Fire-fighting emergency sign lamp

Abstract

The utility model belongs to the field of fire-fighting equipment, and provides a fire-fighting emergency sign lamp which comprises a shell, an indication panel, a light guide plate and a middle frame. Wherein an accommodating cavity and an exposure window communicated with the accommodating cavity are formed in the shell; the indication panel is arranged in the accommodating cavity and can expose the emergency sign from the exposure window; a plurality of light guide plates are flatly attached to the side, away from the display window, of the indication panel at intervals and used for enabling the emergency sign to emit light. The middle frame forms an annular outer ring and a plurality of inner edges connected to the interior of the outer ring, all the light guide plates are arranged in the outer ring, and the gaps between the adjacent light guide plates are filled with the inner edges; and the middle frame pad is arranged between the indication panel and the shell and enables the indication panel and the shell to form sealed connection. The technical problem that in the prior art, a fire emergency sign lamp is poor in waterproof effect can be solved.

Description

Technical Field

[0001] This application belongs to the field of fire protection equipment, and in particular relates to a fire emergency sign light fixture. Background Technology

[0002] In industrial or infrastructure sites such as large factories, warehouses, tunnels, corridors, and power plants, traditional fire emergency sign lights often cannot withstand long-term humid environments due to high humidity and the possibility of water splashing or leakage. This can lead to moisture penetrating into the lights, causing problems such as short circuits, indicator light damage, or reduced brightness. Utility Model Content

[0003] The purpose of this application is to provide a fire emergency sign light fixture to solve the technical problem of poor waterproofing effect of existing fire emergency sign light fixtures.

[0004] To achieve the above objectives, the technical solution adopted in this application is: to provide a fire emergency sign light fixture, comprising:

[0005] The housing forms a receiving cavity and an exposure window communicating with the receiving cavity;

[0006] An indicator panel is disposed within the receiving cavity and allows emergency signs to be displayed through the display window;

[0007] A light guide plate is attached at intervals on the side of the indicator panel opposite to the display window and is used to make the emergency sign illuminate.

[0008] The middle frame forms an annular outer ring and several inner edges connected inside the outer ring. All the light guide plates are disposed inside the outer ring. The inner edges fill the gaps between adjacent light guide plates. The middle frame is placed between the indicator panel and the housing to form a sealed connection between the indicator panel and the housing.

[0009] Compared with the prior art, the beneficial effects of the fire emergency sign light fixture in this application are as follows: In the fire emergency sign light fixture provided in this application, the middle frame used to support the exposed window on the closed housing of the indicator panel not only uses the outer ring to protect all the light guide plates, but also fills the gap between adjacent light guide plates by connecting the inner edge on the outer ring. This not only effectively prevents water vapor from contacting the light guide plates, but also significantly reduces the remaining gap in the housing cavity and effectively prevents water vapor from condensing in the housing cavity. As a result, the fire emergency sign light fixture provided in this application can form a better waterproof effect, which is far superior to the prior art.

[0010] Optionally, the fire emergency sign light further includes a light source attached to the light guide plate and a controller electrically connected to the light source; the gap between the light source and the controller, as well as the gap between the controller and the light guide plate, are filled by the inner edge. In this design, by filling the gap between the light source and the controller, and between the controller and the light guide plate, the remaining gap in the receiving cavity can be further reduced, and water vapor can be effectively prevented from condensing in the receiving cavity. This helps to further improve the waterproof effect of the fire emergency sign light fixture in this application.

[0011] Optionally, the fire emergency sign light fixture also includes several sets of matching screws and nuts; the nuts are disposed on the outside of the housing, and the screws are disposed within the receiving cavity and pass through the middle frame and the housing in sequence to be threadedly connected with the nuts. In this design, the mutual cooperation of the screws and nuts can significantly increase the contact pressure between the middle frame and the housing, thus creating a better sealing connection between them and further improving the waterproof effect of the fire emergency sign light fixture in this application.

[0012] Optionally, the housing has an annular groove recessed along the axial direction of the exposed window on its outer surface opposite to the exposed window; the nut is disposed within the annular groove. In this design, the annular groove formed on the housing provides protection for the nut inside, effectively improving the installation stability of the middle frame; it also effectively prevents external moisture from entering the receiving cavity from the connection between the screw and the housing, thus further improving the waterproof effect of the fire emergency sign light fixture in this application.

