Navigation signal lamp light shield
By designing the adjustment and sealing components of the navigation signal light hood, the problems of heat accumulation in incandescent lamps and material embrittlement in low-temperature environments are solved, achieving effective heat dissipation and heat preservation of the signal light, ensuring navigation safety.
Patent Information
- Application Number
- CN202511318527.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-16
- Publication Date
- 2025-10-17
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The navigation signal lights of old ships use incandescent lamps as light sources, which leads to heat accumulation, shortened filament life, easy cracking of the glass cover, embrittlement of the material in low temperature environments, increased risk of structural fracture, and may cause degradation of waterproof performance and short-circuit corrosion problems.
A navigation signal light shade is designed. Through adjusting components and closing components, a micro motor is used to drive the rotating shaft and the panel to achieve heat dissipation and sealing, prevent water vapor from entering, enhance the thermal insulation effect, and prevent material shrinkage or embrittlement.
Effective heat dissipation prevents filament oxidation, prevents glass cover cracking, reduces the risk of structural fracture, improves waterproof performance, avoids condensation on the lens to block light, and ensures navigation safety.
Smart Images
Figure CN120799402A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of navigation signal light, and particularly relates to a navigation signal light shade. BACKGROUND
[0002] When a medium or large ship sails on the sea, various signal devices must be installed to show the key information such as the position, nature, working state and towing condition of the ship, so as to serve as a signal tool for sea communication. Among them, the ship navigation signal light system is a key component for safe navigation of the ship, and is an important lighting system for ensuring safe navigation of the ship at night. However, the navigation signal light of some old sailing ships still uses incandescent lamps as light sources. A large amount of heat is generated during the working process of the incandescent lamp, and if the heat cannot be dissipated in time, a series of problems will be caused.
[0003] On the one hand, high temperature will accelerate the oxidation process of the filament, thereby shortening the service life of the filament; on the other hand, the glass cover may be broken due to thermal expansion and contraction effect. Therefore, the heat dissipated by the incandescent lamp must be effectively dredged in time. In addition, the ship may also encounter a low-temperature environment during sailing, which will also adversely affect the navigation signal light. Low temperature will cause the material of the lamp body to shrink or become brittle, increasing the risk of structure fracture; at the same time, low temperature may also make the sealing rubber strip harden or shrink, resulting in a decrease in waterproof performance. Once seawater seeps into the internal circuit, serious problems such as short circuit or corrosion may be caused, threatening the safe navigation of the ship. SUMMARY
[0004] The purpose of the present application is to solve the problem that the navigation signal light of some old sailing ships still uses incandescent lamps as light sources. A large amount of heat is generated during the working process of the incandescent lamp, and if the heat cannot be dissipated in time, high temperature will accelerate the oxidation process of the filament, thereby shortening the service life of the filament; the glass cover may be broken due to thermal expansion and contraction effect; in addition, the ship may also encounter a low-temperature environment during sailing, which will also adversely affect the navigation signal light; low temperature will cause the material of the lamp body to shrink or become brittle, increasing the risk of structure fracture; at the same time, low temperature may also make the sealing rubber strip harden or shrink, resulting in a decrease in waterproof performance; once seawater seeps into the internal circuit, serious problems such as short circuit or corrosion may be caused, threatening the safe navigation of the ship. A navigation signal light shade is provided.
[0005] In order to achieve the above purpose, the present application adopts the following technical solution: a navigation signal light shade comprising a cylinder, a signal light body connected to the cylinder through a fixed plate fixed by an inner wall, a plurality of heat dissipation openings formed in the outer periphery of the fixed plate, an adjusting assembly arranged in the cylinder, and a sealing assembly. The adjusting assembly includes a mounting plate fixed to the inner wall of the cylinder, a micro motor mounted on the mounting plate, an output end of the micro motor connected with a rotating shaft through the mounting plate, an inner embedding plate connected with the bottom end of the rotating shaft through an extension piece, a rotating plate rotatably connected with the cylinder through a groove formed in the inner wall of the cylinder, a plurality of air vents formed in the inner part of the rotating plate and communicated with the heat dissipation openings, a rotating plate rotatably connected with the inner wall of the groove, a plurality of limiting grooves formed in the surface of the rotating plate, and a transparent arc-shaped plate connected with the inner wall of the limiting groove through a moving piece. By starting the micro motor, the micro motor drives the inner embedding plate to rotate, and by controlling whether the air vent coincides with the heat dissipation opening, it is determined whether to heat the signal lamp body.
