A lighting device for disaster prevention and mitigation emergency evacuation

Abstract

The present invention relates to the field of lighting devices, and specifically to a lighting device for disaster prevention and mitigation emergency evacuation. It includes an installation box and a lighting lamp arranged on the installation box, the lighting lamp includes a lamp housing, a wick, a front cover assembly and an air supply assembly, and the front cover assembly includes a lamp surface made of a soft and highly transparent material. In the normal use state of the present invention, the front surface of the lamp surface remains in a flat state, which can avoid excessive dust deposition on the lamp surface; when an emergency such as a fire occurs, the adjustment structure adjusts the front surface of the lamp surface to a wrinkled curved surface, and the air supply assembly supplies air into the lamp housing. The wind of the air supply assembly blows out from the wrinkle gap of the lamp surface, and converges at the center of the lamp surface and flows to the surroundings, thereby splitting and blowing off dust, changing the refraction of light, blowing away surrounding smoke, improving the lighting effect of the lighting lamp, and increasing the brightness of the surrounding environment, which is more conducive to lighting evacuation.

Description

Technical Field

[0001] The present invention relates to the field of lighting devices, and in particular to a lighting device for disaster prevention, mitigation and emergency evacuation. Background Art

[0002] Emergency lighting is an important safety facility in modern public and industrial buildings. It is closely related to personal safety and building safety. When a fire or other disaster occurs in a building and the power supply is interrupted, emergency lighting plays an important role in the evacuation of personnel, fire rescue work, the continuation of important production work, or necessary operations.

[0003] During a fire, a large amount of smoke will be generated, which will obstruct the vision, and the ash falling on the lampshade of the emergency lighting will reduce the lighting range, which is not conducive to escape. Therefore, some people have proposed to clean the emergency lighting to ensure stable lighting. For example, in the fire emergency lighting disclosed in the Chinese patent document with authorization announcement number CN210624369U, a cleaning brush is used to remove dust on the lampshade. However, this fixed direction brush dust removal method is only applicable to emergency lighting with a flat lampshade. In order to make the light radiate in all directions instead of gathering in one direction, some emergency lighting has a groove structure radiating from the center to the surrounding areas on its surface. The above cleaning method cannot effectively clean the lampshade with an uneven surface, and it is difficult to ensure stable lighting of the emergency lighting during a fire.

[0004] The Chinese patent document with the authorization announcement number CN 117515511 B discloses a building fire emergency lighting device, in which the lampshade of the lighting lamp is evenly distributed with long grooves arranged along the radial direction, a mounting box is connected under the lighting lamp, and an air supply pipe is arranged including air supply pipes distributed around the lighting lamp, and two groups of air outlet pipes are evenly distributed on the air supply pipe, one group of air outlet pipes is arranged along the radial direction of the lighting lamp, and the other group of air outlet pipes is arranged toward the front of the lighting lamp, which can prevent the ash from affecting the lighting brightness. However, the above method is complex and unreliable in structure, and dust will still accumulate in the groove of the lamp surface when the emergency lighting lamp is not used daily, and the above problem is not solved.

[0005] The information disclosed in the background technology section of the present invention is only intended to deepen the understanding of the general background technology of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to those skilled in the art. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention proposes a lighting device for disaster prevention and mitigation emergency evacuation to solve the problem that the existing lighting devices for evacuation are prone to dust accumulation and have poor lighting effects.

[0007] The present invention discloses a lighting device for emergency evacuation of disaster prevention and reduction, which adopts the following technical scheme: it comprises a mounting box and a lighting lamp, wherein a control circuit is arranged inside the mounting box, and the lighting lamp comprises:

[0008] The lamp housing is installed in the installation box, and the front end of the lamp housing is open;

[0009] The wick is arranged on the rear side wall inside the lamp housing with the light emitting surface facing forward, and the wick is electrically connected to the control circuit inside the installation box;

