Fire-fighting emergency lighting and evacuation indication lighting device and control method

Abstract

The invention discloses a fire-fighting emergency lighting and evacuation indication lighting device and a control method, and relates to the technical field of lighting equipment, the fire-fighting emergency lighting and evacuation indication lighting device comprises a box body and a lamp body, the box body and the lamp body are connected through a swing arm mechanism, the lamp body is provided with a retracting position and a searchlighting position on the box body, and the lamp body comprises an electromagnet fixedly installed on the box body, an electromagnet is arranged in the box body, a driving block is electromagnetically attracted to the electromagnet, and the driving block can switch the lamp body from the retracting position to the searchlighting position in the releasing and falling state, and the box body and the lamp body are connected through a swing arm mechanism, so that the lamp body has the retracting position and the searchlighting position; and when the lamp body is located at the avoiding position, dust covering can be prevented, and the lamp body is protected.

Description

Technical Field

[0001] The present invention relates to the technical field of lighting equipment, and in particular to a fire emergency lighting and evacuation indication lighting device and a control method. Background Art

[0002] Fire emergency lighting and evacuation indication lighting devices refer to a type of lighting equipment that can effectively illuminate and indicate evacuation routes, or can continuously illuminate without interruption when the normal lighting power supply fails;

[0003] The existing Chinese patent publication number is "CN217718956U", and the name of the patent is "A fire emergency lighting and evacuation indication device", which includes "a housing, a controller is arranged in the housing, an emergency indicator light is arranged at the front end of the housing, the housing is provided with a cylinder, an alarm light and a safety passage sign light, the cylinder includes a first cylinder, a second cylinder and a third cylinder arranged in parallel, the alarm light includes a first alarm light, a second alarm light and a third alarm light, and the safety passage sign light includes a first safety passage sign light and a second safety passage sign light arranged in parallel";

[0004] The existing common fire emergency lighting and evacuation indication lighting devices mainly include a box body and a lighting lamp head installed on the box body. The actual lighting brightness generated by the lighting device also needs to comply with the corresponding brightness standards in the "General Code for Building Fire Protection" (GB55037-2022). However, in some dusty environments, dust is easily covered on the surface of the lamp body. Moreover, the fire emergency lighting and evacuation indication lighting devices are usually installed at a higher position and are not convenient for manual cleaning. Over time, the fire emergency lighting and evacuation indication lighting devices that have been covered with dust accumulation for a long time will have a lower lighting brightness than the brightness standard in the specification documents during actual use, affecting the actual lighting indication effect. In order to solve the above problems, we propose an emergency lighting and evacuation indication lighting device and a control method. Summary of the invention

[0005] The object of the present invention is to provide a fire emergency lighting and evacuation indication lighting device and a control method to solve the deficiencies in the above-mentioned prior art.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] A fire emergency lighting and evacuation indication lighting device comprises a box body and a lamp body, wherein the box body and the lamp body are connected via a swing arm mechanism, wherein the lamp body has a retracted position and a search position on the box body, and the swing arm mechanism comprises:

[0008] A rotating arm assembly, comprising a shaft rod rotatably mounted on the box body, wherein a connecting arm fixed to the lamp body is fixed on the shaft rod;

[0009] The locking assembly includes a blocking lever unit located on the movement trajectory of the connecting arm, the blocking lever unit has a first state for limiting the lamp body at the stowed position, and the blocking lever unit also has a second state for limiting the lamp body at the searchlight position;

[0010] The switching assembly includes an electromagnet fixedly mounted on a box body, a driving block is electromagnetically adsorbed on the electromagnet, the driving block is transmission-connected to the blocking rod unit through a first transmission unit, the driving block is transmission-connected to the shaft rod through a second transmission unit, and the driving block can switch the lamp body from a stowed position to a searchlight position when released and falling.

[0011] Preferably, the box body comprises a box shell, and a recessed cabin structure for accommodating the lamp body in the avoidance position is provided at the edge of the box shell.