[0006] As a further description of the above-mentioned navigation signal lamp shade: The extension piece includes a groove formed in the inner part of the rotating shaft and a limiting groove formed in the outer wall, a lifting column slidably connected with the inner wall of the groove, and a limiting rod fixedly connected with the outer wall of the groove and in contact with the limiting groove, and the bottom of the lifting column extends out of the groove and is connected with the inner embedding plate.
[0007] As a further description of the above-mentioned navigation signal lamp shade: The inner embedding plate is fixedly connected with a connecting plate, an inner groove is formed in the inner part of the connecting plate, a sliding block is slidably connected with the inner wall of the inner groove, and an electric push rod is installed between the bottom of the mounting plate and the top of the sliding block.
[0008] As a further description of the above-mentioned navigation signal lamp shade: The inner part of the rotating plate and the rotating plate is provided with an inner embedding groove matched with the inner embedding plate.
[0009] As a further description of the above-mentioned navigation signal lamp shade: The moving piece includes a plurality of moving grooves formed in the inner part of the fixed plate, a moving block slidably connected with the inner wall of the moving groove, a transparent arc-shaped plate connected with the top of the moving block, and a limiting rod connected with the limiting groove and in contact with the bottom of the moving block.
[0010] As a further description of the above-mentioned navigation signal lamp shade: The closing assembly includes a plurality of link frames fixed to the inner wall of the cylinder and a plurality of gear teeth connected with the outer periphery of the limiting rod, a transmission piece and a closing piece connected with the bottom of the link frame.
[0011] As a further description of the above-mentioned navigation signal lamp shade: The transmission piece includes a rotating rod rotatably connected with the bottom of the link frame, a rotating gear fixedly connected with the outer wall of the rotating rod, a positioning frame fixed to the bottom of the link frame, a gear strip slidably connected with the inner wall of the positioning frame, and the rotating gear, the gear strip and the gear teeth are in meshing engagement.
[0012] As a further description of a navigation signal light hood of the above technology: The closing piece comprises a telescopic spring connected to the bottom of the connecting frame, one end of the telescopic spring is fixed with a closing plate, and the gear bar is in contact with the closing plate through an inclined surface.
[0013] In summary, due to the use of the above-mentioned technology, the beneficial effects of the navigation signal light shade of the present invention are as follows: through the provided adjustment component and the sealing component, when the signal light body is cooled, the micro motor is started, and the transmission is transmitted through the rotating shaft, the limiting rod, and the lifting column, driving the inner plate to rotate the rotating plate in the groove. When the ventilation port and the heat dissipation port coincide with each other, the heat flows out to achieve heat dissipation; When the temperature is low at sea and no heat dissipation is required, the micro motor is started again to rotate in the opposite direction. The rotating plate is then driven in the opposite direction, and the ventilation port and the heat dissipation port are not overlapped. The cylinder is sealed to prevent water vapor from entering. After the closure is completed, the electric push rod is started to retract and the embedded plate is moved from the embedded groove of the rotating plate to the embedded groove of the rotating plate. After the embedded plates are embedded, the micro motor is started again to rotate the rotating plate through transmission, driving the limit rod and the moving block to move, so that the transparent curved plate gathers into a circle to enclose the heat, preventing the signal light material from shrinking and brittle at low temperature, and reducing the risk of structural fracture; In order to enhance the sealing of the cylinder when gathering heat, the limit rod moves to the stroke limit, the gear drives the rotating gear to drive the gear bar to slide, and push the closing plate down to close the air vent, preventing heat from flowing out, improving the thermal insulation effect, and avoiding condensation on the lens to block light and reduce the viewing distance. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 Shows a schematic diagram of a cylinder according to the present invention; Figure 2 It shows a schematic diagram of the internal structure of the cylinder according to the present invention; Figure 3 A schematic diagram of the structure of the regulating assembly according to the present invention is shown; Figure 4 A schematic diagram of the groove structure according to the present invention is shown; Figure 5 It shows a schematic structural diagram of the mounting plate according to the present invention; Figure 6 It shows that according to the present invention Figure 5 A partial enlarged view of the middle A; Figure 7 Shows a schematic structural diagram of a closure assembly according to the present invention; Figure 8 It shows that according to the present invention Figure 7 A partial enlarged view of point B in the middle; Figure 9 Shown is a schematic structural diagram of a closing plate according to the present invention.