[0010] The front cover assembly includes a transparent circular plate and a lamp face, wherein the transparent circular plate is made of a hard and highly transparent material, and the outer edge of the transparent circular plate is fixedly connected to the lamp housing; the lamp face is made of a soft and highly transparent material, and the lamp face is located at the front end of the transparent circular plate, the center of the lamp face is fixedly connected to the center of the transparent circular plate, and the outer edge of the rear end is connected to the transparent circular plate, and a filling cavity is formed between the lamp face and the transparent circular plate, and the filling cavity is filled with a transparent liquid;

[0011] The front outer edge of the lamp face is arranged on the lamp housing through an adjustment structure; the adjustment structure is configured to make the front surface of the lamp face a plane under normal conditions, and to deform the front surface of the lamp face into a wrinkled curved surface with multiple grooves evenly distributed around the circumference under emergency conditions.

[0012] Optionally, an air cavity is formed between the outer edge of the lamp surface and the lamp housing, and the front surface of the lamp surface is extruded and matched with the front end of the lamp housing;

[0013] The lighting lamp also includes an air supply component, which is configured to start in an emergency state and supply air to the air cavity, and the air in the air cavity is blown out through the groove on the front surface of the lamp face.

[0014] Optionally, the adjustment structure includes an adjustment ring, which is arranged in the air cavity and can be slidably arranged in the lamp housing along the axis of the lamp housing;

[0015] A first pull rod and a second pull rod are fixedly arranged on the outer edge of the front surface of the lamp surface. The first pull rod and the second pull rod are alternately arranged and evenly distributed along the circumferential direction of the lamp surface. The end of the first pull rod away from the lamp surface is connected to the lamp housing, and the end of the second pull rod away from the lamp surface is connected to the adjustment ring. When the adjustment ring is in the front end limit position, the first pull rod and the second pull rod are coplanar, and the front surface of the lamp surface is a plane. An elastic part is arranged in the air cavity, and the elastic part makes the adjustment ring initially in the front end limit position.

[0016] Optionally, the adjustment structure further comprises a drive ring, which is located in the air cavity and is configured to enable the adjustment ring to move backward and lock the adjustment ring to a rear end limit position.

[0017] Optionally, the driving ring is a permanent magnet ring, which is coaxially fixed to the lamp housing, and the adjusting ring is made of ferromagnetic material. The magnetic attraction force of the permanent magnet ring on the adjusting ring is slightly smaller than the elastic force of the elastic member.

[0018] Optionally, the driving ring is an electromagnetic ring, which is magnetic when powered on, and the driving ring is coaxially fixed to the lamp housing, and the adjusting ring is made of ferromagnetic material.

[0019] Optionally, the air supply assembly includes an air duct and a fan, the fan is connected to the air duct, and the air duct is communicated with the air cavity.

[0020] Optionally, the air inlet of the fan is provided with a filtering structure.

[0021] Optionally, a smoke sensor is arranged on the lamp housing.

[0022] Optionally, the installation box is externally connected with a plug electrically connected to the control circuit.

[0023] The beneficial effects of the present invention are as follows: a soft lamp surface is arranged in a lighting device for emergency evacuation for disaster prevention and mitigation of the present invention, and the front surface of the lamp surface can be switched between a plane in a first state and a wrinkled curved surface in a second state through an adjustment structure; under normal use, the front surface of the lamp surface remains in a flat state, which can avoid excessive deposition of dust on the lamp surface. When an emergency situation such as a fire occurs, the adjustment structure adjusts the front surface of the lamp surface to a wrinkled curved surface, changes the refraction of light, and the range of light emission is larger, the illumination is more uniform, the lighting effect is improved, and the utilization rate of light is enhanced. At the same time, when the lamp surface changes from the first state to the second state, the surface is deformed. Along with the dynamic changes of the lamp surface, the dust deposited on the lamp surface can be effectively split and separated from the lamp surface to a certain extent, reducing the obstruction of the lamp surface by dust, and further improving the lighting effect.