[0012] Preferably, the blocking rod unit includes a rotating rod rotatably connected to the box body, one end of the rotating rod is elastically hinged to a limiting rod, one side of the limiting rod is provided with a blocking block fixed to the rotating rod, and the limiting rod can contact the connecting arm.

[0013] Preferably, a knob block is fixed on one end of the rotating rod extending outside the box body.

[0014] Preferably, the driving block comprises an iron column block capable of being fixed by magnetic attraction of an electromagnet, a side surface of the iron column block is provided with a toothed surface, and the iron column block has a lifting space in the vertical direction inside the box body.

[0015] Preferably, the first transmission unit is a gear fixedly sleeved on the rotating rod, and the tooth surface of the gear can mesh with the tooth groove surface.

[0016] Preferably, the second transmission unit comprises a gear ring meshing with the tooth groove surface, a plurality of evenly distributed fan-shaped cavities are provided on the inner wall surface of the ring body of the gear ring, each of the fan-shaped cavities is provided with a strip plate fixed to the shaft rod, and each of the strip plates is connected to the cavity wall of the fan-shaped cavity by a spring.

[0017] Preferably, the cabin space of the recessed cabin structure is a rectangular space, and a sliding channel for vertical movement of the driving block is formed between the wall of the recessed cabin structure facing the inside of the box shell and the inner wall of the box shell, and the sliding channel can limit the movement of the driving block on the horizontal plane.

[0018] Preferably, the tooth groove surface comprises a long groove formed on the side of the iron column block, and a plurality of slots evenly arranged in parallel are formed on the bottom of the long groove.

[0019] A method for controlling a fire emergency lighting and evacuation indication lighting device, based on the fire emergency lighting and evacuation indication lighting device, comprises the following steps:

[0020] When the electromagnet is powered off and demagnetized, the driving block is released and falls in the lifting space, the lamp body is switched from the retracted position to the search position, and the blocking rod unit is switched from the first state to the second state.

[0021] In the above technical scheme, the present invention provides a fire emergency lighting and evacuation indication lighting device, which connects the box body and the lamp body through a swing arm mechanism, so that the lamp body has a folded position and a searchlight position. When the lamp body is in the folded position, it can help prevent dust from covering and protect the lamp body. When in use, the lamp body is driven by the switching component and switched to the searchlight position through the action of the rotating arm component, thereby providing lighting for the environment, thereby maintaining a good lighting effect of the lamp body, which is beneficial to fire evacuation and has good practical significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0023] Figure 1 It is a partial cross-sectional schematic diagram of a fire emergency lighting and evacuation indication lighting device of the present invention;

[0024] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 A schematic cross-sectional view of a gear ring of a fire emergency lighting and evacuation indication lighting device according to the present invention;

[0026] Figure 4 It is a schematic diagram of the lamp body of a fire emergency lighting and evacuation indication lighting device of the present invention in the searchlight position of the box body;

[0027] Figure 5 A schematic diagram of a box body of a fire emergency lighting and evacuation indication lighting device of the present invention;

[0028] Figure 6 The present invention is a schematic diagram of a lamp body of a fire emergency lighting and evacuation indication lighting device in a box body retracted position.

[0029] Description of reference numerals:

[0030] 1. Box body; 1.1. Box shell; 1.2. Concave cabin structure; 1.21. First cabin board; 1.22. Second cabin board; 1.23. Third cabin board; 1.24. Direction indicator light board; 1.3. Sliding channel; 2. Lamp body; 3. Rotating arm assembly; 3.1. Axle rod; 3.2. Connecting arm; 4. Locking limit assembly; 4.1. Stop rod unit; 4.11. Rotating rod; 4.12. Limit rod; 4.13. Stop block; 4.2. Knob block; 5. Switching assembly; 5.1. Electromagnet; 5.2. Drive block; 5.21. Iron column block; 5.22. Toothed surface; 5.221. Long groove; 5.222. Slot; 5.3. First transmission unit; 5.4. Second transmission unit; 5.41. Gear ring; 5.42. Fan-shaped cavity; 5.43. Strip plate; 5.44. Spring. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] See also Figure 1-6 The embodiment of the present invention provides a fire emergency lighting and evacuation indication lighting device, comprising a box body 1 and a lamp body 2, wherein the box body 1 and the lamp body 2 are connected via a swing arm mechanism, and the lamp body 2 has a retracted position and a search position on the box body 1, and the swing arm mechanism comprises:

