Protective cap provided with central sliding circular tube structure and capable of blocking photothermal radiation

Abstract

The invention discloses a protective cap provided with a central sliding circular tube structure and capable of blocking photothermal radiation, which comprises a fixing piece, an exhaust circular tube is fixed on the outer side of the fixing piece, a plurality of top cover bone brackets are uniformly distributed on the periphery of the lower end of the exhaust circular tube, one end of each top cover bone bracket is hinged with the fixing piece, and the lower end of the exhaust circular tube is arranged above a top cover feather leaf; the upper end of a cap barrel is hinged to the position, close to the other end, of the top cover bone supports, the lower end of the cap barrel is connected with a head tying belt, a cap edge ring is arranged on the periphery of the outer side, close to the lower end, of the cap barrel, and the portion, located on the outer circle of the cap barrel, of the lower end of the cap edge ring is connected with a cap curtain. The top cover bone supports are connected with an operation structure which enables the top cover bone supports to be stored or unfolded in a unified mode. The stress of the whole structure of the protective cap can be concentrated on the central sliding round pipe, and the top cover and the cap barrel are controlled to be stored or unfolded in a unified mode through the sliding structure.

Description

Technical Field

[0001] The invention relates to a protective cap which is provided with a central sliding circular tube structure and can block light and heat radiation, belonging to the technical field of human body protective products. Background Art

[0002] Due to the rapid warming of the global climate, reports have come from all over the world that local temperatures have hit record highs, with the highest temperature reaching 40℃~50℃; due to the emergence of extremely high temperatures, a large number of people engaging in outdoor activities have suffered from heat stroke, heat stroke, and severe heat stroke deaths.

[0003] The occurrence of extreme high temperature weather is mainly due to the influence of the sun's super-strong light and thermal radiation energy on the earth. According to the thermal radiation theory, aluminum foil has excellent insulation properties for solar light and thermal radiation energy. The absorption rate and emissivity of aluminum foil to light and thermal radiation energy are particularly small, about 0.02 to 0.06. Aluminum foil used for thermal insulation has shown its excellent thermal insulation properties and good economic effects in some fields.

[0004] Through searching, we know that the existing technology of making protective caps with aluminum foil cloth is a Chinese patent number CN211932803U that discloses a foldable ventilation cap. After a detailed analysis of the patent technology, it is found that the patent technology has the following defects: According to the description of the specification, the protective cap is overall synchronously foldable, the folding line of the cap barrel is the Z line, and the folding line of the cap top cover is also the Z line of the cap barrel. As can be seen from the figure, the cap barrel is arranged vertically, and the folding line Z line is just in the flexible part between the two column pieces of the cap barrel, which can be folded along the diameter line; because the cap top cover is arranged horizontally, the cap top cover must be fixed on the upper part of the cap barrel, and the two cannot be folded at the same time, which makes the operation cumbersome and the storage or unfolding efficiency is not high.

[0005] The existing patent CN118120998A discloses a protective cap that can isolate solar heat radiation, is ventilated and retractable. However, the following problems exist: when the protective cap is to be stored, the force-enhancing ring must first be removed, and then the cylindrical body and the connecting column can be folded up. In addition, when the connecting columns need to be folded up, they are relatively scattered due to the lack of mutual restrictions, and cannot be folded up synchronously at one time. Summary of the invention

[0006] The technical problem to be solved by the present invention is: how to control the top cover and the cap tube body to be stored or unfolded in a unified manner.

[0007] To solve the above technical problems, the technical solution of the present invention is to provide a protective cap with a central sliding circular tube structure that can block light and heat radiation, including a fixing member. An exhaust circular tube is fixed to the outside of the fixing member. A plurality of top cover bone brackets are evenly distributed around the lower end of the exhaust circular tube. One end of each of the plurality of top cover bone brackets is hinged to the fixing member. The lower end of the exhaust circular tube is located above the top cover feathers. A plurality of mounting seats are hinged to the fixing member. The upper ends of the plurality of mounting seats are connected to the top cover feathers. The upper ends of the plurality of top cover bone brackets are hinged to the upper end of the cap cylinder body near the other end. A head tie is connected to the lower end of the cap cylinder body. A cap brim ring is provided on the outer periphery near the lower end of the cap cylinder body. The lower end of the cap brim ring is connected to a cap curtain on the outer circle of the cap cylinder body. It is characterized in that an operating structure for uniformly storing or unfolding the plurality of top cover bone brackets is connected to the plurality of top cover bone brackets.

