Fire emergency evacuation indicating device

Abstract

A fire emergency evacuation indication device, comprising an indication lamp body; a reminding assembly arranged inside the indication lamp body to change the indication lamp light; a throwing assembly arranged outside the indication lamp body to throw fire appliances; a smoke exhaust assembly arranged between the two throwing assemblies to blow away smoke; and a projection assembly arranged at the top of the indication lamp body; the advantages of the present application are: 1. the device indicates the direction of the safe passage through the indication lamp body, and cooperates with the reminding assembly to change the light emitted by the indication lamp body, so that people can notice the indication direction in the emergency evacuation state, thereby avoiding running in the wrong direction and delaying the escape time; 2. the device stores some fire appliances, such as fire extinguishers and fire masks, through the throwing assembly, so that people can take the appliances in the emergency evacuation process without needing to find the storage position of the fire appliances.

Description

Technical Field

[0001] The present invention relates to an indicating device, in particular to a fire emergency evacuation indicating device. Background Art

[0002] Building fire protection facilities refer to the equipment and facilities installed within buildings, such as automatic fire alarm systems, automatic sprinkler systems, and fire hydrant systems, used to prevent and extinguish building fires. Commonly used systems include automatic fire alarm systems, automatic sprinkler systems, fire hydrant systems, gas fire extinguishing systems, foam fire extinguishing systems, dry powder fire extinguishing systems, smoke and exhaust systems, and safe evacuation systems. They are crucial facilities for ensuring building fire safety and personnel evacuation, and are a vital component of modern architecture. They play a vital role in protecting buildings and effectively safeguarding the lives of citizens and national property.

[0003] Inside buildings, signs are needed to indicate safe evacuation routes so that people inside can evacuate quickly in the event of danger. The signage currently used consists of a lamp housing, a lamp body, and a green evacuation sign. The lamp body keeps the evacuation sign constantly illuminated, indicating the direction of evacuation and the safe passage. Since the signage is generally installed at a height of less than 1 meter from the ground on both sides of the safe passage, the direction indicated by the arrow is the direction of evacuation. However, in dense smoke and crowded conditions, evacuees may not be able to see the signage due to the smoke and crowds, making it difficult to quickly determine the evacuation direction, which can delay evacuation. Furthermore, the unclear evacuation direction can easily lead to safety hazards such as crowding and trampling.

[0004] In view of the above problems, people need a fire emergency evacuation indicating device to meet people's needs. Summary of the Invention

[0005] The present invention aims to overcome the deficiencies in the prior art and provide a fire emergency evacuation indication device.

[0006] The object of the present invention is achieved like this:

[0007] A fire emergency evacuation indicating device comprises an indicating light body;

[0008] The projection component is arranged on the top of the indicator light body to amplify the evacuation indication direction and project it onto the wall.

[0009] Furthermore, the indicator light body includes an outer shell, a buckle plate, a light-transmitting plate, and a lighting panel. The buckle plate is detachably mounted on the front side of the outer shell. Several indicating grooves are provided through the surface of the buckle plate. The light-transmitting plate is arranged in the indicating grooves. The lighting panel is arranged on the rear side of the inner cavity of the outer shell.

[0010] Further, the buckle plate edge is provided with a plurality of connecting plates, the shell surface is provided with connecting grooves matched with the connecting plates, and the connecting plates are detachably fixed in the connecting grooves through bolts.

[0011] Further, the reminding assembly is arranged inside the indicator lamp body to change the indicator light.

[0012] Further, the reminding assembly comprises a motor, a driving gear, a chain, a light-shielding strip, a support rod and a support gear, the rear side of the shell inner cavity is rotationally connected with a plurality of support rods and the motor, the support gears are arranged on the support rods, the chain is arranged on the outer sides of the support gears, the light-shielding strips are arranged on the chain, the driving gear is arranged on the output shaft of the motor, and the driving gear is in mesh transmission with the chain.

[0013] Further, the support rods are four in number and are distributed in a rectangular shape.

[0014] Further, the smoke exhaust assembly is arranged between the two drop assemblies to blow away smoke.

