阅读说明：本技术 用于使管道重新加衬的灯头 (Lamp cap for relining a pipe ) 是由 L·彼得 于 2020-05-08 设计创作，主要内容包括：公开了一种用于使管道重新加衬的灯头(100)。灯头包括具有流体入口的近侧端帽(104)、远侧端帽(108)和布置在近侧端帽(104)和远侧端帽(108)之间的至少一个本体(110a、110b)。本体(110a、110b)具有纵向通路,该纵向通路从近侧端帽(104)延伸到本体(110a、110b)的中心,并且其中,至少一个侧向通道从纵向通路侧向延伸到本体(110a、110b)的侧向外侧上的出口,至少一个LED板(140)具有第一表面和第二表面,其中,第一表面包括至少一个发光二极管(LED)以从灯头(100)朝向管道发射光,并且其中,LED板(140)在出口上布置在本体(110a、110b)的侧向外侧上,至少一个间隔件(130)位于LED板(140)和本体(110a、110b)之间以在板(140)和本体(110a、110b)之间产生间隙,并且其中,纵向通路配置成用于接纳来自流体入口的流体,使得在使用中来自流体入口的流体穿过本体(110a、110b)的至少一个侧向通道,使得流体撞击LED板(140)的第二表面并且通过由至少一个间隔件(110a、110b)造成的间隙离开。(A lamphead (100) for relining a pipe is disclosed. The lamp cap comprises a proximal end cap (104) having a fluid inlet, a distal end cap (108), and at least one body (110a, 110b) arranged between the proximal end cap (104) and the distal end cap (108). The body (110a, 110b) has a longitudinal passageway extending from the proximal end cap (104) to a centre of the body (110a, 110b), and wherein at least one lateral channel extends laterally from the longitudinal passageway to an outlet on a laterally outer side of the body (110a, 110b), the at least one LED board (140) having a first surface and a second surface, wherein the first surface comprises at least one Light Emitting Diode (LED) to emit light from the lamp head (100) towards the conduit, and wherein the LED board (140) is arranged on the outlet on the laterally outer side of the body (110a, 110b), the at least one spacer (130) being located between the LED board (140) and the body (110a, 110b) to create a gap between the board (140) and the body (110a, 110b), and wherein the longitudinal passageway is configured for receiving fluid from the fluid inlet such that, in use, fluid from the fluid inlet passes through the body (110a, 110b), 110b) Such that the fluid impinges the second surface of the LED board (140) and exits through the gap created by the at least one spacer (110a, 110 b).)

1. A burner (100) for relining a duct, the burner (100) comprising:

a proximal end cap (104) having a fluid inlet (180);

a distal end cap (108);

at least one body (110a, 110b), the at least one body (110a, 110b) being arranged between the proximal end cap (104) and the distal end cap (108), wherein the body (110a, 110b) has a longitudinal passage (116), the longitudinal passage (116) extending from the proximal end cap (104) to a center of the body (110a, 110b), and wherein at least one lateral channel (120) extends laterally from the longitudinal passage (116) to an outlet (122) on a laterally outer side of the body (110a, 110 b);

at least one LED board (140), the at least one LED board (140) having a first surface and a second surface, wherein the first surface comprises at least one Light Emitting Diode (LED) (144) to emit light from the lamp cap (100) towards the duct, and wherein the LED board (140) is arranged on the outlet (122) on the lateral outer side of the body (110a, 110 b);

at least one spacer (130), the at least one spacer (130) being located between the LED board (140) and the body (110a, 110b) to create a gap between the board (140) and the body (110a, 110b), and

wherein the longitudinal passage (116) is configured for receiving fluid from the inlet (180) such that, in use, fluid from the inlet (180) passes through the at least one lateral channel (120) of the body (110a, 110b) such that the fluid impinges the second surface of the LED board (140) and exits through the gap created by the at least one spacer (110a, 110 b).

2. The lamp cap (100) according to claim 1, wherein the at least one body (110a, 110b) is made of plastic.

3. The lamp cap (100) according to claim 1 or 2, wherein the at least one body (110a, 110b) is a one-piece structure.

4. A lamp cap (100) according to claim 3, wherein the at least one spacer (130) is part of the unitary structure.

5. A lamp cap (100) according to any of claims 1 to 4, the lamp cap (100) comprising at least two bodies (110a, 110b) arranged between the proximal end cap (204) and the distal end cap (208).