[0024] Furthermore, by arranging an air supply component, in an emergency state, the air supply component supplies air into the lamp housing, and the wind from the air supply component is blown out from the gaps between the folds of the lamp surface, and after converging at the center of the lamp surface, it flows around, blowing off the dust on the lamp surface and dispersing the surrounding smoke, further improving the lighting effect of the lamp, increasing the brightness of the surrounding environment, and being more conducive to lighting evacuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 It is a schematic diagram of the overall structure of a lighting device for disaster prevention and mitigation emergency evacuation according to the present invention;

[0027] Figure 2 is a schematic diagram of the structure of the lighting lamp of the present invention (first state);

[0028] Figure 3 is a schematic diagram of the structure of the lighting lamp of the present invention (second state);

[0029] Figure 4 for Figure 3 A front view of

[0030] Figure 5 for Figure 4 Middle AA section view;

[0031] Figure 6 for Figure 5 Enlarged view of point C in the middle (first state);

[0032] Figure 7 for Figure 5 Enlarged view of point C in the middle (second state);

[0033] Figure 8 for Figure 4 Middle BB section view;

[0034] Fig. 9 for Figure 8 Enlarged view at D in the middle (first state);

[0035] Fig.10 for Figure 8 Enlarged view at D in the middle (second state);

[0036] Fig.11 It is a schematic diagram of the structure of the lamp surface and the components thereon in the present invention (first state);

[0037] Fig.12 It is a schematic diagram of the structure of the lamp surface and the components thereon in the present invention (second state);

[0038] Fig.13 It is a schematic structural diagram of the adjusting ring and its components in the present invention.

[0039] In the figure:

[0040] 100. Installation box;

[0041] 200, plug;

[0042] 300. Lighting lamp;

[0043] 310, lamp housing; 311, air cavity; 312, transparent circular plate; 313, sealing pressure ring; 314, air inlet; 315, driving ring;

[0044] 320, lamp surface; 321, first pull bar; 322, filling cavity;

[0045] 330, air supply assembly; 331, air duct; 332, fan;

[0046] 340, wick;

[0047] 350, adjusting ring; 351, second pull bar; 352, elastic member; 353, limiting protrusion. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0049] like Figures 1 to 13 As shown, a lighting device for disaster prevention and mitigation emergency evacuation (hereinafter referred to as the lighting device) provided by an embodiment of the present invention includes an installation box 100 and a lighting lamp 300. A control circuit is arranged inside the installation box 100; the lighting lamp 300 includes a lamp housing 310, a wick 340 and a front cover assembly.

[0050] The lamp housing 310 is installed on the installation box 100, and the front end of the lamp housing 310 is open; the wick 340 is arranged on the rear side wall inside the lamp housing 310 with the light-emitting surface facing forward, and the wick 340 is electrically connected to the control circuit inside the installation box 100; the front cover assembly includes a transparent circular plate 312 and a lamp face 320, the transparent circular plate 312 is made of a hard and highly transparent material, preferably a glass material, and the outer edge of the transparent circular plate 312 is fixedly connected to the lamp housing 310; the lamp face 320 is made of a soft and highly transparent material, preferably PVC transparent soft glass, the lamp face 320 is located at the front end of the transparent circular plate 312, the center of the lamp face 320 is fixedly connected to the center of the transparent circular plate 312, and the outer edge of the rear end is connected to the transparent circular plate 312, and a filling cavity 322 is formed between the lamp face 320 and the transparent circular plate 312, and the filling cavity 322 is filled with a transparent liquid; specifically, referring to Fig.11 and Fig.12 The lamp surface 320 includes a front side wall and a rear peripheral wall, and the rear peripheral wall is connected to the rear end outer edge of the front side wall, so that the lamp surface 320 forms a cylindrical shape with an open rear end, referring to Figure 6 and Figure 8, the center of the front side wall of the lamp face 320 is connected to the center of the transparent circular plate 312, and the rear peripheral wall of the lamp face 320 is connected to the outer edge of the transparent circular plate 312. It can be understood that the shape of the transparent circular plate 312 is not unique, and it can also be set to be arched forward in the middle part, arched backward in the middle part, or the rear end surface is flat, so that the front cover assembly forms a concave lens, a convex lens or a flat lens to meet different usage requirements. In the preferred embodiment given by the present invention, the middle part of the transparent circular plate 312 is arched forward and connected to the center of the lamp face 320, which can be specifically in the form of bonding, so that the front cover assembly as a whole forms a structure similar to a concave lens, thereby making the range of illumination larger.