[0015] Further, the drop assembly comprises a drop box, a buckle cover, a placing box, the drop box is arranged on the two sides of the indicator lamp body, the buckle cover is buckled on the top end of the drop box, the placing box is slidably connected in the inner cavity of the drop box, and the fire-fighting appliance is placed in the placing box.

[0016] Further, the drop assembly further comprises a spring and an electromagnet, the spring is arranged between the bottom surface of the placing box and the inner cavity of the drop box, and the electromagnet is arranged on the bottom surface of the placing box and the inner cavity of the drop box.

[0017] Further, the drop assembly is provided with two, which are respectively located on the two sides of the indicator lamp body.

[0018] Further, the smoke exhaust assembly is arranged between the two drop assemblies to blow away smoke.

[0019] Further, the smoke exhaust assembly is provided with two, which are respectively located on the upper and lower ends between the two drop assemblies.

[0020] Further, the smoke exhaust assembly comprises a mounting plate, a support air duct, a rotating ring, a disturbance fan blade and a fan, the mounting plates are arranged on the inner sides of the two drop assemblies, the support air duct is arranged between the two mounting plates, the rotating rings are rotationally connected on the two ends of the support air duct, the disturbance fan blades are arranged between the two rotating rings, the fan is arranged on the outer side of the drop assembly, the output end of the fan is in communication with the support air duct through a pipeline, and a plurality of air outlets are formed in the side wall of the support air duct.

[0021] Further, the support air duct is a quadrangular prism, and the air outlets are uniformly distributed on the front, rear, upper and lower four sides of the support air duct.

[0022] Further, the projection assembly comprises a top plate, a projection plate, a connecting shaft, a mirror piece, the top plate is arranged on the top of the shell, a projection window is arranged through the top plate, the projection window is arranged with the projection plate, the mirror piece is arranged at two ends of the connecting shaft, and the other end of the connecting shaft is rotationally connected with the top side wall in the shell cavity.

[0023] Further, the mirror piece is arranged below the mirror piece, the included angle between the mirror piece and the mirror piece is an obtuse angle, the lower end of the mirror piece is away from the illumination lamp plate, the top of the shell cavity is arranged with a matching mirror piece, and the matching mirror piece is in the same height with the mirror piece.

[0024] Further, the adjustment assembly is further arranged above the projection assembly, and the angle of the projection assembly is adjusted.

[0025] Further, the adjustment assembly comprises an adjustment telescopic rod, an adjustment shaft and a handle, the adjustment shaft is arranged on one side of the top of the mirror piece, the adjustment shaft is fixedly connected with the movable end of the adjustment telescopic rod, an adjustment slot is arranged through the top plate, the adjustment telescopic rod is rotationally connected with the side wall of the adjustment slot, and the handle is arranged at the top end of the adjustment telescopic rod.

[0026] Advantages of the present application:

[0027] 1. The device enlarges the indication direction to the upper part of the wall through the projection assembly, which is more eye-catching to indicate the direction to the crowd in evacuation, avoids the problem that the evacuation crowd is crowded and the rear personnel cannot see the evacuation direction due to the low installation position of the indication lamp body, reduces the evacuation time delayed due to the failure to see the evacuation direction, and avoids the safety hazards such as crowding and trampling caused by unknown direction.

[0028] 2. The device indicates the direction of the safety channel through the indication lamp body, and cooperates with the reminding assembly to change the light emitted by the indication lamp body, so that people can pay attention to the indication direction in the state of emergency evacuation, thereby avoiding running in the wrong direction and delaying the escape time.

[0029] 3. The device stores some fire fighting equipment such as fire extinguishers and fire masks through the throwing assembly, so that people can take the equipment in the process of emergency evacuation without the need to find the storage position of the fire fighting equipment.

[0030] 4. The device can blow away the smoke near the indication lamp body through the smoke exhaust assembly, so that people can see the indication direction more clearly and avoid running in the wrong direction. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of a fire emergency evacuation indication device.

[0032] Figure 2 It is a structural schematic diagram of an indication lamp body.

[0033] Figure 3 It is a structural schematic diagram of an indication lamp body. Figure 1 .

[0034] Figure 4 It is a structural schematic diagram of an indication lamp body. Figure 2 .

[0035] Figure 5 It is an enlarged schematic diagram of A.