[0033] The rotating arm assembly 3 comprises a shaft rod 3.1 rotatably mounted on the box body 1, and a connecting arm 3.2 fixed to the lamp body 2 is fixed on the shaft rod 3.1;

[0034] The locking assembly 4 comprises a blocking lever unit 4.1 located on the motion trajectory of the connecting arm 3.2, the blocking lever unit 4.1 has a first state for limiting the lamp body 2 located at the stowed position, and a second state for limiting the lamp body 2 located at the searchlight position;

[0035] The switching assembly 5 comprises an electromagnet 5.1 fixedly mounted on the box body 1, a driving block 5.2 is electromagnetically attracted on the electromagnet 5.1, the driving block 5.2 is transmission-connected to the blocking rod unit 4.1 through a first transmission unit 5.3, and the driving block 5.2 is transmission-connected to the shaft rod 3.1 through a second transmission unit 5.4. The driving block 5.2 can switch the lamp body 2 from the retracted position to the searchlight position when released and dropped;

[0036] Specifically, the box body 1 is a rectangular box body, and its material is flame-retardant material. The lamp body 2 is connected to a power line electrically connected to the municipal power supply. A battery electrically connected to the lamp body 2 is arranged in the box body 1. When the power between the lamp body 2 and the municipal power supply is disconnected, the battery can supply power to light the lamp body 2. The electromagnet 5.1 is electrically connected to the municipal power supply. When the electromagnet 5.1 is electrically disconnected from the municipal power supply, the magnetism of the electromagnet 5.1 disappears.

[0037] Under normal circumstances, the lamp body 2 is in a retracted position, thereby preventing the lamp body 2 from being covered by dust and keeping the irradiated surface of the lamp body 2 transparent. At the same time, the electromagnet 5.1 is electrically connected to the municipal power supply, so that the driving block 5.2 is magnetically adsorbed by the electromagnet 5.1, thereby maintaining a suspended state. There is a falling space between the bottom end of the driving block 5.2 and the inner bottom wall of the box body 1. When the municipal power supply is cut off, the battery supplies power to light the lamp body 2, and the lamp body 2 is in an illuminated state. At the same time, the electromagnet 5.1 is electrically disconnected from the municipal power supply, and the electromagnet 5.1 The magnetism disappears, so that the driving block 5.2 falls vertically in the box body 1. During the falling process of the driving block 5.2, the driving block 5.2 switches the blocking rod unit 4.1 from the first state to the second state through the first transmission unit 5.3. At the same time, the driving block 5.2 drives the shaft 3.1 to have a positive axial deflection through the second transmission unit 5.4, so that the lamp body 2 is driven by the connecting arm 3.2 to switch from the avoidance position to the searchlight position, thereby providing lighting for the environment, thereby maintaining a good lighting effect of the lamp body, facilitating fire evacuation, and having good practical significance.

[0038] In another embodiment provided by the present invention, the box body 1 includes a box shell 1.1, and a recessed cabin structure 1.2 for accommodating the lamp body 2 in the avoidance position is provided at the edge of the box shell 1.1, wherein the cabin space of the recessed cabin structure 1.2 is a rectangular space, and the recessed cabin structure 1.2 forms a recessed step structure on the edge of the box shell 1.1, and a sliding channel 1.3 for vertical movement of the driving block 5.2 is formed between the wall surface of the recessed cabin structure 1.2 facing the inside of the box shell 1.1 and the inner wall surface of the box shell 1.1, and the sliding channel 1.3 can limit the movement of the driving block 5.2 on the horizontal plane;