6. The lamp cap (100) according to claim 5, wherein the body (110a, 110b) has at least one body fixation hole (118) extending between the proximal end cap (104) and the distal end cap (108), the at least one body fixation hole (118) being configured for receiving a longitudinal screw.

7. Lamp head (100) according to any of claims 1 to 6, wherein the outlet (122) of the lateral channel (120) is arranged below the center of the LED board (140).

8. A lamp cap (100) according to any of the claims 1 to 7, wherein the body (110a, 110b) is a triangular prism.

9. A lamp cap (100) according to any of claims 1 to 8, the lamp cap (100) comprising three LED boards (140), and wherein each body (110a, 110b) has three lateral channels (120), the three lateral channels (120) each being arranged on one lateral outer side of the body (110a, 110b), and wherein each LED board (140) is arranged on the lateral outer side of the body (110a, 110b) on the outlet (122) of the lateral channel (120).

10. The lamp cap (100) according to any of claims 1 to 8, wherein the spacer (130) has a height of about 0.7 to 1.1 mm.

11. The lamp cap (100) according to any of claims 1 to 10, the lamp cap (100) further comprising a cage (148) surrounding the at least one body (112), the cage (148) having a distal circular member (152), a proximal circular member (156), and at least one connecting arm (160) between the distal circular member (152) and the proximal circular member (156).

12. The lamp head (100) according to any of claims 1 to 11, the lamp head (100) further comprising a camera (172) located in a distal portion of the distal end cap (108).

13. A lamp head (100) according to any of claims 1 to 12, the lamp head (100) further comprising a hose connected to the fluid inlet (180) to supply pressurized fluid to the longitudinal passage (116).

14. A lamp head system comprising a lamp head (100) according to any of claims 1 to 13, and a hose connected to the fluid inlet (180) to supply pressurized fluid to the longitudinal passage (116).

Technical Field

The present invention relates generally to the field of relining pipes, such as kitchen pipes and sewer pipes. More particularly, the invention relates to a lamphead for relining a conduit.

Background

The pipelines and piping found in sewers and homes tend to wear over time, causing leakage of fluids flowing therethrough and contamination of the surrounding environment.

Replacing pipes can be difficult and expensive, particularly where it is necessary to dig pipes, such as sewer pipes, surrounding ground or when scaffolding must be erected to facilitate access to the vertical downpipes of a multi-storey dwelling. An alternative to replacing the pipe is to re-line the pipe by inserting the liner inside the pipe and then curing the resin in the liner so that the liner adheres to the inner surface of the pipe, thereby sealing the leak site.

EP2129956B1 discloses an apparatus and a method for curing a liner of a pipeline. A plurality of Light Emitting Diodes (LEDs) are located on an outer wall of the apparatus to illuminate the liner as the apparatus moves through the pipe to cure the resin in the liner. The inner wall of the device defines a substantially unobstructed through-passage extending longitudinally between opposite first and second ends. In use, the liner is inflated by supplying pressurised air which enters one end of the apparatus and passes through the apparatus, after which the air is exhausted through the opposite end of the apparatus. The exhausted air expands the liner before returning to the atmosphere outside the apparatus. The pressurized air also cools the metal elements that receive heat from the external LEDs as the pressurized air passes through the interior of the device. However, the device of EP2129956B1 has several lampheads connected in series to form an elongated structure that tends to jam in the duct during use. This elongated structure is also not suitable for use with curved ducts or ducts having right angles. Furthermore, the devices are prone to overheating due to inefficient heat transfer from the external LEDs to the internal metal elements through which the pressurized air passes.

It is desirable to provide an improved lamphead for relining a conduit that addresses the shortcomings and limitations of the prior art.

Disclosure of Invention

Accordingly, the present invention preferably seeks to mitigate, alleviate or eliminate one or more of the above-identified deficiencies in the art and disadvantages singly or in any combination and solves at least the above mentioned problems by providing a lamp cap for re-lining a conduit, the lamp cap comprising a proximal end cap having a fluid inlet, a distal end cap, at least one body arranged between the proximal end cap and the distal end cap, at least one LED board, at least one spacer, wherein the body has a longitudinal passage extending from the proximal end cap to a center of the body, and wherein at least one lateral channel extends laterally from the longitudinal passage to an outlet on a laterally outer side of the body, the at least one LED board having a first surface and a second surface, wherein the first surface comprises at least one light emitting diode to emit light from the lamp cap towards the conduit, and wherein the LED board is arranged on the outlet on the laterally outer side of the body, the at least one spacer is located between the LED board and the body to create a gap between the board and the body, and wherein the longitudinal passageway is configured to receive fluid from the fluid inlet such that, in use, fluid from the fluid inlet passes through the at least one lateral channel of the body such that the fluid impinges the second surface of the LED board and exits through the gap created by the at least one spacer.