[0036] Figure 6 It is a structural schematic diagram of an indication lamp body. Figure 3 .

[0037] Figure 7 It is a structural schematic diagram of a smoke exhaust assembly.

[0038] Figure 8 It is a structural schematic diagram of a smoke exhaust assembly.

[0039] In the figure: 1. indication lamp body;

[0040] 11. shell, 111. connecting groove, 12. buckle plate, 121. connecting plate, 122. indication groove, 13. light-transmitting plate, 14. illumination lamp plate;

[0041] 2. reminder assembly;

[0042] 21. motor, 22. driving gear, 23. chain, 24. shading strip, 25. support rod, 26. support gear;

[0043] 3. smoke exhaust assembly;

[0044] 31. smoke exhaust assembly, 32. buckle cover, 33. placement box, 34. spring, 35. electromagnet;

[0045] 4. smoke exhaust assembly;

[0046] 41. mounting plate, 42. support air pipe, 43. rotating ring, 44. disturbance fan blade, 45. fan;

[0047] 5. smoke exhaust assembly;

[0048] 51. top plate, 511. projection window, 52. projection plate, 53. connecting shaft, 54. reflecting lens, 55. extending lens, 56. matching lens;

[0049] 6. adjustment assembly;

[0050] 61. adjustment telescopic rod, 62. adjustment shaft, 63. handle. DETAILED DESCRIPTION

[0051] In order for those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor should belong to the scope of protection of the present application.

[0052] The embodiment of the present application provides a fire emergency evacuation indication device.

[0053] Embodiment 1, as shown in Figures 1-8

[0054] A fire emergency evacuation indication device, comprising an indication lamp body 1, indicating the direction of the safety passage, indicating the direction to the crowd in evacuation.

[0055] The indication lamp body 1 comprises a shell 11, a buckle plate 12, a light-transmitting plate 13 and a lighting lamp plate 14. The shell 11 is installed on the wall surface of the building by bolts, and its height is installed according to the fire management specification. The buckle plate 12 is detachably installed on the front side of the shell 11, that is, the buckle plate 12 is provided with a plurality of connecting plates 121, and the surface of the shell 11 is provided with connecting grooves 111 matched with the connecting plates 121, and the connecting plates 121 are detachably fixed in the connecting grooves 111 by bolts. The connection between the shell 11 and the buckle plate 12 is firm and convenient to disassemble. A plurality of indicating grooves 122 are provided through the surface of the buckle plate 12, and the indicating grooves 122 are in the shape of arrows, dwarfs and the like, so as to show the meaning and make people understand that the indicated direction is the direction of the safety passage. The light-transmitting plate 13 is arranged in the indicating grooves 122, so that the light can pass through the light-transmitting plate 13, making the indicating grooves 122 bright and attracting people's attention. The lighting lamp plate 14 is arranged on the rear side of the inner cavity of the shell 11 to provide light, and the light passes through the light-transmitting plate 13 to illuminate the indicating grooves 122. The lighting lamp plate 14 is powered by an external power supply and is always on. The lighting lamp plate 14 is provided with a built-in battery, which provides power for the lighting lamp plate 14 in the case of power failure.

[0056] It also comprises a reminding assembly 2 arranged inside the indication lamp body 1, so that the indication light changes. ​

[0057] The reminding component 2 comprises a motor 21, a driving gear 22, a chain 23, a light-shielding strip 24, a support rod 25 and a support gear 26. The support rods 25 and the motor 21 are rotatably connected to the rear side of the inner cavity of the shell 11. The motor 21 is a vertical gear reduction motor 21 manufactured by Shanghai Haishang Motor Co., Ltd. and has a power of 1.5 kw. The support rods 25 are arranged in a rectangular distribution and four in number. The support gears 26 are arranged on the support rods 25. The chain 23 is arranged on the outer side of the support gears 26. The light-shielding strips 24 are arranged on the chain 23. The driving gear 22 is arranged on the output shaft of the motor 21 and is in meshing transmission with the chain 23. The motor 21 drives the chain 23 to move, thereby driving the light-shielding strips 24 to move. The light-shielding strips 24 can shield the light of the illuminating lamp plate 14, so that the indicating groove 122 in front appears a light ray darker area consistent with the shape of the light-shielding strips 24, and the position of the darker area changes constantly. The indicating groove 122 with the light and dark change can better attract people's attention and avoid the crowd from not noticing the indicating direction due to panic.

