Shadowless irradiation mechanism and trenchless pipeline repair shadowless lamp

Abstract

The shadowless irradiation mechanism comprises a lamp body, supporting pieces are arranged at the two ends of the lamp body, a plurality of lamp sets are installed between the supporting pieces, the lamp sets are parallel to the axis of the lamp body, and the irradiation directions of the lamp sets are evenly distributed on the section of a pipeline lining in a radial mode and coincide with one another. A plurality of obliquely-irradiating lamp beads are evenly distributed on the outer surface of at least one supporting piece, and the irradiation direction of the obliquely-irradiating lamp beads is that the corresponding end of the lamp body inclines outwards and coincides with each other. According to the shadowless irradiation mechanism and the trenchless pipeline repairing shadowless lamp, the multiple lamp sets parallel to the axis of the pipeline are arranged, all the positions of the inner wall of the pipeline are irradiated in a radial shape at the same time, the shadow area is compensated through refraction and reflection of light rays, the shadowless irradiation effect at the positions of the lamp bodies is achieved, and during trenchless pipeline repairing work, the shadowless irradiation effect is achieved. The light-cured area can be uniformly irradiated, and non-uniformly-cured parts are prevented from occurring.

Description

Technical Field

[0001] This invention relates to the technical field of light-curing repair of pipelines, and in particular to a shadowless irradiation mechanism and a shadowless lamp for trenchless pipeline repair. Background Technology

[0002] CIPP (Cured Infrared Polymerization) is an advanced trenchless pipe repair technology. It involves inserting a fiberglass tube impregnated with photosensitive resin into the pipe to be repaired, inflating it, and then curing it using ultraviolet light. This forms a strong inner lining, creating a hard protective layer inside the pipe, allowing for repair without excavation. This method eliminates the need for scaffolding, pipe turning, and water usage, offering advantages such as environmental friendliness, economy, and trenchless repair.

[0003] In existing trenchless repair UV lamp assemblies, multiple lamp sections are often arranged in a row. The lamp section is usually cylindrical or multifaceted. The LED UV lamp beads or UV mercury lamp tubes are arranged in the middle of the lamp section or on the outer surface of the middle of the lamp section. Because there are no lamp beads on the front and back sides of the lamp section, there is no sufficient light source in the middle gap between the lamp sections during construction. Compared with the direct light source surface of the lamp section, there is a significant shadow. This results in more time required for curing during construction, uneven curing, low construction efficiency, and affects the quality of pipeline engineering. Summary of the Invention

[0004] In view of the problem of shadows cast by existing shadowless lamps used for trenchless pipeline repair, this invention is proposed.

[0005] Therefore, the purpose of this invention is to provide a shadowless irradiation mechanism, which aims to provide uniform irradiation during pipeline repair and avoid the generation of shadows.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a shadowless irradiation mechanism, including a lamp body, with support members at both ends of the lamp body, and a plurality of lamp groups installed between the support members. The lamp groups are parallel to the axis of the lamp body, and the irradiation direction of each lamp group is evenly distributed radially on the cross section of the pipe bushing and coincides with each other. At least one of the support members has a plurality of obliquely irradiating lamp beads evenly distributed on the outer surface. The irradiation direction of the obliquely irradiating lamp beads is that the corresponding ends of the lamp body are inclined outward and coincide with each other.

[0007] As a preferred embodiment of the shadowless irradiation mechanism of the present invention, each lamp group is provided with a plurality of lamp beads, the effective beam angle of the lamp group on the pipe cross section is 120° to 150°, and the beam angles of adjacent lamp groups overlap by 15° to 55°.

[0008] In a preferred embodiment of the shadowless irradiation mechanism of the present invention, the intersection angle between the axis of the lamp bead disposed on the support member and the axis of the support member is an acute angle.

[0009] As a preferred embodiment of the shadowless illumination mechanism of the present invention, a plurality of heat dissipation plates are installed in the center of the lamp body, heat dissipation fins are installed on both sides of each lamp group, and obstacle crossing guide strips are installed on the support member.