[0013] Optionally, the fire emergency sign light fixture further includes a plurality of pressure plates extending along the outer ring contour; each pressure plate is provided with at least two holes for the screws to pass through, and the middle frame is clamped between the pressure plate and the housing. In this solution, by connecting at least two screws on the pressure plate, the pressure plate and the housing can form a more stable clamping effect on the middle frame, which is beneficial to further improve the waterproof effect of the fire emergency sign light fixture in this application.

[0014] Optionally, the indicator panel is placed between the pressure plate and the middle frame, and the indicator panel is provided with several clearance holes for the screws to pass through. In this solution, placing the indicator panel between the pressure plate and the middle frame can create a better sealing effect between the indicator panel and the middle frame, which can further prevent moisture from entering between the indicator panel and the middle frame, and help to further improve the waterproof effect of the fire emergency sign light fixture in this application.

[0015] Optionally, the housing has a first wiring groove and a second wiring groove recessed along the axial direction of the exposed window on its outer surface away from the exposed window. The first wiring groove is located near the edge of the housing and forms an opening perpendicular to the exposed window on the side away from the center of the housing. The second wiring groove connects to the first wiring groove and extends from the first wiring groove to the central area of ​​the housing. This design, by providing the first and second wiring grooves, not only allows the fire emergency sign light fixture to be adapted to different wiring methods in various situations, but also allows the side of the housing away from the exposed window to more fully contact the target wall. This significantly reduces the direct contact area between the housing and moisture, thereby further improving the waterproof effect of the fire emergency sign light fixture.

[0016] Optionally, the fire emergency sign light fixture further includes a terminal block electrically connected to the controller; the terminal block passes through the housing at least twice and at least a portion of the terminal block is located within the receiving cavity. In this design, by passing through the housing at least twice and ensuring at least a portion of the terminal block is located within the receiving cavity, the terminal block effectively isolates the circuit components inside and outside the housing, thus further improving the waterproof performance of the fire emergency sign light fixture in this application.

[0017] Optionally, the housing further forms a movable groove spaced apart from the first wiring groove; the two ends of the terminal are respectively disposed in the first wiring groove and the movable groove, and the fire emergency sign light fixture also includes a sealing ring disposed in the movable groove. The sealing ring is fitted onto the terminal and forms a sealed connection between the terminal and the housing. In this solution, the sealing ring fitted onto the terminal can effectively prevent moisture from entering the receiving cavity from the connection between the terminal and the housing, which helps to further improve the waterproof effect of the fire emergency sign light fixture in this application.

[0018] Optionally, at least a portion of the housing is formed with a mesh structure. In this design, setting a mesh structure on the housing significantly improves its structural strength and prevents deformation that could lead to sealing failure with other structures, thus further enhancing the waterproof performance of the fire emergency sign light fixture in this application. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is an exploded structural diagram of a fire emergency sign light fixture provided in an embodiment of this application;

[0021] Figure 2 A partial structural schematic diagram of the housing provided in an embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the overall structure of the middle frame provided in an embodiment of this application;

[0023] Figure 4 A rear view structural diagram of the fire emergency sign light fixture provided in the embodiments of this application;

[0024] Figure 5 This is a schematic diagram of the overall structure of the fire emergency sign light fixture provided in the embodiments of this application.

[0025] The following are the labeling elements in the figure:

[0026] 100. Housing; 101. Receiving cavity; 102. Exposed window; 103. Annular groove; 104. First wiring groove; 105. Second wiring groove; 106. Movable groove; 107. Grid structure; 200. Indicator panel; 201. Emergency sign; 202. Clearance hole; 301. Light guide plate; 302. Light source; 303. Controller; 304. Terminal block; 400. Middle frame; 401. Outer ring; 402. Inner edge; 501. Screw; 502. Nut; 600. Pressure plate; 700. Sealing ring. Detailed Implementation

[0027] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0029] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0031] Please refer to the following: Figure 1 , Figure 2 and Figure 3 The present application provides a fire emergency sign light fixture according to an embodiment. This fire emergency sign light fixture includes a housing 100, an indicator panel 200, a light guide plate 301, and a middle frame 400. Wherein:

[0032] The housing 100 forms a receiving cavity 101 and an exposure window 102 communicating with the receiving cavity 101. The housing 100 described in this embodiment is a commonly used external housing 100 for fire emergency sign lights in the art. It is usually set in a rectangular or elliptical shape and can be manufactured by all-plastic injection molding. The material is not conductive and has a smooth surface that is not easily worn, which makes the fire emergency sign light in this embodiment lightweight, thin, and aesthetically pleasing. In addition, the housing 100 can be constructed by detachably connecting two parts, such as a front panel and a rear panel. The detachable connection method can be the snap-fit ​​or riveting method commonly used in the art, which makes the internal structure of the housing 100 easy to maintain. For ease of explanation, this embodiment uses a housing 100 with two detachably connected parts as an example.