[0015] Legend: 10, barrel; 11, fixed plate; 12, signal lamp body; 13, heat dissipation opening; 20, adjusting assembly; 21, mounting plate; 22, micro motor; 221, rotating shaft; 222, embedded plate; 223, embedded groove; 224, groove; 225, rotating plate; 226, air vent; 23, rotating plate; 231, limiting groove; 24, electric push rod; 241, connecting plate; 242, inner groove; 243, sliding block; 244, slotted; 245, lifting column; 246, limiting rod; 247, limiting groove; 25, limiting rod; 251, moving groove; 252, moving block; 253, transparent arc-shaped plate; 30, closing assembly; 31, gear tooth; 32, engagement frame; 33, rotating rod; 34, rotating gear; 35, positioning frame; 36, gear strip; 37, telescopic spring; 38, closing plate; 39, inclined surface. DETAILED DESCRIPTION
[0016] The navigation signal lamp shade will be described clearly and completely in the embodiments of the present application with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.
[0017] As Figures 1-9As shown, the present application provides: including the cylinder 10, the cylinder 10 is connected with the signal lamp body 12 through the inner wall fixed plate 11, the outer periphery of the fixed plate 11 is provided with several heat dissipation openings 13, further comprising: the adjusting assembly 20 and the closed assembly 30 arranged in the cylinder 10, the adjusting assembly 20 includes the mounting plate 21 fixed in the inner wall of the cylinder 10, the mounting plate 21 is installed with the micro motor 22, the output end of the micro motor 22 is connected with the rotating shaft 221 through the mounting plate 21, the bottom end of the rotating shaft 221 is connected with the embedded plate 222 through the telescopic piece, the telescopic piece includes the slot 244 arranged in the inner wall of the rotating shaft 221 and the limiting groove 247 of the outer wall, the inner wall of the slot 244 is slidably connected with the lifting column 245, and the outer wall of the slot 244 is fixedly connected with the limiting rod 246 in contact with the limiting groove 247, the bottom of the lifting column 245 extends out of the slot 244 and is connected with the embedded plate 222, the embedded plate 222 is fixedly connected with the connecting plate 241, and the inner wall of the slot 242 is slidably connected with the sliding block 243, the bottom of the mounting plate 21 and the top of the sliding block 243 are installed with the electric push rod 24, the cylinder 10 is rotatably connected with the rotating plate 225 through the recess 224 arranged in the inner wall, the inner wall of the rotating plate 225 is provided with several air vents 226 in communication with the heat dissipation openings 13, the inner wall of the recess 224 is rotatably connected with the rotating plate 23, the inner wall of the rotating plate 225 and the rotating plate 23 is provided with the embedded groove 223 matched with the embedded plate 222, the surface of the rotating plate 23 is provided with several limiting grooves 231, and the inner wall of the limiting groove 231 is connected with the transparent arc plate 253 through the moving piece; When the signal lamp body 12 is cooled, the micro motor 22 is started, the micro motor 22 drives the rotating shaft 221 to rotate, since the limiting rod 246 is limited by the limiting groove 247, with the rotation of the rotating shaft 221, the limiting rod 246 drives the lifting column 245 to rotate, when the lifting column 245 rotates, the embedded plate 222 embedded in the embedded groove 223 of the rotating plate 225 rotates, and then the embedded plate 222 drives the rotating plate 225 to rotate in the recess 224, when the rotating plate 225 rotates to the air vent 226 coincides with the heat dissipation opening 13, the heat generated by the signal lamp body 12 in the cylinder 10 will flow out along the air vent 226 and the heat dissipation opening 13, and the heat dissipation of the signal lamp body 12 is realized; When sailing on the sea encounters low temperature environment, without the need to signal lamp body 12 heat dissipation, also start micro motor 22, but this time let micro motor 22 drive rotating shaft 221 reverse rotation, in the rotating shaft 221 reverse rotation process, the restriction of the restriction groove 247 restriction rod 246 will drive lifting column 245 reverse rotation, lifting column 245 drive embedded in the rotating plate 225 embedded groove 223 in the embedded plate 222 reverse rotation, make the embedded plate 222 drive rotating plate 225 in the recess 224 reverse rotation, when rotating plate 225 rotation to air hole 226 and heat dissipation port 13 do not coincide, cylinder 10 will realize closed, can effectively prevent water vapor along the air hole 226 and heat dissipation port 13 into the cylinder 10 inside.