[0010] As a preferred embodiment of the shadowless irradiation mechanism of the present invention, the lamp body has a heat dissipation space and the lamp groups have heat dissipation gaps.

[0011] The beneficial effects of this invention are as follows: By setting up multiple light groups parallel to the pipeline axis, the invention simultaneously irradiates all positions of the pipeline inner wall in a radial pattern. Through the refraction and reflection of light, the shadow areas are compensated for, achieving a shadowless irradiation effect at the light body. During trenchless pipeline repair work, it can achieve uniform irradiation of the light curing area, preventing uneven curing. Furthermore, the tilted light beads can provide additional irradiation to the front and rear ends of the light body, increasing the irradiation range and compensating for the light on the outside of the light body.

[0012] The present invention also provides the following technical solution: a non-excavation pipeline repair shadowless lamp, used to provide uniform illumination during non-excavation pipeline repair, including the above-mentioned non-excavation pipeline repair shadowless lamp, and further including a plurality of intermediate bodies that are softly connected to each other in sequence, and a head body that is softly connected to the intermediate bodies in the forward direction; a camera is provided at one end of the head body facing the moving direction, and the camera is coaxially arranged with the head body.

[0013] As a preferred embodiment of the non-excavation pipeline repair shadowless lamp of the present invention, wherein: both ends of the intermediate body are provided with obliquely illuminating lamp beads, and the end of the head body with the camera is not provided with obliquely illuminating lamp beads; the illumination ranges of the obliquely illuminating lamp beads of the intermediate body and the head body overlap at least partially.

[0014] As a preferred embodiment of the non-excavation pipeline repair shadowless lamp of the present invention, the head body and the intermediate body, and the intermediate body and the intermediate body are all connected to each other by connectors.

[0015] As a preferred embodiment of the trenchless pipeline repair shadowless lamp of the present invention, the connector includes corresponding connectors disposed on the head body and the intermediate body, the connectors being coaxially disposed with the head body and the intermediate body, and a flexible cable being disposed between each connector.

[0016] As a preferred embodiment of the non-excavation pipeline repair shadowless lamp of the present invention, the head body and the intermediate body are both provided with heat-resistant covers on the outer surface of the support, and the surface of the heat-resistant covers is provided with a number of holes corresponding to lamp beads.

[0017] As a preferred embodiment of the trenchless pipeline repair shadowless lamp of the present invention, wherein: the heat-resistant cover is a protective shell covering both ends of the intermediate body and the head body, and the heat-resistant cover is made of polytetrafluoroethylene material.

[0018] As a preferred embodiment of the non-excavation pipeline repair shadowless lamp of the present invention, wherein: the head body and the middle body are provided with lamp holders at both ends that are adapted to the inner wall of the pipeline, and the lamp holders are provided with a number of moving wheels.

[0019] The beneficial effects of this invention are as follows: By setting inclined LED beads at both ends of the lamp body and using calculated cables of appropriate length, this invention solves the problem of insufficient light source and shadows in the middle intervals between lamp bodies within the duct during construction, achieving a shadowless lighting effect.

[0020] By disassembling the shadowless lamp into multiple lamp bodies that can be combined with each other, different numbers of lamp bodies can be combined according to the different lengths of the repair area, so as to adapt to different repair work. Furthermore, the lamp bodies can be disassembled during transportation and storage to reduce the space occupied. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments will be briefly introduced. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the lamp body of the shadowless illumination mechanism of the present invention.

[0023] Figure 2 This is a schematic diagram of the shadowless irradiation mechanism of the present invention installed inside the pipe bushing.

[0024] Figure 3 This is a schematic diagram of the internal structure of the intermediate body of the shadowless irradiation mechanism of the present invention.

[0025] Figure 4 This is a schematic diagram of the intermediate structure of the shadowless lamp for trenchless pipeline repair according to the present invention.

