Explosion-proof emergency sign lamp
By separating the explosion-proof cavity and glass panel components in fire safety signs, the design addresses high costs and safety challenges, achieving reduced volume and lower production costs while maintaining light output and safety.
Patent Information
- Application Number
- CN202422305759.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-09-20
AI Technical Summary
When existing explosion-proof emergency sign lamps meet the requirements of Class II C products, the explosion-proof cavity volume and the glass stress area are large, resulting in high material and production costs and a risk of explosion loss.
The structural design is adopted to have an explosion-proof cavity in the first case, the circuit board and the light source are arranged in the explosion-proof cavity, and the second case is equipped with a storage cavity and is bonded to the tempered glass panel. The light source and the glass panel are arranged separately, and the light rays are derived using the high light transmittance of the glass panel to reduce the volume of the explosion-proof cavity and reduce production costs.
Effectively reduce the volume of the explosion-proof chamber, reduce production costs, and meet product standards and improve safety and brightness display effects.
Smart Images
Figure CN223108499U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of emergency sign lamps, and more specifically, to an explosion-proof emergency sign lamp. Background Art
[0002] At present, in addition to the buried type being circular, the product forms of emergency sign lamps used for fire emergency indication on the market are generally square. For example, the explosion-proof fire emergency lights basically follow the square product form, and there are mainly the following two implementation schemes: One is to fix the tempered glass panel on the front shell, paste it with epoxy resin glue to form a bonding joint surface with the front shell, and use other pressing methods to fix it into a semi-finished component, and then use screws to fix it on the rear shell to form an explosion-proof cavity; in this way, the explosion-proof cavity volume and the glass stress area are large, resulting in the need to make the wall thickness of the shell and the glass thickness very thick, and the material and production costs are very high, and it cannot meet the explosion-proof requirements of Class II C products. The other is to directly bond the tempered glass panel to the rear shell with epoxy resin glue, and then use the front shell to press and fix it to form an inseparable explosion-proof cavity for the whole cavity; in this way, the explosion-proof cavity volume and the glass stress area are large, and the thickness of the shell and the glass also need to be very thick, the cost is high, and because the pressure of the internal explosion can directly push open the bonding joint surface, the risk of losing explosion protection and safety is high.
[0003] It can be seen that considering the size requirements for the graphic panel in relevant product standards, the size of the tempered glass used in existing products is generally relatively large, which results in a very large pressure on the tempered glass when the product explodes internally, and the requirements for the thickness and strength of the glass are very high during design, while ordinary tempered glass cannot meet the use requirements. In addition, considering the explosion-proof requirements in relevant product standards, when the explosion-proof cavity volume of the existing explosion-proof emergency sign lamps ≥ 500CM 3 only Class II A and Class II B products can be made. If Class II C products are to be made, only cylindrical explosion-proof joints or threaded explosion-proof joints can be used for the explosion-proof surface, which results in the need to make the explosion-proof cavity of the sign lamp circular, with a significant increase in cost and low market acceptance. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide an explosion-proof emergency sign lamp in view of the above defects of the prior art.
[0005] The technical solution adopted by the present utility model to solve its technical problems is as follows: An explosion-proof emergency sign lamp, comprising a first housing and a second housing; an explosion-proof chamber is provided inside the first housing, and a through groove communicating with the explosion-proof chamber is provided on the lower side surface of the first housing; a circuit board and a light source are provided inside the explosion-proof chamber, the light source is electrically connected to the circuit board and is opposite to the through groove; a receiving cavity is provided inside the second housing, a tempered glass panel is fitted inside the receiving cavity, and the upper end of the tempered glass panel extends out of the second housing; the second housing is connected to the first housing and is located below the first housing, and the upper end of the tempered glass panel is inserted into the through groove and is opposite to the light source; a hollowed-out pattern for indicating a sign is provided on the front side surface and / or the rear side surface of the second housing, and the brightness area of the tempered glass panel is correspondingly displayed through the hollowed-out pattern.
[0006] In some embodiments, the light source is provided on the lower side surface of the circuit board; the upper part of the second housing is inserted into the through groove and is tightly connected to the first housing by a first fastener.