[0039] Specifically, the recessed cabin structure 1.2 includes a first cabin plate 1.21 parallel to the back surface of the box shell 1.1 and a second cabin plate 1.22 parallel to the bottom surface of the box shell 1.1. The first cabin plate 1.21 and the second cabin plate 1.22 are perpendicular to each other to form a bent plate structure. A third cabin plate 1.23 is vertically fixed to both ends of the bent plate structure. The third cabin plate 1.23 is parallel to the side end of the box shell 1.1. A direction indicator light board 1.24 fixed to the first cabin plate 1.21 is provided in the recessed cabin structure 1.2. The light on and off state of the direction indicator light board 1.24 is synchronized with the light on and off state of the lamp body 2. A direction arrow mark is provided on the direction indicator light board 1.24. When the lamp body 2 is in the searchlight position, the direction indicator light board 1.24 lights up to indicate the direction. When the lamp body 2 is completely in the rectangular space of the recessed cabin structure 1.2, the lamp body 2 is in the retracted position.

[0040] In another embodiment provided by the present invention, the stopper unit 4.1 includes a rotating rod 4.11 rotatably connected to the box body 1, and one end of the rotating rod 4.11 is elastically hinged to a limit rod 4.12, wherein the elastic hinge is specifically that a torsion spring is installed between the limit rod 4.12 and the rotating rod 4.11, and the torsion spring can make the axis lines of the limit rod 4.12 and the rotating rod 4.11 be on the same straight line. A stopper 4.13 fixed to the rotating rod 4.11 is provided on one side of the limit rod 4.12, and the stopper 4.13 extends out from the end of the rotating rod 4.11, and the limit rod 4.12 can be fixed to the stopper 4.13 The contacting side is the back side of the limit rod 4.12, and the side of the limit rod 4.12 away from the stopper 4.13 is the front side. The stopper 4.13 can limit the deflection range of the limit rod 4.12, that is, the deflection range of the limit rod 4.12 is 90 degrees. The position where the limit rod 4.12 is on the same straight line as the axis of the rotating rod 4.11 is the concentric axis position, and the position where the axis of the limit rod 4.12 is perpendicular to the axis of the rotating rod 4.11 is the vertical axis position. The limit rod 4.12 can swing between the concentric axis position and the vertical axis position, and the limit rod 4.12 can contact the connecting arm 3.2.

[0041] In actual use, when the lamp body 2 is in the retracted position, the blocking rod unit 4.1 is in the first state, and the front of the limiting rod 4.12 contacts the arm of the connecting arm 3.2, and the stopper 4.13 blocks the limiting rod 4.12 from deflecting, so that the blocking rod unit 4.1 always maintains a straight state, thereby limiting the lamp body 2 in the retracted position, so that the lamp body 2 remains in the recessed cabin structure 1.2;

[0042] When the stopper unit 4.1 is in the second state, the back of the limit rod 4.12 contacts the arm of the connecting arm 3.2, and the stopper 4.13 cannot prevent the limit rod 4.12 from deflecting, so the lamp body 2 can deflect from the retracted position toward the search position.

[0043] In another embodiment provided by the present invention, the driving block 5.2 includes an iron column block 5.21 capable of being magnetically fixed by the electromagnet 5.1, the iron column block 5.21 is preferably a column block with a rectangular cross section, the top end surface of the column of the iron column block 5.21 is in adsorption contact with the electromagnet 5.1, and a tooth groove surface 5.22 is provided on the side of the iron column block 5.21, and the iron column block 5.21 has a lifting space in the vertical direction in the box body 1, wherein the tooth groove surface 5.22 includes a long groove 5.221 provided on the side of the iron column block 5.21, and a plurality of slots 5.222 evenly arranged in parallel are provided on the bottom of the long groove 5.221;