[0051] The front outer edge of the lamp surface 320 is arranged on the lamp housing 310 through an adjustment structure; the adjustment structure is configured to make the front surface of the lamp surface 320 a plane under normal conditions, and to deform the front surface of the lamp surface 320 into a wrinkled curved surface with multiple grooves evenly distributed around the circumference under emergency conditions.

[0052] The installation box 100 is externally connected to a plug 200 electrically connected to the control circuit. When the plug 200 is inserted into a reserved socket, the illuminating lamp 300 can be normally powered when the municipal power supply is working normally, and the backup power supply inside the present invention can be supplemented with electric energy. When the municipal power is cut off in an emergency, the backup power supply can be used to power the illuminating lamp 300 to provide a guarantee for emergency evacuation. After the illuminating lamp 300 is powered on, refer to Figure 5 and Figure 8 , the light emitted by the wick 340 is emitted outward through the front cover assembly. In normal use, the front surface of the lamp surface 320 remains in a flat state (this state is named the first state), which can prevent excessive dust deposition on the lamp surface 320; when an emergency such as a fire occurs, the adjustment structure adjusts the front surface of the lamp surface 320 to a wrinkled curved surface (this state is named the second state), changes the refraction of light, and the range of light emission is larger, the illumination is more uniform, the lighting effect is improved, and the light utilization rate is enhanced. At the same time, when the lamp surface 320 changes from the first state to the second state, the surface is deformed. With the dynamic change of the lamp surface 320, the dust deposited on the lamp surface 320 can be effectively split and separated from the lamp surface 320 to a certain extent, reducing the dust from blocking the lamp surface 320 and further improving the lighting effect.

[0053] In a further embodiment, an air cavity 311 is formed between the outer edge of the lamp surface 320 and the lamp housing 310, and the front surface of the lamp surface 320 is pressed and matched with the front end of the lamp housing 310. The illuminating lamp 300 further includes an air supply component 330, which is configured to start in an emergency state and supply air to the air cavity 311, and the air in the air cavity 311 is blown out through the groove on the front surface of the lamp surface 320. Through the above arrangement, under normal conditions, the reference Figure 1 and Fig.11The front surface of the lamp surface 320 is a plane. Because the lamp surface 320 and the lamp housing 310 are squeezed and sealed, the air cavity 311 is closed to prevent external air and dust from entering the air cavity 311. When an emergency such as a fire occurs, the air supply component 330 is started, and the air supply component 330 supplies air into the air cavity 311. At the same time, the front surface of the lamp surface 320 is deformed from a plane to a wrinkled curved surface with multiple grooves. Figure 3 and Fig.12 A gap is formed between the front surface of the lamp surface 320 and the lamp shell 310 at the groove on the front surface of the lamp surface 320. The wind inside the air cavity 311 is discharged from these gaps and converges at the center of the lamp surface 320 and then flows around, blowing off the dust on the lamp surface 320 and dispersing the surrounding smoke, further improving the lighting effect of the lighting lamp 300, increasing the brightness of the surrounding environment, and being more conducive to lighting evacuation.

[0054] Furthermore, in order to facilitate the sealing between the front surface of the lamp face 320 and the lamp housing 310, a sealing ring 313 is formed at the front end of the lamp housing 310, and the rear end of the sealing ring 313 is pressed and matched with the front surface of the lamp face 320. Specifically, the front end of the lamp housing 310 is folded toward the center of the circle to form an inner folded edge, and then folded backward to form a rear folded edge, which is the sealing ring 313.

[0055] In a further embodiment, the adjustment structure includes an adjustment ring 350, which is arranged in the air cavity 311, and the adjustment ring 350 can be slidably arranged on the lamp housing 310 along the axis of the lamp housing 310; specifically, a limiting protrusion 353 is arranged on the adjustment ring 350, and the lamp housing 310 is provided with a limiting ring groove, and the limiting protrusion 353 is slidably arranged in the limiting groove, so as to realize the axial sliding of the adjustment ring 350 along the lamp housing 310.