[0026] Figure 5 This is a schematic diagram of the head body of the non-excavation pipeline repair shadowless lamp of the present invention.

[0027] Figure 6 This is a schematic diagram showing the irradiation range of the inclined lamp beads in the inner cross section of the pipeline bushing of the shadowless lamp for trenchless pipeline repair of the present invention. Detailed Implementation

[0028] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0031] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include three-dimensional spatial dimensions of length, width, and depth.

[0032] Example 1

[0033] Reference Figures 1-3 The first embodiment of the present invention provides a shadowless irradiation mechanism, which includes a lamp body 100 and is adapted to a pipe bushing T.

[0034] The lamp body 100 has support members 101 at both ends, and several lamp groups 102 are installed between the support members 101. The lamp groups 102 are parallel to the axis of the lamp body 100. The irradiation direction of each lamp group 102 is evenly distributed radially on the cross section of the pipe bushing T and coincides with each other. At least one support member 101 has several obliquely irradiating lamp beads 103 evenly distributed on its outer surface. The irradiation direction of the obliquely irradiating lamp beads 103 is that the corresponding ends of the lamp body 100 are tilted outward and coincide with each other.

[0035] In order to fit the inner wall of the pipe, the lamp body 100 must be cylindrical or polygonal. In order to be evenly radially arranged, each lamp group 102 must be arranged in a circular array along the axis of the lamp body 100. In this way, the lamp body 100 can simultaneously irradiate the inner wall of the pipe with ultraviolet light in all directions. Combined with the refraction and reflection of the light itself, it can achieve all-round irradiation of the inner wall of the pipe and avoid the shadow generated by the lamp body 100 itself from affecting the light curing effect.

[0036] Each lamp group 102 has several LED beads 103. The effective beam angle of the lamp group 102 on the pipe cross-section is 120° to 150°. The beam angles of adjacent lamp groups 102 overlap by 15° to 55°. The irradiation direction of the LED beads 103 is towards the inner wall of the pipe bushing T. If the effective beam angle is less than 120°, the irradiation effect of the LED beads 103 at the edge of the irradiation range will overlap, resulting in the light intensity at the overlapping position of each lamp group 102 being less than that at the direct irradiation position, causing uneven photocuring. If the effective beam angle is greater than 150°, there will be too much overlap, requiring more lamp groups 102, making it difficult to control costs and heat generation.

[0037] Furthermore, the effective beam angle of a single lamp group 102 is 135°, and each lamp group 102 has a 35° beam angle overlap on the lamp body 100, ensuring that there are no blind spots in the illumination of the lamp group 102 within the pipe bushing area.

[0038] Furthermore, refer to Figure 3 The intersection angle α between the axis of the lamp bead 103 mounted on the support 101 and the axis of the support 101 forms an acute angle, allowing illumination of the gaps between multiple lamp bodies 103 when multiple lamp bodies 103 are combined. The angle α ranges from 30° to 60°, and the angle setting principle is the same as that of the lamp group 102. This allows the device to illuminate the entire area inside the pipe bushing T at once. In addition to achieving a shadowless effect, the multiple obliquely illuminating lamp beads 103 can also compensate for shadows by reflecting and refracting each other when the lamp body 100 is equipped with a movable frame or other equipment.

[0039] During use, the pipe bushing T is installed normally inside the pipe. The lamp body 100 moves along the pipe from inside the pipe bushing T. The movement can be by pulling or other methods that allow the lamp body 100 to move along the pipe. Simultaneously, all lamp bodies 100 irradiate the inner wall of the pipe bushing T with ultraviolet light, thereby curing the pipe bushing T within the pipe for repair. During irradiation, the individual lamp groups 102 of the lamp body 100 irradiate the inner wall of the pipe bushing T radially, with some overlapping irradiation areas, in conjunction with the tilted irradiation of the lamp beads 103. This ensures uniform irradiation of the inner wall of the pipe bushing T during light curing, preventing shadows.