[0018] As shown in Figure 1 , Figure 2 、 Figure 3 The moving piece includes a plurality of moving grooves 251 opened in the fixed plate 11, and the inner wall of the moving groove 251 is slidably connected with a moving block 252, the top of the moving block 252 is connected with a transparent arc-shaped plate 253, and the bottom of the moving block 252 is connected with a limiting rod 25 in contact with the limiting groove 231; After completing the closing operation of the cylinder 10, the electric push rod 24 is started to make it retract, and the electric push rod 24 will pull the sliding block 243 slidingly embedded in the connecting plate 241 when it retracts, and the sliding block 243 will further pull the embedded plate 222 at the bottom of the connecting plate 241, so that the embedded plate 222 is moved out of the embedded groove 223 of the rotating plate 225, and at the same time, in the process of retraction of the electric push rod 24, the lifting column 245 and the limiting rod 246 will move in the slot 244 and the limiting groove 247, and finally the embedded plate 222 is moved into the embedded groove 223 inside the rotating plate 23; When the embedded plate 222 is completely embedded with the embedded groove 223 of the rotating plate 23, the micro motor 22 is started, and the micro motor 22 drives the rotating shaft 221 to rotate. Since the limiting rod 246 is limited by the limiting groove 247, with the rotation of the rotating shaft 221, the limiting rod 246 will drive the lifting column 245 to rotate together. When the lifting column 245 rotates, it will drive the embedded plate 222 embedded in the embedded groove 223 of the rotating plate 23 to rotate, and further make the embedded plate 222 drive the rotating plate 23 to rotate in the recess 224. With the rotation of the rotating plate 23, the limiting rod 25 embedded in the limiting groove 231 will move in the limiting groove 231 with the rotation of the rotating plate 23. When the limiting rod 25 moves, it will drive the moving block 252 to move in the moving groove 251 of the fixed plate 11, and the movement of the moving block 252 will further drive the transparent arc-shaped plate 253 to gather together, and finally form a circle. In this way, the heat emitted by the signal lamp body 12 will be retracted and wrapped around the signal lamp body 12, effectively preventing the material of the signal lamp body 12 from shrinking or embrittlement in low temperature environment, and reducing the risk of structural fracture; When the heat of the signal lamp body 12 does not need to be concentrated, the micro motor 22 is started again to drive the rotating shaft 221 to rotate reversely. During the reverse rotation of the rotating shaft 221, the limiting rod 246 limited by the limiting groove 247 drives the lifting column 245 to rotate reversely, the lifting column 245 drives the embedded plate 222 embedded in the embedded groove 223 of the rotating plate 23 to rotate reversely, and the embedded plate 222 drives the rotating plate 23 to rotate reversely in the groove 224. With the reverse rotation of the rotating plate 23, the limiting rod 25 embedded in the limiting groove 231 moves reversely in the limiting groove 231, and the moving block 252 moves reversely in the moving groove 251 of the fixed plate 11, and then the transparent arc-shaped plate 253 moves away from each other, so that the heat of the signal lamp body 12 is released.