[0008] Preferably, the operating structure includes a plurality of transmission rods. One end of each transmission rod is hinged to a top cover bone bracket, and the other end of each transmission rod is connected to a central sliding circular tube. A linkage structure is jointly formed by the central sliding circular tube, the transmission rods, the top cover bone brackets, and the columnar pieces of the cap cylinder body.

[0009] Preferably, the connection point of one end of each transmission rod and the top cover bone bracket is located between the connection point of the top cover bone bracket connecting the cap cylinder body and the connection point of the top cover bone bracket connecting the fixing member.

[0010] Preferably, one end of each transmission rod is hinged to the inner side end of its corresponding top cover bone bracket, and the central sliding circular tube slides inside the fixing member.

[0011] Preferably, the fixing member is a sliding sleeve. The other end of each transmission rod is hinged to the lower end of the central sliding circular tube. A convex ring with an outer diameter larger than that of the sliding sleeve is provided at the upper end of the central sliding circular tube.

[0012] Preferably, the central sliding circular tube is located at the uppermost position of the center point of the cap cylinder body.

[0013] Preferably, the cap cylinder body is a vertical cylindrical structure. The cap cylinder body includes a cylindrical aluminum foil cloth. A plurality of columnar pieces are evenly distributed around the periphery of the aluminum foil cloth of the cap cylinder body. The columnar pieces are all longitudinally arranged; the cap brim ring is a circular ring body and is arranged on the outside of the cap cylinder body; the cap brim ring includes a T-shaped bracket and an aluminum foil cloth. The aluminum foil cloth of the cap brim ring is arranged on the T-shaped bracket, and the T-shaped bracket is on the outer side of the shaft chain seat at the lower end of the columnar piece of the cap cylinder body; one end of each columnar piece is hinged to one end of a top cover bone bracket, and the other end is hinged to the T-shaped bracket on the cap brim ring.

[0014] The present invention provides a protective cap with a central sliding circular tube structure that can block light and heat radiation, which can make the overall structure of the protective cap focus on the central sliding circular tube, and control the unified storage or unfolding of the top cover and the cap cylinder body through the sliding structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1). A central sliding circular tube sliding structure is provided. By using a central sliding circular tube, a force transmission rod, a top cover bone bracket, and a cap cylinder column piece, the four components are synchronously linked, so that the top cover bone bracket and the cap cylinder column piece are connected into the same stress system: when the protective cap needs to be unfolded, the cap cylinder and the top cover can be orderly, efficiently, and quickly transformed from a flexible body into a rigid body for more comfortable wearing; when the protective cap needs to be stored, the cap cylinder and the top cover can be orderly, efficiently, and quickly transformed from a rigid body into a flexible body; the top cover bone bracket and the cap cylinder column piece are stored towards the center point, and the volume becomes very small, which is convenient for storage and carrying.

[0017] 2). The central sliding circular tube sliding structure is provided, which can ensure that the cap cylinder structure is safer, more durable, and more convenient and comfortable to use.

[0018] 3). Guided ventilation measures are provided to ensure the safety of the head and better comfort. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a protective cap with a central sliding circular tube structure that can block light and heat radiation. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the present invention more obvious and understandable, preferred embodiments are given below in conjunction with the accompanying drawings for detailed description as follows.

[0021] The present invention provides a protective cap with a central sliding circular tube structure that can block light and heat radiation. As Figure 1 shown, it includes a cap cylinder 7, a central sliding circular tube 2, a sliding sleeve 3, an exhaust circular tube 1, a top cover vane 8, a top cover bone bracket 9, a force transmission rod 10, a cap edge ring 4, a cap curtain 6, and a head tie 5, and guided ventilation measures are provided. The central sliding circular tube 2 is arranged at the uppermost center point of the cap cylinder 7. Below the central sliding circular tube 2 are the exhaust circular tube 1 and the sliding sleeve 3. The outside of the central sliding circular tube 2 is the sliding sleeve 3. The outside of the sliding sleeve 3 is the exhaust circular tube 1. Below the exhaust circular tube 1 is the top cover vane 8. Below the top cover vane 8 is the top cover bone bracket 9. Below the top cover bone bracket 9 is the cap cylinder 7. The outside of the cap cylinder 7 is the cap edge ring 4. Below the cap edge ring 4 is the cap curtain 6. Below the inner side of the cap cylinder 7 is the head tie 5.