[0040] Example 2

[0041] Reference Figure 3 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that: a plurality of heat sinks 104 are installed in the center of the lamp body, heat sinks 105 are installed on both sides of each lamp group 102, and obstacle crossing guides 106 are installed on the support member 101. The obstacle crossing guides 106 are installed between each lamp group 102, and the obstacle crossing guides 106 and the heat sinks 105 protrude from the lamp group 102 to prevent the lamp group 102 from being scratched when passing.

[0042] The heat sink 105 is bolted to the base plate of the lamp assembly 102, and the mating surface is coated with thermal grease. Heat is radiated into the space through the base plate of the lamp assembly 102, the heat sink 104, the obstacle crossing guide strip 106 and other heat dissipation components, so that the lamp bead temperature is below 115℃, ensuring the reliability of the lamp assembly 102.

[0043] The heat sinks 105 on both sides of the lamp assembly 102 are connected at the bottom of the lamp assembly 102 to form a U-shaped plate structure that wraps around the lamp assembly 102. The heat sinks 105 are made of a material with high thermal conductivity. The heat sink 104 is connected to the heat sinks 105 and is also made of a material with high thermal conductivity, thereby increasing the heat dissipation area of ​​each lamp assembly 102. The obstacle crossing guide strip 106 is also made of a material with high thermal conductivity, which not only serves the purpose of obstacle crossing but also increases the heat dissipation area. The heat sink has openings for installing air pressure sensors and other sensors selected according to the working conditions, so that the temperature and pressure inside the pipeline can be monitored during use.

[0044] Furthermore, a heat dissipation space A is left inside the lamp body, and a heat dissipation gap B is left between each lamp group 102.

[0045] By leaving a heat dissipation space A inside the lamp body, more heat can be accommodated, while the heat dissipation gaps B between each lamp group 102 can better dissipate the heat in the heat dissipation space A from the lamp body 100. Without the heat dissipation gaps B, the cylindrical lamp bodies 100 form a closed cavity, and the operating temperature of the stacked lamp groups 102 is higher than the external ambient temperature. The temperature inside the lamp body 100 can only be dissipated through the shell, and the heat accumulates inside the lamp body 100, which leads to an increase in the temperature resistance required for internal wires and sensors, and a surge in cost. On the other hand, the open polygonal surface heat dissipation area with heat dissipation space A and heat dissipation gaps B is not much different from that of the cylindrical lamp, but the open design is conducive to internal and external air convection, which can more effectively dissipate heat and cool down.

[0046] In use, the heat generated by the lamp assembly 102 is dissipated by itself and transferred to the heat sink 105, which in turn transfers it to the heat dissipation plate 104. The heat sink 105 and heat dissipation plate 104 increase the heat dissipation area. The heat dissipation space A inside the lamp body is used to contain the heat, and the heat in the heat dissipation space A is discharged through the various heat dissipation gaps B. This enhances the heat dissipation capacity of the lamp body. By enhancing the heat dissipation capacity, the lamp beads 103 of this device can be arranged more densely, thereby shortening the length of the lamp assembly 102 and thus reducing the length of the lamp body 100, which facilitates transportation and storage.

[0047] The remaining structure is the same as that in Example 1.

[0048] Example 3

[0049] Reference Figures 4-6This is the third embodiment of the present invention. Unlike the second embodiment, this embodiment also provides a trenchless pipe repair shadowless lamp, including the above-mentioned trenchless pipe repair shadowless lamp, and also includes a plurality of intermediate bodies 200 that are softly connected to each other in sequence. A head body 300 is also softly connected in the forward direction of the intermediate bodies 200. A camera 301 is provided at one end of the head body 300 facing the moving direction, and the camera 301 is coaxially arranged with the head body 300.