[0019] As shown in Figure 1 , Figure 2 , Figure 7 , Figure 8 , Figure 9 The closing assembly 30 includes a plurality of connecting frames 32 fixed on the inner wall of the barrel 10 and a plurality of gear teeth 31 connected to the outer periphery of the limiting rod 25. The bottom of the connecting frame 32 is connected with a transmission member and a closing member. The transmission member includes a rotating rod 33 rotatably connected to the bottom of the connecting frame 32, and the outer wall of the rotating rod 33 is fixedly connected with a rotating gear 34. The bottom of the connecting frame 32 is fixed with a positioning frame 35, and the inner wall of the positioning frame 35 is slidably connected with a gear strip 36. The rotating gear 34 is engaged with the gear strip 36 and the gear teeth 31. The closing member includes an extension spring 37 connected to the bottom of the connecting frame 32. One end of the extension spring 37 is fixed with a closing plate 38, and the gear strip 36 and the closing plate 38 are in contact through a slope 39. In order to further enhance the closing property of the barrel 10 when the heat is concentrated, when the limiting rod 25 moves to the limit position of the limiting groove 231, the gear teeth 31 arranged on the outer periphery of the limiting rod 25 will contact the rotating gear 34 and drive the rotating gear 34 to rotate. With the continuous rotation of the rotating gear 34, it will drive the gear strip 36 engaged therewith to slide in the positioning frame 35. When the gear strip 36 slides, it will gradually move towards the closing plate 38 until it finally contacts the closing plate 38. Because the gear strip 36 and the closing plate 38 are in contact through the slope 39, when the gear strip 36 contacts the closing plate 38 and continues to move, the gear strip 36 will generate a downward resistance force on the closing plate 38, forcing the closing plate 38 to descend, while pulling the extension spring 37 to elongate. When the closing plate 38 is lowered, the air vents 226 on the rotating plate 225 will be effectively closed, so that even when the transparent arc-shaped plate 253 is gathered, heat can be prevented from flowing out from the gaps of the air vents 226, thereby significantly improving the heat preservation effect inside the cylinder 10. Moreover, after the closing is completed, the heat filled inside the cylinder 10 can effectively prevent the lens surface of the cylinder 10 from being obscured by water vapor condensation, thereby avoiding the occurrence of a reduced visible distance; Conversely, when the limiting rods 25 move away from each other in the limiting grooves 231, the plurality of gear teeth 31 arranged on the outer periphery of the limiting rods 25 will come into contact with the rotating gear 34 and drive the rotating gear 34 to start rotating; With the continuous rotation of the rotating gear 34, it will drive the gear strip 36 engaged therewith to slide in the positioning frame 35. When the gear strip 36 slides, it will gradually move away from the closing plate 38 until it finally comes out of contact with the closing plate 38. When the gear strip 36 comes out of contact with the closing plate 38, the stretched telescopic spring 37 rebounds and pulls the closing plate 38 back to its original position.
[0020] Working principle: when the signal lamp body 12 is cooled, the micro motor 22 is started, which drives the rotating shaft 221 to rotate. Since the limiting rod 246 is limited by the limiting groove 247, it will rotate with the lifting column 245, thereby driving the embedded plate 222 embedded in the embedded groove 223 in the rotating plate 225 to rotate, so that the rotating plate 225 rotates in the groove 224. When the air vents 226 of the rotating plate 225 coincide with the heat dissipation port 13, the heat of the signal lamp body 12 in the cylinder 10 will flow out along the air vents 226 and the heat dissipation port 13, thereby achieving heat dissipation. When sailing at sea encounters low temperature and does not need to be cooled, the micro motor 22 is also started, but it drives the rotating shaft 221 to rotate in the opposite direction. At this time, the limiting rod 246 drives the lifting column 245 to rotate in the opposite direction, thereby driving the embedded plate 222 to rotate in the opposite direction, so that the rotating plate 225 rotates in the opposite direction in the groove 224. When the air vents 226 do not coincide with the heat dissipation port 13, the cylinder 10 is closed to prevent water vapor from entering. After the cylinder 10 is closed, the electric push rod 24 is started to retract, which pulls the sliding block 243 slidingly embedded in the connecting plate 241, thereby pulling the embedded plate 222 at the bottom of the connecting plate 241 to move out of the embedded groove 223 of the rotating plate 225. At the same time, the lifting column 245 and the limiting rod 246 move in the slot 244 and the limiting groove 247, so that the embedded plate 222 moves to the embedded groove 223 of the rotating plate 23. After the inner plate 222 is completely embedded in the embedded groove 223 of the rotating plate 23, the micro motor 22 is started again to drive the rotating shaft 221 to rotate, the limiting rod 246 drives the lifting column 245 to rotate, and then drives the inner plate 222 embedded in the embedded groove 223 of the rotating plate 23 to rotate, so that the rotating plate 23 rotates in the groove 224, the rotating plate 23 drives the limiting rod 25 to move in the limiting groove 231, and then drives the moving block 252 to move in the moving groove 251 of the fixed plate 11, so that the transparent arc-shaped plates 253 are gathered into a circle, the heat of the signal lamp body 12 is wrapped, the material is prevented from shrinking or embrittlement at low temperature, and the risk of structural fracture is reduced. In order to enhance the sealing property of the cylinder 10 when the heat is gathered, when the limiting rods 25 move to the stroke limit and are close to each other in the limiting grooves 231, the outer peripheral gear teeth 31 are in contact with the rotating gear 34 and drive the rotating gear 34 to rotate, the rotating gear 34 drives the gear strip 36 to slide in the positioning frame 35, the gear strip 36 gradually approaches and is in contact with the inclined surface 39 of the closing plate 38, and when the closing plate 38 is continuously moved, the closing plate 38 is driven to descend, the extension spring 37 is elongated, the closing plate 38 descends to close the air vent 226 of the rotating plate 225, the heat is prevented from flowing out from the gap, the heat preservation effect of the cylinder 10 is improved, and the lens surface water vapor condensation is also avoided to block light and reduce the visible distance.