[0022] A plurality of top cover bone brackets 9 are evenly distributed around the lower end of the exhaust circular tube 1. In the middle of the inner side of the exhaust circular tube 1, a plurality of mounting seats 11 are provided. The plurality of mounting seats 11 are hinged to the middle of the sliding sleeve 3. One end of the sliding sleeve 3 is hinged to the plurality of top cover bone brackets 9. The upper end of the cap cylinder 7 is hinged to a position near the other end of the plurality of top cover bone brackets 9. A head tie 5 is connected to the lower end of the cap cylinder 7. When the lower end of the cap cylinder 7 is worn on the user's head, it is put on the wearer's chin through the head tie 5, so as to fix the cap cylinder 7 on the user's head. A cap brim ring 4 is provided on the outer periphery near the lower end of the cap cylinder 7. The cap brim ring 4 is supported by each bracket, and the bracket is hinged to the outer side of the cap cylinder 7. A cap curtain 6 is connected to the lower end of the cap brim ring 4 and located on the outer circle of the cap cylinder 7 for shielding the face. One end of each mounting seat 11 is connected to one end of a top cover feather 8 above the position of the plurality of top cover bone brackets 9. One end of the top cover feather 8 is located inside the lower end of the exhaust circular tube 1, that is, when the top cover feather 8 is unfolded, the lower end of the exhaust circular tube 1 contacts the outer side of the top cover feather 8.

[0023] An operating structure for uniformly storing or unfolding the plurality of top cover bone brackets 9 is connected to the plurality of top cover bone brackets 9. The operating structure is a central sliding circular tube structure. The central sliding circular tube structure includes a plurality of force transmission rods 10. One end of each force transmission rod 10 is hinged to a top cover bone bracket 9, and the other end of each force transmission rod 10 is connected to the central sliding circular tube 2. Through the central sliding circular tube 2, the force transmission rods 10, the top cover bone brackets 9, and the upright pieces of the cap cylinder 7, a linkage structure is jointly formed. By pulling or pushing the central sliding circular tube 2, the opening or contraction of the top cover bone brackets 9 is realized, so as to realize the unfolding or storage of the protective cap.

[0024] Wherein, the connection point of one end of each force transmission rod 10 and the top cover bone bracket 9 is located between the connection point of the top cover bone bracket 9 connecting the cap cylinder 7 and the connection point of the top cover bone bracket 9 connecting the sliding sleeve 3.

[0025] An installation hole is provided at the upper end of the top cover bone bracket 9 and is hinged to the shaft chain seat 12 at the lower end of the sliding sleeve 3. The cover plate at the top of the exhaust circular tube 1 is fixedly connected to the top of the sliding sleeve 3, and the exhaust circular tube 1 is fixed to the sliding sleeve 3 by its middle part and upper part.

[0026] In this embodiment, one end of each force transmission rod 10 is hinged to the inner side end of its corresponding top cover bone bracket 9. The central sliding circular tube 2 is slidably arranged in the sliding sleeve 3. The other end of each force transmission rod 10 is hinged to the lower end of the central sliding circular tube 2. A convex ring with an outer diameter larger than that of the sliding sleeve 3 is provided at the upper end of the central sliding circular tube 2 to prevent the central sliding circular tube 2 from slipping out of the sliding sleeve 3. The force transmission process of the central sliding circular tube structure is divided into a downward sliding force transmission process and an upward sliding force transmission process. The central sliding circular tube structure is designed according to the "Law of Conservation of Mechanical Energy".

[0027] The central sliding circular tube structure is composed of multiple components, and the linkage structure needs to be designed and manufactured under the guidance of the same set of multi-aspect equal division method; the shaft chain seats at the bottom of the central sliding circular tube 2, the shaft chain seats at the lower part of the sliding sleeve 3, and the shaft chain seats at the upper part of the column pieces of the cap cylinder 7 are the same structural force system of the linkage components, and the same set of 8-aspect equal division method must be used for positioning.

[0028] The central sliding circular tube 2 is a sliding tube. The outside of the central sliding circular tube 2 is the sliding sleeve 3. The central sliding circular tube 2 can slide up and down inside the sliding sleeve 3; a shaft chain seat is arranged on the outer side of the lower end of the central sliding circular tube 2. Eight shaft chain seats are centered on the center point of the central sliding circular tube 2, and the 8-aspect equal division method is used to position the shaft chain seats.

