JP2017053473A - Light irradiation device, light-emitting unit, and method for manufacturing light irradiation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a light irradiation device, a light-emitting unit and a method for manufacturing a light irradiation device which can undergo manufacturing matching the diameter of a pipe conduit, such as a sewage pipe while suppressing time and cost required for the manufacturing.SOLUTION: The light irradiation device has a light-emitting unit 4 including an approximately cylindrical body 9 configured by connecting a plurality of unit members 11 in a circumferential direction, and a plurality of light sources 10 provided on an outer surface of the body 9. The plurality of unit members 11 respectively include a base plate 11a forming the outer surface of the body 9 to have a light source 10 mounted, a first connection part 11b formed integrally with the base plate 11a, and second connection parts 11c formed integrally with the base plate 11a to be engaged with first connection parts 11b of adjacent unit members 11.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a light irradiation device, a light emitting unit, and a method for manufacturing the light irradiation device used in an FRP inner surface repair method for repairing a pipe such as a sewer pipe.

  Conventionally, a tubular uncured liner impregnated with a photocurable resin in a glass fiber fabric is closely attached to the inner peripheral surface of the tube, and the inner surface of the tube is cured by irradiating light from the inside. There is an FRP inner surface repair method that covers a fiber reinforced plastic (FRP) liner.

  In addition, in the FRP inner surface construction method, there is a light irradiation device that irradiates light such as a light emitting diode (LED) onto an uncured liner that is inserted into a tube and impregnated with a photocurable resin (for example, Patent Document 1).

  When using a light source with high directivity such as a light emitting diode, unless the distance from the FRP attachment tube liner to the light source is kept within a predetermined range, the FRP attachment tube liner cannot be irradiated with light uniformly. Unevenness in resin curing occurs.

  Therefore, the light emitting unit to which the light source is attached in the light irradiation device must be manufactured according to the diameter of the tube to be repaired.

JP 2010-64261 A

  However, since pipes such as sewer pipes have various diameters, there is a problem that it takes labor and cost to manufacture a light irradiation device that matches the pipe diameter.

  The present invention has been made in view of the above problems, and while suppressing labor and cost required for manufacturing, a light irradiation device capable of being manufactured according to the diameter of a pipe such as a sewer pipe, a light emitting unit, and It aims at providing the manufacturing method of a light irradiation apparatus.

In order to solve the above problems, the present invention provides:
A light irradiation device for irradiating light to a liner impregnated with a photocurable resin in a tube,
A substantially cylindrical main body configured by connecting a plurality of unit members in the circumferential direction; and a plurality of light sources provided on an outer surface of the main body, and a light emitting unit comprising:
Each of the plurality of unit members includes a base plate that forms the outer surface, a first coupling portion that is integrally formed with the base plate, and the first unit of the adjacent unit members that are integrally formed with the base plate. There is provided a light irradiation apparatus comprising a second coupling portion engaged with the coupling portion.

  Preferably, the first coupling portion and the second coupling portion are engaged with each other so that the angle can be changed in accordance with the radial dimension of the main body.

Preferably, the first coupling portion is formed radially inward of the main body on the side of one of the unit members adjacent to the base plate,
The second coupling portion is formed radially inward of the main body on the side of the other unit member adjacent to the base plate.

  Preferably, the first coupling portion has a cut-out cylindrical shape having a C-shaped cross section that is open outward in the radial direction of the main body, and the second coupling portions of the adjacent unit members are Inserted inside.

  Preferably, the first coupling portion includes a heat radiating fin for releasing heat of the light source.

  Preferably, the unit member has the same cross-sectional shape over the entire length.

In order to solve the above-mentioned problem, the present invention
A cylindrical main body formed of a plurality of first and second unit members each having a long rectangular plate shape, wherein the first unit members and the second unit members are alternately juxtaposed side by side;
Each of the first and second unit members extends inwardly toward the inner diameter side along one long side part, and is integrally formed along the other long side part. A second coupling portion that is integrally formed extending inwardly and connected to the first coupling portion of the adjacent second and first unit members;
LEDs fixed on the outer diameter side surface of the first unit member;
There is provided a light emitting unit comprising:

  Preferably, the first and second unit members have the same cross-sectional shape over the entire length.