In prior art systems it is the body that is cooled for subsequent cooling of the LEDs and LED boards arranged thereon. This requires the body to have a high thermal conductivity. The preferred material for the body in the prior art system is therefore a metal, which, although having good thermal properties, has drawbacks in terms of manufacturing process. Metals are difficult to handle and machine, making it difficult to make smaller parts and one-piece structures. Thus, having a metal body increases the cost of the product.

The innovative design of creating a gap between the LED board and the body provides several benefits. Since there is a direct fluid flow in the LED board, the LEDs are directly cooled and the thermal conductivity of the body is no longer a relevant factor. This idea therefore allows the body to be made of different materials, preferably plastic materials. Plastic is easier to process and therefore can create smaller structures and integrate different features, such as cable channels, into the body. Further, this idea makes it possible to construct the body as an integral structure, which increases durability and reduces manufacturing costs.

The lamp cap is also unique with respect to the prior art in that the body is arranged with at least one lateral channel having an outlet located below the center of the LED board. In embodiments where the body takes the form of a triangular prism, each rectangular side of the body is arranged with an outlet centred on the rectangular side. In this way, the outlets of the lateral channels will be located directly below the LED board, thereby providing cooling air to the LEDs located above the outlets.

Further advantageous embodiments are disclosed below and in the appended patent claims.

Drawings

These and other aspects, features and advantages which the present invention is capable of will become apparent from and elucidated with reference to the following description of an embodiment of the invention, taken in conjunction with the accompanying drawings, in which,

FIG. 1 is an isometric view of a lamp head according to an embodiment;

FIG. 2 is a side view of a lamp head according to one embodiment;

FIG. 3 is a front cross-sectional view of a lamp head according to one embodiment;

FIG. 4A is a detailed view of the body of the lamp head according to one embodiment;

FIG. 4B is a detailed view of an LED board of a lamp head according to one embodiment;

FIG. 4C is an isometric view of a lamp head according to an embodiment;

FIG. 4D is an isometric view of a lamp head according to an embodiment;

FIG. 5 is a schematic view of a portion of a lamp head according to an embodiment;

FIG. 6A is a side view of a portion of a lamp head according to one embodiment; and

FIG. 6B is a side view of a portion of a lamp head according to one embodiment.

Detailed Description

The following description focuses on four embodiments of the invention applicable to a burner for re-lining a pipe. It will be understood, however, that the invention is not limited to these embodiments or applications.

Since the exemplary lamp head 100 is used for longitudinal ducts, certain features of the lamp head are described with reference to proximal and distal ends, which correspond to the longitudinal/length proximal and distal ends of the duct. Other features of the lamp head are described using terms such as radial, radially and radially directions, which terms are intended to mean any direction starting at or near the central longitudinal axis of the conduit and moving outwardly towards the surface of the conduit (or vice versa, i.e. any direction moving from the outside towards or near the inner central longitudinal axis). For example, the radial direction includes the radius of a circular pipe.

The burner 100 is small enough to be used for kitchen ducts with a diameter of 70mm and for curved ducts as well as ducts with narrow and right angles. Suitable larger pipes may have a diameter of up to 250mm to 300 mm.

In use, the liner is inserted into the interior of a pipe to be relined. Next, the lighthead 100 is pushed distally until it passes through the liner/tubing and illuminates the LEDs 140. Next, the lighthead is pulled back through the liner proximally toward the user. Light from the LED cures the resin in the liner so that the liner adheres to the interior of the pipe to seal the leak site.

Fig. 1 to 4 illustrate a burner 100 or a part of a burner according to an embodiment. The lamp cap 100 has a proximal end cap 104 and a distal end cap 108. The distal cap 108 is disposed opposite the proximal cap 104. In one embodiment, as shown in fig. 1-3, the proximal end cap 108 has a conical shape. In other embodiments, the proximal end cap 108 may have a frustoconical shape, with the advantage that the risk of jamming in curves, such as 90 degree curves, is reduced due to this shape.