[0029] This 8-aspect equal division method is the first set of 8-aspect equal division method, which can be used for positioning the shaft chain seats on the outer side of the bottom of the sliding sleeve 3 and the shaft chain seats on the upper part of the column pieces of the cap cylinder 7; the upper part of the central sliding circular tube 2 is about 40 mm higher than the top of the exhaust circular tube 1.

[0030] The central sliding circular tube 2 is arranged in the middle of the sliding sleeve 3. A shaft chain seat 12 is arranged at the lower part of the outside of the sliding sleeve 3 and is positioned according to the first set of 8-aspect equal division method. An installation seat 11 for the top cover vane 8 is arranged above the shaft chain seat. The top cover vane 8 is arranged in an upper and lower two-layer structure. The installation seat 11 of the upper-layer top cover vane 8 is located above the installation seat 11 of the lower-layer top cover vane 8. Each layer of the top cover vane 8 is composed of multiple top cover vanes 8, and the positions of the top cover vanes 8 in different layers are misaligned by 45° with those of the top cover vanes 8 in the other layer for positioning; an installation seat for the exhaust circular tube 1 is arranged above the top cover vane 8; the distance between the bottom end of the sliding sleeve 3 and the bottom end of the central sliding circular tube 2 is about 40 mm, and the upper end of the sliding sleeve 3 is the same as the upper end of the exhaust circular tube 1. The exhaust circular tube 1 is fixed on the sliding sleeve 3.

[0031] The exhaust circular tube 1 has the following special functions:

[0032] 1), Exhaust function. Multiple exhaust ports are arranged on the upper part, and the hot air emitted from the head is discharged from the exhaust ports; 2). Positioning function of the sliding sleeve; 3) Exhaust air duct function; 4), Positioning function of the top cover vane 8; 5). Operation positioning function when the protective cap is stored and deployed. The top surface and side surface (except the exhaust ports) of the exhaust circular tube 1 are provided with aluminum cloth heat insulation, with the colored surface of the aluminum foil cloth on the outside and the smooth surface on the inside.

[0033] The function of the transmission rod 10 is to transmit the downward driving force or upward lifting force of the central sliding circular tube 2 to the top cover bone bracket 9. Installation holes are arranged at the lower end and the upper end of the transmission rod 10. The lower installation hole is linked to the shaft chain seat at the bottom of the central sliding circular tube 2; the upper installation hole of the transmission rod 10 is linked to the shaft chain seat in the middle of the top cover bone bracket 9.

[0034] The upper end of the skull cap support 9 is provided with a mounting hole, and the mounting hole is connected to the shaft chain seat at the bottom of the sliding sleeve 3; the middle part of the skull cap support 9 is provided with a shaft chain seat, about 35 mm away from the upper end, and the shaft chain seat is connected to the mounting hole at the upper end of the force transmission rod 10; the lower part of the skull cap support 9 is provided with a short arm mounting seat, which is connected to the shaft chain seat at the upper part of the column piece of the cap cylinder body 7; the lower part of the skull cap support 9 extends about 30 mm outside the top of the cap cylinder body 7; when the skull cap support 9 is unfolded, the inclination angle with the center line of the central sliding circular tube 2 is about 50 degrees (upper limit point), and when the skull cap support 9 is retracted, the inclination angle with the central sliding circular tube 2 changes to about 0 degrees (lower limit point), in a vertically downward state.

[0035] The top cover blade 8 is arranged above the skull cap support 9, with a small upper head and a large lower head. The upper head is about 20 mm wide, the lower head is about 60 mm wide, and the total length is about 150 mm; a concave opening is provided at the upper head, and the lower head is arc-shaped; the top cover blade 8 is mainly made of aluminum foil cloth, with a colored surface on the upper side and a smooth surface on the lower side. The upper part is fixed on the mounting seat, and the lower part is located on the skull cap support 9.

[0036] For the guided ventilation measure, due to the aluminum foil cloth provided on the protective cap, although it can isolate the damage of solar heat radiation energy, it cannot solve the problem of heat dissipation from the human head to the outside. Without a heat dissipation measure, the protective cap cannot be used; setting the guided ventilation measure becomes a very important measure; the protective cap is provided with two air ducts that enter the cap body from bottom to top; there is a gap between the inner side of the column piece of the cap cylinder body 7 and the aluminum foil cloth, which is the first air duct, and there is a gap between the cap cylinder body 7 and the top cover, which is the second air duct; an exhaust circular tube 1 is provided at the upper part of the top cover, and an exhaust port is provided at the upper part of the exhaust circular tube 1; there is a gap between the outer shaft chain seats of the sliding sleeve 3, which is an upward air duct, and the air entering from the first and second air ducts at the lower part can discharge the heat dissipated from the head together from the exhaust port to the outside of the cap, so as to maintain the comfort of the head.