[0050] The head body 300, through the camera 301 installed on the head, can view the situation inside the pipe in real time, and can also check whether the combination of the head body 300 and the intermediate body 200 has moved to the position of the pipe bushing T.

[0051] Both ends of the intermediate body 200 are equipped with angled LED beads 103, while the end of the head body 300 where the camera 301 is located does not have an angled LED bead 103. The illumination ranges of the angled LED beads 103 of the intermediate body 200 and the head body 300 overlap to at least a portion. By omitting the LED bead 103 at the end of the head body where the camera 301 is located, the heat generated around the camera 301 can be reduced, thereby reducing the impact of temperature on the camera 301 and lowering the heat resistance requirements of the camera 301.

[0052] The head body 300 and the intermediate body 200, as well as the intermediate bodies 200 themselves, are interconnected via connectors 400. Each connector 400 includes corresponding connectors 401 on the head body 300 and the lamp body 100. The connectors 401 are coaxially arranged with the head body 300 and the intermediate body 200, and flexible cables 402 are provided between each connector 401. The connectors 401 can be aviation plugs, and the flexible cables 402 are used for power transmission. The flexible cables 402 can follow the intermediate bodies 200 and the head body 300 as they bend in conduits.

[0053] In use, the head body 300 serves as the head, with a camera 301 mounted at its head end. The tail end of the head body 300 is flexibly connected to the intermediate body 200 via a connector 400. The intermediate body 200 can also be connected to other intermediate bodies 200 via connectors 400; the specific number installed depends on the repair work requirements. When using this device, the head body 300 moves along the pipeline, and the intermediate bodies 200 behind it move along the pipeline simultaneously. Workers can monitor the device's position through the image captured by the camera 301 until the device reaches the pipeline bushing T for photocuring.

[0054] The remaining structure is the same as that in Example 2.

[0055] Example 4

[0056] Reference Figure 3 and Figure 6This is the fourth embodiment of the present invention, which differs from the third embodiment in that: both the head body 300 and the intermediate body 200 are provided with heat-resistant covers 500 on the outer surface of the support member 101, and the surface of the heat-resistant covers 500 has holes corresponding to several LED beads 103. Temperature and pressure sensors can also be installed to detect the temperature and pressure conditions inside the pipeline. Detecting the temperature is to determine if the device is overheating, and detecting the pressure is to determine if the pipeline bushing T is properly fitted to the inner wall of the pipeline.

[0057] The heat-resistant casing 500 is a protective shell covering both ends of the intermediate body 200 and the head body 300. The heat-resistant casing 500 is made of polytetrafluoroethylene (PTFE). The heat-resistant casing 500 can be conical, hemispherical, or other shapes, as long as it covers the periphery of both ends of the head body 300 and the intermediate body 200, thus protecting the lamp body. The reasons for using PTFE are as follows: First, the ambient temperature during pipeline repair work is approximately 110℃, and combined with the accumulated heat during the operation of this device, the overall operating temperature is approximately 150℃. PTFE has excellent high-temperature resistance and is not easily affected by temperature. Second, although aluminum or steel can also meet the high-temperature resistance requirements, they are heavier than PTFE for the same volume, allowing PTFE to reduce the overall weight of the device. Third, PTFE has high strength, which better protects the internal structure. Finally, PTFE has good self-lubricating properties, preventing jamming within the pipeline and ensuring smooth flow.

[0058] The head body 300 and the intermediate body 200 are equipped with lamp holders at both ends that conform to the inner wall of the pipe, and the lamp holders are equipped with several casters. By providing casters, the head body 300 and the intermediate body 200 can be moved more easily.

[0059] In use, the head body 300 and the intermediate body 200 are supported in the pipe by the moving wheels. After the power to move is provided by pulling or other means, the head body 300 and the intermediate body 200 move by the moving wheels. The position of the moving wheels avoids the lamp beads 103 set on the inclined surface of the support 101. In this way, during photocuring, the projection of the moving wheels will be compensated by multiple lamp beads 103, and no shadow of the moving wheels will be left on the pipe wall.