[0056] The first pull rod 321 and the second pull rod 351 are fixedly arranged on the outer edge of the front surface of the lamp surface 320. The first pull rod 321 and the second pull rod 351 are alternately arranged and evenly distributed along the circumferential direction of the lamp surface 320. The end of the first pull rod 321 away from the lamp surface 320 is connected to the lamp housing 310, and the end of the second pull rod 351 away from the lamp surface 320 is connected to the adjustment ring 350. When the adjustment ring 350 is in the front end limit position, the first pull rod 321 and the second pull rod 351 are coplanar. At this time, the front surface of the lamp surface 320 is a plane; an elastic member 352 is arranged in the air cavity 311, and the elastic member 352 makes the adjustment ring 350 initially in the front end limit position. The preferred elastic member 352 is a compression spring.

[0057] When used in a normal state, the second pull bar 351 is at the front end limit position. Figure 6 , Fig. 9As shown, the first tie bar 321 and the second tie bar 351 are coplanar. At this time, the front surface of the lamp face 320 is a plane, and dust is not easy to accumulate on the front surface of the lamp face 320 during use. At the same time, due to the effect of the sealing pressure ring 313, the surface of the lamp face 320 is always pressed against the lamp housing 310. When the front surface of the lamp face 320 is a plane, the lamp face 320 and the lamp housing 310 are sealed. When an emergency such as a fire occurs, the air supply component 330 is started, and the air supply component 330 supplies air to the air cavity 311. The pressure in the air cavity 311 increases. Under the action of the wind pressure, the adjustment ring 350 moves backward, and the second tie bar 351 moves backward. The first tie bar 321 and the second tie bar 351 are as shown in FIG. Figure 7 , Fig.10 As shown in the axial misalignment, the front surface of the lamp face 320 forms a groove diverging from the center to the surroundings under the action of the first tie bar 321 and the second tie bar 351, and the sealing pressure ring 313 and the lamp face 320 form a gap at the groove. The wind inside the air cavity 311 is discharged from these gaps and converges at the center of the lamp face 320 and then flows forward, blowing off the dust on the lamp face 320 and dispersing the surrounding smoke. It can be understood that the connection position between the first tie bar 321 and the lamp housing 310 is located in front of the rear end surface of the sealing pressure ring 313, so that the sealing pressure ring 313 can be reliably squeezed with the front surface of the lamp face 320.

[0058] In a further embodiment, the adjustment structure further includes a drive ring 315, which is located in the air cavity 311. The drive ring 315 is configured to enable the adjustment ring 350 to move backward and lock the adjustment ring 350 to the rear end limit position. By setting the drive ring 315, the second pull rod 351 can be kept in the rear end limit position in an emergency state, avoiding the second pull rod 351 from shaking in the air cavity 311 due to wind pressure fluctuations, and ensuring reliable switching of the lamp surface 320 between the first state and the second state.

[0059] In one embodiment, the driving ring 315 is a permanent magnet ring, which is coaxially fixed to the lamp housing 310. The adjusting ring 350 is made of ferromagnetic material. The magnetic attraction of the permanent magnet ring on the adjusting ring 350 is slightly smaller than the elastic force of the elastic member 352. Figure 2 In the state 1 shown in FIG. 1 , the air supply assembly 330 is closed, the adjustment ring 350 overcomes the attraction of the drive ring 315 under the action of the elastic member 352 and is in the front limit position, and the second pull bar 351 and the first pull bar 321 are as shown in FIG. Figure 6 , Fig. 9As shown, the front end of the lamp face 320 is closely attached to the sealing ring 313, the air cavity 311 is sealed, and the front surface of the lamp face 320 is a plane. When an emergency such as a fire occurs, the device changes from state 1 to state 2. The specific process is as follows: the air supply component 330 is started, and the air supply component 330 supplies air to the air cavity 311. Under the action of the wind pressure inside the air cavity 311, the magnetic attraction of the driving ring 315 on the adjusting ring 350 overcomes the driving adjustment ring 350 of the elastic member 352 and moves backward, and finally absorbs the adjusting ring 350. At this time, the second pull bar 351 and the first pull bar 321 are as shown in FIG. Figure 7 , Fig.10 As shown, gaps are formed between the second pull strip 351 and the sealing pressure ring 313, and the wind inside the air cavity 311 is discharged from these gaps, and the lamp surface 320 becomes a surface with multiple grooves radiating from the center to the surroundings, thereby improving the lighting effect and enhancing the light utilization rate.