[0037] The cap curtain 6 is to provide more comprehensive protection against solar heat radiation. The cap curtain 6 is hung below the T-shaped bracket of the cap rim ring 4, about 30 mm away from the cap cylinder body 7, with a height of about 110 mm, to protect the head and face in place. A notch is opened in the front, and both the outer side and the inner side of the cap curtain 6 are decorated with colored cloth to form a colored surface.

[0038] The head tie 5 is installed in the mounting hole at the lower part of the inner side of the column piece of the cap cylinder body 7.

[0039] Among them, the cap rim ring 4 is a circular ring body, arranged on the outside of the cap cylinder body 7, with a width of about 80 mm; it is composed of a T-shaped bracket and aluminum foil cloth. The aluminum foil cloth is arranged on the T-shaped bracket, and the T-shaped bracket is installed on the shaft chain seat at the lower part and the outer side of the column piece of the cap cylinder body 7. The T-shaped bracket moves up and down on the shaft chain seat; the upper side of the aluminum foil cloth is a colored surface, and the lower side is a smooth surface. A control buckle is provided on the shaft chain seat to lock the movement of the T-shaped bracket.

[0040] The cap cylinder body 7 is a vertical cylindrical structure, including a plurality of upright column pieces (the number is the same as that of the top cover bone brackets 9, and in this embodiment, it is 8). The upright column pieces are all arranged longitudinally and enclose a circle to form a cylindrical structure. Fixing points for fixing the aluminum foil cloth are respectively arranged at the upper and lower ends of the upright column pieces of the cap cylinder body 7. An axial connection seat is arranged at the upper part inside the upright column pieces; an axial connection seat is arranged at the lower part outside the upright column pieces; an installation hole is arranged at the lower part inside the upright column pieces; the upright column pieces are in a concave structure: the outer side of the aluminum foil cloth is a colored surface, and the inner side is a smooth surface. Each upright column piece is hinged to one end of a top cover bone bracket 9, and the other end is hinged to the bracket on the cap edge ring 4. The cap edge ring 4 is used to expand the lower end of the cap cylinder body 7 and play a certain positioning role.

[0041] Specifically, the connection structure between the cap cylinder body 7 and the cap edge ring 4 is the same as the connection structure and principle in the existing patent CN118120998A. The guided ventilation measure is also the same as the structural principle of the guided ventilation system in the existing patent CN118120998A. The cap cylinder body 7 is equivalent to the cylindrical body in the existing patent CN118120998A.

[0042] The working principle of the present invention is as follows:

[0043] I. The force transmission process during downward sliding:

[0044] When the user does not need to wear the protective cap, the protective cap needs to be stored; first, unlock the lock of the cap edge ring 4 on the cap cylinder body 7, hold the exhaust circular tube 1 at the top of the cap with one hand, lift the protective cap longitudinally, hold the top of the central sliding circular tube 2 with the other hand, and push the central sliding circular tube 2 forcefully to make it slide downward from the sliding sleeve 3: At this time, the central sliding circular tube 2 transmits the downward force to the force transmission rod 10 through the axial chain seat, the force transmission rod 10 transmits the downward force to the top cover bone bracket 9, the top cover bone bracket 9 transmits the downward force to the upright column pieces of the cap cylinder body 7, and the upright column pieces move downward and inward under the action of the downward force; all the top cover bone brackets 9 and the upright column pieces are inwardly stored until they are in a vertically downward state under the action of the downward force. The aluminum cloth on the cap cylinder body 7 follows the upright column pieces to be inwardly stored, and the cap cylinder body 7 has changed from a rigid body to a flexible body.