In order to solve the above-mentioned problem, the present invention
A substantially cylindrical main body configured by connecting a plurality of unit members in the circumferential direction; and a plurality of light sources provided on an outer surface of the main body, and a light emitting unit comprising:
A method of manufacturing a light irradiation device for irradiating light to a liner impregnated with a photocurable resin in a tube,
A base plate that forms the outer surface, a first coupling portion that is integrally formed with the base plate, and a second that is integrally formed with the base plate and engages with the first coupling portion of the adjacent unit members. A step of preparing a plurality of unit members including a coupling portion;
Selecting the number of unit members according to the diameter of the tube;
And a step of coupling the selected number of the unit members in the circumferential direction to form the main body.

  According to the present invention, there are provided a light irradiation apparatus, a light emitting unit, and a method for manufacturing the light irradiation apparatus that can be manufactured in accordance with the diameter of a pipe such as a sewer pipe while suppressing labor and cost required for the manufacture. be able to.

It is a top view which shows the light irradiation apparatus which concerns on 1st Embodiment of this application. It is an end view of the light emission unit of the light irradiation apparatus which concerns on 1st Embodiment of this application. It is a figure which shows the unit member which comprises the light emission unit of the light irradiation apparatus which concerns on 1st Embodiment of this application. (A) is a top view, (b) is an end view. It is an end view of the light emission unit of the light irradiation apparatus which concerns on 2nd Embodiment of this application.

  Hereinafter, embodiments of the present application will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a plan view showing a light irradiation apparatus 100 according to the first embodiment of the present application.

  The light irradiation device 100 includes a camera 2 disposed at the head, a plurality of light emitting units 4 attached to the rear of the camera 2 via the connecting member 3 between the camera 2 and the connecting member 3 radially outward. An arm 5 extending in all directions, a wheel 6 attached to each end of the arm 5, a temperature sensor 7 connected to the light emitting unit 4 by a connecting member 3 between the plurality of light emitting units 4, and the last light emitting unit 4 And a cable 8 connected to the cable.

  The camera 2 photographs the inside of the pipe to be repaired. The operator can observe the inside of the tube by using the image projected by the camera 2, for example, whether the liner before curing is abnormal.

  The connecting member 3 is disposed between the camera 2, the plurality of light emitting units 4, and the temperature sensor 7, and connects these members to each other. The connecting member 3 is attached so that the angle can be changed with respect to each member so that the light irradiation apparatus 100 can bend.

  The light emitting unit 4 receives light from the cable 8 through a conducting wire passing through the inside of the light irradiation device 100 and emits light to cure the photocurable resin of the liner 15. Details of the light emitting unit 4 will be described later.

  The wheel 6 is attached to the tip of an arm 5 that extends from the connecting member 3 in all directions. The wheel 6 travels on the liner 15 so that the light irradiation device 100 can smoothly move in the liner 15 according to the operation of the cable 8 by a ground worker or the like. The wheel 6 also serves as a spacer that keeps the distance between the light emitting unit 4 and the liner 15.

  The temperature sensor 7 measures the temperature inside the tube when the liner 15 is cured.

  The cable 8 supplies power to the camera 2, the light emitting unit 4, and the temperature sensor 7, and electrically connects these members and devices such as a ground monitor. The cable 8 is used by a ground worker or the like to operate the light irradiation device 100.

  FIG. 2 is an end view of the light emitting unit 4 of the light irradiation apparatus 100 according to the first embodiment of the present application. The end face of the light emitting unit 4 is shown in a state where the cover 4a (see FIG. 1) which is disposed in the tube and covers the end of the light emitting unit 4 is removed.

  The light emitting unit 4 has a main body 9 formed in a substantially cylindrical shape. A light emitting diode (LED) 10 is attached to the outer surface of the main body 9 as a light source. The light emitting diode 10 emits light upon receiving power from the ground via the cable 8. The main body 9 is covered and protected by a transparent protective cylinder 12 made of polycarbonate. The end of the main body 9 of the light emitting unit 4 and the end of the protective cylinder 12 are fixed to a cover 4 a (see FIG. 1) that covers the end of the light emitting unit 4.

  The main body 9 of the light emitting unit 4 is configured substantially in a cylindrical shape by combining a plurality of unit members 11 having the same shape in the circumferential direction. In the first embodiment, 16 unit members 11 are arranged. The main body 9 can be easily manufactured with different dimensions in the radial direction by selecting the number of unit members 11.