[0060] In another embodiment, the driving ring 315 is an electromagnetic ring, which has magnetism when powered on. The driving ring 315 is coaxially fixed to the lamp housing 310, and the adjustment ring 350 is made of ferromagnetic material. Figure 2 In the state 1 shown in the figure, the air supply assembly 330 is closed, the electromagnetic ring is powered off, the adjustment ring 350 is in the front limit position under the action of the elastic member 352, and the second pull bar 351 and the first pull bar 321 are as shown in the figure. Figure 6 , Fig. 9 As shown, the front end of the lamp face 320 is closely attached to the sealing pressure ring 313, the air cavity 311 is sealed, and the front surface of the lamp face 320 is a plane. When an emergency such as a fire occurs, the device changes from state 1 to state 2. The specific process is as follows: the air supply component 330 is started, and the air supply component 330 supplies air into the air cavity 311. At the same time, the electromagnetic ring is energized to generate a magnetic attraction force on the adjustment ring 350, thereby driving the adjustment ring 350 to move backward, and finally adsorbing the adjustment ring 350. At this time, the second pull bar 351 and the first pull bar 321 are as shown in FIG. Figure 7 , Fig.10 As shown, gaps are formed between the second pull strip 351 and the sealing pressure ring 313, and the wind inside the air cavity 311 is discharged from these gaps, and the lamp surface 320 becomes a surface with multiple grooves radiating from the center to the surroundings, thereby improving the lighting effect and enhancing the light utilization rate.

[0061] It should be further added that, in an embodiment in which the air supply assembly 330 is not provided, the adjustment structure includes an adjustment ring 350 and a drive ring 315. The drive ring 315 is provided as an electromagnetic ring, and the switching of the device between the first state and the second state is achieved by turning the power on and off of the electromagnetic ring. Specifically, the adjustment structure includes an adjustment ring 350 and a drive ring 315. The adjustment ring 350 can be slidably arranged between the lamp housing 310 and the lamp face 320 along the axis of the lamp housing 310. The drive ring 315 is fixedly arranged on the lamp housing 310. The drive ring 315 is an electromagnetic ring, which is magnetic when powered on. The adjustment ring 350 is made of ferromagnetic material. The outer edge of the front surface of the lamp face 320 is fixedly provided with a first pull rod 321 and a second pull rod 351. The first pull rod 321 and the second pull rod 351 are alternately arranged and evenly distributed along the circumferential direction of the lamp face 320. The end of the first pull rod 321 away from the lamp face 320 is connected to the lamp housing 310, and the end of the second pull rod 351 away from the lamp face 320 is connected to the adjustment ring 350. An elastic member 352 is arranged in the lamp housing 310, and the elastic member 352 makes the adjustment ring 350 initially in the front end limit position.

[0062] In a further embodiment, the air supply assembly 330 includes an air duct 331 and a fan 332, the fan 332 is connected to the air duct 331, the air duct 331 is connected to the air cavity 311, and the fan 332 can be started to supply air to the air cavity 311. Specifically, the lamp housing 310 is provided with an air inlet 314 connected to the air cavity 311, and the air duct 331 is connected to the air inlet 314, so that air can be supplied to the air cavity 311.

[0063] Furthermore, the air inlet of the fan 332 is provided with a filtering structure (not shown in the figure), preferably a filter screen. By adding the filtering structure, smoke and dust in the environment can be filtered out to ensure that the wind blown out from the lamp surface 320 is relatively clean, which is more conducive to the evacuation of personnel.