[0007] In some embodiments, the first housing includes an upper shell and a lower shell, and the upper shell and the lower shell are tightly connected by a second fastener; a cavity is provided inside the lower shell, the through groove is provided on the lower side surface of the lower shell and communicates with the cavity; the circuit board is provided inside the cavity.
[0008] In some embodiments, a front partition and a rear partition are respectively provided inside the cavity, and a gap corresponding to the through groove is formed between the front partition and the rear partition; the circuit board is tightly connected above the front partition and the rear partition by a third fastener, and the light source is located at the gap and the light of the light source passes downward through the gap.
[0009] In some embodiments, a surrounding plate adapted to the cavity is provided on the lower side surface of the upper shell. When the surrounding plate is snapped into the cavity, the upper shell is fitted to the lower shell.
[0010] In some embodiments, a first washer is sleeved on the outer peripheral side wall of the surrounding plate, and a first avoidance groove for accommodating the first washer is correspondingly provided on the upper side surface of the lower shell at the edge of the opening of the cavity.
[0011] In some embodiments, an installation portion extending downward is provided on the lower side surface of the lower shell, the inside of the installation portion is hollow and communicates with the through groove; the second housing and the tempered glass panel are both inserted into the installation portion and are tightly connected to the installation portion by a first fastener.
[0012] In some embodiments, a second washer is sleeved on the upper position of the outer peripheral side wall of the tempered glass panel. When the tempered glass panel is fitted inside the receiving cavity, the second washer is located above the second housing; a second avoidance groove for accommodating the second washer is correspondingly provided on the inner peripheral side wall of the installation portion.
[0013] In some embodiments, the second housing includes a front panel and a rear panel. A first groove is provided on the front side surface of the rear panel, and the tempered glass panel is fitted in the first groove; a second groove is provided on the rear side surface of the front panel, and the rear panel is fitted in the second groove. The tempered glass panel is relatively located between the first groove and the second groove.
[0014] In some embodiments, a wire passing hole communicating with the cavity is provided on the left outer wall or the right outer wall of the lower housing. A sheathed wire is provided in the wire passing hole, and the sheathed wire is electrically connected to the circuit board.
[0015] The beneficial effects of the present utility model are as follows: Different from the prior art, in the explosion-proof emergency sign lamp of the present utility model, an explosion-proof cavity is provided in the first housing, the circuit board and the light source are arranged in the explosion-proof cavity, a containing cavity is provided in the second housing, and a tempered glass panel is fitted in the containing cavity. The second housing is connected to the first housing and is located below the first housing. The upper end of the tempered glass panel is inserted into the through groove and is opposite to the light source; by adopting the structural design of separating the explosion-proof cavity and the tempered glass panel, the flat parts on both sides of the tempered glass panel do not bear the function of the explosion-proof housing, effectively reducing the volume of the explosion-proof cavity. The high light transmittance of the tempered glass panel can be used to directly guide the light of the light source. While meeting the requirements of the product standard, the production and manufacturing cost of the product is also reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is the front view schematic diagram of the explosion-proof emergency sign lamp in the embodiment of the present utility model;
[0017] Figure 2 is the left side view schematic diagram of the explosion-proof emergency sign lamp in the embodiment of the present utility model;
[0018] Figure 3 is a front side view exploded schematic diagram of the explosion-proof emergency sign lamp in the embodiment of the present utility model;
[0019] Figure 4 is another front side view exploded schematic diagram of the explosion-proof emergency sign lamp in the embodiment of the present utility model;
[0020] Figure 5 is the top side view exploded schematic diagram of the explosion-proof emergency sign lamp in the embodiment of the present utility model;
[0021] Figure 6 is the bottom side view exploded schematic diagram of the explosion-proof emergency sign lamp in the embodiment of the present utility model;
[0022] Figure 7 is the side cross-sectional view schematic diagram of the explosion-proof emergency sign lamp in the embodiment of the present utility model;
[0023] Figure 8 It is a front and side view schematic diagram of the second housing in the embodiment of the present utility model;
[0024] Names and serial numbers of the markings in the figure: First housing - 1; Second housing - 2; Explosion - proof cavity - 100; Circuit board - 3; Light source - 4; Tempered glass panel - 5; Hollow pattern - 201; Through - slot - 101; Upper shell - 11; Lower shell - 12; Cavity - 1001; Front partition - 121; Rear partition - 122; Gap - 120; Enclosure - 111; First washer - 112; First avoidance groove - 1002; Mounting part - 13; Second washer - 501; Second avoidance groove - 130; Accommodation cavity - 200; Front panel - 21; Rear panel - 22; First groove - 220; Second groove - 210; Mounting through - hole - 60; Fastening through - hole - 70; Wire - passing hole - 80; Sheathed wire - 90. Detailed implementation manners
[0025] The terms "first", "second", "third", "fourth", etc. in the description, claims and drawings of the present utility model are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non - exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally further includes steps or units not listed, or optionally further includes other steps or units inherent to these processes, methods, products or devices.
