

7. The GRG lighting device of claim 1 wherein the fire resistant substrate is a glass magnesium board.

8. The GRG lighting fixture of claim 1 further comprising a fire sealant, rock wool disposed in a gap between the GRG and the wall, the rock wool coated on surfaces opposite the GRG and the wall with the fire sealant.

9. The GRG lighting device of claim 8 wherein the GRG and the wall are fixedly attached by a galvanized steel sheet, and the surfaces of the galvanized steel sheet opposite the GRG and the wall are coated with the fire-retardant sealant, respectively.

10. The GRG lighting fixture of claim 8 wherein a surface of the angle iron grid in contact with the wall surface is coated with the fire retardant sealant.