[0058] The fire-fighting equipment throwing component 3 is arranged outside the indicating lamp body 1 and is used for throwing the fire-fighting equipment.

[0059] The fire-fighting equipment throwing component 3 comprises a throwing box 31, a buckle cover 32 and a placing box 33. The throwing boxes 31 are arranged on the two sides of the indicating lamp body 1. The buckle cover 32 is buckled on the top end of the throwing box 31. The placing box 33 is slidably connected to the inner cavity of the throwing box 31. The fire-fighting equipment is placed in the placing box 33. The front side wall of the throwing box 31 is made of transparent material, so that people can directly see the fire-fighting equipment stored in the throwing box 31. People can directly open the buckle cover 32 to take out the fire-fighting equipment for use.

[0060] The fire-fighting equipment throwing component 3 further comprises a spring 34 and an electromagnet 35. The spring 34 is arranged between the bottom surface of the placing box 33 and the inner cavity bottom surface of the throwing box 31. The electromagnets 35 are arranged on the bottom surface of the placing box 33 and the inner cavity bottom surface of the throwing box 31. When the two electromagnets 35 are electrified, they attract each other, drive the placing box 33 to be pressed downward and compress the spring 34. When the danger occurs, the electromagnets 35 are de-energized. Under the elastic force of the spring 34, the placing box 33 is lifted up, thereby the buckle cover 32 on the top end of the throwing box 31 is opened by the fire-fighting equipment in the placing box 33, so that people can more conveniently take the fire-fighting equipment.

[0061] The fire-fighting equipment throwing component 3 is arranged on the two sides of the indicating lamp body 1.

[0062] The smoke exhaust component 4 is arranged between the two fire-fighting equipment throwing components 3 and is used for blowing away the smoke.

[0063] The smoke exhaust assembly 4 is provided with two, respectively between the two delivery assemblies 3 upper and lower ends, dispel the smoke in front of the indicator light body 1.

[0064] The smoke exhaust assembly 4 includes mounting plate 41, support air pipe 42, rotating ring 43, disturbance fan blade 44, fan 45. Two said delivery assembly 3 inside the mounting plate 41, two said mounting plate 41 between the support air duct, the support air duct both ends rotating connection said rotating ring 43, between two said rotating ring 43 is provided with a plurality of disturbance fan blade 44, the delivery assembly 3 outside the fan 45, the fan 45 preferably edge follow intelligent technology Co., Ltd. brushless fan 45, model for 798. The output end of the fan 45 and the support air pipe 42 are communicated through the pipeline, and the side wall of the support air pipe 42 is provided with a plurality of air outlets. The support air duct is a quadrangular prism, and the air outlets are evenly distributed on the front, back, upper and lower four sides of the support air pipe. When a fire occurs, the fan 45 starts to guide the wind into the support air duct, and blows out through the air outlet. The blown wind passes through the disturbance fan blade 44 and is blown to all directions. The disturbance fan blade 44 rotates under the action of the wind, thereby further disturbing the blown wind and blowing away the nearby smoke.

[0065] At the same time, the support air pipe 42 can also increase the rigidity, strength and the like of the two side delivery assemblies 3. In the process of crowd evacuation, due to the large volume of the delivery assembly 3, people may unintentionally touch the delivery assembly 3, which may cause the delivery assembly 3 to press and collide with the indicator light body 1, resulting in damage to the indicator light body 1 and failure to indicate the direction of the safe passage. The support air duct can provide support for the two delivery assemblies 3, and when the delivery assemblies 3 are collided, the force is transmitted to the other delivery assembly 3, thereby reducing the deformation of the indicator light body 1 and avoiding damage to the indicator light body 1. The safety plate increases the contact area between the support air duct and the delivery assembly 3, reduces the deformation degree of the delivery assembly 3 caused by collision and extrusion, and avoids the internal fire fighting appliance from being unable to be taken out.