The distal cap 108 has a central opening for receiving the camera 172 in a distal portion of the cap 108. This camera allows inspection and monitoring of the liner (not shown) during use. The camera 172 may have a wide angle lens. Preferably, the camera chip 176 is located proximal to the camera 172. The camera chip may be, for example, a 700TVL camera chip.

In one embodiment, the camera chip 172 is disposed on a recess of the ring 168. The ring 168 may be located inside a proximal portion of the cap 108 and may be fastened to the cap 108, for example, using screws.

Preferably, the distal end cap 108 is removable. Thus, when the lighthead 100 is not in use, the distal end cap 108 may be removed to allow replacement of the camera 172 and other portions of the lighthead 100.

In one embodiment, the outer diameter of the proximal end cap 104 is 56mm, and the length of the lighthead 100 is about 85mm to 90 mm. These are exemplary dimensions and may be increased or decreased depending on the size of the pipe to be relined.

The proximal end cap 104 is arranged with a fluid inlet 180. Preferably, the fluid used in the burner is air, but other fluids may be used. As will be described in more detail below, in use pressurized air enters the air inlet 180 of the proximal end cap 104 and passes through the bodies 110a, 110 b.

The lighthead 100 may also include a hose (not shown) connected to the air inlet 180 to supply pressurized air to the longitudinal passageway 116. A vortex cooler (not shown) may also be located proximal to the air inlet 180 to supply pre-cooled air of about 5 to 6 ℃ to the lamp head 100.

It has been surprisingly found that the proximal entry of air into the longitudinal passage 116 and subsequent passages and the exit of air from the bodies 110a, 110b in a generally radial direction through the one or more channels 120 provides an excellent cooling effect, thereby avoiding overheating of the LEDs on the periphery of the bodies. Preferably, air entering the air inlet 180 and passing through the longitudinal passageway 116 does not continue to move distally to exit the lighthead 100 distal of the distal end cap 108.

The lamp cap 100 has at least one body 110a, 110b arranged between the proximal end cap 104 and the distal end cap 108. In a preferred embodiment, the lamp cap 100 has two bodies 110a, 110b, both bodies 110a, 110b being arranged between the proximal end cap 104 and the distal end cap 108. The two bodies 110a, 110b are arranged adjacent to each other. As can be seen in fig. 1, the two bodies 110a, 110b are positioned at an angle to each other.

The plurality of bodies 110a, 110b may be connected in different manners. In one embodiment, the bodies 110a, 110b have at least one body securing hole (not shown) extending between the proximal and distal end caps 104, 108 configured to receive a longitudinal screw. However, it should be understood that other possibilities of attachment also fall within the scope of the present invention.

Preferably, the bodies 110a, 110b are three-dimensional in shape. More preferably, the shape is a triangular prism, and thus the body preferably has triangular prism symmetry. Preferably, the material of the two bodies 110a, 110b is a plastic material. Plastic materials while having sufficient insulative properties are still materials that are easy to handle during the manufacturing process. Plastic is easier to process and therefore can create smaller structures and integrate different features, such as cable channels, into the body.

In one embodiment, each body 110a, 110b is made as a unitary piece. Thus, the bodies 110a, 110b are preferably of unitary construction. This increases durability and reduces manufacturing costs. In a preferred embodiment, the two bodies 110a, 110b are symmetrical to each other.

If the burner 100 comprises two or more bodies 110a, 110b, it is preferred that the shape and material of the bodies are identical or at least very similar.

At least one body 110a, 110b has a longitudinal passageway 116 extending from the proximal end cap 104 to the center of the body 110a, 110 b. The longitudinal passageway 116 is configured to receive pressurized air from the air inlet 180. The longitudinal passage 116 is sized such that a sufficient amount of pressurized air can reach the center of the bodies 110a, 110 b. The amount of pressurized air required depends on several factors, such as the size of the duct.

In one embodiment, the longitudinal passageway 116 is terminated at one end thereof by an end cap 104. In an alternative embodiment, the longitudinal passage 116 is a non-through passage. Thus, the longitudinal passage 116 is terminated by the surface of the body 110a, 110 b.

As will be described in more detail shortly, at least one body 110a, 110b has at least one lateral outer side. At least one laterally outer side of the body 110a, 110b has at least one outlet 122. The lateral passage 120 extends laterally from the longitudinal passageway 116 to the outlet.

One lateral outer side may be arranged with a plurality of lateral passage outlets 122, or a single lateral passage outlet 122. Furthermore, the lateral passage outlets 122 may be provided at multiple lateral sides, or on one single lateral side.