[0033] An indicator panel 200 is disposed within a receiving cavity 101 and can display an emergency sign 201 through a display window 102. In this embodiment, the emergency sign 201 on the indicator panel 200 can be flexibly customized according to actual fire protection needs. A light guide plate 301 is flatly attached at intervals on the side of the indicator panel 200 opposite to the display window 102 and is used to illuminate the emergency sign 201. It is understood that the light guide plate 301 in this embodiment is a commonly used light guide structure in the art. It does not emit light itself, but rather works in conjunction with corresponding point light sources 302 to make the emergency sign 201 emit light uniformly. Its overall size is usually much larger than the light source 302 and adapted to the size of the indicator panel 200. Therefore, in specific implementations, the receiving cavity 101 should also be equipped with a light source 302 and circuitry, etc. These structural designs are commonly used techniques in the art and will not be elaborated upon here.

[0034] The middle frame 400 forms an outer ring 401 and several inner edges 402 connected inside the outer ring 401. All light guide plates 301 are disposed inside the outer ring 401. The inner edges 402 fill the gaps between adjacent light guide plates 301. The middle frame 400 is placed between the indicator panel 200 and the housing 100, forming a sealed connection between the indicator panel 200 and the housing 100. In this embodiment, the outer ring 401 can be flexibly set into a square ring, circular ring, or elliptical ring shape according to the shape of the indicator panel 200 or the housing 100. The inner edges 402 inside can be flexibly set according to the gaps between adjacent light guide plates 301, resulting in a more complete filling effect.

[0035] According to the structure provided in this embodiment, in the fire emergency sign light provided in this embodiment, the middle frame 400 for supporting the exposed window 102 on the enclosed housing 100 of the indicator panel 200 not only forms protection for all the light guide plates 301 with the annular outer ring 401, but also fills the gap between adjacent light guide plates 301 by the inner edge 402 connected to the outer ring 401. Since the gap between the light guide plates 301 is relatively large, this can not only effectively prevent water vapor from contacting the light guide plates 301, but also significantly reduce the remaining gap in the receiving cavity 101 and effectively prevent water vapor from condensing in the receiving cavity 101. Thus, the fire emergency sign light provided in this embodiment can form a better waterproof effect, which is far superior to the prior art.

[0036] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1 , Figure 2 and Figure 3 The fire emergency sign 201 light also includes a light source 302 attached to the light guide plate 301 and a controller 303 electrically connected to the light source 302; the gap between the light source 302 and the controller 303 and the gap between the controller 303 and the light guide plate 301 are filled by the inner edge 402.

[0037] In this embodiment, the light source 302, which is closely attached to the light guide plate 301, can be a commonly used LED point light source in the art. By cooperating with the light guide plate 301, the light can be dispersed more evenly, which is beneficial for the emergency sign 201 to emit light more evenly. The controller 303 connected to the light source 302 can supply power to the light source 302 by connecting to an external circuit. Its circuit structure is a commonly used technical means in the art and will not be described in detail here.

[0038] According to the structure provided in this embodiment, by filling the space between the light source 302 and the controller 303 and between the controller 303 and the light guide plate 301 with the inner edge 402 connected to the outer ring 401, the remaining gap in the receiving cavity 101 can be further reduced and water vapor can be effectively prevented from condensing in the receiving cavity 101. This is beneficial to further improve the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0039] It is understood that in this embodiment, one controller 303 can be provided, while multiple light sources 302 can be provided. Thus, the inner edge 402 connected to the outer ring 401 can further reduce the remaining gap in the receiving cavity 101 by filling the gap between adjacent light sources 302. Furthermore, in the blank portion of the receiving cavity 101 where neither the controller 303 nor the light source 302 is provided, the inner edge 402 can be extended to have a larger width, further reducing the remaining gap in the receiving cavity 101. This is beneficial for further improving the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0040] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1 , Figure 2 and Figure 3 The fire emergency sign light fixture also includes several sets of matching screws 501 and nuts 502; the nuts 502 are located on the outside of the housing 100, and the screws 501 are located in the receiving cavity 101 and pass through the middle frame 400 and the housing 100 in sequence to be threadedly connected to the nuts 502.