[0066] It also includes a projection assembly 5 arranged at the top of the indicator light body 1. The enlarged indication direction is projected onto the wall surface, which is more eye-catching to indicate the direction to the evacuating crowd and avoids the problem that people do not notice the indicator light body 1 installed at a low position. The evacuation time is reduced due to the inability to see the evacuation direction, and the safety hazards such as congestion and trampling caused by unknown direction are also avoided.

[0067] The projection assembly 5 comprises a top plate 51, a projection plate 52, a connecting shaft 53 and a reflector 54. The top plate 51 is arranged on the top of the shell 11, the projection window 511 is arranged on the top plate 51, the projection plate 52 is arranged on the projection window 511, the connecting shaft 53 is arranged at the two ends of the reflector 54, and the other end of the connecting shaft 53 is rotatably connected to the top side wall of the inner cavity of the shell. The light emitted by the lighting lamp plate 14 is reflected to the projection window 511 by the reflector 54, and the content on the projection plate 52, i.e. the direction of the safety channel, is projected on the wall of the building, which is more eye-catching.

[0068] The extension mirror 55 is arranged below the reflector 54, the angle between the extension mirror 55 and the reflector 54 is an obtuse angle, the lower end of the extension mirror 55 is directed away from the lighting lamp plate 14, the matching mirror 56 is arranged on the top of the inner cavity of the shell, and the matching mirror 56 is in the same height as the reflector 54. The light emitted by the lighting lamp plate 14 can be better collected and reflected by the extension mirror 55 and the matching mirror 56, so that the projection is clearer.

[0069] The adjustment assembly 6 is further arranged above the projection assembly 5, so as to adjust the angle of the projection assembly 5 and the brightness of the light.

[0070] The adjustment assembly 6 comprises an adjustment telescopic rod 61, an adjustment shaft 62 and a handle 63. The adjustment shaft 62 is arranged on one side of the top of the reflector 54, the adjustment shaft 62 is fixedly connected to the movable end of the adjustment telescopic rod 61, the top plate 51 is provided with an adjustment slot, the adjustment telescopic rod 61 is rotatably connected to the side wall of the adjustment slot, and the handle 63 is arranged at the top end of the adjustment telescopic rod 61. By pulling the handle 63, the inclination angle of the reflector 54 can be adjusted, so that the angle of the reflected light is adjusted, more reflected light is directed to the projection plate 52, and the projection is brighter.

[0071] When the present application is used:

[0072] 1. According to the management specification such as fire fighting, the present device is installed at a suitable height.

[0073] 2. The lighting lamp plate 14 is always on, the indicating groove 122 is always in the bright state, the reminding assembly 2 starts to work, and the indicating groove 122 produces bright-dark changes, so as to better attract people's attention.

[0074] 3. By adjusting the component 6, the position projected by the projection component 5 is adjusted, the handle 63 is pulled, the angle of the reflecting lens 54 is adjusted, the angle of the reflected light is adjusted, more reflected light is directed towards the projection plate 52, on the one hand, the projection is brighter, on the other hand, the position of the projection on the wall is adjusted.

[0075] 4. When an emergency occurs, the alarm system in the building is started, the electromagnet 35 in the throwing component 3 is powered off, the placing box 33 is lifted by the elastic force of the spring 34, so that the fire fighting appliance in the inside lifts the buckle 32 at the top of the throwing box 31, so that people can take it more conveniently.

[0076] At the same time, the smoke exhaust component 4 is started, the fan 45 starts to work, the wind is introduced into the supporting air duct, and the wind is blown out through the air outlet, the blown wind is scattered in all directions through the disturbance fan blade 44, the disturbance fan blade 44 rotates under the action of the wind, so as to further disturb the blown wind and blow away the nearby smoke.

[0077] It should be noted that, in the present document, relational terms such as "first" and "second", and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0078] Other embodiments of the application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the application being indicated by the following claims. It is understood that the application is not limited to the precise structures and methods described herein and various modifications can be made therein without departing from the scope of the application. The scope of the application is limited only by the claims that follow.