  In FIG. 2, a circle drawn by a solid line on the radially outer side of the light irradiation device 100 is a piping copper pipe 13 constituting the radially inner part of the pipe and a pipe constituting the radially outer part of the pipe. A steel pipe 14 is shown. A circle drawn with a broken line on the outer side in the radial direction of the light irradiation device 100 indicates the liner 15.

  The light irradiation device 100 can smoothly move on the liner 15 while maintaining the distance between the liner 15 and the light emitting unit 4 by the wheel 6 attached to the tip of the arm 5. Moreover, the main body 9 of the cylindrical light emitting unit 4 to which the light emitting diode 10 is attached has a radial dimension suitable for the diameter of the tube by making the number of unit members 11 appropriate. Yes. By sequentially moving the light irradiation device 100 configured in this way within the tube and causing the light emitting unit 4 to emit light, the uncured liner 15 is uniformly irradiated with light, and the entire liner 15 is uniformly distributed. It can be cured.

  FIG. 3 is a view showing the unit member 11 constituting the light emitting unit 4 of the light irradiation apparatus 100 according to the first embodiment of the present application. (A) is a top view, (b) is an end view.

  The unit member 11 has a long rod shape in the longitudinal direction of the light irradiation device 100, a base plate 11a to which the LED substrate 16 is attached, a first coupling portion 11b integrally formed on one side of the base plate 11a, It has the 2nd coupling | bond part 11c integrally formed in the other side of the baseplate 11a, and a pair of radiation fin 11d, 11e integrally formed in the 1st coupling | bond part 11b. The unit member 11 can be formed from various materials such as metal, plastic, and ceramics.

  The base plate 11 a has a rectangular plate shape that is long in the longitudinal direction of the light irradiation device 100. An LED substrate 16 is attached to the surface of the base plate 11a that is radially outward (hereinafter referred to as “radially outward of the main body 9”) when the main body 9 (see FIG. 2) of the light emitting unit 4 is configured. . On the LED substrate 16, six light emitting diodes 10 covered with the lens 17 are attached in the longitudinal direction.

  The first coupling portion 11 b has a substantially inverted C-shaped cross section, and has a long bar shape in the longitudinal direction of the unit member 11. In other words, the 1st coupling | bond part 11b is carrying out the notch cylindrical shape which formed the slit (open | release part) extended in an axial direction over the full length. The first coupling portion 11b has substantially the same length as the base plate 11a, is substantially parallel to the base plate 11a, and is radially inward when the main body 9 of the light emitting unit 4 is configured (hereinafter referred to as “the radial direction of the main body 9”). It is integrally formed on one side of the surface of the base plate 11a. By arranging the first coupling portion 11b in the radial direction inside the main body 9 in this way, the area of the base plate 11a is increased on the outer surface of the main body 9, and the gap between the base plates 11a adjacent in the circumferential direction is reduced. be able to. The first coupling portion 11b is integrally formed with the base plate 11a so that the slit is oriented radially outward of the main body 9. That is, the first coupling portion 11 b is formed integrally with the base plate 11 a in such a direction that the open portion of the inverted C-shaped cross section becomes the radially outer side of the main body 9.

  The second coupling portion 11 c has a C shape whose cross section is smaller than that of the first coupling portion 11 b, and has a long bar shape in the longitudinal direction of the unit member 11. In other words, the second coupling portion 11c has a notched cylindrical shape in which a diameter dimension is smaller than that of the first coupling portion 11b and a slit (opening portion) extending in the axial direction is formed over the entire length. The second coupling part 11c has substantially the same length as the base plate 11a and the first coupling part 11b. The second coupling portion 11c is substantially parallel to the base plate 11a, and is formed integrally with a portion of the surface of the base plate 11a on the radially inner side of the main body 9 opposite to the first coupling portion 11b. By disposing the second coupling portion 11c in the radial direction inside the main body 9 in this way, the area of the base plate 11a is increased on the outer surface of the main body 9, and the gap between the base plates 11a adjacent in the circumferential direction is reduced. be able to. The second coupling portion 11 c is formed integrally with the base plate 11 a so that the slit is directed radially inward of the main body 9. That is, the second coupling portion 11 c is formed integrally with the base plate 11 a in such a direction that the opening portion of the C-shaped cross section is inward of the main body 9 in the radial direction.