[0041] According to the structure provided in this embodiment, since the screw 501 and the nut 502 are connected by a threaded connection, and since the screw 501 is located inside the receiving cavity 101 and passes through the middle frame 400 and the housing 100 to be threadedly connected to the nut 502, the fire emergency sign light fixture in this embodiment can be tightly fixed to the housing 100 by adjusting the screw 501 relative to the nut 502 during the factory and subsequent maintenance processes. This can create a better sealing connection between the middle frame 400 and the housing 100, which is beneficial to further improve the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0042] It is understood that in this embodiment, the middle frame 400 is fastened to the housing 100 by screws 501 and nuts 502, utilizing the principle that the screws 501 can cooperate with the nuts 502 to make the middle frame 400 more securely installed. Therefore, other connection methods in the art that can lock and fix the middle frame 400 to the housing 100 can also achieve the same technical effect as this embodiment. For example, the middle frame 400 and the housing 100 can be provided with threaded holes with opposite thread directions. In this way, when the screws 501 are installed in the two threaded holes, the middle frame 400 and the housing 100 can move closer or further apart synchronously, thus achieving the technical effect of fastening the middle frame 400.

[0043] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 4 and Figure 5 The housing 100 has an annular groove 103 formed by recessing along the axial direction of the exposure window 102 on the outer surface of the housing 100 on the side opposite to the exposure window 102, and the nut 502 is disposed in the annular groove 103.

[0044] According to the structure provided in this embodiment, the annular groove 103 formed on the housing 100 can protect the nut 502 inside, thereby effectively improving the installation stability of the middle frame 400. On the other hand, since the side of the housing 100 away from the exposed window 102 usually abuts against the target wall, the annular groove 103 formed by the axial recess along the exposed window 102 can be directly facing the target cavity after the housing 100 is installed and fixed. This can effectively prevent external moisture from entering the receiving cavity 101 from the connection between the screw 501 and the housing 100, thereby further improving the waterproof effect of the fire emergency sign light in this embodiment.

[0045] It is understood that in this embodiment, one or more annular grooves 103 can be provided corresponding to the position of the nut 502. The shape of the annular groove 103 can be set as a square ring, a circular ring, an elliptical ring, etc., according to the edge contour of the housing 100. In addition, it should be noted that in order to form a better protective effect, the depth of the annular groove 103 can be set to be greater than the thickness of the nut 502, thereby effectively preventing the nut 502 from contacting other structures.

[0046] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1 , Figure 2 and Figure 3 The fire emergency sign light fixture also includes several pressure plates 600 extending along the outline of the outer ring 401; each pressure plate 600 is provided with at least two holes through which screws 501 pass, and the middle frame 400 is clamped between the pressure plate 600 and the housing 100.

[0047] According to the structure provided in this embodiment, the layout design of the pressure plate 600 extending along the outline of the outer ring 401, combined with the structural design of at least two screw holes 501 on each pressure plate 600, can make the contact surface between the middle frame 400 and the housing 100 more uniform. This can effectively eliminate the stress concentration phenomenon caused by the traditional single-point fixing method, and can also make the middle frame 400 and the housing 100 form a better sealing effect, which is conducive to further improving the waterproof effect of the fire emergency sign light fixture in this application.

[0048] It is understood that the shape of the pressure plate 600 in this embodiment is not limited, and can be a flat structure or an "L"-shaped structure commonly used in the art. The "L"-shaped pressure plate 600 can abut against the middle frame 400 through its angled sides, thus better fixing the relative positional relationship between the pressure plate 600 and the middle frame 400. Furthermore, the thickness of the pressure plate 600 is not limited; in specific implementations, the thickness of the pressure plate 600 can be flexibly customized according to the space within the receiving cavity 101, which will not be elaborated upon here.