Claims

1. A fire emergency evacuation indicating device, characterized in that: Include the indicator lamp body; The projection assembly is arranged at the top of the indicator lamp body, enlarges and projects the dispersing indication direction to the wall surface; The projection assembly includes a top plate, a projection plate, a connecting shaft, a mirror, the top of the shell is provided with the top plate, the top plate is provided with a projection window, the projection window is provided with the projection plate, the two ends of the mirror are provided with the connecting shaft, the other end of the connecting shaft is rotatably connected with the top side wall of the shell cavity, the lower part of the mirror is provided with an extension mirror, the angle between the extension mirror and the mirror is obtuse, the lower end of the extension mirror is away from the illumination lamp plate, the top of the shell cavity is provided with a matching mirror, and the matching mirror is in the same height with the mirror. It also includes a reminding assembly arranged inside the indicator lamp body to change the indicator light; the reminding assembly includes a motor, a driving gear, a chain, a shading strip, a support rod and a support gear, a plurality of support rods and the motor are rotatably connected on the rear side of the shell cavity, the support rod is provided with the support gear, a plurality of the support gears are provided with the chain on the outer side, a plurality of the shading strips are provided on the chain, the driving gear is arranged on the output shaft of the motor, and the driving gear is in meshing transmission with the chain. It also includes a smoke exhaust assembly arranged between the two projection assemblies to blow away the smoke; The smoke exhaust assembly includes a mounting plate, a support air pipe, a rotating ring, a disturbance fan blade and a fan, the mounting plate is arranged on the inner side of the two projection assemblies, the support air duct is arranged between the two mounting plates, the rotating ring is rotatably connected at both ends of the support air duct, a plurality of disturbance fan blades are arranged between the two rotating rings, the fan is arranged on the outer side of the projection assembly, the output end of the fan is communicated with the support air pipe through a pipeline, a plurality of air outlets are formed in the side wall of the support air pipe, the support air duct is in the shape of a quadrangular prism, and the air outlets are uniformly distributed on the front, rear, upper and lower four side surfaces of the support air duct. It also includes an adjusting assembly arranged above the projection assembly to adjust the angle of the projection assembly; the adjusting assembly includes an adjusting telescopic rod, an adjusting shaft and a handle, the adjusting shaft is arranged on one side of the top of the mirror, the adjusting shaft is fixedly connected with the movable end of the adjusting telescopic rod, the top plate is provided with an adjusting groove, the middle part of the adjusting telescopic rod is rotatably connected with the side wall of the adjusting groove, and the top end of the adjusting telescopic rod is provided with the handle.

2. A fire safety emergency evacuation indicating device according to claim 1, characterised in that: The indicator lamp body includes a shell, a buckle plate, a light-transmitting plate and an illumination lamp plate, the buckle plate is detachably mounted on the front side of the shell, a plurality of indication grooves are formed through the surface of the buckle plate, the light-transmitting plate is arranged in the indication grooves, and the illumination lamp plate is arranged on the rear side of the shell cavity.

3. A fire safety emergency evacuation indicating device according to claim 2, characterised in that: A plurality of connecting plates are arranged at the edge of the buckle plate, a connecting groove matched with the connecting plate is formed in the surface of the shell, and the connecting plate is detachably fixed in the connecting groove through bolts.

4. A fire safety emergency evacuation indicating device according to claim 1, characterised in that: The projection assembly is arranged on the outer side of the indicator lamp body to project the fire-fighting equipment.

5. A fire safety emergency evacuation indicating device according to claim 4, characterised in that: The delivery assembly comprises a delivery box, a buckle cover, a placing box, and the delivery box is arranged on both sides of the indicator lamp body, the buckle cover is buckled on the top end of the delivery box, the placing box is slidably connected in the inner cavity of the delivery box, and the fire-fighting appliance is placed in the placing box.

6. A fire safety emergency evacuation indicating device according to claim 5, characterised in that: The delivery assembly further comprises a spring and an electromagnet, the spring is arranged between the placing box and the bottom surface of the inner cavity of the delivery box, and the electromagnet is arranged on the bottom surface of the placing box and the bottom surface of the inner cavity of the delivery box.

7. A fire emergency evacuation indicating device according to claim 1, characterised in that: The delivery assembly is provided with two, which are respectively arranged on both sides of the indicator lamp body.

Images