[0045] II. The force transmission process during upward sliding:

[0046] When the user needs to wear the protective cap, hold the exhaust round tube 1 at the top with one hand, lift the protective cap into a vertical position, hold the top of the central sliding round tube 2 with the other hand, and lift the central sliding round tube 2 forcefully upward. The central sliding round tube 2 slides upward in the sleeve 3. The central sliding round tube 2 transmits the upward force to the force transmission rod 10 through the lower shaft chain seat. The force transmission rod 10 transmits the upward force to the top cover bone bracket 9. The top cover bone bracket 9 transmits the upward force to the column piece of the cap cylinder 7. Under the action of the upward force, the column piece moves upward and outward. At the same time, the aluminum foil cloth on the cap cylinder 7 also moves upward and outward following the column piece until the top cover bone bracket 9 moves from the 0-degree point to about 50 degrees. This point is the limit point, and the cap cylinder 7 has changed from a flexible body to a rigid body.

[0047] Note: The above-mentioned shaft chain seat 12 and mounting seat 11 are the end structures for connecting one component to another component. Shaft chain seats 12 are provided at the ends of the components that are hinged to each other. The components are hinged or rotatably connected through the shaft chain seats 12.

Claims

1. A protective cap with a central sliding circular tube structure for blocking light and heat radiation, comprising a fixing member, an exhaust circular tube (1) is fixed on the outside of the fixing member, a plurality of top cover bone brackets (9) are evenly distributed around the lower end of the exhaust circular tube (1), one end of each of the plurality of top cover bone brackets (9) is hinged to the fixing member, the lower end of the exhaust circular tube (1) is arranged above the top cover vane (8), a plurality of mounting seats (11) are hinged on the fixing member, the upper ends of the plurality of mounting seats (11) are connected to the top cover vane (8), the upper end of the cap cylinder (7) is hinged at a position near the other end of each of the plurality of top cover bone brackets (9), a head tie (5) is connected to the lower end of the cap cylinder (7), a cap edge ring (4) is arranged on the outer periphery near the lower end of the cap cylinder (7), and a cap curtain (6) is connected to the lower end of the cap edge ring (4) on the outer circle of the cap cylinder (7), characterized in that, An operating structure for uniformly storing or deploying the multiple top skull scaffolds (9) is connected to the multiple top skull scaffolds (9).

2. The protective cap with a central sliding circular tube structure capable of blocking light and heat radiation according to claim 1, characterized in that, The operating structure includes multiple force transmission rods (10). One end of each force transmission rod (10) is hinged to a top skull scaffold (9), and the other end of each force transmission rod (10) is connected to the central sliding circular tube (2). A linkage structure is jointly formed by the central sliding circular tube (2), the force transmission rods (10), the top skull scaffolds (9), and the upright pieces of the cap cylinder body (7).

3. The protective cap with a central sliding circular tube structure capable of blocking light and heat radiation according to claim 2, characterized in that, The connection point of one end of each force transmission rod (10) and the top skull scaffold (9) is located between the connection point of the top skull scaffold (9) and the cap cylinder body (7) and the connection point of the top skull scaffold (9) and the fixing member.

4. The protective cap with a central sliding circular tube structure for blocking light and heat radiation as claimed in claim 3, characterized in that, One end of each force transmission rod (10) is hinged to the inner end of a corresponding top skull scaffold (9), and the central sliding circular tube (2) is slidably arranged within the fixing member.

5. The protective cap with a central sliding circular tube structure capable of blocking light and heat radiation according to claim 4, wherein The fixing member is a sliding sleeve (3). The other end of each force transmission rod (10) is hinged to the lower end of the central sliding circular tube (2), and a convex ring with an outer diameter larger than that of the sliding sleeve (3) is provided at the upper end of the central sliding circular tube (2).

6. The protective cap with a central sliding circular tube structure capable of blocking light and heat radiation as described in claim 1, wherein The central sliding circular tube (2) is arranged at the uppermost position of the center point of the cap cylinder body (7).

7. The protective cap with a central sliding circular tube structure for blocking light and heat radiation according to claim 1, characterized in that, The cap cylinder body (7) is a vertical cylindrical structure. The cap cylinder body (7) includes a cylindrical aluminum foil cloth. A plurality of upright pieces are evenly distributed around the aluminum foil cloth of the cap cylinder body (7), and the upright pieces are all longitudinally arranged; the cap edge ring (4) is an annular body and is arranged on the outer side of the cap cylinder body (7); the cap edge ring (4) includes a T-shaped bracket and an aluminum foil cloth. The aluminum foil cloth of the cap edge ring (4) is arranged on the T-shaped bracket, and the T-shaped bracket is on the shaft chain seat outside the lower end of the upright piece of the cap cylinder body (7); one end of each upright piece is hinged to a top skull scaffold (9), and the other end is hinged to the T-shaped bracket on the cap edge ring (4).

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