[0026] Referring to "embodiment" herein means that a specific feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the present utility model. The phrase appears in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.
[0027] "Plurality" means two or more. "And / or" describes the relationship between associated objects and indicates that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. The character " / " generally represents an "or" relationship between the associated objects before and after.
[0028] Moreover, the orientation terms such as "upper, lower, front, rear, left, right, upper end, lower end" are referenced based on the attitude position of the device or equipment described in this solution during normal use.
[0029] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model. Obviously, the described embodiments are partial embodiments of the present utility model, rather than all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0030] As shown in the embodiments of the present utility model Figures 1 to 8 a flameproof emergency sign lamp includes a first housing 1 and a second housing 2; a flameproof chamber 100 is provided in the first housing 1, and a through groove 101 communicating with the flameproof chamber 100 is provided on the lower side surface of the first housing 1; a circuit board 3 and a light source 4 are provided in the flameproof chamber 100, the light source 4 is electrically connected to the circuit board 3 and is opposite to the through groove 101; a receiving chamber 200 is provided in the second housing 2, a tempered glass panel 5 is fittingly provided in the receiving chamber 200, and the upper end of the tempered glass panel 5 extends out of the second housing 2; the second housing 2 is connected to the first housing 1 and is located below the first housing 1, the upper end of the tempered glass panel 5 is inserted into the through groove 101 and is opposite to the light source 4; a hollowed-out pattern 201 indicating a sign is provided on the front side surface and / or the rear side surface of the second housing 2, and the brightness area of the tempered glass panel 5 is correspondingly displayed through the hollowed-out pattern 201.
[0031] In this embodiment, the through groove 101 is arranged along the length direction of the first housing 1, the direction in which the circuit board 3 is arranged in the flameproof chamber 100 is consistent with the length direction of the through groove 101, the light source 4 is arranged on the lower side surface of the circuit board 3, and the light of the light source 4 can pass downward through the through groove 101. Among them, the light source 4 is an LED lamp bead, and there are multiple LED lamp beads, and the multiple LED lamp beads are arranged side by side and at intervals. The second housing 2 and the tempered glass panel 5 are both arranged and fixed corresponding to the length direction of the through groove 101, and the multiple LED lamp beads are all aligned with the upper end of the tempered glass panel 5, and the light emitted by the multiple LED lamp beads is directly led out by using the high light transmittance of the tempered glass panel 5.
[0032] It should be noted that the description of the high light transmittance of the tempered glass panel 5 in this embodiment is a conventional description in the art for the characteristics of the tempered glass panel 5, and does not limit the light transmittance of the tempered glass panel 5. Those skilled in the art can select and use it according to actual application requirements, and there is no unclear problem.
[0033] Specifically, the first housing 1 includes an upper housing 11 and a lower housing 12. The upper housing 11 and the lower housing 12 are firmly connected by a second fastener. For example, a flange extending horizontally outward is provided at the peripheral edge of the upper side surface of the lower housing 12. A plurality of first screw holes should be provided on the side edges of each side of the flange. Correspondingly, a plurality of second screw holes should be provided on the upper housing 11. The positions and numbers of the plurality of first screw holes correspond one by one to the positions and numbers of the plurality of second screw holes, so as to realize the firm connection between the upper housing 11 and the lower housing 12 through the firm cooperation of the second fastener with the first screw holes and the second screw holes.