The outlet is dimensioned such that a sufficient amount of pressurized air can reach the LED board. The amount of pressurized air required depends on several factors, such as the size of the duct. The diameter of the outlet is preferably about 1 mm. However, other diameters, larger diameters, or smaller diameters are also possible.

The outlet of the lateral channel 120 is preferably arranged in the center of the lateral outer side of the body 110a, 110 b. As will be described in more detail below, it is preferred that the LED board 140 is arranged on or above the outlet of the lateral channel 120. In this way, air will hit the LED board and provide cooling.

The bodies 110a, 110b may also be arranged with a plurality of cable channels 148. These cable channels are provided for reducing the required cable distance. The cable channels 148 may be arranged in pairs. A pair of cable channels 148 may be arranged to connect to one LED board 140.

At least one body 110a, 110b supports a plurality of Light Emitting Diodes (LEDs) arranged on one or more LED boards 140. The LED board 140 has a first surface and a second surface, and at least one light emitting diode is disposed on the first surface. Preferably, the LED boards 140 are connected to the peripheral surfaces of the bodies 110a, 110b in such a manner that the second surfaces of the LED boards 140 face the bodies 110a, 110 b. In this manner, the LEDs are able to emit light radially outward into the duct during use of the light head 100.

The specifications of the LEDs may vary depending on the use of the lamp head. The LED is typically 100W, but can be as high as 200W or higher. The LEDs may emit light at any suitable wavelength depending on the resin to be cured in the liner. For example, a suitable wavelength may be 395nm to 400nm or 450nm to 455 nm. In a preferred embodiment, the diodes are UV diodes.

The LED board 140 may include an array of diodes, as illustrated in fig. 4B. In some embodiments, the LED board 140 may additionally include one or more cooling elements. If present, these cooling elements are arranged on the second surface of the plate 140.

Fig. 4A illustrates an LED board 140, the LED board 140 having a bottom edge 142a, a top edge 142b, and two side edges 142c, 142 d. The LED board 140 may further include a plurality of mounting holes 147 corresponding to the fixing holes 117 of the bodies 110a, 110 b. This allows the LED board 140 to be easily mounted to and dismounted from the bodies 110a, 110 b.

Optionally, both side edges 142c, 142d may be arranged with a plurality of recesses 146. In the embodiment shown in fig. 4A, two recesses 146 are arranged per side 142c, 142 d. Preferably, these recesses are arranged close to the central horizontal line of the plate 140. The recess may be for receiving a cable carrier for the cable.

Screws (not shown) may be used to fasten the LED board to the fixing holes 117 on the bodies 110a, 110 b. An example of a suitable screw is an M2.5 machine screw. The screw may also hold an LED power supply (not shown). Damaged LEDs 140 are easily removed by removing the screws, placing new LEDs 140 on the bodies 110a, 110b, and then retightening the screws into the holes 117.

At least one laterally outer side of the bodies 110a, 110b is arranged with at least one spacer 130 to provide a distance between the bodies 110a, 110b and the LED board 140. The spacer 130 thus creates a gap between the body and the LED board, thereby providing a space in which air flows. The height of the spacer is such that the spacer creates an air space sufficient to cool the structure. For example, the height of the spacer 130 may be about 0.7mm to 1.1mm, and more preferably about 0.8mm to 1 mm.

In a preferred embodiment, at least one laterally outer side of the body 110a, 110b is arranged with four spacers 130, the four spacers 130 each being arranged at a distance from each other. However, depending on the shape of the body, other numbers of spacers may be preferred.

The spacer 130 may be made of a plastic material. Additionally or alternatively, the spacer may be constructed as a unitary structure with the bodies 110a, 110 b.

In an alternative embodiment, the spacer 130 forms a portion of the LED board 140. In yet another embodiment, the spacer 130 is a separate unit arranged to connect the LED board 140 and the bodies 110a, 110 b. In one embodiment, the spacer 130 connects the LED board 140 and the rectangular sides of the bodies 110a, 110b using the fixing holes 117 and the mounting holes 147. This may be accomplished, for example, by having a screw extending through the length of the spacer 130.

Thus, the novel and innovative concept of having at least one spacer and at least one lateral channel provides the following effects: the longitudinal passageway receives air from the air inlet such that, in use, air from the air inlet passes through the at least one lateral channel of the body such that the air impinges the second surface of the LED board and exits through the gap caused by the at least one spacer.