[0049] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 1 , Figure 2 and Figure 3 The indicator panel 200 is placed between the pressure plate 600 and the middle frame 400, and the indicator panel 200 is provided with several clearance holes 202 for the screw 501 to pass through.

[0050] According to the structure provided in this embodiment, the indicator panel 200 is placed between the pressure plate 600 and the middle frame 400, which can create a better sealing effect between the indicator panel 200 and the middle frame 400. This can further prevent moisture from entering between the indicator panel 200 and the middle frame 400, and help to further improve the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0051] It is understood that the shape of the clearance hole 202 provided on the indicator panel 200 in this embodiment is not limited. It can be selected as a round hole, square hole, or elliptical hole commonly used in the art, and can also be flexibly adapted according to the shape of the screw 501. In addition, the clearance hole 202 can be provided for all the screws 501 or for a portion of the screws 501, with similar technical effects. In specific implementation, it can be set more flexibly according to the remaining space in the receiving cavity 101, which will not be elaborated in detail here.

[0052] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 4 and Figure 5On the outer surface of the housing 100 on the side opposite to the exposure window 102, a first wiring groove 104 and a second wiring groove 105 are recessed along the axial direction of the exposure window 102. The first wiring groove 104 is close to the edge of the housing 100 and forms an opening perpendicular to the exposure window 102 on the side away from the center of the housing 100. The second wiring groove 105 is connected to the first wiring groove 104 and extends from the first wiring groove 104 to the central region of the housing 100.

[0053] According to the structure provided in this embodiment, the first wiring trough 104 and the second wiring trough 105 not only enable the fire emergency sign light fixture in this embodiment to be suitable for different contact methods in different situations, but also enable the side of the housing 100 away from the exposed window 102 to more fully abut against the target wall. This can significantly reduce the direct contact area between the housing 100 and water vapor, thereby further improving the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0054] It is understood that the shapes of the first wiring trough 104 and the second wiring trough 105 in this embodiment are not limited and can be flexibly set according to the common wiring methods of fire emergency sign lights in the art. As a preferred embodiment, the first wiring trough 104 is located at the edge of the housing 100, while the second wiring trough 105 extends to the central area of ​​the housing 100, allowing for a more flexible installation effect for the fire emergency sign light in this embodiment. Furthermore, the second wiring trough 105 in this embodiment can also achieve better structural strength by incorporating reinforcing ribs. The side of the housing 100 facing away from the exposed window 102 can be set as a plane, allowing the side of the housing 100 facing away from the exposed window 102 to more fully abut against the target wall and significantly reducing the direct contact area between the housing 100 and moisture, thus further improving the waterproof effect of the fire emergency sign light in this embodiment.

[0055] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 4 and Figure 5 The fire emergency sign light also includes a terminal block 304 electrically connected to the controller 303; the terminal block 304 passes through the housing 100 at least twice and at least a portion of the terminal block 304 is located in the receiving cavity 101.

[0056] According to the structure provided in this embodiment, the wiring terminal 304 can effectively isolate the circuit components inside and outside the housing 100 by passing through the housing 100 at least twice and placing at least a portion of the wiring terminal 304 in the receiving cavity 101. The circuit located outside the housing 100 and the circuit located inside the housing 100 can be connected through the wiring terminal 304 without direct connection, which is beneficial to further improve the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0057] It is understood that the terminal block 304 described in this embodiment can be a bolt structure commonly used in the art. The terminal block 304, through a threaded connection with the housing 100, can stably clamp the lead wire used to connect to the terminal block 304 between the bolt nut and the housing 100. It should also be noted that typically two terminal blocks 304 are required to accommodate commonly used live and neutral wires. Therefore, the two terminal blocks 304 can be connected via a connecting plate, which helps to maintain better synchronous movement between the terminal blocks 304.

[0058] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 4 and Figure 5 The housing 100 also forms a movable groove 106 spaced apart from the first wiring groove 104; the two ends of the terminal 304 are respectively disposed in the first wiring groove 104 and the movable groove 106; the fire emergency sign light also includes a sealing ring 700 disposed in the movable groove 106, the sealing ring 700 is fitted on the terminal 304 and forms a sealed connection between the terminal 304 and the housing 100.