[0034] Specifically, a cavity 1001 is provided inside the lower housing 12. The opening of the cavity 1001 faces the upper housing 11. The cavity 1001 is used to accommodate the circuit board 3. The size of the circuit board 3 is adapted to the cavity 1001. When the upper housing 11 and the lower housing 12 are covered and fixed in place, an explosion-proof cavity 100 is formed between the inner side of the upper housing 11 and the cavity 1001. A front partition 121 and a rear partition 122 are respectively provided inside the cavity 1001. The front partition 121 and the rear partition 122 are parallel to each other. The circuit board 3 is firmly connected above the front partition 121 and the rear partition 122 by a third fastener. For example, a screw post is provided on the left side of the front partition 121 and the right side of the rear partition 122 respectively. Correspondingly, third screw holes corresponding to the two screw posts are respectively provided on the circuit board 3. Then, the circuit board 3 can be installed on the front partition 121 and the rear partition 122 through the third fastener. A through groove 101 is opened on the lower side surface of the lower housing 12 and communicates with the cavity 1001; a gap 120 corresponding to the through groove 101 is formed between the front partition 121 and the rear partition 122. The circuit board 3 is disposed inside the cavity 1001, and the light source 4 is located at the gap 120. The light of the light source 4 can be transmitted downward through the gap 120, and then led out by the tempered glass panel 5 and correspondingly displayed through the hollow pattern 201. In this embodiment, the third fastener is a screw.
[0035] Specifically, a surrounding plate 111 adapted to the cavity 1001 is provided on the lower side surface of the upper housing 11. The surrounding plate 111 is integrally formed by enclosing and connecting four side plates. The shape of the four side plates after enclosing is rectangular. When the surrounding plate 111 is snapped into the cavity 1001, the upper housing 11 and the lower housing 12 are attached to each other. Further, a first washer 112 is sleeved on the outer peripheral side wall of the surrounding plate 111. A first avoidance groove 1002 for accommodating the first washer 112 is correspondingly provided on the upper side surface of the lower housing 12 at the edge of the opening of the cavity 1001. When the surrounding plate 111 and the cavity 1001 are in place, the upper housing 11 and the lower housing 12 are attached to each other, and the first washer 112 is correspondingly placed in the first avoidance groove 1002, playing a sealing role.
[0036] In this embodiment, the lower surface of the lower case 12 is provided with a downwardly extending mounting portion 13, and the mounting portion 13 and the lower case 12 are integrally formed and connected. The inside of the mounting portion 13 is hollow and communicates with the through groove 101 for inserting the second housing 2 and the tempered glass panel 5. Both the second housing 2 and the tempered glass panel 5 are inserted into the mounting portion 13 and are fixedly connected to the mounting portion 13 by the first fastener. Further, a second washer 501 is sleeved on the upper position of the outer peripheral side wall of the tempered glass panel 5. When the tempered glass panel 5 is placed in the second housing 2, the second washer 501 is located above the second housing 2; a second avoidance groove 130 for accommodating the second washer 501 is correspondingly provided on the inner peripheral side wall of the mounting portion 13. When the second housing 2 and the tempered glass panel 5 are inserted in place, the second washer 501 is placed in the second avoidance groove 130, which can also play a sealing role.
[0037] In this embodiment, both the first washer 112 and the second washer 501 are made of rubber sealing washers.
[0038] Specifically, the second housing 2 includes a front panel 21 and a rear panel 22, and the front panel 21 and the rear panel 22 are oppositely arranged. A first groove 220 is provided on the front side surface of the rear panel 22, and the tempered glass panel 5 is fittingly disposed in the first groove 220; the thickness of the tempered glass panel 5 is adapted to the depth of the first groove 220, and the width of the tempered glass panel 5 is adapted to the width of the first groove 220, so that the tempered glass panel 5 can be fittingly disposed in the first groove 220. A second groove 210 is provided on the rear side surface of the front panel 21, and the rear panel 22 is fittingly disposed in the second groove 210; the thickness of the rear panel 22 is adapted to the depth of the second groove 210, and the length and width of the rear panel 22 are adapted to the length and width of the second groove 210, so that the rear panel 22 can be fittingly snapped into the second groove 210. The length of the tempered glass panel 5 is such that its upper end is located outside the first groove 220 and the second groove 210 and above the front panel 21 and the rear panel 22. In actual applications, the length of the tempered glass panel 5 can be designed and selected according to actual application requirements, and no specific limitation is made in this embodiment.