  The inner diameter of the first coupling portion 11b has a dimension that allows the second coupling portion 11c to be accommodated inside. That is, the inner diameter dimension of the first coupling portion 11b is substantially the same as the outer diameter dimension of the second coupling portion 11c, or larger than the outer diameter dimension of the second coupling portion 11c, or the second coupling portion 11c. It can be slightly smaller than the outer diameter. It is desirable that the adjacent unit members 11 have dimensions that allow the angle of the adjacent unit members 11 to be relatively changed in a state where the second connection portions 11c of the adjacent unit members 11 are accommodated inside the first connection portions 11b.

  Insertion of the second coupling portion 11c into the first coupling portion 11b can be performed by inserting and sliding the end portion of the second coupling portion 11c from the end portion of the first coupling portion 11b. In addition, the first coupling portion 11b is elastically deformed by pushing the second coupling portion 11c into the slit of the first coupling portion 11b, and after the slit is widened and the second coupling portion 11c is inserted, the first coupling portion 11b is inserted. The coupling portion 11b may be elastically restored.

  Each of the pair of heat radiation fins 11d and 11e has a rectangular plate shape that is long in the longitudinal direction of the unit member 11, and is formed integrally with a portion of the first coupling portion 11b that is radially inward of the main body 9. Yes. As shown in FIG. 3B, the pair of heat radiation fins 11d and 11e are formed so as to extend radially inward of the main body 9 in the substantially tangential direction of the first coupling portion 11b when viewed in the longitudinal direction. Yes. Thereby, the radiation fins 11d and 11e of the adjacent unit members 11 are prevented from interfering (see FIG. 2). The radiation fins 11d and 11e radiate the heat generated by the light emitting diode 10.

  With the above configuration, according to the first embodiment, only the plurality of unit members 11 are combined by engaging the first coupling portion 11b and the second coupling portion 11c, and other members are not required. The main body 9 can be configured easily. Further, since the adjacent unit members 11 can be coupled at any angle within a predetermined angle range, the number of unit members 11 arranged in the circumferential direction can be freely set. Thus, according to the first embodiment, the light irradiation device 100 capable of manufacturing the cylindrical light emitting unit 4 matched to the diameter of the pipe such as a sewer pipe while suppressing the labor and cost required for the manufacturing is provided. Can be realized. In addition, since the unit member 11 has the same cross-sectional shape over the entire length, the length of the light emitting unit 4 can also be set freely.

  Next, a method for manufacturing the light irradiation apparatus 100 according to the first embodiment will be described. The light irradiation apparatus 100 according to the first embodiment has a feature in the manufacturing process of the main body 9 of the light emitting unit 4, and other manufacturing processes can be performed in the same manner as the conventional light irradiation apparatus 100.

  The manufacturing of the main body 9 of the light emitting unit 4 includes a step of preparing a plurality of the unit members 11, a step of selecting the number of the unit members 11 in accordance with the diameter of the tube to be repaired, and the selected number of unit members. And 11 in the circumferential direction to form a cylindrical main body 9.

  As a result, it is possible to manufacture the light irradiation device 100 in accordance with the inner diameter of a pipe such as a sewer pipe while reducing labor and cost required for manufacturing.

Second Embodiment
Next, a second embodiment of the present application will be described with reference to FIG. The light irradiation apparatus according to the second embodiment is the same as that of the first embodiment except for the main body 209 of the light emitting unit 204. Therefore, the description which overlaps is abbreviate | omitted and the main body 209 of the light emission unit 204 is demonstrated.

  FIG. 4 is an end view of the light emitting unit 204 of the light irradiation apparatus according to the second embodiment. This corresponds to FIG. 2 of the first embodiment.

  The main body 209 of the light emitting unit 204 according to the second embodiment is configured by combining 32 unit members 211 so as to correspond to the tube 218 having a larger diameter than that of the first embodiment. The unit member 211 is different from the first embodiment in that the unit member 211 does not have a heat radiating fin extending inside the main body 209.

  Every other light emitting diode 210 as a light source is attached to the unit member 211 in the circumferential direction of the cylindrical main body 209. Even in such a configuration, the diameter of the main body 209 of the light emitting unit 204 may be set so that the light of the light emitting diode 210 is irradiated on the entire cross section of the liner 215. In FIG. 4, the angle range in which the light emitting diode 210 irradiates light is set to 60 °. As shown in FIG. 4, the number of unit members 211 is selected so that the light emitted from each light emitting diode 210 overlaps on the inner peripheral surface of the tube 218 or the outer peripheral surface of the liner 215, and the arrangement of the light emitting diodes 210. You can decide. The light irradiation apparatus according to the second embodiment can be manufactured in the same manner as in the first embodiment.