[0021] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any person skilled in the art can make equivalent replacement or change according to the technical navigation signal lamp shade and the invention concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A navigation signal light shade, comprising a cylinder (10), the cylinder (10) being connected to a signal light body (12) via a fixing plate (11) fixed to the inner wall, the fixing plate (11) being provided with a plurality of heat dissipation openings (13) on the outer periphery thereof, characterized in that: Also includes: An adjusting assembly (20) and a closing assembly (30) are arranged inside the cylinder (10); The regulating assembly (20) includes a mounting plate (21) fixed to the inner wall of the cylinder (10), a micro motor (22) is mounted on the mounting plate (21), an output end of the micro motor (22) passes through the mounting plate (21) and is connected to a rotating shaft (221), the bottom end of the rotating shaft (221) is connected to an inner plate (222) via a telescopic member, the cylinder (10) is rotatably connected to a rotating plate (225) via a groove (224) provided on the inner wall, a plurality of air vents (226) communicating with the heat dissipation port (13) are provided inside the rotating plate (225), the inner wall of the groove (224) is rotatably connected to the rotating plate (23), a plurality of limiting grooves (231) are provided on the surface of the rotating plate (23), and the inner wall of the limiting groove (231) is connected to a transparent arc plate (253) via a moving member; By starting the micro motor (22), the micro motor (22) drives the inner panel (222) to rotate, and by controlling whether the air vent (226) overlaps with the heat dissipation port (13), it is determined whether the signal lamp body (12) is to be cooled.
2. The navigation signal light shade according to claim 1, characterized in that: The telescopic member includes a slot (244) provided inside the rotating shaft (221) and a limiting slot (247) on the outer wall. The inner wall of the slot (244) is slidably connected to a lifting column (245), and the outer wall of the slot (244) is fixedly connected to a limiting rod (246) in contact with the limiting slot (247). The bottom of the lifting column (245) extends out of the slot (244) and is connected to an inner panel (222).
3. The navigation signal light shade according to claim 2, characterized in that: A connecting plate (241) is fixed on the inner panel (222), an inner groove (242) is provided inside the connecting plate (241), and a sliding block (243) is slidably connected to the inner wall of the inner groove (242), and an electric push rod (24) is installed between the bottom of the mounting plate (21) and the top of the sliding block (243).
4. The navigation signal light shade according to claim 3, characterized in that: The interiors of the rotating plate (225) and the rotary plate (23) are both provided with inner embedding grooves (223) adapted to engage with the inner embedding plate (222).
5. The navigation signal light shade according to claim 1, characterized in that: The movable member comprises a plurality of movable grooves (251) provided inside the fixed plate (11), wherein the inner wall of the movable groove (251) is slidably connected to a movable block (252), the top of the movable block (252) is connected to a transparent arc-shaped plate (253), and the bottom of the movable block (252) is connected to a limiting rod (25) in contact with the limiting groove (231).
6. The navigation signal light shade according to claim 5, characterized in that: The closing assembly (30) comprises a plurality of connecting frames (32) fixed to the inner wall of the cylinder (10) and a plurality of gear teeth (31) connected to the outer periphery of the limiting rod (25). The bottom of the connecting frame (32) is connected to a transmission member and a closing member.
7. The navigation signal light shade according to claim 6, characterized in that: The transmission member includes a rotating rod (33) rotatably connected to the bottom of the connecting frame (32), and the outer wall of the rotating rod (33) is fixedly connected to a rotating gear (34), the bottom of the connecting frame (32) is fixed with a positioning frame (35), the inner wall of the positioning frame (35) is slidably connected to a gear bar (36), and the rotating gear (34) is meshed with the gear bar (36) and the gear teeth (31).
8. The navigation signal light shade according to claim 7, characterized in that: The closing member includes a telescopic spring (37) connected to the bottom of the connecting frame (32), a closing plate (38) is fixed to one end of the telescopic spring (37), and the gear bar (36) and the closing plate (38) are in contact through an inclined surface (39).