[0044] The first transmission unit 5.3 is a gear fixedly sleeved on the rotating rod 4.11, and the tooth surface of the gear can mesh with the tooth groove surface 5.22, that is, the wheel body edge of the gear 5.31 is adapted to be clamped in the long groove 5.221, and the gear teeth of the gear 5.31 mesh with the slot 5.222;

[0045] Further, the second transmission unit 5.4 comprises a toothed ring 5.41 meshing with the toothed surface 5.22, a plurality of evenly distributed fan-shaped cavities 5.42 are formed on the inner wall surface of the ring body of the toothed ring 5.41, each fan-shaped cavity 5.42 is provided with a strip plate 5.43 fixed to the shaft 3.1, each strip plate 5.43 can move in the fan-shaped cavity 5.42, and each strip plate 5.43 is connected to the cavity wall of the fan-shaped cavity 5.42 by a spring 5.44;

[0046] When the electromagnet 5.1 is powered off and the iron column block 5.21 falls, the tooth surface of the gear 5.31 meshes with the tooth groove surface 5.22, so that the rotating rod 4.11 undergoes synchronous positive axial deflection with the gear 5.31. When the deflection angle of the rotating rod 4.11 reaches a predetermined angle, for example, the predetermined angle is 180 degrees, the blocking rod unit 4.1 also switches from the first state to the second state, and the iron column block 5.21 also reaches the lowest end position of the fall.

[0047] At the same time, when the tooth surface of the tooth ring 5.41 meshes with the tooth groove surface 5.22, the tooth ring 5.41 can also accept the meshing drive when the iron column block 5.21 falls. It should be noted that before the iron column block 5.21 falls to the lowest position, that is, the blocking rod unit 4.1 has not reached the second state, so the arm of the connecting arm 3.2 is still blocked by the blocking rod unit 4.1 and cannot be deflected. Therefore, when the tooth ring 5.41 accepts the meshing drive when the iron column block 5.21 falls, the tooth ring 5.41 rotates axially around the shaft 3.1, and the cavity wall of the fan-shaped cavity 5.42 and the strip plate 5.43 elastically compress the spring 5.44;

[0048] When the iron column block 5.21 also reaches the lowest end position of the fall, the spring 5.44 also reaches the maximum compressed state, and the blocking rod unit 4.1 is also switched from the first state to the second state, and the arm of the connecting arm 3.2 is no longer blocked by the blocking rod unit 4.1. At this time, the elastic potential energy of the spring 5.44 is released, so that the strip plate 5.43 drives the shaft 3.1 to have a positive axial deflection, so that the lamp body 2 can be deflected from the retracted position to the search position;

[0049] In another embodiment provided by the present invention, the shaft 3.1 is fixedly passed through the side of the connecting arm 3.2, the end of the connecting arm 3.2 fixed to the lamp body 2 is the head end of the connecting arm 3.2, the end of the connecting arm 3.2 away from the lamp body 2 is the tail end of the connecting arm 3.2, the position of the shaft 3.1 on the connecting arm 3.2 is the demarcation position, the arm between the demarcation position and the head end of the connecting arm 3.2 is the front arm portion, the arm between the demarcation position and the tail end of the connecting arm 3.2 is the rear arm portion, and both the front arm portion and the rear arm portion of the connecting arm 3.2 can contact the stopper unit 4.1;

[0050] Specifically, for example, when the deflection angle of the rotating rod 4.11 reaches 180 degrees, the blocking rod unit 4.1 is also switched from the first state to the second state, and the iron column block 5.21 also reaches the lowest end position of the fall. Then, during the falling process of the iron column block 5.21, when the deflection angle of the rotating rod 4.11 reaches 100 degrees, the tooth groove surface 5.22 on the iron column block 5.21 is engaged with the tooth surface of the gear ring 5.41. As the iron column block 5.21 continues to fall, the spring 5.44 is elastically compressed between the cavity wall of the fan-shaped cavity 5.42 and the strip plate 5.43. Since the deflection angle of the rotating rod 4.11 is 180 degrees when the iron column block 5.21 reaches the lowest end position of the fall, under ideal conditions, the maximum deflection angle of the strip plate 5.43 in the fan-shaped cavity 5.42 is 80 degrees, and as the iron column block 5.21 continues to fall;