[0064] In a further embodiment, a smoke sensor (not shown in the figure) is provided on the lamp housing 310, and the smoke sensor is configured to detect the smoke concentration in the evacuation passage, so as to control the switching of the device between the first state and the second state. The specific device controls the opening and closing of the air supply component 330 and / or the driving ring 315 (the driving ring 315 is an embodiment of an electromagnetic ring) according to the detection data of the smoke sensor, so as to realize the switching of the device between the first state and the second state.

[0065] Furthermore, the lighting device of the present invention is configured to switch from the first state to the second state after a municipal power outage, that is, the power supply state and the smoke sensor control the switching of the device state in parallel, ensuring that the device can provide reliable protection for emergencies.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lighting device for disaster prevention and mitigation emergency evacuation, characterized in that: It includes an installation box and a lighting lamp. The installation box is provided with a control circuit inside. The lighting lamp includes: The lamp housing is installed in the installation box, and the front end of the lamp housing is open; The wick is arranged on the rear side wall inside the lamp housing with the light emitting surface facing forward, and the wick is electrically connected to the control circuit inside the installation box; The front cover assembly includes a transparent circular plate and a lamp face, wherein the transparent circular plate is made of a hard and highly transparent material, and the outer edge of the transparent circular plate is fixedly connected to the lamp housing; the lamp face is made of a soft and highly transparent material, and the lamp face is located at the front end of the transparent circular plate, the center of the lamp face is fixedly connected to the center of the transparent circular plate, and the outer edge of the rear end is connected to the transparent circular plate, and a filling cavity is formed between the lamp face and the transparent circular plate, and the filling cavity is filled with a transparent liquid; The front outer edge of the lamp face is arranged on the lamp housing through an adjustment structure; the adjustment structure is configured to make the front surface of the lamp face a plane under normal conditions, and to deform the front surface of the lamp face into a wrinkled curved surface with multiple grooves evenly distributed around the circumference under emergency conditions.

2. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 1, characterized in that: An air cavity is formed between the outer edge of the lamp surface and the lamp housing, and the front surface of the lamp surface is extruded and matched with the front end of the lamp housing; The lighting lamp also includes an air supply component, which is configured to start in an emergency state and supply air to the air cavity, and the air in the air cavity is blown out through the groove on the front surface of the lamp face.

3. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 2, characterized in that: The adjustment structure comprises an adjustment ring, which is arranged in the air cavity and can be slidably arranged in the lamp housing along the axis of the lamp housing; A first pull rod and a second pull rod are fixedly arranged on the outer edge of the front surface of the lamp surface. The first pull rod and the second pull rod are alternately arranged and evenly distributed along the circumferential direction of the lamp surface. The end of the first pull rod away from the lamp surface is connected to the lamp housing, and the end of the second pull rod away from the lamp surface is connected to the adjustment ring. When the adjustment ring is in the front end limit position, the first pull rod and the second pull rod are coplanar, and the front surface of the lamp surface is a plane. An elastic part is arranged in the air cavity, and the elastic part makes the adjustment ring initially in the front end limit position.

4. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 3, characterized in that: The adjusting structure also includes a driving ring, which is located in the air cavity and configured to enable the adjusting ring to move backward and lock the adjusting ring to a rear end limit position.

5. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 4, characterized in that: The driving ring is a permanent magnetic ring, which is coaxially fixed to the lamp housing. The adjusting ring is made of ferromagnetic material. The magnetic attraction of the permanent magnetic ring on the adjusting ring is slightly smaller than the elastic force of the elastic member.

6. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 4, characterized in that: The driving ring is an electromagnetic ring, which is magnetic after being energized. The driving ring is coaxially fixed to the lamp housing, and the adjusting ring is made of ferromagnetic material.

7. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 2, characterized in that: The air supply component comprises an air duct and a fan, the fan is connected to the air duct, and the air duct is communicated with the air cavity.

8. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 7, characterized in that: The air inlet of the fan is provided with a filtering structure.

9. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 1, characterized in that: A smoke sensor is arranged on the lamp housing.

10. The lighting device for disaster prevention and mitigation emergency evacuation according to claim 1, characterized in that: The installation box is externally connected with a plug electrically connected to the control circuit.

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