  As described above, according to the second embodiment, the light irradiation device that can be manufactured in accordance with the diameter of the pipe such as a sewer pipe, and the light irradiation device can be manufactured while suppressing labor and cost required for the manufacture. A manufacturing method can be realized. Moreover, since the unit member 211 has the same cross-sectional shape over the entire length, the length of the light emitting unit 204 can also be set freely.

  In addition, in order to assist the understanding of the present invention, specific embodiments have been described in detail, but the present invention is not limited thereto, and various changes and improvements can be made.

  For example, the number of unit members is not limited to 16 and 32, and can be any number of 3 or more.

  Moreover, although it is desirable that the plurality of unit members have the same shape as in the above embodiment, the present invention is not limited to this.

  The first coupling portion and the second coupling portion are not limited to those shown in the above embodiment as long as the unit members can be coupled at an arbitrary angle within a predetermined angle range. Can do. For example, one of the first coupling portion and the second coupling portion may be a convex portion, the other may be a concave portion, and the first coupling portion and the second coupling portion may constitute an insertion / extraction hinge. good.

2 Camera 3 Connecting member 4, 204 Light emitting unit 4a Cover 5 Arm 6 Wheel 7 Temperature sensor 8 Cable 9, 209 Main body 10, 210 Light emitting diode 11, 211 Unit member 11a Base plate 11b First coupling portion 11c Second coupling portion 11d 11e Radiating fin 12 Protective cylinder 13 Copper pipe for piping 14 Steel pipe for piping 15, 215 Liner 16 LED substrate 17 Lens 100 Light irradiation device 218 Tube

Claims (9)

A light irradiation device for irradiating light to a liner impregnated with a photocurable resin in a tube,
A substantially cylindrical main body configured by connecting a plurality of unit members in the circumferential direction; and a plurality of light sources provided on an outer surface of the main body, and a light emitting unit comprising:
Each of the plurality of unit members includes a base plate that forms the outer surface, a first coupling portion that is integrally formed with the base plate, and the first unit of the adjacent unit members that are integrally formed with the base plate. A light irradiation apparatus comprising: a second coupling portion engaged with the coupling portion.   2. The light irradiation apparatus according to claim 1, wherein the first coupling portion and the second coupling portion are engaged so as to be capable of changing an angle according to a dimension in a radial direction of the main body. The first coupling portion is formed on the radially inner side of the main body on the side of one unit member adjacent to the base plate,
3. The light according to claim 1, wherein the second coupling portion is formed radially inward of the main body on the side of the other adjacent unit member with respect to the base plate. Irradiation device.   The first coupling portion has a cutout cylindrical shape having an inverted C-shaped cross section that is open to the outside in the radial direction of the main body, and the second coupling portion of the adjacent unit member is inserted inside. The light irradiation device according to claim 1, wherein the light irradiation device is a light irradiation device.   5. The light irradiation apparatus according to claim 1, wherein the first coupling portion includes a heat radiation fin that releases heat of the light source.   6. The light irradiation apparatus according to claim 1, wherein the unit members have the same cross-sectional shape over the entire length. A cylindrical main body formed of a plurality of first and second unit members each in the form of a long rectangular plate, wherein the first unit members and the second unit members are alternately juxtaposed side by side; ,
Each of the first and second unit members extends inwardly toward the inner diameter side along one long side part, and is integrally formed along the other long side part. A second coupling portion that is integrally formed extending inwardly and connected to the first coupling portion of the adjacent second and first unit members;
LEDs fixed on the outer diameter side surface of the first unit member;
A light emitting unit comprising:   The light emitting unit according to claim 7, wherein the first and second unit members have the same cross-sectional shape over the entire length. A substantially cylindrical main body configured by connecting a plurality of unit members in the circumferential direction; and a plurality of light sources provided on an outer surface of the main body, and a light emitting unit comprising:
A method of manufacturing a light irradiation device for irradiating light to a liner impregnated with a photocurable resin in a tube,
A base plate that forms the outer surface, a first coupling portion that is integrally formed with the base plate, and a second that is integrally formed with the base plate and engages with the first coupling portion of the adjacent unit members. A step of preparing a plurality of unit members including a coupling portion;
Selecting the number of unit members according to the diameter of the tube;
And combining the selected number of the unit members in the circumferential direction to form the main body.

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