[0051] When the iron column block 5.21 also reaches the lowest end position of the fall, the lever unit 4.1 has been switched to the second state. At this time, the elastic potential energy of the spring 5.44 is released, providing a driving force for the lamp body 2 to deflect from the stowed position toward the searchlight position. Preferably, the deflection direction of the lamp body 2 from the stowed position toward the searchlight position is downward deflection, so the deflection of the lamp body 2 also has its own gravity potential energy release. Therefore, in actual use, after the connecting arm 3.2 deflects 180 degrees, the gravity potential energy and the inertia force generated by the elastic potential energy of the spring 5.44 on the connecting arm 3.2 cause the connecting arm 3.2 to continue to deflect excessively;

[0052] It should be particularly noted that, during the continued excessive deflection process, the rear part of the arm of the connecting arm 3.2 pushes and contacts with the back side of the limit rod 4.12, and the torsion spring plays a buffering role in the excessive deflection of the connecting arm 3.2 while undergoing elastic deformation. When the excessive deflection of the connecting arm 3.2 reaches the maximum position, for example, when the connecting arm 3.2 deflects to 210 degrees, the rear part of the arm of the connecting arm 3.2 crosses the axis of the rotating rod 4.11, and the connecting arm 3.2 is in an inclined state as a whole. Under the action of gravity, the connecting arm 3.2 has a tendency to deflect in the opposite direction, and at this time, the rear part of the arm of the connecting arm 3.2 contacts with the front side of the limit rod 4.12, thereby keeping the connecting arm 3.2 in an inclined state. At this time, the irradiated light of the lamp body 2 is in an inclined downward direction, which can have a good lighting effect on the ground area below.

[0053] In another embodiment of the present invention, a knob block 4.2 is fixed to one end of the rotating rod 4.11 extending outside the box body 1. When the emergency situation is relieved, the rotating rod 4.11 is rotated counterclockwise by the knob block 4.2, so that the rotating rod 4.11 undergoes reverse axial deflection, so that the driving block 5.2 is also restored to the position where it is magnetically attracted to the electromagnet 5.1. At the same time, the lamp body 2 is also restored to the retracted position, and the blocking rod unit 4.1 is also restored to the first state.

[0054] A method for controlling a fire emergency lighting and evacuation indication lighting device, based on the fire emergency lighting and evacuation indication lighting device, comprises the following steps:

[0055] When the electromagnet 5.1 is powered off and demagnetized, the driving block 5.2 is released and falls in the lifting space, and the lamp body 2 switches from the retracted position to the searchlight position. At the same time, the lever unit 4.1 switches from the first state to the second state. That is to say, a recessed cabin structure 1.2 is provided on the side of the box body 1. When the lamp body 2 is in the recessed cabin structure 1.2 in the normal state, the lamp body 2 is in the retracted position on the box body 1. At the same time, the lever unit 4.1 in the first state limits the lamp body 2 in the retracted position. When the lamp body 2 is in the searchlight position, the lever unit 4.1 in the second state limits the lamp body 2 in the searchlight position. The two states of the lever unit 4.1 can correspond to the two states of the lamp body 2.