[0060] The remaining structure is the same as that in Example 3.

[0061] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise changed, and the nature or number or position of discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. Therefore, the invention is not limited to the particular embodiments but extends to a variety of modifications that still fall within the scope of the appended claims.

[0062] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the currently considered best mode for carrying out the invention, or those features that are not relevant to implementing the invention) may be omitted.

[0063] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A shadowless irradiation mechanism, characterized in that: include, A lamp body (100) is provided with support members (101) at both ends of the lamp body (100). Several lamp groups (102) are installed between the support members (101). The lamp groups (102) are parallel to the axis of the lamp body (100). The irradiation direction of each lamp group (102) is evenly distributed radially on the cross section of the pipe bushing (T) and coincides with each other. At least one of the support members (101) has several obliquely irradiating lamp beads (103) evenly distributed on its outer surface. The irradiation direction of the obliquely irradiating lamp beads (103) is inclined outward from the corresponding end of the lamp body (100) and coincides with each other.

2. The shadowless irradiation mechanism according to claim 1, characterized in that: Each of the lamp groups (102) is provided with a plurality of lamp beads (103), and the effective beam angle of the lamp group (102) on the pipe cross section is 120° to 150°, and the beam angles of adjacent lamp groups (102) overlap by 15° to 55°.

3. The shadowless irradiation mechanism according to claim 1 or 2, characterized in that: The intersection angle (α) between the axis of the lamp bead (103) disposed on the support member (101) and the axis of the support member (101) is an acute angle, and the angle (α) ranges from 30° to 60°.

4. The shadowless irradiation mechanism according to claim 3, characterized in that: Several heat sinks (104) are installed in the center of the lamp body, heat sinks (105) are installed on both sides of each lamp group (102), and obstacle crossing guide strips (106) are installed on the support member (101).

5. The shadowless irradiation mechanism according to claim 4, characterized in that: The lamp body has a heat dissipation space (A), and the lamp groups (102) have heat dissipation gaps (B).

6. A non-excavation pipeline repair shadowless lamp, comprising the shadowless irradiation mechanism as described in any one of claims 1, 2, 4, and 5, characterized in that: It also includes, A number of intermediate bodies (200) are softly connected to each other in sequence, and a head body (300) is also softly connected to the intermediate bodies (200) in the forward direction; A camera (301) is provided at one end of the head body (300) facing the direction of movement, and the camera (301) is coaxially arranged with the head body (300).

7. The shadowless lamp for trenchless pipeline repair according to claim 6, characterized in that: Both ends of the intermediate body (200) are provided with obliquely illuminating LED beads (103), while the end of the head body (300) with the camera (301) is not provided with obliquely illuminating LED beads (103). The illumination ranges of the obliquely irradiated lamp beads (103) of the intermediate body (200) and the head body (300) overlap by at least a portion.

8. The shadowless lamp for trenchless pipeline repair according to claim 7, characterized in that: The head body (300) and the intermediate body (200), and the intermediate body (200) and the intermediate body (200) are all connected to each other by connectors (400).

9. The shadowless lamp for trenchless pipeline repair according to claim 8, characterized in that: The connector (400) includes corresponding connectors (401) disposed on the head body (300) and the intermediate body (200). The connectors (401) are coaxially disposed with the head body (300) and the intermediate body (200), and a flexible cable (402) is provided between each connector (401).

10. The shadowless lamp for trenchless pipeline repair according to any one of claims 7, 8, and 9, characterized in that: Both the head body (300) and the intermediate body (200) are provided with heat-resistant covers (500) on the outer surface of the support member (101). The heat-resistant covers (500) have holes corresponding to several lamp beads (103) on their surface. The heat-resistant covers (500) are protective shells covering both ends of the intermediate body (200) and the head body (300). The heat-resistant covers (500) are made of polytetrafluoroethylene material.

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