[0059] According to the structure provided in this embodiment, the sealing ring 700 fitted on the terminal block 304 can effectively prevent moisture from entering the receiving cavity 101 from the connection between the terminal block 304 and the housing 100, which helps to further improve the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0060] It is understood that in this embodiment, the sealing effect between the terminal 304 and the housing 100 can be improved by fitting multiple sealing rings 700 onto the terminal 304. The sealing rings 700 can be all disposed in the movable groove 106, or distributed in the movable groove 106 and the first wiring groove 104. Furthermore, to fix the sealing rings 700 and maintain the sealing effect, corresponding fixing structures can be provided in the movable groove 106 and / or the first wiring groove 104, which will not be elaborated upon here.

[0061] In another embodiment of this application, please refer to [the relevant document / reference]. Figure 4 and Figure 5 At least a portion of the mesh structure 107 is formed on the shell 100.

[0062] According to the structure provided in this embodiment, by setting the mesh structure 107 on the housing 100, the structural strength of the housing 100 can be significantly improved and the deformation of the housing 100 can be avoided, which would lead to sealing failure with other structures. This is beneficial to further improve the waterproof effect of the fire emergency sign light fixture in this embodiment.

[0063] It is understood that the shape of the grid structure 107 formed on the housing 100 in this embodiment is not limited and can be flexibly set according to the shape of the housing 100. For ease of explanation, this embodiment takes the distribution of the grid structure 107 along the annular direction as an example.

[0064] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A fire emergency sign light fixture, characterized in that, include: The housing forms a receiving cavity and an exposure window communicating with the receiving cavity; An indicator panel is disposed within the receiving cavity and allows emergency signs to be displayed through the display window; A light guide plate is attached at intervals on the side of the indicator panel opposite to the display window and is used to make the emergency sign illuminate. The middle frame forms an annular outer ring and several inner edges connected inside the outer ring. All the light guide plates are disposed inside the outer ring. The inner edges fill the gaps between adjacent light guide plates. The middle frame is placed between the indicator panel and the housing to form a sealed connection between the indicator panel and the housing.

2. The fire emergency sign light fixture as described in claim 1, characterized in that: The fire emergency sign light also includes a light source attached to the light guide plate and a controller electrically connected to the light source; The gap between the light source and the controller, as well as the gap between the controller and the light guide plate, are filled by the inner edge.

3. The fire emergency sign light fixture as described in claim 1 or 2, characterized in that: The fire emergency sign lights also include several sets of matching screws and nuts; The nut is disposed on the outside of the housing, and the screw is disposed in the receiving cavity and passes through the middle frame and the housing in sequence to be threadedly connected to the nut.

4. The fire emergency sign light fixture as described in claim 3, characterized in that: The housing has an annular groove formed by a recess along the axial direction of the exposed window on its outer surface on the side opposite to the exposed window. The nut is disposed within the annular groove.

5. The fire emergency sign light fixture as described in claim 3, characterized in that: The fire emergency sign light fixture also includes several pressure plates extending along the outer ring contour; Each of the pressure plates is provided with at least two holes through which the screws pass, and the middle frame is clamped between the pressure plate and the housing.

6. The fire emergency sign light fixture as described in claim 5, characterized in that: The indicator panel is positioned between the pressure plate and the middle frame, and the indicator panel has several clearance holes for the screw to pass through.

7. The fire emergency sign light fixture as described in claim 1, characterized in that: The housing also has a first wiring groove and a second wiring groove recessed along the axial direction of the exposed window on the outer surface of the side opposite to the exposed window. The first wiring channel is located near the edge of the housing and forms an opening on the side away from the center of the housing that is perpendicular to the exposure window. The second wiring channel communicates with the first wiring channel and extends from the first wiring channel to the central region of the housing.

8. The fire emergency sign light fixture as described in claim 7, characterized in that: The fire emergency sign light fixture also includes wiring terminals electrically connected to the controller; The terminal block passes through the housing at least twice and positions at least a portion of the terminal block within the receiving cavity.

9. The fire emergency sign light fixture as described in claim 8, characterized in that: The housing also forms a movable groove that is spaced apart from the first wiring groove; The two ends of the terminal block are respectively disposed in the first wiring groove and the movable groove. The fire emergency sign light also includes a sealing ring disposed in the movable groove. The sealing ring is fitted onto the terminal block and forms a sealed connection between the terminal block and the housing.

10. The fire emergency sign light fixture as described in claim 1, characterized in that: At least a portion of the shell has a grid structure formed on it.

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