[0039] After the front panel 21, the tempered glass panel 5, and the rear panel 22 are assembled in place one by one, the rear side surface of the tempered glass panel 5 is closely attached to the groove wall of the first groove 220, and the front side surface of the tempered glass panel 5 is correspondingly closely attached to the groove wall of the second groove 210, that is, the tempered glass panel 5 is relatively located between the first groove 220 and the second groove 210.
[0040] It can be understood that when the rear panel 22 is disposed on the front panel 21 through the second groove 210, the cavity space formed by the relative position of the first groove 220 and the second groove 210 is the accommodating cavity 200. Taking the tempered glass panel 5 as an example, in this embodiment, the length refers to the data measured along the up and down direction of the tempered glass panel 5, and the width refers to the data measured along the left and right direction of the tempered glass panel 5. Among them, the up, down, left, and right directions are only for illustration purposes.
[0041] In this embodiment, in order to enable the front panel 21, the tempered glass panel 5, and the rear panel 22 to be fixed to the installation part 13 together, a plurality of mutually penetrating installation through holes 60 are correspondingly provided at the upper positions of the front panel 21 and the rear panel 22. The plurality of installation through holes 60 are arranged side by side and at intervals, and a plurality of through holes are also correspondingly formed on the tempered glass panel 5. Correspondingly, a plurality of fastening through holes 70 are provided on the front side wall and the rear side wall of the installation part 13. The plurality of fastening through holes 70 are arranged side by side and at intervals. When the front panel 21, the tempered glass panel 5, and the rear panel 22 are together inserted into the installation part 13 and in place, then the plurality of installation through holes 60 and the plurality of through holes correspond to the plurality of fastening through holes 70 one by one. Furthermore, they can be fastened in the installation through holes 60, the through holes, and the fastening through holes 70 by a corresponding number of first fasteners, so as to realize the fastening connection between the front panel 21, the tempered glass panel 5, and the rear panel 22 and the installation part 13.
[0042] Among them, both the first fastener and the second fastener adopt screws, and the screws are used in cooperation with nuts.
[0043] In this embodiment, hollowed-out patterns 201 with indication marks are provided on both the front panel 21 and the rear panel 22. The hollowed-out pattern 201 on the front panel 21 communicates with its second groove 210, and the hollowed-out pattern 201 on the rear panel 22 communicates with its first groove 220.
[0044] Furthermore, diffusion oil is sprayed or the surfaces are set as matte surfaces on both the front side surface and the rear side surface of the tempered glass panel 5, and the method of spraying diffusion oil or frosting is adopted to increase the reflection and scattering effects of light, so as to improve the brightness of the brightness area of the tempered glass panel 5 corresponding to the hollowed-out pattern 201 and meet the brightness usage requirements.
[0045] In this embodiment, a wire passing hole 80 is further provided on the right outer side wall of the lower case 12. A sheathed wire 90 electrically connected to the circuit board 3 is provided in the wire passing hole 80. In order to improve the sealing performance of the overall product, structural adhesive is used to seal the gap between the sheathed wire 90 and the wire passing hole 80. Correspondingly, the gap between the tempered glass panel 5 and the through groove 101 is also sealed with structural adhesive to ensure the sealed usage performance of the overall product. The position of the wire passing hole 80 is set lower than the upper edge of the tempered glass panel 5, so that the potting of the structural adhesive can be completed at one time, simplifying the potting process. Among them, the structural adhesive adopts transparent epoxy resin adhesive.