[0056] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A fire emergency lighting and evacuation indication lighting device, comprising a box body (1) and a lamp body (2), characterized in that: The box body (1) and the lamp body (2) are connected via a swing arm mechanism, the lamp body (2) has a stowed position and a search position on the box body (1), and the swing arm mechanism comprises: A rotating arm assembly (3), comprising a shaft (3.1) rotatably mounted on a box body (1), wherein a connecting arm (3.2) fixed to a lamp body (2) is fixed on the shaft (3.1); A locking assembly (4), comprising a blocking lever unit (4.1) located on a motion trajectory of the connecting arm (3.2), the blocking lever unit (4.1) having a first state for limiting the position of the lamp body (2) located in the stowed position, and the blocking lever unit (4.1) also having a second state for limiting the position of the lamp body (2) located in the searchlight position; A switching assembly (5) comprises an electromagnet (5.1) fixedly mounted on a box body (1); a driving block (5.2) is electromagnetically attracted to the electromagnet (5.1); the driving block (5.2) is transmission-connected to a blocking rod unit (4.1) via a first transmission unit (5.3); the driving block (5.2) is transmission-connected to a shaft rod (3.1) via a second transmission unit (5.4); and the driving block (5.2) can switch the lamp body (2) from a stowed position to a searchlight position when in a released falling state.

2. A fire emergency lighting and evacuation indication lighting device according to claim 1, characterized in that: The box body (1) comprises a box shell (1.1), and a recessed compartment structure (1.2) for accommodating the lamp body (2) in an avoidance position is provided at an edge of the box shell (1.1).

3. A fire emergency lighting and evacuation indication lighting device according to claim 2, characterized in that: The stop rod unit (4.1) comprises a rotating rod (4.11) rotatably connected to the box body (1); one end of the rotating rod (4.11) is elastically hinged to a limit rod (4.12); one side of the limit rod (4.12) is provided with a stopper (4.13) fixed to the rotating rod (4.11); and the limit rod (4.12) is capable of contacting the connecting arm (3.2).

4. A fire emergency lighting and evacuation indication lighting device according to claim 3, characterized in that: A knob block (4.2) is fixed on one end of the rotating rod (4.11) extending outside the box body (1).

5. A fire emergency lighting and evacuation indication lighting device according to claim 3, characterized in that: The driving block (5.2) comprises an iron column block (5.21) capable of being magnetically fixed by an electromagnet (5.1), a tooth groove surface (5.22) is provided on the side of the iron column block (5.21), and the iron column block (5.21) has a lifting space in the vertical direction inside the box body (1).

6. A fire emergency lighting and evacuation indication lighting device according to claim 5, characterized in that: The first transmission unit (5.3) is a gear fixedly sleeved on the rotating rod (4.11), and the tooth surface of the gear can mesh with the tooth groove surface (5.22).

7. A fire emergency lighting and evacuation indication lighting device according to claim 6, characterized in that: The second transmission unit (5.4) comprises a toothed ring (5.41) meshing with the tooth groove surface (5.22); a plurality of evenly distributed fan-shaped cavities (5.42) are provided on the inner wall surface of the ring body of the toothed ring (5.41); each fan-shaped cavity (5.42) is provided with a strip plate (5.43) fixed to the shaft (3.1); each strip plate (5.43) is connected to the cavity wall of the fan-shaped cavity (5.42) via a spring (5.44).

8. A fire emergency lighting and evacuation indication lighting device according to claim 7, characterized in that: The cabin space of the recessed cabin structure (1.2) is a rectangular space, and a sliding channel (1.3) for vertical movement of the driving block (5.2) is formed between the wall surface of the recessed cabin structure (1.2) facing the inside of the box shell (1.1) and the inner wall surface of the box shell (1.1), and the sliding channel (1.3) can limit the movement of the driving block (5.2) on the horizontal plane.

9. A fire emergency lighting and evacuation indication lighting device according to claim 8, characterized in that: The tooth groove surface (5.22) comprises a long groove (5.221) formed on the side of the iron column block (5.21), and a plurality of slots (5.222) evenly arranged in parallel are formed on the bottom of the long groove (5.221).

10. A method for controlling a fire emergency lighting and evacuation indication lighting device, characterized in that: The fire emergency lighting and evacuation indication lighting device according to any one of claims 1 to 7 comprises the following steps: When the electromagnet (5.1) is powered off and demagnetized, the drive block (5.2) is released and falls in the lifting space, the lamp body (2) switches from the stowed position to the searchlight position, and the blocking rod unit (4.1) switches from the first state to the second state.

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