In the embodiment shown in fig. 1-4, at least one body 110a, 110b is triangular prism in shape. Furthermore, the lamp cap 100 comprises two heads 110a, 110 b. Specific embodiments will now be further described.

Each body 110a, 110b has a bottom surface 112a and a plurality of side surfaces 112b-112 e. The body 110a, 110b includes two triangular bases and three rectangular sides. Here, the three rectangular sides are a bottom surface 112a and two side surfaces 112b, 112 d. The triangular sides are side surfaces 112c and 112 e.

As previously described, the bodies 110a, 110b include a longitudinal passageway 116 extending from the proximal end cap 104 to the distal end cap 108 along the central axis of the bodies 110a, 110 b.

As can be seen from fig. 1 to 2, the LED boards 140 are arranged at the rectangular sides 112a, 112b, 112d of the bodies 110a, 110 b. Preferably, one LED board 140 is disposed on each rectangular side. Therefore, in this embodiment, the number of the LED boards 140 is six. Three LED boards 140 are disposed on each body 110a, 110 b. However, as will be appreciated by those skilled in the art, other numbers of LED boards may be used. The LED board 140 may be sized such that the LED board 140 corresponds to the rectangular sides 112a, 112b, 112d of the bodies 110a, 110 b. Preferably, the LED board 140 is smaller in size than the rectangular side.

Further, each rectangular side 112a, 112b, 112d of the body 110a, 110b is arranged with at least one spacer 130 to provide a distance between the body 110a, 110b and the LED board 140. In a preferred embodiment, four spacers 130 are disposed on each rectangular side 112a, 112b, 112d of the body 110a, 110b, one spacer 130 disposed at each corner of the rectangular side.

Each rectangular side 112a, 112b, 112d of the body 110a, 110b is also arranged with an outlet of at least one lateral channel 120. In the embodiment shown in fig. 1-3, each rectangular side has one outlet of the lateral channel 120. The outlet is preferably arranged in the centre of the rectangular side. The LED board 140 at each side is arranged above the outlet 122 of the lateral channel 120. In this way, air from the air inlet 180 will impinge on the second surface of the LED board 140 and thereby provide cooling.

The triangular sides 112c, 112e are preferably arranged with a plurality of cable channels 148. In the embodiment shown in fig. 4A, six cable channels 148 are provided at each triangular side 112c, 112 e. The cable channels 148 may be arranged in pairs. Preferably, a pair of cable channels 148 are disposed at each end of the triangular sides 112c, 112 e.

Thus, due to the three-dimensional symmetry of the bodies 110a, 110b, in one embodiment, each body 110a, 110b has three LED boards 160, three outlets 122 of the lateral channels 120, and twelve spacers 140. However, as will be understood by those skilled in the art, each body may also include, for example, three LED boards 160, six outlets of lateral channels 120, and twelve spacers 140.

Fig. 5 shows a cross-sectional view of the burner 100. The longitudinal passage 116 connects to at least one lateral channel 120. A lateral passage 120 extends laterally from the longitudinal passage 116 to an outlet 122 on the laterally outer side of the body. In this embodiment, three channels 120 extend outwardly from the longitudinal passage to three outlets, each disposed on a different lateral outer side of the body.

Fig. 6A to 6B show additional components of the lamp cap 100 in the form of a holder 148. In some embodiments, the cage 148 surrounds the bodies 110a, 110b and reduces the effect of shadows generated when light from the LEDs shines on the liner on the curing process. The cage may have a distal circular member 152, a proximal circular member 156, and four curved connecting arms 160 between the distal circular member 152 and the proximal circular member 156. However, it should be noted that the holder 148 may have any suitable number of connecting arms 160, such as two to seven connecting arms. Further, it should be noted that although the connecting arm 160 in fig. 6A to 6B is curved, the connecting arm does not necessarily have to be curved. During use, the connection arm 160 contacts the liner and thus holds the body 110a, 110b and its LEDs in the center of the duct.

In some embodiments, a sensor hole (not shown) is provided in the distal end cap 108 for placement of a pressure sensor and/or a temperature sensor (not shown). During certain applications, it may be desirable to measure the pressure in the liner or the temperature of the liner. In addition, the distal cap 108 may also be arranged with a Printed Circuit Board (PCB) chip (not shown) that may contain a voltage regulator, an LED that provides light to the camera to make the camera see inside the distal tubing, and a chip for measuring liner temperature with infrared and/or for measuring pressure in the liner in conjunction with a sensor (if present).