[0046] In this embodiment, by improving the explosion-proof form of the explosion-proof emergency sign lamp, the light source 4 and the toughened glass panel 5 are arranged in a structure layout corresponding up and down, and the toughened glass panel 5 and the light source 4 are located in two different casings respectively, so that the front and rear plane parts of the toughened glass panel 5 do not undertake the function of the explosion-proof shell, effectively reducing the volume of the explosion-proof cavity 100, and the high light transmittance of the toughened glass panel 5 can be used to directly lead out the light of the light source 4. While ensuring the brightness display effect of the emergency sign lamp, it helps to reduce the production and manufacturing cost of the product, and is suitable for popularization in production and use.
[0047] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.
Claims
1. An explosion-proof emergency marking lamp, comprising a first housing and a second housing; characterized in that: A flameproof cavity is provided inside the first housing, and a through groove communicating with the flameproof cavity is provided on the lower side surface of the first housing; a circuit board and a light source are provided inside the flameproof cavity, the light source is electrically connected to the circuit board and is opposite to the through groove; a receiving cavity is provided inside the second housing, a tempered glass panel is closely arranged inside the receiving cavity, and the upper end of the tempered glass panel extends out of the second housing; the second housing is connected to the first housing and is located below the first housing, and the upper end of the tempered glass panel is inserted into the through groove and is opposite to the light source; a hollowed-out pattern of an indication mark is provided on the front side surface and / or the rear side surface of the second housing, and the brightness area of the tempered glass panel is correspondingly displayed through the hollowed-out pattern.
2. The flameproof emergency sign luminaire according to claim 1, wherein: The light source is arranged on the lower side surface of the circuit board; the upper part of the second housing is inserted into the through groove and is fixedly connected to the first housing through a first fastener.
3. The flameproof emergency marking luminaire according to claim 2, wherein: The first housing includes an upper shell and a lower shell, and the upper shell and the lower shell are fixedly connected through a second fastener; a cavity is provided inside the lower shell, the through groove is opened on the lower side surface of the lower shell and communicates with the cavity; the circuit board is arranged inside the cavity.
4. The flameproof emergency sign luminaire according to claim 3, wherein: A front partition and a rear partition are respectively provided inside the cavity, and a gap corresponding to the through groove is formed between the front partition and the rear partition; the circuit board is fixedly connected above the front partition and the rear partition through a third fastener, the light source is located at the gap, and the light of the light source passes downward through the gap.
5. The flameproof emergency sign luminaire according to claim 3, characterized in that: A surrounding plate adapted to the cavity is provided on the lower side surface of the upper shell, and when the surrounding plate is snapped into the cavity, the upper shell is in contact with the lower shell.
6. The flameproof emergency sign luminaire according to claim 5, characterized in that: A first washer is sleeved on the outer peripheral side wall of the surrounding plate, and a first avoidance groove for accommodating the first washer is correspondingly provided on the upper side surface of the lower shell at the edge of the opening of the cavity.
7. The flameproof emergency marking luminaire according to claim 3, wherein: An installation part extending downward is provided on the lower side surface of the lower shell, the interior of the installation part is hollow and communicates with the through groove; both the second housing and the tempered glass panel are inserted into the installation part and are fixedly connected to the installation part through a first fastener.
8. The flameproof emergency marking luminaire according to claim 7, characterized in that: A second washer is sleeved at a position on the outer peripheral side wall of the tempered glass panel close to the upper part, and when the tempered glass panel is closely arranged inside the receiving cavity, the second washer is located above the second housing; a second avoidance groove for accommodating the second washer is correspondingly provided on the inner peripheral side wall of the installation part.
9. The flameproof emergency marking luminaire according to any one of claims 1-8, characterized in that: The second housing includes a front panel and a rear panel, a first groove is provided on the front side surface of the rear panel, and the tempered glass panel is closely arranged inside the first groove; a second groove is provided on the rear side surface of the front panel, and the rear panel is closely arranged inside the second groove, and the tempered glass panel is relatively located between the first groove and the second groove.
10. The flameproof emergency sign luminaire according to any one of claims 3-8, characterized in that: A wire passing hole communicating with the cavity is provided on the left outer side wall or the right outer side wall of the lower shell, a sheathed wire is provided inside the wire passing hole, and the sheathed wire is electrically connected to the circuit board.